From c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Fri, 17 Dec 2010 11:11:26 -0800 Subject: [SCSI] target: Add LIO target core v4.0.0-rc6 LIO target is a full featured in-kernel target framework with the following feature set: High-performance, non-blocking, multithreaded architecture with SIMD support. Advanced SCSI feature set: * Persistent Reservations (PRs) * Asymmetric Logical Unit Assignment (ALUA) * Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S) * Full Error Recovery (ERL=0,1,2) * Active/active task migration and session continuation (ERL=2) * Thin LUN provisioning (UNMAP and WRITE_SAMExx) Multiprotocol target plugins Storage media independence: * Virtualization of all storage media; transparent mapping of IO to LUNs * No hard limits on number of LUNs per Target; maximum LUN size ~750 TB * Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc. Standards compliance: * Full compliance with IETF (RFC 3720) * Full implementation of SPC-4 PRs and ALUA Significant code cleanups done by Christoph Hellwig. [jejb: fix up for new block bdev exclusive interface. Minor fixes from Randy Dunlap and Dan Carpenter.] Signed-off-by: Nicholas A. Bellinger Signed-off-by: James Bottomley --- drivers/target/target_core_ua.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 drivers/target/target_core_ua.h (limited to 'drivers/target/target_core_ua.h') diff --git a/drivers/target/target_core_ua.h b/drivers/target/target_core_ua.h new file mode 100644 index 000000000000..6e6b03460a1a --- /dev/null +++ b/drivers/target/target_core_ua.h @@ -0,0 +1,36 @@ +#ifndef TARGET_CORE_UA_H + +/* + * From spc4r17, Table D.1: ASC and ASCQ Assignement + */ +#define ASCQ_29H_POWER_ON_RESET_OR_BUS_DEVICE_RESET_OCCURED 0x00 +#define ASCQ_29H_POWER_ON_OCCURRED 0x01 +#define ASCQ_29H_SCSI_BUS_RESET_OCCURED 0x02 +#define ASCQ_29H_BUS_DEVICE_RESET_FUNCTION_OCCURRED 0x03 +#define ASCQ_29H_DEVICE_INTERNAL_RESET 0x04 +#define ASCQ_29H_TRANSCEIVER_MODE_CHANGED_TO_SINGLE_ENDED 0x05 +#define ASCQ_29H_TRANSCEIVER_MODE_CHANGED_TO_LVD 0x06 +#define ASCQ_29H_NEXUS_LOSS_OCCURRED 0x07 + +#define ASCQ_2AH_PARAMETERS_CHANGED 0x00 +#define ASCQ_2AH_MODE_PARAMETERS_CHANGED 0x01 +#define ASCQ_2AH_LOG_PARAMETERS_CHANGED 0x02 +#define ASCQ_2AH_RESERVATIONS_PREEMPTED 0x03 +#define ASCQ_2AH_RESERVATIONS_RELEASED 0x04 +#define ASCQ_2AH_REGISTRATIONS_PREEMPTED 0x05 +#define ASCQ_2AH_ASYMMETRIC_ACCESS_STATE_CHANGED 0x06 +#define ASCQ_2AH_IMPLICT_ASYMMETRIC_ACCESS_STATE_TRANSITION_FAILED 0x07 +#define ASCQ_2AH_PRIORITY_CHANGED 0x08 + +#define ASCQ_2CH_PREVIOUS_RESERVATION_CONFLICT_STATUS 0x09 + +extern struct kmem_cache *se_ua_cache; + +extern int core_scsi3_ua_check(struct se_cmd *, unsigned char *); +extern int core_scsi3_ua_allocate(struct se_node_acl *, u32, u8, u8); +extern void core_scsi3_ua_release_all(struct se_dev_entry *); +extern void core_scsi3_ua_for_check_condition(struct se_cmd *, u8 *, u8 *); +extern int core_scsi3_ua_clear_for_request_sense(struct se_cmd *, + u8 *, u8 *); + +#endif /* TARGET_CORE_UA_H */ -- cgit