mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-25 18:30:06 +00:00
![Emmanuel Nicolet](/assets/img/avatar_default.png)
Since commitdcebd75592
("block: use bio_for_each_bvec() to compute multi-page bvec count"), the kernel will bug_on on the PS3 because bio_split() is called with sectors == 0: kernel BUG at block/bio.c:1853! Oops: Exception in kernel mode, sig: 5 [#1] BE PAGE_SIZE=4K MMU=Hash PREEMPT SMP NR_CPUS=8 NUMA PS3 Modules linked in: firewire_sbp2 rtc_ps3(+) soundcore ps3_gelic(+) \ ps3rom(+) firewire_core ps3vram(+) usb_common crc_itu_t CPU: 0 PID: 97 Comm: blkid Not tainted 5.3.0-rc4 #1 NIP: c00000000027d0d0 LR: c00000000027d0b0 CTR: 0000000000000000 REGS: c00000000135ae90 TRAP: 0700 Not tainted (5.3.0-rc4) MSR: 8000000000028032 <SF,EE,IR,DR,RI> CR: 44008240 XER: 20000000 IRQMASK: 0 GPR00: c000000000289368 c00000000135b120 c00000000084a500 c000000004ff8300 GPR04: 0000000000000c00 c000000004c905e0 c000000004c905e0 000000000000ffff GPR08: 0000000000000000 0000000000000001 0000000000000000 000000000000ffff GPR12: 0000000000000000 c0000000008ef000 000000000000003e 0000000000080001 GPR16: 0000000000000100 000000000000ffff 0000000000000000 0000000000000004 GPR20: c00000000062fd7e 0000000000000001 000000000000ffff 0000000000000080 GPR24: c000000000781788 c00000000135b350 0000000000000080 c000000004c905e0 GPR28: c00000000135b348 c000000004ff8300 0000000000000000 c000000004c90000 NIP [c00000000027d0d0] .bio_split+0x28/0xac LR [c00000000027d0b0] .bio_split+0x8/0xac Call Trace: [c00000000135b120] [c00000000027d130] .bio_split+0x88/0xac (unreliable) [c00000000135b1b0] [c000000000289368] .__blk_queue_split+0x11c/0x53c [c00000000135b2d0] [c00000000028f614] .blk_mq_make_request+0x80/0x7d4 [c00000000135b3d0] [c000000000283a8c] .generic_make_request+0x118/0x294 [c00000000135b4b0] [c000000000283d34] .submit_bio+0x12c/0x174 [c00000000135b580] [c000000000205a44] .mpage_bio_submit+0x3c/0x4c [c00000000135b600] [c000000000206184] .mpage_readpages+0xa4/0x184 [c00000000135b750] [c0000000001ff8fc] .blkdev_readpages+0x24/0x38 [c00000000135b7c0] [c0000000001589f0] .read_pages+0x6c/0x1a8 [c00000000135b8b0] [c000000000158c74] .__do_page_cache_readahead+0x118/0x184 [c00000000135b9b0] [c0000000001591a8] .force_page_cache_readahead+0xe4/0xe8 [c00000000135ba50] [c00000000014fc24] .generic_file_read_iter+0x1d8/0x830 [c00000000135bb50] [c0000000001ffadc] .blkdev_read_iter+0x40/0x5c [c00000000135bbc0] [c0000000001b9e00] .new_sync_read+0x144/0x1a0 [c00000000135bcd0] [c0000000001bc454] .vfs_read+0xa0/0x124 [c00000000135bd70] [c0000000001bc7a4] .ksys_read+0x70/0xd8 [c00000000135be20] [c00000000000a524] system_call+0x5c/0x70 Instruction dump: 7fe3fb78 482e30dc 7c0802a6 482e3085 7c9e2378 f821ff71 7ca42b78 7d3e00d0 7c7d1b7879290fe0
7cc53378 69290001 <0b090000> 81230028 7bca0020 7929ba62 [ end trace 313fec760f30aa1f ]--- The problem originates from setting the segment boundary of the request queue to -1UL. This makes get_max_segment_size() return zero when offset is zero, whatever the max segment size. The test with BLK_SEG_BOUNDARY_MASK fails and 'mask - (mask & offset) + 1' overflows to zero in the return statement. Not setting the segment boundary and using the default value (BLK_SEG_BOUNDARY_MASK) fixes the problem. Signed-off-by: Emmanuel Nicolet <emmanuel.nicolet@gmail.com> Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/060a416c43138f45105c0540eff1a45539f7e2fc.1589049250.git.geoff@infradead.org
579 lines
14 KiB
C
579 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* PS3 Disk Storage Driver
|
|
*
|
|
* Copyright (C) 2007 Sony Computer Entertainment Inc.
|
|
* Copyright 2007 Sony Corp.
|
|
*/
|
|
|
|
#include <linux/ata.h>
|
|
#include <linux/blk-mq.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <asm/lv1call.h>
|
|
#include <asm/ps3stor.h>
|
|
#include <asm/firmware.h>
|
|
|
|
|
|
#define DEVICE_NAME "ps3disk"
|
|
|
|
#define BOUNCE_SIZE (64*1024)
|
|
|
|
#define PS3DISK_MAX_DISKS 16
|
|
#define PS3DISK_MINORS 16
|
|
|
|
|
|
#define PS3DISK_NAME "ps3d%c"
|
|
|
|
|
|
struct ps3disk_private {
|
|
spinlock_t lock; /* Request queue spinlock */
|
|
struct request_queue *queue;
|
|
struct blk_mq_tag_set tag_set;
|
|
struct gendisk *gendisk;
|
|
unsigned int blocking_factor;
|
|
struct request *req;
|
|
u64 raw_capacity;
|
|
unsigned char model[ATA_ID_PROD_LEN+1];
|
|
};
|
|
|
|
|
|
#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 const 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 offset = 0;
|
|
struct req_iterator iter;
|
|
struct bio_vec bvec;
|
|
unsigned int i = 0;
|
|
size_t size;
|
|
void *buf;
|
|
|
|
rq_for_each_segment(bvec, req, iter) {
|
|
unsigned long flags;
|
|
dev_dbg(&dev->sbd.core, "%s:%u: bio %u: %u sectors from %llu\n",
|
|
__func__, __LINE__, i, bio_sectors(iter.bio),
|
|
iter.bio->bi_iter.bi_sector);
|
|
|
|
size = bvec.bv_len;
|
|
buf = bvec_kmap_irq(&bvec, &flags);
|
|
if (gather)
|
|
memcpy(dev->bounce_buf+offset, buf, size);
|
|
else
|
|
memcpy(buf, dev->bounce_buf+offset, size);
|
|
offset += size;
|
|
flush_kernel_dcache_page(bvec.bv_page);
|
|
bvec_kunmap_irq(buf, &flags);
|
|
i++;
|
|
}
|
|
}
|
|
|
|
static blk_status_t ps3disk_submit_request_sg(struct ps3_storage_device *dev,
|
|
struct request *req)
|
|
{
|
|
struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
|
|
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_vec bv;
|
|
struct req_iterator iter;
|
|
|
|
rq_for_each_segment(bv, req, iter)
|
|
n++;
|
|
dev_dbg(&dev->sbd.core,
|
|
"%s:%u: %s req has %u bvecs for %u sectors\n",
|
|
__func__, __LINE__, op, n, blk_rq_sectors(req));
|
|
#endif
|
|
|
|
start_sector = blk_rq_pos(req) * priv->blocking_factor;
|
|
sectors = blk_rq_sectors(req) * priv->blocking_factor;
|
|
dev_dbg(&dev->sbd.core, "%s:%u: %s %llu sectors starting at %llu\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);
|
|
return BLK_STS_IOERR;
|
|
}
|
|
|
|
priv->req = req;
|
|
return BLK_STS_OK;
|
|
}
|
|
|
|
static blk_status_t ps3disk_submit_flush_request(struct ps3_storage_device *dev,
|
|
struct request *req)
|
|
{
|
|
struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
|
|
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%llx\n",
|
|
__func__, __LINE__, res);
|
|
return BLK_STS_IOERR;
|
|
}
|
|
|
|
priv->req = req;
|
|
return BLK_STS_OK;
|
|
}
|
|
|
|
static blk_status_t ps3disk_do_request(struct ps3_storage_device *dev,
|
|
struct request *req)
|
|
{
|
|
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
|
|
|
|
switch (req_op(req)) {
|
|
case REQ_OP_FLUSH:
|
|
return ps3disk_submit_flush_request(dev, req);
|
|
case REQ_OP_READ:
|
|
case REQ_OP_WRITE:
|
|
return ps3disk_submit_request_sg(dev, req);
|
|
default:
|
|
blk_dump_rq_flags(req, DEVICE_NAME " bad request");
|
|
return BLK_STS_IOERR;
|
|
}
|
|
}
|
|
|
|
static blk_status_t ps3disk_queue_rq(struct blk_mq_hw_ctx *hctx,
|
|
const struct blk_mq_queue_data *bd)
|
|
{
|
|
struct request_queue *q = hctx->queue;
|
|
struct ps3_storage_device *dev = q->queuedata;
|
|
struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
|
|
blk_status_t ret;
|
|
|
|
blk_mq_start_request(bd->rq);
|
|
|
|
spin_lock_irq(&priv->lock);
|
|
ret = ps3disk_do_request(dev, bd->rq);
|
|
spin_unlock_irq(&priv->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
blk_status_t error;
|
|
u64 tag, status;
|
|
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 %llx, expected %llx\n",
|
|
__func__, __LINE__, tag, dev->tag);
|
|
|
|
if (res) {
|
|
dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n",
|
|
__func__, __LINE__, res, status);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
priv = ps3_system_bus_get_drvdata(&dev->sbd);
|
|
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_op(req) == REQ_OP_FLUSH) {
|
|
read = 0;
|
|
op = "flush";
|
|
} else {
|
|
read = !rq_data_dir(req);
|
|
op = read ? "read" : "write";
|
|
}
|
|
if (status) {
|
|
dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__,
|
|
__LINE__, op, status);
|
|
error = BLK_STS_IOERR;
|
|
} else {
|
|
dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__,
|
|
__LINE__, op);
|
|
error = 0;
|
|
if (read)
|
|
ps3disk_scatter_gather(dev, req, 0);
|
|
}
|
|
|
|
spin_lock(&priv->lock);
|
|
priv->req = NULL;
|
|
blk_mq_end_request(req, error);
|
|
spin_unlock(&priv->lock);
|
|
|
|
blk_mq_run_hw_queues(priv->queue, true);
|
|
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%llx\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 = ps3_system_bus_get_drvdata(&dev->sbd);
|
|
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%llx\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 unsigned long ps3disk_mask;
|
|
|
|
static DEFINE_MUTEX(ps3disk_mask_mutex);
|
|
|
|
static const struct blk_mq_ops ps3disk_mq_ops = {
|
|
.queue_rq = ps3disk_queue_rq,
|
|
};
|
|
|
|
static int 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 < 512) {
|
|
dev_err(&dev->sbd.core,
|
|
"%s:%u: cannot handle block size %llu\n", __func__,
|
|
__LINE__, dev->blk_size);
|
|
return -EINVAL;
|
|
}
|
|
|
|
BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG);
|
|
mutex_lock(&ps3disk_mask_mutex);
|
|
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__);
|
|
mutex_unlock(&ps3disk_mask_mutex);
|
|
return -ENOSPC;
|
|
}
|
|
__set_bit(devidx, &ps3disk_mask);
|
|
mutex_unlock(&ps3disk_mask_mutex);
|
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv) {
|
|
error = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
ps3_system_bus_set_drvdata(_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_mq_init_sq_queue(&priv->tag_set, &ps3disk_mq_ops, 1,
|
|
BLK_MQ_F_SHOULD_MERGE);
|
|
if (IS_ERR(queue)) {
|
|
dev_err(&dev->sbd.core, "%s:%u: blk_mq_init_queue failed\n",
|
|
__func__, __LINE__);
|
|
error = PTR_ERR(queue);
|
|
goto fail_teardown;
|
|
}
|
|
|
|
priv->queue = queue;
|
|
queue->queuedata = dev;
|
|
|
|
blk_queue_max_hw_sectors(queue, dev->bounce_size >> 9);
|
|
blk_queue_dma_alignment(queue, dev->blk_size-1);
|
|
blk_queue_logical_block_size(queue, dev->blk_size);
|
|
|
|
blk_queue_write_cache(queue, true, false);
|
|
|
|
blk_queue_max_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;
|
|
snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME,
|
|
devidx+'a');
|
|
priv->blocking_factor = dev->blk_size >> 9;
|
|
set_capacity(gendisk,
|
|
dev->regions[dev->region_idx].size*priv->blocking_factor);
|
|
|
|
dev_info(&dev->sbd.core,
|
|
"%s is a %s (%llu MiB total, %llu MiB for OtherOS)\n",
|
|
gendisk->disk_name, priv->model, priv->raw_capacity >> 11,
|
|
get_capacity(gendisk) >> 11);
|
|
|
|
device_add_disk(&dev->sbd.core, gendisk, NULL);
|
|
return 0;
|
|
|
|
fail_cleanup_queue:
|
|
blk_cleanup_queue(queue);
|
|
blk_mq_free_tag_set(&priv->tag_set);
|
|
fail_teardown:
|
|
ps3stor_teardown(dev);
|
|
fail_free_bounce:
|
|
kfree(dev->bounce_buf);
|
|
fail_free_priv:
|
|
kfree(priv);
|
|
ps3_system_bus_set_drvdata(_dev, NULL);
|
|
fail:
|
|
mutex_lock(&ps3disk_mask_mutex);
|
|
__clear_bit(devidx, &ps3disk_mask);
|
|
mutex_unlock(&ps3disk_mask_mutex);
|
|
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 = ps3_system_bus_get_drvdata(&dev->sbd);
|
|
|
|
mutex_lock(&ps3disk_mask_mutex);
|
|
__clear_bit(MINOR(disk_devt(priv->gendisk)) / PS3DISK_MINORS,
|
|
&ps3disk_mask);
|
|
mutex_unlock(&ps3disk_mask_mutex);
|
|
del_gendisk(priv->gendisk);
|
|
blk_cleanup_queue(priv->queue);
|
|
blk_mq_free_tag_set(&priv->tag_set);
|
|
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);
|
|
ps3_system_bus_set_drvdata(_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);
|