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12#include <linux/blkdev.h>
13#include <linux/delay.h>
14#include <linux/module.h>
15#include <linux/proc_fs.h>
16#include <linux/seq_file.h>
17#include <linux/slab.h>
18
19#include <asm/cell-regs.h>
20#include <asm/firmware.h>
21#include <asm/lv1call.h>
22#include <asm/ps3.h>
23#include <asm/ps3gpu.h>
24
25
26#define DEVICE_NAME "ps3vram"
27
28
29#define XDR_BUF_SIZE (2 * 1024 * 1024)
30#define XDR_IOIF 0x0c000000
31
32#define FIFO_BASE XDR_IOIF
33#define FIFO_SIZE (64 * 1024)
34
35#define DMA_PAGE_SIZE (4 * 1024)
36
37#define CACHE_PAGE_SIZE (256 * 1024)
38#define CACHE_PAGE_COUNT ((XDR_BUF_SIZE - FIFO_SIZE) / CACHE_PAGE_SIZE)
39
40#define CACHE_OFFSET CACHE_PAGE_SIZE
41#define FIFO_OFFSET 0
42
43#define CTRL_PUT 0x10
44#define CTRL_GET 0x11
45#define CTRL_TOP 0x15
46
47#define UPLOAD_SUBCH 1
48#define DOWNLOAD_SUBCH 2
49
50#define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c
51#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104
52
53#define CACHE_PAGE_PRESENT 1
54#define CACHE_PAGE_DIRTY 2
55
56struct ps3vram_tag {
57 unsigned int address;
58 unsigned int flags;
59};
60
61struct ps3vram_cache {
62 unsigned int page_count;
63 unsigned int page_size;
64 struct ps3vram_tag *tags;
65 unsigned int hit;
66 unsigned int miss;
67};
68
69struct ps3vram_priv {
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;
86 struct bio_list list;
87};
88
89
90static int ps3vram_major;
91
92#define DMA_NOTIFIER_HANDLE_BASE 0x66604200
93#define DMA_NOTIFIER_OFFSET_BASE 0x1000
94#define DMA_NOTIFIER_SIZE 0x40
95#define NOTIFIER 7
96
97static char *size = "256M";
98module_param(size, charp, 0);
99MODULE_PARM_DESC(size, "memory size");
100
101static u32 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier)
102{
103 return reports + DMA_NOTIFIER_OFFSET_BASE +
104 DMA_NOTIFIER_SIZE * notifier;
105}
106
107static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev)
108{
109 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
110 u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER);
111 int i;
112
113 for (i = 0; i < 4; i++)
114 iowrite32be(0xffffffff, notify + i);
115}
116
117static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev,
118 unsigned int timeout_ms)
119{
120 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
121 u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER);
122 unsigned long timeout;
123
124 for (timeout = 20; timeout; timeout--) {
125 if (!ioread32be(notify + 3))
126 return 0;
127 udelay(10);
128 }
129
130 timeout = jiffies + msecs_to_jiffies(timeout_ms);
131
132 do {
133 if (!ioread32be(notify + 3))
134 return 0;
135 msleep(1);
136 } while (time_before(jiffies, timeout));
137
138 return -ETIMEDOUT;
139}
140
141static void ps3vram_init_ring(struct ps3_system_bus_device *dev)
142{
143 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
144
145 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT);
146 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_GET);
147}
148
149static int ps3vram_wait_ring(struct ps3_system_bus_device *dev,
150 unsigned int timeout_ms)
151{
152 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
153 unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
154
155 do {
156 if (ioread32be(priv->ctrl + CTRL_PUT) == ioread32be(priv->ctrl + CTRL_GET))
157 return 0;
158 msleep(1);
159 } while (time_before(jiffies, timeout));
160
161 dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n",
162 ioread32be(priv->ctrl + CTRL_PUT), ioread32be(priv->ctrl + CTRL_GET),
163 ioread32be(priv->ctrl + CTRL_TOP));
164
165 return -ETIMEDOUT;
166}
167
168static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data)
169{
170 *(priv->fifo_ptr)++ = data;
171}
172
173static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, u32 tag,
174 u32 size)
175{
176 ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag);
177}
178
179static void ps3vram_rewind_ring(struct ps3_system_bus_device *dev)
180{
181 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
182 int status;
183
184 ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET));
185
186 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT);
187
188
189 status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0);
190 if (status)
191 dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n",
192 __func__, status);
193
194 priv->fifo_ptr = priv->fifo_base;
195}
196
197static void ps3vram_fire_ring(struct ps3_system_bus_device *dev)
198{
199 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
200 int status;
201
202 mutex_lock(&ps3_gpu_mutex);
203
204 iowrite32be(FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base)
205 * sizeof(u32), priv->ctrl + CTRL_PUT);
206
207
208 status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0);
209 if (status)
210 dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n",
211 __func__, status);
212
213 if ((priv->fifo_ptr - priv->fifo_base) * sizeof(u32) >
214 FIFO_SIZE - 1024) {
215 dev_dbg(&dev->core, "FIFO full, rewinding\n");
216 ps3vram_wait_ring(dev, 200);
217 ps3vram_rewind_ring(dev);
218 }
219
220 mutex_unlock(&ps3_gpu_mutex);
221}
222
223static void ps3vram_bind(struct ps3_system_bus_device *dev)
224{
225 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
226
227 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0, 1);
228 ps3vram_out_ring(priv, 0x31337303);
229 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x180, 3);
230 ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER);
231 ps3vram_out_ring(priv, 0xfeed0001);
232 ps3vram_out_ring(priv, 0xfeed0000);
233
234 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0, 1);
235 ps3vram_out_ring(priv, 0x3137c0de);
236 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x180, 3);
237 ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER);
238 ps3vram_out_ring(priv, 0xfeed0000);
239 ps3vram_out_ring(priv, 0xfeed0001);
240
241 ps3vram_fire_ring(dev);
242}
243
244static int ps3vram_upload(struct ps3_system_bus_device *dev,
245 unsigned int src_offset, unsigned int dst_offset,
246 int len, int count)
247{
248 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
249
250 ps3vram_begin_ring(priv, UPLOAD_SUBCH,
251 NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
252 ps3vram_out_ring(priv, XDR_IOIF + src_offset);
253 ps3vram_out_ring(priv, dst_offset);
254 ps3vram_out_ring(priv, len);
255 ps3vram_out_ring(priv, len);
256 ps3vram_out_ring(priv, len);
257 ps3vram_out_ring(priv, count);
258 ps3vram_out_ring(priv, (1 << 8) | 1);
259 ps3vram_out_ring(priv, 0);
260
261 ps3vram_notifier_reset(dev);
262 ps3vram_begin_ring(priv, UPLOAD_SUBCH,
263 NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1);
264 ps3vram_out_ring(priv, 0);
265 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x100, 1);
266 ps3vram_out_ring(priv, 0);
267 ps3vram_fire_ring(dev);
268 if (ps3vram_notifier_wait(dev, 200) < 0) {
269 dev_warn(&dev->core, "%s: Notifier timeout\n", __func__);
270 return -1;
271 }
272
273 return 0;
274}
275
276static int ps3vram_download(struct ps3_system_bus_device *dev,
277 unsigned int src_offset, unsigned int dst_offset,
278 int len, int count)
279{
280 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
281
282 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH,
283 NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
284 ps3vram_out_ring(priv, src_offset);
285 ps3vram_out_ring(priv, XDR_IOIF + dst_offset);
286 ps3vram_out_ring(priv, len);
287 ps3vram_out_ring(priv, len);
288 ps3vram_out_ring(priv, len);
289 ps3vram_out_ring(priv, count);
290 ps3vram_out_ring(priv, (1 << 8) | 1);
291 ps3vram_out_ring(priv, 0);
292
293 ps3vram_notifier_reset(dev);
294 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH,
295 NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1);
296 ps3vram_out_ring(priv, 0);
297 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x100, 1);
298 ps3vram_out_ring(priv, 0);
299 ps3vram_fire_ring(dev);
300 if (ps3vram_notifier_wait(dev, 200) < 0) {
301 dev_warn(&dev->core, "%s: Notifier timeout\n", __func__);
302 return -1;
303 }
304
305 return 0;
306}
307
308static void ps3vram_cache_evict(struct ps3_system_bus_device *dev, int entry)
309{
310 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
311 struct ps3vram_cache *cache = &priv->cache;
312
313 if (!(cache->tags[entry].flags & CACHE_PAGE_DIRTY))
314 return;
315
316 dev_dbg(&dev->core, "Flushing %d: 0x%08x\n", entry,
317 cache->tags[entry].address);
318 if (ps3vram_upload(dev, CACHE_OFFSET + entry * cache->page_size,
319 cache->tags[entry].address, DMA_PAGE_SIZE,
320 cache->page_size / DMA_PAGE_SIZE) < 0) {
321 dev_err(&dev->core,
322 "Failed to upload from 0x%x to " "0x%x size 0x%x\n",
323 entry * cache->page_size, cache->tags[entry].address,
324 cache->page_size);
325 }
326 cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY;
327}
328
329static void ps3vram_cache_load(struct ps3_system_bus_device *dev, int entry,
330 unsigned int address)
331{
332 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
333 struct ps3vram_cache *cache = &priv->cache;
334
335 dev_dbg(&dev->core, "Fetching %d: 0x%08x\n", entry, address);
336 if (ps3vram_download(dev, address,
337 CACHE_OFFSET + entry * cache->page_size,
338 DMA_PAGE_SIZE,
339 cache->page_size / DMA_PAGE_SIZE) < 0) {
340 dev_err(&dev->core,
341 "Failed to download from 0x%x to 0x%x size 0x%x\n",
342 address, entry * cache->page_size, cache->page_size);
343 }
344
345 cache->tags[entry].address = address;
346 cache->tags[entry].flags |= CACHE_PAGE_PRESENT;
347}
348
349
350static void ps3vram_cache_flush(struct ps3_system_bus_device *dev)
351{
352 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
353 struct ps3vram_cache *cache = &priv->cache;
354 int i;
355
356 dev_dbg(&dev->core, "FLUSH\n");
357 for (i = 0; i < cache->page_count; i++) {
358 ps3vram_cache_evict(dev, i);
359 cache->tags[i].flags = 0;
360 }
361}
362
363static unsigned int ps3vram_cache_match(struct ps3_system_bus_device *dev,
364 loff_t address)
365{
366 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
367 struct ps3vram_cache *cache = &priv->cache;
368 unsigned int base;
369 unsigned int offset;
370 int i;
371 static int counter;
372
373 offset = (unsigned int) (address & (cache->page_size - 1));
374 base = (unsigned int) (address - offset);
375
376
377 for (i = 0; i < cache->page_count; i++) {
378 if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) &&
379 cache->tags[i].address == base) {
380 cache->hit++;
381 dev_dbg(&dev->core, "Found entry %d: 0x%08x\n", i,
382 cache->tags[i].address);
383 return i;
384 }
385 }
386
387
388 i = (jiffies + (counter++)) % cache->page_count;
389 dev_dbg(&dev->core, "Using entry %d\n", i);
390
391 ps3vram_cache_evict(dev, i);
392 ps3vram_cache_load(dev, i, base);
393
394 cache->miss++;
395 return i;
396}
397
398static int ps3vram_cache_init(struct ps3_system_bus_device *dev)
399{
400 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
401
402 priv->cache.page_count = CACHE_PAGE_COUNT;
403 priv->cache.page_size = CACHE_PAGE_SIZE;
404 priv->cache.tags = kcalloc(CACHE_PAGE_COUNT,
405 sizeof(struct ps3vram_tag),
406 GFP_KERNEL);
407 if (!priv->cache.tags)
408 return -ENOMEM;
409
410 dev_info(&dev->core, "Created ram cache: %d entries, %d KiB each\n",
411 CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024);
412
413 return 0;
414}
415
416static void ps3vram_cache_cleanup(struct ps3_system_bus_device *dev)
417{
418 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
419
420 ps3vram_cache_flush(dev);
421 kfree(priv->cache.tags);
422}
423
424static blk_status_t ps3vram_read(struct ps3_system_bus_device *dev, loff_t from,
425 size_t len, size_t *retlen, u_char *buf)
426{
427 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
428 unsigned int cached, count;
429
430 dev_dbg(&dev->core, "%s: from=0x%08x len=0x%zx\n", __func__,
431 (unsigned int)from, len);
432
433 if (from >= priv->size)
434 return BLK_STS_IOERR;
435
436 if (len > priv->size - from)
437 len = priv->size - from;
438
439
440 count = len;
441 while (count) {
442 unsigned int offset, avail;
443 unsigned int entry;
444
445 offset = (unsigned int) (from & (priv->cache.page_size - 1));
446 avail = priv->cache.page_size - offset;
447
448 entry = ps3vram_cache_match(dev, from);
449 cached = CACHE_OFFSET + entry * priv->cache.page_size + offset;
450
451 dev_dbg(&dev->core, "%s: from=%08x cached=%08x offset=%08x "
452 "avail=%08x count=%08x\n", __func__,
453 (unsigned int)from, cached, offset, avail, count);
454
455 if (avail > count)
456 avail = count;
457 memcpy(buf, priv->xdr_buf + cached, avail);
458
459 buf += avail;
460 count -= avail;
461 from += avail;
462 }
463
464 *retlen = len;
465 return 0;
466}
467
468static blk_status_t ps3vram_write(struct ps3_system_bus_device *dev, loff_t to,
469 size_t len, size_t *retlen, const u_char *buf)
470{
471 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
472 unsigned int cached, count;
473
474 if (to >= priv->size)
475 return BLK_STS_IOERR;
476
477 if (len > priv->size - to)
478 len = priv->size - to;
479
480
481 count = len;
482 while (count) {
483 unsigned int offset, avail;
484 unsigned int entry;
485
486 offset = (unsigned int) (to & (priv->cache.page_size - 1));
487 avail = priv->cache.page_size - offset;
488
489 entry = ps3vram_cache_match(dev, to);
490 cached = CACHE_OFFSET + entry * priv->cache.page_size + offset;
491
492 dev_dbg(&dev->core, "%s: to=%08x cached=%08x offset=%08x "
493 "avail=%08x count=%08x\n", __func__, (unsigned int)to,
494 cached, offset, avail, count);
495
496 if (avail > count)
497 avail = count;
498 memcpy(priv->xdr_buf + cached, buf, avail);
499
500 priv->cache.tags[entry].flags |= CACHE_PAGE_DIRTY;
501
502 buf += avail;
503 count -= avail;
504 to += avail;
505 }
506
507 *retlen = len;
508 return 0;
509}
510
511static int ps3vram_proc_show(struct seq_file *m, void *v)
512{
513 struct ps3vram_priv *priv = m->private;
514
515 seq_printf(m, "hit:%u\nmiss:%u\n", priv->cache.hit, priv->cache.miss);
516 return 0;
517}
518
519static void ps3vram_proc_init(struct ps3_system_bus_device *dev)
520{
521 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
522 struct proc_dir_entry *pde;
523
524 pde = proc_create_single_data(DEVICE_NAME, 0444, NULL,
525 ps3vram_proc_show, priv);
526 if (!pde)
527 dev_warn(&dev->core, "failed to create /proc entry\n");
528}
529
530static struct bio *ps3vram_do_bio(struct ps3_system_bus_device *dev,
531 struct bio *bio)
532{
533 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
534 int write = bio_data_dir(bio) == WRITE;
535 const char *op = write ? "write" : "read";
536 loff_t offset = bio->bi_iter.bi_sector << 9;
537 blk_status_t error = 0;
538 struct bio_vec bvec;
539 struct bvec_iter iter;
540 struct bio *next;
541
542 bio_for_each_segment(bvec, bio, iter) {
543
544 char *ptr = bvec_virt(&bvec);
545 size_t len = bvec.bv_len, retlen;
546
547 dev_dbg(&dev->core, " %s %zu bytes at offset %llu\n", op,
548 len, offset);
549 if (write)
550 error = ps3vram_write(dev, offset, len, &retlen, ptr);
551 else
552 error = ps3vram_read(dev, offset, len, &retlen, ptr);
553
554 if (error) {
555 dev_err(&dev->core, "%s failed\n", op);
556 goto out;
557 }
558
559 if (retlen != len) {
560 dev_err(&dev->core, "Short %s\n", op);
561 error = BLK_STS_IOERR;
562 goto out;
563 }
564
565 offset += len;
566 }
567
568 dev_dbg(&dev->core, "%s completed\n", op);
569
570out:
571 spin_lock_irq(&priv->lock);
572 bio_list_pop(&priv->list);
573 next = bio_list_peek(&priv->list);
574 spin_unlock_irq(&priv->lock);
575
576 bio->bi_status = error;
577 bio_endio(bio);
578 return next;
579}
580
581static void ps3vram_submit_bio(struct bio *bio)
582{
583 struct ps3_system_bus_device *dev = bio->bi_bdev->bd_disk->private_data;
584 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
585 int busy;
586
587 dev_dbg(&dev->core, "%s\n", __func__);
588
589 blk_queue_split(&bio);
590
591 spin_lock_irq(&priv->lock);
592 busy = !bio_list_empty(&priv->list);
593 bio_list_add(&priv->list, bio);
594 spin_unlock_irq(&priv->lock);
595
596 if (busy)
597 return;
598
599 do {
600 bio = ps3vram_do_bio(dev, bio);
601 } while (bio);
602}
603
604static const struct block_device_operations ps3vram_fops = {
605 .owner = THIS_MODULE,
606 .submit_bio = ps3vram_submit_bio,
607};
608
609static int ps3vram_probe(struct ps3_system_bus_device *dev)
610{
611 struct ps3vram_priv *priv;
612 int error, status;
613 struct gendisk *gendisk;
614 u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar,
615 reports_size, xdr_lpar;
616 char *rest;
617
618 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
619 if (!priv) {
620 error = -ENOMEM;
621 goto fail;
622 }
623
624 spin_lock_init(&priv->lock);
625 bio_list_init(&priv->list);
626 ps3_system_bus_set_drvdata(dev, priv);
627
628
629 priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL,
630 get_order(XDR_BUF_SIZE));
631 if (priv->xdr_buf == NULL) {
632 dev_err(&dev->core, "Could not allocate XDR buffer\n");
633 error = -ENOMEM;
634 goto fail_free_priv;
635 }
636
637
638 priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET);
639 priv->fifo_ptr = priv->fifo_base;
640
641
642 if (ps3_open_hv_device(dev)) {
643 dev_err(&dev->core, "ps3_open_hv_device failed\n");
644 error = -EAGAIN;
645 goto out_free_xdr_buf;
646 }
647
648
649 status = -1;
650 ddr_size = ALIGN(memparse(size, &rest), 1024*1024);
651 if (!ddr_size) {
652 dev_err(&dev->core, "Specified size is too small\n");
653 error = -EINVAL;
654 goto out_close_gpu;
655 }
656
657 while (ddr_size > 0) {
658 status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0,
659 &priv->memory_handle,
660 &ddr_lpar);
661 if (!status)
662 break;
663 ddr_size -= 1024*1024;
664 }
665 if (status) {
666 dev_err(&dev->core, "lv1_gpu_memory_allocate failed %d\n",
667 status);
668 error = -ENOMEM;
669 goto out_close_gpu;
670 }
671
672
673 status = lv1_gpu_context_allocate(priv->memory_handle, 0,
674 &priv->context_handle, &ctrl_lpar,
675 &info_lpar, &reports_lpar,
676 &reports_size);
677 if (status) {
678 dev_err(&dev->core, "lv1_gpu_context_allocate failed %d\n",
679 status);
680 error = -ENOMEM;
681 goto out_free_memory;
682 }
683
684
685 xdr_lpar = ps3_mm_phys_to_lpar(__pa(priv->xdr_buf));
686 status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF,
687 xdr_lpar, XDR_BUF_SIZE,
688 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
689 CBE_IOPTE_M);
690 if (status) {
691 dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n",
692 status);
693 error = -ENOMEM;
694 goto out_free_context;
695 }
696
697 priv->ctrl = ioremap(ctrl_lpar, 64 * 1024);
698 if (!priv->ctrl) {
699 dev_err(&dev->core, "ioremap CTRL failed\n");
700 error = -ENOMEM;
701 goto out_unmap_context;
702 }
703
704 priv->reports = ioremap(reports_lpar, reports_size);
705 if (!priv->reports) {
706 dev_err(&dev->core, "ioremap REPORTS failed\n");
707 error = -ENOMEM;
708 goto out_unmap_ctrl;
709 }
710
711 mutex_lock(&ps3_gpu_mutex);
712 ps3vram_init_ring(dev);
713 mutex_unlock(&ps3_gpu_mutex);
714
715 priv->size = ddr_size;
716
717 ps3vram_bind(dev);
718
719 mutex_lock(&ps3_gpu_mutex);
720 error = ps3vram_wait_ring(dev, 100);
721 mutex_unlock(&ps3_gpu_mutex);
722 if (error < 0) {
723 dev_err(&dev->core, "Failed to initialize channels\n");
724 error = -ETIMEDOUT;
725 goto out_unmap_reports;
726 }
727
728 error = ps3vram_cache_init(dev);
729 if (error < 0) {
730 goto out_unmap_reports;
731 }
732
733 ps3vram_proc_init(dev);
734
735 gendisk = blk_alloc_disk(NUMA_NO_NODE);
736 if (!gendisk) {
737 dev_err(&dev->core, "blk_alloc_disk failed\n");
738 error = -ENOMEM;
739 goto out_cache_cleanup;
740 }
741
742 priv->gendisk = gendisk;
743 gendisk->major = ps3vram_major;
744 gendisk->minors = 1;
745 gendisk->fops = &ps3vram_fops;
746 gendisk->private_data = dev;
747 strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name));
748 set_capacity(gendisk, priv->size >> 9);
749 blk_queue_max_segments(gendisk->queue, BLK_MAX_SEGMENTS);
750 blk_queue_max_segment_size(gendisk->queue, BLK_MAX_SEGMENT_SIZE);
751 blk_queue_max_hw_sectors(gendisk->queue, BLK_SAFE_MAX_SECTORS);
752
753 dev_info(&dev->core, "%s: Using %llu MiB of GPU memory\n",
754 gendisk->disk_name, get_capacity(gendisk) >> 11);
755
756 error = device_add_disk(&dev->core, gendisk, NULL);
757 if (error)
758 goto out_cleanup_disk;
759
760 return 0;
761
762out_cleanup_disk:
763 blk_cleanup_disk(gendisk);
764out_cache_cleanup:
765 remove_proc_entry(DEVICE_NAME, NULL);
766 ps3vram_cache_cleanup(dev);
767out_unmap_reports:
768 iounmap(priv->reports);
769out_unmap_ctrl:
770 iounmap(priv->ctrl);
771out_unmap_context:
772 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, xdr_lpar,
773 XDR_BUF_SIZE, CBE_IOPTE_M);
774out_free_context:
775 lv1_gpu_context_free(priv->context_handle);
776out_free_memory:
777 lv1_gpu_memory_free(priv->memory_handle);
778out_close_gpu:
779 ps3_close_hv_device(dev);
780out_free_xdr_buf:
781 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE));
782fail_free_priv:
783 kfree(priv);
784 ps3_system_bus_set_drvdata(dev, NULL);
785fail:
786 return error;
787}
788
789static void ps3vram_remove(struct ps3_system_bus_device *dev)
790{
791 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
792
793 del_gendisk(priv->gendisk);
794 blk_cleanup_disk(priv->gendisk);
795 remove_proc_entry(DEVICE_NAME, NULL);
796 ps3vram_cache_cleanup(dev);
797 iounmap(priv->reports);
798 iounmap(priv->ctrl);
799 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF,
800 ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)),
801 XDR_BUF_SIZE, CBE_IOPTE_M);
802 lv1_gpu_context_free(priv->context_handle);
803 lv1_gpu_memory_free(priv->memory_handle);
804 ps3_close_hv_device(dev);
805 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE));
806 kfree(priv);
807 ps3_system_bus_set_drvdata(dev, NULL);
808}
809
810static struct ps3_system_bus_driver ps3vram = {
811 .match_id = PS3_MATCH_ID_GPU,
812 .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK,
813 .core.name = DEVICE_NAME,
814 .core.owner = THIS_MODULE,
815 .probe = ps3vram_probe,
816 .remove = ps3vram_remove,
817 .shutdown = ps3vram_remove,
818};
819
820
821static int __init ps3vram_init(void)
822{
823 int error;
824
825 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
826 return -ENODEV;
827
828 error = register_blkdev(0, DEVICE_NAME);
829 if (error <= 0) {
830 pr_err("%s: register_blkdev failed %d\n", DEVICE_NAME, error);
831 return error;
832 }
833 ps3vram_major = error;
834
835 pr_info("%s: registered block device major %d\n", DEVICE_NAME,
836 ps3vram_major);
837
838 error = ps3_system_bus_driver_register(&ps3vram);
839 if (error)
840 unregister_blkdev(ps3vram_major, DEVICE_NAME);
841
842 return error;
843}
844
845static void __exit ps3vram_exit(void)
846{
847 ps3_system_bus_driver_unregister(&ps3vram);
848 unregister_blkdev(ps3vram_major, DEVICE_NAME);
849}
850
851module_init(ps3vram_init);
852module_exit(ps3vram_exit);
853
854MODULE_LICENSE("GPL");
855MODULE_DESCRIPTION("PS3 Video RAM Storage Driver");
856MODULE_AUTHOR("Sony Corporation");
857MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK);
858
