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869 lines
22 KiB
869 lines
22 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* ps3vram - Use extra PS3 video ram as block device. |
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* |
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* Copyright 2009 Sony Corporation |
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* |
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* Based on the MTD ps3vram driver, which is |
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* Copyright (c) 2007-2008 Jim Paris <[email protected]> |
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* Added support RSX DMA Vivien Chappelier <[email protected]> |
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*/ |
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#include <linux/blkdev.h> |
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#include <linux/delay.h> |
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#include <linux/module.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include <linux/slab.h> |
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#include <asm/cell-regs.h> |
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#include <asm/firmware.h> |
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#include <asm/lv1call.h> |
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#include <asm/ps3.h> |
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#include <asm/ps3gpu.h> |
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#define DEVICE_NAME "ps3vram" |
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#define XDR_BUF_SIZE (2 * 1024 * 1024) /* XDR buffer (must be 1MiB aligned) */ |
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#define XDR_IOIF 0x0c000000 |
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#define FIFO_BASE XDR_IOIF |
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#define FIFO_SIZE (64 * 1024) |
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#define DMA_PAGE_SIZE (4 * 1024) |
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#define CACHE_PAGE_SIZE (256 * 1024) |
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#define CACHE_PAGE_COUNT ((XDR_BUF_SIZE - FIFO_SIZE) / CACHE_PAGE_SIZE) |
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#define CACHE_OFFSET CACHE_PAGE_SIZE |
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#define FIFO_OFFSET 0 |
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#define CTRL_PUT 0x10 |
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#define CTRL_GET 0x11 |
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#define CTRL_TOP 0x15 |
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#define UPLOAD_SUBCH 1 |
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#define DOWNLOAD_SUBCH 2 |
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#define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c |
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#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104 |
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#define CACHE_PAGE_PRESENT 1 |
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#define CACHE_PAGE_DIRTY 2 |
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struct ps3vram_tag { |
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unsigned int address; |
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unsigned int flags; |
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}; |
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struct ps3vram_cache { |
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unsigned int page_count; |
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unsigned int page_size; |
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struct ps3vram_tag *tags; |
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unsigned int hit; |
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unsigned int miss; |
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}; |
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struct ps3vram_priv { |
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struct request_queue *queue; |
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struct gendisk *gendisk; |
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u64 size; |
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u64 memory_handle; |
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u64 context_handle; |
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u32 __iomem *ctrl; |
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void __iomem *reports; |
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u8 *xdr_buf; |
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u32 *fifo_base; |
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u32 *fifo_ptr; |
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struct ps3vram_cache cache; |
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spinlock_t lock; /* protecting list of bios */ |
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struct bio_list list; |
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}; |
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static int ps3vram_major; |
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#define DMA_NOTIFIER_HANDLE_BASE 0x66604200 /* first DMA notifier handle */ |
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#define DMA_NOTIFIER_OFFSET_BASE 0x1000 /* first DMA notifier offset */ |
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#define DMA_NOTIFIER_SIZE 0x40 |
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#define NOTIFIER 7 /* notifier used for completion report */ |
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static char *size = "256M"; |
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module_param(size, charp, 0); |
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MODULE_PARM_DESC(size, "memory size"); |
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static u32 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier) |
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{ |
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return reports + DMA_NOTIFIER_OFFSET_BASE + |
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DMA_NOTIFIER_SIZE * notifier; |
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} |
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static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); |
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int i; |
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for (i = 0; i < 4; i++) |
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iowrite32be(0xffffffff, notify + i); |
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} |
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static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev, |
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unsigned int timeout_ms) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); |
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unsigned long timeout; |
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for (timeout = 20; timeout; timeout--) { |
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if (!ioread32be(notify + 3)) |
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return 0; |
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udelay(10); |
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} |
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timeout = jiffies + msecs_to_jiffies(timeout_ms); |
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do { |
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if (!ioread32be(notify + 3)) |
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return 0; |
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msleep(1); |
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} while (time_before(jiffies, timeout)); |
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return -ETIMEDOUT; |
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} |
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static void ps3vram_init_ring(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); |
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iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_GET); |
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} |
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static int ps3vram_wait_ring(struct ps3_system_bus_device *dev, |
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unsigned int timeout_ms) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); |
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do { |
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if (ioread32be(priv->ctrl + CTRL_PUT) == ioread32be(priv->ctrl + CTRL_GET)) |
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return 0; |
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msleep(1); |
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} while (time_before(jiffies, timeout)); |
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dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n", |
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ioread32be(priv->ctrl + CTRL_PUT), ioread32be(priv->ctrl + CTRL_GET), |
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ioread32be(priv->ctrl + CTRL_TOP)); |
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return -ETIMEDOUT; |
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} |
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static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data) |
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{ |
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*(priv->fifo_ptr)++ = data; |
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} |
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static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, u32 tag, |
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u32 size) |
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{ |
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ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag); |
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} |
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static void ps3vram_rewind_ring(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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int status; |
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ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET)); |
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iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); |
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/* asking the HV for a blit will kick the FIFO */ |
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status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); |
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if (status) |
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dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n", |
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__func__, status); |
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priv->fifo_ptr = priv->fifo_base; |
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} |
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static void ps3vram_fire_ring(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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int status; |
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mutex_lock(&ps3_gpu_mutex); |
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iowrite32be(FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base) |
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* sizeof(u32), priv->ctrl + CTRL_PUT); |
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/* asking the HV for a blit will kick the FIFO */ |
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status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); |
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if (status) |
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dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n", |
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__func__, status); |
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if ((priv->fifo_ptr - priv->fifo_base) * sizeof(u32) > |
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FIFO_SIZE - 1024) { |
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dev_dbg(&dev->core, "FIFO full, rewinding\n"); |
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ps3vram_wait_ring(dev, 200); |
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ps3vram_rewind_ring(dev); |
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} |
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mutex_unlock(&ps3_gpu_mutex); |
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} |
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static void ps3vram_bind(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0, 1); |
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ps3vram_out_ring(priv, 0x31337303); |
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ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x180, 3); |
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ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); |
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ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ |
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ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ |
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ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0, 1); |
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ps3vram_out_ring(priv, 0x3137c0de); |
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ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x180, 3); |
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ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); |
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ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ |
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ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ |
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ps3vram_fire_ring(dev); |
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} |
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static int ps3vram_upload(struct ps3_system_bus_device *dev, |
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unsigned int src_offset, unsigned int dst_offset, |
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int len, int count) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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ps3vram_begin_ring(priv, UPLOAD_SUBCH, |
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NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); |
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ps3vram_out_ring(priv, XDR_IOIF + src_offset); |
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ps3vram_out_ring(priv, dst_offset); |
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ps3vram_out_ring(priv, len); |
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ps3vram_out_ring(priv, len); |
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ps3vram_out_ring(priv, len); |
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ps3vram_out_ring(priv, count); |
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ps3vram_out_ring(priv, (1 << 8) | 1); |
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ps3vram_out_ring(priv, 0); |
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ps3vram_notifier_reset(dev); |
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ps3vram_begin_ring(priv, UPLOAD_SUBCH, |
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NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); |
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ps3vram_out_ring(priv, 0); |
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ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x100, 1); |
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ps3vram_out_ring(priv, 0); |
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ps3vram_fire_ring(dev); |
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if (ps3vram_notifier_wait(dev, 200) < 0) { |
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dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); |
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return -1; |
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} |
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return 0; |
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} |
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static int ps3vram_download(struct ps3_system_bus_device *dev, |
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unsigned int src_offset, unsigned int dst_offset, |
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int len, int count) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, |
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NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); |
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ps3vram_out_ring(priv, src_offset); |
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ps3vram_out_ring(priv, XDR_IOIF + dst_offset); |
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ps3vram_out_ring(priv, len); |
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ps3vram_out_ring(priv, len); |
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ps3vram_out_ring(priv, len); |
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ps3vram_out_ring(priv, count); |
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ps3vram_out_ring(priv, (1 << 8) | 1); |
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ps3vram_out_ring(priv, 0); |
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ps3vram_notifier_reset(dev); |
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ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, |
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NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); |
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ps3vram_out_ring(priv, 0); |
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ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x100, 1); |
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ps3vram_out_ring(priv, 0); |
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ps3vram_fire_ring(dev); |
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if (ps3vram_notifier_wait(dev, 200) < 0) { |
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dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); |
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return -1; |
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} |
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return 0; |
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} |
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static void ps3vram_cache_evict(struct ps3_system_bus_device *dev, int entry) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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struct ps3vram_cache *cache = &priv->cache; |
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if (!(cache->tags[entry].flags & CACHE_PAGE_DIRTY)) |
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return; |
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dev_dbg(&dev->core, "Flushing %d: 0x%08x\n", entry, |
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cache->tags[entry].address); |
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if (ps3vram_upload(dev, CACHE_OFFSET + entry * cache->page_size, |
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cache->tags[entry].address, DMA_PAGE_SIZE, |
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cache->page_size / DMA_PAGE_SIZE) < 0) { |
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dev_err(&dev->core, |
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"Failed to upload from 0x%x to " "0x%x size 0x%x\n", |
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entry * cache->page_size, cache->tags[entry].address, |
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cache->page_size); |
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} |
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cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY; |
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} |
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static void ps3vram_cache_load(struct ps3_system_bus_device *dev, int entry, |
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unsigned int address) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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struct ps3vram_cache *cache = &priv->cache; |
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dev_dbg(&dev->core, "Fetching %d: 0x%08x\n", entry, address); |
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if (ps3vram_download(dev, address, |
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CACHE_OFFSET + entry * cache->page_size, |
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DMA_PAGE_SIZE, |
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cache->page_size / DMA_PAGE_SIZE) < 0) { |
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dev_err(&dev->core, |
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"Failed to download from 0x%x to 0x%x size 0x%x\n", |
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address, entry * cache->page_size, cache->page_size); |
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} |
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cache->tags[entry].address = address; |
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cache->tags[entry].flags |= CACHE_PAGE_PRESENT; |
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} |
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static void ps3vram_cache_flush(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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struct ps3vram_cache *cache = &priv->cache; |
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int i; |
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dev_dbg(&dev->core, "FLUSH\n"); |
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for (i = 0; i < cache->page_count; i++) { |
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ps3vram_cache_evict(dev, i); |
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cache->tags[i].flags = 0; |
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} |
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} |
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static unsigned int ps3vram_cache_match(struct ps3_system_bus_device *dev, |
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loff_t address) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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struct ps3vram_cache *cache = &priv->cache; |
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unsigned int base; |
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unsigned int offset; |
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int i; |
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static int counter; |
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offset = (unsigned int) (address & (cache->page_size - 1)); |
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base = (unsigned int) (address - offset); |
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/* fully associative check */ |
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for (i = 0; i < cache->page_count; i++) { |
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if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) && |
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cache->tags[i].address == base) { |
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cache->hit++; |
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dev_dbg(&dev->core, "Found entry %d: 0x%08x\n", i, |
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cache->tags[i].address); |
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return i; |
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} |
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} |
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/* choose a random entry */ |
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i = (jiffies + (counter++)) % cache->page_count; |
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dev_dbg(&dev->core, "Using entry %d\n", i); |
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ps3vram_cache_evict(dev, i); |
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ps3vram_cache_load(dev, i, base); |
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cache->miss++; |
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return i; |
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} |
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static int ps3vram_cache_init(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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priv->cache.page_count = CACHE_PAGE_COUNT; |
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priv->cache.page_size = CACHE_PAGE_SIZE; |
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priv->cache.tags = kcalloc(CACHE_PAGE_COUNT, |
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sizeof(struct ps3vram_tag), |
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GFP_KERNEL); |
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if (!priv->cache.tags) |
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return -ENOMEM; |
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dev_info(&dev->core, "Created ram cache: %d entries, %d KiB each\n", |
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CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024); |
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return 0; |
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} |
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static void ps3vram_cache_cleanup(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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ps3vram_cache_flush(dev); |
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kfree(priv->cache.tags); |
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} |
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static blk_status_t ps3vram_read(struct ps3_system_bus_device *dev, loff_t from, |
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size_t len, size_t *retlen, u_char *buf) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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unsigned int cached, count; |
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dev_dbg(&dev->core, "%s: from=0x%08x len=0x%zx\n", __func__, |
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(unsigned int)from, len); |
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if (from >= priv->size) |
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return BLK_STS_IOERR; |
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if (len > priv->size - from) |
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len = priv->size - from; |
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/* Copy from vram to buf */ |
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count = len; |
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while (count) { |
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unsigned int offset, avail; |
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unsigned int entry; |
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offset = (unsigned int) (from & (priv->cache.page_size - 1)); |
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avail = priv->cache.page_size - offset; |
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entry = ps3vram_cache_match(dev, from); |
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cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; |
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dev_dbg(&dev->core, "%s: from=%08x cached=%08x offset=%08x " |
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"avail=%08x count=%08x\n", __func__, |
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(unsigned int)from, cached, offset, avail, count); |
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if (avail > count) |
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avail = count; |
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memcpy(buf, priv->xdr_buf + cached, avail); |
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buf += avail; |
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count -= avail; |
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from += avail; |
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} |
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*retlen = len; |
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return 0; |
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} |
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static blk_status_t ps3vram_write(struct ps3_system_bus_device *dev, loff_t to, |
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size_t len, size_t *retlen, const u_char *buf) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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unsigned int cached, count; |
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if (to >= priv->size) |
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return BLK_STS_IOERR; |
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if (len > priv->size - to) |
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len = priv->size - to; |
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/* Copy from buf to vram */ |
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count = len; |
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while (count) { |
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unsigned int offset, avail; |
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unsigned int entry; |
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offset = (unsigned int) (to & (priv->cache.page_size - 1)); |
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avail = priv->cache.page_size - offset; |
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entry = ps3vram_cache_match(dev, to); |
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cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; |
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dev_dbg(&dev->core, "%s: to=%08x cached=%08x offset=%08x " |
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"avail=%08x count=%08x\n", __func__, (unsigned int)to, |
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cached, offset, avail, count); |
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if (avail > count) |
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avail = count; |
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memcpy(priv->xdr_buf + cached, buf, avail); |
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priv->cache.tags[entry].flags |= CACHE_PAGE_DIRTY; |
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buf += avail; |
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count -= avail; |
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to += avail; |
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} |
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*retlen = len; |
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return 0; |
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} |
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static int ps3vram_proc_show(struct seq_file *m, void *v) |
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{ |
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struct ps3vram_priv *priv = m->private; |
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seq_printf(m, "hit:%u\nmiss:%u\n", priv->cache.hit, priv->cache.miss); |
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return 0; |
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} |
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static void ps3vram_proc_init(struct ps3_system_bus_device *dev) |
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{ |
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struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
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struct proc_dir_entry *pde; |
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pde = proc_create_single_data(DEVICE_NAME, 0444, NULL, |
|
ps3vram_proc_show, priv); |
|
if (!pde) |
|
dev_warn(&dev->core, "failed to create /proc entry\n"); |
|
} |
|
|
|
static struct bio *ps3vram_do_bio(struct ps3_system_bus_device *dev, |
|
struct bio *bio) |
|
{ |
|
struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
|
int write = bio_data_dir(bio) == WRITE; |
|
const char *op = write ? "write" : "read"; |
|
loff_t offset = bio->bi_iter.bi_sector << 9; |
|
blk_status_t error = 0; |
|
struct bio_vec bvec; |
|
struct bvec_iter iter; |
|
struct bio *next; |
|
|
|
bio_for_each_segment(bvec, bio, iter) { |
|
/* 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); |
|
error = BLK_STS_IOERR; |
|
goto out; |
|
} |
|
|
|
offset += len; |
|
} |
|
|
|
dev_dbg(&dev->core, "%s completed\n", op); |
|
|
|
out: |
|
spin_lock_irq(&priv->lock); |
|
bio_list_pop(&priv->list); |
|
next = bio_list_peek(&priv->list); |
|
spin_unlock_irq(&priv->lock); |
|
|
|
bio->bi_status = error; |
|
bio_endio(bio); |
|
return next; |
|
} |
|
|
|
static blk_qc_t ps3vram_submit_bio(struct bio *bio) |
|
{ |
|
struct ps3_system_bus_device *dev = bio->bi_bdev->bd_disk->private_data; |
|
struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
|
int busy; |
|
|
|
dev_dbg(&dev->core, "%s\n", __func__); |
|
|
|
blk_queue_split(&bio); |
|
|
|
spin_lock_irq(&priv->lock); |
|
busy = !bio_list_empty(&priv->list); |
|
bio_list_add(&priv->list, bio); |
|
spin_unlock_irq(&priv->lock); |
|
|
|
if (busy) |
|
return BLK_QC_T_NONE; |
|
|
|
do { |
|
bio = ps3vram_do_bio(dev, bio); |
|
} while (bio); |
|
|
|
return BLK_QC_T_NONE; |
|
} |
|
|
|
static const struct block_device_operations ps3vram_fops = { |
|
.owner = THIS_MODULE, |
|
.submit_bio = ps3vram_submit_bio, |
|
}; |
|
|
|
static int ps3vram_probe(struct ps3_system_bus_device *dev) |
|
{ |
|
struct ps3vram_priv *priv; |
|
int error, status; |
|
struct request_queue *queue; |
|
struct gendisk *gendisk; |
|
u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar, |
|
reports_size, xdr_lpar; |
|
char *rest; |
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
|
if (!priv) { |
|
error = -ENOMEM; |
|
goto fail; |
|
} |
|
|
|
spin_lock_init(&priv->lock); |
|
bio_list_init(&priv->list); |
|
ps3_system_bus_set_drvdata(dev, priv); |
|
|
|
/* 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_free_xdr_buf; |
|
} |
|
|
|
/* 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_close_gpu; |
|
} |
|
|
|
/* 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 */ |
|
xdr_lpar = ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)); |
|
status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, |
|
xdr_lpar, XDR_BUF_SIZE, |
|
CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | |
|
CBE_IOPTE_M); |
|
if (status) { |
|
dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n", |
|
status); |
|
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_context; |
|
} |
|
|
|
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; |
|
} |
|
|
|
error = ps3vram_cache_init(dev); |
|
if (error < 0) { |
|
goto out_unmap_reports; |
|
} |
|
|
|
ps3vram_proc_init(dev); |
|
|
|
queue = blk_alloc_queue(NUMA_NO_NODE); |
|
if (!queue) { |
|
dev_err(&dev->core, "blk_alloc_queue failed\n"); |
|
error = -ENOMEM; |
|
goto out_cache_cleanup; |
|
} |
|
|
|
priv->queue = queue; |
|
blk_queue_max_segments(queue, BLK_MAX_SEGMENTS); |
|
blk_queue_max_segment_size(queue, BLK_MAX_SEGMENT_SIZE); |
|
blk_queue_max_hw_sectors(queue, BLK_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; |
|
strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name)); |
|
set_capacity(gendisk, priv->size >> 9); |
|
|
|
dev_info(&dev->core, "%s: Using %llu MiB of GPU memory\n", |
|
gendisk->disk_name, get_capacity(gendisk) >> 11); |
|
|
|
device_add_disk(&dev->core, gendisk, NULL); |
|
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_context: |
|
lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, xdr_lpar, |
|
XDR_BUF_SIZE, CBE_IOPTE_M); |
|
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); |
|
ps3_system_bus_set_drvdata(dev, NULL); |
|
fail: |
|
return error; |
|
} |
|
|
|
static void ps3vram_remove(struct ps3_system_bus_device *dev) |
|
{ |
|
struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
|
|
|
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); |
|
lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, |
|
ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)), |
|
XDR_BUF_SIZE, CBE_IOPTE_M); |
|
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); |
|
ps3_system_bus_set_drvdata(dev, NULL); |
|
} |
|
|
|
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);
|
|
|