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b830d4388e
Split out the bus attachments so the impact of the bus xxxvar.h files with the inline macros for the ivars are confined to one file each.
329 lines
8.0 KiB
C
329 lines
8.0 KiB
C
/*
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* Device driver for Specialix range (SI/XIO) of serial line multiplexors.
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*
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* Copyright (C) 2000, Peter Wemm <peter@netplex.com.au>
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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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* notices, 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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* notices, 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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*
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* THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHORS BE LIABLE.
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*
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* $FreeBSD$
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*/
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#include "opt_debug_si.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/si/sireg.h>
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#include <dev/si/sivar.h>
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#include <isa/isavar.h>
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/* Look for a valid board at the given mem addr */
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static int
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si_isa_probe(device_t dev)
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{
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struct si_softc *sc;
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int type;
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u_int i, ramsize;
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volatile unsigned char was, *ux;
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volatile unsigned char *maddr;
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unsigned char *paddr;
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int unit;
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sc = device_get_softc(dev);
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unit = device_get_unit(dev);
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sc->sc_mem_rid = 0;
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sc->sc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->sc_mem_rid,
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0, ~0, SIPROBEALLOC, RF_ACTIVE);
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if (!sc->sc_mem_res)
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return ENXIO;
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paddr = (caddr_t)rman_get_start(sc->sc_mem_res);/* physical */
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maddr = rman_get_virtual(sc->sc_mem_res); /* in kvm */
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DPRINT((0, DBG_AUTOBOOT, "si%d: probe at virtual=0x%x physical=0x%x\n",
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unit, maddr, paddr));
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/*
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* this is a lie, but it's easier than trying to handle caching
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* and ram conflicts in the >1M and <16M region.
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*/
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if ((caddr_t)paddr < (caddr_t)0xA0000 ||
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(caddr_t)paddr >= (caddr_t)0x100000) {
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printf("si%d: iomem (%p) out of range\n",
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unit, (void *)paddr);
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goto fail;
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}
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if (((u_int)paddr & 0x7fff) != 0) {
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
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"si%d: iomem (%x) not on 32k boundary\n", unit, paddr));
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goto fail;
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}
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/* Is there anything out there? (0x17 is just an arbitrary number) */
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*maddr = 0x17;
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if (*maddr != 0x17) {
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
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"si%d: 0x17 check fail at phys 0x%x\n", unit, paddr));
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goto fail;
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}
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/*
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* Let's look first for a JET ISA card, since that's pretty easy
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*
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* All jet hosts are supposed to have this string in the IDROM,
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* but it's not worth checking on self-IDing busses like PCI.
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*/
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{
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unsigned char *jet_chk_str = "JET HOST BY KEV#";
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for (i = 0; i < strlen(jet_chk_str); i++)
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if (jet_chk_str[i] != *(maddr + SIJETIDSTR + 2 * i))
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goto try_mk2;
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}
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET first check - 0x%x\n",
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unit, (*(maddr+SIJETIDBASE))));
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if (*(maddr+SIJETIDBASE) != (SISPLXID&0xff))
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goto try_mk2;
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET second check - 0x%x\n",
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unit, (*(maddr+SIJETIDBASE+2))));
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if (*(maddr+SIJETIDBASE+2) != ((SISPLXID&0xff00)>>8))
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goto try_mk2;
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/* It must be a Jet ISA or RIO card */
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET id check - 0x%x\n",
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unit, (*(maddr+SIUNIQID))));
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if ((*(maddr+SIUNIQID) & 0xf0) != 0x20)
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goto try_mk2;
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/* It must be a Jet ISA SI/XIO card */
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*(maddr + SIJETCONFIG) = 0;
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type = SIJETISA;
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ramsize = SIJET_RAMSIZE;
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goto got_card;
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try_mk2:
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/*
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* OK, now to see if whatever responded is really an SI card.
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* Try for a MK II next (SIHOST2)
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*/
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for (i = SIPLSIG; i < SIPLSIG + 8; i++)
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if ((*(maddr+i) & 7) != (~(unsigned char)i & 7))
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goto try_mk1;
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/* It must be an SIHOST2 */
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*(maddr + SIPLRESET) = 0;
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*(maddr + SIPLIRQCLR) = 0;
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*(maddr + SIPLIRQSET) = 0x10;
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type = SIHOST2;
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ramsize = SIHOST2_RAMSIZE;
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goto got_card;
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try_mk1:
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/*
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* Its not a MK II, so try for a MK I (SIHOST)
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*/
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*(maddr+SIRESET) = 0x0; /* reset the card */
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*(maddr+SIINTCL) = 0x0; /* clear int */
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*(maddr+SIRAM) = 0x17;
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if (*(maddr+SIRAM) != (unsigned char)0x17)
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goto fail;
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*(maddr+0x7ff8) = 0x17;
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if (*(maddr+0x7ff8) != (unsigned char)0x17) {
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
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"si%d: 0x17 check fail at phys 0x%x = 0x%x\n",
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unit, paddr+0x77f8, *(maddr+0x77f8)));
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goto fail;
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}
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/* It must be an SIHOST (maybe?) - there must be a better way XXX */
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type = SIHOST;
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ramsize = SIHOST_RAMSIZE;
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got_card:
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DPRINT((0, DBG_AUTOBOOT, "si%d: found type %d card, try memory test\n",
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unit, type));
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/* Try the acid test */
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ux = maddr + SIRAM;
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for (i = 0; i < ramsize; i++, ux++)
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*ux = (unsigned char)(i&0xff);
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ux = maddr + SIRAM;
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for (i = 0; i < ramsize; i++, ux++) {
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if ((was = *ux) != (unsigned char)(i&0xff)) {
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
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"si%d: match fail at phys 0x%x, was %x should be %x\n",
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unit, paddr + i, was, i&0xff));
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goto fail;
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}
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}
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/* clear out the RAM */
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ux = maddr + SIRAM;
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for (i = 0; i < ramsize; i++)
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*ux++ = 0;
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ux = maddr + SIRAM;
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for (i = 0; i < ramsize; i++) {
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if ((was = *ux++) != 0) {
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
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"si%d: clear fail at phys 0x%x, was %x\n",
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unit, paddr + i, was));
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goto fail;
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}
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}
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/*
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* Success, we've found a valid board, now fill in
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* the adapter structure.
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*/
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switch (type) {
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case SIHOST2:
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switch (isa_get_irq(dev)) {
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case 11:
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case 12:
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case 15:
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break;
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default:
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bad_irq:
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DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
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"si%d: bad IRQ value - %d\n",
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unit, isa_get_irq(dev)));
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goto fail;
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}
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sc->sc_memsize = SIHOST2_MEMSIZE;
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break;
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case SIHOST:
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switch (isa_get_irq(dev)) {
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case 11:
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case 12:
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case 15:
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break;
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default:
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goto bad_irq;
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}
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sc->sc_memsize = SIHOST_MEMSIZE;
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break;
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case SIJETISA:
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switch (isa_get_irq(dev)) {
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case 9:
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case 10:
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case 11:
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case 12:
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case 15:
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break;
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default:
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goto bad_irq;
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}
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sc->sc_memsize = SIJETISA_MEMSIZE;
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break;
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case SIMCA: /* MCA */
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default:
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printf("si%d: card type %d not supported\n", unit, type);
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goto fail;
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}
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sc->sc_type = type;
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bus_release_resource(dev, SYS_RES_MEMORY,
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sc->sc_mem_rid, sc->sc_mem_res);
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sc->sc_mem_res = 0;
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return (0); /* success! */
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fail:
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if (sc->sc_mem_res) {
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bus_release_resource(dev, SYS_RES_MEMORY,
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sc->sc_mem_rid, sc->sc_mem_res);
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sc->sc_mem_res = 0;
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}
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return(EINVAL);
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}
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static int
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si_isa_attach(device_t dev)
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{
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int error;
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void *ih;
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struct si_softc *sc;
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error = 0;
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ih = NULL;
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sc = device_get_softc(dev);
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sc->sc_mem_rid = 0;
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sc->sc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->sc_mem_rid,
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0, ~0, 1, RF_ACTIVE);
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if (!sc->sc_mem_res) {
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device_printf(dev, "couldn't map memory\n");
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goto fail;
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}
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sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_mem_res);
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sc->sc_maddr = rman_get_virtual(sc->sc_mem_res);
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sc->sc_irq_rid = 0;
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sc->sc_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irq_rid,
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0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
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if (!sc->sc_irq_res) {
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device_printf(dev, "couldn't allocate interrupt\n");
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goto fail;
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}
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sc->sc_irq = rman_get_start(sc->sc_irq_res);
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error = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_TTY,
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si_intr, sc,&ih);
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if (error) {
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device_printf(dev, "couldn't activate interrupt\n");
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goto fail;
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}
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error = siattach(dev);
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if (error)
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goto fail;
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return (0); /* success */
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fail:
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if (error == 0)
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error = ENXIO;
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if (sc->sc_irq_res) {
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if (ih)
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bus_teardown_intr(dev, sc->sc_irq_res, ih);
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bus_release_resource(dev, SYS_RES_IRQ,
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sc->sc_irq_rid, sc->sc_irq_res);
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sc->sc_irq_res = 0;
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}
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if (sc->sc_mem_res) {
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bus_release_resource(dev, SYS_RES_MEMORY,
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sc->sc_mem_rid, sc->sc_mem_res);
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sc->sc_mem_res = 0;
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}
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return (error);
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}
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static device_method_t si_isa_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, si_isa_probe),
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DEVMETHOD(device_attach, si_isa_attach),
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{ 0, 0 }
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};
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static driver_t si_isa_driver = {
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"si",
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si_isa_methods,
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sizeof(struct si_softc),
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};
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DRIVER_MODULE(si, isa, si_isa_driver, si_devclass, 0, 0);
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