286 lines
7.2 KiB
C
286 lines
7.2 KiB
C
/* $NetBSD: if_cs_isa.c,v 1.7 2002/05/21 02:47:04 augustss Exp $ */
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/*
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* Copyright 1997
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* Digital Equipment Corporation. All rights reserved.
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*
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* This software is furnished under license and may be used and
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* copied only in accordance with the following terms and conditions.
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* Subject to these conditions, you may download, copy, install,
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* use, modify and distribute this software in source and/or binary
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* form. No title or ownership is transferred hereby.
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*
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* 1) Any source code used, modified or distributed must reproduce
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* and retain this copyright notice and list of conditions as
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* they appear in the source file.
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*
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* 2) No right is granted to use any trade name, trademark, or logo of
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* Digital Equipment Corporation. Neither the "Digital Equipment
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* Corporation" name nor any trademark or logo of Digital Equipment
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* Corporation may be used to endorse or promote products derived
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* from this software without the prior written permission of
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* Digital Equipment Corporation.
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*
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* 3) This software is provided "AS-IS" and any express or implied
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* warranties, including but not limited to, any implied warranties
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* of merchantability, fitness for a particular purpose, or
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* non-infringement are disclaimed. In no event shall DIGITAL be
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* liable for any damages whatsoever, and in particular, DIGITAL
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* shall not be liable for special, indirect, consequential, or
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* incidental damages or damages for lost profits, loss of
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* revenue or loss of use, whether such damages arise in contract,
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* negligence, tort, under statute, in equity, at law or otherwise,
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* even if advised of the possibility of such damage.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_cs_isa.c,v 1.7 2002/05/21 02:47:04 augustss Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include "rnd.h"
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#if NRND > 0
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#include <sys/rnd.h>
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#endif
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/ic/cs89x0reg.h>
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#include <dev/ic/cs89x0var.h>
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#include <dev/isa/cs89x0isavar.h>
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int cs_isa_probe __P((struct device *, struct cfdata *, void *));
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void cs_isa_attach __P((struct device *, struct device *, void *));
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struct cfattach cs_isa_ca = {
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sizeof(struct cs_softc_isa), cs_isa_probe, cs_isa_attach
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};
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int
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cs_isa_probe(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_tag_t memt = ia->ia_memt;
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bus_space_handle_t ioh, memh;
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struct cs_softc sc;
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int rv = 0, have_io = 0, have_mem = 0;
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u_int16_t isa_cfg, isa_membase;
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int maddr, irq;
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if (ia->ia_nio < 1)
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return (0);
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if (ia->ia_nirq < 1)
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return (0);
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if (ISA_DIRECT_CONFIG(ia))
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return (0);
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/*
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* Disallow wildcarded I/O base.
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*/
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if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT)
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return (0);
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if (ia->ia_niomem > 0)
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maddr = ia->ia_iomem[0].ir_addr;
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else
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maddr = ISACF_IOMEM_DEFAULT;
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/*
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* Map the I/O space.
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*/
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if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE,
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0, &ioh))
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goto out;
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have_io = 1;
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memset(&sc, 0, sizeof sc);
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sc.sc_iot = iot;
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sc.sc_ioh = ioh;
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/* Verify that it's a Crystal product. */
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if (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_EISA_NUM) !=
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EISA_NUM_CRYSTAL)
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goto out;
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/*
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* Verify that it's a supported chip.
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*/
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switch (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_PRODUCT_ID) &
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PROD_ID_MASK) {
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case PROD_ID_CS8900:
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#ifdef notyet
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case PROD_ID_CS8920:
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case PROD_ID_CS8920M:
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#endif
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rv = 1;
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}
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/*
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* If the IRQ or memory address were not specified, read the
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* ISA_CFG EEPROM location.
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*/
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if (maddr == ISACF_IOMEM_DEFAULT ||
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ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) {
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if (cs_verify_eeprom(&sc) == CS_ERROR) {
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printf("cs_isa_probe: EEPROM bad or missing\n");
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goto out;
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}
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if (cs_read_eeprom(&sc, EEPROM_ISA_CFG, &isa_cfg)
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== CS_ERROR) {
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printf("cs_isa_probe: unable to read ISA_CFG\n");
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goto out;
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}
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}
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/*
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* If the IRQ wasn't specified, get it from the EEPROM.
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*/
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if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) {
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irq = isa_cfg & ISA_CFG_IRQ_MASK;
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if (irq == 3)
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irq = 5;
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else
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irq += 10;
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} else
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irq = ia->ia_irq[0].ir_irq;
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/*
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* If the memory address wasn't specified, get it from the EEPROM.
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*/
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if (maddr == ISACF_IOMEM_DEFAULT) {
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if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) {
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/* EEPROM says don't use memory mode. */
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goto out;
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}
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if (cs_read_eeprom(&sc, EEPROM_MEM_BASE, &isa_membase)
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== CS_ERROR) {
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printf("cs_isa_probe: unable to read MEM_BASE\n");
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goto out;
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}
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isa_membase &= MEM_BASE_MASK;
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maddr = (int)isa_membase << 8;
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}
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/*
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* We now have a valid mem address; attempt to map it.
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*/
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if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) {
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/* Can't map it; fall back on i/o-only mode. */
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printf("cs_isa_probe: unable to map memory space\n");
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maddr = ISACF_IOMEM_DEFAULT;
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} else
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have_mem = 1;
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out:
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if (have_io)
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bus_space_unmap(iot, ioh, CS8900_IOSIZE);
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if (have_mem)
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bus_space_unmap(memt, memh, CS8900_MEMSIZE);
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if (rv) {
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = CS8900_IOSIZE;
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if (maddr == ISACF_IOMEM_DEFAULT)
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ia->ia_niomem = 0;
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else {
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ia->ia_niomem = 1;
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ia->ia_iomem[0].ir_addr = maddr;
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ia->ia_iomem[0].ir_size = CS8900_MEMSIZE;
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}
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ia->ia_nirq = 1;
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ia->ia_irq[0].ir_irq = irq;
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}
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return (rv);
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}
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void
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cs_isa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct cs_softc *sc = (struct cs_softc *) self;
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struct cs_softc_isa *isc = (void *) self;
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struct isa_attach_args *ia = aux;
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isc->sc_ic = ia->ia_ic;
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sc->sc_iot = ia->ia_iot;
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sc->sc_memt = ia->ia_memt;
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if (ia->ia_ndrq > 0)
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isc->sc_drq = ia->ia_drq[0].ir_drq;
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else
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isc->sc_drq = -1;
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sc->sc_irq = ia->ia_irq[0].ir_irq;
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printf("\n");
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/*
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* Map the device.
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*/
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if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE,
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0, &sc->sc_ioh)) {
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printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname);
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return;
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}
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/*
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* Validate IRQ.
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*/
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if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) {
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printf("%s: invalid IRQ %d\n", sc->sc_dev.dv_xname, sc->sc_irq);
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return;
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}
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/*
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* Map the memory space if it was specified. If we can do this,
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* we set ourselves up to use memory mode forever. Otherwise,
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* we fall back on I/O mode.
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*/
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if (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT &&
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ia->ia_iomem[0].ir_size == CS8900_MEMSIZE &&
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CS8900_MEMBASE_ISVALID(ia->ia_iomem[0].ir_addr)) {
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if (bus_space_map(sc->sc_memt, ia->ia_iomem[0].ir_addr,
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CS8900_MEMSIZE, 0, &sc->sc_memh)) {
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printf("%s: unable to map memory space\n",
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sc->sc_dev.dv_xname);
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} else {
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sc->sc_cfgflags |= CFGFLG_MEM_MODE;
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sc->sc_pktpgaddr = ia->ia_iomem[0].ir_addr;
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}
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}
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sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE,
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IPL_NET, cs_intr, sc);
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if (sc->sc_ih == NULL) {
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printf("%s: unable to establish interrupt\n",
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sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_dma_chipinit = cs_isa_dma_chipinit;
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sc->sc_dma_attach = cs_isa_dma_attach;
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sc->sc_dma_process_rx = cs_process_rx_dma;
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cs_attach(sc, NULL, NULL, 0, 0);
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}
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