^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <target/target_core_base.h> /* struct se_cmd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define TCM_LOOP_VERSION "v2.1-rc2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define TL_WWN_ADDR_LEN 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define TL_TPGS_PER_HBA 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) struct tcm_loop_cmd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) /* State of Linux/SCSI CDB+Data descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) u32 sc_cmd_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /* Tagged command queueing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) u32 sc_cmd_tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* Pointer to the CDB+Data descriptor from Linux/SCSI subsystem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct scsi_cmnd *sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* The TCM I/O descriptor that is accessed via container_of() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct se_cmd tl_se_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct work_struct work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct completion tmr_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* Sense buffer that will be mapped into outgoing status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct tcm_loop_nexus {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Pointer to TCM session for I_T Nexus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct se_session *se_sess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define TCM_TRANSPORT_ONLINE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define TCM_TRANSPORT_OFFLINE 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct tcm_loop_tpg {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) unsigned short tl_tpgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) unsigned short tl_transport_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) enum target_prot_type tl_fabric_prot_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) atomic_t tl_tpg_port_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct se_portal_group tl_se_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct tcm_loop_nexus *tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct tcm_loop_hba {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u8 tl_proto_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) unsigned char tl_wwn_address[TL_WWN_ADDR_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct se_hba_s *se_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct se_lun *tl_hba_lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct se_port *tl_hba_lun_sep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct device dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct Scsi_Host *sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct se_wwn tl_hba_wwn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };