177 lines
5.3 KiB
C
177 lines
5.3 KiB
C
/* $NetBSD: if_tribm_isa.c,v 1.3 2001/11/13 08:01:21 lukem Exp $ */
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/*
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Onno van der Linden.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by The NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* 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_tribm_isa.c,v 1.3 2001/11/13 08:01:21 lukem 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 <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 <dev/isa/isavar.h>
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#include <dev/ic/tropicreg.h>
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#include <dev/ic/tropicvar.h>
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int tribm_isa_probe __P((struct device *, struct cfdata *, void *));
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int tr_isa_map_io __P((struct isa_attach_args *, bus_space_handle_t *,
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bus_space_handle_t *));
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void tr_isa_unmap_io __P((struct isa_attach_args *, bus_space_handle_t,
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bus_space_handle_t));
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int
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tribm_isa_probe(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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static int irq_f[4] = { 9, 3, 6, 7 };
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static int irq_e[4] = { 9, 3, 10, 11 };
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bus_space_tag_t piot = ia->ia_iot;
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bus_space_tag_t memt = ia->ia_memt;
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bus_space_handle_t pioh, mmioh;
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int i, irq;
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u_int8_t s;
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#ifdef notyet
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/* XXX Try both 0xa20 and 0xa24 and store that info like 3com */
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if (ia->ia_iobase == IOBASEUNK)
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ia->ia_iobase = 0xa20;
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#else
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if (ia->ia_iobase == IOBASEUNK)
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return 0;
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#endif
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ia->ia_iosize = 4;
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ia->ia_aux = NULL;
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if (tr_isa_map_io(ia, &pioh, &mmioh))
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return 0;
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/*
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* F = Token-Ring Network PC Adapter
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* Token-Ring Network PC Adapter II
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* Token-Ring Network Adapter/A
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* E = Token-Ring Network 16/4 Adapter/A (long card)
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* Token-Ring Network 16/4 Adapter
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* D = Token-Ring Network 16/4 Adapter/A (short card)
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* 16/4 ISA-16 Adapter
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* C = Auto 16/4 Token-Ring ISA Adapter
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* Auto 16/4 Token-Ring MC Adapter
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*/
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/*
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* XXX Both 0xD and 0xC types should be able to use 16-bit read and writes
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*/
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switch (bus_space_read_1(memt, mmioh, TR_TYP_OFFSET)) {
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case 0xF:
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case 0xE:
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case 0xD:
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if (ia->ia_maddr == MADDRUNK)
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#ifdef notyet
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ia->ia_maddr = TR_SRAM_DEFAULT;
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#else
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return 0;
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#endif
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break;
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case 0xC:
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i = bus_space_read_1(memt, mmioh, TR_ACA_OFFSET) << 12;
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if (ia->ia_maddr == MADDRUNK)
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ia->ia_maddr = i;
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else if (ia->ia_maddr != i) {
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printf(
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"tribm_isa_probe: sram mismatch; kernel configured %x != board configured %x\n",
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ia->ia_maddr, i);
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tr_isa_unmap_io(ia, pioh, mmioh);
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return 0;
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}
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break;
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default:
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printf("tribm_isa_probe: unknown type code %x\n",
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bus_space_read_1(memt, mmioh, TR_TYP_OFFSET));
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tr_isa_unmap_io(ia, pioh, mmioh);
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return 0;
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}
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s = bus_space_read_1(piot, pioh, TR_SWITCH);
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switch (bus_space_read_1(memt, mmioh, TR_IRQ_OFFSET)) {
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case 0xF:
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irq = irq_f[s & 3];
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break;
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case 0xE:
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irq = irq_e[s & 3];
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break;
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default:
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printf("tribm_isa_probe: Unknown IRQ code %x\n",
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bus_space_read_1(memt, mmioh, TR_IRQ_OFFSET));
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tr_isa_unmap_io(ia, pioh, mmioh);
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return 0;
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}
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if (ia->ia_irq == IRQUNK)
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ia->ia_irq = irq;
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else if (ia->ia_irq != irq) {
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printf(
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"tribm_isa_probe: irq mismatch; kernel configured %d != board configured %d\n",
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ia->ia_irq, irq);
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tr_isa_unmap_io(ia, pioh, mmioh);
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return 0;
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}
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/*
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* XXX 0x0c == MSIZEMASK (MSIZEBITS)
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*/
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ia->ia_msize = 8192 <<
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((bus_space_read_1(memt, mmioh, TR_ACA_OFFSET + 1) & 0x0c) >> 2);
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tr_isa_unmap_io(ia, pioh, mmioh);
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/* Check alignment of membase. */
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if ((ia->ia_maddr & (ia->ia_msize-1)) != 0) {
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printf("tribm_isa_probe: SRAM unaligned 0x%04x/%d\n",
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ia->ia_maddr, ia->ia_msize);
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return 0;
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}
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return 1;
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}
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