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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Browse Source 
Pull SCSI updates from James Bottomley:
 "This patch is the usual mix of driver updates (srp, ipr, scsi_debug,
  NCR5380, fnic, 53c974, ses, wd719x, hpsa, megaraid_sas).

  Of those, wd7a9x is new and 53c974 is a rewrite of the old tmscsim
  driver and the extensive work by Finn Thain rewrites all the NCR5380
  based drivers.

  There's also extensive infrastructure updates: a new logging
  infrastructure for sense information and a rewrite of the tagged
  command queue API and an assortment of minor updates"

* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (183 commits)
  scsi: set fmt to NULL scsi_extd_sense_format() by default
  libsas: remove task_collector mode
  wd719x: remove dma_cache_sync call
  scsi_debug: add Report supported opcodes+tmfs; Compare and write
  scsi_debug: change SCSI command parser to table driven
  scsi_debug: add Capacity Changed Unit Attention
  scsi_debug: append inject error flags onto scsi_cmnd object
  scsi_debug: pinpoint invalid field in sense data
  wd719x: Add firmware documentation
  wd719x: Introduce Western Digital WD7193/7197/7296 PCI SCSI card driver
  eeprom-93cx6: Add (read-only) support for 8-bit mode
  esas2r: fix an oversight in setting return value
  esas2r: fix an error path in esas2r_ioctl_handler
  esas2r: fir error handling in do_fm_api
  scsi: add SPC-3 command definitions
  scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16
  scsi: remove scsi_driver owner field
  scsi: move scsi_dispatch_cmd to scsi_lib.c
  scsi: stop passing a gfp_mask argument down the command setup path
  scsi: remove scsi_next_command
  ...
This commit is contained in:
Linus Torvalds
2014-12-08 21:19:19 -08:00
parent 140dfc9299 096cbc35ea
commit f3f62a38ce
222 changed files with 8480 additions and 14815 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/blk-mq.h
+17
View File
@@ -167,6 +167,23 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
gfp_t gfp, bool reserved);
struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag);
enum {
BLK_MQ_UNIQUE_TAG_BITS = 16,
BLK_MQ_UNIQUE_TAG_MASK = (1 << BLK_MQ_UNIQUE_TAG_BITS) - 1,
};
u32 blk_mq_unique_tag(struct request *rq);
static inline u16 blk_mq_unique_tag_to_hwq(u32 unique_tag)
{
return unique_tag >> BLK_MQ_UNIQUE_TAG_BITS;
}
static inline u16 blk_mq_unique_tag_to_tag(u32 unique_tag)
{
return unique_tag & BLK_MQ_UNIQUE_TAG_MASK;
}
struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index);
struct blk_mq_hw_ctx *blk_mq_alloc_single_hw_queue(struct blk_mq_tag_set *, unsigned int, int);
include/linux/blkdev.h
-1
View File
@@ -1136,7 +1136,6 @@ static inline bool blk_needs_flush_plug(struct task_struct *tsk)
/*
* tag stuff
*/
#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED)
extern int blk_queue_start_tag(struct request_queue *, struct request *);
extern struct request *blk_queue_find_tag(struct request_queue *, int);
extern void blk_queue_end_tag(struct request_queue *, struct request *);
include/linux/eeprom_93cx6.h
+4
View File
@@ -75,6 +75,10 @@ extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,
const u8 word, u16 *data);
extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,
const u8 word, __le16 *data, const u16 words);
extern void eeprom_93cx6_readb(struct eeprom_93cx6 *eeprom,
const u8 byte, u8 *data);
extern void eeprom_93cx6_multireadb(struct eeprom_93cx6 *eeprom,
const u8 byte, u8 *data, const u16 bytes);
extern void eeprom_93cx6_wren(struct eeprom_93cx6 *eeprom, bool enable);
include/linux/libata.h
+2 -2
View File
@@ -1191,9 +1191,9 @@ extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
extern int ata_scsi_slave_config(struct scsi_device *sdev);
extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
int queue_depth, int reason);
int queue_depth);
extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
int queue_depth, int reason);
int queue_depth);
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
include/scsi/libfc.h
-2
View File
@@ -1105,8 +1105,6 @@ int fc_eh_abort(struct scsi_cmnd *);
int fc_eh_device_reset(struct scsi_cmnd *);
int fc_eh_host_reset(struct scsi_cmnd *);
int fc_slave_alloc(struct scsi_device *);
int fc_change_queue_depth(struct scsi_device *, int qdepth, int reason);
int fc_change_queue_type(struct scsi_device *, int tag_type);
/*
* ELS/CT interface
include/scsi/libiscsi.h
-2
View File
@@ -378,8 +378,6 @@ struct iscsi_host {
/*
* scsi host template
*/
extern int iscsi_change_queue_depth(struct scsi_device *sdev, int depth,
int reason);
extern int iscsi_eh_abort(struct scsi_cmnd *sc);
extern int iscsi_eh_recover_target(struct scsi_cmnd *sc);
extern int iscsi_eh_session_reset(struct scsi_cmnd *sc);
include/scsi/libsas.h
+2 -15
View File
@@ -365,12 +365,6 @@ struct asd_sas_phy {
struct scsi_core {
struct Scsi_Host *shost;
struct mutex task_queue_flush;
spinlock_t task_queue_lock;
struct list_head task_queue;
int task_queue_size;
struct task_struct *queue_thread;
};
struct sas_ha_event {
@@ -422,9 +416,6 @@ struct sas_ha_struct {
struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
int num_phys; /* must be set, gt 0, static */
/* The class calls this to send a task for execution. */
int lldd_max_execute_num;
int lldd_queue_size;
int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
* their siblings when forming wide ports */
@@ -612,7 +603,6 @@ struct sas_ssp_task {
struct sas_task {
struct domain_device *dev;
struct list_head list;
spinlock_t task_state_lock;
unsigned task_state_flags;
@@ -665,8 +655,7 @@ struct sas_domain_function_template {
int (*lldd_dev_found)(struct domain_device *);
void (*lldd_dev_gone)(struct domain_device *);
int (*lldd_execute_task)(struct sas_task *, int num,
gfp_t gfp_flags);
int (*lldd_execute_task)(struct sas_task *, gfp_t gfp_flags);
/* Task Management Functions. Must be called from process context. */
int (*lldd_abort_task)(struct sas_task *);
@@ -700,12 +689,10 @@ extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
int sas_set_phy_speed(struct sas_phy *phy,
struct sas_phy_linkrates *rates);
int sas_phy_reset(struct sas_phy *phy, int hard_reset);
int sas_queue_up(struct sas_task *task);
extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *);
extern int sas_target_alloc(struct scsi_target *);
extern int sas_slave_configure(struct scsi_device *);
extern int sas_change_queue_depth(struct scsi_device *, int new_depth,
int reason);
extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
extern int sas_change_queue_type(struct scsi_device *, int qt);
extern int sas_bios_param(struct scsi_device *,
struct block_device *,
include/scsi/scsi.h
+8 -4
View File
@@ -128,8 +128,10 @@ enum scsi_timeouts {
#define MOVE_MEDIUM 0xa5
#define EXCHANGE_MEDIUM 0xa6
#define READ_12 0xa8
#define SERVICE_ACTION_OUT_12 0xa9
#define WRITE_12 0xaa
#define READ_MEDIA_SERIAL_NUMBER 0xab
#define READ_MEDIA_SERIAL_NUMBER 0xab /* Obsolete with SPC-2 */
#define SERVICE_ACTION_IN_12 0xab
#define WRITE_VERIFY_12 0xae
#define VERIFY_12 0xaf
#define SEARCH_HIGH_12 0xb0
@@ -151,7 +153,9 @@ enum scsi_timeouts {
#define VERIFY_16 0x8f
#define SYNCHRONIZE_CACHE_16 0x91
#define WRITE_SAME_16 0x93
#define SERVICE_ACTION_IN 0x9e
#define SERVICE_ACTION_BIDIRECTIONAL 0x9d
#define SERVICE_ACTION_IN_16 0x9e
#define SERVICE_ACTION_OUT_16 0x9f
/* values for service action in */
#define SAI_READ_CAPACITY_16 0x10
#define SAI_GET_LBA_STATUS 0x12
@@ -165,8 +169,8 @@ enum scsi_timeouts {
#define MI_REPORT_ALIASES 0x0b
#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
#define MI_REPORT_PRIORITY 0x0e
#define MI_REPORT_TIMESTAMP 0x0f
#define MI_REPORT_PRIORITY 0x0e
#define MI_REPORT_TIMESTAMP 0x0f
#define MI_MANAGEMENT_PROTOCOL_IN 0x10
/* value for MI_REPORT_TARGET_PGS ext header */
#define MI_EXT_HDR_PARAM_FMT 0x20
include/scsi/scsi_cmnd.h
+5 -1
View File
@@ -53,6 +53,9 @@ struct scsi_pointer {
volatile int phase;
};
/* for scmd->flags */
#define SCMD_TAGGED (1 << 0)
struct scsi_cmnd {
struct scsi_device *device;
struct list_head list; /* scsi_cmnd participates in queue lists */
@@ -132,6 +135,7 @@ struct scsi_cmnd {
* to be at an address < 16Mb). */
int result; /* Status code from lower level driver */
int flags; /* Command flags */
unsigned char tag; /* SCSI-II queued command tag */
};
@@ -159,7 +163,7 @@ extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
size_t *offset, size_t *len);
extern void scsi_kunmap_atomic_sg(void *virt);
extern int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask);
extern int scsi_init_io(struct scsi_cmnd *cmd);
extern int scsi_dma_map(struct scsi_cmnd *cmd);
extern void scsi_dma_unmap(struct scsi_cmnd *cmd);
include/scsi/scsi_dbg.h
+16 -12
View File
@@ -2,23 +2,27 @@
#define _SCSI_SCSI_DBG_H
struct scsi_cmnd;
struct scsi_device;
struct scsi_sense_hdr;
extern void scsi_print_command(struct scsi_cmnd *);
extern void __scsi_print_command(unsigned char *);
extern void scsi_show_extd_sense(unsigned char, unsigned char);
extern void scsi_show_sense_hdr(struct scsi_sense_hdr *);
extern void scsi_print_sense_hdr(const char *, struct scsi_sense_hdr *);
extern void scsi_cmd_print_sense_hdr(struct scsi_cmnd *, const char *,
struct scsi_sense_hdr *);
extern void scsi_print_sense(char *, struct scsi_cmnd *);
extern void __scsi_print_sense(const char *name,
extern void __scsi_print_command(const unsigned char *, size_t);
extern void scsi_show_extd_sense(const struct scsi_device *, const char *,
unsigned char, unsigned char);
extern void scsi_show_sense_hdr(const struct scsi_device *, const char *,
const struct scsi_sense_hdr *);
extern void scsi_print_sense_hdr(const struct scsi_device *, const char *,
const struct scsi_sense_hdr *);
extern void scsi_print_sense(const struct scsi_cmnd *);
extern void __scsi_print_sense(const struct scsi_device *, const char *name,
const unsigned char *sense_buffer,
int sense_len);
extern void scsi_show_result(int);
extern void scsi_print_result(struct scsi_cmnd *);
extern void scsi_print_status(unsigned char);
extern void scsi_print_result(struct scsi_cmnd *, const char *, int);
extern const char *scsi_hostbyte_string(int);
extern const char *scsi_driverbyte_string(int);
extern const char *scsi_mlreturn_string(int);
extern const char *scsi_sense_key_string(unsigned char);
extern const char *scsi_extd_sense_format(unsigned char, unsigned char);
extern const char *scsi_extd_sense_format(unsigned char, unsigned char,
const char **);
#endif /* _SCSI_SCSI_DBG_H */
include/scsi/scsi_device.h
+11 -10
View File
@@ -141,7 +141,6 @@ struct scsi_device {
unsigned ppr:1; /* Device supports PPR messages */
unsigned tagged_supported:1; /* Supports SCSI-II tagged queuing */
unsigned simple_tags:1; /* simple queue tag messages are enabled */
unsigned ordered_tags:1;/* ordered queue tag messages are enabled */
unsigned was_reset:1; /* There was a bus reset on the bus for
* this device */
unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN
@@ -201,11 +200,6 @@ struct scsi_device {
unsigned long sdev_data[0];
} __attribute__((aligned(sizeof(unsigned long))));
struct scsi_dh_devlist {
char *vendor;
char *model;
};
typedef void (*activate_complete)(void *, int);
struct scsi_device_handler {
/* Used by the infrastructure */
@@ -214,9 +208,8 @@ struct scsi_device_handler {
/* Filled by the hardware handler */
struct module *module;
const char *name;
const struct scsi_dh_devlist *devlist;
int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *);
int (*attach)(struct scsi_device *);
struct scsi_dh_data *(*attach)(struct scsi_device *);
void (*detach)(struct scsi_device *);
int (*activate)(struct scsi_device *, activate_complete, void *);
int (*prep_fn)(struct scsi_device *, struct request *);
@@ -228,7 +221,6 @@ struct scsi_dh_data {
struct scsi_device_handler *scsi_dh;
struct scsi_device *sdev;
struct kref kref;
char buf[0];
};
#define to_scsi_device(d) \
@@ -244,6 +236,15 @@ struct scsi_dh_data {
#define sdev_dbg(sdev, fmt, a...) \
dev_dbg(&(sdev)->sdev_gendev, fmt, ##a)
/*
* like scmd_printk, but the device name is passed in
* as a string pointer
*/
#define sdev_prefix_printk(l, sdev, p, fmt, a...) \
(p) ? \
sdev_printk(l, sdev, "[%s] " fmt, p, ##a) : \
sdev_printk(l, sdev, fmt, ##a)
#define scmd_printk(prefix, scmd, fmt, a...) \
(scmd)->request->rq_disk ? \
sdev_printk(prefix, (scmd)->device, "[%s] " fmt, \
@@ -379,7 +380,7 @@ extern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *,
#define __shost_for_each_device(sdev, shost) \
list_for_each_entry((sdev), &((shost)->__devices), siblings)
extern void scsi_adjust_queue_depth(struct scsi_device *, int, int);
extern int scsi_change_queue_depth(struct scsi_device *, int);
extern int scsi_track_queue_full(struct scsi_device *, int);
extern int scsi_set_medium_removal(struct scsi_device *, char);
include/scsi/scsi_driver.h
-1
View File
@@ -9,7 +9,6 @@ struct scsi_cmnd;
struct scsi_device;
struct scsi_driver {
struct module *owner;
struct device_driver gendrv;
void (*rescan)(struct device *);
include/scsi/scsi_eh.h
+8 -16
View File
@@ -27,10 +27,10 @@ struct scsi_sense_hdr { /* See SPC-3 section 4.5 */
u8 additional_length; /* always 0 for fixed sense format */
};
static inline int scsi_sense_valid(struct scsi_sense_hdr *sshdr)
static inline bool scsi_sense_valid(const struct scsi_sense_hdr *sshdr)
{
if (!sshdr)
return 0;
return false;
return (sshdr->response_code & 0x70) == 0x70;
}
@@ -42,12 +42,12 @@ extern void scsi_eh_flush_done_q(struct list_head *done_q);
extern void scsi_report_bus_reset(struct Scsi_Host *, int);
extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
extern int scsi_block_when_processing_errors(struct scsi_device *);
extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
struct scsi_sense_hdr *sshdr);
extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd,
struct scsi_sense_hdr *sshdr);
extern bool scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
struct scsi_sense_hdr *sshdr);
extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
struct scsi_sense_hdr *sshdr);
static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr)
static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
{
return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
}
@@ -60,15 +60,7 @@ extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
/*
* Reset request from external source
*/
#define SCSI_TRY_RESET_DEVICE 1
#define SCSI_TRY_RESET_BUS 2
#define SCSI_TRY_RESET_HOST 3
#define SCSI_TRY_RESET_TARGET 4
extern int scsi_reset_provider(struct scsi_device *, int);
extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
struct scsi_eh_save {
/* saved state */
include/scsi/scsi_host.h
+20 -19
View File
@@ -46,12 +46,6 @@ struct blk_queue_tags;
#define DISABLE_CLUSTERING 0
#define ENABLE_CLUSTERING 1
enum {
SCSI_QDEPTH_DEFAULT, /* default requested change, e.g. from sysfs */
SCSI_QDEPTH_QFULL, /* scsi-ml requested due to queue full */
SCSI_QDEPTH_RAMP_UP, /* scsi-ml requested due to threshold event */
};
struct scsi_host_template {
struct module *module;
const char *name;
@@ -195,7 +189,7 @@ struct scsi_host_template {
* Things currently recommended to be handled at this time include:
*
* 1. Setting the device queue depth. Proper setting of this is
* described in the comments for scsi_adjust_queue_depth.
* described in the comments for scsi_change_queue_depth.
* 2. Determining if the device supports the various synchronous
* negotiation protocols. The device struct will already have
* responded to INQUIRY and the results of the standard items
@@ -281,7 +275,7 @@ struct scsi_host_template {
*
* Status: OPTIONAL
*/
int (* change_queue_depth)(struct scsi_device *, int, int);
int (* change_queue_depth)(struct scsi_device *, int);
/*
* Fill in this function to allow the changing of tag types
@@ -421,6 +415,16 @@ struct scsi_host_template {
*/
unsigned char present;
/*
* Let the block layer assigns tags to all commands.
*/
unsigned use_blk_tags:1;
/*
* Track QUEUE_FULL events and reduce queue depth on demand.
*/
unsigned track_queue_depth:1;
/*
* This specifies the mode that a LLD supports.
*/
@@ -451,11 +455,6 @@ struct scsi_host_template {
*/
unsigned skip_settle_delay:1;
/*
* True if we are using ordered write support.
*/
unsigned ordered_tag:1;
/* True if the controller does not support WRITE SAME */
unsigned no_write_same:1;
@@ -638,6 +637,14 @@ struct Scsi_Host {
short unsigned int sg_prot_tablesize;
unsigned int max_sectors;
unsigned long dma_boundary;
/*
* In scsi-mq mode, the number of hardware queues supported by the LLD.
*
* Note: it is assumed that each hardware queue has a queue depth of
* can_queue. In other words, the total queue depth per host
* is nr_hw_queues * can_queue.
*/
unsigned nr_hw_queues;
/*
* Used to assign serial numbers to the cmds.
* Protected by the host lock.
@@ -647,7 +654,6 @@ struct Scsi_Host {
unsigned active_mode:2;
unsigned unchecked_isa_dma:1;
unsigned use_clustering:1;
unsigned use_blk_tcq:1;
/*
* Host has requested that no further requests come through for the
@@ -662,11 +668,6 @@ struct Scsi_Host {
*/
unsigned reverse_ordering:1;
/*
* Ordered write support
*/
unsigned ordered_tag:1;
/* Task mgmt function in progress */
unsigned tmf_in_progress:1;
include/scsi/scsi_ioctl.h
+2 -2
View File
@@ -40,9 +40,9 @@ typedef struct scsi_fctargaddress {
unsigned char host_wwn[8]; // include NULL term.
} Scsi_FCTargAddress;
int scsi_ioctl_block_when_processing_errors(struct scsi_device *sdev,
int cmd, bool ndelay);
extern int scsi_ioctl(struct scsi_device *, int, void __user *);
extern int scsi_nonblockable_ioctl(struct scsi_device *sdev, int cmd,
void __user *arg, int ndelay);
#endif /* __KERNEL__ */
#endif /* _SCSI_IOCTL_H */
include/scsi/scsi_tcq.h
+13 -74
View File
@@ -16,20 +16,16 @@
#ifdef CONFIG_BLOCK
int scsi_change_queue_type(struct scsi_device *sdev, int tag_type);
/**
* scsi_get_tag_type - get the type of tag the device supports
* @sdev: the scsi device
*
* Notes:
* If the drive only supports simple tags, returns MSG_SIMPLE_TAG
* if it supports all tag types, returns MSG_ORDERED_TAG.
*/
static inline int scsi_get_tag_type(struct scsi_device *sdev)
{
if (!sdev->tagged_supported)
return 0;
if (sdev->ordered_tags)
return MSG_ORDERED_TAG;
if (sdev->simple_tags)
return MSG_SIMPLE_TAG;
return 0;
@@ -39,90 +35,33 @@ static inline void scsi_set_tag_type(struct scsi_device *sdev, int tag)
{
switch (tag) {
case MSG_ORDERED_TAG:
sdev->ordered_tags = 1;
/* fall through */
case MSG_SIMPLE_TAG:
sdev->simple_tags = 1;
break;
case 0:
/* fall through */
default:
sdev->ordered_tags = 0;
sdev->simple_tags = 0;
break;
}
}
/**
* scsi_activate_tcq - turn on tag command queueing
* @SDpnt: device to turn on TCQ for
* @depth: queue depth
*
* Notes:
* Eventually, I hope depth would be the maximum depth
* the device could cope with and the real queue depth
* would be adjustable from 0 to depth.
**/
static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
{
if (!sdev->tagged_supported)
return;
if (shost_use_blk_mq(sdev->host))
queue_flag_set_unlocked(QUEUE_FLAG_QUEUED, sdev->request_queue);
else if (!blk_queue_tagged(sdev->request_queue))
blk_queue_init_tags(sdev->request_queue, depth,
sdev->host->bqt);
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
}
/**
* scsi_deactivate_tcq - turn off tag command queueing
* @SDpnt: device to turn off TCQ for
**/
static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
{
if (blk_queue_tagged(sdev->request_queue))
blk_queue_free_tags(sdev->request_queue);
scsi_adjust_queue_depth(sdev, 0, depth);
}
/**
* scsi_populate_tag_msg - place a tag message in a buffer
* @SCpnt: pointer to the Scsi_Cmnd for the tag
* @msg: pointer to the area to place the tag
*
* Notes:
* designed to create the correct type of tag message for the
* particular request. Returns the size of the tag message.
* May return 0 if TCQ is disabled for this device.
**/
static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg)
{
struct request *req = cmd->request;
if (blk_rq_tagged(req)) {
*msg++ = MSG_SIMPLE_TAG;
*msg++ = req->tag;
return 2;
}
return 0;
}
static inline struct scsi_cmnd *scsi_mq_find_tag(struct Scsi_Host *shost,
unsigned int hw_ctx, int tag)
int unique_tag)
{
struct request *req;
u16 hwq = blk_mq_unique_tag_to_hwq(unique_tag);
struct request *req = NULL;
req = blk_mq_tag_to_rq(shost->tag_set.tags[hw_ctx], tag);
if (hwq < shost->tag_set.nr_hw_queues)
req = blk_mq_tag_to_rq(shost->tag_set.tags[hwq],
blk_mq_unique_tag_to_tag(unique_tag));
return req ? (struct scsi_cmnd *)req->special : NULL;
}
/**
* scsi_find_tag - find a tagged command by device
* @SDpnt: pointer to the ScSI device
* @tag: the tag number
* @tag: tag generated by blk_mq_unique_tag()
*
* Notes:
* Only works with tags allocated by the generic blk layer.
@@ -133,9 +72,9 @@ static inline struct scsi_cmnd *scsi_find_tag(struct scsi_device *sdev, int tag)
if (tag != SCSI_NO_TAG) {
if (shost_use_blk_mq(sdev->host))
return scsi_mq_find_tag(sdev->host, 0, tag);
return scsi_mq_find_tag(sdev->host, tag);
req = blk_queue_find_tag(sdev->request_queue, tag);
req = blk_queue_find_tag(sdev->request_queue, tag);
return req ? (struct scsi_cmnd *)req->special : NULL;
}
@@ -174,7 +113,7 @@ static inline int scsi_init_shared_tag_map(struct Scsi_Host *shost, int depth)
/**
* scsi_host_find_tag - find the tagged command by host
* @shost: pointer to scsi_host
* @tag: tag of the scsi_cmnd
* @tag: tag generated by blk_mq_unique_tag()
*
* Notes:
* Only works with tags allocated by the generic blk layer.
@@ -186,7 +125,7 @@ static inline struct scsi_cmnd *scsi_host_find_tag(struct Scsi_Host *shost,
if (tag != SCSI_NO_TAG) {
if (shost_use_blk_mq(shost))
return scsi_mq_find_tag(shost, 0, tag);
return scsi_mq_find_tag(shost, tag);
req = blk_map_queue_find_tag(shost->bqt, tag);
return req ? (struct scsi_cmnd *)req->special : NULL;
}
include/scsi/scsi_transport_spi.h
+1
View File
@@ -157,5 +157,6 @@ int spi_populate_width_msg(unsigned char *msg, int width);
int spi_populate_sync_msg(unsigned char *msg, int period, int offset);
int spi_populate_ppr_msg(unsigned char *msg, int period, int offset, int width,
int options);
int spi_populate_tag_msg(unsigned char *msg, struct scsi_cmnd *cmd);
#endif /* SCSI_TRANSPORT_SPI_H */
include/scsi/sg.h
+4 -1
View File
@@ -164,12 +164,15 @@ typedef struct sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
/* Returns -EBUSY if occupied. 3rd argument pointer to int (see next) */
#define SG_SCSI_RESET 0x2284
/* Associated values that can be given to SG_SCSI_RESET follow */
/* Associated values that can be given to SG_SCSI_RESET follow.
* SG_SCSI_RESET_NO_ESCALATE may be OR-ed to the _DEVICE, _TARGET, _BUS
* or _HOST reset value so only that action is attempted. */
#define SG_SCSI_RESET_NOTHING 0
#define SG_SCSI_RESET_DEVICE 1
#define SG_SCSI_RESET_BUS 2
#define SG_SCSI_RESET_HOST 3
#define SG_SCSI_RESET_TARGET 4
#define SG_SCSI_RESET_NO_ESCALATE 0x100
/* synchronous SCSI command ioctl, (only in version 3 interface) */
#define SG_IO 0x2285 /* similar effect as write() followed by read() */
include/trace/events/scsi.h
+1 -1
View File
@@ -94,7 +94,7 @@
scsi_opcode_name(WRITE_16), \
scsi_opcode_name(VERIFY_16), \
scsi_opcode_name(WRITE_SAME_16), \
scsi_opcode_name(SERVICE_ACTION_IN), \
scsi_opcode_name(SERVICE_ACTION_IN_16), \
scsi_opcode_name(SAI_READ_CAPACITY_16), \
scsi_opcode_name(SAI_GET_LBA_STATUS), \
scsi_opcode_name(MI_REPORT_TARGET_PGS), \
include/trace/events/target.h
+1 -1
View File
@@ -96,7 +96,7 @@
scsi_opcode_name(WRITE_16), \
scsi_opcode_name(VERIFY_16), \
scsi_opcode_name(WRITE_SAME_16), \
scsi_opcode_name(SERVICE_ACTION_IN), \
scsi_opcode_name(SERVICE_ACTION_IN_16), \
scsi_opcode_name(SAI_READ_CAPACITY_16), \
scsi_opcode_name(SAI_GET_LBA_STATUS), \
scsi_opcode_name(MI_REPORT_TARGET_PGS), \