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