cregit-Linux how code gets into the kernel

Release 4.7 drivers/block/ps3vram.c

Directory: drivers/block
/*
 * 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 request_queue *queue;
	
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;



static const struct block_device_operations ps3vram_fops = {
	.owner		= THIS_MODULE,
};



#define DMA_NOTIFIER_HANDLE_BASE 0x66604200 
/* first DMA notifier handle */

#define DMA_NOTIFIER_OFFSET_BASE 0x1000     
/* first DMA notifier offset */

#define DMA_NOTIFIER_SIZE        0x40

#define NOTIFIER 7	
/* notifier used for completion report */


static char *size = "256M";
module_param(size, charp, 0);
MODULE_PARM_DESC(size, "memory size");


static u32 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier) { return reports + DMA_NOTIFIER_OFFSET_BASE + DMA_NOTIFIER_SIZE * notifier; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris2184.00%125.00%
geoff levandgeoff levand28.00%125.00%
geert uytterhoevengeert uytterhoeven14.00%125.00%
geoffrey levandgeoffrey levand14.00%125.00%
Total25100.00%4100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris4371.67%116.67%
geoff levandgeoff levand711.67%116.67%
geert uytterhoevengeert uytterhoeven711.67%233.33%
roel kluinroel kluin23.33%116.67%
geoffrey levandgeoffrey levand11.67%116.67%
Total60100.00%6100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris5344.92%112.50%
hideyuki sasakihideyuki sasaki3126.27%112.50%
geoffrey levandgeoffrey levand1916.10%225.00%
geoff levandgeoff levand97.63%112.50%
geert uytterhoevengeert uytterhoeven43.39%225.00%
roel kluinroel kluin21.69%112.50%
Total118100.00%8100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris2757.45%120.00%
geoff levandgeoff levand1429.79%120.00%
geert uytterhoevengeert uytterhoeven48.51%240.00%
roel kluinroel kluin24.26%120.00%
Total47100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris6151.69%114.29%
geoffrey levandgeoffrey levand2622.03%228.57%
geoff levandgeoff levand2016.95%114.29%
geert uytterhoevengeert uytterhoeven97.63%228.57%
roel kluinroel kluin21.69%114.29%
Total118100.00%7100.00%


static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data) { *(priv->fifo_ptr)++ = data; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris2395.83%150.00%
geoffrey levandgeoffrey levand14.17%150.00%
Total24100.00%2100.00%


static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, u32 tag, u32 size) { ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag); }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris3692.31%150.00%
geoffrey levandgeoffrey levand37.69%150.00%
Total39100.00%2100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris6670.21%114.29%
geert uytterhoevengeert uytterhoeven1212.77%342.86%
geoff levandgeoff levand88.51%114.29%
geoffrey levandgeoffrey levand66.38%114.29%
roel kluinroel kluin22.13%114.29%
Total94100.00%7100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris10572.41%112.50%
geert uytterhoevengeert uytterhoeven1812.41%337.50%
geoffrey levandgeoffrey levand117.59%225.00%
geoff levandgeoff levand96.21%112.50%
roel kluinroel kluin21.38%112.50%
Total145100.00%8100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris12794.78%125.00%
geert uytterhoevengeert uytterhoeven53.73%250.00%
roel kluinroel kluin21.49%125.00%
Total134100.00%4100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris17090.43%120.00%
geert uytterhoevengeert uytterhoeven126.38%240.00%
geoffrey levandgeoffrey levand42.13%120.00%
roel kluinroel kluin21.06%120.00%
Total188100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris17090.43%120.00%
geert uytterhoevengeert uytterhoeven126.38%240.00%
geoffrey levandgeoffrey levand42.13%120.00%
roel kluinroel kluin21.06%120.00%
Total188100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris12482.67%120.00%
geert uytterhoevengeert uytterhoeven1912.67%240.00%
geoffrey levandgeoffrey levand53.33%120.00%
roel kluinroel kluin21.33%120.00%
Total150100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris10483.20%120.00%
geert uytterhoevengeert uytterhoeven1310.40%240.00%
geoffrey levandgeoffrey levand64.80%120.00%
roel kluinroel kluin21.60%120.00%
Total125100.00%5100.00%


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; } }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris6582.28%120.00%
geert uytterhoevengeert uytterhoeven911.39%240.00%
geoffrey levandgeoffrey levand33.80%120.00%
roel kluinroel kluin22.53%120.00%
Total79100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris17584.54%120.00%
geert uytterhoevengeert uytterhoeven2411.59%240.00%
geoffrey levandgeoffrey levand62.90%120.00%
roel kluinroel kluin20.97%120.00%
Total207100.00%5100.00%


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(sizeof(struct ps3vram_tag) * CACHE_PAGE_COUNT, GFP_KERNEL); if (priv->cache.tags == NULL) { dev_err(&dev->core, "Could not allocate cache tags\n"); return -ENOMEM; } dev_info(&dev->core, "Created ram cache: %d entries, %d KiB each\n", CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris7271.29%120.00%
geoffrey levandgeoffrey levand1514.85%120.00%
geert uytterhoevengeert uytterhoeven1211.88%240.00%
roel kluinroel kluin21.98%120.00%
Total101100.00%5100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris2880.00%125.00%
geert uytterhoevengeert uytterhoeven514.29%250.00%
roel kluinroel kluin25.71%125.00%
Total35100.00%4100.00%


static int ps3vram_read(struct ps3_system_bus_device *dev, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct ps3vram_priv *priv = 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 -EIO; if (len > priv->size - from) len = priv->size - from; /* Copy from vram to buf */ count = len; while (count) { unsigned int offset, avail; unsigned int entry; offset = (unsigned int) (from & (priv->cache.page_size - 1)); avail = priv->cache.page_size - offset; 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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris20285.96%120.00%
geert uytterhoevengeert uytterhoeven177.23%240.00%
geoffrey levandgeoffrey levand145.96%120.00%
roel kluinroel kluin20.85%120.00%
Total235100.00%5100.00%


static int ps3vram_write(struct ps3_system_bus_device *dev, loff_t to, size_t len, size_t *retlen, const u_char *buf) { struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); unsigned int cached, count; if (to >= priv->size) return -EIO; if (len > priv->size - to) len = priv->size - to; /* Copy from buf to vram */ count = len; while (count) { unsigned int offset, avail; unsigned int entry; offset = (unsigned int) (to & (priv->cache.page_size - 1)); avail = priv->cache.page_size - offset; 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; count -= avail; to += avail; } *retlen = len; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris20689.96%120.00%
geert uytterhoevengeert uytterhoeven135.68%240.00%
geoffrey levandgeoffrey levand83.49%120.00%
roel kluinroel kluin20.87%120.00%
Total229100.00%5100.00%


static int ps3vram_proc_show(struct seq_file *m, void *v) { struct ps3vram_priv *priv = m->private; seq_printf(m, "hit:%u\nmiss:%u\n", priv->cache.hit, priv->cache.miss); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
geert uytterhoevengeert uytterhoeven2554.35%150.00%
jim parisjim paris2145.65%150.00%
Total46100.00%2100.00%


static int ps3vram_proc_open(struct inode *inode, struct file *file) { return single_open(file, ps3vram_proc_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
geert uytterhoevengeert uytterhoeven2896.55%150.00%
al viroal viro13.45%150.00%
Total29100.00%2100.00%

static const struct file_operations ps3vram_proc_fops = { .owner = THIS_MODULE, .open = ps3vram_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, };
static void ps3vram_proc_init(struct ps3_system_bus_device *dev) { struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); struct proc_dir_entry *pde; pde = proc_create_data(DEVICE_NAME, 0444, NULL, &ps3vram_proc_fops, priv); if (!pde) dev_warn(&dev->core, "failed to create /proc entry\n"); }

Contributors

PersonTokensPropCommitsCommitProp
geert uytterhoevengeert uytterhoeven5596.49%375.00%
roel kluinroel kluin23.51%125.00%
Total57100.00%4100.00%


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; int 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 = -EIO; 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_error = error; bio_endio(bio); return next; }

Contributors

PersonTokensPropCommitsCommitProp
geert uytterhoevengeert uytterhoeven25992.17%444.44%
kent overstreetkent overstreet93.20%222.22%
christoph hellwigchristoph hellwig62.14%111.11%
geoffrey levandgeoffrey levand51.78%111.11%
roel kluinroel kluin20.71%111.11%
Total281100.00%9100.00%


static blk_qc_t ps3vram_make_request(struct request_queue *q, struct bio *bio) { struct ps3_system_bus_device *dev = q->queuedata; struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); int busy; dev_dbg(&dev->core, "%s\n", __func__); blk_queue_split(q, &bio, q->bio_split); 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; }

Contributors

PersonTokensPropCommitsCommitProp
geert uytterhoevengeert uytterhoeven10583.33%350.00%
kent overstreetkent overstreet129.52%116.67%
jens axboejens axboe75.56%116.67%
roel kluinroel kluin21.59%116.67%
Total126100.00%6100.00%


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; } ps3vram_cache_init(dev); ps3vram_proc_init(dev); queue = blk_alloc_queue(GFP_KERNEL); if (!queue) { dev_err(&dev->core, "blk_alloc_queue failed\n"); error = -ENOMEM; goto out_cache_cleanup; } priv->queue = queue; queue->queuedata = dev; blk_queue_make_request(queue, ps3vram_make_request); blk_queue_max_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; gendisk->driverfs_dev = &dev->core; strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name)); set_capacity(gendisk, priv->size >> 9); dev_info(&dev->core, "%s: Using %lu MiB of GPU memory\n", gendisk->disk_name, get_capacity(gendisk) >> 11); add_disk(gendisk); return 0; fail_cleanup_queue: blk_cleanup_queue(queue); out_cache_cleanup: remove_proc_entry(DEVICE_NAME, NULL); ps3vram_cache_cleanup(dev); out_unmap_reports: iounmap(priv->reports); out_unmap_ctrl: iounmap(priv->ctrl); out_unmap_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; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris47651.74%214.29%
geert uytterhoevengeert uytterhoeven35939.02%535.71%
geoffrey levandgeoffrey levand748.04%214.29%
roel kluinroel kluin60.65%17.14%
martin k. petersenmartin k. petersen40.43%321.43%
stephen rothwellstephen rothwell10.11%17.14%
Total920100.00%14100.00%


static int 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); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris8258.16%120.00%
geert uytterhoevengeert uytterhoeven5438.30%360.00%
roel kluinroel kluin53.55%120.00%
Total141100.00%5100.00%

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; }

Contributors

PersonTokensPropCommitsCommitProp
geert uytterhoevengeert uytterhoeven7382.95%150.00%
jim parisjim paris1517.05%150.00%
Total88100.00%2100.00%


static void __exit ps3vram_exit(void) { ps3_system_bus_driver_unregister(&ps3vram); unregister_blkdev(ps3vram_major, DEVICE_NAME); }

Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris1463.64%150.00%
geert uytterhoevengeert uytterhoeven836.36%150.00%
Total22100.00%2100.00%

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);

Overall Contributors

PersonTokensPropCommitsCommitProp
jim parisjim paris274461.98%26.06%
geert uytterhoevengeert uytterhoeven126528.57%1236.36%
geoffrey levandgeoffrey levand2184.92%39.09%
geoff levandgeoff levand711.60%13.03%
roel kluinroel kluin511.15%13.03%
hideyuki sasakihideyuki sasaki310.70%13.03%
kent overstreetkent overstreet210.47%39.09%
jens axboejens axboe70.16%13.03%
christoph hellwigchristoph hellwig60.14%13.03%
martin k. petersenmartin k. petersen40.09%39.09%
paul gortmakerpaul gortmaker30.07%13.03%
tejun heotejun heo30.07%13.03%
al viroal viro10.02%13.03%
stephen rothwellstephen rothwell10.02%13.03%
alexey dobriyanalexey dobriyan10.02%13.03%
Total4427100.00%33100.00%
Directory: drivers/block
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
{% endraw %}