2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors.
4 * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notices, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notices, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHORS BE LIABLE.
20 * $FreeBSD: src/sys/dev/si/si_isa.c,v 1.1 2000/01/24 07:24:01 peter Exp $
21 * $DragonFly: src/sys/dev/serial/si/si_isa.c,v 1.7 2006/12/22 23:26:24 swildner Exp $
24 #include "opt_debug_si.h"
26 #include <sys/param.h>
27 #include <sys/systm.h>
28 #include <sys/kernel.h>
35 #include <bus/isa/isavar.h>
37 /* Look for a valid board at the given mem addr */
39 si_isa_probe(device_t dev)
44 volatile unsigned char was, *ux;
45 volatile unsigned char *maddr;
49 sc = device_get_softc(dev);
50 unit = device_get_unit(dev);
53 sc->sc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
55 0, ~0, SIPROBEALLOC, RF_ACTIVE);
58 paddr = (caddr_t)rman_get_start(sc->sc_mem_res);/* physical */
59 maddr = rman_get_virtual(sc->sc_mem_res); /* in kvm */
61 DPRINT((0, DBG_AUTOBOOT, "si%d: probe at virtual=0x%x physical=0x%x\n",
65 * this is a lie, but it's easier than trying to handle caching
66 * and ram conflicts in the >1M and <16M region.
68 if ((caddr_t)paddr < (caddr_t)0xA0000 ||
69 (caddr_t)paddr >= (caddr_t)0x100000) {
70 kprintf("si%d: iomem (%p) out of range\n",
75 if (((u_int)paddr & 0x7fff) != 0) {
76 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
77 "si%d: iomem (%x) not on 32k boundary\n", unit, paddr));
81 /* Is there anything out there? (0x17 is just an arbitrary number) */
84 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
85 "si%d: 0x17 check fail at phys 0x%x\n", unit, paddr));
89 * Let's look first for a JET ISA card, since that's pretty easy
91 * All jet hosts are supposed to have this string in the IDROM,
92 * but it's not worth checking on self-IDing busses like PCI.
95 unsigned char *jet_chk_str = "JET HOST BY KEV#";
97 for (i = 0; i < strlen(jet_chk_str); i++)
98 if (jet_chk_str[i] != *(maddr + SIJETIDSTR + 2 * i))
101 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET first check - 0x%x\n",
102 unit, (*(maddr+SIJETIDBASE))));
103 if (*(maddr+SIJETIDBASE) != (SISPLXID&0xff))
105 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET second check - 0x%x\n",
106 unit, (*(maddr+SIJETIDBASE+2))));
107 if (*(maddr+SIJETIDBASE+2) != ((SISPLXID&0xff00)>>8))
109 /* It must be a Jet ISA or RIO card */
110 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET id check - 0x%x\n",
111 unit, (*(maddr+SIUNIQID))));
112 if ((*(maddr+SIUNIQID) & 0xf0) != 0x20)
114 /* It must be a Jet ISA SI/XIO card */
115 *(maddr + SIJETCONFIG) = 0;
117 ramsize = SIJET_RAMSIZE;
122 * OK, now to see if whatever responded is really an SI card.
123 * Try for a MK II next (SIHOST2)
125 for (i = SIPLSIG; i < SIPLSIG + 8; i++)
126 if ((*(maddr+i) & 7) != (~(unsigned char)i & 7))
129 /* It must be an SIHOST2 */
130 *(maddr + SIPLRESET) = 0;
131 *(maddr + SIPLIRQCLR) = 0;
132 *(maddr + SIPLIRQSET) = 0x10;
134 ramsize = SIHOST2_RAMSIZE;
139 * Its not a MK II, so try for a MK I (SIHOST)
141 *(maddr+SIRESET) = 0x0; /* reset the card */
142 *(maddr+SIINTCL) = 0x0; /* clear int */
143 *(maddr+SIRAM) = 0x17;
144 if (*(maddr+SIRAM) != (unsigned char)0x17)
146 *(maddr+0x7ff8) = 0x17;
147 if (*(maddr+0x7ff8) != (unsigned char)0x17) {
148 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
149 "si%d: 0x17 check fail at phys 0x%x = 0x%x\n",
150 unit, paddr+0x77f8, *(maddr+0x77f8)));
154 /* It must be an SIHOST (maybe?) - there must be a better way XXX */
156 ramsize = SIHOST_RAMSIZE;
159 DPRINT((0, DBG_AUTOBOOT, "si%d: found type %d card, try memory test\n",
161 /* Try the acid test */
163 for (i = 0; i < ramsize; i++, ux++)
164 *ux = (unsigned char)(i&0xff);
166 for (i = 0; i < ramsize; i++, ux++) {
167 if ((was = *ux) != (unsigned char)(i&0xff)) {
168 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
169 "si%d: match fail at phys 0x%x, was %x should be %x\n",
170 unit, paddr + i, was, i&0xff));
175 /* clear out the RAM */
177 for (i = 0; i < ramsize; i++)
180 for (i = 0; i < ramsize; i++) {
181 if ((was = *ux++) != 0) {
182 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
183 "si%d: clear fail at phys 0x%x, was %x\n",
184 unit, paddr + i, was));
190 * Success, we've found a valid board, now fill in
191 * the adapter structure.
195 switch (isa_get_irq(dev)) {
202 DPRINT((0, DBG_AUTOBOOT|DBG_FAIL,
203 "si%d: bad IRQ value - %d\n",
204 unit, isa_get_irq(dev)));
207 sc->sc_memsize = SIHOST2_MEMSIZE;
210 switch (isa_get_irq(dev)) {
218 sc->sc_memsize = SIHOST_MEMSIZE;
221 switch (isa_get_irq(dev)) {
231 sc->sc_memsize = SIJETISA_MEMSIZE;
233 case SIMCA: /* MCA */
235 kprintf("si%d: card type %d not supported\n", unit, type);
239 bus_release_resource(dev, SYS_RES_MEMORY,
240 sc->sc_mem_rid, sc->sc_mem_res);
242 return (0); /* success! */
245 if (sc->sc_mem_res) {
246 bus_release_resource(dev, SYS_RES_MEMORY,
247 sc->sc_mem_rid, sc->sc_mem_res);
254 si_isa_attach(device_t dev)
262 sc = device_get_softc(dev);
265 sc->sc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
267 0, ~0, 1, RF_ACTIVE);
268 if (!sc->sc_mem_res) {
269 device_printf(dev, "couldn't map memory\n");
272 sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_mem_res);
273 sc->sc_maddr = rman_get_virtual(sc->sc_mem_res);
276 sc->sc_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irq_rid,
277 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
278 if (!sc->sc_irq_res) {
279 device_printf(dev, "couldn't allocate interrupt\n");
282 sc->sc_irq = rman_get_start(sc->sc_irq_res);
283 error = bus_setup_intr(dev, sc->sc_irq_res, 0, si_intr, sc, &ih, NULL);
285 device_printf(dev, "couldn't activate interrupt\n");
289 error = siattach(dev);
292 return (0); /* success */
297 if (sc->sc_irq_res) {
299 bus_teardown_intr(dev, sc->sc_irq_res, ih);
300 bus_release_resource(dev, SYS_RES_IRQ,
301 sc->sc_irq_rid, sc->sc_irq_res);
304 if (sc->sc_mem_res) {
305 bus_release_resource(dev, SYS_RES_MEMORY,
306 sc->sc_mem_rid, sc->sc_mem_res);
312 static device_method_t si_isa_methods[] = {
313 /* Device interface */
314 DEVMETHOD(device_probe, si_isa_probe),
315 DEVMETHOD(device_attach, si_isa_attach),
320 static driver_t si_isa_driver = {
323 sizeof(struct si_softc),
326 DRIVER_MODULE(si, isa, si_isa_driver, si_devclass, 0, 0);