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, u64 bus_id, 46 u64 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: %lu\n", __func__, __LINE__, 186 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: %lu\n", __func__, __LINE__, 224 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 %lu:%lu\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); 443 444 if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id)) 445 return -ENOMEM; 446 return 0; 447 } 448 449 static 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 } 457 458 static struct device_attribute ps3_system_bus_dev_attrs[] = { 459 __ATTR_RO(modalias), 460 __ATTR_NULL, 461 }; 462 463 struct bus_type ps3_system_bus_type = { 464 .name = "ps3_system_bus", 465 .match = ps3_system_bus_match, 466 .uevent = ps3_system_bus_uevent, 467 .probe = ps3_system_bus_probe, 468 .remove = ps3_system_bus_remove, 469 .shutdown = ps3_system_bus_shutdown, 470 .dev_attrs = ps3_system_bus_dev_attrs, 471 }; 472 473 static int __init ps3_system_bus_init(void) 474 { 475 int result; 476 477 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 478 return -ENODEV; 479 480 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); 486 487 result = bus_register(&ps3_system_bus_type); 488 BUG_ON(result); 489 490 pr_debug(" <- %s:%d\n", __func__, __LINE__); 491 return result; 492 } 493 494 core_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 */ 500 static void * ps3_alloc_coherent(struct device *_dev, size_t size, 501 dma_addr_t *dma_handle, gfp_t flag) 502 { 503 int result; 504 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 505 unsigned long virt_addr; 506 507 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 } 516 517 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, 518 IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M); 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; 528 529 clean_alloc: 530 free_pages(virt_addr, get_order(size)); 531 clean_none: 532 dma_handle = NULL; 533 return NULL; 534 } 535 536 static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, 537 dma_addr_t dma_handle) 538 { 539 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 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 */ 551 552 static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size, 553 enum dma_data_direction direction) 554 { 555 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 556 int result; 557 unsigned long bus_addr; 558 559 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 560 &bus_addr, 561 IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M); 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 } 570 571 static 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 } 604 605 static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr, 606 size_t size, enum dma_data_direction direction) 607 { 608 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 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 } 618 619 static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, 620 int nents, enum dma_data_direction direction) 621 { 622 #if defined(CONFIG_PS3_DYNAMIC_DMA) 623 BUG_ON("do"); 624 return -EPERM; 625 #else 626 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 627 struct scatterlist *sg; 628 int i; 629 630 for_each_sg(sgl, sg, nents, i) { 631 int result = ps3_dma_map(dev->d_region, sg_phys(sg), 632 sg->length, &sg->dma_address, 0); 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; 644 #endif 645 } 646 647 static 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 } 654 655 static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, 656 int nents, enum dma_data_direction direction) 657 { 658 #if defined(CONFIG_PS3_DYNAMIC_DMA) 659 BUG_ON("do"); 660 #endif 661 } 662 663 static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, 664 int nents, enum dma_data_direction direction) 665 { 666 BUG(); 667 } 668 669 static int ps3_dma_supported(struct device *_dev, u64 mask) 670 { 671 return mask >= DMA_32BIT_MASK; 672 } 673 674 static 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 }; 683 684 static struct dma_mapping_ops ps3_ioc0_dma_ops = { 685 .alloc_coherent = ps3_alloc_coherent, 686 .free_coherent = ps3_free_coherent, 687 .map_single = ps3_ioc0_map_single, 688 .unmap_single = ps3_unmap_single, 689 .map_sg = ps3_ioc0_map_sg, 690 .unmap_sg = ps3_ioc0_unmap_sg, 691 .dma_supported = ps3_dma_supported 692 }; 693 694 /** 695 * ps3_system_bus_release_device - remove a device from the system bus 696 */ 697 698 static void ps3_system_bus_release_device(struct device *_dev) 699 { 700 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 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 */ 711 712 int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) 713 { 714 int result; 715 static unsigned int dev_ioc0_count; 716 static unsigned int dev_sb_count; 717 static unsigned int dev_vuart_count; 718 static unsigned int dev_lpm_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 case PS3_DEVICE_TYPE_LPM: 742 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 743 "lpm_%02x", ++dev_lpm_count); 744 break; 745 default: 746 BUG(); 747 }; 748 749 dev->core.archdata.of_node = NULL; 750 dev->core.archdata.numa_node = 0; 751 752 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev->core.bus_id); 753 754 result = device_register(&dev->core); 755 return result; 756 } 757 758 EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); 759 760 int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) 761 { 762 int result; 763 764 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 765 766 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 767 return -ENODEV; 768 769 drv->core.bus = &ps3_system_bus_type; 770 771 result = driver_register(&drv->core); 772 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 773 return result; 774 } 775 776 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); 777 778 void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) 779 { 780 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 781 driver_unregister(&drv->core); 782 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 783 } 784 785 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); 786