![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to if_ne.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GnuMach] / Gnu-Mach / i386 / i386at|
Return to if_ne.c CVS log | Up to [GnuMach] / Gnu-Mach / i386 / i386at |
GNU Mach 1.0
/*-
* Copyright (c) 1990, 1991 William F. Jolitz.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if_ne.c 7.4 (Berkeley) 5/21/91
*/
/*
* NE2000 Ethernet driver
*
* Parts inspired from Tim Tucker's if_wd driver for the wd8003,
* insight on the ne2000 gained from Robert Clements PC/FTP driver.
*/
#include <ne.h>
#if NNE > 0
#ifdef MACH_KERNEL
#include <kern/time_out.h>
#include <device/device_types.h>
#include <device/errno.h>
#include <device/io_req.h>
#include <device/if_hdr.h>
#include <device/if_ether.h>
#include <device/net_status.h>
#include <device/net_io.h>
#include <i386at/ds8390.h>
#include <i386at/if_nereg.h>
#include <i386/ipl.h>
#include <chips/busses.h>
#ifdef FIPC
#include <ipc/fipc.h>
#endif /* FIPC */
#else MACH_KERNEL
#include <sys/param.h>
#include <mach/vm_param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/table.h>
#include <sys/buf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/vmmac.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <vm/vm_kern.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#include <netns/ns.h>
#include <netns/ns_if.h>
#include <i386/ipl.h>
#include <i386at/atbus.h>
#include <i386at/ds8390.h>
#include <i386at/if_nereg.h>
#include <i386/handler.h>
#include <i386/dispatcher.h>
int ether_output();
int neioctl();
#endif
int neprobe();
void neattach();
int neintr();
int nestart();
int neinit();
static vm_offset_t ne_std[NNE] = {0};
static struct bus_device *ne_info[NNE];
struct bus_driver nedriver =
{ neprobe, 0, neattach, 0, ne_std, "ne", ne_info, 0, 0, 0 };
#define ETHER_MIN_LEN 64
#define ETHER_MAX_LEN 1536
#define SPLNET spl6
/*
* Ethernet software status per interface.
*
* Each interface is referenced by a network interface structure,
* ns_if, which the routing code uses to locate the interface.
* This structure contains the output queue for the interface, its address, ...
*/
typedef struct {
#ifdef MACH_KERNEL
struct ifnet ds_if;
u_char ds_addr[6];
#else MACH_KERNEL
struct arpcom ns_ac; /* Ethernet common part */
#define ds_if ns_ac.ac_if /* network-visible interface */
#define ds_addr ns_ac.ac_enaddr /* hardware Ethernet address */
#endif MACH_KERNEL
int ns_flags;
#define DSF_LOCK 1 /* block re-entering enstart */
#define DSF_RUNNING 2
int ns_oactive ;
int ns_mask ;
int ns_ba; /* byte addr in buffer ram of inc pkt */
int ns_cur; /* current page being filled */
struct prhdr ns_ph; /* hardware header of incoming packet*/
struct ether_header ns_eh; /* header of incoming packet */
u_char ns_pb[2048 /*ETHERMTU+sizeof(long)*/];
short ns_txstart; /* transmitter buffer start */
short ns_rxend; /* recevier buffer end */
short ns_rxbndry; /* recevier buffer boundary */
caddr_t ns_port; /* i/o port base */
short ns_mode; /* word/byte mode */
int mode;
short card_present;
#ifndef MACH_KERNEL
ihandler_t handler;
ihandler_id_t *handler_id;
#endif MACH_KERNEL
} ne_softc_t;
ne_softc_t ne_softc[NNE];
#define PAT(n) (0xa55a + 37*(n))
u_short boarddata[16];
/*
* Fetch from onboard ROM/RAM
*/
nefetch (ns, up, ad, len) ne_softc_t *ns; caddr_t up; {
u_char cmd;
caddr_t nec = ns->ns_port;
int counter = 10000;
int t_len;
unsigned char last_word[2];
char odd;
cmd = inb (nec + ds_cmd);
outb (nec + ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_START);
/* Setup remote dma */
outb (nec + ds0_isr, DSIS_RDC);
t_len = len;
if ((ns->ns_mode & DSDC_WTS) && len&1) {
odd=1;
t_len++; /* roundup to words */
} else odd=0;
outb (nec+ds0_rbcr0, t_len);
outb (nec+ds0_rbcr1, t_len>>8);
outb (nec+ds0_rsar0, ad);
outb (nec+ds0_rsar1, ad>>8);
/* Execute & extract from card */
outb (nec+ds_cmd, DSCM_RREAD|DSCM_PG0|DSCM_START);
if (ns->ns_mode & DSDC_WTS)
if (odd) {
linw (nec+ne_data, up, len/2);
*(last_word) = inw(nec+ne_data); /* get last word */
*(up+len-1) = last_word[0]; /* last byte */
} else {
linw (nec+ne_data, up, len/2);
}
else
linb (nec+ne_data, up, len);
/* Wait till done, then shutdown feature */
while ((inb (nec+ds0_isr) & DSIS_RDC) == 0 && counter-- > 0)
;
outb (nec+ds0_isr, DSIS_RDC);
outb (nec+ds_cmd, cmd);
}
/*
* Put to onboard RAM
*/
neput (ns, up, ad, len) ne_softc_t *ns; caddr_t up; {
u_char cmd;
caddr_t nec = ns->ns_port;
int counter = 10000;
int t_len;
int odd;
unsigned char last_word[2];
cmd = inb(nec+ds_cmd);
outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_START);
/* Setup for remote dma */
outb (nec+ds0_isr, DSIS_RDC);
t_len = len;
if ((ns->ns_mode & DSDC_WTS) && len&1) {
odd = 1;
t_len++; /* roundup to words */
} else odd = 0;
outb (nec+ds0_rbcr0, t_len);
outb (nec+ds0_rbcr1, t_len>>8);
outb (nec+ds0_rsar0, ad);
outb (nec+ds0_rsar1, ad>>8);
/* Execute & stuff to card */
outb (nec+ds_cmd, DSCM_RWRITE|DSCM_PG0|DSCM_START);
if (ns->ns_mode & DSDC_WTS) {
if (odd) {
loutw (nec+ne_data, up, len/2);
last_word[0] = *(up+len-1);
outw (nec+ne_data, (unsigned short) *(last_word));
}
else {
loutw (nec+ne_data, up, len/2);
}
}
else
loutb (nec+ne_data, up, len);
/* Wait till done, then shutdown feature */
while ((inb (nec+ds0_isr) & DSIS_RDC) == 0 && counter-- > 0)
;
outb (nec+ds0_isr, DSIS_RDC);
outb (nec+ds_cmd, cmd);
}
int
neprobe(port, dev)
struct bus_device *dev;
{
int val, i, sum, bytemode = 1, pat;
int unit = dev->unit;
ne_softc_t *ns = &ne_softc[unit];
caddr_t nec;
if ((unsigned) unit >= NNE)
return(0);
nec = (caddr_t) ns->ns_port = dev->address;
if (ns->card_present) {
printf("ne%s : card already present in port %x\n",
unit, nec);
return(0);
}
if (bytemode) {
/* Byte Transfers, Burst Mode Select, Fifo at 8 bytes */
ns->ns_mode = DSDC_BMS|DSDC_FT1;
ns->ns_txstart = TBUF8;
ns->ns_rxend = RBUFEND8;
} else {
word:
/* Word Transfers, Burst Mode Select, Fifo at 8 bytes */
ns->ns_mode = DSDC_WTS|DSDC_BMS|DSDC_FT1;
ns->ns_txstart = TBUF16;
ns->ns_rxend = RBUFEND16;
bytemode = 0;
}
/* Reset the bastard */
val = inb(nec + ne_reset);
delay(200);
outb(nec + ne_reset, val);
delay(200);
outb(nec + ds_cmd, DSCM_STOP|DSCM_NODMA);
i = 10000;
while ((inb(nec + ds0_isr) & DSIS_RESET) == 0 && i-- > 0);
if (i < 0) return (0);
outb(nec + ds0_isr, 0xff);
outb(nec + ds0_dcr, ns->ns_mode);
outb(nec + ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_STOP);
delay(1000);
/* Check cmd reg and fail if not right */
if ((i = inb(nec + ds_cmd)) != (DSCM_NODMA|DSCM_PG0|DSCM_STOP))
return(0);
outb(nec + ds0_tcr, DSTC_LB0);
outb(nec + ds0_rcr, DSRC_MON);
outb(nec + ds0_pstart, ns->ns_txstart+PKTSZ);
outb(nec + ds0_pstop, ns->ns_rxend);
outb(nec + ds0_bnry, ns->ns_rxend);
outb(nec + ds0_imr, 0);
outb(nec + ds0_isr, 0);
outb(nec + ds_cmd, DSCM_NODMA|DSCM_PG1|DSCM_STOP);
outb(nec + ds1_curr, ns->ns_txstart+PKTSZ);
outb(nec + ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_STOP);
#ifdef NEDEBUG
#define RCON 37
{ int i, rom;
rom=1;
printf("ne ram ");
for (i = 0; i < 0xfff0; i+=4) {
pat = PAT(i);
neput(ns, &pat,i,4);
nefetch(ns, &pat,i,4);
if (pat == PAT(i)) {
if (rom) {
rom=0;
printf(" %x", i);
}
} else {
if (!rom) {
rom=1;
printf("..%x ", i);
}
}
pat=0;
neput(ns, &pat,i,4);
}
printf("\n");
}
#endif
/*
* <groan> detect difference between units
* solely by where the RAM is decoded.
*/
pat = PAT(0);
neput (ns, &pat, ns->ns_txstart*DS_PGSIZE, 4);
nefetch(ns, &pat, ns->ns_txstart*DS_PGSIZE, 4);
if (pat != PAT(0)) {
if (bytemode)
goto word;
else return (0);
}
/* Extract board address */
nefetch (ns, (caddr_t)boarddata, 0, sizeof(boarddata));
for(i=0; i < 6; i++)
ns->ds_addr[i] = boarddata[i];
ns->card_present = 1;
return (1);
}
/*
* Interface exists: make available by filling in network interface
* record. System will initialize the interface when it is ready
* to accept packets. We get the ethernet address here.
*/
void
neattach(dev)
struct bus_device *dev;
{
short unit = dev->unit;
ne_softc_t *ns = &ne_softc[unit];
register struct ifnet *ifp = &(ns->ds_if);
if ((unsigned) unit >= NNE)
return;
#ifdef MACH_KERNEL
take_dev_irq(dev);
#else MACH_KERNEL
/* setup intr handler */
ns->handler.ih_level = dev->dev_pic;
ns->handler.ih_handler = dev->dev_intr[0];
ns->handler.ih_resolver = i386_resolver;
ns->handler.ih_rdev = dev;
ns->handler.ih_stats.intr_type = INTR_DEVICE;
ns->handler.ih_stats.intr_cnt = 0;
ns->handler.ih_hparam[0].intparam = unit;
if ((ns->handler_id = handler_add(&ns->handler)) != NULL)
handler_enable(ns->handler_id);
else
panic("Unable to add NEx000 interrupt handler");
#endif MACH_KERNEL
printf (", port = %x, spl = %d, pic = %d, [%s].",
dev->address, dev->sysdep, dev->sysdep1,
ether_sprintf(ns->ds_addr));
#ifndef MACH_KERNEL
ns->ns_ac.ac_bcastaddr = (u_char *)etherbroadcastaddr;
ns->ns_ac.ac_arphrd = ARPHRD_ETHER;
#endif MACH_KERNEL
ns->ns_flags = 0;
ns->mode = 0;
ifp->if_unit = unit;
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST;
#ifdef MACH_KERNEL
ifp->if_header_size = sizeof(struct ether_header);
ifp->if_header_format = HDR_ETHERNET;
ifp->if_address_size = 6;
ifp->if_address = (char *)&ns->ds_addr[0];
if_init_queues(ifp);
#else MACH_KERNEL
ifp->if_name = nedriver.driver_dname;
ifp->if_init = neinit;
ifp->if_output = ether_output;
ifp->if_start = nestart;
ifp->if_ioctl = neioctl;
ifp->if_reset = nereset;
ifp->if_watchdog= 0;
if_attach(ifp);
#endif MACH_KERNEL
}
/*
* Initialization of interface; set up initialization block
* and transmit/receive descriptor rings.
*/
neinit(unit)
int unit;
{
ne_softc_t *ns = &ne_softc[unit];
struct ifnet *ifp = &ns->ds_if;
int i; char *cp;
int oldpri;
caddr_t nec = ns->ns_port;
#ifndef MACH_KERNEL
if (ifp->if_addrlist == (struct ifaddr *)0) return;
#endif MACH_KERNEL
oldpri = SPLNET();
outb(nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_STOP);
/* Word Transfer select, Burst Mode Select, Fifo at 8 bytes */
outb(nec+ds0_dcr, ns->ns_mode);
/* clear remote byte count resigters */
outb (nec+ds0_rbcr0, 0);
outb (nec+ds0_rbcr1, 0);
/* don't store incoming packets into memory for now */
outb (nec+ds0_rcr, DSRC_MON);
/* place NIC in internal loopback mode */
outb(nec+ds0_tcr, DSTC_LB0);
/* initialize transmit/recieve (ring-buffer) Page Start */
outb (nec+ds0_tpsr, 0);
outb (nec+ds0_pstart, ns->ns_txstart+PKTSZ);
/* initialize reciever (ring-buffer) Page Stop and Boundary */
outb (nec+ds0_pstop, ns->ns_rxend);
outb (nec+ds0_bnry, ns->ns_txstart+PKTSZ);
/* clear all interrupts */
outb (nec+ds0_isr, 0xff);
/* enable the interrupts that we care about */
outb (nec+ds0_imr, IMR_ENABLE);
/* set physical address on ethernet */
outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG1|DSCM_STOP);
for (i=0 ; i < 6 ; i++) outb(nec+ds1_par0+i,ns->ds_addr[i]);
ns->ns_cur = ns->ns_txstart+PKTSZ + 1;
outb (nec+ds1_curr, ns->ns_cur);
/* XXX deal with Reciever Configuration Register */
/* clr logical address hash filter for now */
for (i=0 ; i < 8 ; i++) outb(nec+ds1_mar0+i,0xff);
/* set page 0 registers */
outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_STOP);
outb (nec+ds0_rcr, DSRC_AB);
/* take unit out of loopback mode */
outb (nec+ds0_tcr, 0);
ns->ds_if.if_flags |= IFF_RUNNING;
ns->ns_flags &= ~(DSF_LOCK|DSF_RUNNING);
ns->ns_oactive = 0; ns->ns_mask = ~0;
splx(oldpri);
nestart(unit);
return(1);
}
/*
* Setup output on interface.
* Get another datagram to send off of the interface queue,
* and map it to the interface before starting the output.
* called only at splimp or interrupt level.
*/
nestart(unit)
int unit;
{
ne_softc_t *ns = &ne_softc[unit];
struct ifnet *ifp = &ns->ds_if;
int buffer;
int len, i, total,t;
caddr_t nec = ns->ns_port;
#ifdef MACH_KERNEL
io_req_t m;
#else MACH_KERNEL
struct mbuf *m0, *m;
#endif MACH_KERNEL
/*
* The DS8390 has only one transmit buffer, if it is busy we
* must wait until the transmit interrupt completes.
*/
outb(nec+ds_cmd,DSCM_NODMA|DSCM_START);
if (ns->ns_flags & DSF_LOCK)
goto done;
if (inb(nec+ds_cmd) & DSCM_TRANS)
goto done;
if ((ns->ds_if.if_flags & IFF_RUNNING) == 0)
goto done;
IF_DEQUEUE(&ns->ds_if.if_snd, m);
if (m == 0)
goto done;
/*
* Copy the mbuf chain into the transmit buffer
*/
ns->ns_flags |= DSF_LOCK; /* prevent entering nestart */
buffer = ns->ns_txstart*DS_PGSIZE;
#ifdef MACH_KERNEL
total = m->io_count;
neput(ns, m->io_data, buffer, total);
#else MACH_KERNEL
t = 0; len = i = 0;
for (m0 = m; m != 0; m = m->m_next)
t += m->m_len;
m = m0;
total = t;
for (m0 = m; m != 0; ) {
if (m->m_len&1 && t > m->m_len) {
neput(ns, mtod(m, caddr_t), buffer, m->m_len - 1);
t -= m->m_len - 1;
buffer += m->m_len - 1;
m->m_data += m->m_len - 1;
m->m_len = 1;
m = m_pullup(m, 2);
} else {
neput(ns, mtod(m, caddr_t), buffer, m->m_len);
buffer += m->m_len;
t -= m->m_len;
MFREE(m, m0);
m = m0;
}
}
#endif MACH_KERNEL
/*
* Init transmit length registers, and set transmit start flag.
*/
len = total;
if (len < ETHER_MIN_LEN) len = ETHER_MIN_LEN;
outb(nec+ds0_tbcr0,len&0xff);
outb(nec+ds0_tbcr1,(len>>8)&0xff);
outb(nec+ds0_tpsr, ns->ns_txstart);
outb(nec+ds_cmd, DSCM_TRANS|DSCM_NODMA|DSCM_START);
#ifdef MACH_KERNEL
iodone(m);
m = 0;
done:
#endif MACH_KERNEL
}
/* buffer successor/predecessor in ring? */
#define succ(n) (((n)+1 >= ns->ns_rxend) ? (ns->ns_txstart+PKTSZ) : (n)+1)
#define pred(n) (((n)-1 < (ns->ns_txstart+PKTSZ)) ? ns->ns_rxend-1 : (n)-1)
/*
* Controller interrupt.
*/
neintr(unit)
{
ne_softc_t *ns = &ne_softc[unit];
u_char cmd,isr;
caddr_t nec = ns->ns_port;
/* Save cmd, clear interrupt */
cmd = inb (nec+ds_cmd);
isr = inb (nec+ds0_isr);
loop:
outb(nec+ds_cmd,DSCM_NODMA|DSCM_START);
outb(nec+ds0_isr, isr);
/* Receiver error */
if (isr & DSIS_RXE) {
(void) inb(nec+ds0_rsr);
/* need to read these registers to clear status */
ns->ds_if.if_ierrors++;
}
/* Counters overflowed, reading the registers resets them */
if (isr & DSIS_CTRS) {
(void) inb(nec+ds0_cntr0);
(void) inb(nec+ds0_cntr1);
(void) inb(nec+ds0_cntr2);
}
/* We received something; rummage thru tiny ring buffer */
if (isr & (DSIS_RX|DSIS_RXE|DSIS_ROVRN)) {
u_char pend,lastfree;
outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG1);
pend = inb(nec+ds1_curr);
outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG0);
/* Something in the buffer? */
while (pend != ns->ns_cur) {
/* Extract header from microcephalic board */
nefetch(ns, &ns->ns_ph,ns->ns_cur*DS_PGSIZE,
sizeof(ns->ns_ph));
ns->ns_ba = ns->ns_cur*DS_PGSIZE+sizeof(ns->ns_ph);
/* Incipient paranoia */
if (ns->ns_ph.pr_status == DSRS_RPC ||
/* for dequna's */
ns->ns_ph.pr_status == 0x21) {
if (nerecv(ns))
ns->ns_cur = ns->ns_ph.pr_nxtpg ;
else {
outb(nec+ds0_bnry, pred(ns->ns_cur));
goto short_load;
}
}
#ifdef NEDEBUG
else {
printf("cur %x pnd %x lfr %x ",
ns->ns_cur, pend, lastfree);
printf("nxt %x len %x ", ns->ns_ph.pr_nxtpg,
(ns->ns_ph.pr_sz1<<8)+ ns->ns_ph.pr_sz0);
printf("Bogus Sts %x\n", ns->ns_ph.pr_status);
ns->ns_cur = pend;
}
#endif
outb(nec+ds0_bnry, pred(ns->ns_cur));
outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG1);
pend = inb(nec+ds1_curr);
outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG0);
}
short_load:
outb(nec+ds_cmd, DSCM_START|DSCM_NODMA);
}
/* Transmit error */
if (isr & DSIS_TXE) {
ns->ns_flags &= ~DSF_LOCK;
/* Need to read these registers to clear status */
ns->ds_if.if_collisions += inb(nec+ds0_tbcr0);
ns->ds_if.if_oerrors++;
}
/* Packet Transmitted */
if (isr & DSIS_TX) {
ns->ns_flags &= ~DSF_LOCK;
++ns->ds_if.if_opackets;
ns->ds_if.if_collisions += inb(nec+ds0_tbcr0);
}
/* Receiver ovverun? */
if (isr & DSIS_ROVRN) {
outb(nec+ds0_rbcr0, 0);
outb(nec+ds0_rbcr1, 0);
outb(nec+ds0_tcr, DSTC_LB0);
outb(nec+ds0_rcr, DSRC_MON);
outb(nec+ds_cmd, DSCM_START|DSCM_NODMA);
outb(nec+ds0_rcr, DSRC_AB);
outb(nec+ds0_tcr, 0);
}
/* Any more to send? */
outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_START);
nestart(unit);
outb (nec+ds_cmd, cmd);
outb (nec+ds0_imr, IMR_ENABLE);
/* Still more to do? */
isr = inb (nec+ds0_isr);
if(isr) goto loop;
return 0;
}
/*
* Ethernet interface receiver interface.
* If input error just drop packet.
* Otherwise examine packet to determine type. If can't determine length
* from type, then have to drop packet. Othewise decapsulate
* packet based on type and pass to type specific higher-level
* input routine.
*/
nerecv(ns)
ne_softc_t *ns;
{
#ifdef MACH_KERNEL
ipc_kmsg_t new_kmsg;
struct ether_header *ehp;
struct packet_header *pkt;
register struct ifnet *ifp = &ns->ds_if;
#ifdef FIPC
char *fipc_buf;
#endif
#else MACH_KERNEL
struct mbuf *top, **mp, *m, *p;
#endif MACH_KERNEL
int len, l;
int epkt;
ns->ds_if.if_ipackets++;
len = ns->ns_ph.pr_sz0 + (ns->ns_ph.pr_sz1<<8);
if(len < ETHER_MIN_LEN || len > ETHER_MAX_LEN)
return 0;
nefetch(ns, &ns->ns_eh, ns->ns_ba, sizeof(struct ether_header));
#ifndef MACH_KERNEL
ns->ns_eh.ether_type = ntohs((u_short)ns->ns_eh.ether_type);
#endif MACH_KERNEL
ns->ns_ba += sizeof(struct ether_header);
/* don't forget checksum! */
len -= (sizeof(struct ether_header) + sizeof(long));
#ifdef MACH_KERNEL
#ifdef FIPC
if (ns->ns_eh.ether_type == FIPC_MSG_TYPE) /* fipc packet */
{
/* We need to hand the whole packet to the handler. */
fipc_recvs++;
fipc_buf = get_fipc_buffer (len, TRUE, TRUE);
if (fipc_buf == NULL)
{
ns->ds_if.if_rcvdrops++;
return(0);
}
nefetch (ns, fipc_buf, ns->ns_ba, len);
fipc_packet (fipc_buf, ns->ns_eh);
}
else /* net_kmsg */
{
#endif /* FIPC */
new_kmsg = net_kmsg_get();
if (new_kmsg == IKM_NULL) {
ns->ds_if.if_rcvdrops++;
return(0);
}
ehp = (struct ether_header *) (&net_kmsg(new_kmsg)->header[0]);
pkt = (struct packet_header *)(&net_kmsg(new_kmsg)->packet[0]);
*ehp = ns->ns_eh;
nefetch(ns, (char *) (pkt + 1), ns->ns_ba, len);
pkt->type = ehp->ether_type;
pkt->length = len + sizeof(struct packet_header);
net_packet(ifp, new_kmsg, pkt->length, ethernet_priority(new_kmsg));
#ifdef FIPC
}
#endif
#else MACH_KERNEL
/**/
epkt = ns->ns_ba + len;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == 0)
return (0);
m->m_pkthdr.rcvif = &ns->ds_if;
m->m_pkthdr.len = len;
m->m_len = MHLEN;
top = 0;
mp = ⊤
while (len > 0) {
if (top) {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == 0) {
m_freem(top);
return (0);
}
m->m_len = MLEN;
}
l = min(len, epkt - ns->ns_ba);
if (l >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
m->m_len = l = min(len, MCLBYTES);
else
l = m->m_len;
} else {
/*
* Place initial small packet/header at end of mbuf.
*/
if (l < m->m_len) {
if (top == 0 && len + max_linkhdr <= m->m_len)
m->m_data += max_linkhdr;
m->m_len = l;
} else
l = m->m_len;
}
nefetch(ns, mtod(m, caddr_t), ns->ns_ba, l);
ns->ns_ba += l;
*mp = m;
mp = &m->m_next;
len -= l;
}
/**/
if (top == 0) return 0; /* NEED MODIFY HERE !!! */
ether_input(&ns->ds_if, &ns->ns_eh, top);
#endif MACH_KERNEL
return 1;
}
#ifdef MACH_KERNEL
neopen(dev, flag)
dev_t dev;
int flag;
{
register int unit = minor(dev);
if (!ne_softc[unit].card_present || unit < 0 || unit >= NNE)
return (ENXIO);
ne_softc[unit].ds_if.if_flags |= IFF_UP;
neinit(unit);
return(0);
}
#ifdef FIPC
nefoutput(dev, ior)
dev_t dev;
io_req_t ior;
{
register int unit = minor(dev);
if (!ne_softc[unit].card_present || unit < 0 || unit >= NNE)
return (ENXIO);
return (net_fwrite(&ne_softc[unit].ds_if, nestart, ior));
}
#endif
neoutput(dev, ior)
dev_t dev;
io_req_t ior;
{
register int unit = minor(dev);
if (!ne_softc[unit].card_present || unit < 0 || unit >= NNE)
return (ENXIO);
return (net_write(&ne_softc[unit].ds_if, nestart, ior));
}
nesetinput(dev, receive_port, priority, filter, filter_count)
dev_t dev;
mach_port_t receive_port;
int priority;
filter_t filter[];
unsigned int filter_count;
{
register int unit = minor(dev);
if (!ne_softc[unit].card_present || unit < 0 || unit >= NNE)
return (ENXIO);
return (net_set_filter(&ne_softc[unit].ds_if,
receive_port, priority,
filter, filter_count));
}
negetstat(dev, flavor, status, count)
dev_t dev;
int flavor;
dev_status_t status;
unsigned int *count;
{
register int unit = minor(dev);
if (!ne_softc[unit].card_present || unit < 0 || unit >= NNE)
return (ENXIO);
return (net_getstat(&ne_softc[unit].ds_if,
flavor,
status,
count));
}
nesetstat(dev, flavor, status, count)
dev_t dev;
int flavor;
dev_status_t status;
unsigned int count;
{
register int unit = minor(dev);
register ne_softc_t *ns;
if (!ne_softc[unit].card_present || unit < 0 || unit >= NNE)
return (ENXIO);
ns = &ne_softc[unit];
switch(flavor) {
case NET_STATUS: {
register struct net_status *s = (struct net_status *)status;
int mode = 0;
if (count < NET_STATUS_COUNT)
return(D_INVALID_SIZE);
#define MOD_ENAL 1
#define MOD_PROM 2
if (s->flags & IFF_ALLMULTI)
mode |= MOD_ENAL;
if (s->flags & IFF_PROMISC)
mode |= MOD_PROM;
if (ns->mode != mode) {
ns->mode = mode;
if (ns->ns_flags & DSF_RUNNING) {
ns->ns_flags &= ~(DSF_LOCK | DSF_RUNNING);
neinit(unit);
}
}
break;
}
default :
return (D_INVALID_OPERATION);
}
return (D_SUCCESS);
}
#else MACH_KERNEL
/*
* Process an ioctl request.
*/
neioctl(ifp, cmd, data)
register struct ifnet *ifp;
int cmd;
caddr_t data;
{
register struct ifaddr *ifa = (struct ifaddr *)data;
ne_softc_t *ns = &ne_softc[ifp->if_unit];
struct ifreq *ifr = (struct ifreq *)data;
int s = splimp(), error = 0;
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
neinit(ifp->if_unit); /* before arpwhohas */
((struct arpcom *)ifp)->ac_ipaddr =
IA_SIN(ifa)->sin_addr;
arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr);
break;
case AF_NS:
{
register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
if (ns_nullhost(*ina))
ina->x_host = *(union ns_host *)(ns->ds_addr);
else {
/*
* The manual says we can't change the address
* while the receiver is armed,
* so reset everything
*/
ifp->if_flags &= ~IFF_RUNNING;
bcopy((caddr_t)ina->x_host.c_host,
(caddr_t)ns->ds_addr, sizeof(ns->ds_addr));
}
neinit(ifp->if_unit); /* does ne_setaddr() */
break;
}
default:
neinit(ifp->if_unit);
break;
}
break;
case SIOCSIFFLAGS:
if ((ifp->if_flags & IFF_UP) == 0 &&
ifp->if_flags & IFF_RUNNING) {
ifp->if_flags &= ~IFF_RUNNING;
outb(ns->ns_port + ds_cmd, DSCM_STOP|DSCM_NODMA);
} else if (ifp->if_flags & IFF_UP &&
(ifp->if_flags & IFF_RUNNING) == 0)
neinit(ifp->if_unit);
break;
#ifdef notdef
case SIOCGHWADDR:
bcopy((caddr_t)ns->ds_addr, (caddr_t) &ifr->ifr_data,
sizeof(ns->ds_addr));
break;
#endif
default:
error = EINVAL;
}
splx(s);
return (error);
}
/*
* Reset of interface.
*/
nereset(unit, uban)
int unit, uban;
{
if (unit >= NNE)
return;
printf("ne%d: reset\n", unit);
ne_softc[unit].ns_flags &= ~DSF_LOCK;
neinit(unit);
}
#endif MACH_KERNEL
#endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.