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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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