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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)
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;
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
99#define DMA_NOTIFIER_OFFSET_BASE 0x1000
100#define DMA_NOTIFIER_SIZE 0x40
101#define NOTIFIER 7
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
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
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);
238 ps3vram_out_ring(priv, 0xfeed0000);
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);
245 ps3vram_out_ring(priv, 0xfeed0001);
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
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
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)
413 return -ENOMEM;
414
415 dev_info(&dev->core, "Created ram cache: %d entries, %d KiB each\n",
416 CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024);
417
418 return 0;
419}
420
421static void ps3vram_cache_cleanup(struct ps3_system_bus_device *dev)
422{
423 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
424
425 ps3vram_cache_flush(dev);
426 kfree(priv->cache.tags);
427}
428
429static blk_status_t ps3vram_read(struct ps3_system_bus_device *dev, loff_t from,
430 size_t len, size_t *retlen, u_char *buf)
431{
432 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
433 unsigned int cached, count;
434
435 dev_dbg(&dev->core, "%s: from=0x%08x len=0x%zx\n", __func__,
436 (unsigned int)from, len);
437
438 if (from >= priv->size)
439 return BLK_STS_IOERR;
440
441 if (len > priv->size - from)
442 len = priv->size - from;
443
444
445 count = len;
446 while (count) {
447 unsigned int offset, avail;
448 unsigned int entry;
449
450 offset = (unsigned int) (from & (priv->cache.page_size - 1));
451 avail = priv->cache.page_size - offset;
452
453 entry = ps3vram_cache_match(dev, from);
454 cached = CACHE_OFFSET + entry * priv->cache.page_size + offset;
455
456 dev_dbg(&dev->core, "%s: from=%08x cached=%08x offset=%08x "
457 "avail=%08x count=%08x\n", __func__,
458 (unsigned int)from, cached, offset, avail, count);
459
460 if (avail > count)
461 avail = count;
462 memcpy(buf, priv->xdr_buf + cached, avail);
463
464 buf += avail;
465 count -= avail;
466 from += avail;
467 }
468
469 *retlen = len;
470 return 0;
471}
472
473static blk_status_t ps3vram_write(struct ps3_system_bus_device *dev, loff_t to,
474 size_t len, size_t *retlen, const u_char *buf)
475{
476 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
477 unsigned int cached, count;
478
479 if (to >= priv->size)
480 return BLK_STS_IOERR;
481
482 if (len > priv->size - to)
483 len = priv->size - to;
484
485
486 count = len;
487 while (count) {
488 unsigned int offset, avail;
489 unsigned int entry;
490
491 offset = (unsigned int) (to & (priv->cache.page_size - 1));
492 avail = priv->cache.page_size - offset;
493
494 entry = ps3vram_cache_match(dev, to);
495 cached = CACHE_OFFSET + entry * priv->cache.page_size + offset;
496
497 dev_dbg(&dev->core, "%s: to=%08x cached=%08x offset=%08x "
498 "avail=%08x count=%08x\n", __func__, (unsigned int)to,
499 cached, offset, avail, count);
500
501 if (avail > count)
502 avail = count;
503 memcpy(priv->xdr_buf + cached, buf, avail);
504
505 priv->cache.tags[entry].flags |= CACHE_PAGE_DIRTY;
506
507 buf += avail;
508 count -= avail;
509 to += avail;
510 }
511
512 *retlen = len;
513 return 0;
514}
515
516static int ps3vram_proc_show(struct seq_file *m, void *v)
517{
518 struct ps3vram_priv *priv = m->private;
519
520 seq_printf(m, "hit:%u\nmiss:%u\n", priv->cache.hit, priv->cache.miss);
521 return 0;
522}
523
524static int ps3vram_proc_open(struct inode *inode, struct file *file)
525{
526 return single_open(file, ps3vram_proc_show, PDE_DATA(inode));
527}
528
529static const struct file_operations ps3vram_proc_fops = {
530 .owner = THIS_MODULE,
531 .open = ps3vram_proc_open,
532 .read = seq_read,
533 .llseek = seq_lseek,
534 .release = single_release,
535};
536
537static void ps3vram_proc_init(struct ps3_system_bus_device *dev)
538{
539 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
540 struct proc_dir_entry *pde;
541
542 pde = proc_create_data(DEVICE_NAME, 0444, NULL, &ps3vram_proc_fops,
543 priv);
544 if (!pde)
545 dev_warn(&dev->core, "failed to create /proc entry\n");
546}
547
548static struct bio *ps3vram_do_bio(struct ps3_system_bus_device *dev,
549 struct bio *bio)
550{
551 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
552 int write = bio_data_dir(bio) == WRITE;
553 const char *op = write ? "write" : "read";
554 loff_t offset = bio->bi_iter.bi_sector << 9;
555 blk_status_t error = 0;
556 struct bio_vec bvec;
557 struct bvec_iter iter;
558 struct bio *next;
559
560 bio_for_each_segment(bvec, bio, iter) {
561
562 char *ptr = page_address(bvec.bv_page) + bvec.bv_offset;
563 size_t len = bvec.bv_len, retlen;
564
565 dev_dbg(&dev->core, " %s %zu bytes at offset %llu\n", op,
566 len, offset);
567 if (write)
568 error = ps3vram_write(dev, offset, len, &retlen, ptr);
569 else
570 error = ps3vram_read(dev, offset, len, &retlen, ptr);
571
572 if (error) {
573 dev_err(&dev->core, "%s failed\n", op);
574 goto out;
575 }
576
577 if (retlen != len) {
578 dev_err(&dev->core, "Short %s\n", op);
579 error = BLK_STS_IOERR;
580 goto out;
581 }
582
583 offset += len;
584 }
585
586 dev_dbg(&dev->core, "%s completed\n", op);
587
588out:
589 spin_lock_irq(&priv->lock);
590 bio_list_pop(&priv->list);
591 next = bio_list_peek(&priv->list);
592 spin_unlock_irq(&priv->lock);
593
594 bio->bi_status = error;
595 bio_endio(bio);
596 return next;
597}
598
599static blk_qc_t ps3vram_make_request(struct request_queue *q, struct bio *bio)
600{
601 struct ps3_system_bus_device *dev = q->queuedata;
602 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
603 int busy;
604
605 dev_dbg(&dev->core, "%s\n", __func__);
606
607 blk_queue_split(q, &bio);
608
609 spin_lock_irq(&priv->lock);
610 busy = !bio_list_empty(&priv->list);
611 bio_list_add(&priv->list, bio);
612 spin_unlock_irq(&priv->lock);
613
614 if (busy)
615 return BLK_QC_T_NONE;
616
617 do {
618 bio = ps3vram_do_bio(dev, bio);
619 } while (bio);
620
621 return BLK_QC_T_NONE;
622}
623
624static int ps3vram_probe(struct ps3_system_bus_device *dev)
625{
626 struct ps3vram_priv *priv;
627 int error, status;
628 struct request_queue *queue;
629 struct gendisk *gendisk;
630 u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar,
631 reports_size, xdr_lpar;
632 char *rest;
633
634 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
635 if (!priv) {
636 error = -ENOMEM;
637 goto fail;
638 }
639
640 spin_lock_init(&priv->lock);
641 bio_list_init(&priv->list);
642 ps3_system_bus_set_drvdata(dev, priv);
643
644
645 priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL,
646 get_order(XDR_BUF_SIZE));
647 if (priv->xdr_buf == NULL) {
648 dev_err(&dev->core, "Could not allocate XDR buffer\n");
649 error = -ENOMEM;
650 goto fail_free_priv;
651 }
652
653
654 priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET);
655 priv->fifo_ptr = priv->fifo_base;
656
657
658 if (ps3_open_hv_device(dev)) {
659 dev_err(&dev->core, "ps3_open_hv_device failed\n");
660 error = -EAGAIN;
661 goto out_free_xdr_buf;
662 }
663
664
665 status = -1;
666 ddr_size = ALIGN(memparse(size, &rest), 1024*1024);
667 if (!ddr_size) {
668 dev_err(&dev->core, "Specified size is too small\n");
669 error = -EINVAL;
670 goto out_close_gpu;
671 }
672
673 while (ddr_size > 0) {
674 status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0,
675 &priv->memory_handle,
676 &ddr_lpar);
677 if (!status)
678 break;
679 ddr_size -= 1024*1024;
680 }
681 if (status) {
682 dev_err(&dev->core, "lv1_gpu_memory_allocate failed %d\n",
683 status);
684 error = -ENOMEM;
685 goto out_close_gpu;
686 }
687
688
689 status = lv1_gpu_context_allocate(priv->memory_handle, 0,
690 &priv->context_handle, &ctrl_lpar,
691 &info_lpar, &reports_lpar,
692 &reports_size);
693 if (status) {
694 dev_err(&dev->core, "lv1_gpu_context_allocate failed %d\n",
695 status);
696 error = -ENOMEM;
697 goto out_free_memory;
698 }
699
700
701 xdr_lpar = ps3_mm_phys_to_lpar(__pa(priv->xdr_buf));
702 status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF,
703 xdr_lpar, XDR_BUF_SIZE,
704 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
705 CBE_IOPTE_M);
706 if (status) {
707 dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n",
708 status);
709 error = -ENOMEM;
710 goto out_free_context;
711 }
712
713 priv->ctrl = ioremap(ctrl_lpar, 64 * 1024);
714 if (!priv->ctrl) {
715 dev_err(&dev->core, "ioremap CTRL failed\n");
716 error = -ENOMEM;
717 goto out_unmap_context;
718 }
719
720 priv->reports = ioremap(reports_lpar, reports_size);
721 if (!priv->reports) {
722 dev_err(&dev->core, "ioremap REPORTS failed\n");
723 error = -ENOMEM;
724 goto out_unmap_ctrl;
725 }
726
727 mutex_lock(&ps3_gpu_mutex);
728 ps3vram_init_ring(dev);
729 mutex_unlock(&ps3_gpu_mutex);
730
731 priv->size = ddr_size;
732
733 ps3vram_bind(dev);
734
735 mutex_lock(&ps3_gpu_mutex);
736 error = ps3vram_wait_ring(dev, 100);
737 mutex_unlock(&ps3_gpu_mutex);
738 if (error < 0) {
739 dev_err(&dev->core, "Failed to initialize channels\n");
740 error = -ETIMEDOUT;
741 goto out_unmap_reports;
742 }
743
744 error = ps3vram_cache_init(dev);
745 if (error < 0) {
746 goto out_unmap_reports;
747 }
748
749 ps3vram_proc_init(dev);
750
751 queue = blk_alloc_queue(GFP_KERNEL);
752 if (!queue) {
753 dev_err(&dev->core, "blk_alloc_queue failed\n");
754 error = -ENOMEM;
755 goto out_cache_cleanup;
756 }
757
758 priv->queue = queue;
759 queue->queuedata = dev;
760 blk_queue_make_request(queue, ps3vram_make_request);
761 blk_queue_max_segments(queue, BLK_MAX_SEGMENTS);
762 blk_queue_max_segment_size(queue, BLK_MAX_SEGMENT_SIZE);
763 blk_queue_max_hw_sectors(queue, BLK_SAFE_MAX_SECTORS);
764
765 gendisk = alloc_disk(1);
766 if (!gendisk) {
767 dev_err(&dev->core, "alloc_disk failed\n");
768 error = -ENOMEM;
769 goto fail_cleanup_queue;
770 }
771
772 priv->gendisk = gendisk;
773 gendisk->major = ps3vram_major;
774 gendisk->first_minor = 0;
775 gendisk->fops = &ps3vram_fops;
776 gendisk->queue = queue;
777 gendisk->private_data = dev;
778 strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name));
779 set_capacity(gendisk, priv->size >> 9);
780
781 dev_info(&dev->core, "%s: Using %lu MiB of GPU memory\n",
782 gendisk->disk_name, get_capacity(gendisk) >> 11);
783
784 device_add_disk(&dev->core, gendisk);
785 return 0;
786
787fail_cleanup_queue:
788 blk_cleanup_queue(queue);
789out_cache_cleanup:
790 remove_proc_entry(DEVICE_NAME, NULL);
791 ps3vram_cache_cleanup(dev);
792out_unmap_reports:
793 iounmap(priv->reports);
794out_unmap_ctrl:
795 iounmap(priv->ctrl);
796out_unmap_context:
797 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, xdr_lpar,
798 XDR_BUF_SIZE, CBE_IOPTE_M);
799out_free_context:
800 lv1_gpu_context_free(priv->context_handle);
801out_free_memory:
802 lv1_gpu_memory_free(priv->memory_handle);
803out_close_gpu:
804 ps3_close_hv_device(dev);
805out_free_xdr_buf:
806 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE));
807fail_free_priv:
808 kfree(priv);
809 ps3_system_bus_set_drvdata(dev, NULL);
810fail:
811 return error;
812}
813
814static int ps3vram_remove(struct ps3_system_bus_device *dev)
815{
816 struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);
817
818 del_gendisk(priv->gendisk);
819 put_disk(priv->gendisk);
820 blk_cleanup_queue(priv->queue);
821 remove_proc_entry(DEVICE_NAME, NULL);
822 ps3vram_cache_cleanup(dev);
823 iounmap(priv->reports);
824 iounmap(priv->ctrl);
825 lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF,
826 ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)),
827 XDR_BUF_SIZE, CBE_IOPTE_M);
828 lv1_gpu_context_free(priv->context_handle);
829 lv1_gpu_memory_free(priv->memory_handle);
830 ps3_close_hv_device(dev);
831 free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE));
832 kfree(priv);
833 ps3_system_bus_set_drvdata(dev, NULL);
834 return 0;
835}
836
837static struct ps3_system_bus_driver ps3vram = {
838 .match_id = PS3_MATCH_ID_GPU,
839 .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK,
840 .core.name = DEVICE_NAME,
841 .core.owner = THIS_MODULE,
842 .probe = ps3vram_probe,
843 .remove = ps3vram_remove,
844 .shutdown = ps3vram_remove,
845};
846
847
848static int __init ps3vram_init(void)
849{
850 int error;
851
852 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
853 return -ENODEV;
854
855 error = register_blkdev(0, DEVICE_NAME);
856 if (error <= 0) {
857 pr_err("%s: register_blkdev failed %d\n", DEVICE_NAME, error);
858 return error;
859 }
860 ps3vram_major = error;
861
862 pr_info("%s: registered block device major %d\n", DEVICE_NAME,
863 ps3vram_major);
864
865 error = ps3_system_bus_driver_register(&ps3vram);
866 if (error)
867 unregister_blkdev(ps3vram_major, DEVICE_NAME);
868
869 return error;
870}
871
872static void __exit ps3vram_exit(void)
873{
874 ps3_system_bus_driver_unregister(&ps3vram);
875 unregister_blkdev(ps3vram_major, DEVICE_NAME);
876}
877
878module_init(ps3vram_init);
879module_exit(ps3vram_exit);
880
881MODULE_LICENSE("GPL");
882MODULE_DESCRIPTION("PS3 Video RAM Storage Driver");
883MODULE_AUTHOR("Sony Corporation");
884MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK);
885
