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path: root/drivers/scsi/sd.c
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Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c59
1 files changed, 43 insertions, 16 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 5247abe4f266..84edbc0a5747 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -184,7 +184,7 @@ cache_type_store(struct device *dev, struct device_attribute *attr,
return count;
}
- if (scsi_mode_sense(sdp, 0x08, 8, buffer, sizeof(buffer), SD_TIMEOUT,
+ if (scsi_mode_sense(sdp, 0x08, 8, 0, buffer, sizeof(buffer), SD_TIMEOUT,
sdkp->max_retries, &data, NULL))
return -EINVAL;
len = min_t(size_t, sizeof(buffer), data.length - data.header_length -
@@ -1042,13 +1042,14 @@ static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
static blk_status_t sd_setup_rw32_cmnd(struct scsi_cmnd *cmd, bool write,
sector_t lba, unsigned int nr_blocks,
- unsigned char flags)
+ unsigned char flags, unsigned int dld)
{
cmd->cmd_len = SD_EXT_CDB_SIZE;
cmd->cmnd[0] = VARIABLE_LENGTH_CMD;
cmd->cmnd[7] = 0x18; /* Additional CDB len */
cmd->cmnd[9] = write ? WRITE_32 : READ_32;
cmd->cmnd[10] = flags;
+ cmd->cmnd[11] = dld & 0x07;
put_unaligned_be64(lba, &cmd->cmnd[12]);
put_unaligned_be32(lba, &cmd->cmnd[20]); /* Expected Indirect LBA */
put_unaligned_be32(nr_blocks, &cmd->cmnd[28]);
@@ -1058,12 +1059,12 @@ static blk_status_t sd_setup_rw32_cmnd(struct scsi_cmnd *cmd, bool write,
static blk_status_t sd_setup_rw16_cmnd(struct scsi_cmnd *cmd, bool write,
sector_t lba, unsigned int nr_blocks,
- unsigned char flags)
+ unsigned char flags, unsigned int dld)
{
cmd->cmd_len = 16;
cmd->cmnd[0] = write ? WRITE_16 : READ_16;
- cmd->cmnd[1] = flags;
- cmd->cmnd[14] = 0;
+ cmd->cmnd[1] = flags | ((dld >> 2) & 0x01);
+ cmd->cmnd[14] = (dld & 0x03) << 6;
cmd->cmnd[15] = 0;
put_unaligned_be64(lba, &cmd->cmnd[2]);
put_unaligned_be32(nr_blocks, &cmd->cmnd[10]);
@@ -1115,6 +1116,31 @@ static blk_status_t sd_setup_rw6_cmnd(struct scsi_cmnd *cmd, bool write,
return BLK_STS_OK;
}
+/*
+ * Check if a command has a duration limit set. If it does, and the target
+ * device supports CDL and the feature is enabled, return the limit
+ * descriptor index to use. Return 0 (no limit) otherwise.
+ */
+static int sd_cdl_dld(struct scsi_disk *sdkp, struct scsi_cmnd *scmd)
+{
+ struct scsi_device *sdp = sdkp->device;
+ int hint;
+
+ if (!sdp->cdl_supported || !sdp->cdl_enable)
+ return 0;
+
+ /*
+ * Use "no limit" if the request ioprio does not specify a duration
+ * limit hint.
+ */
+ hint = IOPRIO_PRIO_HINT(req_get_ioprio(scsi_cmd_to_rq(scmd)));
+ if (hint < IOPRIO_HINT_DEV_DURATION_LIMIT_1 ||
+ hint > IOPRIO_HINT_DEV_DURATION_LIMIT_7)
+ return 0;
+
+ return (hint - IOPRIO_HINT_DEV_DURATION_LIMIT_1) + 1;
+}
+
static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd)
{
struct request *rq = scsi_cmd_to_rq(cmd);
@@ -1126,6 +1152,7 @@ static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd)
unsigned int mask = logical_to_sectors(sdp, 1) - 1;
bool write = rq_data_dir(rq) == WRITE;
unsigned char protect, fua;
+ unsigned int dld;
blk_status_t ret;
unsigned int dif;
bool dix;
@@ -1175,6 +1202,7 @@ static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd)
fua = rq->cmd_flags & REQ_FUA ? 0x8 : 0;
dix = scsi_prot_sg_count(cmd);
dif = scsi_host_dif_capable(cmd->device->host, sdkp->protection_type);
+ dld = sd_cdl_dld(sdkp, cmd);
if (dif || dix)
protect = sd_setup_protect_cmnd(cmd, dix, dif);
@@ -1183,10 +1211,10 @@ static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd)
if (protect && sdkp->protection_type == T10_PI_TYPE2_PROTECTION) {
ret = sd_setup_rw32_cmnd(cmd, write, lba, nr_blocks,
- protect | fua);
+ protect | fua, dld);
} else if (sdp->use_16_for_rw || (nr_blocks > 0xffff)) {
ret = sd_setup_rw16_cmnd(cmd, write, lba, nr_blocks,
- protect | fua);
+ protect | fua, dld);
} else if ((nr_blocks > 0xff) || (lba > 0x1fffff) ||
sdp->use_10_for_rw || protect) {
ret = sd_setup_rw10_cmnd(cmd, write, lba, nr_blocks,
@@ -2683,9 +2711,8 @@ sd_do_mode_sense(struct scsi_disk *sdkp, int dbd, int modepage,
if (sdkp->device->use_10_for_ms && len < 8)
len = 8;
- return scsi_mode_sense(sdkp->device, dbd, modepage, buffer, len,
- SD_TIMEOUT, sdkp->max_retries, data,
- sshdr);
+ return scsi_mode_sense(sdkp->device, dbd, modepage, 0, buffer, len,
+ SD_TIMEOUT, sdkp->max_retries, data, sshdr);
}
/*
@@ -2942,7 +2969,7 @@ static void sd_read_app_tag_own(struct scsi_disk *sdkp, unsigned char *buffer)
if (sdkp->protection_type == 0)
return;
- res = scsi_mode_sense(sdp, 1, 0x0a, buffer, 36, SD_TIMEOUT,
+ res = scsi_mode_sense(sdp, 1, 0x0a, 0, buffer, 36, SD_TIMEOUT,
sdkp->max_retries, &data, &sshdr);
if (res < 0 || !data.header_length ||
@@ -3131,7 +3158,7 @@ static void sd_read_write_same(struct scsi_disk *sdkp, unsigned char *buffer)
return;
}
- if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, INQUIRY) < 0) {
+ if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, INQUIRY, 0) < 0) {
struct scsi_vpd *vpd;
sdev->no_report_opcodes = 1;
@@ -3147,10 +3174,10 @@ static void sd_read_write_same(struct scsi_disk *sdkp, unsigned char *buffer)
rcu_read_unlock();
}
- if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, WRITE_SAME_16) == 1)
+ if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, WRITE_SAME_16, 0) == 1)
sdkp->ws16 = 1;
- if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, WRITE_SAME) == 1)
+ if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, WRITE_SAME, 0) == 1)
sdkp->ws10 = 1;
}
@@ -3162,9 +3189,9 @@ static void sd_read_security(struct scsi_disk *sdkp, unsigned char *buffer)
return;
if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE,
- SECURITY_PROTOCOL_IN) == 1 &&
+ SECURITY_PROTOCOL_IN, 0) == 1 &&
scsi_report_opcode(sdev, buffer, SD_BUF_SIZE,
- SECURITY_PROTOCOL_OUT) == 1)
+ SECURITY_PROTOCOL_OUT, 0) == 1)
sdkp->security = 1;
}
generated by cgit (git 2.34.1) at 2024-05-14 15:03:19 +0000