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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / powerpc / platforms / ps3 / device-init.c
CommitLineData
ffbdd246
GL		 1/*
2 * PS3 device registration routines.
3 *
4 * Copyright (C) 2007 Sony Computer Entertainment Inc.
5 * Copyright 2007 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/delay.h>
22#include <linux/freezer.h>
23#include <linux/kernel.h>
24#include <linux/kthread.h>
25#include <linux/init.h>
5a0e3ad6 26#include <linux/slab.h>
b4cb2941 27#include <linux/reboot.h>
ffbdd246
GL		 28
29#include <asm/firmware.h>
30#include <asm/lv1call.h>
a5c631b1 31#include <asm/ps3stor.h>
ffbdd246
GL		 32
33#include "platform.h"
34
ed757002
GL		 35static int __init ps3_register_lpm_devices(void)
36{
37 int result;
38 u64 tmp1;
39 u64 tmp2;
40 struct ps3_system_bus_device *dev;
41
42 pr_debug(" -> %s:%d\n", __func__, __LINE__);
43
44 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
45 if (!dev)
46 return -ENOMEM;
47
48 dev->match_id = PS3_MATCH_ID_LPM;
49 dev->dev_type = PS3_DEVICE_TYPE_LPM;
50
51 /* The current lpm driver only supports a single BE processor. */
52
53 result = ps3_repository_read_be_node_id(0, &dev->lpm.node_id);
54
55 if (result) {
56 pr_debug("%s:%d: ps3_repository_read_be_node_id failed \n",
57 __func__, __LINE__);
58 goto fail_read_repo;
59 }
60
61 result = ps3_repository_read_lpm_privileges(dev->lpm.node_id, &tmp1,
62 &dev->lpm.rights);
63
64 if (result) {
65 pr_debug("%s:%d: ps3_repository_read_lpm_privleges failed \n",
66 __func__, __LINE__);
67 goto fail_read_repo;
68 }
69
70 lv1_get_logical_partition_id(&tmp2);
71
72 if (tmp1 != tmp2) {
73 pr_debug("%s:%d: wrong lpar\n",
74 __func__, __LINE__);
75 result = -ENODEV;
76 goto fail_rights;
77 }
78
79 if (!(dev->lpm.rights & PS3_LPM_RIGHTS_USE_LPM)) {
80 pr_debug("%s:%d: don't have rights to use lpm\n",
81 __func__, __LINE__);
82 result = -EPERM;
83 goto fail_rights;
84 }
85
5c949070 86 pr_debug("%s:%d: pu_id %llu, rights %llu(%llxh)\n",
ed757002
GL		 87 __func__, __LINE__, dev->lpm.pu_id, dev->lpm.rights,
88 dev->lpm.rights);
89
90 result = ps3_repository_read_pu_id(0, &dev->lpm.pu_id);
91
92 if (result) {
93 pr_debug("%s:%d: ps3_repository_read_pu_id failed \n",
94 __func__, __LINE__);
95 goto fail_read_repo;
96 }
97
98 result = ps3_system_bus_device_register(dev);
99
100 if (result) {
101 pr_debug("%s:%d ps3_system_bus_device_register failed\n",
102 __func__, __LINE__);
103 goto fail_register;
104 }
105
106 pr_debug(" <- %s:%d\n", __func__, __LINE__);
107 return 0;
108
109
110fail_register:
111fail_rights:
112fail_read_repo:
113 kfree(dev);
114 pr_debug(" <- %s:%d: failed\n", __func__, __LINE__);
115 return result;
116}
117
ffbdd246
GL		 118/**
119 * ps3_setup_gelic_device - Setup and register a gelic device instance.
120 *
121 * Allocates memory for a struct ps3_system_bus_device instance, initialises the
122 * structure members, and registers the device instance with the system bus.
123 */
124
125static int __init ps3_setup_gelic_device(
126 const struct ps3_repository_device *repo)
127{
128 int result;
129 struct layout {
130 struct ps3_system_bus_device dev;
131 struct ps3_dma_region d_region;
132 } *p;
133
134 pr_debug(" -> %s:%d\n", __func__, __LINE__);
135
136 BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
137 BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_GELIC);
138
139 p = kzalloc(sizeof(struct layout), GFP_KERNEL);
140
141 if (!p) {
142 result = -ENOMEM;
143 goto fail_malloc;
144 }
145
146 p->dev.match_id = PS3_MATCH_ID_GELIC;
147 p->dev.dev_type = PS3_DEVICE_TYPE_SB;
148 p->dev.bus_id = repo->bus_id;
149 p->dev.dev_id = repo->dev_id;
150 p->dev.d_region = &p->d_region;
151
152 result = ps3_repository_find_interrupt(repo,
153 PS3_INTERRUPT_TYPE_EVENT_PORT, &p->dev.interrupt_id);
154
155 if (result) {
156 pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
157 __func__, __LINE__);
158 goto fail_find_interrupt;
159 }
160
161 BUG_ON(p->dev.interrupt_id != 0);
162
163 result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
164 PS3_DMA_OTHER, NULL, 0);
165
166 if (result) {
167 pr_debug("%s:%d ps3_dma_region_init failed\n",
168 __func__, __LINE__);
169 goto fail_dma_init;
170 }
171
172 result = ps3_system_bus_device_register(&p->dev);
173
174 if (result) {
175 pr_debug("%s:%d ps3_system_bus_device_register failed\n",
176 __func__, __LINE__);
177 goto fail_device_register;
178 }
179
180 pr_debug(" <- %s:%d\n", __func__, __LINE__);
181 return result;
182
183fail_device_register:
184fail_dma_init:
185fail_find_interrupt:
186 kfree(p);
187fail_malloc:
188 pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
189 return result;
190}
191
192static int __init_refok ps3_setup_uhc_device(
193 const struct ps3_repository_device *repo, enum ps3_match_id match_id,
194 enum ps3_interrupt_type interrupt_type, enum ps3_reg_type reg_type)
195{
196 int result;
197 struct layout {
198 struct ps3_system_bus_device dev;
199 struct ps3_dma_region d_region;
200 struct ps3_mmio_region m_region;
201 } *p;
202 u64 bus_addr;
203 u64 len;
204
205 pr_debug(" -> %s:%d\n", __func__, __LINE__);
206
207 BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
208 BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_USB);
209
210 p = kzalloc(sizeof(struct layout), GFP_KERNEL);
211
212 if (!p) {
213 result = -ENOMEM;
214 goto fail_malloc;
215 }
216
217 p->dev.match_id = match_id;
218 p->dev.dev_type = PS3_DEVICE_TYPE_SB;
219 p->dev.bus_id = repo->bus_id;
220 p->dev.dev_id = repo->dev_id;
221 p->dev.d_region = &p->d_region;
222 p->dev.m_region = &p->m_region;
223
224 result = ps3_repository_find_interrupt(repo,
225 interrupt_type, &p->dev.interrupt_id);
226
227 if (result) {
228 pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
229 __func__, __LINE__);
230 goto fail_find_interrupt;
231 }
232
233 result = ps3_repository_find_reg(repo, reg_type,
234 &bus_addr, &len);
235
236 if (result) {
237 pr_debug("%s:%d ps3_repository_find_reg failed\n",
238 __func__, __LINE__);
239 goto fail_find_reg;
240 }
241
242 result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
243 PS3_DMA_INTERNAL, NULL, 0);
244
245 if (result) {
246 pr_debug("%s:%d ps3_dma_region_init failed\n",
247 __func__, __LINE__);
248 goto fail_dma_init;
249 }
250
251 result = ps3_mmio_region_init(&p->dev, p->dev.m_region, bus_addr, len,
252 PS3_MMIO_4K);
253
254 if (result) {
255 pr_debug("%s:%d ps3_mmio_region_init failed\n",
256 __func__, __LINE__);
257 goto fail_mmio_init;
258 }
259
260 result = ps3_system_bus_device_register(&p->dev);
261
262 if (result) {
263 pr_debug("%s:%d ps3_system_bus_device_register failed\n",
264 __func__, __LINE__);
265 goto fail_device_register;
266 }
267
268 pr_debug(" <- %s:%d\n", __func__, __LINE__);
269 return result;
270
271fail_device_register:
272fail_mmio_init:
273fail_dma_init:
274fail_find_reg:
275fail_find_interrupt:
276 kfree(p);
277fail_malloc:
278 pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
279 return result;
280}
281
282static int __init ps3_setup_ehci_device(
283 const struct ps3_repository_device *repo)
284{
285 return ps3_setup_uhc_device(repo, PS3_MATCH_ID_EHCI,
286 PS3_INTERRUPT_TYPE_SB_EHCI, PS3_REG_TYPE_SB_EHCI);
287}
288
289static int __init ps3_setup_ohci_device(
290 const struct ps3_repository_device *repo)
291{
292 return ps3_setup_uhc_device(repo, PS3_MATCH_ID_OHCI,
293 PS3_INTERRUPT_TYPE_SB_OHCI, PS3_REG_TYPE_SB_OHCI);
294}
295
296static int __init ps3_setup_vuart_device(enum ps3_match_id match_id,
297 unsigned int port_number)
298{
299 int result;
300 struct layout {
301 struct ps3_system_bus_device dev;
302 } *p;
303
304 pr_debug(" -> %s:%d: match_id %u, port %u\n", __func__, __LINE__,
305 match_id, port_number);
306
307 p = kzalloc(sizeof(struct layout), GFP_KERNEL);
308
309 if (!p)
310 return -ENOMEM;
311
312 p->dev.match_id = match_id;
313 p->dev.dev_type = PS3_DEVICE_TYPE_VUART;
314 p->dev.port_number = port_number;
315
316 result = ps3_system_bus_device_register(&p->dev);
317
d4ad3048 318 if (result) {
ffbdd246
GL		 319 pr_debug("%s:%d ps3_system_bus_device_register failed\n",
320 __func__, __LINE__);
d4ad3048
MM		 321 goto fail_device_register;
322 }
ffbdd246 323 pr_debug(" <- %s:%d\n", __func__, __LINE__);
d4ad3048
MM		 324 return 0;
325
326fail_device_register:
327 kfree(p);
328 pr_debug(" <- %s:%d fail\n", __func__, __LINE__);
ffbdd246
GL		 329 return result;
330}
331
a5c631b1
GU		 332static int ps3_setup_storage_dev(const struct ps3_repository_device *repo,
333 enum ps3_match_id match_id)
334{
335 int result;
336 struct ps3_storage_device *p;
337 u64 port, blk_size, num_blocks;
338 unsigned int num_regions, i;
339
340 pr_debug(" -> %s:%u: match_id %u\n", __func__, __LINE__, match_id);
341
342 result = ps3_repository_read_stor_dev_info(repo->bus_index,
343 repo->dev_index, &port,
344 &blk_size, &num_blocks,
345 &num_regions);
346 if (result) {
347 printk(KERN_ERR "%s:%u: _read_stor_dev_info failed %d\n",
348 __func__, __LINE__, result);
349 return -ENODEV;
350 }
351
5c949070 352 pr_debug("%s:%u: (%u:%u:%u): port %llu blk_size %llu num_blocks %llu "
a5c631b1 353 "num_regions %u\n", __func__, __LINE__, repo->bus_index,
75cdff92
GL		 354 repo->dev_index, repo->dev_type, port, blk_size, num_blocks,
355 num_regions);
a5c631b1
GU		 356
357 p = kzalloc(sizeof(struct ps3_storage_device) +
358 num_regions * sizeof(struct ps3_storage_region),
359 GFP_KERNEL);
360 if (!p) {
361 result = -ENOMEM;
362 goto fail_malloc;
363 }
364
365 p->sbd.match_id = match_id;
366 p->sbd.dev_type = PS3_DEVICE_TYPE_SB;
367 p->sbd.bus_id = repo->bus_id;
368 p->sbd.dev_id = repo->dev_id;
369 p->sbd.d_region = &p->dma_region;
370 p->blk_size = blk_size;
371 p->num_regions = num_regions;
372
373 result = ps3_repository_find_interrupt(repo,
374 PS3_INTERRUPT_TYPE_EVENT_PORT,
375 &p->sbd.interrupt_id);
376 if (result) {
377 printk(KERN_ERR "%s:%u: find_interrupt failed %d\n", __func__,
378 __LINE__, result);
379 result = -ENODEV;
380 goto fail_find_interrupt;
381 }
382
a5c631b1
GU		 383 for (i = 0; i < num_regions; i++) {
384 unsigned int id;
385 u64 start, size;
386
387 result = ps3_repository_read_stor_dev_region(repo->bus_index,
388 repo->dev_index,
389 i, &id, &start,
390 &size);
391 if (result) {
392 printk(KERN_ERR
393 "%s:%u: read_stor_dev_region failed %d\n",
394 __func__, __LINE__, result);
395 result = -ENODEV;
396 goto fail_read_region;
397 }
5c949070 398 pr_debug("%s:%u: region %u: id %u start %llu size %llu\n",
a5c631b1
GU		 399 __func__, __LINE__, i, id, start, size);
400
401 p->regions[i].id = id;
402 p->regions[i].start = start;
403 p->regions[i].size = size;
404 }
405
406 result = ps3_system_bus_device_register(&p->sbd);
407 if (result) {
408 pr_debug("%s:%u ps3_system_bus_device_register failed\n",
409 __func__, __LINE__);
410 goto fail_device_register;
411 }
412
413 pr_debug(" <- %s:%u\n", __func__, __LINE__);
414 return 0;
415
416fail_device_register:
417fail_read_region:
a5c631b1
GU		 418fail_find_interrupt:
419 kfree(p);
420fail_malloc:
421 pr_debug(" <- %s:%u: fail.\n", __func__, __LINE__);
422 return result;
423}
424
ffbdd246
GL		 425static int __init ps3_register_vuart_devices(void)
426{
427 int result;
428 unsigned int port_number;
429
430 pr_debug(" -> %s:%d\n", __func__, __LINE__);
431
432 result = ps3_repository_read_vuart_av_port(&port_number);
433 if (result)
434 port_number = 0; /* av default */
435
436 result = ps3_setup_vuart_device(PS3_MATCH_ID_AV_SETTINGS, port_number);
437 WARN_ON(result);
438
439 result = ps3_repository_read_vuart_sysmgr_port(&port_number);
440 if (result)
441 port_number = 2; /* sysmgr default */
442
443 result = ps3_setup_vuart_device(PS3_MATCH_ID_SYSTEM_MANAGER,
444 port_number);
445 WARN_ON(result);
446
447 pr_debug(" <- %s:%d\n", __func__, __LINE__);
448 return result;
449}
450
451static int __init ps3_register_sound_devices(void)
452{
453 int result;
454 struct layout {
455 struct ps3_system_bus_device dev;
456 struct ps3_dma_region d_region;
457 struct ps3_mmio_region m_region;
458 } *p;
459
460 pr_debug(" -> %s:%d\n", __func__, __LINE__);
461
462 p = kzalloc(sizeof(*p), GFP_KERNEL);
463 if (!p)
464 return -ENOMEM;
465
466 p->dev.match_id = PS3_MATCH_ID_SOUND;
467 p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
468 p->dev.d_region = &p->d_region;
469 p->dev.m_region = &p->m_region;
470
471 result = ps3_system_bus_device_register(&p->dev);
472
d4ad3048 473 if (result) {
ffbdd246
GL		 474 pr_debug("%s:%d ps3_system_bus_device_register failed\n",
475 __func__, __LINE__);
d4ad3048
MM		 476 goto fail_device_register;
477 }
ffbdd246 478 pr_debug(" <- %s:%d\n", __func__, __LINE__);
d4ad3048
MM		 479 return 0;
480
481fail_device_register:
482 kfree(p);
483 pr_debug(" <- %s:%d failed\n", __func__, __LINE__);
ffbdd246
GL		 484 return result;
485}
486
487static int __init ps3_register_graphics_devices(void)
488{
489 int result;
490 struct layout {
491 struct ps3_system_bus_device dev;
492 } *p;
493
494 pr_debug(" -> %s:%d\n", __func__, __LINE__);
495
496 p = kzalloc(sizeof(struct layout), GFP_KERNEL);
497
498 if (!p)
499 return -ENOMEM;
500
46d01492
GU		 501 p->dev.match_id = PS3_MATCH_ID_GPU;
502 p->dev.match_sub_id = PS3_MATCH_SUB_ID_GPU_FB;
ffbdd246
GL		 503 p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
504
505 result = ps3_system_bus_device_register(&p->dev);
506
d4ad3048 507 if (result) {
ffbdd246
GL		 508 pr_debug("%s:%d ps3_system_bus_device_register failed\n",
509 __func__, __LINE__);
d4ad3048
MM		 510 goto fail_device_register;
511 }
ffbdd246
GL		 512
513 pr_debug(" <- %s:%d\n", __func__, __LINE__);
d4ad3048
MM		 514 return 0;
515
516fail_device_register:
517 kfree(p);
518 pr_debug(" <- %s:%d failed\n", __func__, __LINE__);
ffbdd246
GL		 519 return result;
520}
521
cffb4add
JP		 522static int __init ps3_register_ramdisk_device(void)
523{
524 int result;
525 struct layout {
526 struct ps3_system_bus_device dev;
527 } *p;
528
529 pr_debug(" -> %s:%d\n", __func__, __LINE__);
530
531 p = kzalloc(sizeof(struct layout), GFP_KERNEL);
532
533 if (!p)
534 return -ENOMEM;
535
536 p->dev.match_id = PS3_MATCH_ID_GPU;
537 p->dev.match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK;
538 p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
539
540 result = ps3_system_bus_device_register(&p->dev);
541
542 if (result) {
543 pr_debug("%s:%d ps3_system_bus_device_register failed\n",
544 __func__, __LINE__);
545 goto fail_device_register;
546 }
547
548 pr_debug(" <- %s:%d\n", __func__, __LINE__);
549 return 0;
550
551fail_device_register:
552 kfree(p);
553 pr_debug(" <- %s:%d failed\n", __func__, __LINE__);
554 return result;
555}
556
ffbdd246 557/**
b163a256 558 * ps3_setup_dynamic_device - Setup a dynamic device from the repository
ffbdd246
GL		 559 */
560
b163a256 561static int ps3_setup_dynamic_device(const struct ps3_repository_device *repo)
ffbdd246
GL		 562{
563 int result;
564
565 switch (repo->dev_type) {
a5c631b1
GU		 566 case PS3_DEV_TYPE_STOR_DISK:
567 result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_DISK);
568
569 /* Some devices are not accessable from the Other OS lpar. */
570 if (result == -ENODEV) {
571 result = 0;
572 pr_debug("%s:%u: not accessable\n", __func__,
573 __LINE__);
574 }
575
576 if (result)
577 pr_debug("%s:%u ps3_setup_storage_dev failed\n",
578 __func__, __LINE__);
579 break;
580
581 case PS3_DEV_TYPE_STOR_ROM:
582 result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_ROM);
583 if (result)
584 pr_debug("%s:%u ps3_setup_storage_dev failed\n",
585 __func__, __LINE__);
586 break;
587
588 case PS3_DEV_TYPE_STOR_FLASH:
589 result = ps3_setup_storage_dev(repo, PS3_MATCH_ID_STOR_FLASH);
590 if (result)
591 pr_debug("%s:%u ps3_setup_storage_dev failed\n",
592 __func__, __LINE__);
593 break;
594
ffbdd246
GL		 595 default:
596 result = 0;
597 pr_debug("%s:%u: unsupported dev_type %u\n", __func__, __LINE__,
598 repo->dev_type);
599 }
600
601 return result;
602}
603
b163a256
GU		 604/**
605 * ps3_setup_static_device - Setup a static device from the repository
606 */
607
608static int __init ps3_setup_static_device(const struct ps3_repository_device *repo)
609{
610 int result;
611
612 switch (repo->dev_type) {
613 case PS3_DEV_TYPE_SB_GELIC:
614 result = ps3_setup_gelic_device(repo);
615 if (result) {
616 pr_debug("%s:%d ps3_setup_gelic_device failed\n",
617 __func__, __LINE__);
618 }
619 break;
620 case PS3_DEV_TYPE_SB_USB:
621
622 /* Each USB device has both an EHCI and an OHCI HC */
623
624 result = ps3_setup_ehci_device(repo);
625
626 if (result) {
627 pr_debug("%s:%d ps3_setup_ehci_device failed\n",
628 __func__, __LINE__);
629 }
630
631 result = ps3_setup_ohci_device(repo);
632
633 if (result) {
634 pr_debug("%s:%d ps3_setup_ohci_device failed\n",
635 __func__, __LINE__);
636 }
637 break;
638
639 default:
640 return ps3_setup_dynamic_device(repo);
641 }
642
643 return result;
644}
645
972b1f04
GU		 646static void ps3_find_and_add_device(u64 bus_id, u64 dev_id)
647{
648 struct ps3_repository_device repo;
649 int res;
650 unsigned int retries;
651 unsigned long rem;
652
653 /*
654 * On some firmware versions (e.g. 1.90), the device may not show up
655 * in the repository immediately
656 */
657 for (retries = 0; retries < 10; retries++) {
658 res = ps3_repository_find_device_by_id(&repo, bus_id, dev_id);
659 if (!res)
660 goto found;
661
662 rem = msleep_interruptible(100);
663 if (rem)
664 break;
665 }
5c949070 666 pr_warning("%s:%u: device %llu:%llu not found\n", __func__, __LINE__,
972b1f04
GU		 667 bus_id, dev_id);
668 return;
669
670found:
671 if (retries)
5c949070 672 pr_debug("%s:%u: device %llu:%llu found after %u retries\n",
972b1f04
GU		 673 __func__, __LINE__, bus_id, dev_id, retries);
674
b163a256 675 ps3_setup_dynamic_device(&repo);
972b1f04
GU		 676 return;
677}
b4cb2941
GU		 678
679#define PS3_NOTIFICATION_DEV_ID ULONG_MAX
680#define PS3_NOTIFICATION_INTERRUPT_ID 0
681
682struct ps3_notification_device {
683 struct ps3_system_bus_device sbd;
684 spinlock_t lock;
685 u64 tag;
686 u64 lv1_status;
687 struct completion done;
688};
689
690enum ps3_notify_type {
691 notify_device_ready = 0,
692 notify_region_probe = 1,
693 notify_region_update = 2,
694};
695
696struct ps3_notify_cmd {
697 u64 operation_code; /* must be zero */
698 u64 event_mask; /* OR of 1UL << enum ps3_notify_type */
699};
700
701struct ps3_notify_event {
702 u64 event_type; /* enum ps3_notify_type */
703 u64 bus_id;
704 u64 dev_id;
705 u64 dev_type;
706 u64 dev_port;
707};
708
709static irqreturn_t ps3_notification_interrupt(int irq, void *data)
710{
711 struct ps3_notification_device *dev = data;
712 int res;
713 u64 tag, status;
714
715 spin_lock(&dev->lock);
716 res = lv1_storage_get_async_status(PS3_NOTIFICATION_DEV_ID, &tag,
717 &status);
718 if (tag != dev->tag)
5c949070 719 pr_err("%s:%u: tag mismatch, got %llx, expected %llx\n",
b4cb2941
GU		 720 __func__, __LINE__, tag, dev->tag);
721
722 if (res) {
5c949070 723 pr_err("%s:%u: res %d status 0x%llx\n", __func__, __LINE__, res,
b4cb2941
GU		 724 status);
725 } else {
5c949070 726 pr_debug("%s:%u: completed, status 0x%llx\n", __func__,
b4cb2941
GU		 727 __LINE__, status);
728 dev->lv1_status = status;
729 complete(&dev->done);
730 }
731 spin_unlock(&dev->lock);
732 return IRQ_HANDLED;
733}
734
735static int ps3_notification_read_write(struct ps3_notification_device *dev,
736 u64 lpar, int write)
737{
738 const char *op = write ? "write" : "read";
739 unsigned long flags;
740 int res;
741
742 init_completion(&dev->done);
743 spin_lock_irqsave(&dev->lock, flags);
744 res = write ? lv1_storage_write(dev->sbd.dev_id, 0, 0, 1, 0, lpar,
745 &dev->tag)
746 : lv1_storage_read(dev->sbd.dev_id, 0, 0, 1, 0, lpar,
747 &dev->tag);
748 spin_unlock_irqrestore(&dev->lock, flags);
749 if (res) {
750 pr_err("%s:%u: %s failed %d\n", __func__, __LINE__, op, res);
751 return -EPERM;
752 }
753 pr_debug("%s:%u: notification %s issued\n", __func__, __LINE__, op);
754
755 res = wait_event_interruptible(dev->done.wait,
756 dev->done.done || kthread_should_stop());
757 if (kthread_should_stop())
758 res = -EINTR;
759 if (res) {
760 pr_debug("%s:%u: interrupted %s\n", __func__, __LINE__, op);
761 return res;
762 }
763
764 if (dev->lv1_status) {
5c949070 765 pr_err("%s:%u: %s not completed, status 0x%llx\n", __func__,
b4cb2941
GU		 766 __LINE__, op, dev->lv1_status);
767 return -EIO;
768 }
769 pr_debug("%s:%u: notification %s completed\n", __func__, __LINE__, op);
770
771 return 0;
772}
773
774static struct task_struct *probe_task;
775
ffbdd246
GL		 776/**
777 * ps3_probe_thread - Background repository probing at system startup.
778 *
779 * This implementation only supports background probing on a single bus.
b4cb2941
GU		 780 * It uses the hypervisor's storage device notification mechanism to wait until
781 * a storage device is ready. The device notification mechanism uses a
782 * pseudo device to asynchronously notify the guest when storage devices become
783 * ready. The notification device has a block size of 512 bytes.
ffbdd246
GL		 784 */
785
786static int ps3_probe_thread(void *data)
787{
b4cb2941 788 struct ps3_notification_device dev;
b4cb2941
GU		 789 int res;
790 unsigned int irq;
791 u64 lpar;
792 void *buf;
793 struct ps3_notify_cmd *notify_cmd;
794 struct ps3_notify_event *notify_event;
ffbdd246
GL		 795
796 pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__);
797
b4cb2941
GU		 798 buf = kzalloc(512, GFP_KERNEL);
799 if (!buf)
800 return -ENOMEM;
801
802 lpar = ps3_mm_phys_to_lpar(__pa(buf));
803 notify_cmd = buf;
804 notify_event = buf;
805
806 /* dummy system bus device */
807 dev.sbd.bus_id = (u64)data;
808 dev.sbd.dev_id = PS3_NOTIFICATION_DEV_ID;
809 dev.sbd.interrupt_id = PS3_NOTIFICATION_INTERRUPT_ID;
810
811 res = lv1_open_device(dev.sbd.bus_id, dev.sbd.dev_id, 0);
812 if (res) {
813 pr_err("%s:%u: lv1_open_device failed %s\n", __func__,
814 __LINE__, ps3_result(res));
815 goto fail_free;
816 }
817
818 res = ps3_sb_event_receive_port_setup(&dev.sbd, PS3_BINDING_CPU_ANY,
819 &irq);
820 if (res) {
821 pr_err("%s:%u: ps3_sb_event_receive_port_setup failed %d\n",
822 __func__, __LINE__, res);
823 goto fail_close_device;
824 }
825
826 spin_lock_init(&dev.lock);
827
828 res = request_irq(irq, ps3_notification_interrupt, IRQF_DISABLED,
829 "ps3_notification", &dev);
830 if (res) {
831 pr_err("%s:%u: request_irq failed %d\n", __func__, __LINE__,
832 res);
833 goto fail_sb_event_receive_port_destroy;
834 }
835
836 /* Setup and write the request for device notification. */
837 notify_cmd->operation_code = 0; /* must be zero */
838 notify_cmd->event_mask = 1UL << notify_region_probe;
839
840 res = ps3_notification_read_write(&dev, lpar, 1);
841 if (res)
842 goto fail_free_irq;
843
844 /* Loop here processing the requested notification events. */
ffbdd246
GL		 845 do {
846 try_to_freeze();
847
b4cb2941
GU		 848 memset(notify_event, 0, sizeof(*notify_event));
849
850 res = ps3_notification_read_write(&dev, lpar, 0);
851 if (res)
ffbdd246
GL		 852 break;
853
5c949070
SR		 854 pr_debug("%s:%u: notify event type 0x%llx bus id %llu dev id %llu"
855 " type %llu port %llu\n", __func__, __LINE__,
b4cb2941
GU		 856 notify_event->event_type, notify_event->bus_id,
857 notify_event->dev_id, notify_event->dev_type,
858 notify_event->dev_port);
859
860 if (notify_event->event_type != notify_region_probe ||
861 notify_event->bus_id != dev.sbd.bus_id) {
5c949070
SR		 862 pr_warning("%s:%u: bad notify_event: event %llu, "
863 "dev_id %llu, dev_type %llu\n",
b4cb2941
GU		 864 __func__, __LINE__, notify_event->event_type,
865 notify_event->dev_id,
866 notify_event->dev_type);
867 continue;
868 }
ffbdd246 869
972b1f04 870 ps3_find_and_add_device(dev.sbd.bus_id, notify_event->dev_id);
ffbdd246
GL		 871
872 } while (!kthread_should_stop());
873
b4cb2941
GU		 874fail_free_irq:
875 free_irq(irq, &dev);
876fail_sb_event_receive_port_destroy:
877 ps3_sb_event_receive_port_destroy(&dev.sbd, irq);
878fail_close_device:
879 lv1_close_device(dev.sbd.bus_id, dev.sbd.dev_id);
880fail_free:
881 kfree(buf);
882
883 probe_task = NULL;
884
ffbdd246
GL		 885 pr_debug(" <- %s:%u: kthread finished\n", __func__, __LINE__);
886
887 return 0;
888}
889
b4cb2941
GU		 890/**
891 * ps3_stop_probe_thread - Stops the background probe thread.
892 *
893 */
894
895static int ps3_stop_probe_thread(struct notifier_block *nb, unsigned long code,
896 void *data)
897{
898 if (probe_task)
899 kthread_stop(probe_task);
900 return 0;
901}
902
903static struct notifier_block nb = {
904 .notifier_call = ps3_stop_probe_thread
905};
906
ffbdd246
GL		 907/**
908 * ps3_start_probe_thread - Starts the background probe thread.
909 *
910 */
911
912static int __init ps3_start_probe_thread(enum ps3_bus_type bus_type)
913{
914 int result;
915 struct task_struct *task;
b4cb2941 916 struct ps3_repository_device repo;
ffbdd246
GL		 917
918 pr_debug(" -> %s:%d\n", __func__, __LINE__);
919
920 memset(&repo, 0, sizeof(repo));
921
922 repo.bus_type = bus_type;
923
924 result = ps3_repository_find_bus(repo.bus_type, 0, &repo.bus_index);
925
926 if (result) {
927 printk(KERN_ERR "%s: Cannot find bus (%d)\n", __func__, result);
928 return -ENODEV;
929 }
930
931 result = ps3_repository_read_bus_id(repo.bus_index, &repo.bus_id);
932
933 if (result) {
934 printk(KERN_ERR "%s: read_bus_id failed %d\n", __func__,
935 result);
936 return -ENODEV;
937 }
938
b4cb2941
GU		 939 task = kthread_run(ps3_probe_thread, (void *)repo.bus_id,
940 "ps3-probe-%u", bus_type);
ffbdd246
GL		 941
942 if (IS_ERR(task)) {
943 result = PTR_ERR(task);
944 printk(KERN_ERR "%s: kthread_run failed %d\n", __func__,
945 result);
946 return result;
947 }
948
b4cb2941
GU		 949 probe_task = task;
950 register_reboot_notifier(&nb);
951
ffbdd246
GL		 952 pr_debug(" <- %s:%d\n", __func__, __LINE__);
953 return 0;
954}
955
956/**
957 * ps3_register_devices - Probe the system and register devices found.
958 *
959 * A device_initcall() routine.
960 */
961
962static int __init ps3_register_devices(void)
963{
964 int result;
965
966 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
967 return -ENODEV;
968
969 pr_debug(" -> %s:%d\n", __func__, __LINE__);
970
971 /* ps3_repository_dump_bus_info(); */
972
973 result = ps3_start_probe_thread(PS3_BUS_TYPE_STORAGE);
974
975 ps3_register_vuart_devices();
976
977 ps3_register_graphics_devices();
978
b163a256 979 ps3_repository_find_devices(PS3_BUS_TYPE_SB, ps3_setup_static_device);
ffbdd246
GL		 980
981 ps3_register_sound_devices();
982
ed757002
GL		 983 ps3_register_lpm_devices();
984
cffb4add
JP		 985 ps3_register_ramdisk_device();
986
ffbdd246
GL		 987 pr_debug(" <- %s:%d\n", __func__, __LINE__);
988 return 0;
989}
990
991device_initcall(ps3_register_devices);
kernel source for telekom puls (alcatel/mediatek)