305 lines
7.9 KiB
C
305 lines
7.9 KiB
C
/* $NetBSD: if_fmv_isa.c,v 1.3 2004/09/14 20:20:47 drochner Exp $ */
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/*
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* All Rights Reserved, Copyright (C) Fujitsu Limited 1995
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*
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* This software may be used, modified, copied, distributed, and sold, in
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* both source and binary form provided that the above copyright, these
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* terms and the following disclaimer are retained. The name of the author
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* and/or the contributor may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION.
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Portions copyright (C) 1993, David Greenman. This software may be used,
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* modified, copied, distributed, and sold, in both source and binary form
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* provided that the above copyright and these terms are retained. Under no
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* circumstances is the author responsible for the proper functioning of this
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* software, nor does the author assume any responsibility for damages
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* incurred with its use.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_fmv_isa.c,v 1.3 2004/09/14 20:20:47 drochner Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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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/ic/mb86960reg.h>
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#include <dev/ic/mb86960var.h>
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#include <dev/ic/fmvreg.h>
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#include <dev/ic/fmvvar.h>
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#include <dev/isa/isavar.h>
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int fmv_isa_match __P((struct device *, struct cfdata *, void *));
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void fmv_isa_attach __P((struct device *, struct device *, void *));
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struct fmv_isa_softc {
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struct mb86960_softc sc_mb86960; /* real "mb86960" softc */
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/* ISA-specific goo. */
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void *sc_ih; /* interrupt cookie */
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};
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CFATTACH_DECL(fmv_isa, sizeof(struct fmv_isa_softc),
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fmv_isa_match, fmv_isa_attach, NULL, NULL);
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struct fe_simple_probe_struct {
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u_int8_t port; /* Offset from the base I/O address. */
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u_int8_t mask; /* Bits to be checked. */
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u_int8_t bits; /* Values to be compared against. */
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};
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static __inline__ int fe_simple_probe __P((bus_space_tag_t,
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bus_space_handle_t, struct fe_simple_probe_struct const *));
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static int fmv_find __P((bus_space_tag_t, bus_space_handle_t, int *, int *));
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static int const fmv_iomap[8] = {
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0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x300, 0x340
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};
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#define NFMV_IOMAP (sizeof (fmv_iomap) / sizeof (fmv_iomap[0]))
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#define FMV_NPORTS 0x20
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/*
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* Hardware probe routines.
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*/
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/*
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* Determine if the device is present.
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*/
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int
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fmv_isa_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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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_handle_t ioh;
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int i, iobase, irq, rv = 0;
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u_int8_t myea[ETHER_ADDR_LEN];
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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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/* Disallow wildcarded values. */
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if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
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return (0);
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/*
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* See if the sepcified address is valid for FMV-180 series.
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*/
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for (i = 0; i < NFMV_IOMAP; i++)
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if (fmv_iomap[i] == ia->ia_io[0].ir_addr)
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break;
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if (i == NFMV_IOMAP) {
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#ifdef FMV_DEBUG
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printf("fmv_match: unknown iobase 0x%x\n",
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ia->ia_io[0].ir_addr);
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#endif
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return (0);
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}
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/* Map i/o space. */
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if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) {
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#ifdef FMV_DEBUG
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printf("fmv_match: couldn't map iospace 0x%x\n",
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ia->ia_io[0].ir_addr);
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#endif
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return (0);
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}
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if (fmv_find(iot, ioh, &iobase, &irq) == 0) {
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#ifdef FMV_DEBUG
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printf("fmv_match: fmv_find failed\n");
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#endif
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goto out;
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}
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if (iobase != ia->ia_io[0].ir_addr) {
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#ifdef FMV_DEBUG
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printf("fmv_match: unexpected iobase in board: 0x%x\n",
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iobase);
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#endif
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goto out;
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}
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if (fmv_detect(iot, ioh, myea) == 0) { /* XXX necessary? */
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#ifdef FMV_DEBUG
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printf("fmv_match: fmv_detect failed\n");
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#endif
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goto out;
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}
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if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) {
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if (ia->ia_irq[0].ir_irq != irq) {
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printf("fmv_match: irq mismatch; "
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"kernel configured %d != board configured %d\n",
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ia->ia_irq[0].ir_irq, irq);
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goto out;
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}
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} else
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ia->ia_irq[0].ir_irq = irq;
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = FMV_NPORTS;
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ia->ia_nirq = 1;
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ia->ia_niomem = 0;
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ia->ia_ndrq = 0;
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rv = 1;
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out:
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bus_space_unmap(iot, ioh, FMV_NPORTS);
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return (rv);
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}
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/*
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* Check for specific bits in specific registers have specific values.
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*/
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static __inline__ int
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fe_simple_probe (iot, ioh, sp)
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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struct fe_simple_probe_struct const *sp;
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{
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u_int8_t val;
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struct fe_simple_probe_struct const *p;
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for (p = sp; p->mask != 0; p++) {
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val = bus_space_read_1(iot, ioh, p->port);
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if ((val & p->mask) != p->bits) {
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#ifdef FMV_DEBUG
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printf("fe_simple_probe: %x & %x != %x\n",
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val, p->mask, p->bits);
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#endif
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return (0);
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}
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}
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return (1);
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}
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/*
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* Hardware (vendor) specific probe routines.
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*/
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/*
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* Probe Fujitsu FMV-180 series boards and get iobase and irq from
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* board.
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*/
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static int
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fmv_find(iot, ioh, iobase, irq)
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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int *iobase, *irq;
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{
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u_int8_t config;
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static int const fmv_irqmap[4] = { 3, 7, 10, 15 };
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static struct fe_simple_probe_struct const probe_table[] = {
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{ FE_DLCR2, 0x70, 0x00 },
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{ FE_DLCR4, 0x08, 0x00 },
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/* { FE_DLCR5, 0x80, 0x00 }, Doesn't work. */
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{ FE_FMV0, FE_FMV0_MAGIC_MASK, FE_FMV0_MAGIC_VALUE },
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{ FE_FMV1, FE_FMV1_MAGIC_MASK, FE_FMV1_MAGIC_VALUE },
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{ FE_FMV3, FE_FMV3_EXTRA_MASK, FE_FMV3_EXTRA_VALUE },
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#if 1
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/*
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* Test *vendor* part of the station address for Fujitsu.
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* The test will gain reliability of probe process, but
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* it rejects FMV-180 clone boards manufactured by other vendors.
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* We have to turn the test off when such cards are made available.
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*/
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{ FE_FMV4, 0xFF, 0x00 },
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{ FE_FMV5, 0xFF, 0x00 },
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{ FE_FMV6, 0xFF, 0x0E },
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#else
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/*
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* We can always verify the *first* 2 bits (in Ehternet
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* bit order) are "no multicast" and "no local" even for
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* unknown vendors.
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*/
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{ FE_FMV4, 0x03, 0x00 },
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#endif
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{ 0 }
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};
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/* Simple probe. */
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if (!fe_simple_probe(iot, ioh, probe_table))
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return (0);
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/* Check if our I/O address matches config info on EEPROM. */
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config = bus_space_read_1(iot, ioh, FE_FMV2);
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*iobase = fmv_iomap[(config & FE_FMV2_ADDR) >> FE_FMV2_ADDR_SHIFT];
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/*
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* Determine which IRQ to be used.
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*
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* In this version, we always get an IRQ assignment from the
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* FMV-180's configuration EEPROM, ignoring that specified in
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* config file.
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*/
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*irq = fmv_irqmap[(config & FE_FMV2_IRQ) >> FE_FMV2_IRQ_SHIFT];
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return (1);
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}
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void
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fmv_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 fmv_isa_softc *isc = (struct fmv_isa_softc *)self;
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struct mb86960_softc *sc = &isc->sc_mb86960;
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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_handle_t ioh;
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/* Map i/o space. */
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if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) {
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printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_bst = iot;
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sc->sc_bsh = ioh;
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fmv_attach(sc);
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/* Establish the interrupt handler. */
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isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
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IST_EDGE, IPL_NET, mb86960_intr, sc);
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if (isc->sc_ih == NULL)
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printf("%s: couldn't establish interrupt handler\n",
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sc->sc_dev.dv_xname);
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}
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