NetBSD/sys/arch/pmax/tc/if_le.c

456 lines
12 KiB
C

/* $NetBSD: if_le.c,v 1.13 1996/05/07 01:23:31 thorpej Exp $ */
/*-
* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if_le.c 8.2 (Berkeley) 11/16/93
*/
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <net/if.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <machine/autoconf.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
#include <dev/tc/tcvar.h>
#include <dev/tc/ioasicvar.h>
#include <dev/tc/if_levar.h>
#ifdef pmax
#define wbflush() MachEmptyWriteBuffer()
/* This should be in a header file, but where? */
extern struct cfdriver mainbus_cd; /* XXX really 3100/5100 b'board */
#include <pmax/pmax/kn01.h>
#include <machine/machConst.h>
#include <pmax/pmax/asic.h>
#else /* Alpha */
#include <machine/rpb.h>
#endif /* Alpha */
/* access LANCE registers */
void lewritereg();
#define LERDWR(cntl, src, dst) { (dst) = (src); wbflush(); }
#define LEWREG(src, dst) lewritereg(&(dst), (src))
#define LE_OFFSET_RAM 0x0
#define LE_OFFSET_LANCE 0x100000
#define LE_OFFSET_ROM 0x1c0000
extern caddr_t le_iomem;
int le_pmax_match __P((struct device *, void *, void *));
void le_pmax_attach __P((struct device *, struct device *, void *));
hide void le_pmax_copytobuf_gap2 __P((struct am7990_softc *, void *,
int, int));
hide void le_pmax_copyfrombuf_gap2 __P((struct am7990_softc *, void *,
int, int));
hide void le_pmax_copytobuf_gap16 __P((struct am7990_softc *, void *,
int, int));
hide void le_pmax_copyfrombuf_gap16 __P((struct am7990_softc *, void *,
int, int));
hide void le_pmax_zerobuf_gap16 __P((struct am7990_softc *, int, int));
struct cfattach le_pmax_ca = {
sizeof(struct le_softc), le_pmax_match, le_pmax_attach
};
hide void le_pmax_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t));
hide u_int16_t le_pmax_rdcsr __P((struct am7990_softc *, u_int16_t));
hide void
le_pmax_wrcsr(sc, port, val)
struct am7990_softc *sc;
u_int16_t port, val;
{
struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
LEWREG(port, ler1->ler1_rap);
LERDWR(port, val, ler1->ler1_rdp);
}
hide u_int16_t
le_pmax_rdcsr(sc, port)
struct am7990_softc *sc;
u_int16_t port;
{
struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
u_int16_t val;
LEWREG(port, ler1->ler1_rap);
LERDWR(0, ler1->ler1_rdp, val);
return (val);
}
int
le_pmax_match(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct cfdata *cf = match;
struct confargs *ca = aux;
#ifdef notdef /* XXX */
struct tc_cfloc *tc_locp;
struct asic_cfloc *asic_locp;
#endif
#ifdef notdef /* XXX */
tclocp = (struct tc_cfloc *)cf->cf_loc;
#endif
/* XXX CHECK BUS */
/* make sure that we're looking for this type of device. */
if (!TC_BUS_MATCHNAME(ca, "PMAD-BA ") && /* untested alpha TC option */
!TC_BUS_MATCHNAME(ca, "PMAD-AA ") && /* KN02 b'board, old option */
!TC_BUS_MATCHNAME(ca, "lance")) /* NetBSD name for b'board */
return (0);
#ifdef notdef /* XXX */
/* make sure the unit matches the cfdata */
if ((cf->cf_unit != tap->ta_unit &&
tap->ta_unit != TA_ANYUNIT) ||
(tclocp->cf_slot != tap->ta_slot &&
tclocp->cf_slot != TC_SLOT_WILD) ||
(tclocp->cf_offset != tap->ta_offset &&
tclocp->cf_offset != TC_OFFSET_WILD))
return (0);
#endif
return (1);
}
void
le_pmax_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
register struct le_softc *lesc = (void *)self;
register struct am7990_softc *sc = &lesc->sc_am7990;
struct confargs *ca = aux;
u_char *cp; /* pointer to MAC address */
int i;
if (parent->dv_cfdata->cf_driver == &ioasic_cd) {
/* It's on the system IOCTL ASIC */
volatile u_int *ldp;
tc_addr_t dma_mask;
lesc->sc_r1 = (struct lereg1 *)
MACH_PHYS_TO_UNCACHED(ca->ca_addr);
#ifdef alpha
lesc->sc_r1 = TC_DENSE_TO_SPARSE(sc->sc_r1);
#endif
sc->sc_mem = (void *)MACH_PHYS_TO_UNCACHED(le_iomem);
/* XXX */ cp = (u_char *)IOASIC_SYS_ETHER_ADDRESS(ioasic_base);
sc->sc_copytodesc = le_pmax_copytobuf_gap2;
sc->sc_copyfromdesc = le_pmax_copyfrombuf_gap2;
sc->sc_copytobuf = le_pmax_copytobuf_gap16;
sc->sc_copyfrombuf = le_pmax_copyfrombuf_gap16;
sc->sc_zerobuf = le_pmax_zerobuf_gap16;
/*
* And enable Lance dma through the asic.
*/
ldp = (volatile u_int *) (IOASIC_REG_LANCE_DMAPTR(ioasic_base));
dma_mask = ((tc_addr_t)le_iomem << 3);
#ifdef alpha
/* Set upper 64 bits of DMA mask */
dma_mask = (dma_mask & ~(tc_addr_t)0x1f) |
(((tc_addr_t)le_iomem >> 29) & 0x1f);
#endif /*alpha*/
*ldp = dma_mask;
*(volatile u_int *)IOASIC_REG_CSR(ioasic_base) |=
IOASIC_CSR_DMAEN_LANCE;
wbflush();
}
else
if (parent->dv_cfdata->cf_driver == &tc_cd) {
/* It's on the turbochannel proper, or on KN02 baseboard. */
lesc->sc_r1 = (struct lereg1 *)
(ca->ca_addr + LE_OFFSET_LANCE);
sc->sc_mem = (void *)
(ca->ca_addr + LE_OFFSET_RAM);
cp = (u_char *)(ca->ca_addr + LE_OFFSET_ROM + 2);
sc->sc_copytodesc = am7990_copytobuf_contig;
sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
sc->sc_copytobuf = am7990_copytobuf_contig;
sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
sc->sc_zerobuf = am7990_zerobuf_contig;
}
#ifdef pmax
else if (parent->dv_cfdata->cf_driver == &mainbus_cd) {
/* It's on the baseboard, attached directly to mainbus. */
lesc->sc_r1 = (struct lereg1 *)(ca->ca_addr);
/*XXX*/ sc->sc_mem = (void *)MACH_PHYS_TO_UNCACHED(0x19000000);
/*XXX*/ cp = (u_char *)(MACH_PHYS_TO_UNCACHED(KN01_SYS_CLOCK) + 1);
sc->sc_copytodesc = le_pmax_copytobuf_gap2;
sc->sc_copyfromdesc = le_pmax_copyfrombuf_gap2;
sc->sc_copytobuf = le_pmax_copytobuf_gap2;
sc->sc_copyfrombuf = le_pmax_copyfrombuf_gap2;
sc->sc_zerobuf = le_pmax_zerobuf_gap2;
}
#endif
sc->sc_rdcsr = le_pmax_rdcsr;
sc->sc_wrcsr = le_pmax_wrcsr;
sc->sc_hwinit = NULL;
sc->sc_conf3 = 0;
sc->sc_addr = 0;
sc->sc_memsize = 65536;
/*
* Get the ethernet address out of rom
*/
for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) {
sc->sc_arpcom.ac_enaddr[i] = *cp;
cp += 4;
}
am7990_config(sc);
BUS_INTR_ESTABLISH(ca, am7990_intr, sc);
if (parent->dv_cfdata->cf_driver == &ioasic_cd) {
/* XXX YEECH!!! */
*(volatile u_int *)IOASIC_REG_IMSK(ioasic_base) |=
IOASIC_INTR_LANCE;
wbflush();
}
}
/*
* Write a lance register port, reading it back to ensure success. This seems
* to be necessary during initialization, since the chip appears to be a bit
* pokey sometimes.
*/
void
lewritereg(regptr, val)
register volatile u_short *regptr;
register u_short val;
{
register int i = 0;
while (*regptr != val) {
*regptr = val;
wbflush();
if (++i > 10000) {
printf("le: Reg did not settle (to x%x): x%x\n", val,
*regptr);
return;
}
DELAY(100);
}
}
/*
* Routines for accessing the transmit and receive buffers are provided
* by am7990.c, because of the LE_NEED_BUF_* macros defined above.
* Unfortunately, CPU addressing of these buffers is done in one of
* 3 ways:
* - contiguous (for the 3max and turbochannel option card)
* - gap2, which means shorts (2 bytes) interspersed with short (2 byte)
* spaces (for the pmax)
* - gap16, which means 16bytes interspersed with 16byte spaces
* for buffers which must begin on a 32byte boundary (for 3min and maxine)
* The buffer offset is the logical byte offset, assuming contiguous storage.
*/
/*
* gap2: two bytes of data followed by two bytes of pad.
*
* Buffers must be 4-byte aligned. The code doesn't worry about
* doing an extra byte.
*/
void
le_pmax_copytobuf_gap2(sc, fromv, boff, len)
struct am7990_softc *sc;
void *fromv;
int boff;
register int len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t from = fromv;
register volatile u_int16_t *bptr;
if (boff & 0x1) {
/* handle unaligned first byte */
bptr = ((volatile u_int16_t *)buf) + (boff - 1);
*bptr = (*from++ << 8) | (*bptr & 0xff);
bptr += 2;
len--;
} else
bptr = ((volatile u_int16_t *)buf) + boff;
while (len > 1) {
*bptr = (from[1] << 8) | (from[0] & 0xff);
bptr += 2;
from += 2;
len -= 2;
}
if (len == 1)
*bptr = (u_int16_t)*from;
}
void
le_pmax_copyfrombuf_gap2(sc, tov, boff, len)
struct am7990_softc *sc;
void *tov;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t to = tov;
register volatile u_int16_t *bptr;
register u_int16_t tmp;
if (boff & 0x1) {
/* handle unaligned first byte */
bptr = ((volatile u_int16_t *)buf) + (boff - 1);
*to++ = (*bptr >> 8) & 0xff;
bptr += 2;
len--;
} else
bptr = ((volatile u_int16_t *)buf) + boff;
while (len > 1) {
tmp = *bptr;
*to++ = tmp & 0xff;
*to++ = (tmp >> 8) & 0xff;
bptr += 2;
len -= 2;
}
if (len == 1)
*to = *bptr & 0xff;
}
/*
* gap16: 16 bytes of data followed by 16 bytes of pad.
*
* Buffers must be 32-byte aligned.
*/
void
le_pmax_copytobuf_gap16(sc, fromv, boff, len)
struct am7990_softc *sc;
void *fromv;
int boff;
register int len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t from = fromv;
register caddr_t bptr;
register int xfer;
bptr = buf + ((boff << 1) & ~0x1f);
boff &= 0xf;
xfer = min(len, 16 - boff);
while (len > 0) {
bcopy(from, bptr + boff, xfer);
from += xfer;
bptr += 32;
boff = 0;
len -= xfer;
xfer = min(len, 16);
}
}
void
le_pmax_copyfrombuf_gap16(sc, tov, boff, len)
struct am7990_softc *sc;
void *tov;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t to = tov;
register caddr_t bptr;
register int xfer;
bptr = buf + ((boff << 1) & ~0x1f);
boff &= 0xf;
xfer = min(len, 16 - boff);
while (len > 0) {
bcopy(bptr + boff, to, xfer);
to += xfer;
bptr += 32;
boff = 0;
len -= xfer;
xfer = min(len, 16);
}
}
void
le_pmax_zerobuf_gap16(sc, boff, len)
struct am7990_softc *sc;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t bptr;
register int xfer;
bptr = buf + ((boff << 1) & ~0x1f);
boff &= 0xf;
xfer = min(len, 16 - boff);
while (len > 0) {
bzero(bptr + boff, xfer);
bptr += 32;
boff = 0;
len -= xfer;
xfer = min(len, 16);
}
}