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author | Hamish Guthrie <hcg@openwrt.org> | 2009-03-24 08:54:41 +0000 |
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committer | Hamish Guthrie <hcg@openwrt.org> | 2009-03-24 08:54:41 +0000 |
commit | 74b20050069bf139ff490f32435f27b927fb4ce7 (patch) | |
tree | c1cc6c53bf0a0eb89ebaf60d02359b15334b3e28 /target/linux/ps3/patches-2.6.28/0015-ps3-block-Replace-mtd-ps3vram-by-block-ps3vram.patch | |
parent | d0e357e729480d44369c2472081a587e4e5c5e12 (diff) | |
download | master-31e0f0ae-74b20050069bf139ff490f32435f27b927fb4ce7.tar.gz master-31e0f0ae-74b20050069bf139ff490f32435f27b927fb4ce7.tar.bz2 master-31e0f0ae-74b20050069bf139ff490f32435f27b927fb4ce7.zip |
ps3: update ps3vram patches
SVN-Revision: 15011
Diffstat (limited to 'target/linux/ps3/patches-2.6.28/0015-ps3-block-Replace-mtd-ps3vram-by-block-ps3vram.patch')
-rw-r--r-- | target/linux/ps3/patches-2.6.28/0015-ps3-block-Replace-mtd-ps3vram-by-block-ps3vram.patch | 1733 |
1 files changed, 1733 insertions, 0 deletions
diff --git a/target/linux/ps3/patches-2.6.28/0015-ps3-block-Replace-mtd-ps3vram-by-block-ps3vram.patch b/target/linux/ps3/patches-2.6.28/0015-ps3-block-Replace-mtd-ps3vram-by-block-ps3vram.patch new file mode 100644 index 0000000000..51642ea611 --- /dev/null +++ b/target/linux/ps3/patches-2.6.28/0015-ps3-block-Replace-mtd-ps3vram-by-block-ps3vram.patch @@ -0,0 +1,1733 @@ +From f507cd22035fdadd5dbb476dd05e9e7ee21c3b84 Mon Sep 17 00:00:00 2001 +From: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> +Date: Fri, 6 Mar 2009 02:54:09 +0000 +Subject: [PATCH] ps3/block: Replace mtd/ps3vram by block/ps3vram + +Convert the PS3 Video RAM Storage Driver from an MTD driver to a plain block +device driver. + +The ps3vram driver exposes unused video RAM on the PS3 as a block device +suitable for storage or swap. Fast data transfer is achieved using a local +cache in system RAM and DMA transfers via the GPU. + +The new driver is ca. 50% faster for reading, and ca. 10% for writing. + +Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> +Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> +Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> +--- + arch/powerpc/platforms/ps3/Kconfig | 7 + + drivers/block/Makefile | 1 + + drivers/block/ps3vram.c | 865 ++++++++++++++++++++++++++++++++++++ + drivers/mtd/devices/Kconfig | 7 - + drivers/mtd/devices/Makefile | 1 - + drivers/mtd/devices/ps3vram.c | 768 -------------------------------- + 6 files changed, 873 insertions(+), 776 deletions(-) + create mode 100644 drivers/block/ps3vram.c + delete mode 100644 drivers/mtd/devices/ps3vram.c + +diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig +index 920cf7a..740ef56 100644 +--- a/arch/powerpc/platforms/ps3/Kconfig ++++ b/arch/powerpc/platforms/ps3/Kconfig +@@ -128,6 +128,13 @@ config PS3_FLASH + be disabled on the kernel command line using "ps3flash=off", to + not allocate this fixed buffer. + ++config PS3_VRAM ++ tristate "PS3 Video RAM Storage Driver" ++ depends on FB_PS3=y && BLOCK && m ++ help ++ This driver allows you to use excess PS3 video RAM as volatile ++ storage or system swap. ++ + config PS3_LPM + tristate "PS3 Logical Performance Monitor support" + depends on PPC_PS3 +diff --git a/drivers/block/Makefile b/drivers/block/Makefile +index 204332b..87e120e 100644 +--- a/drivers/block/Makefile ++++ b/drivers/block/Makefile +@@ -9,6 +9,7 @@ obj-$(CONFIG_MAC_FLOPPY) += swim3.o + obj-$(CONFIG_BLK_DEV_FD) += floppy.o + obj-$(CONFIG_AMIGA_FLOPPY) += amiflop.o + obj-$(CONFIG_PS3_DISK) += ps3disk.o ++obj-$(CONFIG_PS3_VRAM) += ps3vram.o + obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o + obj-$(CONFIG_AMIGA_Z2RAM) += z2ram.o + obj-$(CONFIG_BLK_DEV_RAM) += brd.o +diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c +new file mode 100644 +index 0000000..393ed67 +--- /dev/null ++++ b/drivers/block/ps3vram.c +@@ -0,0 +1,865 @@ ++/* ++ * ps3vram - Use extra PS3 video ram as MTD block device. ++ * ++ * Copyright 2009 Sony Corporation ++ * ++ * Based on the MTD ps3vram driver, which is ++ * Copyright (c) 2007-2008 Jim Paris <jim@jtan.com> ++ * Added support RSX DMA Vivien Chappelier <vivien.chappelier@free.fr> ++ */ ++ ++#include <linux/blkdev.h> ++#include <linux/delay.h> ++#include <linux/proc_fs.h> ++#include <linux/seq_file.h> ++ ++#include <asm/firmware.h> ++#include <asm/lv1call.h> ++#include <asm/ps3.h> ++ ++ ++#define DEVICE_NAME "ps3vram" ++ ++ ++#define XDR_BUF_SIZE (2 * 1024 * 1024) /* XDR buffer (must be 1MiB aligned) */ ++#define XDR_IOIF 0x0c000000 ++ ++#define FIFO_BASE XDR_IOIF ++#define FIFO_SIZE (64 * 1024) ++ ++#define DMA_PAGE_SIZE (4 * 1024) ++ ++#define CACHE_PAGE_SIZE (256 * 1024) ++#define CACHE_PAGE_COUNT ((XDR_BUF_SIZE - FIFO_SIZE) / CACHE_PAGE_SIZE) ++ ++#define CACHE_OFFSET CACHE_PAGE_SIZE ++#define FIFO_OFFSET 0 ++ ++#define CTRL_PUT 0x10 ++#define CTRL_GET 0x11 ++#define CTRL_TOP 0x15 ++ ++#define UPLOAD_SUBCH 1 ++#define DOWNLOAD_SUBCH 2 ++ ++#define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c ++#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104 ++ ++#define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT 0x601 ++ ++#define CACHE_PAGE_PRESENT 1 ++#define CACHE_PAGE_DIRTY 2 ++ ++struct ps3vram_tag { ++ unsigned int address; ++ unsigned int flags; ++}; ++ ++struct ps3vram_cache { ++ unsigned int page_count; ++ unsigned int page_size; ++ struct ps3vram_tag *tags; ++ unsigned int hit; ++ unsigned int miss; ++}; ++ ++struct ps3vram_priv { ++ struct request_queue *queue; ++ struct gendisk *gendisk; ++ ++ u64 size; ++ ++ u64 memory_handle; ++ u64 context_handle; ++ u32 *ctrl; ++ u32 *reports; ++ u8 __iomem *ddr_base; ++ u8 *xdr_buf; ++ ++ u32 *fifo_base; ++ u32 *fifo_ptr; ++ ++ struct ps3vram_cache cache; ++ ++ /* Used to serialize cache/DMA operations */ ++ struct mutex lock; ++}; ++ ++ ++static int ps3vram_major; ++ ++ ++static struct block_device_operations ps3vram_fops = { ++ .owner = THIS_MODULE, ++}; ++ ++ ++#define DMA_NOTIFIER_HANDLE_BASE 0x66604200 /* first DMA notifier handle */ ++#define DMA_NOTIFIER_OFFSET_BASE 0x1000 /* first DMA notifier offset */ ++#define DMA_NOTIFIER_SIZE 0x40 ++#define NOTIFIER 7 /* notifier used for completion report */ ++ ++static char *size = "256M"; ++module_param(size, charp, 0); ++MODULE_PARM_DESC(size, "memory size"); ++ ++static u32 *ps3vram_get_notifier(u32 *reports, int notifier) ++{ ++ return (void *)reports + DMA_NOTIFIER_OFFSET_BASE + ++ DMA_NOTIFIER_SIZE * notifier; ++} ++ ++static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ u32 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); ++ int i; ++ ++ for (i = 0; i < 4; i++) ++ notify[i] = 0xffffffff; ++} ++ ++static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev, ++ unsigned int timeout_ms) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ u32 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); ++ unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); ++ ++ do { ++ if (!notify[3]) ++ return 0; ++ msleep(1); ++ } while (time_before(jiffies, timeout)); ++ ++ return -ETIMEDOUT; ++} ++ ++static void ps3vram_init_ring(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ ++ priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; ++ priv->ctrl[CTRL_GET] = FIFO_BASE + FIFO_OFFSET; ++} ++ ++static int ps3vram_wait_ring(struct ps3_system_bus_device *dev, ++ unsigned int timeout_ms) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); ++ ++ do { ++ if (priv->ctrl[CTRL_PUT] == priv->ctrl[CTRL_GET]) ++ return 0; ++ msleep(1); ++ } while (time_before(jiffies, timeout)); ++ ++ dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n", ++ priv->ctrl[CTRL_PUT], priv->ctrl[CTRL_GET], ++ priv->ctrl[CTRL_TOP]); ++ ++ return -ETIMEDOUT; ++} ++ ++static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data) ++{ ++ *(priv->fifo_ptr)++ = data; ++} ++ ++static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, u32 tag, ++ u32 size) ++{ ++ ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag); ++} ++ ++static void ps3vram_rewind_ring(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ int status; ++ ++ ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET)); ++ ++ priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; ++ ++ /* asking the HV for a blit will kick the FIFO */ ++ status = lv1_gpu_context_attribute(priv->context_handle, ++ L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT, 0, ++ 0, 0, 0); ++ if (status) ++ dev_err(&dev->core, ++ "%s: lv1_gpu_context_attribute failed %d\n", __func__, ++ status); ++ ++ priv->fifo_ptr = priv->fifo_base; ++} ++ ++static void ps3vram_fire_ring(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ int status; ++ ++ mutex_lock(&ps3_gpu_mutex); ++ ++ priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET + ++ (priv->fifo_ptr - priv->fifo_base) * sizeof(u32); ++ ++ /* asking the HV for a blit will kick the FIFO */ ++ status = lv1_gpu_context_attribute(priv->context_handle, ++ L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT, 0, ++ 0, 0, 0); ++ if (status) ++ dev_err(&dev->core, ++ "%s: lv1_gpu_context_attribute failed %d\n", __func__, ++ status); ++ ++ if ((priv->fifo_ptr - priv->fifo_base) * sizeof(u32) > ++ FIFO_SIZE - 1024) { ++ dev_dbg(&dev->core, "FIFO full, rewinding\n"); ++ ps3vram_wait_ring(dev, 200); ++ ps3vram_rewind_ring(dev); ++ } ++ ++ mutex_unlock(&ps3_gpu_mutex); ++} ++ ++static void ps3vram_bind(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ ++ ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0, 1); ++ ps3vram_out_ring(priv, 0x31337303); ++ ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x180, 3); ++ ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); ++ ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ ++ ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ ++ ++ ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0, 1); ++ ps3vram_out_ring(priv, 0x3137c0de); ++ ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x180, 3); ++ ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); ++ ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ ++ ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ ++ ++ ps3vram_fire_ring(dev); ++} ++ ++static int ps3vram_upload(struct ps3_system_bus_device *dev, ++ unsigned int src_offset, unsigned int dst_offset, ++ int len, int count) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ ++ ps3vram_begin_ring(priv, UPLOAD_SUBCH, ++ NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); ++ ps3vram_out_ring(priv, XDR_IOIF + src_offset); ++ ps3vram_out_ring(priv, dst_offset); ++ ps3vram_out_ring(priv, len); ++ ps3vram_out_ring(priv, len); ++ ps3vram_out_ring(priv, len); ++ ps3vram_out_ring(priv, count); ++ ps3vram_out_ring(priv, (1 << 8) | 1); ++ ps3vram_out_ring(priv, 0); ++ ++ ps3vram_notifier_reset(dev); ++ ps3vram_begin_ring(priv, UPLOAD_SUBCH, ++ NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); ++ ps3vram_out_ring(priv, 0); ++ ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x100, 1); ++ ps3vram_out_ring(priv, 0); ++ ps3vram_fire_ring(dev); ++ if (ps3vram_notifier_wait(dev, 200) < 0) { ++ dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); ++ return -1; ++ } ++ ++ return 0; ++} ++ ++static int ps3vram_download(struct ps3_system_bus_device *dev, ++ unsigned int src_offset, unsigned int dst_offset, ++ int len, int count) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ ++ ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, ++ NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); ++ ps3vram_out_ring(priv, src_offset); ++ ps3vram_out_ring(priv, XDR_IOIF + dst_offset); ++ ps3vram_out_ring(priv, len); ++ ps3vram_out_ring(priv, len); ++ ps3vram_out_ring(priv, len); ++ ps3vram_out_ring(priv, count); ++ ps3vram_out_ring(priv, (1 << 8) | 1); ++ ps3vram_out_ring(priv, 0); ++ ++ ps3vram_notifier_reset(dev); ++ ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, ++ NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); ++ ps3vram_out_ring(priv, 0); ++ ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x100, 1); ++ ps3vram_out_ring(priv, 0); ++ ps3vram_fire_ring(dev); ++ if (ps3vram_notifier_wait(dev, 200) < 0) { ++ dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); ++ return -1; ++ } ++ ++ return 0; ++} ++ ++static void ps3vram_cache_evict(struct ps3_system_bus_device *dev, int entry) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ struct ps3vram_cache *cache = &priv->cache; ++ ++ if (!(cache->tags[entry].flags & CACHE_PAGE_DIRTY)) ++ return; ++ ++ dev_dbg(&dev->core, "Flushing %d: 0x%08x\n", entry, ++ cache->tags[entry].address); ++ if (ps3vram_upload(dev, CACHE_OFFSET + entry * cache->page_size, ++ cache->tags[entry].address, DMA_PAGE_SIZE, ++ cache->page_size / DMA_PAGE_SIZE) < 0) { ++ dev_err(&dev->core, ++ "Failed to upload from 0x%x to " "0x%x size 0x%x\n", ++ entry * cache->page_size, cache->tags[entry].address, ++ cache->page_size); ++ } ++ cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY; ++} ++ ++static void ps3vram_cache_load(struct ps3_system_bus_device *dev, int entry, ++ unsigned int address) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ struct ps3vram_cache *cache = &priv->cache; ++ ++ dev_dbg(&dev->core, "Fetching %d: 0x%08x\n", entry, address); ++ if (ps3vram_download(dev, address, ++ CACHE_OFFSET + entry * cache->page_size, ++ DMA_PAGE_SIZE, ++ cache->page_size / DMA_PAGE_SIZE) < 0) { ++ dev_err(&dev->core, ++ "Failed to download from 0x%x to 0x%x size 0x%x\n", ++ address, entry * cache->page_size, cache->page_size); ++ } ++ ++ cache->tags[entry].address = address; ++ cache->tags[entry].flags |= CACHE_PAGE_PRESENT; ++} ++ ++ ++static void ps3vram_cache_flush(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ struct ps3vram_cache *cache = &priv->cache; ++ int i; ++ ++ dev_dbg(&dev->core, "FLUSH\n"); ++ for (i = 0; i < cache->page_count; i++) { ++ ps3vram_cache_evict(dev, i); ++ cache->tags[i].flags = 0; ++ } ++} ++ ++static unsigned int ps3vram_cache_match(struct ps3_system_bus_device *dev, ++ loff_t address) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ struct ps3vram_cache *cache = &priv->cache; ++ unsigned int base; ++ unsigned int offset; ++ int i; ++ static int counter; ++ ++ offset = (unsigned int) (address & (cache->page_size - 1)); ++ base = (unsigned int) (address - offset); ++ ++ /* fully associative check */ ++ for (i = 0; i < cache->page_count; i++) { ++ if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) && ++ cache->tags[i].address == base) { ++ cache->hit++; ++ dev_dbg(&dev->core, "Found entry %d: 0x%08x\n", i, ++ cache->tags[i].address); ++ return i; ++ } ++ } ++ ++ /* choose a random entry */ ++ i = (jiffies + (counter++)) % cache->page_count; ++ dev_dbg(&dev->core, "Using entry %d\n", i); ++ ++ ps3vram_cache_evict(dev, i); ++ ps3vram_cache_load(dev, i, base); ++ ++ cache->miss++; ++ return i; ++} ++ ++static int ps3vram_cache_init(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ ++ 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) { ++ dev_err(&dev->core, "Could not allocate cache tags\n"); ++ return -ENOMEM; ++ } ++ ++ dev_info(&dev->core, "Created ram cache: %d entries, %d KiB each\n", ++ CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024); ++ ++ return 0; ++} ++ ++static void ps3vram_cache_cleanup(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ ++ ps3vram_cache_flush(dev); ++ kfree(priv->cache.tags); ++} ++ ++static int ps3vram_read(struct ps3_system_bus_device *dev, loff_t from, ++ size_t len, size_t *retlen, u_char *buf) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ unsigned int cached, count; ++ ++ dev_dbg(&dev->core, "%s: from=0x%08x len=0x%zx\n", __func__, ++ (unsigned int)from, len); ++ ++ if (from >= priv->size) ++ return -EIO; ++ ++ if (len > priv->size - from) ++ len = priv->size - from; ++ ++ /* Copy from vram to buf */ ++ count = len; ++ while (count) { ++ unsigned int offset, avail; ++ unsigned int entry; ++ ++ offset = (unsigned int) (from & (priv->cache.page_size - 1)); ++ avail = priv->cache.page_size - offset; ++ ++ mutex_lock(&priv->lock); ++ ++ entry = ps3vram_cache_match(dev, from); ++ cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; ++ ++ dev_dbg(&dev->core, "%s: from=%08x cached=%08x offset=%08x " ++ "avail=%08x count=%08x\n", __func__, ++ (unsigned int)from, cached, offset, avail, count); ++ ++ if (avail > count) ++ avail = count; ++ memcpy(buf, priv->xdr_buf + cached, avail); ++ ++ mutex_unlock(&priv->lock); ++ ++ buf += avail; ++ count -= avail; ++ from += avail; ++ } ++ ++ *retlen = len; ++ return 0; ++} ++ ++static int ps3vram_write(struct ps3_system_bus_device *dev, loff_t to, ++ size_t len, size_t *retlen, const u_char *buf) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ unsigned int cached, count; ++ ++ if (to >= priv->size) ++ return -EIO; ++ ++ if (len > priv->size - to) ++ len = priv->size - to; ++ ++ /* Copy from buf to vram */ ++ count = len; ++ while (count) { ++ unsigned int offset, avail; ++ unsigned int entry; ++ ++ offset = (unsigned int) (to & (priv->cache.page_size - 1)); ++ avail = priv->cache.page_size - offset; ++ ++ mutex_lock(&priv->lock); ++ ++ entry = ps3vram_cache_match(dev, to); ++ cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; ++ ++ dev_dbg(&dev->core, "%s: to=%08x cached=%08x offset=%08x " ++ "avail=%08x count=%08x\n", __func__, (unsigned int)to, ++ cached, offset, avail, count); ++ ++ if (avail > count) ++ avail = count; ++ memcpy(priv->xdr_buf + cached, buf, avail); ++ ++ priv->cache.tags[entry].flags |= CACHE_PAGE_DIRTY; ++ ++ mutex_unlock(&priv->lock); ++ ++ buf += avail; ++ count -= avail; ++ to += avail; ++ } ++ ++ *retlen = len; ++ return 0; ++} ++ ++static int ps3vram_proc_show(struct seq_file *m, void *v) ++{ ++ struct ps3vram_priv *priv = m->private; ++ ++ seq_printf(m, "hit:%u\nmiss:%u\n", priv->cache.hit, priv->cache.miss); ++ return 0; ++} ++ ++static int ps3vram_proc_open(struct inode *inode, struct file *file) ++{ ++ return single_open(file, ps3vram_proc_show, PDE(inode)->data); ++} ++ ++static const struct file_operations ps3vram_proc_fops = { ++ .owner = THIS_MODULE, ++ .open = ps3vram_proc_open, ++ .read = seq_read, ++ .llseek = seq_lseek, ++ .release = single_release, ++}; ++ ++static void __devinit ps3vram_proc_init(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ struct proc_dir_entry *pde; ++ ++ pde = proc_create(DEVICE_NAME, 0444, NULL, &ps3vram_proc_fops); ++ if (!pde) { ++ dev_warn(&dev->core, "failed to create /proc entry\n"); ++ return; ++ } ++ ++ pde->owner = THIS_MODULE; ++ pde->data = priv; ++} ++ ++static int ps3vram_make_request(struct request_queue *q, struct bio *bio) ++{ ++ struct ps3_system_bus_device *dev = q->queuedata; ++ int write = bio_data_dir(bio) == WRITE; ++ const char *op = write ? "write" : "read"; ++ loff_t offset = bio->bi_sector << 9; ++ int error = 0; ++ struct bio_vec *bvec; ++ unsigned int i; ++ ++ dev_dbg(&dev->core, "%s\n", __func__); ++ ++ bio_for_each_segment(bvec, bio, i) { ++ /* PS3 is ppc64, so we don't handle highmem */ ++ char *ptr = page_address(bvec->bv_page) + bvec->bv_offset; ++ size_t len = bvec->bv_len, retlen; ++ ++ dev_dbg(&dev->core, " %s %zu bytes at offset %llu\n", op, ++ len, offset); ++ if (write) ++ error = ps3vram_write(dev, offset, len, &retlen, ptr); ++ else ++ error = ps3vram_read(dev, offset, len, &retlen, ptr); ++ ++ if (error) { ++ dev_err(&dev->core, "%s failed\n", op); ++ goto out; ++ } ++ ++ if (retlen != len) { ++ dev_err(&dev->core, "Short %s\n", op); ++ goto out; ++ } ++ ++ offset += len; ++ } ++ ++ dev_dbg(&dev->core, "%s completed\n", op); ++ ++out: ++ bio_endio(bio, error); ++ return 0; ++} ++ ++static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv; ++ int error, status; ++ struct request_queue *queue; ++ struct gendisk *gendisk; ++ u64 ddr_lpar, ctrl_lpar, info_lpar, reports_lpar, ddr_size, ++ reports_size; ++ char *rest; ++ ++ priv = kzalloc(sizeof(*priv), GFP_KERNEL); ++ if (!priv) { ++ error = -ENOMEM; ++ goto fail; ++ } ++ ++ mutex_init(&priv->lock); ++ dev->core.driver_data = priv; ++ ++ priv = dev->core.driver_data; ++ ++ /* Allocate XDR buffer (1MiB aligned) */ ++ priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL, ++ get_order(XDR_BUF_SIZE)); ++ if (priv->xdr_buf == NULL) { ++ dev_err(&dev->core, "Could not allocate XDR buffer\n"); ++ error = -ENOMEM; ++ goto fail_free_priv; ++ } ++ ++ /* Put FIFO at begginning of XDR buffer */ ++ priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET); ++ priv->fifo_ptr = priv->fifo_base; ++ ++ /* XXX: Need to open GPU, in case ps3fb or snd_ps3 aren't loaded */ ++ if (ps3_open_hv_device(dev)) { ++ dev_err(&dev->core, "ps3_open_hv_device failed\n"); ++ error = -EAGAIN; ++ goto out_close_gpu; ++ } ++ ++ /* Request memory */ ++ status = -1; ++ ddr_size = ALIGN(memparse(size, &rest), 1024*1024); ++ if (!ddr_size) { ++ dev_err(&dev->core, "Specified size is too small\n"); ++ error = -EINVAL; ++ goto out_close_gpu; ++ } ++ ++ while (ddr_size > 0) { ++ status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0, ++ &priv->memory_handle, ++ &ddr_lpar); ++ if (!status) ++ break; ++ ddr_size -= 1024*1024; ++ } ++ if (status) { ++ dev_err(&dev->core, "lv1_gpu_memory_allocate failed %d\n", ++ status); ++ error = -ENOMEM; ++ goto out_free_xdr_buf; ++ } ++ ++ /* Request context */ ++ status = lv1_gpu_context_allocate(priv->memory_handle, 0, ++ &priv->context_handle, &ctrl_lpar, ++ &info_lpar, &reports_lpar, ++ &reports_size); ++ if (status) { ++ dev_err(&dev->core, "lv1_gpu_context_allocate failed %d\n", ++ status); ++ error = -ENOMEM; ++ goto out_free_memory; ++ } ++ ++ /* Map XDR buffer to RSX */ ++ status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, ++ ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)), ++ XDR_BUF_SIZE, 0); ++ if (status) { ++ dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n", ++ status); ++ error = -ENOMEM; ++ goto out_free_context; ++ } ++ ++ priv->ddr_base = ioremap_flags(ddr_lpar, ddr_size, _PAGE_NO_CACHE); ++ ++ if (!priv->ddr_base) { ++ dev_err(&dev->core, "ioremap DDR failed\n"); ++ error = -ENOMEM; ++ goto out_free_context; ++ } ++ ++ priv->ctrl = ioremap(ctrl_lpar, 64 * 1024); ++ if (!priv->ctrl) { ++ dev_err(&dev->core, "ioremap CTRL failed\n"); ++ error = -ENOMEM; ++ goto out_unmap_vram; ++ } ++ ++ priv->reports = ioremap(reports_lpar, reports_size); ++ if (!priv->reports) { ++ dev_err(&dev->core, "ioremap REPORTS failed\n"); ++ error = -ENOMEM; ++ goto out_unmap_ctrl; ++ } ++ ++ mutex_lock(&ps3_gpu_mutex); ++ ps3vram_init_ring(dev); ++ mutex_unlock(&ps3_gpu_mutex); ++ ++ priv->size = ddr_size; ++ ++ ps3vram_bind(dev); ++ ++ mutex_lock(&ps3_gpu_mutex); ++ error = ps3vram_wait_ring(dev, 100); ++ mutex_unlock(&ps3_gpu_mutex); ++ if (error < 0) { ++ dev_err(&dev->core, "Failed to initialize channels\n"); ++ error = -ETIMEDOUT; ++ goto out_unmap_reports; ++ } ++ ++ ps3vram_cache_init(dev); ++ ps3vram_proc_init(dev); ++ ++ queue = blk_alloc_queue(GFP_KERNEL); ++ if (!queue) { ++ dev_err(&dev->core, "blk_alloc_queue failed\n"); ++ error = -ENOMEM; ++ goto out_cache_cleanup; ++ } ++ ++ priv->queue = queue; ++ queue->queuedata = dev; ++ blk_queue_make_request(queue, ps3vram_make_request); ++ blk_queue_max_phys_segments(queue, MAX_PHYS_SEGMENTS); ++ blk_queue_max_hw_segments(queue, MAX_HW_SEGMENTS); ++ blk_queue_max_segment_size(queue, MAX_SEGMENT_SIZE); ++ blk_queue_max_sectors(queue, SAFE_MAX_SECTORS); ++ ++ gendisk = alloc_disk(1); ++ if (!gendisk) { ++ dev_err(&dev->core, "alloc_disk failed\n"); ++ error = -ENOMEM; ++ goto fail_cleanup_queue; ++ } ++ ++ priv->gendisk = gendisk; ++ gendisk->major = ps3vram_major; ++ gendisk->first_minor = 0; ++ gendisk->fops = &ps3vram_fops; ++ gendisk->queue = queue; ++ gendisk->private_data = dev; ++ gendisk->driverfs_dev = &dev->core; ++ strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name)); ++ set_capacity(gendisk, priv->size >> 9); ++ ++ dev_info(&dev->core, "%s: Using %lu MiB of GPU memory\n", ++ gendisk->disk_name, get_capacity(gendisk) >> 11); ++ ++ add_disk(gendisk); ++ return 0; ++ ++fail_cleanup_queue: ++ blk_cleanup_queue(queue); ++out_cache_cleanup: ++ remove_proc_entry(DEVICE_NAME, NULL); ++ ps3vram_cache_cleanup(dev); ++out_unmap_reports: ++ iounmap(priv->reports); ++out_unmap_ctrl: ++ iounmap(priv->ctrl); ++out_unmap_vram: ++ iounmap(priv->ddr_base); ++out_free_context: ++ lv1_gpu_context_free(priv->context_handle); ++out_free_memory: ++ lv1_gpu_memory_free(priv->memory_handle); ++out_close_gpu: ++ ps3_close_hv_device(dev); ++out_free_xdr_buf: ++ free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); ++fail_free_priv: ++ kfree(priv); ++ dev->core.driver_data = NULL; ++fail: ++ return error; ++} ++ ++static int ps3vram_remove(struct ps3_system_bus_device *dev) ++{ ++ struct ps3vram_priv *priv = dev->core.driver_data; ++ ++ del_gendisk(priv->gendisk); ++ put_disk(priv->gendisk); ++ blk_cleanup_queue(priv->queue); ++ remove_proc_entry(DEVICE_NAME, NULL); ++ ps3vram_cache_cleanup(dev); ++ iounmap(priv->reports); ++ iounmap(priv->ctrl); ++ iounmap(priv->ddr_base); ++ lv1_gpu_context_free(priv->context_handle); ++ lv1_gpu_memory_free(priv->memory_handle); ++ ps3_close_hv_device(dev); ++ free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); ++ kfree(priv); ++ dev->core.driver_data = NULL; ++ return 0; ++} ++ ++static struct ps3_system_bus_driver ps3vram = { ++ .match_id = PS3_MATCH_ID_GPU, ++ .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK, ++ .core.name = DEVICE_NAME, ++ .core.owner = THIS_MODULE, ++ .probe = ps3vram_probe, ++ .remove = ps3vram_remove, ++ .shutdown = ps3vram_remove, ++}; ++ ++ ++static int __init ps3vram_init(void) ++{ ++ int error; ++ ++ if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) ++ return -ENODEV; ++ ++ error = register_blkdev(0, DEVICE_NAME); ++ if (error <= 0) { ++ pr_err("%s: register_blkdev failed %d\n", DEVICE_NAME, error); ++ return error; ++ } ++ ps3vram_major = error; ++ ++ pr_info("%s: registered block device major %d\n", DEVICE_NAME, ++ ps3vram_major); ++ ++ error = ps3_system_bus_driver_register(&ps3vram); ++ if (error) ++ unregister_blkdev(ps3vram_major, DEVICE_NAME); ++ ++ return error; ++} ++ ++static void __exit ps3vram_exit(void) ++{ ++ ps3_system_bus_driver_unregister(&ps3vram); ++ unregister_blkdev(ps3vram_major, DEVICE_NAME); ++} ++ ++module_init(ps3vram_init); ++module_exit(ps3vram_exit); ++ ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("PS3 Video RAM Storage Driver"); ++MODULE_AUTHOR("Sony Corporation"); ++MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK); +diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig +index bc33200..6fde0a2 100644 +--- a/drivers/mtd/devices/Kconfig ++++ b/drivers/mtd/devices/Kconfig +@@ -120,13 +120,6 @@ config MTD_PHRAM + doesn't have access to, memory beyond the mem=xxx limit, nvram, + memory on the video card, etc... + +-config MTD_PS3VRAM +- tristate "PS3 video RAM" +- depends on FB_PS3 +- help +- This driver allows you to use excess PS3 video RAM as volatile +- storage or system swap. +- + config MTD_LART + tristate "28F160xx flash driver for LART" + depends on SA1100_LART +diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile +index e51521d..0993d5c 100644 +--- a/drivers/mtd/devices/Makefile ++++ b/drivers/mtd/devices/Makefile +@@ -16,4 +16,3 @@ obj-$(CONFIG_MTD_LART) += lart.o + obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o + obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o + obj-$(CONFIG_MTD_M25P80) += m25p80.o +-obj-$(CONFIG_MTD_PS3VRAM) += ps3vram.o +diff --git a/drivers/mtd/devices/ps3vram.c b/drivers/mtd/devices/ps3vram.c +deleted file mode 100644 +index d21e9be..0000000 +--- a/drivers/mtd/devices/ps3vram.c ++++ /dev/null +@@ -1,768 +0,0 @@ +-/** +- * ps3vram - Use extra PS3 video ram as MTD block device. +- * +- * Copyright (c) 2007-2008 Jim Paris <jim@jtan.com> +- * Added support RSX DMA Vivien Chappelier <vivien.chappelier@free.fr> +- */ +- +-#include <linux/io.h> +-#include <linux/mm.h> +-#include <linux/init.h> +-#include <linux/kernel.h> +-#include <linux/list.h> +-#include <linux/module.h> +-#include <linux/moduleparam.h> +-#include <linux/slab.h> +-#include <linux/version.h> +-#include <linux/gfp.h> +-#include <linux/delay.h> +-#include <linux/mtd/mtd.h> +- +-#include <asm/lv1call.h> +-#include <asm/ps3.h> +- +-#define DEVICE_NAME "ps3vram" +- +-#define XDR_BUF_SIZE (2 * 1024 * 1024) /* XDR buffer (must be 1MiB aligned) */ +-#define XDR_IOIF 0x0c000000 +- +-#define FIFO_BASE XDR_IOIF +-#define FIFO_SIZE (64 * 1024) +- +-#define DMA_PAGE_SIZE (4 * 1024) +- +-#define CACHE_PAGE_SIZE (256 * 1024) +-#define CACHE_PAGE_COUNT ((XDR_BUF_SIZE - FIFO_SIZE) / CACHE_PAGE_SIZE) +- +-#define CACHE_OFFSET CACHE_PAGE_SIZE +-#define FIFO_OFFSET 0 +- +-#define CTRL_PUT 0x10 +-#define CTRL_GET 0x11 +-#define CTRL_TOP 0x15 +- +-#define UPLOAD_SUBCH 1 +-#define DOWNLOAD_SUBCH 2 +- +-#define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c +-#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104 +- +-#define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT 0x601 +- +-struct mtd_info ps3vram_mtd; +- +-#define CACHE_PAGE_PRESENT 1 +-#define CACHE_PAGE_DIRTY 2 +- +-struct ps3vram_tag { +- unsigned int address; +- unsigned int flags; +-}; +- +-struct ps3vram_cache { +- unsigned int page_count; +- unsigned int page_size; +- struct ps3vram_tag *tags; +-}; +- +-struct ps3vram_priv { +- u64 memory_handle; +- u64 context_handle; +- u32 *ctrl; +- u32 *reports; +- u8 __iomem *ddr_base; +- u8 *xdr_buf; +- +- u32 *fifo_base; +- u32 *fifo_ptr; +- +- struct device *dev; +- struct ps3vram_cache cache; +- +- /* Used to serialize cache/DMA operations */ +- struct mutex lock; +-}; +- +-#define DMA_NOTIFIER_HANDLE_BASE 0x66604200 /* first DMA notifier handle */ +-#define DMA_NOTIFIER_OFFSET_BASE 0x1000 /* first DMA notifier offset */ +-#define DMA_NOTIFIER_SIZE 0x40 +-#define NOTIFIER 7 /* notifier used for completion report */ +- +-/* A trailing '-' means to subtract off ps3fb_videomemory.size */ +-char *size = "256M-"; +-module_param(size, charp, 0); +-MODULE_PARM_DESC(size, "memory size"); +- +-static u32 *ps3vram_get_notifier(u32 *reports, int notifier) +-{ +- return (void *) reports + +- DMA_NOTIFIER_OFFSET_BASE + +- DMA_NOTIFIER_SIZE * notifier; +-} +- +-static void ps3vram_notifier_reset(struct mtd_info *mtd) +-{ +- int i; +- +- struct ps3vram_priv *priv = mtd->priv; +- u32 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); +- for (i = 0; i < 4; i++) +- notify[i] = 0xffffffff; +-} +- +-static int ps3vram_notifier_wait(struct mtd_info *mtd, unsigned int timeout_ms) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- u32 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); +- unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); +- +- do { +- if (!notify[3]) +- return 0; +- msleep(1); +- } while (time_before(jiffies, timeout)); +- +- return -ETIMEDOUT; +-} +- +-static void ps3vram_init_ring(struct mtd_info *mtd) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- +- priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; +- priv->ctrl[CTRL_GET] = FIFO_BASE + FIFO_OFFSET; +-} +- +-static int ps3vram_wait_ring(struct mtd_info *mtd, unsigned int timeout_ms) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); +- +- do { +- if (priv->ctrl[CTRL_PUT] == priv->ctrl[CTRL_GET]) +- return 0; +- msleep(1); +- } while (time_before(jiffies, timeout)); +- +- 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; +-} +- +-static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data) +-{ +- *(priv->fifo_ptr)++ = data; +-} +- +-static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, +- u32 tag, u32 size) +-{ +- ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag); +-} +- +-static void ps3vram_rewind_ring(struct mtd_info *mtd) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- u64 status; +- +- ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET)); +- +- priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; +- +- /* asking the HV for a blit will kick the fifo */ +- status = lv1_gpu_context_attribute(priv->context_handle, +- L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT, +- 0, 0, 0, 0); +- if (status) +- dev_err(priv->dev, "%s:%d: lv1_gpu_context_attribute failed\n", +- __func__, __LINE__); +- +- priv->fifo_ptr = priv->fifo_base; +-} +- +-static void ps3vram_fire_ring(struct mtd_info *mtd) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- u64 status; +- +- mutex_lock(&ps3_gpu_mutex); +- +- priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET + +- (priv->fifo_ptr - priv->fifo_base) * sizeof(u32); +- +- /* asking the HV for a blit will kick the fifo */ +- status = lv1_gpu_context_attribute(priv->context_handle, +- L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT, +- 0, 0, 0, 0); +- if (status) +- dev_err(priv->dev, "%s:%d: lv1_gpu_context_attribute failed\n", +- __func__, __LINE__); +- +- if ((priv->fifo_ptr - priv->fifo_base) * sizeof(u32) > +- FIFO_SIZE - 1024) { +- dev_dbg(priv->dev, "%s:%d: fifo full, rewinding\n", __func__, +- __LINE__); +- ps3vram_wait_ring(mtd, 200); +- ps3vram_rewind_ring(mtd); +- } +- +- mutex_unlock(&ps3_gpu_mutex); +-} +- +-static void ps3vram_bind(struct mtd_info *mtd) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- +- ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0, 1); +- ps3vram_out_ring(priv, 0x31337303); +- ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x180, 3); +- ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); +- ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ +- ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ +- +- ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0, 1); +- ps3vram_out_ring(priv, 0x3137c0de); +- ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x180, 3); +- ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); +- ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ +- ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ +- +- ps3vram_fire_ring(mtd); +-} +- +-static int ps3vram_upload(struct mtd_info *mtd, unsigned int src_offset, +- unsigned int dst_offset, int len, int count) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- +- ps3vram_begin_ring(priv, UPLOAD_SUBCH, +- NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); +- ps3vram_out_ring(priv, XDR_IOIF + src_offset); +- ps3vram_out_ring(priv, dst_offset); +- ps3vram_out_ring(priv, len); +- ps3vram_out_ring(priv, len); +- ps3vram_out_ring(priv, len); +- ps3vram_out_ring(priv, count); +- ps3vram_out_ring(priv, (1 << 8) | 1); +- ps3vram_out_ring(priv, 0); +- +- ps3vram_notifier_reset(mtd); +- ps3vram_begin_ring(priv, UPLOAD_SUBCH, +- NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); +- ps3vram_out_ring(priv, 0); +- ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x100, 1); +- ps3vram_out_ring(priv, 0); +- ps3vram_fire_ring(mtd); +- if (ps3vram_notifier_wait(mtd, 200) < 0) { +- dev_dbg(priv->dev, "%s:%d: notifier timeout\n", __func__, +- __LINE__); +- return -1; +- } +- +- return 0; +-} +- +-static int ps3vram_download(struct mtd_info *mtd, unsigned int src_offset, +- unsigned int dst_offset, int len, int count) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- +- ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, +- NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); +- ps3vram_out_ring(priv, src_offset); +- ps3vram_out_ring(priv, XDR_IOIF + dst_offset); +- ps3vram_out_ring(priv, len); +- ps3vram_out_ring(priv, len); +- ps3vram_out_ring(priv, len); +- ps3vram_out_ring(priv, count); +- ps3vram_out_ring(priv, (1 << 8) | 1); +- ps3vram_out_ring(priv, 0); +- +- ps3vram_notifier_reset(mtd); +- ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, +- NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); +- ps3vram_out_ring(priv, 0); +- ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x100, 1); +- ps3vram_out_ring(priv, 0); +- ps3vram_fire_ring(mtd); +- if (ps3vram_notifier_wait(mtd, 200) < 0) { +- dev_dbg(priv->dev, "%s:%d: notifier timeout\n", __func__, +- __LINE__); +- return -1; +- } +- +- return 0; +-} +- +-static void ps3vram_cache_evict(struct mtd_info *mtd, int entry) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- struct ps3vram_cache *cache = &priv->cache; +- +- if (cache->tags[entry].flags & CACHE_PAGE_DIRTY) { +- 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) { +- 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; +- } +-} +- +-static void ps3vram_cache_load(struct mtd_info *mtd, int entry, +- unsigned int address) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- struct ps3vram_cache *cache = &priv->cache; +- +- 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) { +- 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; +- cache->tags[entry].flags |= CACHE_PAGE_PRESENT; +-} +- +- +-static void ps3vram_cache_flush(struct mtd_info *mtd) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- struct ps3vram_cache *cache = &priv->cache; +- int i; +- +- 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; +- } +-} +- +-static unsigned int ps3vram_cache_match(struct mtd_info *mtd, loff_t address) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- struct ps3vram_cache *cache = &priv->cache; +- unsigned int base; +- unsigned int offset; +- int i; +- static int counter; +- +- offset = (unsigned int) (address & (cache->page_size - 1)); +- base = (unsigned int) (address - offset); +- +- /* fully associative check */ +- for (i = 0; i < cache->page_count; i++) { +- if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) && +- cache->tags[i].address == base) { +- 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; +- dev_dbg(priv->dev, "%s:%d: using entry %d\n", __func__, __LINE__, i); +- +- ps3vram_cache_evict(mtd, i); +- ps3vram_cache_load(mtd, i, base); +- +- return i; +-} +- +-static int ps3vram_cache_init(struct mtd_info *mtd) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- +- 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) { +- 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; +-} +- +-static void ps3vram_cache_cleanup(struct mtd_info *mtd) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- +- ps3vram_cache_flush(mtd); +- kfree(priv->cache.tags); +-} +- +-static int ps3vram_erase(struct mtd_info *mtd, struct erase_info *instr) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- +- if (instr->addr + instr->len > mtd->size) +- return -EINVAL; +- +- mutex_lock(&priv->lock); +- +- ps3vram_cache_flush(mtd); +- +- /* Set bytes to 0xFF */ +- memset_io(priv->ddr_base + instr->addr, 0xFF, instr->len); +- +- mutex_unlock(&priv->lock); +- +- instr->state = MTD_ERASE_DONE; +- mtd_erase_callback(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; +- +- 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; +- +- if (len > mtd->size - from) +- len = mtd->size - from; +- +- /* Copy from vram to buf */ +- count = len; +- while (count) { +- unsigned int offset, avail; +- unsigned int entry; +- +- offset = (unsigned int) (from & (priv->cache.page_size - 1)); +- avail = priv->cache.page_size - offset; +- +- mutex_lock(&priv->lock); +- +- entry = ps3vram_cache_match(mtd, from); +- cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; +- +- 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; +- memcpy(buf, priv->xdr_buf + cached, avail); +- +- mutex_unlock(&priv->lock); +- +- buf += avail; +- count -= avail; +- from += avail; +- } +- +- *retlen = len; +- return 0; +-} +- +-static int ps3vram_write(struct mtd_info *mtd, loff_t to, size_t len, +- size_t *retlen, const u_char *buf) +-{ +- struct ps3vram_priv *priv = mtd->priv; +- unsigned int cached, count; +- +- if (to >= mtd->size) +- return -EINVAL; +- +- if (len > mtd->size - to) +- len = mtd->size - to; +- +- /* Copy from buf to vram */ +- count = len; +- while (count) { +- unsigned int offset, avail; +- unsigned int entry; +- +- offset = (unsigned int) (to & (priv->cache.page_size - 1)); +- avail = priv->cache.page_size - offset; +- +- mutex_lock(&priv->lock); +- +- entry = ps3vram_cache_match(mtd, to); +- cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; +- +- 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; +- memcpy(priv->xdr_buf + cached, buf, avail); +- +- priv->cache.tags[entry].flags |= CACHE_PAGE_DIRTY; +- +- mutex_unlock(&priv->lock); +- +- buf += avail; +- count -= avail; +- to += avail; +- } +- +- *retlen = len; +- return 0; +-} +- +-static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev) +-{ +- struct ps3vram_priv *priv; +- int status; +- u64 ddr_lpar; +- u64 ctrl_lpar; +- u64 info_lpar; +- u64 reports_lpar; +- u64 ddr_size; +- u64 reports_size; +- int ret = -ENOMEM; +- char *rest; +- +- ret = -EIO; +- ps3vram_mtd.priv = kzalloc(sizeof(struct ps3vram_priv), GFP_KERNEL); +- if (!ps3vram_mtd.priv) +- goto out; +- priv = ps3vram_mtd.priv; +- +- mutex_init(&priv->lock); +- priv->dev = &dev->core; +- +- /* Allocate XDR buffer (1MiB aligned) */ +- priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL, +- get_order(XDR_BUF_SIZE)); +- if (priv->xdr_buf == NULL) { +- dev_dbg(&dev->core, "%s:%d: could not allocate XDR buffer\n", +- __func__, __LINE__); +- ret = -ENOMEM; +- goto out_free_priv; +- } +- +- /* Put FIFO at begginning of XDR buffer */ +- priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET); +- priv->fifo_ptr = priv->fifo_base; +- +- /* XXX: Need to open GPU, in case ps3fb or snd_ps3 aren't loaded */ +- if (ps3_open_hv_device(dev)) { +- dev_err(&dev->core, "%s:%d: ps3_open_hv_device failed\n", +- __func__, __LINE__); +- ret = -EAGAIN; +- goto out_close_gpu; +- } +- +- /* Request memory */ +- status = -1; +- ddr_size = memparse(size, &rest); +- if (*rest == '-') +- ddr_size -= ps3fb_videomemory.size; +- ddr_size = ALIGN(ddr_size, 1024*1024); +- if (ddr_size <= 0) { +- dev_err(&dev->core, "%s:%d: specified size is too small\n", +- __func__, __LINE__); +- ret = -EINVAL; +- goto out_close_gpu; +- } +- +- while (ddr_size > 0) { +- status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0, +- &priv->memory_handle, +- &ddr_lpar); +- if (!status) +- break; +- ddr_size -= 1024*1024; +- } +- if (status || ddr_size <= 0) { +- dev_err(&dev->core, "%s:%d: lv1_gpu_memory_allocate failed\n", +- __func__, __LINE__); +- ret = -ENOMEM; +- goto out_free_xdr_buf; +- } +- +- /* Request context */ +- status = lv1_gpu_context_allocate(priv->memory_handle, +- 0, +- &priv->context_handle, +- &ctrl_lpar, +- &info_lpar, +- &reports_lpar, +- &reports_size); +- if (status) { +- dev_err(&dev->core, "%s:%d: lv1_gpu_context_allocate failed\n", +- __func__, __LINE__); +- ret = -ENOMEM; +- goto out_free_memory; +- } +- +- /* Map XDR buffer to RSX */ +- status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, +- ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)), +- XDR_BUF_SIZE, 0); +- if (status) { +- dev_err(&dev->core, "%s:%d: lv1_gpu_context_iomap failed\n", +- __func__, __LINE__); +- ret = -ENOMEM; +- goto out_free_context; +- } +- +- priv->ddr_base = ioremap_flags(ddr_lpar, ddr_size, _PAGE_NO_CACHE); +- +- if (!priv->ddr_base) { +- 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) { +- 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) { +- dev_err(&dev->core, "%s:%d: ioremap failed\n", __func__, +- __LINE__); +- ret = -ENOMEM; +- goto out_unmap_ctrl; +- } +- +- mutex_lock(&ps3_gpu_mutex); +- ps3vram_init_ring(&ps3vram_mtd); +- mutex_unlock(&ps3_gpu_mutex); +- +- ps3vram_mtd.name = "ps3vram"; +- ps3vram_mtd.size = ddr_size; +- ps3vram_mtd.flags = MTD_CAP_RAM; +- ps3vram_mtd.erase = ps3vram_erase; +- ps3vram_mtd.point = NULL; +- ps3vram_mtd.unpoint = NULL; +- ps3vram_mtd.read = ps3vram_read; +- ps3vram_mtd.write = ps3vram_write; +- ps3vram_mtd.owner = THIS_MODULE; +- ps3vram_mtd.type = MTD_RAM; +- ps3vram_mtd.erasesize = CACHE_PAGE_SIZE; +- ps3vram_mtd.writesize = 1; +- +- ps3vram_bind(&ps3vram_mtd); +- +- mutex_lock(&ps3_gpu_mutex); +- ret = ps3vram_wait_ring(&ps3vram_mtd, 100); +- mutex_unlock(&ps3_gpu_mutex); +- if (ret < 0) { +- 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)) { +- dev_err(&dev->core, "%s:%d: add_mtd_device failed\n", +- __func__, __LINE__); +- ret = -EAGAIN; +- goto out_cache_cleanup; +- } +- +- dev_info(&dev->core, "reserved %u MiB of gpu memory\n", +- (unsigned int)(ddr_size / 1024 / 1024)); +- +- return 0; +- +-out_cache_cleanup: +- ps3vram_cache_cleanup(&ps3vram_mtd); +-out_unmap_reports: +- iounmap(priv->reports); +-out_unmap_ctrl: +- iounmap(priv->ctrl); +-out_unmap_vram: +- iounmap(priv->ddr_base); +-out_free_context: +- lv1_gpu_context_free(priv->context_handle); +-out_free_memory: +- lv1_gpu_memory_free(priv->memory_handle); +-out_close_gpu: +- ps3_close_hv_device(dev); +-out_free_xdr_buf: +- free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); +-out_free_priv: +- kfree(ps3vram_mtd.priv); +- ps3vram_mtd.priv = NULL; +-out: +- return ret; +-} +- +-static int ps3vram_shutdown(struct ps3_system_bus_device *dev) +-{ +- struct ps3vram_priv *priv; +- +- priv = ps3vram_mtd.priv; +- +- del_mtd_device(&ps3vram_mtd); +- ps3vram_cache_cleanup(&ps3vram_mtd); +- iounmap(priv->reports); +- iounmap(priv->ctrl); +- iounmap(priv->ddr_base); +- lv1_gpu_context_free(priv->context_handle); +- lv1_gpu_memory_free(priv->memory_handle); +- ps3_close_hv_device(dev); +- free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); +- kfree(priv); +- return 0; +-} +- +-static struct ps3_system_bus_driver ps3vram_driver = { +- .match_id = PS3_MATCH_ID_GPU, +- .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK, +- .core.name = DEVICE_NAME, +- .core.owner = THIS_MODULE, +- .probe = ps3vram_probe, +- .remove = ps3vram_shutdown, +- .shutdown = ps3vram_shutdown, +-}; +- +-static int __init ps3vram_init(void) +-{ +- return ps3_system_bus_driver_register(&ps3vram_driver); +-} +- +-static void __exit ps3vram_exit(void) +-{ +- ps3_system_bus_driver_unregister(&ps3vram_driver); +-} +- +-module_init(ps3vram_init); +-module_exit(ps3vram_exit); +- +-MODULE_LICENSE("GPL"); +-MODULE_AUTHOR("Jim Paris <jim@jtan.com>"); +-MODULE_DESCRIPTION("MTD driver for PS3 video RAM"); +-MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK); +-- +1.6.0.4 + |