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> 28 #include <asm/lv1call.h> 29 #include <asm/firmware.h> 30 31 #include "platform.h" 32 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); 238 239 #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 { 243 pr_debug("%s:%d: dev %u:%u\n", func, line, r->dev->bus_id, 244 r->dev->dev_id); 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 } 249 250 static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r) 251 { 252 int result; 253 254 result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id, 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)); 260 r->lpar_addr = 0; 261 } 262 263 dump_mmio_region(r); 264 return result; 265 } 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 } 277 EXPORT_SYMBOL_GPL(ps3_mmio_region_create); 278 279 static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r) 280 { 281 int result; 282 283 dump_mmio_region(r); 284 ; 285 result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id, 286 r->lpar_addr); 287 288 if (result) 289 pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n", 290 __func__, __LINE__, ps3_result(result)); 291 292 r->lpar_addr = 0; 293 return result; 294 } 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 } 307 308 EXPORT_SYMBOL_GPL(ps3_free_mmio_region); 309 310 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); 342 343 static int ps3_system_bus_match(struct device *_dev, 344 struct device_driver *_drv) 345 { 346 int result; 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); 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 { 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; 363 364 BUG_ON(!dev); 365 pr_info(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); 366 367 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 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); 375 376 pr_info(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id); 377 return result; 378 } 379 380 static int ps3_system_bus_remove(struct device *_dev) 381 { 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); 391 392 if (drv->remove) 393 result = drv->remove(dev); 394 else 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 } 401 402 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; 406 407 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__); 438 } 439 440 static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) 441 { 442 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 443 int i = 0, length = 0; 444 445 if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id)) 446 return -ENOMEM; 447 return 0; 448 } 449 450 static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, 451 char *buf) 452 { 453 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 454 int len = snprintf(buf, PAGE_SIZE, "ps3:%d\n", dev->match_id); 455 456 return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; 457 } 458 459 static struct device_attribute ps3_system_bus_dev_attrs[] = { 460 __ATTR_RO(modalias), 461 __ATTR_NULL, 462 }; 463 464 struct bus_type ps3_system_bus_type = { 465 .name = "ps3_system_bus", 466 .match = ps3_system_bus_match, 467 .uevent = ps3_system_bus_uevent, 468 .probe = ps3_system_bus_probe, 469 .remove = ps3_system_bus_remove, 470 .shutdown = ps3_system_bus_shutdown, 471 .dev_attrs = ps3_system_bus_dev_attrs, 472 }; 473 474 static int __init ps3_system_bus_init(void) 475 { 476 int result; 477 478 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 479 return -ENODEV; 480 481 pr_debug(" -> %s:%d\n", __func__, __LINE__); 482 483 mutex_init(&usage_hack.mutex); 484 485 result = device_register(&ps3_system_bus); 486 BUG_ON(result); 487 488 result = bus_register(&ps3_system_bus_type); 489 BUG_ON(result); 490 491 pr_debug(" <- %s:%d\n", __func__, __LINE__); 492 return result; 493 } 494 495 core_initcall(ps3_system_bus_init); 496 497 /* Allocates a contiguous real buffer and creates mappings over it. 498 * Returns the virtual address of the buffer and sets dma_handle 499 * to the dma address (mapping) of the first page. 500 */ 501 static void * ps3_alloc_coherent(struct device *_dev, size_t size, 502 dma_addr_t *dma_handle, gfp_t flag) 503 { 504 int result; 505 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 506 unsigned long virt_addr; 507 508 flag &= ~(__GFP_DMA | __GFP_HIGHMEM); 509 flag |= __GFP_ZERO; 510 511 virt_addr = __get_free_pages(flag, get_order(size)); 512 513 if (!virt_addr) { 514 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); 515 goto clean_none; 516 } 517 518 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, 519 IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M); 520 521 if (result) { 522 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 523 __func__, __LINE__, result); 524 BUG_ON("check region type"); 525 goto clean_alloc; 526 } 527 528 return (void*)virt_addr; 529 530 clean_alloc: 531 free_pages(virt_addr, get_order(size)); 532 clean_none: 533 dma_handle = NULL; 534 return NULL; 535 } 536 537 static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, 538 dma_addr_t dma_handle) 539 { 540 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 541 542 ps3_dma_unmap(dev->d_region, dma_handle, size); 543 free_pages((unsigned long)vaddr, get_order(size)); 544 } 545 546 /* Creates TCEs for a user provided buffer. The user buffer must be 547 * contiguous real kernel storage (not vmalloc). The address of the buffer 548 * passed here is the kernel (virtual) address of the buffer. The buffer 549 * need not be page aligned, the dma_addr_t returned will point to the same 550 * byte within the page as vaddr. 551 */ 552 553 static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size, 554 enum dma_data_direction direction) 555 { 556 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 557 int result; 558 unsigned long bus_addr; 559 560 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 561 &bus_addr, 562 IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M); 563 564 if (result) { 565 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 566 __func__, __LINE__, result); 567 } 568 569 return bus_addr; 570 } 571 572 static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr, 573 size_t size, 574 enum dma_data_direction direction) 575 { 576 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 577 int result; 578 unsigned long bus_addr; 579 u64 iopte_flag; 580 581 iopte_flag = IOPTE_M; 582 switch (direction) { 583 case DMA_BIDIRECTIONAL: 584 iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW; 585 break; 586 case DMA_TO_DEVICE: 587 iopte_flag |= IOPTE_PP_R | IOPTE_SO_R; 588 break; 589 case DMA_FROM_DEVICE: 590 iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW; 591 break; 592 default: 593 /* not happned */ 594 BUG(); 595 }; 596 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 597 &bus_addr, iopte_flag); 598 599 if (result) { 600 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 601 __func__, __LINE__, result); 602 } 603 return bus_addr; 604 } 605 606 static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr, 607 size_t size, enum dma_data_direction direction) 608 { 609 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 610 int result; 611 612 result = ps3_dma_unmap(dev->d_region, dma_addr, size); 613 614 if (result) { 615 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", 616 __func__, __LINE__, result); 617 } 618 } 619 620 static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sg, int nents, 621 enum dma_data_direction direction) 622 { 623 #if defined(CONFIG_PS3_DYNAMIC_DMA) 624 BUG_ON("do"); 625 return -EPERM; 626 #else 627 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 628 int i; 629 630 for (i = 0; i < nents; i++, sg++) { 631 int result = ps3_dma_map(dev->d_region, 632 page_to_phys(sg->page) + sg->offset, sg->length, 633 &sg->dma_address, 0); 634 635 if (result) { 636 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 637 __func__, __LINE__, result); 638 return -EINVAL; 639 } 640 641 sg->dma_length = sg->length; 642 } 643 644 return nents; 645 #endif 646 } 647 648 static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, 649 int nents, 650 enum dma_data_direction direction) 651 { 652 BUG(); 653 return 0; 654 } 655 656 static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, 657 int nents, enum dma_data_direction direction) 658 { 659 #if defined(CONFIG_PS3_DYNAMIC_DMA) 660 BUG_ON("do"); 661 #endif 662 } 663 664 static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, 665 int nents, enum dma_data_direction direction) 666 { 667 BUG(); 668 } 669 670 static int ps3_dma_supported(struct device *_dev, u64 mask) 671 { 672 return mask >= DMA_32BIT_MASK; 673 } 674 675 static struct dma_mapping_ops ps3_sb_dma_ops = { 676 .alloc_coherent = ps3_alloc_coherent, 677 .free_coherent = ps3_free_coherent, 678 .map_single = ps3_sb_map_single, 679 .unmap_single = ps3_unmap_single, 680 .map_sg = ps3_sb_map_sg, 681 .unmap_sg = ps3_sb_unmap_sg, 682 .dma_supported = ps3_dma_supported 683 }; 684 685 static struct dma_mapping_ops ps3_ioc0_dma_ops = { 686 .alloc_coherent = ps3_alloc_coherent, 687 .free_coherent = ps3_free_coherent, 688 .map_single = ps3_ioc0_map_single, 689 .unmap_single = ps3_unmap_single, 690 .map_sg = ps3_ioc0_map_sg, 691 .unmap_sg = ps3_ioc0_unmap_sg, 692 .dma_supported = ps3_dma_supported 693 }; 694 695 /** 696 * ps3_system_bus_release_device - remove a device from the system bus 697 */ 698 699 static void ps3_system_bus_release_device(struct device *_dev) 700 { 701 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 702 kfree(dev); 703 } 704 705 /** 706 * ps3_system_bus_device_register - add a device to the system bus 707 * 708 * ps3_system_bus_device_register() expects the dev object to be allocated 709 * dynamically by the caller. The system bus takes ownership of the dev 710 * object and frees the object in ps3_system_bus_release_device(). 711 */ 712 713 int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) 714 { 715 int result; 716 static unsigned int dev_ioc0_count; 717 static unsigned int dev_sb_count; 718 static unsigned int dev_vuart_count; 719 720 if (!dev->core.parent) 721 dev->core.parent = &ps3_system_bus; 722 dev->core.bus = &ps3_system_bus_type; 723 dev->core.release = ps3_system_bus_release_device; 724 725 switch (dev->dev_type) { 726 case PS3_DEVICE_TYPE_IOC0: 727 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops; 728 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 729 "ioc0_%02x", ++dev_ioc0_count); 730 break; 731 case PS3_DEVICE_TYPE_SB: 732 dev->core.archdata.dma_ops = &ps3_sb_dma_ops; 733 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 734 "sb_%02x", ++dev_sb_count); 735 736 break; 737 case PS3_DEVICE_TYPE_VUART: 738 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 739 "vuart_%02x", ++dev_vuart_count); 740 break; 741 default: 742 BUG(); 743 }; 744 745 dev->core.archdata.of_node = NULL; 746 dev->core.archdata.numa_node = 0; 747 748 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev->core.bus_id); 749 750 result = device_register(&dev->core); 751 return result; 752 } 753 754 EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); 755 756 int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) 757 { 758 int result; 759 760 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 761 762 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 763 return -ENODEV; 764 765 drv->core.bus = &ps3_system_bus_type; 766 767 result = driver_register(&drv->core); 768 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 769 return result; 770 } 771 772 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); 773 774 void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) 775 { 776 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 777 driver_unregister(&drv->core); 778 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 779 } 780 781 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); 782