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/export.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 static struct { 41 struct mutex mutex; 42 int sb_11; /* usb 0 */ 43 int sb_12; /* usb 0 */ 44 int gpu; 45 } 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 static DEVICE_ATTR_RO(modalias); 475 476 static struct attribute *ps3_system_bus_dev_attrs[] = { 477 &dev_attr_modalias.attr, 478 NULL, 479 }; 480 ATTRIBUTE_GROUPS(ps3_system_bus_dev); 481 482 struct bus_type ps3_system_bus_type = { 483 .name = "ps3_system_bus", 484 .match = ps3_system_bus_match, 485 .uevent = ps3_system_bus_uevent, 486 .probe = ps3_system_bus_probe, 487 .remove = ps3_system_bus_remove, 488 .shutdown = ps3_system_bus_shutdown, 489 .dev_groups = ps3_system_bus_dev_groups, 490 }; 491 492 static int __init ps3_system_bus_init(void) 493 { 494 int result; 495 496 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 497 return -ENODEV; 498 499 pr_debug(" -> %s:%d\n", __func__, __LINE__); 500 501 mutex_init(&usage_hack.mutex); 502 503 result = device_register(&ps3_system_bus); 504 BUG_ON(result); 505 506 result = bus_register(&ps3_system_bus_type); 507 BUG_ON(result); 508 509 pr_debug(" <- %s:%d\n", __func__, __LINE__); 510 return result; 511 } 512 513 core_initcall(ps3_system_bus_init); 514 515 /* Allocates a contiguous real buffer and creates mappings over it. 516 * Returns the virtual address of the buffer and sets dma_handle 517 * to the dma address (mapping) of the first page. 518 */ 519 static void * ps3_alloc_coherent(struct device *_dev, size_t size, 520 dma_addr_t *dma_handle, gfp_t flag, 521 unsigned long attrs) 522 { 523 int result; 524 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 525 unsigned long virt_addr; 526 527 flag &= ~(__GFP_DMA | __GFP_HIGHMEM); 528 flag |= __GFP_ZERO; 529 530 virt_addr = __get_free_pages(flag, get_order(size)); 531 532 if (!virt_addr) { 533 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); 534 goto clean_none; 535 } 536 537 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, 538 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | 539 CBE_IOPTE_SO_RW | CBE_IOPTE_M); 540 541 if (result) { 542 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 543 __func__, __LINE__, result); 544 BUG_ON("check region type"); 545 goto clean_alloc; 546 } 547 548 return (void*)virt_addr; 549 550 clean_alloc: 551 free_pages(virt_addr, get_order(size)); 552 clean_none: 553 dma_handle = NULL; 554 return NULL; 555 } 556 557 static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, 558 dma_addr_t dma_handle, unsigned long attrs) 559 { 560 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 561 562 ps3_dma_unmap(dev->d_region, dma_handle, size); 563 free_pages((unsigned long)vaddr, get_order(size)); 564 } 565 566 /* Creates TCEs for a user provided buffer. The user buffer must be 567 * contiguous real kernel storage (not vmalloc). The address passed here 568 * comprises a page address and offset into that page. The dma_addr_t 569 * returned will point to the same byte within the page as was passed in. 570 */ 571 572 static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, 573 unsigned long offset, size_t size, enum dma_data_direction direction, 574 unsigned long attrs) 575 { 576 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 577 int result; 578 dma_addr_t bus_addr; 579 void *ptr = page_address(page) + offset; 580 581 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 582 &bus_addr, 583 CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | 584 CBE_IOPTE_SO_RW | CBE_IOPTE_M); 585 586 if (result) { 587 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 588 __func__, __LINE__, result); 589 } 590 591 return bus_addr; 592 } 593 594 static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, 595 unsigned long offset, size_t size, 596 enum dma_data_direction direction, 597 unsigned long attrs) 598 { 599 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 600 int result; 601 dma_addr_t bus_addr; 602 u64 iopte_flag; 603 void *ptr = page_address(page) + offset; 604 605 iopte_flag = CBE_IOPTE_M; 606 switch (direction) { 607 case DMA_BIDIRECTIONAL: 608 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; 609 break; 610 case DMA_TO_DEVICE: 611 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_SO_R; 612 break; 613 case DMA_FROM_DEVICE: 614 iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; 615 break; 616 default: 617 /* not happned */ 618 BUG(); 619 }; 620 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 621 &bus_addr, iopte_flag); 622 623 if (result) { 624 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 625 __func__, __LINE__, result); 626 } 627 return bus_addr; 628 } 629 630 static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, 631 size_t size, enum dma_data_direction direction, unsigned long attrs) 632 { 633 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 634 int result; 635 636 result = ps3_dma_unmap(dev->d_region, dma_addr, size); 637 638 if (result) { 639 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", 640 __func__, __LINE__, result); 641 } 642 } 643 644 static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, 645 int nents, enum dma_data_direction direction, unsigned long attrs) 646 { 647 #if defined(CONFIG_PS3_DYNAMIC_DMA) 648 BUG_ON("do"); 649 return -EPERM; 650 #else 651 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 652 struct scatterlist *sg; 653 int i; 654 655 for_each_sg(sgl, sg, nents, i) { 656 int result = ps3_dma_map(dev->d_region, sg_phys(sg), 657 sg->length, &sg->dma_address, 0); 658 659 if (result) { 660 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 661 __func__, __LINE__, result); 662 return -EINVAL; 663 } 664 665 sg->dma_length = sg->length; 666 } 667 668 return nents; 669 #endif 670 } 671 672 static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, 673 int nents, 674 enum dma_data_direction direction, 675 unsigned long attrs) 676 { 677 BUG(); 678 return 0; 679 } 680 681 static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, 682 int nents, enum dma_data_direction direction, unsigned long attrs) 683 { 684 #if defined(CONFIG_PS3_DYNAMIC_DMA) 685 BUG_ON("do"); 686 #endif 687 } 688 689 static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, 690 int nents, enum dma_data_direction direction, 691 unsigned long attrs) 692 { 693 BUG(); 694 } 695 696 static int ps3_dma_supported(struct device *_dev, u64 mask) 697 { 698 return mask >= DMA_BIT_MASK(32); 699 } 700 701 static u64 ps3_dma_get_required_mask(struct device *_dev) 702 { 703 return DMA_BIT_MASK(32); 704 } 705 706 static const struct dma_map_ops ps3_sb_dma_ops = { 707 .alloc = ps3_alloc_coherent, 708 .free = ps3_free_coherent, 709 .map_sg = ps3_sb_map_sg, 710 .unmap_sg = ps3_sb_unmap_sg, 711 .dma_supported = ps3_dma_supported, 712 .get_required_mask = ps3_dma_get_required_mask, 713 .map_page = ps3_sb_map_page, 714 .unmap_page = ps3_unmap_page, 715 }; 716 717 static const struct dma_map_ops ps3_ioc0_dma_ops = { 718 .alloc = ps3_alloc_coherent, 719 .free = ps3_free_coherent, 720 .map_sg = ps3_ioc0_map_sg, 721 .unmap_sg = ps3_ioc0_unmap_sg, 722 .dma_supported = ps3_dma_supported, 723 .get_required_mask = ps3_dma_get_required_mask, 724 .map_page = ps3_ioc0_map_page, 725 .unmap_page = ps3_unmap_page, 726 }; 727 728 /** 729 * ps3_system_bus_release_device - remove a device from the system bus 730 */ 731 732 static void ps3_system_bus_release_device(struct device *_dev) 733 { 734 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 735 kfree(dev); 736 } 737 738 /** 739 * ps3_system_bus_device_register - add a device to the system bus 740 * 741 * ps3_system_bus_device_register() expects the dev object to be allocated 742 * dynamically by the caller. The system bus takes ownership of the dev 743 * object and frees the object in ps3_system_bus_release_device(). 744 */ 745 746 int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) 747 { 748 int result; 749 static unsigned int dev_ioc0_count; 750 static unsigned int dev_sb_count; 751 static unsigned int dev_vuart_count; 752 static unsigned int dev_lpm_count; 753 754 if (!dev->core.parent) 755 dev->core.parent = &ps3_system_bus; 756 dev->core.bus = &ps3_system_bus_type; 757 dev->core.release = ps3_system_bus_release_device; 758 759 switch (dev->dev_type) { 760 case PS3_DEVICE_TYPE_IOC0: 761 dev->core.dma_ops = &ps3_ioc0_dma_ops; 762 dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count); 763 break; 764 case PS3_DEVICE_TYPE_SB: 765 dev->core.dma_ops = &ps3_sb_dma_ops; 766 dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count); 767 768 break; 769 case PS3_DEVICE_TYPE_VUART: 770 dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count); 771 break; 772 case PS3_DEVICE_TYPE_LPM: 773 dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count); 774 break; 775 default: 776 BUG(); 777 }; 778 779 dev->core.of_node = NULL; 780 set_dev_node(&dev->core, 0); 781 782 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core)); 783 784 result = device_register(&dev->core); 785 return result; 786 } 787 788 EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); 789 790 int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) 791 { 792 int result; 793 794 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 795 796 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 797 return -ENODEV; 798 799 drv->core.bus = &ps3_system_bus_type; 800 801 result = driver_register(&drv->core); 802 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 803 return result; 804 } 805 806 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); 807 808 void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) 809 { 810 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 811 driver_unregister(&drv->core); 812 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 813 } 814 815 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); 816