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-rw-r--r--include/linux/ata.h11
-rw-r--r--include/linux/blk_types.h6
-rw-r--r--include/linux/libata.h42
-rw-r--r--include/scsi/scsi_cmnd.h5
-rw-r--r--include/scsi/scsi_device.h18
-rw-r--r--include/uapi/linux/ioprio.h68
6 files changed, 125 insertions, 25 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h
index c224dbddb9b2..792e10a09787 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -322,15 +322,21 @@ enum {
ATA_LOG_SATA_NCQ = 0x10,
ATA_LOG_NCQ_NON_DATA = 0x12,
ATA_LOG_NCQ_SEND_RECV = 0x13,
+ ATA_LOG_CDL = 0x18,
+ ATA_LOG_CDL_SIZE = ATA_SECT_SIZE,
ATA_LOG_IDENTIFY_DEVICE = 0x30,
+ ATA_LOG_SENSE_NCQ = 0x0F,
+ ATA_LOG_SENSE_NCQ_SIZE = ATA_SECT_SIZE * 2,
ATA_LOG_CONCURRENT_POSITIONING_RANGES = 0x47,
/* Identify device log pages: */
+ ATA_LOG_SUPPORTED_CAPABILITIES = 0x03,
+ ATA_LOG_CURRENT_SETTINGS = 0x04,
ATA_LOG_SECURITY = 0x06,
ATA_LOG_SATA_SETTINGS = 0x08,
ATA_LOG_ZONED_INFORMATION = 0x09,
- /* Identify device SATA settings log:*/
+ /* Identify device SATA settings log: */
ATA_LOG_DEVSLP_OFFSET = 0x30,
ATA_LOG_DEVSLP_SIZE = 0x08,
ATA_LOG_DEVSLP_MDAT = 0x00,
@@ -415,6 +421,8 @@ enum {
SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
+ SETFEATURES_CDL = 0x0d, /* Enable/disable cmd duration limits */
+
/* SETFEATURE Sector counts for SATA features */
SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
@@ -425,6 +433,7 @@ enum {
SATA_DEVSLP = 0x09, /* Device Sleep */
SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */
+ SETFEATURE_SENSE_DATA_SUCC_NCQ = 0xC4, /* Sense Data for successful NCQ commands */
/* feature values for SET_MAX */
ATA_SET_MAX_ADDR = 0x00,
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 936e898016f8..bb573f87c8d1 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -171,6 +171,12 @@ typedef u16 blk_short_t;
*/
#define BLK_STS_OFFLINE ((__force blk_status_t)17)
+/*
+ * BLK_STS_DURATION_LIMIT is returned from the driver when the target device
+ * aborted the command because it exceeded one of its Command Duration Limits.
+ */
+#define BLK_STS_DURATION_LIMIT ((__force blk_status_t)18)
+
/**
* blk_path_error - returns true if error may be path related
* @error: status the request was completed with
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 311cd93377c7..5c8ef33b0af2 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -94,17 +94,19 @@ enum {
ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
ATA_DFLAG_NCQ_SEND_RECV = (1 << 11), /* device supports NCQ SEND and RECV */
ATA_DFLAG_NCQ_PRIO = (1 << 12), /* device supports NCQ priority */
- ATA_DFLAG_CFG_MASK = (1 << 13) - 1,
-
- ATA_DFLAG_PIO = (1 << 13), /* device limited to PIO mode */
- ATA_DFLAG_NCQ_OFF = (1 << 14), /* device limited to non-NCQ mode */
- ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
- ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
- ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
- ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
- ATA_DFLAG_INIT_MASK = (1 << 19) - 1,
-
- ATA_DFLAG_NCQ_PRIO_ENABLED = (1 << 19), /* Priority cmds sent to dev */
+ ATA_DFLAG_CDL = (1 << 13), /* supports cmd duration limits */
+ ATA_DFLAG_CFG_MASK = (1 << 14) - 1,
+
+ ATA_DFLAG_PIO = (1 << 14), /* device limited to PIO mode */
+ ATA_DFLAG_NCQ_OFF = (1 << 15), /* device limited to non-NCQ mode */
+ ATA_DFLAG_SLEEPING = (1 << 16), /* device is sleeping */
+ ATA_DFLAG_DUBIOUS_XFER = (1 << 17), /* data transfer not verified */
+ ATA_DFLAG_NO_UNLOAD = (1 << 18), /* device doesn't support unload */
+ ATA_DFLAG_UNLOCK_HPA = (1 << 19), /* unlock HPA */
+ ATA_DFLAG_INIT_MASK = (1 << 20) - 1,
+
+ ATA_DFLAG_NCQ_PRIO_ENABLED = (1 << 20), /* Priority cmds sent to dev */
+ ATA_DFLAG_CDL_ENABLED = (1 << 21), /* cmd duration limits is enabled */
ATA_DFLAG_DETACH = (1 << 24),
ATA_DFLAG_DETACHED = (1 << 25),
ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
@@ -115,7 +117,8 @@ enum {
ATA_DFLAG_FEATURES_MASK = (ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \
ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \
- ATA_DFLAG_NCQ_PRIO | ATA_DFLAG_FUA),
+ ATA_DFLAG_NCQ_PRIO | ATA_DFLAG_FUA | \
+ ATA_DFLAG_CDL),
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
@@ -206,10 +209,12 @@ enum {
ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
+ ATA_QCFLAG_HAS_CDL = (1 << 8), /* qc has CDL a descriptor set */
ATA_QCFLAG_EH = (1 << 16), /* cmd aborted and owned by EH */
ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
+ ATA_QCFLAG_EH_SUCCESS_CMD = (1 << 19), /* EH should fetch sense for this successful cmd */
/* host set flags */
ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
@@ -308,8 +313,10 @@ enum {
ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
ATA_EH_ENABLE_LINK = (1 << 3),
ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
+ ATA_EH_GET_SUCCESS_SENSE = (1 << 6), /* Get sense data for successful cmd */
- ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
+ ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK |
+ ATA_EH_GET_SUCCESS_SENSE,
ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
ATA_EH_ENABLE_LINK,
@@ -709,6 +716,9 @@ struct ata_device {
/* Concurrent positioning ranges */
struct ata_cpr_log *cpr_log;
+ /* Command Duration Limits log support */
+ u8 cdl[ATA_LOG_CDL_SIZE];
+
/* error history */
int spdn_cnt;
/* ering is CLEAR_END, read comment above CLEAR_END */
@@ -860,6 +870,7 @@ struct ata_port {
struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
#endif
/* owned by EH */
+ u8 *ncq_sense_buf;
u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
};
@@ -1178,6 +1189,7 @@ extern int sata_link_hardreset(struct ata_link *link,
bool *online, int (*check_ready)(struct ata_link *));
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline);
+extern int ata_eh_read_sense_success_ncq_log(struct ata_link *link);
extern void ata_eh_analyze_ncq_error(struct ata_link *link);
#else
static inline const unsigned long *
@@ -1215,6 +1227,10 @@ static inline int sata_link_resume(struct ata_link *link,
{
return -EOPNOTSUPP;
}
+static inline int ata_eh_read_sense_success_ncq_log(struct ata_link *link)
+{
+ return -EOPNOTSUPP;
+}
static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { }
#endif
extern int sata_link_debounce(struct ata_link *link,
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index c2cb5f69635c..526def14e7fb 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -52,6 +52,11 @@ struct scsi_pointer {
#define SCMD_TAGGED (1 << 0)
#define SCMD_INITIALIZED (1 << 1)
#define SCMD_LAST (1 << 2)
+/*
+ * libata uses SCSI EH to fetch sense data for successful commands.
+ * SCSI EH should not overwrite scmd->result when SCMD_FORCE_EH_SUCCESS is set.
+ */
+#define SCMD_FORCE_EH_SUCCESS (1 << 3)
#define SCMD_FAIL_IF_RECOVERING (1 << 4)
/* flags preserved across unprep / reprep */
#define SCMD_PRESERVED_FLAGS (SCMD_INITIALIZED | SCMD_FAIL_IF_RECOVERING)
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index f10a008e5bfa..b2cdb078b7bd 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -218,6 +218,9 @@ struct scsi_device {
unsigned silence_suspend:1; /* Do not print runtime PM related messages */
unsigned no_vpd_size:1; /* No VPD size reported in header */
+ unsigned cdl_supported:1; /* Command duration limits supported */
+ unsigned cdl_enable:1; /* Enable/disable Command duration limits */
+
unsigned int queue_stopped; /* request queue is quiesced */
bool offline_already; /* Device offline message logged */
@@ -364,6 +367,8 @@ extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
extern void scsi_remove_device(struct scsi_device *);
extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
void scsi_attach_vpd(struct scsi_device *sdev);
+void scsi_cdl_check(struct scsi_device *sdev);
+int scsi_cdl_enable(struct scsi_device *sdev, bool enable);
extern struct scsi_device *scsi_device_from_queue(struct request_queue *q);
extern int __must_check scsi_device_get(struct scsi_device *);
@@ -421,10 +426,10 @@ extern int scsi_track_queue_full(struct scsi_device *, int);
extern int scsi_set_medium_removal(struct scsi_device *, char);
-extern int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
- unsigned char *buffer, int len, int timeout,
- int retries, struct scsi_mode_data *data,
- struct scsi_sense_hdr *);
+int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
+ int subpage, unsigned char *buffer, int len, int timeout,
+ int retries, struct scsi_mode_data *data,
+ struct scsi_sense_hdr *);
extern int scsi_mode_select(struct scsi_device *sdev, int pf, int sp,
unsigned char *buffer, int len, int timeout,
int retries, struct scsi_mode_data *data,
@@ -433,8 +438,9 @@ extern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout,
int retries, struct scsi_sense_hdr *sshdr);
extern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf,
int buf_len);
-extern int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer,
- unsigned int len, unsigned char opcode);
+int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer,
+ unsigned int len, unsigned char opcode,
+ unsigned short sa);
extern int scsi_device_set_state(struct scsi_device *sdev,
enum scsi_device_state state);
extern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type,
diff --git a/include/uapi/linux/ioprio.h b/include/uapi/linux/ioprio.h
index f70f2596a6bf..4c4806e8230b 100644
--- a/include/uapi/linux/ioprio.h
+++ b/include/uapi/linux/ioprio.h
@@ -17,7 +17,7 @@
((data) & IOPRIO_PRIO_MASK))
/*
- * These are the io priority groups as implemented by the BFQ and mq-deadline
+ * These are the io priority classes as implemented by the BFQ and mq-deadline
* schedulers. RT is the realtime class, it always gets premium service. For
* ATA disks supporting NCQ IO priority, RT class IOs will be processed using
* high priority NCQ commands. BE is the best-effort scheduling class, the
@@ -32,11 +32,20 @@ enum {
};
/*
- * The RT and BE priority classes both support up to 8 priority levels.
+ * The RT and BE priority classes both support up to 8 priority levels that
+ * can be specified using the lower 3-bits of the priority data.
*/
-#define IOPRIO_NR_LEVELS 8
-#define IOPRIO_BE_NR IOPRIO_NR_LEVELS
+#define IOPRIO_LEVEL_NR_BITS 3
+#define IOPRIO_NR_LEVELS (1 << IOPRIO_LEVEL_NR_BITS)
+#define IOPRIO_LEVEL_MASK (IOPRIO_NR_LEVELS - 1)
+#define IOPRIO_PRIO_LEVEL(ioprio) ((ioprio) & IOPRIO_LEVEL_MASK)
+#define IOPRIO_BE_NR IOPRIO_NR_LEVELS
+
+/*
+ * Possible values for the "which" argument of the ioprio_get() and
+ * ioprio_set() system calls (see "man ioprio_set").
+ */
enum {
IOPRIO_WHO_PROCESS = 1,
IOPRIO_WHO_PGRP,
@@ -44,9 +53,58 @@ enum {
};
/*
- * Fallback BE priority level.
+ * Fallback BE class priority level.
*/
#define IOPRIO_NORM 4
#define IOPRIO_BE_NORM IOPRIO_NORM
+/*
+ * The 10 bits between the priority class and the priority level are used to
+ * optionally define I/O hints for any combination of I/O priority class and
+ * level. Depending on the kernel configuration, I/O scheduler being used and
+ * the target I/O device being used, hints can influence how I/Os are processed
+ * without affecting the I/O scheduling ordering defined by the I/O priority
+ * class and level.
+ */
+#define IOPRIO_HINT_SHIFT IOPRIO_LEVEL_NR_BITS
+#define IOPRIO_HINT_NR_BITS 10
+#define IOPRIO_NR_HINTS (1 << IOPRIO_HINT_NR_BITS)
+#define IOPRIO_HINT_MASK (IOPRIO_NR_HINTS - 1)
+#define IOPRIO_PRIO_HINT(ioprio) \
+ (((ioprio) >> IOPRIO_HINT_SHIFT) & IOPRIO_HINT_MASK)
+
+/*
+ * Alternate macro for IOPRIO_PRIO_VALUE() to define an I/O priority with
+ * a class, level and hint.
+ */
+#define IOPRIO_PRIO_VALUE_HINT(class, level, hint) \
+ ((((class) & IOPRIO_CLASS_MASK) << IOPRIO_CLASS_SHIFT) | \
+ (((hint) & IOPRIO_HINT_MASK) << IOPRIO_HINT_SHIFT) | \
+ ((level) & IOPRIO_LEVEL_MASK))
+
+/*
+ * I/O hints.
+ */
+enum {
+ /* No hint */
+ IOPRIO_HINT_NONE = 0,
+
+ /*
+ * Device command duration limits: indicate to the device a desired
+ * duration limit for the commands that will be used to process an I/O.
+ * These will currently only be effective for SCSI and ATA devices that
+ * support the command duration limits feature. If this feature is
+ * enabled, then the commands issued to the device to process an I/O with
+ * one of these hints set will have the duration limit index (dld field)
+ * set to the value of the hint.
+ */
+ IOPRIO_HINT_DEV_DURATION_LIMIT_1 = 1,
+ IOPRIO_HINT_DEV_DURATION_LIMIT_2 = 2,
+ IOPRIO_HINT_DEV_DURATION_LIMIT_3 = 3,
+ IOPRIO_HINT_DEV_DURATION_LIMIT_4 = 4,
+ IOPRIO_HINT_DEV_DURATION_LIMIT_5 = 5,
+ IOPRIO_HINT_DEV_DURATION_LIMIT_6 = 6,
+ IOPRIO_HINT_DEV_DURATION_LIMIT_7 = 7,
+};
+
#endif /* _UAPI_LINUX_IOPRIO_H */
generated by cgit v1.2.3 (git 2.39.1) at 2026-01-11 22:32:49 +0000