1/* 2 * ps3vram - Use extra PS3 video ram as 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 55struct ps3vram_tag { 56 unsigned int address; 57 unsigned int flags; 58}; 59 60struct 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 68struct 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 __iomem *ctrl; 77 void __iomem *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 90static int ps3vram_major; 91 92 93static 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 103static char *size = "256M"; 104module_param(size, charp, 0); 105MODULE_PARM_DESC(size, "memory size"); 106 107static u32 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier) 108{ 109 return reports + DMA_NOTIFIER_OFFSET_BASE + 110 DMA_NOTIFIER_SIZE * notifier; 111} 112 113static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev) 114{ 115 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 116 u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); 117 int i; 118 119 for (i = 0; i < 4; i++) 120 iowrite32be(0xffffffff, notify + i); 121} 122 123static 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 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); 128 unsigned long timeout; 129 130 for (timeout = 20; timeout; timeout--) { 131 if (!ioread32be(notify + 3)) 132 return 0; 133 udelay(10); 134 } 135 136 timeout = jiffies + msecs_to_jiffies(timeout_ms); 137 138 do { 139 if (!ioread32be(notify + 3)) 140 return 0; 141 msleep(1); 142 } while (time_before(jiffies, timeout)); 143 144 return -ETIMEDOUT; 145} 146 147static void ps3vram_init_ring(struct ps3_system_bus_device *dev) 148{ 149 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 150 151 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); 152 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_GET); 153} 154 155static 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 (ioread32be(priv->ctrl + CTRL_PUT) == ioread32be(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 ioread32be(priv->ctrl + CTRL_PUT), ioread32be(priv->ctrl + CTRL_GET), 169 ioread32be(priv->ctrl + CTRL_TOP)); 170 171 return -ETIMEDOUT; 172} 173 174static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data) 175{ 176 *(priv->fifo_ptr)++ = data; 177} 178 179static 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 185static 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 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); 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 203static 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 iowrite32be(FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base) 211 * sizeof(u32), priv->ctrl + CTRL_PUT); 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 229static 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 250static 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 282static 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 314static 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 335static 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 356static 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 369static 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 404static 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 423static 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 431static 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 475static 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 518static 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 526static int ps3vram_proc_open(struct inode *inode, struct file *file) 527{ 528 return single_open(file, ps3vram_proc_show, PDE_DATA(inode)); 529} 530 531static 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 539static 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 550static 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 590out: 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->bi_error = error; 597 bio_endio(bio); 598 return next; 599} 600 601static blk_qc_t ps3vram_make_request(struct request_queue *q, struct bio *bio) 602{ 603 struct ps3_system_bus_device *dev = q->queuedata; 604 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 605 int busy; 606 607 dev_dbg(&dev->core, "%s\n", __func__); 608 609 blk_queue_split(q, &bio, q->bio_split); 610 611 spin_lock_irq(&priv->lock); 612 busy = !bio_list_empty(&priv->list); 613 bio_list_add(&priv->list, bio); 614 spin_unlock_irq(&priv->lock); 615 616 if (busy) 617 return BLK_QC_T_NONE; 618 619 do { 620 bio = ps3vram_do_bio(dev, bio); 621 } while (bio); 622 623 return BLK_QC_T_NONE; 624} 625 626static int ps3vram_probe(struct ps3_system_bus_device *dev) 627{ 628 struct ps3vram_priv *priv; 629 int error, status; 630 struct request_queue *queue; 631 struct gendisk *gendisk; 632 u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar, 633 reports_size, xdr_lpar; 634 char *rest; 635 636 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 637 if (!priv) { 638 error = -ENOMEM; 639 goto fail; 640 } 641 642 spin_lock_init(&priv->lock); 643 bio_list_init(&priv->list); 644 ps3_system_bus_set_drvdata(dev, priv); 645 646 /* Allocate XDR buffer (1MiB aligned) */ 647 priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL, 648 get_order(XDR_BUF_SIZE)); 649 if (priv->xdr_buf == NULL) { 650 dev_err(&dev->core, "Could not allocate XDR buffer\n"); 651 error = -ENOMEM; 652 goto fail_free_priv; 653 } 654 655 /* Put FIFO at begginning of XDR buffer */ 656 priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET); 657 priv->fifo_ptr = priv->fifo_base; 658 659 /* XXX: Need to open GPU, in case ps3fb or snd_ps3 aren't loaded */ 660 if (ps3_open_hv_device(dev)) { 661 dev_err(&dev->core, "ps3_open_hv_device failed\n"); 662 error = -EAGAIN; 663 goto out_free_xdr_buf; 664 } 665 666 /* Request memory */ 667 status = -1; 668 ddr_size = ALIGN(memparse(size, &rest), 1024*1024); 669 if (!ddr_size) { 670 dev_err(&dev->core, "Specified size is too small\n"); 671 error = -EINVAL; 672 goto out_close_gpu; 673 } 674 675 while (ddr_size > 0) { 676 status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0, 677 &priv->memory_handle, 678 &ddr_lpar); 679 if (!status) 680 break; 681 ddr_size -= 1024*1024; 682 } 683 if (status) { 684 dev_err(&dev->core, "lv1_gpu_memory_allocate failed %d\n", 685 status); 686 error = -ENOMEM; 687 goto out_close_gpu; 688 } 689 690 /* Request context */ 691 status = lv1_gpu_context_allocate(priv->memory_handle, 0, 692 &priv->context_handle, &ctrl_lpar, 693 &info_lpar, &reports_lpar, 694 &reports_size); 695 if (status) { 696 dev_err(&dev->core, "lv1_gpu_context_allocate failed %d\n", 697 status); 698 error = -ENOMEM; 699 goto out_free_memory; 700 } 701 702 /* Map XDR buffer to RSX */ 703 xdr_lpar = ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)); 704 status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, 705 xdr_lpar, XDR_BUF_SIZE, 706 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | 707 CBE_IOPTE_M); 708 if (status) { 709 dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n", 710 status); 711 error = -ENOMEM; 712 goto out_free_context; 713 } 714 715 priv->ctrl = ioremap(ctrl_lpar, 64 * 1024); 716 if (!priv->ctrl) { 717 dev_err(&dev->core, "ioremap CTRL failed\n"); 718 error = -ENOMEM; 719 goto out_unmap_context; 720 } 721 722 priv->reports = ioremap(reports_lpar, reports_size); 723 if (!priv->reports) { 724 dev_err(&dev->core, "ioremap REPORTS failed\n"); 725 error = -ENOMEM; 726 goto out_unmap_ctrl; 727 } 728 729 mutex_lock(&ps3_gpu_mutex); 730 ps3vram_init_ring(dev); 731 mutex_unlock(&ps3_gpu_mutex); 732 733 priv->size = ddr_size; 734 735 ps3vram_bind(dev); 736 737 mutex_lock(&ps3_gpu_mutex); 738 error = ps3vram_wait_ring(dev, 100); 739 mutex_unlock(&ps3_gpu_mutex); 740 if (error < 0) { 741 dev_err(&dev->core, "Failed to initialize channels\n"); 742 error = -ETIMEDOUT; 743 goto out_unmap_reports; 744 } 745 746 ps3vram_cache_init(dev); 747 ps3vram_proc_init(dev); 748 749 queue = blk_alloc_queue(GFP_KERNEL); 750 if (!queue) { 751 dev_err(&dev->core, "blk_alloc_queue failed\n"); 752 error = -ENOMEM; 753 goto out_cache_cleanup; 754 } 755 756 priv->queue = queue; 757 queue->queuedata = dev; 758 blk_queue_make_request(queue, ps3vram_make_request); 759 blk_queue_max_segments(queue, BLK_MAX_SEGMENTS); 760 blk_queue_max_segment_size(queue, BLK_MAX_SEGMENT_SIZE); 761 blk_queue_max_hw_sectors(queue, BLK_SAFE_MAX_SECTORS); 762 763 gendisk = alloc_disk(1); 764 if (!gendisk) { 765 dev_err(&dev->core, "alloc_disk failed\n"); 766 error = -ENOMEM; 767 goto fail_cleanup_queue; 768 } 769 770 priv->gendisk = gendisk; 771 gendisk->major = ps3vram_major; 772 gendisk->first_minor = 0; 773 gendisk->fops = &ps3vram_fops; 774 gendisk->queue = queue; 775 gendisk->private_data = dev; 776 gendisk->driverfs_dev = &dev->core; 777 strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name)); 778 set_capacity(gendisk, priv->size >> 9); 779 780 dev_info(&dev->core, "%s: Using %lu MiB of GPU memory\n", 781 gendisk->disk_name, get_capacity(gendisk) >> 11); 782 783 add_disk(gendisk); 784 return 0; 785 786fail_cleanup_queue: 787 blk_cleanup_queue(queue); 788out_cache_cleanup: 789 remove_proc_entry(DEVICE_NAME, NULL); 790 ps3vram_cache_cleanup(dev); 791out_unmap_reports: 792 iounmap(priv->reports); 793out_unmap_ctrl: 794 iounmap(priv->ctrl); 795out_unmap_context: 796 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, xdr_lpar, 797 XDR_BUF_SIZE, CBE_IOPTE_M); 798out_free_context: 799 lv1_gpu_context_free(priv->context_handle); 800out_free_memory: 801 lv1_gpu_memory_free(priv->memory_handle); 802out_close_gpu: 803 ps3_close_hv_device(dev); 804out_free_xdr_buf: 805 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); 806fail_free_priv: 807 kfree(priv); 808 ps3_system_bus_set_drvdata(dev, NULL); 809fail: 810 return error; 811} 812 813static int ps3vram_remove(struct ps3_system_bus_device *dev) 814{ 815 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 816 817 del_gendisk(priv->gendisk); 818 put_disk(priv->gendisk); 819 blk_cleanup_queue(priv->queue); 820 remove_proc_entry(DEVICE_NAME, NULL); 821 ps3vram_cache_cleanup(dev); 822 iounmap(priv->reports); 823 iounmap(priv->ctrl); 824 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, 825 ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)), 826 XDR_BUF_SIZE, CBE_IOPTE_M); 827 lv1_gpu_context_free(priv->context_handle); 828 lv1_gpu_memory_free(priv->memory_handle); 829 ps3_close_hv_device(dev); 830 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); 831 kfree(priv); 832 ps3_system_bus_set_drvdata(dev, NULL); 833 return 0; 834} 835 836static struct ps3_system_bus_driver ps3vram = { 837 .match_id = PS3_MATCH_ID_GPU, 838 .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK, 839 .core.name = DEVICE_NAME, 840 .core.owner = THIS_MODULE, 841 .probe = ps3vram_probe, 842 .remove = ps3vram_remove, 843 .shutdown = ps3vram_remove, 844}; 845 846 847static int __init ps3vram_init(void) 848{ 849 int error; 850 851 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 852 return -ENODEV; 853 854 error = register_blkdev(0, DEVICE_NAME); 855 if (error <= 0) { 856 pr_err("%s: register_blkdev failed %d\n", DEVICE_NAME, error); 857 return error; 858 } 859 ps3vram_major = error; 860 861 pr_info("%s: registered block device major %d\n", DEVICE_NAME, 862 ps3vram_major); 863 864 error = ps3_system_bus_driver_register(&ps3vram); 865 if (error) 866 unregister_blkdev(ps3vram_major, DEVICE_NAME); 867 868 return error; 869} 870 871static void __exit ps3vram_exit(void) 872{ 873 ps3_system_bus_driver_unregister(&ps3vram); 874 unregister_blkdev(ps3vram_major, DEVICE_NAME); 875} 876 877module_init(ps3vram_init); 878module_exit(ps3vram_exit); 879 880MODULE_LICENSE("GPL"); 881MODULE_DESCRIPTION("PS3 Video RAM Storage Driver"); 882MODULE_AUTHOR("Sony Corporation"); 883MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK); 884