2 * Copyright (c) 2002 - 2007 Søren Schmidt <sos@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, 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 THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
40 #include <sys/taskqueue.h>
42 #include <machine/resource.h>
43 #include <machine/bus.h>
45 #include <isa/isavar.h>
46 #include <dev/ata/ata-all.h>
50 struct ata_cbus_controller {
52 struct resource *ctlio;
53 struct resource *bankio;
61 void (*function)(void *);
66 /* local prototypes */
67 static void ata_cbus_intr(void *);
68 static int ata_cbuschannel_banking(device_t dev, int flags);
71 ata_cbus_probe(device_t dev)
77 /* dont probe PnP devices */
78 if (isa_get_vendorid(dev))
81 /* allocate the ioport range */
83 if (!(io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
84 ATA_PC98_IOSIZE, RF_ACTIVE)))
87 /* calculate & set the altport range */
88 rid = ATA_PC98_CTLADDR_RID;
89 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
90 bus_set_resource(dev, SYS_RES_IOPORT, rid,
91 rman_get_start(io)+ATA_PC98_CTLOFFSET, ATA_CTLIOSIZE);
94 /* calculate & set the bank range */
95 rid = ATA_PC98_BANKADDR_RID;
96 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
97 bus_set_resource(dev, SYS_RES_IOPORT, rid,
98 ATA_PC98_BANK, ATA_PC98_BANKIOSIZE);
101 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
106 ata_cbus_attach(device_t dev)
108 struct ata_cbus_controller *ctlr = device_get_softc(dev);
111 /* allocate resources */
112 rid = ATA_IOADDR_RID;
113 if (!(ctlr->io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
114 ATA_PC98_IOSIZE, RF_ACTIVE)))
117 rid = ATA_PC98_CTLADDR_RID;
119 bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
120 rman_get_start(ctlr->io) + ATA_PC98_CTLOFFSET, ~0,
121 ATA_CTLIOSIZE, RF_ACTIVE))) {
122 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
126 rid = ATA_PC98_BANKADDR_RID;
127 if (!(ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
129 ATA_PC98_BANKIOSIZE, RF_ACTIVE))) {
130 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
131 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
136 if (!(ctlr->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
137 RF_ACTIVE | RF_SHAREABLE))) {
138 device_printf(dev, "unable to alloc interrupt\n");
139 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
140 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
141 bus_release_resource(dev, SYS_RES_IOPORT,
142 ATA_PC98_BANKADDR_RID, ctlr->bankio);
146 if ((bus_setup_intr(dev, ctlr->irq, ATA_INTR_FLAGS,
147 NULL, ata_cbus_intr, ctlr, &ctlr->ih))) {
148 device_printf(dev, "unable to setup interrupt\n");
149 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
150 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
151 bus_release_resource(dev, SYS_RES_IOPORT,
152 ATA_PC98_BANKADDR_RID, ctlr->bankio);
153 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq);
157 mtx_init(&ctlr->bank_mtx, "ATA cbus bank lock", NULL, MTX_DEF);
158 ctlr->hardware_bank = -1;
159 ctlr->locked_bank = -1;
160 ctlr->restart_bank = -1;
162 if (!device_add_child(dev, "ata", 0))
164 if (!device_add_child(dev, "ata", 1))
167 return bus_generic_attach(dev);
170 static struct resource *
171 ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid,
172 u_long start, u_long end, u_long count, u_int flags)
174 struct ata_cbus_controller *ctlr = device_get_softc(dev);
176 if (type == SYS_RES_IOPORT) {
180 case ATA_CTLADDR_RID:
184 if (type == SYS_RES_IRQ)
190 ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq,
191 int flags, driver_filter_t *filter, driver_intr_t *intr,
192 void *arg, void **cookiep)
194 struct ata_cbus_controller *controller = device_get_softc(dev);
195 int unit = ((struct ata_channel *)device_get_softc(child))->unit;
197 if (filter != NULL) {
198 printf("ata-cbus.c: we cannot use a filter here\n");
201 controller->interrupt[unit].function = intr;
202 controller->interrupt[unit].argument = arg;
203 *cookiep = controller;
209 ata_cbus_print_child(device_t dev, device_t child)
211 struct ata_channel *ch = device_get_softc(child);
214 retval += bus_print_child_header(dev, child);
215 retval += printf(" at bank %d", ch->unit);
216 retval += bus_print_child_footer(dev, child);
221 ata_cbus_intr(void *data)
223 struct ata_cbus_controller *ctlr = data;
224 struct ata_channel *ch;
227 for (unit = 0; unit < 2; unit++) {
228 if (!(ch = ctlr->interrupt[unit].argument))
230 if (ata_cbuschannel_banking(ch->dev, ATA_LF_WHICH) == unit)
231 ctlr->interrupt[unit].function(ch);
235 static device_method_t ata_cbus_methods[] = {
236 /* device interface */
237 DEVMETHOD(device_probe, ata_cbus_probe),
238 DEVMETHOD(device_attach, ata_cbus_attach),
239 // DEVMETHOD(device_detach, ata_cbus_detach),
242 DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource),
243 DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr),
244 DEVMETHOD(bus_print_child, ata_cbus_print_child),
249 static driver_t ata_cbus_driver = {
252 sizeof(struct ata_cbus_controller),
255 static devclass_t ata_cbus_devclass;
257 DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, 0, 0);
260 ata_cbuschannel_probe(device_t dev)
262 struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev));
263 struct ata_channel *ch = device_get_softc(dev);
267 /* find channel number on this controller */
268 device_get_children(device_get_parent(dev), &children, &count);
269 for (i = 0; i < count; i++) {
270 if (children[i] == dev)
273 free(children, M_TEMP);
275 /* setup the resource vectors */
276 for (i = ATA_DATA; i <= ATA_COMMAND; i ++) {
277 ch->r_io[i].res = ctlr->io;
278 ch->r_io[i].offset = i << 1;
280 ch->r_io[ATA_CONTROL].res = ctlr->ctlio;
281 ch->r_io[ATA_CONTROL].offset = 0;
282 ch->r_io[ATA_IDX_ADDR].res = ctlr->io;
283 ata_default_registers(dev);
285 /* initialize softc for this channel */
286 ch->flags |= ATA_USE_16BIT;
288 return ata_probe(dev);
292 ata_cbuschannel_banking(device_t dev, int flags)
294 struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev));
295 struct ata_channel *ch = device_get_softc(dev);
298 mtx_lock(&ctlr->bank_mtx);
301 if (ctlr->locked_bank == -1)
302 ctlr->locked_bank = ch->unit;
303 if (ctlr->locked_bank == ch->unit) {
304 ctlr->hardware_bank = ch->unit;
305 ATA_OUTB(ctlr->bankio, 0, ch->unit);
308 ctlr->restart_bank = ch->unit;
312 if (ctlr->locked_bank == ch->unit) {
313 ctlr->locked_bank = -1;
314 if (ctlr->restart_bank != -1) {
315 if ((ch = ctlr->interrupt[ctlr->restart_bank].argument)) {
316 ctlr->restart_bank = -1;
317 mtx_unlock(&ctlr->bank_mtx);
328 res = ctlr->locked_bank;
329 mtx_unlock(&ctlr->bank_mtx);
333 static device_method_t ata_cbuschannel_methods[] = {
334 /* device interface */
335 DEVMETHOD(device_probe, ata_cbuschannel_probe),
336 DEVMETHOD(device_attach, ata_attach),
337 DEVMETHOD(device_detach, ata_detach),
338 DEVMETHOD(device_suspend, ata_suspend),
339 DEVMETHOD(device_resume, ata_resume),
342 DEVMETHOD(ata_locking, ata_cbuschannel_banking),
346 static driver_t ata_cbuschannel_driver = {
348 ata_cbuschannel_methods,
349 sizeof(struct ata_channel),
352 DRIVER_MODULE(ata, atacbus, ata_cbuschannel_driver, ata_devclass, 0, 0);
353 MODULE_DEPEND(ata, ata, 1, 1, 1);