NetBSD/sys/arch/sun3/dev/if_ie_subr.c

366 lines
8.3 KiB
C

/* $NetBSD: if_ie_subr.c,v 1.6 1995/02/13 22:23:55 gwr Exp $ */
/*
* Copyright (c) 1994 Gordon W. Ross
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Gordon Ross
* 4. The name 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.
*/
/*
* Machine-dependent glue for the Intel Ethernet (ie) driver.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <net/if.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
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <machine/isr.h>
#include <machine/obio.h>
#include <machine/idprom.h>
#include <machine/vmparam.h>
#include "i82586.h"
#include "if_ie.h"
#include "if_ie_subr.h"
static void ie_obreset __P((struct ie_softc *));
static void ie_obattend __P((struct ie_softc *));
static void ie_obrun __P((struct ie_softc *));
static void ie_vmereset __P((struct ie_softc *));
static void ie_vmeattend __P((struct ie_softc *));
static void ie_vmerun __P((struct ie_softc *));
/*
* zero/copy functions: OBIO can use the normal functions, but VME
* must do only byte or half-word (16 bit) accesses...
*/
static void wcopy(), wzero();
int
ie_md_match(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct cfdata *cf = vcf;
struct confargs *ca = args;
int x, sz;
switch (ca->ca_bustype) {
case BUS_OBIO:
if (ca->ca_paddr == -1)
ca->ca_paddr = OBIO_INTEL_ETHER;
sz = 1;
break;
case BUS_VME16:
/* No default VME address. */
if (ca->ca_paddr == -1)
return(0);
sz = 2;
break;
default:
return (0);
}
/* Default interrupt level. */
if (ca->ca_intpri == -1)
ca->ca_intpri = 3;
x = bus_peek(ca->ca_bustype, ca->ca_paddr, sz);
return (x != -1);
}
void
ie_md_attach(parent, self, args)
struct device *parent;
struct device *self;
void *args;
{
struct ie_softc *sc = (void *) self;
struct confargs *ca = args;
caddr_t mem, reg, dvma_malloc();
/*
* *note*: we don't detect the difference between a VME3E and
* a multibus/vme card. if you want to use a 3E you'll have
* to fix this.
*/
switch (ca->ca_bustype) {
case BUS_OBIO:
sc->hard_type = IE_OBIO;
sc->reset_586 = ie_obreset;
sc->chan_attn = ie_obattend;
sc->run_586 = ie_obrun;
sc->sc_bcopy = bcopy;
sc->sc_bzero = bzero;
sc->sc_iobase = (caddr_t)DVMA_SLAVE_BASE;
sc->sc_msize = MEMSIZE;
/* Map in the control register. */
reg = obio_alloc(ca->ca_paddr, OBIO_INTEL_ETHER_SIZE);
if (reg == NULL)
panic(": not enough obio space\n");
sc->sc_reg = reg;
/* Allocate "shared" memory (DVMA space). */
mem = dvma_malloc(sc->sc_msize);
if (mem == NULL)
panic(": not enough dvma space");
sc->sc_maddr = mem;
/* This is a FIXED address, in a page left by the PROM. */
sc->scp = (volatile struct ie_sys_conf_ptr *)
(sc->sc_iobase + IE_SCP_ADDR);
/* Install interrupt handler. */
isr_add_autovect(ie_intr, (void *)sc, ca->ca_intpri);
break;
case BUS_VME16: {
volatile struct ievme *iev;
u_long rampaddr;
int lcv;
sc->hard_type = IE_VME;
sc->reset_586 = ie_vmereset;
sc->chan_attn = ie_vmeattend;
sc->run_586 = ie_vmerun;
sc->sc_bcopy = wcopy;
sc->sc_bzero = wzero;
sc->sc_msize = MEMSIZE;
sc->sc_reg = bus_mapin(ca->ca_bustype, ca->ca_paddr,
sizeof(struct ievme));
iev = (volatile struct ievme *) sc->sc_reg;
/* top 12 bits */
rampaddr = ca->ca_paddr & 0xfff00000;
/* 4 more */
rampaddr |= ((iev->status & IEVME_HADDR) << 16);
sc->sc_maddr = bus_mapin(ca->ca_bustype, rampaddr, sc->sc_msize);
sc->sc_iobase = sc->sc_maddr;
iev->pectrl = iev->pectrl | IEVME_PARACK; /* clear to start */
sc->scp = (volatile struct ie_sys_conf_ptr *)
(sc->sc_iobase + (IE_SCP_ADDR & (IEVME_PAGESIZE - 1)));
/*
* set up mappings, direct map except for last page
* which is mapped at zero and at high address (for
* scp), zero ram
*/
for (lcv = 0; lcv < IEVME_MAPSZ - 1; lcv++)
iev->pgmap[lcv] = IEVME_SBORDR | IEVME_OBMEM | lcv;
iev->pgmap[IEVME_MAPSZ - 1] = IEVME_SBORDR | IEVME_OBMEM | 0;
(sc->sc_bzero)(sc->sc_maddr, sc->sc_msize);
isr_add_vectored(ie_intr, (void *)sc,
ca->ca_intpri,
ca->ca_intvec);
break;
}
default:
printf("unknown\n");
return;
}
/*
* set up pointers to data structures and buffer area.
*/
sc->iscp = (volatile struct ie_int_sys_conf_ptr *)
sc->sc_maddr;
sc->scb = (volatile struct ie_sys_ctl_block *)
sc->sc_maddr + sizeof(struct ie_int_sys_conf_ptr);
/*
* rest of first page is unused, rest of ram
* for buffers
*/
sc->buf_area = sc->sc_maddr + IEVME_PAGESIZE;
sc->buf_area_sz = sc->sc_msize - IEVME_PAGESIZE;
idprom_etheraddr(sc->sc_addr); /* ethernet addr */
}
/*
* MULTIBUS/VME support
*/
void
ie_vmereset(sc)
struct ie_softc *sc;
{
volatile struct ievme *iev = (struct ievme *) sc->sc_reg;
iev->status = IEVME_RESET;
delay(100); /* XXX could be shorter? */
iev->status = 0;
}
void
ie_vmeattend(sc)
struct ie_softc *sc;
{
volatile struct ievme *iev = (struct ievme *) sc->sc_reg;
iev->status |= IEVME_ATTEN; /* flag! */
iev->status &= ~IEVME_ATTEN; /* down. */
}
void
ie_vmerun(sc)
struct ie_softc *sc;
{
volatile struct ievme *iev = (struct ievme *) sc->sc_reg;
iev->status |= (IEVME_ONAIR | IEVME_IENAB | IEVME_PEINT);
}
/*
* onboard ie support
*/
void
ie_obreset(sc)
struct ie_softc *sc;
{
volatile struct ieob *ieo = (struct ieob *) sc->sc_reg;
ieo->obctrl = 0;
delay(100); /* XXX could be shorter? */
ieo->obctrl = IEOB_NORSET;
}
void
ie_obattend(sc)
struct ie_softc *sc;
{
volatile struct ieob *ieo = (struct ieob *) sc->sc_reg;
ieo->obctrl |= IEOB_ATTEN; /* flag! */
ieo->obctrl &= ~IEOB_ATTEN; /* down. */
}
void
ie_obrun(sc)
struct ie_softc *sc;
{
volatile struct ieob *ieo = (struct ieob *) sc->sc_reg;
ieo->obctrl |= (IEOB_ONAIR|IEOB_IENAB|IEOB_NORSET);
}
/*
* wcopy/wzero - like bcopy/bzero but largest access is 16-bits,
* and also does byte swaps...
* XXX - Would be nice to have asm versions in some library...
*/
static void
wzero(vb, l)
void *vb;
u_int l;
{
u_char *b = vb;
u_char *be = b + l;
u_short *sp;
if (l == 0)
return;
/* front, */
if ((u_long)b & 1)
*b++ = 0;
/* back, */
if (b != be && ((u_long)be & 1) != 0) {
be--;
*be = 0;
}
/* and middle. */
sp = (u_short *)b;
while (sp != (u_short *)be)
*sp++ = 0;
}
static void
wcopy(vb1, vb2, l)
const void *vb1;
void *vb2;
u_int l;
{
const u_char *b1e, *b1 = vb1;
u_char *b2 = vb2;
u_short *sp;
int bstore = 0;
if (l == 0)
return;
/* front, */
if ((u_long)b1 & 1) {
*b2++ = *b1++;
l--;
}
/* middle, */
sp = (u_short *)b1;
b1e = b1 + l;
if (l & 1)
b1e--;
bstore = (u_long)b2 & 1;
while (sp < (u_short *)b1e) {
if (bstore) {
b2[1] = *sp & 0xff;
b2[0] = *sp >> 8;
} else
*((short *)b2) = *sp;
sp++;
b2 += 2;
}
/* and back. */
if (l & 1)
*b2 = *b1e;
}