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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 request_queue *queue;
71 struct gendisk *gendisk;
72
73 u64 size;
74
75 u64 memory_handle;
76 u64 context_handle;
77 u32 __iomem *ctrl;
78 void __iomem *reports;
79 u8 *xdr_buf;
80
81 u32 *fifo_base;
82 u32 *fifo_ptr;
83
84 struct ps3vram_cache cache;
85
86 spinlock_t lock;
87 struct bio_list list;
88};
89
90
91static int ps3vram_major;
92
93
94static const struct block_device_operations ps3vram_fops = {
95 .owner = THIS_MODULE,
96};
97
98
99#define DMA_NOTIFIER_HANDLE_BASE 0x66604200
100#define DMA_NOTIFIER_OFFSET_BASE 0x1000
101#define DMA_NOTIFIER_SIZE 0x40
102#define NOTIFIER 7
103
104static char *size = "256M";
105module_param(size, charp, 0);
106MODULE_PARM_DESC(size, "memory size");
107
108static u32 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier)
109{
110 return reports + DMA_NOTIFIER_OFFSET_BASE +
111 DMA_NOTIFIER_SIZE * notifier;
112}
113
114static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev)
115{
116 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
117 u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER);
118 int i;
119
120 for (i = 0; i < 4; i++)
121 iowrite32be(0xffffffff, notify + i);
122}
123
124static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev,
125 unsigned int timeout_ms)
126{
127 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
128 u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER);
129 unsigned long timeout;
130
131 for (timeout = 20; timeout; timeout--) {
132 if (!ioread32be(notify + 3))
133 return 0;
134 udelay(10);
135 }
136
137 timeout = jiffies + msecs_to_jiffies(timeout_ms);
138
139 do {
140 if (!ioread32be(notify + 3))
141 return 0;
142 msleep(1);
143 } while (time_before(jiffies, timeout));
144
145 return -ETIMEDOUT;
146}
147
148static void ps3vram_init_ring(struct ps3_system_bus_device *dev)
149{
150 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
151
152 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT);
153 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_GET);
154}
155
156static int ps3vram_wait_ring(struct ps3_system_bus_device *dev,
157 unsigned int timeout_ms)
158{
159 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
160 unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
161
162 do {
163 if (ioread32be(priv->ctrl + CTRL_PUT) == ioread32be(priv->ctrl + CTRL_GET))
164 return 0;
165 msleep(1);
166 } while (time_before(jiffies, timeout));
167
168 dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n",
169 ioread32be(priv->ctrl + CTRL_PUT), ioread32be(priv->ctrl + CTRL_GET),
170 ioread32be(priv->ctrl + CTRL_TOP));
171
172 return -ETIMEDOUT;
173}
174
175static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data)
176{
177 *(priv->fifo_ptr)++ = data;
178}
179
180static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, u32 tag,
181 u32 size)
182{
183 ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag);
184}
185
186static void ps3vram_rewind_ring(struct ps3_system_bus_device *dev)
187{
188 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
189 int status;
190
191 ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET));
192
193 iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT);
194
195
196 status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0);
197 if (status)
198 dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n",
199 __func__, status);
200
201 priv->fifo_ptr = priv->fifo_base;
202}
203
204static void ps3vram_fire_ring(struct ps3_system_bus_device *dev)
205{
206 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
207 int status;
208
209 mutex_lock(&ps3_gpu_mutex);
210
211 iowrite32be(FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base)
212 * sizeof(u32), priv->ctrl + CTRL_PUT);
213
214
215 status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0);
216 if (status)
217 dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n",
218 __func__, status);
219
220 if ((priv->fifo_ptr - priv->fifo_base) * sizeof(u32) >
221 FIFO_SIZE - 1024) {
222 dev_dbg(&dev->core, "FIFO full, rewinding\n");
223 ps3vram_wait_ring(dev, 200);
224 ps3vram_rewind_ring(dev);
225 }
226
227 mutex_unlock(&ps3_gpu_mutex);
228}
229
230static void ps3vram_bind(struct ps3_system_bus_device *dev)
231{
232 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
233
234 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0, 1);
235 ps3vram_out_ring(priv, 0x31337303);
236 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x180, 3);
237 ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER);
238 ps3vram_out_ring(priv, 0xfeed0001);
239 ps3vram_out_ring(priv, 0xfeed0000);
240
241 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0, 1);
242 ps3vram_out_ring(priv, 0x3137c0de);
243 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x180, 3);
244 ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER);
245 ps3vram_out_ring(priv, 0xfeed0000);
246 ps3vram_out_ring(priv, 0xfeed0001);
247
248 ps3vram_fire_ring(dev);
249}
250
251static int ps3vram_upload(struct ps3_system_bus_device *dev,
252 unsigned int src_offset, unsigned int dst_offset,
253 int len, int count)
254{
255 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
256
257 ps3vram_begin_ring(priv, UPLOAD_SUBCH,
258 NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
259 ps3vram_out_ring(priv, XDR_IOIF + src_offset);
260 ps3vram_out_ring(priv, dst_offset);
261 ps3vram_out_ring(priv, len);
262 ps3vram_out_ring(priv, len);
263 ps3vram_out_ring(priv, len);
264 ps3vram_out_ring(priv, count);
265 ps3vram_out_ring(priv, (1 << 8) | 1);
266 ps3vram_out_ring(priv, 0);
267
268 ps3vram_notifier_reset(dev);
269 ps3vram_begin_ring(priv, UPLOAD_SUBCH,
270 NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1);
271 ps3vram_out_ring(priv, 0);
272 ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x100, 1);
273 ps3vram_out_ring(priv, 0);
274 ps3vram_fire_ring(dev);
275 if (ps3vram_notifier_wait(dev, 200) < 0) {
276 dev_warn(&dev->core, "%s: Notifier timeout\n", __func__);
277 return -1;
278 }
279
280 return 0;
281}
282
283static int ps3vram_download(struct ps3_system_bus_device *dev,
284 unsigned int src_offset, unsigned int dst_offset,
285 int len, int count)
286{
287 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
288
289 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH,
290 NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
291 ps3vram_out_ring(priv, src_offset);
292 ps3vram_out_ring(priv, XDR_IOIF + dst_offset);
293 ps3vram_out_ring(priv, len);
294 ps3vram_out_ring(priv, len);
295 ps3vram_out_ring(priv, len);
296 ps3vram_out_ring(priv, count);
297 ps3vram_out_ring(priv, (1 << 8) | 1);
298 ps3vram_out_ring(priv, 0);
299
300 ps3vram_notifier_reset(dev);
301 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH,
302 NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1);
303 ps3vram_out_ring(priv, 0);
304 ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x100, 1);
305 ps3vram_out_ring(priv, 0);
306 ps3vram_fire_ring(dev);
307 if (ps3vram_notifier_wait(dev, 200) < 0) {
308 dev_warn(&dev->core, "%s: Notifier timeout\n", __func__);
309 return -1;
310 }
311
312 return 0;
313}
314
315static void ps3vram_cache_evict(struct ps3_system_bus_device *dev, int entry)
316{
317 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
318 struct ps3vram_cache *cache = &priv->cache;
319
320 if (!(cache->tags[entry].flags & CACHE_PAGE_DIRTY))
321 return;
322
323 dev_dbg(&dev->core, "Flushing %d: 0x%08x\n", entry,
324 cache->tags[entry].address);
325 if (ps3vram_upload(dev, CACHE_OFFSET + entry * cache->page_size,
326 cache->tags[entry].address, DMA_PAGE_SIZE,
327 cache->page_size / DMA_PAGE_SIZE) < 0) {
328 dev_err(&dev->core,
329 "Failed to upload from 0x%x to " "0x%x size 0x%x\n",
330 entry * cache->page_size, cache->tags[entry].address,
331 cache->page_size);
332 }
333 cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY;
334}
335
336static void ps3vram_cache_load(struct ps3_system_bus_device *dev, int entry,
337 unsigned int address)
338{
339 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
340 struct ps3vram_cache *cache = &priv->cache;
341
342 dev_dbg(&dev->core, "Fetching %d: 0x%08x\n", entry, address);
343 if (ps3vram_download(dev, address,
344 CACHE_OFFSET + entry * cache->page_size,
345 DMA_PAGE_SIZE,
346 cache->page_size / DMA_PAGE_SIZE) < 0) {
347 dev_err(&dev->core,
348 "Failed to download from 0x%x to 0x%x size 0x%x\n",
349 address, entry * cache->page_size, cache->page_size);
350 }
351
352 cache->tags[entry].address = address;
353 cache->tags[entry].flags |= CACHE_PAGE_PRESENT;
354}
355
356
357static void ps3vram_cache_flush(struct ps3_system_bus_device *dev)
358{
359 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
360 struct ps3vram_cache *cache = &priv->cache;
361 int i;
362
363 dev_dbg(&dev->core, "FLUSH\n");
364 for (i = 0; i < cache->page_count; i++) {
365 ps3vram_cache_evict(dev, i);
366 cache->tags[i].flags = 0;
367 }
368}
369
370static unsigned int ps3vram_cache_match(struct ps3_system_bus_device *dev,
371 loff_t address)
372{
373 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
374 struct ps3vram_cache *cache = &priv->cache;
375 unsigned int base;
376 unsigned int offset;
377 int i;
378 static int counter;
379
380 offset = (unsigned int) (address & (cache->page_size - 1));
381 base = (unsigned int) (address - offset);
382
383
384 for (i = 0; i < cache->page_count; i++) {
385 if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) &&
386 cache->tags[i].address == base) {
387 cache->hit++;
388 dev_dbg(&dev->core, "Found entry %d: 0x%08x\n", i,
389 cache->tags[i].address);
390 return i;
391 }
392 }
393
394
395 i = (jiffies + (counter++)) % cache->page_count;
396 dev_dbg(&dev->core, "Using entry %d\n", i);
397
398 ps3vram_cache_evict(dev, i);
399 ps3vram_cache_load(dev, i, base);
400
401 cache->miss++;
402 return i;
403}
404
405static int ps3vram_cache_init(struct ps3_system_bus_device *dev)
406{
407 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
408
409 priv->cache.page_count = CACHE_PAGE_COUNT;
410 priv->cache.page_size = CACHE_PAGE_SIZE;
411 priv->cache.tags = kcalloc(CACHE_PAGE_COUNT,
412 sizeof(struct ps3vram_tag),
413 GFP_KERNEL);
414 if (!priv->cache.tags)
415 return -ENOMEM;
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 blk_status_t 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 BLK_STS_IOERR;
442
443 if (len > priv->size - from)
444 len = priv->size - from;
445
446
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 blk_status_t 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 BLK_STS_IOERR;
483
484 if (len > priv->size - to)
485 len = priv->size - to;
486
487
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 void ps3vram_proc_init(struct ps3_system_bus_device *dev)
527{
528 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
529 struct proc_dir_entry *pde;
530
531 pde = proc_create_single_data(DEVICE_NAME, 0444, NULL,
532 ps3vram_proc_show, priv);
533 if (!pde)
534 dev_warn(&dev->core, "failed to create /proc entry\n");
535}
536
537static struct bio *ps3vram_do_bio(struct ps3_system_bus_device *dev,
538 struct bio *bio)
539{
540 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
541 int write = bio_data_dir(bio) == WRITE;
542 const char *op = write ? "write" : "read";
543 loff_t offset = bio->bi_iter.bi_sector << 9;
544 blk_status_t error = 0;
545 struct bio_vec bvec;
546 struct bvec_iter iter;
547 struct bio *next;
548
549 bio_for_each_segment(bvec, bio, iter) {
550
551 char *ptr = page_address(bvec.bv_page) + bvec.bv_offset;
552 size_t len = bvec.bv_len, retlen;
553
554 dev_dbg(&dev->core, " %s %zu bytes at offset %llu\n", op,
555 len, offset);
556 if (write)
557 error = ps3vram_write(dev, offset, len, &retlen, ptr);
558 else
559 error = ps3vram_read(dev, offset, len, &retlen, ptr);
560
561 if (error) {
562 dev_err(&dev->core, "%s failed\n", op);
563 goto out;
564 }
565
566 if (retlen != len) {
567 dev_err(&dev->core, "Short %s\n", op);
568 error = BLK_STS_IOERR;
569 goto out;
570 }
571
572 offset += len;
573 }
574
575 dev_dbg(&dev->core, "%s completed\n", op);
576
577out:
578 spin_lock_irq(&priv->lock);
579 bio_list_pop(&priv->list);
580 next = bio_list_peek(&priv->list);
581 spin_unlock_irq(&priv->lock);
582
583 bio->bi_status = error;
584 bio_endio(bio);
585 return next;
586}
587
588static blk_qc_t ps3vram_make_request(struct request_queue *q, struct bio *bio)
589{
590 struct ps3_system_bus_device *dev = q->queuedata;
591 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
592 int busy;
593
594 dev_dbg(&dev->core, "%s\n", __func__);
595
596 blk_queue_split(q, &bio);
597
598 spin_lock_irq(&priv->lock);
599 busy = !bio_list_empty(&priv->list);
600 bio_list_add(&priv->list, bio);
601 spin_unlock_irq(&priv->lock);
602
603 if (busy)
604 return BLK_QC_T_NONE;
605
606 do {
607 bio = ps3vram_do_bio(dev, bio);
608 } while (bio);
609
610 return BLK_QC_T_NONE;
611}
612
613static int ps3vram_probe(struct ps3_system_bus_device *dev)
614{
615 struct ps3vram_priv *priv;
616 int error, status;
617 struct request_queue *queue;
618 struct gendisk *gendisk;
619 u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar,
620 reports_size, xdr_lpar;
621 char *rest;
622
623 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
624 if (!priv) {
625 error = -ENOMEM;
626 goto fail;
627 }
628
629 spin_lock_init(&priv->lock);
630 bio_list_init(&priv->list);
631 ps3_system_bus_set_drvdata(dev, priv);
632
633
634 priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL,
635 get_order(XDR_BUF_SIZE));
636 if (priv->xdr_buf == NULL) {
637 dev_err(&dev->core, "Could not allocate XDR buffer\n");
638 error = -ENOMEM;
639 goto fail_free_priv;
640 }
641
642
643 priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET);
644 priv->fifo_ptr = priv->fifo_base;
645
646
647 if (ps3_open_hv_device(dev)) {
648 dev_err(&dev->core, "ps3_open_hv_device failed\n");
649 error = -EAGAIN;
650 goto out_free_xdr_buf;
651 }
652
653
654 status = -1;
655 ddr_size = ALIGN(memparse(size, &rest), 1024*1024);
656 if (!ddr_size) {
657 dev_err(&dev->core, "Specified size is too small\n");
658 error = -EINVAL;
659 goto out_close_gpu;
660 }
661
662 while (ddr_size > 0) {
663 status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0,
664 &priv->memory_handle,
665 &ddr_lpar);
666 if (!status)
667 break;
668 ddr_size -= 1024*1024;
669 }
670 if (status) {
671 dev_err(&dev->core, "lv1_gpu_memory_allocate failed %d\n",
672 status);
673 error = -ENOMEM;
674 goto out_close_gpu;
675 }
676
677
678 status = lv1_gpu_context_allocate(priv->memory_handle, 0,
679 &priv->context_handle, &ctrl_lpar,
680 &info_lpar, &reports_lpar,
681 &reports_size);
682 if (status) {
683 dev_err(&dev->core, "lv1_gpu_context_allocate failed %d\n",
684 status);
685 error = -ENOMEM;
686 goto out_free_memory;
687 }
688
689
690 xdr_lpar = ps3_mm_phys_to_lpar(__pa(priv->xdr_buf));
691 status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF,
692 xdr_lpar, XDR_BUF_SIZE,
693 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
694 CBE_IOPTE_M);
695 if (status) {
696 dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n",
697 status);
698 error = -ENOMEM;
699 goto out_free_context;
700 }
701
702 priv->ctrl = ioremap(ctrl_lpar, 64 * 1024);
703 if (!priv->ctrl) {
704 dev_err(&dev->core, "ioremap CTRL failed\n");
705 error = -ENOMEM;
706 goto out_unmap_context;
707 }
708
709 priv->reports = ioremap(reports_lpar, reports_size);
710 if (!priv->reports) {
711 dev_err(&dev->core, "ioremap REPORTS failed\n");
712 error = -ENOMEM;
713 goto out_unmap_ctrl;
714 }
715
716 mutex_lock(&ps3_gpu_mutex);
717 ps3vram_init_ring(dev);
718 mutex_unlock(&ps3_gpu_mutex);
719
720 priv->size = ddr_size;
721
722 ps3vram_bind(dev);
723
724 mutex_lock(&ps3_gpu_mutex);
725 error = ps3vram_wait_ring(dev, 100);
726 mutex_unlock(&ps3_gpu_mutex);
727 if (error < 0) {
728 dev_err(&dev->core, "Failed to initialize channels\n");
729 error = -ETIMEDOUT;
730 goto out_unmap_reports;
731 }
732
733 error = ps3vram_cache_init(dev);
734 if (error < 0) {
735 goto out_unmap_reports;
736 }
737
738 ps3vram_proc_init(dev);
739
740 queue = blk_alloc_queue(GFP_KERNEL);
741 if (!queue) {
742 dev_err(&dev->core, "blk_alloc_queue failed\n");
743 error = -ENOMEM;
744 goto out_cache_cleanup;
745 }
746
747 priv->queue = queue;
748 queue->queuedata = dev;
749 blk_queue_make_request(queue, ps3vram_make_request);
750 blk_queue_max_segments(queue, BLK_MAX_SEGMENTS);
751 blk_queue_max_segment_size(queue, BLK_MAX_SEGMENT_SIZE);
752 blk_queue_max_hw_sectors(queue, BLK_SAFE_MAX_SECTORS);
753
754 gendisk = alloc_disk(1);
755 if (!gendisk) {
756 dev_err(&dev->core, "alloc_disk failed\n");
757 error = -ENOMEM;
758 goto fail_cleanup_queue;
759 }
760
761 priv->gendisk = gendisk;
762 gendisk->major = ps3vram_major;
763 gendisk->first_minor = 0;
764 gendisk->fops = &ps3vram_fops;
765 gendisk->queue = queue;
766 gendisk->private_data = dev;
767 strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name));
768 set_capacity(gendisk, priv->size >> 9);
769
770 dev_info(&dev->core, "%s: Using %llu MiB of GPU memory\n",
771 gendisk->disk_name, get_capacity(gendisk) >> 11);
772
773 device_add_disk(&dev->core, gendisk, NULL);
774 return 0;
775
776fail_cleanup_queue:
777 blk_cleanup_queue(queue);
778out_cache_cleanup:
779 remove_proc_entry(DEVICE_NAME, NULL);
780 ps3vram_cache_cleanup(dev);
781out_unmap_reports:
782 iounmap(priv->reports);
783out_unmap_ctrl:
784 iounmap(priv->ctrl);
785out_unmap_context:
786 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, xdr_lpar,
787 XDR_BUF_SIZE, CBE_IOPTE_M);
788out_free_context:
789 lv1_gpu_context_free(priv->context_handle);
790out_free_memory:
791 lv1_gpu_memory_free(priv->memory_handle);
792out_close_gpu:
793 ps3_close_hv_device(dev);
794out_free_xdr_buf:
795 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE));
796fail_free_priv:
797 kfree(priv);
798 ps3_system_bus_set_drvdata(dev, NULL);
799fail:
800 return error;
801}
802
803static int ps3vram_remove(struct ps3_system_bus_device *dev)
804{
805 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
806
807 del_gendisk(priv->gendisk);
808 put_disk(priv->gendisk);
809 blk_cleanup_queue(priv->queue);
810 remove_proc_entry(DEVICE_NAME, NULL);
811 ps3vram_cache_cleanup(dev);
812 iounmap(priv->reports);
813 iounmap(priv->ctrl);
814 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF,
815 ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)),
816 XDR_BUF_SIZE, CBE_IOPTE_M);
817 lv1_gpu_context_free(priv->context_handle);
818 lv1_gpu_memory_free(priv->memory_handle);
819 ps3_close_hv_device(dev);
820 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE));
821 kfree(priv);
822 ps3_system_bus_set_drvdata(dev, NULL);
823 return 0;
824}
825
826static struct ps3_system_bus_driver ps3vram = {
827 .match_id = PS3_MATCH_ID_GPU,
828 .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK,
829 .core.name = DEVICE_NAME,
830 .core.owner = THIS_MODULE,
831 .probe = ps3vram_probe,
832 .remove = ps3vram_remove,
833 .shutdown = ps3vram_remove,
834};
835
836
837static int __init ps3vram_init(void)
838{
839 int error;
840
841 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
842 return -ENODEV;
843
844 error = register_blkdev(0, DEVICE_NAME);
845 if (error <= 0) {
846 pr_err("%s: register_blkdev failed %d\n", DEVICE_NAME, error);
847 return error;
848 }
849 ps3vram_major = error;
850
851 pr_info("%s: registered block device major %d\n", DEVICE_NAME,
852 ps3vram_major);
853
854 error = ps3_system_bus_driver_register(&ps3vram);
855 if (error)
856 unregister_blkdev(ps3vram_major, DEVICE_NAME);
857
858 return error;
859}
860
861static void __exit ps3vram_exit(void)
862{
863 ps3_system_bus_driver_unregister(&ps3vram);
864 unregister_blkdev(ps3vram_major, DEVICE_NAME);
865}
866
867module_init(ps3vram_init);
868module_exit(ps3vram_exit);
869
870MODULE_LICENSE("GPL");
871MODULE_DESCRIPTION("PS3 Video RAM Storage Driver");
872MODULE_AUTHOR("Sony Corporation");
873MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK);
874
