// SPDX-License-Identifier: GPL-2.0-only/* * ps3vram - Use extra PS3 video ram as 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/module.h>#include <linux/proc_fs.h>#include <linux/seq_file.h>#include <linux/slab.h> #include <asm/cell-regs.h>#include <asm/firmware.h>#include <asm/lv1call.h>#include <asm/ps3.h>#include <asm/ps3gpu.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 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 gendisk *gendisk; u64 size; u64 memory_handle; u64 context_handle; u32 __iomem *ctrl; void __iomem *reports; u8 *xdr_buf; u32 *fifo_base; u32 *fifo_ptr; struct ps3vram_cache cache; spinlock_t lock; /* protecting list of bios */ struct bio_list list;}; static int ps3vram_major; #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 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier){ return reports + DMA_NOTIFIER_OFFSET_BASE + DMA_NOTIFIER_SIZE * notifier;} static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev){ struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); int i; for (i = 0; i < 4; i++) iowrite32be(0xffffffff, notify + i);} static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev, unsigned int timeout_ms){ struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); unsigned long timeout; for (timeout = 20; timeout; timeout--) { if (!ioread32be(notify + 3)) return 0; udelay(10); } timeout = jiffies + msecs_to_jiffies(timeout_ms); do { if (!ioread32be(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 = ps3_system_bus_get_drvdata(dev); iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_GET);} static int ps3vram_wait_ring(struct ps3_system_bus_device *dev, unsigned int timeout_ms){ struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); do { if (ioread32be(priv->ctrl + CTRL_PUT) == ioread32be(priv->ctrl + CTRL_GET)) return 0; msleep(1); } while (time_before(jiffies, timeout)); dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n", ioread32be(priv->ctrl + CTRL_PUT), ioread32be(priv->ctrl + CTRL_GET), ioread32be(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 = ps3_system_bus_get_drvdata(dev); int status; ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET)); iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); /* asking the HV for a blit will kick the FIFO */ status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); if (status) dev_err(&dev->core, "%s: lv1_gpu_fb_blit 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 = ps3_system_bus_get_drvdata(dev); int status; mutex_lock(&ps3_gpu_mutex); iowrite32be(FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base) * sizeof(u32), priv->ctrl + CTRL_PUT); /* asking the HV for a blit will kick the FIFO */ status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); if (status) dev_err(&dev->core, "%s: lv1_gpu_fb_blit 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); priv->cache.page_count = CACHE_PAGE_COUNT; priv->cache.page_size = CACHE_PAGE_SIZE; priv->cache.tags = kzalloc_objs(struct ps3vram_tag, CACHE_PAGE_COUNT); if (!priv->cache.tags) 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 = ps3_system_bus_get_drvdata(dev); ps3vram_cache_flush(dev); kfree(priv->cache.tags);} static blk_status_t ps3vram_read(struct ps3_system_bus_device *dev, loff_t from, size_t len, size_t *retlen, u_char *buf){ struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 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 BLK_STS_IOERR; 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; 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); buf += avail; count -= avail; from += avail; } *retlen = len; return 0;} static blk_status_t 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 = ps3_system_bus_get_drvdata(dev); unsigned int cached, count; if (to >= priv->size) return BLK_STS_IOERR; 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; 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; buf += avail;Lines 1–500 of 851. 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// SPDX-License-Identifier: GPL-2.0-only /* * ps3vram - Use extra PS3 video ram as 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/module.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <asm/cell-regs.h> #include <asm/firmware.h> #include <asm/lv1call.h> #include <asm/ps3.h> #include <asm/ps3gpu.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 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 gendisk *gendisk; u64 size; u64 memory_handle; u64 context_handle; u32 __iomem *ctrl; void __iomem *reports; u8 *xdr_buf; u32 *fifo_base; u32 *fifo_ptr; struct ps3vram_cache cache; spinlock_t lock; /* protecting list of bios */ struct bio_list list; }; static int ps3vram_major; #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 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier) { return reports + DMA_NOTIFIER_OFFSET_BASE + DMA_NOTIFIER_SIZE * notifier; } static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev) { struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); int i; for (i = 0; i < 4; i++) iowrite32be(0xffffffff, notify + i); } static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev, unsigned int timeout_ms) { struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); unsigned long timeout; for (timeout = 20; timeout; timeout--) { if (!ioread32be(notify + 3)) return 0; udelay(10); } timeout = jiffies + msecs_to_jiffies(timeout_ms); do { if (!ioread32be(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 = ps3_system_bus_get_drvdata(dev); iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_GET); } static int ps3vram_wait_ring(struct ps3_system_bus_device *dev, unsigned int timeout_ms) { struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); do { if (ioread32be(priv->ctrl + CTRL_PUT) == ioread32be(priv->ctrl + CTRL_GET)) return 0; msleep(1); } while (time_before(jiffies, timeout)); dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n", ioread32be(priv->ctrl + CTRL_PUT), ioread32be(priv->ctrl + CTRL_GET), ioread32be(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 = ps3_system_bus_get_drvdata(dev); int status; ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET)); iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); /* asking the HV for a blit will kick the FIFO */ status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); if (status) dev_err(&dev->core, "%s: lv1_gpu_fb_blit 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 = ps3_system_bus_get_drvdata(dev); int status; mutex_lock(&ps3_gpu_mutex); iowrite32be(FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base) * sizeof(u32), priv->ctrl + CTRL_PUT); /* asking the HV for a blit will kick the FIFO */ status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); if (status) dev_err(&dev->core, "%s: lv1_gpu_fb_blit 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); 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 = ps3_system_bus_get_drvdata(dev); priv->cache.page_count = CACHE_PAGE_COUNT; priv->cache.page_size = CACHE_PAGE_SIZE; priv->cache.tags = kzalloc_objs(struct ps3vram_tag, CACHE_PAGE_COUNT); if (!priv->cache.tags) 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 = ps3_system_bus_get_drvdata(dev); ps3vram_cache_flush(dev); kfree(priv->cache.tags); } static blk_status_t ps3vram_read(struct ps3_system_bus_device *dev, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); 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 BLK_STS_IOERR; 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; 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); buf += avail; count -= avail; from += avail; } *retlen = len; return 0; } static blk_status_t 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 = ps3_system_bus_get_drvdata(dev); unsigned int cached, count; if (to >= priv->size) return BLK_STS_IOERR; 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; 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; buf += avail;