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- Step 3 :
- Welcome to the world of Sony
- I just want to say a hello to Geo (no the one you are thinking) and tell him that
- Remember 2OFive ? Are you making a new dongle, the first commercial one was not enough ? Sony Still keep the dongle plan alive (win money with commercial hacking/piracy) ? SONY MAKE.BELIEVE PIRACY ;)
- Anyway
- Back to the past
- +#define DEVICE_NAME "ps3disk"
- +
- +#define BOUNCE_SIZE (64*1024)
- +
- +#define PS3DISK_MAX_DISKS 16
- +#define PS3DISK_MINORS 16
- +
- +#define KERNEL_SECTOR_SIZE 512
- +
- +
- +#define PS3DISK_NAME "ps3d%c"
- +
- +
- +struct ps3disk_private {
- + spinlock_t lock; /* Request queue spinlock */
- + struct request_queue *queue;
- + struct gendisk *gendisk;
- + unsigned int blocking_factor;
- + struct request *req;
- + u64 raw_capacity;
- + unsigned char model[ATA_ID_PROD_LEN+1];
- +};
- +#define ps3disk_priv(dev) ((dev)->sbd.core.driver_data)
- +
- +
- +#define LV1_STORAGE_SEND_ATA_COMMAND (2)
- +#define LV1_STORAGE_ATA_HDDOUT (0x23)
- +
- +struct lv1_ata_cmnd_block {
- + u16 features;
- + u16 sector_count;
- + u16 LBA_low;
- + u16 LBA_mid;
- + u16 LBA_high;
- + u8 device;
- + u8 command;
- + u32 is_ext;
- + u32 proto;
- + u32 in_out;
- + u32 size;
- + u64 buffer;
- + u32 arglen;
- +};
- +
- +enum lv1_ata_proto {
- + NON_DATA_PROTO = 0,
- + PIO_DATA_IN_PROTO = 1,
- + PIO_DATA_OUT_PROTO = 2,
- + DMA_PROTO = 3
- +};
- +
- +enum lv1_ata_in_out {
- + DIR_WRITE = 0, /* memory -> device */
- + DIR_READ = 1 /* device -> memory */
- +};
- +
- +static int ps3disk_major;
- +
- +
- +static struct block_device_operations ps3disk_fops = {
- + .owner = THIS_MODULE,
- +};
- +
- +
- +static void ps3disk_scatter_gather(struct ps3_storage_device *dev,
- + struct request *req, int gather)
- +{
- + unsigned int sectors = 0, offset = 0;
- + struct bio *bio;
- + sector_t sector;
- + struct bio_vec *bvec;
- + unsigned int i = 0, j;
- + size_t size;
- + void *buf;
- +
- + rq_for_each_bio(bio, req) {
- + sector = bio->bi_sector;
- + dev_dbg(&dev->sbd.core,
- + "%s:%u: bio %u: %u segs %u sectors from %lu\n",
- + __func__, __LINE__, i, bio_segments(bio),
- + bio_sectors(bio), sector);
- + bio_for_each_segment(bvec, bio, j) {
- + size = bio_cur_sectors(bio)*KERNEL_SECTOR_SIZE;
- + buf = __bio_kmap_atomic(bio, j, KM_IRQ0);
- + if (gather)
- + memcpy(dev->bounce_buf+offset, buf, size);
- + else
- + memcpy(buf, dev->bounce_buf+offset, size);
- + offset += size;
- + flush_kernel_dcache_page(bio_iovec_idx(bio, j)->bv_page);
- + __bio_kunmap_atomic(bio, KM_IRQ0);
- + }
- + sectors += bio_sectors(bio);
- + i++;
- + }
- +}
- +
- +static int ps3disk_submit_request_sg(struct ps3_storage_device *dev,
- + struct request *req)
- +{
- + struct ps3disk_private *priv = ps3disk_priv(dev);
- + int write = rq_data_dir(req), res;
- + const char *op = write ? "write" : "read";
- + u64 start_sector, sectors;
- + unsigned int region_id = dev->regions[dev->region_idx].id;
- +
- +#ifdef DEBUG
- + unsigned int n = 0;
- + struct bio *bio;
- + rq_for_each_bio(bio, req)
- + n++;
- + dev_dbg(&dev->sbd.core,
- + "%s:%u: %s req has %u bios for %lu sectors %lu hard sectors\n",
- + __func__, __LINE__, op, n, req->nr_sectors,
- + req->hard_nr_sectors);
- +#endif
- +
- + start_sector = req->sector*priv->blocking_factor;
- + sectors = req->nr_sectors*priv->blocking_factor;
- + dev_dbg(&dev->sbd.core, "%s:%u: %s %lu sectors starting at %lu\n",
- + __func__, __LINE__, op, sectors, start_sector);
- +
- + if (write) {
- + ps3disk_scatter_gather(dev, req, 1);
- +
- + res = lv1_storage_write(dev->sbd.dev_id, region_id,
- + start_sector, sectors, 0,
- + dev->bounce_lpar, &dev->tag);
- + } else {
- + res = lv1_storage_read(dev->sbd.dev_id, region_id,
- + start_sector, sectors, 0,
- + dev->bounce_lpar, &dev->tag);
- + }
- + if (res) {
- + dev_err(&dev->sbd.core, "%s:%u: %s failed %d\n", __func__,
- + __LINE__, op, res);
- + end_request(req, 0);
- + return 0;
- + }
- +
- + priv->req = req;
- + return 1;
- +}
- +
- +static int ps3disk_submit_flush_request(struct ps3_storage_device *dev,
- + struct request *req)
- +{
- + struct ps3disk_private *priv = ps3disk_priv(dev);
- + u64 res;
- +
- + dev_dbg(&dev->sbd.core, "%s:%u: flush request\n", __func__, __LINE__);
- +
- + res = lv1_storage_send_device_command(dev->sbd.dev_id,
- + LV1_STORAGE_ATA_HDDOUT, 0, 0, 0,
- + 0, &dev->tag);
- + if (res) {
- + dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%lx\n",
- + __func__, __LINE__, res);
- + end_request(req, 0);
- + return 0;
- + }
- +
- + priv->req = req;
- + return 1;
- +}
- +
- +static void ps3disk_do_request(struct ps3_storage_device *dev,
- + request_queue_t *q)
- +{
- + struct request *req;
- +
- + dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
- +
- + while ((req = elv_next_request(q))) {
- + if (blk_fs_request(req)) {
- + if (ps3disk_submit_request_sg(dev, req))
- + break;
- + } else if (req->cmd_type == REQ_TYPE_FLUSH) {
- + if (ps3disk_submit_flush_request(dev, req))
- + break;
- + } else {
- + blk_dump_rq_flags(req, DEVICE_NAME " bad request");
- + end_request(req, 0);
- + continue;
- + }
- + }
- +}
- +
- +static void ps3disk_request(request_queue_t *q)
- +{
- + struct ps3_storage_device *dev = q->queuedata;
- + struct ps3disk_private *priv = ps3disk_priv(dev);
- +
- + if (priv->req) {
- + dev_dbg(&dev->sbd.core, "%s:%u busy\n", __func__, __LINE__);
- + return;
- + }
- +
- + ps3disk_do_request(dev, q);
- +}
- +
- +static irqreturn_t ps3disk_interrupt(int irq, void *data)
- +{
- + struct ps3_storage_device *dev = data;
- + struct ps3disk_private *priv;
- + struct request *req;
- + int res, read, uptodate;
- + u64 tag, status;
- + unsigned long num_sectors;
- + const char *op;
- +
- + res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status);
- +
- + if (tag != dev->tag)
- + dev_err(&dev->sbd.core,
- + "%s:%u: tag mismatch, got %lx, expected %lx\n",
- + __func__, __LINE__, tag, dev->tag);
- +
- + if (res) {
- + dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%lx\n",
- + __func__, __LINE__, res, status);
- + return IRQ_HANDLED;
- + }
- +
- + priv = ps3disk_priv(dev);
- + req = priv->req;
- + if (!req) {
- + dev_dbg(&dev->sbd.core,
- + "%s:%u non-block layer request completed\n", __func__,
- + __LINE__);
- + dev->lv1_status = status;
- + complete(&dev->done);
- + return IRQ_HANDLED;
- + }
- +
- + if (req->cmd_type == REQ_TYPE_FLUSH) {
- + read = 0;
- + num_sectors = req->hard_cur_sectors;
- + op = "flush";
- + } else {
- + read = !rq_data_dir(req);
- + num_sectors = req->nr_sectors;
- + op = read ? "read" : "write";
- + }
- + if (status) {
- + dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%lx\n", __func__,
- + __LINE__, op, status);
- + uptodate = 0;
- + } else {
- + dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__,
- + __LINE__, op);
- + uptodate = 1;
- + if (read)
- + ps3disk_scatter_gather(dev, req, 0);
- + }
- +
- + spin_lock(&priv->lock);
- + if (!end_that_request_first(req, uptodate, num_sectors)) {
- + add_disk_randomness(req->rq_disk);
- + blkdev_dequeue_request(req);
- + end_that_request_last(req, uptodate);
- + }
- + priv->req = NULL;
- + ps3disk_do_request(dev, priv->queue);
- + spin_unlock(&priv->lock);
- +
- + return IRQ_HANDLED;
- +}
- +
- +static int ps3disk_sync_cache(struct ps3_storage_device *dev)
- +{
- + u64 res;
- +
- + dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__);
- +
- + res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0);
- + if (res) {
- + dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%lx\n",
- + __func__, __LINE__, res);
- + return -EIO;
- + }
- + return 0;
- +}
- +
- +
- +/* ATA helpers copied from drivers/ata/libata-core.c */
- +
- +static void swap_buf_le16(u16 *buf, unsigned int buf_words)
- +{
- +#ifdef __BIG_ENDIAN
- + unsigned int i;
- +
- + for (i = 0; i < buf_words; i++)
- + buf[i] = le16_to_cpu(buf[i]);
- +#endif /* __BIG_ENDIAN */
- +}
- +
- +static u64 ata_id_n_sectors(const u16 *id)
- +{
- + if (ata_id_has_lba(id)) {
- + if (ata_id_has_lba48(id))
- + return ata_id_u64(id, 100);
- + else
- + return ata_id_u32(id, 60);
- + } else {
- + if (ata_id_current_chs_valid(id))
- + return ata_id_u32(id, 57);
- + else
- + return id[1] * id[3] * id[6];
- + }
- +}
- +
- +static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs,
- + unsigned int len)
- +{
- + unsigned int c;
- +
- + while (len > 0) {
- + c = id[ofs] >> 8;
- + *s = c;
- + s++;
- +
- + c = id[ofs] & 0xff;
- + *s = c;
- + s++;
- +
- + ofs++;
- + len -= 2;
- + }
- +}
- +
- +static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs,
- + unsigned int len)
- +{
- + unsigned char *p;
- +
- + WARN_ON(!(len & 1));
- +
- + ata_id_string(id, s, ofs, len - 1);
- +
- + p = s + strnlen(s, len - 1);
- + while (p > s && p[-1] == ' ')
- + p--;
- + *p = '\0';
- +}
- +
- +static int ps3disk_identify(struct ps3_storage_device *dev)
- +{
- + struct ps3disk_private *priv = ps3disk_priv(dev);
- + struct lv1_ata_cmnd_block ata_cmnd;
- + u16 *id = dev->bounce_buf;
- + u64 res;
- +
- + dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__);
- +
- + memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block));
- + ata_cmnd.command = ATA_CMD_ID_ATA;
- + ata_cmnd.sector_count = 1;
- + ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2;
- + ata_cmnd.buffer = dev->bounce_lpar;
- + ata_cmnd.proto = PIO_DATA_IN_PROTO;
- + ata_cmnd.in_out = DIR_READ;
- +
- + res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND,
- + ps3_mm_phys_to_lpar(__pa(&ata_cmnd)),
- + sizeof(ata_cmnd), ata_cmnd.buffer,
- + ata_cmnd.arglen);
- + if (res) {
- + dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%lx\n",
- + __func__, __LINE__, res);
- + return -EIO;
- + }
- +
- + swap_buf_le16(id, ATA_ID_WORDS);
- +
- + /* All we're interested in are raw capacity and model name */
- + priv->raw_capacity = ata_id_n_sectors(id);
- + ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model));
- + return 0;
- +}
- +
- +static void ps3disk_prepare_flush(request_queue_t *q, struct request *req)
- +{
- + struct ps3_storage_device *dev = q->queuedata;
- +
- + dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
- +
- + memset(req->cmd, 0, sizeof(req->cmd));
- + req->cmd_type = REQ_TYPE_FLUSH;
- +}
- +
- +static int ps3disk_issue_flush(request_queue_t *q, struct gendisk *gendisk,
- + sector_t *sector)
- +{
- + struct ps3_storage_device *dev = q->queuedata;
- + struct request *req;
- + int res;
- +
- + dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
- +
- + req = blk_get_request(q, WRITE, __GFP_WAIT);
- + ps3disk_prepare_flush(q, req);
- + res = blk_execute_rq(q, gendisk, req, 0);
- + if (res)
- + dev_err(&dev->sbd.core, "%s:%u: flush request failed %d\n",
- + __func__, __LINE__, res);
- + blk_put_request(req);
- + return res;
- +}
- +
- +
- +static unsigned long ps3disk_mask;
- +
- +static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev)
- +{
- + struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
- + struct ps3disk_private *priv;
- + int error;
- + unsigned int devidx;
- + struct request_queue *queue;
- + struct gendisk *gendisk;
- +
- + if (dev->blk_size < KERNEL_SECTOR_SIZE) {
- + dev_err(&dev->sbd.core,
- + "%s:%u: cannot handle block size %lu\n", __func__,
- + __LINE__, dev->blk_size);
- + return -EINVAL;
- + }
- +
- + BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG);
- + devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS);
- + if (devidx >= PS3DISK_MAX_DISKS) {
- + dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__,
- + __LINE__);
- + return -ENOSPC;
- + }
- + __set_bit(devidx, &ps3disk_mask);
- +
- + priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- + if (!priv) {
- + error = -ENOMEM;
- + goto fail;
- + }
- +
- + ps3disk_priv(dev) = priv;
- + spin_lock_init(&priv->lock);
- +
- + dev->bounce_size = BOUNCE_SIZE;
- + dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA);
- + if (!dev->bounce_buf) {
- + error = -ENOMEM;
- + goto fail_free_priv;
- + }
- +
- + error = ps3stor_setup(dev, ps3disk_interrupt);
- + if (error)
- + goto fail_free_bounce;
- +
- + ps3disk_identify(dev);
- +
- + queue = blk_init_queue(ps3disk_request, &priv->lock);
- + if (!queue) {
- + dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n",
- + __func__, __LINE__);
- + error = -ENOMEM;
- + goto fail_teardown;
- + }
- +
- + priv->queue = queue;
- + queue->queuedata = dev;
- +
- + blk_queue_bounce_limit(queue, BLK_BOUNCE_HIGH);
- +
- + blk_queue_max_sectors(queue, dev->bounce_size/KERNEL_SECTOR_SIZE);
- + blk_queue_segment_boundary(queue, -1UL);
- + blk_queue_dma_alignment(queue, dev->blk_size-1);
- + blk_queue_hardsect_size(queue, dev->blk_size);
- +
- + blk_queue_issue_flush_fn(queue, ps3disk_issue_flush);
- + blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH,
- + ps3disk_prepare_flush);
- +
- + blk_queue_max_phys_segments(queue, -1);
- + blk_queue_max_hw_segments(queue, -1);
- + blk_queue_max_segment_size(queue, dev->bounce_size);
- +
- + gendisk = alloc_disk(PS3DISK_MINORS);
- + if (!gendisk) {
- + dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__,
- + __LINE__);
- + error = -ENOMEM;
- + goto fail_cleanup_queue;
- + }
- +
- + priv->gendisk = gendisk;
- + gendisk->major = ps3disk_major;
- + gendisk->first_minor = devidx * PS3DISK_MINORS;
- + gendisk->fops = &ps3disk_fops;
- + gendisk->queue = queue;
- + gendisk->private_data = dev;
- + gendisk->driverfs_dev = &dev->sbd.core;
- + snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME,
- + devidx+'a');
- + priv->blocking_factor = dev->blk_size/KERNEL_SECTOR_SIZE;
- + set_capacity(gendisk,
- + dev->regions[dev->region_idx].size*priv->blocking_factor);
- +
- + dev_info(&dev->sbd.core,
- + "%s is a %s (%lu MiB total, %lu MiB for OtherOS)\n",
- + gendisk->disk_name, priv->model, priv->raw_capacity >> 11,
- + get_capacity(gendisk) >> 11);
- +
- + add_disk(gendisk);
- + return 0;
- +
- +fail_cleanup_queue:
- + blk_cleanup_queue(queue);
- +fail_teardown:
- + ps3stor_teardown(dev);
- +fail_free_bounce:
- + kfree(dev->bounce_buf);
- +fail_free_priv:
- + kfree(priv);
- + ps3disk_priv(dev) = NULL;
- +fail:
- + __clear_bit(devidx, &ps3disk_mask);
- + return error;
- +}
- +
- +static int ps3disk_remove(struct ps3_system_bus_device *_dev)
- +{
- + struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
- + struct ps3disk_private *priv = ps3disk_priv(dev);
- +
- + __clear_bit(priv->gendisk->first_minor / PS3DISK_MINORS,
- + &ps3disk_mask);
- + del_gendisk(priv->gendisk);
- + blk_cleanup_queue(priv->queue);
- + put_disk(priv->gendisk);
- + dev_notice(&dev->sbd.core, "Synchronizing disk cache\n");
- + ps3disk_sync_cache(dev);
- + ps3stor_teardown(dev);
- + kfree(dev->bounce_buf);
- + kfree(priv);
- + ps3disk_priv(dev) = NULL;
- + return 0;
- +}
- +
- +static struct ps3_system_bus_driver ps3disk = {
- + .match_id = PS3_MATCH_ID_STOR_DISK,
- + .core.name = DEVICE_NAME,
- + .core.owner = THIS_MODULE,
- + .probe = ps3disk_probe,
- + .remove = ps3disk_remove,
- + .shutdown = ps3disk_remove,
- +};
- +
- +
- +static int __init ps3disk_init(void)
- +{
- + int error;
- +
- + if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
- + return -ENODEV;
- +
- + error = register_blkdev(0, DEVICE_NAME);
- + if (error <= 0) {
- + printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__,
- + __LINE__, error);
- + return error;
- + }
- + ps3disk_major = error;
- +
- + pr_info("%s:%u: registered block device major %d\n", __func__,
- + __LINE__, ps3disk_major);
- +
- + error = ps3_system_bus_driver_register(&ps3disk);
- + if (error)
- + unregister_blkdev(ps3disk_major, DEVICE_NAME);
- +
- + return error;
- +}
- +
- +static void __exit ps3disk_exit(void)
- +{
- + ps3_system_bus_driver_unregister(&ps3disk);
- + unregister_blkdev(ps3disk_major, DEVICE_NAME);
- +}
- +
- +module_init(ps3disk_init);
- +module_exit(ps3disk_exit);
- +
- +MODULE_LICENSE("GPL");
- +MODULE_DESCRIPTION("PS3 Disk Storage Driver");
- +MODULE_AUTHOR("Sony Corporation");
- +MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK);
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