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Subject[PATCH v2 04/11] firewire-sbp-target: Add sbp_base.h header
Date
This header contains defines and structures that are common to many of
the modules of the target code. This includes SBP-2 protocol structures
and constants as well as a few structs for setting up the target, LUN
login information and session setup.

Signed-off-by: Chris Boot <bootc@bootc.net>
Cc: Andy Grover <agrover@redhat.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: Nicholas A. Bellinger <nab@linux-iscsi.org>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
---
drivers/target/sbp/sbp_base.h | 204 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 204 insertions(+), 0 deletions(-)
create mode 100644 drivers/target/sbp/sbp_base.h
diff --git a/drivers/target/sbp/sbp_base.h b/drivers/target/sbp/sbp_base.h
new file mode 100644
index 0000000..d39b743
--- /dev/null
+++ b/drivers/target/sbp/sbp_base.h
@@ -0,0 +1,204 @@
+
+#define SBP_VERSION "v0.1"
+#define SBP_NAMELEN 32
+
+#define SBP_ORB_FETCH_SIZE 8
+
+#define MANAGEMENT_AGENT_STATE_IDLE 0
+#define MANAGEMENT_AGENT_STATE_BUSY 1
+
+#define ORB_NOTIFY(v) (((v) >> 31) & 0x01)
+#define ORB_REQUEST_FORMAT(v) (((v) >> 29) & 0x03)
+
+#define MANAGEMENT_ORB_FUNCTION(v) (((v) >> 16) & 0x0f)
+
+#define MANAGEMENT_ORB_FUNCTION_LOGIN 0x0
+#define MANAGEMENT_ORB_FUNCTION_QUERY_LOGINS 0x1
+#define MANAGEMENT_ORB_FUNCTION_RECONNECT 0x3
+#define MANAGEMENT_ORB_FUNCTION_SET_PASSWORD 0x4
+#define MANAGEMENT_ORB_FUNCTION_LOGOUT 0x7
+#define MANAGEMENT_ORB_FUNCTION_ABORT_TASK 0xb
+#define MANAGEMENT_ORB_FUNCTION_ABORT_TASK_SET 0xc
+#define MANAGEMENT_ORB_FUNCTION_LOGICAL_UNIT_RESET 0xe
+#define MANAGEMENT_ORB_FUNCTION_TARGET_RESET 0xf
+
+#define LOGIN_ORB_EXCLUSIVE(v) (((v) >> 28) & 0x01)
+#define LOGIN_ORB_RESERVED(v) (((v) >> 24) & 0x0f)
+#define LOGIN_ORB_RECONNECT(v) (((v) >> 20) & 0x0f)
+#define LOGIN_ORB_LUN(v) (((v) >> 0) & 0xffff)
+#define LOGIN_ORB_PASSWORD_LENGTH(v) (((v) >> 16) & 0xffff)
+#define LOGIN_ORB_RESPONSE_LENGTH(v) (((v) >> 0) & 0xffff)
+
+#define RECONNECT_ORB_LOGIN_ID(v) (((v) >> 0) & 0xffff)
+#define LOGOUT_ORB_LOGIN_ID(v) (((v) >> 0) & 0xffff)
+
+#define CMDBLK_ORB_DIRECTION(v) (((v) >> 27) & 0x01)
+#define CMDBLK_ORB_SPEED(v) (((v) >> 24) & 0x07)
+#define CMDBLK_ORB_MAX_PAYLOAD(v) (((v) >> 20) & 0x0f)
+#define CMDBLK_ORB_PG_TBL_PRESENT(v) (((v) >> 19) & 0x01)
+#define CMDBLK_ORB_PG_SIZE(v) (((v) >> 16) & 0x07)
+#define CMDBLK_ORB_DATA_SIZE(v) (((v) >> 0) & 0xffff)
+
+#define STATUS_BLOCK_SRC(v) (((v) & 0x03) << 30)
+#define STATUS_BLOCK_RESP(v) (((v) & 0x03) << 28)
+#define STATUS_BLOCK_DEAD(v) (((v) ? 1 : 0) << 27)
+#define STATUS_BLOCK_LEN(v) (((v) & 0x07) << 24)
+#define STATUS_BLOCK_SBP_STATUS(v) (((v) & 0xff) << 16)
+#define STATUS_BLOCK_ORB_OFFSET_HIGH(v) (((v) & 0xffff) << 0)
+
+#define STATUS_SRC_ORB_CONTINUING 0
+#define STATUS_SRC_ORB_FINISHED 1
+#define STATUS_SRC_UNSOLICITED 2
+
+#define STATUS_RESP_REQUEST_COMPLETE 0
+#define STATUS_RESP_TRANSPORT_FAILURE 1
+#define STATUS_RESP_ILLEGAL_REQUEST 2
+#define STATUS_RESP_VENDOR_DEPENDENT 3
+
+#define SBP_STATUS_OK 0
+#define SBP_STATUS_REQ_TYPE_NOTSUPP 1
+#define SBP_STATUS_SPEED_NOTSUPP 2
+#define SBP_STATUS_PAGE_SIZE_NOTSUPP 3
+#define SBP_STATUS_ACCESS_DENIED 4
+#define SBP_STATUS_LUN_NOTSUPP 5
+#define SBP_STATUS_PAYLOAD_TOO_SMALL 6
+/* 7 is reserved */
+#define SBP_STATUS_RESOURCES_UNAVAIL 8
+#define SBP_STATUS_FUNCTION_REJECTED 9
+#define SBP_STATUS_LOGIN_ID_UNKNOWN 10
+#define SBP_STATUS_DUMMY_ORB_COMPLETE 11
+#define SBP_STATUS_REQUEST_ABORTED 12
+#define SBP_STATUS_UNSPECIFIED_ERROR 0xff
+
+#define AGENT_STATE_RESET 0
+#define AGENT_STATE_ACTIVE 1
+#define AGENT_STATE_SUSPENDED 2
+#define AGENT_STATE_DEAD 3
+
+struct sbp2_pointer {
+ __be32 high;
+ __be32 low;
+};
+
+struct sbp_command_block_orb {
+ struct sbp2_pointer next_orb;
+ struct sbp2_pointer data_descriptor;
+ __be32 misc;
+ u8 command_block[12];
+};
+
+struct sbp_page_table_entry {
+ __be16 segment_length;
+ __be16 segment_base_hi;
+ __be32 segment_base_lo;
+};
+
+struct sbp_management_orb {
+ struct sbp2_pointer ptr1;
+ struct sbp2_pointer ptr2;
+ __be32 misc;
+ __be32 length;
+ struct sbp2_pointer status_fifo;
+};
+
+struct sbp_status_block {
+ __be32 status;
+ __be32 orb_low;
+ u8 data[24];
+};
+
+struct sbp_login_response_block {
+ __be32 misc;
+ struct sbp2_pointer command_block_agent;
+ __be32 reconnect_hold;
+};
+
+struct sbp_login_descriptor {
+ struct sbp_session *sess;
+ struct list_head link;
+
+ struct se_lun *lun;
+
+ u64 status_fifo_addr;
+ int exclusive;
+ u16 login_id;
+ atomic_t unsolicited_status_enable;
+
+ struct sbp_target_agent *tgt_agt;
+};
+
+struct sbp_session {
+ struct se_session *se_sess;
+ struct list_head login_list;
+ spinlock_t login_list_lock;
+ struct delayed_work maint_work;
+
+ u64 guid; /* login_owner_EUI_64 */
+ int node_id; /* login_owner_ID */
+
+ struct fw_card *card;
+ int generation;
+ int speed;
+
+ int reconnect_hold;
+ u64 reconnect_expires;
+};
+
+struct sbp_nacl {
+ /* Initiator EUI-64 */
+ u64 guid;
+ /* ASCII formatted GUID for SBP Initiator port */
+ char iport_name[SBP_NAMELEN];
+ /* Returned by sbp_make_nodeacl() */
+ struct se_node_acl se_node_acl;
+};
+
+struct sbp_tpg {
+ /* Target portal group tag for TCM */
+ u16 tport_tpgt;
+ /* Pointer back to sbp_tport */
+ struct sbp_tport *tport;
+ /* Returned by sbp_make_tpg() */
+ struct se_portal_group se_tpg;
+};
+
+struct sbp_tport {
+ /* Target Unit Identifier (EUI-64) */
+ u64 guid;
+ /* Target port name */
+ char tport_name[SBP_NAMELEN];
+ /* Returned by sbp_make_tport() */
+ struct se_wwn tport_wwn;
+
+ struct sbp_tpg *tpg;
+
+ /* FireWire unit directory */
+ struct fw_descriptor unit_directory;
+
+ /* SBP Management Agent */
+ struct sbp_management_agent *mgt_agt;
+
+ /* Parameters */
+ int enable;
+ s32 directory_id;
+ int mgt_orb_timeout;
+ int max_reconnect_timeout;
+ int max_logins_per_lun;
+};
+
+extern struct target_fabric_configfs *sbp_fabric_configfs;
+extern const struct fw_address_region sbp_register_region;
+extern struct workqueue_struct *sbp_workqueue;
+
+static inline u64 sbp2_pointer_to_addr(const struct sbp2_pointer *ptr)
+{
+ return (u64)(be32_to_cpu(ptr->high) & 0x0000ffff) << 32 |
+ (be32_to_cpu(ptr->low) & 0xfffffffc);
+}
+
+static inline void addr_to_sbp2_pointer(u64 addr, struct sbp2_pointer *ptr)
+{
+ ptr->high = cpu_to_be32(addr >> 32);
+ ptr->low = cpu_to_be32(addr);
+}
+
--
1.7.9


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