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