241 lines
6.2 KiB
C
241 lines
6.2 KiB
C
/* $NetBSD: if_cs_isa.c,v 1.2 1998/07/27 18:27:36 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright 1997
|
|
* Digital Equipment Corporation. All rights reserved.
|
|
*
|
|
* This software is furnished under license and may be used and
|
|
* copied only in accordance with the following terms and conditions.
|
|
* Subject to these conditions, you may download, copy, install,
|
|
* use, modify and distribute this software in source and/or binary
|
|
* form. No title or ownership is transferred hereby.
|
|
*
|
|
* 1) Any source code used, modified or distributed must reproduce
|
|
* and retain this copyright notice and list of conditions as
|
|
* they appear in the source file.
|
|
*
|
|
* 2) No right is granted to use any trade name, trademark, or logo of
|
|
* Digital Equipment Corporation. Neither the "Digital Equipment
|
|
* Corporation" name nor any trademark or logo of Digital Equipment
|
|
* Corporation may be used to endorse or promote products derived
|
|
* from this software without the prior written permission of
|
|
* Digital Equipment Corporation.
|
|
*
|
|
* 3) This software is provided "AS-IS" and any express or implied
|
|
* warranties, including but not limited to, any implied warranties
|
|
* of merchantability, fitness for a particular purpose, or
|
|
* non-infringement are disclaimed. In no event shall DIGITAL be
|
|
* liable for any damages whatsoever, and in particular, DIGITAL
|
|
* shall not be liable for special, indirect, consequential, or
|
|
* incidental damages or damages for lost profits, loss of
|
|
* revenue or loss of use, whether such damages arise in contract,
|
|
* negligence, tort, under statute, in equity, at law or otherwise,
|
|
* even if advised of the possibility of such damage.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_ether.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
|
|
#include <dev/isa/isareg.h>
|
|
#include <dev/isa/isavar.h>
|
|
#include <dev/isa/isadmavar.h>
|
|
|
|
#include <dev/isa/cs89x0reg.h>
|
|
#include <dev/isa/cs89x0var.h>
|
|
|
|
int cs_isa_probe __P((struct device *, struct cfdata *, void *));
|
|
void cs_isa_attach __P((struct device *, struct device *, void *));
|
|
|
|
struct cfattach cs_isa_ca = {
|
|
sizeof(struct cs_softc), cs_isa_probe, cs_isa_attach
|
|
};
|
|
|
|
int
|
|
cs_isa_probe(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
struct isa_attach_args *ia = aux;
|
|
bus_space_tag_t iot = ia->ia_iot;
|
|
bus_space_tag_t memt = ia->ia_memt;
|
|
bus_space_handle_t ioh, memh;
|
|
int rv = 0, have_io = 0, have_mem = 0;
|
|
u_int16_t isa_cfg, isa_membase;
|
|
bus_addr_t maddr = ia->ia_maddr;
|
|
int irq = ia->ia_irq;
|
|
|
|
/*
|
|
* Disallow wildcarded I/O base.
|
|
*/
|
|
if (ia->ia_iobase == ISACF_PORT_DEFAULT)
|
|
return (0);
|
|
|
|
/*
|
|
* Map the I/O space.
|
|
*/
|
|
if (bus_space_map(ia->ia_iot, ia->ia_iobase, CS8900_IOSIZE, 0, &ioh))
|
|
goto out;
|
|
have_io = 1;
|
|
|
|
/* Verify that it's a Crystal product. */
|
|
if (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_EISA_NUM) !=
|
|
EISA_NUM_CRYSTAL)
|
|
goto out;
|
|
|
|
/*
|
|
* Verify that it's a supported chip.
|
|
*/
|
|
switch (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_PRODUCT_ID) &
|
|
PROD_ID_MASK) {
|
|
case PROD_ID_CS8900:
|
|
#ifdef notyet
|
|
case PROD_ID_CS8920:
|
|
case PROD_ID_CS8920M:
|
|
#endif
|
|
rv = 1;
|
|
}
|
|
|
|
/*
|
|
* If the IRQ or memory address were not specified, read the
|
|
* ISA_CFG EEPROM location.
|
|
*/
|
|
if (maddr == ISACF_IOMEM_DEFAULT || irq == ISACF_IRQ_DEFAULT) {
|
|
if (cs_verify_eeprom(iot, ioh) == CS_ERROR) {
|
|
printf("cs_isa_probe: EEPROM bad or missing\n");
|
|
goto out;
|
|
}
|
|
if (cs_read_eeprom(iot, ioh, EEPROM_ISA_CFG, &isa_cfg)
|
|
== CS_ERROR) {
|
|
printf("cs_isa_probe: unable to read ISA_CFG\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the IRQ wasn't specified, get it from the EEPROM.
|
|
*/
|
|
if (irq == ISACF_IRQ_DEFAULT) {
|
|
irq = isa_cfg & ISA_CFG_IRQ_MASK;
|
|
if (irq == 3)
|
|
irq = 5;
|
|
else
|
|
irq += 10;
|
|
}
|
|
|
|
/*
|
|
* If the memory address wasn't specified, get it from the EEPROM.
|
|
*/
|
|
if (maddr == ISACF_IOMEM_DEFAULT) {
|
|
if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) {
|
|
/* EEPROM says don't use memory mode. */
|
|
goto out;
|
|
}
|
|
if (cs_read_eeprom(iot, ioh, EEPROM_MEM_BASE, &isa_membase)
|
|
== CS_ERROR) {
|
|
printf("cs_isa_probe: unable to read MEM_BASE\n");
|
|
goto out;
|
|
}
|
|
|
|
isa_membase &= MEM_BASE_MASK;
|
|
maddr = (int)isa_membase << 8;
|
|
}
|
|
|
|
/*
|
|
* We now have a valid mem address; attempt to map it.
|
|
*/
|
|
if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) {
|
|
/* Can't map it; fall back on i/o-only mode. */
|
|
printf("cs_isa_probe: unable to map memory space\n");
|
|
maddr = ISACF_IOMEM_DEFAULT;
|
|
} else
|
|
have_mem = 1;
|
|
|
|
out:
|
|
if (have_io)
|
|
bus_space_unmap(iot, ioh, CS8900_IOSIZE);
|
|
if (have_mem)
|
|
bus_space_unmap(memt, memh, CS8900_MEMSIZE);
|
|
|
|
if (rv) {
|
|
ia->ia_iosize = CS8900_IOSIZE;
|
|
ia->ia_maddr = maddr;
|
|
ia->ia_irq = irq;
|
|
if (ia->ia_maddr != ISACF_IOMEM_DEFAULT)
|
|
ia->ia_msize = CS8900_MEMSIZE;
|
|
}
|
|
return (rv);
|
|
}
|
|
|
|
void
|
|
cs_isa_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct cs_softc *sc = (struct cs_softc *) self;
|
|
struct isa_attach_args *ia = aux;
|
|
|
|
sc->sc_ic = ia->ia_ic;
|
|
sc->sc_iot = ia->ia_iot;
|
|
sc->sc_memt = ia->ia_memt;
|
|
|
|
sc->sc_drq = ia->ia_drq;
|
|
sc->sc_irq = ia->ia_irq;
|
|
|
|
printf("\n");
|
|
|
|
/*
|
|
* Map the device.
|
|
*/
|
|
if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize,
|
|
0, &sc->sc_ioh)) {
|
|
printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Validate IRQ.
|
|
*/
|
|
if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) {
|
|
printf("%s: invalid IRQ %d\n", sc->sc_dev.dv_xname, sc->sc_irq);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Map the memory space if it was specified. If we can do this,
|
|
* we set ourselves up to use memory mode forever. Otherwise,
|
|
* we fall back on I/O mode.
|
|
*/
|
|
if (ia->ia_maddr != ISACF_IOMEM_DEFAULT &&
|
|
ia->ia_msize == CS8900_MEMSIZE &&
|
|
CS8900_MEMBASE_ISVALID(ia->ia_maddr)) {
|
|
if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize,
|
|
0, &sc->sc_memh)) {
|
|
printf("%s: unable to map memory space\n",
|
|
sc->sc_dev.dv_xname);
|
|
} else {
|
|
sc->sc_cfgflags |= CFGFLG_MEM_MODE;
|
|
sc->sc_pktpgaddr = ia->ia_maddr;
|
|
}
|
|
}
|
|
|
|
sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE,
|
|
IPL_NET, cs_intr, sc);
|
|
if (sc->sc_ih == NULL) {
|
|
printf("%s: unable to establish interrupt\n",
|
|
sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
|
|
cs_attach(sc, NULL, NULL, 0, 0);
|
|
}
|