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Diffstat (limited to 'target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch')
-rw-r--r--target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch920
1 files changed, 0 insertions, 920 deletions
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
deleted file mode 100644
index 9278afe5ca..0000000000
--- a/target/linux/ps3/patches-2.6.28/0007-mtd-ps3vram-Add-ps3vram-driver-for-accessing-video.patch
+++ /dev/null
@@ -1,920 +0,0 @@
-From cffb4add03b1fc83026b06dc3664279cfbf70155 Mon Sep 17 00:00:00 2001
-From: Jim Paris <jim@jtan.com>
-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 <vivien.chappelier@free.fr>
-Signed-off-by: Jim Paris <jim@jtan.com>
-Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
-Acked-by: David Woodhouse <David.Woodhouse@intel.com>
-Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
----
- 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 <jim@jtan.com>
-+ * Added support RSX DMA Vivien Chappelier <vivien.chappelier@free.fr>
-+ */
-+
-+#include <linux/io.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
-+
-+#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 <jim@jtan.com>");
-+MODULE_DESCRIPTION("MTD driver for PS3 video RAM");
---
-1.6.0.4
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 13:14:20 +0000