1 /* 2 * ps3vram - Use extra PS3 video ram as MTD block device. 3 * 4 * Copyright 2009 Sony Corporation 5 * 6 * Based on the MTD ps3vram driver, which is 7 * Copyright (c) 2007-2008 Jim Paris <jim@jtan.com> 8 * Added support RSX DMA Vivien Chappelier <vivien.chappelier@free.fr> 9 */ 10 11 #include <linux/blkdev.h> 12 #include <linux/delay.h> 13 #include <linux/proc_fs.h> 14 #include <linux/seq_file.h> 15 16 #include <asm/cell-regs.h> 17 #include <asm/firmware.h> 18 #include <asm/lv1call.h> 19 #include <asm/ps3.h> 20 #include <asm/ps3gpu.h> 21 22 23 #define DEVICE_NAME "ps3vram" 24 25 26 #define XDR_BUF_SIZE (2 * 1024 * 1024) /* XDR buffer (must be 1MiB aligned) */ 27 #define XDR_IOIF 0x0c000000 28 29 #define FIFO_BASE XDR_IOIF 30 #define FIFO_SIZE (64 * 1024) 31 32 #define DMA_PAGE_SIZE (4 * 1024) 33 34 #define CACHE_PAGE_SIZE (256 * 1024) 35 #define CACHE_PAGE_COUNT ((XDR_BUF_SIZE - FIFO_SIZE) / CACHE_PAGE_SIZE) 36 37 #define CACHE_OFFSET CACHE_PAGE_SIZE 38 #define FIFO_OFFSET 0 39 40 #define CTRL_PUT 0x10 41 #define CTRL_GET 0x11 42 #define CTRL_TOP 0x15 43 44 #define UPLOAD_SUBCH 1 45 #define DOWNLOAD_SUBCH 2 46 47 #define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c 48 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104 49 50 #define CACHE_PAGE_PRESENT 1 51 #define CACHE_PAGE_DIRTY 2 52 53 struct ps3vram_tag { 54 unsigned int address; 55 unsigned int flags; 56 }; 57 58 struct ps3vram_cache { 59 unsigned int page_count; 60 unsigned int page_size; 61 struct ps3vram_tag *tags; 62 unsigned int hit; 63 unsigned int miss; 64 }; 65 66 struct ps3vram_priv { 67 struct request_queue *queue; 68 struct gendisk *gendisk; 69 70 u64 size; 71 72 u64 memory_handle; 73 u64 context_handle; 74 u32 *ctrl; 75 void *reports; 76 u8 *xdr_buf; 77 78 u32 *fifo_base; 79 u32 *fifo_ptr; 80 81 struct ps3vram_cache cache; 82 83 spinlock_t lock; /* protecting list of bios */ 84 struct bio_list list; 85 }; 86 87 88 static int ps3vram_major; 89 90 91 static const struct block_device_operations ps3vram_fops = { 92 .owner = THIS_MODULE, 93 }; 94 95 96 #define DMA_NOTIFIER_HANDLE_BASE 0x66604200 /* first DMA notifier handle */ 97 #define DMA_NOTIFIER_OFFSET_BASE 0x1000 /* first DMA notifier offset */ 98 #define DMA_NOTIFIER_SIZE 0x40 99 #define NOTIFIER 7 /* notifier used for completion report */ 100 101 static char *size = "256M"; 102 module_param(size, charp, 0); 103 MODULE_PARM_DESC(size, "memory size"); 104 105 static u32 *ps3vram_get_notifier(void *reports, int notifier) 106 { 107 return reports + DMA_NOTIFIER_OFFSET_BASE + 108 DMA_NOTIFIER_SIZE * notifier; 109 } 110 111 static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev) 112 { 113 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 114 u32 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); 115 int i; 116 117 for (i = 0; i < 4; i++) 118 notify[i] = 0xffffffff; 119 } 120 121 static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev, 122 unsigned int timeout_ms) 123 { 124 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 125 u32 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); 126 unsigned long timeout; 127 128 for (timeout = 20; timeout; timeout--) { 129 if (!notify[3]) 130 return 0; 131 udelay(10); 132 } 133 134 timeout = jiffies + msecs_to_jiffies(timeout_ms); 135 136 do { 137 if (!notify[3]) 138 return 0; 139 msleep(1); 140 } while (time_before(jiffies, timeout)); 141 142 return -ETIMEDOUT; 143 } 144 145 static void ps3vram_init_ring(struct ps3_system_bus_device *dev) 146 { 147 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 148 149 priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; 150 priv->ctrl[CTRL_GET] = FIFO_BASE + FIFO_OFFSET; 151 } 152 153 static int ps3vram_wait_ring(struct ps3_system_bus_device *dev, 154 unsigned int timeout_ms) 155 { 156 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 157 unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); 158 159 do { 160 if (priv->ctrl[CTRL_PUT] == priv->ctrl[CTRL_GET]) 161 return 0; 162 msleep(1); 163 } while (time_before(jiffies, timeout)); 164 165 dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n", 166 priv->ctrl[CTRL_PUT], priv->ctrl[CTRL_GET], 167 priv->ctrl[CTRL_TOP]); 168 169 return -ETIMEDOUT; 170 } 171 172 static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data) 173 { 174 *(priv->fifo_ptr)++ = data; 175 } 176 177 static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, u32 tag, 178 u32 size) 179 { 180 ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag); 181 } 182 183 static void ps3vram_rewind_ring(struct ps3_system_bus_device *dev) 184 { 185 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 186 int status; 187 188 ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET)); 189 190 priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; 191 192 /* asking the HV for a blit will kick the FIFO */ 193 status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); 194 if (status) 195 dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n", 196 __func__, status); 197 198 priv->fifo_ptr = priv->fifo_base; 199 } 200 201 static void ps3vram_fire_ring(struct ps3_system_bus_device *dev) 202 { 203 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 204 int status; 205 206 mutex_lock(&ps3_gpu_mutex); 207 208 priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET + 209 (priv->fifo_ptr - priv->fifo_base) * sizeof(u32); 210 211 /* asking the HV for a blit will kick the FIFO */ 212 status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); 213 if (status) 214 dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n", 215 __func__, status); 216 217 if ((priv->fifo_ptr - priv->fifo_base) * sizeof(u32) > 218 FIFO_SIZE - 1024) { 219 dev_dbg(&dev->core, "FIFO full, rewinding\n"); 220 ps3vram_wait_ring(dev, 200); 221 ps3vram_rewind_ring(dev); 222 } 223 224 mutex_unlock(&ps3_gpu_mutex); 225 } 226 227 static void ps3vram_bind(struct ps3_system_bus_device *dev) 228 { 229 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 230 231 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0, 1); 232 ps3vram_out_ring(priv, 0x31337303); 233 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x180, 3); 234 ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); 235 ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ 236 ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ 237 238 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0, 1); 239 ps3vram_out_ring(priv, 0x3137c0de); 240 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x180, 3); 241 ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); 242 ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ 243 ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ 244 245 ps3vram_fire_ring(dev); 246 } 247 248 static int ps3vram_upload(struct ps3_system_bus_device *dev, 249 unsigned int src_offset, unsigned int dst_offset, 250 int len, int count) 251 { 252 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 253 254 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 255 NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); 256 ps3vram_out_ring(priv, XDR_IOIF + src_offset); 257 ps3vram_out_ring(priv, dst_offset); 258 ps3vram_out_ring(priv, len); 259 ps3vram_out_ring(priv, len); 260 ps3vram_out_ring(priv, len); 261 ps3vram_out_ring(priv, count); 262 ps3vram_out_ring(priv, (1 << 8) | 1); 263 ps3vram_out_ring(priv, 0); 264 265 ps3vram_notifier_reset(dev); 266 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 267 NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); 268 ps3vram_out_ring(priv, 0); 269 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x100, 1); 270 ps3vram_out_ring(priv, 0); 271 ps3vram_fire_ring(dev); 272 if (ps3vram_notifier_wait(dev, 200) < 0) { 273 dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); 274 return -1; 275 } 276 277 return 0; 278 } 279 280 static int ps3vram_download(struct ps3_system_bus_device *dev, 281 unsigned int src_offset, unsigned int dst_offset, 282 int len, int count) 283 { 284 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 285 286 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 287 NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); 288 ps3vram_out_ring(priv, src_offset); 289 ps3vram_out_ring(priv, XDR_IOIF + dst_offset); 290 ps3vram_out_ring(priv, len); 291 ps3vram_out_ring(priv, len); 292 ps3vram_out_ring(priv, len); 293 ps3vram_out_ring(priv, count); 294 ps3vram_out_ring(priv, (1 << 8) | 1); 295 ps3vram_out_ring(priv, 0); 296 297 ps3vram_notifier_reset(dev); 298 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 299 NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); 300 ps3vram_out_ring(priv, 0); 301 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x100, 1); 302 ps3vram_out_ring(priv, 0); 303 ps3vram_fire_ring(dev); 304 if (ps3vram_notifier_wait(dev, 200) < 0) { 305 dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); 306 return -1; 307 } 308 309 return 0; 310 } 311 312 static void ps3vram_cache_evict(struct ps3_system_bus_device *dev, int entry) 313 { 314 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 315 struct ps3vram_cache *cache = &priv->cache; 316 317 if (!(cache->tags[entry].flags & CACHE_PAGE_DIRTY)) 318 return; 319 320 dev_dbg(&dev->core, "Flushing %d: 0x%08x\n", entry, 321 cache->tags[entry].address); 322 if (ps3vram_upload(dev, CACHE_OFFSET + entry * cache->page_size, 323 cache->tags[entry].address, DMA_PAGE_SIZE, 324 cache->page_size / DMA_PAGE_SIZE) < 0) { 325 dev_err(&dev->core, 326 "Failed to upload from 0x%x to " "0x%x size 0x%x\n", 327 entry * cache->page_size, cache->tags[entry].address, 328 cache->page_size); 329 } 330 cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY; 331 } 332 333 static void ps3vram_cache_load(struct ps3_system_bus_device *dev, int entry, 334 unsigned int address) 335 { 336 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 337 struct ps3vram_cache *cache = &priv->cache; 338 339 dev_dbg(&dev->core, "Fetching %d: 0x%08x\n", entry, address); 340 if (ps3vram_download(dev, address, 341 CACHE_OFFSET + entry * cache->page_size, 342 DMA_PAGE_SIZE, 343 cache->page_size / DMA_PAGE_SIZE) < 0) { 344 dev_err(&dev->core, 345 "Failed to download from 0x%x to 0x%x size 0x%x\n", 346 address, entry * cache->page_size, cache->page_size); 347 } 348 349 cache->tags[entry].address = address; 350 cache->tags[entry].flags |= CACHE_PAGE_PRESENT; 351 } 352 353 354 static void ps3vram_cache_flush(struct ps3_system_bus_device *dev) 355 { 356 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 357 struct ps3vram_cache *cache = &priv->cache; 358 int i; 359 360 dev_dbg(&dev->core, "FLUSH\n"); 361 for (i = 0; i < cache->page_count; i++) { 362 ps3vram_cache_evict(dev, i); 363 cache->tags[i].flags = 0; 364 } 365 } 366 367 static unsigned int ps3vram_cache_match(struct ps3_system_bus_device *dev, 368 loff_t address) 369 { 370 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 371 struct ps3vram_cache *cache = &priv->cache; 372 unsigned int base; 373 unsigned int offset; 374 int i; 375 static int counter; 376 377 offset = (unsigned int) (address & (cache->page_size - 1)); 378 base = (unsigned int) (address - offset); 379 380 /* fully associative check */ 381 for (i = 0; i < cache->page_count; i++) { 382 if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) && 383 cache->tags[i].address == base) { 384 cache->hit++; 385 dev_dbg(&dev->core, "Found entry %d: 0x%08x\n", i, 386 cache->tags[i].address); 387 return i; 388 } 389 } 390 391 /* choose a random entry */ 392 i = (jiffies + (counter++)) % cache->page_count; 393 dev_dbg(&dev->core, "Using entry %d\n", i); 394 395 ps3vram_cache_evict(dev, i); 396 ps3vram_cache_load(dev, i, base); 397 398 cache->miss++; 399 return i; 400 } 401 402 static int ps3vram_cache_init(struct ps3_system_bus_device *dev) 403 { 404 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 405 406 priv->cache.page_count = CACHE_PAGE_COUNT; 407 priv->cache.page_size = CACHE_PAGE_SIZE; 408 priv->cache.tags = kzalloc(sizeof(struct ps3vram_tag) * 409 CACHE_PAGE_COUNT, GFP_KERNEL); 410 if (priv->cache.tags == NULL) { 411 dev_err(&dev->core, "Could not allocate cache tags\n"); 412 return -ENOMEM; 413 } 414 415 dev_info(&dev->core, "Created ram cache: %d entries, %d KiB each\n", 416 CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024); 417 418 return 0; 419 } 420 421 static void ps3vram_cache_cleanup(struct ps3_system_bus_device *dev) 422 { 423 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 424 425 ps3vram_cache_flush(dev); 426 kfree(priv->cache.tags); 427 } 428 429 static int ps3vram_read(struct ps3_system_bus_device *dev, loff_t from, 430 size_t len, size_t *retlen, u_char *buf) 431 { 432 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 433 unsigned int cached, count; 434 435 dev_dbg(&dev->core, "%s: from=0x%08x len=0x%zx\n", __func__, 436 (unsigned int)from, len); 437 438 if (from >= priv->size) 439 return -EIO; 440 441 if (len > priv->size - from) 442 len = priv->size - from; 443 444 /* Copy from vram to buf */ 445 count = len; 446 while (count) { 447 unsigned int offset, avail; 448 unsigned int entry; 449 450 offset = (unsigned int) (from & (priv->cache.page_size - 1)); 451 avail = priv->cache.page_size - offset; 452 453 entry = ps3vram_cache_match(dev, from); 454 cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; 455 456 dev_dbg(&dev->core, "%s: from=%08x cached=%08x offset=%08x " 457 "avail=%08x count=%08x\n", __func__, 458 (unsigned int)from, cached, offset, avail, count); 459 460 if (avail > count) 461 avail = count; 462 memcpy(buf, priv->xdr_buf + cached, avail); 463 464 buf += avail; 465 count -= avail; 466 from += avail; 467 } 468 469 *retlen = len; 470 return 0; 471 } 472 473 static int ps3vram_write(struct ps3_system_bus_device *dev, loff_t to, 474 size_t len, size_t *retlen, const u_char *buf) 475 { 476 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 477 unsigned int cached, count; 478 479 if (to >= priv->size) 480 return -EIO; 481 482 if (len > priv->size - to) 483 len = priv->size - to; 484 485 /* Copy from buf to vram */ 486 count = len; 487 while (count) { 488 unsigned int offset, avail; 489 unsigned int entry; 490 491 offset = (unsigned int) (to & (priv->cache.page_size - 1)); 492 avail = priv->cache.page_size - offset; 493 494 entry = ps3vram_cache_match(dev, to); 495 cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; 496 497 dev_dbg(&dev->core, "%s: to=%08x cached=%08x offset=%08x " 498 "avail=%08x count=%08x\n", __func__, (unsigned int)to, 499 cached, offset, avail, count); 500 501 if (avail > count) 502 avail = count; 503 memcpy(priv->xdr_buf + cached, buf, avail); 504 505 priv->cache.tags[entry].flags |= CACHE_PAGE_DIRTY; 506 507 buf += avail; 508 count -= avail; 509 to += avail; 510 } 511 512 *retlen = len; 513 return 0; 514 } 515 516 static int ps3vram_proc_show(struct seq_file *m, void *v) 517 { 518 struct ps3vram_priv *priv = m->private; 519 520 seq_printf(m, "hit:%u\nmiss:%u\n", priv->cache.hit, priv->cache.miss); 521 return 0; 522 } 523 524 static int ps3vram_proc_open(struct inode *inode, struct file *file) 525 { 526 return single_open(file, ps3vram_proc_show, PDE(inode)->data); 527 } 528 529 static const struct file_operations ps3vram_proc_fops = { 530 .owner = THIS_MODULE, 531 .open = ps3vram_proc_open, 532 .read = seq_read, 533 .llseek = seq_lseek, 534 .release = single_release, 535 }; 536 537 static void __devinit ps3vram_proc_init(struct ps3_system_bus_device *dev) 538 { 539 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 540 struct proc_dir_entry *pde; 541 542 pde = proc_create_data(DEVICE_NAME, 0444, NULL, &ps3vram_proc_fops, 543 priv); 544 if (!pde) 545 dev_warn(&dev->core, "failed to create /proc entry\n"); 546 } 547 548 static struct bio *ps3vram_do_bio(struct ps3_system_bus_device *dev, 549 struct bio *bio) 550 { 551 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 552 int write = bio_data_dir(bio) == WRITE; 553 const char *op = write ? "write" : "read"; 554 loff_t offset = bio->bi_sector << 9; 555 int error = 0; 556 struct bio_vec *bvec; 557 unsigned int i; 558 struct bio *next; 559 560 bio_for_each_segment(bvec, bio, i) { 561 /* PS3 is ppc64, so we don't handle highmem */ 562 char *ptr = page_address(bvec->bv_page) + bvec->bv_offset; 563 size_t len = bvec->bv_len, retlen; 564 565 dev_dbg(&dev->core, " %s %zu bytes at offset %llu\n", op, 566 len, offset); 567 if (write) 568 error = ps3vram_write(dev, offset, len, &retlen, ptr); 569 else 570 error = ps3vram_read(dev, offset, len, &retlen, ptr); 571 572 if (error) { 573 dev_err(&dev->core, "%s failed\n", op); 574 goto out; 575 } 576 577 if (retlen != len) { 578 dev_err(&dev->core, "Short %s\n", op); 579 error = -EIO; 580 goto out; 581 } 582 583 offset += len; 584 } 585 586 dev_dbg(&dev->core, "%s completed\n", op); 587 588 out: 589 spin_lock_irq(&priv->lock); 590 bio_list_pop(&priv->list); 591 next = bio_list_peek(&priv->list); 592 spin_unlock_irq(&priv->lock); 593 594 bio_endio(bio, error); 595 return next; 596 } 597 598 static int ps3vram_make_request(struct request_queue *q, struct bio *bio) 599 { 600 struct ps3_system_bus_device *dev = q->queuedata; 601 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 602 int busy; 603 604 dev_dbg(&dev->core, "%s\n", __func__); 605 606 spin_lock_irq(&priv->lock); 607 busy = !bio_list_empty(&priv->list); 608 bio_list_add(&priv->list, bio); 609 spin_unlock_irq(&priv->lock); 610 611 if (busy) 612 return 0; 613 614 do { 615 bio = ps3vram_do_bio(dev, bio); 616 } while (bio); 617 618 return 0; 619 } 620 621 static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev) 622 { 623 struct ps3vram_priv *priv; 624 int error, status; 625 struct request_queue *queue; 626 struct gendisk *gendisk; 627 u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar, 628 reports_size, xdr_lpar; 629 char *rest; 630 631 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 632 if (!priv) { 633 error = -ENOMEM; 634 goto fail; 635 } 636 637 spin_lock_init(&priv->lock); 638 bio_list_init(&priv->list); 639 ps3_system_bus_set_drvdata(dev, priv); 640 641 /* Allocate XDR buffer (1MiB aligned) */ 642 priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL, 643 get_order(XDR_BUF_SIZE)); 644 if (priv->xdr_buf == NULL) { 645 dev_err(&dev->core, "Could not allocate XDR buffer\n"); 646 error = -ENOMEM; 647 goto fail_free_priv; 648 } 649 650 /* Put FIFO at begginning of XDR buffer */ 651 priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET); 652 priv->fifo_ptr = priv->fifo_base; 653 654 /* XXX: Need to open GPU, in case ps3fb or snd_ps3 aren't loaded */ 655 if (ps3_open_hv_device(dev)) { 656 dev_err(&dev->core, "ps3_open_hv_device failed\n"); 657 error = -EAGAIN; 658 goto out_free_xdr_buf; 659 } 660 661 /* Request memory */ 662 status = -1; 663 ddr_size = ALIGN(memparse(size, &rest), 1024*1024); 664 if (!ddr_size) { 665 dev_err(&dev->core, "Specified size is too small\n"); 666 error = -EINVAL; 667 goto out_close_gpu; 668 } 669 670 while (ddr_size > 0) { 671 status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0, 672 &priv->memory_handle, 673 &ddr_lpar); 674 if (!status) 675 break; 676 ddr_size -= 1024*1024; 677 } 678 if (status) { 679 dev_err(&dev->core, "lv1_gpu_memory_allocate failed %d\n", 680 status); 681 error = -ENOMEM; 682 goto out_close_gpu; 683 } 684 685 /* Request context */ 686 status = lv1_gpu_context_allocate(priv->memory_handle, 0, 687 &priv->context_handle, &ctrl_lpar, 688 &info_lpar, &reports_lpar, 689 &reports_size); 690 if (status) { 691 dev_err(&dev->core, "lv1_gpu_context_allocate failed %d\n", 692 status); 693 error = -ENOMEM; 694 goto out_free_memory; 695 } 696 697 /* Map XDR buffer to RSX */ 698 xdr_lpar = ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)); 699 status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, 700 xdr_lpar, XDR_BUF_SIZE, 701 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | 702 CBE_IOPTE_M); 703 if (status) { 704 dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n", 705 status); 706 error = -ENOMEM; 707 goto out_free_context; 708 } 709 710 priv->ctrl = ioremap(ctrl_lpar, 64 * 1024); 711 if (!priv->ctrl) { 712 dev_err(&dev->core, "ioremap CTRL failed\n"); 713 error = -ENOMEM; 714 goto out_unmap_context; 715 } 716 717 priv->reports = ioremap(reports_lpar, reports_size); 718 if (!priv->reports) { 719 dev_err(&dev->core, "ioremap REPORTS failed\n"); 720 error = -ENOMEM; 721 goto out_unmap_ctrl; 722 } 723 724 mutex_lock(&ps3_gpu_mutex); 725 ps3vram_init_ring(dev); 726 mutex_unlock(&ps3_gpu_mutex); 727 728 priv->size = ddr_size; 729 730 ps3vram_bind(dev); 731 732 mutex_lock(&ps3_gpu_mutex); 733 error = ps3vram_wait_ring(dev, 100); 734 mutex_unlock(&ps3_gpu_mutex); 735 if (error < 0) { 736 dev_err(&dev->core, "Failed to initialize channels\n"); 737 error = -ETIMEDOUT; 738 goto out_unmap_reports; 739 } 740 741 ps3vram_cache_init(dev); 742 ps3vram_proc_init(dev); 743 744 queue = blk_alloc_queue(GFP_KERNEL); 745 if (!queue) { 746 dev_err(&dev->core, "blk_alloc_queue failed\n"); 747 error = -ENOMEM; 748 goto out_cache_cleanup; 749 } 750 751 priv->queue = queue; 752 queue->queuedata = dev; 753 blk_queue_make_request(queue, ps3vram_make_request); 754 blk_queue_max_phys_segments(queue, MAX_PHYS_SEGMENTS); 755 blk_queue_max_hw_segments(queue, MAX_HW_SEGMENTS); 756 blk_queue_max_segment_size(queue, MAX_SEGMENT_SIZE); 757 blk_queue_max_sectors(queue, SAFE_MAX_SECTORS); 758 759 gendisk = alloc_disk(1); 760 if (!gendisk) { 761 dev_err(&dev->core, "alloc_disk failed\n"); 762 error = -ENOMEM; 763 goto fail_cleanup_queue; 764 } 765 766 priv->gendisk = gendisk; 767 gendisk->major = ps3vram_major; 768 gendisk->first_minor = 0; 769 gendisk->fops = &ps3vram_fops; 770 gendisk->queue = queue; 771 gendisk->private_data = dev; 772 gendisk->driverfs_dev = &dev->core; 773 strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name)); 774 set_capacity(gendisk, priv->size >> 9); 775 776 dev_info(&dev->core, "%s: Using %lu MiB of GPU memory\n", 777 gendisk->disk_name, get_capacity(gendisk) >> 11); 778 779 add_disk(gendisk); 780 return 0; 781 782 fail_cleanup_queue: 783 blk_cleanup_queue(queue); 784 out_cache_cleanup: 785 remove_proc_entry(DEVICE_NAME, NULL); 786 ps3vram_cache_cleanup(dev); 787 out_unmap_reports: 788 iounmap(priv->reports); 789 out_unmap_ctrl: 790 iounmap(priv->ctrl); 791 out_unmap_context: 792 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, xdr_lpar, 793 XDR_BUF_SIZE, CBE_IOPTE_M); 794 out_free_context: 795 lv1_gpu_context_free(priv->context_handle); 796 out_free_memory: 797 lv1_gpu_memory_free(priv->memory_handle); 798 out_close_gpu: 799 ps3_close_hv_device(dev); 800 out_free_xdr_buf: 801 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); 802 fail_free_priv: 803 kfree(priv); 804 ps3_system_bus_set_drvdata(dev, NULL); 805 fail: 806 return error; 807 } 808 809 static int ps3vram_remove(struct ps3_system_bus_device *dev) 810 { 811 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 812 813 del_gendisk(priv->gendisk); 814 put_disk(priv->gendisk); 815 blk_cleanup_queue(priv->queue); 816 remove_proc_entry(DEVICE_NAME, NULL); 817 ps3vram_cache_cleanup(dev); 818 iounmap(priv->reports); 819 iounmap(priv->ctrl); 820 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, 821 ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)), 822 XDR_BUF_SIZE, CBE_IOPTE_M); 823 lv1_gpu_context_free(priv->context_handle); 824 lv1_gpu_memory_free(priv->memory_handle); 825 ps3_close_hv_device(dev); 826 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); 827 kfree(priv); 828 ps3_system_bus_set_drvdata(dev, NULL); 829 return 0; 830 } 831 832 static struct ps3_system_bus_driver ps3vram = { 833 .match_id = PS3_MATCH_ID_GPU, 834 .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK, 835 .core.name = DEVICE_NAME, 836 .core.owner = THIS_MODULE, 837 .probe = ps3vram_probe, 838 .remove = ps3vram_remove, 839 .shutdown = ps3vram_remove, 840 }; 841 842 843 static int __init ps3vram_init(void) 844 { 845 int error; 846 847 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 848 return -ENODEV; 849 850 error = register_blkdev(0, DEVICE_NAME); 851 if (error <= 0) { 852 pr_err("%s: register_blkdev failed %d\n", DEVICE_NAME, error); 853 return error; 854 } 855 ps3vram_major = error; 856 857 pr_info("%s: registered block device major %d\n", DEVICE_NAME, 858 ps3vram_major); 859 860 error = ps3_system_bus_driver_register(&ps3vram); 861 if (error) 862 unregister_blkdev(ps3vram_major, DEVICE_NAME); 863 864 return error; 865 } 866 867 static void __exit ps3vram_exit(void) 868 { 869 ps3_system_bus_driver_unregister(&ps3vram); 870 unregister_blkdev(ps3vram_major, DEVICE_NAME); 871 } 872 873 module_init(ps3vram_init); 874 module_exit(ps3vram_exit); 875 876 MODULE_LICENSE("GPL"); 877 MODULE_DESCRIPTION("PS3 Video RAM Storage Driver"); 878 MODULE_AUTHOR("Sony Corporation"); 879 MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK); 880