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yaml
---
r: 127684
b: refs/heads/master
c: f259d74
h: refs/heads/master
v: v3
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Geoff Levand authored and Benjamin Herrenschmidt committed Jan 8, 2009
1 parent 388ab51 commit 1e50350
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Showing 2 changed files with 69 additions and 49 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: e7dd54cf17714c22665ad74b720f40fb64b3c565
refs/heads/master: f259d74e030faab15b95fb4bb56d7f424773c278
116 changes: 68 additions & 48 deletions trunk/drivers/mtd/devices/ps3vram.c
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Original file line number Diff line number Diff line change
Expand Up @@ -53,9 +53,6 @@ struct mtd_info ps3vram_mtd;
#define CACHE_PAGE_PRESENT 1
#define CACHE_PAGE_DIRTY 2

#define dbg(fmt, args...) \
pr_debug("%s:%d " fmt "\n", __func__, __LINE__, ## args)

struct ps3vram_tag {
unsigned int address;
unsigned int flags;
Expand All @@ -78,6 +75,7 @@ struct ps3vram_priv {
uint32_t *fifo_base;
uint32_t *fifo_ptr;

struct device *dev;
struct ps3vram_cache cache;

/* Used to serialize cache/DMA operations */
Expand Down Expand Up @@ -148,8 +146,9 @@ static int ps3vram_wait_ring(struct mtd_info *mtd, int timeout)
udelay(1);
}
if (timeout == 0) {
pr_err("FIFO timeout (%08x/%08x/%08x)\n", priv->ctrl[CTRL_PUT],
priv->ctrl[CTRL_GET], priv->ctrl[CTRL_TOP]);
dev_dbg(priv->dev, "%s:%d: FIFO timeout (%08x/%08x/%08x)\n",
__func__, __LINE__, priv->ctrl[CTRL_PUT],
priv->ctrl[CTRL_GET], priv->ctrl[CTRL_TOP]);
return -ETIMEDOUT;
}

Expand Down Expand Up @@ -181,7 +180,8 @@ static void ps3vram_rewind_ring(struct mtd_info *mtd)
L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT,
0, 0, 0, 0);
if (status)
pr_err("ps3vram: lv1_gpu_context_attribute FB_BLIT failed\n");
dev_err(priv->dev, "%s:%d: lv1_gpu_context_attribute failed\n",
__func__, __LINE__);

priv->fifo_ptr = priv->fifo_base;
}
Expand All @@ -201,11 +201,13 @@ static void ps3vram_fire_ring(struct mtd_info *mtd)
L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT,
0, 0, 0, 0);
if (status)
pr_err("ps3vram: lv1_gpu_context_attribute FB_BLIT failed\n");
dev_err(priv->dev, "%s:%d: lv1_gpu_context_attribute failed\n",
__func__, __LINE__);

if ((priv->fifo_ptr - priv->fifo_base) * sizeof(uint32_t) >
FIFO_SIZE - 1024) {
dbg("fifo full, rewinding");
dev_dbg(priv->dev, "%s:%d: fifo full, rewinding\n", __func__,
__LINE__);
ps3vram_wait_ring(mtd, 200);
ps3vram_rewind_ring(mtd);
}
Expand Down Expand Up @@ -258,7 +260,8 @@ static int ps3vram_upload(struct mtd_info *mtd, unsigned int src_offset,
ps3vram_out_ring(priv, 0);
ps3vram_fire_ring(mtd);
if (ps3vram_notifier_wait(mtd, 200) < 0) {
pr_err("notifier timeout\n");
dev_dbg(priv->dev, "%s:%d: notifier timeout\n", __func__,
__LINE__);
return -1;
}

Expand Down Expand Up @@ -289,7 +292,8 @@ static int ps3vram_download(struct mtd_info *mtd, unsigned int src_offset,
ps3vram_out_ring(priv, 0);
ps3vram_fire_ring(mtd);
if (ps3vram_notifier_wait(mtd, 200) < 0) {
pr_err("notifier timeout\n");
dev_dbg(priv->dev, "%s:%d: notifier timeout\n", __func__,
__LINE__);
return -1;
}

Expand All @@ -302,16 +306,17 @@ static void ps3vram_cache_evict(struct mtd_info *mtd, int entry)
struct ps3vram_cache *cache = &priv->cache;

if (cache->tags[entry].flags & CACHE_PAGE_DIRTY) {
dbg("flushing %d : 0x%08x", entry, cache->tags[entry].address);
dev_dbg(priv->dev, "%s:%d: flushing %d : 0x%08x\n", __func__,
__LINE__, entry, cache->tags[entry].address);
if (ps3vram_upload(mtd,
CACHE_OFFSET + entry * cache->page_size,
cache->tags[entry].address,
DMA_PAGE_SIZE,
cache->page_size / DMA_PAGE_SIZE) < 0) {
pr_err("failed to upload from 0x%x to 0x%x size 0x%x\n",
entry * cache->page_size,
cache->tags[entry].address,
cache->page_size);
dev_dbg(priv->dev, "%s:%d: failed to upload from "
"0x%x to 0x%x size 0x%x\n", __func__, __LINE__,
entry * cache->page_size,
cache->tags[entry].address, cache->page_size);
}
cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY;
}
Expand All @@ -323,16 +328,16 @@ static void ps3vram_cache_load(struct mtd_info *mtd, int entry,
struct ps3vram_priv *priv = mtd->priv;
struct ps3vram_cache *cache = &priv->cache;

dbg("fetching %d : 0x%08x", entry, address);
dev_dbg(priv->dev, "%s:%d: fetching %d : 0x%08x\n", __func__, __LINE__,
entry, address);
if (ps3vram_download(mtd,
address,
CACHE_OFFSET + entry * cache->page_size,
DMA_PAGE_SIZE,
cache->page_size / DMA_PAGE_SIZE) < 0) {
pr_err("failed to download from 0x%x to 0x%x size 0x%x\n",
address,
entry * cache->page_size,
cache->page_size);
dev_err(priv->dev, "%s:%d: failed to download from "
"0x%x to 0x%x size 0x%x\n", __func__, __LINE__, address,
entry * cache->page_size, cache->page_size);
}

cache->tags[entry].address = address;
Expand All @@ -346,7 +351,7 @@ static void ps3vram_cache_flush(struct mtd_info *mtd)
struct ps3vram_cache *cache = &priv->cache;
int i;

dbg("FLUSH");
dev_dbg(priv->dev, "%s:%d: FLUSH\n", __func__, __LINE__);
for (i = 0; i < cache->page_count; i++) {
ps3vram_cache_evict(mtd, i);
cache->tags[i].flags = 0;
Expand All @@ -369,15 +374,15 @@ static unsigned int ps3vram_cache_match(struct mtd_info *mtd, loff_t address)
for (i = 0; i < cache->page_count; i++) {
if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) &&
cache->tags[i].address == base) {
dbg("found entry %d : 0x%08x",
i, cache->tags[i].address);
dev_dbg(priv->dev, "%s:%d: found entry %d : 0x%08x\n",
__func__, __LINE__, i, cache->tags[i].address);
return i;
}
}

/* choose a random entry */
i = (jiffies + (counter++)) % cache->page_count;
dbg("using cache entry %d", i);
dev_dbg(priv->dev, "%s:%d: using entry %d\n", __func__, __LINE__, i);

ps3vram_cache_evict(mtd, i);
ps3vram_cache_load(mtd, i, base);
Expand All @@ -389,18 +394,19 @@ static int ps3vram_cache_init(struct mtd_info *mtd)
{
struct ps3vram_priv *priv = mtd->priv;

pr_info("creating cache: %d entries, %d bytes pages\n",
CACHE_PAGE_COUNT, CACHE_PAGE_SIZE);

priv->cache.page_count = CACHE_PAGE_COUNT;
priv->cache.page_size = CACHE_PAGE_SIZE;
priv->cache.tags = kzalloc(sizeof(struct ps3vram_tag) *
CACHE_PAGE_COUNT, GFP_KERNEL);
if (priv->cache.tags == NULL) {
pr_err("could not allocate cache tags\n");
dev_err(priv->dev, "%s:%d: could not allocate cache tags\n",
__func__, __LINE__);
return -ENOMEM;
}

dev_info(priv->dev, "created ram cache: %d entries, %d KiB each\n",
CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024);

return 0;
}

Expand Down Expand Up @@ -434,14 +440,14 @@ static int ps3vram_erase(struct mtd_info *mtd, struct erase_info *instr)
return 0;
}


static int ps3vram_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct ps3vram_priv *priv = mtd->priv;
unsigned int cached, count;

dbg("from = 0x%08x len = 0x%zx", (unsigned int) from, len);
dev_dbg(priv->dev, "%s:%d: from=0x%08x len=0x%zx\n", __func__, __LINE__,
(unsigned int)from, len);

if (from >= mtd->size)
return -EINVAL;
Expand All @@ -463,8 +469,9 @@ static int ps3vram_read(struct mtd_info *mtd, loff_t from, size_t len,
entry = ps3vram_cache_match(mtd, from);
cached = CACHE_OFFSET + entry * priv->cache.page_size + offset;

dbg("from=%08x cached=%08x offset=%08x avail=%08x count=%08x",
(unsigned)from, cached, offset, avail, count);
dev_dbg(priv->dev, "%s:%d: from=%08x cached=%08x offset=%08x "
"avail=%08x count=%08x\n", __func__, __LINE__,
(unsigned int)from, cached, offset, avail, count);

if (avail > count)
avail = count;
Expand Down Expand Up @@ -507,8 +514,9 @@ static int ps3vram_write(struct mtd_info *mtd, loff_t to, size_t len,
entry = ps3vram_cache_match(mtd, to);
cached = CACHE_OFFSET + entry * priv->cache.page_size + offset;

dbg("to=%08x cached=%08x offset=%08x avail=%08x count=%08x",
(unsigned) to, cached, offset, avail, count);
dev_dbg(priv->dev, "%s:%d: to=%08x cached=%08x offset=%08x "
"avail=%08x count=%08x\n", __func__, __LINE__,
(unsigned int)to, cached, offset, avail, count);

if (avail > count)
avail = count;
Expand Down Expand Up @@ -544,12 +552,14 @@ static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev)
priv = ps3vram_mtd.priv;

mutex_init(&priv->lock);
priv->dev = &dev->core;

/* Allocate XDR buffer (1MiB aligned) */
priv->xdr_buf = (uint8_t *) __get_free_pages(GFP_KERNEL,
get_order(XDR_BUF_SIZE));
if (priv->xdr_buf == NULL) {
pr_err("ps3vram: could not allocate XDR buffer\n");
dev_dbg(&dev->core, "%s:%d: could not allocate XDR buffer\n",
__func__, __LINE__);
ret = -ENOMEM;
goto out_free_priv;
}
Expand All @@ -560,7 +570,8 @@ static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev)

/* XXX: Need to open GPU, in case ps3fb or snd_ps3 aren't loaded */
if (ps3_open_hv_device(dev)) {
pr_err("ps3vram: ps3_open_hv_device failed\n");
dev_err(&dev->core, "%s:%d: ps3_open_hv_device failed\n",
__func__, __LINE__);
ret = -EAGAIN;
goto out_close_gpu;
}
Expand All @@ -572,7 +583,8 @@ static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev)
ddr_size -= ps3fb_videomemory.size;
ddr_size = ALIGN(ddr_size, 1024*1024);
if (ddr_size <= 0) {
printk(KERN_ERR "ps3vram: specified size is too small\n");
dev_err(&dev->core, "%s:%d: specified size is too small\n",
__func__, __LINE__);
ret = -EINVAL;
goto out_close_gpu;
}
Expand All @@ -586,12 +598,11 @@ static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev)
ddr_size -= 1024*1024;
}
if (status != 0 || ddr_size <= 0) {
pr_err("ps3vram: lv1_gpu_memory_allocate failed\n");
dev_err(&dev->core, "%s:%d: lv1_gpu_memory_allocate failed\n",
__func__, __LINE__);
ret = -ENOMEM;
goto out_free_xdr_buf;
}
pr_info("ps3vram: allocated %u MiB of DDR memory\n",
(unsigned int) (ddr_size / 1024 / 1024));

/* Request context */
status = lv1_gpu_context_allocate(priv->memory_handle,
Expand All @@ -602,7 +613,8 @@ static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev)
&reports_lpar,
&reports_size);
if (status) {
pr_err("ps3vram: lv1_gpu_context_allocate failed\n");
dev_err(&dev->core, "%s:%d: lv1_gpu_context_allocate failed\n",
__func__, __LINE__);
ret = -ENOMEM;
goto out_free_memory;
}
Expand All @@ -612,28 +624,32 @@ static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev)
ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)),
XDR_BUF_SIZE, 0);
if (status) {
pr_err("ps3vram: lv1_gpu_context_iomap failed\n");
dev_err(&dev->core, "%s:%d: lv1_gpu_context_iomap failed\n",
__func__, __LINE__);
ret = -ENOMEM;
goto out_free_context;
}

priv->base = ioremap(ddr_lpar, ddr_size);
if (!priv->base) {
pr_err("ps3vram: ioremap failed\n");
dev_err(&dev->core, "%s:%d: ioremap failed\n", __func__,
__LINE__);
ret = -ENOMEM;
goto out_free_context;
}

priv->ctrl = ioremap(ctrl_lpar, 64 * 1024);
if (!priv->ctrl) {
pr_err("ps3vram: ioremap failed\n");
dev_err(&dev->core, "%s:%d: ioremap failed\n", __func__,
__LINE__);
ret = -ENOMEM;
goto out_unmap_vram;
}

priv->reports = ioremap(reports_lpar, reports_size);
if (!priv->reports) {
pr_err("ps3vram: ioremap failed\n");
dev_err(&dev->core, "%s:%d: ioremap failed\n", __func__,
__LINE__);
ret = -ENOMEM;
goto out_unmap_ctrl;
}
Expand Down Expand Up @@ -661,20 +677,24 @@ static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev)
ret = ps3vram_wait_ring(&ps3vram_mtd, 100);
mutex_unlock(&ps3_gpu_mutex);
if (ret < 0) {
pr_err("failed to initialize channels\n");
dev_err(&dev->core, "%s:%d: failed to initialize channels\n",
__func__, __LINE__);
ret = -ETIMEDOUT;
goto out_unmap_reports;
}

ps3vram_cache_init(&ps3vram_mtd);

if (add_mtd_device(&ps3vram_mtd)) {
pr_err("ps3vram: failed to register device\n");
dev_err(&dev->core, "%s:%d: add_mtd_device failed\n",
__func__, __LINE__);
ret = -EAGAIN;
goto out_cache_cleanup;
}

pr_info("ps3vram mtd device registered, %lu bytes\n", ddr_size);
dev_info(&dev->core, "reserved %u MiB of gpu memory\n",
(unsigned int)(ddr_size / 1024 / 1024));

return 0;

out_cache_cleanup:
Expand Down

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