system-bus.c revision 88b90c96b787ecb5c72384b6873468f814cce650
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 33static struct device ps3_system_bus = { 34 .bus_id = "ps3_system", 35}; 36 37/* FIXME: need device usage counters! */ 38struct { 39 struct mutex mutex; 40 int sb_11; /* usb 0 */ 41 int sb_12; /* usb 0 */ 42 int gpu; 43} static usage_hack; 44 45static 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 51static 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 82done: 83 mutex_unlock(&usage_hack.mutex); 84 return result; 85} 86 87static 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 113done: 114 mutex_unlock(&usage_hack.mutex); 115 return result; 116} 117 118static 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 138done: 139 mutex_unlock(&usage_hack.mutex); 140 return result; 141} 142 143static 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 158done: 159 mutex_unlock(&usage_hack.mutex); 160 return result; 161} 162 163int 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} 199EXPORT_SYMBOL_GPL(ps3_open_hv_device); 200 201int 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} 237EXPORT_SYMBOL_GPL(ps3_close_hv_device); 238 239#define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__) 240static 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 250static 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 267static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r) 268{ 269 /* device specific; do nothing currently */ 270 return 0; 271} 272 273int ps3_mmio_region_create(struct ps3_mmio_region *r) 274{ 275 return r->mmio_ops->create(r); 276} 277EXPORT_SYMBOL_GPL(ps3_mmio_region_create); 278 279static 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 296static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r) 297{ 298 /* device specific; do nothing currently */ 299 return 0; 300} 301 302 303int ps3_free_mmio_region(struct ps3_mmio_region *r) 304{ 305 return r->mmio_ops->free(r); 306} 307 308EXPORT_SYMBOL_GPL(ps3_free_mmio_region); 309 310static 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 315static 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 320int 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} 341EXPORT_SYMBOL_GPL(ps3_mmio_region_init); 342 343static 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 if (result) 353 pr_info("%s:%d: dev=%u(%s), drv=%u(%s): match\n", __func__, 354 __LINE__, dev->match_id, dev->core.bus_id, 355 drv->match_id, drv->core.name); 356 else 357 pr_debug("%s:%d: dev=%u(%s), drv=%u(%s): miss\n", __func__, 358 __LINE__, dev->match_id, dev->core.bus_id, 359 drv->match_id, drv->core.name); 360 return result; 361} 362 363static int ps3_system_bus_probe(struct device *_dev) 364{ 365 int result = 0; 366 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 367 struct ps3_system_bus_driver *drv; 368 369 BUG_ON(!dev); 370 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); 371 372 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 373 BUG_ON(!drv); 374 375 if (drv->probe) 376 result = drv->probe(dev); 377 else 378 pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__, 379 dev->core.bus_id); 380 381 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id); 382 return result; 383} 384 385static int ps3_system_bus_remove(struct device *_dev) 386{ 387 int result = 0; 388 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 389 struct ps3_system_bus_driver *drv; 390 391 BUG_ON(!dev); 392 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); 393 394 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 395 BUG_ON(!drv); 396 397 if (drv->remove) 398 result = drv->remove(dev); 399 else 400 dev_dbg(&dev->core, "%s:%d %s: no remove method\n", 401 __func__, __LINE__, drv->core.name); 402 403 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id); 404 return result; 405} 406 407static void ps3_system_bus_shutdown(struct device *_dev) 408{ 409 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 410 struct ps3_system_bus_driver *drv; 411 412 BUG_ON(!dev); 413 414 dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, 415 dev->match_id); 416 417 if (!dev->core.driver) { 418 dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, 419 __LINE__); 420 return; 421 } 422 423 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 424 425 BUG_ON(!drv); 426 427 dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__, 428 dev->core.bus_id, drv->core.name); 429 430 if (drv->shutdown) 431 drv->shutdown(dev); 432 else if (drv->remove) { 433 dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n", 434 __func__, __LINE__, drv->core.name); 435 drv->remove(dev); 436 } else { 437 dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n", 438 __func__, __LINE__, drv->core.name); 439 BUG(); 440 } 441 442 dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); 443} 444 445static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) 446{ 447 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 448 449 if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id)) 450 return -ENOMEM; 451 return 0; 452} 453 454static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, 455 char *buf) 456{ 457 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 458 int len = snprintf(buf, PAGE_SIZE, "ps3:%d\n", dev->match_id); 459 460 return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; 461} 462 463static struct device_attribute ps3_system_bus_dev_attrs[] = { 464 __ATTR_RO(modalias), 465 __ATTR_NULL, 466}; 467 468struct bus_type ps3_system_bus_type = { 469 .name = "ps3_system_bus", 470 .match = ps3_system_bus_match, 471 .uevent = ps3_system_bus_uevent, 472 .probe = ps3_system_bus_probe, 473 .remove = ps3_system_bus_remove, 474 .shutdown = ps3_system_bus_shutdown, 475 .dev_attrs = ps3_system_bus_dev_attrs, 476}; 477 478static int __init ps3_system_bus_init(void) 479{ 480 int result; 481 482 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 483 return -ENODEV; 484 485 pr_debug(" -> %s:%d\n", __func__, __LINE__); 486 487 mutex_init(&usage_hack.mutex); 488 489 result = device_register(&ps3_system_bus); 490 BUG_ON(result); 491 492 result = bus_register(&ps3_system_bus_type); 493 BUG_ON(result); 494 495 pr_debug(" <- %s:%d\n", __func__, __LINE__); 496 return result; 497} 498 499core_initcall(ps3_system_bus_init); 500 501/* Allocates a contiguous real buffer and creates mappings over it. 502 * Returns the virtual address of the buffer and sets dma_handle 503 * to the dma address (mapping) of the first page. 504 */ 505static void * ps3_alloc_coherent(struct device *_dev, size_t size, 506 dma_addr_t *dma_handle, gfp_t flag) 507{ 508 int result; 509 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 510 unsigned long virt_addr; 511 512 flag &= ~(__GFP_DMA | __GFP_HIGHMEM); 513 flag |= __GFP_ZERO; 514 515 virt_addr = __get_free_pages(flag, get_order(size)); 516 517 if (!virt_addr) { 518 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); 519 goto clean_none; 520 } 521 522 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, 523 IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M); 524 525 if (result) { 526 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 527 __func__, __LINE__, result); 528 BUG_ON("check region type"); 529 goto clean_alloc; 530 } 531 532 return (void*)virt_addr; 533 534clean_alloc: 535 free_pages(virt_addr, get_order(size)); 536clean_none: 537 dma_handle = NULL; 538 return NULL; 539} 540 541static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, 542 dma_addr_t dma_handle) 543{ 544 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 545 546 ps3_dma_unmap(dev->d_region, dma_handle, size); 547 free_pages((unsigned long)vaddr, get_order(size)); 548} 549 550/* Creates TCEs for a user provided buffer. The user buffer must be 551 * contiguous real kernel storage (not vmalloc). The address of the buffer 552 * passed here is the kernel (virtual) address of the buffer. The buffer 553 * need not be page aligned, the dma_addr_t returned will point to the same 554 * byte within the page as vaddr. 555 */ 556 557static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size, 558 enum dma_data_direction direction) 559{ 560 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 561 int result; 562 unsigned long bus_addr; 563 564 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 565 &bus_addr, 566 IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M); 567 568 if (result) { 569 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 570 __func__, __LINE__, result); 571 } 572 573 return bus_addr; 574} 575 576static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr, 577 size_t size, 578 enum dma_data_direction direction) 579{ 580 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 581 int result; 582 unsigned long bus_addr; 583 u64 iopte_flag; 584 585 iopte_flag = IOPTE_M; 586 switch (direction) { 587 case DMA_BIDIRECTIONAL: 588 iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW; 589 break; 590 case DMA_TO_DEVICE: 591 iopte_flag |= IOPTE_PP_R | IOPTE_SO_R; 592 break; 593 case DMA_FROM_DEVICE: 594 iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW; 595 break; 596 default: 597 /* not happned */ 598 BUG(); 599 }; 600 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 601 &bus_addr, iopte_flag); 602 603 if (result) { 604 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 605 __func__, __LINE__, result); 606 } 607 return bus_addr; 608} 609 610static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr, 611 size_t size, enum dma_data_direction direction) 612{ 613 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 614 int result; 615 616 result = ps3_dma_unmap(dev->d_region, dma_addr, size); 617 618 if (result) { 619 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", 620 __func__, __LINE__, result); 621 } 622} 623 624static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, 625 int nents, enum dma_data_direction direction) 626{ 627#if defined(CONFIG_PS3_DYNAMIC_DMA) 628 BUG_ON("do"); 629 return -EPERM; 630#else 631 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 632 struct scatterlist *sg; 633 int i; 634 635 for_each_sg(sgl, sg, nents, i) { 636 int result = ps3_dma_map(dev->d_region, sg_phys(sg), 637 sg->length, &sg->dma_address, 0); 638 639 if (result) { 640 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 641 __func__, __LINE__, result); 642 return -EINVAL; 643 } 644 645 sg->dma_length = sg->length; 646 } 647 648 return nents; 649#endif 650} 651 652static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, 653 int nents, 654 enum dma_data_direction direction) 655{ 656 BUG(); 657 return 0; 658} 659 660static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, 661 int nents, enum dma_data_direction direction) 662{ 663#if defined(CONFIG_PS3_DYNAMIC_DMA) 664 BUG_ON("do"); 665#endif 666} 667 668static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, 669 int nents, enum dma_data_direction direction) 670{ 671 BUG(); 672} 673 674static int ps3_dma_supported(struct device *_dev, u64 mask) 675{ 676 return mask >= DMA_32BIT_MASK; 677} 678 679static struct dma_mapping_ops ps3_sb_dma_ops = { 680 .alloc_coherent = ps3_alloc_coherent, 681 .free_coherent = ps3_free_coherent, 682 .map_single = ps3_sb_map_single, 683 .unmap_single = ps3_unmap_single, 684 .map_sg = ps3_sb_map_sg, 685 .unmap_sg = ps3_sb_unmap_sg, 686 .dma_supported = ps3_dma_supported 687}; 688 689static struct dma_mapping_ops ps3_ioc0_dma_ops = { 690 .alloc_coherent = ps3_alloc_coherent, 691 .free_coherent = ps3_free_coherent, 692 .map_single = ps3_ioc0_map_single, 693 .unmap_single = ps3_unmap_single, 694 .map_sg = ps3_ioc0_map_sg, 695 .unmap_sg = ps3_ioc0_unmap_sg, 696 .dma_supported = ps3_dma_supported 697}; 698 699/** 700 * ps3_system_bus_release_device - remove a device from the system bus 701 */ 702 703static void ps3_system_bus_release_device(struct device *_dev) 704{ 705 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 706 kfree(dev); 707} 708 709/** 710 * ps3_system_bus_device_register - add a device to the system bus 711 * 712 * ps3_system_bus_device_register() expects the dev object to be allocated 713 * dynamically by the caller. The system bus takes ownership of the dev 714 * object and frees the object in ps3_system_bus_release_device(). 715 */ 716 717int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) 718{ 719 int result; 720 static unsigned int dev_ioc0_count; 721 static unsigned int dev_sb_count; 722 static unsigned int dev_vuart_count; 723 static unsigned int dev_lpm_count; 724 725 if (!dev->core.parent) 726 dev->core.parent = &ps3_system_bus; 727 dev->core.bus = &ps3_system_bus_type; 728 dev->core.release = ps3_system_bus_release_device; 729 730 switch (dev->dev_type) { 731 case PS3_DEVICE_TYPE_IOC0: 732 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops; 733 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 734 "ioc0_%02x", ++dev_ioc0_count); 735 break; 736 case PS3_DEVICE_TYPE_SB: 737 dev->core.archdata.dma_ops = &ps3_sb_dma_ops; 738 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 739 "sb_%02x", ++dev_sb_count); 740 741 break; 742 case PS3_DEVICE_TYPE_VUART: 743 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 744 "vuart_%02x", ++dev_vuart_count); 745 break; 746 case PS3_DEVICE_TYPE_LPM: 747 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), 748 "lpm_%02x", ++dev_lpm_count); 749 break; 750 default: 751 BUG(); 752 }; 753 754 dev->core.archdata.of_node = NULL; 755 dev->core.archdata.numa_node = 0; 756 757 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev->core.bus_id); 758 759 result = device_register(&dev->core); 760 return result; 761} 762 763EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); 764 765int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) 766{ 767 int result; 768 769 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 770 771 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 772 return -ENODEV; 773 774 drv->core.bus = &ps3_system_bus_type; 775 776 result = driver_register(&drv->core); 777 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 778 return result; 779} 780 781EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); 782 783void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) 784{ 785 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 786 driver_unregister(&drv->core); 787 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 788} 789 790EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); 791