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Annotation of Gnu-Mach/linux/src/drivers/scsi/u14-34f.c, revision 1.1

1.1     ! root        1: /*
        !             2:  *      u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters.
        !             3:  *
        !             4:  *      26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111
        !             5:  *          Added command line option (et:[y|n]) to use the existing
        !             6:  *          translation (returned by scsicam_bios_param) as disk geometry.
        !             7:  *          The default is et:n, which uses the disk geometry jumpered
        !             8:  *          on the board.
        !             9:  *          The default value et:n is compatible with all previous revisions
        !            10:  *          of this driver.
        !            11:  *
        !            12:  *      28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104
        !            13:  *          Increased busy timeout from 10 msec. to 200 msec. while
        !            14:  *          processing interrupts.
        !            15:  *
        !            16:  *      18 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102
        !            17:  *          Improved abort handling during the eh recovery process.
        !            18:  *
        !            19:  *      13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101
        !            20:  *          The driver is now fully SMP safe, including the
        !            21:  *          abort and reset routines.
        !            22:  *          Added command line options (eh:[y|n]) to choose between
        !            23:  *          new_eh_code and the old scsi code.
        !            24:  *          If linux version >= 2.1.101 the default is eh:y, while the eh
        !            25:  *          option is ignored for previous releases and the old scsi code
        !            26:  *          is used.
        !            27:  *
        !            28:  *      18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97
        !            29:  *          Reworked interrupt handler.
        !            30:  *
        !            31:  *      11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95
        !            32:  *          Major reliability improvement: when a batch with overlapping
        !            33:  *          requests is detected, requests are queued one at a time
        !            34:  *          eliminating any possible board or drive reordering.
        !            35:  *
        !            36:  *      10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95
        !            37:  *          Improved SMP support (if linux version >= 2.1.95).
        !            38:  *
        !            39:  *       9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94
        !            40:  *          Performance improvement: when sequential i/o is detected,
        !            41:  *          always use direct sort instead of reverse sort.
        !            42:  *
        !            43:  *       4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
        !            44:  *          io_port is now unsigned long.
        !            45:  *
        !            46:  *      17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88
        !            47:  *          Use new scsi error handling code (if linux version >= 2.1.88).
        !            48:  *          Use new interrupt code.
        !            49:  *
        !            50:  *      12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55
        !            51:  *          Use of udelay inside the wait loops to avoid timeout
        !            52:  *          problems with fast cpus.
        !            53:  *          Removed check about useless calls to the interrupt service
        !            54:  *          routine (reported on SMP systems only).
        !            55:  *          At initialization time "sorted/unsorted" is displayed instead
        !            56:  *          of "linked/unlinked" to reinforce the fact that "linking" is
        !            57:  *          nothing but "elevator sorting" in the actual implementation.
        !            58:  *
        !            59:  *      17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38
        !            60:  *          Use of serial_number_at_timeout in abort and reset processing.
        !            61:  *          Use of the __initfunc and __initdata macro in setup code.
        !            62:  *          Minor cleanups in the list_statistics code.
        !            63:  *
        !            64:  *      24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26
        !            65:  *          When loading as a module, parameter passing is now supported
        !            66:  *          both in 2.0 and in 2.1 style.
        !            67:  *          Fixed data transfer direction for some SCSI opcodes.
        !            68:  *          Immediate acknowledge to request sense commands.
        !            69:  *          Linked commands to each disk device are now reordered by elevator
        !            70:  *          sorting. Rare cases in which reordering of write requests could
        !            71:  *          cause wrong results are managed.
        !            72:  *
        !            73:  *      18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28
        !            74:  *          Added command line options to enable/disable linked commands
        !            75:  *          (lc:[y|n]), old firmware support (of:[y|n]) and to set the max
        !            76:  *          queue depth (mq:xx). Default is "u14-34f=lc:n,of:n,mq:8".
        !            77:  *          Improved command linking.
        !            78:  *
        !            79:  *       8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27
        !            80:  *          Added linked command support.
        !            81:  *
        !            82:  *       3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27
        !            83:  *          Added queue depth adjustment.
        !            84:  *
        !            85:  *      22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26
        !            86:  *          The list of i/o ports to be probed can be overwritten by the
        !            87:  *          "u14-34f=port0,port1,...." boot command line option.
        !            88:  *          Scatter/gather lists are now allocated by a number of kmalloc
        !            89:  *          calls, in order to avoid the previous size limit of 64Kb.
        !            90:  *
        !            91:  *      16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25
        !            92:  *          Added multichannel support.
        !            93:  *
        !            94:  *      27 Sep 1996 rev. 2.12 for linux 2.1.0
        !            95:  *          Portability cleanups (virtual/bus addressing, little/big endian
        !            96:  *          support).
        !            97:  *
        !            98:  *      09 Jul 1996 rev. 2.11 for linux 2.0.4
        !            99:  *          "Data over/under-run" no longer implies a redo on all targets.
        !           100:  *          Number of internal retries is now limited.
        !           101:  *
        !           102:  *      16 Apr 1996 rev. 2.10 for linux 1.3.90
        !           103:  *          New argument "reset_flags" to the reset routine.
        !           104:  *
        !           105:  *      21 Jul 1995 rev. 2.02 for linux 1.3.11
        !           106:  *          Fixed Data Transfer Direction for some SCSI commands.
        !           107:  *
        !           108:  *      13 Jun 1995 rev. 2.01 for linux 1.2.10
        !           109:  *          HAVE_OLD_UX4F_FIRMWARE should be defined for U34F boards when
        !           110:  *          the firmware prom is not the latest one (28008-006).
        !           111:  *
        !           112:  *      11 Mar 1995 rev. 2.00 for linux 1.2.0
        !           113:  *          Fixed a bug which prevented media change detection for removable
        !           114:  *          disk drives.
        !           115:  *
        !           116:  *      23 Feb 1995 rev. 1.18 for linux 1.1.94
        !           117:  *          Added a check for scsi_register returning NULL.
        !           118:  *
        !           119:  *      11 Feb 1995 rev. 1.17 for linux 1.1.91
        !           120:  *          U14F qualified to run with 32 sglists.
        !           121:  *          Now DEBUG_RESET is disabled by default.
        !           122:  *
        !           123:  *       9 Feb 1995 rev. 1.16 for linux 1.1.90
        !           124:  *          Use host->wish_block instead of host->block.
        !           125:  *
        !           126:  *       8 Feb 1995 rev. 1.15 for linux 1.1.89
        !           127:  *          Cleared target_time_out counter while performing a reset.
        !           128:  *
        !           129:  *      28 Jan 1995 rev. 1.14 for linux 1.1.86
        !           130:  *          Added module support.
        !           131:  *          Log and do a retry when a disk drive returns a target status
        !           132:  *          different from zero on a recovered error.
        !           133:  *          Auto detects if U14F boards have an old firmware revision.
        !           134:  *          Max number of scatter/gather lists set to 16 for all boards
        !           135:  *          (most installation run fine using 33 sglists, while other
        !           136:  *          has problems when using more then 16).
        !           137:  *
        !           138:  *      16 Jan 1995 rev. 1.13 for linux 1.1.81
        !           139:  *          Display a message if check_region detects a port address
        !           140:  *          already in use.
        !           141:  *
        !           142:  *      15 Dec 1994 rev. 1.12 for linux 1.1.74
        !           143:  *          The host->block flag is set for all the detected ISA boards.
        !           144:  *
        !           145:  *      30 Nov 1994 rev. 1.11 for linux 1.1.68
        !           146:  *          Redo i/o on target status CHECK_CONDITION for TYPE_DISK only.
        !           147:  *          Added optional support for using a single board at a time.
        !           148:  *
        !           149:  *      14 Nov 1994 rev. 1.10 for linux 1.1.63
        !           150:  *
        !           151:  *      28 Oct 1994 rev. 1.09 for linux 1.1.58  Final BETA release.
        !           152:  *      16 Jul 1994 rev. 1.00 for linux 1.1.29  Initial ALPHA release.
        !           153:  *
        !           154:  *          This driver is a total replacement of the original UltraStor
        !           155:  *          scsi driver, but it supports ONLY the 14F and 34F boards.
        !           156:  *          It can be configured in the same kernel in which the original
        !           157:  *          ultrastor driver is configured to allow the original U24F
        !           158:  *          support.
        !           159:  *
        !           160:  *          Multiple U14F and/or U34F host adapters are supported.
        !           161:  *
        !           162:  *  Copyright (C) 1994-1998 Dario Ballabio ([email protected])
        !           163:  *
        !           164:  *  Redistribution and use in source and binary forms, with or without
        !           165:  *  modification, are permitted provided that redistributions of source
        !           166:  *  code retain the above copyright notice and this comment without
        !           167:  *  modification.
        !           168:  *
        !           169:  *      WARNING: if your 14/34F board has an old firmware revision (see below)
        !           170:  *               you must change "#undef" into "#define" in the following
        !           171:  *               statement.
        !           172:  */
        !           173: #undef HAVE_OLD_UX4F_FIRMWARE
        !           174: /*
        !           175:  *  The UltraStor 14F, 24F, and 34F are a family of intelligent, high
        !           176:  *  performance SCSI-2 host adapters.
        !           177:  *  Here is the scoop on the various models:
        !           178:  *
        !           179:  *  14F - ISA first-party DMA HA with floppy support and WD1003 emulation.
        !           180:  *  24F - EISA Bus Master HA with floppy support and WD1003 emulation.
        !           181:  *  34F - VESA Local-Bus Bus Master HA (no WD1003 emulation).
        !           182:  *
        !           183:  *  This code has been tested with up to two U14F boards, using both
        !           184:  *  firmware 28004-005/38004-004 (BIOS rev. 2.00) and the latest firmware
        !           185:  *  28004-006/38004-005 (BIOS rev. 2.01).
        !           186:  *
        !           187:  *  The latest firmware is required in order to get reliable operations when
        !           188:  *  clustering is enabled. ENABLE_CLUSTERING provides a performance increase
        !           189:  *  up to 50% on sequential access.
        !           190:  *
        !           191:  *  Since the Scsi_Host_Template structure is shared among all 14F and 34F,
        !           192:  *  the last setting of use_clustering is in effect for all of these boards.
        !           193:  *
        !           194:  *  Here a sample configuration using two U14F boards:
        !           195:  *
        !           196:  U14F0: ISA 0x330, BIOS 0xc8000, IRQ 11, DMA 5, SG 32, MB 16, of:n, lc:y, mq:8.
        !           197:  U14F1: ISA 0x340, BIOS 0x00000, IRQ 10, DMA 6, SG 32, MB 16, of:n, lc:y, mq:8.
        !           198:  *
        !           199:  *  The boot controller must have its BIOS enabled, while other boards can
        !           200:  *  have their BIOS disabled, or enabled to an higher address.
        !           201:  *  Boards are named Ux4F0, Ux4F1..., according to the port address order in
        !           202:  *  the io_port[] array.
        !           203:  *
        !           204:  *  The following facts are based on real testing results (not on
        !           205:  *  documentation) on the above U14F board.
        !           206:  *
        !           207:  *  - The U14F board should be jumpered for bus on time less or equal to 7
        !           208:  *    microseconds, while the default is 11 microseconds. This is order to
        !           209:  *    get acceptable performance while using floppy drive and hard disk
        !           210:  *    together. The jumpering for 7 microseconds is: JP13 pin 15-16,
        !           211:  *    JP14 pin 7-8 and pin 9-10.
        !           212:  *    The reduction has a little impact on scsi performance.
        !           213:  *
        !           214:  *  - If scsi bus length exceeds 3m., the scsi bus speed needs to be reduced
        !           215:  *    from 10Mhz to 5Mhz (do this by inserting a jumper on JP13 pin 7-8).
        !           216:  *
        !           217:  *  - If U14F on board firmware is older than 28004-006/38004-005,
        !           218:  *    the U14F board is unable to provide reliable operations if the scsi
        !           219:  *    request length exceeds 16Kbyte. When this length is exceeded the
        !           220:  *    behavior is:
        !           221:  *    - adapter_status equal 0x96 or 0xa3 or 0x93 or 0x94;
        !           222:  *    - adapter_status equal 0 and target_status equal 2 on for all targets
        !           223:  *      in the next operation following the reset.
        !           224:  *    This sequence takes a long time (>3 seconds), so in the meantime
        !           225:  *    the SD_TIMEOUT in sd.c could expire giving rise to scsi aborts
        !           226:  *    (SD_TIMEOUT has been increased from 3 to 6 seconds in 1.1.31).
        !           227:  *    Because of this I had to DISABLE_CLUSTERING and to work around the
        !           228:  *    bus reset in the interrupt service routine, returning DID_BUS_BUSY
        !           229:  *    so that the operations are retried without complains from the scsi.c
        !           230:  *    code.
        !           231:  *    Any reset of the scsi bus is going to kill tape operations, since
        !           232:  *    no retry is allowed for tapes. Bus resets are more likely when the
        !           233:  *    scsi bus is under heavy load.
        !           234:  *    Requests using scatter/gather have a maximum length of 16 x 1024 bytes
        !           235:  *    when DISABLE_CLUSTERING is in effect, but unscattered requests could be
        !           236:  *    larger than 16Kbyte.
        !           237:  *
        !           238:  *    The new firmware has fixed all the above problems.
        !           239:  *
        !           240:  *  For U34F boards the latest bios prom is 38008-002 (BIOS rev. 2.01),
        !           241:  *  the latest firmware prom is 28008-006. Older firmware 28008-005 has
        !           242:  *  problems when using more then 16 scatter/gather lists.
        !           243:  *
        !           244:  *  The list of i/o ports to be probed can be totally replaced by the
        !           245:  *  boot command line option: "u14-34f=port0,port1,port2,...", where the
        !           246:  *  port0, port1... arguments are ISA/VESA addresses to be probed.
        !           247:  *  For example using "u14-34f=0x230,0x340", the driver probes only the two
        !           248:  *  addresses 0x230 and 0x340 in this order; "u14-34f=0" totally disables
        !           249:  *  this driver.
        !           250:  *
        !           251:  *  After the optional list of detection probes, other possible command line
        !           252:  *  options are:
        !           253:  *
        !           254:  *  eh:y  use new scsi code (linux 2.2 only);
        !           255:  *  eh:n  use old scsi code;
        !           256:  *  et:y  use disk geometry returned by scsicam_bios_param;
        !           257:  *  et:n  use disk geometry jumpered on the board;
        !           258:  *  lc:y  enables linked commands;
        !           259:  *  lc:n  disables linked commands;
        !           260:  *  of:y  enables old firmware support;
        !           261:  *  of:n  disables old firmware support;
        !           262:  *  mq:xx set the max queue depth to the value xx (2 <= xx <= 8).
        !           263:  *
        !           264:  *  The default value is: "u14-34f=lc:n,of:n,mq:8,et:n".
        !           265:  *  An example using the list of detection probes could be:
        !           266:  *  "u14-34f=0x230,0x340,lc:y,of:n,mq:4,eh:n,et:n".
        !           267:  *
        !           268:  *  When loading as a module, parameters can be specified as well.
        !           269:  *  The above example would be (use 1 in place of y and 0 in place of n):
        !           270:  *
        !           271:  *  modprobe u14-34f io_port=0x230,0x340 linked_comm=1 have_old_firmware=0 \
        !           272:  *                max_queue_depth=4 use_new_eh_code=0 ext_tran=0
        !           273:  *
        !           274:  *  ----------------------------------------------------------------------------
        !           275:  *  In this implementation, linked commands are designed to work with any DISK
        !           276:  *  or CD-ROM, since this linking has only the intent of clustering (time-wise)
        !           277:  *  and reordering by elevator sorting commands directed to each device,
        !           278:  *  without any relation with the actual SCSI protocol between the controller
        !           279:  *  and the device.
        !           280:  *  If Q is the queue depth reported at boot time for each device (also named
        !           281:  *  cmds/lun) and Q > 2, whenever there is already an active command to the
        !           282:  *  device all other commands to the same device  (up to Q-1) are kept waiting
        !           283:  *  in the elevator sorting queue. When the active command completes, the
        !           284:  *  commands in this queue are sorted by sector address. The sort is chosen
        !           285:  *  between increasing or decreasing by minimizing the seek distance between
        !           286:  *  the sector of the commands just completed and the sector of the first
        !           287:  *  command in the list to be sorted.
        !           288:  *  Trivial math assures that the unsorted average seek distance when doing
        !           289:  *  random seeks over S sectors is S/3.
        !           290:  *  When (Q-1) requests are uniformly distributed over S sectors, the average
        !           291:  *  distance between two adjacent requests is S/((Q-1) + 1), so the sorted
        !           292:  *  average seek distance for (Q-1) random requests over S sectors is S/Q.
        !           293:  *  The elevator sorting hence divides the seek distance by a factor Q/3.
        !           294:  *  The above pure geometric remarks are valid in all cases and the
        !           295:  *  driver effectively reduces the seek distance by the predicted factor
        !           296:  *  when there are Q concurrent read i/o operations on the device, but this
        !           297:  *  does not necessarily results in a noticeable performance improvement:
        !           298:  *  your mileage may vary....
        !           299:  *
        !           300:  *  Note: command reordering inside a batch of queued commands could cause
        !           301:  *        wrong results only if there is at least one write request and the
        !           302:  *        intersection (sector-wise) of all requests is not empty.
        !           303:  *        When the driver detects a batch including overlapping requests
        !           304:  *        (a really rare event) strict serial (pid) order is enforced.
        !           305:  *  ----------------------------------------------------------------------------
        !           306:  *
        !           307:  *  The boards are named Ux4F0, Ux4F1,... according to the detection order.
        !           308:  *
        !           309:  *  In order to support multiple ISA boards in a reliable way,
        !           310:  *  the driver sets host->wish_block = TRUE for all ISA boards.
        !           311:  */
        !           312: 
        !           313: #include <linux/version.h>
        !           314: 
        !           315: #define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s))
        !           316: #define MAX_INT_PARAM 10
        !           317: 
        !           318: #if defined(MODULE)
        !           319: #include <linux/module.h>
        !           320: 
        !           321: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,26)
        !           322: MODULE_PARM(io_port, "1-" __MODULE_STRING(MAX_INT_PARAM) "i");
        !           323: MODULE_PARM(linked_comm, "i");
        !           324: MODULE_PARM(have_old_firmware, "i");
        !           325: MODULE_PARM(link_statistics, "i");
        !           326: MODULE_PARM(max_queue_depth, "i");
        !           327: MODULE_PARM(use_new_eh_code, "i");
        !           328: MODULE_PARM(ext_tran, "i");
        !           329: MODULE_AUTHOR("Dario Ballabio");
        !           330: #endif
        !           331: 
        !           332: #endif
        !           333: 
        !           334: #include <linux/string.h>
        !           335: #include <linux/sched.h>
        !           336: #include <linux/kernel.h>
        !           337: #include <linux/ioport.h>
        !           338: #include <linux/delay.h>
        !           339: #include <asm/io.h>
        !           340: #include <asm/system.h>
        !           341: #include <asm/byteorder.h>
        !           342: #include <linux/proc_fs.h>
        !           343: #include <linux/blk.h>
        !           344: #include "scsi.h"
        !           345: #include "hosts.h"
        !           346: #include "sd.h"
        !           347: #include <asm/dma.h>
        !           348: #include <asm/irq.h>
        !           349: #include "u14-34f.h"
        !           350: #include <linux/stat.h>
        !           351: #include <linux/config.h>
        !           352: 
        !           353: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,36)
        !           354: #include <linux/init.h>
        !           355: #else
        !           356: #define __initfunc(A) A
        !           357: #define __initdata
        !           358: #define __init
        !           359: #endif
        !           360: 
        !           361: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101)
        !           362: #include <asm/spinlock.h>
        !           363: #define IRQ_FLAGS
        !           364: #define IRQ_LOCK
        !           365: #define IRQ_LOCK_SAVE
        !           366: #define IRQ_UNLOCK
        !           367: #define IRQ_UNLOCK_RESTORE
        !           368: #define SPIN_FLAGS unsigned long spin_flags;
        !           369: #define SPIN_LOCK spin_lock_irq(&io_request_lock);
        !           370: #define SPIN_LOCK_SAVE spin_lock_irqsave(&io_request_lock, spin_flags);
        !           371: #define SPIN_UNLOCK spin_unlock_irq(&io_request_lock);
        !           372: #define SPIN_UNLOCK_RESTORE \
        !           373:                   spin_unlock_irqrestore(&io_request_lock, spin_flags);
        !           374: static int use_new_eh_code = TRUE;
        !           375: #else
        !           376: #define IRQ_FLAGS unsigned long irq_flags;
        !           377: #define IRQ_LOCK cli();
        !           378: #define IRQ_LOCK_SAVE do {save_flags(irq_flags); cli();} while (0);
        !           379: #define IRQ_UNLOCK sti();
        !           380: #define IRQ_UNLOCK_RESTORE do {restore_flags(irq_flags);} while (0);
        !           381: #define SPIN_FLAGS
        !           382: #define SPIN_LOCK
        !           383: #define SPIN_LOCK_SAVE
        !           384: #define SPIN_UNLOCK
        !           385: #define SPIN_UNLOCK_RESTORE
        !           386: static int use_new_eh_code = FALSE;
        !           387: #endif
        !           388: 
        !           389: struct proc_dir_entry proc_scsi_u14_34f = {
        !           390:     PROC_SCSI_U14_34F, 6, "u14_34f",
        !           391:     S_IFDIR | S_IRUGO | S_IXUGO, 2
        !           392: };
        !           393: 
        !           394: /* Values for the PRODUCT_ID ports for the 14/34F */
        !           395: #define PRODUCT_ID1  0x56
        !           396: #define PRODUCT_ID2  0x40        /* NOTE: Only upper nibble is used */
        !           397: 
        !           398: /* Subversion values */
        !           399: #define ISA  0
        !           400: #define ESA 1
        !           401: 
        !           402: #define OP_HOST_ADAPTER   0x1
        !           403: #define OP_SCSI           0x2
        !           404: #define OP_RESET          0x4
        !           405: #define DTD_SCSI          0x0
        !           406: #define DTD_IN            0x1
        !           407: #define DTD_OUT           0x2
        !           408: #define DTD_NONE          0x3
        !           409: #define HA_CMD_INQUIRY    0x1
        !           410: #define HA_CMD_SELF_DIAG  0x2
        !           411: #define HA_CMD_READ_BUFF  0x3
        !           412: #define HA_CMD_WRITE_BUFF 0x4
        !           413: 
        !           414: #undef  DEBUG_LINKED_COMMANDS
        !           415: #undef  DEBUG_DETECT
        !           416: #undef  DEBUG_INTERRUPT
        !           417: #undef  DEBUG_RESET
        !           418: #undef  DEBUG_GENERATE_ERRORS
        !           419: #undef  DEBUG_GENERATE_ABORTS
        !           420: #undef  DEBUG_GEOMETRY
        !           421: 
        !           422: #define MAX_ISA 3
        !           423: #define MAX_VESA 1
        !           424: #define MAX_EISA 0
        !           425: #define MAX_PCI 0
        !           426: #define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
        !           427: #define MAX_CHANNEL 1
        !           428: #define MAX_LUN 8
        !           429: #define MAX_TARGET 8
        !           430: #define MAX_MAILBOXES 16
        !           431: #define MAX_SGLIST 32
        !           432: #define MAX_SAFE_SGLIST 16
        !           433: #define MAX_INTERNAL_RETRIES 64
        !           434: #define MAX_CMD_PER_LUN 2
        !           435: #define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN)
        !           436: 
        !           437: #define SKIP ULONG_MAX
        !           438: #define FALSE 0
        !           439: #define TRUE 1
        !           440: #define FREE 0
        !           441: #define IN_USE   1
        !           442: #define LOCKED   2
        !           443: #define IN_RESET 3
        !           444: #define IGNORE   4
        !           445: #define READY    5
        !           446: #define ABORTING 6
        !           447: #define NO_DMA  0xff
        !           448: #define MAXLOOP  10000
        !           449: 
        !           450: #define REG_LCL_MASK      0
        !           451: #define REG_LCL_INTR      1
        !           452: #define REG_SYS_MASK      2
        !           453: #define REG_SYS_INTR      3
        !           454: #define REG_PRODUCT_ID1   4
        !           455: #define REG_PRODUCT_ID2   5
        !           456: #define REG_CONFIG1       6
        !           457: #define REG_CONFIG2       7
        !           458: #define REG_OGM           8
        !           459: #define REG_ICM           12
        !           460: #define REGION_SIZE       13
        !           461: #define BSY_ASSERTED      0x01
        !           462: #define IRQ_ASSERTED      0x01
        !           463: #define CMD_RESET         0xc0
        !           464: #define CMD_OGM_INTR      0x01
        !           465: #define CMD_CLR_INTR      0x01
        !           466: #define CMD_ENA_INTR      0x81
        !           467: #define ASOK              0x00
        !           468: #define ASST              0x91
        !           469: 
        !           470: #define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr)[0])
        !           471: #define YESNO(a) ((a) ? 'y' : 'n')
        !           472: #define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM)
        !           473: 
        !           474: #define PACKED          __attribute__((packed))
        !           475: 
        !           476: struct sg_list {
        !           477:    unsigned int address;                /* Segment Address */
        !           478:    unsigned int num_bytes;              /* Segment Length */
        !           479:    };
        !           480: 
        !           481: /* MailBox SCSI Command Packet */
        !           482: struct mscp {
        !           483:    unsigned char opcode: 3;             /* type of command */
        !           484:    unsigned char xdir: 2;               /* data transfer direction */
        !           485:    unsigned char dcn: 1;                /* disable disconnect */
        !           486:    unsigned char ca: 1;                 /* use cache (if available) */
        !           487:    unsigned char sg: 1;                 /* scatter/gather operation */
        !           488:    unsigned char target: 3;             /* SCSI target id */
        !           489:    unsigned char channel: 2;            /* SCSI channel number */
        !           490:    unsigned char lun: 3;                /* SCSI logical unit number */
        !           491:    unsigned int data_address PACKED;    /* transfer data pointer */
        !           492:    unsigned int data_len PACKED;        /* length in bytes */
        !           493:    unsigned int link_address PACKED;    /* for linking command chains */
        !           494:    unsigned char clink_id;              /* identifies command in chain */
        !           495:    unsigned char use_sg;                /* (if sg is set) 8 bytes per list */
        !           496:    unsigned char sense_len;
        !           497:    unsigned char scsi_cdbs_len;         /* 6, 10, or 12 */
        !           498:    unsigned char scsi_cdbs[12];         /* SCSI commands */
        !           499:    unsigned char adapter_status;        /* non-zero indicates HA error */
        !           500:    unsigned char target_status;         /* non-zero indicates target error */
        !           501:    unsigned int sense_addr PACKED;
        !           502:    Scsi_Cmnd *SCpnt;
        !           503:    unsigned int index;                  /* cp index */
        !           504:    struct sg_list *sglist;
        !           505:    };
        !           506: 
        !           507: struct hostdata {
        !           508:    struct mscp cp[MAX_MAILBOXES];       /* Mailboxes for this board */
        !           509:    unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */
        !           510:    unsigned int last_cp_used;           /* Index of last mailbox used */
        !           511:    unsigned int iocount;                /* Total i/o done for this board */
        !           512:    int board_number;                    /* Number of this board */
        !           513:    char board_name[16];                 /* Name of this board */
        !           514:    char board_id[256];                  /* data from INQUIRY on this board */
        !           515:    int in_reset;                        /* True if board is doing a reset */
        !           516:    int target_to[MAX_TARGET][MAX_CHANNEL]; /* N. of timeout errors on target */
        !           517:    int target_redo[MAX_TARGET][MAX_CHANNEL]; /* If TRUE redo i/o on target */
        !           518:    unsigned int retries;                /* Number of internal retries */
        !           519:    unsigned long last_retried_pid;      /* Pid of last retried command */
        !           520:    unsigned char subversion;            /* Bus type, either ISA or ESA */
        !           521:    unsigned char heads;
        !           522:    unsigned char sectors;
        !           523: 
        !           524:    /* slot != 0 for the U24F, slot == 0 for both the U14F and U34F */
        !           525:    unsigned char slot;
        !           526:    };
        !           527: 
        !           528: static struct Scsi_Host *sh[MAX_BOARDS + 1];
        !           529: static const char *driver_name = "Ux4F";
        !           530: static char sha[MAX_BOARDS];
        !           531: 
        !           532: /* Initialize num_boards so that ihdlr can work while detect is in progress */
        !           533: static unsigned int num_boards = MAX_BOARDS;
        !           534: 
        !           535: static unsigned long io_port[] __initdata = {
        !           536: 
        !           537:    /* Space for MAX_INT_PARAM ports usable while loading as a module */
        !           538:    SKIP,    SKIP,   SKIP,   SKIP,   SKIP,   SKIP,   SKIP,   SKIP,
        !           539:    SKIP,    SKIP,
        !           540: 
        !           541:    /* Possible ISA/VESA ports */
        !           542:    0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140,
        !           543: 
        !           544:    /* End of list */
        !           545:    0x0
        !           546:    };
        !           547: 
        !           548: #define HD(board) ((struct hostdata *) &sh[board]->hostdata)
        !           549: #define BN(board) (HD(board)->board_name)
        !           550: 
        !           551: #define SWAP_BYTE(x) ((unsigned long)( \
        !           552:         (((unsigned long)(x) & 0x000000ffU) << 24) | \
        !           553:         (((unsigned long)(x) & 0x0000ff00U) <<  8) | \
        !           554:         (((unsigned long)(x) & 0x00ff0000U) >>  8) | \
        !           555:         (((unsigned long)(x) & 0xff000000U) >> 24)))
        !           556: 
        !           557: #if defined(__BIG_ENDIAN)
        !           558: #define H2DEV(x) SWAP_BYTE(x)
        !           559: #else
        !           560: #define H2DEV(x) (x)
        !           561: #endif
        !           562: 
        !           563: #define DEV2H(x) H2DEV(x)
        !           564: #define V2DEV(addr) ((addr) ? H2DEV(virt_to_bus((void *)addr)) : 0)
        !           565: #define DEV2V(addr) ((addr) ? DEV2H(bus_to_virt((unsigned long)addr)) : 0)
        !           566: 
        !           567: static void do_interrupt_handler(int, void *, struct pt_regs *);
        !           568: static void flush_dev(Scsi_Device *, unsigned long, unsigned int, unsigned int);
        !           569: static int do_trace = FALSE;
        !           570: static int setup_done = FALSE;
        !           571: static int link_statistics = 0;
        !           572: static int ext_tran = FALSE;
        !           573: 
        !           574: #if defined(HAVE_OLD_UX4F_FIRMWARE)
        !           575: static int have_old_firmware = TRUE;
        !           576: #else
        !           577: static int have_old_firmware = FALSE;
        !           578: #endif
        !           579: 
        !           580: #if defined(CONFIG_SCSI_U14_34F_LINKED_COMMANDS)
        !           581: static int linked_comm = TRUE;
        !           582: #else
        !           583: static int linked_comm = FALSE;
        !           584: #endif
        !           585: 
        !           586: #if defined(CONFIG_SCSI_U14_34F_MAX_TAGS)
        !           587: static int max_queue_depth = CONFIG_SCSI_U14_34F_MAX_TAGS;
        !           588: #else
        !           589: static int max_queue_depth = MAX_CMD_PER_LUN;
        !           590: #endif
        !           591: 
        !           592: static void select_queue_depths(struct Scsi_Host *host, Scsi_Device *devlist) {
        !           593:    Scsi_Device *dev;
        !           594:    int j, ntag = 0, nuntag = 0, tqd, utqd;
        !           595:    IRQ_FLAGS
        !           596: 
        !           597:    IRQ_LOCK_SAVE
        !           598:    j = ((struct hostdata *) host->hostdata)->board_number;
        !           599: 
        !           600:    for(dev = devlist; dev; dev = dev->next) {
        !           601: 
        !           602:       if (dev->host != host) continue;
        !           603: 
        !           604:       if (TLDEV(dev->type) && (dev->tagged_supported || linked_comm))
        !           605:          ntag++;
        !           606:       else
        !           607:          nuntag++;
        !           608:       }
        !           609: 
        !           610:    utqd = MAX_CMD_PER_LUN;
        !           611: 
        !           612:    tqd = (host->can_queue - utqd * nuntag) / (ntag ? ntag : 1);
        !           613: 
        !           614:    if (tqd > max_queue_depth) tqd = max_queue_depth;
        !           615: 
        !           616:    if (tqd < MAX_CMD_PER_LUN) tqd = MAX_CMD_PER_LUN;
        !           617: 
        !           618:    for(dev = devlist; dev; dev = dev->next) {
        !           619:       char *tag_suffix = "", *link_suffix = "";
        !           620: 
        !           621:       if (dev->host != host) continue;
        !           622: 
        !           623:       if (TLDEV(dev->type) && (dev->tagged_supported || linked_comm))
        !           624:          dev->queue_depth = tqd;
        !           625:       else
        !           626:          dev->queue_depth = utqd;
        !           627: 
        !           628:       if (TLDEV(dev->type)) {
        !           629:          if (linked_comm && dev->queue_depth > 2)
        !           630:             link_suffix = ", sorted";
        !           631:          else
        !           632:             link_suffix = ", unsorted";
        !           633:          }
        !           634: 
        !           635:       if (dev->tagged_supported && TLDEV(dev->type) && dev->tagged_queue)
        !           636:          tag_suffix = ", tagged";
        !           637:       else if (dev->tagged_supported && TLDEV(dev->type))
        !           638:          tag_suffix = ", untagged";
        !           639: 
        !           640:       printk("%s: scsi%d, channel %d, id %d, lun %d, cmds/lun %d%s%s.\n",
        !           641:              BN(j), host->host_no, dev->channel, dev->id, dev->lun,
        !           642:              dev->queue_depth, link_suffix, tag_suffix);
        !           643:       }
        !           644: 
        !           645:    IRQ_UNLOCK_RESTORE
        !           646:    return;
        !           647: }
        !           648: 
        !           649: static inline int wait_on_busy(unsigned long iobase, unsigned int loop) {
        !           650: 
        !           651:    while (inb(iobase + REG_LCL_INTR) & BSY_ASSERTED) {
        !           652:       udelay(1L);
        !           653:       if (--loop == 0) return TRUE;
        !           654:       }
        !           655: 
        !           656:    return FALSE;
        !           657: }
        !           658: 
        !           659: static int board_inquiry(unsigned int j) {
        !           660:    struct mscp *cpp;
        !           661:    unsigned int time, limit = 0;
        !           662: 
        !           663:    cpp = &HD(j)->cp[0];
        !           664:    memset(cpp, 0, sizeof(struct mscp));
        !           665:    cpp->opcode = OP_HOST_ADAPTER;
        !           666:    cpp->xdir = DTD_IN;
        !           667:    cpp->data_address = V2DEV(HD(j)->board_id);
        !           668:    cpp->data_len = H2DEV(sizeof(HD(j)->board_id));
        !           669:    cpp->scsi_cdbs_len = 6;
        !           670:    cpp->scsi_cdbs[0] = HA_CMD_INQUIRY;
        !           671: 
        !           672:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !           673:       printk("%s: board_inquiry, adapter busy.\n", BN(j));
        !           674:       return TRUE;
        !           675:       }
        !           676: 
        !           677:    HD(j)->cp_stat[0] = IGNORE;
        !           678: 
        !           679:    /* Clear the interrupt indication */
        !           680:    outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
        !           681: 
        !           682:    /* Store pointer in OGM address bytes */
        !           683:    outl(V2DEV(cpp), sh[j]->io_port + REG_OGM);
        !           684: 
        !           685:    /* Issue OGM interrupt */
        !           686:    outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
        !           687: 
        !           688:    SPIN_UNLOCK
        !           689:    IRQ_UNLOCK
        !           690:    time = jiffies;
        !           691:    while ((jiffies - time) < HZ && limit++ < 20000) udelay(100L);
        !           692:    IRQ_LOCK
        !           693:    SPIN_LOCK
        !           694: 
        !           695:    if (cpp->adapter_status || HD(j)->cp_stat[0] != FREE) {
        !           696:       HD(j)->cp_stat[0] = FREE;
        !           697:       printk("%s: board_inquiry, err 0x%x.\n", BN(j), cpp->adapter_status);
        !           698:       return TRUE;
        !           699:       }
        !           700: 
        !           701:    return FALSE;
        !           702: }
        !           703: 
        !           704: __initfunc (static inline int port_detect \
        !           705:       (unsigned long port_base, unsigned int j, Scsi_Host_Template *tpnt)) {
        !           706:    unsigned char irq, dma_channel, subversion, i;
        !           707:    unsigned char in_byte;
        !           708:    char *bus_type, dma_name[16];
        !           709: 
        !           710:    /* Allowed BIOS base addresses (NULL indicates reserved) */
        !           711:    void *bios_segment_table[8] = {
        !           712:       NULL,
        !           713:       (void *) 0xc4000, (void *) 0xc8000, (void *) 0xcc000, (void *) 0xd0000,
        !           714:       (void *) 0xd4000, (void *) 0xd8000, (void *) 0xdc000
        !           715:       };
        !           716: 
        !           717:    /* Allowed IRQs */
        !           718:    unsigned char interrupt_table[4] = { 15, 14, 11, 10 };
        !           719: 
        !           720:    /* Allowed DMA channels for ISA (0 indicates reserved) */
        !           721:    unsigned char dma_channel_table[4] = { 5, 6, 7, 0 };
        !           722: 
        !           723:    /* Head/sector mappings */
        !           724:    struct {
        !           725:       unsigned char heads;
        !           726:       unsigned char sectors;
        !           727:       } mapping_table[4] = {
        !           728:            { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 }
        !           729:            };
        !           730: 
        !           731:    struct config_1 {
        !           732:       unsigned char bios_segment: 3;
        !           733:       unsigned char removable_disks_as_fixed: 1;
        !           734:       unsigned char interrupt: 2;
        !           735:       unsigned char dma_channel: 2;
        !           736:       } config_1;
        !           737: 
        !           738:    struct config_2 {
        !           739:       unsigned char ha_scsi_id: 3;
        !           740:       unsigned char mapping_mode: 2;
        !           741:       unsigned char bios_drive_number: 1;
        !           742:       unsigned char tfr_port: 2;
        !           743:       } config_2;
        !           744: 
        !           745:    char name[16];
        !           746: 
        !           747:    sprintf(name, "%s%d", driver_name, j);
        !           748: 
        !           749:    if(check_region(port_base, REGION_SIZE)) {
        !           750:       printk("%s: address 0x%03lx in use, skipping probe.\n", name, port_base);
        !           751:       return FALSE;
        !           752:       }
        !           753: 
        !           754:    if (inb(port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) return FALSE;
        !           755: 
        !           756:    in_byte = inb(port_base + REG_PRODUCT_ID2);
        !           757: 
        !           758:    if ((in_byte & 0xf0) != PRODUCT_ID2) return FALSE;
        !           759: 
        !           760:    *(char *)&config_1 = inb(port_base + REG_CONFIG1);
        !           761:    *(char *)&config_2 = inb(port_base + REG_CONFIG2);
        !           762: 
        !           763:    irq = interrupt_table[config_1.interrupt];
        !           764:    dma_channel = dma_channel_table[config_1.dma_channel];
        !           765:    subversion = (in_byte & 0x0f);
        !           766: 
        !           767:    /* Board detected, allocate its IRQ */
        !           768:    if (request_irq(irq, do_interrupt_handler,
        !           769:              SA_INTERRUPT | ((subversion == ESA) ? SA_SHIRQ : 0),
        !           770:              driver_name, (void *) &sha[j])) {
        !           771:       printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq);
        !           772:       return FALSE;
        !           773:       }
        !           774: 
        !           775:    if (subversion == ISA && request_dma(dma_channel, driver_name)) {
        !           776:       printk("%s: unable to allocate DMA channel %u, detaching.\n",
        !           777:              name, dma_channel);
        !           778:       free_irq(irq, &sha[j]);
        !           779:       return FALSE;
        !           780:       }
        !           781: 
        !           782:    if (have_old_firmware) tpnt->use_clustering = DISABLE_CLUSTERING;
        !           783: 
        !           784: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101)
        !           785:    tpnt->use_new_eh_code = use_new_eh_code;
        !           786: #else
        !           787:    use_new_eh_code = FALSE;
        !           788: #endif
        !           789: 
        !           790:    sh[j] = scsi_register(tpnt, sizeof(struct hostdata));
        !           791: 
        !           792:    if (sh[j] == NULL) {
        !           793:       printk("%s: unable to register host, detaching.\n", name);
        !           794: 
        !           795:       free_irq(irq, &sha[j]);
        !           796: 
        !           797:       if (subversion == ISA) free_dma(dma_channel);
        !           798: 
        !           799:       return FALSE;
        !           800:       }
        !           801: 
        !           802:    sh[j]->io_port = port_base;
        !           803:    sh[j]->unique_id = port_base;
        !           804:    sh[j]->n_io_port = REGION_SIZE;
        !           805:    sh[j]->base = bios_segment_table[config_1.bios_segment];
        !           806:    sh[j]->irq = irq;
        !           807:    sh[j]->sg_tablesize = MAX_SGLIST;
        !           808:    sh[j]->this_id = config_2.ha_scsi_id;
        !           809:    sh[j]->can_queue = MAX_MAILBOXES;
        !           810:    sh[j]->cmd_per_lun = MAX_CMD_PER_LUN;
        !           811:    sh[j]->select_queue_depths = select_queue_depths;
        !           812: 
        !           813: #if defined(DEBUG_DETECT)
        !           814:    {
        !           815:    unsigned char sys_mask, lcl_mask;
        !           816: 
        !           817:    sys_mask = inb(sh[j]->io_port + REG_SYS_MASK);
        !           818:    lcl_mask = inb(sh[j]->io_port + REG_LCL_MASK);
        !           819:    printk("SYS_MASK 0x%x, LCL_MASK 0x%x.\n", sys_mask, lcl_mask);
        !           820:    }
        !           821: #endif
        !           822: 
        !           823:    /* Probably a bogus host scsi id, set it to the dummy value */
        !           824:    if (sh[j]->this_id == 0) sh[j]->this_id = -1;
        !           825: 
        !           826:    /* If BIOS is disabled, force enable interrupts */
        !           827:    if (sh[j]->base == 0) outb(CMD_ENA_INTR, sh[j]->io_port + REG_SYS_MASK);
        !           828: 
        !           829:    /* Register the I/O space that we use */
        !           830:    request_region(sh[j]->io_port, sh[j]->n_io_port, driver_name);
        !           831: 
        !           832:    memset(HD(j), 0, sizeof(struct hostdata));
        !           833:    HD(j)->heads = mapping_table[config_2.mapping_mode].heads;
        !           834:    HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors;
        !           835:    HD(j)->subversion = subversion;
        !           836:    HD(j)->board_number = j;
        !           837: 
        !           838:    if (have_old_firmware) sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
        !           839: 
        !           840:    if (HD(j)->subversion == ESA) {
        !           841:       sh[j]->unchecked_isa_dma = FALSE;
        !           842:       sh[j]->dma_channel = NO_DMA;
        !           843:       sprintf(BN(j), "U34F%d", j);
        !           844:       bus_type = "VESA";
        !           845:       }
        !           846:    else {
        !           847:       sh[j]->wish_block = TRUE;
        !           848:       sh[j]->unchecked_isa_dma = TRUE;
        !           849:       disable_dma(dma_channel);
        !           850:       clear_dma_ff(dma_channel);
        !           851:       set_dma_mode(dma_channel, DMA_MODE_CASCADE);
        !           852:       enable_dma(dma_channel);
        !           853:       sh[j]->dma_channel = dma_channel;
        !           854:       sprintf(BN(j), "U14F%d", j);
        !           855:       bus_type = "ISA";
        !           856:       }
        !           857: 
        !           858:    sh[j]->max_channel = MAX_CHANNEL - 1;
        !           859:    sh[j]->max_id = MAX_TARGET;
        !           860:    sh[j]->max_lun = MAX_LUN;
        !           861: 
        !           862:    if (HD(j)->subversion == ISA && !board_inquiry(j)) {
        !           863:       HD(j)->board_id[40] = 0;
        !           864: 
        !           865:       if (strcmp(&HD(j)->board_id[32], "06000600")) {
        !           866:          printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]);
        !           867:          printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n",
        !           868:                 BN(j), &HD(j)->board_id[32]);
        !           869:          sh[j]->hostt->use_clustering = DISABLE_CLUSTERING;
        !           870:          sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
        !           871:          }
        !           872:       }
        !           873: 
        !           874:    if (dma_channel == NO_DMA) sprintf(dma_name, "%s", "BMST");
        !           875:    else                       sprintf(dma_name, "DMA %u", dma_channel);
        !           876: 
        !           877:    for (i = 0; i < sh[j]->can_queue; i++)
        !           878:       if (! ((&HD(j)->cp[i])->sglist = kmalloc(
        !           879:             sh[j]->sg_tablesize * sizeof(struct sg_list),
        !           880:             (sh[j]->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC))) {
        !           881:          printk("%s: kmalloc SGlist failed, mbox %d, detaching.\n", BN(j), i);
        !           882:          u14_34f_release(sh[j]);
        !           883:          return FALSE;
        !           884:          }
        !           885: 
        !           886:    if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN)
        !           887:        max_queue_depth = MAX_TAGGED_CMD_PER_LUN;
        !           888: 
        !           889:    if (max_queue_depth < MAX_CMD_PER_LUN) max_queue_depth = MAX_CMD_PER_LUN;
        !           890: 
        !           891:    if (j == 0) {
        !           892:       printk("UltraStor 14F/34F: Copyright (C) 1994-1998 Dario Ballabio.\n");
        !           893:       printk("%s config options -> of:%c, lc:%c, mq:%d, eh:%c, et:%c.\n",
        !           894:              driver_name, YESNO(have_old_firmware), YESNO(linked_comm),
        !           895:              max_queue_depth, YESNO(use_new_eh_code), YESNO(ext_tran));
        !           896:       }
        !           897: 
        !           898:    printk("%s: %s 0x%03lx, BIOS 0x%05x, IRQ %u, %s, SG %d, MB %d.\n",
        !           899:           BN(j), bus_type, (unsigned long)sh[j]->io_port, (int)sh[j]->base,
        !           900:           sh[j]->irq, dma_name, sh[j]->sg_tablesize, sh[j]->can_queue);
        !           901: 
        !           902:    if (sh[j]->max_id > 8 || sh[j]->max_lun > 8)
        !           903:       printk("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n",
        !           904:              BN(j), sh[j]->max_id, sh[j]->max_lun);
        !           905: 
        !           906:    for (i = 0; i <= sh[j]->max_channel; i++)
        !           907:       printk("%s: SCSI channel %u enabled, host target ID %d.\n",
        !           908:              BN(j), i, sh[j]->this_id);
        !           909: 
        !           910:    return TRUE;
        !           911: }
        !           912: 
        !           913: __initfunc (void u14_34f_setup(char *str, int *ints)) {
        !           914:    int i, argc = ints[0];
        !           915:    char *cur = str, *pc;
        !           916: 
        !           917:    if (argc > 0) {
        !           918: 
        !           919:       if (argc > MAX_INT_PARAM) argc = MAX_INT_PARAM;
        !           920: 
        !           921:       for (i = 0; i < argc; i++) io_port[i] = ints[i + 1];
        !           922: 
        !           923:       io_port[i] = 0;
        !           924:       setup_done = TRUE;
        !           925:       }
        !           926: 
        !           927:    while (cur && (pc = strchr(cur, ':'))) {
        !           928:       int val = 0, c = *++pc;
        !           929: 
        !           930:       if (c == 'n' || c == 'N') val = FALSE;
        !           931:       else if (c == 'y' || c == 'Y') val = TRUE;
        !           932:       else val = (int) simple_strtoul(pc, NULL, 0);
        !           933: 
        !           934:       if (!strncmp(cur, "lc:", 3)) linked_comm = val;
        !           935:       else if (!strncmp(cur, "of:", 3)) have_old_firmware = val;
        !           936:       else if (!strncmp(cur, "mq:", 3))  max_queue_depth = val;
        !           937:       else if (!strncmp(cur, "ls:", 3))  link_statistics = val;
        !           938:       else if (!strncmp(cur, "eh:", 3))  use_new_eh_code = val;
        !           939:       else if (!strncmp(cur, "et:", 3))  ext_tran = val;
        !           940: 
        !           941:       if ((cur = strchr(cur, ','))) ++cur;
        !           942:       }
        !           943: 
        !           944:    return;
        !           945: }
        !           946: 
        !           947: __initfunc (int u14_34f_detect(Scsi_Host_Template *tpnt)) {
        !           948:    unsigned int j = 0, k;
        !           949:    IRQ_FLAGS
        !           950: 
        !           951:    IRQ_LOCK_SAVE
        !           952:    tpnt->proc_dir = &proc_scsi_u14_34f;
        !           953: 
        !           954: #if defined(MODULE)
        !           955:    /* io_port could have been modified when loading as a module */
        !           956:    if(io_port[0] != SKIP) {
        !           957:       setup_done = TRUE;
        !           958:       io_port[MAX_INT_PARAM] = 0;
        !           959:       }
        !           960: #endif
        !           961: 
        !           962:    for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL;
        !           963: 
        !           964:    for (k = 0; io_port[k]; k++) {
        !           965: 
        !           966:       if (io_port[k] == SKIP) continue;
        !           967: 
        !           968:       if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt)) j++;
        !           969:       }
        !           970: 
        !           971:    num_boards = j;
        !           972:    IRQ_UNLOCK_RESTORE
        !           973:    return j;
        !           974: }
        !           975: 
        !           976: static inline void build_sg_list(struct mscp *cpp, Scsi_Cmnd *SCpnt) {
        !           977:    unsigned int k, data_len = 0;
        !           978:    struct scatterlist *sgpnt;
        !           979: 
        !           980:    sgpnt = (struct scatterlist *) SCpnt->request_buffer;
        !           981: 
        !           982:    for (k = 0; k < SCpnt->use_sg; k++) {
        !           983:       cpp->sglist[k].address = V2DEV(sgpnt[k].address);
        !           984:       cpp->sglist[k].num_bytes = H2DEV(sgpnt[k].length);
        !           985:       data_len += sgpnt[k].length;
        !           986:       }
        !           987: 
        !           988:    cpp->use_sg = SCpnt->use_sg;
        !           989:    cpp->data_address = V2DEV(cpp->sglist);
        !           990:    cpp->data_len = H2DEV(data_len);
        !           991: }
        !           992: 
        !           993: static inline int do_qcomm(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) {
        !           994:    unsigned int i, j, k;
        !           995:    struct mscp *cpp;
        !           996: 
        !           997:    static const unsigned char data_out_cmds[] = {
        !           998:       0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e,
        !           999:       0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40,
        !          1000:       0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b
        !          1001:       };
        !          1002: 
        !          1003:    static const unsigned char data_none_cmds[] = {
        !          1004:       0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e,
        !          1005:       0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47,
        !          1006:       0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5
        !          1007:       };
        !          1008: 
        !          1009:    /* j is the board number */
        !          1010:    j = ((struct hostdata *) SCpnt->host->hostdata)->board_number;
        !          1011: 
        !          1012:    if (SCpnt->host_scribble)
        !          1013:       panic("%s: qcomm, pid %ld, SCpnt %p already active.\n",
        !          1014:             BN(j), SCpnt->pid, SCpnt);
        !          1015: 
        !          1016:    /* i is the mailbox number, look for the first free mailbox
        !          1017:       starting from last_cp_used */
        !          1018:    i = HD(j)->last_cp_used + 1;
        !          1019: 
        !          1020:    for (k = 0; k < sh[j]->can_queue; k++, i++) {
        !          1021: 
        !          1022:       if (i >= sh[j]->can_queue) i = 0;
        !          1023: 
        !          1024:       if (HD(j)->cp_stat[i] == FREE) {
        !          1025:          HD(j)->last_cp_used = i;
        !          1026:          break;
        !          1027:          }
        !          1028:       }
        !          1029: 
        !          1030:    if (k == sh[j]->can_queue) {
        !          1031:       printk("%s: qcomm, no free mailbox.\n", BN(j));
        !          1032:       return 1;
        !          1033:       }
        !          1034: 
        !          1035:    /* Set pointer to control packet structure */
        !          1036:    cpp = &HD(j)->cp[i];
        !          1037: 
        !          1038:    memset(cpp, 0, sizeof(struct mscp) - sizeof(struct sg_list *));
        !          1039:    SCpnt->scsi_done = done;
        !          1040:    cpp->index = i;
        !          1041:    SCpnt->host_scribble = (unsigned char *) &cpp->index;
        !          1042: 
        !          1043:    if (do_trace) printk("%s: qcomm, mbox %d, target %d.%d:%d, pid %ld.\n",
        !          1044:                         BN(j), i, SCpnt->channel, SCpnt->target,
        !          1045:                         SCpnt->lun, SCpnt->pid);
        !          1046: 
        !          1047:    cpp->xdir = DTD_IN;
        !          1048: 
        !          1049:    for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
        !          1050:       if (SCpnt->cmnd[0] == data_out_cmds[k]) {
        !          1051:          cpp->xdir = DTD_OUT;
        !          1052:          break;
        !          1053:          }
        !          1054: 
        !          1055:    if (cpp->xdir == DTD_IN)
        !          1056:       for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++)
        !          1057:          if (SCpnt->cmnd[0] == data_none_cmds[k]) {
        !          1058:             cpp->xdir = DTD_NONE;
        !          1059:             break;
        !          1060:             }
        !          1061: 
        !          1062:    cpp->opcode = OP_SCSI;
        !          1063:    cpp->channel = SCpnt->channel;
        !          1064:    cpp->target = SCpnt->target;
        !          1065:    cpp->lun = SCpnt->lun;
        !          1066:    cpp->SCpnt = SCpnt;
        !          1067:    cpp->sense_addr = V2DEV(SCpnt->sense_buffer);
        !          1068:    cpp->sense_len = sizeof SCpnt->sense_buffer;
        !          1069: 
        !          1070:    if (SCpnt->use_sg) {
        !          1071:       cpp->sg = TRUE;
        !          1072:       build_sg_list(cpp, SCpnt);
        !          1073:       }
        !          1074:    else {
        !          1075:       cpp->data_address = V2DEV(SCpnt->request_buffer);
        !          1076:       cpp->data_len = H2DEV(SCpnt->request_bufflen);
        !          1077:       }
        !          1078: 
        !          1079:    cpp->scsi_cdbs_len = SCpnt->cmd_len;
        !          1080:    memcpy(cpp->scsi_cdbs, SCpnt->cmnd, cpp->scsi_cdbs_len);
        !          1081: 
        !          1082:    if (linked_comm && SCpnt->device->queue_depth > 2
        !          1083:                                      && TLDEV(SCpnt->device->type)) {
        !          1084:       HD(j)->cp_stat[i] = READY;
        !          1085:       flush_dev(SCpnt->device, SCpnt->request.sector, j, FALSE);
        !          1086:       return 0;
        !          1087:       }
        !          1088: 
        !          1089:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1090:       SCpnt->host_scribble = NULL;
        !          1091:       printk("%s: qcomm, target %d.%d:%d, pid %ld, adapter busy.\n",
        !          1092:              BN(j), SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid);
        !          1093:       return 1;
        !          1094:       }
        !          1095: 
        !          1096:    /* Store pointer in OGM address bytes */
        !          1097:    outl(V2DEV(cpp), sh[j]->io_port + REG_OGM);
        !          1098: 
        !          1099:    /* Issue OGM interrupt */
        !          1100:    outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
        !          1101: 
        !          1102:    HD(j)->cp_stat[i] = IN_USE;
        !          1103:    return 0;
        !          1104: }
        !          1105: 
        !          1106: int u14_34f_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) {
        !          1107:    int rtn;
        !          1108:    IRQ_FLAGS
        !          1109: 
        !          1110:    IRQ_LOCK_SAVE
        !          1111:    rtn = do_qcomm(SCpnt, done);
        !          1112:    IRQ_UNLOCK_RESTORE
        !          1113:    return rtn;
        !          1114: }
        !          1115: 
        !          1116: static inline int do_old_abort(Scsi_Cmnd *SCarg) {
        !          1117:    unsigned int i, j;
        !          1118: 
        !          1119:    j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
        !          1120: 
        !          1121:    if (SCarg->host_scribble == NULL ||
        !          1122:        (SCarg->serial_number_at_timeout &&
        !          1123:        (SCarg->serial_number != SCarg->serial_number_at_timeout))) {
        !          1124:       printk("%s: abort, target %d.%d:%d, pid %ld inactive.\n",
        !          1125:              BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
        !          1126:       return SCSI_ABORT_NOT_RUNNING;
        !          1127:       }
        !          1128: 
        !          1129:    i = *(unsigned int *)SCarg->host_scribble;
        !          1130:    printk("%s: abort, mbox %d, target %d.%d:%d, pid %ld.\n",
        !          1131:           BN(j), i, SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
        !          1132: 
        !          1133:    if (i >= sh[j]->can_queue)
        !          1134:       panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j));
        !          1135: 
        !          1136:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1137:       printk("%s: abort, timeout error.\n", BN(j));
        !          1138:       return SCSI_ABORT_ERROR;
        !          1139:       }
        !          1140: 
        !          1141:    if (HD(j)->cp_stat[i] == FREE) {
        !          1142:       printk("%s: abort, mbox %d is free.\n", BN(j), i);
        !          1143:       return SCSI_ABORT_NOT_RUNNING;
        !          1144:       }
        !          1145: 
        !          1146:    if (HD(j)->cp_stat[i] == IN_USE) {
        !          1147:       printk("%s: abort, mbox %d is in use.\n", BN(j), i);
        !          1148: 
        !          1149:       if (SCarg != HD(j)->cp[i].SCpnt)
        !          1150:          panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
        !          1151:                BN(j), i, SCarg, HD(j)->cp[i].SCpnt);
        !          1152: 
        !          1153:       if (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED)
        !          1154:          printk("%s: abort, mbox %d, interrupt pending.\n", BN(j), i);
        !          1155: 
        !          1156:       return SCSI_ABORT_SNOOZE;
        !          1157:       }
        !          1158: 
        !          1159:    if (HD(j)->cp_stat[i] == IN_RESET) {
        !          1160:       printk("%s: abort, mbox %d is in reset.\n", BN(j), i);
        !          1161:       return SCSI_ABORT_ERROR;
        !          1162:       }
        !          1163: 
        !          1164:    if (HD(j)->cp_stat[i] == LOCKED) {
        !          1165:       printk("%s: abort, mbox %d is locked.\n", BN(j), i);
        !          1166:       return SCSI_ABORT_NOT_RUNNING;
        !          1167:       }
        !          1168: 
        !          1169:    if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
        !          1170:       SCarg->result = DID_ABORT << 16;
        !          1171:       SCarg->host_scribble = NULL;
        !          1172:       HD(j)->cp_stat[i] = FREE;
        !          1173:       printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n",
        !          1174:              BN(j), i, SCarg->pid);
        !          1175:       SCarg->scsi_done(SCarg);
        !          1176:       return SCSI_ABORT_SUCCESS;
        !          1177:       }
        !          1178: 
        !          1179:    panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i);
        !          1180: }
        !          1181: 
        !          1182: int u14_34f_old_abort(Scsi_Cmnd *SCarg) {
        !          1183:    int rtn;
        !          1184:    IRQ_FLAGS
        !          1185: 
        !          1186:    IRQ_LOCK_SAVE
        !          1187:    rtn = do_old_abort(SCarg);
        !          1188:    IRQ_UNLOCK_RESTORE
        !          1189:    return rtn;
        !          1190: }
        !          1191: 
        !          1192: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101)
        !          1193: 
        !          1194: static inline int do_abort(Scsi_Cmnd *SCarg) {
        !          1195:    unsigned int i, j;
        !          1196: 
        !          1197:    j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
        !          1198: 
        !          1199:    if (SCarg->host_scribble == NULL) {
        !          1200:       printk("%s: abort, target %d.%d:%d, pid %ld inactive.\n",
        !          1201:              BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
        !          1202:       return SUCCESS;
        !          1203:       }
        !          1204: 
        !          1205:    i = *(unsigned int *)SCarg->host_scribble;
        !          1206:    printk("%s: abort, mbox %d, target %d.%d:%d, pid %ld.\n",
        !          1207:           BN(j), i, SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
        !          1208: 
        !          1209:    if (i >= sh[j]->can_queue)
        !          1210:       panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j));
        !          1211: 
        !          1212:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1213:       printk("%s: abort, timeout error.\n", BN(j));
        !          1214:       return FAILED;
        !          1215:       }
        !          1216: 
        !          1217:    if (HD(j)->cp_stat[i] == FREE) {
        !          1218:       printk("%s: abort, mbox %d is free.\n", BN(j), i);
        !          1219:       return SUCCESS;
        !          1220:       }
        !          1221: 
        !          1222:    if (HD(j)->cp_stat[i] == IN_USE) {
        !          1223:       printk("%s: abort, mbox %d is in use.\n", BN(j), i);
        !          1224: 
        !          1225:       if (SCarg != HD(j)->cp[i].SCpnt)
        !          1226:          panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
        !          1227:                BN(j), i, SCarg, HD(j)->cp[i].SCpnt);
        !          1228: 
        !          1229:       if (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED)
        !          1230:          printk("%s: abort, mbox %d, interrupt pending.\n", BN(j), i);
        !          1231: 
        !          1232:       if (SCarg->eh_state == SCSI_STATE_TIMEOUT) {
        !          1233:          SCarg->host_scribble = NULL;
        !          1234:          HD(j)->cp_stat[i] = FREE;
        !          1235:          printk("%s, abort, mbox %d, eh_state timeout, pid %ld.\n",
        !          1236:                 BN(j), i, SCarg->pid);
        !          1237:          return SUCCESS;
        !          1238:          }
        !          1239: 
        !          1240:       return FAILED;
        !          1241:       }
        !          1242: 
        !          1243:    if (HD(j)->cp_stat[i] == IN_RESET) {
        !          1244:       printk("%s: abort, mbox %d is in reset.\n", BN(j), i);
        !          1245:       return FAILED;
        !          1246:       }
        !          1247: 
        !          1248:    if (HD(j)->cp_stat[i] == LOCKED) {
        !          1249:       printk("%s: abort, mbox %d is locked.\n", BN(j), i);
        !          1250:       return SUCCESS;
        !          1251:       }
        !          1252: 
        !          1253:    if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
        !          1254:       SCarg->result = DID_ABORT << 16;
        !          1255:       SCarg->host_scribble = NULL;
        !          1256:       HD(j)->cp_stat[i] = FREE;
        !          1257:       printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n",
        !          1258:              BN(j), i, SCarg->pid);
        !          1259:       SCarg->scsi_done(SCarg);
        !          1260:       return SUCCESS;
        !          1261:       }
        !          1262: 
        !          1263:    panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i);
        !          1264: }
        !          1265: 
        !          1266: int u14_34f_abort(Scsi_Cmnd *SCarg) {
        !          1267: 
        !          1268:    return do_abort(SCarg);
        !          1269: }
        !          1270: 
        !          1271: #endif /* new_eh_code */
        !          1272: 
        !          1273: static inline int do_old_reset(Scsi_Cmnd *SCarg) {
        !          1274:    unsigned int i, j, time, k, c, limit = 0;
        !          1275:    int arg_done = FALSE;
        !          1276:    Scsi_Cmnd *SCpnt;
        !          1277: 
        !          1278:    j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
        !          1279:    printk("%s: reset, enter, target %d.%d:%d, pid %ld.\n",
        !          1280:           BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
        !          1281: 
        !          1282:    if (SCarg->host_scribble == NULL)
        !          1283:       printk("%s: reset, pid %ld inactive.\n", BN(j), SCarg->pid);
        !          1284: 
        !          1285:    if (SCarg->serial_number_at_timeout &&
        !          1286:        (SCarg->serial_number != SCarg->serial_number_at_timeout)) {
        !          1287:       printk("%s: reset, pid %ld, reset not running.\n", BN(j), SCarg->pid);
        !          1288:       return SCSI_RESET_NOT_RUNNING;
        !          1289:       }
        !          1290: 
        !          1291:    if (HD(j)->in_reset) {
        !          1292:       printk("%s: reset, exit, already in reset.\n", BN(j));
        !          1293:       return SCSI_RESET_ERROR;
        !          1294:       }
        !          1295: 
        !          1296:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1297:       printk("%s: reset, exit, timeout error.\n", BN(j));
        !          1298:       return SCSI_RESET_ERROR;
        !          1299:       }
        !          1300: 
        !          1301:    HD(j)->retries = 0;
        !          1302: 
        !          1303:    for (c = 0; c <= sh[j]->max_channel; c++)
        !          1304:       for (k = 0; k < sh[j]->max_id; k++) {
        !          1305:          HD(j)->target_redo[k][c] = TRUE;
        !          1306:          HD(j)->target_to[k][c] = 0;
        !          1307:          }
        !          1308: 
        !          1309:    for (i = 0; i < sh[j]->can_queue; i++) {
        !          1310: 
        !          1311:       if (HD(j)->cp_stat[i] == FREE) continue;
        !          1312: 
        !          1313:       if (HD(j)->cp_stat[i] == LOCKED) {
        !          1314:          HD(j)->cp_stat[i] = FREE;
        !          1315:          printk("%s: reset, locked mbox %d forced free.\n", BN(j), i);
        !          1316:          continue;
        !          1317:          }
        !          1318: 
        !          1319:       if (!(SCpnt = HD(j)->cp[i].SCpnt))
        !          1320:          panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i);
        !          1321: 
        !          1322:       if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
        !          1323:          HD(j)->cp_stat[i] = ABORTING;
        !          1324:          printk("%s: reset, mbox %d aborting, pid %ld.\n",
        !          1325:                 BN(j), i, SCpnt->pid);
        !          1326:          }
        !          1327: 
        !          1328:       else {
        !          1329:          HD(j)->cp_stat[i] = IN_RESET;
        !          1330:          printk("%s: reset, mbox %d in reset, pid %ld.\n",
        !          1331:                 BN(j), i, SCpnt->pid);
        !          1332:          }
        !          1333: 
        !          1334:       if (SCpnt->host_scribble == NULL)
        !          1335:          panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i);
        !          1336: 
        !          1337:       if (*(unsigned int *)SCpnt->host_scribble != i)
        !          1338:          panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i);
        !          1339: 
        !          1340:       if (SCpnt->scsi_done == NULL)
        !          1341:          panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i);
        !          1342: 
        !          1343:       if (SCpnt == SCarg) arg_done = TRUE;
        !          1344:       }
        !          1345: 
        !          1346:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1347:       printk("%s: reset, cannot reset, timeout error.\n", BN(j));
        !          1348:       return SCSI_RESET_ERROR;
        !          1349:       }
        !          1350: 
        !          1351:    outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR);
        !          1352:    printk("%s: reset, board reset done, enabling interrupts.\n", BN(j));
        !          1353: 
        !          1354: #if defined(DEBUG_RESET)
        !          1355:    do_trace = TRUE;
        !          1356: #endif
        !          1357: 
        !          1358:    HD(j)->in_reset = TRUE;
        !          1359:    SPIN_UNLOCK
        !          1360:    IRQ_UNLOCK
        !          1361:    time = jiffies;
        !          1362:    while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L);
        !          1363:    IRQ_LOCK
        !          1364:    SPIN_LOCK
        !          1365:    printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit);
        !          1366: 
        !          1367:    for (i = 0; i < sh[j]->can_queue; i++) {
        !          1368: 
        !          1369:       if (HD(j)->cp_stat[i] == IN_RESET) {
        !          1370:          SCpnt = HD(j)->cp[i].SCpnt;
        !          1371:          SCpnt->result = DID_RESET << 16;
        !          1372:          SCpnt->host_scribble = NULL;
        !          1373: 
        !          1374:          /* This mailbox is still waiting for its interrupt */
        !          1375:          HD(j)->cp_stat[i] = LOCKED;
        !          1376: 
        !          1377:          printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n",
        !          1378:                 BN(j), i, SCpnt->pid);
        !          1379:          }
        !          1380: 
        !          1381:       else if (HD(j)->cp_stat[i] == ABORTING) {
        !          1382:          SCpnt = HD(j)->cp[i].SCpnt;
        !          1383:          SCpnt->result = DID_RESET << 16;
        !          1384:          SCpnt->host_scribble = NULL;
        !          1385: 
        !          1386:          /* This mailbox was never queued to the adapter */
        !          1387:          HD(j)->cp_stat[i] = FREE;
        !          1388: 
        !          1389:          printk("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n",
        !          1390:                 BN(j), i, SCpnt->pid);
        !          1391:          }
        !          1392: 
        !          1393:       else
        !          1394: 
        !          1395:          /* Any other mailbox has already been set free by interrupt */
        !          1396:          continue;
        !          1397: 
        !          1398:       SCpnt->scsi_done(SCpnt);
        !          1399:       IRQ_LOCK
        !          1400:       }
        !          1401: 
        !          1402:    HD(j)->in_reset = FALSE;
        !          1403:    do_trace = FALSE;
        !          1404: 
        !          1405:    if (arg_done) {
        !          1406:       printk("%s: reset, exit, success.\n", BN(j));
        !          1407:       return SCSI_RESET_SUCCESS;
        !          1408:       }
        !          1409:    else {
        !          1410:       printk("%s: reset, exit, wakeup.\n", BN(j));
        !          1411:       return SCSI_RESET_PUNT;
        !          1412:       }
        !          1413: }
        !          1414: 
        !          1415: int u14_34f_old_reset(Scsi_Cmnd *SCarg, unsigned int reset_flags) {
        !          1416:    int rtn;
        !          1417:    IRQ_FLAGS
        !          1418: 
        !          1419:    IRQ_LOCK_SAVE
        !          1420:    rtn = do_old_reset(SCarg);
        !          1421:    IRQ_UNLOCK_RESTORE
        !          1422:    return rtn;
        !          1423: }
        !          1424: 
        !          1425: #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101)
        !          1426: 
        !          1427: static inline int do_reset(Scsi_Cmnd *SCarg) {
        !          1428:    unsigned int i, j, time, k, c, limit = 0;
        !          1429:    int arg_done = FALSE;
        !          1430:    Scsi_Cmnd *SCpnt;
        !          1431: 
        !          1432:    j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
        !          1433:    printk("%s: reset, enter, target %d.%d:%d, pid %ld.\n",
        !          1434:           BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
        !          1435: 
        !          1436:    if (SCarg->host_scribble == NULL)
        !          1437:       printk("%s: reset, pid %ld inactive.\n", BN(j), SCarg->pid);
        !          1438: 
        !          1439:    if (HD(j)->in_reset) {
        !          1440:       printk("%s: reset, exit, already in reset.\n", BN(j));
        !          1441:       return FAILED;
        !          1442:       }
        !          1443: 
        !          1444:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1445:       printk("%s: reset, exit, timeout error.\n", BN(j));
        !          1446:       return FAILED;
        !          1447:       }
        !          1448: 
        !          1449:    HD(j)->retries = 0;
        !          1450: 
        !          1451:    for (c = 0; c <= sh[j]->max_channel; c++)
        !          1452:       for (k = 0; k < sh[j]->max_id; k++) {
        !          1453:          HD(j)->target_redo[k][c] = TRUE;
        !          1454:          HD(j)->target_to[k][c] = 0;
        !          1455:          }
        !          1456: 
        !          1457:    for (i = 0; i < sh[j]->can_queue; i++) {
        !          1458: 
        !          1459:       if (HD(j)->cp_stat[i] == FREE) continue;
        !          1460: 
        !          1461:       if (HD(j)->cp_stat[i] == LOCKED) {
        !          1462:          HD(j)->cp_stat[i] = FREE;
        !          1463:          printk("%s: reset, locked mbox %d forced free.\n", BN(j), i);
        !          1464:          continue;
        !          1465:          }
        !          1466: 
        !          1467:       if (!(SCpnt = HD(j)->cp[i].SCpnt))
        !          1468:          panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i);
        !          1469: 
        !          1470:       if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
        !          1471:          HD(j)->cp_stat[i] = ABORTING;
        !          1472:          printk("%s: reset, mbox %d aborting, pid %ld.\n",
        !          1473:                 BN(j), i, SCpnt->pid);
        !          1474:          }
        !          1475: 
        !          1476:       else {
        !          1477:          HD(j)->cp_stat[i] = IN_RESET;
        !          1478:          printk("%s: reset, mbox %d in reset, pid %ld.\n",
        !          1479:                 BN(j), i, SCpnt->pid);
        !          1480:          }
        !          1481: 
        !          1482:       if (SCpnt->host_scribble == NULL)
        !          1483:          panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i);
        !          1484: 
        !          1485:       if (*(unsigned int *)SCpnt->host_scribble != i)
        !          1486:          panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i);
        !          1487: 
        !          1488:       if (SCpnt->scsi_done == NULL)
        !          1489:          panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i);
        !          1490: 
        !          1491:       if (SCpnt == SCarg) arg_done = TRUE;
        !          1492:       }
        !          1493: 
        !          1494:    if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1495:       printk("%s: reset, cannot reset, timeout error.\n", BN(j));
        !          1496:       return FAILED;
        !          1497:       }
        !          1498: 
        !          1499:    outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR);
        !          1500:    printk("%s: reset, board reset done, enabling interrupts.\n", BN(j));
        !          1501: 
        !          1502: #if defined(DEBUG_RESET)
        !          1503:    do_trace = TRUE;
        !          1504: #endif
        !          1505: 
        !          1506:    HD(j)->in_reset = TRUE;
        !          1507:    SPIN_UNLOCK
        !          1508:    IRQ_UNLOCK
        !          1509:    time = jiffies;
        !          1510:    while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L);
        !          1511:    IRQ_LOCK
        !          1512:    SPIN_LOCK
        !          1513:    printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit);
        !          1514: 
        !          1515:    for (i = 0; i < sh[j]->can_queue; i++) {
        !          1516: 
        !          1517:       if (HD(j)->cp_stat[i] == IN_RESET) {
        !          1518:          SCpnt = HD(j)->cp[i].SCpnt;
        !          1519:          SCpnt->result = DID_RESET << 16;
        !          1520:          SCpnt->host_scribble = NULL;
        !          1521: 
        !          1522:          /* This mailbox is still waiting for its interrupt */
        !          1523:          HD(j)->cp_stat[i] = LOCKED;
        !          1524: 
        !          1525:          printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n",
        !          1526:                 BN(j), i, SCpnt->pid);
        !          1527:          }
        !          1528: 
        !          1529:       else if (HD(j)->cp_stat[i] == ABORTING) {
        !          1530:          SCpnt = HD(j)->cp[i].SCpnt;
        !          1531:          SCpnt->result = DID_RESET << 16;
        !          1532:          SCpnt->host_scribble = NULL;
        !          1533: 
        !          1534:          /* This mailbox was never queued to the adapter */
        !          1535:          HD(j)->cp_stat[i] = FREE;
        !          1536: 
        !          1537:          printk("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n",
        !          1538:                 BN(j), i, SCpnt->pid);
        !          1539:          }
        !          1540: 
        !          1541:       else
        !          1542: 
        !          1543:          /* Any other mailbox has already been set free by interrupt */
        !          1544:          continue;
        !          1545: 
        !          1546:       SCpnt->scsi_done(SCpnt);
        !          1547:       IRQ_LOCK
        !          1548:       }
        !          1549: 
        !          1550:    HD(j)->in_reset = FALSE;
        !          1551:    do_trace = FALSE;
        !          1552: 
        !          1553:    if (arg_done) printk("%s: reset, exit, pid %ld done.\n", BN(j), SCarg->pid);
        !          1554:    else          printk("%s: reset, exit.\n", BN(j));
        !          1555: 
        !          1556:    return SUCCESS;
        !          1557: }
        !          1558: 
        !          1559: int u14_34f_reset(Scsi_Cmnd *SCarg) {
        !          1560: 
        !          1561:    return do_reset(SCarg);
        !          1562: }
        !          1563: 
        !          1564: #endif /* new_eh_code */
        !          1565: 
        !          1566: int u14_34f_biosparam(Disk *disk, kdev_t dev, int *dkinfo) {
        !          1567:    unsigned int j = 0;
        !          1568:    int size = disk->capacity;
        !          1569: 
        !          1570:    dkinfo[0] = HD(j)->heads;
        !          1571:    dkinfo[1] = HD(j)->sectors;
        !          1572:    dkinfo[2] = size / (HD(j)->heads * HD(j)->sectors);
        !          1573: 
        !          1574:    if (ext_tran && (scsicam_bios_param(disk, dev, dkinfo) < 0)) {
        !          1575:       dkinfo[0] = 255;
        !          1576:       dkinfo[1] = 63;
        !          1577:       dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
        !          1578:       }
        !          1579: 
        !          1580: #if defined (DEBUG_GEOMETRY)
        !          1581:    printk ("%s: biosparam, head=%d, sec=%d, cyl=%d.\n", driver_name,
        !          1582:            dkinfo[0], dkinfo[1], dkinfo[2]);
        !          1583: #endif
        !          1584: 
        !          1585:    return FALSE;
        !          1586: }
        !          1587: 
        !          1588: static void sort(unsigned long sk[], unsigned int da[], unsigned int n,
        !          1589:                  unsigned int rev) {
        !          1590:    unsigned int i, j, k, y;
        !          1591:    unsigned long x;
        !          1592: 
        !          1593:    for (i = 0; i < n - 1; i++) {
        !          1594:       k = i;
        !          1595: 
        !          1596:       for (j = k + 1; j < n; j++)
        !          1597:          if (rev) {
        !          1598:             if (sk[j] > sk[k]) k = j;
        !          1599:             }
        !          1600:          else {
        !          1601:             if (sk[j] < sk[k]) k = j;
        !          1602:             }
        !          1603: 
        !          1604:       if (k != i) {
        !          1605:          x = sk[k]; sk[k] = sk[i]; sk[i] = x;
        !          1606:          y = da[k]; da[k] = da[i]; da[i] = y;
        !          1607:          }
        !          1608:       }
        !          1609: 
        !          1610:    return;
        !          1611:    }
        !          1612: 
        !          1613: static inline int reorder(unsigned int j, unsigned long cursec,
        !          1614:                  unsigned int ihdlr, unsigned int il[], unsigned int n_ready) {
        !          1615:    Scsi_Cmnd *SCpnt;
        !          1616:    struct mscp *cpp;
        !          1617:    unsigned int k, n;
        !          1618:    unsigned int rev = FALSE, s = TRUE, r = TRUE;
        !          1619:    unsigned int input_only = TRUE, overlap = FALSE;
        !          1620:    unsigned long sl[n_ready], pl[n_ready], ll[n_ready];
        !          1621:    unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0;
        !          1622:    unsigned long ioseek = 0;
        !          1623: 
        !          1624:    static unsigned int flushcount = 0, batchcount = 0, sortcount = 0;
        !          1625:    static unsigned int readycount = 0, ovlcount = 0, inputcount = 0;
        !          1626:    static unsigned int readysorted = 0, revcount = 0;
        !          1627:    static unsigned long seeksorted = 0, seeknosort = 0;
        !          1628: 
        !          1629:    if (link_statistics && !(++flushcount % link_statistics))
        !          1630:       printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"\
        !          1631:              " av %ldK as %ldK.\n", flushcount, batchcount, inputcount,
        !          1632:              ovlcount, readycount, readysorted, sortcount, revcount,
        !          1633:              seeknosort / (readycount + 1),
        !          1634:              seeksorted / (readycount + 1));
        !          1635: 
        !          1636:    if (n_ready <= 1) return FALSE;
        !          1637: 
        !          1638:    for (n = 0; n < n_ready; n++) {
        !          1639:       k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
        !          1640: 
        !          1641:       if (!(cpp->xdir == DTD_IN)) input_only = FALSE;
        !          1642: 
        !          1643:       if (SCpnt->request.sector < minsec) minsec = SCpnt->request.sector;
        !          1644:       if (SCpnt->request.sector > maxsec) maxsec = SCpnt->request.sector;
        !          1645: 
        !          1646:       sl[n] = SCpnt->request.sector;
        !          1647:       ioseek += SCpnt->request.nr_sectors;
        !          1648: 
        !          1649:       if (!n) continue;
        !          1650: 
        !          1651:       if (sl[n] < sl[n - 1]) s = FALSE;
        !          1652:       if (sl[n] > sl[n - 1]) r = FALSE;
        !          1653: 
        !          1654:       if (link_statistics) {
        !          1655:          if (sl[n] > sl[n - 1])
        !          1656:             seek += sl[n] - sl[n - 1];
        !          1657:          else
        !          1658:             seek += sl[n - 1] - sl[n];
        !          1659:          }
        !          1660: 
        !          1661:       }
        !          1662: 
        !          1663:    if (link_statistics) {
        !          1664:       if (cursec > sl[0]) seek += cursec - sl[0]; else seek += sl[0] - cursec;
        !          1665:       }
        !          1666: 
        !          1667:    if (cursec > ((maxsec + minsec) / 2)) rev = TRUE;
        !          1668: 
        !          1669:    if (ioseek > ((maxsec - minsec) / 2)) rev = FALSE;
        !          1670: 
        !          1671:    if (!((rev && r) || (!rev && s))) sort(sl, il, n_ready, rev);
        !          1672: 
        !          1673:    if (!input_only) for (n = 0; n < n_ready; n++) {
        !          1674:       k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
        !          1675:       ll[n] = SCpnt->request.nr_sectors; pl[n] = SCpnt->pid;
        !          1676: 
        !          1677:       if (!n) continue;
        !          1678: 
        !          1679:       if ((sl[n] == sl[n - 1]) || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n]))
        !          1680:           || (rev && ((sl[n] + ll[n]) > sl[n - 1]))) overlap = TRUE;
        !          1681:       }
        !          1682: 
        !          1683:    if (overlap) sort(pl, il, n_ready, FALSE);
        !          1684: 
        !          1685:    if (link_statistics) {
        !          1686:       if (cursec > sl[0]) iseek = cursec - sl[0]; else iseek = sl[0] - cursec;
        !          1687:       batchcount++; readycount += n_ready, seeknosort += seek / 1024;
        !          1688:       if (input_only) inputcount++;
        !          1689:       if (overlap) { ovlcount++; seeksorted += iseek / 1024; }
        !          1690:       else seeksorted += (iseek + maxsec - minsec) / 1024;
        !          1691:       if (rev && !r)     {  revcount++; readysorted += n_ready; }
        !          1692:       if (!rev && !s)    { sortcount++; readysorted += n_ready; }
        !          1693:       }
        !          1694: 
        !          1695: #if defined(DEBUG_LINKED_COMMANDS)
        !          1696:    if (link_statistics && (overlap || !(flushcount % link_statistics)))
        !          1697:       for (n = 0; n < n_ready; n++) {
        !          1698:          k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
        !          1699:          printk("%s %d.%d:%d pid %ld mb %d fc %d nr %d sec %ld ns %ld"\
        !          1700:                 " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n",
        !          1701:                 (ihdlr ? "ihdlr" : "qcomm"), SCpnt->channel, SCpnt->target,
        !          1702:                 SCpnt->lun, SCpnt->pid, k, flushcount, n_ready,
        !          1703:                 SCpnt->request.sector, SCpnt->request.nr_sectors, cursec,
        !          1704:                 YESNO(s), YESNO(r), YESNO(rev), YESNO(input_only),
        !          1705:                 YESNO(overlap), cpp->xdir);
        !          1706:          }
        !          1707: #endif
        !          1708:    return overlap;
        !          1709: }
        !          1710: 
        !          1711: static void flush_dev(Scsi_Device *dev, unsigned long cursec, unsigned int j,
        !          1712:                       unsigned int ihdlr) {
        !          1713:    Scsi_Cmnd *SCpnt;
        !          1714:    struct mscp *cpp;
        !          1715:    unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES];
        !          1716: 
        !          1717:    for (k = 0; k < sh[j]->can_queue; k++) {
        !          1718: 
        !          1719:       if (HD(j)->cp_stat[k] != READY && HD(j)->cp_stat[k] != IN_USE) continue;
        !          1720: 
        !          1721:       cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
        !          1722: 
        !          1723:       if (SCpnt->device != dev) continue;
        !          1724: 
        !          1725:       if (HD(j)->cp_stat[k] == IN_USE) return;
        !          1726: 
        !          1727:       il[n_ready++] = k;
        !          1728:       }
        !          1729: 
        !          1730:    if (reorder(j, cursec, ihdlr, il, n_ready)) n_ready = 1;
        !          1731: 
        !          1732:    for (n = 0; n < n_ready; n++) {
        !          1733:       k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
        !          1734: 
        !          1735:       if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
        !          1736:          printk("%s: %s, target %d.%d:%d, pid %ld, mbox %d, adapter"\
        !          1737:                 " busy, will abort.\n", BN(j), (ihdlr ? "ihdlr" : "qcomm"),
        !          1738:                 SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid, k);
        !          1739:          HD(j)->cp_stat[k] = ABORTING;
        !          1740:          continue;
        !          1741:          }
        !          1742: 
        !          1743:       outl(V2DEV(cpp), sh[j]->io_port + REG_OGM);
        !          1744:       outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
        !          1745:       HD(j)->cp_stat[k] = IN_USE;
        !          1746:       }
        !          1747: 
        !          1748: }
        !          1749: 
        !          1750: static inline void ihdlr(int irq, unsigned int j) {
        !          1751:    Scsi_Cmnd *SCpnt;
        !          1752:    unsigned int i, k, c, status, tstatus, reg, ret;
        !          1753:    struct mscp *spp, *cpp;
        !          1754: 
        !          1755:    if (sh[j]->irq != irq)
        !          1756:        panic("%s: ihdlr, irq %d, sh[j]->irq %d.\n", BN(j), irq, sh[j]->irq);
        !          1757: 
        !          1758:    /* Check if this board need to be serviced */
        !          1759:    if (!((reg = inb(sh[j]->io_port + REG_SYS_INTR)) & IRQ_ASSERTED)) return;
        !          1760: 
        !          1761:    HD(j)->iocount++;
        !          1762: 
        !          1763:    if (do_trace) printk("%s: ihdlr, enter, irq %d, count %d.\n", BN(j), irq,
        !          1764:                         HD(j)->iocount);
        !          1765: 
        !          1766:    /* Check if this board is still busy */
        !          1767:    if (wait_on_busy(sh[j]->io_port, 20 * MAXLOOP)) {
        !          1768:       outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
        !          1769:       printk("%s: ihdlr, busy timeout error,  irq %d, reg 0x%x, count %d.\n",
        !          1770:              BN(j), irq, reg, HD(j)->iocount);
        !          1771:       return;
        !          1772:       }
        !          1773: 
        !          1774:    spp = (struct mscp *)DEV2V(ret = inl(sh[j]->io_port + REG_ICM));
        !          1775:    cpp = spp;
        !          1776: 
        !          1777:    /* Clear interrupt pending flag */
        !          1778:    outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
        !          1779: 
        !          1780: #if defined(DEBUG_GENERATE_ABORTS)
        !          1781:    if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 500) < 3)) return;
        !          1782: #endif
        !          1783: 
        !          1784:    /* Find the mailbox to be serviced on this board */
        !          1785:    i = cpp - HD(j)->cp;
        !          1786: 
        !          1787:    if (cpp < HD(j)->cp || cpp >= HD(j)->cp + sh[j]->can_queue
        !          1788:                                      || i >= sh[j]->can_queue)
        !          1789:       panic("%s: ihdlr, invalid mscp bus address %p, cp0 %p.\n", BN(j),
        !          1790:             (void *)ret, HD(j)->cp);
        !          1791: 
        !          1792:    if (HD(j)->cp_stat[i] == IGNORE) {
        !          1793:       HD(j)->cp_stat[i] = FREE;
        !          1794:       return;
        !          1795:       }
        !          1796:    else if (HD(j)->cp_stat[i] == LOCKED) {
        !          1797:       HD(j)->cp_stat[i] = FREE;
        !          1798:       printk("%s: ihdlr, mbox %d unlocked, count %d.\n", BN(j), i,
        !          1799:              HD(j)->iocount);
        !          1800:       return;
        !          1801:       }
        !          1802:    else if (HD(j)->cp_stat[i] == FREE) {
        !          1803:       printk("%s: ihdlr, mbox %d is free, count %d.\n", BN(j), i,
        !          1804:              HD(j)->iocount);
        !          1805:       return;
        !          1806:       }
        !          1807:    else if (HD(j)->cp_stat[i] == IN_RESET)
        !          1808:       printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i);
        !          1809:    else if (HD(j)->cp_stat[i] != IN_USE)
        !          1810:       panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n",
        !          1811:             BN(j), i, HD(j)->cp_stat[i]);
        !          1812: 
        !          1813:    HD(j)->cp_stat[i] = FREE;
        !          1814:    SCpnt = cpp->SCpnt;
        !          1815: 
        !          1816:    if (SCpnt == NULL) panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i);
        !          1817: 
        !          1818:    if (SCpnt->host_scribble == NULL)
        !          1819:       panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", BN(j), i,
        !          1820:             SCpnt->pid, SCpnt);
        !          1821: 
        !          1822:    if (*(unsigned int *)SCpnt->host_scribble != i)
        !          1823:       panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d.\n",
        !          1824:             BN(j), i, SCpnt->pid, *(unsigned int *)SCpnt->host_scribble);
        !          1825: 
        !          1826:    if (linked_comm && SCpnt->device->queue_depth > 2
        !          1827:                                      && TLDEV(SCpnt->device->type))
        !          1828:       flush_dev(SCpnt->device, SCpnt->request.sector, j, TRUE);
        !          1829: 
        !          1830:    tstatus = status_byte(spp->target_status);
        !          1831: 
        !          1832: #if defined(DEBUG_GENERATE_ERRORS)
        !          1833:    if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 200) < 2))
        !          1834:                                            spp->adapter_status = 0x01;
        !          1835: #endif
        !          1836: 
        !          1837:    switch (spp->adapter_status) {
        !          1838:       case ASOK:     /* status OK */
        !          1839: 
        !          1840:          /* Forces a reset if a disk drive keeps returning BUSY */
        !          1841:          if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
        !          1842:             status = DID_ERROR << 16;
        !          1843: 
        !          1844:          /* If there was a bus reset, redo operation on each target */
        !          1845:          else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
        !          1846:                   && HD(j)->target_redo[SCpnt->target][SCpnt->channel])
        !          1847:             status = DID_BUS_BUSY << 16;
        !          1848: 
        !          1849:          /* Works around a flaw in scsi.c */
        !          1850:          else if (tstatus == CHECK_CONDITION
        !          1851:                   && SCpnt->device->type == TYPE_DISK
        !          1852:                   && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
        !          1853:             status = DID_BUS_BUSY << 16;
        !          1854: 
        !          1855:          else
        !          1856:             status = DID_OK << 16;
        !          1857: 
        !          1858:          if (tstatus == GOOD)
        !          1859:             HD(j)->target_redo[SCpnt->target][SCpnt->channel] = FALSE;
        !          1860: 
        !          1861:          if (spp->target_status && SCpnt->device->type == TYPE_DISK)
        !          1862:             printk("%s: ihdlr, target %d.%d:%d, pid %ld, "\
        !          1863:                    "target_status 0x%x, sense key 0x%x.\n", BN(j),
        !          1864:                    SCpnt->channel, SCpnt->target, SCpnt->lun,
        !          1865:                    SCpnt->pid, spp->target_status,
        !          1866:                    SCpnt->sense_buffer[2]);
        !          1867: 
        !          1868:          HD(j)->target_to[SCpnt->target][SCpnt->channel] = 0;
        !          1869: 
        !          1870:          if (HD(j)->last_retried_pid == SCpnt->pid) HD(j)->retries = 0;
        !          1871: 
        !          1872:          break;
        !          1873:       case ASST:     /* Selection Time Out */
        !          1874: 
        !          1875:          if (HD(j)->target_to[SCpnt->target][SCpnt->channel] > 1)
        !          1876:             status = DID_ERROR << 16;
        !          1877:          else {
        !          1878:             status = DID_TIME_OUT << 16;
        !          1879:             HD(j)->target_to[SCpnt->target][SCpnt->channel]++;
        !          1880:             }
        !          1881: 
        !          1882:          break;
        !          1883: 
        !          1884:       /* Perform a limited number of internal retries */
        !          1885:       case 0x93:     /* Unexpected bus free */
        !          1886:       case 0x94:     /* Target bus phase sequence failure */
        !          1887:       case 0x96:     /* Illegal SCSI command */
        !          1888:       case 0xa3:     /* SCSI bus reset error */
        !          1889: 
        !          1890:          for (c = 0; c <= sh[j]->max_channel; c++)
        !          1891:             for (k = 0; k < sh[j]->max_id; k++)
        !          1892:                HD(j)->target_redo[k][c] = TRUE;
        !          1893: 
        !          1894: 
        !          1895:       case 0x92:     /* Data over/under-run */
        !          1896: 
        !          1897:          if (SCpnt->device->type != TYPE_TAPE
        !          1898:              && HD(j)->retries < MAX_INTERNAL_RETRIES) {
        !          1899: 
        !          1900: #if defined(DID_SOFT_ERROR)
        !          1901:             status = DID_SOFT_ERROR << 16;
        !          1902: #else
        !          1903:             status = DID_BUS_BUSY << 16;
        !          1904: #endif
        !          1905: 
        !          1906:             HD(j)->retries++;
        !          1907:             HD(j)->last_retried_pid = SCpnt->pid;
        !          1908:             }
        !          1909:          else
        !          1910:             status = DID_ERROR << 16;
        !          1911: 
        !          1912:          break;
        !          1913:       case 0x01:     /* Invalid command */
        !          1914:       case 0x02:     /* Invalid parameters */
        !          1915:       case 0x03:     /* Invalid data list */
        !          1916:       case 0x84:     /* SCSI bus abort error */
        !          1917:       case 0x9b:     /* Auto request sense error */
        !          1918:       case 0x9f:     /* Unexpected command complete message error */
        !          1919:       case 0xff:     /* Invalid parameter in the S/G list */
        !          1920:       default:
        !          1921:          status = DID_ERROR << 16;
        !          1922:          break;
        !          1923:       }
        !          1924: 
        !          1925:    SCpnt->result = status | spp->target_status;
        !          1926: 
        !          1927: #if defined(DEBUG_INTERRUPT)
        !          1928:    if (SCpnt->result || do_trace)
        !          1929: #else
        !          1930:    if ((spp->adapter_status != ASOK && HD(j)->iocount >  1000) ||
        !          1931:        (spp->adapter_status != ASOK &&
        !          1932:         spp->adapter_status != ASST && HD(j)->iocount <= 1000) ||
        !          1933:         do_trace || msg_byte(spp->target_status))
        !          1934: #endif
        !          1935:       printk("%s: ihdlr, mbox %2d, err 0x%x:%x,"\
        !          1936:              " target %d.%d:%d, pid %ld, reg 0x%x, count %d.\n",
        !          1937:              BN(j), i, spp->adapter_status, spp->target_status,
        !          1938:              SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid,
        !          1939:              reg, HD(j)->iocount);
        !          1940: 
        !          1941:    /* Set the command state to inactive */
        !          1942:    SCpnt->host_scribble = NULL;
        !          1943: 
        !          1944:    SCpnt->scsi_done(SCpnt);
        !          1945: 
        !          1946:    if (do_trace) printk("%s: ihdlr, exit, irq %d, count %d.\n", BN(j), irq,
        !          1947:                         HD(j)->iocount);
        !          1948: 
        !          1949:    return;
        !          1950: }
        !          1951: 
        !          1952: static void do_interrupt_handler(int irq, void *shap, struct pt_regs *regs) {
        !          1953:    unsigned int j;
        !          1954:    IRQ_FLAGS
        !          1955:    SPIN_FLAGS
        !          1956: 
        !          1957:    /* Check if the interrupt must be processed by this handler */
        !          1958:    if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) return;
        !          1959: 
        !          1960:    SPIN_LOCK_SAVE
        !          1961:    IRQ_LOCK_SAVE
        !          1962:    ihdlr(irq, j);
        !          1963:    IRQ_UNLOCK_RESTORE
        !          1964:    SPIN_UNLOCK_RESTORE
        !          1965: }
        !          1966: 
        !          1967: int u14_34f_release(struct Scsi_Host *shpnt) {
        !          1968:    unsigned int i, j;
        !          1969:    IRQ_FLAGS
        !          1970: 
        !          1971:    IRQ_LOCK_SAVE
        !          1972: 
        !          1973:    for (j = 0; sh[j] != NULL && sh[j] != shpnt; j++);
        !          1974: 
        !          1975:    if (sh[j] == NULL) panic("%s: release, invalid Scsi_Host pointer.\n",
        !          1976:                             driver_name);
        !          1977: 
        !          1978:    for (i = 0; i < sh[j]->can_queue; i++)
        !          1979:       if ((&HD(j)->cp[i])->sglist) kfree((&HD(j)->cp[i])->sglist);
        !          1980: 
        !          1981:    free_irq(sh[j]->irq, &sha[j]);
        !          1982: 
        !          1983:    if (sh[j]->dma_channel != NO_DMA) free_dma(sh[j]->dma_channel);
        !          1984: 
        !          1985:    release_region(sh[j]->io_port, sh[j]->n_io_port);
        !          1986:    scsi_unregister(sh[j]);
        !          1987:    IRQ_UNLOCK_RESTORE
        !          1988:    return FALSE;
        !          1989: }
        !          1990: 
        !          1991: #if defined(MODULE)
        !          1992: Scsi_Host_Template driver_template = ULTRASTOR_14_34F;
        !          1993: 
        !          1994: #include "scsi_module.c"
        !          1995: #endif

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