413 lines
13 KiB
C
413 lines
13 KiB
C
/*
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* sbp2.h - Defines and prototypes for sbp2.c
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*
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* Copyright (C) 2000 James Goodwin, Filanet Corporation (www.filanet.com)
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* jamesg@filanet.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef SBP2_H
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#define SBP2_H
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#define SBP2_DEVICE_NAME "sbp2"
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/*
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* SBP2 specific structures and defines
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*/
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#define ORB_DIRECTION_WRITE_TO_MEDIA 0x0
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#define ORB_DIRECTION_READ_FROM_MEDIA 0x1
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#define ORB_DIRECTION_NO_DATA_TRANSFER 0x2
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#define ORB_SET_NULL_PTR(value) ((value & 0x1) << 31)
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#define ORB_SET_NOTIFY(value) ((value & 0x1) << 31)
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#define ORB_SET_RQ_FMT(value) ((value & 0x3) << 29) /* unused ? */
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#define ORB_SET_NODE_ID(value) ((value & 0xffff) << 16)
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#define ORB_SET_STATUS_FIFO_HI(value, id) (value >> 32 | ORB_SET_NODE_ID(id))
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#define ORB_SET_STATUS_FIFO_LO(value) (value & 0xffffffff)
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#define ORB_SET_DATA_SIZE(value) (value & 0xffff)
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#define ORB_SET_PAGE_SIZE(value) ((value & 0x7) << 16)
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#define ORB_SET_PAGE_TABLE_PRESENT(value) ((value & 0x1) << 19)
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#define ORB_SET_MAX_PAYLOAD(value) ((value & 0xf) << 20)
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#define ORB_SET_SPEED(value) ((value & 0x7) << 24)
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#define ORB_SET_DIRECTION(value) ((value & 0x1) << 27)
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struct sbp2_command_orb {
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u32 next_ORB_hi;
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u32 next_ORB_lo;
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u32 data_descriptor_hi;
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u32 data_descriptor_lo;
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u32 misc;
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u8 cdb[12];
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} __attribute__((packed));
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#define SBP2_LOGIN_REQUEST 0x0
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#define SBP2_QUERY_LOGINS_REQUEST 0x1
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#define SBP2_RECONNECT_REQUEST 0x3
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#define SBP2_SET_PASSWORD_REQUEST 0x4
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#define SBP2_LOGOUT_REQUEST 0x7
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#define SBP2_ABORT_TASK_REQUEST 0xb
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#define SBP2_ABORT_TASK_SET 0xc
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#define SBP2_LOGICAL_UNIT_RESET 0xe
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#define SBP2_TARGET_RESET_REQUEST 0xf
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#define ORB_SET_LUN(value) (value & 0xffff)
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#define ORB_SET_FUNCTION(value) ((value & 0xf) << 16)
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#define ORB_SET_RECONNECT(value) ((value & 0xf) << 20)
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#define ORB_SET_EXCLUSIVE(value) ((value & 0x1) << 28)
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#define ORB_SET_LOGIN_RESP_LENGTH(value) (value & 0xffff)
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#define ORB_SET_PASSWD_LENGTH(value) ((value & 0xffff) << 16)
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struct sbp2_login_orb {
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u32 password_hi;
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u32 password_lo;
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u32 login_response_hi;
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u32 login_response_lo;
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u32 lun_misc;
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u32 passwd_resp_lengths;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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} __attribute__((packed));
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#define RESPONSE_GET_LOGIN_ID(value) (value & 0xffff)
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#define RESPONSE_GET_LENGTH(value) ((value >> 16) & 0xffff)
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#define RESPONSE_GET_RECONNECT_HOLD(value) (value & 0xffff)
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struct sbp2_login_response {
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u32 length_login_ID;
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u32 command_block_agent_hi;
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u32 command_block_agent_lo;
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u32 reconnect_hold;
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} __attribute__((packed));
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#define ORB_SET_LOGIN_ID(value) (value & 0xffff)
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#define ORB_SET_QUERY_LOGINS_RESP_LENGTH(value) (value & 0xffff)
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struct sbp2_query_logins_orb {
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u32 reserved1;
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u32 reserved2;
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u32 query_response_hi;
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u32 query_response_lo;
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u32 lun_misc;
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u32 reserved_resp_length;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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} __attribute__((packed));
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#define RESPONSE_GET_MAX_LOGINS(value) (value & 0xffff)
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#define RESPONSE_GET_ACTIVE_LOGINS(value) ((RESPONSE_GET_LENGTH(value) - 4) / 12)
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struct sbp2_query_logins_response {
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u32 length_max_logins;
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u32 misc_IDs;
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u32 initiator_misc_hi;
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u32 initiator_misc_lo;
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} __attribute__((packed));
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struct sbp2_reconnect_orb {
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u32 reserved1;
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u32 reserved2;
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u32 reserved3;
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u32 reserved4;
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u32 login_ID_misc;
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u32 reserved5;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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} __attribute__((packed));
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struct sbp2_logout_orb {
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u32 reserved1;
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u32 reserved2;
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u32 reserved3;
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u32 reserved4;
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u32 login_ID_misc;
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u32 reserved5;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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} __attribute__((packed));
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#define PAGE_TABLE_SET_SEGMENT_BASE_HI(value) (value & 0xffff)
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#define PAGE_TABLE_SET_SEGMENT_LENGTH(value) ((value & 0xffff) << 16)
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struct sbp2_unrestricted_page_table {
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u32 length_segment_base_hi;
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u32 segment_base_lo;
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} __attribute__((packed));
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#define RESP_STATUS_REQUEST_COMPLETE 0x0
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#define RESP_STATUS_TRANSPORT_FAILURE 0x1
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#define RESP_STATUS_ILLEGAL_REQUEST 0x2
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#define RESP_STATUS_VENDOR_DEPENDENT 0x3
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#define SBP2_STATUS_NO_ADDITIONAL_INFO 0x0
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#define SBP2_STATUS_REQ_TYPE_NOT_SUPPORTED 0x1
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#define SBP2_STATUS_SPEED_NOT_SUPPORTED 0x2
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#define SBP2_STATUS_PAGE_SIZE_NOT_SUPPORTED 0x3
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#define SBP2_STATUS_ACCESS_DENIED 0x4
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#define SBP2_STATUS_LU_NOT_SUPPORTED 0x5
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#define SBP2_STATUS_MAX_PAYLOAD_TOO_SMALL 0x6
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#define SBP2_STATUS_RESOURCES_UNAVAILABLE 0x8
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#define SBP2_STATUS_FUNCTION_REJECTED 0x9
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#define SBP2_STATUS_LOGIN_ID_NOT_RECOGNIZED 0xa
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#define SBP2_STATUS_DUMMY_ORB_COMPLETED 0xb
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#define SBP2_STATUS_REQUEST_ABORTED 0xc
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#define SBP2_STATUS_UNSPECIFIED_ERROR 0xff
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#define SFMT_CURRENT_ERROR 0x0
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#define SFMT_DEFERRED_ERROR 0x1
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#define SFMT_VENDOR_DEPENDENT_STATUS 0x3
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#define SBP2_SCSI_STATUS_GOOD 0x0
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#define SBP2_SCSI_STATUS_CHECK_CONDITION 0x2
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#define SBP2_SCSI_STATUS_CONDITION_MET 0x4
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#define SBP2_SCSI_STATUS_BUSY 0x8
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#define SBP2_SCSI_STATUS_RESERVATION_CONFLICT 0x18
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#define SBP2_SCSI_STATUS_COMMAND_TERMINATED 0x22
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#define SBP2_SCSI_STATUS_SELECTION_TIMEOUT 0xff
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#define STATUS_GET_SRC(value) (((value) >> 30) & 0x3)
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#define STATUS_GET_RESP(value) (((value) >> 28) & 0x3)
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#define STATUS_GET_LEN(value) (((value) >> 24) & 0x7)
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#define STATUS_GET_SBP_STATUS(value) (((value) >> 16) & 0xff)
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#define STATUS_GET_ORB_OFFSET_HI(value) ((value) & 0x0000ffff)
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#define STATUS_TEST_DEAD(value) ((value) & 0x08000000)
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/* test 'resp' | 'dead' | 'sbp2_status' */
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#define STATUS_TEST_RDS(value) ((value) & 0x38ff0000)
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struct sbp2_status_block {
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u32 ORB_offset_hi_misc;
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u32 ORB_offset_lo;
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u8 command_set_dependent[24];
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} __attribute__((packed));
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/*
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* Miscellaneous SBP2 related config rom defines
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*/
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#define SBP2_UNIT_DIRECTORY_OFFSET_KEY 0xd1
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#define SBP2_CSR_OFFSET_KEY 0x54
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#define SBP2_UNIT_SPEC_ID_KEY 0x12
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#define SBP2_UNIT_SW_VERSION_KEY 0x13
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#define SBP2_COMMAND_SET_SPEC_ID_KEY 0x38
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#define SBP2_COMMAND_SET_KEY 0x39
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#define SBP2_UNIT_CHARACTERISTICS_KEY 0x3a
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#define SBP2_DEVICE_TYPE_AND_LUN_KEY 0x14
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#define SBP2_FIRMWARE_REVISION_KEY 0x3c
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#define SBP2_AGENT_STATE_OFFSET 0x00ULL
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#define SBP2_AGENT_RESET_OFFSET 0x04ULL
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#define SBP2_ORB_POINTER_OFFSET 0x08ULL
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#define SBP2_DOORBELL_OFFSET 0x10ULL
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#define SBP2_UNSOLICITED_STATUS_ENABLE_OFFSET 0x14ULL
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#define SBP2_UNSOLICITED_STATUS_VALUE 0xf
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#define SBP2_BUSY_TIMEOUT_ADDRESS 0xfffff0000210ULL
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#define SBP2_BUSY_TIMEOUT_VALUE 0xf
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#define SBP2_AGENT_RESET_DATA 0xf
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/*
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* Unit spec id and sw version entry for SBP-2 devices
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*/
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#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
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#define SBP2_SW_VERSION_ENTRY 0x00010483
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/*
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* SCSI specific stuff
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*/
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#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
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#define SBP2_MAX_SECTORS 255 /* Max sectors supported */
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#define SBP2_MAX_CMDS 8 /* This should be safe */
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/* Flags for detected oddities and brokeness */
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#define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
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#define SBP2_WORKAROUND_INQUIRY_36 0x2
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#define SBP2_WORKAROUND_MODE_SENSE_8 0x4
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#define SBP2_WORKAROUND_FIX_CAPACITY 0x8
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#define SBP2_WORKAROUND_OVERRIDE 0x100
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/* This is the two dma types we use for cmd_dma below */
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enum cmd_dma_types {
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CMD_DMA_NONE,
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CMD_DMA_PAGE,
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CMD_DMA_SINGLE
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};
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/*
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* Encapsulates all the info necessary for an outstanding command.
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*/
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struct sbp2_command_info {
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struct list_head list;
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struct sbp2_command_orb command_orb ____cacheline_aligned;
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dma_addr_t command_orb_dma ____cacheline_aligned;
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struct scsi_cmnd *Current_SCpnt;
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void (*Current_done)(struct scsi_cmnd *);
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/* Also need s/g structure for each sbp2 command */
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struct sbp2_unrestricted_page_table scatter_gather_element[SG_ALL] ____cacheline_aligned;
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dma_addr_t sge_dma ____cacheline_aligned;
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void *sge_buffer;
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dma_addr_t cmd_dma;
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enum cmd_dma_types dma_type;
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unsigned long dma_size;
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int dma_dir;
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};
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struct sbp2scsi_host_info;
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/*
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* Information needed on a per scsi id basis (one for each sbp2 device)
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*/
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struct scsi_id_instance_data {
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/*
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* Various sbp2 specific structures
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*/
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struct sbp2_command_orb *last_orb;
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dma_addr_t last_orb_dma;
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struct sbp2_login_orb *login_orb;
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dma_addr_t login_orb_dma;
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struct sbp2_login_response *login_response;
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dma_addr_t login_response_dma;
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struct sbp2_query_logins_orb *query_logins_orb;
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dma_addr_t query_logins_orb_dma;
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struct sbp2_query_logins_response *query_logins_response;
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dma_addr_t query_logins_response_dma;
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struct sbp2_reconnect_orb *reconnect_orb;
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dma_addr_t reconnect_orb_dma;
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struct sbp2_logout_orb *logout_orb;
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dma_addr_t logout_orb_dma;
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struct sbp2_status_block status_block;
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/*
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* Stuff we need to know about the sbp2 device itself
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*/
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u64 sbp2_management_agent_addr;
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u64 sbp2_command_block_agent_addr;
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u32 speed_code;
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u32 max_payload_size;
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/*
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* Values pulled from the device's unit directory
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*/
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u32 sbp2_command_set_spec_id;
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u32 sbp2_command_set;
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u32 sbp2_unit_characteristics;
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u32 sbp2_lun;
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u32 sbp2_firmware_revision;
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/*
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* Address for the device to write status blocks to
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*/
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u64 status_fifo_addr;
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/*
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* Waitqueue flag for logins, reconnects, logouts, query logins
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*/
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int access_complete:1;
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/*
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* Pool of command orbs, so we can have more than overlapped command per id
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*/
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spinlock_t sbp2_command_orb_lock;
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struct list_head sbp2_command_orb_inuse;
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struct list_head sbp2_command_orb_completed;
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struct list_head scsi_list;
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/* Node entry, as retrieved from NodeMgr entries */
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struct node_entry *ne;
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struct unit_directory *ud;
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/* A backlink to our host_info */
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struct sbp2scsi_host_info *hi;
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/* SCSI related pointers */
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struct scsi_device *sdev;
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struct Scsi_Host *scsi_host;
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/* Device specific workarounds/brokeness */
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unsigned workarounds;
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atomic_t state;
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struct delayed_work protocol_work;
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};
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/* For use in scsi_id_instance_data.state */
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enum sbp2lu_state_types {
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SBP2LU_STATE_RUNNING, /* all normal */
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SBP2LU_STATE_IN_RESET, /* between bus reset and reconnect */
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SBP2LU_STATE_IN_SHUTDOWN /* when sbp2_remove was called */
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};
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/* Sbp2 host data structure (one per IEEE1394 host) */
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struct sbp2scsi_host_info {
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struct hpsb_host *host; /* IEEE1394 host */
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struct list_head scsi_ids; /* List of scsi ids on this host */
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};
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/*
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* Function prototypes
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*/
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/*
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* Various utility prototypes
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*/
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static int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id);
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static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id);
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static struct sbp2_command_info *sbp2util_find_command_for_orb(struct scsi_id_instance_data *scsi_id, dma_addr_t orb);
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static struct sbp2_command_info *sbp2util_find_command_for_SCpnt(struct scsi_id_instance_data *scsi_id, void *SCpnt);
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static struct sbp2_command_info *sbp2util_allocate_command_orb(struct scsi_id_instance_data *scsi_id,
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struct scsi_cmnd *Current_SCpnt,
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void (*Current_done)(struct scsi_cmnd *));
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static void sbp2util_mark_command_completed(struct scsi_id_instance_data *scsi_id,
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struct sbp2_command_info *command);
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static int sbp2_start_device(struct scsi_id_instance_data *scsi_id);
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static void sbp2_remove_device(struct scsi_id_instance_data *scsi_id);
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#ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA
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static int sbp2_handle_physdma_write(struct hpsb_host *host, int nodeid, int destid, quadlet_t *data,
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u64 addr, size_t length, u16 flags);
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static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid, quadlet_t *data,
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u64 addr, size_t length, u16 flags);
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#endif
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/*
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* SBP-2 protocol related prototypes
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*/
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static int sbp2_query_logins(struct scsi_id_instance_data *scsi_id);
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static int sbp2_login_device(struct scsi_id_instance_data *scsi_id);
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static int sbp2_reconnect_device(struct scsi_id_instance_data *scsi_id);
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static int sbp2_logout_device(struct scsi_id_instance_data *scsi_id);
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static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, int destid,
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quadlet_t *data, u64 addr, size_t length, u16 flags);
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static int sbp2_agent_reset(struct scsi_id_instance_data *scsi_id, int wait);
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static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status,
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unchar *sense_data);
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static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id,
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struct unit_directory *ud);
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static int sbp2_set_busy_timeout(struct scsi_id_instance_data *scsi_id);
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static int sbp2_max_speed_and_size(struct scsi_id_instance_data *scsi_id);
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#endif /* SBP2_H */
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