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Annotation of Gnu-Mach/linux/src/drivers/net/de4x5.c, revision 1.1

1.1     ! root        1: /*  de4x5.c: A DIGITAL DC21x4x DECchip and DE425/DE434/DE435/DE450/DE500
        !             2:              ethernet driver for Linux.
        !             3: 
        !             4:     Copyright 1994, 1995 Digital Equipment Corporation.
        !             5: 
        !             6:     Testing resources for this driver have been made available
        !             7:     in part by NASA Ames Research Center ([email protected]).
        !             8: 
        !             9:     The author may be reached at [email protected].
        !            10: 
        !            11:     This program is free software; you can redistribute  it and/or modify it
        !            12:     under  the terms of  the GNU General  Public License as published by the
        !            13:     Free Software Foundation;  either version 2 of the  License, or (at your
        !            14:     option) any later version.
        !            15: 
        !            16:     THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR   IMPLIED
        !            17:     WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
        !            18:     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
        !            19:     NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT,  INDIRECT,
        !            20:     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            21:     NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
        !            22:     USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
        !            23:     ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
        !            24:     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            25:     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            26: 
        !            27:     You should have received a copy of the  GNU General Public License along
        !            28:     with this program; if not, write  to the Free Software Foundation, Inc.,
        !            29:     675 Mass Ave, Cambridge, MA 02139, USA.
        !            30: 
        !            31:     Originally,   this  driver  was    written  for the  Digital   Equipment
        !            32:     Corporation series of EtherWORKS ethernet cards:
        !            33: 
        !            34:         DE425 TP/COAX EISA
        !            35:        DE434 TP PCI
        !            36:        DE435 TP/COAX/AUI PCI
        !            37:        DE450 TP/COAX/AUI PCI
        !            38:        DE500 10/100 PCI Fasternet
        !            39: 
        !            40:     but it  will  now attempt  to  support all  cards which   conform to the
        !            41:     Digital Semiconductor   SROM   Specification.    The  driver   currently
        !            42:     recognises the following chips:
        !            43: 
        !            44:         DC21040  (no SROM) 
        !            45:        DC21041[A]  
        !            46:        DC21140[A] 
        !            47:        DC21142 
        !            48:        DC21143 
        !            49: 
        !            50:     So far the driver is known to work with the following cards:
        !            51: 
        !            52:         KINGSTON
        !            53:        Linksys
        !            54:        ZNYX342
        !            55:        SMC8432
        !            56:        SMC9332 (w/new SROM)
        !            57:        ZNYX31[45]
        !            58:        ZNYX346 10/100 4 port (can act as a 10/100 bridge!) 
        !            59: 
        !            60:     The driver has been tested on a relatively busy network using the DE425,
        !            61:     DE434, DE435 and DE500 cards and benchmarked with 'ttcp': it transferred
        !            62:     16M of data to a DECstation 5000/200 as follows:
        !            63: 
        !            64:                 TCP           UDP
        !            65:              TX     RX     TX     RX
        !            66:     DE425   1030k  997k   1170k  1128k
        !            67:     DE434   1063k  995k   1170k  1125k
        !            68:     DE435   1063k  995k   1170k  1125k
        !            69:     DE500   1063k  998k   1170k  1125k  in 10Mb/s mode
        !            70: 
        !            71:     All  values are typical (in   kBytes/sec) from a  sample  of 4 for  each
        !            72:     measurement. Their error is +/-20k on a quiet (private) network and also
        !            73:     depend on what load the CPU has.
        !            74: 
        !            75:     =========================================================================
        !            76:     This driver  has been written substantially  from  scratch, although its
        !            77:     inheritance of style and stack interface from 'ewrk3.c' and in turn from
        !            78:     Donald Becker's 'lance.c' should be obvious. With the module autoload of
        !            79:     every  usable DECchip board,  I  pinched Donald's 'next_module' field to
        !            80:     link my modules together.
        !            81: 
        !            82:     Upto 15 EISA cards can be supported under this driver, limited primarily
        !            83:     by the available IRQ lines.  I have  checked different configurations of
        !            84:     multiple depca, EtherWORKS 3 cards and de4x5 cards and  have not found a
        !            85:     problem yet (provided you have at least depca.c v0.38) ...
        !            86: 
        !            87:     PCI support has been added  to allow the driver  to work with the DE434,
        !            88:     DE435, DE450 and DE500 cards. The I/O accesses are a bit of a kludge due
        !            89:     to the differences in the EISA and PCI CSR address offsets from the base
        !            90:     address.
        !            91: 
        !            92:     The ability to load this  driver as a loadable  module has been included
        !            93:     and used extensively  during the driver development  (to save those long
        !            94:     reboot sequences).  Loadable module support  under PCI and EISA has been
        !            95:     achieved by letting the driver autoprobe as if it were compiled into the
        !            96:     kernel. Do make sure  you're not sharing  interrupts with anything  that
        !            97:     cannot accommodate  interrupt  sharing!
        !            98: 
        !            99:     To utilise this ability, you have to do 8 things:
        !           100: 
        !           101:     0) have a copy of the loadable modules code installed on your system.
        !           102:     1) copy de4x5.c from the  /linux/drivers/net directory to your favourite
        !           103:     temporary directory.
        !           104:     2) for fixed  autoprobes (not  recommended),  edit the source code  near
        !           105:     line 5594 to reflect the I/O address  you're using, or assign these when
        !           106:     loading by:
        !           107: 
        !           108:                    insmod de4x5 io=0xghh           where g = bus number
        !           109:                                                        hh = device number   
        !           110: 
        !           111:        NB: autoprobing for modules is now supported by default. You may just
        !           112:            use:
        !           113: 
        !           114:                    insmod de4x5
        !           115: 
        !           116:            to load all available boards. For a specific board, still use
        !           117:           the 'io=?' above.
        !           118:     3) compile  de4x5.c, but include -DMODULE in  the command line to ensure
        !           119:     that the correct bits are compiled (see end of source code).
        !           120:     4) if you are wanting to add a new  card, goto 5. Otherwise, recompile a
        !           121:     kernel with the de4x5 configuration turned off and reboot.
        !           122:     5) insmod de4x5 [io=0xghh]
        !           123:     6) run the net startup bits for your new eth?? interface(s) manually 
        !           124:     (usually /etc/rc.inet[12] at boot time). 
        !           125:     7) enjoy!
        !           126: 
        !           127:     To unload a module, turn off the associated interface(s) 
        !           128:     'ifconfig eth?? down' then 'rmmod de4x5'.
        !           129: 
        !           130:     Automedia detection is included so that in  principal you can disconnect
        !           131:     from, e.g.  TP, reconnect  to BNC  and  things will still work  (after a
        !           132:     pause whilst the   driver figures out   where its media went).  My tests
        !           133:     using ping showed that it appears to work....
        !           134: 
        !           135:     By  default,  the driver will  now   autodetect any  DECchip based card.
        !           136:     Should you have a need to restrict the driver to DIGITAL only cards, you
        !           137:     can compile with a  DEC_ONLY define, or if  loading as a module, use the
        !           138:     'dec_only=1'  parameter. 
        !           139: 
        !           140:     I've changed the timing routines to  use the kernel timer and scheduling
        !           141:     functions  so that the  hangs  and other assorted problems that occurred
        !           142:     while autosensing the  media  should be gone.  A  bonus  for the DC21040
        !           143:     auto  media sense algorithm is  that it can now  use one that is more in
        !           144:     line with the  rest (the DC21040  chip doesn't  have a hardware  timer).
        !           145:     The downside is the 1 'jiffies' (10ms) resolution.
        !           146: 
        !           147:     IEEE 802.3u MII interface code has  been added in anticipation that some
        !           148:     products may use it in the future.
        !           149: 
        !           150:     The SMC9332 card  has a non-compliant SROM  which needs fixing -  I have
        !           151:     patched this  driver to detect it  because the SROM format used complies
        !           152:     to a previous DEC-STD format.
        !           153: 
        !           154:     I have removed the buffer copies needed for receive on Intels.  I cannot
        !           155:     remove them for   Alphas since  the  Tulip hardware   only does longword
        !           156:     aligned  DMA transfers  and  the  Alphas get   alignment traps with  non
        !           157:     longword aligned data copies (which makes them really slow). No comment.
        !           158: 
        !           159:     I  have added SROM decoding  routines to make this  driver work with any
        !           160:     card that  supports the Digital  Semiconductor SROM spec. This will help
        !           161:     all  cards running the dc2114x  series chips in particular.  Cards using
        !           162:     the dc2104x  chips should run correctly with  the basic  driver.  I'm in
        !           163:     debt to <[email protected]> for the  testing and feedback that helped get
        !           164:     this feature working.  So far we have  tested KINGSTON, SMC8432, SMC9332
        !           165:     (with the latest SROM complying  with the SROM spec  V3: their first was
        !           166:     broken), ZNYX342  and  LinkSys. ZYNX314 (dual  21041  MAC) and  ZNYX 315
        !           167:     (quad 21041 MAC)  cards also  appear  to work despite their  incorrectly
        !           168:     wired IRQs.
        !           169: 
        !           170:     I have added a temporary fix for interrupt problems when some SCSI cards
        !           171:     share the same interrupt as the DECchip based  cards. The problem occurs
        !           172:     because  the SCSI card wants to  grab the interrupt  as a fast interrupt
        !           173:     (runs the   service routine with interrupts turned   off) vs.  this card
        !           174:     which really needs to run the service routine with interrupts turned on.
        !           175:     This driver will  now   add the interrupt service   routine  as  a  fast
        !           176:     interrupt if it   is bounced from the   slow interrupt.  THIS IS NOT   A
        !           177:     RECOMMENDED WAY TO RUN THE DRIVER  and has been done  for a limited time
        !           178:     until  people   sort  out their  compatibility    issues and the  kernel
        !           179:     interrupt  service code  is  fixed.   YOU  SHOULD SEPARATE OUT  THE FAST
        !           180:     INTERRUPT CARDS FROM THE SLOW INTERRUPT CARDS to ensure that they do not
        !           181:     run on the same interrupt. PCMCIA/CardBus is another can of worms...
        !           182: 
        !           183:     Finally, I think  I have really  fixed  the module  loading problem with
        !           184:     more than one DECchip based  card.  As a  side effect, I don't mess with
        !           185:     the  device structure any  more which means that  if more than 1 card in
        !           186:     2.0.x is    installed (4  in   2.1.x),  the  user   will have   to  edit
        !           187:     linux/drivers/net/Space.c  to make room for  them. Hence, module loading
        !           188:     is  the preferred way to use   this driver, since  it  doesn't have this
        !           189:     limitation.
        !           190: 
        !           191:     Where SROM media  detection is used and  full duplex is specified in the
        !           192:     SROM,  the feature is  ignored unless  lp->params.fdx  is set at compile
        !           193:     time  OR during  a   module load  (insmod  de4x5   args='eth??:fdx' [see
        !           194:     below]).  This is because there  is no way  to automatically detect full
        !           195:     duplex   links  except through   autonegotiation.    When I  include the
        !           196:     autonegotiation feature in  the SROM autoconf  code, this detection will
        !           197:     occur automatically for that case.
        !           198: 
        !           199:     Command  line arguments are  now  allowed, similar  to passing arguments
        !           200:     through LILO. This will allow a per adapter board  set up of full duplex
        !           201:     and media. The only lexical constraints  are: the board name (dev->name)
        !           202:     appears in the list before its  parameters.  The list of parameters ends
        !           203:     either at the end of the parameter list or with another board name.  The
        !           204:     following parameters are allowed:
        !           205: 
        !           206:             fdx        for full duplex
        !           207:            autosense  to set the media/speed; with the following 
        !           208:                       sub-parameters:
        !           209:                       TP, TP_NW, BNC, AUI, BNC_AUI, 100Mb, 10Mb, AUTO
        !           210: 
        !           211:     Case sensitivity is important  for  the sub-parameters. They *must*   be
        !           212:     upper case. Examples:
        !           213: 
        !           214:         insmod de4x5 args='eth1:fdx autosense=BNC eth0:autosense=100Mb'.
        !           215: 
        !           216:     For a compiled in driver, in linux/drivers/net/CONFIG, place e.g.
        !           217:        DE4X5_OPTS = -DDE4X5_PARM='"eth0:fdx autosense=AUI eth2:autosense=TP"' 
        !           218: 
        !           219:     Yes,  I know full duplex  isn't permissible on BNC  or AUI; they're just
        !           220:     examples. By default, full duplex is turned  off and AUTO is the default
        !           221:     autosense setting. In  reality, I expect only the  full duplex option to
        !           222:     be used. Note the use of single quotes in the two examples above and the
        !           223:     lack of commas to separate items.
        !           224: 
        !           225:     TO DO:
        !           226:     ------
        !           227: 
        !           228:     o check what revision numbers the 21142 and 21143 have
        !           229:     o
        !           230: 
        !           231:     Revision History
        !           232:     ----------------
        !           233: 
        !           234:     Version   Date        Description
        !           235:   
        !           236:       0.1     17-Nov-94   Initial writing. ALPHA code release.
        !           237:       0.2     13-Jan-95   Added PCI support for DE435's.
        !           238:       0.21    19-Jan-95   Added auto media detection.
        !           239:       0.22    10-Feb-95   Fix interrupt handler call <[email protected]>.
        !           240:                           Fix recognition bug reported by <[email protected]>.
        !           241:                          Add request/release_region code.
        !           242:                          Add loadable modules support for PCI.
        !           243:                          Clean up loadable modules support.
        !           244:       0.23    28-Feb-95   Added DC21041 and DC21140 support. 
        !           245:                           Fix missed frame counter value and initialisation.
        !           246:                          Fixed EISA probe.
        !           247:       0.24    11-Apr-95   Change delay routine to use <linux/udelay>.
        !           248:                           Change TX_BUFFS_AVAIL macro.
        !           249:                          Change media autodetection to allow manual setting.
        !           250:                          Completed DE500 (DC21140) support.
        !           251:       0.241   18-Apr-95   Interim release without DE500 Autosense Algorithm.
        !           252:       0.242   10-May-95   Minor changes.
        !           253:       0.30    12-Jun-95   Timer fix for DC21140.
        !           254:                           Portability changes.
        !           255:                          Add ALPHA changes from <[email protected]>.
        !           256:                          Add DE500 semi automatic autosense.
        !           257:                          Add Link Fail interrupt TP failure detection.
        !           258:                          Add timer based link change detection.
        !           259:                          Plugged a memory leak in de4x5_queue_pkt().
        !           260:       0.31    13-Jun-95   Fixed PCI stuff for 1.3.1.
        !           261:       0.32    26-Jun-95   Added verify_area() calls in de4x5_ioctl() from a
        !           262:                           suggestion by <[email protected]>.
        !           263:       0.33     8-Aug-95   Add shared interrupt support (not released yet).
        !           264:       0.331   21-Aug-95   Fix de4x5_open() with fast CPUs.
        !           265:                           Fix de4x5_interrupt().
        !           266:                           Fix dc21140_autoconf() mess.
        !           267:                          No shared interrupt support.
        !           268:       0.332   11-Sep-95   Added MII management interface routines.
        !           269:       0.40     5-Mar-96   Fix setup frame timeout <[email protected]>.
        !           270:                           Add kernel timer code (h/w is too flaky).
        !           271:                          Add MII based PHY autosense.
        !           272:                          Add new multicasting code.
        !           273:                          Add new autosense algorithms for media/mode 
        !           274:                          selection using kernel scheduling/timing.
        !           275:                          Re-formatted.
        !           276:                          Made changes suggested by <[email protected]>:
        !           277:                            Change driver to detect all DECchip based cards
        !           278:                            with DEC_ONLY restriction a special case.
        !           279:                            Changed driver to autoprobe as a module. No irq
        !           280:                            checking is done now - assume BIOS is good!
        !           281:                          Added SMC9332 detection <[email protected]>
        !           282:       0.41    21-Mar-96   Don't check for get_hw_addr checksum unless DEC card
        !           283:                           only <[email protected]>
        !           284:                          Fix for multiple PCI cards reported by <[email protected]>
        !           285:                          Duh, put the SA_SHIRQ flag into request_interrupt().
        !           286:                          Fix SMC ethernet address in enet_det[].
        !           287:                          Print chip name instead of "UNKNOWN" during boot.
        !           288:       0.42    26-Apr-96   Fix MII write TA bit error.
        !           289:                           Fix bug in dc21040 and dc21041 autosense code.
        !           290:                          Remove buffer copies on receive for Intels.
        !           291:                          Change sk_buff handling during media disconnects to
        !           292:                           eliminate DUP packets.
        !           293:                          Add dynamic TX thresholding.
        !           294:                          Change all chips to use perfect multicast filtering.
        !           295:                          Fix alloc_device() bug <[email protected]>
        !           296:       0.43   21-Jun-96    Fix unconnected media TX retry bug.
        !           297:                           Add Accton to the list of broken cards.
        !           298:                          Fix TX under-run bug for non DC21140 chips.
        !           299:                          Fix boot command probe bug in alloc_device() as
        !           300:                           reported by <[email protected]> and 
        !           301:                           <[email protected]>.
        !           302:                          Add cache locks to prevent a race condition as
        !           303:                           reported by <[email protected]> and 
        !           304:                           <[email protected]>.
        !           305:                          Upgraded alloc_device() code.
        !           306:       0.431  28-Jun-96    Fix potential bug in queue_pkt() from discussion
        !           307:                           with <[email protected]>
        !           308:       0.44   13-Aug-96    Fix RX overflow bug in 2114[023] chips.
        !           309:                           Fix EISA probe bugs reported by <[email protected]>
        !           310:                          and <[email protected]>.
        !           311:       0.441   9-Sep-96    Change dc21041_autoconf() to probe quiet BNC media
        !           312:                            with a loopback packet.
        !           313:       0.442   9-Sep-96    Include AUI in dc21041 media printout. Bug reported
        !           314:                            by <[email protected]>
        !           315:       0.45    8-Dec-96    Include endian functions for PPC use, from work 
        !           316:                            by <[email protected]> and <[email protected]>.
        !           317:       0.451  28-Dec-96    Added fix to allow autoprobe for modules after
        !           318:                            suggestion from <[email protected]>.
        !           319:       0.5    30-Jan-97    Added SROM decoding functions.
        !           320:                           Updated debug flags.
        !           321:                          Fix sleep/wakeup calls for PCI cards, bug reported
        !           322:                           by <[email protected]>.
        !           323:                          Added multi-MAC, one SROM feature from discussion
        !           324:                           with <[email protected]>.
        !           325:                          Added full module autoprobe capability.
        !           326:                          Added attempt to use an SMC9332 with broken SROM.
        !           327:                          Added fix for ZYNX multi-mac cards that didn't
        !           328:                           get their IRQs wired correctly.
        !           329:       0.51   13-Feb-97    Added endian fixes for the SROM accesses from
        !           330:                           <[email protected]>
        !           331:                          Fix init_connection() to remove extra device reset.
        !           332:                          Fix MAC/PHY reset ordering in dc21140m_autoconf().
        !           333:                          Fix initialisation problem with lp->timeout in
        !           334:                           typeX_infoblock() from <[email protected]>.
        !           335:                          Fix MII PHY reset problem from work done by
        !           336:                           <[email protected]>.
        !           337:       0.52   26-Apr-97    Some changes may not credit the right people -
        !           338:                            a disk crash meant I lost some mail.
        !           339:                          Change RX interrupt routine to drop rather than 
        !           340:                           defer packets to avoid hang reported by 
        !           341:                           <[email protected]>.
        !           342:                          Fix srom_exec() to return for COMPACT and type 1
        !           343:                           infoblocks.
        !           344:                          Added DC21142 and DC21143 functions.
        !           345:                          Added byte counters from <[email protected]>
        !           346:                          Added SA_INTERRUPT temporary fix from 
        !           347:                           <[email protected]>.
        !           348:       0.53   12-Nov-97    Fix the *_probe() to include 'eth??' name during
        !           349:                            module load: bug reported by
        !           350:                           <[email protected]>
        !           351:                          Fix multi-MAC, one SROM, to work with 2114x chips:
        !           352:                           bug reported by <[email protected]>.
        !           353:                          Make above search independent of BIOS device scan
        !           354:                           direction.
        !           355:                          Completed DC2114[23] autosense functions.
        !           356:       0.531  21-Dec-97    Fix DE500-XA 100Mb/s bug reported by 
        !           357:                            <[email protected]
        !           358:                          Fix type1_infoblock() bug introduced in 0.53, from
        !           359:                           problem reports by 
        !           360:                           <[email protected]> and
        !           361:                           <[email protected]>.
        !           362:                          Added argument list to set up each board from either
        !           363:                           a module's command line or a compiled in #define.
        !           364:                          Added generic MII PHY functionality to deal with
        !           365:                           newer PHY chips.
        !           366:                          Fix the mess in 2.1.67.
        !           367:       0.532   5-Jan-98    Fix bug in mii_get_phy() reported by 
        !           368:                            <[email protected]>.
        !           369:                           Fix bug in pci_probe() for 64 bit systems reported
        !           370:                           by <[email protected]>.
        !           371:       0.533   9-Jan-98    Fix more 64 bit bugs reported by <[email protected]>.
        !           372:       0.534  24-Jan-98    Fix last (?) endian bug from 
        !           373:                            <[email protected]>
        !           374:       0.535  21-Feb-98    Fix Ethernet Address PROM reset bug for DC21040.
        !           375:       0.5351  4-Oct-98    Atomicize assertion of dev->interrupt for SMP (not
        !           376:                            for Alpha arch.) from <[email protected]>
        !           377:                          Add TP, AUI and BNC cases to 21140m_autoconf() for
        !           378:                           case where a 21140 under SROM control uses, e.g. AUI
        !           379:                           from problem report by <[email protected]>
        !           380:                          Add MII parallel detection to 2114x_autoconf() for
        !           381:                           case where no autonegotiation partner exists from
        !           382:                           problem report by <[email protected]>.
        !           383:                          Add ability to force connection type directly even
        !           384:                           when using SROM control from problem report by
        !           385:                           <[email protected]>.
        !           386:                          Fix is_anc_capable() bug reported by 
        !           387:                           <[email protected]>.
        !           388:                          Fix type[13]_infoblock() bug: during MII search, PHY
        !           389:                           lp->rst not run because lp->ibn not initialised -
        !           390:                           from report & fix by <[email protected]>.
        !           391:                          Fix probe bug with EISA & PCI cards present from
        !           392:                           report by <[email protected]>.
        !           393:                          Fix compiler problems associated with i386-string
        !           394:                           ops from multiple bug reports and temporary fix
        !           395:                           from <[email protected]>.
        !           396:                          Add an_exception() for old ZYNX346 and fix compile
        !           397:                           warning on PPC & SPARC, from <[email protected]>.
        !           398:                          Fix lastPCI to correctly work with compiled in
        !           399:                           kernels and modules from bug report by 
        !           400:                           <[email protected]> et al.
        !           401:                          Fix dc2114x_autoconf() to stop multiple messages
        !           402:                           when media is unconnected.
        !           403:                          Change dev->interrupt to lp->interrupt to ensure
        !           404:                           alignment for Alpha's and avoid their unaligned
        !           405:                           access traps. This flag is merely for log messages:
        !           406:                           should do something more definitive though...
        !           407: 
        !           408:     =========================================================================
        !           409: */
        !           410: 
        !           411: static const char *version = "de4x5.c:V0.5351 1998/10/4 [email protected]\n";
        !           412: 
        !           413: #include <linux/module.h>
        !           414: 
        !           415: #include <linux/kernel.h>
        !           416: #include <linux/sched.h>
        !           417: #include <linux/string.h>
        !           418: #include <linux/interrupt.h>
        !           419: #include <linux/ptrace.h>
        !           420: #include <linux/errno.h>
        !           421: #include <linux/ioport.h>
        !           422: #include <linux/malloc.h>
        !           423: #include <linux/bios32.h>
        !           424: #include <linux/pci.h>
        !           425: #include <linux/delay.h>
        !           426: #include <asm/bitops.h>
        !           427: #include <asm/io.h>
        !           428: #include <asm/dma.h>
        !           429: #include <asm/byteorder.h>
        !           430: #include <asm/unaligned.h>
        !           431: 
        !           432: #include <linux/netdevice.h>
        !           433: #include <linux/etherdevice.h>
        !           434: #include <linux/skbuff.h>
        !           435: 
        !           436: #include <linux/time.h>
        !           437: #include <linux/types.h>
        !           438: #include <linux/unistd.h>
        !           439: #include <linux/ctype.h>
        !           440: 
        !           441: #include "de4x5.h"
        !           442: 
        !           443: #define c_char const char
        !           444: 
        !           445: #include <linux/version.h>
        !           446: #if    LINUX_VERSION_CODE < LinuxVersionCode(2,1,0)
        !           447: #  define __initfunc(__arginit) __arginit
        !           448: #  define test_and_set_bit      set_bit
        !           449: #  define net_device_stats      enet_statistics
        !           450: #  define copy_to_user(a,b,c)   memcpy_tofs(a,b,c)
        !           451: #  define copy_from_user(a,b,c) memcpy_fromfs(a,b,c)
        !           452: #  define le16_to_cpu(a)        cpu_to_le16(a) 
        !           453: #  define le32_to_cpu(a)        cpu_to_le32(a) 
        !           454: #  ifdef __powerpc__
        !           455: #    define cpu_to_le16(a) ((((a) & 0x00ffU) << 8) | (((a) & 0xff00U) >> 8))
        !           456: #    define cpu_to_le32(a) ((((a) & 0x000000ffU) << 24) |\
        !           457:                            (((a) & 0x0000ff00U) <<  8) |\
        !           458:                            (((a) & 0x00ff0000U) >>  8) |\
        !           459:                            (((a) & 0xff000000U) >> 24))
        !           460: #  else
        !           461: #    define cpu_to_le16(a)      (a)
        !           462: #    define cpu_to_le32(a)      (a)
        !           463: #  endif  /* __powerpc__ */
        !           464: #  include <asm/segment.h>
        !           465: #else
        !           466: #  include <asm/uaccess.h>
        !           467: #  include <linux/init.h>
        !           468: #endif  /* LINUX_VERSION_CODE */
        !           469: #define TWIDDLE(a) (u_short)le16_to_cpu(get_unaligned((u_short *)(a)))
        !           470: 
        !           471: /*
        !           472: ** MII Information
        !           473: */
        !           474: struct phy_table {
        !           475:     int reset;              /* Hard reset required?                         */
        !           476:     int id;                 /* IEEE OUI                                     */
        !           477:     int ta;                 /* One cycle TA time - 802.3u is confusing here */
        !           478:     struct {                /* Non autonegotiation (parallel) speed det.    */
        !           479:        int reg;
        !           480:        int mask;
        !           481:        int value;
        !           482:     } spd;
        !           483: };
        !           484: 
        !           485: struct mii_phy {
        !           486:     int reset;              /* Hard reset required?                      */
        !           487:     int id;                 /* IEEE OUI                                  */
        !           488:     int ta;                 /* One cycle TA time                         */
        !           489:     struct {                /* Non autonegotiation (parallel) speed det. */
        !           490:        int reg;
        !           491:        int mask;
        !           492:        int value;
        !           493:     } spd;
        !           494:     int addr;               /* MII address for the PHY                   */
        !           495:     u_char  *gep;           /* Start of GEP sequence block in SROM       */
        !           496:     u_char  *rst;           /* Start of reset sequence in SROM           */
        !           497:     u_int mc;               /* Media Capabilities                        */
        !           498:     u_int ana;              /* NWay Advertisement                        */
        !           499:     u_int fdx;              /* Full DupleX capabilites for each media    */
        !           500:     u_int ttm;              /* Transmit Threshold Mode for each media    */
        !           501:     u_int mci;              /* 21142 MII Connector Interrupt info        */
        !           502: };
        !           503: 
        !           504: #define DE4X5_MAX_PHY 8     /* Allow upto 8 attached PHY devices per board */
        !           505: 
        !           506: struct sia_phy {
        !           507:     u_char mc;              /* Media Code                                */
        !           508:     u_char ext;             /* csr13-15 valid when set                   */
        !           509:     int csr13;              /* SIA Connectivity Register                 */
        !           510:     int csr14;              /* SIA TX/RX Register                        */
        !           511:     int csr15;              /* SIA General Register                      */
        !           512:     int gepc;               /* SIA GEP Control Information               */
        !           513:     int gep;                /* SIA GEP Data                              */
        !           514: };
        !           515: 
        !           516: /*
        !           517: ** Define the know universe of PHY devices that can be
        !           518: ** recognised by this driver.
        !           519: */
        !           520: static struct phy_table phy_info[] = {
        !           521:     {0, NATIONAL_TX, 1, {0x19, 0x40, 0x00}},       /* National TX */
        !           522:     {1, BROADCOM_T4, 1, {0x10, 0x02, 0x02}},       /* Broadcom T4 */
        !           523:     {0, SEEQ_T4    , 1, {0x12, 0x10, 0x10}},       /* SEEQ T4     */
        !           524:     {0, CYPRESS_T4 , 1, {0x05, 0x20, 0x20}},       /* Cypress T4  */
        !           525:     {0, 0x7810     , 1, {0x05, 0x0380, 0x0380}}    /* Level One?  */
        !           526: };
        !           527: 
        !           528: /*
        !           529: ** These GENERIC values assumes that the PHY devices follow 802.3u and
        !           530: ** allow parallel detection to set the link partner ability register.
        !           531: ** Detection of 100Base-TX [H/F Duplex] and 100Base-T4 is supported.
        !           532: */
        !           533: #define GENERIC_REG   0x05      /* Autoneg. Link Partner Advertisement Reg. */
        !           534: #define GENERIC_MASK  MII_ANLPA_100M /* All 100Mb/s Technologies            */
        !           535: #define GENERIC_VALUE MII_ANLPA_100M /* 100B-TX, 100B-TX FDX, 100B-T4       */
        !           536: 
        !           537: /*
        !           538: ** Define special SROM detection cases
        !           539: */
        !           540: static c_char enet_det[][ETH_ALEN] = {
        !           541:     {0x00, 0x00, 0xc0, 0x00, 0x00, 0x00},
        !           542:     {0x00, 0x00, 0xe8, 0x00, 0x00, 0x00}
        !           543: };
        !           544: 
        !           545: #define SMC    1
        !           546: #define ACCTON 2
        !           547: 
        !           548: /*
        !           549: ** SROM Repair definitions. If a broken SROM is detected a card may
        !           550: ** use this information to help figure out what to do. This is a
        !           551: ** "stab in the dark" and so far for SMC9332's only.
        !           552: */
        !           553: static c_char srom_repair_info[][100] = {
        !           554:     {0x00,0x1e,0x00,0x00,0x00,0x08,             /* SMC9332 */
        !           555:      0x1f,0x01,0x8f,0x01,0x00,0x01,0x00,0x02,
        !           556:      0x01,0x00,0x00,0x78,0xe0,0x01,0x00,0x50,
        !           557:      0x00,0x18,}
        !           558: };
        !           559: 
        !           560: 
        !           561: #ifdef DE4X5_DEBUG
        !           562: static int de4x5_debug = DE4X5_DEBUG;
        !           563: #else
        !           564: /*static int de4x5_debug = (DEBUG_MII | DEBUG_SROM | DEBUG_PCICFG | DEBUG_MEDIA | DEBUG_VERSION);*/
        !           565: static int de4x5_debug = (DEBUG_MEDIA | DEBUG_VERSION);
        !           566: #endif
        !           567: 
        !           568: /*
        !           569: ** Allow per adapter set up. For modules this is simply a command line
        !           570: ** parameter, e.g.: 
        !           571: ** insmod de4x5 args='eth1:fdx autosense=BNC eth0:autosense=100Mb'.
        !           572: **
        !           573: ** For a compiled in driver, place e.g.
        !           574: ** DE4X5_OPTS = -DDE4X5_PARM='"eth0:fdx autosense=AUI eth2:autosense=TP"' 
        !           575: ** in linux/drivers/net/CONFIG
        !           576: */
        !           577: #ifdef DE4X5_PARM
        !           578: static char *args = DE4X5_PARM;
        !           579: #else
        !           580: static char *args = NULL;
        !           581: #endif
        !           582: 
        !           583: struct parameters {
        !           584:     int fdx;
        !           585:     int autosense;
        !           586: };
        !           587: 
        !           588: #define DE4X5_AUTOSENSE_MS 250      /* msec autosense tick (DE500) */
        !           589: 
        !           590: #define DE4X5_NDA 0xffe0            /* No Device (I/O) Address */
        !           591: 
        !           592: /*
        !           593: ** Ethernet PROM defines
        !           594: */
        !           595: #define PROBE_LENGTH    32
        !           596: #define ETH_PROM_SIG    0xAA5500FFUL
        !           597: 
        !           598: /*
        !           599: ** Ethernet Info
        !           600: */
        !           601: #define PKT_BUF_SZ     1536            /* Buffer size for each Tx/Rx buffer */
        !           602: #define IEEE802_3_SZ    1518            /* Packet + CRC */
        !           603: #define MAX_PKT_SZ     1514            /* Maximum ethernet packet length */
        !           604: #define MAX_DAT_SZ     1500            /* Maximum ethernet data length */
        !           605: #define MIN_DAT_SZ     1               /* Minimum ethernet data length */
        !           606: #define PKT_HDR_LEN     14              /* Addresses and data length info */
        !           607: #define FAKE_FRAME_LEN  (MAX_PKT_SZ + 1)
        !           608: #define QUEUE_PKT_TIMEOUT (3*HZ)        /* 3 second timeout */
        !           609: 
        !           610: 
        !           611: #define CRC_POLYNOMIAL_BE 0x04c11db7UL  /* Ethernet CRC, big endian */
        !           612: #define CRC_POLYNOMIAL_LE 0xedb88320UL  /* Ethernet CRC, little endian */
        !           613: 
        !           614: /*
        !           615: ** EISA bus defines
        !           616: */
        !           617: #define DE4X5_EISA_IO_PORTS   0x0c00    /* I/O port base address, slot 0 */
        !           618: #define DE4X5_EISA_TOTAL_SIZE 0x100     /* I/O address extent */
        !           619: 
        !           620: #define MAX_EISA_SLOTS 16
        !           621: #define EISA_SLOT_INC 0x1000
        !           622: #define EISA_ALLOWED_IRQ_LIST  {5, 9, 10, 11}
        !           623: 
        !           624: #define DE4X5_SIGNATURE {"DE425","DE434","DE435","DE450","DE500"}
        !           625: #define DE4X5_NAME_LENGTH 8
        !           626: 
        !           627: /*
        !           628: ** Ethernet PROM defines for DC21040
        !           629: */
        !           630: #define PROBE_LENGTH    32
        !           631: #define ETH_PROM_SIG    0xAA5500FFUL
        !           632: 
        !           633: /*
        !           634: ** PCI Bus defines
        !           635: */
        !           636: #define PCI_MAX_BUS_NUM      8
        !           637: #define DE4X5_PCI_TOTAL_SIZE 0x80       /* I/O address extent */
        !           638: #define DE4X5_CLASS_CODE     0x00020000 /* Network controller, Ethernet */
        !           639: #define NO_MORE_PCI          -2         /* PCI bus search all done */
        !           640: 
        !           641: /*
        !           642: ** Memory Alignment. Each descriptor is 4 longwords long. To force a
        !           643: ** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and
        !           644: ** DESC_ALIGN. ALIGN aligns the start address of the private memory area
        !           645: ** and hence the RX descriptor ring's first entry. 
        !           646: */
        !           647: #define ALIGN4      ((u_long)4 - 1)     /* 1 longword align */
        !           648: #define ALIGN8      ((u_long)8 - 1)     /* 2 longword align */
        !           649: #define ALIGN16     ((u_long)16 - 1)    /* 4 longword align */
        !           650: #define ALIGN32     ((u_long)32 - 1)    /* 8 longword align */
        !           651: #define ALIGN64     ((u_long)64 - 1)    /* 16 longword align */
        !           652: #define ALIGN128    ((u_long)128 - 1)   /* 32 longword align */
        !           653: 
        !           654: #define ALIGN         ALIGN32           /* Keep the DC21040 happy... */
        !           655: #define CACHE_ALIGN   CAL_16LONG
        !           656: #define DESC_SKIP_LEN DSL_0             /* Must agree with DESC_ALIGN */
        !           657: /*#define DESC_ALIGN    u32 dummy[4];  / * Must agree with DESC_SKIP_LEN */
        !           658: #define DESC_ALIGN
        !           659: 
        !           660: #ifndef DEC_ONLY                        /* See README.de4x5 for using this */
        !           661: static int dec_only = 0;
        !           662: #else
        !           663: static int dec_only = 1;
        !           664: #endif
        !           665: 
        !           666: /*
        !           667: ** DE4X5 IRQ ENABLE/DISABLE
        !           668: */
        !           669: #define ENABLE_IRQs { \
        !           670:     imr |= lp->irq_en;\
        !           671:     outl(imr, DE4X5_IMR);               /* Enable the IRQs */\
        !           672: }
        !           673: 
        !           674: #define DISABLE_IRQs {\
        !           675:     imr = inl(DE4X5_IMR);\
        !           676:     imr &= ~lp->irq_en;\
        !           677:     outl(imr, DE4X5_IMR);               /* Disable the IRQs */\
        !           678: }
        !           679: 
        !           680: #define UNMASK_IRQs {\
        !           681:     imr |= lp->irq_mask;\
        !           682:     outl(imr, DE4X5_IMR);               /* Unmask the IRQs */\
        !           683: }
        !           684: 
        !           685: #define MASK_IRQs {\
        !           686:     imr = inl(DE4X5_IMR);\
        !           687:     imr &= ~lp->irq_mask;\
        !           688:     outl(imr, DE4X5_IMR);               /* Mask the IRQs */\
        !           689: }
        !           690: 
        !           691: /*
        !           692: ** DE4X5 START/STOP
        !           693: */
        !           694: #define START_DE4X5 {\
        !           695:     omr = inl(DE4X5_OMR);\
        !           696:     omr |= OMR_ST | OMR_SR;\
        !           697:     outl(omr, DE4X5_OMR);               /* Enable the TX and/or RX */\
        !           698: }
        !           699: 
        !           700: #define STOP_DE4X5 {\
        !           701:     omr = inl(DE4X5_OMR);\
        !           702:     omr &= ~(OMR_ST|OMR_SR);\
        !           703:     outl(omr, DE4X5_OMR);               /* Disable the TX and/or RX */ \
        !           704: }
        !           705: 
        !           706: /*
        !           707: ** DE4X5 SIA RESET
        !           708: */
        !           709: #define RESET_SIA outl(0, DE4X5_SICR);  /* Reset SIA connectivity regs */
        !           710: 
        !           711: /*
        !           712: ** DE500 AUTOSENSE TIMER INTERVAL (MILLISECS)
        !           713: */
        !           714: #define DE4X5_AUTOSENSE_MS  250
        !           715: 
        !           716: /*
        !           717: ** SROM Structure
        !           718: */
        !           719: struct de4x5_srom {
        !           720:     char sub_vendor_id[2];
        !           721:     char sub_system_id[2];
        !           722:     char reserved[12];
        !           723:     char id_block_crc;
        !           724:     char reserved2;
        !           725:     char version;
        !           726:     char num_controllers;
        !           727:     char ieee_addr[6];
        !           728:     char info[100];
        !           729:     short chksum;
        !           730: };
        !           731: #define SUB_VENDOR_ID 0x500a
        !           732: 
        !           733: /*
        !           734: ** DE4X5 Descriptors. Make sure that all the RX buffers are contiguous
        !           735: ** and have sizes of both a power of 2 and a multiple of 4.
        !           736: ** A size of 256 bytes for each buffer could be chosen because over 90% of
        !           737: ** all packets in our network are <256 bytes long and 64 longword alignment
        !           738: ** is possible. 1536 showed better 'ttcp' performance. Take your pick. 32 TX
        !           739: ** descriptors are needed for machines with an ALPHA CPU.
        !           740: */
        !           741: #define NUM_RX_DESC 8                   /* Number of RX descriptors   */
        !           742: #define NUM_TX_DESC 32                  /* Number of TX descriptors   */
        !           743: #define RX_BUFF_SZ  1536                /* Power of 2 for kmalloc and */
        !           744:                                         /* Multiple of 4 for DC21040  */
        !           745:                                         /* Allows 512 byte alignment  */
        !           746: struct de4x5_desc {
        !           747:     volatile s32 status;
        !           748:     u32 des1;
        !           749:     u32 buf;
        !           750:     u32 next;
        !           751:     DESC_ALIGN
        !           752: };
        !           753: 
        !           754: /*
        !           755: ** The DE4X5 private structure
        !           756: */
        !           757: #define DE4X5_PKT_STAT_SZ 16
        !           758: #define DE4X5_PKT_BIN_SZ  128            /* Should be >=100 unless you
        !           759:                                             increase DE4X5_PKT_STAT_SZ */
        !           760: 
        !           761: struct de4x5_private {
        !           762:     char adapter_name[80];                  /* Adapter name                 */
        !           763:     u_long interrupt;                       /* Aligned ISR flag             */
        !           764:     struct de4x5_desc rx_ring[NUM_RX_DESC]; /* RX descriptor ring           */
        !           765:     struct de4x5_desc tx_ring[NUM_TX_DESC]; /* TX descriptor ring           */
        !           766:     struct sk_buff *tx_skb[NUM_TX_DESC];    /* TX skb for freeing when sent */
        !           767:     struct sk_buff *rx_skb[NUM_RX_DESC];    /* RX skb's                     */
        !           768:     int rx_new, rx_old;                     /* RX descriptor ring pointers  */
        !           769:     int tx_new, tx_old;                     /* TX descriptor ring pointers  */
        !           770:     char setup_frame[SETUP_FRAME_LEN];      /* Holds MCA and PA info.       */
        !           771:     char frame[64];                         /* Min sized packet for loopback*/
        !           772:     struct net_device_stats stats;           /* Public stats                 */
        !           773:     struct {
        !           774:        u_int bins[DE4X5_PKT_STAT_SZ];      /* Private stats counters       */
        !           775:        u_int unicast;
        !           776:        u_int multicast;
        !           777:        u_int broadcast;
        !           778:        u_int excessive_collisions;
        !           779:        u_int tx_underruns;
        !           780:        u_int excessive_underruns;
        !           781:        u_int rx_runt_frames;
        !           782:        u_int rx_collision;
        !           783:        u_int rx_dribble;
        !           784:        u_int rx_overflow;
        !           785:     } pktStats;
        !           786:     char rxRingSize;
        !           787:     char txRingSize;
        !           788:     int  bus;                               /* EISA or PCI                  */
        !           789:     int  bus_num;                           /* PCI Bus number               */
        !           790:     int  device;                            /* Device number on PCI bus     */
        !           791:     int  state;                             /* Adapter OPENED or CLOSED     */
        !           792:     int  chipset;                           /* DC21040, DC21041 or DC21140  */
        !           793:     s32  irq_mask;                          /* Interrupt Mask (Enable) bits */
        !           794:     s32  irq_en;                            /* Summary interrupt bits       */
        !           795:     int  media;                             /* Media (eg TP), mode (eg 100B)*/
        !           796:     int  c_media;                           /* Remember the last media conn */
        !           797:     int  fdx;                               /* media full duplex flag       */
        !           798:     int  linkOK;                            /* Link is OK                   */
        !           799:     int  autosense;                         /* Allow/disallow autosensing   */
        !           800:     int  tx_enable;                         /* Enable descriptor polling    */
        !           801:     int  setup_f;                           /* Setup frame filtering type   */
        !           802:     int  local_state;                       /* State within a 'media' state */
        !           803:     struct mii_phy phy[DE4X5_MAX_PHY];      /* List of attached PHY devices */
        !           804:     struct sia_phy sia;                     /* SIA PHY Information          */
        !           805:     int  active;                            /* Index to active PHY device   */
        !           806:     int  mii_cnt;                           /* Number of attached PHY's     */
        !           807:     int  timeout;                           /* Scheduling counter           */
        !           808:     struct timer_list timer;                /* Timer info for kernel        */
        !           809:     int tmp;                                /* Temporary global per card    */
        !           810:     struct {
        !           811:        void *priv;                         /* Original kmalloc'd mem addr  */
        !           812:        void *buf;                          /* Original kmalloc'd mem addr  */
        !           813:        u_long lock;                        /* Lock the cache accesses      */
        !           814:        s32 csr0;                           /* Saved Bus Mode Register      */
        !           815:        s32 csr6;                           /* Saved Operating Mode Reg.    */
        !           816:        s32 csr7;                           /* Saved IRQ Mask Register      */
        !           817:        s32 gep;                            /* Saved General Purpose Reg.   */
        !           818:        s32 gepc;                           /* Control info for GEP         */
        !           819:        s32 csr13;                          /* Saved SIA Connectivity Reg.  */
        !           820:        s32 csr14;                          /* Saved SIA TX/RX Register     */
        !           821:        s32 csr15;                          /* Saved SIA General Register   */
        !           822:        int save_cnt;                       /* Flag if state already saved  */
        !           823:        struct sk_buff *skb;                /* Save the (re-ordered) skb's  */
        !           824:     } cache;
        !           825:     struct de4x5_srom srom;                 /* A copy of the SROM           */
        !           826:     struct device *next_module;             /* Link to the next module      */
        !           827:     int rx_ovf;                             /* Check for 'RX overflow' tag  */
        !           828:     int useSROM;                            /* For non-DEC card use SROM    */
        !           829:     int useMII;                             /* Infoblock using the MII      */
        !           830:     int asBitValid;                         /* Autosense bits in GEP?       */
        !           831:     int asPolarity;                         /* 0 => asserted high           */
        !           832:     int asBit;                              /* Autosense bit number in GEP  */
        !           833:     int defMedium;                          /* SROM default medium          */
        !           834:     int tcount;                             /* Last infoblock number        */
        !           835:     int infoblock_init;                     /* Initialised this infoblock?  */
        !           836:     int infoleaf_offset;                    /* SROM infoleaf for controller */
        !           837:     s32 infoblock_csr6;                     /* csr6 value in SROM infoblock */
        !           838:     int infoblock_media;                    /* infoblock media              */
        !           839:     int (*infoleaf_fn)(struct device *);    /* Pointer to infoleaf function */
        !           840:     u_char *rst;                            /* Pointer to Type 5 reset info */
        !           841:     u_char  ibn;                            /* Infoblock number             */
        !           842:     struct parameters params;               /* Command line/ #defined params */
        !           843: };
        !           844: 
        !           845: /*
        !           846: ** Kludge to get around the fact that the CSR addresses have different
        !           847: ** offsets in the PCI and EISA boards. Also note that the ethernet address
        !           848: ** PROM is accessed differently.
        !           849: */
        !           850: static struct bus_type {
        !           851:     int bus;
        !           852:     int bus_num;
        !           853:     int device;
        !           854:     int chipset;
        !           855:     struct de4x5_srom srom;
        !           856:     int autosense;
        !           857:     int useSROM;
        !           858: } bus;
        !           859: 
        !           860: /*
        !           861: ** To get around certain poxy cards that don't provide an SROM
        !           862: ** for the second and more DECchip, I have to key off the first
        !           863: ** chip's address. I'll assume there's not a bad SROM iff:
        !           864: **
        !           865: **      o the chipset is the same
        !           866: **      o the bus number is the same and > 0
        !           867: **      o the sum of all the returned hw address bytes is 0 or 0x5fa
        !           868: **
        !           869: ** Also have to save the irq for those cards whose hardware designers
        !           870: ** can't follow the PCI to PCI Bridge Architecture spec.
        !           871: */
        !           872: static struct {
        !           873:     int chipset;
        !           874:     int bus;
        !           875:     int irq;
        !           876:     u_char addr[ETH_ALEN];
        !           877: } last = {0,};
        !           878: 
        !           879: /*
        !           880: ** The transmit ring full condition is described by the tx_old and tx_new
        !           881: ** pointers by:
        !           882: **    tx_old            = tx_new    Empty ring
        !           883: **    tx_old            = tx_new+1  Full ring
        !           884: **    tx_old+txRingSize = tx_new+1  Full ring  (wrapped condition)
        !           885: */
        !           886: #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
        !           887:                        lp->tx_old+lp->txRingSize-lp->tx_new-1:\
        !           888:                        lp->tx_old               -lp->tx_new-1)
        !           889: 
        !           890: #define TX_PKT_PENDING (lp->tx_old != lp->tx_new)
        !           891: 
        !           892: /*
        !           893: ** Public Functions
        !           894: */
        !           895: static int     de4x5_open(struct device *dev);
        !           896: static int     de4x5_queue_pkt(struct sk_buff *skb, struct device *dev);
        !           897: static void    de4x5_interrupt(int irq, void *dev_id, struct pt_regs *regs);
        !           898: static int     de4x5_close(struct device *dev);
        !           899: static struct  net_device_stats *de4x5_get_stats(struct device *dev);
        !           900: static void    de4x5_local_stats(struct device *dev, char *buf, int pkt_len);
        !           901: static void    set_multicast_list(struct device *dev);
        !           902: static int     de4x5_ioctl(struct device *dev, struct ifreq *rq, int cmd);
        !           903: 
        !           904: /*
        !           905: ** Private functions
        !           906: */
        !           907: static int     de4x5_hw_init(struct device *dev, u_long iobase);
        !           908: static int     de4x5_init(struct device *dev);
        !           909: static int     de4x5_sw_reset(struct device *dev);
        !           910: static int     de4x5_rx(struct device *dev);
        !           911: static int     de4x5_tx(struct device *dev);
        !           912: static int     de4x5_ast(struct device *dev);
        !           913: static int     de4x5_txur(struct device *dev);
        !           914: static int     de4x5_rx_ovfc(struct device *dev);
        !           915: 
        !           916: static int     autoconf_media(struct device *dev);
        !           917: static void    create_packet(struct device *dev, char *frame, int len);
        !           918: static void    de4x5_us_delay(u32 usec);
        !           919: static void    de4x5_ms_delay(u32 msec);
        !           920: static void    load_packet(struct device *dev, char *buf, u32 flags, struct sk_buff *skb);
        !           921: static int     dc21040_autoconf(struct device *dev);
        !           922: static int     dc21041_autoconf(struct device *dev);
        !           923: static int     dc21140m_autoconf(struct device *dev);
        !           924: static int     dc2114x_autoconf(struct device *dev);
        !           925: static int     srom_autoconf(struct device *dev);
        !           926: static int     de4x5_suspect_state(struct device *dev, int timeout, int prev_state, int (*fn)(struct device *, int), int (*asfn)(struct device *));
        !           927: static int     dc21040_state(struct device *dev, int csr13, int csr14, int csr15, int timeout, int next_state, int suspect_state, int (*fn)(struct device *, int));
        !           928: static int     test_media(struct device *dev, s32 irqs, s32 irq_mask, s32 csr13, s32 csr14, s32 csr15, s32 msec);
        !           929: static int     test_for_100Mb(struct device *dev, int msec);
        !           930: static int     wait_for_link(struct device *dev);
        !           931: static int     test_mii_reg(struct device *dev, int reg, int mask, int pol, long msec);
        !           932: static int     is_spd_100(struct device *dev);
        !           933: static int     is_100_up(struct device *dev);
        !           934: static int     is_10_up(struct device *dev);
        !           935: static int     is_anc_capable(struct device *dev);
        !           936: static int     ping_media(struct device *dev, int msec);
        !           937: static struct sk_buff *de4x5_alloc_rx_buff(struct device *dev, int index, int len);
        !           938: static void    de4x5_free_rx_buffs(struct device *dev);
        !           939: static void    de4x5_free_tx_buffs(struct device *dev);
        !           940: static void    de4x5_save_skbs(struct device *dev);
        !           941: static void    de4x5_rst_desc_ring(struct device *dev);
        !           942: static void    de4x5_cache_state(struct device *dev, int flag);
        !           943: static void    de4x5_put_cache(struct device *dev, struct sk_buff *skb);
        !           944: static void    de4x5_putb_cache(struct device *dev, struct sk_buff *skb);
        !           945: static struct  sk_buff *de4x5_get_cache(struct device *dev);
        !           946: static void    de4x5_setup_intr(struct device *dev);
        !           947: static void    de4x5_init_connection(struct device *dev);
        !           948: static int     de4x5_reset_phy(struct device *dev);
        !           949: static void    reset_init_sia(struct device *dev, s32 sicr, s32 strr, s32 sigr);
        !           950: static int     test_ans(struct device *dev, s32 irqs, s32 irq_mask, s32 msec);
        !           951: static int     test_tp(struct device *dev, s32 msec);
        !           952: static int     EISA_signature(char *name, s32 eisa_id);
        !           953: static int     PCI_signature(char *name, struct bus_type *lp);
        !           954: static void    DevicePresent(u_long iobase);
        !           955: static void    enet_addr_rst(u_long aprom_addr);
        !           956: static int     de4x5_bad_srom(struct bus_type *lp);
        !           957: static short   srom_rd(u_long address, u_char offset);
        !           958: static void    srom_latch(u_int command, u_long address);
        !           959: static void    srom_command(u_int command, u_long address);
        !           960: static void    srom_address(u_int command, u_long address, u_char offset);
        !           961: static short   srom_data(u_int command, u_long address);
        !           962: /*static void    srom_busy(u_int command, u_long address);*/
        !           963: static void    sendto_srom(u_int command, u_long addr);
        !           964: static int     getfrom_srom(u_long addr);
        !           965: static int     srom_map_media(struct device *dev);
        !           966: static int     srom_infoleaf_info(struct device *dev);
        !           967: static void    srom_init(struct device *dev);
        !           968: static void    srom_exec(struct device *dev, u_char *p);
        !           969: static int     mii_rd(u_char phyreg, u_char phyaddr, u_long ioaddr);
        !           970: static void    mii_wr(int data, u_char phyreg, u_char phyaddr, u_long ioaddr);
        !           971: static int     mii_rdata(u_long ioaddr);
        !           972: static void    mii_wdata(int data, int len, u_long ioaddr);
        !           973: static void    mii_ta(u_long rw, u_long ioaddr);
        !           974: static int     mii_swap(int data, int len);
        !           975: static void    mii_address(u_char addr, u_long ioaddr);
        !           976: static void    sendto_mii(u32 command, int data, u_long ioaddr);
        !           977: static int     getfrom_mii(u32 command, u_long ioaddr);
        !           978: static int     mii_get_oui(u_char phyaddr, u_long ioaddr);
        !           979: static int     mii_get_phy(struct device *dev);
        !           980: static void    SetMulticastFilter(struct device *dev);
        !           981: static int     get_hw_addr(struct device *dev);
        !           982: static void    srom_repair(struct device *dev, int card);
        !           983: static int     test_bad_enet(struct device *dev, int status);
        !           984: static int     an_exception(struct bus_type *lp);
        !           985: #if !defined(__sparc_v9__) && !defined(__powerpc__) && !defined(__alpha__)
        !           986: static void    eisa_probe(struct device *dev, u_long iobase);
        !           987: #endif
        !           988: static void    pci_probe(struct device *dev, u_long iobase);
        !           989: static void    srom_search(int index);
        !           990: static char    *build_setup_frame(struct device *dev, int mode);
        !           991: static void    disable_ast(struct device *dev);
        !           992: static void    enable_ast(struct device *dev, u32 time_out);
        !           993: static long    de4x5_switch_mac_port(struct device *dev);
        !           994: static int     gep_rd(struct device *dev);
        !           995: static void    gep_wr(s32 data, struct device *dev);
        !           996: static void    timeout(struct device *dev, void (*fn)(u_long data), u_long data, u_long msec);
        !           997: static void    yawn(struct device *dev, int state);
        !           998: static void    link_modules(struct device *dev, struct device *tmp);
        !           999: static void    de4x5_parse_params(struct device *dev);
        !          1000: static void    de4x5_dbg_open(struct device *dev);
        !          1001: static void    de4x5_dbg_mii(struct device *dev, int k);
        !          1002: static void    de4x5_dbg_media(struct device *dev);
        !          1003: static void    de4x5_dbg_srom(struct de4x5_srom *p);
        !          1004: static void    de4x5_dbg_rx(struct sk_buff *skb, int len);
        !          1005: static int     de4x5_strncmp(char *a, char *b, int n);
        !          1006: static int     dc21041_infoleaf(struct device *dev);
        !          1007: static int     dc21140_infoleaf(struct device *dev);
        !          1008: static int     dc21142_infoleaf(struct device *dev);
        !          1009: static int     dc21143_infoleaf(struct device *dev);
        !          1010: static int     type0_infoblock(struct device *dev, u_char count, u_char *p);
        !          1011: static int     type1_infoblock(struct device *dev, u_char count, u_char *p);
        !          1012: static int     type2_infoblock(struct device *dev, u_char count, u_char *p);
        !          1013: static int     type3_infoblock(struct device *dev, u_char count, u_char *p);
        !          1014: static int     type4_infoblock(struct device *dev, u_char count, u_char *p);
        !          1015: static int     type5_infoblock(struct device *dev, u_char count, u_char *p);
        !          1016: static int     compact_infoblock(struct device *dev, u_char count, u_char *p);
        !          1017: 
        !          1018: #ifdef MODULE
        !          1019: int  init_module(void);
        !          1020: void cleanup_module(void);
        !          1021: static struct  device *unlink_modules(struct device *p);
        !          1022: static struct  device *insert_device(struct device *dev, u_long iobase,
        !          1023:                                     int (*init)(struct device *));
        !          1024: static int count_adapters(void);
        !          1025: static int loading_module = 1;
        !          1026: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,0)
        !          1027: MODULE_PARM(de4x5_debug, "i");
        !          1028: MODULE_PARM(dec_only, "i");
        !          1029: MODULE_PARM(args, "s");
        !          1030: #endif /* LINUX_VERSION_CODE */
        !          1031: # else
        !          1032: static int loading_module = 0;
        !          1033: #endif /* MODULE */
        !          1034: 
        !          1035: static char name[DE4X5_NAME_LENGTH + 1];
        !          1036: #if !defined(__sparc_v9__) && !defined(__powerpc__) && !defined(__alpha__)
        !          1037: static u_char de4x5_irq[] = EISA_ALLOWED_IRQ_LIST;
        !          1038: static int lastEISA = 0;
        !          1039: #else
        !          1040: static int lastEISA = MAX_EISA_SLOTS;           /* Only PCI probes */
        !          1041: #endif
        !          1042: static int num_de4x5s = 0;
        !          1043: static int cfrv = 0, useSROM = 0;
        !          1044: static int lastPCI = -1;
        !          1045: static struct device *lastModule = NULL;
        !          1046: 
        !          1047: /*
        !          1048: ** List the SROM infoleaf functions and chipsets
        !          1049: */
        !          1050: struct InfoLeaf {
        !          1051:     int chipset;
        !          1052:     int (*fn)(struct device *);
        !          1053: };
        !          1054: static struct InfoLeaf infoleaf_array[] = {
        !          1055:     {DC21041, dc21041_infoleaf},
        !          1056:     {DC21140, dc21140_infoleaf},
        !          1057:     {DC21142, dc21142_infoleaf},
        !          1058:     {DC21143, dc21143_infoleaf}
        !          1059: };
        !          1060: #define INFOLEAF_SIZE (sizeof(infoleaf_array)/(sizeof(int)+sizeof(int *)))
        !          1061: 
        !          1062: /*
        !          1063: ** List the SROM info block functions
        !          1064: */
        !          1065: static int (*dc_infoblock[])(struct device *dev, u_char, u_char *) = {
        !          1066:     type0_infoblock,
        !          1067:     type1_infoblock,
        !          1068:     type2_infoblock,
        !          1069:     type3_infoblock,
        !          1070:     type4_infoblock,
        !          1071:     type5_infoblock,
        !          1072:     compact_infoblock
        !          1073: };
        !          1074: 
        !          1075: #define COMPACT (sizeof(dc_infoblock)/sizeof(int *) - 1)
        !          1076: 
        !          1077: /*
        !          1078: ** Miscellaneous defines...
        !          1079: */
        !          1080: #define RESET_DE4X5 {\
        !          1081:     int i;\
        !          1082:     i=inl(DE4X5_BMR);\
        !          1083:     de4x5_ms_delay(1);\
        !          1084:     outl(i | BMR_SWR, DE4X5_BMR);\
        !          1085:     de4x5_ms_delay(1);\
        !          1086:     outl(i, DE4X5_BMR);\
        !          1087:     de4x5_ms_delay(1);\
        !          1088:     for (i=0;i<5;i++) {inl(DE4X5_BMR); de4x5_ms_delay(1);}\
        !          1089:     de4x5_ms_delay(1);\
        !          1090: }
        !          1091: 
        !          1092: #define PHY_HARD_RESET {\
        !          1093:     outl(GEP_HRST, DE4X5_GEP);           /* Hard RESET the PHY dev. */\
        !          1094:     udelay(1000);                        /* Assert for 1ms */\
        !          1095:     outl(0x00, DE4X5_GEP);\
        !          1096:     udelay(2000);                        /* Wait for 2ms */\
        !          1097: }
        !          1098: 
        !          1099: 
        !          1100: /*
        !          1101: ** Autoprobing in modules is allowed here. See the top of the file for
        !          1102: ** more info.
        !          1103: */
        !          1104: __initfunc(int
        !          1105: de4x5_probe(struct device *dev))
        !          1106: {
        !          1107:     u_long iobase = dev->base_addr;
        !          1108: 
        !          1109: #if !defined(__sparc_v9__) && !defined(__powerpc__) && !defined(__alpha__)
        !          1110:     eisa_probe(dev, iobase);
        !          1111: #endif
        !          1112:     if (lastEISA == MAX_EISA_SLOTS) {
        !          1113:        pci_probe(dev, iobase);
        !          1114:     }
        !          1115:     
        !          1116:     return (dev->priv ? 0 : -ENODEV);
        !          1117: }
        !          1118: 
        !          1119: __initfunc(static int
        !          1120: de4x5_hw_init(struct device *dev, u_long iobase))
        !          1121: {
        !          1122:     struct bus_type *lp = &bus;
        !          1123:     int i, status=0;
        !          1124:     char *tmp;
        !          1125:     
        !          1126:     /* Ensure we're not sleeping */
        !          1127:     if (lp->bus == EISA) {
        !          1128:        outb(WAKEUP, PCI_CFPM);
        !          1129:     } else {
        !          1130:        pcibios_write_config_byte(lp->bus_num, lp->device << 3, 
        !          1131:                                  PCI_CFDA_PSM, WAKEUP);
        !          1132:     }
        !          1133:     de4x5_ms_delay(10);
        !          1134: 
        !          1135:     RESET_DE4X5;
        !          1136:     
        !          1137:     if ((inl(DE4X5_STS) & (STS_TS | STS_RS)) != 0) {
        !          1138:        return -ENXIO;                       /* Hardware could not reset */
        !          1139:     }
        !          1140:     
        !          1141:     /* 
        !          1142:     ** Now find out what kind of DC21040/DC21041/DC21140 board we have.
        !          1143:     */
        !          1144:     useSROM = FALSE;
        !          1145:     if (lp->bus == PCI) {
        !          1146:        PCI_signature(name, lp);
        !          1147:     } else {
        !          1148:        EISA_signature(name, EISA_ID0);
        !          1149:     }
        !          1150:     
        !          1151:     if (*name == '\0') {                     /* Not found a board signature */
        !          1152:        return -ENXIO;
        !          1153:     }
        !          1154:     
        !          1155:     dev->base_addr = iobase;
        !          1156:     if (lp->bus == EISA) {
        !          1157:        printk("%s: %s at 0x%04lx (EISA slot %ld)", 
        !          1158:               dev->name, name, iobase, ((iobase>>12)&0x0f));
        !          1159:     } else {                                 /* PCI port address */
        !          1160:        printk("%s: %s at 0x%04lx (PCI bus %d, device %d)", dev->name, name,
        !          1161:               iobase, lp->bus_num, lp->device);
        !          1162:     }
        !          1163:     
        !          1164:     printk(", h/w address ");
        !          1165:     status = get_hw_addr(dev);
        !          1166:     for (i = 0; i < ETH_ALEN - 1; i++) {     /* get the ethernet addr. */
        !          1167:        printk("%2.2x:", dev->dev_addr[i]);
        !          1168:     }
        !          1169:     printk("%2.2x,\n", dev->dev_addr[i]);
        !          1170:     
        !          1171:     if (status != 0) {
        !          1172:        printk("      which has an Ethernet PROM CRC error.\n");
        !          1173:        return -ENXIO;
        !          1174:     } else {
        !          1175:        struct de4x5_private *lp;
        !          1176:        
        !          1177:        /* 
        !          1178:        ** Reserve a section of kernel memory for the adapter
        !          1179:        ** private area and the TX/RX descriptor rings.
        !          1180:        */
        !          1181:        dev->priv = (void *) kmalloc(sizeof(struct de4x5_private) + ALIGN, 
        !          1182:                                     GFP_KERNEL);
        !          1183:        if (dev->priv == NULL) {
        !          1184:            return -ENOMEM;
        !          1185:        }
        !          1186:        
        !          1187:        /*
        !          1188:        ** Align to a longword boundary
        !          1189:        */
        !          1190:        tmp = dev->priv;
        !          1191:        dev->priv = (void *)(((u_long)dev->priv + ALIGN) & ~ALIGN);
        !          1192:        lp = (struct de4x5_private *)dev->priv;
        !          1193:        memset(dev->priv, 0, sizeof(struct de4x5_private));
        !          1194:        lp->bus = bus.bus;
        !          1195:        lp->bus_num = bus.bus_num;
        !          1196:        lp->device = bus.device;
        !          1197:        lp->chipset = bus.chipset;
        !          1198:        lp->cache.priv = tmp;
        !          1199:        lp->cache.gepc = GEP_INIT;
        !          1200:        lp->asBit = GEP_SLNK;
        !          1201:        lp->asPolarity = GEP_SLNK;
        !          1202:        lp->asBitValid = TRUE;
        !          1203:        lp->timeout = -1;
        !          1204:        lp->useSROM = useSROM;
        !          1205:        memcpy((char *)&lp->srom,(char *)&bus.srom,sizeof(struct de4x5_srom));
        !          1206:        de4x5_parse_params(dev);
        !          1207: 
        !          1208:        /*
        !          1209:        ** Choose correct autosensing in case someone messed up
        !          1210:        */
        !          1211:         lp->autosense = lp->params.autosense;
        !          1212:         if (lp->chipset != DC21140) {
        !          1213:             if ((lp->chipset==DC21040) && (lp->params.autosense&TP_NW)) {
        !          1214:                 lp->params.autosense = TP;
        !          1215:             }
        !          1216:             if ((lp->chipset==DC21041) && (lp->params.autosense&BNC_AUI)) {
        !          1217:                 lp->params.autosense = BNC;
        !          1218:             }
        !          1219:         }
        !          1220:        lp->fdx = lp->params.fdx;
        !          1221:        sprintf(lp->adapter_name,"%s (%s)", name, dev->name);
        !          1222:        
        !          1223:        /*
        !          1224:        ** Set up the RX descriptor ring (Intels)
        !          1225:        ** Allocate contiguous receive buffers, long word aligned (Alphas) 
        !          1226:        */
        !          1227: #if !defined(__alpha__) && !defined(__powerpc__) && !defined(__sparc_v9__) && !defined(DE4X5_DO_MEMCPY)
        !          1228:        for (i=0; i<NUM_RX_DESC; i++) {
        !          1229:            lp->rx_ring[i].status = 0;
        !          1230:            lp->rx_ring[i].des1 = RX_BUFF_SZ;
        !          1231:            lp->rx_ring[i].buf = 0;
        !          1232:            lp->rx_ring[i].next = 0;
        !          1233:            lp->rx_skb[i] = (struct sk_buff *) 1;     /* Dummy entry */
        !          1234:        }
        !          1235: 
        !          1236: #else
        !          1237:        if ((tmp = (void *)kmalloc(RX_BUFF_SZ * NUM_RX_DESC + ALIGN, 
        !          1238:                                   GFP_KERNEL)) == NULL) {
        !          1239:            kfree(lp->cache.priv);
        !          1240:            return -ENOMEM;
        !          1241:        }
        !          1242: 
        !          1243:        lp->cache.buf = tmp;
        !          1244:        tmp = (char *)(((u_long) tmp + ALIGN) & ~ALIGN);
        !          1245:        for (i=0; i<NUM_RX_DESC; i++) {
        !          1246:            lp->rx_ring[i].status = 0;
        !          1247:            lp->rx_ring[i].des1 = cpu_to_le32(RX_BUFF_SZ);
        !          1248:            lp->rx_ring[i].buf = cpu_to_le32(virt_to_bus(tmp+i*RX_BUFF_SZ));
        !          1249:            lp->rx_ring[i].next = 0;
        !          1250:            lp->rx_skb[i] = (struct sk_buff *) 1;     /* Dummy entry */
        !          1251:        }
        !          1252: #endif
        !          1253: 
        !          1254:        barrier();
        !          1255:            
        !          1256:        request_region(iobase, (lp->bus == PCI ? DE4X5_PCI_TOTAL_SIZE :
        !          1257:                                DE4X5_EISA_TOTAL_SIZE), 
        !          1258:                       lp->adapter_name);
        !          1259:            
        !          1260:        lp->rxRingSize = NUM_RX_DESC;
        !          1261:        lp->txRingSize = NUM_TX_DESC;
        !          1262:            
        !          1263:        /* Write the end of list marker to the descriptor lists */
        !          1264:        lp->rx_ring[lp->rxRingSize - 1].des1 |= cpu_to_le32(RD_RER);
        !          1265:        lp->tx_ring[lp->txRingSize - 1].des1 |= cpu_to_le32(TD_TER);
        !          1266:            
        !          1267:        /* Tell the adapter where the TX/RX rings are located. */
        !          1268:        outl(virt_to_bus(lp->rx_ring), DE4X5_RRBA);
        !          1269:        outl(virt_to_bus(lp->tx_ring), DE4X5_TRBA);
        !          1270:            
        !          1271:        /* Initialise the IRQ mask and Enable/Disable */
        !          1272:        lp->irq_mask = IMR_RIM | IMR_TIM | IMR_TUM | IMR_UNM;
        !          1273:        lp->irq_en   = IMR_NIM | IMR_AIM;
        !          1274: 
        !          1275:        /* Create a loopback packet frame for later media probing */
        !          1276:        create_packet(dev, lp->frame, sizeof(lp->frame));
        !          1277: 
        !          1278:        /* Check if the RX overflow bug needs testing for */
        !          1279:        i = cfrv & 0x000000fe;
        !          1280:        if ((lp->chipset == DC21140) && (i == 0x20)) {
        !          1281:            lp->rx_ovf = 1;
        !          1282:        }
        !          1283: 
        !          1284:        /* Initialise the SROM pointers if possible */
        !          1285:        if (lp->useSROM) {
        !          1286:            lp->state = INITIALISED;
        !          1287:            if (srom_infoleaf_info(dev)) {
        !          1288:                return -ENXIO;
        !          1289:            }
        !          1290:            srom_init(dev);
        !          1291:        }
        !          1292: 
        !          1293:        lp->state = CLOSED;
        !          1294: 
        !          1295:        /*
        !          1296:        ** Check for an MII interface
        !          1297:        */
        !          1298:        if ((lp->chipset != DC21040) && (lp->chipset != DC21041)) {
        !          1299:            mii_get_phy(dev);
        !          1300:        }
        !          1301:        
        !          1302: #ifndef __sparc_v9__
        !          1303:        printk("      and requires IRQ%d (provided by %s).\n", dev->irq,
        !          1304: #else
        !          1305:        printk("      and requires IRQ%x (provided by %s).\n", dev->irq,
        !          1306: #endif
        !          1307:               ((lp->bus == PCI) ? "PCI BIOS" : "EISA CNFG"));
        !          1308:     }
        !          1309:     
        !          1310:     if (de4x5_debug & DEBUG_VERSION) {
        !          1311:        printk(version);
        !          1312:     }
        !          1313:     
        !          1314:     /* The DE4X5-specific entries in the device structure. */
        !          1315:     dev->open = &de4x5_open;
        !          1316:     dev->hard_start_xmit = &de4x5_queue_pkt;
        !          1317:     dev->stop = &de4x5_close;
        !          1318:     dev->get_stats = &de4x5_get_stats;
        !          1319:     dev->set_multicast_list = &set_multicast_list;
        !          1320:     dev->do_ioctl = &de4x5_ioctl;
        !          1321:     
        !          1322:     dev->mem_start = 0;
        !          1323:     
        !          1324:     /* Fill in the generic fields of the device structure. */
        !          1325:     ether_setup(dev);
        !          1326:     
        !          1327:     /* Let the adapter sleep to save power */
        !          1328:     yawn(dev, SLEEP);
        !          1329:     
        !          1330:     return status;
        !          1331: }
        !          1332: 
        !          1333: 
        !          1334: static int
        !          1335: de4x5_open(struct device *dev)
        !          1336: {
        !          1337:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1338:     u_long iobase = dev->base_addr;
        !          1339:     int i, status = 0;
        !          1340:     s32 omr;
        !          1341: 
        !          1342:     /* Allocate the RX buffers */
        !          1343:     for (i=0; i<lp->rxRingSize; i++) {
        !          1344:        if (de4x5_alloc_rx_buff(dev, i, 0) == NULL) {
        !          1345:            de4x5_free_rx_buffs(dev);
        !          1346:            return -EAGAIN;
        !          1347:        }
        !          1348:     }
        !          1349: 
        !          1350:     /*
        !          1351:     ** Wake up the adapter
        !          1352:     */
        !          1353:     yawn(dev, WAKEUP);
        !          1354: 
        !          1355:     /* 
        !          1356:     ** Re-initialize the DE4X5... 
        !          1357:     */
        !          1358:     status = de4x5_init(dev);
        !          1359:     
        !          1360:     lp->state = OPEN;
        !          1361:     de4x5_dbg_open(dev);
        !          1362:     
        !          1363:     if (request_irq(dev->irq, (void *)de4x5_interrupt, SA_SHIRQ, 
        !          1364:                                                     lp->adapter_name, dev)) {
        !          1365:        printk("de4x5_open(): Requested IRQ%d is busy - attemping FAST/SHARE...", dev->irq);
        !          1366:        if (request_irq(dev->irq, de4x5_interrupt, SA_INTERRUPT | SA_SHIRQ,
        !          1367:                                                     lp->adapter_name, dev)) {
        !          1368:            printk("\n              Cannot get IRQ- reconfigure your hardware.\n");
        !          1369:            disable_ast(dev);
        !          1370:            de4x5_free_rx_buffs(dev);
        !          1371:            de4x5_free_tx_buffs(dev);
        !          1372:            yawn(dev, SLEEP);
        !          1373:            lp->state = CLOSED;
        !          1374:            return -EAGAIN;
        !          1375:        } else {
        !          1376:            printk("\n              Succeeded, but you should reconfigure your hardware to avoid this.\n");
        !          1377:            printk("WARNING: there may be IRQ related problems in heavily loaded systems.\n");
        !          1378:        }
        !          1379:     }
        !          1380: 
        !          1381:     dev->tbusy = 0;                         
        !          1382:     dev->start = 1;
        !          1383:     lp->interrupt = UNMASK_INTERRUPTS;
        !          1384:     dev->trans_start = jiffies;
        !          1385:     
        !          1386:     START_DE4X5;
        !          1387:        
        !          1388:     de4x5_setup_intr(dev);
        !          1389:     
        !          1390:     if (de4x5_debug & DEBUG_OPEN) {
        !          1391:        printk("\tsts:  0x%08x\n", inl(DE4X5_STS));
        !          1392:        printk("\tbmr:  0x%08x\n", inl(DE4X5_BMR));
        !          1393:        printk("\timr:  0x%08x\n", inl(DE4X5_IMR));
        !          1394:        printk("\tomr:  0x%08x\n", inl(DE4X5_OMR));
        !          1395:        printk("\tsisr: 0x%08x\n", inl(DE4X5_SISR));
        !          1396:        printk("\tsicr: 0x%08x\n", inl(DE4X5_SICR));
        !          1397:        printk("\tstrr: 0x%08x\n", inl(DE4X5_STRR));
        !          1398:        printk("\tsigr: 0x%08x\n", inl(DE4X5_SIGR));
        !          1399:     }
        !          1400:     
        !          1401:     MOD_INC_USE_COUNT;
        !          1402:     
        !          1403:     return status;
        !          1404: }
        !          1405: 
        !          1406: /*
        !          1407: ** Initialize the DE4X5 operating conditions. NB: a chip problem with the
        !          1408: ** DC21140 requires using perfect filtering mode for that chip. Since I can't
        !          1409: ** see why I'd want > 14 multicast addresses, I have changed all chips to use
        !          1410: ** the perfect filtering mode. Keep the DMA burst length at 8: there seems
        !          1411: ** to be data corruption problems if it is larger (UDP errors seen from a
        !          1412: ** ttcp source).
        !          1413: */
        !          1414: static int
        !          1415: de4x5_init(struct device *dev)
        !          1416: {  
        !          1417:     /* Lock out other processes whilst setting up the hardware */
        !          1418:     test_and_set_bit(0, (void *)&dev->tbusy);
        !          1419:     
        !          1420:     de4x5_sw_reset(dev);
        !          1421:     
        !          1422:     /* Autoconfigure the connected port */
        !          1423:     autoconf_media(dev);
        !          1424:     
        !          1425:     return 0;
        !          1426: }
        !          1427: 
        !          1428: static int
        !          1429: de4x5_sw_reset(struct device *dev)
        !          1430: {
        !          1431:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1432:     u_long iobase = dev->base_addr;
        !          1433:     int i, j, status = 0;
        !          1434:     s32 bmr, omr;
        !          1435:     
        !          1436:     /* Select the MII or SRL port now and RESET the MAC */
        !          1437:     if (!lp->useSROM) {
        !          1438:        if (lp->phy[lp->active].id != 0) {
        !          1439:            lp->infoblock_csr6 = OMR_SDP | OMR_PS | OMR_HBD;
        !          1440:        } else {
        !          1441:            lp->infoblock_csr6 = OMR_SDP | OMR_TTM;
        !          1442:        }
        !          1443:        de4x5_switch_mac_port(dev);
        !          1444:     }
        !          1445: 
        !          1446:     /* 
        !          1447:     ** Set the programmable burst length to 8 longwords for all the DC21140
        !          1448:     ** Fasternet chips and 4 longwords for all others: DMA errors result
        !          1449:     ** without these values. Cache align 16 long.
        !          1450:     */
        !          1451:     bmr = (lp->chipset==DC21140 ? PBL_8 : PBL_4) | DESC_SKIP_LEN | CACHE_ALIGN;
        !          1452:     bmr |= ((lp->chipset & ~0x00ff)==DC2114x ? BMR_RML : 0);
        !          1453:     outl(bmr, DE4X5_BMR);
        !          1454: 
        !          1455:     omr = inl(DE4X5_OMR) & ~OMR_PR;             /* Turn off promiscuous mode */
        !          1456:     if (lp->chipset == DC21140) {
        !          1457:        omr |= (OMR_SDP | OMR_SB);
        !          1458:     }
        !          1459:     lp->setup_f = PERFECT;
        !          1460:     outl(virt_to_bus(lp->rx_ring), DE4X5_RRBA);
        !          1461:     outl(virt_to_bus(lp->tx_ring), DE4X5_TRBA);
        !          1462:     
        !          1463:     lp->rx_new = lp->rx_old = 0;
        !          1464:     lp->tx_new = lp->tx_old = 0;
        !          1465:     
        !          1466:     for (i = 0; i < lp->rxRingSize; i++) {
        !          1467:        lp->rx_ring[i].status = cpu_to_le32(R_OWN);
        !          1468:     }
        !          1469:     
        !          1470:     for (i = 0; i < lp->txRingSize; i++) {
        !          1471:        lp->tx_ring[i].status = cpu_to_le32(0);
        !          1472:     }
        !          1473:     
        !          1474:     barrier();
        !          1475: 
        !          1476:     /* Build the setup frame depending on filtering mode */
        !          1477:     SetMulticastFilter(dev);
        !          1478:     
        !          1479:     load_packet(dev, lp->setup_frame, PERFECT_F|TD_SET|SETUP_FRAME_LEN, NULL);
        !          1480:     outl(omr|OMR_ST, DE4X5_OMR);
        !          1481: 
        !          1482:     /* Poll for setup frame completion (adapter interrupts are disabled now) */
        !          1483:     sti();                                       /* Ensure timer interrupts */
        !          1484:     for (j=0, i=0;(i<500) && (j==0);i++) {       /* Upto 500ms delay */
        !          1485:        udelay(1000);
        !          1486:        if ((s32)le32_to_cpu(lp->tx_ring[lp->tx_new].status) >= 0) j=1;
        !          1487:     }
        !          1488:     outl(omr, DE4X5_OMR);                        /* Stop everything! */
        !          1489: 
        !          1490:     if (j == 0) {
        !          1491:        printk("%s: Setup frame timed out, status %08x\n", dev->name, 
        !          1492:               inl(DE4X5_STS));
        !          1493:        status = -EIO;
        !          1494:     }
        !          1495:     
        !          1496:     lp->tx_new = (++lp->tx_new) % lp->txRingSize;
        !          1497:     lp->tx_old = lp->tx_new;
        !          1498: 
        !          1499:     return status;
        !          1500: }
        !          1501: 
        !          1502: /* 
        !          1503: ** Writes a socket buffer address to the next available transmit descriptor.
        !          1504: */
        !          1505: static int
        !          1506: de4x5_queue_pkt(struct sk_buff *skb, struct device *dev)
        !          1507: {
        !          1508:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1509:     u_long iobase = dev->base_addr;
        !          1510:     int status = 0;
        !          1511: 
        !          1512:     test_and_set_bit(0, (void*)&dev->tbusy);     /* Stop send re-tries */
        !          1513:     if (lp->tx_enable == NO) {                   /* Cannot send for now */
        !          1514:        return -1;                                
        !          1515:     }
        !          1516:     
        !          1517:     /*
        !          1518:     ** Clean out the TX ring asynchronously to interrupts - sometimes the
        !          1519:     ** interrupts are lost by delayed descriptor status updates relative to
        !          1520:     ** the irq assertion, especially with a busy PCI bus.
        !          1521:     */
        !          1522:     cli();
        !          1523:     de4x5_tx(dev);
        !          1524:     sti();
        !          1525: 
        !          1526:     /* Test if cache is already locked - requeue skb if so */
        !          1527:     if (test_and_set_bit(0, (void *)&lp->cache.lock) && !lp->interrupt) 
        !          1528:        return -1;
        !          1529: 
        !          1530:     /* Transmit descriptor ring full or stale skb */
        !          1531:     if (dev->tbusy || lp->tx_skb[lp->tx_new]) {
        !          1532:        if (lp->interrupt) {
        !          1533:            de4x5_putb_cache(dev, skb);          /* Requeue the buffer */
        !          1534:        } else {
        !          1535:            de4x5_put_cache(dev, skb);
        !          1536:        }
        !          1537:        if (de4x5_debug & DEBUG_TX) {
        !          1538:            printk("%s: transmit busy, lost media or stale skb found:\n  STS:%08x\n  tbusy:%ld\n  IMR:%08x\n  OMR:%08x\n Stale skb: %s\n",dev->name, inl(DE4X5_STS), dev->tbusy, inl(DE4X5_IMR), inl(DE4X5_OMR), (lp->tx_skb[lp->tx_new] ? "YES" : "NO"));
        !          1539:        }
        !          1540:     } else if (skb->len > 0) {
        !          1541:        /* If we already have stuff queued locally, use that first */
        !          1542:        if (lp->cache.skb && !lp->interrupt) {
        !          1543:            de4x5_put_cache(dev, skb);
        !          1544:            skb = de4x5_get_cache(dev);
        !          1545:        }
        !          1546: 
        !          1547:        while (skb && !dev->tbusy && !lp->tx_skb[lp->tx_new]) {
        !          1548:            cli();
        !          1549:            test_and_set_bit(0, (void*)&dev->tbusy);
        !          1550:            load_packet(dev, skb->data, TD_IC | TD_LS | TD_FS | skb->len, skb);
        !          1551: #if    LINUX_VERSION_CODE >= ((2 << 16) | (1 << 8))
        !          1552:            lp->stats.tx_bytes += skb->len;
        !          1553: #endif
        !          1554:            outl(POLL_DEMAND, DE4X5_TPD);/* Start the TX */
        !          1555:                
        !          1556:            lp->tx_new = (++lp->tx_new) % lp->txRingSize;
        !          1557:            dev->trans_start = jiffies;
        !          1558:                    
        !          1559:            if (TX_BUFFS_AVAIL) {
        !          1560:                dev->tbusy = 0;         /* Another pkt may be queued */
        !          1561:            }
        !          1562:            skb = de4x5_get_cache(dev);
        !          1563:            sti();
        !          1564:        }
        !          1565:        if (skb) de4x5_putb_cache(dev, skb);
        !          1566:     }
        !          1567:     
        !          1568:     lp->cache.lock = 0;
        !          1569: 
        !          1570:     return status;
        !          1571: }
        !          1572: 
        !          1573: /*
        !          1574: ** The DE4X5 interrupt handler. 
        !          1575: ** 
        !          1576: ** I/O Read/Writes through intermediate PCI bridges are never 'posted',
        !          1577: ** so that the asserted interrupt always has some real data to work with -
        !          1578: ** if these I/O accesses are ever changed to memory accesses, ensure the
        !          1579: ** STS write is read immediately to complete the transaction if the adapter
        !          1580: ** is not on bus 0. Lost interrupts can still occur when the PCI bus load
        !          1581: ** is high and descriptor status bits cannot be set before the associated
        !          1582: ** interrupt is asserted and this routine entered.
        !          1583: */
        !          1584: static void
        !          1585: de4x5_interrupt(int irq, void *dev_id, struct pt_regs *regs)
        !          1586: {
        !          1587:     struct device *dev = (struct device *)dev_id;
        !          1588:     struct de4x5_private *lp;
        !          1589:     s32 imr, omr, sts, limit;
        !          1590:     u_long iobase;
        !          1591:     
        !          1592:     if (dev == NULL) {
        !          1593:        printk ("de4x5_interrupt(): irq %d for unknown device.\n", irq);
        !          1594:        return;
        !          1595:     }
        !          1596:     lp = (struct de4x5_private *)dev->priv;
        !          1597:     iobase = dev->base_addr;
        !          1598:        
        !          1599:     DISABLE_IRQs;                        /* Ensure non re-entrancy */
        !          1600: 
        !          1601:     if (test_and_set_bit(MASK_INTERRUPTS, (void*) &lp->interrupt))
        !          1602:        printk("%s: Re-entering the interrupt handler.\n", dev->name);
        !          1603: 
        !          1604: #if    LINUX_VERSION_CODE >= ((2 << 16) | (1 << 8))
        !          1605:     synchronize_irq();
        !          1606: #endif
        !          1607:        
        !          1608:     for (limit=0; limit<8; limit++) {
        !          1609:        sts = inl(DE4X5_STS);            /* Read IRQ status */
        !          1610:        outl(sts, DE4X5_STS);            /* Reset the board interrupts */
        !          1611:            
        !          1612:        if (!(sts & lp->irq_mask)) break;/* All done */
        !          1613:            
        !          1614:        if (sts & (STS_RI | STS_RU))     /* Rx interrupt (packet[s] arrived) */
        !          1615:          de4x5_rx(dev);
        !          1616:            
        !          1617:        if (sts & (STS_TI | STS_TU))     /* Tx interrupt (packet sent) */
        !          1618:          de4x5_tx(dev); 
        !          1619:            
        !          1620:        if (sts & STS_LNF) {             /* TP Link has failed */
        !          1621:            lp->irq_mask &= ~IMR_LFM;
        !          1622:        }
        !          1623:            
        !          1624:        if (sts & STS_UNF) {             /* Transmit underrun */
        !          1625:            de4x5_txur(dev);
        !          1626:        }
        !          1627:            
        !          1628:        if (sts & STS_SE) {              /* Bus Error */
        !          1629:            STOP_DE4X5;
        !          1630:            printk("%s: Fatal bus error occurred, sts=%#8x, device stopped.\n",
        !          1631:                   dev->name, sts);
        !          1632:            return;
        !          1633:        }
        !          1634:     }
        !          1635: 
        !          1636:     /* Load the TX ring with any locally stored packets */
        !          1637:     if (!test_and_set_bit(0, (void *)&lp->cache.lock)) {
        !          1638:        while (lp->cache.skb && !dev->tbusy && lp->tx_enable) {
        !          1639:            de4x5_queue_pkt(de4x5_get_cache(dev), dev);
        !          1640:        }
        !          1641:        lp->cache.lock = 0;
        !          1642:     }
        !          1643: 
        !          1644:     lp->interrupt = UNMASK_INTERRUPTS;
        !          1645:     ENABLE_IRQs;
        !          1646:     
        !          1647:     return;
        !          1648: }
        !          1649: 
        !          1650: static int
        !          1651: de4x5_rx(struct device *dev)
        !          1652: {
        !          1653:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1654:     u_long iobase = dev->base_addr;
        !          1655:     int entry;
        !          1656:     s32 status;
        !          1657:     
        !          1658:     for (entry=lp->rx_new; (s32)le32_to_cpu(lp->rx_ring[entry].status)>=0;
        !          1659:                                                            entry=lp->rx_new) {
        !          1660:        status = (s32)le32_to_cpu(lp->rx_ring[entry].status);
        !          1661:        
        !          1662:        if (lp->rx_ovf) {
        !          1663:            if (inl(DE4X5_MFC) & MFC_FOCM) {
        !          1664:                de4x5_rx_ovfc(dev);
        !          1665:                break;
        !          1666:            }
        !          1667:        }
        !          1668: 
        !          1669:        if (status & RD_FS) {                 /* Remember the start of frame */
        !          1670:            lp->rx_old = entry;
        !          1671:        }
        !          1672:        
        !          1673:        if (status & RD_LS) {                 /* Valid frame status */
        !          1674:            if (lp->tx_enable) lp->linkOK++;
        !          1675:            if (status & RD_ES) {             /* There was an error. */
        !          1676:                lp->stats.rx_errors++;        /* Update the error stats. */
        !          1677:                if (status & (RD_RF | RD_TL)) lp->stats.rx_frame_errors++;
        !          1678:                if (status & RD_CE)           lp->stats.rx_crc_errors++;
        !          1679:                if (status & RD_OF)           lp->stats.rx_fifo_errors++;
        !          1680:                if (status & RD_TL)           lp->stats.rx_length_errors++;
        !          1681:                if (status & RD_RF)           lp->pktStats.rx_runt_frames++;
        !          1682:                if (status & RD_CS)           lp->pktStats.rx_collision++;
        !          1683:                if (status & RD_DB)           lp->pktStats.rx_dribble++;
        !          1684:                if (status & RD_OF)           lp->pktStats.rx_overflow++;
        !          1685:            } else {                          /* A valid frame received */
        !          1686:                struct sk_buff *skb;
        !          1687:                short pkt_len = (short)(le32_to_cpu(lp->rx_ring[entry].status)
        !          1688:                                                                    >> 16) - 4;
        !          1689:                
        !          1690:                if ((skb = de4x5_alloc_rx_buff(dev, entry, pkt_len)) == NULL) {
        !          1691:                    printk("%s: Insufficient memory; nuking packet.\n", 
        !          1692:                                                                    dev->name);
        !          1693:                    lp->stats.rx_dropped++;
        !          1694:                } else {
        !          1695:                    de4x5_dbg_rx(skb, pkt_len);
        !          1696: 
        !          1697:                    /* Push up the protocol stack */
        !          1698:                    skb->protocol=eth_type_trans(skb,dev);
        !          1699:                    netif_rx(skb);
        !          1700:                    
        !          1701:                    /* Update stats */
        !          1702:                    lp->stats.rx_packets++;
        !          1703: #if    LINUX_VERSION_CODE >= ((2 << 16) | (1 << 8))
        !          1704:                    lp->stats.rx_bytes += pkt_len;
        !          1705: #endif
        !          1706:                    de4x5_local_stats(dev, skb->data, pkt_len);
        !          1707:                }
        !          1708:            }
        !          1709:            
        !          1710:            /* Change buffer ownership for this frame, back to the adapter */
        !          1711:            for (;lp->rx_old!=entry;lp->rx_old=(++lp->rx_old)%lp->rxRingSize) {
        !          1712:                lp->rx_ring[lp->rx_old].status = cpu_to_le32(R_OWN);
        !          1713:                barrier();
        !          1714:            }
        !          1715:            lp->rx_ring[entry].status = cpu_to_le32(R_OWN);
        !          1716:            barrier();
        !          1717:        }
        !          1718:        
        !          1719:        /*
        !          1720:        ** Update entry information
        !          1721:        */
        !          1722:        lp->rx_new = (++lp->rx_new) % lp->rxRingSize;
        !          1723:     }
        !          1724:     
        !          1725:     return 0;
        !          1726: }
        !          1727: 
        !          1728: /*
        !          1729: ** Buffer sent - check for TX buffer errors.
        !          1730: */
        !          1731: static int
        !          1732: de4x5_tx(struct device *dev)
        !          1733: {
        !          1734:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1735:     u_long iobase = dev->base_addr;
        !          1736:     int entry;
        !          1737:     s32 status;
        !          1738:     
        !          1739:     for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) {
        !          1740:        status = (s32)le32_to_cpu(lp->tx_ring[entry].status);
        !          1741:        if (status < 0) {                     /* Buffer not sent yet */
        !          1742:            break;
        !          1743:        } else if (status != 0x7fffffff) {    /* Not setup frame */
        !          1744:            if (status & TD_ES) {             /* An error happened */
        !          1745:                lp->stats.tx_errors++; 
        !          1746:                if (status & TD_NC) lp->stats.tx_carrier_errors++;
        !          1747:                if (status & TD_LC) lp->stats.tx_window_errors++;
        !          1748:                if (status & TD_UF) lp->stats.tx_fifo_errors++;
        !          1749:                if (status & TD_EC) lp->pktStats.excessive_collisions++;
        !          1750:                if (status & TD_DE) lp->stats.tx_aborted_errors++;
        !          1751:            
        !          1752:                if (TX_PKT_PENDING) {
        !          1753:                    outl(POLL_DEMAND, DE4X5_TPD);/* Restart a stalled TX */
        !          1754:                }
        !          1755:            } else {                      /* Packet sent */
        !          1756:                lp->stats.tx_packets++;
        !          1757:                if (lp->tx_enable) lp->linkOK++;
        !          1758:            }
        !          1759:            /* Update the collision counter */
        !          1760:            lp->stats.collisions += ((status & TD_EC) ? 16 : 
        !          1761:                                                      ((status & TD_CC) >> 3));
        !          1762: 
        !          1763:            /* Free the buffer. */
        !          1764:            if (lp->tx_skb[entry] != NULL) {
        !          1765:                dev_kfree_skb(lp->tx_skb[entry], FREE_WRITE);
        !          1766:                lp->tx_skb[entry] = NULL;
        !          1767:            }
        !          1768:        }
        !          1769:        
        !          1770:        /* Update all the pointers */
        !          1771:        lp->tx_old = (++lp->tx_old) % lp->txRingSize;
        !          1772:     }
        !          1773: 
        !          1774:     if (TX_BUFFS_AVAIL && dev->tbusy) {  /* Any resources available? */
        !          1775:        dev->tbusy = 0;                  /* Clear TX busy flag */
        !          1776:        if (lp->interrupt) mark_bh(NET_BH);
        !          1777:     }
        !          1778:        
        !          1779:     return 0;
        !          1780: }
        !          1781: 
        !          1782: static int
        !          1783: de4x5_ast(struct device *dev)
        !          1784: {
        !          1785:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1786:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          1787:     
        !          1788:     disable_ast(dev);
        !          1789:     
        !          1790:     if (lp->useSROM) {
        !          1791:        next_tick = srom_autoconf(dev);
        !          1792:     } else if (lp->chipset == DC21140) {
        !          1793:        next_tick = dc21140m_autoconf(dev);
        !          1794:     } else if (lp->chipset == DC21041) {
        !          1795:        next_tick = dc21041_autoconf(dev);
        !          1796:     } else if (lp->chipset == DC21040) {
        !          1797:        next_tick = dc21040_autoconf(dev);
        !          1798:     }
        !          1799:     lp->linkOK = 0;
        !          1800:     enable_ast(dev, next_tick);
        !          1801:     
        !          1802:     return 0;
        !          1803: }
        !          1804: 
        !          1805: static int
        !          1806: de4x5_txur(struct device *dev)
        !          1807: {
        !          1808:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1809:     u_long iobase = dev->base_addr;
        !          1810:     int omr;
        !          1811: 
        !          1812:     omr = inl(DE4X5_OMR);
        !          1813:     if (!(omr & OMR_SF) || (lp->chipset==DC21041) || (lp->chipset==DC21040)) {
        !          1814:        omr &= ~(OMR_ST|OMR_SR);
        !          1815:        outl(omr, DE4X5_OMR);
        !          1816:        while (inl(DE4X5_STS) & STS_TS);
        !          1817:        if ((omr & OMR_TR) < OMR_TR) {
        !          1818:            omr += 0x4000;
        !          1819:        } else {
        !          1820:            omr |= OMR_SF;
        !          1821:        }
        !          1822:        outl(omr | OMR_ST | OMR_SR, DE4X5_OMR);
        !          1823:     }
        !          1824:     
        !          1825:     return 0;
        !          1826: }
        !          1827: 
        !          1828: static int 
        !          1829: de4x5_rx_ovfc(struct device *dev)
        !          1830: {
        !          1831:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1832:     u_long iobase = dev->base_addr;
        !          1833:     int omr;
        !          1834: 
        !          1835:     omr = inl(DE4X5_OMR);
        !          1836:     outl(omr & ~OMR_SR, DE4X5_OMR);
        !          1837:     while (inl(DE4X5_STS) & STS_RS);
        !          1838: 
        !          1839:     for (; (s32)le32_to_cpu(lp->rx_ring[lp->rx_new].status)>=0;) {
        !          1840:        lp->rx_ring[lp->rx_new].status = cpu_to_le32(R_OWN);
        !          1841:        lp->rx_new = (++lp->rx_new % lp->rxRingSize);
        !          1842:     }
        !          1843: 
        !          1844:     outl(omr, DE4X5_OMR);
        !          1845:     
        !          1846:     return 0;
        !          1847: }
        !          1848: 
        !          1849: static int
        !          1850: de4x5_close(struct device *dev)
        !          1851: {
        !          1852:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1853:     u_long iobase = dev->base_addr;
        !          1854:     s32 imr, omr;
        !          1855:     
        !          1856:     disable_ast(dev);
        !          1857:     dev->start = 0;
        !          1858:     dev->tbusy = 1;
        !          1859:     
        !          1860:     if (de4x5_debug & DEBUG_CLOSE) {
        !          1861:        printk("%s: Shutting down ethercard, status was %8.8x.\n",
        !          1862:               dev->name, inl(DE4X5_STS));
        !          1863:     }
        !          1864:     
        !          1865:     /* 
        !          1866:     ** We stop the DE4X5 here... mask interrupts and stop TX & RX
        !          1867:     */
        !          1868:     DISABLE_IRQs;
        !          1869:     STOP_DE4X5;
        !          1870:     
        !          1871:     /* Free the associated irq */
        !          1872:     free_irq(dev->irq, dev);
        !          1873:     lp->state = CLOSED;
        !          1874: 
        !          1875:     /* Free any socket buffers */
        !          1876:     de4x5_free_rx_buffs(dev);
        !          1877:     de4x5_free_tx_buffs(dev);
        !          1878:     
        !          1879:     MOD_DEC_USE_COUNT;
        !          1880:     
        !          1881:     /* Put the adapter to sleep to save power */
        !          1882:     yawn(dev, SLEEP);
        !          1883:     
        !          1884:     return 0;
        !          1885: }
        !          1886: 
        !          1887: static struct net_device_stats *
        !          1888: de4x5_get_stats(struct device *dev)
        !          1889: {
        !          1890:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1891:     u_long iobase = dev->base_addr;
        !          1892:     
        !          1893:     lp->stats.rx_missed_errors = (int)(inl(DE4X5_MFC) & (MFC_OVFL | MFC_CNTR));
        !          1894:     
        !          1895:     return &lp->stats;
        !          1896: }
        !          1897: 
        !          1898: static void
        !          1899: de4x5_local_stats(struct device *dev, char *buf, int pkt_len)
        !          1900: {
        !          1901:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1902:     int i;
        !          1903: 
        !          1904:     for (i=1; i<DE4X5_PKT_STAT_SZ-1; i++) {
        !          1905:         if (pkt_len < (i*DE4X5_PKT_BIN_SZ)) {
        !          1906:            lp->pktStats.bins[i]++;
        !          1907:            i = DE4X5_PKT_STAT_SZ;
        !          1908:        }
        !          1909:     }
        !          1910:     if (buf[0] & 0x01) {          /* Multicast/Broadcast */
        !          1911:         if ((*(s32 *)&buf[0] == -1) && (*(s16 *)&buf[4] == -1)) {
        !          1912:            lp->pktStats.broadcast++;
        !          1913:        } else {
        !          1914:            lp->pktStats.multicast++;
        !          1915:        }
        !          1916:     } else if ((*(s32 *)&buf[0] == *(s32 *)&dev->dev_addr[0]) &&
        !          1917:               (*(s16 *)&buf[4] == *(s16 *)&dev->dev_addr[4])) {
        !          1918:         lp->pktStats.unicast++;
        !          1919:     }
        !          1920:                
        !          1921:     lp->pktStats.bins[0]++;       /* Duplicates stats.rx_packets */
        !          1922:     if (lp->pktStats.bins[0] == 0) { /* Reset counters */
        !          1923:         memset((char *)&lp->pktStats, 0, sizeof(lp->pktStats));
        !          1924:     }
        !          1925: 
        !          1926:     return;
        !          1927: }
        !          1928: 
        !          1929: static void
        !          1930: load_packet(struct device *dev, char *buf, u32 flags, struct sk_buff *skb)
        !          1931: {
        !          1932:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1933:     
        !          1934:     lp->tx_ring[lp->tx_new].buf = cpu_to_le32(virt_to_bus(buf));
        !          1935:     lp->tx_ring[lp->tx_new].des1 &= cpu_to_le32(TD_TER);
        !          1936:     lp->tx_ring[lp->tx_new].des1 |= cpu_to_le32(flags);
        !          1937:     lp->tx_skb[lp->tx_new] = skb;
        !          1938:     barrier();
        !          1939:     lp->tx_ring[lp->tx_new].status = cpu_to_le32(T_OWN);
        !          1940:     barrier();
        !          1941:     
        !          1942:     return;
        !          1943: }
        !          1944: 
        !          1945: /*
        !          1946: ** Set or clear the multicast filter for this adaptor.
        !          1947: */
        !          1948: static void
        !          1949: set_multicast_list(struct device *dev)
        !          1950: {
        !          1951:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1952:     u_long iobase = dev->base_addr;
        !          1953: 
        !          1954:     /* First, double check that the adapter is open */
        !          1955:     if (lp->state == OPEN) {
        !          1956:        if (dev->flags & IFF_PROMISC) {         /* set promiscuous mode */
        !          1957:            u32 omr;
        !          1958:            omr = inl(DE4X5_OMR);
        !          1959:            omr |= OMR_PR;
        !          1960:            outl(omr, DE4X5_OMR);
        !          1961:        } else { 
        !          1962:            SetMulticastFilter(dev);
        !          1963:            load_packet(dev, lp->setup_frame, TD_IC | PERFECT_F | TD_SET | 
        !          1964:                                                        SETUP_FRAME_LEN, NULL);
        !          1965:            
        !          1966:            lp->tx_new = (++lp->tx_new) % lp->txRingSize;
        !          1967:            outl(POLL_DEMAND, DE4X5_TPD);       /* Start the TX */
        !          1968:            dev->trans_start = jiffies;
        !          1969:        }
        !          1970:     }
        !          1971:     
        !          1972:     return;
        !          1973: }
        !          1974: 
        !          1975: /*
        !          1976: ** Calculate the hash code and update the logical address filter
        !          1977: ** from a list of ethernet multicast addresses.
        !          1978: ** Little endian crc one liner from Matt Thomas, DEC.
        !          1979: */
        !          1980: static void
        !          1981: SetMulticastFilter(struct device *dev)
        !          1982: {
        !          1983:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          1984:     struct dev_mc_list *dmi=dev->mc_list;
        !          1985:     u_long iobase = dev->base_addr;
        !          1986:     int i, j, bit, byte;
        !          1987:     u16 hashcode;
        !          1988:     u32 omr, crc, poly = CRC_POLYNOMIAL_LE;
        !          1989:     char *pa;
        !          1990:     unsigned char *addrs;
        !          1991: 
        !          1992:     omr = inl(DE4X5_OMR);
        !          1993:     omr &= ~(OMR_PR | OMR_PM);
        !          1994:     pa = build_setup_frame(dev, ALL);        /* Build the basic frame */
        !          1995:     
        !          1996:     if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 14)) {
        !          1997:        omr |= OMR_PM;                       /* Pass all multicasts */
        !          1998:     } else if (lp->setup_f == HASH_PERF) {   /* Hash Filtering */
        !          1999:        for (i=0;i<dev->mc_count;i++) {      /* for each address in the list */
        !          2000:            addrs=dmi->dmi_addr;
        !          2001:            dmi=dmi->next;
        !          2002:            if ((*addrs & 0x01) == 1) {      /* multicast address? */ 
        !          2003:                crc = 0xffffffff;            /* init CRC for each address */
        !          2004:                for (byte=0;byte<ETH_ALEN;byte++) {/* for each address byte */
        !          2005:                                             /* process each address bit */ 
        !          2006:                    for (bit = *addrs++,j=0;j<8;j++, bit>>=1) {
        !          2007:                        crc = (crc >> 1) ^ (((crc ^ bit) & 0x01) ? poly : 0);
        !          2008:                    }
        !          2009:                }
        !          2010:                hashcode = crc & HASH_BITS;  /* hashcode is 9 LSb of CRC */
        !          2011:                
        !          2012:                byte = hashcode >> 3;        /* bit[3-8] -> byte in filter */
        !          2013:                bit = 1 << (hashcode & 0x07);/* bit[0-2] -> bit in byte */
        !          2014:                
        !          2015:                byte <<= 1;                  /* calc offset into setup frame */
        !          2016:                if (byte & 0x02) {
        !          2017:                    byte -= 1;
        !          2018:                }
        !          2019:                lp->setup_frame[byte] |= bit;
        !          2020:            }
        !          2021:        }
        !          2022:     } else {                                 /* Perfect filtering */
        !          2023:        for (j=0; j<dev->mc_count; j++) {
        !          2024:            addrs=dmi->dmi_addr;
        !          2025:            dmi=dmi->next;
        !          2026:            for (i=0; i<ETH_ALEN; i++) { 
        !          2027:                *(pa + (i&1)) = *addrs++;
        !          2028:                if (i & 0x01) pa += 4;
        !          2029:            }
        !          2030:        }
        !          2031:     }
        !          2032:     outl(omr, DE4X5_OMR);
        !          2033:     
        !          2034:     return;
        !          2035: }
        !          2036: 
        !          2037: #if !defined(__sparc_v9__) && !defined(__powerpc__) && !defined(__alpha__)
        !          2038: /*
        !          2039: ** EISA bus I/O device probe. Probe from slot 1 since slot 0 is usually
        !          2040: ** the motherboard. Upto 15 EISA devices are supported.
        !          2041: */
        !          2042: __initfunc(static void
        !          2043: eisa_probe(struct device *dev, u_long ioaddr))
        !          2044: {
        !          2045:     int i, maxSlots, status, device;
        !          2046:     u_char irq;
        !          2047:     u_short vendor;
        !          2048:     u32 cfid;
        !          2049:     u_long iobase;
        !          2050:     struct bus_type *lp = &bus;
        !          2051:     char name[DE4X5_STRLEN];
        !          2052: 
        !          2053:     if (lastEISA == MAX_EISA_SLOTS) return;/* No more EISA devices to search */
        !          2054: 
        !          2055:     lp->bus = EISA;
        !          2056:     
        !          2057:     if (ioaddr == 0) {                     /* Autoprobing */
        !          2058:        iobase = EISA_SLOT_INC;            /* Get the first slot address */
        !          2059:        i = 1;
        !          2060:        maxSlots = MAX_EISA_SLOTS;
        !          2061:     } else {                               /* Probe a specific location */
        !          2062:        iobase = ioaddr;
        !          2063:        i = (ioaddr >> 12);
        !          2064:        maxSlots = i + 1;
        !          2065:     }
        !          2066:     
        !          2067:     for (status = -ENODEV; (i<maxSlots) && (dev!=NULL); i++, iobase+=EISA_SLOT_INC) {
        !          2068:        if (EISA_signature(name, EISA_ID)) {
        !          2069:            cfid = (u32) inl(PCI_CFID);
        !          2070:            cfrv = (u_short) inl(PCI_CFRV);
        !          2071:            device = (cfid >> 8) & 0x00ffff00;
        !          2072:            vendor = (u_short) cfid;
        !          2073:            
        !          2074:            /* Read the EISA Configuration Registers */
        !          2075:            irq = inb(EISA_REG0);
        !          2076:            irq = de4x5_irq[(irq >> 1) & 0x03];
        !          2077: 
        !          2078:            if (is_DC2114x) device |= (cfrv & CFRV_RN);
        !          2079:            lp->chipset = device;
        !          2080: 
        !          2081:            /* Write the PCI Configuration Registers */
        !          2082:            outl(PCI_COMMAND_IO | PCI_COMMAND_MASTER, PCI_CFCS);
        !          2083:            outl(0x00006000, PCI_CFLT);
        !          2084:            outl(iobase, PCI_CBIO);
        !          2085:            
        !          2086:            DevicePresent(EISA_APROM);
        !          2087:            if (check_region(iobase, DE4X5_EISA_TOTAL_SIZE) == 0) {
        !          2088:                dev->irq = irq;
        !          2089:                if ((status = de4x5_hw_init(dev, iobase)) == 0) {
        !          2090:                    num_de4x5s++;
        !          2091:                    if (loading_module) link_modules(lastModule, dev);
        !          2092:                    lastEISA = i;
        !          2093:                    return;
        !          2094:                }
        !          2095:            } else if (ioaddr != 0) {
        !          2096:                printk("%s: region already allocated at 0x%04lx.\n", dev->name,iobase);
        !          2097:            }
        !          2098:        }
        !          2099:     }
        !          2100: 
        !          2101:     if (ioaddr == 0) lastEISA = i;
        !          2102: 
        !          2103:     return;
        !          2104: }
        !          2105: #endif          /* !(__sparc_v9__) && !(__powerpc__) && !defined(__alpha__)*/
        !          2106: 
        !          2107: /*
        !          2108: ** PCI bus I/O device probe
        !          2109: ** NB: PCI I/O accesses and Bus Mastering are enabled by the PCI BIOS, not
        !          2110: ** the driver. Some PCI BIOS's, pre V2.1, need the slot + features to be
        !          2111: ** enabled by the user first in the set up utility. Hence we just check for
        !          2112: ** enabled features and silently ignore the card if they're not.
        !          2113: **
        !          2114: ** STOP PRESS: Some BIOS's __require__ the driver to enable the bus mastering
        !          2115: ** bit. Here, check for I/O accesses and then set BM. If you put the card in
        !          2116: ** a non BM slot, you're on your own (and complain to the PC vendor that your
        !          2117: ** PC doesn't conform to the PCI standard)!
        !          2118: */
        !          2119: #define PCI_DEVICE    (dev_num << 3)
        !          2120: #define PCI_LAST_DEV  32
        !          2121: 
        !          2122: __initfunc(static void
        !          2123: pci_probe(struct device *dev, u_long ioaddr))
        !          2124: {
        !          2125:     u_char pb, pbus, dev_num, dnum, dev_fn, timer, tirq;
        !          2126:     u_short dev_id, vendor, index, status;
        !          2127:     u_int tmp, irq = 0, device, class = DE4X5_CLASS_CODE;
        !          2128:     u_long iobase = 0;                     /* Clear upper 32 bits in Alphas */
        !          2129:     struct bus_type *lp = &bus;
        !          2130: 
        !          2131:     if (lastPCI == NO_MORE_PCI) return;
        !          2132: 
        !          2133:     if (!pcibios_present()) {
        !          2134:        lastPCI = NO_MORE_PCI;
        !          2135:        return;          /* No PCI bus in this machine! */
        !          2136:     }
        !          2137:     
        !          2138:     lp->bus = PCI;
        !          2139:     lp->bus_num = 0;
        !          2140: 
        !          2141:     if ((ioaddr < 0x1000) && loading_module) {
        !          2142:        pbus = (u_short)(ioaddr >> 8);
        !          2143:        dnum = (u_short)(ioaddr & 0xff);
        !          2144:     } else {
        !          2145:        pbus = 0;
        !          2146:        dnum = 0;
        !          2147:     }
        !          2148: 
        !          2149:     for (index=lastPCI+1; 
        !          2150:         (pcibios_find_class(class, index, &pb, &dev_fn)!= PCIBIOS_DEVICE_NOT_FOUND);
        !          2151:         index++) {
        !          2152:        dev_num = PCI_SLOT(dev_fn);
        !          2153:        if ((!pbus && !dnum) || ((pbus == pb) && (dnum == dev_num))) {
        !          2154: #ifdef __sparc_v9__
        !          2155:            struct pci_dev *pdev;
        !          2156:            for (pdev = pci_devices; pdev; pdev = pdev->next) {
        !          2157:                if ((pdev->bus->number==pb) && (pdev->devfn==dev_fn)) break;
        !          2158:            }
        !          2159: #endif
        !          2160:            device = 0;
        !          2161:            pcibios_read_config_word(pb, PCI_DEVICE, PCI_VENDOR_ID, &vendor);
        !          2162:            pcibios_read_config_word(pb, PCI_DEVICE, PCI_DEVICE_ID, &dev_id);
        !          2163:            device = dev_id;
        !          2164:            device <<= 8;
        !          2165:            if (!(is_DC21040 || is_DC21041 || is_DC21140 || is_DC2114x)) {
        !          2166:                continue;
        !          2167:            }
        !          2168: 
        !          2169:            /* Search for an SROM on this bus */
        !          2170:            if (lp->bus_num != pb) {
        !          2171:                lp->bus_num = pb;
        !          2172:                srom_search(index);
        !          2173:            }
        !          2174: 
        !          2175:            /* Get the chip configuration revision register */
        !          2176:            pcibios_read_config_dword(pb, PCI_DEVICE, PCI_REVISION_ID, &cfrv);
        !          2177: 
        !          2178:            /* Set the device number information */
        !          2179:            lp->device = dev_num;
        !          2180:            lp->bus_num = pb;
        !          2181:            
        !          2182:            /* Set the chipset information */
        !          2183:            if (is_DC2114x) device |= (cfrv & CFRV_RN);
        !          2184:            lp->chipset = device;
        !          2185: 
        !          2186:            /* Get the board I/O address (64 bits on sparc64) */
        !          2187: #ifndef __sparc_v9__
        !          2188:            pcibios_read_config_dword(pb, PCI_DEVICE, PCI_BASE_ADDRESS_0, &tmp);
        !          2189:            iobase = tmp;
        !          2190: #else
        !          2191:            iobase = pdev->base_address[0];
        !          2192: #endif
        !          2193:            iobase &= CBIO_MASK;
        !          2194: 
        !          2195:            /* Fetch the IRQ to be used */
        !          2196: #ifndef __sparc_v9__
        !          2197:            pcibios_read_config_byte(pb, PCI_DEVICE, PCI_INTERRUPT_LINE, &tirq);
        !          2198:            irq = tirq;
        !          2199: #else
        !          2200:            irq = pdev->irq;
        !          2201: #endif
        !          2202:            if ((irq == 0) || (irq == 0xff) || ((int)irq == -1)) continue;
        !          2203:            
        !          2204:            /* Check if I/O accesses and Bus Mastering are enabled */
        !          2205:            pcibios_read_config_word(pb, PCI_DEVICE, PCI_COMMAND, &status);
        !          2206: #ifdef __powerpc__
        !          2207:            if (!(status & PCI_COMMAND_IO)) {
        !          2208:                status |= PCI_COMMAND_IO;
        !          2209:                pcibios_write_config_word(pb, PCI_DEVICE, PCI_COMMAND, status);
        !          2210:                pcibios_read_config_word(pb, PCI_DEVICE, PCI_COMMAND, &status);
        !          2211:            }
        !          2212: #endif /* __powerpc__ */
        !          2213:            if (!(status & PCI_COMMAND_IO)) continue;
        !          2214: 
        !          2215:            if (!(status & PCI_COMMAND_MASTER)) {
        !          2216:                status |= PCI_COMMAND_MASTER;
        !          2217:                pcibios_write_config_word(pb, PCI_DEVICE, PCI_COMMAND, status);
        !          2218:                pcibios_read_config_word(pb, PCI_DEVICE, PCI_COMMAND, &status);
        !          2219:            }
        !          2220:            if (!(status & PCI_COMMAND_MASTER)) continue;
        !          2221: 
        !          2222:            /* Check the latency timer for values >= 0x60 */
        !          2223:            pcibios_read_config_byte(pb, PCI_DEVICE, PCI_LATENCY_TIMER, &timer);
        !          2224:            if (timer < 0x60) {
        !          2225:                pcibios_write_config_byte(pb, PCI_DEVICE, PCI_LATENCY_TIMER, 0x60);
        !          2226:            }
        !          2227: 
        !          2228:            DevicePresent(DE4X5_APROM);
        !          2229:            if (check_region(iobase, DE4X5_PCI_TOTAL_SIZE) == 0) {
        !          2230:                dev->irq = irq;
        !          2231:                if ((status = de4x5_hw_init(dev, iobase)) == 0) {
        !          2232:                    num_de4x5s++;
        !          2233:                    lastPCI = index;
        !          2234:                    if (loading_module) link_modules(lastModule, dev);
        !          2235:                    return;
        !          2236:                }
        !          2237:            } else if (ioaddr != 0) {
        !          2238:                printk("%s: region already allocated at 0x%04lx.\n", dev->name,
        !          2239:                       iobase);
        !          2240:            }
        !          2241:        }
        !          2242:     }
        !          2243: 
        !          2244:     lastPCI = NO_MORE_PCI;
        !          2245: 
        !          2246:     return;
        !          2247: }
        !          2248: 
        !          2249: /*
        !          2250: ** This function searches the current bus (which is >0) for a DECchip with an
        !          2251: ** SROM, so that in multiport cards that have one SROM shared between multiple 
        !          2252: ** DECchips, we can find the base SROM irrespective of the BIOS scan direction.
        !          2253: ** For single port cards this is a time waster...
        !          2254: */
        !          2255: __initfunc(static void
        !          2256: srom_search(int index))
        !          2257: {
        !          2258:     u_char pb, dev_fn, tirq;
        !          2259:     u_short dev_id, dev_num, vendor, status;
        !          2260:     u_int tmp, irq = 0, device, class = DE4X5_CLASS_CODE;
        !          2261:     u_long iobase = 0;                     /* Clear upper 32 bits in Alphas */
        !          2262:     int i, j;
        !          2263:     struct bus_type *lp = &bus;
        !          2264: 
        !          2265:     for (; 
        !          2266:         (pcibios_find_class(class, index, &pb, &dev_fn)!= PCIBIOS_DEVICE_NOT_FOUND);
        !          2267:         index++) {
        !          2268: 
        !          2269:        if (lp->bus_num != pb) return;
        !          2270:        dev_num = PCI_SLOT(dev_fn);
        !          2271: #ifdef __sparc_v9__
        !          2272:        struct pci_dev *pdev;
        !          2273:        for (pdev = pci_devices; pdev; pdev = pdev->next) {
        !          2274:            if ((pdev->bus->number == pb) && (pdev->devfn == dev_fn)) break;
        !          2275:        }
        !          2276: #endif
        !          2277:        device = 0;
        !          2278:        pcibios_read_config_word(pb, PCI_DEVICE, PCI_VENDOR_ID, &vendor);
        !          2279:        pcibios_read_config_word(pb, PCI_DEVICE, PCI_DEVICE_ID, &dev_id);
        !          2280:        device = dev_id;
        !          2281:        device <<= 8;
        !          2282:        if (!(is_DC21040 || is_DC21041 || is_DC21140 || is_DC2114x)) {
        !          2283:            continue;
        !          2284:        }
        !          2285: 
        !          2286:        /* Get the chip configuration revision register */
        !          2287:        pcibios_read_config_dword(pb, PCI_DEVICE, PCI_REVISION_ID, &cfrv);
        !          2288: 
        !          2289:        /* Set the device number information */
        !          2290:        lp->device = dev_num;
        !          2291:        lp->bus_num = pb;
        !          2292:            
        !          2293:        /* Set the chipset information */
        !          2294:        if (is_DC2114x) device |= (cfrv & CFRV_RN);
        !          2295:        lp->chipset = device;
        !          2296: 
        !          2297:        /* Get the board I/O address (64 bits on sparc64) */
        !          2298: #ifndef __sparc_v9__
        !          2299:        pcibios_read_config_dword(pb, PCI_DEVICE, PCI_BASE_ADDRESS_0, &tmp);
        !          2300:        iobase = tmp;
        !          2301: #else
        !          2302:        iobase = pdev->base_address[0];
        !          2303: #endif
        !          2304:        iobase &= CBIO_MASK;
        !          2305: 
        !          2306:        /* Fetch the IRQ to be used */
        !          2307: #ifndef __sparc_v9__
        !          2308:        pcibios_read_config_byte(pb, PCI_DEVICE, PCI_INTERRUPT_LINE, &tirq);
        !          2309:        irq = tirq;
        !          2310: #else
        !          2311:        irq = pdev->irq;
        !          2312: #endif
        !          2313:        if ((irq == 0) || (irq == 0xff) || ((int)irq == -1)) continue;
        !          2314:            
        !          2315:        /* Check if I/O accesses are enabled */
        !          2316:        pcibios_read_config_word(pb, PCI_DEVICE, PCI_COMMAND, &status);
        !          2317:        if (!(status & PCI_COMMAND_IO)) continue;
        !          2318: 
        !          2319:        /* Search for a valid SROM attached to this DECchip */
        !          2320:        DevicePresent(DE4X5_APROM);
        !          2321:        for (j=0, i=0; i<ETH_ALEN; i++) {
        !          2322:            j += (u_char) *((u_char *)&lp->srom + SROM_HWADD + i);
        !          2323:        }
        !          2324:        if ((j != 0) && (j != 0x5fa)) {
        !          2325:            last.chipset = device;
        !          2326:            last.bus = pb;
        !          2327:            last.irq = irq;
        !          2328:            for (i=0; i<ETH_ALEN; i++) {
        !          2329:                last.addr[i] = (u_char)*((u_char *)&lp->srom + SROM_HWADD + i);
        !          2330:            }
        !          2331:            return;
        !          2332:        }
        !          2333:     }
        !          2334: 
        !          2335:     return;
        !          2336: }
        !          2337: 
        !          2338: __initfunc(static void
        !          2339: link_modules(struct device *dev, struct device *tmp))
        !          2340: {
        !          2341:     struct device *p=dev;
        !          2342: 
        !          2343:     if (p) {
        !          2344:        while (((struct de4x5_private *)(p->priv))->next_module) {
        !          2345:            p = ((struct de4x5_private *)(p->priv))->next_module;
        !          2346:        }
        !          2347: 
        !          2348:        if (dev != tmp) {
        !          2349:            ((struct de4x5_private *)(p->priv))->next_module = tmp;
        !          2350:        } else {
        !          2351:            ((struct de4x5_private *)(p->priv))->next_module = NULL;
        !          2352:        }
        !          2353:     }
        !          2354: 
        !          2355:     return;
        !          2356: }
        !          2357: 
        !          2358: /*
        !          2359: ** Auto configure the media here rather than setting the port at compile
        !          2360: ** time. This routine is called by de4x5_init() and when a loss of media is
        !          2361: ** detected (excessive collisions, loss of carrier, no carrier or link fail
        !          2362: ** [TP] or no recent receive activity) to check whether the user has been 
        !          2363: ** sneaky and changed the port on us.
        !          2364: */
        !          2365: static int
        !          2366: autoconf_media(struct device *dev)
        !          2367: {
        !          2368:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          2369:     u_long iobase = dev->base_addr;
        !          2370:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          2371: 
        !          2372:     lp->linkOK = 0;
        !          2373:     lp->c_media = AUTO;                     /* Bogus last media */
        !          2374:     disable_ast(dev);
        !          2375:     inl(DE4X5_MFC);                         /* Zero the lost frames counter */
        !          2376:     lp->media = INIT;
        !          2377:     lp->tcount = 0;
        !          2378: 
        !          2379:     if (lp->useSROM) {
        !          2380:        next_tick = srom_autoconf(dev);
        !          2381:     } else if (lp->chipset == DC21040) {
        !          2382:        next_tick = dc21040_autoconf(dev);
        !          2383:     } else if (lp->chipset == DC21041) {
        !          2384:        next_tick = dc21041_autoconf(dev);
        !          2385:     } else if (lp->chipset == DC21140) {
        !          2386:        next_tick = dc21140m_autoconf(dev);
        !          2387:     }
        !          2388: 
        !          2389:     enable_ast(dev, next_tick);
        !          2390:     
        !          2391:     return (lp->media);
        !          2392: }
        !          2393: 
        !          2394: /*
        !          2395: ** Autoconfigure the media when using the DC21040. AUI cannot be distinguished
        !          2396: ** from BNC as the port has a jumper to set thick or thin wire. When set for
        !          2397: ** BNC, the BNC port will indicate activity if it's not terminated correctly.
        !          2398: ** The only way to test for that is to place a loopback packet onto the
        !          2399: ** network and watch for errors. Since we're messing with the interrupt mask
        !          2400: ** register, disable the board interrupts and do not allow any more packets to
        !          2401: ** be queued to the hardware. Re-enable everything only when the media is
        !          2402: ** found.
        !          2403: ** I may have to "age out" locally queued packets so that the higher layer
        !          2404: ** timeouts don't effectively duplicate packets on the network.
        !          2405: */
        !          2406: static int
        !          2407: dc21040_autoconf(struct device *dev)
        !          2408: {
        !          2409:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          2410:     u_long iobase = dev->base_addr;
        !          2411:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          2412:     s32 imr;
        !          2413:     
        !          2414:     switch (lp->media) {
        !          2415:     case INIT:
        !          2416:        DISABLE_IRQs;
        !          2417:        lp->tx_enable = NO;
        !          2418:        lp->timeout = -1;
        !          2419:        de4x5_save_skbs(dev);
        !          2420:        if ((lp->autosense == AUTO) || (lp->autosense == TP)) {
        !          2421:            lp->media = TP;
        !          2422:        } else if ((lp->autosense == BNC) || (lp->autosense == AUI) || (lp->autosense == BNC_AUI)) {
        !          2423:            lp->media = BNC_AUI;
        !          2424:        } else if (lp->autosense == EXT_SIA) {
        !          2425:            lp->media = EXT_SIA;
        !          2426:        } else {
        !          2427:            lp->media = NC;
        !          2428:        }
        !          2429:        lp->local_state = 0;
        !          2430:        next_tick = dc21040_autoconf(dev);
        !          2431:        break;
        !          2432:        
        !          2433:     case TP:
        !          2434:        next_tick = dc21040_state(dev, 0x8f01, 0xffff, 0x0000, 3000, BNC_AUI, 
        !          2435:                                                         TP_SUSPECT, test_tp);
        !          2436:        break;
        !          2437:        
        !          2438:     case TP_SUSPECT:
        !          2439:        next_tick = de4x5_suspect_state(dev, 1000, TP, test_tp, dc21040_autoconf);
        !          2440:        break;
        !          2441:        
        !          2442:     case BNC:
        !          2443:     case AUI:
        !          2444:     case BNC_AUI:
        !          2445:        next_tick = dc21040_state(dev, 0x8f09, 0x0705, 0x0006, 3000, EXT_SIA, 
        !          2446:                                                  BNC_AUI_SUSPECT, ping_media);
        !          2447:        break;
        !          2448:        
        !          2449:     case BNC_AUI_SUSPECT:
        !          2450:        next_tick = de4x5_suspect_state(dev, 1000, BNC_AUI, ping_media, dc21040_autoconf);
        !          2451:        break;
        !          2452:        
        !          2453:     case EXT_SIA:
        !          2454:        next_tick = dc21040_state(dev, 0x3041, 0x0000, 0x0006, 3000, 
        !          2455:                                              NC, EXT_SIA_SUSPECT, ping_media);
        !          2456:        break;
        !          2457:        
        !          2458:     case EXT_SIA_SUSPECT:
        !          2459:        next_tick = de4x5_suspect_state(dev, 1000, EXT_SIA, ping_media, dc21040_autoconf);
        !          2460:        break;
        !          2461:        
        !          2462:     case NC:
        !          2463:        /* default to TP for all */
        !          2464:        reset_init_sia(dev, 0x8f01, 0xffff, 0x0000);
        !          2465:        if (lp->media != lp->c_media) {
        !          2466:            de4x5_dbg_media(dev);
        !          2467:            lp->c_media = lp->media;
        !          2468:        }
        !          2469:        lp->media = INIT;
        !          2470:        lp->tx_enable = NO;
        !          2471:        break;
        !          2472:     }
        !          2473:     
        !          2474:     return next_tick;
        !          2475: }
        !          2476: 
        !          2477: static int
        !          2478: dc21040_state(struct device *dev, int csr13, int csr14, int csr15, int timeout,
        !          2479:              int next_state, int suspect_state, 
        !          2480:              int (*fn)(struct device *, int))
        !          2481: {
        !          2482:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          2483:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          2484:     int linkBad;
        !          2485: 
        !          2486:     switch (lp->local_state) {
        !          2487:     case 0:
        !          2488:        reset_init_sia(dev, csr13, csr14, csr15);
        !          2489:        lp->local_state++;
        !          2490:        next_tick = 500;
        !          2491:        break;
        !          2492:            
        !          2493:     case 1:
        !          2494:        if (!lp->tx_enable) {
        !          2495:            linkBad = fn(dev, timeout);
        !          2496:            if (linkBad < 0) {
        !          2497:                next_tick = linkBad & ~TIMER_CB;
        !          2498:            } else {
        !          2499:                if (linkBad && (lp->autosense == AUTO)) {
        !          2500:                    lp->local_state = 0;
        !          2501:                    lp->media = next_state;
        !          2502:                } else {
        !          2503:                    de4x5_init_connection(dev);
        !          2504:                }
        !          2505:            }
        !          2506:        } else if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          2507:            lp->media = suspect_state;
        !          2508:            next_tick = 3000;
        !          2509:        }
        !          2510:        break;
        !          2511:     }
        !          2512:     
        !          2513:     return next_tick;
        !          2514: }
        !          2515: 
        !          2516: static int
        !          2517: de4x5_suspect_state(struct device *dev, int timeout, int prev_state,
        !          2518:                      int (*fn)(struct device *, int),
        !          2519:                      int (*asfn)(struct device *))
        !          2520: {
        !          2521:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          2522:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          2523:     int linkBad;
        !          2524: 
        !          2525:     switch (lp->local_state) {
        !          2526:     case 1:
        !          2527:        if (lp->linkOK) {
        !          2528:            lp->media = prev_state;
        !          2529:        } else {
        !          2530:            lp->local_state++;
        !          2531:            next_tick = asfn(dev);
        !          2532:        }
        !          2533:        break;
        !          2534: 
        !          2535:     case 2:
        !          2536:        linkBad = fn(dev, timeout);
        !          2537:        if (linkBad < 0) {
        !          2538:            next_tick = linkBad & ~TIMER_CB;
        !          2539:        } else if (!linkBad) {
        !          2540:            lp->local_state--;
        !          2541:            lp->media = prev_state;
        !          2542:        } else {
        !          2543:            lp->media = INIT;
        !          2544:            lp->tcount++;
        !          2545:        }
        !          2546:     }
        !          2547: 
        !          2548:     return next_tick;
        !          2549: }
        !          2550: 
        !          2551: /*
        !          2552: ** Autoconfigure the media when using the DC21041. AUI needs to be tested
        !          2553: ** before BNC, because the BNC port will indicate activity if it's not
        !          2554: ** terminated correctly. The only way to test for that is to place a loopback
        !          2555: ** packet onto the network and watch for errors. Since we're messing with
        !          2556: ** the interrupt mask register, disable the board interrupts and do not allow
        !          2557: ** any more packets to be queued to the hardware. Re-enable everything only
        !          2558: ** when the media is found.
        !          2559: */
        !          2560: static int
        !          2561: dc21041_autoconf(struct device *dev)
        !          2562: {
        !          2563:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          2564:     u_long iobase = dev->base_addr;
        !          2565:     s32 sts, irqs, irq_mask, imr, omr;
        !          2566:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          2567:     
        !          2568:     switch (lp->media) {
        !          2569:     case INIT:
        !          2570:        DISABLE_IRQs;
        !          2571:        lp->tx_enable = NO;
        !          2572:        lp->timeout = -1;
        !          2573:        de4x5_save_skbs(dev);          /* Save non transmitted skb's */
        !          2574:        if ((lp->autosense == AUTO) || (lp->autosense == TP_NW)) {
        !          2575:            lp->media = TP;            /* On chip auto negotiation is broken */
        !          2576:        } else if (lp->autosense == TP) {
        !          2577:            lp->media = TP;
        !          2578:        } else if (lp->autosense == BNC) {
        !          2579:            lp->media = BNC;
        !          2580:        } else if (lp->autosense == AUI) {
        !          2581:            lp->media = AUI;
        !          2582:        } else {
        !          2583:            lp->media = NC;
        !          2584:        }
        !          2585:        lp->local_state = 0;
        !          2586:        next_tick = dc21041_autoconf(dev);
        !          2587:        break;
        !          2588:        
        !          2589:     case TP_NW:
        !          2590:        if (lp->timeout < 0) {
        !          2591:            omr = inl(DE4X5_OMR);/* Set up full duplex for the autonegotiate */
        !          2592:            outl(omr | OMR_FDX, DE4X5_OMR);
        !          2593:        }
        !          2594:        irqs = STS_LNF | STS_LNP;
        !          2595:        irq_mask = IMR_LFM | IMR_LPM;
        !          2596:        sts = test_media(dev, irqs, irq_mask, 0xef01, 0xffff, 0x0008, 2400);
        !          2597:        if (sts < 0) {
        !          2598:            next_tick = sts & ~TIMER_CB;
        !          2599:        } else {
        !          2600:            if (sts & STS_LNP) {
        !          2601:                lp->media = ANS;
        !          2602:            } else {
        !          2603:                lp->media = AUI;
        !          2604:            }
        !          2605:            next_tick = dc21041_autoconf(dev);
        !          2606:        }
        !          2607:        break;
        !          2608:        
        !          2609:     case ANS:
        !          2610:        if (!lp->tx_enable) {
        !          2611:            irqs = STS_LNP;
        !          2612:            irq_mask = IMR_LPM;
        !          2613:            sts = test_ans(dev, irqs, irq_mask, 3000);
        !          2614:            if (sts < 0) {
        !          2615:                next_tick = sts & ~TIMER_CB;
        !          2616:            } else {
        !          2617:                if (!(sts & STS_LNP) && (lp->autosense == AUTO)) {
        !          2618:                    lp->media = TP;
        !          2619:                    next_tick = dc21041_autoconf(dev);
        !          2620:                } else {
        !          2621:                    lp->local_state = 1;
        !          2622:                    de4x5_init_connection(dev);
        !          2623:                }
        !          2624:            }
        !          2625:        } else if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          2626:            lp->media = ANS_SUSPECT;
        !          2627:            next_tick = 3000;
        !          2628:        }
        !          2629:        break;
        !          2630:        
        !          2631:     case ANS_SUSPECT:
        !          2632:        next_tick = de4x5_suspect_state(dev, 1000, ANS, test_tp, dc21041_autoconf);
        !          2633:        break;
        !          2634:        
        !          2635:     case TP:
        !          2636:        if (!lp->tx_enable) {
        !          2637:            if (lp->timeout < 0) {
        !          2638:                omr = inl(DE4X5_OMR);          /* Set up half duplex for TP */
        !          2639:                outl(omr & ~OMR_FDX, DE4X5_OMR);
        !          2640:            }
        !          2641:            irqs = STS_LNF | STS_LNP;
        !          2642:            irq_mask = IMR_LFM | IMR_LPM;
        !          2643:            sts = test_media(dev,irqs, irq_mask, 0xef01, 0xff3f, 0x0008, 2400);
        !          2644:            if (sts < 0) {
        !          2645:                next_tick = sts & ~TIMER_CB;
        !          2646:            } else {
        !          2647:                if (!(sts & STS_LNP) && (lp->autosense == AUTO)) {
        !          2648:                    if (inl(DE4X5_SISR) & SISR_NRA) {
        !          2649:                        lp->media = AUI;       /* Non selected port activity */
        !          2650:                    } else {
        !          2651:                        lp->media = BNC;
        !          2652:                    }
        !          2653:                    next_tick = dc21041_autoconf(dev);
        !          2654:                } else {
        !          2655:                    lp->local_state = 1;
        !          2656:                    de4x5_init_connection(dev);
        !          2657:                }
        !          2658:            }
        !          2659:        } else if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          2660:            lp->media = TP_SUSPECT;
        !          2661:            next_tick = 3000;
        !          2662:        }
        !          2663:        break;
        !          2664:        
        !          2665:     case TP_SUSPECT:
        !          2666:        next_tick = de4x5_suspect_state(dev, 1000, TP, test_tp, dc21041_autoconf);
        !          2667:        break;
        !          2668:        
        !          2669:     case AUI:
        !          2670:        if (!lp->tx_enable) {
        !          2671:            if (lp->timeout < 0) {
        !          2672:                omr = inl(DE4X5_OMR);          /* Set up half duplex for AUI */
        !          2673:                outl(omr & ~OMR_FDX, DE4X5_OMR);
        !          2674:            }
        !          2675:            irqs = 0;
        !          2676:            irq_mask = 0;
        !          2677:            sts = test_media(dev,irqs, irq_mask, 0xef09, 0xf73d, 0x000e, 1000);
        !          2678:            if (sts < 0) {
        !          2679:                next_tick = sts & ~TIMER_CB;
        !          2680:            } else {
        !          2681:                if (!(inl(DE4X5_SISR) & SISR_SRA) && (lp->autosense == AUTO)) {
        !          2682:                    lp->media = BNC;
        !          2683:                    next_tick = dc21041_autoconf(dev);
        !          2684:                } else {
        !          2685:                    lp->local_state = 1;
        !          2686:                    de4x5_init_connection(dev);
        !          2687:                }
        !          2688:            }
        !          2689:        } else if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          2690:            lp->media = AUI_SUSPECT;
        !          2691:            next_tick = 3000;
        !          2692:        }
        !          2693:        break;
        !          2694:        
        !          2695:     case AUI_SUSPECT:
        !          2696:        next_tick = de4x5_suspect_state(dev, 1000, AUI, ping_media, dc21041_autoconf);
        !          2697:        break;
        !          2698:        
        !          2699:     case BNC:
        !          2700:        switch (lp->local_state) {
        !          2701:        case 0:
        !          2702:            if (lp->timeout < 0) {
        !          2703:                omr = inl(DE4X5_OMR);          /* Set up half duplex for BNC */
        !          2704:                outl(omr & ~OMR_FDX, DE4X5_OMR);
        !          2705:            }
        !          2706:            irqs = 0;
        !          2707:            irq_mask = 0;
        !          2708:            sts = test_media(dev,irqs, irq_mask, 0xef09, 0xf73d, 0x0006, 1000);
        !          2709:            if (sts < 0) {
        !          2710:                next_tick = sts & ~TIMER_CB;
        !          2711:            } else {
        !          2712:                lp->local_state++;             /* Ensure media connected */
        !          2713:                next_tick = dc21041_autoconf(dev);
        !          2714:            }
        !          2715:            break;
        !          2716:            
        !          2717:        case 1:
        !          2718:            if (!lp->tx_enable) {
        !          2719:                if ((sts = ping_media(dev, 3000)) < 0) {
        !          2720:                    next_tick = sts & ~TIMER_CB;
        !          2721:                } else {
        !          2722:                    if (sts) {
        !          2723:                        lp->local_state = 0;
        !          2724:                        lp->media = NC;
        !          2725:                    } else {
        !          2726:                        de4x5_init_connection(dev);
        !          2727:                    }
        !          2728:                }
        !          2729:            } else if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          2730:                lp->media = BNC_SUSPECT;
        !          2731:                next_tick = 3000;
        !          2732:            }
        !          2733:            break;
        !          2734:        }
        !          2735:        break;
        !          2736:        
        !          2737:     case BNC_SUSPECT:
        !          2738:        next_tick = de4x5_suspect_state(dev, 1000, BNC, ping_media, dc21041_autoconf);
        !          2739:        break;
        !          2740:        
        !          2741:     case NC:
        !          2742:        omr = inl(DE4X5_OMR);    /* Set up full duplex for the autonegotiate */
        !          2743:        outl(omr | OMR_FDX, DE4X5_OMR);
        !          2744:        reset_init_sia(dev, 0xef01, 0xffff, 0x0008);/* Initialise the SIA */
        !          2745:        if (lp->media != lp->c_media) {
        !          2746:            de4x5_dbg_media(dev);
        !          2747:            lp->c_media = lp->media;
        !          2748:        }
        !          2749:        lp->media = INIT;
        !          2750:        lp->tx_enable = NO;
        !          2751:        break;
        !          2752:     }
        !          2753:     
        !          2754:     return next_tick;
        !          2755: }
        !          2756: 
        !          2757: /*
        !          2758: ** Some autonegotiation chips are broken in that they do not return the
        !          2759: ** acknowledge bit (anlpa & MII_ANLPA_ACK) in the link partner advertisement
        !          2760: ** register, except at the first power up negotiation.
        !          2761: */
        !          2762: static int
        !          2763: dc21140m_autoconf(struct device *dev)
        !          2764: {
        !          2765:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          2766:     int ana, anlpa, cap, cr, slnk, sr;
        !          2767:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          2768:     u_long imr, omr, iobase = dev->base_addr;
        !          2769: 
        !          2770:     switch(lp->media) {
        !          2771:     case INIT: 
        !          2772:         if (lp->timeout < 0) {
        !          2773:            DISABLE_IRQs;
        !          2774:            lp->tx_enable = FALSE;
        !          2775:            lp->linkOK = 0;
        !          2776:            de4x5_save_skbs(dev);          /* Save non transmitted skb's */
        !          2777:        }
        !          2778:        if ((next_tick = de4x5_reset_phy(dev)) < 0) {
        !          2779:            next_tick &= ~TIMER_CB;
        !          2780:        } else {
        !          2781:            if (lp->useSROM) {
        !          2782:                if (srom_map_media(dev) < 0) {
        !          2783:                    lp->tcount++;
        !          2784:                    return next_tick;
        !          2785:                }
        !          2786:                srom_exec(dev, lp->phy[lp->active].gep);
        !          2787:                if (lp->infoblock_media == ANS) {
        !          2788:                    ana = lp->phy[lp->active].ana | MII_ANA_CSMA;
        !          2789:                    mii_wr(ana, MII_ANA, lp->phy[lp->active].addr, DE4X5_MII);
        !          2790:                }
        !          2791:            } else {
        !          2792:                lp->tmp = MII_SR_ASSC;     /* Fake out the MII speed set */
        !          2793:                SET_10Mb;
        !          2794:                if (lp->autosense == _100Mb) {
        !          2795:                    lp->media = _100Mb;
        !          2796:                } else if (lp->autosense == _10Mb) {
        !          2797:                    lp->media = _10Mb;
        !          2798:                } else if ((lp->autosense == AUTO) && 
        !          2799:                                    ((sr=is_anc_capable(dev)) & MII_SR_ANC)) {
        !          2800:                    ana = (((sr >> 6) & MII_ANA_TAF) | MII_ANA_CSMA);
        !          2801:                    ana &= (lp->fdx ? ~0 : ~MII_ANA_FDAM);
        !          2802:                    mii_wr(ana, MII_ANA, lp->phy[lp->active].addr, DE4X5_MII);
        !          2803:                    lp->media = ANS;
        !          2804:                } else if (lp->autosense == AUTO) {
        !          2805:                    lp->media = SPD_DET;
        !          2806:                } else if (is_spd_100(dev) && is_100_up(dev)) {
        !          2807:                    lp->media = _100Mb;
        !          2808:                } else {
        !          2809:                    lp->media = NC;
        !          2810:                }
        !          2811:            }
        !          2812:            lp->local_state = 0;
        !          2813:            next_tick = dc21140m_autoconf(dev);
        !          2814:        }
        !          2815:        break;
        !          2816:        
        !          2817:     case ANS:
        !          2818:        switch (lp->local_state) {
        !          2819:        case 0:
        !          2820:            if (lp->timeout < 0) {
        !          2821:                mii_wr(MII_CR_ASSE | MII_CR_RAN, MII_CR, lp->phy[lp->active].addr, DE4X5_MII);
        !          2822:            }
        !          2823:            cr = test_mii_reg(dev, MII_CR, MII_CR_RAN, FALSE, 500);
        !          2824:            if (cr < 0) {
        !          2825:                next_tick = cr & ~TIMER_CB;
        !          2826:            } else {
        !          2827:                if (cr) {
        !          2828:                    lp->local_state = 0;
        !          2829:                    lp->media = SPD_DET;
        !          2830:                } else {
        !          2831:                    lp->local_state++;
        !          2832:                }
        !          2833:                next_tick = dc21140m_autoconf(dev);
        !          2834:            }
        !          2835:            break;
        !          2836:            
        !          2837:        case 1:
        !          2838:            if ((sr=test_mii_reg(dev, MII_SR, MII_SR_ASSC, TRUE, 2000)) < 0) {
        !          2839:                next_tick = sr & ~TIMER_CB;
        !          2840:            } else {
        !          2841:                lp->media = SPD_DET;
        !          2842:                lp->local_state = 0;
        !          2843:                if (sr) {                         /* Success! */
        !          2844:                    lp->tmp = MII_SR_ASSC;
        !          2845:                    anlpa = mii_rd(MII_ANLPA, lp->phy[lp->active].addr, DE4X5_MII);
        !          2846:                    ana = mii_rd(MII_ANA, lp->phy[lp->active].addr, DE4X5_MII);
        !          2847:                    if (!(anlpa & MII_ANLPA_RF) && 
        !          2848:                         (cap = anlpa & MII_ANLPA_TAF & ana)) {
        !          2849:                        if (cap & MII_ANA_100M) {
        !          2850:                            lp->fdx = ((ana & anlpa & MII_ANA_FDAM & MII_ANA_100M) ? TRUE : FALSE);
        !          2851:                            lp->media = _100Mb;
        !          2852:                        } else if (cap & MII_ANA_10M) {
        !          2853:                            lp->fdx = ((ana & anlpa & MII_ANA_FDAM & MII_ANA_10M) ? TRUE : FALSE);
        !          2854: 
        !          2855:                            lp->media = _10Mb;
        !          2856:                        }
        !          2857:                    }
        !          2858:                }                       /* Auto Negotiation failed to finish */
        !          2859:                next_tick = dc21140m_autoconf(dev);
        !          2860:            }                           /* Auto Negotiation failed to start */
        !          2861:            break;
        !          2862:        }
        !          2863:        break;
        !          2864:        
        !          2865:     case SPD_DET:                              /* Choose 10Mb/s or 100Mb/s */
        !          2866:         if (lp->timeout < 0) {
        !          2867:            lp->tmp = (lp->phy[lp->active].id ? MII_SR_LKS : 
        !          2868:                                                  (~gep_rd(dev) & GEP_LNP));
        !          2869:            SET_100Mb_PDET;
        !          2870:        }
        !          2871:         if ((slnk = test_for_100Mb(dev, 6500)) < 0) {
        !          2872:            next_tick = slnk & ~TIMER_CB;
        !          2873:        } else {
        !          2874:            if (is_spd_100(dev) && is_100_up(dev)) {
        !          2875:                lp->media = _100Mb;
        !          2876:            } else if ((!is_spd_100(dev) && (is_10_up(dev) & lp->tmp))) {
        !          2877:                lp->media = _10Mb;
        !          2878:            } else {
        !          2879:                lp->media = NC;
        !          2880:            }
        !          2881:            next_tick = dc21140m_autoconf(dev);
        !          2882:        }
        !          2883:        break;
        !          2884:        
        !          2885:     case _100Mb:                               /* Set 100Mb/s */
        !          2886:         next_tick = 3000;
        !          2887:        if (!lp->tx_enable) {
        !          2888:            SET_100Mb;
        !          2889:            de4x5_init_connection(dev);
        !          2890:        } else {
        !          2891:            if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          2892:                if (!is_100_up(dev) || (!lp->useSROM && !is_spd_100(dev))) {
        !          2893:                    lp->media = INIT;
        !          2894:                    lp->tcount++;
        !          2895:                    next_tick = DE4X5_AUTOSENSE_MS;
        !          2896:                }
        !          2897:            }
        !          2898:        }
        !          2899:        break;
        !          2900:        
        !          2901:     case BNC:
        !          2902:     case AUI:
        !          2903:     case _10Mb:                                /* Set 10Mb/s */
        !          2904:         next_tick = 3000;
        !          2905:        if (!lp->tx_enable) {
        !          2906:            SET_10Mb;
        !          2907:            de4x5_init_connection(dev);
        !          2908:        } else {
        !          2909:            if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          2910:                if (!is_10_up(dev) || (!lp->useSROM && is_spd_100(dev))) {
        !          2911:                    lp->media = INIT;
        !          2912:                    lp->tcount++;
        !          2913:                    next_tick = DE4X5_AUTOSENSE_MS;
        !          2914:                }
        !          2915:            }
        !          2916:        }
        !          2917:        break;
        !          2918:        
        !          2919:     case NC:
        !          2920:         if (lp->media != lp->c_media) {
        !          2921:            de4x5_dbg_media(dev);
        !          2922:            lp->c_media = lp->media;
        !          2923:        }
        !          2924:        lp->media = INIT;
        !          2925:        lp->tx_enable = FALSE;
        !          2926:        break;
        !          2927:     }
        !          2928:     
        !          2929:     return next_tick;
        !          2930: }
        !          2931: 
        !          2932: /*
        !          2933: ** This routine may be merged into dc21140m_autoconf() sometime as I'm
        !          2934: ** changing how I figure out the media - but trying to keep it backwards
        !          2935: ** compatible with the de500-xa and de500-aa.
        !          2936: ** Whether it's BNC, AUI, SYM or MII is sorted out in the infoblock
        !          2937: ** functions and set during de4x5_mac_port() and/or de4x5_reset_phy().
        !          2938: ** This routine just has to figure out whether 10Mb/s or 100Mb/s is
        !          2939: ** active.
        !          2940: ** When autonegotiation is working, the ANS part searches the SROM for
        !          2941: ** the highest common speed (TP) link that both can run and if that can
        !          2942: ** be full duplex. That infoblock is executed and then the link speed set.
        !          2943: **
        !          2944: ** Only _10Mb and _100Mb are tested here.
        !          2945: */
        !          2946: static int
        !          2947: dc2114x_autoconf(struct device *dev)
        !          2948: {
        !          2949:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          2950:     u_long iobase = dev->base_addr;
        !          2951:     s32 cr, anlpa, ana, cap, irqs, irq_mask, imr, omr, slnk, sr, sts;
        !          2952:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          2953: 
        !          2954:     switch (lp->media) {
        !          2955:     case INIT:
        !          2956:         if (lp->timeout < 0) {
        !          2957:            DISABLE_IRQs;
        !          2958:            lp->tx_enable = FALSE;
        !          2959:            lp->linkOK = 0;
        !          2960:             lp->timeout = -1;
        !          2961:            de4x5_save_skbs(dev);            /* Save non transmitted skb's */
        !          2962:            if (lp->params.autosense & ~AUTO) {
        !          2963:                srom_map_media(dev);         /* Fixed media requested      */
        !          2964:                if (lp->media != lp->params.autosense) {
        !          2965:                    lp->tcount++;
        !          2966:                    lp->media = INIT;
        !          2967:                    return next_tick;
        !          2968:                }
        !          2969:                lp->media = INIT;
        !          2970:            }
        !          2971:        }
        !          2972:        if ((next_tick = de4x5_reset_phy(dev)) < 0) {
        !          2973:            next_tick &= ~TIMER_CB;
        !          2974:        } else {
        !          2975:            if (lp->autosense == _100Mb) {
        !          2976:                lp->media = _100Mb;
        !          2977:            } else if (lp->autosense == _10Mb) {
        !          2978:                lp->media = _10Mb;
        !          2979:            } else if (lp->autosense == TP) {
        !          2980:                lp->media = TP;
        !          2981:            } else if (lp->autosense == BNC) {
        !          2982:                lp->media = BNC;
        !          2983:            } else if (lp->autosense == AUI) {
        !          2984:                lp->media = AUI;
        !          2985:            } else {
        !          2986:                lp->media = SPD_DET;
        !          2987:                if ((lp->infoblock_media == ANS) && 
        !          2988:                                    ((sr=is_anc_capable(dev)) & MII_SR_ANC)) {
        !          2989:                    ana = (((sr >> 6) & MII_ANA_TAF) | MII_ANA_CSMA);
        !          2990:                    ana &= (lp->fdx ? ~0 : ~MII_ANA_FDAM);
        !          2991:                    mii_wr(ana, MII_ANA, lp->phy[lp->active].addr, DE4X5_MII);
        !          2992:                    lp->media = ANS;
        !          2993:                }
        !          2994:            }
        !          2995:            lp->local_state = 0;
        !          2996:            next_tick = dc2114x_autoconf(dev);
        !          2997:         }
        !          2998:        break;
        !          2999:        
        !          3000:     case ANS:
        !          3001:        switch (lp->local_state) {
        !          3002:        case 0:
        !          3003:            if (lp->timeout < 0) {
        !          3004:                mii_wr(MII_CR_ASSE | MII_CR_RAN, MII_CR, lp->phy[lp->active].addr, DE4X5_MII);
        !          3005:            }
        !          3006:            cr = test_mii_reg(dev, MII_CR, MII_CR_RAN, FALSE, 500);
        !          3007:            if (cr < 0) {
        !          3008:                next_tick = cr & ~TIMER_CB;
        !          3009:            } else {
        !          3010:                if (cr) {
        !          3011:                    lp->local_state = 0;
        !          3012:                    lp->media = SPD_DET;
        !          3013:                } else {
        !          3014:                    lp->local_state++;
        !          3015:                }
        !          3016:                next_tick = dc2114x_autoconf(dev);
        !          3017:            }
        !          3018:            break;
        !          3019:            
        !          3020:        case 1:
        !          3021:            if ((sr=test_mii_reg(dev, MII_SR, MII_SR_ASSC, TRUE, 2000)) < 0) {
        !          3022:                next_tick = sr & ~TIMER_CB;
        !          3023:            } else {
        !          3024:                lp->media = SPD_DET;
        !          3025:                lp->local_state = 0;
        !          3026:                if (sr) {                         /* Success! */
        !          3027:                    lp->tmp = MII_SR_ASSC;
        !          3028:                    anlpa = mii_rd(MII_ANLPA, lp->phy[lp->active].addr, DE4X5_MII);
        !          3029:                    ana = mii_rd(MII_ANA, lp->phy[lp->active].addr, DE4X5_MII);
        !          3030:                    if (!(anlpa & MII_ANLPA_RF) && 
        !          3031:                         (cap = anlpa & MII_ANLPA_TAF & ana)) {
        !          3032:                        if (cap & MII_ANA_100M) {
        !          3033:                            lp->fdx = ((ana & anlpa & MII_ANA_FDAM & MII_ANA_100M) ? TRUE : FALSE);
        !          3034:                            lp->media = _100Mb;
        !          3035:                        } else if (cap & MII_ANA_10M) {
        !          3036:                            lp->fdx = ((ana & anlpa & MII_ANA_FDAM & MII_ANA_10M) ? TRUE : FALSE);
        !          3037:                            lp->media = _10Mb;
        !          3038:                        }
        !          3039:                    }
        !          3040:                }                       /* Auto Negotiation failed to finish */
        !          3041:                next_tick = dc2114x_autoconf(dev);
        !          3042:            }                           /* Auto Negotiation failed to start  */
        !          3043:            break;
        !          3044:        }
        !          3045:        break;
        !          3046:        
        !          3047:     case AUI:
        !          3048:        if (!lp->tx_enable) {
        !          3049:            if (lp->timeout < 0) {
        !          3050:                omr = inl(DE4X5_OMR);   /* Set up half duplex for AUI        */
        !          3051:                outl(omr & ~OMR_FDX, DE4X5_OMR);
        !          3052:            }
        !          3053:            irqs = 0;
        !          3054:            irq_mask = 0;
        !          3055:            sts = test_media(dev,irqs, irq_mask, 0, 0, 0, 1000);
        !          3056:            if (sts < 0) {
        !          3057:                next_tick = sts & ~TIMER_CB;
        !          3058:            } else {
        !          3059:                if (!(inl(DE4X5_SISR) & SISR_SRA) && (lp->autosense == AUTO)) {
        !          3060:                    lp->media = BNC;
        !          3061:                    next_tick = dc2114x_autoconf(dev);
        !          3062:                } else {
        !          3063:                    lp->local_state = 1;
        !          3064:                    de4x5_init_connection(dev);
        !          3065:                }
        !          3066:            }
        !          3067:        } else if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          3068:            lp->media = AUI_SUSPECT;
        !          3069:            next_tick = 3000;
        !          3070:        }
        !          3071:        break;
        !          3072:        
        !          3073:     case AUI_SUSPECT:
        !          3074:        next_tick = de4x5_suspect_state(dev, 1000, AUI, ping_media, dc2114x_autoconf);
        !          3075:        break;
        !          3076:        
        !          3077:     case BNC:
        !          3078:        switch (lp->local_state) {
        !          3079:        case 0:
        !          3080:            if (lp->timeout < 0) {
        !          3081:                omr = inl(DE4X5_OMR);   /* Set up half duplex for BNC        */
        !          3082:                outl(omr & ~OMR_FDX, DE4X5_OMR);
        !          3083:            }
        !          3084:            irqs = 0;
        !          3085:            irq_mask = 0;
        !          3086:            sts = test_media(dev,irqs, irq_mask, 0, 0, 0, 1000);
        !          3087:            if (sts < 0) {
        !          3088:                next_tick = sts & ~TIMER_CB;
        !          3089:            } else {
        !          3090:                lp->local_state++;      /* Ensure media connected            */
        !          3091:                next_tick = dc2114x_autoconf(dev);
        !          3092:            }
        !          3093:            break;
        !          3094:            
        !          3095:        case 1:
        !          3096:            if (!lp->tx_enable) {
        !          3097:                if ((sts = ping_media(dev, 3000)) < 0) {
        !          3098:                    next_tick = sts & ~TIMER_CB;
        !          3099:                } else {
        !          3100:                    if (sts) {
        !          3101:                        lp->local_state = 0;
        !          3102:                        lp->tcount++;
        !          3103:                        lp->media = INIT;
        !          3104:                    } else {
        !          3105:                        de4x5_init_connection(dev);
        !          3106:                    }
        !          3107:                }
        !          3108:            } else if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          3109:                lp->media = BNC_SUSPECT;
        !          3110:                next_tick = 3000;
        !          3111:            }
        !          3112:            break;
        !          3113:        }
        !          3114:        break;
        !          3115:        
        !          3116:     case BNC_SUSPECT:
        !          3117:        next_tick = de4x5_suspect_state(dev, 1000, BNC, ping_media, dc2114x_autoconf);
        !          3118:        break;
        !          3119:        
        !          3120:     case SPD_DET:                       /* Choose 10Mb/s or 100Mb/s          */
        !          3121:          if (srom_map_media(dev) < 0) {
        !          3122:              lp->tcount++;
        !          3123:              lp->media = INIT;
        !          3124:              return next_tick;
        !          3125:          }
        !          3126:          if (lp->media == _100Mb) {
        !          3127:              if ((slnk = test_for_100Mb(dev, 6500)) < 0) {
        !          3128:                  lp->media = SPD_DET;
        !          3129:                  return  (slnk & ~TIMER_CB);
        !          3130:              }
        !          3131:          } else {
        !          3132:              if (wait_for_link(dev) < 0) {
        !          3133:                  lp->media = SPD_DET;
        !          3134:                  return PDET_LINK_WAIT;
        !          3135:              }
        !          3136:          } 
        !          3137:          if (lp->media == ANS) {           /* Do MII parallel detection */
        !          3138:              if (is_spd_100(dev)) {
        !          3139:                  lp->media = _100Mb;
        !          3140:              } else {
        !          3141:                  lp->media = _10Mb;
        !          3142:              }
        !          3143:              next_tick = dc2114x_autoconf(dev);
        !          3144:          } else if (((lp->media == _100Mb) && is_100_up(dev)) ||
        !          3145:                     (((lp->media == _10Mb) || (lp->media == TP) ||
        !          3146:                       (lp->media == BNC)   || (lp->media == AUI)) && 
        !          3147:                      is_10_up(dev))) {
        !          3148:              next_tick = dc2114x_autoconf(dev);
        !          3149:          } else {
        !          3150:              lp->tcount++;
        !          3151:              lp->media = INIT;
        !          3152:          }
        !          3153:          break;
        !          3154:        
        !          3155:     case _10Mb:
        !          3156:         next_tick = 3000;
        !          3157:        if (!lp->tx_enable) {
        !          3158:            SET_10Mb;
        !          3159:            de4x5_init_connection(dev);
        !          3160:        } else {
        !          3161:            if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          3162:                if (!is_10_up(dev) || (!lp->useSROM && is_spd_100(dev))) {
        !          3163:                    lp->media = INIT;
        !          3164:                    lp->tcount++;
        !          3165:                    next_tick = DE4X5_AUTOSENSE_MS;
        !          3166:                }
        !          3167:            }
        !          3168:        }
        !          3169:        break;
        !          3170: 
        !          3171:     case _100Mb:
        !          3172:         next_tick = 3000;
        !          3173:        if (!lp->tx_enable) {
        !          3174:            SET_100Mb;
        !          3175:            de4x5_init_connection(dev);
        !          3176:        } else {
        !          3177:            if (!lp->linkOK && (lp->autosense == AUTO)) {
        !          3178:                if (!is_100_up(dev) || (!lp->useSROM && !is_spd_100(dev))) {
        !          3179:                    lp->media = INIT;
        !          3180:                    lp->tcount++;
        !          3181:                    next_tick = DE4X5_AUTOSENSE_MS;
        !          3182:                }
        !          3183:            }
        !          3184:        }
        !          3185:        break;
        !          3186: 
        !          3187:     default:
        !          3188:        lp->tcount++;
        !          3189: printk("Huh?: media:%02x\n", lp->media);
        !          3190:        lp->media = INIT;
        !          3191:        break;
        !          3192:     }
        !          3193:     
        !          3194:     return next_tick;
        !          3195: }
        !          3196: 
        !          3197: static int
        !          3198: srom_autoconf(struct device *dev)
        !          3199: {
        !          3200:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3201: 
        !          3202:     return lp->infoleaf_fn(dev);
        !          3203: }
        !          3204: 
        !          3205: /*
        !          3206: ** This mapping keeps the original media codes and FDX flag unchanged.
        !          3207: ** While it isn't strictly necessary, it helps me for the moment...
        !          3208: ** The early return avoids a media state / SROM media space clash.
        !          3209: */
        !          3210: static int
        !          3211: srom_map_media(struct device *dev)
        !          3212: {
        !          3213:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3214: 
        !          3215:     lp->fdx = 0;
        !          3216:     if (lp->infoblock_media == lp->media) 
        !          3217:       return 0;
        !          3218: 
        !          3219:     switch(lp->infoblock_media) {
        !          3220:       case SROM_10BASETF:
        !          3221:        if (!lp->params.fdx) return -1;
        !          3222:        lp->fdx = TRUE;
        !          3223:       case SROM_10BASET:
        !          3224:        if (lp->params.fdx && !lp->fdx) return -1;
        !          3225:        if ((lp->chipset == DC21140) || ((lp->chipset & ~0x00ff) == DC2114x)) {
        !          3226:            lp->media = _10Mb;
        !          3227:        } else {
        !          3228:            lp->media = TP;
        !          3229:        }
        !          3230:        break;
        !          3231: 
        !          3232:       case SROM_10BASE2:
        !          3233:        lp->media = BNC;
        !          3234:        break;
        !          3235: 
        !          3236:       case SROM_10BASE5:
        !          3237:        lp->media = AUI;
        !          3238:        break;
        !          3239: 
        !          3240:       case SROM_100BASETF:
        !          3241:         if (!lp->params.fdx) return -1;
        !          3242:        lp->fdx = TRUE;
        !          3243:       case SROM_100BASET:
        !          3244:        if (lp->params.fdx && !lp->fdx) return -1;
        !          3245:        lp->media = _100Mb;
        !          3246:        break;
        !          3247: 
        !          3248:       case SROM_100BASET4:
        !          3249:        lp->media = _100Mb;
        !          3250:        break;
        !          3251: 
        !          3252:       case SROM_100BASEFF:
        !          3253:        if (!lp->params.fdx) return -1;
        !          3254:        lp->fdx = TRUE;
        !          3255:       case SROM_100BASEF: 
        !          3256:        if (lp->params.fdx && !lp->fdx) return -1;
        !          3257:        lp->media = _100Mb;
        !          3258:        break;
        !          3259: 
        !          3260:       case ANS:
        !          3261:        lp->media = ANS;
        !          3262:        break;
        !          3263: 
        !          3264:       default: 
        !          3265:        printk("%s: Bad media code [%d] detected in SROM!\n", dev->name, 
        !          3266:                                                          lp->infoblock_media);
        !          3267:        return -1;
        !          3268:        break;
        !          3269:     }
        !          3270: 
        !          3271:     return 0;
        !          3272: }
        !          3273: 
        !          3274: static void
        !          3275: de4x5_init_connection(struct device *dev)
        !          3276: {
        !          3277:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3278:     u_long iobase = dev->base_addr;
        !          3279: 
        !          3280:     if (lp->media != lp->c_media) {
        !          3281:         de4x5_dbg_media(dev);
        !          3282:        lp->c_media = lp->media;          /* Stop scrolling media messages */
        !          3283:     }
        !          3284: 
        !          3285:     cli();
        !          3286:     de4x5_rst_desc_ring(dev);
        !          3287:     de4x5_setup_intr(dev);
        !          3288:     lp->tx_enable = YES;
        !          3289:     dev->tbusy = 0;
        !          3290:     sti();
        !          3291:     outl(POLL_DEMAND, DE4X5_TPD);
        !          3292:     mark_bh(NET_BH);
        !          3293: 
        !          3294:     return;
        !          3295: }
        !          3296: 
        !          3297: /*
        !          3298: ** General PHY reset function. Some MII devices don't reset correctly
        !          3299: ** since their MII address pins can float at voltages that are dependent
        !          3300: ** on the signal pin use. Do a double reset to ensure a reset.
        !          3301: */
        !          3302: static int
        !          3303: de4x5_reset_phy(struct device *dev)
        !          3304: {
        !          3305:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3306:     u_long iobase = dev->base_addr;
        !          3307:     int next_tick = 0;
        !          3308: 
        !          3309:     if ((lp->useSROM) || (lp->phy[lp->active].id)) {
        !          3310:        if (lp->timeout < 0) {
        !          3311:            if (lp->useSROM) {
        !          3312:                if (lp->phy[lp->active].rst) {
        !          3313:                    srom_exec(dev, lp->phy[lp->active].rst);
        !          3314:                    srom_exec(dev, lp->phy[lp->active].rst);
        !          3315:                } else if (lp->rst) {          /* Type 5 infoblock reset */
        !          3316:                    srom_exec(dev, lp->rst);
        !          3317:                    srom_exec(dev, lp->rst);
        !          3318:                }
        !          3319:            } else {
        !          3320:                PHY_HARD_RESET;
        !          3321:            }
        !          3322:            if (lp->useMII) {
        !          3323:                mii_wr(MII_CR_RST, MII_CR, lp->phy[lp->active].addr, DE4X5_MII);
        !          3324:             }
        !          3325:         }
        !          3326:        if (lp->useMII) {
        !          3327:            next_tick = test_mii_reg(dev, MII_CR, MII_CR_RST, FALSE, 500);
        !          3328:        }
        !          3329:     } else if (lp->chipset == DC21140) {
        !          3330:        PHY_HARD_RESET;
        !          3331:     }
        !          3332: 
        !          3333:     return next_tick;
        !          3334: }
        !          3335: 
        !          3336: static int
        !          3337: test_media(struct device *dev, s32 irqs, s32 irq_mask, s32 csr13, s32 csr14, s32 csr15, s32 msec)
        !          3338: {
        !          3339:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3340:     u_long iobase = dev->base_addr;
        !          3341:     s32 sts, csr12;
        !          3342:     
        !          3343:     if (lp->timeout < 0) {
        !          3344:        lp->timeout = msec/100;
        !          3345:        if (!lp->useSROM) {      /* Already done if by SROM, else dc2104[01] */
        !          3346:            reset_init_sia(dev, csr13, csr14, csr15);
        !          3347:        }
        !          3348: 
        !          3349:        /* set up the interrupt mask */
        !          3350:        outl(irq_mask, DE4X5_IMR);
        !          3351: 
        !          3352:        /* clear all pending interrupts */
        !          3353:        sts = inl(DE4X5_STS);
        !          3354:        outl(sts, DE4X5_STS);
        !          3355:        
        !          3356:        /* clear csr12 NRA and SRA bits */
        !          3357:        if ((lp->chipset == DC21041) || lp->useSROM) {
        !          3358:            csr12 = inl(DE4X5_SISR);
        !          3359:            outl(csr12, DE4X5_SISR);
        !          3360:        }
        !          3361:     }
        !          3362:     
        !          3363:     sts = inl(DE4X5_STS) & ~TIMER_CB;
        !          3364:     
        !          3365:     if (!(sts & irqs) && --lp->timeout) {
        !          3366:        sts = 100 | TIMER_CB;
        !          3367:     } else {
        !          3368:        lp->timeout = -1;
        !          3369:     }
        !          3370:     
        !          3371:     return sts;
        !          3372: }
        !          3373: 
        !          3374: static int
        !          3375: test_tp(struct device *dev, s32 msec)
        !          3376: {
        !          3377:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3378:     u_long iobase = dev->base_addr;
        !          3379:     int sisr;
        !          3380:     
        !          3381:     if (lp->timeout < 0) {
        !          3382:        lp->timeout = msec/100;
        !          3383:     }
        !          3384:     
        !          3385:     sisr = (inl(DE4X5_SISR) & ~TIMER_CB) & (SISR_LKF | SISR_NCR);
        !          3386: 
        !          3387:     if (sisr && --lp->timeout) {
        !          3388:        sisr = 100 | TIMER_CB;
        !          3389:     } else {
        !          3390:        lp->timeout = -1;
        !          3391:     }
        !          3392:     
        !          3393:     return sisr;
        !          3394: }
        !          3395: 
        !          3396: /*
        !          3397: ** Samples the 100Mb Link State Signal. The sample interval is important
        !          3398: ** because too fast a rate can give erroneous results and confuse the
        !          3399: ** speed sense algorithm.
        !          3400: */
        !          3401: #define SAMPLE_INTERVAL 500  /* ms */
        !          3402: #define SAMPLE_DELAY    2000 /* ms */
        !          3403: static int
        !          3404: test_for_100Mb(struct device *dev, int msec)
        !          3405: {
        !          3406:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3407:     int gep = 0, ret = ((lp->chipset & ~0x00ff)==DC2114x? -1 :GEP_SLNK);
        !          3408: 
        !          3409:     if (lp->timeout < 0) {
        !          3410:        if ((msec/SAMPLE_INTERVAL) <= 0) return 0;
        !          3411:        if (msec > SAMPLE_DELAY) {
        !          3412:            lp->timeout = (msec - SAMPLE_DELAY)/SAMPLE_INTERVAL;
        !          3413:            gep = SAMPLE_DELAY | TIMER_CB;
        !          3414:            return gep;
        !          3415:        } else {
        !          3416:            lp->timeout = msec/SAMPLE_INTERVAL;
        !          3417:        }
        !          3418:     }
        !          3419:     
        !          3420:     if (lp->phy[lp->active].id || lp->useSROM) {
        !          3421:        gep = is_100_up(dev) | is_spd_100(dev);
        !          3422:     } else {
        !          3423:        gep = (~gep_rd(dev) & (GEP_SLNK | GEP_LNP));
        !          3424:     }
        !          3425:     if (!(gep & ret) && --lp->timeout) {
        !          3426:        gep = SAMPLE_INTERVAL | TIMER_CB;
        !          3427:     } else {
        !          3428:        lp->timeout = -1;
        !          3429:     }
        !          3430:     
        !          3431:     return gep;
        !          3432: }
        !          3433: 
        !          3434: static int
        !          3435: wait_for_link(struct device *dev)
        !          3436: {
        !          3437:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3438: 
        !          3439:     if (lp->timeout < 0) {
        !          3440:        lp->timeout = 1;
        !          3441:     }
        !          3442:     
        !          3443:     if (lp->timeout--) {
        !          3444:        return TIMER_CB;
        !          3445:     } else {
        !          3446:        lp->timeout = -1;
        !          3447:     }
        !          3448:     
        !          3449:     return 0;
        !          3450: }
        !          3451: 
        !          3452: /*
        !          3453: **
        !          3454: **
        !          3455: */
        !          3456: static int
        !          3457: test_mii_reg(struct device *dev, int reg, int mask, int pol, long msec)
        !          3458: {
        !          3459:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3460:     int test;
        !          3461:     u_long iobase = dev->base_addr;
        !          3462:     
        !          3463:     if (lp->timeout < 0) {
        !          3464:        lp->timeout = msec/100;
        !          3465:     }
        !          3466:     
        !          3467:     if (pol) pol = ~0;
        !          3468:     reg = mii_rd((u_char)reg, lp->phy[lp->active].addr, DE4X5_MII) & mask;
        !          3469:     test = (reg ^ pol) & mask;
        !          3470:     
        !          3471:     if (test && --lp->timeout) {
        !          3472:        reg = 100 | TIMER_CB;
        !          3473:     } else {
        !          3474:        lp->timeout = -1;
        !          3475:     }
        !          3476:     
        !          3477:     return reg;
        !          3478: }
        !          3479: 
        !          3480: static int
        !          3481: is_spd_100(struct device *dev)
        !          3482: {
        !          3483:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3484:     u_long iobase = dev->base_addr;
        !          3485:     int spd;
        !          3486:     
        !          3487:     if (lp->useMII) {
        !          3488:        spd = mii_rd(lp->phy[lp->active].spd.reg, lp->phy[lp->active].addr, DE4X5_MII);
        !          3489:        spd = ~(spd ^ lp->phy[lp->active].spd.value);
        !          3490:        spd &= lp->phy[lp->active].spd.mask;
        !          3491:     } else if (!lp->useSROM) {                      /* de500-xa */
        !          3492:        spd = ((~gep_rd(dev)) & GEP_SLNK);
        !          3493:     } else {
        !          3494:        if ((lp->ibn == 2) || !lp->asBitValid)
        !          3495:            return ((lp->chipset == DC21143)?(~inl(DE4X5_SISR)&SISR_LS100):0);
        !          3496: 
        !          3497:        spd = (lp->asBitValid & (lp->asPolarity ^ (gep_rd(dev) & lp->asBit))) |
        !          3498:                  (lp->linkOK & ~lp->asBitValid);
        !          3499:     }
        !          3500:     
        !          3501:     return spd;
        !          3502: }
        !          3503: 
        !          3504: static int
        !          3505: is_100_up(struct device *dev)
        !          3506: {
        !          3507:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3508:     u_long iobase = dev->base_addr;
        !          3509:     
        !          3510:     if (lp->useMII) {
        !          3511:        /* Double read for sticky bits & temporary drops */
        !          3512:        mii_rd(MII_SR, lp->phy[lp->active].addr, DE4X5_MII);
        !          3513:        return (mii_rd(MII_SR, lp->phy[lp->active].addr, DE4X5_MII) & MII_SR_LKS);
        !          3514:     } else if (!lp->useSROM) {                       /* de500-xa */
        !          3515:        return ((~gep_rd(dev)) & GEP_SLNK);
        !          3516:     } else {
        !          3517:        if ((lp->ibn == 2) || !lp->asBitValid)
        !          3518:            return ((lp->chipset == DC21143)?(~inl(DE4X5_SISR)&SISR_LS100):0);
        !          3519: 
        !          3520:         return ((lp->asBitValid&(lp->asPolarity^(gep_rd(dev)&lp->asBit))) |
        !          3521:                (lp->linkOK & ~lp->asBitValid));
        !          3522:     }
        !          3523: }
        !          3524: 
        !          3525: static int
        !          3526: is_10_up(struct device *dev)
        !          3527: {
        !          3528:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3529:     u_long iobase = dev->base_addr;
        !          3530:     
        !          3531:     if (lp->useMII) {
        !          3532:        /* Double read for sticky bits & temporary drops */
        !          3533:        mii_rd(MII_SR, lp->phy[lp->active].addr, DE4X5_MII);
        !          3534:        return (mii_rd(MII_SR, lp->phy[lp->active].addr, DE4X5_MII) & MII_SR_LKS);
        !          3535:     } else if (!lp->useSROM) {                       /* de500-xa */
        !          3536:        return ((~gep_rd(dev)) & GEP_LNP);
        !          3537:     } else {
        !          3538:        if ((lp->ibn == 2) || !lp->asBitValid)
        !          3539:            return (((lp->chipset & ~0x00ff) == DC2114x) ?
        !          3540:                    (~inl(DE4X5_SISR)&SISR_LS10):
        !          3541:                    0);
        !          3542: 
        !          3543:        return ((lp->asBitValid&(lp->asPolarity^(gep_rd(dev)&lp->asBit))) |
        !          3544:                (lp->linkOK & ~lp->asBitValid));
        !          3545:     }
        !          3546: }
        !          3547: 
        !          3548: static int
        !          3549: is_anc_capable(struct device *dev)
        !          3550: {
        !          3551:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3552:     u_long iobase = dev->base_addr;
        !          3553:     
        !          3554:     if (lp->phy[lp->active].id && (!lp->useSROM || lp->useMII)) {
        !          3555:        return (mii_rd(MII_SR, lp->phy[lp->active].addr, DE4X5_MII));
        !          3556:     } else if ((lp->chipset & ~0x00ff) == DC2114x) {
        !          3557:        return (inl(DE4X5_SISR) & SISR_LPN) >> 12;
        !          3558:     } else {
        !          3559:        return 0;
        !          3560:     }
        !          3561: }
        !          3562: 
        !          3563: /*
        !          3564: ** Send a packet onto the media and watch for send errors that indicate the
        !          3565: ** media is bad or unconnected.
        !          3566: */
        !          3567: static int
        !          3568: ping_media(struct device *dev, int msec)
        !          3569: {
        !          3570:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3571:     u_long iobase = dev->base_addr;
        !          3572:     int sisr;
        !          3573:     
        !          3574:     if (lp->timeout < 0) {
        !          3575:        lp->timeout = msec/100;
        !          3576:        
        !          3577:        lp->tmp = lp->tx_new;                /* Remember the ring position */
        !          3578:        load_packet(dev, lp->frame, TD_LS | TD_FS | sizeof(lp->frame), NULL);
        !          3579:        lp->tx_new = (++lp->tx_new) % lp->txRingSize;
        !          3580:        outl(POLL_DEMAND, DE4X5_TPD);
        !          3581:     }
        !          3582:     
        !          3583:     sisr = inl(DE4X5_SISR);
        !          3584: 
        !          3585:     if ((!(sisr & SISR_NCR)) && 
        !          3586:        ((s32)le32_to_cpu(lp->tx_ring[lp->tmp].status) < 0) && 
        !          3587:         (--lp->timeout)) {
        !          3588:        sisr = 100 | TIMER_CB;
        !          3589:     } else {
        !          3590:        if ((!(sisr & SISR_NCR)) && 
        !          3591:            !(le32_to_cpu(lp->tx_ring[lp->tmp].status) & (T_OWN | TD_ES)) &&
        !          3592:            lp->timeout) {
        !          3593:            sisr = 0;
        !          3594:        } else {
        !          3595:            sisr = 1;
        !          3596:        }
        !          3597:        lp->timeout = -1;
        !          3598:     }
        !          3599:     
        !          3600:     return sisr;
        !          3601: }
        !          3602: 
        !          3603: /*
        !          3604: ** This function does 2 things: on Intels it kmalloc's another buffer to
        !          3605: ** replace the one about to be passed up. On Alpha's it kmallocs a buffer
        !          3606: ** into which the packet is copied.
        !          3607: */
        !          3608: static struct sk_buff *
        !          3609: de4x5_alloc_rx_buff(struct device *dev, int index, int len)
        !          3610: {
        !          3611:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3612:     struct sk_buff *p;
        !          3613: 
        !          3614: #if !defined(__alpha__) && !defined(__powerpc__) && !defined(__sparc_v9__) && !defined(DE4X5_DO_MEMCPY)
        !          3615:     struct sk_buff *ret;
        !          3616:     u_long i=0, tmp;
        !          3617: 
        !          3618:     p = dev_alloc_skb(IEEE802_3_SZ + ALIGN + 2);
        !          3619:     if (!p) return NULL;
        !          3620: 
        !          3621:     p->dev = dev;
        !          3622:     tmp = virt_to_bus(p->data);
        !          3623:     i = ((tmp + ALIGN) & ~ALIGN) - tmp;
        !          3624:     skb_reserve(p, i);
        !          3625:     lp->rx_ring[index].buf = tmp + i;
        !          3626: 
        !          3627:     ret = lp->rx_skb[index];
        !          3628:     lp->rx_skb[index] = p;
        !          3629: 
        !          3630:     if ((u_long) ret > 1) {
        !          3631:        skb_put(ret, len);
        !          3632:     }
        !          3633: 
        !          3634:     return ret;
        !          3635: 
        !          3636: #else
        !          3637:     if (lp->state != OPEN) return (struct sk_buff *)1; /* Fake out the open */
        !          3638: 
        !          3639:     p = dev_alloc_skb(len + 2);
        !          3640:     if (!p) return NULL;
        !          3641: 
        !          3642:     p->dev = dev;
        !          3643:     skb_reserve(p, 2);                                /* Align */
        !          3644:     if (index < lp->rx_old) {                          /* Wrapped buffer */
        !          3645:        short tlen = (lp->rxRingSize - lp->rx_old) * RX_BUFF_SZ;
        !          3646:        memcpy(skb_put(p,tlen), 
        !          3647:               bus_to_virt(le32_to_cpu(lp->rx_ring[lp->rx_old].buf)),tlen);
        !          3648:        memcpy(skb_put(p,len-tlen), 
        !          3649:               bus_to_virt(le32_to_cpu(lp->rx_ring[0].buf)), len-tlen);
        !          3650:     } else {                                           /* Linear buffer */
        !          3651:        memcpy(skb_put(p,len), 
        !          3652:               bus_to_virt(le32_to_cpu(lp->rx_ring[lp->rx_old].buf)),len);
        !          3653:     }
        !          3654:                    
        !          3655:     return p;
        !          3656: #endif
        !          3657: }
        !          3658: 
        !          3659: static void
        !          3660: de4x5_free_rx_buffs(struct device *dev)
        !          3661: {
        !          3662:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3663:     int i;
        !          3664: 
        !          3665:     for (i=0; i<lp->rxRingSize; i++) {
        !          3666:        if ((u_long) lp->rx_skb[i] > 1) {
        !          3667:            dev_kfree_skb(lp->rx_skb[i], FREE_WRITE);
        !          3668:        }
        !          3669:        lp->rx_ring[i].status = 0;
        !          3670:        lp->rx_skb[i] = (struct sk_buff *)1;    /* Dummy entry */
        !          3671:     }
        !          3672: 
        !          3673:     return;
        !          3674: }
        !          3675: 
        !          3676: static void
        !          3677: de4x5_free_tx_buffs(struct device *dev)
        !          3678: {
        !          3679:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3680:     int i;
        !          3681: 
        !          3682:     for (i=0; i<lp->txRingSize; i++) {
        !          3683:        if (lp->tx_skb[i]) {
        !          3684:            dev_kfree_skb(lp->tx_skb[i], FREE_WRITE);
        !          3685:            lp->tx_skb[i] = NULL;
        !          3686:        }
        !          3687:        lp->tx_ring[i].status = 0;
        !          3688:     }
        !          3689: 
        !          3690:     /* Unload the locally queued packets */
        !          3691:     while (lp->cache.skb) {
        !          3692:        dev_kfree_skb(de4x5_get_cache(dev), FREE_WRITE);
        !          3693:     }
        !          3694: 
        !          3695:     return;
        !          3696: }
        !          3697: 
        !          3698: /*
        !          3699: ** When a user pulls a connection, the DECchip can end up in a
        !          3700: ** 'running - waiting for end of transmission' state. This means that we
        !          3701: ** have to perform a chip soft reset to ensure that we can synchronize
        !          3702: ** the hardware and software and make any media probes using a loopback
        !          3703: ** packet meaningful.
        !          3704: */
        !          3705: static void
        !          3706: de4x5_save_skbs(struct device *dev)
        !          3707: {
        !          3708:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3709:     u_long iobase = dev->base_addr;
        !          3710:     s32 omr;
        !          3711: 
        !          3712:     if (!lp->cache.save_cnt) {
        !          3713:        STOP_DE4X5;
        !          3714:        de4x5_tx(dev);                          /* Flush any sent skb's */
        !          3715:        de4x5_free_tx_buffs(dev);
        !          3716:        de4x5_cache_state(dev, DE4X5_SAVE_STATE);
        !          3717:        de4x5_sw_reset(dev);
        !          3718:        de4x5_cache_state(dev, DE4X5_RESTORE_STATE);
        !          3719:        lp->cache.save_cnt++;
        !          3720:        START_DE4X5;
        !          3721:     }
        !          3722: 
        !          3723:     return;
        !          3724: }
        !          3725: 
        !          3726: static void
        !          3727: de4x5_rst_desc_ring(struct device *dev)
        !          3728: {
        !          3729:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3730:     u_long iobase = dev->base_addr;
        !          3731:     int i;
        !          3732:     s32 omr;
        !          3733: 
        !          3734:     if (lp->cache.save_cnt) {
        !          3735:        STOP_DE4X5;
        !          3736:        outl(virt_to_bus(lp->rx_ring), DE4X5_RRBA);
        !          3737:        outl(virt_to_bus(lp->tx_ring), DE4X5_TRBA);
        !          3738:     
        !          3739:        lp->rx_new = lp->rx_old = 0;
        !          3740:        lp->tx_new = lp->tx_old = 0;
        !          3741:     
        !          3742:        for (i = 0; i < lp->rxRingSize; i++) {
        !          3743:            lp->rx_ring[i].status = cpu_to_le32(R_OWN);
        !          3744:        }
        !          3745:     
        !          3746:        for (i = 0; i < lp->txRingSize; i++) {
        !          3747:            lp->tx_ring[i].status = cpu_to_le32(0);
        !          3748:        }
        !          3749:     
        !          3750:        barrier();
        !          3751:        lp->cache.save_cnt--;
        !          3752:        START_DE4X5;
        !          3753:     }
        !          3754:         
        !          3755:     return;
        !          3756: }
        !          3757: 
        !          3758: static void
        !          3759: de4x5_cache_state(struct device *dev, int flag)
        !          3760: {
        !          3761:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3762:     u_long iobase = dev->base_addr;
        !          3763: 
        !          3764:     switch(flag) {
        !          3765:       case DE4X5_SAVE_STATE:
        !          3766:        lp->cache.csr0 = inl(DE4X5_BMR);
        !          3767:        lp->cache.csr6 = (inl(DE4X5_OMR) & ~(OMR_ST | OMR_SR));
        !          3768:        lp->cache.csr7 = inl(DE4X5_IMR);
        !          3769:        break;
        !          3770: 
        !          3771:       case DE4X5_RESTORE_STATE:
        !          3772:        outl(lp->cache.csr0, DE4X5_BMR);
        !          3773:        outl(lp->cache.csr6, DE4X5_OMR);
        !          3774:        outl(lp->cache.csr7, DE4X5_IMR);
        !          3775:        if (lp->chipset == DC21140) {
        !          3776:            gep_wr(lp->cache.gepc, dev);
        !          3777:            gep_wr(lp->cache.gep, dev);
        !          3778:        } else {
        !          3779:            reset_init_sia(dev, lp->cache.csr13, lp->cache.csr14, 
        !          3780:                                                              lp->cache.csr15);
        !          3781:        }
        !          3782:        break;
        !          3783:     }
        !          3784: 
        !          3785:     return;
        !          3786: }
        !          3787: 
        !          3788: static void
        !          3789: de4x5_put_cache(struct device *dev, struct sk_buff *skb)
        !          3790: {
        !          3791:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3792:     struct sk_buff *p;
        !          3793: 
        !          3794:     if (lp->cache.skb) {
        !          3795:        for (p=lp->cache.skb; p->next; p=p->next);
        !          3796:        p->next = skb;
        !          3797:     } else {
        !          3798:        lp->cache.skb = skb;
        !          3799:     }
        !          3800:     skb->next = NULL;
        !          3801: 
        !          3802:     return;
        !          3803: }
        !          3804: 
        !          3805: static void
        !          3806: de4x5_putb_cache(struct device *dev, struct sk_buff *skb)
        !          3807: {
        !          3808:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3809:     struct sk_buff *p = lp->cache.skb;
        !          3810: 
        !          3811:     lp->cache.skb = skb;
        !          3812:     skb->next = p;
        !          3813: 
        !          3814:     return;
        !          3815: }
        !          3816: 
        !          3817: static struct sk_buff *
        !          3818: de4x5_get_cache(struct device *dev)
        !          3819: {
        !          3820:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3821:     struct sk_buff *p = lp->cache.skb;
        !          3822: 
        !          3823:     if (p) {
        !          3824:        lp->cache.skb = p->next;
        !          3825:        p->next = NULL;
        !          3826:     }
        !          3827: 
        !          3828:     return p;
        !          3829: }
        !          3830: 
        !          3831: /*
        !          3832: ** Check the Auto Negotiation State. Return OK when a link pass interrupt
        !          3833: ** is received and the auto-negotiation status is NWAY OK.
        !          3834: */
        !          3835: static int
        !          3836: test_ans(struct device *dev, s32 irqs, s32 irq_mask, s32 msec)
        !          3837: {
        !          3838:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3839:     u_long iobase = dev->base_addr;
        !          3840:     s32 sts, ans;
        !          3841:     
        !          3842:     if (lp->timeout < 0) {
        !          3843:        lp->timeout = msec/100;
        !          3844:        outl(irq_mask, DE4X5_IMR);
        !          3845:        
        !          3846:        /* clear all pending interrupts */
        !          3847:        sts = inl(DE4X5_STS);
        !          3848:        outl(sts, DE4X5_STS);
        !          3849:     }
        !          3850:     
        !          3851:     ans = inl(DE4X5_SISR) & SISR_ANS;
        !          3852:     sts = inl(DE4X5_STS) & ~TIMER_CB;
        !          3853:     
        !          3854:     if (!(sts & irqs) && (ans ^ ANS_NWOK) && --lp->timeout) {
        !          3855:        sts = 100 | TIMER_CB;
        !          3856:     } else {
        !          3857:        lp->timeout = -1;
        !          3858:     }
        !          3859:     
        !          3860:     return sts;
        !          3861: }
        !          3862: 
        !          3863: static void
        !          3864: de4x5_setup_intr(struct device *dev)
        !          3865: {
        !          3866:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3867:     u_long iobase = dev->base_addr;
        !          3868:     s32 imr, sts;
        !          3869:     
        !          3870:     if (inl(DE4X5_OMR) & OMR_SR) {   /* Only unmask if TX/RX is enabled */
        !          3871:        imr = 0;
        !          3872:        UNMASK_IRQs;
        !          3873:        sts = inl(DE4X5_STS);        /* Reset any pending (stale) interrupts */
        !          3874:        outl(sts, DE4X5_STS);
        !          3875:        ENABLE_IRQs;
        !          3876:     }
        !          3877:     
        !          3878:     return;
        !          3879: }
        !          3880: 
        !          3881: /*
        !          3882: **
        !          3883: */
        !          3884: static void
        !          3885: reset_init_sia(struct device *dev, s32 csr13, s32 csr14, s32 csr15)
        !          3886: {
        !          3887:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          3888:     u_long iobase = dev->base_addr;
        !          3889: 
        !          3890:     RESET_SIA;
        !          3891:     if (lp->useSROM) {
        !          3892:        if (lp->ibn == 3) {
        !          3893:            srom_exec(dev, lp->phy[lp->active].rst);
        !          3894:            srom_exec(dev, lp->phy[lp->active].gep);
        !          3895:            outl(1, DE4X5_SICR);
        !          3896:            return;
        !          3897:        } else {
        !          3898:            csr15 = lp->cache.csr15;
        !          3899:            csr14 = lp->cache.csr14;
        !          3900:            csr13 = lp->cache.csr13;
        !          3901:            outl(csr15 | lp->cache.gepc, DE4X5_SIGR);
        !          3902:            outl(csr15 | lp->cache.gep, DE4X5_SIGR);
        !          3903:        }
        !          3904:     } else {
        !          3905:        outl(csr15, DE4X5_SIGR);
        !          3906:     }
        !          3907:     outl(csr14, DE4X5_STRR);
        !          3908:     outl(csr13, DE4X5_SICR);
        !          3909: 
        !          3910:     de4x5_ms_delay(10);
        !          3911: 
        !          3912:     return;
        !          3913: }
        !          3914: 
        !          3915: /*
        !          3916: ** Create a loopback ethernet packet
        !          3917: */
        !          3918: static void
        !          3919: create_packet(struct device *dev, char *frame, int len)
        !          3920: {
        !          3921:     int i;
        !          3922:     char *buf = frame;
        !          3923:     
        !          3924:     for (i=0; i<ETH_ALEN; i++) {             /* Use this source address */
        !          3925:        *buf++ = dev->dev_addr[i];
        !          3926:     }
        !          3927:     for (i=0; i<ETH_ALEN; i++) {             /* Use this destination address */
        !          3928:        *buf++ = dev->dev_addr[i];
        !          3929:     }
        !          3930:     
        !          3931:     *buf++ = 0;                              /* Packet length (2 bytes) */
        !          3932:     *buf++ = 1;
        !          3933:     
        !          3934:     return;
        !          3935: }
        !          3936: 
        !          3937: /*
        !          3938: ** Known delay in microseconds
        !          3939: */
        !          3940: static void
        !          3941: de4x5_us_delay(u32 usec)
        !          3942: {
        !          3943:     udelay(usec);
        !          3944:     
        !          3945:     return;
        !          3946: }
        !          3947: 
        !          3948: /*
        !          3949: ** Known delay in milliseconds, in millisecond steps.
        !          3950: */
        !          3951: static void
        !          3952: de4x5_ms_delay(u32 msec)
        !          3953: {
        !          3954:     u_int i;
        !          3955:     
        !          3956:     for (i=0; i<msec; i++) {
        !          3957:        de4x5_us_delay(1000);
        !          3958:     }
        !          3959:     
        !          3960:     return;
        !          3961: }
        !          3962: 
        !          3963: 
        !          3964: /*
        !          3965: ** Look for a particular board name in the EISA configuration space
        !          3966: */
        !          3967: static int
        !          3968: EISA_signature(char *name, s32 eisa_id)
        !          3969: {
        !          3970:     static c_char *signatures[] = DE4X5_SIGNATURE;
        !          3971:     char ManCode[DE4X5_STRLEN];
        !          3972:     union {
        !          3973:        s32 ID;
        !          3974:        char Id[4];
        !          3975:     } Eisa;
        !          3976:     int i, status = 0, siglen = sizeof(signatures)/sizeof(c_char *);
        !          3977:     
        !          3978:     *name = '\0';
        !          3979:     Eisa.ID = inl(eisa_id);
        !          3980:     
        !          3981:     ManCode[0]=(((Eisa.Id[0]>>2)&0x1f)+0x40);
        !          3982:     ManCode[1]=(((Eisa.Id[1]&0xe0)>>5)+((Eisa.Id[0]&0x03)<<3)+0x40);
        !          3983:     ManCode[2]=(((Eisa.Id[2]>>4)&0x0f)+0x30);
        !          3984:     ManCode[3]=((Eisa.Id[2]&0x0f)+0x30);
        !          3985:     ManCode[4]=(((Eisa.Id[3]>>4)&0x0f)+0x30);
        !          3986:     ManCode[5]='\0';
        !          3987:     
        !          3988:     for (i=0;i<siglen;i++) {
        !          3989:        if (strstr(ManCode, signatures[i]) != NULL) {
        !          3990:            strcpy(name,ManCode);
        !          3991:            status = 1;
        !          3992:            break;
        !          3993:        }
        !          3994:     }
        !          3995:     
        !          3996:     return status;                         /* return the device name string */
        !          3997: }
        !          3998: 
        !          3999: /*
        !          4000: ** Look for a particular board name in the PCI configuration space
        !          4001: */
        !          4002: static int
        !          4003: PCI_signature(char *name, struct bus_type *lp)
        !          4004: {
        !          4005:     static c_char *de4x5_signatures[] = DE4X5_SIGNATURE;
        !          4006:     int i, status = 0, siglen = sizeof(de4x5_signatures)/sizeof(c_char *);
        !          4007:     
        !          4008:     if (lp->chipset == DC21040) {
        !          4009:        strcpy(name, "DE434/5");
        !          4010:        return status;
        !          4011:     } else {                           /* Search for a DEC name in the SROM */
        !          4012:        int i = *((char *)&lp->srom + 19) * 3;
        !          4013:        strncpy(name, (char *)&lp->srom + 26 + i, 8);
        !          4014:     }
        !          4015:     name[8] = '\0';
        !          4016:     for (i=0; i<siglen; i++) {
        !          4017:        if (strstr(name,de4x5_signatures[i])!=NULL) break;
        !          4018:     }
        !          4019:     if (i == siglen) {
        !          4020:        if (dec_only) {
        !          4021:            *name = '\0';
        !          4022:        } else {                        /* Use chip name to avoid confusion */
        !          4023:            strcpy(name, (((lp->chipset == DC21040) ? "DC21040" :
        !          4024:                           ((lp->chipset == DC21041) ? "DC21041" :
        !          4025:                            ((lp->chipset == DC21140) ? "DC21140" :
        !          4026:                             ((lp->chipset == DC21142) ? "DC21142" :
        !          4027:                              ((lp->chipset == DC21143) ? "DC21143" : "UNKNOWN"
        !          4028:                             )))))));
        !          4029:        }
        !          4030:        if (lp->chipset != DC21041) {
        !          4031:            useSROM = TRUE;             /* card is not recognisably DEC */
        !          4032:        }
        !          4033:     } else if ((lp->chipset & ~0x00ff) == DC2114x) {
        !          4034:        useSROM = TRUE;
        !          4035:     }
        !          4036:     
        !          4037:     return status;
        !          4038: }
        !          4039: 
        !          4040: /*
        !          4041: ** Set up the Ethernet PROM counter to the start of the Ethernet address on
        !          4042: ** the DC21040, else  read the SROM for the other chips.
        !          4043: ** The SROM may not be present in a multi-MAC card, so first read the
        !          4044: ** MAC address and check for a bad address. If there is a bad one then exit
        !          4045: ** immediately with the prior srom contents intact (the h/w address will
        !          4046: ** be fixed up later).
        !          4047: */
        !          4048: static void
        !          4049: DevicePresent(u_long aprom_addr)
        !          4050: {
        !          4051:     int i, j=0;
        !          4052:     struct bus_type *lp = &bus;
        !          4053:     
        !          4054:     if (lp->chipset == DC21040) {
        !          4055:        if (lp->bus == EISA) {
        !          4056:            enet_addr_rst(aprom_addr); /* Reset Ethernet Address ROM Pointer */
        !          4057:        } else {
        !          4058:            outl(0, aprom_addr);       /* Reset Ethernet Address ROM Pointer */
        !          4059:        }
        !          4060:     } else {                           /* Read new srom */
        !          4061:        u_short tmp, *p = (short *)((char *)&lp->srom + SROM_HWADD);
        !          4062:        for (i=0; i<(ETH_ALEN>>1); i++) {
        !          4063:            tmp = srom_rd(aprom_addr, (SROM_HWADD>>1) + i);
        !          4064:            *p = le16_to_cpu(tmp);
        !          4065:            j += *p++;
        !          4066:        }
        !          4067:        if ((j == 0) || (j == 0x2fffd)) {
        !          4068:            return;
        !          4069:        }
        !          4070: 
        !          4071:        p=(short *)&lp->srom;
        !          4072:        for (i=0; i<(sizeof(struct de4x5_srom)>>1); i++) {
        !          4073:            tmp = srom_rd(aprom_addr, i);
        !          4074:            *p++ = le16_to_cpu(tmp);
        !          4075:        }
        !          4076:        de4x5_dbg_srom((struct de4x5_srom *)&lp->srom);
        !          4077:     }
        !          4078:     
        !          4079:     return;
        !          4080: }
        !          4081: 
        !          4082: /*
        !          4083: ** Since the write on the Enet PROM register doesn't seem to reset the PROM
        !          4084: ** pointer correctly (at least on my DE425 EISA card), this routine should do
        !          4085: ** it...from depca.c.
        !          4086: */
        !          4087: static void
        !          4088: enet_addr_rst(u_long aprom_addr)
        !          4089: {
        !          4090:     union {
        !          4091:        struct {
        !          4092:            u32 a;
        !          4093:            u32 b;
        !          4094:        } llsig;
        !          4095:        char Sig[sizeof(u32) << 1];
        !          4096:     } dev;
        !          4097:     short sigLength=0;
        !          4098:     s8 data;
        !          4099:     int i, j;
        !          4100:     
        !          4101:     dev.llsig.a = ETH_PROM_SIG;
        !          4102:     dev.llsig.b = ETH_PROM_SIG;
        !          4103:     sigLength = sizeof(u32) << 1;
        !          4104:     
        !          4105:     for (i=0,j=0;j<sigLength && i<PROBE_LENGTH+sigLength-1;i++) {
        !          4106:        data = inb(aprom_addr);
        !          4107:        if (dev.Sig[j] == data) {    /* track signature */
        !          4108:            j++;
        !          4109:        } else {                     /* lost signature; begin search again */
        !          4110:            if (data == dev.Sig[0]) {  /* rare case.... */
        !          4111:                j=1;
        !          4112:            } else {
        !          4113:                j=0;
        !          4114:            }
        !          4115:        }
        !          4116:     }
        !          4117:     
        !          4118:     return;
        !          4119: }
        !          4120: 
        !          4121: /*
        !          4122: ** For the bad status case and no SROM, then add one to the previous
        !          4123: ** address. However, need to add one backwards in case we have 0xff
        !          4124: ** as one or more of the bytes. Only the last 3 bytes should be checked
        !          4125: ** as the first three are invariant - assigned to an organisation.
        !          4126: */
        !          4127: static int
        !          4128: get_hw_addr(struct device *dev)
        !          4129: {
        !          4130:     u_long iobase = dev->base_addr;
        !          4131:     int broken, i, k, tmp, status = 0;
        !          4132:     u_short j,chksum;
        !          4133:     struct bus_type *lp = &bus;
        !          4134: 
        !          4135:     broken = de4x5_bad_srom(lp);
        !          4136: 
        !          4137:     for (i=0,k=0,j=0;j<3;j++) {
        !          4138:        k <<= 1;
        !          4139:        if (k > 0xffff) k-=0xffff;
        !          4140:        
        !          4141:        if (lp->bus == PCI) {
        !          4142:            if (lp->chipset == DC21040) {
        !          4143:                while ((tmp = inl(DE4X5_APROM)) < 0);
        !          4144:                k += (u_char) tmp;
        !          4145:                dev->dev_addr[i++] = (u_char) tmp;
        !          4146:                while ((tmp = inl(DE4X5_APROM)) < 0);
        !          4147:                k += (u_short) (tmp << 8);
        !          4148:                dev->dev_addr[i++] = (u_char) tmp;
        !          4149:            } else if (!broken) {
        !          4150:                dev->dev_addr[i] = (u_char) lp->srom.ieee_addr[i]; i++;
        !          4151:                dev->dev_addr[i] = (u_char) lp->srom.ieee_addr[i]; i++;
        !          4152:            } else if ((broken == SMC) || (broken == ACCTON)) {
        !          4153:                dev->dev_addr[i] = *((u_char *)&lp->srom + i); i++;
        !          4154:                dev->dev_addr[i] = *((u_char *)&lp->srom + i); i++;
        !          4155:            }
        !          4156:        } else {
        !          4157:            k += (u_char) (tmp = inb(EISA_APROM));
        !          4158:            dev->dev_addr[i++] = (u_char) tmp;
        !          4159:            k += (u_short) ((tmp = inb(EISA_APROM)) << 8);
        !          4160:            dev->dev_addr[i++] = (u_char) tmp;
        !          4161:        }
        !          4162:        
        !          4163:        if (k > 0xffff) k-=0xffff;
        !          4164:     }
        !          4165:     if (k == 0xffff) k=0;
        !          4166:     
        !          4167:     if (lp->bus == PCI) {
        !          4168:        if (lp->chipset == DC21040) {
        !          4169:            while ((tmp = inl(DE4X5_APROM)) < 0);
        !          4170:            chksum = (u_char) tmp;
        !          4171:            while ((tmp = inl(DE4X5_APROM)) < 0);
        !          4172:            chksum |= (u_short) (tmp << 8);
        !          4173:            if ((k != chksum) && (dec_only)) status = -1;
        !          4174:        }
        !          4175:     } else {
        !          4176:        chksum = (u_char) inb(EISA_APROM);
        !          4177:        chksum |= (u_short) (inb(EISA_APROM) << 8);
        !          4178:        if ((k != chksum) && (dec_only)) status = -1;
        !          4179:     }
        !          4180: 
        !          4181:     /* If possible, try to fix a broken card - SMC only so far */
        !          4182:     srom_repair(dev, broken);
        !          4183: 
        !          4184: #ifdef CONFIG_PMAC
        !          4185:     /* 
        !          4186:     ** If the address starts with 00 a0, we have to bit-reverse
        !          4187:     ** each byte of the address.
        !          4188:     */
        !          4189:     if (dev->dev_addr[0] == 0 && dev->dev_addr[1] == 0xa0) {
        !          4190:        for (i = 0; i < ETH_ALEN; ++i) {
        !          4191:            int x = dev->dev_addr[i];
        !          4192:            x = ((x & 0xf) << 4) + ((x & 0xf0) >> 4);
        !          4193:            x = ((x & 0x33) << 2) + ((x & 0xcc) >> 2);
        !          4194:            dev->dev_addr[i] = ((x & 0x55) << 1) + ((x & 0xaa) >> 1);
        !          4195:        }
        !          4196:     }
        !          4197: #endif /* CONFIG_PMAC */
        !          4198: 
        !          4199:     /* Test for a bad enet address */
        !          4200:     status = test_bad_enet(dev, status);
        !          4201: 
        !          4202:     return status;
        !          4203: }
        !          4204: 
        !          4205: /*
        !          4206: ** Test for enet addresses in the first 32 bytes. The built-in strncmp
        !          4207: ** didn't seem to work here...?
        !          4208: */
        !          4209: static int
        !          4210: de4x5_bad_srom(struct bus_type *lp)
        !          4211: {
        !          4212:     int i, status = 0;
        !          4213: 
        !          4214:     for (i=0; i<sizeof(enet_det)/ETH_ALEN; i++) {
        !          4215:        if (!de4x5_strncmp((char *)&lp->srom, (char *)&enet_det[i], 3) &&
        !          4216:            !de4x5_strncmp((char *)&lp->srom+0x10, (char *)&enet_det[i], 3)) {
        !          4217:            if (i == 0) {
        !          4218:                status = SMC;
        !          4219:            } else if (i == 1) {
        !          4220:                status = ACCTON;
        !          4221:            }
        !          4222:            break;
        !          4223:        }
        !          4224:     }
        !          4225: 
        !          4226:     return status;
        !          4227: }
        !          4228: 
        !          4229: static int
        !          4230: de4x5_strncmp(char *a, char *b, int n)
        !          4231: {
        !          4232:     int ret=0;
        !          4233: 
        !          4234:     for (;n && !ret;n--) {
        !          4235:        ret = *a++ - *b++;
        !          4236:     }
        !          4237: 
        !          4238:     return ret;
        !          4239: }
        !          4240: 
        !          4241: static void
        !          4242: srom_repair(struct device *dev, int card)
        !          4243: {
        !          4244:     struct bus_type *lp = &bus;
        !          4245: 
        !          4246:     switch(card) {
        !          4247:       case SMC:
        !          4248:        memset((char *)&bus.srom, 0, sizeof(struct de4x5_srom));
        !          4249:        memcpy(lp->srom.ieee_addr, (char *)dev->dev_addr, ETH_ALEN);
        !          4250:        memcpy(lp->srom.info, (char *)&srom_repair_info[SMC-1], 100);
        !          4251:        useSROM = TRUE;
        !          4252:        break;
        !          4253:     }
        !          4254: 
        !          4255:     return;
        !          4256: }
        !          4257: 
        !          4258: /*
        !          4259: ** Assume that the irq's do not follow the PCI spec - this is seems
        !          4260: ** to be true so far (2 for 2).
        !          4261: */
        !          4262: static int
        !          4263: test_bad_enet(struct device *dev, int status)
        !          4264: {
        !          4265:     struct bus_type *lp = &bus;
        !          4266:     int i, tmp;
        !          4267: 
        !          4268:     for (tmp=0,i=0; i<ETH_ALEN; i++) tmp += (u_char)dev->dev_addr[i];
        !          4269:     if ((tmp == 0) || (tmp == 0x5fa)) {
        !          4270:        if ((lp->chipset == last.chipset) && 
        !          4271:            (lp->bus_num == last.bus) && (lp->bus_num > 0)) {
        !          4272:            for (i=0; i<ETH_ALEN; i++) dev->dev_addr[i] = last.addr[i];
        !          4273:            for (i=ETH_ALEN-1; i>2; --i) {
        !          4274:                dev->dev_addr[i] += 1;
        !          4275:                if (dev->dev_addr[i] != 0) break;
        !          4276:            }
        !          4277:            for (i=0; i<ETH_ALEN; i++) last.addr[i] = dev->dev_addr[i];
        !          4278:            if (!an_exception(lp)) {
        !          4279:                dev->irq = last.irq;
        !          4280:            }
        !          4281: 
        !          4282:            status = 0;
        !          4283:        }
        !          4284:     } else if (!status) {
        !          4285:        last.chipset = lp->chipset;
        !          4286:        last.bus = lp->bus_num;
        !          4287:        last.irq = dev->irq;
        !          4288:        for (i=0; i<ETH_ALEN; i++) last.addr[i] = dev->dev_addr[i];
        !          4289:     }
        !          4290: 
        !          4291:     return status;
        !          4292: }
        !          4293: 
        !          4294: /*
        !          4295: ** List of board exceptions with correctly wired IRQs
        !          4296: */
        !          4297: static int
        !          4298: an_exception(struct bus_type *lp)
        !          4299: {
        !          4300:     if ((*(u_short *)lp->srom.sub_vendor_id == 0x00c0) && 
        !          4301:        (*(u_short *)lp->srom.sub_system_id == 0x95e0)) {
        !          4302:        return -1;
        !          4303:     }
        !          4304: 
        !          4305:     return 0;
        !          4306: }
        !          4307: 
        !          4308: /*
        !          4309: ** SROM Read
        !          4310: */
        !          4311: static short
        !          4312: srom_rd(u_long addr, u_char offset)
        !          4313: {
        !          4314:     sendto_srom(SROM_RD | SROM_SR, addr);
        !          4315:     
        !          4316:     srom_latch(SROM_RD | SROM_SR | DT_CS, addr);
        !          4317:     srom_command(SROM_RD | SROM_SR | DT_IN | DT_CS, addr);
        !          4318:     srom_address(SROM_RD | SROM_SR | DT_CS, addr, offset);
        !          4319:     
        !          4320:     return srom_data(SROM_RD | SROM_SR | DT_CS, addr);
        !          4321: }
        !          4322: 
        !          4323: static void
        !          4324: srom_latch(u_int command, u_long addr)
        !          4325: {
        !          4326:     sendto_srom(command, addr);
        !          4327:     sendto_srom(command | DT_CLK, addr);
        !          4328:     sendto_srom(command, addr);
        !          4329:     
        !          4330:     return;
        !          4331: }
        !          4332: 
        !          4333: static void
        !          4334: srom_command(u_int command, u_long addr)
        !          4335: {
        !          4336:     srom_latch(command, addr);
        !          4337:     srom_latch(command, addr);
        !          4338:     srom_latch((command & 0x0000ff00) | DT_CS, addr);
        !          4339:     
        !          4340:     return;
        !          4341: }
        !          4342: 
        !          4343: static void
        !          4344: srom_address(u_int command, u_long addr, u_char offset)
        !          4345: {
        !          4346:     int i;
        !          4347:     char a;
        !          4348:     
        !          4349:     a = (char)(offset << 2);
        !          4350:     for (i=0; i<6; i++, a <<= 1) {
        !          4351:        srom_latch(command | ((a < 0) ? DT_IN : 0), addr);
        !          4352:     }
        !          4353:     de4x5_us_delay(1);
        !          4354:     
        !          4355:     i = (getfrom_srom(addr) >> 3) & 0x01;
        !          4356:     
        !          4357:     return;
        !          4358: }
        !          4359: 
        !          4360: static short
        !          4361: srom_data(u_int command, u_long addr)
        !          4362: {
        !          4363:     int i;
        !          4364:     short word = 0;
        !          4365:     s32 tmp;
        !          4366:     
        !          4367:     for (i=0; i<16; i++) {
        !          4368:        sendto_srom(command  | DT_CLK, addr);
        !          4369:        tmp = getfrom_srom(addr);
        !          4370:        sendto_srom(command, addr);
        !          4371:        
        !          4372:        word = (word << 1) | ((tmp >> 3) & 0x01);
        !          4373:     }
        !          4374:     
        !          4375:     sendto_srom(command & 0x0000ff00, addr);
        !          4376:     
        !          4377:     return word;
        !          4378: }
        !          4379: 
        !          4380: /*
        !          4381: static void
        !          4382: srom_busy(u_int command, u_long addr)
        !          4383: {
        !          4384:    sendto_srom((command & 0x0000ff00) | DT_CS, addr);
        !          4385:    
        !          4386:    while (!((getfrom_srom(addr) >> 3) & 0x01)) {
        !          4387:        de4x5_ms_delay(1);
        !          4388:    }
        !          4389:    
        !          4390:    sendto_srom(command & 0x0000ff00, addr);
        !          4391:    
        !          4392:    return;
        !          4393: }
        !          4394: */
        !          4395: 
        !          4396: static void
        !          4397: sendto_srom(u_int command, u_long addr)
        !          4398: {
        !          4399:     outl(command, addr);
        !          4400:     udelay(1);
        !          4401:     
        !          4402:     return;
        !          4403: }
        !          4404: 
        !          4405: static int
        !          4406: getfrom_srom(u_long addr)
        !          4407: {
        !          4408:     s32 tmp;
        !          4409:     
        !          4410:     tmp = inl(addr);
        !          4411:     udelay(1);
        !          4412:     
        !          4413:     return tmp;
        !          4414: }
        !          4415: 
        !          4416: static int
        !          4417: srom_infoleaf_info(struct device *dev)
        !          4418: {
        !          4419:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4420:     int i, count;
        !          4421:     u_char *p;
        !          4422: 
        !          4423:     /* Find the infoleaf decoder function that matches this chipset */
        !          4424:     for (i=0; i<INFOLEAF_SIZE; i++) {
        !          4425:        if (lp->chipset == infoleaf_array[i].chipset) break;
        !          4426:     }
        !          4427:     if (i == INFOLEAF_SIZE) {
        !          4428:        lp->useSROM = FALSE;
        !          4429:        printk("%s: Cannot find correct chipset for SROM decoding!\n", 
        !          4430:                                                                  dev->name);
        !          4431:        return -ENXIO;
        !          4432:     }
        !          4433: 
        !          4434:     lp->infoleaf_fn = infoleaf_array[i].fn;
        !          4435: 
        !          4436:     /* Find the information offset that this function should use */
        !          4437:     count = *((u_char *)&lp->srom + 19);
        !          4438:     p  = (u_char *)&lp->srom + 26;
        !          4439: 
        !          4440:     if (count > 1) {
        !          4441:        for (i=count; i; --i, p+=3) {
        !          4442:            if (lp->device == *p) break;
        !          4443:        }
        !          4444:        if (i == 0) {
        !          4445:            lp->useSROM = FALSE;
        !          4446:            printk("%s: Cannot find correct PCI device [%d] for SROM decoding!\n", 
        !          4447:                                                       dev->name, lp->device);
        !          4448:            return -ENXIO;
        !          4449:        }
        !          4450:     }
        !          4451: 
        !          4452:     lp->infoleaf_offset = TWIDDLE(p+1);
        !          4453: 
        !          4454:     return 0;
        !          4455: }
        !          4456: 
        !          4457: /*
        !          4458: ** This routine loads any type 1 or 3 MII info into the mii device
        !          4459: ** struct and executes any type 5 code to reset PHY devices for this
        !          4460: ** controller.
        !          4461: ** The info for the MII devices will be valid since the index used
        !          4462: ** will follow the discovery process from MII address 1-31 then 0.
        !          4463: */
        !          4464: static void
        !          4465: srom_init(struct device *dev)
        !          4466: {
        !          4467:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4468:     u_char *p = (u_char *)&lp->srom + lp->infoleaf_offset;
        !          4469:     u_char count;
        !          4470: 
        !          4471:     p+=2;
        !          4472:     if (lp->chipset == DC21140) {
        !          4473:        lp->cache.gepc = (*p++ | GEP_CTRL);
        !          4474:        gep_wr(lp->cache.gepc, dev);
        !          4475:     }
        !          4476: 
        !          4477:     /* Block count */
        !          4478:     count = *p++;
        !          4479: 
        !          4480:     /* Jump the infoblocks to find types */
        !          4481:     for (;count; --count) {
        !          4482:        if (*p < 128) {
        !          4483:            p += COMPACT_LEN;
        !          4484:        } else if (*(p+1) == 5) {
        !          4485:            type5_infoblock(dev, 1, p);
        !          4486:            p += ((*p & BLOCK_LEN) + 1);
        !          4487:        } else if (*(p+1) == 4) {
        !          4488:            p += ((*p & BLOCK_LEN) + 1);
        !          4489:        } else if (*(p+1) == 3) {
        !          4490:            type3_infoblock(dev, 1, p);
        !          4491:            p += ((*p & BLOCK_LEN) + 1);
        !          4492:        } else if (*(p+1) == 2) {
        !          4493:            p += ((*p & BLOCK_LEN) + 1);
        !          4494:        } else if (*(p+1) == 1) {
        !          4495:            type1_infoblock(dev, 1, p);
        !          4496:            p += ((*p & BLOCK_LEN) + 1);
        !          4497:        } else {
        !          4498:            p += ((*p & BLOCK_LEN) + 1);
        !          4499:        }
        !          4500:     }
        !          4501: 
        !          4502:     return;
        !          4503: }
        !          4504: 
        !          4505: /*
        !          4506: ** A generic routine that writes GEP control, data and reset information
        !          4507: ** to the GEP register (21140) or csr15 GEP portion (2114[23]).
        !          4508: */
        !          4509: static void
        !          4510: srom_exec(struct device *dev, u_char *p)
        !          4511: {
        !          4512:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4513:     u_long iobase = dev->base_addr;
        !          4514:     u_char count = (p ? *p++ : 0);
        !          4515:     u_short *w = (u_short *)p;
        !          4516: 
        !          4517:     if (((lp->ibn != 1) && (lp->ibn != 3) && (lp->ibn != 5)) || !count) return;
        !          4518: 
        !          4519:     if (lp->chipset != DC21140) RESET_SIA;
        !          4520:  
        !          4521:     while (count--) {
        !          4522:        gep_wr(((lp->chipset==DC21140) && (lp->ibn!=5) ? 
        !          4523:                                                   *p++ : TWIDDLE(w++)), dev);
        !          4524:        udelay(2000);                       /* 2ms per action */
        !          4525:     }
        !          4526: 
        !          4527:     if (lp->chipset != DC21140) {
        !          4528:        outl(lp->cache.csr14, DE4X5_STRR);
        !          4529:        outl(lp->cache.csr13, DE4X5_SICR);
        !          4530:     }
        !          4531: 
        !          4532:     return;
        !          4533: }
        !          4534: 
        !          4535: /*
        !          4536: ** Basically this function is a NOP since it will never be called,
        !          4537: ** unless I implement the DC21041 SROM functions. There's no need
        !          4538: ** since the existing code will be satisfactory for all boards.
        !          4539: */
        !          4540: static int 
        !          4541: dc21041_infoleaf(struct device *dev)
        !          4542: {
        !          4543:     return DE4X5_AUTOSENSE_MS;
        !          4544: }
        !          4545: 
        !          4546: static int 
        !          4547: dc21140_infoleaf(struct device *dev)
        !          4548: {
        !          4549:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4550:     u_char count = 0;
        !          4551:     u_char *p = (u_char *)&lp->srom + lp->infoleaf_offset;
        !          4552:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          4553: 
        !          4554:     /* Read the connection type */
        !          4555:     p+=2;
        !          4556: 
        !          4557:     /* GEP control */
        !          4558:     lp->cache.gepc = (*p++ | GEP_CTRL);
        !          4559: 
        !          4560:     /* Block count */
        !          4561:     count = *p++;
        !          4562: 
        !          4563:     /* Recursively figure out the info blocks */
        !          4564:     if (*p < 128) {
        !          4565:        next_tick = dc_infoblock[COMPACT](dev, count, p);
        !          4566:     } else {
        !          4567:        next_tick = dc_infoblock[*(p+1)](dev, count, p);
        !          4568:     }
        !          4569: 
        !          4570:     if (lp->tcount == count) {
        !          4571:        lp->media = NC;
        !          4572:         if (lp->media != lp->c_media) {
        !          4573:            de4x5_dbg_media(dev);
        !          4574:            lp->c_media = lp->media;
        !          4575:        }
        !          4576:        lp->media = INIT;
        !          4577:        lp->tcount = 0;
        !          4578:        lp->tx_enable = FALSE;
        !          4579:     }
        !          4580: 
        !          4581:     return next_tick & ~TIMER_CB;
        !          4582: }
        !          4583: 
        !          4584: static int 
        !          4585: dc21142_infoleaf(struct device *dev)
        !          4586: {
        !          4587:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4588:     u_char count = 0;
        !          4589:     u_char *p = (u_char *)&lp->srom + lp->infoleaf_offset;
        !          4590:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          4591: 
        !          4592:     /* Read the connection type */
        !          4593:     p+=2;
        !          4594: 
        !          4595:     /* Block count */
        !          4596:     count = *p++;
        !          4597: 
        !          4598:     /* Recursively figure out the info blocks */
        !          4599:     if (*p < 128) {
        !          4600:        next_tick = dc_infoblock[COMPACT](dev, count, p);
        !          4601:     } else {
        !          4602:        next_tick = dc_infoblock[*(p+1)](dev, count, p);
        !          4603:     }
        !          4604: 
        !          4605:     if (lp->tcount == count) {
        !          4606:        lp->media = NC;
        !          4607:         if (lp->media != lp->c_media) {
        !          4608:            de4x5_dbg_media(dev);
        !          4609:            lp->c_media = lp->media;
        !          4610:        }
        !          4611:        lp->media = INIT;
        !          4612:        lp->tcount = 0;
        !          4613:        lp->tx_enable = FALSE;
        !          4614:     }
        !          4615: 
        !          4616:     return next_tick & ~TIMER_CB;
        !          4617: }
        !          4618: 
        !          4619: static int 
        !          4620: dc21143_infoleaf(struct device *dev)
        !          4621: {
        !          4622:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4623:     u_char count = 0;
        !          4624:     u_char *p = (u_char *)&lp->srom + lp->infoleaf_offset;
        !          4625:     int next_tick = DE4X5_AUTOSENSE_MS;
        !          4626: 
        !          4627:     /* Read the connection type */
        !          4628:     p+=2;
        !          4629: 
        !          4630:     /* Block count */
        !          4631:     count = *p++;
        !          4632: 
        !          4633:     /* Recursively figure out the info blocks */
        !          4634:     if (*p < 128) {
        !          4635:        next_tick = dc_infoblock[COMPACT](dev, count, p);
        !          4636:     } else {
        !          4637:        next_tick = dc_infoblock[*(p+1)](dev, count, p);
        !          4638:     }
        !          4639:     if (lp->tcount == count) {
        !          4640:        lp->media = NC;
        !          4641:         if (lp->media != lp->c_media) {
        !          4642:            de4x5_dbg_media(dev);
        !          4643:            lp->c_media = lp->media;
        !          4644:        }
        !          4645:        lp->media = INIT;
        !          4646:        lp->tcount = 0;
        !          4647:        lp->tx_enable = FALSE;
        !          4648:     }
        !          4649: 
        !          4650:     return next_tick & ~TIMER_CB;
        !          4651: }
        !          4652: 
        !          4653: /*
        !          4654: ** The compact infoblock is only designed for DC21140[A] chips, so
        !          4655: ** we'll reuse the dc21140m_autoconf function. Non MII media only.
        !          4656: */
        !          4657: static int 
        !          4658: compact_infoblock(struct device *dev, u_char count, u_char *p)
        !          4659: {
        !          4660:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4661:     u_char flags, csr6;
        !          4662: 
        !          4663:     /* Recursively figure out the info blocks */
        !          4664:     if (--count > lp->tcount) {
        !          4665:        if (*(p+COMPACT_LEN) < 128) {
        !          4666:            return dc_infoblock[COMPACT](dev, count, p+COMPACT_LEN);
        !          4667:        } else {
        !          4668:            return dc_infoblock[*(p+COMPACT_LEN+1)](dev, count, p+COMPACT_LEN);
        !          4669:        }
        !          4670:     }
        !          4671: 
        !          4672:     if ((lp->media == INIT) && (lp->timeout < 0)) {
        !          4673:         lp->ibn = COMPACT;
        !          4674:         lp->active = 0;
        !          4675:        gep_wr(lp->cache.gepc, dev);
        !          4676:        lp->infoblock_media = (*p++) & COMPACT_MC;
        !          4677:        lp->cache.gep = *p++;
        !          4678:        csr6 = *p++;
        !          4679:        flags = *p++;
        !          4680: 
        !          4681:        lp->asBitValid = (flags & 0x80) ? 0 : -1;
        !          4682:        lp->defMedium = (flags & 0x40) ? -1 : 0;
        !          4683:        lp->asBit = 1 << ((csr6 >> 1) & 0x07);
        !          4684:        lp->asPolarity = ((csr6 & 0x80) ? -1 : 0) & lp->asBit;
        !          4685:        lp->infoblock_csr6 = OMR_DEF | ((csr6 & 0x71) << 18);
        !          4686:        lp->useMII = FALSE;
        !          4687: 
        !          4688:        de4x5_switch_mac_port(dev);
        !          4689:     }
        !          4690: 
        !          4691:     return dc21140m_autoconf(dev);
        !          4692: }
        !          4693: 
        !          4694: /*
        !          4695: ** This block describes non MII media for the DC21140[A] only.
        !          4696: */
        !          4697: static int 
        !          4698: type0_infoblock(struct device *dev, u_char count, u_char *p)
        !          4699: {
        !          4700:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4701:     u_char flags, csr6, len = (*p & BLOCK_LEN)+1;
        !          4702: 
        !          4703:     /* Recursively figure out the info blocks */
        !          4704:     if (--count > lp->tcount) {
        !          4705:        if (*(p+len) < 128) {
        !          4706:            return dc_infoblock[COMPACT](dev, count, p+len);
        !          4707:        } else {
        !          4708:            return dc_infoblock[*(p+len+1)](dev, count, p+len);
        !          4709:        }
        !          4710:     }
        !          4711: 
        !          4712:     if ((lp->media == INIT) && (lp->timeout < 0)) {
        !          4713:         lp->ibn = 0;
        !          4714:         lp->active = 0;
        !          4715:         gep_wr(lp->cache.gepc, dev);
        !          4716:        p+=2;
        !          4717:        lp->infoblock_media = (*p++) & BLOCK0_MC;
        !          4718:        lp->cache.gep = *p++;
        !          4719:        csr6 = *p++;
        !          4720:        flags = *p++;
        !          4721: 
        !          4722:        lp->asBitValid = (flags & 0x80) ? 0 : -1;
        !          4723:        lp->defMedium = (flags & 0x40) ? -1 : 0;
        !          4724:        lp->asBit = 1 << ((csr6 >> 1) & 0x07);
        !          4725:        lp->asPolarity = ((csr6 & 0x80) ? -1 : 0) & lp->asBit;
        !          4726:        lp->infoblock_csr6 = OMR_DEF | ((csr6 & 0x71) << 18);
        !          4727:        lp->useMII = FALSE;
        !          4728: 
        !          4729:        de4x5_switch_mac_port(dev);
        !          4730:     }
        !          4731: 
        !          4732:     return dc21140m_autoconf(dev);
        !          4733: }
        !          4734: 
        !          4735: /* These functions are under construction! */
        !          4736: 
        !          4737: static int 
        !          4738: type1_infoblock(struct device *dev, u_char count, u_char *p)
        !          4739: {
        !          4740:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4741:     u_char len = (*p & BLOCK_LEN)+1;
        !          4742: 
        !          4743:     /* Recursively figure out the info blocks */
        !          4744:     if (--count > lp->tcount) {
        !          4745:        if (*(p+len) < 128) {
        !          4746:            return dc_infoblock[COMPACT](dev, count, p+len);
        !          4747:        } else {
        !          4748:            return dc_infoblock[*(p+len+1)](dev, count, p+len);
        !          4749:        }
        !          4750:     }
        !          4751: 
        !          4752:     p += 2;
        !          4753:     if (lp->state == INITIALISED) {
        !          4754:         lp->ibn = 1;
        !          4755:        lp->active = *p++;
        !          4756:        lp->phy[lp->active].gep = (*p ? p : 0); p += (*p + 1);
        !          4757:        lp->phy[lp->active].rst = (*p ? p : 0); p += (*p + 1);
        !          4758:        lp->phy[lp->active].mc  = TWIDDLE(p); p += 2;
        !          4759:        lp->phy[lp->active].ana = TWIDDLE(p); p += 2;
        !          4760:        lp->phy[lp->active].fdx = TWIDDLE(p); p += 2;
        !          4761:        lp->phy[lp->active].ttm = TWIDDLE(p);
        !          4762:        return 0;
        !          4763:     } else if ((lp->media == INIT) && (lp->timeout < 0)) {
        !          4764:         lp->ibn = 1;
        !          4765:         lp->active = *p;
        !          4766:        lp->infoblock_csr6 = OMR_MII_100;
        !          4767:        lp->useMII = TRUE;
        !          4768:        lp->infoblock_media = ANS;
        !          4769: 
        !          4770:        de4x5_switch_mac_port(dev);
        !          4771:     }
        !          4772: 
        !          4773:     return dc21140m_autoconf(dev);
        !          4774: }
        !          4775: 
        !          4776: static int 
        !          4777: type2_infoblock(struct device *dev, u_char count, u_char *p)
        !          4778: {
        !          4779:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4780:     u_char len = (*p & BLOCK_LEN)+1;
        !          4781: 
        !          4782:     /* Recursively figure out the info blocks */
        !          4783:     if (--count > lp->tcount) {
        !          4784:        if (*(p+len) < 128) {
        !          4785:            return dc_infoblock[COMPACT](dev, count, p+len);
        !          4786:        } else {
        !          4787:            return dc_infoblock[*(p+len+1)](dev, count, p+len);
        !          4788:        }
        !          4789:     }
        !          4790: 
        !          4791:     if ((lp->media == INIT) && (lp->timeout < 0)) {
        !          4792:         lp->ibn = 2;
        !          4793:         lp->active = 0;
        !          4794:        p += 2;
        !          4795:        lp->infoblock_media = (*p) & MEDIA_CODE;
        !          4796: 
        !          4797:         if ((*p++) & EXT_FIELD) {
        !          4798:            lp->cache.csr13 = TWIDDLE(p); p += 2;
        !          4799:            lp->cache.csr14 = TWIDDLE(p); p += 2;
        !          4800:            lp->cache.csr15 = TWIDDLE(p); p += 2;
        !          4801:        } else {
        !          4802:            lp->cache.csr13 = CSR13;
        !          4803:            lp->cache.csr14 = CSR14;
        !          4804:            lp->cache.csr15 = CSR15;
        !          4805:        }
        !          4806:         lp->cache.gepc = ((s32)(TWIDDLE(p)) << 16); p += 2;
        !          4807:         lp->cache.gep  = ((s32)(TWIDDLE(p)) << 16);
        !          4808:        lp->infoblock_csr6 = OMR_SIA;
        !          4809:        lp->useMII = FALSE;
        !          4810: 
        !          4811:        de4x5_switch_mac_port(dev);
        !          4812:     }
        !          4813: 
        !          4814:     return dc2114x_autoconf(dev);
        !          4815: }
        !          4816: 
        !          4817: static int 
        !          4818: type3_infoblock(struct device *dev, u_char count, u_char *p)
        !          4819: {
        !          4820:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4821:     u_char len = (*p & BLOCK_LEN)+1;
        !          4822: 
        !          4823:     /* Recursively figure out the info blocks */
        !          4824:     if (--count > lp->tcount) {
        !          4825:        if (*(p+len) < 128) {
        !          4826:            return dc_infoblock[COMPACT](dev, count, p+len);
        !          4827:        } else {
        !          4828:            return dc_infoblock[*(p+len+1)](dev, count, p+len);
        !          4829:        }
        !          4830:     }
        !          4831: 
        !          4832:     p += 2;
        !          4833:     if (lp->state == INITIALISED) {
        !          4834:         lp->ibn = 3;
        !          4835:         lp->active = *p++;
        !          4836:        lp->phy[lp->active].gep = (*p ? p : 0); p += (2 * (*p) + 1);
        !          4837:        lp->phy[lp->active].rst = (*p ? p : 0); p += (2 * (*p) + 1);
        !          4838:        lp->phy[lp->active].mc  = TWIDDLE(p); p += 2;
        !          4839:        lp->phy[lp->active].ana = TWIDDLE(p); p += 2;
        !          4840:        lp->phy[lp->active].fdx = TWIDDLE(p); p += 2;
        !          4841:        lp->phy[lp->active].ttm = TWIDDLE(p); p += 2;
        !          4842:        lp->phy[lp->active].mci = *p;
        !          4843:        return 0;
        !          4844:     } else if ((lp->media == INIT) && (lp->timeout < 0)) {
        !          4845:         lp->ibn = 3;
        !          4846:        lp->active = *p;
        !          4847:        lp->infoblock_csr6 = OMR_MII_100;
        !          4848:        lp->useMII = TRUE;
        !          4849:        lp->infoblock_media = ANS;
        !          4850: 
        !          4851:        de4x5_switch_mac_port(dev);
        !          4852:     }
        !          4853: 
        !          4854:     return dc2114x_autoconf(dev);
        !          4855: }
        !          4856: 
        !          4857: static int 
        !          4858: type4_infoblock(struct device *dev, u_char count, u_char *p)
        !          4859: {
        !          4860:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4861:     u_char flags, csr6, len = (*p & BLOCK_LEN)+1;
        !          4862: 
        !          4863:     /* Recursively figure out the info blocks */
        !          4864:     if (--count > lp->tcount) {
        !          4865:        if (*(p+len) < 128) {
        !          4866:            return dc_infoblock[COMPACT](dev, count, p+len);
        !          4867:        } else {
        !          4868:            return dc_infoblock[*(p+len+1)](dev, count, p+len);
        !          4869:        }
        !          4870:     }
        !          4871: 
        !          4872:     if ((lp->media == INIT) && (lp->timeout < 0)) {
        !          4873:         lp->ibn = 4;
        !          4874:         lp->active = 0;
        !          4875:        p+=2;
        !          4876:        lp->infoblock_media = (*p++) & MEDIA_CODE;
        !          4877:         lp->cache.csr13 = CSR13;              /* Hard coded defaults */
        !          4878:        lp->cache.csr14 = CSR14;
        !          4879:        lp->cache.csr15 = CSR15;
        !          4880:         lp->cache.gepc = ((s32)(TWIDDLE(p)) << 16); p += 2;
        !          4881:         lp->cache.gep  = ((s32)(TWIDDLE(p)) << 16); p += 2;
        !          4882:        csr6 = *p++;
        !          4883:        flags = *p++;
        !          4884: 
        !          4885:        lp->asBitValid = (flags & 0x80) ? 0 : -1;
        !          4886:        lp->defMedium = (flags & 0x40) ? -1 : 0;
        !          4887:        lp->asBit = 1 << ((csr6 >> 1) & 0x07);
        !          4888:        lp->asPolarity = ((csr6 & 0x80) ? -1 : 0) & lp->asBit;
        !          4889:        lp->infoblock_csr6 = OMR_DEF | ((csr6 & 0x71) << 18);
        !          4890:        lp->useMII = FALSE;
        !          4891: 
        !          4892:        de4x5_switch_mac_port(dev);
        !          4893:     }
        !          4894: 
        !          4895:     return dc2114x_autoconf(dev);
        !          4896: }
        !          4897: 
        !          4898: /*
        !          4899: ** This block type provides information for resetting external devices
        !          4900: ** (chips) through the General Purpose Register.
        !          4901: */
        !          4902: static int 
        !          4903: type5_infoblock(struct device *dev, u_char count, u_char *p)
        !          4904: {
        !          4905:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          4906:     u_char len = (*p & BLOCK_LEN)+1;
        !          4907: 
        !          4908:     /* Recursively figure out the info blocks */
        !          4909:     if (--count > lp->tcount) {
        !          4910:        if (*(p+len) < 128) {
        !          4911:            return dc_infoblock[COMPACT](dev, count, p+len);
        !          4912:        } else {
        !          4913:            return dc_infoblock[*(p+len+1)](dev, count, p+len);
        !          4914:        }
        !          4915:     }
        !          4916: 
        !          4917:     /* Must be initializing to run this code */
        !          4918:     if ((lp->state == INITIALISED) || (lp->media == INIT)) {
        !          4919:        p+=2;
        !          4920:         lp->rst = p;
        !          4921:         srom_exec(dev, lp->rst);
        !          4922:     }
        !          4923: 
        !          4924:     return DE4X5_AUTOSENSE_MS;
        !          4925: }
        !          4926: 
        !          4927: /*
        !          4928: ** MII Read/Write
        !          4929: */
        !          4930: 
        !          4931: static int
        !          4932: mii_rd(u_char phyreg, u_char phyaddr, u_long ioaddr)
        !          4933: {
        !          4934:     mii_wdata(MII_PREAMBLE,  2, ioaddr);   /* Start of 34 bit preamble...    */
        !          4935:     mii_wdata(MII_PREAMBLE, 32, ioaddr);   /* ...continued                   */
        !          4936:     mii_wdata(MII_STRD, 4, ioaddr);        /* SFD and Read operation         */
        !          4937:     mii_address(phyaddr, ioaddr);          /* PHY address to be accessed     */
        !          4938:     mii_address(phyreg, ioaddr);           /* PHY Register to read           */
        !          4939:     mii_ta(MII_STRD, ioaddr);              /* Turn around time - 2 MDC       */
        !          4940:     
        !          4941:     return mii_rdata(ioaddr);              /* Read data                      */
        !          4942: }
        !          4943: 
        !          4944: static void
        !          4945: mii_wr(int data, u_char phyreg, u_char phyaddr, u_long ioaddr)
        !          4946: {
        !          4947:     mii_wdata(MII_PREAMBLE,  2, ioaddr);   /* Start of 34 bit preamble...    */
        !          4948:     mii_wdata(MII_PREAMBLE, 32, ioaddr);   /* ...continued                   */
        !          4949:     mii_wdata(MII_STWR, 4, ioaddr);        /* SFD and Write operation        */
        !          4950:     mii_address(phyaddr, ioaddr);          /* PHY address to be accessed     */
        !          4951:     mii_address(phyreg, ioaddr);           /* PHY Register to write          */
        !          4952:     mii_ta(MII_STWR, ioaddr);              /* Turn around time - 2 MDC       */
        !          4953:     data = mii_swap(data, 16);             /* Swap data bit ordering         */
        !          4954:     mii_wdata(data, 16, ioaddr);           /* Write data                     */
        !          4955:     
        !          4956:     return;
        !          4957: }
        !          4958: 
        !          4959: static int
        !          4960: mii_rdata(u_long ioaddr)
        !          4961: {
        !          4962:     int i;
        !          4963:     s32 tmp = 0;
        !          4964:     
        !          4965:     for (i=0; i<16; i++) {
        !          4966:        tmp <<= 1;
        !          4967:        tmp |= getfrom_mii(MII_MRD | MII_RD, ioaddr);
        !          4968:     }
        !          4969:     
        !          4970:     return tmp;
        !          4971: }
        !          4972: 
        !          4973: static void
        !          4974: mii_wdata(int data, int len, u_long ioaddr)
        !          4975: {
        !          4976:     int i;
        !          4977:     
        !          4978:     for (i=0; i<len; i++) {
        !          4979:        sendto_mii(MII_MWR | MII_WR, data, ioaddr);
        !          4980:        data >>= 1;
        !          4981:     }
        !          4982:     
        !          4983:     return;
        !          4984: }
        !          4985: 
        !          4986: static void
        !          4987: mii_address(u_char addr, u_long ioaddr)
        !          4988: {
        !          4989:     int i;
        !          4990:     
        !          4991:     addr = mii_swap(addr, 5);
        !          4992:     for (i=0; i<5; i++) {
        !          4993:        sendto_mii(MII_MWR | MII_WR, addr, ioaddr);
        !          4994:        addr >>= 1;
        !          4995:     }
        !          4996:     
        !          4997:     return;
        !          4998: }
        !          4999: 
        !          5000: static void
        !          5001: mii_ta(u_long rw, u_long ioaddr)
        !          5002: {
        !          5003:     if (rw == MII_STWR) {
        !          5004:        sendto_mii(MII_MWR | MII_WR, 1, ioaddr);  
        !          5005:        sendto_mii(MII_MWR | MII_WR, 0, ioaddr);  
        !          5006:     } else {
        !          5007:        getfrom_mii(MII_MRD | MII_RD, ioaddr);        /* Tri-state MDIO */
        !          5008:     }
        !          5009:     
        !          5010:     return;
        !          5011: }
        !          5012: 
        !          5013: static int
        !          5014: mii_swap(int data, int len)
        !          5015: {
        !          5016:     int i, tmp = 0;
        !          5017:     
        !          5018:     for (i=0; i<len; i++) {
        !          5019:        tmp <<= 1;
        !          5020:        tmp |= (data & 1);
        !          5021:        data >>= 1;
        !          5022:     }
        !          5023:     
        !          5024:     return tmp;
        !          5025: }
        !          5026: 
        !          5027: static void
        !          5028: sendto_mii(u32 command, int data, u_long ioaddr)
        !          5029: {
        !          5030:     u32 j;
        !          5031:     
        !          5032:     j = (data & 1) << 17;
        !          5033:     outl(command | j, ioaddr);
        !          5034:     udelay(1);
        !          5035:     outl(command | MII_MDC | j, ioaddr);
        !          5036:     udelay(1);
        !          5037:     
        !          5038:     return;
        !          5039: }
        !          5040: 
        !          5041: static int
        !          5042: getfrom_mii(u32 command, u_long ioaddr)
        !          5043: {
        !          5044:     outl(command, ioaddr);
        !          5045:     udelay(1);
        !          5046:     outl(command | MII_MDC, ioaddr);
        !          5047:     udelay(1);
        !          5048:     
        !          5049:     return ((inl(ioaddr) >> 19) & 1);
        !          5050: }
        !          5051: 
        !          5052: /*
        !          5053: ** Here's 3 ways to calculate the OUI from the ID registers.
        !          5054: */
        !          5055: static int
        !          5056: mii_get_oui(u_char phyaddr, u_long ioaddr)
        !          5057: {
        !          5058: /*
        !          5059:     union {
        !          5060:        u_short reg;
        !          5061:        u_char breg[2];
        !          5062:     } a;
        !          5063:     int i, r2, r3, ret=0;*/
        !          5064:     int r2, r3;
        !          5065: 
        !          5066:     /* Read r2 and r3 */
        !          5067:     r2 = mii_rd(MII_ID0, phyaddr, ioaddr);
        !          5068:     r3 = mii_rd(MII_ID1, phyaddr, ioaddr);
        !          5069:                                                 /* SEEQ and Cypress way * /
        !          5070:     / * Shuffle r2 and r3 * /
        !          5071:     a.reg=0;
        !          5072:     r3 = ((r3>>10)|(r2<<6))&0x0ff;
        !          5073:     r2 = ((r2>>2)&0x3fff);
        !          5074: 
        !          5075:     / * Bit reverse r3 * /
        !          5076:     for (i=0;i<8;i++) {
        !          5077:        ret<<=1;
        !          5078:        ret |= (r3&1);
        !          5079:        r3>>=1;
        !          5080:     }
        !          5081: 
        !          5082:     / * Bit reverse r2 * /
        !          5083:     for (i=0;i<16;i++) {
        !          5084:        a.reg<<=1;
        !          5085:        a.reg |= (r2&1);
        !          5086:        r2>>=1;
        !          5087:     }
        !          5088: 
        !          5089:     / * Swap r2 bytes * /
        !          5090:     i=a.breg[0];
        !          5091:     a.breg[0]=a.breg[1];
        !          5092:     a.breg[1]=i;
        !          5093: 
        !          5094:     return ((a.reg<<8)|ret); */                 /* SEEQ and Cypress way */
        !          5095: /*    return ((r2<<6)|(u_int)(r3>>10)); */      /* NATIONAL and BROADCOM way */
        !          5096:     return r2;                                  /* (I did it) My way */
        !          5097: }
        !          5098: 
        !          5099: /*
        !          5100: ** The SROM spec forces us to search addresses [1-31 0]. Bummer.
        !          5101: */
        !          5102: static int
        !          5103: mii_get_phy(struct device *dev)
        !          5104: {
        !          5105:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5106:     u_long iobase = dev->base_addr;
        !          5107:     int i, j, k, n, limit=sizeof(phy_info)/sizeof(struct phy_table);
        !          5108:     int id;
        !          5109:     
        !          5110:     lp->active = 0;
        !          5111:     lp->useMII = TRUE;
        !          5112: 
        !          5113:     /* Search the MII address space for possible PHY devices */
        !          5114:     for (n=0, lp->mii_cnt=0, i=1; !((i==1) && (n==1)); i=(++i)%DE4X5_MAX_MII) {
        !          5115:        lp->phy[lp->active].addr = i;
        !          5116:        if (i==0) n++;                             /* Count cycles */
        !          5117:        while (de4x5_reset_phy(dev)<0) udelay(100);/* Wait for reset */
        !          5118:        id = mii_get_oui(i, DE4X5_MII); 
        !          5119:        if ((id == 0) || (id == 65535)) continue;  /* Valid ID? */
        !          5120:        for (j=0; j<limit; j++) {                  /* Search PHY table */
        !          5121:            if (id != phy_info[j].id) continue;    /* ID match? */
        !          5122:            for (k=0; lp->phy[k].id && (k < DE4X5_MAX_PHY); k++);
        !          5123:            if (k < DE4X5_MAX_PHY) {
        !          5124:                memcpy((char *)&lp->phy[k],
        !          5125:                       (char *)&phy_info[j], sizeof(struct phy_table));
        !          5126:                lp->phy[k].addr = i;
        !          5127:                lp->mii_cnt++;
        !          5128:                lp->active++;
        !          5129:            } else {
        !          5130:                goto purgatory;                    /* Stop the search */
        !          5131:            }
        !          5132:            break;
        !          5133:        }
        !          5134:        if ((j == limit) && (i < DE4X5_MAX_MII)) {
        !          5135:            for (k=0; lp->phy[k].id && (k < DE4X5_MAX_PHY); k++);
        !          5136:            lp->phy[k].addr = i;
        !          5137:            lp->phy[k].id = id;
        !          5138:            lp->phy[k].spd.reg = GENERIC_REG;      /* ANLPA register         */
        !          5139:            lp->phy[k].spd.mask = GENERIC_MASK;    /* 100Mb/s technologies   */
        !          5140:            lp->phy[k].spd.value = GENERIC_VALUE;  /* TX & T4, H/F Duplex    */
        !          5141:            lp->mii_cnt++;
        !          5142:            lp->active++;
        !          5143:            printk("%s: Using generic MII device control. If the board doesn't operate, \nplease mail the following dump to the author:\n", dev->name);
        !          5144:            j = de4x5_debug;
        !          5145:            de4x5_debug |= DEBUG_MII;
        !          5146:            de4x5_dbg_mii(dev, k);
        !          5147:            de4x5_debug = j;
        !          5148:            printk("\n");
        !          5149:        }
        !          5150:     }
        !          5151:   purgatory:
        !          5152:     lp->active = 0;
        !          5153:     if (lp->phy[0].id) {                           /* Reset the PHY devices */
        !          5154:        for (k=0; lp->phy[k].id && (k < DE4X5_MAX_PHY); k++) { /*For each PHY*/
        !          5155:            mii_wr(MII_CR_RST, MII_CR, lp->phy[k].addr, DE4X5_MII);
        !          5156:            while (mii_rd(MII_CR, lp->phy[k].addr, DE4X5_MII) & MII_CR_RST);
        !          5157:            
        !          5158:            de4x5_dbg_mii(dev, k);
        !          5159:        }
        !          5160:     }
        !          5161:     if (!lp->mii_cnt) lp->useMII = FALSE;
        !          5162: 
        !          5163:     return lp->mii_cnt;
        !          5164: }
        !          5165: 
        !          5166: static char *
        !          5167: build_setup_frame(struct device *dev, int mode)
        !          5168: {
        !          5169:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5170:     int i;
        !          5171:     char *pa = lp->setup_frame;
        !          5172:     
        !          5173:     /* Initialise the setup frame */
        !          5174:     if (mode == ALL) {
        !          5175:        memset(lp->setup_frame, 0, SETUP_FRAME_LEN);
        !          5176:     }
        !          5177:     
        !          5178:     if (lp->setup_f == HASH_PERF) {
        !          5179:        for (pa=lp->setup_frame+IMPERF_PA_OFFSET, i=0; i<ETH_ALEN; i++) {
        !          5180:            *(pa + i) = dev->dev_addr[i];                 /* Host address */
        !          5181:            if (i & 0x01) pa += 2;
        !          5182:        }
        !          5183:        *(lp->setup_frame + (HASH_TABLE_LEN >> 3) - 3) = 0x80;
        !          5184:     } else {
        !          5185:        for (i=0; i<ETH_ALEN; i++) { /* Host address */
        !          5186:            *(pa + (i&1)) = dev->dev_addr[i];
        !          5187:            if (i & 0x01) pa += 4;
        !          5188:        }
        !          5189:        for (i=0; i<ETH_ALEN; i++) { /* Broadcast address */
        !          5190:            *(pa + (i&1)) = (char) 0xff;
        !          5191:            if (i & 0x01) pa += 4;
        !          5192:        }
        !          5193:     }
        !          5194:     
        !          5195:     return pa;                     /* Points to the next entry */
        !          5196: }
        !          5197: 
        !          5198: static void
        !          5199: enable_ast(struct device *dev, u32 time_out)
        !          5200: {
        !          5201:     timeout(dev, (void *)&de4x5_ast, (u_long)dev, time_out);
        !          5202:     
        !          5203:     return;
        !          5204: }
        !          5205: 
        !          5206: static void
        !          5207: disable_ast(struct device *dev)
        !          5208: {
        !          5209:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5210:     
        !          5211:     del_timer(&lp->timer);
        !          5212:     
        !          5213:     return;
        !          5214: }
        !          5215: 
        !          5216: static long
        !          5217: de4x5_switch_mac_port(struct device *dev)
        !          5218: {
        !          5219:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5220:     u_long iobase = dev->base_addr;
        !          5221:     s32 omr;
        !          5222: 
        !          5223:     STOP_DE4X5;
        !          5224: 
        !          5225:     /* Assert the OMR_PS bit in CSR6 */
        !          5226:     omr = (inl(DE4X5_OMR) & ~(OMR_PS | OMR_HBD | OMR_TTM | OMR_PCS | OMR_SCR |
        !          5227:                                                                     OMR_FDX));
        !          5228:     omr |= lp->infoblock_csr6;
        !          5229:     if (omr & OMR_PS) omr |= OMR_HBD;
        !          5230:     outl(omr, DE4X5_OMR);
        !          5231:     
        !          5232:     /* Soft Reset */
        !          5233:     RESET_DE4X5;
        !          5234:     
        !          5235:     /* Restore the GEP - especially for COMPACT and Type 0 Infoblocks */
        !          5236:     if (lp->chipset == DC21140) {
        !          5237:        gep_wr(lp->cache.gepc, dev);
        !          5238:        gep_wr(lp->cache.gep, dev);
        !          5239:     } else if ((lp->chipset & ~0x0ff) == DC2114x) {
        !          5240:        reset_init_sia(dev, lp->cache.csr13, lp->cache.csr14, lp->cache.csr15);
        !          5241:     }
        !          5242: 
        !          5243:     /* Restore CSR6 */
        !          5244:     outl(omr, DE4X5_OMR);
        !          5245: 
        !          5246:     /* Reset CSR8 */
        !          5247:     inl(DE4X5_MFC);
        !          5248: 
        !          5249:     return omr;
        !          5250: }
        !          5251: 
        !          5252: static void
        !          5253: gep_wr(s32 data, struct device *dev)
        !          5254: {
        !          5255:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5256:     u_long iobase = dev->base_addr;
        !          5257: 
        !          5258:     if (lp->chipset == DC21140) {
        !          5259:        outl(data, DE4X5_GEP);
        !          5260:     } else if ((lp->chipset & ~0x00ff) == DC2114x) {
        !          5261:        outl((data<<16) | lp->cache.csr15, DE4X5_SIGR);
        !          5262:     }
        !          5263: 
        !          5264:     return;
        !          5265: }
        !          5266: 
        !          5267: static int
        !          5268: gep_rd(struct device *dev)
        !          5269: {
        !          5270:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5271:     u_long iobase = dev->base_addr;
        !          5272: 
        !          5273:     if (lp->chipset == DC21140) {
        !          5274:        return inl(DE4X5_GEP);
        !          5275:     } else if ((lp->chipset & ~0x00ff) == DC2114x) {
        !          5276:        return (inl(DE4X5_SIGR) & 0x000fffff);
        !          5277:     }
        !          5278: 
        !          5279:     return 0;
        !          5280: }
        !          5281: 
        !          5282: static void
        !          5283: timeout(struct device *dev, void (*fn)(u_long data), u_long data, u_long msec)
        !          5284: {
        !          5285:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5286:     int dt;
        !          5287:     
        !          5288:     /* First, cancel any pending timer events */
        !          5289:     del_timer(&lp->timer);
        !          5290:     
        !          5291:     /* Convert msec to ticks */
        !          5292:     dt = (msec * HZ) / 1000;
        !          5293:     if (dt==0) dt=1;
        !          5294:     
        !          5295:     /* Set up timer */
        !          5296:     lp->timer.expires = jiffies + dt;
        !          5297:     lp->timer.function = fn;
        !          5298:     lp->timer.data = data;
        !          5299:     add_timer(&lp->timer);
        !          5300:     
        !          5301:     return;
        !          5302: }
        !          5303: 
        !          5304: static void
        !          5305: yawn(struct device *dev, int state)
        !          5306: {
        !          5307:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5308:     u_long iobase = dev->base_addr;
        !          5309: 
        !          5310:     if ((lp->chipset == DC21040) || (lp->chipset == DC21140)) return;
        !          5311: 
        !          5312:     if(lp->bus == EISA) {
        !          5313:        switch(state) {
        !          5314:          case WAKEUP:
        !          5315:            outb(WAKEUP, PCI_CFPM);
        !          5316:            de4x5_ms_delay(10);
        !          5317:            break;
        !          5318: 
        !          5319:          case SNOOZE:
        !          5320:            outb(SNOOZE, PCI_CFPM);
        !          5321:            break;
        !          5322: 
        !          5323:          case SLEEP:
        !          5324:            outl(0, DE4X5_SICR);
        !          5325:            outb(SLEEP, PCI_CFPM);
        !          5326:            break;
        !          5327:        }
        !          5328:     } else {
        !          5329:        switch(state) {
        !          5330:          case WAKEUP:
        !          5331:            pcibios_write_config_byte(lp->bus_num, lp->device << 3, 
        !          5332:                                      PCI_CFDA_PSM, WAKEUP);
        !          5333:            de4x5_ms_delay(10);
        !          5334:            break;
        !          5335: 
        !          5336:          case SNOOZE:
        !          5337:            pcibios_write_config_byte(lp->bus_num, lp->device << 3, 
        !          5338:                                      PCI_CFDA_PSM, SNOOZE);
        !          5339:            break;
        !          5340: 
        !          5341:          case SLEEP:
        !          5342:            outl(0, DE4X5_SICR);
        !          5343:            pcibios_write_config_byte(lp->bus_num, lp->device << 3, 
        !          5344:                                      PCI_CFDA_PSM, SLEEP);
        !          5345:            break;
        !          5346:        }
        !          5347:     }
        !          5348: 
        !          5349:     return;
        !          5350: }
        !          5351: 
        !          5352: static void
        !          5353: de4x5_parse_params(struct device *dev)
        !          5354: {
        !          5355:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5356:     char *p, *q, t;
        !          5357: 
        !          5358:     lp->params.fdx = 0;
        !          5359:     lp->params.autosense = AUTO;
        !          5360: 
        !          5361:     if (args == NULL) return;
        !          5362: 
        !          5363:     if ((p = strstr(args, dev->name))) {
        !          5364:        if (!(q = strstr(p+strlen(dev->name), "eth"))) q = p + strlen(p);
        !          5365:        t = *q;
        !          5366:        *q = '\0';
        !          5367: 
        !          5368:        if (strstr(p, "fdx") || strstr(p, "FDX")) lp->params.fdx = 1;
        !          5369: 
        !          5370:        if (strstr(p, "autosense") || strstr(p, "AUTOSENSE")) {
        !          5371:            if (strstr(p, "TP")) {
        !          5372:                lp->params.autosense = TP;
        !          5373:            } else if (strstr(p, "TP_NW")) {
        !          5374:                lp->params.autosense = TP_NW;
        !          5375:            } else if (strstr(p, "BNC")) {
        !          5376:                lp->params.autosense = BNC;
        !          5377:            } else if (strstr(p, "AUI")) {
        !          5378:                lp->params.autosense = AUI;
        !          5379:            } else if (strstr(p, "BNC_AUI")) {
        !          5380:                lp->params.autosense = BNC;
        !          5381:            } else if (strstr(p, "10Mb")) {
        !          5382:                lp->params.autosense = _10Mb;
        !          5383:            } else if (strstr(p, "100Mb")) {
        !          5384:                lp->params.autosense = _100Mb;
        !          5385:            } else if (strstr(p, "AUTO")) {
        !          5386:                lp->params.autosense = AUTO;
        !          5387:            }
        !          5388:        }
        !          5389:        *q = t;
        !          5390:     }
        !          5391: 
        !          5392:     return;
        !          5393: }
        !          5394: 
        !          5395: static void
        !          5396: de4x5_dbg_open(struct device *dev)
        !          5397: {
        !          5398:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5399:     int i;
        !          5400:     
        !          5401:     if (de4x5_debug & DEBUG_OPEN) {
        !          5402:        printk("%s: de4x5 opening with irq %d\n",dev->name,dev->irq);
        !          5403:        printk("\tphysical address: ");
        !          5404:        for (i=0;i<6;i++) {
        !          5405:            printk("%2.2x:",(short)dev->dev_addr[i]);
        !          5406:        }
        !          5407:        printk("\n");
        !          5408:        printk("Descriptor head addresses:\n");
        !          5409:        printk("\t0x%8.8lx  0x%8.8lx\n",(u_long)lp->rx_ring,(u_long)lp->tx_ring);
        !          5410:        printk("Descriptor addresses:\nRX: ");
        !          5411:        for (i=0;i<lp->rxRingSize-1;i++){
        !          5412:            if (i < 3) {
        !          5413:                printk("0x%8.8lx  ",(u_long)&lp->rx_ring[i].status);
        !          5414:            }
        !          5415:        }
        !          5416:        printk("...0x%8.8lx\n",(u_long)&lp->rx_ring[i].status);
        !          5417:        printk("TX: ");
        !          5418:        for (i=0;i<lp->txRingSize-1;i++){
        !          5419:            if (i < 3) {
        !          5420:                printk("0x%8.8lx  ", (u_long)&lp->tx_ring[i].status);
        !          5421:            }
        !          5422:        }
        !          5423:        printk("...0x%8.8lx\n", (u_long)&lp->tx_ring[i].status);
        !          5424:        printk("Descriptor buffers:\nRX: ");
        !          5425:        for (i=0;i<lp->rxRingSize-1;i++){
        !          5426:            if (i < 3) {
        !          5427:                printk("0x%8.8x  ",le32_to_cpu(lp->rx_ring[i].buf));
        !          5428:            }
        !          5429:        }
        !          5430:        printk("...0x%8.8x\n",le32_to_cpu(lp->rx_ring[i].buf));
        !          5431:        printk("TX: ");
        !          5432:        for (i=0;i<lp->txRingSize-1;i++){
        !          5433:            if (i < 3) {
        !          5434:                printk("0x%8.8x  ", le32_to_cpu(lp->tx_ring[i].buf));
        !          5435:            }
        !          5436:        }
        !          5437:        printk("...0x%8.8x\n", le32_to_cpu(lp->tx_ring[i].buf));
        !          5438:        printk("Ring size: \nRX: %d\nTX: %d\n", 
        !          5439:               (short)lp->rxRingSize, 
        !          5440:               (short)lp->txRingSize); 
        !          5441:     }
        !          5442:     
        !          5443:     return;
        !          5444: }
        !          5445: 
        !          5446: static void
        !          5447: de4x5_dbg_mii(struct device *dev, int k)
        !          5448: {
        !          5449:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5450:     u_long iobase = dev->base_addr;
        !          5451:     
        !          5452:     if (de4x5_debug & DEBUG_MII) {
        !          5453:        printk("\nMII device address: %d\n", lp->phy[k].addr);
        !          5454:        printk("MII CR:  %x\n",mii_rd(MII_CR,lp->phy[k].addr,DE4X5_MII));
        !          5455:        printk("MII SR:  %x\n",mii_rd(MII_SR,lp->phy[k].addr,DE4X5_MII));
        !          5456:        printk("MII ID0: %x\n",mii_rd(MII_ID0,lp->phy[k].addr,DE4X5_MII));
        !          5457:        printk("MII ID1: %x\n",mii_rd(MII_ID1,lp->phy[k].addr,DE4X5_MII));
        !          5458:        if (lp->phy[k].id != BROADCOM_T4) {
        !          5459:            printk("MII ANA: %x\n",mii_rd(0x04,lp->phy[k].addr,DE4X5_MII));
        !          5460:            printk("MII ANC: %x\n",mii_rd(0x05,lp->phy[k].addr,DE4X5_MII));
        !          5461:        }
        !          5462:        printk("MII 16:  %x\n",mii_rd(0x10,lp->phy[k].addr,DE4X5_MII));
        !          5463:        if (lp->phy[k].id != BROADCOM_T4) {
        !          5464:            printk("MII 17:  %x\n",mii_rd(0x11,lp->phy[k].addr,DE4X5_MII));
        !          5465:            printk("MII 18:  %x\n",mii_rd(0x12,lp->phy[k].addr,DE4X5_MII));
        !          5466:        } else {
        !          5467:            printk("MII 20:  %x\n",mii_rd(0x14,lp->phy[k].addr,DE4X5_MII));
        !          5468:        }
        !          5469:     }
        !          5470:     
        !          5471:     return;
        !          5472: }
        !          5473: 
        !          5474: static void
        !          5475: de4x5_dbg_media(struct device *dev)
        !          5476: {
        !          5477:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5478:     
        !          5479:     if (lp->media != lp->c_media) {
        !          5480:        if (de4x5_debug & DEBUG_MEDIA) {
        !          5481:            printk("%s: media is %s%s\n", dev->name,
        !          5482:                   (lp->media == NC  ? "unconnected, link down or incompatible connection" :
        !          5483:                    (lp->media == TP  ? "TP" :
        !          5484:                     (lp->media == ANS ? "TP/Nway" :
        !          5485:                      (lp->media == BNC ? "BNC" : 
        !          5486:                       (lp->media == AUI ? "AUI" : 
        !          5487:                        (lp->media == BNC_AUI ? "BNC/AUI" : 
        !          5488:                         (lp->media == EXT_SIA ? "EXT SIA" : 
        !          5489:                          (lp->media == _100Mb  ? "100Mb/s" :
        !          5490:                           (lp->media == _10Mb   ? "10Mb/s" :
        !          5491:                            "???"
        !          5492:                            ))))))))), (lp->fdx?" full duplex.":"."));
        !          5493:        }
        !          5494:        lp->c_media = lp->media;
        !          5495:     }
        !          5496:     
        !          5497:     return;
        !          5498: }
        !          5499: 
        !          5500: static void
        !          5501: de4x5_dbg_srom(struct de4x5_srom *p)
        !          5502: {
        !          5503:     int i;
        !          5504: 
        !          5505:     if (de4x5_debug & DEBUG_SROM) {
        !          5506:        printk("Sub-system Vendor ID: %04x\n", *((u_short *)p->sub_vendor_id));
        !          5507:        printk("Sub-system ID:        %04x\n", *((u_short *)p->sub_system_id));
        !          5508:        printk("ID Block CRC:         %02x\n", (u_char)(p->id_block_crc));
        !          5509:        printk("SROM version:         %02x\n", (u_char)(p->version));
        !          5510:        printk("# controllers:         %02x\n", (u_char)(p->num_controllers));
        !          5511: 
        !          5512:        printk("Hardware Address:     ");
        !          5513:        for (i=0;i<ETH_ALEN-1;i++) {
        !          5514:            printk("%02x:", (u_char)*(p->ieee_addr+i));
        !          5515:        }
        !          5516:        printk("%02x\n", (u_char)*(p->ieee_addr+i));
        !          5517:        printk("CRC checksum:         %04x\n", (u_short)(p->chksum));
        !          5518:        for (i=0; i<64; i++) {
        !          5519:            printk("%3d %04x\n", i<<1, (u_short)*((u_short *)p+i));
        !          5520:        }
        !          5521:     }
        !          5522: 
        !          5523:     return;
        !          5524: }
        !          5525: 
        !          5526: static void
        !          5527: de4x5_dbg_rx(struct sk_buff *skb, int len)
        !          5528: {
        !          5529:     int i, j;
        !          5530: 
        !          5531:     if (de4x5_debug & DEBUG_RX) {
        !          5532:        printk("R: %02x:%02x:%02x:%02x:%02x:%02x <- %02x:%02x:%02x:%02x:%02x:%02x len/SAP:%02x%02x [%d]\n",
        !          5533:               (u_char)skb->data[0],
        !          5534:               (u_char)skb->data[1],
        !          5535:               (u_char)skb->data[2],
        !          5536:               (u_char)skb->data[3],
        !          5537:               (u_char)skb->data[4],
        !          5538:               (u_char)skb->data[5],
        !          5539:               (u_char)skb->data[6],
        !          5540:               (u_char)skb->data[7],
        !          5541:               (u_char)skb->data[8],
        !          5542:               (u_char)skb->data[9],
        !          5543:               (u_char)skb->data[10],
        !          5544:               (u_char)skb->data[11],
        !          5545:               (u_char)skb->data[12],
        !          5546:               (u_char)skb->data[13],
        !          5547:               len);
        !          5548:        if (de4x5_debug & DEBUG_RX) {
        !          5549:            for (j=0; len>0;j+=16, len-=16) {
        !          5550:                printk("    %03x: ",j);
        !          5551:                for (i=0; i<16 && i<len; i++) {
        !          5552:                    printk("%02x ",(u_char)skb->data[i+j]);
        !          5553:                }
        !          5554:                printk("\n");
        !          5555:            }
        !          5556:        }
        !          5557:     }
        !          5558: 
        !          5559:     return;
        !          5560: }
        !          5561: 
        !          5562: /*
        !          5563: ** Perform IOCTL call functions here. Some are privileged operations and the
        !          5564: ** effective uid is checked in those cases. In the normal course of events
        !          5565: ** this function is only used for my testing.
        !          5566: */
        !          5567: static int
        !          5568: de4x5_ioctl(struct device *dev, struct ifreq *rq, int cmd)
        !          5569: {
        !          5570:     struct de4x5_private *lp = (struct de4x5_private *)dev->priv;
        !          5571:     struct de4x5_ioctl *ioc = (struct de4x5_ioctl *) &rq->ifr_data;
        !          5572:     u_long iobase = dev->base_addr;
        !          5573:     int i, j, status = 0;
        !          5574:     s32 omr;
        !          5575:     union {
        !          5576:        u8  addr[144];
        !          5577:        u16 sval[72];
        !          5578:        u32 lval[36];
        !          5579:     } tmp;
        !          5580:     
        !          5581:     switch(ioc->cmd) {
        !          5582:     case DE4X5_GET_HWADDR:           /* Get the hardware address */
        !          5583:        ioc->len = ETH_ALEN;
        !          5584:        status = verify_area(VERIFY_WRITE, (void *)ioc->data, ioc->len);
        !          5585:        if (status)
        !          5586:            break;
        !          5587:        for (i=0; i<ETH_ALEN; i++) {
        !          5588:            tmp.addr[i] = dev->dev_addr[i];
        !          5589:        }
        !          5590:        copy_to_user(ioc->data, tmp.addr, ioc->len);
        !          5591:        
        !          5592:        break;
        !          5593:     case DE4X5_SET_HWADDR:           /* Set the hardware address */
        !          5594:        status = verify_area(VERIFY_READ, (void *)ioc->data, ETH_ALEN);
        !          5595:        if (status)
        !          5596:            break;
        !          5597:        status = -EPERM;
        !          5598:        if (!suser())
        !          5599:            break;
        !          5600:        status = 0;
        !          5601:        copy_from_user(tmp.addr, ioc->data, ETH_ALEN);
        !          5602:        for (i=0; i<ETH_ALEN; i++) {
        !          5603:            dev->dev_addr[i] = tmp.addr[i];
        !          5604:        }
        !          5605:        build_setup_frame(dev, PHYS_ADDR_ONLY);
        !          5606:        /* Set up the descriptor and give ownership to the card */
        !          5607:        while (test_and_set_bit(0, (void *)&dev->tbusy) != 0);
        !          5608:        load_packet(dev, lp->setup_frame, TD_IC | PERFECT_F | TD_SET | 
        !          5609:                                                        SETUP_FRAME_LEN, NULL);
        !          5610:        lp->tx_new = (++lp->tx_new) % lp->txRingSize;
        !          5611:        outl(POLL_DEMAND, DE4X5_TPD);                /* Start the TX */
        !          5612:        dev->tbusy = 0;                              /* Unlock the TX ring */
        !          5613:        
        !          5614:        break;
        !          5615:     case DE4X5_SET_PROM:             /* Set Promiscuous Mode */
        !          5616:        if (suser()) {
        !          5617:            omr = inl(DE4X5_OMR);
        !          5618:            omr |= OMR_PR;
        !          5619:            outl(omr, DE4X5_OMR);
        !          5620:            dev->flags |= IFF_PROMISC;
        !          5621:        } else {
        !          5622:            status = -EPERM;
        !          5623:        }
        !          5624:        
        !          5625:        break;
        !          5626:     case DE4X5_CLR_PROM:             /* Clear Promiscuous Mode */
        !          5627:        if (suser()) {
        !          5628:            omr = inl(DE4X5_OMR);
        !          5629:            omr &= ~OMR_PR;
        !          5630:            outb(omr, DE4X5_OMR);
        !          5631:            dev->flags &= ~IFF_PROMISC;
        !          5632:        } else {
        !          5633:            status = -EPERM;
        !          5634:        }
        !          5635:        
        !          5636:        break;
        !          5637:     case DE4X5_SAY_BOO:              /* Say "Boo!" to the kernel log file */
        !          5638:        printk("%s: Boo!\n", dev->name);
        !          5639:        
        !          5640:        break;
        !          5641:     case DE4X5_MCA_EN:               /* Enable pass all multicast addressing */
        !          5642:        if (suser()) {
        !          5643:            omr = inl(DE4X5_OMR);
        !          5644:            omr |= OMR_PM;
        !          5645:            outl(omr, DE4X5_OMR);
        !          5646:        } else {
        !          5647:            status = -EPERM;
        !          5648:        }
        !          5649:        
        !          5650:        break;
        !          5651:     case DE4X5_GET_STATS:            /* Get the driver statistics */
        !          5652:        ioc->len = sizeof(lp->pktStats);
        !          5653:        status = verify_area(VERIFY_WRITE, (void *)ioc->data, ioc->len);
        !          5654:        if (status)
        !          5655:            break;
        !          5656:        
        !          5657:        cli();
        !          5658:        copy_to_user(ioc->data, &lp->pktStats, ioc->len); 
        !          5659:        sti();
        !          5660:        
        !          5661:        break;
        !          5662:     case DE4X5_CLR_STATS:            /* Zero out the driver statistics */
        !          5663:        if (suser()) {
        !          5664:            cli();
        !          5665:            memset(&lp->pktStats, 0, sizeof(lp->pktStats));
        !          5666:            sti();
        !          5667:        } else {
        !          5668:            status = -EPERM;
        !          5669:        }
        !          5670:        
        !          5671:        break;
        !          5672:     case DE4X5_GET_OMR:              /* Get the OMR Register contents */
        !          5673:        tmp.addr[0] = inl(DE4X5_OMR);
        !          5674:        if (!(status = verify_area(VERIFY_WRITE, (void *)ioc->data, 1))) {
        !          5675:            copy_to_user(ioc->data, tmp.addr, 1);
        !          5676:        }
        !          5677:        
        !          5678:        break;
        !          5679:     case DE4X5_SET_OMR:              /* Set the OMR Register contents */
        !          5680:        if (suser()) {
        !          5681:            if (!(status = verify_area(VERIFY_READ, (void *)ioc->data, 1))) {
        !          5682:                copy_from_user(tmp.addr, ioc->data, 1);
        !          5683:                outl(tmp.addr[0], DE4X5_OMR);
        !          5684:            }
        !          5685:        } else {
        !          5686:            status = -EPERM;
        !          5687:        }
        !          5688:        
        !          5689:        break;
        !          5690:     case DE4X5_GET_REG:              /* Get the DE4X5 Registers */
        !          5691:        j = 0;
        !          5692:        tmp.lval[0] = inl(DE4X5_STS); j+=4;
        !          5693:        tmp.lval[1] = inl(DE4X5_BMR); j+=4;
        !          5694:        tmp.lval[2] = inl(DE4X5_IMR); j+=4;
        !          5695:        tmp.lval[3] = inl(DE4X5_OMR); j+=4;
        !          5696:        tmp.lval[4] = inl(DE4X5_SISR); j+=4;
        !          5697:        tmp.lval[5] = inl(DE4X5_SICR); j+=4;
        !          5698:        tmp.lval[6] = inl(DE4X5_STRR); j+=4;
        !          5699:        tmp.lval[7] = inl(DE4X5_SIGR); j+=4;
        !          5700:        ioc->len = j;
        !          5701:        if (!(status = verify_area(VERIFY_WRITE, (void *)ioc->data, ioc->len))) {
        !          5702:            copy_to_user(ioc->data, tmp.addr, ioc->len);
        !          5703:        }
        !          5704:        break;
        !          5705:        
        !          5706: #define DE4X5_DUMP              0x0f /* Dump the DE4X5 Status */
        !          5707: /*     
        !          5708:       case DE4X5_DUMP:
        !          5709:        j = 0;
        !          5710:        tmp.addr[j++] = dev->irq;
        !          5711:        for (i=0; i<ETH_ALEN; i++) {
        !          5712:            tmp.addr[j++] = dev->dev_addr[i];
        !          5713:        }
        !          5714:        tmp.addr[j++] = lp->rxRingSize;
        !          5715:        tmp.lval[j>>2] = (long)lp->rx_ring; j+=4;
        !          5716:        tmp.lval[j>>2] = (long)lp->tx_ring; j+=4;
        !          5717:        
        !          5718:        for (i=0;i<lp->rxRingSize-1;i++){
        !          5719:            if (i < 3) {
        !          5720:                tmp.lval[j>>2] = (long)&lp->rx_ring[i].status; j+=4;
        !          5721:            }
        !          5722:        }
        !          5723:        tmp.lval[j>>2] = (long)&lp->rx_ring[i].status; j+=4;
        !          5724:        for (i=0;i<lp->txRingSize-1;i++){
        !          5725:            if (i < 3) {
        !          5726:                tmp.lval[j>>2] = (long)&lp->tx_ring[i].status; j+=4;
        !          5727:            }
        !          5728:        }
        !          5729:        tmp.lval[j>>2] = (long)&lp->tx_ring[i].status; j+=4;
        !          5730:        
        !          5731:        for (i=0;i<lp->rxRingSize-1;i++){
        !          5732:            if (i < 3) {
        !          5733:                tmp.lval[j>>2] = (s32)le32_to_cpu(lp->rx_ring[i].buf); j+=4;
        !          5734:            }
        !          5735:        }
        !          5736:        tmp.lval[j>>2] = (s32)le32_to_cpu(lp->rx_ring[i].buf); j+=4;
        !          5737:        for (i=0;i<lp->txRingSize-1;i++){
        !          5738:            if (i < 3) {
        !          5739:                tmp.lval[j>>2] = (s32)le32_to_cpu(lp->tx_ring[i].buf); j+=4;
        !          5740:            }
        !          5741:        }
        !          5742:        tmp.lval[j>>2] = (s32)le32_to_cpu(lp->tx_ring[i].buf); j+=4;
        !          5743:        
        !          5744:        for (i=0;i<lp->rxRingSize;i++){
        !          5745:            tmp.lval[j>>2] = le32_to_cpu(lp->rx_ring[i].status); j+=4;
        !          5746:        }
        !          5747:        for (i=0;i<lp->txRingSize;i++){
        !          5748:            tmp.lval[j>>2] = le32_to_cpu(lp->tx_ring[i].status); j+=4;
        !          5749:        }
        !          5750:        
        !          5751:        tmp.lval[j>>2] = inl(DE4X5_BMR);  j+=4;
        !          5752:        tmp.lval[j>>2] = inl(DE4X5_TPD);  j+=4;
        !          5753:        tmp.lval[j>>2] = inl(DE4X5_RPD);  j+=4;
        !          5754:        tmp.lval[j>>2] = inl(DE4X5_RRBA); j+=4;
        !          5755:        tmp.lval[j>>2] = inl(DE4X5_TRBA); j+=4;
        !          5756:        tmp.lval[j>>2] = inl(DE4X5_STS);  j+=4;
        !          5757:        tmp.lval[j>>2] = inl(DE4X5_OMR);  j+=4;
        !          5758:        tmp.lval[j>>2] = inl(DE4X5_IMR);  j+=4;
        !          5759:        tmp.lval[j>>2] = lp->chipset; j+=4; 
        !          5760:        if (lp->chipset == DC21140) {
        !          5761:            tmp.lval[j>>2] = gep_rd(dev);  j+=4;
        !          5762:        } else {
        !          5763:            tmp.lval[j>>2] = inl(DE4X5_SISR); j+=4;
        !          5764:            tmp.lval[j>>2] = inl(DE4X5_SICR); j+=4;
        !          5765:            tmp.lval[j>>2] = inl(DE4X5_STRR); j+=4;
        !          5766:            tmp.lval[j>>2] = inl(DE4X5_SIGR); j+=4; 
        !          5767:        }
        !          5768:        tmp.lval[j>>2] = lp->phy[lp->active].id; j+=4; 
        !          5769:        if (lp->phy[lp->active].id && (!lp->useSROM || lp->useMII)) {
        !          5770:            tmp.lval[j>>2] = lp->active; j+=4; 
        !          5771:            tmp.lval[j>>2]=mii_rd(MII_CR,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5772:            tmp.lval[j>>2]=mii_rd(MII_SR,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5773:            tmp.lval[j>>2]=mii_rd(MII_ID0,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5774:            tmp.lval[j>>2]=mii_rd(MII_ID1,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5775:            if (lp->phy[lp->active].id != BROADCOM_T4) {
        !          5776:                tmp.lval[j>>2]=mii_rd(MII_ANA,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5777:                tmp.lval[j>>2]=mii_rd(MII_ANLPA,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5778:            }
        !          5779:            tmp.lval[j>>2]=mii_rd(0x10,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5780:            if (lp->phy[lp->active].id != BROADCOM_T4) {
        !          5781:                tmp.lval[j>>2]=mii_rd(0x11,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5782:                tmp.lval[j>>2]=mii_rd(0x12,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5783:            } else {
        !          5784:                tmp.lval[j>>2]=mii_rd(0x14,lp->phy[lp->active].addr,DE4X5_MII); j+=4;
        !          5785:            }
        !          5786:        }
        !          5787:        
        !          5788:        tmp.addr[j++] = lp->txRingSize;
        !          5789:        tmp.addr[j++] = dev->tbusy;
        !          5790:        
        !          5791:        ioc->len = j;
        !          5792:        if (!(status = verify_area(VERIFY_WRITE, (void *)ioc->data, ioc->len))) {
        !          5793:            copy_to_user(ioc->data, tmp.addr, ioc->len);
        !          5794:        }
        !          5795:        
        !          5796:        break;
        !          5797: */
        !          5798:     default:
        !          5799:        status = -EOPNOTSUPP;
        !          5800:     }
        !          5801:     
        !          5802:     return status;
        !          5803: }
        !          5804: 
        !          5805: #ifdef MODULE
        !          5806: /*
        !          5807: ** Note now that module autoprobing is allowed under EISA and PCI. The
        !          5808: ** IRQ lines will not be auto-detected; instead I'll rely on the BIOSes
        !          5809: ** to "do the right thing".
        !          5810: */
        !          5811: #define LP(a) ((struct de4x5_private *)(a))
        !          5812: static struct device *mdev = NULL;
        !          5813: static int io=0x0;/* EDIT THIS LINE FOR YOUR CONFIGURATION IF NEEDED        */
        !          5814: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,0)
        !          5815: MODULE_PARM(io, "i");
        !          5816: #endif /* LINUX_VERSION_CODE */
        !          5817: 
        !          5818: int
        !          5819: init_module(void)
        !          5820: {
        !          5821:     int i, num, status = -EIO;
        !          5822:     struct device *p;
        !          5823: 
        !          5824:     num = count_adapters();
        !          5825: 
        !          5826:     for (i=0; i<num; i++) {
        !          5827:        if ((p = insert_device(NULL, io, de4x5_probe)) == NULL) 
        !          5828:            return -ENOMEM;
        !          5829: 
        !          5830:        if (!mdev) mdev = p;
        !          5831: 
        !          5832:        if (register_netdev(p) != 0) {
        !          5833:            kfree(p);
        !          5834:        } else {
        !          5835:            status = 0;                 /* At least one adapter will work */
        !          5836:            lastModule = p;
        !          5837:        }
        !          5838:     }
        !          5839: 
        !          5840:     return status;
        !          5841: }
        !          5842: 
        !          5843: void
        !          5844: cleanup_module(void)
        !          5845: {
        !          5846:     while (mdev != NULL) {
        !          5847:        mdev = unlink_modules(mdev);
        !          5848:     }
        !          5849: 
        !          5850:     return;
        !          5851: }
        !          5852: 
        !          5853: static struct device *
        !          5854: unlink_modules(struct device *p)
        !          5855: {
        !          5856:     struct device *next = NULL;
        !          5857: 
        !          5858:     if (p->priv) {                          /* Private areas allocated?  */
        !          5859:        struct de4x5_private *lp = (struct de4x5_private *)p->priv;
        !          5860: 
        !          5861:        next = lp->next_module;
        !          5862:        if (lp->cache.buf) {                /* MAC buffers allocated?    */
        !          5863:            kfree(lp->cache.buf);           /* Free the MAC buffers      */
        !          5864:        }
        !          5865:        kfree(lp->cache.priv);              /* Free the private area     */
        !          5866:        release_region(p->base_addr, (lp->bus == PCI ? 
        !          5867:                                      DE4X5_PCI_TOTAL_SIZE :
        !          5868:                                      DE4X5_EISA_TOTAL_SIZE));
        !          5869:     }
        !          5870:     unregister_netdev(p);
        !          5871:     kfree(p);                               /* Free the device structure */
        !          5872:     
        !          5873:     return next;
        !          5874: }
        !          5875: 
        !          5876: static int
        !          5877: count_adapters(void)
        !          5878: {
        !          5879:     int i, j=0;
        !          5880:     u_char pb, dev_fn, dev_num;
        !          5881:     u_short dev_id, vendor;
        !          5882:     u_int class = DE4X5_CLASS_CODE;
        !          5883:     u_int device;
        !          5884: 
        !          5885: #if !defined(__sparc_v9__) && !defined(__powerpc__) && !defined(__alpha__)
        !          5886:     char name[DE4X5_STRLEN];
        !          5887:     u_long iobase = 0x1000;
        !          5888: 
        !          5889:     for (i=1; i<MAX_EISA_SLOTS; i++, iobase+=EISA_SLOT_INC) {
        !          5890:        if (EISA_signature(name, EISA_ID)) j++;
        !          5891:     }
        !          5892: #endif
        !          5893:     if (!pcibios_present()) return j;
        !          5894: 
        !          5895:     for (i=0; 
        !          5896:         (pcibios_find_class(class, i, &pb, &dev_fn)!= PCIBIOS_DEVICE_NOT_FOUND);
        !          5897:         i++) {
        !          5898:        dev_num = PCI_SLOT(dev_fn);
        !          5899:        device = 0;
        !          5900:        pcibios_read_config_word(pb, PCI_DEVICE, PCI_VENDOR_ID, &vendor);
        !          5901:        pcibios_read_config_word(pb, PCI_DEVICE, PCI_DEVICE_ID, &dev_id);
        !          5902:        device = dev_id;
        !          5903:        device <<= 8;
        !          5904:        if (is_DC21040 || is_DC21041 || is_DC21140 || is_DC2114x) j++;
        !          5905:     }
        !          5906: 
        !          5907:     return j;
        !          5908: }
        !          5909: 
        !          5910: /*
        !          5911: ** If at end of eth device list and can't use current entry, malloc
        !          5912: ** one up. If memory could not be allocated, print an error message.
        !          5913: */
        !          5914: __initfunc(static struct device *
        !          5915: insert_device(struct device *dev, u_long iobase, int (*init)(struct device *)))
        !          5916: {
        !          5917:     struct device *new;
        !          5918: 
        !          5919:     new = (struct device *)kmalloc(sizeof(struct device)+8, GFP_KERNEL);
        !          5920:     if (new == NULL) {
        !          5921:        printk("de4x5.c: Device not initialised, insufficient memory\n");
        !          5922:        return NULL;
        !          5923:     } else {
        !          5924:        memset((char *)new, 0, sizeof(struct device)+8);
        !          5925:        new->name = (char *)(new + 1);
        !          5926:        new->base_addr = iobase;       /* assign the io address */
        !          5927:        new->init = init;              /* initialisation routine */
        !          5928:     }
        !          5929: 
        !          5930:     return new;
        !          5931: }
        !          5932: 
        !          5933: #endif /* MODULE */
        !          5934: 
        !          5935: 
        !          5936: /*
        !          5937:  * Local variables:
        !          5938:  *  compile-command: "gcc -D__KERNEL__ -I/linux/include -Wall -Wstrict-prototypes -fomit-frame-pointer -fno-strength-reduce -malign-loops=2 -malign-jumps=2 -malign-functions=2 -O2 -m486 -c de4x5.c"
        !          5939:  *
        !          5940:  *  compile-command: "gcc -D__KERNEL__ -DMODULE -I/linux/include -Wall -Wstrict-prototypes -fomit-frame-pointer -fno-strength-reduce -malign-loops=2 -malign-jumps=2 -malign-functions=2 -O2 -m486 -c de4x5.c"
        !          5941:  * End:
        !          5942:  */

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