1 /*-
2 * Copyright (c) 2002 - 2008 Søren Schmidt <sos@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
14 *
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.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/ata.h>
34 #include <sys/bus.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <sys/conf.h>
38 #include <sys/sema.h>
39 #include <sys/taskqueue.h>
40 #include <vm/uma.h>
41 #include <machine/resource.h>
42 #include <machine/bus.h>
43 #include <sys/rman.h>
44 #include <isa/isavar.h>
45 #include <dev/ata/ata-all.h>
46 #include <ata_if.h>
47
48 /* local vars */
49 struct ata_cbus_controller {
50 struct resource *io;
51 struct resource *ctlio;
52 struct resource *bankio;
53 struct resource *irq;
54 void *ih;
55 int channels;
56 struct {
57 void (*function)(void *);
58 void *argument;
59 } interrupt[2];
60 };
61
62 /* local prototypes */
63 static void ata_cbus_intr(void *);
64
65 static int
ata_cbus_probe(device_t dev)66 ata_cbus_probe(device_t dev)
67 {
68 struct resource *io;
69 int rid;
70 rman_res_t tmp;
71
72 /* dont probe PnP devices */
73 if (isa_get_vendorid(dev))
74 return (ENXIO);
75
76 /* allocate the ioport range */
77 rid = ATA_IOADDR_RID;
78 if (!(io = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
79 ATA_PC98_IOSIZE, RF_ACTIVE)))
80 return ENOMEM;
81
82 /* calculate & set the altport range */
83 rid = ATA_PC98_CTLADDR_RID;
84 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
85 bus_set_resource(dev, SYS_RES_IOPORT, rid,
86 rman_get_start(io)+ATA_PC98_CTLOFFSET, ATA_CTLIOSIZE);
87 }
88
89 /* calculate & set the bank range */
90 rid = ATA_PC98_BANKADDR_RID;
91 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
92 bus_set_resource(dev, SYS_RES_IOPORT, rid,
93 ATA_PC98_BANK, ATA_PC98_BANKIOSIZE);
94 }
95
96 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
97 return 0;
98 }
99
100 static int
ata_cbus_attach(device_t dev)101 ata_cbus_attach(device_t dev)
102 {
103 struct ata_cbus_controller *ctlr = device_get_softc(dev);
104 device_t child;
105 int rid, unit;
106
107 /* allocate resources */
108 rid = ATA_IOADDR_RID;
109 if (!(ctlr->io = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
110 ATA_PC98_IOSIZE, RF_ACTIVE)))
111 return ENOMEM;
112
113 rid = ATA_PC98_CTLADDR_RID;
114 if (!(ctlr->ctlio =
115 bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
116 rman_get_start(ctlr->io) + ATA_PC98_CTLOFFSET, ~0,
117 ATA_CTLIOSIZE, RF_ACTIVE))) {
118 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
119 return ENOMEM;
120 }
121
122 rid = ATA_PC98_BANKADDR_RID;
123 if (!(ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
124 ATA_PC98_BANK, ~0,
125 ATA_PC98_BANKIOSIZE, RF_ACTIVE))) {
126 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
127 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
128 return ENOMEM;
129 }
130
131 rid = ATA_IRQ_RID;
132 if (!(ctlr->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
133 RF_ACTIVE | RF_SHAREABLE))) {
134 device_printf(dev, "unable to alloc interrupt\n");
135 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
136 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
137 bus_release_resource(dev, SYS_RES_IOPORT,
138 ATA_PC98_BANKADDR_RID, ctlr->bankio);
139 return ENXIO;
140 }
141
142 if ((bus_setup_intr(dev, ctlr->irq, ATA_INTR_FLAGS,
143 NULL, ata_cbus_intr, ctlr, &ctlr->ih))) {
144 device_printf(dev, "unable to setup interrupt\n");
145 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
146 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
147 bus_release_resource(dev, SYS_RES_IOPORT,
148 ATA_PC98_BANKADDR_RID, ctlr->bankio);
149 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq);
150 return ENXIO;
151 }
152
153 /* Work around the lack of channel serialization in ATA_CAM. */
154 ctlr->channels = 1;
155 device_printf(dev, "second channel ignored\n");
156
157 for (unit = 0; unit < ctlr->channels; unit++) {
158 child = device_add_child(dev, "ata", unit);
159 if (child == NULL)
160 device_printf(dev, "failed to add ata child device\n");
161 else
162 device_set_ivars(child, (void *)(intptr_t)unit);
163 }
164
165 bus_generic_attach(dev);
166 return (0);
167 }
168
169 static struct resource *
ata_cbus_alloc_resource(device_t dev,device_t child,int type,int * rid,rman_res_t start,rman_res_t end,rman_res_t count,u_int flags)170 ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid,
171 rman_res_t start, rman_res_t end, rman_res_t count,
172 u_int flags)
173 {
174 struct ata_cbus_controller *ctlr = device_get_softc(dev);
175
176 if (type == SYS_RES_IOPORT) {
177 switch (*rid) {
178 case ATA_IOADDR_RID:
179 return ctlr->io;
180 case ATA_CTLADDR_RID:
181 return ctlr->ctlio;
182 }
183 }
184 if (type == SYS_RES_IRQ)
185 return ctlr->irq;
186 return 0;
187 }
188
189 static int
ata_cbus_setup_intr(device_t dev,device_t child,struct resource * irq,int flags,driver_filter_t * filter,driver_intr_t * intr,void * arg,void ** cookiep)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)
193 {
194 struct ata_cbus_controller *controller = device_get_softc(dev);
195 int unit = ((struct ata_channel *)device_get_softc(child))->unit;
196
197 if (filter != NULL) {
198 printf("ata-cbus.c: we cannot use a filter here\n");
199 return (EINVAL);
200 }
201 controller->interrupt[unit].function = intr;
202 controller->interrupt[unit].argument = arg;
203 *cookiep = controller;
204
205 return 0;
206 }
207
208 static int
ata_cbus_print_child(device_t dev,device_t child)209 ata_cbus_print_child(device_t dev, device_t child)
210 {
211 struct ata_channel *ch = device_get_softc(child);
212 int retval = 0;
213
214 retval += bus_print_child_header(dev, child);
215 retval += printf(" at bank %d", ch->unit);
216 retval += bus_print_child_footer(dev, child);
217 return retval;
218 }
219
220 static void
ata_cbus_intr(void * data)221 ata_cbus_intr(void *data)
222 {
223 struct ata_cbus_controller *ctlr = data;
224 struct ata_channel *ch;
225 int unit;
226
227 for (unit = 0; unit < ctlr->channels; unit++) {
228 if (!(ch = ctlr->interrupt[unit].argument))
229 continue;
230 ctlr->interrupt[unit].function(ch);
231 }
232 }
233
234 static device_method_t ata_cbus_methods[] = {
235 /* device interface */
236 DEVMETHOD(device_probe, ata_cbus_probe),
237 DEVMETHOD(device_attach, ata_cbus_attach),
238 // DEVMETHOD(device_detach, ata_cbus_detach),
239
240 /* bus methods */
241 DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource),
242 DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr),
243 DEVMETHOD(bus_print_child, ata_cbus_print_child),
244
245 DEVMETHOD_END
246 };
247
248 static driver_t ata_cbus_driver = {
249 "atacbus",
250 ata_cbus_methods,
251 sizeof(struct ata_cbus_controller),
252 };
253
254 static devclass_t ata_cbus_devclass;
255
256 DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, NULL, NULL);
257
258 static int
ata_cbuschannel_probe(device_t dev)259 ata_cbuschannel_probe(device_t dev)
260 {
261 char buffer[32];
262
263 sprintf(buffer, "ATA channel %d", (int)(intptr_t)device_get_ivars(dev));
264 device_set_desc_copy(dev, buffer);
265
266 return ata_probe(dev);
267 }
268
269 static int
ata_cbuschannel_attach(device_t dev)270 ata_cbuschannel_attach(device_t dev)
271 {
272 struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev));
273 struct ata_channel *ch = device_get_softc(dev);
274 int i;
275
276 if (ch->attached)
277 return (0);
278 ch->attached = 1;
279
280 ch->unit = (intptr_t)device_get_ivars(dev);
281 /* setup the resource vectors */
282 for (i = ATA_DATA; i <= ATA_COMMAND; i ++) {
283 ch->r_io[i].res = ctlr->io;
284 ch->r_io[i].offset = i << 1;
285 }
286 ch->r_io[ATA_CONTROL].res = ctlr->ctlio;
287 ch->r_io[ATA_CONTROL].offset = 0;
288 ch->r_io[ATA_IDX_ADDR].res = ctlr->io;
289 ata_default_registers(dev);
290
291 /* initialize softc for this channel */
292 ch->flags |= ATA_USE_16BIT;
293 ata_generic_hw(dev);
294
295 return ata_attach(dev);
296 }
297
298 static int
ata_cbuschannel_detach(device_t dev)299 ata_cbuschannel_detach(device_t dev)
300 {
301 struct ata_channel *ch = device_get_softc(dev);
302
303 if (!ch->attached)
304 return (0);
305 ch->attached = 0;
306
307 return ata_detach(dev);
308 }
309
310 static int
ata_cbuschannel_suspend(device_t dev)311 ata_cbuschannel_suspend(device_t dev)
312 {
313 struct ata_channel *ch = device_get_softc(dev);
314
315 if (!ch->attached)
316 return (0);
317
318 return ata_suspend(dev);
319 }
320
321 static int
ata_cbuschannel_resume(device_t dev)322 ata_cbuschannel_resume(device_t dev)
323 {
324 struct ata_channel *ch = device_get_softc(dev);
325
326 if (!ch->attached)
327 return (0);
328
329 return ata_resume(dev);
330 }
331
332 static device_method_t ata_cbuschannel_methods[] = {
333 /* device interface */
334 DEVMETHOD(device_probe, ata_cbuschannel_probe),
335 DEVMETHOD(device_attach, ata_cbuschannel_attach),
336 DEVMETHOD(device_detach, ata_cbuschannel_detach),
337 DEVMETHOD(device_suspend, ata_cbuschannel_suspend),
338 DEVMETHOD(device_resume, ata_cbuschannel_resume),
339 DEVMETHOD_END
340 };
341
342 static driver_t ata_cbuschannel_driver = {
343 "ata",
344 ata_cbuschannel_methods,
345 sizeof(struct ata_channel),
346 };
347
348 DRIVER_MODULE(ata, atacbus, ata_cbuschannel_driver, ata_devclass, NULL, NULL);
349 MODULE_DEPEND(ata, ata, 1, 1, 1);
350