diff options
Diffstat (limited to 'drivers/scsi/sd.h')
| -rw-r--r-- | drivers/scsi/sd.h | 110 |
1 files changed, 95 insertions, 15 deletions
diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 95b9f06534d..620871efbf0 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -9,22 +9,23 @@ #define SD_MAJORS 16 /* - * This is limited by the naming scheme enforced in sd_probe, - * add another character to it if you really need more disks. - */ -#define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26) - -/* * Time out in seconds for disks and Magneto-opticals (which are slower). */ #define SD_TIMEOUT (30 * HZ) #define SD_MOD_TIMEOUT (75 * HZ) +/* + * Flush timeout is a multiplier over the standard device timeout which is + * user modifiable via sysfs but initially set to SD_TIMEOUT + */ +#define SD_FLUSH_TIMEOUT_MULTIPLIER 2 +#define SD_WRITE_SAME_TIMEOUT (120 * HZ) /* * Number of allowed retries */ #define SD_MAX_RETRIES 5 #define SD_PASSTHROUGH_RETRIES 1 +#define SD_MAX_MEDIUM_TIMEOUTS 2 /* * Size of the initial data buffer for mode and read capacity data @@ -37,22 +38,58 @@ */ #define SD_LAST_BUGGY_SECTORS 8 +enum { + SD_EXT_CDB_SIZE = 32, /* Extended CDB size */ + SD_MEMPOOL_SIZE = 2, /* CDB pool size */ +}; + +enum { + SD_MAX_WS10_BLOCKS = 0xffff, + SD_MAX_WS16_BLOCKS = 0x7fffff, +}; + +enum { + SD_LBP_FULL = 0, /* Full logical block provisioning */ + SD_LBP_UNMAP, /* Use UNMAP command */ + SD_LBP_WS16, /* Use WRITE SAME(16) with UNMAP bit */ + SD_LBP_WS10, /* Use WRITE SAME(10) with UNMAP bit */ + SD_LBP_ZERO, /* Use WRITE SAME(10) with zero payload */ + SD_LBP_DISABLE, /* Discard disabled due to failed cmd */ +}; + struct scsi_disk { struct scsi_driver *driver; /* always &sd_template */ struct scsi_device *device; struct device dev; struct gendisk *disk; - unsigned int openers; /* protected by BKL for now, yuck */ + atomic_t openers; sector_t capacity; /* size in 512-byte sectors */ + u32 max_ws_blocks; + u32 max_unmap_blocks; + u32 unmap_granularity; + u32 unmap_alignment; u32 index; + unsigned int physical_block_size; + unsigned int max_medium_access_timeouts; + unsigned int medium_access_timed_out; u8 media_present; u8 write_prot; u8 protection_type;/* Data Integrity Field */ - unsigned previous_state : 1; + u8 provisioning_mode; unsigned ATO : 1; /* state of disk ATO bit */ + unsigned cache_override : 1; /* temp override of WCE,RCD */ unsigned WCE : 1; /* state of disk WCE bit */ unsigned RCD : 1; /* state of disk RCD bit, unused */ unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ + unsigned first_scan : 1; + unsigned lbpme : 1; + unsigned lbprz : 1; + unsigned lbpu : 1; + unsigned lbpws : 1; + unsigned lbpws10 : 1; + unsigned lbpvpd : 1; + unsigned ws10 : 1; + unsigned ws16 : 1; }; #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev) @@ -67,6 +104,44 @@ static inline struct scsi_disk *scsi_disk(struct gendisk *disk) (sdsk)->disk->disk_name, ##a) : \ sdev_printk(prefix, (sdsk)->device, fmt, ##a) +#define sd_first_printk(prefix, sdsk, fmt, a...) \ + do { \ + if ((sdkp)->first_scan) \ + sd_printk(prefix, sdsk, fmt, ##a); \ + } while (0) + +static inline int scsi_medium_access_command(struct scsi_cmnd *scmd) +{ + switch (scmd->cmnd[0]) { + case READ_6: + case READ_10: + case READ_12: + case READ_16: + case SYNCHRONIZE_CACHE: + case VERIFY: + case VERIFY_12: + case VERIFY_16: + case WRITE_6: + case WRITE_10: + case WRITE_12: + case WRITE_16: + case WRITE_SAME: + case WRITE_SAME_16: + case UNMAP: + return 1; + case VARIABLE_LENGTH_CMD: + switch (scmd->cmnd[9]) { + case READ_32: + case VERIFY_32: + case WRITE_32: + case WRITE_SAME_32: + return 1; + } + } + + return 0; +} + /* * A DIF-capable target device can be formatted with different * protection schemes. Currently 0 through 3 are defined: @@ -97,19 +172,24 @@ struct sd_dif_tuple { __be32 ref_tag; /* Target LBA or indirect LBA */ }; -#if defined(CONFIG_BLK_DEV_INTEGRITY) +#ifdef CONFIG_BLK_DEV_INTEGRITY -extern void sd_dif_op(struct scsi_cmnd *, unsigned int, unsigned int); extern void sd_dif_config_host(struct scsi_disk *); -extern int sd_dif_prepare(struct request *rq, sector_t, unsigned int); +extern void sd_dif_prepare(struct request *rq, sector_t, unsigned int); extern void sd_dif_complete(struct scsi_cmnd *, unsigned int); #else /* CONFIG_BLK_DEV_INTEGRITY */ -#define sd_dif_op(a, b, c) do { } while (0) -#define sd_dif_config_host(a) do { } while (0) -#define sd_dif_prepare(a, b, c) (0) -#define sd_dif_complete(a, b) (0) +static inline void sd_dif_config_host(struct scsi_disk *disk) +{ +} +static inline int sd_dif_prepare(struct request *rq, sector_t s, unsigned int a) +{ + return 0; +} +static inline void sd_dif_complete(struct scsi_cmnd *cmd, unsigned int a) +{ +} #endif /* CONFIG_BLK_DEV_INTEGRITY */ |