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[POWERPC] PS3: Add logical performance monitor repository routines
[deliverable/linux.git] / arch / powerpc / platforms / ps3 / system-bus.c
CommitLineData
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		 33static struct device ps3_system_bus = {
34 .bus_id = "ps3_system",
35};
36
37/* FIXME: need device usage counters! */
38struct {
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		 45static 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
51static 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
82done:
83 mutex_unlock(&usage_hack.mutex);
84 return result;
85}
86
87static 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
113done:
114 mutex_unlock(&usage_hack.mutex);
115 return result;
116}
117
118static 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
138done:
139 mutex_unlock(&usage_hack.mutex);
140 return result;
141}
142
143static 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
158done:
159 mutex_unlock(&usage_hack.mutex);
160 return result;
161}
162
163int 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);
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}
199EXPORT_SYMBOL_GPL(ps3_open_hv_device);
200
201int 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);
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}
237EXPORT_SYMBOL_GPL(ps3_close_hv_device);
238
a3d4d643
GL		 239#define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__)
240static 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 250static 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
267static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r)
268{
269 /* device specific; do nothing currently */
270 return 0;
271}
272
273int ps3_mmio_region_create(struct ps3_mmio_region *r)
274{
275 return r->mmio_ops->create(r);
276}
9288f5c3 277EXPORT_SYMBOL_GPL(ps3_mmio_region_create);
a3d4d643 278
6bb5cf10 279static 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
296static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r)
297{
298 /* device specific; do nothing currently */
299 return 0;
300}
301
302
303int ps3_free_mmio_region(struct ps3_mmio_region *r)
304{
305 return r->mmio_ops->free(r);
306}
307
9288f5c3 308EXPORT_SYMBOL_GPL(ps3_free_mmio_region);
a3d4d643 309
6bb5cf10
GL		 310static 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
315static 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
320int 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}
341EXPORT_SYMBOL_GPL(ps3_mmio_region_init);
342
a3d4d643
GL		 343static 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
358static 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
380static 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		 402static 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
7eff2e7a 440static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env)
688b3378
DW		 441{
442 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
688b3378 443
7eff2e7a 444 if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id))
688b3378 445 return -ENOMEM;
688b3378
DW		 446 return 0;
447}
448
6758555d
DW		 449static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
450 char *buf)
451{
452 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
453 int len = snprintf(buf, PAGE_SIZE, "ps3:%d\n", dev->match_id);
454
455 return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
456}
457
458static struct device_attribute ps3_system_bus_dev_attrs[] = {
459 __ATTR_RO(modalias),
460 __ATTR_NULL,
461};
462
a3d4d643 463struct bus_type ps3_system_bus_type = {
2a08ea69 464 .name = "ps3_system_bus",
a3d4d643 465 .match = ps3_system_bus_match,
688b3378 466 .uevent = ps3_system_bus_uevent,
a3d4d643
GL		 467 .probe = ps3_system_bus_probe,
468 .remove = ps3_system_bus_remove,
6bb5cf10 469 .shutdown = ps3_system_bus_shutdown,
6758555d 470 .dev_attrs = ps3_system_bus_dev_attrs,
a3d4d643
GL		 471};
472
6bb5cf10 473static int __init ps3_system_bus_init(void)
a3d4d643
GL		 474{
475 int result;
476
e22ba7e3 477 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
ef596c69 478 return -ENODEV;
e22ba7e3 479
6bb5cf10
GL		 480 pr_debug(" -> %s:%d\n", __func__, __LINE__);
481
482 mutex_init(&usage_hack.mutex);
483
484 result = device_register(&ps3_system_bus);
485 BUG_ON(result);
486
a3d4d643
GL		 487 result = bus_register(&ps3_system_bus_type);
488 BUG_ON(result);
6bb5cf10
GL		 489
490 pr_debug(" <- %s:%d\n", __func__, __LINE__);
a3d4d643
GL		 491 return result;
492}
493
494core_initcall(ps3_system_bus_init);
495
496/* Allocates a contiguous real buffer and creates mappings over it.
497 * Returns the virtual address of the buffer and sets dma_handle
498 * to the dma address (mapping) of the first page.
499 */
a3d4d643 500static void * ps3_alloc_coherent(struct device *_dev, size_t size,
6bb5cf10 501 dma_addr_t *dma_handle, gfp_t flag)
a3d4d643
GL		 502{
503 int result;
6bb5cf10 504 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
a3d4d643
GL		 505 unsigned long virt_addr;
506
a3d4d643
GL		 507 flag &= ~(__GFP_DMA | __GFP_HIGHMEM);
508 flag |= __GFP_ZERO;
509
510 virt_addr = __get_free_pages(flag, get_order(size));
511
512 if (!virt_addr) {
513 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__);
514 goto clean_none;
515 }
516
6bb5cf10
GL		 517 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle,
518 IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M);
a3d4d643
GL		 519
520 if (result) {
521 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
522 __func__, __LINE__, result);
523 BUG_ON("check region type");
524 goto clean_alloc;
525 }
526
527 return (void*)virt_addr;
528
529clean_alloc:
530 free_pages(virt_addr, get_order(size));
531clean_none:
532 dma_handle = NULL;
533 return NULL;
534}
535
536static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
537 dma_addr_t dma_handle)
538{
6bb5cf10 539 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
a3d4d643
GL		 540
541 ps3_dma_unmap(dev->d_region, dma_handle, size);
542 free_pages((unsigned long)vaddr, get_order(size));
543}
544
545/* Creates TCEs for a user provided buffer. The user buffer must be
546 * contiguous real kernel storage (not vmalloc). The address of the buffer
547 * passed here is the kernel (virtual) address of the buffer. The buffer
548 * need not be page aligned, the dma_addr_t returned will point to the same
549 * byte within the page as vaddr.
550 */
551
6bb5cf10 552static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size,
a3d4d643
GL		 553 enum dma_data_direction direction)
554{
6bb5cf10 555 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
a3d4d643
GL		 556 int result;
557 unsigned long bus_addr;
558
559 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
6bb5cf10
GL		 560 &bus_addr,
561 IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M);
a3d4d643
GL		 562
563 if (result) {
564 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
565 __func__, __LINE__, result);
566 }
567
568 return bus_addr;
569}
570
6bb5cf10
GL		 571static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr,
572 size_t size,
573 enum dma_data_direction direction)
574{
575 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
576 int result;
577 unsigned long bus_addr;
578 u64 iopte_flag;
579
580 iopte_flag = IOPTE_M;
581 switch (direction) {
582 case DMA_BIDIRECTIONAL:
583 iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW;
584 break;
585 case DMA_TO_DEVICE:
586 iopte_flag |= IOPTE_PP_R | IOPTE_SO_R;
587 break;
588 case DMA_FROM_DEVICE:
589 iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW;
590 break;
591 default:
592 /* not happned */
593 BUG();
594 };
595 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
596 &bus_addr, iopte_flag);
597
598 if (result) {
599 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
600 __func__, __LINE__, result);
601 }
602 return bus_addr;
603}
604
a3d4d643
GL		 605static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr,
606 size_t size, enum dma_data_direction direction)
607{
6bb5cf10 608 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
a3d4d643
GL		 609 int result;
610
611 result = ps3_dma_unmap(dev->d_region, dma_addr, size);
612
613 if (result) {
614 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n",
615 __func__, __LINE__, result);
616 }
617}
618
d1ed455e
JA		 619static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl,
620 int nents, enum dma_data_direction direction)
a3d4d643
GL		 621{
622#if defined(CONFIG_PS3_DYNAMIC_DMA)
623 BUG_ON("do");
35063bb2
GL		 624 return -EPERM;
625#else
6bb5cf10 626 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
d1ed455e 627 struct scatterlist *sg;
435e0b2b
SR		 628 int i;
629
d1ed455e 630 for_each_sg(sgl, sg, nents, i) {
58b053e4
JA		 631 int result = ps3_dma_map(dev->d_region, sg_phys(sg),
632 sg->length, &sg->dma_address, 0);
35063bb2
GL		 633
634 if (result) {
635 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
636 __func__, __LINE__, result);
637 return -EINVAL;
638 }
639
640 sg->dma_length = sg->length;
641 }
642
643 return nents;
a3d4d643 644#endif
a3d4d643
GL		 645}
646
6bb5cf10
GL		 647static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg,
648 int nents,
649 enum dma_data_direction direction)
650{
651 BUG();
652 return 0;
653}
654
655static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg,
a3d4d643
GL		 656 int nents, enum dma_data_direction direction)
657{
658#if defined(CONFIG_PS3_DYNAMIC_DMA)
659 BUG_ON("do");
660#endif
661}
662
6bb5cf10
GL		 663static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg,
664 int nents, enum dma_data_direction direction)
665{
666 BUG();
667}
668
a3d4d643
GL		 669static int ps3_dma_supported(struct device *_dev, u64 mask)
670{
35063bb2 671 return mask >= DMA_32BIT_MASK;
a3d4d643
GL		 672}
673
6bb5cf10
GL		 674static struct dma_mapping_ops ps3_sb_dma_ops = {
675 .alloc_coherent = ps3_alloc_coherent,
676 .free_coherent = ps3_free_coherent,
677 .map_single = ps3_sb_map_single,
678 .unmap_single = ps3_unmap_single,
679 .map_sg = ps3_sb_map_sg,
680 .unmap_sg = ps3_sb_unmap_sg,
681 .dma_supported = ps3_dma_supported
682};
683
684static struct dma_mapping_ops ps3_ioc0_dma_ops = {
a3d4d643
GL		 685 .alloc_coherent = ps3_alloc_coherent,
686 .free_coherent = ps3_free_coherent,
6bb5cf10 687 .map_single = ps3_ioc0_map_single,
a3d4d643 688 .unmap_single = ps3_unmap_single,
6bb5cf10
GL		 689 .map_sg = ps3_ioc0_map_sg,
690 .unmap_sg = ps3_ioc0_unmap_sg,
a3d4d643
GL		 691 .dma_supported = ps3_dma_supported
692};
693
694/**
695 * ps3_system_bus_release_device - remove a device from the system bus
696 */
697
698static void ps3_system_bus_release_device(struct device *_dev)
699{
6bb5cf10 700 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
a3d4d643
GL		 701 kfree(dev);
702}
703
704/**
705 * ps3_system_bus_device_register - add a device to the system bus
706 *
707 * ps3_system_bus_device_register() expects the dev object to be allocated
708 * dynamically by the caller. The system bus takes ownership of the dev
709 * object and frees the object in ps3_system_bus_release_device().
710 */
711
712int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
713{
714 int result;
6bb5cf10
GL		 715 static unsigned int dev_ioc0_count;
716 static unsigned int dev_sb_count;
717 static unsigned int dev_vuart_count;
a3d4d643 718
6bb5cf10
GL		 719 if (!dev->core.parent)
720 dev->core.parent = &ps3_system_bus;
a3d4d643
GL		 721 dev->core.bus = &ps3_system_bus_type;
722 dev->core.release = ps3_system_bus_release_device;
723
6bb5cf10
GL		 724 switch (dev->dev_type) {
725 case PS3_DEVICE_TYPE_IOC0:
726 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops;
727 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
728 "ioc0_%02x", ++dev_ioc0_count);
729 break;
730 case PS3_DEVICE_TYPE_SB:
731 dev->core.archdata.dma_ops = &ps3_sb_dma_ops;
732 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
733 "sb_%02x", ++dev_sb_count);
734
735 break;
736 case PS3_DEVICE_TYPE_VUART:
737 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
738 "vuart_%02x", ++dev_vuart_count);
739 break;
740 default:
741 BUG();
742 };
743
a3d4d643 744 dev->core.archdata.of_node = NULL;
a3d4d643
GL		 745 dev->core.archdata.numa_node = 0;
746
a3d4d643
GL		 747 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev->core.bus_id);
748
749 result = device_register(&dev->core);
750 return result;
751}
752
753EXPORT_SYMBOL_GPL(ps3_system_bus_device_register);
754
755int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv)
756{
757 int result;
758
6bb5cf10
GL		 759 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
760
761 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
762 return -ENODEV;
763
a3d4d643
GL		 764 drv->core.bus = &ps3_system_bus_type;
765
766 result = driver_register(&drv->core);
6bb5cf10 767 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
a3d4d643
GL		 768 return result;
769}
770
771EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register);
772
773void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv)
774{
6bb5cf10 775 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
a3d4d643 776 driver_unregister(&drv->core);
6bb5cf10 777 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
a3d4d643
GL		 778}
779
780EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister);
Linux kernel - Deliverables
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