2 * Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
3 * based on work by Slawa Olhovchenkov
4 * John Prince <johnp@knight-trosoft.com>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/dev/digi/digi_isa.c,v 1.12 2003/08/24 17:46:03 obrien Exp $
34 * Figure out how to make the non-Xi boards use memory addresses other
38 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
49 #include <dev/serial/digi/digiio.h>
50 #include <dev/serial/digi/digireg.h>
51 #include <dev/serial/digi/digi.h>
53 /* Valid i/o addresses are any of these with either 0 or 4 added */
54 static u_long digi_validio[] = {
55 0x100, 0x110, 0x120, 0x200, 0x220, 0x300, 0x320
57 #define DIGI_NVALIDIO NELEM(digi_validio)
60 static u_long digi_validmem[] = {
61 0x80000, 0x88000, 0x90000, 0x98000, 0xa0000, 0xa8000, 0xb0000, 0xb8000,
62 0xc0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000, 0xe8000, 0xf0000, 0xf8000,
63 0xf0000000, 0xf1000000, 0xf2000000, 0xf3000000, 0xf4000000, 0xf5000000,
64 0xf6000000, 0xf7000000, 0xf8000000, 0xf9000000, 0xfa000000, 0xfb000000,
65 0xfc000000, 0xfd000000, 0xfe000000, 0xff000000
67 #define DIGI_NVALIDMEM NELEM(digi_validmem)
70 digi_isa_setwin(struct digi_softc *sc, unsigned int addr)
72 outb(sc->wport, sc->window = FEPWIN | (addr >> sc->win_bits));
73 return (sc->vmem + (addr % sc->win_size));
77 digi_xi_setwin(struct digi_softc *sc, unsigned int addr)
79 outb(sc->wport, sc->window = FEPMEM);
80 return (sc->vmem + addr);
84 digi_isa_hidewin(struct digi_softc *sc)
86 outb(sc->wport, sc->window = 0);
87 /* outb(sc->port, 0); */
91 digi_isa_towin(struct digi_softc *sc, int win)
93 outb(sc->wport, sc->window = win);
97 digi_xi_towin(struct digi_softc *sc, int win)
99 outb(sc->wport, sc->window = FEPMEM);
103 * sc->port should be set and its resource allocated.
106 digi_isa_check(struct digi_softc *sc)
112 /* Invasive probe - reset the card */
113 outb(sc->port, FEPRST);
114 for (i = 0; (inb(sc->port) & FEPMASK) != FEPRST; i++) {
117 digi_delay(sc, "digirst", 1);
119 DLOG(DIGIDB_INIT, (sc->dev, "got reset after %d iterations\n", i));
121 ident = inb(sc->port);
124 * NOTE, this probe is all wrong. I haven't got the data sheets !
127 DLOG(DIGIDB_INIT, (sc->dev, "board type is 0x%x\n", ident));
135 sc->csigs = &digi_xixe_signals;
136 switch (ident & 0x30) {
138 sc->name = "Digiboard PC/Xi 64K";
139 sc->mem_seg = 0xf000;
140 sc->win_size = 0x10000;
144 sc->name = "Digiboard PC/Xi 128K";
145 sc->mem_seg = 0xE000;
146 sc->win_size = 0x20000;
150 sc->name = "Digiboard PC/Xi 256K";
151 sc->mem_seg = 0xC000;
152 sc->win_size = 0x40000;
156 sc->name = "Digiboard PC/Xi 512K";
157 sc->mem_seg = 0x8000;
158 sc->win_size = 0x80000;
162 sc->wport = sc->port;
165 sc->setwin = digi_xi_setwin;
166 sc->hidewin = digi_isa_hidewin;
167 sc->towin = digi_xi_towin;
171 sc->name = "Digiboard PC/Xem";
173 sc->csigs = &digi_normal_signals;
174 sc->win_size = 0x8000;
176 sc->wport = sc->port + 1;
179 sc->setwin = digi_isa_setwin;
180 sc->hidewin = digi_isa_hidewin;
181 sc->towin = digi_isa_towin;
186 ident = inb(sc->port);
189 device_printf(sc->dev, "PC/Xm is unsupported\n");
193 sc->mem_seg = 0xf000;
195 if (!(ident & 0xc0)) {
196 sc->name = "Digiboard PC/Xe 64K";
198 sc->csigs = &digi_xixe_signals;
199 sc->win_size = 0x10000;
201 sc->wport = sc->port;
203 sc->name = "Digiboard PC/Xe 64/8K (windowed)";
205 sc->csigs = &digi_normal_signals;
206 sc->win_size = 0x2000;
208 sc->wport = sc->port + 1;
212 sc->setwin = digi_isa_setwin;
213 sc->hidewin = digi_isa_hidewin;
214 sc->towin = digi_isa_towin;
217 return (sc->name != NULL);
221 digi_isa_probe(device_t dev)
223 struct digi_softc *sc = device_get_softc(dev);
226 KASSERT(sc, ("digi%d: softc not allocated in digi_isa_probe\n",
227 device_get_unit(dev)));
229 bzero(sc, sizeof(*sc));
230 sc->status = DIGI_STATUS_NOTINIT;
232 sc->res.unit = device_get_unit(dev);
233 if (sc->res.unit >= 16) {
234 /* Don't overflow our control mask */
235 device_printf(dev, "At most 16 digiboards may be used\n");
238 DLOG(DIGIDB_INIT, (sc->dev, "probing on isa bus\n"));
240 /* Check that we've got a valid i/o address */
241 if ((sc->port = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0) {
242 DLOG(DIGIDB_INIT, (sc->dev, "io address not given\n"));
245 for (i = 0; i < DIGI_NVALIDIO; i++)
246 if (sc->port == digi_validio[i] ||
247 sc->port == digi_validio[i] + 4)
249 if (i == DIGI_NVALIDIO) {
250 device_printf(dev, "0x%03x: Invalid i/o address\n", sc->port);
254 /* Ditto for our memory address */
255 if ((sc->pmem = bus_get_resource_start(dev, SYS_RES_MEMORY, 0)) == 0)
257 for (i = 0; i < DIGI_NVALIDMEM; i++)
258 if (sc->pmem == digi_validmem[i])
260 if (i == DIGI_NVALIDMEM) {
261 device_printf(dev, "0x%lx: Invalid memory address\n", sc->pmem);
264 if ((sc->pmem & 0xfffffful) != sc->pmem) {
265 device_printf(dev, "0x%lx: Memory address not supported\n",
269 sc->vmem = (u_char *)sc->pmem;
271 DLOG(DIGIDB_INIT, (sc->dev, "isa? port 0x%03x mem 0x%lx\n",
272 sc->port, sc->pmem));
274 /* Temporarily map our io ports */
276 sc->res.io = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->res.iorid,
277 0ul, ~0ul, IO_SIZE, RF_ACTIVE);
278 if (sc->res.io == NULL)
281 /* Check the type of card and get internal memory characteristics */
282 if (!digi_isa_check(sc)) {
283 bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
288 /* Temporarily map our memory */
290 sc->res.mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->res.mrid,
291 0ul, ~0ul, sc->win_size, RF_ALLOCATED);
292 if (sc->res.mem == NULL) {
293 device_printf(dev, "0x%lx: Memory range is in use\n", sc->pmem);
294 bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
299 outb(sc->port, FEPCLR); /* drop RESET */
300 sc->hidewin(sc); /* set initial sc->window */
302 bus_release_resource(dev, SYS_RES_MEMORY, sc->res.mrid, sc->res.mem);
303 bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid, sc->res.io);
305 /* Let digi_isa_attach() know what we've found */
306 bus_set_resource(dev, SYS_RES_IOPORT, 0, sc->port, IO_SIZE);
307 bus_set_resource(dev, SYS_RES_MEMORY, 0, sc->pmem, sc->win_size);
309 DLOG(DIGIDB_INIT, (sc->dev, "Probe returns -10\n"));
311 return (-10); /* Other drivers are preferred for now */
315 digi_isa_attach(device_t dev)
317 struct digi_softc *sc = device_get_softc(dev);
321 u_long msize, iosize;
324 KASSERT(sc, ("digi%d: softc not allocated in digi_isa_attach\n",
325 device_get_unit(dev)));
328 bzero(sc, sizeof(*sc));
329 sc->status = DIGI_STATUS_NOTINIT;
331 sc->res.unit = device_get_unit(dev);
332 DLOG(DIGIDB_INIT, (sc->dev, "attaching\n"));
334 bus_get_resource(dev, SYS_RES_IOPORT, 0, &scport, &iosize);
335 bus_get_resource(dev, SYS_RES_MEMORY, 0, &sc->pmem, &msize);
337 /* sc->altpin = !!(device_get_flags(dev) & DGBFLAG_ALTPIN); */
339 /* Allocate resources (verified in digi_isa_probe()) */
341 sc->res.io = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->res.iorid,
342 0ul, ~0ul, iosize, RF_ACTIVE);
343 if (sc->res.io == NULL)
346 /* Check the type of card and get internal memory characteristics */
347 DLOG(DIGIDB_INIT, (sc->dev, "Checking card type\n"));
348 if (!digi_isa_check(sc))
351 callout_init(&sc->callout);
352 callout_init(&sc->inttest);
355 sc->res.mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->res.mrid,
356 0ul, ~0ul, msize, RF_ACTIVE);
357 if (sc->res.mem == NULL) {
358 device_printf(dev, "0x%lx: Memory range is in use\n", sc->pmem);
364 sc->vmem = pmap_mapdev(sc->pmem, msize);
367 DLOG(DIGIDB_INIT, (sc->dev, "internal memory segment 0x%x\n",
370 /* Start by resetting the card */
372 if (sc->model == PCXI)
375 outb(sc->port, reset);
376 for (i = 0; (inb(sc->port) & FEPMASK) != reset; i++) {
378 device_printf(dev, "1st reset failed\n");
382 digi_delay(sc, "digirst1", 1);
384 DLOG(DIGIDB_INIT, (sc->dev, "got reset after %d iterations\n", i));
386 if (sc->model != PCXI) {
387 t = (sc->pmem >> 8) & 0xffe0;
388 if (sc->model == PCXEVE)
389 t |= 0x10; /* enable windowing */
390 outb(sc->port + 2, t & 0xff);
391 outb(sc->port + 3, t >> 8);
394 if (sc->model == PCXI || sc->model == PCXE) {
395 outb(sc->port, FEPRST | FEPMEM);
396 for (i = 0; (inb(sc->port) & FEPMASK) != FEPRST; i++) {
399 "memory reservation failed (0x%02x)\n",
404 digi_delay(sc, "digirst2", 1);
406 DLOG(DIGIDB_INIT, (sc->dev, "got memory after %d iterations\n",
410 DLOG(DIGIDB_INIT, (sc->dev, "short memory test\n"));
411 ptr = sc->setwin(sc, BOTWIN);
412 vD(ptr) = 0xA55A3CC3;
413 if (vD(ptr) != 0xA55A3CC3) {
414 device_printf(dev, "1st memory test failed\n");
418 DLOG(DIGIDB_INIT, (sc->dev, "1st memory test ok\n"));
420 ptr = sc->setwin(sc, TOPWIN);
421 vD(ptr) = 0x5AA5C33C;
422 if (vD(ptr) != 0x5AA5C33C) {
423 device_printf(dev, "2nd memory test failed\n");
427 DLOG(DIGIDB_INIT, (sc->dev, "2nd memory test ok\n"));
429 ptr = sc->setwin(sc, BIOSCODE + ((0xf000 - sc->mem_seg) << 4));
430 vD(ptr) = 0x5AA5C33C;
431 if (vD(ptr) != 0x5AA5C33C) {
432 device_printf(dev, "3rd (BIOS) memory test failed\n");
436 DLOG(DIGIDB_INIT, (sc->dev, "3rd memory test ok\n"));
438 if ((res = digi_attach(sc)) == 0)
442 if (sc->res.mem != NULL) {
443 bus_release_resource(dev, SYS_RES_MEMORY, sc->res.mrid,
447 if (sc->res.io != NULL) {
448 bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
456 static device_method_t digi_isa_methods[] = {
457 /* Device interface */
458 DEVMETHOD(device_probe, digi_isa_probe),
459 DEVMETHOD(device_attach, digi_isa_attach),
460 DEVMETHOD(device_detach, digi_detach),
461 DEVMETHOD(device_shutdown, digi_shutdown),
465 static driver_t digi_isa_drv = {
468 sizeof(struct digi_softc),
470 DRIVER_MODULE(digi, isa, digi_isa_drv, digi_devclass, 0, 0);