sbp2.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:17k
- /*
- * sbp2.h - Defines and prototypes for sbp2.c
- *
- * Copyright (C) 2000 James Goodwin, Filanet Corporation (www.filanet.com)
- * jamesg@filanet.com
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- #ifndef SBP2_H
- #define SBP2_H
- #define SBP2_DEVICE_NAME "sbp2"
- #define SBP2_DEVICE_NAME_SIZE 4
- /*
- * SBP2 specific structures and defines
- */
- #define ORB_FMT_CMD 0x0
- #define ORB_FMT_DUMMY 0x3
- #define ORB_DIRECTION_WRITE_TO_MEDIA 0x0
- #define ORB_DIRECTION_READ_FROM_MEDIA 0x1
- #define ORB_DIRECTION_NO_DATA_TRANSFER 0x2
- #define ORB_SET_NOTIFY(value) ((value & 0x1) << 31)
- #define ORB_SET_RQ_FMT(value) ((value & 0x3) << 29)
- #define ORB_SET_NODE_ID(value) ((value & 0xffff) << 16)
- struct sbp2_dummy_orb {
- volatile u32 next_ORB_hi;
- volatile u32 next_ORB_lo;
- u32 reserved1;
- u32 reserved2;
- u32 notify_rq_fmt;
- u8 command_block[12];
- };
- #define ORB_SET_DATA_SIZE(value) (value & 0xffff)
- #define ORB_SET_PAGE_SIZE(value) ((value & 0x7) << 16)
- #define ORB_SET_PAGE_TABLE_PRESENT(value) ((value & 0x1) << 19)
- #define ORB_SET_MAX_PAYLOAD(value) ((value & 0xf) << 20)
- #define ORB_SET_SPEED(value) ((value & 0x7) << 24)
- #define ORB_SET_DIRECTION(value) ((value & 0x1) << 27)
- struct sbp2_command_orb {
- volatile u32 next_ORB_hi;
- volatile u32 next_ORB_lo;
- u32 data_descriptor_hi;
- u32 data_descriptor_lo;
- u32 misc;
- u8 cdb[12];
- };
- #define LOGIN_REQUEST 0x0
- #define QUERY_LOGINS_REQUEST 0x1
- #define RECONNECT_REQUEST 0x3
- #define SET_PASSWORD_REQUEST 0x4
- #define LOGOUT_REQUEST 0x7
- #define ABORT_TASK_REQUEST 0xb
- #define ABORT_TASK_SET 0xc
- #define LOGICAL_UNIT_RESET 0xe
- #define TARGET_RESET_REQUEST 0xf
- #define ORB_SET_LUN(value) (value & 0xffff)
- #define ORB_SET_FUNCTION(value) ((value & 0xf) << 16)
- #define ORB_SET_RECONNECT(value) ((value & 0xf) << 20)
- #define ORB_SET_EXCLUSIVE(value) ((value & 0x1) << 28)
- #define ORB_SET_LOGIN_RESP_LENGTH(value) (value & 0xffff)
- #define ORB_SET_PASSWD_LENGTH(value) ((value & 0xffff) << 16)
- struct sbp2_login_orb {
- u32 password_hi;
- u32 password_lo;
- u32 login_response_hi;
- u32 login_response_lo;
- u32 lun_misc;
- u32 passwd_resp_lengths;
- u32 status_FIFO_hi;
- u32 status_FIFO_lo;
- };
- #define RESPONSE_GET_LOGIN_ID(value) (value & 0xffff)
- #define RESPONSE_GET_LENGTH(value) ((value >> 16) & 0xffff)
- #define RESPONSE_GET_RECONNECT_HOLD(value) (value & 0xffff)
- struct sbp2_login_response {
- u32 length_login_ID;
- u32 command_block_agent_hi;
- u32 command_block_agent_lo;
- u32 reconnect_hold;
- };
- #define ORB_SET_LOGIN_ID(value) (value & 0xffff)
- struct sbp2_reconnect_orb {
- u32 reserved1;
- u32 reserved2;
- u32 reserved3;
- u32 reserved4;
- u32 login_ID_misc;
- u32 reserved5;
- u32 status_FIFO_hi;
- u32 status_FIFO_lo;
- };
- struct sbp2_logout_orb {
- u32 reserved1;
- u32 reserved2;
- u32 reserved3;
- u32 reserved4;
- u32 login_ID_misc;
- u32 reserved5;
- u32 status_FIFO_hi;
- u32 status_FIFO_lo;
- };
- #define PAGE_TABLE_SET_SEGMENT_BASE_HI(value) (value & 0xffff)
- #define PAGE_TABLE_SET_SEGMENT_LENGTH(value) ((value & 0xffff) << 16)
- struct sbp2_unrestricted_page_table {
- u32 length_segment_base_hi;
- u32 segment_base_lo;
- };
- #define RESP_STATUS_REQUEST_COMPLETE 0x0
- #define RESP_STATUS_TRANSPORT_FAILURE 0x1
- #define RESP_STATUS_ILLEGAL_REQUEST 0x2
- #define RESP_STATUS_VENDOR_DEPENDENT 0x3
- #define SBP2_STATUS_NO_ADDITIONAL_INFO 0x0
- #define SBP2_STATUS_REQ_TYPE_NOT_SUPPORTED 0x1
- #define SBP2_STATUS_SPEED_NOT_SUPPORTED 0x2
- #define SBP2_STATUS_PAGE_SIZE_NOT_SUPPORTED 0x3
- #define SBP2_STATUS_ACCESS_DENIED 0x4
- #define SBP2_STATUS_LU_NOT_SUPPORTED 0x5
- #define SBP2_STATUS_MAX_PAYLOAD_TOO_SMALL 0x6
- #define SBP2_STATUS_RESOURCES_UNAVAILABLE 0x8
- #define SBP2_STATUS_FUNCTION_REJECTED 0x9
- #define SBP2_STATUS_LOGIN_ID_NOT_RECOGNIZED 0xa
- #define SBP2_STATUS_DUMMY_ORB_COMPLETED 0xb
- #define SBP2_STATUS_REQUEST_ABORTED 0xc
- #define SBP2_STATUS_UNSPECIFIED_ERROR 0xff
- #define SFMT_CURRENT_ERROR 0x0
- #define SFMT_DEFERRED_ERROR 0x1
- #define SFMT_VENDOR_DEPENDENT_STATUS 0x3
- #define SBP2_SCSI_STATUS_GOOD 0x0
- #define SBP2_SCSI_STATUS_CHECK_CONDITION 0x2
- #define SBP2_SCSI_STATUS_CONDITION_MET 0x4
- #define SBP2_SCSI_STATUS_BUSY 0x8
- #define SBP2_SCSI_STATUS_RESERVATION_CONFLICT 0x18
- #define SBP2_SCSI_STATUS_COMMAND_TERMINATED 0x22
- #define SBP2_SCSI_STATUS_SELECTION_TIMEOUT 0xff
- #define STATUS_GET_ORB_OFFSET_HI(value) (value & 0xffff)
- #define STATUS_GET_SBP_STATUS(value) ((value >> 16) & 0xff)
- #define STATUS_GET_LENGTH(value) ((value >> 24) & 0x7)
- #define STATUS_GET_DEAD_BIT(value) ((value >> 27) & 0x1)
- #define STATUS_GET_RESP(value) ((value >> 28) & 0x3)
- #define STATUS_GET_SRC(value) ((value >> 30) & 0x3)
- struct sbp2_status_block {
- u32 ORB_offset_hi_misc;
- u32 ORB_offset_lo;
- u8 command_set_dependent[24];
- };
- /*
- * Miscellaneous SBP2 related config rom defines
- */
- #define SBP2_STATUS_FIFO_ADDRESS 0xfffe00000000ULL /* for write posting! */
- #define SBP2_STATUS_FIFO_ADDRESS_HI 0xfffe
- #define SBP2_STATUS_FIFO_ADDRESS_LO 0x0
- #define SBP2_UNIT_DIRECTORY_OFFSET_KEY 0xd1
- #define SBP2_CSR_OFFSET_KEY 0x54
- #define SBP2_UNIT_SPEC_ID_KEY 0x12
- #define SBP2_UNIT_SW_VERSION_KEY 0x13
- #define SBP2_COMMAND_SET_SPEC_ID_KEY 0x38
- #define SBP2_COMMAND_SET_KEY 0x39
- #define SBP2_UNIT_CHARACTERISTICS_KEY 0x3a
- #define SBP2_DEVICE_TYPE_AND_LUN_KEY 0x14
- #define SBP2_FIRMWARE_REVISION_KEY 0x3c
- #define SBP2_AGENT_STATE_OFFSET 0x00ULL
- #define SBP2_AGENT_RESET_OFFSET 0x04ULL
- #define SBP2_ORB_POINTER_OFFSET 0x08ULL
- #define SBP2_DOORBELL_OFFSET 0x10ULL
- #define SBP2_UNSOLICITED_STATUS_ENABLE_OFFSET 0x14ULL
- #define SBP2_UNSOLICITED_STATUS_VALUE 0xf
- #define SBP2_BUSY_TIMEOUT_ADDRESS 0xfffff0000210ULL
- #define SBP2_BUSY_TIMEOUT_VALUE 0xf
- #define SBP2_AGENT_RESET_DATA 0xf
- /*
- * Unit spec id and sw version entry for SBP-2 devices
- */
- #define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
- #define SBP2_SW_VERSION_ENTRY 0x00010483
- /*
- * Miscellaneous general config rom related defines
- */
- #define CONFIG_ROM_INITIAL_MEMORY_SPACE 0xfffff0000000ULL
- #define CONFIG_ROM_BASE_ADDRESS 0xfffff0000400ULL
- #define CONFIG_ROM_ROOT_DIR_BASE 0xfffff0000414ULL
- #define CONFIG_ROM_UNIT_DIRECTORY_OFFSET 0xfffff0000424ULL
- #define SBP2_128KB_BROKEN_FIRMWARE 0xa0b800
- #define SBP2_BROKEN_FIRMWARE_MAX_TRANSFER 0x20000
- /*
- * Flags for SBP-2 functions
- */
- #define SBP2_SEND_NO_WAIT 0x00000001
- /*
- * SCSI specific stuff
- */
- #define SBP2_MAX_SG_ELEMENTS SG_ALL
- #define SBP2_CLUSTERING ENABLE_CLUSTERING
- #define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
- #define SBP2SCSI_MAX_SCSI_IDS 8
- #define SBP2SCSI_MAX_OUTSTANDING_CMDS 8 /* Max total outstanding sbp2 commands allowed at a time! */
- #define SBP2SCSI_MAX_CMDS_PER_LUN 4 /* Max outstanding sbp2 commands per device - tune as needed */
- #ifndef TYPE_SDAD
- #define TYPE_SDAD 0x0e /* simplified direct access device */
- #endif
- /*
- * SCSI direction table... since the scsi stack doesn't specify direction... =(
- *
- * DIN = IN data direction
- * DOU = OUT data direction
- * DNO = No data transfer
- * DUN = Unknown data direction
- *
- * Opcode 0xec (Teac specific "opc execute") possibly should be DNO,
- * but we'll change it when somebody reports a problem with this.
- */
- #define DIN ORB_DIRECTION_READ_FROM_MEDIA
- #define DOU ORB_DIRECTION_WRITE_TO_MEDIA
- #define DNO ORB_DIRECTION_NO_DATA_TRANSFER
- #define DUN DIN
- static unchar sbp2scsi_direction_table[0x100] = {
- DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
- DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
- DIN,DUN,DIN,DIN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
- DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
- DOU,DOU,DIN,DIN,DIN,DNO,DIN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DNO,DUN,
- DUN,DIN,DIN,DNO,DNO,DOU,DUN,DUN,DNO,DIN,DIN,DNO,DIN,DOU,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DNO,DOU,DOU,DIN,DNO,DNO,DNO,DIN,DNO,DOU,DUN,DNO,DIN,DOU,DOU,
- DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DIN,DNO,DNO,DNO,DIN,DIN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
- };
- /*
- * Number of request packets available for actual sbp2 I/O requests (these are used
- * for sending command and agent reset packets).
- */
- #define SBP2_MAX_REQUEST_PACKETS SBP2SCSI_MAX_OUTSTANDING_CMDS /* Per host adapter instance */
- #define SBP2_MAX_COMMAND_ORBS SBP2SCSI_MAX_CMDS_PER_LUN * 2 /* Per sbp2 device instance */
- /*
- * Request packets structure (used for sending command and agent reset packets)
- */
- struct sbp2_request_packet {
- struct list_head list;
- struct hpsb_packet *packet;
- struct tq_struct tq;
- void *hi_context;
- };
- /*
- * Encapsulates all the info necessary for an outstanding command.
- */
- struct sbp2_command_info {
- struct list_head list;
- struct sbp2_command_orb command_orb;
- dma_addr_t command_orb_dma;
- Scsi_Cmnd *Current_SCpnt;
- void (*Current_done)(Scsi_Cmnd *);
- unsigned int linked;
- /* Also need s/g structure for each sbp2 command */
- struct sbp2_unrestricted_page_table scatter_gather_element[SBP2_MAX_SG_ELEMENTS];
- dma_addr_t sge_dma;
- void *sge_buffer;
- dma_addr_t cmd_dma;
- int dma_type;
- unsigned long dma_size;
- int dma_dir;
- };
- /*
- * Information needed on a per scsi id basis (one for each sbp2 device)
- */
- struct scsi_id_instance_data {
- /* SCSI ID */
- int id;
- /*
- * Various sbp2 specific structures
- */
- struct sbp2_command_orb *last_orb;
- struct sbp2_login_orb *login_orb;
- dma_addr_t login_orb_dma;
- struct sbp2_login_response *login_response;
- dma_addr_t login_response_dma;
- struct sbp2_reconnect_orb *reconnect_orb;
- dma_addr_t reconnect_orb_dma;
- struct sbp2_logout_orb *logout_orb;
- dma_addr_t logout_orb_dma;
- struct sbp2_status_block status_block;
- /*
- * Stuff we need to know about the sbp2 device itself
- */
- u64 sbp2_management_agent_addr;
- u64 sbp2_command_block_agent_addr;
- u32 speed_code;
- u32 max_payload_size;
- /*
- * Values pulled from the device's unit directory
- */
- struct unit_directory *ud;
- u32 sbp2_command_set_spec_id;
- u32 sbp2_command_set;
- u32 sbp2_unit_characteristics;
- u32 sbp2_device_type_and_lun;
- u32 sbp2_firmware_revision;
- /*
- * Wait queue used for logins, reconnects, logouts
- */
- wait_queue_head_t sbp2_login_wait;
- /*
- * Pool of command orbs, so we can have more than overlapped command per id
- */
- spinlock_t sbp2_command_orb_lock;
- struct list_head sbp2_command_orb_inuse;
- struct list_head sbp2_command_orb_completed;
- u32 sbp2_total_command_orbs;
- /* Node entry, as retrieved from NodeMgr entries */
- struct node_entry *ne;
- };
- /*
- * Sbp2 host data structure (one per sbp2 host)
- */
- struct sbp2scsi_host_info {
- /*
- * For use in keeping track of hosts
- */
- struct list_head list;
- struct hpsb_host *host;
- /*
- * Spin locks for command processing and packet pool management
- */
- spinlock_t sbp2_command_lock;
- spinlock_t sbp2_request_packet_lock;
- /*
- * This is the scsi host we register with the scsi mid level.
- * We keep a reference to it here, so we can unregister it
- * when the hpsb_host is removed.
- */
- struct Scsi_Host *scsi_host;
- /*
- * Lists keeping track of inuse/free sbp2_request_packets. These structures are
- * used for sending out sbp2 command and agent reset packets. We initially create
- * a pool of request packets so that we don't have to do any kmallocs while in critical
- * I/O paths.
- */
- struct list_head sbp2_req_inuse;
- struct list_head sbp2_req_free;
- /*
- * Here is the pool of request packets. All the hpsb packets (for 1394 bus transactions)
- * are allocated at init and simply re-initialized when needed.
- */
- struct sbp2_request_packet request_packet[SBP2_MAX_REQUEST_PACKETS];
- /*
- * SCSI ID instance data (one for each sbp2 device instance possible)
- */
- struct scsi_id_instance_data *scsi_id[SBP2SCSI_MAX_SCSI_IDS];
- };
- /*
- * Function prototypes
- */
- /*
- * Various utility prototypes
- */
- static int sbp2util_create_request_packet_pool(struct sbp2scsi_host_info *hi);
- static void sbp2util_remove_request_packet_pool(struct sbp2scsi_host_info *hi);
- static struct sbp2_request_packet *sbp2util_allocate_write_request_packet(struct sbp2scsi_host_info *hi,
- nodeid_t node, u64 addr,
- size_t data_size,
- quadlet_t data);
- static void sbp2util_free_request_packet(struct sbp2_request_packet *request_packet);
- static int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id, struct sbp2scsi_host_info *hi);
- static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id, struct sbp2scsi_host_info *hi);
- static struct sbp2_command_info *sbp2util_find_command_for_orb(struct scsi_id_instance_data *scsi_id, dma_addr_t orb);
- static struct sbp2_command_info *sbp2util_find_command_for_SCpnt(struct scsi_id_instance_data *scsi_id, void *SCpnt);
- static struct sbp2_command_info *sbp2util_allocate_command_orb(struct scsi_id_instance_data *scsi_id,
- Scsi_Cmnd *Current_SCpnt,
- void (*Current_done)(Scsi_Cmnd *),
- struct sbp2scsi_host_info *hi);
- static void sbp2util_mark_command_completed(struct scsi_id_instance_data *scsi_id,
- struct sbp2_command_info *command);
- /*
- * IEEE-1394 core driver related prototypes
- */
- static void sbp2_add_host(struct hpsb_host *host);
- static struct sbp2scsi_host_info *sbp2_find_host_info(struct hpsb_host *host);
- static void sbp2_remove_host(struct hpsb_host *host);
- int sbp2_init(void);
- void sbp2_cleanup(void);
- static int sbp2_probe(struct unit_directory *ud);
- static void sbp2_disconnect(struct unit_directory *ud);
- static void sbp2_update(struct unit_directory *ud);
- static int sbp2_start_device(struct sbp2scsi_host_info *hi,
- struct unit_directory *ud);
- static void sbp2_remove_device(struct sbp2scsi_host_info *hi,
- struct scsi_id_instance_data *scsi_id);
- /*
- * SBP-2 protocol related prototypes
- */
- static int sbp2_login_device(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
- static int sbp2_reconnect_device(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
- static int sbp2_logout_device(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
- static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, int destid,
- quadlet_t *data, u64 addr, unsigned int length);
- static int sbp2_agent_reset(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id, u32 flags);
- static int sbp2_create_command_orb(struct sbp2scsi_host_info *hi,
- struct scsi_id_instance_data *scsi_id,
- struct sbp2_command_info *command,
- unchar *scsi_cmd,
- unsigned int scsi_use_sg,
- unsigned int scsi_request_bufflen,
- void *scsi_request_buffer, int dma_dir);
- static int sbp2_link_orb_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
- struct sbp2_command_info *command);
- static int sbp2_send_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
- Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
- static int sbp2_send_split_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
- Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
- static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status, unchar *sense_data);
- static void sbp2_check_sbp2_command(unchar *cmd);
- static void sbp2_check_sbp2_response(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
- Scsi_Cmnd *SCpnt);
- static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id);
- static int sbp2_set_busy_timeout(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
- static int sbp2_max_speed_and_size(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
- /*
- * Scsi interface related prototypes
- */
- static int sbp2scsi_detect (Scsi_Host_Template *tpnt);
- void sbp2scsi_setup(char *str, int *ints);
- static int sbp2scsi_biosparam (Scsi_Disk *disk, kdev_t dev, int geom[]);
- static int sbp2scsi_abort (Scsi_Cmnd *SCpnt);
- static int sbp2scsi_reset (Scsi_Cmnd *SCpnt, unsigned int reset_flags);
- static int sbp2scsi_queuecommand (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
- static void sbp2scsi_complete_all_commands(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
- u32 status);
- static void sbp2scsi_complete_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
- u32 scsi_status, Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
- #endif /* SBP2_H */