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4a5f1499b0
freebsd/sys/i386/isa/if_le.c
David Greenman 4a5f1499b0 all: 
Removed ifnet.if_init and ifnet.if_reset as they are generally unused.
Change the parameter passed to if_watchdog to be a ifnet * rather than
a unit number. All of this is an attempt to move toward not needing an
array of softc pointers (which is usually static in size) to point to
the driver softc.

if_ed.c:
Changed some of the argument passing to some functions to make a little
more sense.

if_ep.c, if_vx.c:
Killed completely bogus use of if_timer. It was being set in such a way
that the interface was being reset once per second (blech!).
1995-12-05 02:01:59 +00:00

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/*-
* 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_le.c,v 1.23 1995/11/04 17:07:33 bde Exp $
*/
/*
* DEC EtherWORKS 2 Ethernet Controllers
* DEC EtherWORKS 3 Ethernet Controllers
*
* Written by Matt Thomas
* BPF support code stolen directly from if_ec.c
*
* This driver supports the DEPCA, DE100, DE101, DE200, DE201,
* DE2002, DE203, DE204, DE205, and DE422 cards.
*/
#include "le.h"
#if NLE > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/ioccom.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/syslog.h>
#include <sys/devconf.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/route.h>
#include "bpfilter.h"
#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 IPX
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#include <machine/clock.h>
#include <i386/isa/isa.h>
#include <i386/isa/isa_device.h>
#include <i386/isa/icu.h>
#include <vm/vm.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
/* Forward declarations */
typedef struct le_softc le_softc_t;
typedef struct le_board le_board_t;
typedef u_short le_mcbits_t;
#define LE_MC_NBPW_LOG2 4
#define LE_MC_NBPW (1 << LE_MC_NBPW_LOG2)
#if __FreeBSD__ > 1
#define IF_RESET_ARGS int unit
#define LE_RESET(ifp) (((sc)->if_reset)((sc)->le_if.if_unit))
#else
#define IF_RESET_ARGS int unit, int dummy
#define LE_RESET(ifp) (((sc)->if_reset)((sc)->le_if.if_unit, 0))
#endif
#if !defined(LE_NOLEMAC)
/*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*
* Start of DEC EtherWORKS III (LEMAC) dependent structures
*
*/
#include "i386/isa/ic/lemac.h" /* Include LEMAC definitions */
static int lemac_probe(le_softc_t *sc, const le_board_t *bd, int *msize);
struct le_lemac_info {
u_int lemac__lastpage; /* last 2K page */
u_int lemac__memmode; /* Are we in 2K, 32K, or 64K mode */
u_int lemac__membase; /* Physical address of start of RAM */
u_int lemac__txctl; /* Transmit Control Byte */
u_int lemac__txmax; /* Maximum # of outstanding transmits */
le_mcbits_t lemac__mctbl[LEMAC_MCTBL_SIZE/sizeof(le_mcbits_t)];
/* local copy of multicast table */
u_char lemac__eeprom[LEMAC_EEP_SIZE]; /* local copy eeprom */
char lemac__prodname[LEMAC_EEP_PRDNMSZ+1]; /* prodname name */
#define lemac_lastpage le_un.un_lemac.lemac__lastpage
#define lemac_memmode le_un.un_lemac.lemac__memmode
#define lemac_membase le_un.un_lemac.lemac__membase
#define lemac_txctl le_un.un_lemac.lemac__txctl
#define lemac_txmax le_un.un_lemac.lemac__txmax
#define lemac_mctbl le_un.un_lemac.lemac__mctbl
#define lemac_eeprom le_un.un_lemac.lemac__eeprom
#define lemac_prodname le_un.un_lemac.lemac__prodname
};
#endif /* !defined(LE_NOLEMAC) */
#if !defined(LE_NOLANCE)
/*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*
* Start of DEC EtherWORKS II (LANCE) dependent structures
*
*/
#include "i386/isa/ic/am7990.h"
#ifndef LN_DOSTATS
#define LN_DOSTATS 1
#endif
static int depca_probe(le_softc_t *sc, const le_board_t *bd, int *msize);
typedef struct lance_descinfo lance_descinfo_t;
typedef struct lance_ring lance_ring_t;
typedef unsigned lance_addr_t;
struct lance_descinfo {
caddr_t di_addr; /* address of descriptor */
lance_addr_t di_bufaddr; /* LANCE address of buffer owned by descriptor */
unsigned di_buflen; /* size of buffer owned by descriptor */
struct mbuf *di_mbuf; /* mbuf being transmitted/received */
};
struct lance_ring {
lance_descinfo_t *ri_first; /* Pointer to first descriptor in ring */
lance_descinfo_t *ri_last; /* Pointer to last + 1 descriptor in ring */
lance_descinfo_t *ri_nextin; /* Pointer to next one to be given to HOST */
lance_descinfo_t *ri_nextout; /* Pointer to next one to be given to LANCE */
unsigned ri_max; /* Size of Ring - 1 */
unsigned ri_free; /* Number of free rings entires (owned by HOST) */
lance_addr_t ri_heap; /* Start of RAM for this ring */
lance_addr_t ri_heapend; /* End + 1 of RAM for this ring */
lance_addr_t ri_outptr; /* Pointer to first output byte */
unsigned ri_outsize; /* Space remaining for output */
};
struct le_lance_info {
unsigned lance__csr1; /* LANCE Address of init block (low 16) */
unsigned lance__csr2; /* LANCE Address of init block (high 8) */
unsigned lance__csr3; /* Copy of CSR3 */
unsigned lance__rap; /* IO Port Offset of RAP */
unsigned lance__rdp; /* IO Port Offset of RDP */
unsigned lance__ramoffset; /* Offset to valid LANCE RAM */
unsigned lance__ramsize; /* Amount of RAM shared by LANCE */
unsigned lance__rxbufsize; /* Size of a receive buffer */
ln_initb_t lance__initb; /* local copy of LANCE initblock */
ln_initb_t *lance__raminitb; /* copy to board's LANCE initblock (debugging) */
ln_desc_t *lance__ramdesc; /* copy to board's LANCE descriptors (debugging) */
lance_ring_t lance__rxinfo; /* Receive ring information */
lance_ring_t lance__txinfo; /* Transmit ring information */
#define lance_csr1 le_un.un_lance.lance__csr1
#define lance_csr2 le_un.un_lance.lance__csr2
#define lance_csr3 le_un.un_lance.lance__csr3
#define lance_rap le_un.un_lance.lance__rap
#define lance_rdp le_un.un_lance.lance__rdp
#define lance_ramoffset le_un.un_lance.lance__ramoffset
#define lance_ramsize le_un.un_lance.lance__ramsize
#define lance_rxbufsize le_un.un_lance.lance__rxbufsize
#define lance_initb le_un.un_lance.lance__initb
#define lance_raminitb le_un.un_lance.lance__raminitb
#define lance_ramdesc le_un.un_lance.lance__ramdesc
#define lance_rxinfo le_un.un_lance.lance__rxinfo
#define lance_txinfo le_un.un_lance.lance__txinfo
};
#endif /* !defined(LE_NOLANCE) */
/*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*
* Start of Common Code
*
*/
static void (*le_intrvec[NLE])(le_softc_t *sc);
/*
* Ethernet status, per interface.
*/
struct le_softc {
struct arpcom le_ac; /* Common Ethernet/ARP Structure */
void (*if_init) __P((int)); /* Interface init routine */
void (*if_reset) __P((int)); /* Interface reset routine */
caddr_t le_membase; /* Starting memory address (virtual) */
unsigned le_iobase; /* Starting I/O base address */
unsigned le_irq; /* Interrupt Request Value */
unsigned le_flags; /* local copy of if_flags */
#define LE_BRDCSTONLY 0x01000000 /* If only broadcast is enabled */
u_int le_mcmask; /* bit mask for CRC-32 for multicast hash */
le_mcbits_t *le_mctbl; /* pointer to multicast table */
const char *le_prodname; /* product name DE20x-xx */
#if NBPFILTER > 0
caddr_t le_bpf; /* BPF context */
#endif
u_char le_hwaddr[6]; /* local copy of hwaddr */
unsigned le_scast_drops; /* singlecast drops */
unsigned le_mcast_drops; /* multicast drops */
unsigned le_bcast_drops; /* broadcast drops */
union {
#if !defined(LE_NOLEMAC)
struct le_lemac_info un_lemac; /* LEMAC specific information */
#endif
#if !defined(LE_NOLANCE)
struct le_lance_info un_lance; /* Am7990 specific information */
#endif
} le_un;
};
#define le_if le_ac.ac_if
static int le_probe(struct isa_device *dvp);
static int le_attach(struct isa_device *dvp);
static int le_ioctl(struct ifnet *ifp, int command, caddr_t data);
static void le_input(le_softc_t *sc, caddr_t seg1, size_t total_len,
size_t len2, caddr_t seg2);
static void le_multi_filter(le_softc_t *sc);
static void le_multi_op(le_softc_t *sc, const u_char *mca, int oper_flg);
static int le_read_macaddr(le_softc_t *sc, int ioreg, int skippat);
#define LE_CRC32_POLY 0xEDB88320UL /* CRC-32 Poly -- Little Endian */
struct le_board {
int (*bd_probe)(le_softc_t *sc, const le_board_t *bd, int *msize);
};
le_softc_t le_softc[NLE];
const le_board_t le_boards[] = {
#if !defined(LE_NOLEMAC)
{ lemac_probe }, /* DE20[345] */
#endif
#if !defined(LE_NOLANCE)
{ depca_probe }, /* DE{20[012],422} */
#endif
{ NULL } /* Must Be Last! */
};
/*
* This tells the autoconf code how to set us up.
*/
struct isa_driver ledriver = {
le_probe, le_attach, "le",
};
unsigned le_intrs[NLE];
#define LE_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 LE_ADDRBRDCST(a1) \
(((u_short *)a1)[0] == 0xFFFFU \
|| ((u_short *)a1)[1] == 0xFFFFU \
|| ((u_short *)a1)[2] == 0xFFFFU)
#define LE_INL(sc, reg) \
({ u_long data; \
__asm __volatile("inl %1, %0": "=a" (data): "d" ((u_short)((sc)->le_iobase + (reg)))); \
data; })
#define LE_OUTL(sc, reg, data) \
({__asm __volatile("outl %0, %1"::"a" ((u_long)(data)), "d" ((u_short)((sc)->le_iobase + (reg))));})
#define LE_INW(sc, reg) \
({ u_short data; \
__asm __volatile("inw %1, %0": "=a" (data): "d" ((u_short)((sc)->le_iobase + (reg)))); \
data; })
#define LE_OUTW(sc, reg, data) \
({__asm __volatile("outw %0, %1"::"a" ((u_short)(data)), "d" ((u_short)((sc)->le_iobase + (reg))));})
#define LE_INB(sc, reg) \
({ u_char data; \
__asm __volatile("inb %1, %0": "=a" (data): "d" ((u_short)((sc)->le_iobase + (reg)))); \
data; })
#define LE_OUTB(sc, reg, data) \
({__asm __volatile("outb %0, %1"::"a" ((u_char)(data)), "d" ((u_short)((sc)->le_iobase + (reg))));})
#define MEMCPY(to, from, len) bcopy(from, to, len)
#define MEMSET(where, what, howmuch) bzero(where, howmuch)
#define MEMCMP(l, r, len) bcmp(l, r, len)
static struct kern_devconf kdc_le[NLE] = { {
0, 0, 0, /* filled in by dev_attach */
"le", 0, { MDDT_ISA, 0, "net" },
isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
&kdc_isa0, /* parent */
0, /* parentdata */
DC_UNCONFIGURED, /* state */
"Ethernet adapter: DEC EtherWorks II or EtherWorks III",
DC_CLS_NETIF /* class */
} };
static inline void
le_registerdev(struct isa_device *id)
{
if(id->id_unit)
kdc_le[id->id_unit] = kdc_le[0];
kdc_le[id->id_unit].kdc_unit = id->id_unit;
kdc_le[id->id_unit].kdc_isa = id;
dev_attach(&kdc_le[id->id_unit]);
}
static int
le_probe(
struct isa_device *dvp)
{
le_softc_t *sc = &le_softc[dvp->id_unit];
const le_board_t *bd;
int iospace;
if (dvp->id_unit >= NLE) {
printf("%s%d not configured -- too many devices\n",
ledriver.name, dvp->id_unit);
return 0;
}
le_registerdev(dvp);
sc->le_iobase = dvp->id_iobase;
sc->le_membase = (u_char *) dvp->id_maddr;
sc->le_irq = dvp->id_irq;
sc->le_if.if_name = ledriver.name;
sc->le_if.if_unit = dvp->id_unit;
/*
* Find and Initialize board..
*/
sc->le_flags &= ~(IFF_UP|IFF_ALLMULTI);
for (bd = le_boards; bd->bd_probe != NULL; bd++) {
if ((iospace = (*bd->bd_probe)(sc, bd, &dvp->id_msize)) != 0) {
return iospace;
}
}
printf("%s%d: no board found at 0x%x\n",
sc->le_if.if_name, sc->le_if.if_unit, dvp->id_iobase);
return 0;
}
static int
le_attach(
struct isa_device *dvp)
{
le_softc_t *sc = &le_softc[dvp->id_unit];
struct ifnet *ifp = &sc->le_if;
struct ifaddr *ifa = ifp->if_addrlist;
ifp->if_mtu = ETHERMTU;
printf("%s%d: %s ethernet address %s\n",
ifp->if_name, ifp->if_unit,
sc->le_prodname,
ether_sprintf(sc->le_ac.ac_enaddr));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_output = ether_output;
ifp->if_ioctl = le_ioctl;
ifp->if_type = IFT_ETHER;
ifp->if_addrlen = 6;
ifp->if_hdrlen = 14;
#if NBPFILTER > 0
bpfattach(&sc->le_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
if_attach(ifp);
kdc_le[dvp->id_unit].kdc_state = DC_IDLE;
while (ifa && ifa->ifa_addr && ifa->ifa_addr->sa_family != AF_LINK)
ifa = ifa->ifa_next;
if (ifa != NULL && ifa->ifa_addr != NULL) {
struct sockaddr_dl *sdl;
/*
* Provide our ether address to the higher layers
*/
sdl = (struct sockaddr_dl *) ifa->ifa_addr;
sdl->sdl_type = IFT_ETHER;
sdl->sdl_alen = 6;
sdl->sdl_slen = 0;
MEMCPY(LLADDR(sdl), sc->le_ac.ac_enaddr, 6);
}
return 1;
}
void
le_intr(
int unit)
{
int s = splimp();
le_intrs[unit]++;
(*le_intrvec[unit])(&le_softc[unit]);
splx(s);
}
#define LE_XTRA 0
static void
le_input(
le_softc_t *sc,
caddr_t seg1,
size_t total_len,
size_t len1,
caddr_t seg2)
{
struct ether_header eh;
struct mbuf *m;
if (total_len - sizeof(eh) > ETHERMTU
|| total_len - sizeof(eh) < ETHERMIN) {
sc->le_if.if_ierrors++;
return;
}
MEMCPY(&eh, seg1, sizeof(eh));
#if NBPFILTER > 0
if (sc->le_bpf != NULL && seg2 == NULL) {
bpf_tap(sc->le_bpf, seg1, total_len);
/*
* If this is single cast but not to us
* drop it!
*/
if ((eh.ether_dhost[0] & 1) == 0) {
if (!LE_ADDREQUAL(eh.ether_dhost, sc->le_ac.ac_enaddr)) {
sc->le_scast_drops++;
return;
}
} else if ((sc->le_flags & IFF_MULTICAST) == 0) {
sc->le_mcast_drops++;
return;
} else if (sc->le_flags & LE_BRDCSTONLY) {
if (!LE_ADDRBRDCST(eh.ether_dhost)) {
sc->le_bcast_drops++;
return;
}
}
}
#endif
seg1 += sizeof(eh); total_len -= sizeof(eh); len1 -= sizeof(eh);
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
sc->le_if.if_ierrors++;
return;
}
m->m_pkthdr.len = total_len;
m->m_pkthdr.rcvif = &sc->le_if;
if (total_len + LE_XTRA > MHLEN /* >= MINCLSIZE */) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_free(m);
sc->le_if.if_ierrors++;
return;
}
} else if (total_len + LE_XTRA > MHLEN && MINCLSIZE == (MHLEN+MLEN)) {
MGET(m->m_next, M_DONTWAIT, MT_DATA);
if (m->m_next == NULL) {
m_free(m);
sc->le_if.if_ierrors++;
return;
}
m->m_next->m_len = total_len - MHLEN - LE_XTRA;
len1 = total_len = MHLEN - LE_XTRA;
MEMCPY(mtod(m->m_next, caddr_t), &seg1[MHLEN-LE_XTRA], m->m_next->m_len);
} else if (total_len + LE_XTRA > MHLEN) {
panic("le_input: pkt of unknown length");
}
m->m_data += LE_XTRA;
m->m_len = total_len;
MEMCPY(mtod(m, caddr_t), seg1, len1);
if (seg2 != NULL)
MEMCPY(mtod(m, caddr_t) + len1, seg2, total_len - len1);
#if NBPFILTER > 0
if (sc->le_bpf != NULL && seg2 != NULL) {
bpf_mtap(sc->le_bpf, m);
/*
* If this is single cast but not to us
* drop it!
*/
if ((eh.ether_dhost[0] & 1) == 0) {
if (!LE_ADDREQUAL(eh.ether_dhost, sc->le_ac.ac_enaddr)) {
sc->le_scast_drops++;
m_freem(m);
return;
}
} else if ((sc->le_flags & IFF_MULTICAST) == 0) {
sc->le_mcast_drops++;
m_freem(m);
return;
} else if (sc->le_flags & LE_BRDCSTONLY) {
if (!LE_ADDRBRDCST(eh.ether_dhost)) {
sc->le_bcast_drops++;
m_freem(m);
return;
}
}
}
#endif
ether_input(&sc->le_if, &eh, m);
}
static int
le_ioctl(
struct ifnet *ifp,
int cmd,
caddr_t data)
{
le_softc_t *sc = &le_softc[ifp->if_unit];
int s, error = 0;
if ((sc->le_flags & IFF_UP) == 0)
return EIO;
s = splimp();
switch (cmd) {
case SIOCSIFADDR: {
struct ifaddr *ifa = (struct ifaddr *)data;
ifp->if_flags |= IFF_UP;
switch(ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET: {
(*sc->if_init)(ifp->if_unit);
arp_ifinit((struct arpcom *)ifp, ifa);
break;
}
#endif /* INET */
#ifdef IPX
/* 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_IPX: {
struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
if (ipx_nullhost(*ina)) {
ina->x_host = *(union ipx_host *)(sc->le_ac.ac_enaddr);
} else {
ifp->if_flags &= ~IFF_RUNNING;
bcopy((caddr_t)ina->x_host.c_host,
(caddr_t)sc->le_ac.ac_enaddr,
sizeof sc->le_ac.ac_enaddr);
}
(*sc->if_init)(ifp->if_unit);
break;
}
#endif /* IPX */
#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->le_ac.ac_enaddr);
} else {
ifp->if_flags &= ~IFF_RUNNING;
bcopy((caddr_t)ina->x_host.c_host,
(caddr_t)sc->le_ac.ac_enaddr,
sizeof sc->le_ac.ac_enaddr);
}
(*sc->if_init)(ifp->if_unit);
break;
}
#endif /* NS */
default: {
(*sc->if_init)(ifp->if_unit);
break;
}
}
break;
}
case SIOCSIFFLAGS: {
(*sc->if_init)(ifp->if_unit);
break;
}
case SIOCADDMULTI:
case SIOCDELMULTI: {
/*
* Update multicast listeners
*/
if (cmd == SIOCADDMULTI)
error = ether_addmulti((struct ifreq *)data, &sc->le_ac);
else
error = ether_delmulti((struct ifreq *)data, &sc->le_ac);
if (error == ENETRESET) {
/* reset multicast filtering */
(*sc->if_init)(ifp->if_unit);
error = 0;
}
break;
}
default: {
error = EINVAL;
}
}
splx(s);
kdc_le[ifp->if_unit].kdc_state = (ifp->if_flags & IFF_UP)
? DC_BUSY : DC_IDLE;
return error;
}
/*
* This is the standard method of reading the DEC Address ROMS.
* I don't understand it but it does work.
*/
static int
le_read_macaddr(
le_softc_t *sc,
int ioreg,
int skippat)
{
int cksum, rom_cksum;
if (!skippat) {
int idx, idx2, found, octet;
static u_char testpat[] = { 0xFF, 0, 0x55, 0xAA, 0xFF, 0, 0x55, 0xAA };
idx2 = found = 0;
for (idx = 0; idx < 32; idx++) {
octet = LE_INB(sc, ioreg);
if (octet == testpat[idx2]) {
if (++idx2 == sizeof testpat) {
++found;
break;
}
} else {
idx2 = 0;
}
}
if (!found)
return -1;
}
cksum = 0;
sc->le_hwaddr[0] = LE_INB(sc, ioreg);
sc->le_hwaddr[1] = LE_INB(sc, ioreg);
cksum = *(u_short *) &sc->le_hwaddr[0];
sc->le_hwaddr[2] = LE_INB(sc, ioreg);
sc->le_hwaddr[3] = LE_INB(sc, ioreg);
cksum *= 2;
if (cksum > 65535) cksum -= 65535;
cksum += *(u_short *) &sc->le_hwaddr[2];
if (cksum > 65535) cksum -= 65535;
sc->le_hwaddr[4] = LE_INB(sc, ioreg);
sc->le_hwaddr[5] = LE_INB(sc, ioreg);
cksum *= 2;
if (cksum > 65535) cksum -= 65535;
cksum += *(u_short *) &sc->le_hwaddr[4];
if (cksum >= 65535) cksum -= 65535;
rom_cksum = LE_INB(sc, ioreg);
rom_cksum |= LE_INB(sc, ioreg) << 8;
if (cksum != rom_cksum)
return -1;
return 0;
}
static void
le_multi_filter(
le_softc_t *sc)
{
struct ether_multistep step;
struct ether_multi *enm;
#ifdef ISO
extern char all_es_snpa[];
#endif
MEMSET(sc->le_mctbl, 0, (sc->le_mcmask + 1) / 8);
if (sc->le_if.if_flags & IFF_ALLMULTI) {
sc->le_flags |= IFF_MULTICAST|IFF_ALLMULTI;
return;
}
sc->le_flags &= ~IFF_MULTICAST;
if (sc->le_ac.ac_ipaddr.s_addr != 0) {
le_multi_op(sc, etherbroadcastaddr, TRUE);
sc->le_flags |= LE_BRDCSTONLY|IFF_MULTICAST;
}
#ifdef ISO
le_multi_op(sc, all_es_snpa, TRUE);
#endif
ETHER_FIRST_MULTI(step, &sc->le_ac, enm);
if (enm != NULL)
sc->le_flags |= IFF_MULTICAST;
while (enm != NULL) {
if (MEMCMP(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) {
sc->le_flags |= IFF_ALLMULTI;
return;
}
le_multi_op(sc, enm->enm_addrlo, TRUE);
ETHER_NEXT_MULTI(step, enm);
sc->le_flags &= ~LE_BRDCSTONLY;
}
sc->le_flags &= ~IFF_ALLMULTI;
}
static void
le_multi_op(
le_softc_t *sc,
const u_char *mca,
int enable)
{
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) ? LE_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) ? LE_CRC32_POLY : 0);
#endif
/*
* The following two line convert the N bit index into a longword index
* and a longword mask.
*/
crc &= sc->le_mcmask;
bit = 1 << (crc & (LE_MC_NBPW -1));
idx = crc >> (LE_MC_NBPW_LOG2);
/*
* Set or clear hash filter bit in our table.
*/
if (enable) {
sc->le_mctbl[idx] |= bit; /* Set Bit */
} else {
sc->le_mctbl[idx] &= ~bit; /* Clear Bit */
}
}
#if !defined(LE_NOLEMAC)
/*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*
* Start of DEC EtherWORKS III (LEMAC) dependent code
*
*/
#define LEMAC_INTR_ENABLE(sc) \
LE_OUTB(sc, LEMAC_REG_IC, LE_INB(sc, LEMAC_REG_IC) | LEMAC_IC_ALL)
#define LEMAC_INTR_DISABLE(sc) \
LE_OUTB(sc, LEMAC_REG_IC, LE_INB(sc, LEMAC_REG_IC) & ~LEMAC_IC_ALL)
#define LEMAC_64K_MODE(mbase) (((mbase) >= 0x0A) && ((mbase) <= 0x0F))
#define LEMAC_32K_MODE(mbase) (((mbase) >= 0x14) && ((mbase) <= 0x1F))
#define LEMAC_2K_MODE(mbase) ( (mbase) >= 0x40)
static void lemac_init(int unit);
static void lemac_start(struct ifnet *ifp);
static void lemac_reset(IF_RESET_ARGS);
static void lemac_intr(le_softc_t *sc);
static void lemac_rne_intr(le_softc_t *sc);
static void lemac_tne_intr(le_softc_t *sc);
static void lemac_txd_intr(le_softc_t *sc, unsigned cs_value);
static void lemac_rxd_intr(le_softc_t *sc, unsigned cs_value);
static int lemac_read_eeprom(le_softc_t *sc);
static void lemac_init_adapmem(le_softc_t *sc);
#define LE_MCBITS_ALL_1S ((le_mcbits_t)~(le_mcbits_t)0)
static const le_mcbits_t lemac_allmulti_mctbl[16] = {
LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S,
LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S,
LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S,
LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S, LE_MCBITS_ALL_1S,
};
/*
* An IRQ mapping table. Less space than switch statement.
*/
static const int lemac_irqs[] = { IRQ5, IRQ10, IRQ11, IRQ15 };
/*
* Some tuning/monitoring variables.
*/
unsigned lemac_deftxmax = 16; /* see lemac_max above */
unsigned lemac_txnospc = 0; /* total # of tranmit starvations */
unsigned lemac_tne_intrs = 0; /* total # of tranmit done intrs */
unsigned lemac_rne_intrs = 0; /* total # of receive done intrs */
unsigned lemac_txd_intrs = 0; /* total # of tranmit error intrs */
unsigned lemac_rxd_intrs = 0; /* total # of receive error intrs */
static int
lemac_probe(
le_softc_t *sc,
const le_board_t *bd,
int *msize)
{
int irq, portval;
LE_OUTB(sc, LEMAC_REG_IOP, LEMAC_IOP_EEINIT);
DELAY(LEMAC_EEP_DELAY);
/*
* Read Ethernet address if card is present.
*/
if (le_read_macaddr(sc, LEMAC_REG_APD, 0) < 0)
return 0;
MEMCPY(sc->le_ac.ac_enaddr, sc->le_hwaddr, 6);
/*
* Clear interrupts and set IRQ.
*/
portval = LE_INB(sc, LEMAC_REG_IC) & LEMAC_IC_IRQMSK;
irq = lemac_irqs[portval >> 5];
LE_OUTB(sc, LEMAC_REG_IC, portval);
/*
* Make sure settings match.
*/
if (irq != sc->le_irq) {
printf("%s%d: lemac configuration error: expected IRQ 0x%x actual 0x%x\n",
sc->le_if.if_name, sc->le_if.if_unit, sc->le_irq, irq);
return 0;
}
/*
* Try to reset the unit
*/
sc->if_init = lemac_init;
sc->le_if.if_start = lemac_start;
sc->if_reset = lemac_reset;
sc->lemac_memmode = 2;
LE_RESET(sc);
if ((sc->le_flags & IFF_UP) == 0)
return 0;
/*
* Check for correct memory base configuration.
*/
if (vtophys(sc->le_membase) != sc->lemac_membase) {
printf("%s%d: lemac configuration error: expected iomem 0x%x actual 0x%x\n",
sc->le_if.if_name, sc->le_if.if_unit,
vtophys(sc->le_membase), sc->lemac_membase);
return 0;
}
sc->le_prodname = sc->lemac_prodname;
sc->le_mctbl = sc->lemac_mctbl;
sc->le_mcmask = (1 << LEMAC_MCTBL_BITS) - 1;
sc->lemac_txmax = lemac_deftxmax;
*msize = 2048;
le_intrvec[sc->le_if.if_unit] = lemac_intr;
return LEMAC_IOSPACE;
}
/*
* Do a hard reset of the board;
*/
static void
lemac_reset(
IF_RESET_ARGS)
{
le_softc_t *sc = &le_softc[unit];
int portval, cksum;
/*
* Initialize board..
*/
sc->le_flags &= IFF_UP;
sc->le_if.if_flags &= ~IFF_OACTIVE;
LEMAC_INTR_DISABLE(sc);
LE_OUTB(sc, LEMAC_REG_IOP, LEMAC_IOP_EEINIT);
DELAY(LEMAC_EEP_DELAY);
/* Disable Interrupts */
/* LE_OUTB(sc, LEMAC_REG_IC, LE_INB(sc, LEMAC_REG_IC) & ICR_IRQ_SEL); */
/*
* Read EEPROM information. NOTE - the placement of this function
* is important because functions hereafter may rely on information
* read from the EEPROM.
*/
if ((cksum = lemac_read_eeprom(sc)) != LEMAC_EEP_CKSUM) {
printf("%s%d: reset: EEPROM checksum failed (0x%x)\n",
sc->le_if.if_name, sc->le_if.if_unit, cksum);
return;
}
/*
* Force to 2K mode if not already configured.
*/
portval = LE_INB(sc, LEMAC_REG_MBR);
if (!LEMAC_2K_MODE(portval)) {
if (LEMAC_64K_MODE(portval)) {
portval = (((portval * 2) & 0xF) << 4);
sc->lemac_memmode = 64;
} else if (LEMAC_32K_MODE(portval)) {
portval = ((portval & 0xF) << 4);
sc->lemac_memmode = 32;
}
LE_OUTB(sc, LEMAC_REG_MBR, portval);
}
sc->lemac_membase = portval * (2 * 1024) + (512 * 1024);
/*
* Initialize Free Memory Queue, Init mcast table with broadcast.
*/
lemac_init_adapmem(sc);
sc->le_flags |= IFF_UP;
return;
}
static void
lemac_init(
int unit)
{
le_softc_t *sc = &le_softc[unit];
int s;
if ((sc->le_flags & IFF_UP) == 0)
return;
s = splimp();
/*
* If the interface has the up flag
*/
if (sc->le_if.if_flags & IFF_UP) {
int saved_cs = LE_INB(sc, LEMAC_REG_CS);
LE_OUTB(sc, LEMAC_REG_CS, saved_cs | (LEMAC_CS_TXD | LEMAC_CS_RXD));
LE_OUTB(sc, LEMAC_REG_PA0, sc->le_ac.ac_enaddr[0]);
LE_OUTB(sc, LEMAC_REG_PA1, sc->le_ac.ac_enaddr[1]);
LE_OUTB(sc, LEMAC_REG_PA2, sc->le_ac.ac_enaddr[2]);
LE_OUTB(sc, LEMAC_REG_PA3, sc->le_ac.ac_enaddr[3]);
LE_OUTB(sc, LEMAC_REG_PA4, sc->le_ac.ac_enaddr[4]);
LE_OUTB(sc, LEMAC_REG_PA5, sc->le_ac.ac_enaddr[5]);
LE_OUTB(sc, LEMAC_REG_IC, LE_INB(sc, LEMAC_REG_IC) | LEMAC_IC_IE);
if (sc->le_if.if_flags & IFF_PROMISC) {
LE_OUTB(sc, LEMAC_REG_CS, LEMAC_CS_MCE | LEMAC_CS_PME);
} else {
LEMAC_INTR_DISABLE(sc);
le_multi_filter(sc);
LE_OUTB(sc, LEMAC_REG_MPN, 0);
if ((sc->le_flags | sc->le_if.if_flags) & IFF_ALLMULTI) {
MEMCPY(&sc->le_membase[LEMAC_MCTBL_OFF], lemac_allmulti_mctbl, sizeof(lemac_allmulti_mctbl));
} else {
MEMCPY(&sc->le_membase[LEMAC_MCTBL_OFF], sc->lemac_mctbl, sizeof(sc->lemac_mctbl));
}
LE_OUTB(sc, LEMAC_REG_CS, LEMAC_CS_MCE);
}
LE_OUTB(sc, LEMAC_REG_CTL, LE_INB(sc, LEMAC_REG_CTL) ^ LEMAC_CTL_LED);
LEMAC_INTR_ENABLE(sc);
sc->le_if.if_flags |= IFF_RUNNING;
} else {
LE_OUTB(sc, LEMAC_REG_CS, LEMAC_CS_RXD|LEMAC_CS_TXD);
LEMAC_INTR_DISABLE(sc);
sc->le_if.if_flags &= ~IFF_RUNNING;
}
splx(s);
}
/*
* What to do upon receipt of an interrupt.
*/
static void
lemac_intr(
le_softc_t *sc)
{
int cs_value;
LEMAC_INTR_DISABLE(sc); /* Mask interrupts */
/*
* Determine cause of interrupt. Receive events take
* priority over Transmit.
*/
cs_value = LE_INB(sc, LEMAC_REG_CS);
/*
* Check for Receive Queue not being empty.
* Check for Transmit Done Queue not being empty.
*/
if (cs_value & LEMAC_CS_RNE)
lemac_rne_intr(sc);
if (cs_value & LEMAC_CS_TNE)
lemac_tne_intr(sc);
/*
* Check for Transmitter Disabled.
* Check for Receiver Disabled.
*/
if (cs_value & LEMAC_CS_TXD)
lemac_txd_intr(sc, cs_value);
if (cs_value & LEMAC_CS_RXD)
lemac_rxd_intr(sc, cs_value);
/*
* Toggle LED and unmask interrupts.
*/
LE_OUTB(sc, LEMAC_REG_CTL, LE_INB(sc, LEMAC_REG_CTL) ^ LEMAC_CTL_LED);
LEMAC_INTR_ENABLE(sc); /* Unmask interrupts */
}
static void
lemac_rne_intr(
le_softc_t *sc)
{
int rxcount, rxlen, rxpg;
u_char *rxptr;
lemac_rne_intrs++;
rxcount = LE_INB(sc, LEMAC_REG_RQC);
while (rxcount--) {
rxpg = LE_INB(sc, LEMAC_REG_RQ);
LE_OUTB(sc, LEMAC_REG_MPN, rxpg);
rxptr = sc->le_membase;
sc->le_if.if_ipackets++;
if (*rxptr & LEMAC_RX_OK) {
/*
* Get receive length - subtract out checksum.
*/
rxlen = ((*(u_int *)rxptr >> 8) & 0x7FF) - 4;
le_input(sc, rxptr + sizeof(u_int), rxlen, rxlen, NULL);
} else { /* end if (*rxptr & LEMAC_RX_OK) */
sc->le_if.if_ierrors++;
}
next:
LE_OUTB(sc, LEMAC_REG_FMQ, rxpg); /* Return this page to Free Memory Queue */
} /* end while (recv_count--) */
return;
}
static void
lemac_rxd_intr(
le_softc_t *sc,
unsigned cs_value)
{
/*
* Handle CS_RXD (Receiver disabled) here.
*
* Check Free Memory Queue Count. If not equal to zero
* then just turn Receiver back on. If it is equal to
* zero then check to see if transmitter is disabled.
* Process transmit TXD loop once more. If all else
* fails then do software init (0xC0 to EEPROM Init)
* and rebuild Free Memory Queue.
*/
lemac_rxd_intrs++;
/*
* Re-enable Receiver.
*/
cs_value &= ~LEMAC_CS_RXD;
LE_OUTB(sc, LEMAC_REG_CS, cs_value);
if (LE_INB(sc, LEMAC_REG_FMC) > 0)
return;
if (cs_value & LEMAC_CS_TXD)
lemac_txd_intr(sc, cs_value);
if ((LE_INB(sc, LEMAC_REG_CS) & LEMAC_CS_RXD) == 0)
return;
printf("%s%d: fatal RXD error, attempting recovery\n",
sc->le_if.if_name, sc->le_if.if_unit);
LE_RESET(sc);
if (sc->le_flags & IFF_UP) {
lemac_init(sc->le_if.if_unit);
return;
}
/*
* Error during initializion. Mark card as disabled.
*/
printf("%s%d: recovery failed -- board disabled\n",
sc->le_if.if_name, sc->le_if.if_unit);
return;
}
static void
lemac_start(
struct ifnet *ifp)
{
le_softc_t *sc = (le_softc_t *) ifp;
struct ifqueue *ifq = &ifp->if_snd;
if ((ifp->if_flags & IFF_RUNNING) == 0)
return;
LEMAC_INTR_DISABLE(sc);
while (ifq->ifq_head != NULL) {
struct mbuf *m;
int tx_pg;
u_int txhdr, txoff;
if (LE_INB(sc, LEMAC_REG_TQC) >= sc->lemac_txmax) {
ifp->if_flags |= IFF_OACTIVE;
break;
}
tx_pg = LE_INB(sc, LEMAC_REG_FMQ); /* get free memory page */
/*
* Check for good transmit page.
*/
if (tx_pg == 0 || tx_pg > sc->lemac_lastpage) {
lemac_txnospc++;
ifp->if_flags |= IFF_OACTIVE;
break;
}
IF_DEQUEUE(ifq, m);
LE_OUTB(sc, LEMAC_REG_MPN, tx_pg); /* Shift 2K window. */
/*
* The first four bytes of each transmit buffer are for
* control information. The first byte is the control
* byte, then the length (why not word aligned??), then
* the off to the buffer.
*/
txoff = (mtod(m, u_int) & (sizeof(u_long) - 1)) + LEMAC_TX_HDRSZ;
txhdr = sc->lemac_txctl | (m->m_pkthdr.len << 8) | (txoff << 24);
*(u_int *) sc->le_membase = txhdr;
/*
* Copy the packet to the board
*/
m_copydata(m, 0, m->m_pkthdr.len, sc->le_membase + txoff);
LE_OUTB(sc, LEMAC_REG_TQ, tx_pg); /* tell chip to transmit this packet */
#if NBPFILTER > 0
if (sc->le_bpf)
bpf_mtap(sc->le_bpf, m);
#endif
m_freem(m); /* free the mbuf */
}
LEMAC_INTR_ENABLE(sc);
}
static void
lemac_tne_intr(
le_softc_t *sc)
{
int txsts, txcount = LE_INB(sc, LEMAC_REG_TDC);
lemac_tne_intrs++;
while (txcount--) {
txsts = LE_INB(sc, LEMAC_REG_TDQ);
sc->le_if.if_opackets++; /* another one done */
if ((txsts & LEMAC_TDQ_COL) != LEMAC_TDQ_NOCOL)
sc->le_if.if_collisions++;
}
sc->le_if.if_flags &= ~IFF_OACTIVE;
lemac_start(&sc->le_if);
}
static void
lemac_txd_intr(
le_softc_t *sc,
unsigned cs_value)
{
/*
* Read transmit status, remove transmit buffer from
* transmit queue and place on free memory queue,
* then reset transmitter.
* Increment appropriate counters.
*/
lemac_txd_intrs++;
sc->le_if.if_oerrors++;
if (LE_INB(sc, LEMAC_REG_TS) & LEMAC_TS_ECL)
sc->le_if.if_collisions++;
sc->le_if.if_flags &= ~IFF_OACTIVE;
LE_OUTB(sc, LEMAC_REG_FMQ, LE_INB(sc, LEMAC_REG_TQ));
/* Get Page number and write it back out */
LE_OUTB(sc, LEMAC_REG_CS, cs_value & ~LEMAC_CS_TXD);
/* Turn back on transmitter */
return;
}
static int
lemac_read_eeprom(
le_softc_t *sc)
{
int word_off, cksum;
u_char *ep;
cksum = 0;
ep = sc->lemac_eeprom;
for (word_off = 0; word_off < LEMAC_EEP_SIZE / 2; word_off++) {
LE_OUTB(sc, LEMAC_REG_PI1, word_off);
LE_OUTB(sc, LEMAC_REG_IOP, LEMAC_IOP_EEREAD);
DELAY(LEMAC_EEP_DELAY);
*ep = LE_INB(sc, LEMAC_REG_EE1); cksum += *ep++;
*ep = LE_INB(sc, LEMAC_REG_EE2); cksum += *ep++;
}
/*
* Set up Transmit Control Byte for use later during transmit.
*/
sc->lemac_txctl |= LEMAC_TX_FLAGS;
if ((sc->lemac_eeprom[LEMAC_EEP_SWFLAGS] & LEMAC_EEP_SW_SQE) == 0)
sc->lemac_txctl &= ~LEMAC_TX_SQE;
if (sc->lemac_eeprom[LEMAC_EEP_SWFLAGS] & LEMAC_EEP_SW_LAB)
sc->lemac_txctl |= LEMAC_TX_LAB;
MEMCPY(sc->lemac_prodname, &sc->lemac_eeprom[LEMAC_EEP_PRDNM], LEMAC_EEP_PRDNMSZ);
sc->lemac_prodname[LEMAC_EEP_PRDNMSZ] = '\0';
return cksum % 256;
}
static void
lemac_init_adapmem(
le_softc_t *sc)
{
int pg, conf;
conf = LE_INB(sc, LEMAC_REG_CNF);
if ((sc->lemac_eeprom[LEMAC_EEP_SETUP] & LEMAC_EEP_ST_DRAM) == 0) {
sc->lemac_lastpage = 63;
conf &= ~LEMAC_CNF_DRAM;
} else {
sc->lemac_lastpage = 127;
conf |= LEMAC_CNF_DRAM;
}
LE_OUTB(sc, LEMAC_REG_CNF, conf);
for (pg = 1; pg <= sc->lemac_lastpage; pg++)
LE_OUTB(sc, LEMAC_REG_FMQ, pg);
return;
}
#endif /* !defined(LE_NOLEMAC) */
#if !defined(LE_NOLANCE)
/*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*
* Start of DEPCA (DE200/DE201/DE202/DE422 etal) support.
*
*/
static void depca_intr(le_softc_t *sc);
static int lance_init_adapmem(le_softc_t *sc);
static int lance_init_ring(le_softc_t *sc, ln_ring_t *rp, lance_ring_t *ri,
unsigned ndescs, unsigned bufoffset,
unsigned descoffset);
static void lance_init(int unit);
static void lance_reset(IF_RESET_ARGS);
static void lance_intr(le_softc_t *sc);
static int lance_rx_intr(le_softc_t *sc);
static void lance_start(struct ifnet *ifp);
static int lance_tx_intr(le_softc_t *sc);
#define LN_BUFSIZE /* 380 */ 304 /* 1520 / 4 */
#define LN_TXDESC_RATIO 2048
#define LN_DESC_MAX 128
#if LN_DOSTATS
struct {
unsigned lance_rx_misses;
unsigned lance_rx_badcrc;
unsigned lance_rx_badalign;
unsigned lance_rx_badframe;
unsigned lance_rx_buferror;
unsigned lance_tx_deferred;
unsigned lance_tx_single_collisions;
unsigned lance_tx_multiple_collisions;
unsigned lance_tx_excessive_collisions;
unsigned lance_tx_late_collisions;
unsigned lance_memory_errors;
unsigned lance_inits;
unsigned lance_tx_intrs;
unsigned lance_tx_nospc[2];
unsigned lance_tx_drains[2];
unsigned lance_tx_orphaned;
unsigned lance_tx_adoptions;
unsigned lance_tx_emptied;
unsigned lance_tx_deftxint;
unsigned lance_tx_buferror;
unsigned lance_high_txoutptr;
unsigned lance_low_txheapsize;
unsigned lance_low_txfree;
unsigned lance_tx_intr_hidescs;
/* unsigned lance_tx_intr_descs[LN_DESC_MAX]; */
unsigned lance_rx_intrs;
unsigned lance_rx_badsop;
unsigned lance_rx_contig;
unsigned lance_rx_noncontig;
unsigned lance_rx_intr_hidescs;
unsigned lance_rx_ndescs[4096 / LN_BUFSIZE];
/* unsigned lance_rx_intr_descs[LN_DESC_MAX]; */
} lance_stats;
#define LN_STAT(stat) (lance_stats.lance_ ## stat)
#define LN_MINSTAT(stat, val) (LN_STAT(stat > (val)) ? LN_STAT(stat = (val)) : 0)
#define LN_MAXSTAT(stat, val) (LN_STAT(stat < (val)) ? LN_STAT(stat = (val)) : 0)
#else
#define LN_STAT(stat) 0
#define LN_MINSTAT(stat, val) 0
#define LN_MAXSTAT(stat, val) 0
#endif
#define LN_SELCSR(sc, csrno) (LE_OUTW(sc, sc->lance_rap, csrno))
#define LN_INQCSR(sc) (LE_INW(sc, sc->lance_rap))
#define LN_WRCSR(sc, val) (LE_OUTW(sc, sc->lance_rdp, val))
#define LN_RDCSR(sc) (LE_INW(sc, sc->lance_rdp))
#define LN_ZERO(sc, vaddr, len) bzero(vaddr, len)
#define LN_COPYTO(sc, from, to, len) bcopy(from, to, len)
#define LN_SETFLAG(sc, vaddr, val) \
(((volatile u_char *) vaddr)[3] = (val))
#define LN_PUTDESC(sc, desc, vaddr) \
(((volatile u_short *) vaddr)[0] = ((u_short *) desc)[0], \
((volatile u_short *) vaddr)[2] = ((u_short *) desc)[2], \
((volatile u_short *) vaddr)[1] = ((u_short *) desc)[1])
/*
* Only get the descriptor flags and length/status. All else
* read-only.
*/
#define LN_GETDESC(sc, desc, vaddr) \
(((u_short *) desc)[1] = ((volatile u_short *) vaddr)[1], \
((u_short *) desc)[3] = ((volatile u_short *) vaddr)[3])
/*
* These definitions are specific to the DEC "DEPCA-style" NICs.
* (DEPCA, DE10x, DE20[012], DE422)
*
*/
#define DEPCA_REG_NICSR 0 /* (RW;16) NI Control / Status */
#define DEPCA_REG_RDP 4 /* (RW:16) LANCE RDP (data) register */
#define DEPCA_REG_RAP 6 /* (RW:16) LANCE RAP (address) register */
#define DEPCA_REG_ADDRROM 12 /* (R : 8) DEPCA Ethernet Address ROM */
#define DEPCA_IOSPACE 16 /* DEPCAs use 16 bytes of IO space */
#define DEPCA_NICSR_LED 0x0001 /* Light the LED on the back of the DEPCA */
#define DEPCA_NICSR_ENABINTR 0x0002 /* Enable Interrupts */
#define DEPCA_NICSR_MASKINTR 0x0004 /* Mask Interrupts */
#define DEPCA_NICSR_AAC 0x0008 /* Address Counter Clear */
#define DEPCA_NICSR_REMOTEBOOT 0x0010 /* Remote Boot Enabled (ignored) */
#define DEPCA_NICSR_32KRAM 0x0020 /* DEPCA LANCE RAM size 64K (C) / 32K (S) */
#define DEPCA_NICSR_LOW32K 0x0040 /* Bank Select (A15 = !This Bit) */
#define DEPCA_NICSR_SHE 0x0080 /* Shared RAM Enabled (ie hide ROM) */
#define DEPCA_NICSR_BOOTTMO 0x0100 /* Remote Boot Timeout (ignored) */
#define DEPCA_RDNICSR(sc) (LE_INW(sc, DEPCA_REG_NICSR))
#define DEPCA_WRNICSR(sc, val) (LE_OUTW(sc, DEPCA_REG_NICSR, val))
#define DEPCA_IDSTR_OFFSET 0xC006 /* ID String Offset */
#define DEPCA_REG_EISAID 0x80
#define DEPCA_EISAID_MASK 0xf0ffffff
#define DEPCA_EISAID_DE422 0x2042A310
typedef enum {
DEPCA_CLASSIC,
DEPCA_DE100, DEPCA_DE101,
DEPCA_EE100,
DEPCA_DE200, DEPCA_DE201, DEPCA_DE202,
DEPCA_DE422,
DEPCA_UNKNOWN
} depca_t;
static const char *depca_signatures[] = {
"DEPCA",
"DE100", "DE101",
"EE100",
"DE200", "DE201", "DE202",
"DE422",
NULL
};
static int
depca_probe(
le_softc_t *sc,
const le_board_t *bd,
int *msize)
{
unsigned nicsr, idx, idstr_offset = DEPCA_IDSTR_OFFSET;
/*
* Find out how memory we are dealing with. Adjust
* the ID string offset approriately if we are at
* 32K. Make sure the ROM is enabled.
*/
nicsr = DEPCA_RDNICSR(sc);
nicsr &= ~(DEPCA_NICSR_SHE|DEPCA_NICSR_LED|DEPCA_NICSR_ENABINTR);
if (nicsr & DEPCA_NICSR_32KRAM) {
/*
* Make we are going to read the upper
* 32K so we do read the ROM.
*/
sc->lance_ramsize = 32 * 1024;
nicsr &= ~DEPCA_NICSR_LOW32K;
sc->lance_ramoffset = 32 * 1024;
idstr_offset -= sc->lance_ramsize;
} else {
sc->lance_ramsize = 64 * 1024;
sc->lance_ramoffset = 0;
}
DEPCA_WRNICSR(sc, nicsr);
sc->le_prodname = NULL;
for (idx = 0; depca_signatures[idx] != NULL; idx++) {
if (bcmp(depca_signatures[idx], sc->le_membase + idstr_offset, 5) == 0) {
sc->le_prodname = depca_signatures[idx];
break;
}
}
if (sc->le_prodname == NULL) {
/*
* Try to get the EISA device if it's a DE422.
*/
if (sc->le_iobase > 0x1000 && (sc->le_iobase & 0x0F00) == 0x0C00
&& (LE_INL(sc, DEPCA_REG_EISAID) & DEPCA_EISAID_MASK)
== DEPCA_EISAID_DE422) {
sc->le_prodname = "DE422";
} else {
return 0;
}
}
if (idx == DEPCA_CLASSIC)
sc->lance_ramsize -= 16384; /* Can't use the ROM area on a DEPCA */
/*
* Try to read the address ROM.
* Stop the LANCE, reset the Address ROM Counter (AAC),
* read the NICSR to "clock" in the reset, and then
* re-enable the Address ROM Counter. Now read the
* address ROM.
*/
sc->lance_rdp = DEPCA_REG_RDP;
sc->lance_rap = DEPCA_REG_RAP;
sc->lance_csr3 = LN_CSR3_ALE;
sc->le_mctbl = sc->lance_initb.ln_multi_mask;
sc->le_mcmask = LN_MC_MASK;
LN_SELCSR(sc, LN_CSR0);
LN_WRCSR(sc, LN_CSR0_STOP);
if (idx < DEPCA_DE200) {
DEPCA_WRNICSR(sc, DEPCA_RDNICSR(sc) & ~DEPCA_NICSR_AAC);
DEPCA_WRNICSR(sc, DEPCA_RDNICSR(sc) | DEPCA_NICSR_AAC);
}
if (le_read_macaddr(sc, DEPCA_REG_ADDRROM, idx == DEPCA_CLASSIC) < 0)
return 0;
MEMCPY(sc->le_ac.ac_enaddr, sc->le_hwaddr, 6);
/*
* Renable shared RAM.
*/
DEPCA_WRNICSR(sc, DEPCA_RDNICSR(sc) | DEPCA_NICSR_SHE);
le_intrvec[sc->le_if.if_unit] = depca_intr;
if (!lance_init_adapmem(sc))
return 0;
sc->if_reset = lance_reset;
sc->if_init = lance_init;
sc->le_if.if_start = lance_start;
DEPCA_WRNICSR(sc, DEPCA_NICSR_SHE | DEPCA_NICSR_ENABINTR);
LE_RESET(sc);
LN_STAT(low_txfree = sc->lance_txinfo.ri_max);
LN_STAT(low_txheapsize = 0xFFFFFFFF);
*msize = sc->lance_ramsize;
return DEPCA_IOSPACE;
}
static void
depca_intr(
le_softc_t *sc)
{
DEPCA_WRNICSR(sc, DEPCA_RDNICSR(sc) ^ DEPCA_NICSR_LED);
lance_intr(sc);
}
/*
* Here's as good a place to describe our paritioning of the
* LANCE shared RAM space. (NOTE: this driver does not yet support
* the concept of a LANCE being able to DMA).
*
* First is the 24 (00:23) bytes for LANCE Initialization Block
* Next are the recieve descriptors. The number is calculated from
* how many LN_BUFSIZE buffers we can allocate (this number must
* be a power of 2). Next are the transmit descriptors. The amount
* of transmit descriptors is derived from the size of the RAM
* divided by 1K. Now come the receive buffers (one for each receive
* descriptor). Finally is the transmit heap. (no fixed buffers are
* allocated so as to make the most use of the limited space).
*/
static int
lance_init_adapmem(
le_softc_t *sc)
{
lance_addr_t rxbufoffset;
lance_addr_t rxdescoffset, txdescoffset;
unsigned rxdescs, txdescs;
/*
* First calculate how many descriptors we heap.
* Note this assumes the ramsize is a power of two.
*/
sc->lance_rxbufsize = LN_BUFSIZE;
rxdescs = 1;
while (rxdescs * sc->lance_rxbufsize < sc->lance_ramsize)
rxdescs *= 2;
rxdescs /= 2;
if (rxdescs > LN_DESC_MAX) {
sc->lance_rxbufsize *= rxdescs / LN_DESC_MAX;
rxdescs = LN_DESC_MAX;
}
txdescs = sc->lance_ramsize / LN_TXDESC_RATIO;
if (txdescs > LN_DESC_MAX)
txdescs = LN_DESC_MAX;
/*
* Now calculate where everything goes in memory
*/
rxdescoffset = sizeof(ln_initb_t);
txdescoffset = rxdescoffset + sizeof(ln_desc_t) * rxdescs;
rxbufoffset = txdescoffset + sizeof(ln_desc_t) * txdescs;
sc->le_mctbl = (le_mcbits_t *) sc->lance_initb.ln_multi_mask;
/*
* Remember these for debugging.
*/
sc->lance_raminitb = (ln_initb_t *) sc->le_membase;
sc->lance_ramdesc = (ln_desc_t *) (sc->le_membase + rxdescoffset);
/*
* Initialize the rings.
*/
if (!lance_init_ring(sc, &sc->lance_initb.ln_rxring, &sc->lance_rxinfo,
rxdescs, rxbufoffset, rxdescoffset))
return 0;
sc->lance_rxinfo.ri_heap = rxbufoffset;
sc->lance_rxinfo.ri_heapend = rxbufoffset + sc->lance_rxbufsize * rxdescs;
if (!lance_init_ring(sc, &sc->lance_initb.ln_txring, &sc->lance_txinfo,
txdescs, 0, txdescoffset))
return 0;
sc->lance_txinfo.ri_heap = sc->lance_rxinfo.ri_heapend;
sc->lance_txinfo.ri_heapend = sc->lance_ramsize;
/*
* Set CSR1 and CSR2 to the address of the init block (which
* for us is always 0.
*/
sc->lance_csr1 = LN_ADDR_LO(0 + sc->lance_ramoffset);
sc->lance_csr2 = LN_ADDR_HI(0 + sc->lance_ramoffset);
return 1;
}
static int
lance_init_ring(
le_softc_t *sc,
ln_ring_t *rp,
lance_ring_t *ri,
unsigned ndescs,
lance_addr_t bufoffset,
lance_addr_t descoffset)
{
lance_descinfo_t *di;
/*
* Initialize the ring pointer in the LANCE InitBlock
*/
rp->r_addr_lo = LN_ADDR_LO(descoffset + sc->lance_ramoffset);
rp->r_addr_hi = LN_ADDR_HI(descoffset + sc->lance_ramoffset);
rp->r_log2_size = ffs(ndescs) - 1;
/*
* Allocate the ring entry descriptors and initialize
* our ring information data structure. All these are
* our copies and do not live in the LANCE RAM.
*/
ri->ri_first = (lance_descinfo_t *) malloc(ndescs * sizeof(*di), M_DEVBUF, M_NOWAIT);
if (ri->ri_first == NULL) {
printf("lance_init_ring: malloc(%d) failed\n", ndescs * sizeof(*di));
return 0;
}
ri->ri_free = ri->ri_max = ndescs;
ri->ri_last = ri->ri_first + ri->ri_max;
for (di = ri->ri_first; di < ri->ri_last; di++) {
di->di_addr = sc->le_membase + descoffset;
di->di_mbuf = NULL;
if (bufoffset) {
di->di_bufaddr = bufoffset;
di->di_buflen = sc->lance_rxbufsize;
bufoffset += sc->lance_rxbufsize;
}
descoffset += sizeof(ln_desc_t);
}
return 1;
}
static void
lance_dumpcsrs(
le_softc_t *sc,
const char *id)
{
printf("%s%d: %s: nicsr=%04x",
sc->le_if.if_name, sc->le_if.if_unit,
id, DEPCA_RDNICSR(sc));
LN_SELCSR(sc, LN_CSR0); printf(" csr0=%04x", LN_RDCSR(sc));
LN_SELCSR(sc, LN_CSR1); printf(" csr1=%04x", LN_RDCSR(sc));
LN_SELCSR(sc, LN_CSR2); printf(" csr2=%04x", LN_RDCSR(sc));
LN_SELCSR(sc, LN_CSR3); printf(" csr3=%04x\n", LN_RDCSR(sc));
LN_SELCSR(sc, LN_CSR0);
}
static void
lance_reset(
IF_RESET_ARGS)
{
le_softc_t *sc = &le_softc[unit];
register int cnt, csr;
/* lance_dumpcsrs(sc, "lance_reset: start"); */
LN_WRCSR(sc, LN_RDCSR(sc) & ~LN_CSR0_ENABINTR);
LN_WRCSR(sc, LN_CSR0_STOP);
DELAY(100);
sc->le_flags &= ~IFF_UP;
sc->le_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
le_multi_filter(sc); /* initialize the multicast table */
if ((sc->le_flags | sc->le_if.if_flags) & IFF_ALLMULTI) {
sc->lance_initb.ln_multi_mask[0] = 0xFFFFU;
sc->lance_initb.ln_multi_mask[1] = 0xFFFFU;
sc->lance_initb.ln_multi_mask[2] = 0xFFFFU;
sc->lance_initb.ln_multi_mask[3] = 0xFFFFU;
}
sc->lance_initb.ln_physaddr[0] = ((u_short *) sc->le_ac.ac_enaddr)[0];
sc->lance_initb.ln_physaddr[1] = ((u_short *) sc->le_ac.ac_enaddr)[1];
sc->lance_initb.ln_physaddr[2] = ((u_short *) sc->le_ac.ac_enaddr)[2];
if (sc->le_if.if_flags & IFF_PROMISC) {
sc->lance_initb.ln_mode |= LN_MODE_PROMISC;
} else {
sc->lance_initb.ln_mode &= ~LN_MODE_PROMISC;
}
/*
* We force the init block to be at the start
* of the LANCE's RAM buffer.
*/
LN_COPYTO(sc, &sc->lance_initb, sc->le_membase, sizeof(sc->lance_initb));
LN_SELCSR(sc, LN_CSR1); LN_WRCSR(sc, sc->lance_csr1);
LN_SELCSR(sc, LN_CSR2); LN_WRCSR(sc, sc->lance_csr2);
LN_SELCSR(sc, LN_CSR3); LN_WRCSR(sc, sc->lance_csr3);
/* lance_dumpcsrs(sc, "lance_reset: preinit"); */
/*
* clear INITDONE and INIT the chip
*/
LN_SELCSR(sc, LN_CSR0);
LN_WRCSR(sc, LN_CSR0_INIT|LN_CSR0_INITDONE);
csr = 0;
cnt = 100;
while (cnt-- > 0) {
if (((csr = LN_RDCSR(sc)) & LN_CSR0_INITDONE) != 0)
break;
DELAY(10000);
}
if ((csr & LN_CSR0_INITDONE) == 0) { /* make sure we got out okay */
lance_dumpcsrs(sc, "lance_reset: reset failure");
} else {
/* lance_dumpcsrs(sc, "lance_reset: end"); */
sc->le_if.if_flags |= IFF_UP;
sc->le_flags |= IFF_UP;
}
}
static void
lance_init(
int unit)
{
le_softc_t *sc = &le_softc[unit];
lance_ring_t *ri;
lance_descinfo_t *di;
ln_desc_t desc;
LN_STAT(inits++);
if (sc->le_if.if_flags & IFF_RUNNING) {
LE_RESET(sc);
lance_tx_intr(sc);
/*
* If we were running, requeue any pending transmits.
*/
ri = &sc->lance_txinfo;
di = ri->ri_nextout;
while (ri->ri_free < ri->ri_max) {
if (--di == ri->ri_first)
di = ri->ri_nextout - 1;
if (di->di_mbuf == NULL)
break;
IF_PREPEND(&sc->le_if.if_snd, di->di_mbuf);
di->di_mbuf = NULL;
ri->ri_free++;
}
} else {
LE_RESET(sc);
}
/*
* Reset the transmit ring. Make sure we own all the buffers.
* Also reset the transmit heap.
*/
sc->le_if.if_flags &= ~IFF_OACTIVE;
ri = &sc->lance_txinfo;
for (di = ri->ri_first; di < ri->ri_last; di++) {
if (di->di_mbuf != NULL) {
m_freem(di->di_mbuf);
di->di_mbuf = NULL;
}
desc.d_flag = 0;
desc.d_addr_lo = LN_ADDR_LO(ri->ri_heap + sc->lance_ramoffset);
desc.d_addr_hi = LN_ADDR_HI(ri->ri_heap + sc->lance_ramoffset);
desc.d_buflen = 0;
LN_PUTDESC(sc, &desc, di->di_addr);
}
ri->ri_nextin = ri->ri_nextout = ri->ri_first;
ri->ri_free = ri->ri_max;
ri->ri_outptr = ri->ri_heap;
ri->ri_outsize = ri->ri_heapend - ri->ri_heap;
ri = &sc->lance_rxinfo;
desc.d_flag = LN_DFLAG_OWNER;
desc.d_buflen = 0 - sc->lance_rxbufsize;
for (di = ri->ri_first; di < ri->ri_last; di++) {
desc.d_addr_lo = LN_ADDR_LO(di->di_bufaddr + sc->lance_ramoffset);
desc.d_addr_hi = LN_ADDR_HI(di->di_bufaddr + sc->lance_ramoffset);
LN_PUTDESC(sc, &desc, di->di_addr);
}
ri->ri_nextin = ri->ri_nextout = ri->ri_first;
ri->ri_outptr = ri->ri_heap;
ri->ri_outsize = ri->ri_heapend - ri->ri_heap;
ri->ri_free = 0;
if (sc->le_if.if_flags & IFF_UP) {
sc->le_if.if_flags |= IFF_RUNNING;
LN_WRCSR(sc, LN_CSR0_START|LN_CSR0_INITDONE|LN_CSR0_ENABINTR);
/* lance_dumpcsrs(sc, "lance_init: up"); */
lance_start(&sc->le_if);
} else {
/* lance_dumpcsrs(sc, "lance_init: down"); */
sc->le_if.if_flags &= ~IFF_RUNNING;
}
}
static void
lance_intr(
le_softc_t *sc)
{
unsigned oldcsr;
oldcsr = LN_RDCSR(sc);
oldcsr &= ~LN_CSR0_ENABINTR;
LN_WRCSR(sc, oldcsr);
LN_WRCSR(sc, LN_CSR0_ENABINTR);
if (oldcsr & LN_CSR0_ERRSUM) {
if (oldcsr & LN_CSR0_MISS) {
/*
* LN_CSR0_MISS is signaled when the LANCE receiver
* loses a packet because it doesn't own a receive
* descriptor. Rev. D LANCE chips, which are no
* longer used, require a chip reset as described
* below.
*/
LN_STAT(rx_misses++);
}
if (oldcsr & LN_CSR0_MEMERROR) {
LN_STAT(memory_errors++);
if (oldcsr & (LN_CSR0_RXON|LN_CSR0_TXON)) {
lance_init(sc->le_if.if_unit);
return;
}
}
}
if ((oldcsr & LN_CSR0_RXINT) && lance_rx_intr(sc)) {
lance_init(sc->le_if.if_unit);
return;
}
if (oldcsr & LN_CSR0_TXINT) {
if (lance_tx_intr(sc))
lance_start(&sc->le_if);
}
if (oldcsr == (LN_CSR0_PENDINTR|LN_CSR0_RXON|LN_CSR0_TXON))
printf("%s%d: lance_intr: stray interrupt\n",
sc->le_if.if_name, sc->le_if.if_unit);
}
static int
lance_rx_intr(
le_softc_t *sc)
{
lance_ring_t *ri = &sc->lance_rxinfo;
lance_descinfo_t *eop;
ln_desc_t desc;
int ndescs, total_len, rxdescs;
LN_STAT(rx_intrs++);
for (rxdescs = 0;;) {
/*
* Now to try to find the end of this packet chain.
*/
for (ndescs = 1, eop = ri->ri_nextin;; ndescs++) {
/*
* If we don't own this descriptor, the packet ain't
* all here so return because we are done.
*/
LN_GETDESC(sc, &desc, eop->di_addr);
if (desc.d_flag & LN_DFLAG_OWNER)
return 0;
/*
* In case we have missed a packet and gotten the
* LANCE confused, make sure we are pointing at the
* start of a packet. If we aren't, something is really
* strange so reinit the LANCE.
*/
if (desc.d_flag & LN_DFLAG_RxBUFERROR) {
LN_STAT(rx_buferror++);
return 1;
}
if ((desc.d_flag & LN_DFLAG_SOP) && eop != ri->ri_nextin) {
LN_STAT(rx_badsop++);
return 1;
}
if (desc.d_flag & LN_DFLAG_EOP)
break;
if (++eop == ri->ri_last)
eop = ri->ri_first;
}
total_len = (desc.d_status & LN_DSTS_RxLENMASK) - 4;
if ((desc.d_flag & LN_DFLAG_RxERRSUM) == 0) {
/*
* Valid Packet -- If the SOP is less than or equal to the EOP
* or the length is less than the receive buffer size, then the
* packet is contiguous in memory and can be copied in one shot.
* Otherwise we need to copy two segments to get the entire
* packet.
*/
if (ri->ri_nextin <= eop || total_len <= ri->ri_heapend - ri->ri_nextin->di_bufaddr) {
le_input(sc, sc->le_membase + ri->ri_nextin->di_bufaddr,
total_len, total_len, NULL);
LN_STAT(rx_contig++);
} else {
le_input(sc, sc->le_membase + ri->ri_nextin->di_bufaddr,
total_len,
ri->ri_heapend - ri->ri_nextin->di_bufaddr,
sc->le_membase + ri->ri_first->di_bufaddr);
LN_STAT(rx_noncontig++);
}
} else {
/*
* If the packet is bad, increment the
* counters.
*/
sc->le_if.if_ierrors++;
if (desc.d_flag & LN_DFLAG_RxBADCRC)
LN_STAT(rx_badcrc++);
if (desc.d_flag & LN_DFLAG_RxOVERFLOW)
LN_STAT(rx_badalign++);
if (desc.d_flag & LN_DFLAG_RxFRAMING)
LN_STAT(rx_badframe++);
}
sc->le_if.if_ipackets++;
LN_STAT(rx_ndescs[ndescs-1]++);
rxdescs += ndescs;
while (ndescs-- > 0) {
LN_SETFLAG(sc, ri->ri_nextin->di_addr, LN_DFLAG_OWNER);
if (++ri->ri_nextin == ri->ri_last)
ri->ri_nextin = ri->ri_first;
}
}
/* LN_STAT(rx_intr_descs[rxdescs]++); */
LN_MAXSTAT(rx_intr_hidescs, rxdescs);
return 0;
}
static void
lance_start(
struct ifnet *ifp)
{
le_softc_t *sc = (le_softc_t *) ifp;
struct ifqueue *ifq = &ifp->if_snd;
lance_ring_t *ri = &sc->lance_txinfo;
lance_descinfo_t *di;
ln_desc_t desc;
unsigned len, slop;
struct mbuf *m, *m0;
caddr_t bp;
if ((ifp->if_flags & IFF_RUNNING) == 0)
return;
for (;;) {
IF_DEQUEUE(ifq, m);
if (m == NULL)
break;
/*
* Make the packet meets the minimum size for Ethernet.
* The slop is so that we also use an even number of longwards.
*/
len = ETHERMIN + sizeof(struct ether_header);
if (m->m_pkthdr.len > len)
len = m->m_pkthdr.len;
slop = (8 - len) & 3;
/*
* If there are no free ring entries (there must be always
* one owned by the host), or there's not enough space for
* this packet, or this packet would wrap around the end
* of LANCE RAM then wait for the transmits to empty for
* space and ring entries to become available.
*/
if (ri->ri_free == 1 || len + slop > ri->ri_outsize) {
/*
* Try to see if we can free up anything off the transit ring.
*/
if (lance_tx_intr(sc) > 0) {
LN_STAT(tx_drains[0]++);
IF_PREPEND(ifq, m);
continue;
}
LN_STAT(tx_nospc[0]++);
break;
}
if (len + slop > ri->ri_heapend - ri->ri_outptr) {
/*
* Since the packet won't fit in the end of the transmit
* heap, see if there is space at the beginning of the transmit
* heap. If not, try again when there is space.
*/
LN_STAT(tx_orphaned++);
slop += ri->ri_heapend - ri->ri_outptr;
if (len + slop > ri->ri_outsize) {
LN_STAT(tx_nospc[1]++);
break;
}
/*
* Point to the beginning of the heap
*/
ri->ri_outptr = ri->ri_heap;
LN_STAT(tx_adoptions++);
}
/*
* Initialize the descriptor (saving the buffer address,
* buffer length, and mbuf) and write the packet out
* to the board.
*/
di = ri->ri_nextout;
di->di_bufaddr = ri->ri_outptr;
di->di_buflen = len + slop;
di->di_mbuf = m;
bp = sc->le_membase + di->di_bufaddr;
for (m0 = m; m0 != NULL; m0 = m0->m_next) {
LN_COPYTO(sc, mtod(m0, caddr_t), bp, m0->m_len);
bp += m0->m_len;
}
/*
* Zero out the remainder if needed (< ETHERMIN).
*/
if (m->m_pkthdr.len < len)
LN_ZERO(sc, bp, len - m->m_pkthdr.len);
/*
* Finally, copy out the descriptor and tell the
* LANCE to transmit!.
*/
desc.d_buflen = 0 - len;
desc.d_addr_lo = LN_ADDR_LO(di->di_bufaddr + sc->lance_ramoffset);
desc.d_addr_hi = LN_ADDR_HI(di->di_bufaddr + sc->lance_ramoffset);
desc.d_flag = LN_DFLAG_SOP|LN_DFLAG_EOP|LN_DFLAG_OWNER;
LN_PUTDESC(sc, &desc, di->di_addr);
LN_WRCSR(sc, LN_CSR0_TXDEMAND|LN_CSR0_ENABINTR);
/*
* Do our bookkeeping with our transmit heap.
* (if we wrap, point back to the beginning).
*/
ri->ri_outptr += di->di_buflen;
ri->ri_outsize -= di->di_buflen;
LN_MAXSTAT(high_txoutptr, ri->ri_outptr);
LN_MINSTAT(low_txheapsize, ri->ri_outsize);
if (ri->ri_outptr == ri->ri_heapend)
ri->ri_outptr = ri->ri_heap;
ri->ri_free--;
if (++ri->ri_nextout == ri->ri_last)
ri->ri_nextout = ri->ri_first;
LN_MINSTAT(low_txfree, ri->ri_free);
}
if (m != NULL) {
ifp->if_flags |= IFF_OACTIVE;
IF_PREPEND(ifq, m);
}
}
static int
lance_tx_intr(
le_softc_t *sc)
{
lance_ring_t *ri = &sc->lance_txinfo;
unsigned xmits;
LN_STAT(tx_intrs++);
for (xmits = 0; ri->ri_free < ri->ri_max; ) {
ln_desc_t desc;
LN_GETDESC(sc, &desc, ri->ri_nextin->di_addr);
if (desc.d_flag & LN_DFLAG_OWNER)
break;
if (desc.d_flag & (LN_DFLAG_TxONECOLL|LN_DFLAG_TxMULTCOLL))
sc->le_if.if_collisions++;
if (desc.d_flag & LN_DFLAG_TxDEFERRED)
LN_STAT(tx_deferred++);
if (desc.d_flag & LN_DFLAG_TxONECOLL)
LN_STAT(tx_single_collisions++);
if (desc.d_flag & LN_DFLAG_TxMULTCOLL)
LN_STAT(tx_multiple_collisions++);
if (desc.d_flag & LN_DFLAG_TxERRSUM) {
if (desc.d_status & (LN_DSTS_TxUNDERFLOW|LN_DSTS_TxBUFERROR|
LN_DSTS_TxEXCCOLL|LN_DSTS_TxLATECOLL)) {
if (desc.d_status & LN_DSTS_TxEXCCOLL) {
unsigned tdr;
LN_STAT(tx_excessive_collisions++);
if ((tdr = (desc.d_status & LN_DSTS_TxTDRMASK)) > 0) {
tdr *= 100;
printf("%s%d: lance: warning: excessive collisions: TDR %dns (%d-%dm)\n",
sc->le_if.if_name, sc->le_if.if_unit,
tdr, (tdr*99)/1000, (tdr*117)/1000);
}
}
if (desc.d_status & LN_DSTS_TxBUFERROR)
LN_STAT(tx_buferror++);
sc->le_if.if_oerrors++;
if ((desc.d_status & LN_DSTS_TxLATECOLL) == 0) {
lance_init(sc->le_if.if_unit);
return 0;
} else {
LN_STAT(tx_late_collisions++);
}
}
}
m_freem(ri->ri_nextin->di_mbuf);
ri->ri_nextin->di_mbuf = NULL;
sc->le_if.if_opackets++;
ri->ri_free++;
ri->ri_outsize += ri->ri_nextin->di_buflen;
if (++ri->ri_nextin == ri->ri_last)
ri->ri_nextin = ri->ri_first;
sc->le_if.if_flags &= ~IFF_OACTIVE;
xmits++;
}
if (ri->ri_free == ri->ri_max)
LN_STAT(tx_emptied++);
/* LN_STAT(tx_intr_descs[xmits]++); */
LN_MAXSTAT(tx_intr_hidescs, xmits);
return xmits;
}
#endif /* !defined(LE_NOLANCE) */
#endif /* NLE > 0 */
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