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 GL |
33 | static struct device ps3_system_bus = { |
34 | .bus_id = "ps3_system", | |
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 | ||
45 | static int ps3_is_device(struct ps3_system_bus_device *dev, | |
46 | unsigned int bus_id, unsigned int dev_id) | |
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: | |
178 | case PS3_MATCH_ID_GRAPHICS: | |
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); | |
185 | pr_debug("%s:%d: bus_id: %u\n", __func__, | |
186 | __LINE__, dev->bus_id); | |
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: | |
216 | case PS3_MATCH_ID_GRAPHICS: | |
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); | |
223 | pr_debug("%s:%d: bus_id: %u\n", __func__, | |
224 | __LINE__, dev->bus_id); | |
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 | { | |
6bb5cf10 GL |
243 | pr_debug("%s:%d: dev %u:%u\n", func, line, r->dev->bus_id, |
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 GL |
349 | |
350 | result = dev->match_id == drv->match_id; | |
351 | ||
352 | pr_info("%s:%d: dev=%u(%s), drv=%u(%s): %s\n", __func__, __LINE__, | |
353 | dev->match_id, dev->core.bus_id, drv->match_id, drv->core.name, | |
354 | (result ? "match" : "miss")); | |
355 | return result; | |
356 | } | |
357 | ||
358 | static int ps3_system_bus_probe(struct device *_dev) | |
359 | { | |
6bb5cf10 GL |
360 | int result = 0; |
361 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
362 | struct ps3_system_bus_driver *drv; | |
a3d4d643 | 363 | |
6bb5cf10 GL |
364 | BUG_ON(!dev); |
365 | pr_info(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); | |
a3d4d643 | 366 | |
6bb5cf10 | 367 | drv = ps3_system_bus_dev_to_system_bus_drv(dev); |
a3d4d643 GL |
368 | BUG_ON(!drv); |
369 | ||
370 | if (drv->probe) | |
371 | result = drv->probe(dev); | |
372 | else | |
373 | pr_info("%s:%d: %s no probe method\n", __func__, __LINE__, | |
374 | dev->core.bus_id); | |
375 | ||
6bb5cf10 | 376 | pr_info(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id); |
a3d4d643 GL |
377 | return result; |
378 | } | |
379 | ||
380 | static int ps3_system_bus_remove(struct device *_dev) | |
381 | { | |
6bb5cf10 GL |
382 | int result = 0; |
383 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
384 | struct ps3_system_bus_driver *drv; | |
385 | ||
386 | BUG_ON(!dev); | |
387 | pr_info(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); | |
388 | ||
389 | drv = ps3_system_bus_dev_to_system_bus_drv(dev); | |
390 | BUG_ON(!drv); | |
a3d4d643 GL |
391 | |
392 | if (drv->remove) | |
6bb5cf10 | 393 | result = drv->remove(dev); |
a3d4d643 | 394 | else |
6bb5cf10 GL |
395 | dev_dbg(&dev->core, "%s:%d %s: no remove method\n", |
396 | __func__, __LINE__, drv->core.name); | |
397 | ||
398 | pr_info(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id); | |
399 | return result; | |
400 | } | |
a3d4d643 | 401 | |
6bb5cf10 GL |
402 | static void ps3_system_bus_shutdown(struct device *_dev) |
403 | { | |
404 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
405 | struct ps3_system_bus_driver *drv; | |
a3d4d643 | 406 | |
6bb5cf10 GL |
407 | BUG_ON(!dev); |
408 | ||
409 | dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, | |
410 | dev->match_id); | |
411 | ||
412 | if (!dev->core.driver) { | |
413 | dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, | |
414 | __LINE__); | |
415 | return; | |
416 | } | |
417 | ||
418 | drv = ps3_system_bus_dev_to_system_bus_drv(dev); | |
419 | ||
420 | BUG_ON(!drv); | |
421 | ||
422 | dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__, | |
423 | dev->core.bus_id, drv->core.name); | |
424 | ||
425 | if (drv->shutdown) | |
426 | drv->shutdown(dev); | |
427 | else if (drv->remove) { | |
428 | dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n", | |
429 | __func__, __LINE__, drv->core.name); | |
430 | drv->remove(dev); | |
431 | } else { | |
432 | dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n", | |
433 | __func__, __LINE__, drv->core.name); | |
434 | BUG(); | |
435 | } | |
436 | ||
437 | dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); | |
a3d4d643 GL |
438 | } |
439 | ||
688b3378 DW |
440 | static int ps3_system_bus_uevent(struct device *_dev, char **envp, |
441 | int num_envp, char *buffer, int buffer_size) | |
442 | { | |
443 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
444 | int i = 0, length = 0; | |
445 | ||
446 | if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, | |
447 | &length, "MODALIAS=ps3:%d", | |
448 | dev->match_id)) | |
449 | return -ENOMEM; | |
450 | ||
451 | envp[i] = NULL; | |
452 | return 0; | |
453 | } | |
454 | ||
6758555d DW |
455 | static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, |
456 | char *buf) | |
457 | { | |
458 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
459 | int len = snprintf(buf, PAGE_SIZE, "ps3:%d\n", dev->match_id); | |
460 | ||
461 | return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; | |
462 | } | |
463 | ||
464 | static struct device_attribute ps3_system_bus_dev_attrs[] = { | |
465 | __ATTR_RO(modalias), | |
466 | __ATTR_NULL, | |
467 | }; | |
468 | ||
a3d4d643 | 469 | struct bus_type ps3_system_bus_type = { |
2a08ea69 | 470 | .name = "ps3_system_bus", |
a3d4d643 | 471 | .match = ps3_system_bus_match, |
688b3378 | 472 | .uevent = ps3_system_bus_uevent, |
a3d4d643 GL |
473 | .probe = ps3_system_bus_probe, |
474 | .remove = ps3_system_bus_remove, | |
6bb5cf10 | 475 | .shutdown = ps3_system_bus_shutdown, |
6758555d | 476 | .dev_attrs = ps3_system_bus_dev_attrs, |
a3d4d643 GL |
477 | }; |
478 | ||
6bb5cf10 | 479 | static int __init ps3_system_bus_init(void) |
a3d4d643 GL |
480 | { |
481 | int result; | |
482 | ||
e22ba7e3 | 483 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
ef596c69 | 484 | return -ENODEV; |
e22ba7e3 | 485 | |
6bb5cf10 GL |
486 | pr_debug(" -> %s:%d\n", __func__, __LINE__); |
487 | ||
488 | mutex_init(&usage_hack.mutex); | |
489 | ||
490 | result = device_register(&ps3_system_bus); | |
491 | BUG_ON(result); | |
492 | ||
a3d4d643 GL |
493 | result = bus_register(&ps3_system_bus_type); |
494 | BUG_ON(result); | |
6bb5cf10 GL |
495 | |
496 | pr_debug(" <- %s:%d\n", __func__, __LINE__); | |
a3d4d643 GL |
497 | return result; |
498 | } | |
499 | ||
500 | core_initcall(ps3_system_bus_init); | |
501 | ||
502 | /* Allocates a contiguous real buffer and creates mappings over it. | |
503 | * Returns the virtual address of the buffer and sets dma_handle | |
504 | * to the dma address (mapping) of the first page. | |
505 | */ | |
a3d4d643 | 506 | static void * ps3_alloc_coherent(struct device *_dev, size_t size, |
6bb5cf10 | 507 | dma_addr_t *dma_handle, gfp_t flag) |
a3d4d643 GL |
508 | { |
509 | int result; | |
6bb5cf10 | 510 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
511 | unsigned long virt_addr; |
512 | ||
a3d4d643 GL |
513 | flag &= ~(__GFP_DMA | __GFP_HIGHMEM); |
514 | flag |= __GFP_ZERO; | |
515 | ||
516 | virt_addr = __get_free_pages(flag, get_order(size)); | |
517 | ||
518 | if (!virt_addr) { | |
519 | pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); | |
520 | goto clean_none; | |
521 | } | |
522 | ||
6bb5cf10 GL |
523 | result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, |
524 | IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M); | |
a3d4d643 GL |
525 | |
526 | if (result) { | |
527 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
528 | __func__, __LINE__, result); | |
529 | BUG_ON("check region type"); | |
530 | goto clean_alloc; | |
531 | } | |
532 | ||
533 | return (void*)virt_addr; | |
534 | ||
535 | clean_alloc: | |
536 | free_pages(virt_addr, get_order(size)); | |
537 | clean_none: | |
538 | dma_handle = NULL; | |
539 | return NULL; | |
540 | } | |
541 | ||
542 | static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, | |
543 | dma_addr_t dma_handle) | |
544 | { | |
6bb5cf10 | 545 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
546 | |
547 | ps3_dma_unmap(dev->d_region, dma_handle, size); | |
548 | free_pages((unsigned long)vaddr, get_order(size)); | |
549 | } | |
550 | ||
551 | /* Creates TCEs for a user provided buffer. The user buffer must be | |
552 | * contiguous real kernel storage (not vmalloc). The address of the buffer | |
553 | * passed here is the kernel (virtual) address of the buffer. The buffer | |
554 | * need not be page aligned, the dma_addr_t returned will point to the same | |
555 | * byte within the page as vaddr. | |
556 | */ | |
557 | ||
6bb5cf10 | 558 | static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size, |
a3d4d643 GL |
559 | enum dma_data_direction direction) |
560 | { | |
6bb5cf10 | 561 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
562 | int result; |
563 | unsigned long bus_addr; | |
564 | ||
565 | result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, | |
6bb5cf10 GL |
566 | &bus_addr, |
567 | IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M); | |
a3d4d643 GL |
568 | |
569 | if (result) { | |
570 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
571 | __func__, __LINE__, result); | |
572 | } | |
573 | ||
574 | return bus_addr; | |
575 | } | |
576 | ||
6bb5cf10 GL |
577 | static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr, |
578 | size_t size, | |
579 | enum dma_data_direction direction) | |
580 | { | |
581 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); | |
582 | int result; | |
583 | unsigned long bus_addr; | |
584 | u64 iopte_flag; | |
585 | ||
586 | iopte_flag = IOPTE_M; | |
587 | switch (direction) { | |
588 | case DMA_BIDIRECTIONAL: | |
589 | iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW; | |
590 | break; | |
591 | case DMA_TO_DEVICE: | |
592 | iopte_flag |= IOPTE_PP_R | IOPTE_SO_R; | |
593 | break; | |
594 | case DMA_FROM_DEVICE: | |
595 | iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW; | |
596 | break; | |
597 | default: | |
598 | /* not happned */ | |
599 | BUG(); | |
600 | }; | |
601 | result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, | |
602 | &bus_addr, iopte_flag); | |
603 | ||
604 | if (result) { | |
605 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
606 | __func__, __LINE__, result); | |
607 | } | |
608 | return bus_addr; | |
609 | } | |
610 | ||
a3d4d643 GL |
611 | static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr, |
612 | size_t size, enum dma_data_direction direction) | |
613 | { | |
6bb5cf10 | 614 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
615 | int result; |
616 | ||
617 | result = ps3_dma_unmap(dev->d_region, dma_addr, size); | |
618 | ||
619 | if (result) { | |
620 | pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", | |
621 | __func__, __LINE__, result); | |
622 | } | |
623 | } | |
624 | ||
6bb5cf10 | 625 | static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sg, int nents, |
a3d4d643 GL |
626 | enum dma_data_direction direction) |
627 | { | |
628 | #if defined(CONFIG_PS3_DYNAMIC_DMA) | |
629 | BUG_ON("do"); | |
35063bb2 GL |
630 | return -EPERM; |
631 | #else | |
6bb5cf10 | 632 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
435e0b2b SR |
633 | int i; |
634 | ||
35063bb2 GL |
635 | for (i = 0; i < nents; i++, sg++) { |
636 | int result = ps3_dma_map(dev->d_region, | |
637 | page_to_phys(sg->page) + sg->offset, sg->length, | |
6bb5cf10 | 638 | &sg->dma_address, 0); |
35063bb2 GL |
639 | |
640 | if (result) { | |
641 | pr_debug("%s:%d: ps3_dma_map failed (%d)\n", | |
642 | __func__, __LINE__, result); | |
643 | return -EINVAL; | |
644 | } | |
645 | ||
646 | sg->dma_length = sg->length; | |
647 | } | |
648 | ||
649 | return nents; | |
a3d4d643 | 650 | #endif |
a3d4d643 GL |
651 | } |
652 | ||
6bb5cf10 GL |
653 | static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, |
654 | int nents, | |
655 | enum dma_data_direction direction) | |
656 | { | |
657 | BUG(); | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, | |
a3d4d643 GL |
662 | int nents, enum dma_data_direction direction) |
663 | { | |
664 | #if defined(CONFIG_PS3_DYNAMIC_DMA) | |
665 | BUG_ON("do"); | |
666 | #endif | |
667 | } | |
668 | ||
6bb5cf10 GL |
669 | static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, |
670 | int nents, enum dma_data_direction direction) | |
671 | { | |
672 | BUG(); | |
673 | } | |
674 | ||
a3d4d643 GL |
675 | static int ps3_dma_supported(struct device *_dev, u64 mask) |
676 | { | |
35063bb2 | 677 | return mask >= DMA_32BIT_MASK; |
a3d4d643 GL |
678 | } |
679 | ||
6bb5cf10 GL |
680 | static struct dma_mapping_ops ps3_sb_dma_ops = { |
681 | .alloc_coherent = ps3_alloc_coherent, | |
682 | .free_coherent = ps3_free_coherent, | |
683 | .map_single = ps3_sb_map_single, | |
684 | .unmap_single = ps3_unmap_single, | |
685 | .map_sg = ps3_sb_map_sg, | |
686 | .unmap_sg = ps3_sb_unmap_sg, | |
687 | .dma_supported = ps3_dma_supported | |
688 | }; | |
689 | ||
690 | static struct dma_mapping_ops ps3_ioc0_dma_ops = { | |
a3d4d643 GL |
691 | .alloc_coherent = ps3_alloc_coherent, |
692 | .free_coherent = ps3_free_coherent, | |
6bb5cf10 | 693 | .map_single = ps3_ioc0_map_single, |
a3d4d643 | 694 | .unmap_single = ps3_unmap_single, |
6bb5cf10 GL |
695 | .map_sg = ps3_ioc0_map_sg, |
696 | .unmap_sg = ps3_ioc0_unmap_sg, | |
a3d4d643 GL |
697 | .dma_supported = ps3_dma_supported |
698 | }; | |
699 | ||
700 | /** | |
701 | * ps3_system_bus_release_device - remove a device from the system bus | |
702 | */ | |
703 | ||
704 | static void ps3_system_bus_release_device(struct device *_dev) | |
705 | { | |
6bb5cf10 | 706 | struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
a3d4d643 GL |
707 | kfree(dev); |
708 | } | |
709 | ||
710 | /** | |
711 | * ps3_system_bus_device_register - add a device to the system bus | |
712 | * | |
713 | * ps3_system_bus_device_register() expects the dev object to be allocated | |
714 | * dynamically by the caller. The system bus takes ownership of the dev | |
715 | * object and frees the object in ps3_system_bus_release_device(). | |
716 | */ | |
717 | ||
718 | int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) | |
719 | { | |
720 | int result; | |
6bb5cf10 GL |
721 | static unsigned int dev_ioc0_count; |
722 | static unsigned int dev_sb_count; | |
723 | static unsigned int dev_vuart_count; | |
a3d4d643 | 724 | |
6bb5cf10 GL |
725 | if (!dev->core.parent) |
726 | dev->core.parent = &ps3_system_bus; | |
a3d4d643 GL |
727 | dev->core.bus = &ps3_system_bus_type; |
728 | dev->core.release = ps3_system_bus_release_device; | |
729 | ||
6bb5cf10 GL |
730 | switch (dev->dev_type) { |
731 | case PS3_DEVICE_TYPE_IOC0: | |
732 | dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops; | |
733 | snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), | |
734 | "ioc0_%02x", ++dev_ioc0_count); | |
735 | break; | |
736 | case PS3_DEVICE_TYPE_SB: | |
737 | dev->core.archdata.dma_ops = &ps3_sb_dma_ops; | |
738 | snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), | |
739 | "sb_%02x", ++dev_sb_count); | |
740 | ||
741 | break; | |
742 | case PS3_DEVICE_TYPE_VUART: | |
743 | snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), | |
744 | "vuart_%02x", ++dev_vuart_count); | |
745 | break; | |
746 | default: | |
747 | BUG(); | |
748 | }; | |
749 | ||
a3d4d643 | 750 | dev->core.archdata.of_node = NULL; |
a3d4d643 GL |
751 | dev->core.archdata.numa_node = 0; |
752 | ||
a3d4d643 GL |
753 | pr_debug("%s:%d add %s\n", __func__, __LINE__, dev->core.bus_id); |
754 | ||
755 | result = device_register(&dev->core); | |
756 | return result; | |
757 | } | |
758 | ||
759 | EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); | |
760 | ||
761 | int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) | |
762 | { | |
763 | int result; | |
764 | ||
6bb5cf10 GL |
765 | pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
766 | ||
767 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
768 | return -ENODEV; | |
769 | ||
a3d4d643 GL |
770 | drv->core.bus = &ps3_system_bus_type; |
771 | ||
772 | result = driver_register(&drv->core); | |
6bb5cf10 | 773 | pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
a3d4d643 GL |
774 | return result; |
775 | } | |
776 | ||
777 | EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); | |
778 | ||
779 | void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) | |
780 | { | |
6bb5cf10 | 781 | pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
a3d4d643 | 782 | driver_unregister(&drv->core); |
6bb5cf10 | 783 | pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
a3d4d643 GL |
784 | } |
785 | ||
786 | EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); |