/* * ps3vram - Use extra PS3 video ram as MTD block device. * * Copyright 2009 Sony Corporation * * Based on the MTD ps3vram driver, which is * Copyright (c) 2007-2008 Jim Paris * Added support RSX DMA Vivien Chappelier */ #include #include #include #include #include #include #include #include #include #include #define DEVICE_NAME "ps3vram" #define XDR_BUF_SIZE (2 * 1024 * 1024) /* XDR buffer (must be 1MiB aligned) */ #define XDR_IOIF 0x0c000000 #define FIFO_BASE XDR_IOIF #define FIFO_SIZE (64 * 1024) #define DMA_PAGE_SIZE (4 * 1024) #define CACHE_PAGE_SIZE (256 * 1024) #define CACHE_PAGE_COUNT ((XDR_BUF_SIZE - FIFO_SIZE) / CACHE_PAGE_SIZE) #define CACHE_OFFSET CACHE_PAGE_SIZE #define FIFO_OFFSET 0 #define CTRL_PUT 0x10 #define CTRL_GET 0x11 #define CTRL_TOP 0x15 #define UPLOAD_SUBCH 1 #define DOWNLOAD_SUBCH 2 #define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104 #define 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 *ctrl; void *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 *ps3vram_get_notifier(void *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 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); int i; for (i = 0; i < 4; i++) notify[i] = 0xffffffff; } 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 *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); unsigned long timeout; for (timeout = 20; timeout; timeout--) { if (!notify[3]) return 0; udelay(10); } timeout = jiffies + msecs_to_jiffies(timeout_ms); do { if (!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); priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; priv->ctrl[CTRL_GET] = FIFO_BASE + FIFO_OFFSET; } 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 (priv->ctrl[CTRL_PUT] == priv->ctrl[CTRL_GET]) return 0; msleep(1); } while (time_before(jiffies, timeout)); dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n", priv->ctrl[CTRL_PUT], priv->ctrl[CTRL_GET], 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)); priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET; /* 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); priv->ctrl[CTRL_PUT] = FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base) * sizeof(u32); /* 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(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; } 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 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; } 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; } 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; } static int ps3vram_proc_open(struct inode *inode, struct file *file) { return single_open(file, ps3vram_proc_show, PDE(inode)->data); } 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 __devinit 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"); } 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_sector << 9; int error = 0; struct bio_vec *bvec; unsigned int i; struct bio *next; bio_for_each_segment(bvec, bio, i) { /* 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_endio(bio, error); return next; } static int 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__); 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 0; do { bio = ps3vram_do_bio(dev, bio); } while (bio); return 0; } static int __devinit 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; } 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; } 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);