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 #include <linux/slab.h> 27 28 #include <asm/udbg.h> 29 #include <asm/lv1call.h> 30 #include <asm/firmware.h> 31 #include <asm/cell-regs.h> 32 33 #include "platform.h" 34 35 static struct device ps3_system_bus = { 36 .init_name = "ps3_system", 37 }; 38 39 /* FIXME: need device usage counters! */ 40 struct { 41 struct mutex mutex; 42 int sb_11; /* usb 0 */ 43 int sb_12; /* usb 0 */ 44 int gpu; 45 } static usage_hack; 46 47 static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id, 48 u64 dev_id) 49 { 50 return dev->bus_id == bus_id && dev->dev_id == dev_id; 51 } 52 53 static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev) 54 { 55 int result; 56 57 BUG_ON(!dev->bus_id); 58 mutex_lock(&usage_hack.mutex); 59 60 if (ps3_is_device(dev, 1, 1)) { 61 usage_hack.sb_11++; 62 if (usage_hack.sb_11 > 1) { 63 result = 0; 64 goto done; 65 } 66 } 67 68 if (ps3_is_device(dev, 1, 2)) { 69 usage_hack.sb_12++; 70 if (usage_hack.sb_12 > 1) { 71 result = 0; 72 goto done; 73 } 74 } 75 76 result = lv1_open_device(dev->bus_id, dev->dev_id, 0); 77 78 if (result) { 79 pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__, 80 __LINE__, ps3_result(result)); 81 result = -EPERM; 82 } 83 84 done: 85 mutex_unlock(&usage_hack.mutex); 86 return result; 87 } 88 89 static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev) 90 { 91 int result; 92 93 BUG_ON(!dev->bus_id); 94 mutex_lock(&usage_hack.mutex); 95 96 if (ps3_is_device(dev, 1, 1)) { 97 usage_hack.sb_11--; 98 if (usage_hack.sb_11) { 99 result = 0; 100 goto done; 101 } 102 } 103 104 if (ps3_is_device(dev, 1, 2)) { 105 usage_hack.sb_12--; 106 if (usage_hack.sb_12) { 107 result = 0; 108 goto done; 109 } 110 } 111 112 result = lv1_close_device(dev->bus_id, dev->dev_id); 113 BUG_ON(result); 114 115 done: 116 mutex_unlock(&usage_hack.mutex); 117 return result; 118 } 119 120 static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev) 121 { 122 int result; 123 124 mutex_lock(&usage_hack.mutex); 125 126 usage_hack.gpu++; 127 if (usage_hack.gpu > 1) { 128 result = 0; 129 goto done; 130 } 131 132 result = lv1_gpu_open(0); 133 134 if (result) { 135 pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__, 136 __LINE__, ps3_result(result)); 137 result = -EPERM; 138 } 139 140 done: 141 mutex_unlock(&usage_hack.mutex); 142 return result; 143 } 144 145 static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev) 146 { 147 int result; 148 149 mutex_lock(&usage_hack.mutex); 150 151 usage_hack.gpu--; 152 if (usage_hack.gpu) { 153 result = 0; 154 goto done; 155 } 156 157 result = lv1_gpu_close(); 158 BUG_ON(result); 159 160 done: 161 mutex_unlock(&usage_hack.mutex); 162 return result; 163 } 164 165 int ps3_open_hv_device(struct ps3_system_bus_device *dev) 166 { 167 BUG_ON(!dev); 168 pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); 169 170 switch (dev->match_id) { 171 case PS3_MATCH_ID_EHCI: 172 case PS3_MATCH_ID_OHCI: 173 case PS3_MATCH_ID_GELIC: 174 case PS3_MATCH_ID_STOR_DISK: 175 case PS3_MATCH_ID_STOR_ROM: 176 case PS3_MATCH_ID_STOR_FLASH: 177 return ps3_open_hv_device_sb(dev); 178 179 case PS3_MATCH_ID_SOUND: 180 case PS3_MATCH_ID_GPU: 181 return ps3_open_hv_device_gpu(dev); 182 183 case PS3_MATCH_ID_AV_SETTINGS: 184 case PS3_MATCH_ID_SYSTEM_MANAGER: 185 pr_debug("%s:%d: unsupported match_id: %u\n", __func__, 186 __LINE__, dev->match_id); 187 pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__, 188 dev->bus_id); 189 BUG(); 190 return -EINVAL; 191 192 default: 193 break; 194 } 195 196 pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, 197 dev->match_id); 198 BUG(); 199 return -ENODEV; 200 } 201 EXPORT_SYMBOL_GPL(ps3_open_hv_device); 202 203 int ps3_close_hv_device(struct ps3_system_bus_device *dev) 204 { 205 BUG_ON(!dev); 206 pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); 207 208 switch (dev->match_id) { 209 case PS3_MATCH_ID_EHCI: 210 case PS3_MATCH_ID_OHCI: 211 case PS3_MATCH_ID_GELIC: 212 case PS3_MATCH_ID_STOR_DISK: 213 case PS3_MATCH_ID_STOR_ROM: 214 case PS3_MATCH_ID_STOR_FLASH: 215 return ps3_close_hv_device_sb(dev); 216 217 case PS3_MATCH_ID_SOUND: 218 case PS3_MATCH_ID_GPU: 219 return ps3_close_hv_device_gpu(dev); 220 221 case PS3_MATCH_ID_AV_SETTINGS: 222 case PS3_MATCH_ID_SYSTEM_MANAGER: 223 pr_debug("%s:%d: unsupported match_id: %u\n", __func__, 224 __LINE__, dev->match_id); 225 pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__, 226 dev->bus_id); 227 BUG(); 228 return -EINVAL; 229 230 default: 231 break; 232 } 233 234 pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, 235 dev->match_id); 236 BUG(); 237 return -ENODEV; 238 } 239 EXPORT_SYMBOL_GPL(ps3_close_hv_device); 240 241 #define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__) 242 static void _dump_mmio_region(const struct ps3_mmio_region* r, 243 const char* func, int line) 244 { 245 pr_debug("%s:%d: dev %llu:%llu\n", func, line, r->dev->bus_id, 246 r->dev->dev_id); 247 pr_debug("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr); 248 pr_debug("%s:%d: len %lxh\n", func, line, r->len); 249 pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr); 250 } 251 252 static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r) 253 { 254 int result; 255 u64 lpar_addr; 256 257 result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id, 258 r->bus_addr, r->len, r->page_size, &lpar_addr); 259 r->lpar_addr = lpar_addr; 260 261 if (result) { 262 pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n", 263 __func__, __LINE__, ps3_result(result)); 264 r->lpar_addr = 0; 265 } 266 267 dump_mmio_region(r); 268 return result; 269 } 270 271 static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r) 272 { 273 /* device specific; do nothing currently */ 274 return 0; 275 } 276 277 int ps3_mmio_region_create(struct ps3_mmio_region *r) 278 { 279 return r->mmio_ops->create(r); 280 } 281 EXPORT_SYMBOL_GPL(ps3_mmio_region_create); 282 283 static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r) 284 { 285 int result; 286 287 dump_mmio_region(r); 288 result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id, 289 r->lpar_addr); 290 291 if (result) 292 pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n", 293 __func__, __LINE__, ps3_result(result)); 294 295 r->lpar_addr = 0; 296 return result; 297 } 298 299 static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r) 300 { 301 /* device specific; do nothing currently */ 302 return 0; 303 } 304 305 306 int ps3_free_mmio_region(struct ps3_mmio_region *r) 307 { 308 return r->mmio_ops->free(r); 309 } 310 311 EXPORT_SYMBOL_GPL(ps3_free_mmio_region); 312 313 static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = { 314 .create = ps3_sb_mmio_region_create, 315 .free = ps3_sb_free_mmio_region 316 }; 317 318 static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = { 319 .create = ps3_ioc0_mmio_region_create, 320 .free = ps3_ioc0_free_mmio_region 321 }; 322 323 int ps3_mmio_region_init(struct ps3_system_bus_device *dev, 324 struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len, 325 enum ps3_mmio_page_size page_size) 326 { 327 r->dev = dev; 328 r->bus_addr = bus_addr; 329 r->len = len; 330 r->page_size = page_size; 331 switch (dev->dev_type) { 332 case PS3_DEVICE_TYPE_SB: 333 r->mmio_ops = &ps3_mmio_sb_region_ops; 334 break; 335 case PS3_DEVICE_TYPE_IOC0: 336 r->mmio_ops = &ps3_mmio_ioc0_region_ops; 337 break; 338 default: 339 BUG(); 340 return -EINVAL; 341 } 342 return 0; 343 } 344 EXPORT_SYMBOL_GPL(ps3_mmio_region_init); 345 346 static int ps3_system_bus_match(struct device *_dev, 347 struct device_driver *_drv) 348 { 349 int result; 350 struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv); 351 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 352 353 if (!dev->match_sub_id) 354 result = dev->match_id == drv->match_id; 355 else 356 result = dev->match_sub_id == drv->match_sub_id && 357 dev->match_id == drv->match_id; 358 359 if (result) 360 pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n", 361 __func__, __LINE__, 362 dev->match_id, dev->match_sub_id, dev_name(&dev->core), 363 drv->match_id, drv->match_sub_id, drv->core.name); 364 else 365 pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n", 366 __func__, __LINE__, 367 dev->match_id, dev->match_sub_id, dev_name(&dev->core), 368 drv->match_id, drv->match_sub_id, drv->core.name); 369 370 return result; 371 } 372 373 static int ps3_system_bus_probe(struct device *_dev) 374 { 375 int result = 0; 376 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 377 struct ps3_system_bus_driver *drv; 378 379 BUG_ON(!dev); 380 dev_dbg(_dev, "%s:%d\n", __func__, __LINE__); 381 382 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 383 BUG_ON(!drv); 384 385 if (drv->probe) 386 result = drv->probe(dev); 387 else 388 pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__, 389 dev_name(&dev->core)); 390 391 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); 392 return result; 393 } 394 395 static int ps3_system_bus_remove(struct device *_dev) 396 { 397 int result = 0; 398 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 399 struct ps3_system_bus_driver *drv; 400 401 BUG_ON(!dev); 402 dev_dbg(_dev, "%s:%d\n", __func__, __LINE__); 403 404 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 405 BUG_ON(!drv); 406 407 if (drv->remove) 408 result = drv->remove(dev); 409 else 410 dev_dbg(&dev->core, "%s:%d %s: no remove method\n", 411 __func__, __LINE__, drv->core.name); 412 413 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); 414 return result; 415 } 416 417 static void ps3_system_bus_shutdown(struct device *_dev) 418 { 419 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 420 struct ps3_system_bus_driver *drv; 421 422 BUG_ON(!dev); 423 424 dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, 425 dev->match_id); 426 427 if (!dev->core.driver) { 428 dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, 429 __LINE__); 430 return; 431 } 432 433 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 434 435 BUG_ON(!drv); 436 437 dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__, 438 dev_name(&dev->core), drv->core.name); 439 440 if (drv->shutdown) 441 drv->shutdown(dev); 442 else if (drv->remove) { 443 dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n", 444 __func__, __LINE__, drv->core.name); 445 drv->remove(dev); 446 } else { 447 dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n", 448 __func__, __LINE__, drv->core.name); 449 BUG(); 450 } 451 452 dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); 453 } 454 455 static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) 456 { 457 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 458 459 if (add_uevent_var(env, "MODALIAS=ps3:%d:%d", dev->match_id, 460 dev->match_sub_id)) 461 return -ENOMEM; 462 return 0; 463 } 464 465 static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, 466 char *buf) 467 { 468 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 469 int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id, 470 dev->match_sub_id); 471 472 return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; 473 } 474 475 static struct device_attribute ps3_system_bus_dev_attrs[] = { 476 __ATTR_RO(modalias), 477 __ATTR_NULL, 478 }; 479 480 struct bus_type ps3_system_bus_type = { 481 .name = "ps3_system_bus", 482 .match = ps3_system_bus_match, 483 .uevent = ps3_system_bus_uevent, 484 .probe = ps3_system_bus_probe, 485 .remove = ps3_system_bus_remove, 486 .shutdown = ps3_system_bus_shutdown, 487 .dev_attrs = ps3_system_bus_dev_attrs, 488 }; 489 490 static int __init ps3_system_bus_init(void) 491 { 492 int result; 493 494 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 495 return -ENODEV; 496 497 pr_debug(" -> %s:%d\n", __func__, __LINE__); 498 499 mutex_init(&usage_hack.mutex); 500 501 result = device_register(&ps3_system_bus); 502 BUG_ON(result); 503 504 result = bus_register(&ps3_system_bus_type); 505 BUG_ON(result); 506 507 pr_debug(" <- %s:%d\n", __func__, __LINE__); 508 return result; 509 } 510 511 core_initcall(ps3_system_bus_init); 512 513 /* Allocates a contiguous real buffer and creates mappings over it. 514 * Returns the virtual address of the buffer and sets dma_handle 515 * to the dma address (mapping) of the first page. 516 */ 517 static void * ps3_alloc_coherent(struct device *_dev, size_t size, 518 dma_addr_t *dma_handle, gfp_t flag) 519 { 520 int result; 521 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 522 unsigned long virt_addr; 523 524 flag &= ~(__GFP_DMA | __GFP_HIGHMEM); 525 flag |= __GFP_ZERO; 526 527 virt_addr = __get_free_pages(flag, get_order(size)); 528 529 if (!virt_addr) { 530 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); 531 goto clean_none; 532 } 533 534 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, 535 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | 536 CBE_IOPTE_SO_RW | CBE_IOPTE_M); 537 538 if (result) { 539 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 540 __func__, __LINE__, result); 541 BUG_ON("check region type"); 542 goto clean_alloc; 543 } 544 545 return (void*)virt_addr; 546 547 clean_alloc: 548 free_pages(virt_addr, get_order(size)); 549 clean_none: 550 dma_handle = NULL; 551 return NULL; 552 } 553 554 static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, 555 dma_addr_t dma_handle) 556 { 557 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 558 559 ps3_dma_unmap(dev->d_region, dma_handle, size); 560 free_pages((unsigned long)vaddr, get_order(size)); 561 } 562 563 /* Creates TCEs for a user provided buffer. The user buffer must be 564 * contiguous real kernel storage (not vmalloc). The address passed here 565 * comprises a page address and offset into that page. The dma_addr_t 566 * returned will point to the same byte within the page as was passed in. 567 */ 568 569 static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, 570 unsigned long offset, size_t size, enum dma_data_direction direction, 571 struct dma_attrs *attrs) 572 { 573 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 574 int result; 575 dma_addr_t bus_addr; 576 void *ptr = page_address(page) + offset; 577 578 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 579 &bus_addr, 580 CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | 581 CBE_IOPTE_SO_RW | CBE_IOPTE_M); 582 583 if (result) { 584 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 585 __func__, __LINE__, result); 586 } 587 588 return bus_addr; 589 } 590 591 static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, 592 unsigned long offset, size_t size, 593 enum dma_data_direction direction, 594 struct dma_attrs *attrs) 595 { 596 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 597 int result; 598 dma_addr_t bus_addr; 599 u64 iopte_flag; 600 void *ptr = page_address(page) + offset; 601 602 iopte_flag = CBE_IOPTE_M; 603 switch (direction) { 604 case DMA_BIDIRECTIONAL: 605 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; 606 break; 607 case DMA_TO_DEVICE: 608 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_SO_R; 609 break; 610 case DMA_FROM_DEVICE: 611 iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; 612 break; 613 default: 614 /* not happned */ 615 BUG(); 616 }; 617 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 618 &bus_addr, iopte_flag); 619 620 if (result) { 621 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 622 __func__, __LINE__, result); 623 } 624 return bus_addr; 625 } 626 627 static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, 628 size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) 629 { 630 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 631 int result; 632 633 result = ps3_dma_unmap(dev->d_region, dma_addr, size); 634 635 if (result) { 636 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", 637 __func__, __LINE__, result); 638 } 639 } 640 641 static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, 642 int nents, enum dma_data_direction direction, struct dma_attrs *attrs) 643 { 644 #if defined(CONFIG_PS3_DYNAMIC_DMA) 645 BUG_ON("do"); 646 return -EPERM; 647 #else 648 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 649 struct scatterlist *sg; 650 int i; 651 652 for_each_sg(sgl, sg, nents, i) { 653 int result = ps3_dma_map(dev->d_region, sg_phys(sg), 654 sg->length, &sg->dma_address, 0); 655 656 if (result) { 657 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 658 __func__, __LINE__, result); 659 return -EINVAL; 660 } 661 662 sg->dma_length = sg->length; 663 } 664 665 return nents; 666 #endif 667 } 668 669 static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, 670 int nents, 671 enum dma_data_direction direction, 672 struct dma_attrs *attrs) 673 { 674 BUG(); 675 return 0; 676 } 677 678 static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, 679 int nents, enum dma_data_direction direction, struct dma_attrs *attrs) 680 { 681 #if defined(CONFIG_PS3_DYNAMIC_DMA) 682 BUG_ON("do"); 683 #endif 684 } 685 686 static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, 687 int nents, enum dma_data_direction direction, 688 struct dma_attrs *attrs) 689 { 690 BUG(); 691 } 692 693 static int ps3_dma_supported(struct device *_dev, u64 mask) 694 { 695 return mask >= DMA_BIT_MASK(32); 696 } 697 698 static struct dma_map_ops ps3_sb_dma_ops = { 699 .alloc_coherent = ps3_alloc_coherent, 700 .free_coherent = ps3_free_coherent, 701 .map_sg = ps3_sb_map_sg, 702 .unmap_sg = ps3_sb_unmap_sg, 703 .dma_supported = ps3_dma_supported, 704 .map_page = ps3_sb_map_page, 705 .unmap_page = ps3_unmap_page, 706 }; 707 708 static struct dma_map_ops ps3_ioc0_dma_ops = { 709 .alloc_coherent = ps3_alloc_coherent, 710 .free_coherent = ps3_free_coherent, 711 .map_sg = ps3_ioc0_map_sg, 712 .unmap_sg = ps3_ioc0_unmap_sg, 713 .dma_supported = ps3_dma_supported, 714 .map_page = ps3_ioc0_map_page, 715 .unmap_page = ps3_unmap_page, 716 }; 717 718 /** 719 * ps3_system_bus_release_device - remove a device from the system bus 720 */ 721 722 static void ps3_system_bus_release_device(struct device *_dev) 723 { 724 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 725 kfree(dev); 726 } 727 728 /** 729 * ps3_system_bus_device_register - add a device to the system bus 730 * 731 * ps3_system_bus_device_register() expects the dev object to be allocated 732 * dynamically by the caller. The system bus takes ownership of the dev 733 * object and frees the object in ps3_system_bus_release_device(). 734 */ 735 736 int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) 737 { 738 int result; 739 static unsigned int dev_ioc0_count; 740 static unsigned int dev_sb_count; 741 static unsigned int dev_vuart_count; 742 static unsigned int dev_lpm_count; 743 744 if (!dev->core.parent) 745 dev->core.parent = &ps3_system_bus; 746 dev->core.bus = &ps3_system_bus_type; 747 dev->core.release = ps3_system_bus_release_device; 748 749 switch (dev->dev_type) { 750 case PS3_DEVICE_TYPE_IOC0: 751 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops; 752 dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count); 753 break; 754 case PS3_DEVICE_TYPE_SB: 755 dev->core.archdata.dma_ops = &ps3_sb_dma_ops; 756 dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count); 757 758 break; 759 case PS3_DEVICE_TYPE_VUART: 760 dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count); 761 break; 762 case PS3_DEVICE_TYPE_LPM: 763 dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count); 764 break; 765 default: 766 BUG(); 767 }; 768 769 dev->core.of_node = NULL; 770 set_dev_node(&dev->core, 0); 771 772 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core)); 773 774 result = device_register(&dev->core); 775 return result; 776 } 777 778 EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); 779 780 int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) 781 { 782 int result; 783 784 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 785 786 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 787 return -ENODEV; 788 789 drv->core.bus = &ps3_system_bus_type; 790 791 result = driver_register(&drv->core); 792 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 793 return result; 794 } 795 796 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); 797 798 void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) 799 { 800 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 801 driver_unregister(&drv->core); 802 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 803 } 804 805 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); 806