@@ -194,7 +194,7 @@ cache_type_store(struct device *dev, struct device_attribute *attr,
}
if (scsi_mode_sense(sdp, 0x08, 8, buffer, sizeof(buffer), SD_TIMEOUT,
- SD_MAX_RETRIES, &data, NULL))
+ sdkp->max_retries, &data, NULL))
return -EINVAL;
len = min_t(size_t, sizeof(buffer), data.length - data.header_length -
data.block_descriptor_length);
@@ -212,7 +212,7 @@ cache_type_store(struct device *dev, struct device_attribute *attr,
data.device_specific = 0;
if (scsi_mode_select(sdp, 1, sp, 8, buffer_data, len, SD_TIMEOUT,
- SD_MAX_RETRIES, &data, &sshdr)) {
+ sdkp->max_retries, &data, &sshdr)) {
if (scsi_sense_valid(&sshdr))
sd_print_sense_hdr(sdkp, &sshdr);
return -EINVAL;
@@ -543,6 +543,39 @@ zoned_cap_show(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR_RO(zoned_cap);
+static ssize_t
+max_retries_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct scsi_disk *sdkp = to_scsi_disk(dev);
+ struct scsi_device *sdev = sdkp->device;
+ int retries, err;
+
+ err = kstrtoint(buf, 10, &retries);
+ if (err)
+ return err;
+
+ if (retries == SCSI_CMD_RETRIES_NO_LIMIT || retries <= SD_MAX_RETRIES) {
+ sdkp->max_retries = retries;
+ return count;
+ }
+
+ sdev_printk(KERN_ERR, sdev, "max_retries must be between -1 and %d\n",
+ SD_MAX_RETRIES);
+ return -EINVAL;
+}
+
+static ssize_t
+max_retries_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_disk *sdkp = to_scsi_disk(dev);
+
+ return sprintf(buf, "%d\n", sdkp->max_retries);
+}
+
+static DEVICE_ATTR_RW(max_retries);
+
static struct attribute *sd_disk_attrs[] = {
&dev_attr_cache_type.attr,
&dev_attr_FUA.attr,
@@ -557,6 +590,7 @@ static struct attribute *sd_disk_attrs[] = {
&dev_attr_max_write_same_blocks.attr,
&dev_attr_max_medium_access_timeouts.attr,
&dev_attr_zoned_cap.attr,
+ &dev_attr_max_retries.attr,
NULL,
};
ATTRIBUTE_GROUPS(sd_disk);
@@ -665,7 +699,8 @@ static void scsi_disk_put(struct scsi_disk *sdkp)
static int sd_sec_submit(void *data, u16 spsp, u8 secp, void *buffer,
size_t len, bool send)
{
- struct scsi_device *sdev = data;
+ struct scsi_disk *sdkp = data;
+ struct scsi_device *sdev = sdkp->device;
u8 cdb[12] = { 0, };
int ret;
@@ -676,7 +711,7 @@ static int sd_sec_submit(void *data, u16 spsp, u8 secp, void *buffer,
ret = scsi_execute_req(sdev, cdb,
send ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
- buffer, len, NULL, SD_TIMEOUT, SD_MAX_RETRIES, NULL);
+ buffer, len, NULL, SD_TIMEOUT, sdkp->max_retries, NULL);
return ret <= 0 ? ret : -EIO;
}
#endif /* CONFIG_BLK_SED_OPAL */
@@ -839,6 +874,7 @@ static blk_status_t sd_setup_unmap_cmnd(struct scsi_cmnd *cmd)
{
struct scsi_device *sdp = cmd->device;
struct request *rq = cmd->request;
+ struct scsi_disk *sdkp = scsi_disk(rq->rq_disk);
u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq));
u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq));
unsigned int data_len = 24;
@@ -862,7 +898,7 @@ static blk_status_t sd_setup_unmap_cmnd(struct scsi_cmnd *cmd)
put_unaligned_be64(lba, &buf[8]);
put_unaligned_be32(nr_blocks, &buf[16]);
- cmd->allowed = SD_MAX_RETRIES;
+ cmd->allowed = sdkp->max_retries;
cmd->transfersize = data_len;
rq->timeout = SD_TIMEOUT;
@@ -874,6 +910,7 @@ static blk_status_t sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd,
{
struct scsi_device *sdp = cmd->device;
struct request *rq = cmd->request;
+ struct scsi_disk *sdkp = scsi_disk(rq->rq_disk);
u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq));
u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq));
u32 data_len = sdp->sector_size;
@@ -893,7 +930,7 @@ static blk_status_t sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd,
put_unaligned_be64(lba, &cmd->cmnd[2]);
put_unaligned_be32(nr_blocks, &cmd->cmnd[10]);
- cmd->allowed = SD_MAX_RETRIES;
+ cmd->allowed = sdkp->max_retries;
cmd->transfersize = data_len;
rq->timeout = unmap ? SD_TIMEOUT : SD_WRITE_SAME_TIMEOUT;
@@ -905,6 +942,7 @@ static blk_status_t sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd,
{
struct scsi_device *sdp = cmd->device;
struct request *rq = cmd->request;
+ struct scsi_disk *sdkp = scsi_disk(rq->rq_disk);
u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq));
u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq));
u32 data_len = sdp->sector_size;
@@ -924,7 +962,7 @@ static blk_status_t sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd,
put_unaligned_be32(lba, &cmd->cmnd[2]);
put_unaligned_be16(nr_blocks, &cmd->cmnd[7]);
- cmd->allowed = SD_MAX_RETRIES;
+ cmd->allowed = sdkp->max_retries;
cmd->transfersize = data_len;
rq->timeout = unmap ? SD_TIMEOUT : SD_WRITE_SAME_TIMEOUT;
@@ -1056,7 +1094,7 @@ static blk_status_t sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
}
cmd->transfersize = sdp->sector_size;
- cmd->allowed = SD_MAX_RETRIES;
+ cmd->allowed = sdkp->max_retries;
/*
* For WRITE SAME the data transferred via the DATA OUT buffer is
@@ -1078,6 +1116,7 @@ static blk_status_t sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
{
struct request *rq = cmd->request;
+ struct scsi_disk *sdkp = scsi_disk(rq->rq_disk);
/* flush requests don't perform I/O, zero the S/G table */
memset(&cmd->sdb, 0, sizeof(cmd->sdb));
@@ -1085,7 +1124,7 @@ static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
cmd->cmnd[0] = SYNCHRONIZE_CACHE;
cmd->cmd_len = 10;
cmd->transfersize = 0;
- cmd->allowed = SD_MAX_RETRIES;
+ cmd->allowed = sdkp->max_retries;
rq->timeout = rq->q->rq_timeout * SD_FLUSH_TIMEOUT_MULTIPLIER;
return BLK_STS_OK;
@@ -1262,7 +1301,7 @@ static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd)
*/
cmd->transfersize = sdp->sector_size;
cmd->underflow = nr_blocks << 9;
- cmd->allowed = SD_MAX_RETRIES;
+ cmd->allowed = sdkp->max_retries;
cmd->sdb.length = nr_blocks * sdp->sector_size;
SCSI_LOG_HLQUEUE(1,
@@ -1609,7 +1648,7 @@ static unsigned int sd_check_events(struct gendisk *disk, unsigned int clearing)
if (scsi_block_when_processing_errors(sdp)) {
struct scsi_sense_hdr sshdr = { 0, };
- retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, SD_MAX_RETRIES,
+ retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, sdkp->max_retries,
&sshdr);
/* failed to execute TUR, assume media not present */
@@ -1666,7 +1705,7 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr)
* flush everything.
*/
res = scsi_execute(sdp, cmd, DMA_NONE, NULL, 0, NULL, sshdr,
- timeout, SD_MAX_RETRIES, 0, RQF_PM, NULL);
+ timeout, sdkp->max_retries, 0, RQF_PM, NULL);
if (res == 0)
break;
}
@@ -1761,7 +1800,8 @@ static char sd_pr_type(enum pr_type type)
static int sd_pr_command(struct block_device *bdev, u8 sa,
u64 key, u64 sa_key, u8 type, u8 flags)
{
- struct scsi_device *sdev = scsi_disk(bdev->bd_disk)->device;
+ struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk);
+ struct scsi_device *sdev = sdkp->device;
struct scsi_sense_hdr sshdr;
int result;
u8 cmd[16] = { 0, };
@@ -1777,7 +1817,7 @@ static int sd_pr_command(struct block_device *bdev, u8 sa,
data[20] = flags;
result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, &data, sizeof(data),
- &sshdr, SD_TIMEOUT, SD_MAX_RETRIES, NULL);
+ &sshdr, SD_TIMEOUT, sdkp->max_retries, NULL);
if (driver_byte(result) == DRIVER_SENSE &&
scsi_sense_valid(&sshdr)) {
@@ -2114,7 +2154,7 @@ sd_spinup_disk(struct scsi_disk *sdkp)
the_result = scsi_execute_req(sdkp->device, cmd,
DMA_NONE, NULL, 0,
&sshdr, SD_TIMEOUT,
- SD_MAX_RETRIES, NULL);
+ sdkp->max_retries, NULL);
/*
* If the drive has indicated to us that it
@@ -2170,7 +2210,7 @@ sd_spinup_disk(struct scsi_disk *sdkp)
cmd[4] |= 1 << 4;
scsi_execute_req(sdkp->device, cmd, DMA_NONE,
NULL, 0, &sshdr,
- SD_TIMEOUT, SD_MAX_RETRIES,
+ SD_TIMEOUT, sdkp->max_retries,
NULL);
spintime_expire = jiffies + 100 * HZ;
spintime = 1;
@@ -2312,7 +2352,7 @@ static int read_capacity_16(struct scsi_disk *sdkp, struct scsi_device *sdp,
the_result = scsi_execute_req(sdp, cmd, DMA_FROM_DEVICE,
buffer, RC16_LEN, &sshdr,
- SD_TIMEOUT, SD_MAX_RETRIES, NULL);
+ SD_TIMEOUT, sdkp->max_retries, NULL);
if (media_not_present(sdkp, &sshdr))
return -ENODEV;
@@ -2397,7 +2437,7 @@ static int read_capacity_10(struct scsi_disk *sdkp, struct scsi_device *sdp,
the_result = scsi_execute_req(sdp, cmd, DMA_FROM_DEVICE,
buffer, 8, &sshdr,
- SD_TIMEOUT, SD_MAX_RETRIES, NULL);
+ SD_TIMEOUT, sdkp->max_retries, NULL);
if (media_not_present(sdkp, &sshdr))
return -ENODEV;
@@ -2582,12 +2622,12 @@ sd_print_capacity(struct scsi_disk *sdkp,
/* called with buffer of length 512 */
static inline int
-sd_do_mode_sense(struct scsi_device *sdp, int dbd, int modepage,
+sd_do_mode_sense(struct scsi_disk *sdkp, int dbd, int modepage,
unsigned char *buffer, int len, struct scsi_mode_data *data,
struct scsi_sense_hdr *sshdr)
{
- return scsi_mode_sense(sdp, dbd, modepage, buffer, len,
- SD_TIMEOUT, SD_MAX_RETRIES, data,
+ return scsi_mode_sense(sdkp->device, dbd, modepage, buffer, len,
+ SD_TIMEOUT, sdkp->max_retries, data,
sshdr);
}
@@ -2610,14 +2650,14 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer)
}
if (sdp->use_192_bytes_for_3f) {
- res = sd_do_mode_sense(sdp, 0, 0x3F, buffer, 192, &data, NULL);
+ res = sd_do_mode_sense(sdkp, 0, 0x3F, buffer, 192, &data, NULL);
} else {
/*
* First attempt: ask for all pages (0x3F), but only 4 bytes.
* We have to start carefully: some devices hang if we ask
* for more than is available.
*/
- res = sd_do_mode_sense(sdp, 0, 0x3F, buffer, 4, &data, NULL);
+ res = sd_do_mode_sense(sdkp, 0, 0x3F, buffer, 4, &data, NULL);
/*
* Second attempt: ask for page 0 When only page 0 is
@@ -2626,13 +2666,13 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer)
* CDB.
*/
if (!scsi_status_is_good(res))
- res = sd_do_mode_sense(sdp, 0, 0, buffer, 4, &data, NULL);
+ res = sd_do_mode_sense(sdkp, 0, 0, buffer, 4, &data, NULL);
/*
* Third attempt: ask 255 bytes, as we did earlier.
*/
if (!scsi_status_is_good(res))
- res = sd_do_mode_sense(sdp, 0, 0x3F, buffer, 255,
+ res = sd_do_mode_sense(sdkp, 0, 0x3F, buffer, 255,
&data, NULL);
}
@@ -2694,7 +2734,7 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer)
}
/* cautiously ask */
- res = sd_do_mode_sense(sdp, dbd, modepage, buffer, first_len,
+ res = sd_do_mode_sense(sdkp, dbd, modepage, buffer, first_len,
&data, &sshdr);
if (!scsi_status_is_good(res))
@@ -2726,7 +2766,7 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer)
/* Get the data */
if (len > first_len)
- res = sd_do_mode_sense(sdp, dbd, modepage, buffer, len,
+ res = sd_do_mode_sense(sdkp, dbd, modepage, buffer, len,
&data, &sshdr);
if (scsi_status_is_good(res)) {
@@ -2845,7 +2885,7 @@ static void sd_read_app_tag_own(struct scsi_disk *sdkp, unsigned char *buffer)
return;
res = scsi_mode_sense(sdp, 1, 0x0a, buffer, 36, SD_TIMEOUT,
- SD_MAX_RETRIES, &data, &sshdr);
+ sdkp->max_retries, &data, &sshdr);
if (!scsi_status_is_good(res) || !data.header_length ||
data.length < 6) {
@@ -3368,6 +3408,7 @@ static int sd_probe(struct device *dev)
sdkp->driver = &sd_template;
sdkp->disk = gd;
sdkp->index = index;
+ sdkp->max_retries = SD_MAX_RETRIES;
atomic_set(&sdkp->openers, 0);
atomic_set(&sdkp->device->ioerr_cnt, 0);
@@ -3431,7 +3472,7 @@ static int sd_probe(struct device *dev)
sd_revalidate_disk(gd);
if (sdkp->security) {
- sdkp->opal_dev = init_opal_dev(sdp, &sd_sec_submit);
+ sdkp->opal_dev = init_opal_dev(sdkp, &sd_sec_submit);
if (sdkp->opal_dev)
sd_printk(KERN_NOTICE, sdkp, "supports TCG Opal\n");
}
@@ -3546,7 +3587,7 @@ static int sd_start_stop_device(struct scsi_disk *sdkp, int start)
return -ENODEV;
res = scsi_execute(sdp, cmd, DMA_NONE, NULL, 0, NULL, &sshdr,
- SD_TIMEOUT, SD_MAX_RETRIES, 0, RQF_PM, NULL);
+ SD_TIMEOUT, sdkp->max_retries, 0, RQF_PM, NULL);
if (res) {
sd_print_result(sdkp, "Start/Stop Unit failed", res);
if (driver_byte(res) == DRIVER_SENSE)
@@ -90,6 +90,7 @@ struct scsi_disk {
#endif
atomic_t openers;
sector_t capacity; /* size in logical blocks */
+ int max_retries;
u32 max_xfer_blocks;
u32 opt_xfer_blocks;
u32 max_ws_blocks;