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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-23 15:55:44 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-23 15:55:44 -0700 |
commit | acd53127c4adbd34570b221e7ea1f7fc94aea923 (patch) | |
tree | 5e24adc30e91db14bc47ef4287319f38eb1b2108 /include/scsi/scsi_common.h | |
parent | f9d1b5a31ab02208e29631756630739175cdaa02 (diff) | |
parent | c8806b6c9e824f47726f2a9b7fbbe7ebf19306fa (diff) | |
download | op-kernel-dev-acd53127c4adbd34570b221e7ea1f7fc94aea923.zip op-kernel-dev-acd53127c4adbd34570b221e7ea1f7fc94aea923.tar.gz |
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is the usual grab bag of driver updates (lpfc, hpsa,
megaraid_sas, cxgbi, be2iscsi) plus an assortment of minor updates.
There is also one new driver: the Cisco snic. The advansys driver has
been rewritten to get rid of the warning about converting it to the
DMA API, the tape statistics patch got in and finally, there's a
resuffle of SCSI header files to separate more cleanly initiator from
target mode (and better share the common definitions)"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (156 commits)
snic: driver for Cisco SCSI HBA
qla2xxx: Fix indentation
qla2xxx: Comment out unreachable code
fusion: remove dead MTRR code
advansys: fix compilation errors and warnings when CONFIG_PCI is not set
mptsas: fix depth param in scsi_track_queue_full
megaraid: fix irq setup process regression
lpfc: Update version to 10.7.0.0 for upstream patch set.
lpfc: Fix to drop PLOGIs from fabric node till LOGO processing completes
lpfc: Fix scsi task management error message.
lpfc: Fix cq_id masking problem.
lpfc: Fix scsi prep dma buf error.
lpfc: Add support for using block multi-queue
lpfc: Devices are not discovered during takeaway/giveback testing
lpfc: Fix vport deletion failure.
lpfc: Check for active portpeerbeacon.
lpfc: Update driver version for upstream patch set 10.6.0.1.
lpfc: Change buffer pool empty message to miscellaneous category
lpfc: Fix incorrect log message reported for empty FCF record.
lpfc: Fix rport leak.
...
Diffstat (limited to 'include/scsi/scsi_common.h')
-rw-r--r-- | include/scsi/scsi_common.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/scsi/scsi_common.h b/include/scsi/scsi_common.h new file mode 100644 index 0000000..676b03b --- /dev/null +++ b/include/scsi/scsi_common.h @@ -0,0 +1,64 @@ +/* + * Functions used by both the SCSI initiator code and the SCSI target code. + */ + +#ifndef _SCSI_COMMON_H_ +#define _SCSI_COMMON_H_ + +#include <linux/types.h> +#include <scsi/scsi_proto.h> + +static inline unsigned +scsi_varlen_cdb_length(const void *hdr) +{ + return ((struct scsi_varlen_cdb_hdr *)hdr)->additional_cdb_length + 8; +} + +extern const unsigned char scsi_command_size_tbl[8]; +#define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7] + +static inline unsigned +scsi_command_size(const unsigned char *cmnd) +{ + return (cmnd[0] == VARIABLE_LENGTH_CMD) ? + scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]); +} + +/* Returns a human-readable name for the device */ +extern const char *scsi_device_type(unsigned type); + +extern void int_to_scsilun(u64, struct scsi_lun *); +extern u64 scsilun_to_int(struct scsi_lun *); + +/* + * This is a slightly modified SCSI sense "descriptor" format header. + * The addition is to allow the 0x70 and 0x71 response codes. The idea + * is to place the salient data from either "fixed" or "descriptor" sense + * format into one structure to ease application processing. + * + * The original sense buffer should be kept around for those cases + * in which more information is required (e.g. the LBA of a MEDIUM ERROR). + */ +struct scsi_sense_hdr { /* See SPC-3 section 4.5 */ + u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */ + u8 sense_key; + u8 asc; + u8 ascq; + u8 byte4; + u8 byte5; + u8 byte6; + u8 additional_length; /* always 0 for fixed sense format */ +}; + +static inline bool scsi_sense_valid(const struct scsi_sense_hdr *sshdr) +{ + if (!sshdr) + return false; + + return (sshdr->response_code & 0x70) == 0x70; +} + +extern bool scsi_normalize_sense(const u8 *sense_buffer, int sb_len, + struct scsi_sense_hdr *sshdr); + +#endif /* _SCSI_COMMON_H_ */ |