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 35static struct device ps3_system_bus = { 36 .init_name = "ps3_system", 37}; 38 39/* FIXME: need device usage counters! */ 40struct { 41 struct mutex mutex; 42 int sb_11; /* usb 0 */ 43 int sb_12; /* usb 0 */ 44 int gpu; 45} static usage_hack; 46 47static 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 53static 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 84done: 85 mutex_unlock(&usage_hack.mutex); 86 return result; 87} 88 89static 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 115done: 116 mutex_unlock(&usage_hack.mutex); 117 return result; 118} 119 120static 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 140done: 141 mutex_unlock(&usage_hack.mutex); 142 return result; 143} 144 145static 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 160done: 161 mutex_unlock(&usage_hack.mutex); 162 return result; 163} 164 165int 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} 201EXPORT_SYMBOL_GPL(ps3_open_hv_device); 202 203int 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} 239EXPORT_SYMBOL_GPL(ps3_close_hv_device); 240 241#define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__) 242static 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 252static 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 271static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r) 272{ 273 /* device specific; do nothing currently */ 274 return 0; 275} 276 277int ps3_mmio_region_create(struct ps3_mmio_region *r) 278{ 279 return r->mmio_ops->create(r); 280} 281EXPORT_SYMBOL_GPL(ps3_mmio_region_create); 282 283static 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 299static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r) 300{ 301 /* device specific; do nothing currently */ 302 return 0; 303} 304 305 306int ps3_free_mmio_region(struct ps3_mmio_region *r) 307{ 308 return r->mmio_ops->free(r); 309} 310 311EXPORT_SYMBOL_GPL(ps3_free_mmio_region); 312 313static 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 318static 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 323int 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} 344EXPORT_SYMBOL_GPL(ps3_mmio_region_init); 345 346static 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 373static 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 395static 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 417static 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 455static 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 465static 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 475static struct device_attribute ps3_system_bus_dev_attrs[] = { 476 __ATTR_RO(modalias), 477 __ATTR_NULL, 478}; 479 480struct 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 490static 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 511core_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 */ 517static void * ps3_alloc_coherent(struct device *_dev, size_t size, 518 dma_addr_t *dma_handle, gfp_t flag, 519 struct dma_attrs *attrs) 520{ 521 int result; 522 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 523 unsigned long virt_addr; 524 525 flag &= ~(__GFP_DMA | __GFP_HIGHMEM); 526 flag |= __GFP_ZERO; 527 528 virt_addr = __get_free_pages(flag, get_order(size)); 529 530 if (!virt_addr) { 531 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); 532 goto clean_none; 533 } 534 535 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, 536 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | 537 CBE_IOPTE_SO_RW | CBE_IOPTE_M); 538 539 if (result) { 540 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 541 __func__, __LINE__, result); 542 BUG_ON("check region type"); 543 goto clean_alloc; 544 } 545 546 return (void*)virt_addr; 547 548clean_alloc: 549 free_pages(virt_addr, get_order(size)); 550clean_none: 551 dma_handle = NULL; 552 return NULL; 553} 554 555static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, 556 dma_addr_t dma_handle, struct dma_attrs *attrs) 557{ 558 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 559 560 ps3_dma_unmap(dev->d_region, dma_handle, size); 561 free_pages((unsigned long)vaddr, get_order(size)); 562} 563 564/* Creates TCEs for a user provided buffer. The user buffer must be 565 * contiguous real kernel storage (not vmalloc). The address passed here 566 * comprises a page address and offset into that page. The dma_addr_t 567 * returned will point to the same byte within the page as was passed in. 568 */ 569 570static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, 571 unsigned long offset, size_t size, enum dma_data_direction direction, 572 struct dma_attrs *attrs) 573{ 574 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 575 int result; 576 dma_addr_t bus_addr; 577 void *ptr = page_address(page) + offset; 578 579 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 580 &bus_addr, 581 CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | 582 CBE_IOPTE_SO_RW | CBE_IOPTE_M); 583 584 if (result) { 585 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 586 __func__, __LINE__, result); 587 } 588 589 return bus_addr; 590} 591 592static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, 593 unsigned long offset, size_t size, 594 enum dma_data_direction direction, 595 struct dma_attrs *attrs) 596{ 597 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 598 int result; 599 dma_addr_t bus_addr; 600 u64 iopte_flag; 601 void *ptr = page_address(page) + offset; 602 603 iopte_flag = CBE_IOPTE_M; 604 switch (direction) { 605 case DMA_BIDIRECTIONAL: 606 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; 607 break; 608 case DMA_TO_DEVICE: 609 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_SO_R; 610 break; 611 case DMA_FROM_DEVICE: 612 iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; 613 break; 614 default: 615 /* not happned */ 616 BUG(); 617 }; 618 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, 619 &bus_addr, iopte_flag); 620 621 if (result) { 622 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 623 __func__, __LINE__, result); 624 } 625 return bus_addr; 626} 627 628static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, 629 size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) 630{ 631 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 632 int result; 633 634 result = ps3_dma_unmap(dev->d_region, dma_addr, size); 635 636 if (result) { 637 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", 638 __func__, __LINE__, result); 639 } 640} 641 642static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, 643 int nents, enum dma_data_direction direction, struct dma_attrs *attrs) 644{ 645#if defined(CONFIG_PS3_DYNAMIC_DMA) 646 BUG_ON("do"); 647 return -EPERM; 648#else 649 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 650 struct scatterlist *sg; 651 int i; 652 653 for_each_sg(sgl, sg, nents, i) { 654 int result = ps3_dma_map(dev->d_region, sg_phys(sg), 655 sg->length, &sg->dma_address, 0); 656 657 if (result) { 658 pr_debug("%s:%d: ps3_dma_map failed (%d)\n", 659 __func__, __LINE__, result); 660 return -EINVAL; 661 } 662 663 sg->dma_length = sg->length; 664 } 665 666 return nents; 667#endif 668} 669 670static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, 671 int nents, 672 enum dma_data_direction direction, 673 struct dma_attrs *attrs) 674{ 675 BUG(); 676 return 0; 677} 678 679static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, 680 int nents, enum dma_data_direction direction, struct dma_attrs *attrs) 681{ 682#if defined(CONFIG_PS3_DYNAMIC_DMA) 683 BUG_ON("do"); 684#endif 685} 686 687static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, 688 int nents, enum dma_data_direction direction, 689 struct dma_attrs *attrs) 690{ 691 BUG(); 692} 693 694static int ps3_dma_supported(struct device *_dev, u64 mask) 695{ 696 return mask >= DMA_BIT_MASK(32); 697} 698 699static u64 ps3_dma_get_required_mask(struct device *_dev) 700{ 701 return DMA_BIT_MASK(32); 702} 703 704static struct dma_map_ops ps3_sb_dma_ops = { 705 .alloc = ps3_alloc_coherent, 706 .free = ps3_free_coherent, 707 .map_sg = ps3_sb_map_sg, 708 .unmap_sg = ps3_sb_unmap_sg, 709 .dma_supported = ps3_dma_supported, 710 .get_required_mask = ps3_dma_get_required_mask, 711 .map_page = ps3_sb_map_page, 712 .unmap_page = ps3_unmap_page, 713}; 714 715static struct dma_map_ops ps3_ioc0_dma_ops = { 716 .alloc = ps3_alloc_coherent, 717 .free = ps3_free_coherent, 718 .map_sg = ps3_ioc0_map_sg, 719 .unmap_sg = ps3_ioc0_unmap_sg, 720 .dma_supported = ps3_dma_supported, 721 .get_required_mask = ps3_dma_get_required_mask, 722 .map_page = ps3_ioc0_map_page, 723 .unmap_page = ps3_unmap_page, 724}; 725 726/** 727 * ps3_system_bus_release_device - remove a device from the system bus 728 */ 729 730static void ps3_system_bus_release_device(struct device *_dev) 731{ 732 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); 733 kfree(dev); 734} 735 736/** 737 * ps3_system_bus_device_register - add a device to the system bus 738 * 739 * ps3_system_bus_device_register() expects the dev object to be allocated 740 * dynamically by the caller. The system bus takes ownership of the dev 741 * object and frees the object in ps3_system_bus_release_device(). 742 */ 743 744int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) 745{ 746 int result; 747 static unsigned int dev_ioc0_count; 748 static unsigned int dev_sb_count; 749 static unsigned int dev_vuart_count; 750 static unsigned int dev_lpm_count; 751 752 if (!dev->core.parent) 753 dev->core.parent = &ps3_system_bus; 754 dev->core.bus = &ps3_system_bus_type; 755 dev->core.release = ps3_system_bus_release_device; 756 757 switch (dev->dev_type) { 758 case PS3_DEVICE_TYPE_IOC0: 759 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops; 760 dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count); 761 break; 762 case PS3_DEVICE_TYPE_SB: 763 dev->core.archdata.dma_ops = &ps3_sb_dma_ops; 764 dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count); 765 766 break; 767 case PS3_DEVICE_TYPE_VUART: 768 dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count); 769 break; 770 case PS3_DEVICE_TYPE_LPM: 771 dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count); 772 break; 773 default: 774 BUG(); 775 }; 776 777 dev->core.of_node = NULL; 778 set_dev_node(&dev->core, 0); 779 780 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core)); 781 782 result = device_register(&dev->core); 783 return result; 784} 785 786EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); 787 788int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) 789{ 790 int result; 791 792 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 793 794 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 795 return -ENODEV; 796 797 drv->core.bus = &ps3_system_bus_type; 798 799 result = driver_register(&drv->core); 800 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 801 return result; 802} 803 804EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); 805 806void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) 807{ 808 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); 809 driver_unregister(&drv->core); 810 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); 811} 812 813EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); 814