system-bus.c revision b17b3df161814c43c03dbc8dbf8d32741bb30ba4
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 .init_name = "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_GPU: 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_GPU: 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 u64 lpar_addr; 254 255 result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id, 256 r->bus_addr, r->len, r->page_size, &lpar_addr); 257 r->lpar_addr = lpar_addr; 258 259 if (result) { 260 pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n", 261 __func__, __LINE__, ps3_result(result)); 262 r->lpar_addr = 0; 263 } 264 265 dump_mmio_region(r); 266 return result; 267} 268 269static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r) 270{ 271 /* device specific; do nothing currently */ 272 return 0; 273} 274 275int ps3_mmio_region_create(struct ps3_mmio_region *r) 276{ 277 return r->mmio_ops->create(r); 278} 279EXPORT_SYMBOL_GPL(ps3_mmio_region_create); 280 281static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r) 282{ 283 int result; 284 285 dump_mmio_region(r); 286; 287 result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id, 288 r->lpar_addr); 289 290 if (result) 291 pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n", 292 __func__, __LINE__, ps3_result(result)); 293 294 r->lpar_addr = 0; 295 return result; 296} 297 298static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r) 299{ 300 /* device specific; do nothing currently */ 301 return 0; 302} 303 304 305int ps3_free_mmio_region(struct ps3_mmio_region *r) 306{ 307 return r->mmio_ops->free(r); 308} 309 310EXPORT_SYMBOL_GPL(ps3_free_mmio_region); 311 312static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = { 313 .create = ps3_sb_mmio_region_create, 314 .free = ps3_sb_free_mmio_region 315}; 316 317static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = { 318 .create = ps3_ioc0_mmio_region_create, 319 .free = ps3_ioc0_free_mmio_region 320}; 321 322int ps3_mmio_region_init(struct ps3_system_bus_device *dev, 323 struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len, 324 enum ps3_mmio_page_size page_size) 325{ 326 r->dev = dev; 327 r->bus_addr = bus_addr; 328 r->len = len; 329 r->page_size = page_size; 330 switch (dev->dev_type) { 331 case PS3_DEVICE_TYPE_SB: 332 r->mmio_ops = &ps3_mmio_sb_region_ops; 333 break; 334 case PS3_DEVICE_TYPE_IOC0: 335 r->mmio_ops = &ps3_mmio_ioc0_region_ops; 336 break; 337 default: 338 BUG(); 339 return -EINVAL; 340 } 341 return 0; 342} 343EXPORT_SYMBOL_GPL(ps3_mmio_region_init); 344 345static int ps3_system_bus_match(struct device *_dev, 346 struct device_driver *_drv) 347{ 348 int result; 349 struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv); 350 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 351 352 if (!dev->match_sub_id) 353 result = dev->match_id == drv->match_id; 354 else 355 result = dev->match_sub_id == drv->match_sub_id && 356 dev->match_id == drv->match_id; 357 358 if (result) 359 pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n", 360 __func__, __LINE__, 361 dev->match_id, dev->match_sub_id, dev_name(&dev->core), 362 drv->match_id, drv->match_sub_id, drv->core.name); 363 else 364 pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n", 365 __func__, __LINE__, 366 dev->match_id, dev->match_sub_id, dev_name(&dev->core), 367 drv->match_id, drv->match_sub_id, drv->core.name); 368 369 return result; 370} 371 372static int ps3_system_bus_probe(struct device *_dev) 373{ 374 int result = 0; 375 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 376 struct ps3_system_bus_driver *drv; 377 378 BUG_ON(!dev); 379 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); 380 381 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 382 BUG_ON(!drv); 383 384 if (drv->probe) 385 result = drv->probe(dev); 386 else 387 pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__, 388 dev_name(&dev->core)); 389 390 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); 391 return result; 392} 393 394static int ps3_system_bus_remove(struct device *_dev) 395{ 396 int result = 0; 397 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 398 struct ps3_system_bus_driver *drv; 399 400 BUG_ON(!dev); 401 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id); 402 403 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 404 BUG_ON(!drv); 405 406 if (drv->remove) 407 result = drv->remove(dev); 408 else 409 dev_dbg(&dev->core, "%s:%d %s: no remove method\n", 410 __func__, __LINE__, drv->core.name); 411 412 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); 413 return result; 414} 415 416static void ps3_system_bus_shutdown(struct device *_dev) 417{ 418 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 419 struct ps3_system_bus_driver *drv; 420 421 BUG_ON(!dev); 422 423 dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, 424 dev->match_id); 425 426 if (!dev->core.driver) { 427 dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, 428 __LINE__); 429 return; 430 } 431 432 drv = ps3_system_bus_dev_to_system_bus_drv(dev); 433 434 BUG_ON(!drv); 435 436 dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__, 437 dev_name(&dev->core), drv->core.name); 438 439 if (drv->shutdown) 440 drv->shutdown(dev); 441 else if (drv->remove) { 442 dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n", 443 __func__, __LINE__, drv->core.name); 444 drv->remove(dev); 445 } else { 446 dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n", 447 __func__, __LINE__, drv->core.name); 448 BUG(); 449 } 450 451 dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); 452} 453 454static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) 455{ 456 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 457 458 if (add_uevent_var(env, "MODALIAS=ps3:%d:%d", dev->match_id, 459 dev->match_sub_id)) 460 return -ENOMEM; 461 return 0; 462} 463 464static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, 465 char *buf) 466{ 467 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 468 int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id, 469 dev->match_sub_id); 470 471 return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; 472} 473 474static struct device_attribute ps3_system_bus_dev_attrs[] = { 475 __ATTR_RO(modalias), 476 __ATTR_NULL, 477}; 478 479struct bus_type ps3_system_bus_type = { 480 .name = "ps3_system_bus", 481 .match = ps3_system_bus_match, 482 .uevent = ps3_system_bus_uevent, 483 .probe = ps3_system_bus_probe, 484 .remove = ps3_system_bus_remove, 485 .shutdown = ps3_system_bus_shutdown, 486 .dev_attrs = ps3_system_bus_dev_attrs, 487}; 488 489static int __init ps3_system_bus_init(void) 490{ 491 int result; 492 493 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 494 return -ENODEV; 495 496 pr_debug(" -> %s:%d\n", __func__, __LINE__); 497 498 mutex_init(&usage_hack.mutex); 499 500 result = device_register(&ps3_system_bus); 501 BUG_ON(result); 502 503 result = bus_register(&ps3_system_bus_type); 504 BUG_ON(result); 505 506 pr_debug(" <- %s:%d\n", __func__, __LINE__); 507 return result; 508} 509 510core_initcall(ps3_system_bus_init); 511 512/* Allocates a contiguous real buffer and creates mappings over it. 513 * Returns the virtual address of the buffer and sets dma_handle 514 * to the dma address (mapping) of the first page. 515 */ 516static void * ps3_alloc_coherent(struct device *_dev, size_t size, 517 dma_addr_t *dma_handle, gfp_t flag) 518{ 519 int result; 520 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 521 unsigned long virt_addr; 522 523 flag &= ~(__GFP_DMA | __GFP_HIGHMEM); 524 flag |= __GFP_ZERO; 525 526 virt_addr = __get_free_pages(flag, get_order(size)); 527 528 if (!virt_addr) { 529 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); 530 goto clean_none; 531 } 532 533 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, 534 IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M); 535 536 if (result) { 537 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 538 __func__, __LINE__, result); 539 BUG_ON("check region type"); 540 goto clean_alloc; 541 } 542 543 return (void*)virt_addr; 544 545clean_alloc: 546 free_pages(virt_addr, get_order(size)); 547clean_none: 548 dma_handle = NULL; 549 return NULL; 550} 551 552static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, 553 dma_addr_t dma_handle) 554{ 555 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 556 557 ps3_dma_unmap(dev->d_region, dma_handle, size); 558 free_pages((unsigned long)vaddr, get_order(size)); 559} 560 561/* Creates TCEs for a user provided buffer. The user buffer must be 562 * contiguous real kernel storage (not vmalloc). The address passed here 563 * comprises a page address and offset into that page. The dma_addr_t 564 * returned will point to the same byte within the page as was passed in. 565 */ 566 567static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, 568 unsigned long offset, size_t size, enum dma_data_direction direction, 569 struct dma_attrs *attrs) 570{ 571 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 572 int result; 573 dma_addr_t bus_addr; 574 void *ptr = page_address(page) + offset; 575 576 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 577 &bus_addr, 578 IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M); 579 580 if (result) { 581 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 582 __func__, __LINE__, result); 583 } 584 585 return bus_addr; 586} 587 588static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, 589 unsigned long offset, size_t size, 590 enum dma_data_direction direction, 591 struct dma_attrs *attrs) 592{ 593 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 594 int result; 595 dma_addr_t bus_addr; 596 u64 iopte_flag; 597 void *ptr = page_address(page) + offset; 598 599 iopte_flag = IOPTE_M; 600 switch (direction) { 601 case DMA_BIDIRECTIONAL: 602 iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW; 603 break; 604 case DMA_TO_DEVICE: 605 iopte_flag |= IOPTE_PP_R | IOPTE_SO_R; 606 break; 607 case DMA_FROM_DEVICE: 608 iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW; 609 break; 610 default: 611 /* not happned */ 612 BUG(); 613 }; 614 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 615 &bus_addr, iopte_flag); 616 617 if (result) { 618 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 619 __func__, __LINE__, result); 620 } 621 return bus_addr; 622} 623 624static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, 625 size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) 626{ 627 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 628 int result; 629 630 result = ps3_dma_unmap(dev->d_region, dma_addr, size); 631 632 if (result) { 633 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", 634 __func__, __LINE__, result); 635 } 636} 637 638static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, 639 int nents, enum dma_data_direction direction, struct dma_attrs *attrs) 640{ 641#if defined(CONFIG_PS3_DYNAMIC_DMA) 642 BUG_ON("do"); 643 return -EPERM; 644#else 645 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 646 struct scatterlist *sg; 647 int i; 648 649 for_each_sg(sgl, sg, nents, i) { 650 int result = ps3_dma_map(dev->d_region, sg_phys(sg), 651 sg->length, &sg->dma_address, 0); 652 653 if (result) { 654 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 655 __func__, __LINE__, result); 656 return -EINVAL; 657 } 658 659 sg->dma_length = sg->length; 660 } 661 662 return nents; 663#endif 664} 665 666static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, 667 int nents, 668 enum dma_data_direction direction, 669 struct dma_attrs *attrs) 670{ 671 BUG(); 672 return 0; 673} 674 675static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, 676 int nents, enum dma_data_direction direction, struct dma_attrs *attrs) 677{ 678#if defined(CONFIG_PS3_DYNAMIC_DMA) 679 BUG_ON("do"); 680#endif 681} 682 683static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, 684 int nents, enum dma_data_direction direction, 685 struct dma_attrs *attrs) 686{ 687 BUG(); 688} 689 690static int ps3_dma_supported(struct device *_dev, u64 mask) 691{ 692 return mask >= DMA_32BIT_MASK; 693} 694 695static struct dma_mapping_ops ps3_sb_dma_ops = { 696 .alloc_coherent = ps3_alloc_coherent, 697 .free_coherent = ps3_free_coherent, 698 .map_sg = ps3_sb_map_sg, 699 .unmap_sg = ps3_sb_unmap_sg, 700 .dma_supported = ps3_dma_supported, 701 .map_page = ps3_sb_map_page, 702 .unmap_page = ps3_unmap_page, 703}; 704 705static struct dma_mapping_ops ps3_ioc0_dma_ops = { 706 .alloc_coherent = ps3_alloc_coherent, 707 .free_coherent = ps3_free_coherent, 708 .map_sg = ps3_ioc0_map_sg, 709 .unmap_sg = ps3_ioc0_unmap_sg, 710 .dma_supported = ps3_dma_supported, 711 .map_page = ps3_ioc0_map_page, 712 .unmap_page = ps3_unmap_page, 713}; 714 715/** 716 * ps3_system_bus_release_device - remove a device from the system bus 717 */ 718 719static void ps3_system_bus_release_device(struct device *_dev) 720{ 721 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 722 kfree(dev); 723} 724 725/** 726 * ps3_system_bus_device_register - add a device to the system bus 727 * 728 * ps3_system_bus_device_register() expects the dev object to be allocated 729 * dynamically by the caller. The system bus takes ownership of the dev 730 * object and frees the object in ps3_system_bus_release_device(). 731 */ 732 733int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) 734{ 735 int result; 736 static unsigned int dev_ioc0_count; 737 static unsigned int dev_sb_count; 738 static unsigned int dev_vuart_count; 739 static unsigned int dev_lpm_count; 740 741 if (!dev->core.parent) 742 dev->core.parent = &ps3_system_bus; 743 dev->core.bus = &ps3_system_bus_type; 744 dev->core.release = ps3_system_bus_release_device; 745 746 switch (dev->dev_type) { 747 case PS3_DEVICE_TYPE_IOC0: 748 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops; 749 dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count); 750 break; 751 case PS3_DEVICE_TYPE_SB: 752 dev->core.archdata.dma_ops = &ps3_sb_dma_ops; 753 dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count); 754 755 break; 756 case PS3_DEVICE_TYPE_VUART: 757 dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count); 758 break; 759 case PS3_DEVICE_TYPE_LPM: 760 dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count); 761 break; 762 default: 763 BUG(); 764 }; 765 766 dev->core.archdata.of_node = NULL; 767 set_dev_node(&dev->core, 0); 768 769 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core)); 770 771 result = device_register(&dev->core); 772 return result; 773} 774 775EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); 776 777int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) 778{ 779 int result; 780 781 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 782 783 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 784 return -ENODEV; 785 786 drv->core.bus = &ps3_system_bus_type; 787 788 result = driver_register(&drv->core); 789 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 790 return result; 791} 792 793EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); 794 795void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) 796{ 797 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 798 driver_unregister(&drv->core); 799 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 800} 801 802EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); 803