[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 <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/target/target_core_pscsi.h b/drivers/target/target_core_pscsi.h
new file mode 100644
index 0000000..a4cd5d3
--- /dev/null
+++ b/drivers/target/target_core_pscsi.h
@@ -0,0 +1,65 @@
+#ifndef TARGET_CORE_PSCSI_H
+#define TARGET_CORE_PSCSI_H
+
+#define PSCSI_VERSION "v4.0"
+#define PSCSI_VIRTUAL_HBA_DEPTH 2048
+
+/* used in pscsi_find_alloc_len() */
+#ifndef INQUIRY_DATA_SIZE
+#define INQUIRY_DATA_SIZE 0x24
+#endif
+
+/* used in pscsi_add_device_to_list() */
+#define PSCSI_DEFAULT_QUEUEDEPTH 1
+
+#define PS_RETRY 5
+#define PS_TIMEOUT_DISK (15*HZ)
+#define PS_TIMEOUT_OTHER (500*HZ)
+
+#include <linux/device.h>
+#include <scsi/scsi_driver.h>
+#include <scsi/scsi_device.h>
+#include <linux/kref.h>
+#include <linux/kobject.h>
+
+struct pscsi_plugin_task {
+ struct se_task pscsi_task;
+ unsigned char *pscsi_cdb;
+ unsigned char __pscsi_cdb[TCM_MAX_COMMAND_SIZE];
+ unsigned char pscsi_sense[SCSI_SENSE_BUFFERSIZE];
+ int pscsi_direction;
+ int pscsi_result;
+ u32 pscsi_resid;
+ struct request *pscsi_req;
+} ____cacheline_aligned;
+
+#define PDF_HAS_CHANNEL_ID 0x01
+#define PDF_HAS_TARGET_ID 0x02
+#define PDF_HAS_LUN_ID 0x04
+#define PDF_HAS_VPD_UNIT_SERIAL 0x08
+#define PDF_HAS_VPD_DEV_IDENT 0x10
+#define PDF_HAS_VIRT_HOST_ID 0x20
+
+struct pscsi_dev_virt {
+ int pdv_flags;
+ int pdv_host_id;
+ int pdv_channel_id;
+ int pdv_target_id;
+ int pdv_lun_id;
+ struct block_device *pdv_bd;
+ struct scsi_device *pdv_sd;
+ struct se_hba *pdv_se_hba;
+} ____cacheline_aligned;
+
+typedef enum phv_modes {
+ PHV_VIRUTAL_HOST_ID,
+ PHV_LLD_SCSI_HOST_NO
+} phv_modes_t;
+
+struct pscsi_hba_virt {
+ int phv_host_id;
+ phv_modes_t phv_mode;
+ struct Scsi_Host *phv_lld_host;
+} ____cacheline_aligned;
+
+#endif /*** TARGET_CORE_PSCSI_H ***/