diff options
Diffstat (limited to 'include/scsi/scsi_device.h')
| -rw-r--r-- | include/scsi/scsi_device.h | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 6d6500148c4b..d32f5841f4f8 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -179,6 +179,12 @@ struct scsi_device { unsigned manage_shutdown:1; /* + * If true, let the high-level device driver (sd) manage the device + * power state for system restart (reboot) operations. + */ + unsigned manage_restart:1; + + /* * If set and if the device is runtime suspended, ask the high-level * device driver (sd) to force a runtime resume of the device. */ @@ -252,8 +258,8 @@ struct scsi_device { unsigned int queue_stopped; /* request queue is quiesced */ bool offline_already; /* Device offline message logged */ - unsigned int ua_new_media_ctr; /* Counter for New Media UNIT ATTENTIONs */ - unsigned int ua_por_ctr; /* Counter for Power On / Reset UAs */ + atomic_t ua_new_media_ctr; /* Counter for New Media UNIT ATTENTIONs */ + atomic_t ua_por_ctr; /* Counter for Power On / Reset UAs */ atomic_t disk_events_disable_depth; /* disable depth for disk events */ @@ -313,8 +319,8 @@ sdev_prefix_printk(const char *, const struct scsi_device *, const char *, #define sdev_printk(l, sdev, fmt, a...) \ sdev_prefix_printk(l, sdev, NULL, fmt, ##a) -__printf(3, 4) void -scmd_printk(const char *, const struct scsi_cmnd *, const char *, ...); +__printf(3, 4) void scmd_printk(const char *, struct scsi_cmnd *, const char *, + ...); #define scmd_dbg(scmd, fmt, a...) \ do { \ @@ -558,6 +564,10 @@ int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd, const struct scsi_exec_args *args); void scsi_failures_reset_retries(struct scsi_failures *failures); +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, + enum dma_data_direction data_direction, + blk_mq_req_flags_t flags); +void scsi_put_internal_cmd(struct scsi_cmnd *scmd); extern void sdev_disable_disk_events(struct scsi_device *sdev); extern void sdev_enable_disk_events(struct scsi_device *sdev); extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t); @@ -589,6 +599,22 @@ static inline unsigned int sdev_id(struct scsi_device *sdev) #define scmd_id(scmd) sdev_id((scmd)->device) #define scmd_channel(scmd) sdev_channel((scmd)->device) +/** + * scsi_device_is_pseudo_dev() - Whether a device is a pseudo SCSI device. + * @sdev: SCSI device to examine + * + * A pseudo SCSI device can be used to allocate SCSI commands but does not show + * up in sysfs. Additionally, the logical unit information in *@sdev is made up. + * + * This function tests the LUN number instead of comparing @sdev with + * @sdev->host->pseudo_sdev because this function may be called before + * @sdev->host->pseudo_sdev has been initialized. + */ +static inline bool scsi_device_is_pseudo_dev(struct scsi_device *sdev) +{ + return sdev->lun == U64_MAX; +} + /* * checks for positions of the SCSI state machine */ @@ -693,10 +719,8 @@ static inline int scsi_device_busy(struct scsi_device *sdev) } /* Macros to access the UNIT ATTENTION counters */ -#define scsi_get_ua_new_media_ctr(sdev) \ - ((const unsigned int)(sdev->ua_new_media_ctr)) -#define scsi_get_ua_por_ctr(sdev) \ - ((const unsigned int)(sdev->ua_por_ctr)) +#define scsi_get_ua_new_media_ctr(sdev) atomic_read(&sdev->ua_new_media_ctr) +#define scsi_get_ua_por_ctr(sdev) atomic_read(&sdev->ua_por_ctr) #define MODULE_ALIAS_SCSI_DEVICE(type) \ MODULE_ALIAS("scsi:t-" __stringify(type) "*") |