Commit | Line | Data |
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a3d4d643 GL |
1 | /* |
2 | * PS3 system bus driver. | |
3 | * | |
4 | * Copyright (C) 2006 Sony Computer Entertainment Inc. | |
5 | * Copyright 2006 Sony Corp. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; version 2 of the License. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/dma-mapping.h> | |
25 | #include <linux/err.h> | |
26 | ||
27 | #include <asm/udbg.h> | |
a3d4d643 | 28 | #include <asm/lv1call.h> |
e22ba7e3 | 29 | #include <asm/firmware.h> |
a3d4d643 | 30 | |
2a08ea69 GL |
31 | #include "platform.h" |
32 | ||
6bb5cf10 | 33 | static struct device ps3_system_bus = { |
aab0d375 | 34 | .init_name = "ps3_system", |
6bb5cf10 GL |
35 | }; |
36 | ||
37 | /* FIXME: need device usage counters! */ | |
38 | struct { | |
39 | struct mutex mutex; | |
40 | int sb_11; /* usb 0 */ | |
41 | int sb_12; /* usb 0 */ | |
42 | int gpu; | |
43 | } static usage_hack; | |
44 | ||
034e0ab5 GU |
45 | static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id, |
46 | u64 dev_id) | |
6bb5cf10 GL |
47 | { |
48 | return dev->bus_id == bus_id && dev->dev_id == dev_id; | |
49 | } | |
50 | ||
51 | static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev) | |
52 | { | |
53 | int result; | |
54 | ||
55 | BUG_ON(!dev->bus_id); | |
56 | mutex_lock(&usage_hack.mutex); | |
57 | ||
58 | if (ps3_is_device(dev, 1, 1)) { | |
59 | usage_hack.sb_11++; | |
60 | if (usage_hack.sb_11 > 1) { | |
61 | result = 0; | |
62 | goto done; | |
63 | } | |
64 | } | |
65 | ||
66 | if (ps3_is_device(dev, 1, 2)) { | |
67 | usage_hack.sb_12++; | |
68 | if (usage_hack.sb_12 > 1) { | |
69 | result = 0; | |
70 | goto done; | |
71 | } | |
72 | } | |
73 | ||
74 | result = lv1_open_device(dev->bus_id, dev->dev_id, 0); | |
75 | ||
76 | if (result) { | |
77 | pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__, | |
78 | __LINE__, ps3_result(result)); | |
79 | result = -EPERM; | |
80 | } | |
81 | ||
82 | done: | |
83 | mutex_unlock(&usage_hack.mutex); | |
84 | return result; | |
85 | } | |
86 | ||
87 | static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev) | |
88 | { | |
89 | int result; | |
90 | ||
91 | BUG_ON(!dev->bus_id); | |
92 | mutex_lock(&usage_hack.mutex); | |
93 | ||
94 | if (ps3_is_device(dev, 1, 1)) { | |
95 | usage_hack.sb_11--; | |
96 | if (usage_hack.sb_11) { | |
97 | result = 0; | |
98 | goto done; | |
99 | } | |
100 | } | |
101 | ||
102 | if (ps3_is_device(dev, 1, 2)) { | |
103 | usage_hack.sb_12--; | |
104 | if (usage_hack.sb_12) { | |
105 | result = 0; | |
106 | goto done; | |
107 | } | |
108 | } | |
109 | ||
110 | result = lv1_close_device(dev->bus_id, dev->dev_id); | |
111 | BUG_ON(result); | |
112 | ||
113 | done: | |
114 | mutex_unlock(&usage_hack.mutex); | |
115 | return result; | |
116 | } | |
117 | ||
118 | static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev) | |
119 | { | |
120 | int result; | |
121 | ||
122 | mutex_lock(&usage_hack.mutex); | |
123 | ||
124 | usage_hack.gpu++; | |
125 | if (usage_hack.gpu > 1) { | |
126 | result = 0; | |
127 | goto done; | |
128 | } | |
129 | ||
130 | result = lv1_gpu_open(0); | |
131 | ||
132 | if (result) { | |
133 | pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__, | |
134 | __LINE__, ps3_result(result)); | |
135 | result = -EPERM; | |
136 | } | |
137 | ||
138 | done: | |
139 | mutex_unlock(&usage_hack.mutex); | |
140 | return result; | |
141 | } | |
142 | ||
143 | static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev) | |
144 | { | |
145 | int result; | |
146 | ||
147 | mutex_lock(&usage_hack.mutex); | |
148 | ||
149 | usage_hack.gpu--; | |
150 | if (usage_hack.gpu) { | |
151 | result = 0; | |
152 | goto done; | |
153 | } | |
154 | ||
155 | result = lv1_gpu_close(); | |
156 | BUG_ON(result); | |
157 | ||
158 | done: | |
159 | mutex_unlock(&usage_hack.mutex); | |
160 | return result; | |
161 | } | |
162 | ||
163 | int ps3_open_hv_device(struct ps3_system_bus_device *dev) | |
164 | { | |
165 | BUG_ON(!dev); | |
166 | pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); | |
167 | ||
168 | switch (dev->match_id) { | |
169 | case PS3_MATCH_ID_EHCI: | |
170 | case PS3_MATCH_ID_OHCI: | |
171 | case PS3_MATCH_ID_GELIC: | |
172 | case PS3_MATCH_ID_STOR_DISK: | |
173 | case PS3_MATCH_ID_STOR_ROM: | |
174 | case PS3_MATCH_ID_STOR_FLASH: | |
175 | return ps3_open_hv_device_sb(dev); | |
176 | ||
177 | case PS3_MATCH_ID_SOUND: | |
46d01492 | 178 | case PS3_MATCH_ID_GPU: |
6bb5cf10 GL |
179 | return ps3_open_hv_device_gpu(dev); |
180 | ||
181 | case PS3_MATCH_ID_AV_SETTINGS: | |
182 | case PS3_MATCH_ID_SYSTEM_MANAGER: | |
183 | pr_debug("%s:%d: unsupported match_id: %u\n", __func__, | |
184 | __LINE__, dev->match_id); | |
034e0ab5 GU |
185 | pr_debug("%s:%d: bus_id: %lu\n", __func__, __LINE__, |
186 | dev->bus_id); | |
6bb5cf10 GL |
187 | BUG(); |
188 | return -EINVAL; | |
189 | ||
190 | default: | |
191 | break; | |
192 | } | |
193 | ||
194 | pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, | |
195 | dev->match_id); | |
196 | BUG(); | |
197 | return -ENODEV; | |
198 | } | |
199 | EXPORT_SYMBOL_GPL(ps3_open_hv_device); | |
200 | ||
201 | int ps3_close_hv_device(struct ps3_system_bus_device *dev) | |
202 | { | |
203 | BUG_ON(!dev); | |
204 | pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); | |
205 | ||
206 | switch (dev->match_id) { | |
207 | case PS3_MATCH_ID_EHCI: | |
208 | case PS3_MATCH_ID_OHCI: | |
209 | case PS3_MATCH_ID_GELIC: | |
210 | case PS3_MATCH_ID_STOR_DISK: | |
211 | case PS3_MATCH_ID_STOR_ROM: | |
212 | case PS3_MATCH_ID_STOR_FLASH: | |
213 | return ps3_close_hv_device_sb(dev); | |
214 | ||
215 | case PS3_MATCH_ID_SOUND: | |
46d01492 | 216 | case PS3_MATCH_ID_GPU: |
6bb5cf10 GL |
217 | return ps3_close_hv_device_gpu(dev); |
218 | ||
219 | case PS3_MATCH_ID_AV_SETTINGS: | |
220 | case PS3_MATCH_ID_SYSTEM_MANAGER: | |
221 | pr_debug("%s:%d: unsupported match_id: %u\n", __func__, | |
222 | __LINE__, dev->match_id); | |
034e0ab5 GU |
223 | pr_debug("%s:%d: bus_id: %lu\n", __func__, __LINE__, |
224 | dev->bus_id); | |
6bb5cf10 GL |
225 | BUG(); |
226 | return -EINVAL; | |
227 | ||
228 | default: | |
229 | break; | |
230 | } | |
231 | ||
232 | pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, | |
233 | dev->match_id); | |
234 | BUG(); | |
235 | return -ENODEV; | |
236 | } | |
237 | EXPORT_SYMBOL_GPL(ps3_close_hv_device); | |
238 | ||
a3d4d643 GL |
239 | #define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__) |
240 | static void _dump_mmio_region(const struct ps3_mmio_region* r, | |
241 | const char* func, int line) | |
242 | { | |
034e0ab5 | 243 | pr_debug("%s:%d: dev %lu:%lu\n", func, line, r->dev->bus_id, |
6bb5cf10 | 244 | r->dev->dev_id); |
a3d4d643 GL |
245 | pr_debug("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr); |
246 | pr_debug("%s:%d: len %lxh\n", func, line, r->len); | |
247 | pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr); | |
248 | } | |
249 | ||
6bb5cf10 | 250 | static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r) |
a3d4d643 GL |
251 | { |
252 | int result; | |
253 | ||
6bb5cf10 | 254 | result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id, |
a3d4d643 GL |
255 | r->bus_addr, r->len, r->page_size, &r->lpar_addr); |
256 | ||
257 | if (result) { | |
258 | pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n", | |
259 | __func__, __LINE__, ps3_result(result)); | |
43d80439 | 260 | r->lpar_addr = 0; |
a3d4d643 GL |
261 | } |
262 | ||
263 | dump_mmio_region(r); | |
264 | return result; | |
265 | } | |
6bb5cf10 GL |
266 | |
267 | static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r) | |
268 | { | |
269 | /* device specific; do nothing currently */ | |
270 | return 0; | |
271 | } | |
272 | ||
273 | int ps3_mmio_region_create(struct ps3_mmio_region *r) | |
274 | { | |
275 | return r->mmio_ops->create(r); | |
276 | } | |
9288f5c3 | 277 | EXPORT_SYMBOL_GPL(ps3_mmio_region_create); |
a3d4d643 | 278 | |
6bb5cf10 | 279 | static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r) |
a3d4d643 GL |
280 | { |
281 | int result; | |
282 | ||
6bb5cf10 GL |
283 | dump_mmio_region(r); |
284 | ; | |
285 | result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id, | |
43d80439 | 286 | r->lpar_addr); |
a3d4d643 GL |
287 | |
288 | if (result) | |
289 | pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n", | |
290 | __func__, __LINE__, ps3_result(result)); | |
291 | ||
43d80439 | 292 | r->lpar_addr = 0; |
a3d4d643 GL |
293 | return result; |
294 | } | |
6bb5cf10 GL |
295 | |
296 | static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r) | |
297 | { | |
298 | /* device specific; do nothing currently */ | |
299 | return 0; | |
300 | } | |
301 | ||
302 | ||
303 | int ps3_free_mmio_region(struct ps3_mmio_region *r) | |
304 | { | |
305 | return r->mmio_ops->free(r); | |
306 | } | |
307 | ||
9288f5c3 | 308 | EXPORT_SYMBOL_GPL(ps3_free_mmio_region); |
a3d4d643 | 309 | |
6bb5cf10 GL |
310 | static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = { |
311 | .create = ps3_sb_mmio_region_create, | |
312 | .free = ps3_sb_free_mmio_region | |
313 | }; | |
314 | ||
315 | static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = { | |
316 | .create = ps3_ioc0_mmio_region_create, | |
317 | .free = ps3_ioc0_free_mmio_region | |
318 | }; | |
319 | ||
320 | int ps3_mmio_region_init(struct ps3_system_bus_device *dev, | |
321 | struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len, | |
322 | enum ps3_mmio_page_size page_size) | |
323 | { | |
324 | r->dev = dev; | |
325 | r->bus_addr = bus_addr; | |
326 | r->len = len; | |
327 | r->page_size = page_size; | |
328 | switch (dev->dev_type) { | |
329 | case PS3_DEVICE_TYPE_SB: | |
330 | r->mmio_ops = &ps3_mmio_sb_region_ops; | |
331 | break; | |
332 | case PS3_DEVICE_TYPE_IOC0: | |
333 | r->mmio_ops = &ps3_mmio_ioc0_region_ops; | |
334 | break; | |
335 | default: | |
336 | BUG(); | |
337 | return -EINVAL; | |
338 | } | |
339 | return 0; | |
340 | } | |
341 | EXPORT_SYMBOL_GPL(ps3_mmio_region_init); | |
342 | ||
a3d4d643 GL |
343 | static int ps3_system_bus_match(struct device *_dev, |
344 | struct device_driver *_drv) | |
345 | { | |
346 | int result; | |
6bb5cf10 GL |
347 | struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv); |
348 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
a3d4d643 | 349 | |
059e4938 MM |
350 | if (!dev->match_sub_id) |
351 | result = dev->match_id == drv->match_id; | |
352 | else | |
353 | result = dev->match_sub_id == drv->match_sub_id && | |
354 | dev->match_id == drv->match_id; | |
a3d4d643 | 355 | |
88b90c96 | 356 | if (result) |
059e4938 MM |
357 | pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n", |
358 | __func__, __LINE__, | |
aab0d375 | 359 | dev->match_id, dev->match_sub_id, dev_name(&dev->core), |
059e4938 | 360 | drv->match_id, drv->match_sub_id, drv->core.name); |
88b90c96 | 361 | else |
059e4938 MM |
362 | pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n", |
363 | __func__, __LINE__, | |
aab0d375 | 364 | dev->match_id, dev->match_sub_id, dev_name(&dev->core), |
059e4938 MM |
365 | drv->match_id, drv->match_sub_id, drv->core.name); |
366 | ||
a3d4d643 GL |
367 | return result; |
368 | } | |
369 | ||
370 | static int ps3_system_bus_probe(struct device *_dev) | |
371 | { | |
6bb5cf10 GL |
372 | int result = 0; |
373 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
374 | struct ps3_system_bus_driver *drv; | |
a3d4d643 | 375 | |
6bb5cf10 | 376 | BUG_ON(!dev); |
88b90c96 | 377 | pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); |
a3d4d643 | 378 | |
6bb5cf10 | 379 | drv = ps3_system_bus_dev_to_system_bus_drv(dev); |
a3d4d643 GL |
380 | BUG_ON(!drv); |
381 | ||
382 | if (drv->probe) | |
383 | result = drv->probe(dev); | |
384 | else | |
88b90c96 | 385 | pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__, |
aab0d375 | 386 | dev_name(&dev->core)); |
a3d4d643 | 387 | |
aab0d375 | 388 | pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); |
a3d4d643 GL |
389 | return result; |
390 | } | |
391 | ||
392 | static int ps3_system_bus_remove(struct device *_dev) | |
393 | { | |
6bb5cf10 GL |
394 | int result = 0; |
395 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
396 | struct ps3_system_bus_driver *drv; | |
397 | ||
398 | BUG_ON(!dev); | |
88b90c96 | 399 | pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); |
6bb5cf10 GL |
400 | |
401 | drv = ps3_system_bus_dev_to_system_bus_drv(dev); | |
402 | BUG_ON(!drv); | |
a3d4d643 GL |
403 | |
404 | if (drv->remove) | |
6bb5cf10 | 405 | result = drv->remove(dev); |
a3d4d643 | 406 | else |
6bb5cf10 GL |
407 | dev_dbg(&dev->core, "%s:%d %s: no remove method\n", |
408 | __func__, __LINE__, drv->core.name); | |
409 | ||
aab0d375 | 410 | pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); |
6bb5cf10 GL |
411 | return result; |
412 | } | |
a3d4d643 | 413 | |
6bb5cf10 GL |
414 | static void ps3_system_bus_shutdown(struct device *_dev) |
415 | { | |
416 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
417 | struct ps3_system_bus_driver *drv; | |
a3d4d643 | 418 | |
6bb5cf10 GL |
419 | BUG_ON(!dev); |
420 | ||
421 | dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, | |
422 | dev->match_id); | |
423 | ||
424 | if (!dev->core.driver) { | |
425 | dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, | |
426 | __LINE__); | |
427 | return; | |
428 | } | |
429 | ||
430 | drv = ps3_system_bus_dev_to_system_bus_drv(dev); | |
431 | ||
432 | BUG_ON(!drv); | |
433 | ||
434 | dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__, | |
aab0d375 | 435 | dev_name(&dev->core), drv->core.name); |
6bb5cf10 GL |
436 | |
437 | if (drv->shutdown) | |
438 | drv->shutdown(dev); | |
439 | else if (drv->remove) { | |
440 | dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n", | |
441 | __func__, __LINE__, drv->core.name); | |
442 | drv->remove(dev); | |
443 | } else { | |
444 | dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n", | |
445 | __func__, __LINE__, drv->core.name); | |
446 | BUG(); | |
447 | } | |
448 | ||
449 | dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); | |
a3d4d643 GL |
450 | } |
451 | ||
7eff2e7a | 452 | static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) |
688b3378 DW |
453 | { |
454 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
688b3378 | 455 | |
46d01492 GU |
456 | if (add_uevent_var(env, "MODALIAS=ps3:%d:%d", dev->match_id, |
457 | dev->match_sub_id)) | |
688b3378 | 458 | return -ENOMEM; |
688b3378 DW |
459 | return 0; |
460 | } | |
461 | ||
6758555d DW |
462 | static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, |
463 | char *buf) | |
464 | { | |
465 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
46d01492 GU |
466 | int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id, |
467 | dev->match_sub_id); | |
6758555d DW |
468 | |
469 | return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; | |
470 | } | |
471 | ||
472 | static struct device_attribute ps3_system_bus_dev_attrs[] = { | |
473 | __ATTR_RO(modalias), | |
474 | __ATTR_NULL, | |
475 | }; | |
476 | ||
a3d4d643 | 477 | struct bus_type ps3_system_bus_type = { |
2a08ea69 | 478 | .name = "ps3_system_bus", |
a3d4d643 | 479 | .match = ps3_system_bus_match, |
688b3378 | 480 | .uevent = ps3_system_bus_uevent, |
a3d4d643 GL |
481 | .probe = ps3_system_bus_probe, |
482 | .remove = ps3_system_bus_remove, | |
6bb5cf10 | 483 | .shutdown = ps3_system_bus_shutdown, |
6758555d | 484 | .dev_attrs = ps3_system_bus_dev_attrs, |
a3d4d643 GL |
485 | }; |
486 | ||
6bb5cf10 | 487 | static int __init ps3_system_bus_init(void) |
a3d4d643 GL |
488 | { |
489 | int result; | |
490 | ||
e22ba7e3 | 491 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
ef596c69 | 492 | return -ENODEV; |
e22ba7e3 | 493 | |
6bb5cf10 GL |
494 | pr_debug(" -> %s:%d\n", __func__, __LINE__); |
495 | ||
496 | mutex_init(&usage_hack.mutex); | |
497 | ||
498 | result = device_register(&ps3_system_bus); | |
499 | BUG_ON(result); | |
500 | ||
a3d4d643 GL |
501 | result = bus_register(&ps3_system_bus_type); |
502 | BUG_ON(result); | |
6bb5cf10 GL |
503 | |
504 | pr_debug(" <- %s:%d\n", __func__, __LINE__); | |
a3d4d643 GL |
505 | return result; |
506 | } | |
507 | ||
508 | core_initcall(ps3_system_bus_init); | |
509 | ||
510 | /* Allocates a contiguous real buffer and creates mappings over it. | |
511 | * Returns the virtual address of the buffer and sets dma_handle | |
512 | * to the dma address (mapping) of the first page. | |
513 | */ | |
a3d4d643 | 514 | static void * ps3_alloc_coherent(struct device *_dev, size_t size, |
6bb5cf10 | 515 | dma_addr_t *dma_handle, gfp_t flag) |
a3d4d643 GL |
516 | { |
517 | int result; | |
6bb5cf10 | 518 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
519 | unsigned long virt_addr; |
520 | ||
a3d4d643 GL |
521 | flag &= ~(__GFP_DMA | __GFP_HIGHMEM); |
522 | flag |= __GFP_ZERO; | |
523 | ||
524 | virt_addr = __get_free_pages(flag, get_order(size)); | |
525 | ||
526 | if (!virt_addr) { | |
527 | pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); | |
528 | goto clean_none; | |
529 | } | |
530 | ||
6bb5cf10 GL |
531 | result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, |
532 | IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M); | |
a3d4d643 GL |
533 | |
534 | if (result) { | |
535 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
536 | __func__, __LINE__, result); | |
537 | BUG_ON("check region type"); | |
538 | goto clean_alloc; | |
539 | } | |
540 | ||
541 | return (void*)virt_addr; | |
542 | ||
543 | clean_alloc: | |
544 | free_pages(virt_addr, get_order(size)); | |
545 | clean_none: | |
546 | dma_handle = NULL; | |
547 | return NULL; | |
548 | } | |
549 | ||
550 | static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, | |
551 | dma_addr_t dma_handle) | |
552 | { | |
6bb5cf10 | 553 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
554 | |
555 | ps3_dma_unmap(dev->d_region, dma_handle, size); | |
556 | free_pages((unsigned long)vaddr, get_order(size)); | |
557 | } | |
558 | ||
559 | /* Creates TCEs for a user provided buffer. The user buffer must be | |
f9226d57 MN |
560 | * contiguous real kernel storage (not vmalloc). The address passed here |
561 | * comprises a page address and offset into that page. The dma_addr_t | |
562 | * returned will point to the same byte within the page as was passed in. | |
a3d4d643 GL |
563 | */ |
564 | ||
f9226d57 MN |
565 | static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, |
566 | unsigned long offset, size_t size, enum dma_data_direction direction, | |
567 | struct dma_attrs *attrs) | |
a3d4d643 | 568 | { |
6bb5cf10 | 569 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
570 | int result; |
571 | unsigned long bus_addr; | |
f9226d57 | 572 | void *ptr = page_address(page) + offset; |
a3d4d643 GL |
573 | |
574 | result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, | |
6bb5cf10 GL |
575 | &bus_addr, |
576 | IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M); | |
a3d4d643 GL |
577 | |
578 | if (result) { | |
579 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
580 | __func__, __LINE__, result); | |
581 | } | |
582 | ||
583 | return bus_addr; | |
584 | } | |
585 | ||
f9226d57 MN |
586 | static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, |
587 | unsigned long offset, size_t size, | |
588 | enum dma_data_direction direction, | |
589 | struct dma_attrs *attrs) | |
6bb5cf10 GL |
590 | { |
591 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
592 | int result; | |
593 | unsigned long bus_addr; | |
594 | u64 iopte_flag; | |
f9226d57 | 595 | void *ptr = page_address(page) + offset; |
6bb5cf10 GL |
596 | |
597 | iopte_flag = IOPTE_M; | |
598 | switch (direction) { | |
599 | case DMA_BIDIRECTIONAL: | |
600 | iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW; | |
601 | break; | |
602 | case DMA_TO_DEVICE: | |
603 | iopte_flag |= IOPTE_PP_R | IOPTE_SO_R; | |
604 | break; | |
605 | case DMA_FROM_DEVICE: | |
606 | iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW; | |
607 | break; | |
608 | default: | |
609 | /* not happned */ | |
610 | BUG(); | |
611 | }; | |
612 | result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, | |
613 | &bus_addr, iopte_flag); | |
614 | ||
615 | if (result) { | |
616 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
617 | __func__, __LINE__, result); | |
618 | } | |
619 | return bus_addr; | |
620 | } | |
621 | ||
f9226d57 | 622 | static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, |
3affedc4 | 623 | size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) |
a3d4d643 | 624 | { |
6bb5cf10 | 625 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
626 | int result; |
627 | ||
628 | result = ps3_dma_unmap(dev->d_region, dma_addr, size); | |
629 | ||
630 | if (result) { | |
631 | pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", | |
632 | __func__, __LINE__, result); | |
633 | } | |
634 | } | |
635 | ||
d1ed455e | 636 | static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, |
3affedc4 | 637 | int nents, enum dma_data_direction direction, struct dma_attrs *attrs) |
a3d4d643 GL |
638 | { |
639 | #if defined(CONFIG_PS3_DYNAMIC_DMA) | |
640 | BUG_ON("do"); | |
35063bb2 GL |
641 | return -EPERM; |
642 | #else | |
6bb5cf10 | 643 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
d1ed455e | 644 | struct scatterlist *sg; |
435e0b2b SR |
645 | int i; |
646 | ||
d1ed455e | 647 | for_each_sg(sgl, sg, nents, i) { |
58b053e4 JA |
648 | int result = ps3_dma_map(dev->d_region, sg_phys(sg), |
649 | sg->length, &sg->dma_address, 0); | |
35063bb2 GL |
650 | |
651 | if (result) { | |
652 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
653 | __func__, __LINE__, result); | |
654 | return -EINVAL; | |
655 | } | |
656 | ||
657 | sg->dma_length = sg->length; | |
658 | } | |
659 | ||
660 | return nents; | |
a3d4d643 | 661 | #endif |
a3d4d643 GL |
662 | } |
663 | ||
6bb5cf10 GL |
664 | static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, |
665 | int nents, | |
3affedc4 MN |
666 | enum dma_data_direction direction, |
667 | struct dma_attrs *attrs) | |
6bb5cf10 GL |
668 | { |
669 | BUG(); | |
670 | return 0; | |
671 | } | |
672 | ||
673 | static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, | |
3affedc4 | 674 | int nents, enum dma_data_direction direction, struct dma_attrs *attrs) |
a3d4d643 GL |
675 | { |
676 | #if defined(CONFIG_PS3_DYNAMIC_DMA) | |
677 | BUG_ON("do"); | |
678 | #endif | |
679 | } | |
680 | ||
6bb5cf10 | 681 | static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, |
3affedc4 MN |
682 | int nents, enum dma_data_direction direction, |
683 | struct dma_attrs *attrs) | |
6bb5cf10 GL |
684 | { |
685 | BUG(); | |
686 | } | |
687 | ||
a3d4d643 GL |
688 | static int ps3_dma_supported(struct device *_dev, u64 mask) |
689 | { | |
35063bb2 | 690 | return mask >= DMA_32BIT_MASK; |
a3d4d643 GL |
691 | } |
692 | ||
6bb5cf10 GL |
693 | static struct dma_mapping_ops ps3_sb_dma_ops = { |
694 | .alloc_coherent = ps3_alloc_coherent, | |
695 | .free_coherent = ps3_free_coherent, | |
6bb5cf10 GL |
696 | .map_sg = ps3_sb_map_sg, |
697 | .unmap_sg = ps3_sb_unmap_sg, | |
f9226d57 MN |
698 | .dma_supported = ps3_dma_supported, |
699 | .map_page = ps3_sb_map_page, | |
700 | .unmap_page = ps3_unmap_page, | |
6bb5cf10 GL |
701 | }; |
702 | ||
703 | static struct dma_mapping_ops ps3_ioc0_dma_ops = { | |
a3d4d643 GL |
704 | .alloc_coherent = ps3_alloc_coherent, |
705 | .free_coherent = ps3_free_coherent, | |
6bb5cf10 GL |
706 | .map_sg = ps3_ioc0_map_sg, |
707 | .unmap_sg = ps3_ioc0_unmap_sg, | |
f9226d57 MN |
708 | .dma_supported = ps3_dma_supported, |
709 | .map_page = ps3_ioc0_map_page, | |
710 | .unmap_page = ps3_unmap_page, | |
a3d4d643 GL |
711 | }; |
712 | ||
713 | /** | |
714 | * ps3_system_bus_release_device - remove a device from the system bus | |
715 | */ | |
716 | ||
717 | static void ps3_system_bus_release_device(struct device *_dev) | |
718 | { | |
6bb5cf10 | 719 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
720 | kfree(dev); |
721 | } | |
722 | ||
723 | /** | |
724 | * ps3_system_bus_device_register - add a device to the system bus | |
725 | * | |
726 | * ps3_system_bus_device_register() expects the dev object to be allocated | |
727 | * dynamically by the caller. The system bus takes ownership of the dev | |
728 | * object and frees the object in ps3_system_bus_release_device(). | |
729 | */ | |
730 | ||
731 | int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) | |
732 | { | |
733 | int result; | |
6bb5cf10 GL |
734 | static unsigned int dev_ioc0_count; |
735 | static unsigned int dev_sb_count; | |
736 | static unsigned int dev_vuart_count; | |
ed757002 | 737 | static unsigned int dev_lpm_count; |
a3d4d643 | 738 | |
6bb5cf10 GL |
739 | if (!dev->core.parent) |
740 | dev->core.parent = &ps3_system_bus; | |
a3d4d643 GL |
741 | dev->core.bus = &ps3_system_bus_type; |
742 | dev->core.release = ps3_system_bus_release_device; | |
743 | ||
6bb5cf10 GL |
744 | switch (dev->dev_type) { |
745 | case PS3_DEVICE_TYPE_IOC0: | |
746 | dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops; | |
aab0d375 | 747 | dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count); |
6bb5cf10 GL |
748 | break; |
749 | case PS3_DEVICE_TYPE_SB: | |
750 | dev->core.archdata.dma_ops = &ps3_sb_dma_ops; | |
aab0d375 | 751 | dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count); |
6bb5cf10 GL |
752 | |
753 | break; | |
754 | case PS3_DEVICE_TYPE_VUART: | |
aab0d375 | 755 | dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count); |
6bb5cf10 | 756 | break; |
ed757002 | 757 | case PS3_DEVICE_TYPE_LPM: |
aab0d375 | 758 | dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count); |
ed757002 | 759 | break; |
6bb5cf10 GL |
760 | default: |
761 | BUG(); | |
762 | }; | |
763 | ||
a3d4d643 | 764 | dev->core.archdata.of_node = NULL; |
8fae0353 | 765 | set_dev_node(&dev->core, 0); |
a3d4d643 | 766 | |
aab0d375 | 767 | pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core)); |
a3d4d643 GL |
768 | |
769 | result = device_register(&dev->core); | |
770 | return result; | |
771 | } | |
772 | ||
773 | EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); | |
774 | ||
775 | int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) | |
776 | { | |
777 | int result; | |
778 | ||
6bb5cf10 GL |
779 | pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
780 | ||
781 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
782 | return -ENODEV; | |
783 | ||
a3d4d643 GL |
784 | drv->core.bus = &ps3_system_bus_type; |
785 | ||
786 | result = driver_register(&drv->core); | |
6bb5cf10 | 787 | pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
a3d4d643 GL |
788 | return result; |
789 | } | |
790 | ||
791 | EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); | |
792 | ||
793 | void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) | |
794 | { | |
6bb5cf10 | 795 | pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
a3d4d643 | 796 | driver_unregister(&drv->core); |
6bb5cf10 | 797 | pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
a3d4d643 GL |
798 | } |
799 | ||
800 | EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); |