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linux_dsm_epyc7002/drivers/scsi/be2iscsi/be_cmds.h
Jitendra Bhivare 090e2184ba be2iscsi: Couple MCC tag and WRB alloc and free 
WARN_ON(atomic_read(&mccq->used) >= mccq->len) seen when FW gets into
UE.

MCCQ overflow is happening because driver discards any new request and
frees up the tag. The tag allocation controls the number of MCC WRB
posted.  It is being replenished but WRBs are not hence the WARN_ON.

Allocation and freeing of WRB and tags for MCC is now done in one place.
This helps to achieve proper accounting of WRB indices and MCC tags.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00

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/**
* Copyright (C) 2005 - 2015 Emulex
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation. The full GNU General
* Public License is included in this distribution in the file called COPYING.
*
* Contact Information:
* linux-drivers@avagotech.com
*
* Emulex
* 3333 Susan Street
* Costa Mesa, CA 92626
*/
#ifndef BEISCSI_CMDS_H
#define BEISCSI_CMDS_H
/**
* The driver sends configuration and managements command requests to the
* firmware in the BE. These requests are communicated to the processor
* using Work Request Blocks (WRBs) submitted to the MCC-WRB ring or via one
* WRB inside a MAILBOX.
* The commands are serviced by the ARM processor in the OneConnect's MPU.
*/
struct be_sge {
__le32 pa_lo;
__le32 pa_hi;
__le32 len;
};
#define MCC_WRB_SGE_CNT_SHIFT 3 /* bits 3 - 7 of dword 0 */
#define MCC_WRB_SGE_CNT_MASK 0x1F /* bits 3 - 7 of dword 0 */
struct be_mcc_wrb {
u32 embedded; /* dword 0 */
u32 payload_length; /* dword 1 */
u32 tag0; /* dword 2 */
u32 tag1; /* dword 3 */
u32 rsvd; /* dword 4 */
union {
#define EMBED_MBX_MAX_PAYLOAD_SIZE 220
u8 embedded_payload[236]; /* used by embedded cmds */
struct be_sge sgl[19]; /* used by non-embedded cmds */
} payload;
};
#define CQE_FLAGS_VALID_MASK (1 << 31)
#define CQE_FLAGS_ASYNC_MASK (1 << 30)
#define CQE_FLAGS_COMPLETED_MASK (1 << 28)
#define CQE_FLAGS_CONSUMED_MASK (1 << 27)
/* Completion Status */
#define MCC_STATUS_SUCCESS 0x0
#define MCC_STATUS_FAILED 0x1
#define MCC_STATUS_ILLEGAL_REQUEST 0x2
#define MCC_STATUS_ILLEGAL_FIELD 0x3
#define MCC_STATUS_INSUFFICIENT_BUFFER 0x4
#define CQE_STATUS_COMPL_MASK 0xFFFF
#define CQE_STATUS_COMPL_SHIFT 0 /* bits 0 - 15 */
#define CQE_STATUS_EXTD_MASK 0xFFFF
#define CQE_STATUS_EXTD_SHIFT 16 /* bits 31 - 16 */
#define CQE_STATUS_ADDL_MASK 0xFF00
#define CQE_STATUS_ADDL_SHIFT 8
#define CQE_STATUS_MASK 0xFF
#define CQE_STATUS_WRB_MASK 0xFF0000
#define CQE_STATUS_WRB_SHIFT 16
#define BEISCSI_HOST_MBX_TIMEOUT (110 * 1000)
#define BEISCSI_FW_MBX_TIMEOUT 100
/* MBOX Command VER */
#define MBX_CMD_VER1 0x01
#define MBX_CMD_VER2 0x02
struct be_mcc_compl {
u32 status; /* dword 0 */
u32 tag0; /* dword 1 */
u32 tag1; /* dword 2 */
u32 flags; /* dword 3 */
};
/********* Mailbox door bell *************/
/**
* Used for driver communication with the FW.
* The software must write this register twice to post any command. First,
* it writes the register with hi=1 and the upper bits of the physical address
* for the MAILBOX structure. Software must poll the ready bit until this
* is acknowledged. Then, sotware writes the register with hi=0 with the lower
* bits in the address. It must poll the ready bit until the command is
* complete. Upon completion, the MAILBOX will contain a valid completion
* queue entry.
*/
#define MPU_MAILBOX_DB_OFFSET 0x160
#define MPU_MAILBOX_DB_RDY_MASK 0x1 /* bit 0 */
#define MPU_MAILBOX_DB_HI_MASK 0x2 /* bit 1 */
/********** MPU semphore ******************/
#define MPU_EP_SEMAPHORE_OFFSET 0xac
#define EP_SEMAPHORE_POST_STAGE_MASK 0x0000FFFF
#define EP_SEMAPHORE_POST_ERR_MASK 0x1
#define EP_SEMAPHORE_POST_ERR_SHIFT 31
/********** MCC door bell ************/
#define DB_MCCQ_OFFSET 0x140
#define DB_MCCQ_RING_ID_MASK 0xFFFF /* bits 0 - 15 */
/* Number of entries posted */
#define DB_MCCQ_NUM_POSTED_SHIFT 16 /* bits 16 - 29 */
/* MPU semphore POST stage values */
#define POST_STAGE_ARMFW_RDY 0xc000 /* FW is done with POST */
/**
* When the async bit of mcc_compl is set, the last 4 bytes of
* mcc_compl is interpreted as follows:
*/
#define ASYNC_TRAILER_EVENT_CODE_SHIFT 8 /* bits 8 - 15 */
#define ASYNC_TRAILER_EVENT_CODE_MASK 0xFF
#define ASYNC_EVENT_CODE_LINK_STATE 0x1
#define ASYNC_EVENT_CODE_ISCSI 0x4
#define ASYNC_EVENT_CODE_SLI 0x11
#define ASYNC_TRAILER_EVENT_TYPE_SHIFT 16 /* bits 16 - 23 */
#define ASYNC_TRAILER_EVENT_TYPE_MASK 0xFF
/* iSCSI events */
#define ASYNC_EVENT_NEW_ISCSI_TGT_DISC 0x4
#define ASYNC_EVENT_NEW_ISCSI_CONN 0x5
#define ASYNC_EVENT_NEW_TCP_CONN 0x7
/* SLI events */
#define ASYNC_SLI_EVENT_TYPE_MISCONFIGURED 0x9
#define ASYNC_SLI_LINK_EFFECT_VALID(le) (le & 0x80)
#define ASYNC_SLI_LINK_EFFECT_SEV(le) ((le >> 1) & 0x03)
#define ASYNC_SLI_LINK_EFFECT_STATE(le) (le & 0x01)
struct be_async_event_trailer {
u32 code;
};
enum {
ASYNC_EVENT_LINK_DOWN = 0x0,
ASYNC_EVENT_LINK_UP = 0x1,
};
/**
* When the event code of an async trailer is link-state, the mcc_compl
* must be interpreted as follows
*/
struct be_async_event_link_state {
u8 physical_port;
u8 port_link_status;
/**
* ASYNC_EVENT_LINK_DOWN 0x0
* ASYNC_EVENT_LINK_UP 0x1
* ASYNC_EVENT_LINK_LOGICAL_DOWN 0x2
* ASYNC_EVENT_LINK_LOGICAL_UP 0x3
*/
#define BE_ASYNC_LINK_UP_MASK 0x01
u8 port_duplex;
u8 port_speed;
/* BE2ISCSI_LINK_SPEED_ZERO 0x00 - no link */
#define BE2ISCSI_LINK_SPEED_10MBPS 0x01
#define BE2ISCSI_LINK_SPEED_100MBPS 0x02
#define BE2ISCSI_LINK_SPEED_1GBPS 0x03
#define BE2ISCSI_LINK_SPEED_10GBPS 0x04
#define BE2ISCSI_LINK_SPEED_25GBPS 0x06
#define BE2ISCSI_LINK_SPEED_40GBPS 0x07
u8 port_fault;
u8 event_reason;
u16 qos_link_speed;
u32 event_tag;
struct be_async_event_trailer trailer;
} __packed;
/**
* When async-trailer is SLI event, mcc_compl is interpreted as
*/
struct be_async_event_sli {
u32 event_data1;
u32 event_data2;
u32 reserved;
u32 trailer;
} __packed;
struct be_mcc_mailbox {
struct be_mcc_wrb wrb;
struct be_mcc_compl compl;
};
/* Type of subsystems supported by FW */
#define CMD_SUBSYSTEM_COMMON 0x1
#define CMD_SUBSYSTEM_ISCSI 0x2
#define CMD_SUBSYSTEM_ETH 0x3
#define CMD_SUBSYSTEM_ISCSI_INI 0x6
#define CMD_COMMON_TCP_UPLOAD 0x1
/**
* List of common opcodes subsystem CMD_SUBSYSTEM_COMMON
* These opcodes are unique for each subsystem defined above
*/
#define OPCODE_COMMON_CQ_CREATE 12
#define OPCODE_COMMON_EQ_CREATE 13
#define OPCODE_COMMON_MCC_CREATE 21
#define OPCODE_COMMON_MCC_CREATE_EXT 90
#define OPCODE_COMMON_ADD_TEMPLATE_HEADER_BUFFERS 24
#define OPCODE_COMMON_REMOVE_TEMPLATE_HEADER_BUFFERS 25
#define OPCODE_COMMON_GET_CNTL_ATTRIBUTES 32
#define OPCODE_COMMON_GET_FW_VERSION 35
#define OPCODE_COMMON_MODIFY_EQ_DELAY 41
#define OPCODE_COMMON_FIRMWARE_CONFIG 42
#define OPCODE_COMMON_MCC_DESTROY 53
#define OPCODE_COMMON_CQ_DESTROY 54
#define OPCODE_COMMON_EQ_DESTROY 55
#define OPCODE_COMMON_QUERY_FIRMWARE_CONFIG 58
#define OPCODE_COMMON_FUNCTION_RESET 61
#define OPCODE_COMMON_GET_PORT_NAME 77
/**
* LIST of opcodes that are common between Initiator and Target
* used by CMD_SUBSYSTEM_ISCSI
* These opcodes are unique for each subsystem defined above
*/
#define OPCODE_COMMON_ISCSI_CFG_POST_SGL_PAGES 2
#define OPCODE_COMMON_ISCSI_CFG_REMOVE_SGL_PAGES 3
#define OPCODE_COMMON_ISCSI_NTWK_GET_NIC_CONFIG 7
#define OPCODE_COMMON_ISCSI_NTWK_SET_VLAN 14
#define OPCODE_COMMON_ISCSI_NTWK_CONFIG_STATELESS_IP_ADDR 17
#define OPCODE_COMMON_ISCSI_NTWK_REL_STATELESS_IP_ADDR 18
#define OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR 21
#define OPCODE_COMMON_ISCSI_NTWK_GET_DEFAULT_GATEWAY 22
#define OPCODE_COMMON_ISCSI_NTWK_MODIFY_DEFAULT_GATEWAY 23
#define OPCODE_COMMON_ISCSI_NTWK_GET_ALL_IF_ID 24
#define OPCODE_COMMON_ISCSI_NTWK_GET_IF_INFO 25
#define OPCODE_COMMON_ISCSI_SET_FRAGNUM_BITS_FOR_SGL_CRA 61
#define OPCODE_COMMON_ISCSI_DEFQ_CREATE 64
#define OPCODE_COMMON_ISCSI_DEFQ_DESTROY 65
#define OPCODE_COMMON_ISCSI_WRBQ_CREATE 66
#define OPCODE_COMMON_ISCSI_WRBQ_DESTROY 67
struct be_cmd_req_hdr {
u8 opcode; /* dword 0 */
u8 subsystem; /* dword 0 */
u8 port_number; /* dword 0 */
u8 domain; /* dword 0 */
u32 timeout; /* dword 1 */
u32 request_length; /* dword 2 */
u8 version; /* dword 3 */
u8 rsvd0[3]; /* dword 3 */
};
struct be_cmd_resp_hdr {
u32 info; /* dword 0 */
u32 status; /* dword 1 */
u32 response_length; /* dword 2 */
u32 actual_resp_len; /* dword 3 */
};
struct phys_addr {
u32 lo;
u32 hi;
};
struct virt_addr {
u32 lo;
u32 hi;
};
/**************************
* BE Command definitions *
**************************/
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte - used to calculate offset/shift/mask of each field
*/
struct amap_eq_context {
u8 cidx[13]; /* dword 0 */
u8 rsvd0[3]; /* dword 0 */
u8 epidx[13]; /* dword 0 */
u8 valid; /* dword 0 */
u8 rsvd1; /* dword 0 */
u8 size; /* dword 0 */
u8 pidx[13]; /* dword 1 */
u8 rsvd2[3]; /* dword 1 */
u8 pd[10]; /* dword 1 */
u8 count[3]; /* dword 1 */
u8 solevent; /* dword 1 */
u8 stalled; /* dword 1 */
u8 armed; /* dword 1 */
u8 rsvd3[4]; /* dword 2 */
u8 func[8]; /* dword 2 */
u8 rsvd4; /* dword 2 */
u8 delaymult[10]; /* dword 2 */
u8 rsvd5[2]; /* dword 2 */
u8 phase[2]; /* dword 2 */
u8 nodelay; /* dword 2 */
u8 rsvd6[4]; /* dword 2 */
u8 rsvd7[32]; /* dword 3 */
} __packed;
struct be_cmd_req_eq_create {
struct be_cmd_req_hdr hdr; /* dw[4] */
u16 num_pages; /* sword */
u16 rsvd0; /* sword */
u8 context[sizeof(struct amap_eq_context) / 8]; /* dw[4] */
struct phys_addr pages[8];
} __packed;
struct be_cmd_resp_eq_create {
struct be_cmd_resp_hdr resp_hdr;
u16 eq_id; /* sword */
u16 rsvd0; /* sword */
} __packed;
struct be_set_eqd {
u32 eq_id;
u32 phase;
u32 delay_multiplier;
} __packed;
struct mgmt_chap_format {
u32 flags;
u8 intr_chap_name[256];
u8 intr_secret[16];
u8 target_chap_name[256];
u8 target_secret[16];
u16 intr_chap_name_length;
u16 intr_secret_length;
u16 target_chap_name_length;
u16 target_secret_length;
} __packed;
struct mgmt_auth_method_format {
u8 auth_method_type;
u8 padding[3];
struct mgmt_chap_format chap;
} __packed;
struct be_cmd_req_logout_fw_sess {
struct be_cmd_req_hdr hdr; /* dw[4] */
uint32_t session_handle;
} __packed;
struct be_cmd_resp_logout_fw_sess {
struct be_cmd_resp_hdr hdr; /* dw[4] */
#define BEISCSI_MGMT_SESSION_CLOSE 0x20
uint32_t session_status;
} __packed;
struct mgmt_conn_login_options {
u8 flags;
u8 header_digest;
u8 data_digest;
u8 rsvd0;
u32 max_recv_datasegment_len_ini;
u32 max_recv_datasegment_len_tgt;
u32 tcp_mss;
u32 tcp_window_size;
struct mgmt_auth_method_format auth_data;
} __packed;
struct ip_addr_format {
u16 size_of_structure;
u8 reserved;
u8 ip_type;
u8 addr[16];
u32 rsvd0;
} __packed;
struct mgmt_conn_info {
u32 connection_handle;
u32 connection_status;
u16 src_port;
u16 dest_port;
u16 dest_port_redirected;
u16 cid;
u32 estimated_throughput;
struct ip_addr_format src_ipaddr;
struct ip_addr_format dest_ipaddr;
struct ip_addr_format dest_ipaddr_redirected;
struct mgmt_conn_login_options negotiated_login_options;
} __packed;
struct mgmt_session_login_options {
u8 flags;
u8 error_recovery_level;
u16 rsvd0;
u32 first_burst_length;
u32 max_burst_length;
u16 max_connections;
u16 max_outstanding_r2t;
u16 default_time2wait;
u16 default_time2retain;
} __packed;
struct mgmt_session_info {
u32 session_handle;
u32 status;
u8 isid[6];
u16 tsih;
u32 session_flags;
u16 conn_count;
u16 pad;
u8 target_name[224];
u8 initiator_iscsiname[224];
struct mgmt_session_login_options negotiated_login_options;
struct mgmt_conn_info conn_list[1];
} __packed;
struct be_cmd_get_session_req {
struct be_cmd_req_hdr hdr;
u32 session_handle;
} __packed;
struct be_cmd_get_session_resp {
struct be_cmd_resp_hdr hdr;
struct mgmt_session_info session_info;
} __packed;
struct mac_addr {
u16 size_of_structure;
u8 addr[ETH_ALEN];
} __packed;
struct be_cmd_get_boot_target_req {
struct be_cmd_req_hdr hdr;
} __packed;
struct be_cmd_get_boot_target_resp {
struct be_cmd_resp_hdr hdr;
u32 boot_session_count;
int boot_session_handle;
};
struct be_cmd_reopen_session_req {
struct be_cmd_req_hdr hdr;
#define BE_REOPEN_ALL_SESSIONS 0x00
#define BE_REOPEN_BOOT_SESSIONS 0x01
#define BE_REOPEN_A_SESSION 0x02
u16 reopen_type;
u16 rsvd;
u32 session_handle;
} __packed;
struct be_cmd_reopen_session_resp {
struct be_cmd_resp_hdr hdr;
u32 rsvd;
u32 session_handle;
} __packed;
struct be_cmd_mac_query_req {
struct be_cmd_req_hdr hdr;
u8 type;
u8 permanent;
u16 if_id;
} __packed;
struct be_cmd_get_mac_resp {
struct be_cmd_resp_hdr hdr;
struct mac_addr mac;
};
struct be_ip_addr_subnet_format {
u16 size_of_structure;
u8 ip_type;
u8 ipv6_prefix_length;
u8 addr[16];
u8 subnet_mask[16];
u32 rsvd0;
} __packed;
struct be_cmd_get_if_info_req {
struct be_cmd_req_hdr hdr;
u32 interface_hndl;
u32 ip_type;
} __packed;
struct be_cmd_get_if_info_resp {
struct be_cmd_req_hdr hdr;
u32 interface_hndl;
u32 vlan_priority;
u32 ip_addr_count;
u32 dhcp_state;
struct be_ip_addr_subnet_format ip_addr;
} __packed;
struct be_ip_addr_record {
u32 action;
u32 interface_hndl;
struct be_ip_addr_subnet_format ip_addr;
u32 status;
} __packed;
struct be_ip_addr_record_params {
u32 record_entry_count;
struct be_ip_addr_record ip_record;
} __packed;
struct be_cmd_set_ip_addr_req {
struct be_cmd_req_hdr hdr;
struct be_ip_addr_record_params ip_params;
} __packed;
struct be_cmd_set_dhcp_req {
struct be_cmd_req_hdr hdr;
u32 interface_hndl;
u32 ip_type;
u32 flags;
u32 retry_count;
} __packed;
struct be_cmd_rel_dhcp_req {
struct be_cmd_req_hdr hdr;
u32 interface_hndl;
u32 ip_type;
} __packed;
struct be_cmd_set_def_gateway_req {
struct be_cmd_req_hdr hdr;
u32 action;
struct ip_addr_format ip_addr;
} __packed;
struct be_cmd_get_def_gateway_req {
struct be_cmd_req_hdr hdr;
u32 ip_type;
} __packed;
struct be_cmd_get_def_gateway_resp {
struct be_cmd_req_hdr hdr;
struct ip_addr_format ip_addr;
} __packed;
#define BEISCSI_VLAN_DISABLE 0xFFFF
struct be_cmd_set_vlan_req {
struct be_cmd_req_hdr hdr;
u32 interface_hndl;
u32 vlan_priority;
} __packed;
/******************** Create CQ ***************************/
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte - used to calculate offset/shift/mask of each field
*/
struct amap_cq_context {
u8 cidx[11]; /* dword 0 */
u8 rsvd0; /* dword 0 */
u8 coalescwm[2]; /* dword 0 */
u8 nodelay; /* dword 0 */
u8 epidx[11]; /* dword 0 */
u8 rsvd1; /* dword 0 */
u8 count[2]; /* dword 0 */
u8 valid; /* dword 0 */
u8 solevent; /* dword 0 */
u8 eventable; /* dword 0 */
u8 pidx[11]; /* dword 1 */
u8 rsvd2; /* dword 1 */
u8 pd[10]; /* dword 1 */
u8 eqid[8]; /* dword 1 */
u8 stalled; /* dword 1 */
u8 armed; /* dword 1 */
u8 rsvd3[4]; /* dword 2 */
u8 func[8]; /* dword 2 */
u8 rsvd4[20]; /* dword 2 */
u8 rsvd5[32]; /* dword 3 */
} __packed;
struct amap_cq_context_v2 {
u8 rsvd0[12]; /* dword 0 */
u8 coalescwm[2]; /* dword 0 */
u8 nodelay; /* dword 0 */
u8 rsvd1[12]; /* dword 0 */
u8 count[2]; /* dword 0 */
u8 valid; /* dword 0 */
u8 rsvd2; /* dword 0 */
u8 eventable; /* dword 0 */
u8 eqid[16]; /* dword 1 */
u8 rsvd3[15]; /* dword 1 */
u8 armed; /* dword 1 */
u8 cqecount[16];/* dword 2 */
u8 rsvd4[16]; /* dword 2 */
u8 rsvd5[32]; /* dword 3 */
};
struct be_cmd_req_cq_create {
struct be_cmd_req_hdr hdr;
u16 num_pages;
u8 page_size;
u8 rsvd0;
u8 context[sizeof(struct amap_cq_context) / 8];
struct phys_addr pages[4];
} __packed;
struct be_cmd_resp_cq_create {
struct be_cmd_resp_hdr hdr;
u16 cq_id;
u16 rsvd0;
} __packed;
/******************** Create MCCQ ***************************/
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte - used to calculate offset/shift/mask of each field
*/
struct amap_mcc_context {
u8 con_index[14];
u8 rsvd0[2];
u8 ring_size[4];
u8 fetch_wrb;
u8 fetch_r2t;
u8 cq_id[10];
u8 prod_index[14];
u8 fid[8];
u8 pdid[9];
u8 valid;
u8 rsvd1[32];
u8 rsvd2[32];
} __packed;
struct be_cmd_req_mcc_create_ext {
struct be_cmd_req_hdr hdr;
u16 num_pages;
u16 rsvd0;
u32 async_evt_bitmap;
u8 context[sizeof(struct amap_mcc_context) / 8];
struct phys_addr pages[8];
} __packed;
struct be_cmd_resp_mcc_create {
struct be_cmd_resp_hdr hdr;
u16 id;
u16 rsvd0;
} __packed;
/******************** Q Destroy ***************************/
/* Type of Queue to be destroyed */
enum {
QTYPE_EQ = 1,
QTYPE_CQ,
QTYPE_MCCQ,
QTYPE_WRBQ,
QTYPE_DPDUQ,
QTYPE_SGL
};
struct be_cmd_req_q_destroy {
struct be_cmd_req_hdr hdr;
u16 id;
u16 bypass_flush; /* valid only for rx q destroy */
} __packed;
struct macaddr {
u8 byte[ETH_ALEN];
};
struct be_cmd_req_mcast_mac_config {
struct be_cmd_req_hdr hdr;
u16 num_mac;
u8 promiscuous;
u8 interface_id;
struct macaddr mac[32];
} __packed;
static inline void *embedded_payload(struct be_mcc_wrb *wrb)
{
return wrb->payload.embedded_payload;
}
static inline struct be_sge *nonembedded_sgl(struct be_mcc_wrb *wrb)
{
return &wrb->payload.sgl[0];
}
/******************** Modify EQ Delay *******************/
struct be_cmd_req_modify_eq_delay {
struct be_cmd_req_hdr hdr;
__le32 num_eq;
struct {
__le32 eq_id;
__le32 phase;
__le32 delay_multiplier;
} delay[MAX_CPUS];
} __packed;
/******************** Get MAC ADDR *******************/
struct be_cmd_get_nic_conf_resp {
struct be_cmd_resp_hdr hdr;
u32 nic_port_count;
u32 speed;
u32 max_speed;
u32 link_state;
u32 max_frame_size;
u16 size_of_structure;
u8 mac_address[ETH_ALEN];
} __packed;
#define BEISCSI_ALIAS_LEN 32
struct be_cmd_hba_name {
struct be_cmd_req_hdr hdr;
u16 flags;
u16 rsvd0;
u8 initiator_name[ISCSI_NAME_LEN];
u8 initiator_alias[BEISCSI_ALIAS_LEN];
} __packed;
int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
struct be_queue_info *eq, int eq_delay);
int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
struct be_queue_info *cq, struct be_queue_info *eq,
bool sol_evts, bool no_delay,
int num_cqe_dma_coalesce);
int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
int type);
int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
struct be_queue_info *mccq,
struct be_queue_info *cq);
int be_poll_mcc(struct be_ctrl_info *ctrl);
int mgmt_check_supported_fw(struct be_ctrl_info *ctrl,
struct beiscsi_hba *phba);
unsigned int be_cmd_get_initname(struct beiscsi_hba *phba);
void free_mcc_wrb(struct be_ctrl_info *ctrl, unsigned int tag);
int be_cmd_modify_eq_delay(struct beiscsi_hba *phba, struct be_set_eqd *,
int num);
int beiscsi_mccq_compl_wait(struct beiscsi_hba *phba,
uint32_t tag, struct be_mcc_wrb **wrb,
struct be_dma_mem *mbx_cmd_mem);
/*ISCSI Functuions */
int be_cmd_fw_initialize(struct be_ctrl_info *ctrl);
int be_cmd_fw_uninit(struct be_ctrl_info *ctrl);
struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem);
int be_mcc_compl_poll(struct beiscsi_hba *phba, unsigned int tag);
void be_mcc_notify(struct beiscsi_hba *phba, unsigned int tag);
struct be_mcc_wrb *alloc_mcc_wrb(struct beiscsi_hba *phba,
unsigned int *ref_tag);
void beiscsi_process_async_event(struct beiscsi_hba *phba,
struct be_mcc_compl *compl);
int beiscsi_process_mcc_compl(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl);
int be_mbox_notify(struct be_ctrl_info *ctrl);
int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
struct be_queue_info *cq,
struct be_queue_info *dq, int length,
int entry_size, uint8_t is_header,
uint8_t ulp_num);
int be_cmd_iscsi_post_template_hdr(struct be_ctrl_info *ctrl,
struct be_dma_mem *q_mem);
int be_cmd_iscsi_remove_template_hdr(struct be_ctrl_info *ctrl);
int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
struct be_dma_mem *q_mem, u32 page_offset,
u32 num_pages);
int beiscsi_cmd_reset_function(struct beiscsi_hba *phba);
int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem,
struct be_queue_info *wrbq,
struct hwi_wrb_context *pwrb_context,
uint8_t ulp_num);
/* Configuration Functions */
int be_cmd_set_vlan(struct beiscsi_hba *phba, uint16_t vlan_tag);
struct be_default_pdu_context {
u32 dw[4];
} __packed;
struct amap_be_default_pdu_context {
u8 dbuf_cindex[13]; /* dword 0 */
u8 rsvd0[3]; /* dword 0 */
u8 ring_size[4]; /* dword 0 */
u8 ring_state[4]; /* dword 0 */
u8 rsvd1[8]; /* dword 0 */
u8 dbuf_pindex[13]; /* dword 1 */
u8 rsvd2; /* dword 1 */
u8 pci_func_id[8]; /* dword 1 */
u8 rx_pdid[9]; /* dword 1 */
u8 rx_pdid_valid; /* dword 1 */
u8 default_buffer_size[16]; /* dword 2 */
u8 cq_id_recv[10]; /* dword 2 */
u8 rx_pdid_not_valid; /* dword 2 */
u8 rsvd3[5]; /* dword 2 */
u8 rsvd4[32]; /* dword 3 */
} __packed;
struct amap_default_pdu_context_ext {
u8 rsvd0[16]; /* dword 0 */
u8 ring_size[4]; /* dword 0 */
u8 rsvd1[12]; /* dword 0 */
u8 rsvd2[22]; /* dword 1 */
u8 rx_pdid[9]; /* dword 1 */
u8 rx_pdid_valid; /* dword 1 */
u8 default_buffer_size[16]; /* dword 2 */
u8 cq_id_recv[16]; /* dword 2 */
u8 rsvd3[32]; /* dword 3 */
} __packed;
struct be_defq_create_req {
struct be_cmd_req_hdr hdr;
u16 num_pages;
u8 ulp_num;
#define BEISCSI_DUAL_ULP_AWARE_BIT 0 /* Byte 3 - Bit 0 */
#define BEISCSI_BIND_Q_TO_ULP_BIT 1 /* Byte 3 - Bit 1 */
u8 dua_feature;
struct be_default_pdu_context context;
struct phys_addr pages[8];
} __packed;
struct be_defq_create_resp {
struct be_cmd_req_hdr hdr;
u16 id;
u8 rsvd0;
u8 ulp_num;
u32 doorbell_offset;
u16 register_set;
u16 doorbell_format;
} __packed;
struct be_post_template_pages_req {
struct be_cmd_req_hdr hdr;
u16 num_pages;
#define BEISCSI_TEMPLATE_HDR_TYPE_ISCSI 0x1
u16 type;
struct phys_addr scratch_pa;
struct virt_addr scratch_va;
struct virt_addr pages_va;
struct phys_addr pages[16];
} __packed;
struct be_remove_template_pages_req {
struct be_cmd_req_hdr hdr;
u16 type;
u16 rsvd0;
} __packed;
struct be_post_sgl_pages_req {
struct be_cmd_req_hdr hdr;
u16 num_pages;
u16 page_offset;
u32 rsvd0;
struct phys_addr pages[26];
u32 rsvd1;
} __packed;
struct be_wrbq_create_req {
struct be_cmd_req_hdr hdr;
u16 num_pages;
u8 ulp_num;
u8 dua_feature;
struct phys_addr pages[8];
} __packed;
struct be_wrbq_create_resp {
struct be_cmd_resp_hdr resp_hdr;
u16 cid;
u8 rsvd0;
u8 ulp_num;
u32 doorbell_offset;
u16 register_set;
u16 doorbell_format;
} __packed;
#define SOL_CID_MASK 0x0000FFC0
#define SOL_CODE_MASK 0x0000003F
#define SOL_WRB_INDEX_MASK 0x00FF0000
#define SOL_CMD_WND_MASK 0xFF000000
#define SOL_RES_CNT_MASK 0x7FFFFFFF
#define SOL_EXP_CMD_SN_MASK 0xFFFFFFFF
#define SOL_HW_STS_MASK 0x000000FF
#define SOL_STS_MASK 0x0000FF00
#define SOL_RESP_MASK 0x00FF0000
#define SOL_FLAGS_MASK 0x7F000000
#define SOL_S_MASK 0x80000000
struct sol_cqe {
u32 dw[4];
};
struct amap_sol_cqe {
u8 hw_sts[8]; /* dword 0 */
u8 i_sts[8]; /* dword 0 */
u8 i_resp[8]; /* dword 0 */
u8 i_flags[7]; /* dword 0 */
u8 s; /* dword 0 */
u8 i_exp_cmd_sn[32]; /* dword 1 */
u8 code[6]; /* dword 2 */
u8 cid[10]; /* dword 2 */
u8 wrb_index[8]; /* dword 2 */
u8 i_cmd_wnd[8]; /* dword 2 */
u8 i_res_cnt[31]; /* dword 3 */
u8 valid; /* dword 3 */
} __packed;
#define SOL_ICD_INDEX_MASK 0x0003FFC0
struct amap_sol_cqe_ring {
u8 hw_sts[8]; /* dword 0 */
u8 i_sts[8]; /* dword 0 */
u8 i_resp[8]; /* dword 0 */
u8 i_flags[7]; /* dword 0 */
u8 s; /* dword 0 */
u8 i_exp_cmd_sn[32]; /* dword 1 */
u8 code[6]; /* dword 2 */
u8 icd_index[12]; /* dword 2 */
u8 rsvd[6]; /* dword 2 */
u8 i_cmd_wnd[8]; /* dword 2 */
u8 i_res_cnt[31]; /* dword 3 */
u8 valid; /* dword 3 */
} __packed;
struct amap_sol_cqe_v2 {
u8 hw_sts[8]; /* dword 0 */
u8 i_sts[8]; /* dword 0 */
u8 wrb_index[16]; /* dword 0 */
u8 i_exp_cmd_sn[32]; /* dword 1 */
u8 code[6]; /* dword 2 */
u8 cmd_cmpl; /* dword 2 */
u8 rsvd0; /* dword 2 */
u8 i_cmd_wnd[8]; /* dword 2 */
u8 cid[13]; /* dword 2 */
u8 u; /* dword 2 */
u8 o; /* dword 2 */
u8 s; /* dword 2 */
u8 i_res_cnt[31]; /* dword 3 */
u8 valid; /* dword 3 */
} __packed;
struct common_sol_cqe {
u32 exp_cmdsn;
u32 res_cnt;
u16 wrb_index;
u16 cid;
u8 hw_sts;
u8 cmd_wnd;
u8 res_flag; /* the s feild of structure */
u8 i_resp; /* for skh if cmd_complete is set then i_sts is response */
u8 i_flags; /* for skh or the u and o feilds */
u8 i_sts; /* for skh if cmd_complete is not-set then i_sts is status */
};
/*** iSCSI ack/driver message completions ***/
struct amap_it_dmsg_cqe {
u8 ack_num[32]; /* DWORD 0 */
u8 pdu_bytes_rcvd[32]; /* DWORD 1 */
u8 code[6]; /* DWORD 2 */
u8 cid[10]; /* DWORD 2 */
u8 wrb_idx[8]; /* DWORD 2 */
u8 rsvd0[8]; /* DWORD 2*/
u8 rsvd1[31]; /* DWORD 3*/
u8 valid; /* DWORD 3 */
} __packed;
struct amap_it_dmsg_cqe_v2 {
u8 ack_num[32]; /* DWORD 0 */
u8 pdu_bytes_rcvd[32]; /* DWORD 1 */
u8 code[6]; /* DWORD 2 */
u8 rsvd0[10]; /* DWORD 2 */
u8 wrb_idx[16]; /* DWORD 2 */
u8 rsvd1[16]; /* DWORD 3 */
u8 cid[13]; /* DWORD 3 */
u8 rsvd2[2]; /* DWORD 3 */
u8 valid; /* DWORD 3 */
} __packed;
/**
* Post WRB Queue Doorbell Register used by the host Storage
* stack to notify the
* controller of a posted Work Request Block
*/
#define DB_WRB_POST_CID_MASK 0xFFFF /* bits 0 - 16 */
#define DB_DEF_PDU_WRB_INDEX_MASK 0xFF /* bits 0 - 9 */
#define DB_DEF_PDU_WRB_INDEX_SHIFT 16
#define DB_DEF_PDU_NUM_POSTED_SHIFT 24
struct fragnum_bits_for_sgl_cra_in {
struct be_cmd_req_hdr hdr;
u32 num_bits;
} __packed;
struct iscsi_cleanup_req {
struct be_cmd_req_hdr hdr;
u16 chute;
u8 hdr_ring_id;
u8 data_ring_id;
} __packed;
struct eq_delay {
u32 eq_id;
u32 phase;
u32 delay_multiplier;
} __packed;
struct be_eq_delay_params_in {
struct be_cmd_req_hdr hdr;
u32 num_eq;
struct eq_delay delay[8];
} __packed;
struct tcp_connect_and_offload_in {
struct be_cmd_req_hdr hdr;
struct ip_addr_format ip_address;
u16 tcp_port;
u16 cid;
u16 cq_id;
u16 defq_id;
struct phys_addr dataout_template_pa;
u16 hdr_ring_id;
u16 data_ring_id;
u8 do_offload;
u8 rsvd0[3];
} __packed;
struct tcp_connect_and_offload_in_v1 {
struct be_cmd_req_hdr hdr;
struct ip_addr_format ip_address;
u16 tcp_port;
u16 cid;
u16 cq_id;
u16 defq_id;
struct phys_addr dataout_template_pa;
u16 hdr_ring_id;
u16 data_ring_id;
u8 do_offload;
u8 ifd_state;
u8 rsvd0[2];
u16 tcp_window_size;
u8 tcp_window_scale_count;
u8 rsvd1;
u32 tcp_mss:24;
u8 rsvd2;
} __packed;
struct tcp_connect_and_offload_out {
struct be_cmd_resp_hdr hdr;
u32 connection_handle;
u16 cid;
u16 rsvd0;
} __packed;
struct be_mcc_wrb_context {
struct MCC_WRB *wrb;
int *users_final_status;
} __packed;
#define DB_DEF_PDU_RING_ID_MASK 0x3FFF /* bits 0 - 13 */
#define DB_DEF_PDU_CQPROC_MASK 0x3FFF /* bits 16 - 29 */
#define DB_DEF_PDU_REARM_SHIFT 14
#define DB_DEF_PDU_EVENT_SHIFT 15
#define DB_DEF_PDU_CQPROC_SHIFT 16
struct dmsg_cqe {
u32 dw[4];
} __packed;
struct tcp_upload_params_in {
struct be_cmd_req_hdr hdr;
u16 id;
u16 upload_type;
u32 reset_seq;
} __packed;
struct tcp_upload_params_out {
u32 dw[32];
} __packed;
union tcp_upload_params {
struct tcp_upload_params_in request;
struct tcp_upload_params_out response;
} __packed;
struct be_ulp_fw_cfg {
#define BEISCSI_ULP_ISCSI_INI_MODE 0x10
u32 ulp_mode;
u32 etx_base;
u32 etx_count;
u32 sq_base;
u32 sq_count;
u32 rq_base;
u32 rq_count;
u32 dq_base;
u32 dq_count;
u32 lro_base;
u32 lro_count;
u32 icd_base;
u32 icd_count;
};
struct be_ulp_chain_icd {
u32 chain_base;
u32 chain_count;
};
struct be_fw_cfg {
struct be_cmd_req_hdr hdr;
u32 be_config_number;
u32 asic_revision;
u32 phys_port;
#define BEISCSI_FUNC_ISCSI_INI_MODE 0x10
#define BEISCSI_FUNC_DUA_MODE 0x800
u32 function_mode;
struct be_ulp_fw_cfg ulp[2];
u32 function_caps;
u32 cqid_base;
u32 cqid_count;
u32 eqid_base;
u32 eqid_count;
struct be_ulp_chain_icd chain_icd[2];
} __packed;
struct be_cmd_get_all_if_id_req {
struct be_cmd_req_hdr hdr;
u32 if_count;
u32 if_hndl_list[1];
} __packed;
struct be_cmd_get_port_name {
union {
struct be_cmd_req_hdr req_hdr;
struct be_cmd_resp_hdr resp_hdr;
} h;
union {
struct {
u32 reserved;
} req;
struct {
u32 port_names;
} resp;
} p;
} __packed;
#define ISCSI_OPCODE_SCSI_DATA_OUT 5
#define OPCODE_COMMON_NTWK_LINK_STATUS_QUERY 5
#define OPCODE_COMMON_MODIFY_EQ_DELAY 41
#define OPCODE_COMMON_ISCSI_CLEANUP 59
#define OPCODE_COMMON_TCP_UPLOAD 56
#define OPCODE_COMMON_ISCSI_TCP_CONNECT_AND_OFFLOAD 70
#define OPCODE_COMMON_ISCSI_ERROR_RECOVERY_INVALIDATE_COMMANDS 1
#define OPCODE_ISCSI_INI_CFG_GET_HBA_NAME 6
#define OPCODE_ISCSI_INI_CFG_SET_HBA_NAME 7
#define OPCODE_ISCSI_INI_SESSION_GET_A_SESSION 14
#define OPCODE_ISCSI_INI_SESSION_LOGOUT_TARGET 24
#define OPCODE_ISCSI_INI_DRIVER_REOPEN_ALL_SESSIONS 36
#define OPCODE_ISCSI_INI_DRIVER_OFFLOAD_SESSION 41
#define OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION 42
#define OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET 52
#define OPCODE_COMMON_WRITE_FLASH 96
#define OPCODE_COMMON_READ_FLASH 97
/* --- CMD_ISCSI_INVALIDATE_CONNECTION_TYPE --- */
#define CMD_ISCSI_COMMAND_INVALIDATE 1
#define CMD_ISCSI_CONNECTION_INVALIDATE 0x8001
#define CMD_ISCSI_CONNECTION_ISSUE_TCP_RST 0x8002
#define INI_WR_CMD 1 /* Initiator write command */
#define INI_TMF_CMD 2 /* Initiator TMF command */
#define INI_NOPOUT_CMD 3 /* Initiator; Send a NOP-OUT */
#define INI_RD_CMD 5 /* Initiator requesting to send
* a read command
*/
#define TGT_CTX_UPDT_CMD 7 /* Target context update */
#define TGT_STS_CMD 8 /* Target R2T and other BHS
* where only the status number
* need to be updated
*/
#define TGT_DATAIN_CMD 9 /* Target Data-Ins in response
* to read command
*/
#define TGT_SOS_PDU 10 /* Target:standalone status
* response
*/
#define TGT_DM_CMD 11 /* Indicates that the bhs
* preparedby
* driver should not be touched
*/
/* --- CMD_CHUTE_TYPE --- */
#define CMD_CONNECTION_CHUTE_0 1
#define CMD_CONNECTION_CHUTE_1 2
#define CMD_CONNECTION_CHUTE_2 3
#define EQ_MAJOR_CODE_COMPLETION 0
#define CMD_ISCSI_SESSION_DEL_CFG_FROM_FLASH 0
#define CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH 1
/* --- CONNECTION_UPLOAD_PARAMS --- */
/* These parameters are used to define the type of upload desired. */
#define CONNECTION_UPLOAD_GRACEFUL 1 /* Graceful upload */
#define CONNECTION_UPLOAD_ABORT_RESET 2 /* Abortive upload with
* reset
*/
#define CONNECTION_UPLOAD_ABORT 3 /* Abortive upload without
* reset
*/
#define CONNECTION_UPLOAD_ABORT_WITH_SEQ 4 /* Abortive upload with reset,
* sequence number by driver */
/* Returns the number of items in the field array. */
#define BE_NUMBER_OF_FIELD(_type_, _field_) \
(FIELD_SIZEOF(_type_, _field_)/sizeof((((_type_ *)0)->_field_[0])))\
/**
* Different types of iSCSI completions to host driver for both initiator
* and taget mode
* of operation.
*/
#define SOL_CMD_COMPLETE 1 /* Solicited command completed
* normally
*/
#define SOL_CMD_KILLED_DATA_DIGEST_ERR 2 /* Solicited command got
* invalidated internally due
* to Data Digest error
*/
#define CXN_KILLED_PDU_SIZE_EXCEEDS_DSL 3 /* Connection got invalidated
* internally
* due to a received PDU
* size > DSL
*/
#define CXN_KILLED_BURST_LEN_MISMATCH 4 /* Connection got invalidated
* internally due ti received
* PDU sequence size >
* FBL/MBL.
*/
#define CXN_KILLED_AHS_RCVD 5 /* Connection got invalidated
* internally due to a received
* PDU Hdr that has
* AHS */
#define CXN_KILLED_HDR_DIGEST_ERR 6 /* Connection got invalidated
* internally due to Hdr Digest
* error
*/
#define CXN_KILLED_UNKNOWN_HDR 7 /* Connection got invalidated
* internally
* due to a bad opcode in the
* pdu hdr
*/
#define CXN_KILLED_STALE_ITT_TTT_RCVD 8 /* Connection got invalidated
* internally due to a received
* ITT/TTT that does not belong
* to this Connection
*/
#define CXN_KILLED_INVALID_ITT_TTT_RCVD 9 /* Connection got invalidated
* internally due to received
* ITT/TTT value > Max
* Supported ITTs/TTTs
*/
#define CXN_KILLED_RST_RCVD 10 /* Connection got invalidated
* internally due to an
* incoming TCP RST
*/
#define CXN_KILLED_TIMED_OUT 11 /* Connection got invalidated
* internally due to timeout on
* tcp segment 12 retransmit
* attempts failed
*/
#define CXN_KILLED_RST_SENT 12 /* Connection got invalidated
* internally due to TCP RST
* sent by the Tx side
*/
#define CXN_KILLED_FIN_RCVD 13 /* Connection got invalidated
* internally due to an
* incoming TCP FIN.
*/
#define CXN_KILLED_BAD_UNSOL_PDU_RCVD 14 /* Connection got invalidated
* internally due to bad
* unsolicited PDU Unsolicited
* PDUs are PDUs with
* ITT=0xffffffff
*/
#define CXN_KILLED_BAD_WRB_INDEX_ERROR 15 /* Connection got invalidated
* internally due to bad WRB
* index.
*/
#define CXN_KILLED_OVER_RUN_RESIDUAL 16 /* Command got invalidated
* internally due to received
* command has residual
* over run bytes.
*/
#define CXN_KILLED_UNDER_RUN_RESIDUAL 17 /* Command got invalidated
* internally due to received
* command has residual under
* run bytes.
*/
#define CMD_KILLED_INVALID_STATSN_RCVD 18 /* Command got invalidated
* internally due to a received
* PDU has an invalid StatusSN
*/
#define CMD_KILLED_INVALID_R2T_RCVD 19 /* Command got invalidated
* internally due to a received
* an R2T with some invalid
* fields in it
*/
#define CMD_CXN_KILLED_LUN_INVALID 20 /* Command got invalidated
* internally due to received
* PDU has an invalid LUN.
*/
#define CMD_CXN_KILLED_ICD_INVALID 21 /* Command got invalidated
* internally due to the
* corresponding ICD not in a
* valid state
*/
#define CMD_CXN_KILLED_ITT_INVALID 22 /* Command got invalidated due
* to received PDU has an
* invalid ITT.
*/
#define CMD_CXN_KILLED_SEQ_OUTOFORDER 23 /* Command got invalidated due
* to received sequence buffer
* offset is out of order.
*/
#define CMD_CXN_KILLED_INVALID_DATASN_RCVD 24 /* Command got invalidated
* internally due to a
* received PDU has an invalid
* DataSN
*/
#define CXN_INVALIDATE_NOTIFY 25 /* Connection invalidation
* completion notify.
*/
#define CXN_INVALIDATE_INDEX_NOTIFY 26 /* Connection invalidation
* completion
* with data PDU index.
*/
#define CMD_INVALIDATED_NOTIFY 27 /* Command invalidation
* completionnotifify.
*/
#define UNSOL_HDR_NOTIFY 28 /* Unsolicited header notify.*/
#define UNSOL_DATA_NOTIFY 29 /* Unsolicited data notify.*/
#define UNSOL_DATA_DIGEST_ERROR_NOTIFY 30 /* Unsolicited data digest
* error notify.
*/
#define DRIVERMSG_NOTIFY 31 /* TCP acknowledge based
* notification.
*/
#define CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN 32 /* Connection got invalidated
* internally due to command
* and data are not on same
* connection.
*/
#define SOL_CMD_KILLED_DIF_ERR 33 /* Solicited command got
* invalidated internally due
* to DIF error
*/
#define CXN_KILLED_SYN_RCVD 34 /* Connection got invalidated
* internally due to incoming
* TCP SYN
*/
#define CXN_KILLED_IMM_DATA_RCVD 35 /* Connection got invalidated
* internally due to an
* incoming Unsolicited PDU
* that has immediate data on
* the cxn
*/
int beiscsi_pci_soft_reset(struct beiscsi_hba *phba);
int be_chk_reset_complete(struct beiscsi_hba *phba);
void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
bool embedded, u8 sge_cnt);
void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
u8 subsystem, u8 opcode, int cmd_len);
void beiscsi_fail_session(struct iscsi_cls_session *cls_session);
#endif /* !BEISCSI_CMDS_H */
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