From 40d2070d980a657a1b5e92bf509325a0b2b83753 Mon Sep 17 00:00:00 2001 From: hcg Date: Tue, 24 Mar 2009 08:54:41 +0000 Subject: ps3: update ps3vram patches git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15011 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- ...am-Add-ps3vram-driver-for-accessing-video.patch | 920 +++++++++++++++++++++ 1 file changed, 920 insertions(+) create mode 100644 target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch (limited to 'target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch') diff --git a/target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch b/target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch new file mode 100644 index 000000000..9278afe5c --- /dev/null +++ b/target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch @@ -0,0 +1,920 @@ +From cffb4add03b1fc83026b06dc3664279cfbf70155 Mon Sep 17 00:00:00 2001 +From: Jim Paris +Date: Tue, 6 Jan 2009 11:32:10 +0000 +Subject: [PATCH] mtd/ps3vram: Add ps3vram driver for accessing video RAM as MTD + +Add ps3vram driver, which exposes unused video RAM on the PS3 as a MTD +device suitable for storage or swap. Fast data transfer is achieved +using a local cache in system RAM and DMA transfers via the GPU. + +Signed-off-by: Vivien Chappelier +Signed-off-by: Jim Paris +Acked-by: Geoff Levand +Acked-by: David Woodhouse +Signed-off-by: Benjamin Herrenschmidt +--- + MAINTAINERS | 6 + + arch/powerpc/include/asm/ps3.h | 1 + + arch/powerpc/platforms/ps3/device-init.c | 37 ++ + drivers/mtd/devices/Kconfig | 7 + + drivers/mtd/devices/Makefile | 1 + + drivers/mtd/devices/ps3vram.c | 776 ++++++++++++++++++++++++++++++ + 6 files changed, 828 insertions(+), 0 deletions(-) + create mode 100644 drivers/mtd/devices/ps3vram.c + +diff --git a/MAINTAINERS b/MAINTAINERS +index a018844..246878f 100644 +--- a/MAINTAINERS ++++ b/MAINTAINERS +@@ -3484,6 +3484,12 @@ L: linuxppc-dev@ozlabs.org + L: cbe-oss-dev@ozlabs.org + S: Supported + ++PS3VRAM DRIVER ++P: Jim Paris ++M: jim@jtan.com ++L: cbe-oss-dev@ozlabs.org ++S: Maintained ++ + PVRUSB2 VIDEO4LINUX DRIVER + P: Mike Isely + M: isely@pobox.com +diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h +index cff30c0..66b6505 100644 +--- a/arch/powerpc/include/asm/ps3.h ++++ b/arch/powerpc/include/asm/ps3.h +@@ -320,6 +320,7 @@ enum ps3_match_id { + + enum ps3_match_sub_id { + PS3_MATCH_SUB_ID_GPU_FB = 1, ++ PS3_MATCH_SUB_ID_GPU_RAMDISK = 2, + }; + + #define PS3_MODULE_ALIAS_EHCI "ps3:1:0" +diff --git a/arch/powerpc/platforms/ps3/device-init.c b/arch/powerpc/platforms/ps3/device-init.c +index dbc124e..ca71a12 100644 +--- a/arch/powerpc/platforms/ps3/device-init.c ++++ b/arch/powerpc/platforms/ps3/device-init.c +@@ -518,6 +518,41 @@ fail_device_register: + return result; + } + ++static int __init ps3_register_ramdisk_device(void) ++{ ++ int result; ++ struct layout { ++ struct ps3_system_bus_device dev; ++ } *p; ++ ++ pr_debug(" -> %s:%d\n", __func__, __LINE__); ++ ++ p = kzalloc(sizeof(struct layout), GFP_KERNEL); ++ ++ if (!p) ++ return -ENOMEM; ++ ++ p->dev.match_id = PS3_MATCH_ID_GPU; ++ p->dev.match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK; ++ p->dev.dev_type = PS3_DEVICE_TYPE_IOC0; ++ ++ result = ps3_system_bus_device_register(&p->dev); ++ ++ if (result) { ++ pr_debug("%s:%d ps3_system_bus_device_register failed\n", ++ __func__, __LINE__); ++ goto fail_device_register; ++ } ++ ++ pr_debug(" <- %s:%d\n", __func__, __LINE__); ++ return 0; ++ ++fail_device_register: ++ kfree(p); ++ pr_debug(" <- %s:%d failed\n", __func__, __LINE__); ++ return result; ++} ++ + /** + * ps3_setup_dynamic_device - Setup a dynamic device from the repository + */ +@@ -946,6 +981,8 @@ static int __init ps3_register_devices(void) + + ps3_register_lpm_devices(); + ++ ps3_register_ramdisk_device(); ++ + pr_debug(" <- %s:%d\n", __func__, __LINE__); + return 0; + } +diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig +index 6fde0a2..bc33200 100644 +--- a/drivers/mtd/devices/Kconfig ++++ b/drivers/mtd/devices/Kconfig +@@ -120,6 +120,13 @@ 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 0993d5c..e51521d 100644 +--- a/drivers/mtd/devices/Makefile ++++ b/drivers/mtd/devices/Makefile +@@ -16,3 +16,4 @@ 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 +new file mode 100644 +index 0000000..26a4b57 +--- /dev/null ++++ b/drivers/mtd/devices/ps3vram.c +@@ -0,0 +1,776 @@ ++/** ++ * ps3vram - Use extra PS3 video ram as MTD block device. ++ * ++ * Copyright (c) 2007-2008 Jim Paris ++ * Added support RSX DMA Vivien Chappelier ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++#include ++ ++#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 ++ ++#define dbg(fmt, args...) \ ++ pr_debug("%s:%d " fmt "\n", __func__, __LINE__, ## args) ++ ++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 { ++ uint64_t memory_handle; ++ uint64_t context_handle; ++ uint8_t *base; ++ uint32_t *ctrl; ++ uint32_t *reports; ++ uint8_t *xdr_buf; ++ ++ uint32_t *fifo_base; ++ uint32_t *fifo_ptr; ++ ++ 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 NUM_NOTIFIERS 16 ++ ++#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 inline uint32_t *ps3vram_get_notifier(uint32_t *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; ++ uint32_t *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, int timeout_ms) ++{ ++ struct ps3vram_priv *priv = mtd->priv; ++ uint32_t *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); ++ ++ timeout_ms *= 1000; ++ ++ do { ++ if (notify[3] == 0) ++ return 0; ++ ++ if (timeout_ms) ++ udelay(1); ++ } while (timeout_ms--); ++ ++ return -1; ++} ++ ++static void ps3vram_dump_ring(struct mtd_info *mtd) ++{ ++ struct ps3vram_priv *priv = mtd->priv; ++ uint32_t *fifo; ++ ++ pr_info("PUT = %08x GET = %08x\n", priv->ctrl[CTRL_PUT], ++ priv->ctrl[CTRL_GET]); ++ for (fifo = priv->fifo_base; fifo < priv->fifo_ptr; fifo++) ++ pr_info("%p: %08x\n", fifo, *fifo); ++} ++ ++static void ps3vram_dump_reports(struct mtd_info *mtd) ++{ ++ struct ps3vram_priv *priv = mtd->priv; ++ int i; ++ ++ for (i = 0; i < NUM_NOTIFIERS; i++) { ++ uint32_t *n = ps3vram_get_notifier(priv->reports, i); ++ pr_info("%p: %08x\n", n, *n); ++ } ++} ++ ++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, int timeout) ++{ ++ struct ps3vram_priv *priv = mtd->priv; ++ ++ /* wait until setup commands are processed */ ++ timeout *= 1000; ++ while (--timeout) { ++ if (priv->ctrl[CTRL_PUT] == priv->ctrl[CTRL_GET]) ++ break; ++ 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]); ++ return -ETIMEDOUT; ++ } ++ ++ return 0; ++} ++ ++static inline void ps3vram_out_ring(struct ps3vram_priv *priv, uint32_t data) ++{ ++ *(priv->fifo_ptr)++ = data; ++} ++ ++static inline void ps3vram_begin_ring(struct ps3vram_priv *priv, uint32_t chan, ++ uint32_t tag, uint32_t 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) ++ pr_err("ps3vram: lv1_gpu_context_attribute FB_BLIT failed\n"); ++ ++ 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(uint32_t); ++ ++ /* 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) ++ pr_err("ps3vram: lv1_gpu_context_attribute FB_BLIT failed\n"); ++ ++ if ((priv->fifo_ptr - priv->fifo_base) * sizeof(uint32_t) > ++ FIFO_SIZE - 1024) { ++ dbg("fifo full, rewinding"); ++ 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) { ++ pr_err("notifier timeout\n"); ++ ps3vram_dump_ring(mtd); ++ ps3vram_dump_reports(mtd); ++ 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) { ++ pr_err("notifier timeout\n"); ++ ps3vram_dump_ring(mtd); ++ ps3vram_dump_reports(mtd); ++ 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) { ++ dbg("flushing %d : 0x%08x", 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); ++ } ++ 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; ++ ++ dbg("fetching %d : 0x%08x", 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); ++ } ++ ++ 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; ++ ++ dbg("FLUSH"); ++ 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) { ++ dbg("found entry %d : 0x%08x", ++ i, cache->tags[i].address); ++ return i; ++ } ++ } ++ ++ /* choose a random entry */ ++ i = (jiffies + (counter++)) % cache->page_count; ++ dbg("using cache entry %d", 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; ++ ++ 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"); ++ return -ENOMEM; ++ } ++ ++ 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(priv->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; ++ ++ dbg("from = 0x%08x len = 0x%zx", (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; ++ ++ dbg("from=%08x cached=%08x offset=%08x avail=%08x count=%08x", ++ (unsigned)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; ++ ++ dbg("to=%08x cached=%08x offset=%08x avail=%08x count=%08x", ++ (unsigned) 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; ++ uint64_t status; ++ uint64_t ddr_lpar, ctrl_lpar, info_lpar, reports_lpar; ++ int64_t ddr_size; ++ uint64_t 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); ++ ++ /* 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"); ++ ret = -ENOMEM; ++ goto out_free_priv; ++ } ++ ++ /* Put FIFO at begginning of XDR buffer */ ++ priv->fifo_base = (uint32_t *) (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)) { ++ pr_err("ps3vram: ps3_open_hv_device failed\n"); ++ 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) { ++ printk(KERN_ERR "ps3vram: specified size is too small\n"); ++ 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 == 0) ++ break; ++ ddr_size -= 1024*1024; ++ } ++ if (status != 0 || ddr_size <= 0) { ++ pr_err("ps3vram: lv1_gpu_memory_allocate failed\n"); ++ 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, ++ 0, ++ &priv->context_handle, ++ &ctrl_lpar, ++ &info_lpar, ++ &reports_lpar, ++ &reports_size); ++ if (status) { ++ pr_err("ps3vram: lv1_gpu_context_allocate failed\n"); ++ 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) { ++ pr_err("ps3vram: lv1_gpu_context_iomap failed\n"); ++ ret = -ENOMEM; ++ goto out_free_context; ++ } ++ ++ priv->base = ioremap(ddr_lpar, ddr_size); ++ if (!priv->base) { ++ pr_err("ps3vram: ioremap failed\n"); ++ ret = -ENOMEM; ++ goto out_free_context; ++ } ++ ++ priv->ctrl = ioremap(ctrl_lpar, 64 * 1024); ++ if (!priv->ctrl) { ++ pr_err("ps3vram: ioremap failed\n"); ++ ret = -ENOMEM; ++ goto out_unmap_vram; ++ } ++ ++ priv->reports = ioremap(reports_lpar, reports_size); ++ if (!priv->reports) { ++ pr_err("ps3vram: ioremap failed\n"); ++ 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) { ++ pr_err("failed to initialize channels\n"); ++ 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"); ++ ret = -EAGAIN; ++ goto out_cache_cleanup; ++ } ++ ++ pr_info("ps3vram mtd device registered, %lu bytes\n", ddr_size); ++ 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->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->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 "); ++MODULE_DESCRIPTION("MTD driver for PS3 video RAM"); +-- +1.6.0.4 + -- cgit v1.2.3