summaryrefslogtreecommitdiffstats
path: root/include/scsi/scsi_device.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--include/scsi/scsi_device.h56
1 files changed, 38 insertions, 18 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index fdc31fdb6..a64713fe5 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -100,10 +100,6 @@ struct scsi_vpd {
unsigned char data[];
};
-enum scsi_vpd_parameters {
- SCSI_VPD_HEADER_SIZE = 4,
-};
-
struct scsi_device {
struct Scsi_Host *host;
struct request_queue *request_queue;
@@ -208,6 +204,7 @@ struct scsi_device {
unsigned use_10_for_rw:1; /* first try 10-byte read / write */
unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
unsigned set_dbd_for_ms:1; /* Set "DBD" field in mode sense */
+ unsigned read_before_ms:1; /* perform a READ before MODE SENSE */
unsigned no_report_opcodes:1; /* no REPORT SUPPORTED OPERATION CODES */
unsigned no_write_same:1; /* no WRITE SAME command */
unsigned use_16_for_rw:1; /* Use read/write(16) over read/write(10) */
@@ -483,28 +480,51 @@ extern const char *scsi_device_state_name(enum scsi_device_state);
extern int scsi_is_sdev_device(const struct device *);
extern int scsi_is_target_device(const struct device *);
extern void scsi_sanitize_inquiry_string(unsigned char *s, int len);
-extern int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
- int data_direction, void *buffer, unsigned bufflen,
- unsigned char *sense, struct scsi_sense_hdr *sshdr,
- int timeout, int retries, blk_opf_t flags,
- req_flags_t rq_flags, int *resid);
+
+/* Optional arguments to scsi_execute_cmd */
+struct scsi_exec_args {
+ unsigned char *sense; /* sense buffer */
+ unsigned int sense_len; /* sense buffer len */
+ struct scsi_sense_hdr *sshdr; /* decoded sense header */
+ blk_mq_req_flags_t req_flags; /* BLK_MQ_REQ flags */
+ int *resid; /* residual length */
+};
+
+int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,
+ blk_opf_t opf, void *buffer, unsigned int bufflen,
+ int timeout, int retries,
+ const struct scsi_exec_args *args);
+
/* Make sure any sense buffer is the correct size. */
-#define scsi_execute(sdev, cmd, data_direction, buffer, bufflen, sense, \
- sshdr, timeout, retries, flags, rq_flags, resid) \
+#define scsi_execute(_sdev, _cmd, _data_dir, _buffer, _bufflen, _sense, \
+ _sshdr, _timeout, _retries, _flags, _rq_flags, \
+ _resid) \
({ \
- BUILD_BUG_ON((sense) != NULL && \
- sizeof(sense) != SCSI_SENSE_BUFFERSIZE); \
- __scsi_execute(sdev, cmd, data_direction, buffer, bufflen, \
- sense, sshdr, timeout, retries, flags, rq_flags, \
- resid); \
+ scsi_execute_cmd(_sdev, _cmd, (_data_dir == DMA_TO_DEVICE ? \
+ REQ_OP_DRV_OUT : REQ_OP_DRV_IN) | _flags, \
+ _buffer, _bufflen, _timeout, _retries, \
+ &(struct scsi_exec_args) { \
+ .sense = _sense, \
+ .sshdr = _sshdr, \
+ .req_flags = _rq_flags & RQF_PM ? \
+ BLK_MQ_REQ_PM : 0, \
+ .resid = _resid, \
+ }); \
})
+
static inline int scsi_execute_req(struct scsi_device *sdev,
const unsigned char *cmd, int data_direction, void *buffer,
unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
int retries, int *resid)
{
- return scsi_execute(sdev, cmd, data_direction, buffer,
- bufflen, NULL, sshdr, timeout, retries, 0, 0, resid);
+ return scsi_execute_cmd(sdev, cmd,
+ data_direction == DMA_TO_DEVICE ?
+ REQ_OP_DRV_OUT : REQ_OP_DRV_IN, buffer,
+ bufflen, timeout, retries,
+ &(struct scsi_exec_args) {
+ .sshdr = sshdr,
+ .resid = resid,
+ });
}
extern void sdev_disable_disk_events(struct scsi_device *sdev);
extern void sdev_enable_disk_events(struct scsi_device *sdev);