95b44faffd
so that the interface won't have the effect of blocking other senders during bulk transfers (i.e. hogging the ethernet). It improves performance in all of my tests by reducing collisions and I believe it to be a Good Thing.
1164 lines
33 KiB
C
1164 lines
33 KiB
C
/*-
|
||
* Copyright (c) 1994 Matt Thomas (thomas@lkg.dec.com)
|
||
* 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. The name of the author may not be used to endorse or promote products
|
||
* derived from this software withough specific prior written permission
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
||
*
|
||
* $Id: if_de.c,v 1.15 1995/02/02 13:12:13 davidg Exp $
|
||
*
|
||
*/
|
||
|
||
/*
|
||
* DEC DC21040 PCI Ethernet Controller
|
||
*
|
||
* Written by Matt Thomas
|
||
* BPF support code stolen directly from if_ec.c
|
||
*
|
||
* This driver supports the DEC DE435 or any other PCI
|
||
* board which support DC21040.
|
||
*/
|
||
|
||
#include "de.h"
|
||
#if NDE > 0
|
||
|
||
#include <sys/param.h>
|
||
#include <sys/systm.h>
|
||
#include <sys/mbuf.h>
|
||
#include <sys/protosw.h>
|
||
#include <sys/socket.h>
|
||
#include <sys/ioctl.h>
|
||
#include <sys/errno.h>
|
||
#include <sys/malloc.h>
|
||
#include <sys/kernel.h>
|
||
#include <machine/clock.h>
|
||
|
||
#include <net/if.h>
|
||
#include <net/if_types.h>
|
||
#include <net/if_dl.h>
|
||
#include <net/route.h>
|
||
|
||
#include "bpfilter.h"
|
||
#if NBPFILTER > 0
|
||
#include <net/bpf.h>
|
||
#include <net/bpfdesc.h>
|
||
#endif
|
||
|
||
#ifdef INET
|
||
#include <netinet/in.h>
|
||
#include <netinet/in_systm.h>
|
||
#include <netinet/in_var.h>
|
||
#include <netinet/ip.h>
|
||
#include <netinet/if_ether.h>
|
||
#endif
|
||
|
||
#ifdef NS
|
||
#include <netns/ns.h>
|
||
#include <netns/ns_if.h>
|
||
#endif
|
||
|
||
#include <vm/vm.h>
|
||
#include <vm/vm_kern.h>
|
||
#include <vm/vm_param.h>
|
||
|
||
|
||
#include <pci.h>
|
||
#if NPCI > 0
|
||
#include <pci/pcivar.h>
|
||
#endif
|
||
|
||
#include <pci/dc21040.h>
|
||
|
||
/*
|
||
* This module supports the DEC DC21040 PCI Ethernet Controller.
|
||
*/
|
||
|
||
typedef struct {
|
||
unsigned long addr;
|
||
unsigned long length;
|
||
} tulip_addrvec_t;
|
||
|
||
typedef struct {
|
||
tulip_desc_t *ri_first;
|
||
tulip_desc_t *ri_last;
|
||
tulip_desc_t *ri_nextin;
|
||
tulip_desc_t *ri_nextout;
|
||
int ri_max;
|
||
int ri_free;
|
||
} tulip_ringinfo_t;
|
||
|
||
typedef struct {
|
||
volatile tulip_uint32_t *csr_busmode; /* CSR0 */
|
||
volatile tulip_uint32_t *csr_txpoll; /* CSR1 */
|
||
volatile tulip_uint32_t *csr_rxpoll; /* CSR2 */
|
||
volatile tulip_uint32_t *csr_rxlist; /* CSR3 */
|
||
volatile tulip_uint32_t *csr_txlist; /* CSR4 */
|
||
volatile tulip_uint32_t *csr_status; /* CSR5 */
|
||
volatile tulip_uint32_t *csr_command; /* CSR6 */
|
||
volatile tulip_uint32_t *csr_intr; /* CSR7 */
|
||
volatile tulip_uint32_t *csr_missed_frame; /* CSR8 */
|
||
volatile tulip_sint32_t *csr_enetrom; /* CSR9 */
|
||
volatile tulip_uint32_t *csr_reserved; /* CSR10 */
|
||
volatile tulip_uint32_t *csr_full_duplex; /* CSR11 */
|
||
volatile tulip_uint32_t *csr_sia_status; /* CSR12 */
|
||
volatile tulip_uint32_t *csr_sia_connectivity; /* CSR13 */
|
||
volatile tulip_uint32_t *csr_sia_tx_rx; /* CSR14 */
|
||
volatile tulip_uint32_t *csr_sia_general; /* CSR15 */
|
||
} tulip_regfile_t;
|
||
|
||
/*
|
||
* The DC21040 has a stupid restriction in that the receive
|
||
* buffers must be longword aligned. But since Ethernet
|
||
* headers are not a multiple of longwords in size this forces
|
||
* the data to non-longword aligned. Since IP requires the
|
||
* data to be longword aligned, we need to copy it after it has
|
||
* been DMA'ed in our memory.
|
||
*
|
||
* Since we have to copy it anyways, we might as well as allocate
|
||
* dedicated receive space for the input. This allows to use a
|
||
* small receive buffer size and more ring entries to be able to
|
||
* better keep with a flood of tiny Ethernet packets.
|
||
*
|
||
* The receive space MUST ALWAYS be a multiple of the page size.
|
||
* And the number of receive descriptors multiplied by the size
|
||
* of the receive buffers must equal the recevive space. This
|
||
* is so that we can manipulate the page tables so that even if a
|
||
* packet wraps around the end of the receive space, we can
|
||
* treat it as virtually contiguous.
|
||
*/
|
||
#define TULIP_RXBUFSIZE 512
|
||
#define TULIP_RXDESCS 128
|
||
#define TULIP_RXSPACE (TULIP_RXBUFSIZE * TULIP_RXDESCS)
|
||
#define TULIP_TXDESCS 128
|
||
|
||
typedef struct {
|
||
struct arpcom tulip_ac;
|
||
tulip_regfile_t tulip_csrs;
|
||
vm_offset_t tulip_rxspace;
|
||
unsigned tulip_flags;
|
||
#define TULIP_WANTSETUP 0x01
|
||
#define TULIP_WANTHASH 0x02
|
||
#define TULIP_DOINGSETUP 0x04
|
||
#define TULIP_ALTPHYS 0x08 /* use AUI */
|
||
unsigned char tulip_rombuf[32];
|
||
tulip_uint32_t tulip_setupbuf[192/sizeof(tulip_uint32_t)];
|
||
tulip_uint32_t tulip_setupdata[192/sizeof(tulip_uint32_t)];
|
||
tulip_uint32_t tulip_intrmask;
|
||
tulip_uint32_t tulip_cmdmode;
|
||
tulip_uint32_t tulip_revinfo;
|
||
#if NBPFILTER > 0
|
||
caddr_t tulip_bpf; /* BPF context */
|
||
#endif
|
||
struct ifqueue tulip_txq;
|
||
tulip_ringinfo_t tulip_rxinfo;
|
||
tulip_ringinfo_t tulip_txinfo;
|
||
} tulip_softc_t;
|
||
|
||
#ifndef IFF_ALTPHYS
|
||
#define IFF_ALTPHYS IFF_LINK0 /* In case it isn't defined */
|
||
#endif
|
||
typedef enum { TULIP_DC21040, TULIP_DC21140 } tulip_chipid_t;
|
||
const char *tulip_chipdescs[] = {
|
||
"DC21040 [10Mb/s]",
|
||
"DC21140 [100Mb/s]",
|
||
};
|
||
|
||
tulip_softc_t *tulips[NDE];
|
||
tulip_chipid_t tulip_chipids[NDE];
|
||
|
||
#define tulip_if tulip_ac.ac_if
|
||
#define tulip_unit tulip_ac.ac_if.if_unit
|
||
#define tulip_name tulip_ac.ac_if.if_name
|
||
#define tulip_hwaddr tulip_ac.ac_enaddr
|
||
|
||
#define TULIP_CRC32_POLY 0xEDB88320UL /* CRC-32 Poly -- Little Endian */
|
||
#define TULIP_CHECK_RXCRC 0
|
||
#define TULIP_MAX_TXSEG 30
|
||
|
||
#define TULIP_ADDREQUAL(a1, a2) \
|
||
(((u_short *)a1)[0] == ((u_short *)a2)[0] \
|
||
&& ((u_short *)a1)[1] == ((u_short *)a2)[1] \
|
||
&& ((u_short *)a1)[2] == ((u_short *)a2)[2])
|
||
#define TULIP_ADDRBRDCST(a1) \
|
||
(((u_short *)a1)[0] == 0xFFFFU \
|
||
&& ((u_short *)a1)[1] == 0xFFFFU \
|
||
&& ((u_short *)a1)[2] == 0xFFFFU)
|
||
|
||
static void tulip_start(struct ifnet *ifp);
|
||
static void tulip_addr_filter(tulip_softc_t *sc);
|
||
|
||
#if __FreeBSD__ > 1
|
||
#define TULIP_IFRESET_ARGS int unit
|
||
#define TULIP_RESET(sc) tulip_reset((sc)->tulip_unit)
|
||
#else
|
||
#define TULIP_IFRESET_ARGS int unit, int uban
|
||
#define TULIP_RESET(sc) tulip_reset((sc)->tulip_unit, 0)
|
||
#endif
|
||
|
||
static void
|
||
tulip_reset(
|
||
TULIP_IFRESET_ARGS)
|
||
{
|
||
tulip_softc_t *sc = tulips[unit];
|
||
tulip_ringinfo_t *ri;
|
||
tulip_desc_t *di;
|
||
vm_offset_t vmoff;
|
||
|
||
*sc->tulip_csrs.csr_busmode = TULIP_BUSMODE_SWRESET;
|
||
DELAY(10); /* Wait 10 microsends (actually 50 PCI cycles but at
|
||
33MHz that comes to two microseconds but wait a
|
||
bit longer anyways) */
|
||
|
||
/*
|
||
* Use the
|
||
*/
|
||
*sc->tulip_csrs.csr_sia_connectivity = TULIP_SIACONN_RESET;
|
||
if (sc->tulip_if.if_flags & IFF_ALTPHYS) {
|
||
if ((sc->tulip_flags & TULIP_ALTPHYS) == 0)
|
||
printf("%s%d: enabling Thinwire/AUI port\n",
|
||
sc->tulip_if.if_name, sc->tulip_if.if_unit);
|
||
*sc->tulip_csrs.csr_sia_connectivity = TULIP_SIACONN_AUI;
|
||
sc->tulip_flags |= TULIP_ALTPHYS;
|
||
} else {
|
||
if (sc->tulip_flags & TULIP_ALTPHYS)
|
||
printf("%s%d: enabling 10baseT/UTP port\n",
|
||
sc->tulip_if.if_name, sc->tulip_if.if_unit);
|
||
*sc->tulip_csrs.csr_sia_connectivity = TULIP_SIACONN_10BASET;
|
||
sc->tulip_flags &= ~TULIP_ALTPHYS;
|
||
}
|
||
*sc->tulip_csrs.csr_txlist = vtophys(&sc->tulip_txinfo.ri_first[0]);
|
||
*sc->tulip_csrs.csr_rxlist = vtophys(&sc->tulip_rxinfo.ri_first[0]);
|
||
*sc->tulip_csrs.csr_intr = 0;
|
||
*sc->tulip_csrs.csr_busmode = 0x4800;
|
||
|
||
sc->tulip_txq.ifq_maxlen = TULIP_TXDESCS;
|
||
/*
|
||
* Free all the mbufs that were on the transmit ring.
|
||
*/
|
||
for (;;) {
|
||
struct mbuf *m;
|
||
IF_DEQUEUE(&sc->tulip_txq, m);
|
||
if (m == NULL)
|
||
break;
|
||
m_freem(m);
|
||
}
|
||
|
||
ri = &sc->tulip_txinfo;
|
||
ri->ri_nextin = ri->ri_nextout = ri->ri_first;
|
||
ri->ri_free = ri->ri_max;
|
||
for (di = ri->ri_first; di < ri->ri_last; di++)
|
||
di->d_status = 0;
|
||
|
||
/*
|
||
* We need to collect all the mbufs were on the
|
||
* receive ring before we reinit it either to put
|
||
* them back on or to know if we have to allocate
|
||
* more.
|
||
*/
|
||
ri = &sc->tulip_rxinfo;
|
||
ri->ri_nextin = ri->ri_nextout = ri->ri_first;
|
||
ri->ri_free = ri->ri_max;
|
||
for (vmoff = vtophys(sc->tulip_rxspace), di = ri->ri_first;
|
||
di < ri->ri_last; di++, vmoff += TULIP_RXBUFSIZE) {
|
||
di->d_status |= TULIP_DSTS_OWNER;
|
||
di->d_length1 = TULIP_RXBUFSIZE; di->d_addr1 = vmoff;
|
||
di->d_length2 = 0; di->d_addr2 = 0;
|
||
}
|
||
|
||
sc->tulip_intrmask = TULIP_STS_NORMALINTR|TULIP_STS_RXINTR|TULIP_STS_TXINTR
|
||
|TULIP_STS_ABNRMLINTR|TULIP_STS_SYSERROR|TULIP_STS_TXSTOPPED
|
||
|TULIP_STS_TXBABBLE|TULIP_STS_LINKFAIL|TULIP_STS_RXSTOPPED;
|
||
sc->tulip_flags &= ~(TULIP_DOINGSETUP|TULIP_WANTSETUP);
|
||
tulip_addr_filter(sc);
|
||
}
|
||
|
||
static void
|
||
tulip_init(
|
||
int unit)
|
||
{
|
||
tulip_softc_t *sc = tulips[unit];
|
||
|
||
if (sc->tulip_if.if_flags & IFF_UP) {
|
||
sc->tulip_if.if_flags |= IFF_RUNNING;
|
||
if (sc->tulip_if.if_flags & IFF_PROMISC) {
|
||
sc->tulip_cmdmode |= TULIP_CMD_PROMISCUOUS;
|
||
} else {
|
||
sc->tulip_cmdmode &= ~TULIP_CMD_PROMISCUOUS;
|
||
if (sc->tulip_if.if_flags & IFF_ALLMULTI) {
|
||
sc->tulip_cmdmode |= TULIP_CMD_ALLMULTI;
|
||
} else {
|
||
sc->tulip_cmdmode &= ~TULIP_CMD_ALLMULTI;
|
||
}
|
||
}
|
||
sc->tulip_cmdmode |= TULIP_CMD_TXRUN;
|
||
if ((sc->tulip_flags & TULIP_WANTSETUP) == 0) {
|
||
sc->tulip_cmdmode |= TULIP_CMD_RXRUN;
|
||
sc->tulip_intrmask |= TULIP_STS_RXSTOPPED;
|
||
} else {
|
||
sc->tulip_intrmask &= ~TULIP_STS_RXSTOPPED;
|
||
tulip_start(&sc->tulip_if);
|
||
}
|
||
sc->tulip_cmdmode |= TULIP_CMD_THRSHLD160;
|
||
sc->tulip_cmdmode |= TULIP_CMD_CAPTREFFCT;
|
||
*sc->tulip_csrs.csr_intr = sc->tulip_intrmask;
|
||
*sc->tulip_csrs.csr_command = sc->tulip_cmdmode;
|
||
} else {
|
||
TULIP_RESET(sc);
|
||
sc->tulip_if.if_flags &= ~IFF_RUNNING;
|
||
}
|
||
}
|
||
|
||
|
||
#if TULIP_CHECK_RXCRC
|
||
static unsigned
|
||
tulip_crc32(
|
||
u_char *addr,
|
||
int len)
|
||
{
|
||
unsigned int crc = 0xFFFFFFFF;
|
||
static unsigned int crctbl[256];
|
||
int idx;
|
||
static int done;
|
||
/*
|
||
* initialize the multicast address CRC table
|
||
*/
|
||
for (idx = 0; !done && idx < 256; idx++) {
|
||
unsigned int tmp = idx;
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
tmp = (tmp >> 1) ^ (tmp & 1 ? TULIP_CRC32_POLY : 0); /* XOR */
|
||
crctbl[idx] = tmp;
|
||
}
|
||
done = 1;
|
||
|
||
while (len-- > 0)
|
||
crc = (crc >> 8) ^ crctbl[*addr++] ^ crctbl[crc & 0xFF];
|
||
|
||
return crc;
|
||
}
|
||
#endif
|
||
|
||
static void
|
||
tulip_rx_intr(
|
||
tulip_softc_t *sc)
|
||
{
|
||
tulip_ringinfo_t *ri = &sc->tulip_rxinfo;
|
||
struct ifnet *ifp = &sc->tulip_if;
|
||
|
||
for (;;) {
|
||
tulip_desc_t *eop;
|
||
int total_len, ndescs;
|
||
caddr_t bufaddr = (caddr_t) sc->tulip_rxspace;
|
||
|
||
for (ndescs = 1, eop = ri->ri_nextin;; ndescs++) {
|
||
if (((volatile tulip_desc_t *) eop)->d_status & TULIP_DSTS_OWNER)
|
||
return;
|
||
|
||
if (eop->d_status & TULIP_DSTS_RxLASTDESC)
|
||
break;
|
||
if (++eop == ri->ri_last)
|
||
eop = ri->ri_first;
|
||
}
|
||
|
||
bufaddr += TULIP_RXBUFSIZE * (ri->ri_nextin - ri->ri_first);
|
||
total_len = ((eop->d_status >> 16) & 0x7FF) - 4;
|
||
|
||
if ((eop->d_status & TULIP_DSTS_ERRSUM) == 0) {
|
||
struct ether_header eh;
|
||
struct mbuf *m;
|
||
|
||
#if TULIP_CHECK_RXCRC
|
||
unsigned crc = tulip_crc32(bufaddr, total_len);
|
||
if (~crc != *((unsigned *) &bufaddr[total_len])) {
|
||
printf("de0: bad rx crc: %08x [rx] != %08x\n",
|
||
*((unsigned *) &bufaddr[total_len]), ~crc);
|
||
goto next;
|
||
}
|
||
#endif
|
||
eh = *(struct ether_header *) bufaddr;
|
||
#if NBPFILTER > 0
|
||
if (sc->tulip_bpf != NULL) {
|
||
bpf_tap(sc->tulip_bpf, bufaddr, total_len);
|
||
if ((eh.ether_dhost[0] & 1) == 0 &&
|
||
!TULIP_ADDREQUAL(eh.ether_dhost, sc->tulip_ac.ac_enaddr))
|
||
goto next;
|
||
} else if (!TULIP_ADDREQUAL(eh.ether_dhost, sc->tulip_ac.ac_enaddr)
|
||
&& !TULIP_ADDRBRDCST(eh.ether_dhost)) {
|
||
goto next;
|
||
}
|
||
#endif
|
||
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
||
if (m != NULL) {
|
||
m->m_pkthdr.rcvif = ifp;
|
||
total_len -= sizeof(eh);
|
||
if (total_len > MHLEN) {
|
||
MCLGET(m, M_DONTWAIT);
|
||
if ((m->m_flags & M_EXT) == 0) {
|
||
m_freem(m);
|
||
ifp->if_ierrors++;
|
||
goto next;
|
||
}
|
||
}
|
||
bcopy(bufaddr + sizeof(eh), mtod(m, caddr_t), total_len);
|
||
m->m_len = m->m_pkthdr.len = total_len;
|
||
ether_input(ifp, &eh, m);
|
||
} else {
|
||
ifp->if_ierrors++;
|
||
}
|
||
} else {
|
||
ifp->if_ierrors++;
|
||
}
|
||
next:
|
||
ifp->if_ipackets++;
|
||
while (ndescs-- > 0) {
|
||
ri->ri_nextin->d_status |= TULIP_DSTS_OWNER;
|
||
if (++ri->ri_nextin == ri->ri_last)
|
||
ri->ri_nextin = ri->ri_first;
|
||
}
|
||
}
|
||
}
|
||
|
||
static int
|
||
tulip_tx_intr(
|
||
tulip_softc_t *sc)
|
||
{
|
||
tulip_ringinfo_t *ri = &sc->tulip_txinfo;
|
||
struct mbuf *m;
|
||
int xmits = 0;
|
||
|
||
while (ri->ri_free < ri->ri_max) {
|
||
if (((volatile tulip_desc_t *) ri->ri_nextin)->d_status & TULIP_DSTS_OWNER)
|
||
break;
|
||
|
||
if (ri->ri_nextin->d_flag & TULIP_DFLAG_TxLASTSEG) {
|
||
if (ri->ri_nextin->d_flag & TULIP_DFLAG_TxSETUPPKT) {
|
||
/*
|
||
* We've just finished processing a setup packet.
|
||
* Mark that we can finished it. If there's not
|
||
* another pending, startup the TULIP receiver.
|
||
* Make sure we ack the RXSTOPPED so we won't get
|
||
* an abormal interrupt indication.
|
||
*/
|
||
sc->tulip_flags &= ~TULIP_DOINGSETUP;
|
||
if ((sc->tulip_flags & TULIP_WANTSETUP) == 0) {
|
||
sc->tulip_cmdmode |= TULIP_CMD_RXRUN;
|
||
sc->tulip_intrmask |= TULIP_STS_RXSTOPPED;
|
||
*sc->tulip_csrs.csr_status = TULIP_STS_RXSTOPPED;
|
||
*sc->tulip_csrs.csr_command = sc->tulip_cmdmode;
|
||
*sc->tulip_csrs.csr_intr = sc->tulip_intrmask;
|
||
}
|
||
} else {
|
||
IF_DEQUEUE(&sc->tulip_txq, m);
|
||
m_freem(m);
|
||
sc->tulip_if.if_collisions +=
|
||
(ri->ri_nextin->d_status & TULIP_DSTS_TxCOLLMASK)
|
||
>> TULIP_DSTS_V_TxCOLLCNT;
|
||
if (ri->ri_nextin->d_status & TULIP_DSTS_ERRSUM)
|
||
sc->tulip_if.if_oerrors++;
|
||
xmits++;
|
||
}
|
||
}
|
||
|
||
if (++ri->ri_nextin == ri->ri_last)
|
||
ri->ri_nextin = ri->ri_first;
|
||
ri->ri_free++;
|
||
sc->tulip_if.if_flags &= ~IFF_OACTIVE;
|
||
}
|
||
sc->tulip_if.if_opackets += xmits;
|
||
return xmits;
|
||
}
|
||
|
||
static int
|
||
tulip_txsegment(
|
||
tulip_softc_t *sc,
|
||
struct mbuf *m,
|
||
tulip_addrvec_t *avp,
|
||
size_t maxseg)
|
||
{
|
||
int segcnt;
|
||
|
||
for (segcnt = 0; m; m = m->m_next) {
|
||
int len = m->m_len;
|
||
caddr_t addr = mtod(m, caddr_t);
|
||
unsigned clsize = CLBYTES - (((u_long) addr) & (CLBYTES-1));
|
||
|
||
while (len > 0) {
|
||
unsigned slen = min(len, clsize);
|
||
if (segcnt < maxseg) {
|
||
avp->addr = vtophys(addr);
|
||
avp->length = slen;
|
||
}
|
||
len -= slen;
|
||
addr += slen;
|
||
clsize = CLBYTES;
|
||
avp++;
|
||
segcnt++;
|
||
}
|
||
}
|
||
if (segcnt >= maxseg) {
|
||
printf("%s%d: tulip_txsegment: extremely fragmented packet encountered (%d segments)\n",
|
||
sc->tulip_name, sc->tulip_unit, segcnt);
|
||
return -1;
|
||
}
|
||
avp->addr = 0;
|
||
avp->length = 0;
|
||
return segcnt;
|
||
}
|
||
|
||
static void
|
||
tulip_start(
|
||
struct ifnet *ifp)
|
||
{
|
||
tulip_softc_t *sc = (tulip_softc_t *) ifp;
|
||
struct ifqueue *ifq = &ifp->if_snd;
|
||
tulip_ringinfo_t *ri = &sc->tulip_txinfo;
|
||
tulip_desc_t *sop, *eop;
|
||
struct mbuf *m;
|
||
tulip_addrvec_t addrvec[TULIP_MAX_TXSEG+1], *avp;
|
||
int segcnt;
|
||
tulip_uint32_t d_status;
|
||
|
||
if ((ifp->if_flags & IFF_RUNNING) == 0)
|
||
return;
|
||
|
||
for (;;) {
|
||
if (sc->tulip_flags & TULIP_WANTSETUP) {
|
||
if ((sc->tulip_flags & TULIP_DOINGSETUP) || ri->ri_free == 1) {
|
||
ifp->if_flags |= IFF_OACTIVE;
|
||
return;
|
||
}
|
||
bcopy(sc->tulip_setupdata, sc->tulip_setupbuf,
|
||
sizeof(sc->tulip_setupbuf));
|
||
sc->tulip_flags &= ~TULIP_WANTSETUP;
|
||
sc->tulip_flags |= TULIP_DOINGSETUP;
|
||
ri->ri_free--;
|
||
ri->ri_nextout->d_flag &= TULIP_DFLAG_ENDRING|TULIP_DFLAG_CHAIN;
|
||
ri->ri_nextout->d_flag |= TULIP_DFLAG_TxFIRSTSEG|TULIP_DFLAG_TxLASTSEG
|
||
|TULIP_DFLAG_TxSETUPPKT|TULIP_DFLAG_TxWANTINTR;
|
||
if (sc->tulip_flags & TULIP_WANTHASH)
|
||
ri->ri_nextout->d_flag |= TULIP_DFLAG_TxHASHFILT;
|
||
ri->ri_nextout->d_length1 = sizeof(sc->tulip_setupbuf);
|
||
ri->ri_nextout->d_addr1 = vtophys(sc->tulip_setupbuf);
|
||
ri->ri_nextout->d_length2 = 0;
|
||
ri->ri_nextout->d_addr2 = 0;
|
||
ri->ri_nextout->d_status = TULIP_DSTS_OWNER;
|
||
*sc->tulip_csrs.csr_txpoll = 1;
|
||
/*
|
||
* Advance the ring for the next transmit packet.
|
||
*/
|
||
if (++ri->ri_nextout == ri->ri_last)
|
||
ri->ri_nextout = ri->ri_first;
|
||
}
|
||
|
||
IF_DEQUEUE(ifq, m);
|
||
if (m == NULL)
|
||
break;
|
||
|
||
/*
|
||
* First find out how many and which different pages
|
||
* the mbuf data occupies. Then check to see if we
|
||
* have enough descriptor space in our transmit ring
|
||
* to actually send it.
|
||
*/
|
||
segcnt = tulip_txsegment(sc, m, addrvec,
|
||
min(ri->ri_max - 1, TULIP_MAX_TXSEG));
|
||
if (segcnt < 0) {
|
||
struct mbuf *m0;
|
||
MGETHDR(m0, M_DONTWAIT, MT_DATA);
|
||
if (m0 != NULL) {
|
||
if (m->m_pkthdr.len > MHLEN) {
|
||
MCLGET(m0, M_DONTWAIT);
|
||
if ((m0->m_flags & M_EXT) == 0) {
|
||
m_freem(m);
|
||
continue;
|
||
}
|
||
}
|
||
m_copydata(m, 0, m0->m_pkthdr.len, mtod(m0, caddr_t));
|
||
m0->m_pkthdr.len = m0->m_len = m->m_pkthdr.len;
|
||
m_freem(m);
|
||
IF_PREPEND(ifq, m0);
|
||
continue;
|
||
} else {
|
||
m_freem(m);
|
||
continue;
|
||
}
|
||
}
|
||
if (ri->ri_free - 2 <= (segcnt + 1) >> 1)
|
||
break;
|
||
|
||
ri->ri_free -= (segcnt + 1) >> 1;
|
||
/*
|
||
* Now we fill in our transmit descriptors. This is
|
||
* a bit reminiscent of going on the Ark two by two
|
||
* since each descriptor for the TULIP can describe
|
||
* two buffers. So we advance through the address
|
||
* vector two entries at a time to to fill each
|
||
* descriptor. Clear the first and last segment bits
|
||
* in each descriptor (actually just clear everything
|
||
* but the end-of-ring or chain bits) to make sure
|
||
* we don't get messed up by previously sent packets.
|
||
*/
|
||
sop = ri->ri_nextout;
|
||
d_status = 0;
|
||
avp = addrvec;
|
||
do {
|
||
eop = ri->ri_nextout;
|
||
eop->d_flag &= TULIP_DFLAG_ENDRING|TULIP_DFLAG_CHAIN;
|
||
eop->d_status = d_status;
|
||
eop->d_addr1 = avp->addr; eop->d_length1 = avp->length; avp++;
|
||
eop->d_addr2 = avp->addr; eop->d_length2 = avp->length; avp++;
|
||
d_status = TULIP_DSTS_OWNER;
|
||
if (++ri->ri_nextout == ri->ri_last)
|
||
ri->ri_nextout = ri->ri_first;
|
||
} while ((segcnt -= 2) > 0);
|
||
#if NBPFILTER > 0
|
||
if (sc->tulip_bpf != NULL)
|
||
bpf_mtap(sc->tulip_bpf, m);
|
||
#endif
|
||
/*
|
||
* The descriptors have been filled in. Mark the first
|
||
* and last segments, indicate we want a transmit complete
|
||
* interrupt, give the descriptors to the TULIP, and tell
|
||
* it to transmit!
|
||
*/
|
||
|
||
IF_ENQUEUE(&sc->tulip_txq, m);
|
||
eop->d_flag |= TULIP_DFLAG_TxLASTSEG|TULIP_DFLAG_TxWANTINTR;
|
||
sop->d_flag |= TULIP_DFLAG_TxFIRSTSEG;
|
||
sop->d_status = TULIP_DSTS_OWNER;
|
||
|
||
*sc->tulip_csrs.csr_txpoll = 1;
|
||
}
|
||
if (m != NULL) {
|
||
ifp->if_flags |= IFF_OACTIVE;
|
||
IF_PREPEND(ifq, m);
|
||
}
|
||
}
|
||
|
||
static int
|
||
tulip_intr(
|
||
tulip_softc_t *sc)
|
||
{
|
||
tulip_uint32_t csr;
|
||
|
||
while ((csr = *sc->tulip_csrs.csr_status) & (TULIP_STS_NORMALINTR|TULIP_STS_ABNRMLINTR)) {
|
||
*sc->tulip_csrs.csr_status = csr & sc->tulip_intrmask;
|
||
|
||
if (csr & TULIP_STS_SYSERROR) {
|
||
if ((csr & TULIP_STS_ERRORMASK) == TULIP_STS_ERR_PARITY) {
|
||
TULIP_RESET(sc);
|
||
tulip_init(sc->tulip_unit);
|
||
return 1;
|
||
}
|
||
}
|
||
if (csr & TULIP_STS_ABNRMLINTR) {
|
||
printf("%s%d: abnormal interrupt: 0x%05x [0x%05x]\n",
|
||
sc->tulip_name, sc->tulip_unit, csr, csr & sc->tulip_intrmask);
|
||
*sc->tulip_csrs.csr_command = sc->tulip_cmdmode;
|
||
}
|
||
if (csr & TULIP_STS_RXINTR)
|
||
tulip_rx_intr(sc);
|
||
if (sc->tulip_txinfo.ri_free < sc->tulip_txinfo.ri_max) {
|
||
tulip_tx_intr(sc);
|
||
tulip_start(&sc->tulip_if);
|
||
}
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
/*
|
||
* This is the standard method of reading the DEC Address ROMS.
|
||
*/
|
||
static int
|
||
tulip_read_macaddr(
|
||
tulip_softc_t *sc)
|
||
{
|
||
int cksum, rom_cksum, idx;
|
||
tulip_sint32_t csr;
|
||
unsigned char tmpbuf[8];
|
||
static u_char testpat[] = { 0xFF, 0, 0x55, 0xAA, 0xFF, 0, 0x55, 0xAA };
|
||
|
||
*sc->tulip_csrs.csr_enetrom = 1;
|
||
for (idx = 0; idx < 32; idx++) {
|
||
int cnt = 0;
|
||
while ((csr = *sc->tulip_csrs.csr_enetrom) < 0 && cnt < 10000)
|
||
cnt++;
|
||
sc->tulip_rombuf[idx] = csr & 0xFF;
|
||
}
|
||
|
||
if (bcmp(&sc->tulip_rombuf[0], &sc->tulip_rombuf[16], 8) != 0) {
|
||
/*
|
||
* Some folks don't use the standard ethernet rom format
|
||
* but instead just put the address in the first 6 bytes
|
||
* of the rom and let the rest be all 0xffs. (Can we say
|
||
* ZNYX???)
|
||
*/
|
||
for (idx = 6; idx < 32; idx++) {
|
||
if (sc->tulip_rombuf[idx] != 0xFF)
|
||
return -4;
|
||
}
|
||
/*
|
||
* Make sure the address is not multicast or locally assigned
|
||
* that the OUI is not 00-00-00.
|
||
*/
|
||
if ((sc->tulip_rombuf[0] & 3) != 0)
|
||
return -4;
|
||
if (sc->tulip_rombuf[0] == 0 && sc->tulip_rombuf[1] == 0
|
||
&& sc->tulip_rombuf[2] == 0)
|
||
return -4;
|
||
bcopy(sc->tulip_rombuf, sc->tulip_hwaddr, 6);
|
||
return 0;
|
||
}
|
||
if (bcmp(&sc->tulip_rombuf[24], testpat, 8) != 0)
|
||
return -3;
|
||
|
||
tmpbuf[0] = sc->tulip_rombuf[15]; tmpbuf[1] = sc->tulip_rombuf[14];
|
||
tmpbuf[2] = sc->tulip_rombuf[13]; tmpbuf[3] = sc->tulip_rombuf[12];
|
||
tmpbuf[4] = sc->tulip_rombuf[11]; tmpbuf[5] = sc->tulip_rombuf[10];
|
||
tmpbuf[6] = sc->tulip_rombuf[9]; tmpbuf[7] = sc->tulip_rombuf[8];
|
||
if (bcmp(&sc->tulip_rombuf[0], tmpbuf, 8) != 0)
|
||
return -2;
|
||
|
||
bcopy(sc->tulip_rombuf, sc->tulip_hwaddr, 6);
|
||
|
||
cksum = *(u_short *) &sc->tulip_hwaddr[0];
|
||
cksum *= 2;
|
||
if (cksum > 65535) cksum -= 65535;
|
||
cksum += *(u_short *) &sc->tulip_hwaddr[2];
|
||
if (cksum > 65535) cksum -= 65535;
|
||
cksum *= 2;
|
||
if (cksum > 65535) cksum -= 65535;
|
||
cksum += *(u_short *) &sc->tulip_hwaddr[4];
|
||
if (cksum >= 65535) cksum -= 65535;
|
||
|
||
rom_cksum = *(u_short *) &sc->tulip_rombuf[6];
|
||
|
||
if (cksum != rom_cksum)
|
||
return -1;
|
||
return 0;
|
||
}
|
||
|
||
static unsigned
|
||
tulip_mchash(
|
||
unsigned char *mca)
|
||
{
|
||
u_int idx, bit, data, crc = 0xFFFFFFFFUL;
|
||
|
||
#ifdef __alpha
|
||
for (data = *(__unaligned u_long *) mca, bit = 0; bit < 48; bit++, data >>=
|
||
1)
|
||
crc = (crc >> 1) ^ (((crc ^ data) & 1) ? TULIP_CRC32_POLY : 0);
|
||
#else
|
||
for (idx = 0; idx < 6; idx++)
|
||
for (data = *mca++, bit = 0; bit < 8; bit++, data >>= 1)
|
||
crc = (crc >> 1) ^ (((crc ^ data) & 1) ? TULIP_CRC32_POLY : 0);
|
||
#endif
|
||
return crc & 0x1FF;
|
||
}
|
||
|
||
static void
|
||
tulip_addr_filter(
|
||
tulip_softc_t *sc)
|
||
{
|
||
tulip_uint32_t *sp = sc->tulip_setupdata;
|
||
struct ether_multistep step;
|
||
struct ether_multi *enm;
|
||
int i;
|
||
|
||
sc->tulip_flags &= ~TULIP_WANTHASH;
|
||
sc->tulip_flags |= TULIP_WANTSETUP;
|
||
sc->tulip_cmdmode &= ~TULIP_CMD_RXRUN;
|
||
sc->tulip_intrmask &= ~TULIP_STS_RXSTOPPED;
|
||
if (sc->tulip_ac.ac_multicnt > 14) {
|
||
unsigned hash;
|
||
/*
|
||
* If we have more than 14 multicasts, we have
|
||
* go into hash perfect mode (512 bit multicast
|
||
* hash and one perfect hardware).
|
||
*/
|
||
|
||
bzero(sc->tulip_setupdata, sizeof(sc->tulip_setupdata));
|
||
hash = tulip_mchash(etherbroadcastaddr);
|
||
sp[hash >> 4] |= 1 << (hash & 0xF);
|
||
ETHER_FIRST_MULTI(step, &sc->tulip_ac, enm);
|
||
while (enm != NULL) {
|
||
hash = tulip_mchash(enm->enm_addrlo);
|
||
sp[hash >> 4] |= 1 << (hash & 0xF);
|
||
ETHER_NEXT_MULTI(step, enm);
|
||
}
|
||
sc->tulip_cmdmode |= TULIP_WANTHASH;
|
||
sp[40] = ((u_short *) sc->tulip_ac.ac_enaddr)[0];
|
||
sp[41] = ((u_short *) sc->tulip_ac.ac_enaddr)[1];
|
||
sp[42] = ((u_short *) sc->tulip_ac.ac_enaddr)[2];
|
||
} else {
|
||
/*
|
||
* Else can get perfect filtering for 16 addresses.
|
||
*/
|
||
i = 0;
|
||
ETHER_FIRST_MULTI(step, &sc->tulip_ac, enm);
|
||
for (; enm != NULL; i++) {
|
||
*sp++ = ((u_short *) enm->enm_addrlo)[0];
|
||
*sp++ = ((u_short *) enm->enm_addrlo)[1];
|
||
*sp++ = ((u_short *) enm->enm_addrlo)[2];
|
||
ETHER_NEXT_MULTI(step, enm);
|
||
}
|
||
/*
|
||
* If an IP address is enabled, turn on broadcast
|
||
*/
|
||
if (sc->tulip_ac.ac_ipaddr.s_addr != 0) {
|
||
i++;
|
||
*sp++ = 0xFFFF;
|
||
*sp++ = 0xFFFF;
|
||
*sp++ = 0xFFFF;
|
||
}
|
||
/*
|
||
* Pad the rest with our hardware address
|
||
*/
|
||
for (; i < 16; i++) {
|
||
*sp++ = ((u_short *) sc->tulip_ac.ac_enaddr)[0];
|
||
*sp++ = ((u_short *) sc->tulip_ac.ac_enaddr)[1];
|
||
*sp++ = ((u_short *) sc->tulip_ac.ac_enaddr)[2];
|
||
}
|
||
}
|
||
}
|
||
|
||
/*extern void arp_ifinit(struct arpcom *, struct ifaddr*);*/
|
||
|
||
static int
|
||
tulip_ioctl(
|
||
struct ifnet *ifp,
|
||
int cmd,
|
||
caddr_t data)
|
||
{
|
||
tulip_softc_t *sc = tulips[ifp->if_unit];
|
||
struct ifaddr *ifa = (struct ifaddr *)data;
|
||
struct ifreq *ifr = (struct ifreq *) data;
|
||
int s, error = 0;
|
||
|
||
s = splimp();
|
||
|
||
switch (cmd) {
|
||
case SIOCSIFADDR: {
|
||
|
||
ifp->if_flags |= IFF_UP;
|
||
switch(ifa->ifa_addr->sa_family) {
|
||
#ifdef INET
|
||
case AF_INET: {
|
||
((struct arpcom *)ifp)->ac_ipaddr = IA_SIN(ifa)->sin_addr;
|
||
tulip_addr_filter(sc); /* reset multicast filtering */
|
||
(*ifp->if_init)(ifp->if_unit);
|
||
arp_ifinit((struct arpcom *)ifp, ifa);
|
||
break;
|
||
}
|
||
#endif /* INET */
|
||
|
||
#ifdef NS
|
||
/* This magic copied from if_is.c; I don't use XNS,
|
||
* so I have no way of telling if this actually
|
||
* works or not.
|
||
*/
|
||
case AF_NS: {
|
||
struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
|
||
if (ns_nullhost(*ina)) {
|
||
ina->x_host = *(union ns_host *)(sc->tulip_ac.ac_enaddr);
|
||
} else {
|
||
ifp->if_flags &= ~IFF_RUNNING;
|
||
bcopy((caddr_t)ina->x_host.c_host,
|
||
(caddr_t)sc->tulip_ac.ac_enaddr,
|
||
sizeof sc->tulip_ac.ac_enaddr);
|
||
}
|
||
|
||
(*ifp->if_init)(ifp->if_unit);
|
||
break;
|
||
}
|
||
#endif /* NS */
|
||
|
||
default: {
|
||
(*ifp->if_init)(ifp->if_unit);
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
|
||
case SIOCSIFFLAGS: {
|
||
/*
|
||
* Changing the connection forces a reset.
|
||
*/
|
||
if (sc->tulip_flags & TULIP_ALTPHYS) {
|
||
if ((ifp->if_flags & IFF_ALTPHYS) == 0)
|
||
TULIP_RESET(sc);
|
||
} else {
|
||
if (ifp->if_flags & IFF_ALTPHYS)
|
||
TULIP_RESET(sc);
|
||
}
|
||
(*ifp->if_init)(ifp->if_unit);
|
||
break;
|
||
}
|
||
|
||
case SIOCADDMULTI:
|
||
case SIOCDELMULTI: {
|
||
/*
|
||
* Update multicast listeners
|
||
*/
|
||
if (cmd == SIOCADDMULTI)
|
||
error = ether_addmulti(ifr, &sc->tulip_ac);
|
||
else
|
||
error = ether_delmulti(ifr, &sc->tulip_ac);
|
||
|
||
if (error == ENETRESET) {
|
||
tulip_addr_filter(sc); /* reset multicast filtering */
|
||
(*ifp->if_init)(ifp->if_unit);
|
||
error = 0;
|
||
}
|
||
break;
|
||
}
|
||
case SIOCSIFMTU:
|
||
/*
|
||
* Set the interface MTU.
|
||
*/
|
||
if (ifr->ifr_mtu > ETHERMTU) {
|
||
error = EINVAL;
|
||
} else {
|
||
ifp->if_mtu = ifr->ifr_mtu;
|
||
}
|
||
break;
|
||
|
||
default: {
|
||
error = EINVAL;
|
||
break;
|
||
}
|
||
}
|
||
|
||
splx(s);
|
||
return error;
|
||
}
|
||
|
||
static void
|
||
tulip_attach(
|
||
tulip_softc_t *sc)
|
||
{
|
||
struct ifnet *ifp = &sc->tulip_if;
|
||
int cnt;
|
||
|
||
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
|
||
|
||
*sc->tulip_csrs.csr_sia_connectivity = 0;
|
||
*sc->tulip_csrs.csr_sia_connectivity = TULIP_SIACONN_10BASET;
|
||
for (cnt = 0; cnt < 240000; cnt++) {
|
||
if ((*sc->tulip_csrs.csr_sia_status & TULIP_SIASTS_LINKFAIL) == 0)
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
if (*sc->tulip_csrs.csr_sia_status & TULIP_SIASTS_LINKFAIL) {
|
||
ifp->if_flags |= IFF_ALTPHYS;
|
||
} else {
|
||
sc->tulip_flags |= TULIP_ALTPHYS;
|
||
}
|
||
TULIP_RESET(sc);
|
||
|
||
ifp->if_init = tulip_init;
|
||
ifp->if_ioctl = tulip_ioctl;
|
||
ifp->if_output = ether_output;
|
||
ifp->if_reset = tulip_reset;
|
||
ifp->if_start = tulip_start;
|
||
|
||
printf("%s%d: %s pass %d.%d ethernet address %s\n",
|
||
sc->tulip_name, sc->tulip_unit,
|
||
tulip_chipdescs[tulip_chipids[sc->tulip_unit]],
|
||
(sc->tulip_revinfo & 0xF0) >> 4,
|
||
sc->tulip_revinfo & 0x0F,
|
||
ether_sprintf(sc->tulip_hwaddr));
|
||
|
||
if_attach(ifp);
|
||
|
||
#if NBPFILTER > 0
|
||
bpfattach(&sc->tulip_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
tulip_initcsrs(
|
||
tulip_softc_t *sc,
|
||
volatile tulip_uint32_t *va_csrs,
|
||
size_t csr_size)
|
||
{
|
||
sc->tulip_csrs.csr_busmode = va_csrs + 0 * csr_size;
|
||
sc->tulip_csrs.csr_txpoll = va_csrs + 1 * csr_size;
|
||
sc->tulip_csrs.csr_rxpoll = va_csrs + 2 * csr_size;
|
||
sc->tulip_csrs.csr_rxlist = va_csrs + 3 * csr_size;
|
||
sc->tulip_csrs.csr_txlist = va_csrs + 4 * csr_size;
|
||
sc->tulip_csrs.csr_status = va_csrs + 5 * csr_size;
|
||
sc->tulip_csrs.csr_command = va_csrs + 6 * csr_size;
|
||
sc->tulip_csrs.csr_intr = va_csrs + 7 * csr_size;
|
||
sc->tulip_csrs.csr_missed_frame = va_csrs + 8 * csr_size;
|
||
sc->tulip_csrs.csr_enetrom = va_csrs + 9 * csr_size;
|
||
sc->tulip_csrs.csr_reserved = va_csrs + 10 * csr_size;
|
||
sc->tulip_csrs.csr_full_duplex = va_csrs + 11 * csr_size;
|
||
sc->tulip_csrs.csr_sia_status = va_csrs + 12 * csr_size;
|
||
sc->tulip_csrs.csr_sia_connectivity = va_csrs + 13 * csr_size;
|
||
sc->tulip_csrs.csr_sia_tx_rx = va_csrs + 14 * csr_size;
|
||
sc->tulip_csrs.csr_sia_general = va_csrs + 15 * csr_size;
|
||
}
|
||
|
||
static void
|
||
tulip_initring(
|
||
tulip_softc_t *sc,
|
||
tulip_ringinfo_t *ri,
|
||
tulip_desc_t *descs,
|
||
int ndescs)
|
||
{
|
||
ri->ri_max = ndescs;
|
||
ri->ri_first = descs;
|
||
ri->ri_last = ri->ri_first + ri->ri_max;
|
||
bzero((caddr_t) ri->ri_first, sizeof(ri->ri_first[0]) * ri->ri_max);
|
||
ri->ri_last[-1].d_flag = TULIP_DFLAG_ENDRING;
|
||
}
|
||
|
||
#if NPCI > 0
|
||
/*
|
||
* This is the PCI configuration support. Since the DC21040 is available
|
||
* on both EISA and PCI boards, one must be careful in how defines the
|
||
* DC21040 in the config file.
|
||
*/
|
||
static char* tulip_pci_probe (pcici_t config_id, pcidi_t device_id);
|
||
static void tulip_pci_attach(pcici_t config_id, int unit);
|
||
static u_long tulip_count;
|
||
|
||
struct pci_device dedevice = {
|
||
"de",
|
||
tulip_pci_probe,
|
||
tulip_pci_attach,
|
||
&tulip_count,
|
||
};
|
||
|
||
DATA_SET (pcidevice_set, dedevice);
|
||
|
||
#define PCI_CFID 0x00 /* Configuration ID */
|
||
#define PCI_CFCS 0x04 /* Configurtion Command/Status */
|
||
#define PCI_CFRV 0x08 /* Configuration Revision */
|
||
#define PCI_CFLT 0x0c /* Configuration Latency Timer */
|
||
#define PCI_CBIO 0x10 /* Configuration Base IO Address */
|
||
#define PCI_CBMA 0x14 /* Configuration Base Memory Address */
|
||
#define PCI_CFIT 0x3c /* Configuration Interrupt */
|
||
#define PCI_CFDA 0x40 /* Configuration Driver Area */
|
||
|
||
#define TULIP_PCI_CSRSIZE (8 / sizeof(tulip_uint32_t))
|
||
static char*
|
||
tulip_pci_probe(
|
||
pcici_t config_id,
|
||
pcidi_t device_id)
|
||
{
|
||
int idx;
|
||
for (idx = 0; idx < NDE; idx++) {
|
||
if (tulips[idx] == NULL) {
|
||
if (device_id == 0x00021011ul) {
|
||
tulip_chipids[idx] = TULIP_DC21040;
|
||
return "Digital DC21040 Ethernet";
|
||
}
|
||
if (device_id == 0x00091011ul) {
|
||
tulip_chipids[idx] = TULIP_DC21140;
|
||
return "Digital DC21140 Fast Ethernet";
|
||
}
|
||
return NULL;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
tulip_pci_attach(
|
||
pcici_t config_id,
|
||
int unit)
|
||
{
|
||
tulip_softc_t *sc;
|
||
int retval, idx;
|
||
vm_offset_t va_csrs, pa_csrs;
|
||
tulip_desc_t *rxdescs, *txdescs;
|
||
|
||
sc = (tulip_softc_t *) malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT);
|
||
if (sc == NULL)
|
||
return;
|
||
|
||
rxdescs = (tulip_desc_t *)
|
||
malloc(sizeof(tulip_desc_t) * TULIP_RXDESCS, M_DEVBUF, M_NOWAIT);
|
||
if (rxdescs == NULL) {
|
||
free((caddr_t) sc, M_DEVBUF);
|
||
return;
|
||
}
|
||
|
||
txdescs = (tulip_desc_t *)
|
||
malloc(sizeof(tulip_desc_t) * TULIP_TXDESCS, M_DEVBUF, M_NOWAIT);
|
||
if (txdescs == NULL) {
|
||
free((caddr_t) rxdescs, M_DEVBUF);
|
||
free((caddr_t) sc, M_DEVBUF);
|
||
return;
|
||
}
|
||
|
||
bzero(sc, sizeof(*sc)); /* Zero out the softc*/
|
||
sc->tulip_rxspace = vm_page_alloc_contig(TULIP_RXSPACE + NBPG, 0, 0xffffffff, PAGE_SIZE);
|
||
/*
|
||
* We've allocated an extra page of receive space so we can double map
|
||
* the first page of the receive space into the page after the last page
|
||
* of the receive space. This means that even if a receive wraps around
|
||
* the end of the receive space, it will still virtually contiguous and
|
||
* that greatly simplifies the recevie logic.
|
||
*/
|
||
pmap_enter(pmap_kernel(), sc->tulip_rxspace + TULIP_RXSPACE,
|
||
vtophys(sc->tulip_rxspace), VM_PROT_READ|VM_PROT_WRITE, TRUE);
|
||
|
||
sc->tulip_unit = unit;
|
||
sc->tulip_name = "de";
|
||
retval = pci_map_mem(config_id, PCI_CBMA, &va_csrs, &pa_csrs);
|
||
if (!retval) {
|
||
kmem_free(kernel_map, sc->tulip_rxspace, TULIP_RXSPACE + NBPG);
|
||
free((caddr_t) txdescs, M_DEVBUF);
|
||
free((caddr_t) rxdescs, M_DEVBUF);
|
||
free((caddr_t) sc, M_DEVBUF);
|
||
return;
|
||
}
|
||
tulips[unit] = sc;
|
||
tulip_initcsrs(sc, (volatile tulip_uint32_t *) va_csrs, TULIP_PCI_CSRSIZE);
|
||
tulip_initring(sc, &sc->tulip_rxinfo, rxdescs, TULIP_RXDESCS);
|
||
tulip_initring(sc, &sc->tulip_txinfo, txdescs, TULIP_TXDESCS);
|
||
sc->tulip_revinfo = pci_conf_read(config_id, PCI_CFRV);
|
||
if ((retval = tulip_read_macaddr(sc)) < 0) {
|
||
printf("de%d: can't read ENET ROM (why=%d) (", sc->tulip_unit, retval);
|
||
for (idx = 0; idx < 32; idx++)
|
||
printf("%02x", sc->tulip_rombuf[idx]);
|
||
printf("\n");
|
||
printf("%s%d: %s pass %d.%d ethernet address %s\n",
|
||
sc->tulip_name, sc->tulip_unit,
|
||
tulip_chipdescs[tulip_chipids[sc->tulip_unit]],
|
||
(sc->tulip_revinfo & 0xF0) >> 4, sc->tulip_revinfo & 0x0F,
|
||
"unknown");
|
||
} else {
|
||
TULIP_RESET(sc);
|
||
tulip_attach(sc);
|
||
pci_map_int (config_id, tulip_intr, (void*) sc, &net_imask);
|
||
}
|
||
}
|
||
#endif /* NPCI > 0 */
|
||
#endif /* NDE > 0 */
|