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NetBSD/sys/dev/isa/if_iy.c

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/* $NetBSD: if_iy.c,v 1.20 1998/02/03 16:22:01 is Exp $ */
/* #define IYDEBUG */
/* #define IYMEMDEBUG */
/*-
* Copyright (c) 1996 Ignatios Souvatzis.
* 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 contains software developed by Ignatios Souvatzis for
* the NetBSD project.
* 4. The names of the author may not be used to endorse or promote products
* derived from this software without 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.
*/
#include "bpfilter.h"
#include "rnd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/buf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/device.h>
#if NRND > 0
#include <sys/rnd.h>
#endif
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/if_ether.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_inarp.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#if defined(SIOCSIFMEDIA)
#include <net/if_media.h>
#endif
#include <vm/vm.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/ic/i82595reg.h>
#define ETHER_MIN_LEN (ETHERMIN + sizeof(struct ether_header) + 4)
#define ETHER_MAX_LEN (ETHERMTU + sizeof(struct ether_header) + 4)
/*
* Ethernet status, per interface.
*/
struct iy_softc {
struct device sc_dev;
void *sc_ih;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct ethercom sc_ethercom;
struct ifmedia iy_ifmedia;
int iy_media;
int mappedirq;
int hard_vers;
int promisc;
int sram, tx_size, rx_size;
int tx_start, tx_end, tx_last;
int rx_start;
#ifdef IYDEBUG
int sc_debug;
#endif
#if NRND > 0
rndsource_element_t rnd_source;
#endif
};
void iywatchdog __P((struct ifnet *));
int iyioctl __P((struct ifnet *, u_long, caddr_t));
int iyintr __P((void *));
void iyinit __P((struct iy_softc *));
void iystop __P((struct iy_softc *));
void iystart __P((struct ifnet *));
void iy_intr_rx __P((struct iy_softc *));
void iy_intr_tx __P((struct iy_softc *));
void iyreset __P((struct iy_softc *));
void iy_readframe __P((struct iy_softc *, int));
void iy_drop_packet_buffer __P((struct iy_softc *));
void iy_find_mem_size __P((struct iy_softc *));
void iyrint __P((struct iy_softc *));
void iytint __P((struct iy_softc *));
void iyxmit __P((struct iy_softc *));
void iyget __P((struct iy_softc *, bus_space_tag_t, bus_space_handle_t, int));
void iyprobemem __P((struct iy_softc *));
static __inline void eepromwritebit __P((bus_space_tag_t, bus_space_handle_t,
int));
static __inline int eepromreadbit __P((bus_space_tag_t, bus_space_handle_t));
/*
* void iymeminit __P((void *, struct iy_softc *));
* static int iy_mc_setup __P((struct iy_softc *, void *));
* static void iy_mc_reset __P((struct iy_softc *));
*/
#ifdef IYDEBUGX
void print_rbd __P((volatile struct iy_recv_buf_desc *));
int in_ifrint = 0;
int in_iftint = 0;
#endif
int iy_mediachange __P((struct ifnet *));
void iy_mediastatus __P((struct ifnet *, struct ifmediareq *));
#ifdef __BROKEN_INDIRECT_CONFIG
int iyprobe __P((struct device *, void *, void *));
#else
int iyprobe __P((struct device *, struct cfdata *, void *));
#endif
void iyattach __P((struct device *, struct device *, void *));
static u_int16_t eepromread __P((bus_space_tag_t, bus_space_handle_t, int));
static int eepromreadall __P((bus_space_tag_t, bus_space_handle_t, u_int16_t *,
int));
struct cfattach iy_ca = {
sizeof(struct iy_softc), iyprobe, iyattach
};
static u_int8_t eepro_irqmap[] = EEPP_INTMAP;
static u_int8_t eepro_revirqmap[] = EEPP_RINTMAP;
int
iyprobe(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
struct isa_attach_args *ia = aux;
u_int16_t eaddr[8];
bus_space_tag_t iot;
bus_space_handle_t ioh;
u_int8_t c, d;
iot = ia->ia_iot;
if (ia->ia_iobase == IOBASEUNK)
return 0;
if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh))
return 0;
/* try to find the round robin sig: */
c = bus_space_read_1(iot, ioh, ID_REG);
if ((c & ID_REG_MASK) != ID_REG_SIG)
goto out;
d = bus_space_read_1(iot, ioh, ID_REG);
if ((d & ID_REG_MASK) != ID_REG_SIG)
goto out;
if (((d-c) & R_ROBIN_BITS) != 0x40)
goto out;
d = bus_space_read_1(iot, ioh, ID_REG);
if ((d & ID_REG_MASK) != ID_REG_SIG)
goto out;
if (((d-c) & R_ROBIN_BITS) != 0x80)
goto out;
d = bus_space_read_1(iot, ioh, ID_REG);
if ((d & ID_REG_MASK) != ID_REG_SIG)
goto out;
if (((d-c) & R_ROBIN_BITS) != 0xC0)
goto out;
d = bus_space_read_1(iot, ioh, ID_REG);
if ((d & ID_REG_MASK) != ID_REG_SIG)
goto out;
if (((d-c) & R_ROBIN_BITS) != 0x00)
goto out;
#ifdef IYDEBUG
printf("iyprobe verified working ID reg.\n");
#endif
if (eepromreadall(iot, ioh, eaddr, 8))
goto out;
if (ia->ia_irq == IRQUNK)
ia->ia_irq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int];
if (ia->ia_irq >= sizeof(eepro_revirqmap))
goto out;
if (eepro_revirqmap[ia->ia_irq] == 0xff)
goto out;
/* now lets reset the chip */
bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD);
delay(200);
ia->ia_iosize = 16;
bus_space_unmap(iot, ioh, 16);
return 1; /* found */
out:
bus_space_unmap(iot, ioh, 16);
return 0;
}
void
iyattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct iy_softc *sc = (void *)self;
struct isa_attach_args *ia = aux;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
bus_space_tag_t iot;
bus_space_handle_t ioh;
unsigned temp;
u_int16_t eaddr[8];
u_int8_t myaddr[ETHER_ADDR_LEN];
int eirq;
iot = ia->ia_iot;
if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh)) {
printf(": can't map i/o space\n");
return;
}
sc->sc_iot = iot;
sc->sc_ioh = ioh;
sc->mappedirq = eepro_revirqmap[ia->ia_irq];
/* now let's reset the chip */
bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD);
delay(200);
iyprobemem(sc);
bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
ifp->if_softc = sc;
ifp->if_start = iystart;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS;
/* XXX todo: | IFF_MULTICAST */
ifp->if_ioctl = iyioctl;
ifp->if_watchdog = iywatchdog;
(void)eepromreadall(iot, ioh, eaddr, 8);
sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev;
#ifdef DIAGNOSTICS
if ((eaddr[EEPPEther0] !=
eepromread(iot, ioh, EEPPEther0a)) &&
(eaddr[EEPPEther1] !=
eepromread(iot, ioh, EEPPEther1a)) &&
(eaddr[EEPPEther2] !=
eepromread(iot, ioh, EEPPEther2a)))
printf("EEPROM Ethernet address differs from copy\n");
#endif
myaddr[1] = eaddr[EEPPEther0] & 0xFF;
myaddr[0] = eaddr[EEPPEther0] >> 8;
myaddr[3] = eaddr[EEPPEther1] & 0xFF;
myaddr[2] = eaddr[EEPPEther1] >> 8;
myaddr[5] = eaddr[EEPPEther2] & 0xFF;
myaddr[4] = eaddr[EEPPEther2] >> 8;
ifmedia_init(&sc->iy_ifmedia, 0, iy_mediachange, iy_mediastatus);
ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_10_2, 0, NULL);
ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_10_5, 0, NULL);
ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_10_T, 0, NULL);
ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(&sc->iy_ifmedia, IFM_ETHER | IFM_AUTO);
/* Attach the interface. */
if_attach(ifp);
ether_ifattach(ifp, myaddr);
printf(": address %s, rev. %d, %d kB\n",
ether_sprintf(myaddr),
sc->hard_vers, sc->sram/1024);
eirq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int];
if (eirq != ia->ia_irq)
printf("%s: EEPROM irq setting %d ignored\n",
sc->sc_dev.dv_xname, eirq);
#if NBPFILTER > 0
bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, iyintr, sc);
#if NRND > 0
rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, RND_TYPE_NET);
#endif
temp = bus_space_read_1(iot, ioh, INT_NO_REG);
bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq);
}
void
iystop(sc)
struct iy_softc *sc;
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
#ifdef IYDEBUG
u_int p, v;
#endif
iot = sc->sc_iot;
ioh = sc->sc_ioh;
bus_space_write_1(iot, ioh, COMMAND_REG, RCV_DISABLE_CMD);
bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS);
bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS);
bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD);
delay(200);
#ifdef IYDEBUG
printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n",
sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last);
p = sc->tx_last;
if (!p)
p = sc->tx_start;
do {
bus_space_write_2(iot, ioh, HOST_ADDR_REG, p);
v = bus_space_read_2(iot, ioh, MEM_PORT_REG);
printf("0x%04x: %b ", p, v, "\020\006Ab\010Dn");
v = bus_space_read_2(iot, ioh, MEM_PORT_REG);
printf("0x%b", v, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL");
p = bus_space_read_2(iot, ioh, MEM_PORT_REG);
printf(" 0x%04x", p);
v = bus_space_read_2(iot, ioh, MEM_PORT_REG);
printf(" 0x%b\n", v, "\020\020Ch");
} while (v & 0x8000);
#endif
sc->tx_start = sc->tx_end = sc->rx_size;
sc->tx_last = 0;
sc->sc_ethercom.ec_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
}
void
iyreset(sc)
struct iy_softc *sc;
{
int s;
s = splimp();
iystop(sc);
iyinit(sc);
splx(s);
}
void
iyinit(sc)
struct iy_softc *sc;
{
int i;
unsigned temp;
struct ifnet *ifp;
bus_space_tag_t iot;
bus_space_handle_t ioh;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
ifp = &sc->sc_ethercom.ec_if;
#ifdef IYDEBUG
printf("ifp is %p\n", ifp);
#endif
bus_space_write_1(iot, ioh, 0, BANK_SEL(2));
temp = bus_space_read_1(iot, ioh, EEPROM_REG);
if (temp & 0x10)
bus_space_write_1(iot, ioh, EEPROM_REG, temp & ~0x10);
for (i=0; i<6; ++i) {
bus_space_write_1(iot, ioh, I_ADD(i), LLADDR(ifp->if_sadl)[i]);
}
temp = bus_space_read_1(iot, ioh, REG1);
bus_space_write_1(iot, ioh, REG1,
temp | XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | RCV_DISCARD_BAD);
temp = bus_space_read_1(iot, ioh, RECV_MODES_REG);
bus_space_write_1(iot, ioh, RECV_MODES_REG, temp | MATCH_BRDCST);
#ifdef IYDEBUG
printf("%s: RECV_MODES were %b set to %b\n",
sc->sc_dev.dv_xname,
temp, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA",
temp|MATCH_BRDCST,
"\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA");
#endif
delay(500000); /* for the hardware to test for the connector */
temp = bus_space_read_1(iot, ioh, MEDIA_SELECT);
#ifdef IYDEBUG
printf("%s: media select was 0x%b ", sc->sc_dev.dv_xname,
temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC");
#endif
temp = (temp & TEST_MODE_MASK);
switch(IFM_SUBTYPE(sc->iy_ifmedia.ifm_media)) {
case IFM_10_5:
temp &= ~ (BNC_BIT | TPE_BIT);
break;
case IFM_10_2:
temp = (temp & ~TPE_BIT) | BNC_BIT;
break;
case IFM_10_T:
temp = (temp & ~BNC_BIT) | TPE_BIT;
break;
default:
/* nothing; leave as it is */
}
switch (temp & (BNC_BIT | TPE_BIT)) {
case BNC_BIT:
sc->iy_media = IFM_ETHER | IFM_10_2;
break;
case TPE_BIT:
sc->iy_media = IFM_ETHER | IFM_10_T;
break;
default:
sc->iy_media = IFM_ETHER | IFM_10_5;
}
bus_space_write_1(iot, ioh, MEDIA_SELECT, temp);
#ifdef IYDEBUG
printf("changed to 0x%b\n",
temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC");
#endif
bus_space_write_1(iot, ioh, 0, BANK_SEL(0));
bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS);
bus_space_write_1(iot, ioh, 0, BANK_SEL(1));
temp = bus_space_read_1(iot, ioh, INT_NO_REG);
bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq);
#ifdef IYDEBUG
printf("%s: int no was %b\n", sc->sc_dev.dv_xname,
temp, "\020\4bad_irq\010flash/boot present");
temp = bus_space_read_1(iot, ioh, INT_NO_REG);
printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname,
temp, "\020\4BAD IRQ\010flash/boot present");
#endif
bus_space_write_1(iot, ioh, RCV_LOWER_LIMIT_REG, 0);
bus_space_write_1(iot, ioh, RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8);
bus_space_write_1(iot, ioh, XMT_LOWER_LIMIT_REG, sc->rx_size >> 8);
bus_space_write_1(iot, ioh, XMT_UPPER_LIMIT_REG, sc->sram >> 8);
temp = bus_space_read_1(iot, ioh, REG1);
#ifdef IYDEBUG
printf("%s: HW access is %b\n", sc->sc_dev.dv_xname,
temp, "\020\2WORD_WIDTH\010INT_ENABLE");
#endif
bus_space_write_1(iot, ioh, REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */
#ifdef IYDEBUG
temp = bus_space_read_1(iot, ioh, REG1);
printf("%s: HW access is %b\n", sc->sc_dev.dv_xname,
temp, "\020\2WORD_WIDTH\010INT_ENABLE");
#endif
bus_space_write_1(iot, ioh, 0, BANK_SEL(0));
bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT));
bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); /* clear ints */
bus_space_write_2(iot, ioh, RCV_START_LOW, 0);
bus_space_write_2(iot, ioh, RCV_STOP_LOW, sc->rx_size - 2);
sc->rx_start = 0;
bus_space_write_1(iot, ioh, 0, SEL_RESET_CMD);
delay(200);
bus_space_write_2(iot, ioh, XMT_ADDR_REG, sc->rx_size);
sc->tx_start = sc->tx_end = sc->rx_size;
sc->tx_last = 0;
bus_space_write_1(iot, ioh, 0, RCV_ENABLE_CMD);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
}
void
iystart(ifp)
struct ifnet *ifp;
{
struct iy_softc *sc;
struct mbuf *m0, *m;
u_int len, pad, last, end;
u_int llen, residual;
int avail;
caddr_t data;
u_int16_t resval, stat;
bus_space_tag_t iot;
bus_space_handle_t ioh;
#ifdef IYDEBUG
printf("iystart called\n");
#endif
if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
return;
sc = ifp->if_softc;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
while ((m0 = ifp->if_snd.ifq_head) != NULL) {
#ifdef IYDEBUG
printf("%s: trying to write another packet to the hardware\n",
sc->sc_dev.dv_xname);
#endif
/* We need to use m->m_pkthdr.len, so require the header */
if ((m0->m_flags & M_PKTHDR) == 0)
panic("iystart: no header mbuf");
len = m0->m_pkthdr.len;
pad = len & 1;
#ifdef IYDEBUG
printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len);
#endif
if (len < ETHER_MIN_LEN) {
pad = ETHER_MIN_LEN - len;
}
if (len + pad > ETHER_MAX_LEN) {
/* packet is obviously too large: toss it */
++ifp->if_oerrors;
IF_DEQUEUE(&ifp->if_snd, m0);
m_freem(m0);
continue;
}
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m0);
#endif
avail = sc->tx_start - sc->tx_end;
if (avail <= 0)
avail += sc->tx_size;
#ifdef IYDEBUG
printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail);
#endif
/*
* we MUST RUN at splnet here ---
* XXX todo: or even turn off the boards ints ??? hm...
*/
/* See if there is room to put another packet in the buffer. */
if ((len+pad+2*I595_XMT_HDRLEN) > avail) {
#ifdef IYDEBUG
printf("%s: len = %d, avail = %d, setting OACTIVE\n",
sc->sc_dev.dv_xname, len, avail);
#endif
ifp->if_flags |= IFF_OACTIVE;
return;
}
/* we know it fits in the hardware now, so dequeue it */
IF_DEQUEUE(&ifp->if_snd, m0);
last = sc->tx_end;
end = last + pad + len + I595_XMT_HDRLEN;
if (end >= sc->sram) {
if ((sc->sram - last) <= I595_XMT_HDRLEN) {
/* keep header in one piece */
last = sc->rx_size;
end = last + pad + len + I595_XMT_HDRLEN;
} else
end -= sc->tx_size;
}
bus_space_write_2(iot, ioh, HOST_ADDR_REG, last);
bus_space_write_2(iot, ioh, MEM_PORT_REG, XMT_CMD);
bus_space_write_2(iot, ioh, MEM_PORT_REG, 0);
bus_space_write_2(iot, ioh, MEM_PORT_REG, 0);
bus_space_write_2(iot, ioh, MEM_PORT_REG, len + pad);
residual = resval = 0;
while ((m = m0)!=0) {
data = mtod(m, caddr_t);
llen = m->m_len;
if (residual) {
#ifdef IYDEBUG
printf("%s: merging residual with next mbuf.\n",
sc->sc_dev.dv_xname);
#endif
resval |= *data << 8;
bus_space_write_2(iot, ioh, MEM_PORT_REG, resval);
--llen;
++data;
}
if (llen > 1)
bus_space_write_multi_2(iot, ioh, MEM_PORT_REG,
data, llen>>1);
residual = llen & 1;
if (residual) {
resval = *(data + llen - 1);
#ifdef IYDEBUG
printf("%s: got odd mbuf to send.\n",
sc->sc_dev.dv_xname);
#endif
}
MFREE(m, m0);
}
if (residual)
bus_space_write_2(iot, ioh, MEM_PORT_REG, resval);
pad >>= 1;
while (pad-- > 0)
bus_space_write_2(iot, ioh, MEM_PORT_REG, 0);
#ifdef IYDEBUG
printf("%s: new last = 0x%x, end = 0x%x.\n",
sc->sc_dev.dv_xname, last, end);
printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n",
sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last);
#endif
if (sc->tx_start != sc->tx_end) {
bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_COUNT);
stat = bus_space_read_2(iot, ioh, MEM_PORT_REG);
bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_CHAIN);
bus_space_write_2(iot, ioh, MEM_PORT_REG, last);
bus_space_write_2(iot, ioh, MEM_PORT_REG, stat | CHAIN);
#ifdef IYDEBUG
printf("%s: setting 0x%x to 0x%x\n",
sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT,
stat | CHAIN);
#endif
}
stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); /* dummy read */
/* XXX todo: enable ints here if disabled */
++ifp->if_opackets;
if (sc->tx_start == sc->tx_end) {
bus_space_write_2(iot, ioh, XMT_ADDR_REG, last);
bus_space_write_1(iot, ioh, 0, XMT_CMD);
sc->tx_start = last;
#ifdef IYDEBUG
printf("%s: writing 0x%x to XAR and giving XCMD\n",
sc->sc_dev.dv_xname, last);
#endif
} else {
bus_space_write_1(iot, ioh, 0, RESUME_XMT_CMD);
#ifdef IYDEBUG
printf("%s: giving RESUME_XCMD\n",
sc->sc_dev.dv_xname);
#endif
}
sc->tx_last = last;
sc->tx_end = end;
}
}
static __inline void
eepromwritebit(iot, ioh, what)
bus_space_tag_t iot;
bus_space_handle_t ioh;
int what;
{
bus_space_write_1(iot, ioh, EEPROM_REG, what);
delay(1);
bus_space_write_1(iot, ioh, EEPROM_REG, what|EESK);
delay(1);
bus_space_write_1(iot, ioh, EEPROM_REG, what);
delay(1);
}
static __inline int
eepromreadbit(iot, ioh)
bus_space_tag_t iot;
bus_space_handle_t ioh;
{
int b;
bus_space_write_1(iot, ioh, EEPROM_REG, EECS|EESK);
delay(1);
b = bus_space_read_1(iot, ioh, EEPROM_REG);
bus_space_write_1(iot, ioh, EEPROM_REG, EECS);
delay(1);
return ((b & EEDO) != 0);
}
static u_int16_t
eepromread(iot, ioh, offset)
bus_space_tag_t iot;
bus_space_handle_t ioh;
int offset;
{
volatile int i;
volatile int j;
volatile u_int16_t readval;
bus_space_write_1(iot, ioh, 0, BANK_SEL(2));
delay(1);
bus_space_write_1(iot, ioh, EEPROM_REG, EECS); /* XXXX??? */
delay(1);
eepromwritebit(iot, ioh, EECS|EEDI);
eepromwritebit(iot, ioh, EECS|EEDI);
eepromwritebit(iot, ioh, EECS);
for (j=5; j>=0; --j) {
if ((offset>>j) & 1)
eepromwritebit(iot, ioh, EECS|EEDI);
else
eepromwritebit(iot, ioh, EECS);
}
for (readval=0, i=0; i<16; ++i) {
readval<<=1;
readval |= eepromreadbit(iot, ioh);
}
bus_space_write_1(iot, ioh, EEPROM_REG, 0|EESK);
delay(1);
bus_space_write_1(iot, ioh, EEPROM_REG, 0);
bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0));
return readval;
}
/*
* Device timeout/watchdog routine. Entered if the device neglects to generate
* an interrupt after a transmit has been started on it.
*/
void
iywatchdog(ifp)
struct ifnet *ifp;
{
struct iy_softc *sc = ifp->if_softc;
log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname);
++sc->sc_ethercom.ec_if.if_oerrors;
iyreset(sc);
}
/*
* What to do upon receipt of an interrupt.
*/
int
iyintr(arg)
void *arg;
{
struct iy_softc *sc = arg;
bus_space_tag_t iot;
bus_space_handle_t ioh;
register u_short status;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
status = bus_space_read_1(iot, ioh, STATUS_REG);
#ifdef IYDEBUG
if (status & ALL_INTS) {
printf("%s: got interupt %b", sc->sc_dev.dv_xname, status,
"\020\1RX_STP\2RX\3TX\4EXEC");
if (status & EXEC_INT)
printf(" event %b\n", bus_space_read_1(iot, ioh, 0),
"\020\6ABORT");
else
printf("\n");
}
#endif
if (((status & (RX_INT | TX_INT)) == 0))
return 0;
if (status & RX_INT) {
iy_intr_rx(sc);
bus_space_write_1(iot, ioh, STATUS_REG, RX_INT);
} else if (status & TX_INT) {
iy_intr_tx(sc);
bus_space_write_1(iot, ioh, STATUS_REG, TX_INT);
}
#if NRND > 0
rnd_add_uint32(&sc->rnd_source, status);
#endif
return 1;
}
void
iyget(sc, iot, ioh, rxlen)
struct iy_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
int rxlen;
{
struct mbuf *m, *top, **mp;
struct ether_header *eh;
struct ifnet *ifp;
int len;
ifp = &sc->sc_ethercom.ec_if;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == 0)
goto dropped;
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = rxlen;
len = MHLEN;
top = 0;
mp = &top;
while (rxlen > 0) {
if (top) {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == 0) {
m_freem(top);
goto dropped;
}
len = MLEN;
}
if (rxlen >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_free(m);
m_freem(top);
goto dropped;
}
len = MCLBYTES;
}
len = min(rxlen, len);
if (len > 1) {
len &= ~1;
bus_space_read_multi_2(iot, ioh, MEM_PORT_REG,
mtod(m, caddr_t), len/2);
} else {
#ifdef IYDEBUG
printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname);
#endif
*(mtod(m, caddr_t)) = bus_space_read_2(iot, ioh,
MEM_PORT_REG);
}
m->m_len = len;
rxlen -= len;
*mp = m;
mp = &m->m_next;
}
/* XXX receive the top here */
++ifp->if_ipackets;
eh = mtod(top, struct ether_header *);
#if NBPFILTER > 0
if (ifp->if_bpf) {
bpf_mtap(ifp->if_bpf, top);
if ((ifp->if_flags & IFF_PROMISC) &&
(eh->ether_dhost[0] & 1) == 0 &&
bcmp(eh->ether_dhost,
LLADDR(sc->sc_ethercom.ec_if.if_sadl),
sizeof(eh->ether_dhost)) != 0) {
m_freem(top);
return;
}
}
#endif
m_adj(top, sizeof(struct ether_header));
ether_input(ifp, eh, top);
return;
dropped:
++ifp->if_ierrors;
return;
}
void
iy_intr_rx(sc)
struct iy_softc *sc;
{
struct ifnet *ifp;
bus_space_tag_t iot;
bus_space_handle_t ioh;
u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
ifp = &sc->sc_ethercom.ec_if;
rxadrs = sc->rx_start;
bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxadrs);
rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG);
rxnext = 0;
while (rxevnt == RCV_DONE) {
rxstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG);
rxnext = bus_space_read_2(iot, ioh, MEM_PORT_REG);
rxlen = bus_space_read_2(iot, ioh, MEM_PORT_REG);
#ifdef IYDEBUG
printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n",
sc->sc_dev.dv_xname, rxadrs, rxstatus,
"\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR"
"\014CRCERR\015LENERR\016RCVOK\020TYP",
rxnext, rxlen);
#endif
iyget(sc, iot, ioh, rxlen);
/* move stop address */
bus_space_write_2(iot, ioh, RCV_STOP_LOW,
rxnext == 0 ? sc->rx_size - 2 : rxnext - 2);
bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxnext);
rxadrs = rxnext;
rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG);
}
sc->rx_start = rxnext;
}
void
iy_intr_tx(sc)
struct iy_softc *sc;
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
struct ifnet *ifp;
u_int txstatus, txstat2, txlen, txnext;
ifp = &sc->sc_ethercom.ec_if;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
while (sc->tx_start != sc->tx_end) {
bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_start);
txstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG);
if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD))
break;
txstat2 = bus_space_read_2(iot, ioh, MEM_PORT_REG);
txnext = bus_space_read_2(iot, ioh, MEM_PORT_REG);
txlen = bus_space_read_2(iot, ioh, MEM_PORT_REG);
#ifdef IYDEBUG
printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n",
txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF"
"\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL",
txnext, txlen);
#endif
if (txlen & CHAIN)
sc->tx_start = txnext;
else
sc->tx_start = sc->tx_end;
ifp->if_flags &= ~IFF_OACTIVE;
if ((txstat2 & 0x2000) == 0)
++ifp->if_oerrors;
if (txstat2 & 0x000f)
ifp->if_oerrors += txstat2 & 0x000f;
}
ifp->if_flags &= ~IFF_OACTIVE;
}
#if 0
/*
* Compare two Ether/802 addresses for equality, inlined and unrolled for
* speed. I'd love to have an inline assembler version of this...
*/
static inline int
ether_equal(one, two)
u_char *one, *two;
{
if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] ||
one[3] != two[3] || one[4] != two[4] || one[5] != two[5])
return 0;
return 1;
}
/*
* Check for a valid address. to_bpf is filled in with one of the following:
* 0 -> BPF doesn't get this packet
* 1 -> BPF does get this packet
* 2 -> BPF does get this packet, but we don't
* Return value is true if the packet is for us, and false otherwise.
*
* This routine is a mess, but it's also critical that it be as fast
* as possible. It could be made cleaner if we can assume that the
* only client which will fiddle with IFF_PROMISC is BPF. This is
* probably a good assumption, but we do not make it here. (Yet.)
*/
static inline int
check_eh(sc, eh, to_bpf)
struct iy_softc *sc;
struct ether_header *eh;
int *to_bpf;
{
int i;
switch (sc->promisc) {
case IFF_ALLMULTI:
/*
* Receiving all multicasts, but no unicasts except those
* destined for us.
*/
#if NBPFILTER > 0
*to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */
#endif
if (eh->ether_dhost[0] & 1)
return 1;
if (ether_equal(eh->ether_dhost,
LLADDR(sc->sc_ethercom.ec_if.if_sadl)))
return 1;
return 0;
case IFF_PROMISC:
/*
* Receiving all packets. These need to be passed on to BPF.
*/
#if NBPFILTER > 0
*to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0);
#endif
/* If for us, accept and hand up to BPF */
if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl)))
return 1;
#if NBPFILTER > 0
if (*to_bpf)
*to_bpf = 2; /* we don't need to see it */
#endif
/*
* Not a multicast, so BPF wants to see it but we don't.
*/
if (!(eh->ether_dhost[0] & 1))
return 1;
/*
* If it's one of our multicast groups, accept it and pass it
* up.
*/
for (i = 0; i < sc->mcast_count; i++) {
if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) {
#if NBPFILTER > 0
if (*to_bpf)
*to_bpf = 1;
#endif
return 1;
}
}
return 1;
case IFF_ALLMULTI | IFF_PROMISC:
/*
* Acting as a multicast router, and BPF running at the same
* time. Whew! (Hope this is a fast machine...)
*/
#if NBPFILTER > 0
*to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0);
#endif
/* We want to see multicasts. */
if (eh->ether_dhost[0] & 1)
return 1;
/* We want to see our own packets */
if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl)))
return 1;
/* Anything else goes to BPF but nothing else. */
#if NBPFILTER > 0
if (*to_bpf)
*to_bpf = 2;
#endif
return 1;
case 0:
/*
* Only accept unicast packets destined for us, or multicasts
* for groups that we belong to. For now, we assume that the
* '586 will only return packets that we asked it for. This
* isn't strictly true (it uses hashing for the multicast
* filter), but it will do in this case, and we want to get out
* of here as quickly as possible.
*/
#if NBPFILTER > 0
*to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0);
#endif
return 1;
}
#ifdef DIAGNOSTIC
panic("check_eh: impossible");
#endif
}
#endif
int
iyioctl(ifp, cmd, data)
register struct ifnet *ifp;
u_long cmd;
caddr_t data;
{
struct iy_softc *sc;
struct ifaddr *ifa;
struct ifreq *ifr;
int s, error = 0;
sc = ifp->if_softc;
ifa = (struct ifaddr *)data;
ifr = (struct ifreq *)data;
#ifdef IYDEBUG
printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n",
ifp, ifp->if_xname, cmd, data);
#endif
s = splimp();
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
iyinit(sc);
arp_ifinit(ifp, ifa);
break;
#endif
#ifdef NS
/* XXX - This code is probably wrong. */
case AF_NS:
{
struct ns_addr *ina = &IA_SNS(ifa)->sns_addr;
if (ns_nullhost(*ina))
ina->x_host = *(union ns_host *)
LLADDR(sc->sc_ethercom.ec_if.if_sadl);
else
bcopy(ina->x_host.c_host,
LLADDR(sc->sc_ethercom.ec_if.if_sadl),
ETHER_ADDR_LEN);
/* Set new address. */
iyinit(sc);
break;
}
#endif /* NS */
default:
iyinit(sc);
break;
}
break;
case SIOCSIFFLAGS:
sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
if ((ifp->if_flags & IFF_UP) == 0 &&
(ifp->if_flags & IFF_RUNNING) != 0) {
/*
* If interface is marked down and it is running, then
* stop it.
*/
iystop(sc);
ifp->if_flags &= ~IFF_RUNNING;
} else if ((ifp->if_flags & IFF_UP) != 0 &&
(ifp->if_flags & IFF_RUNNING) == 0) {
/*
* If interface is marked up and it is stopped, then
* start it.
*/
iyinit(sc);
} else {
/*
* Reset the interface to pick up changes in any other
* flags that affect hardware registers.
*/
iystop(sc);
iyinit(sc);
}
#ifdef IYDEBUGX
if (ifp->if_flags & IFF_DEBUG)
sc->sc_debug = IFY_ALL;
else
sc->sc_debug = 0;
#endif
break;
#if 0 /* XXX */
case SIOCADDMULTI:
case SIOCDELMULTI:
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ethercom):
ether_delmulti(ifr, &sc->sc_ethercom);
if (error == ENETRESET) {
/*
* Multicast list has changed; set the hardware filter
* accordingly.
*/
iy_mc_reset(sc); /* XXX */
error = 0;
}
break;
#endif
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->iy_ifmedia, cmd);
break;
default:
error = EINVAL;
}
splx(s);
return error;
}
int
iy_mediachange(ifp)
struct ifnet *ifp;
{
struct iy_softc *sc = ifp->if_softc;
if (IFM_TYPE(sc->iy_ifmedia.ifm_media) != IFM_ETHER)
return EINVAL;
switch(IFM_SUBTYPE(sc->iy_ifmedia.ifm_media)) {
case IFM_10_5:
case IFM_10_2:
case IFM_10_T:
case IFM_AUTO:
iystop(sc);
iyinit(sc);
return 0;
default:
return EINVAL;
}
}
void
iy_mediastatus(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct iy_softc *sc = ifp->if_softc;
ifmr->ifm_active = sc->iy_media;
ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE;
}
#if 0
static void
iy_mc_reset(sc)
struct iy_softc *sc;
{
struct ether_multi *enm;
struct ether_multistep step;
/*
* Step through the list of addresses.
*/
sc->mcast_count = 0;
ETHER_FIRST_MULTI(step, &sc->sc_ethercom, enm);
while (enm) {
if (sc->mcast_count >= MAXMCAST ||
bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) {
sc->sc_ethercom.ec_if.if_flags |= IFF_ALLMULTI;
iyioctl(&sc->sc_ethercom.ec_if, SIOCSIFFLAGS,
(void *)0);
goto setflag;
}
bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6);
sc->mcast_count++;
ETHER_NEXT_MULTI(step, enm);
}
setflag:
sc->want_mcsetup = 1;
}
#ifdef IYDEBUG
void
print_rbd(rbd)
volatile struct ie_recv_buf_desc *rbd;
{
printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n"
"length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual,
rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length,
rbd->mbz);
}
#endif
#endif
void
iyprobemem(sc)
struct iy_softc *sc;
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
int testing;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0));
delay(1);
bus_space_write_2(iot, ioh, HOST_ADDR_REG, 4096-2);
bus_space_write_2(iot, ioh, MEM_PORT_REG, 0);
for (testing=65536; testing >= 4096; testing >>= 1) {
bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2);
bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xdead);
bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2);
if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xdead) {
#ifdef IYMEMDEBUG
printf("%s: Didn't keep 0xdead at 0x%x\n",
sc->sc_dev.dv_xname, testing-2);
#endif
continue;
}
bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2);
bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xbeef);
bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2);
if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xbeef) {
#ifdef IYMEMDEBUG
printf("%s: Didn't keep 0xbeef at 0x%x\n",
sc->sc_dev.dv_xname, testing-2);
#endif
continue;
}
bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0);
bus_space_write_2(iot, ioh, MEM_PORT_REG, 0);
bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing >> 1);
bus_space_write_2(iot, ioh, MEM_PORT_REG, testing >> 1);
bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0);
if (bus_space_read_2(iot, ioh, MEM_PORT_REG) == (testing >> 1)) {
#ifdef IYMEMDEBUG
printf("%s: 0x%x alias of 0x0\n",
sc->sc_dev.dv_xname, testing >> 1);
#endif
continue;
}
break;
}
sc->sram = testing;
switch(testing) {
case 65536:
/* 4 NFS packets + overhead RX, 2 NFS + overhead TX */
sc->rx_size = 44*1024;
break;
case 32768:
/* 2 NFS packets + overhead RX, 1 NFS + overhead TX */
sc->rx_size = 22*1024;
break;
case 16384:
/* 1 NFS packet + overhead RX, 4 big packets TX */
sc->rx_size = 10*1024;
break;
default:
sc->rx_size = testing/2;
break;
}
sc->tx_size = testing - sc->rx_size;
}
static int
eepromreadall(iot, ioh, wordp, maxi)
bus_space_tag_t iot;
bus_space_handle_t ioh;
u_int16_t *wordp;
int maxi;
{
int i;
u_int16_t checksum, tmp;
checksum = 0;
for (i=0; i<EEPP_LENGTH; ++i) {
tmp = eepromread(iot, ioh, i);
checksum += tmp;
if (i<maxi)
wordp[i] = tmp;
}
if (checksum != EEPP_CHKSUM) {
#ifdef IYDEBUG
printf("wrong EEPROM checksum 0x%x should be 0x%x\n",
checksum, EEPP_CHKSUM);
#endif
return 1;
}
return 0;
}
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