drivers/scsi/qedf/qedf_hsi.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  QLogic FCoE Offload Driver
   4  *  Copyright (c) 2016-2018 Cavium Inc.
   5  */
   6 #ifndef __QEDF_HSI__
   7 #define __QEDF_HSI__
   8 /*
   9  * Add include to common target
  10  */
  11 #include <linux/qed/common_hsi.h>
  12
  13 /*
  14  * Add include to common storage target
  15  */
  16 #include <linux/qed/storage_common.h>
  17
  18 /*
  19  * Add include to common fcoe target for both eCore and protocol driver
  20  */
  21 #include <linux/qed/fcoe_common.h>
  22
  23
  24 /*
  25  * FCoE CQ element ABTS information
  26  */
  27 struct fcoe_abts_info {
  28         u8 r_ctl /* R_CTL in the ABTS response frame */;
  29         u8 reserved0;
  30         __le16 rx_id;
  31         __le32 reserved2[2];
  32         __le32 fc_payload[3] /* ABTS FC payload response frame */;
  33 };
  34
  35
  36 /*
  37  * FCoE class type
  38  */
  39 enum fcoe_class_type {
  40         FCOE_TASK_CLASS_TYPE_3,
  41         FCOE_TASK_CLASS_TYPE_2,
  42         MAX_FCOE_CLASS_TYPE
  43 };
  44
  45
  46 /*
  47  * FCoE CMDQ element control information
  48  */
  49 struct fcoe_cmdqe_control {
  50         __le16 conn_id;
  51         u8 num_additional_cmdqes;
  52         u8 cmdType;
  53         /* true for ABTS request cmdqe. used in Target mode */
  54 #define FCOE_CMDQE_CONTROL_ABTSREQCMD_MASK  0x1
  55 #define FCOE_CMDQE_CONTROL_ABTSREQCMD_SHIFT 0
  56 #define FCOE_CMDQE_CONTROL_RESERVED1_MASK   0x7F
  57 #define FCOE_CMDQE_CONTROL_RESERVED1_SHIFT  1
  58         u8 reserved2[4];
  59 };
  60
  61 /*
  62  * FCoE control + payload CMDQ element
  63  */
  64 struct fcoe_cmdqe {
  65         struct fcoe_cmdqe_control hdr;
  66         u8 fc_header[24];
  67         __le32 fcp_cmd_payload[8];
  68 };
  69
  70
  71
  72 /*
  73  * FCP RSP flags
  74  */
  75 struct fcoe_fcp_rsp_flags {
  76         u8 flags;
  77 #define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID_MASK  0x1
  78 #define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID_SHIFT 0
  79 #define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID_MASK  0x1
  80 #define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID_SHIFT 1
  81 #define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER_MASK     0x1
  82 #define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER_SHIFT    2
  83 #define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER_MASK    0x1
  84 #define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER_SHIFT   3
  85 #define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ_MASK       0x1
  86 #define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ_SHIFT      4
  87 #define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS_MASK     0x7
  88 #define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS_SHIFT    5
  89 };
  90
  91 /*
  92  * FCoE CQ element response information
  93  */
  94 struct fcoe_cqe_rsp_info {
  95         struct fcoe_fcp_rsp_flags rsp_flags;
  96         u8 scsi_status_code;
  97         __le16 retry_delay_timer;
  98         __le32 fcp_resid;
  99         __le32 fcp_sns_len;
 100         __le32 fcp_rsp_len;
 101         __le16 rx_id;
 102         u8 fw_error_flags;
 103 #define FCOE_CQE_RSP_INFO_FW_UNDERRUN_MASK  0x1 /* FW detected underrun */
 104 #define FCOE_CQE_RSP_INFO_FW_UNDERRUN_SHIFT 0
 105 #define FCOE_CQE_RSP_INFO_RESREVED_MASK     0x7F
 106 #define FCOE_CQE_RSP_INFO_RESREVED_SHIFT    1
 107         u8 reserved;
 108         __le32 fw_residual /* Residual bytes calculated by FW */;
 109 };
 110
 111 /*
 112  * FCoE CQ element Target completion information
 113  */
 114 struct fcoe_cqe_target_info {
 115         __le16 rx_id;
 116         __le16 reserved0;
 117         __le32 reserved1[5];
 118 };
 119
 120 /*
 121  * FCoE error/warning reporting entry
 122  */
 123 struct fcoe_err_report_entry {
 124         __le32 err_warn_bitmap_lo /* Error bitmap lower 32 bits */;
 125         __le32 err_warn_bitmap_hi /* Error bitmap higher 32 bits */;
 126         /* Buffer offset the beginning of the Sequence last transmitted */
 127         __le32 tx_buf_off;
 128         /* Buffer offset from the beginning of the Sequence last received */
 129         __le32 rx_buf_off;
 130         __le16 rx_id /* RX_ID of the associated task */;
 131         __le16 reserved1;
 132         __le32 reserved2;
 133 };
 134
 135 /*
 136  * FCoE CQ element middle path information
 137  */
 138 struct fcoe_cqe_midpath_info {
 139         __le32 data_placement_size;
 140         __le16 rx_id;
 141         __le16 reserved0;
 142         __le32 reserved1[4];
 143 };
 144
 145 /*
 146  * FCoE CQ element unsolicited information
 147  */
 148 struct fcoe_unsolic_info {
 149         /* BD information: Physical address and opaque data */
 150         struct scsi_bd bd_info;
 151         __le16 conn_id /* Connection ID the frame is associated to */;
 152         __le16 pkt_len /* Packet length */;
 153         u8 reserved1[4];
 154 };
 155
 156 /*
 157  * FCoE warning reporting entry
 158  */
 159 struct fcoe_warning_report_entry {
 160         /* BD information: Physical address and opaque data */
 161         struct scsi_bd bd_info;
 162         /* Buffer offset the beginning of the Sequence last transmitted */
 163         __le32 buf_off;
 164         __le16 rx_id /* RX_ID of the associated task */;
 165         __le16 reserved1;
 166 };
 167
 168 /*
 169  * FCoE CQ element information
 170  */
 171 union fcoe_cqe_info {
 172         struct fcoe_cqe_rsp_info rsp_info /* Response completion information */;
 173         /* Target completion information */
 174         struct fcoe_cqe_target_info target_info;
 175         /* Error completion information */
 176         struct fcoe_err_report_entry err_info;
 177         struct fcoe_abts_info abts_info /* ABTS completion information */;
 178         /* Middle path completion information */
 179         struct fcoe_cqe_midpath_info midpath_info;
 180         /* Unsolicited packet completion information */
 181         struct fcoe_unsolic_info unsolic_info;
 182         /* Warning completion information (Rec Tov expiration) */
 183         struct fcoe_warning_report_entry warn_info;
 184 };
 185
 186 /*
 187  * FCoE CQ element
 188  */
 189 struct fcoe_cqe {
 190         __le32 cqe_data;
 191         /* The task identifier (OX_ID) to be completed */
 192 #define FCOE_CQE_TASK_ID_MASK    0xFFFF
 193 #define FCOE_CQE_TASK_ID_SHIFT   0
 194         /*
 195          * The CQE type: 0x0 Indicating on a pending work request completion.
 196          * 0x1 - Indicating on an unsolicited event notification. use enum
 197          * fcoe_cqe_type  (use enum fcoe_cqe_type)
 198          */
 199 #define FCOE_CQE_CQE_TYPE_MASK   0xF
 200 #define FCOE_CQE_CQE_TYPE_SHIFT  16
 201 #define FCOE_CQE_RESERVED0_MASK  0xFFF
 202 #define FCOE_CQE_RESERVED0_SHIFT 20
 203         __le16 reserved1;
 204         __le16 fw_cq_prod;
 205         union fcoe_cqe_info cqe_info;
 206 };
 207
 208 /*
 209  * FCoE CQE type
 210  */
 211 enum fcoe_cqe_type {
 212         /* solicited response on a R/W or middle-path SQE */
 213         FCOE_GOOD_COMPLETION_CQE_TYPE,
 214         FCOE_UNSOLIC_CQE_TYPE /* unsolicited packet, RQ consumed */,
 215         FCOE_ERROR_DETECTION_CQE_TYPE /* timer expiration, validation error */,
 216         FCOE_WARNING_CQE_TYPE /* rec_tov or rr_tov timer expiration */,
 217         FCOE_EXCH_CLEANUP_CQE_TYPE /* task cleanup completed */,
 218         FCOE_ABTS_CQE_TYPE /* ABTS received and task cleaned */,
 219         FCOE_DUMMY_CQE_TYPE /* just increment SQ CONS */,
 220         /* Task was completed wight after sending a pkt to the target */
 221         FCOE_LOCAL_COMP_CQE_TYPE,
 222         MAX_FCOE_CQE_TYPE
 223 };
 224
 225 /*
 226  * FCoE fast path error codes
 227  */
 228 enum fcoe_fp_error_warning_code {
 229         FCOE_ERROR_CODE_XFER_OOO_RO /* XFER error codes */,
 230         FCOE_ERROR_CODE_XFER_RO_NOT_ALIGNED,
 231         FCOE_ERROR_CODE_XFER_NULL_BURST_LEN,
 232         FCOE_ERROR_CODE_XFER_RO_GREATER_THAN_DATA2TRNS,
 233         FCOE_ERROR_CODE_XFER_INVALID_PAYLOAD_SIZE,
 234         FCOE_ERROR_CODE_XFER_TASK_TYPE_NOT_WRITE,
 235         FCOE_ERROR_CODE_XFER_PEND_XFER_SET,
 236         FCOE_ERROR_CODE_XFER_OPENED_SEQ,
 237         FCOE_ERROR_CODE_XFER_FCTL,
 238         FCOE_ERROR_CODE_FCP_RSP_BIDI_FLAGS_SET /* FCP RSP error codes */,
 239         FCOE_ERROR_CODE_FCP_RSP_INVALID_LENGTH_FIELD,
 240         FCOE_ERROR_CODE_FCP_RSP_INVALID_SNS_FIELD,
 241         FCOE_ERROR_CODE_FCP_RSP_INVALID_PAYLOAD_SIZE,
 242         FCOE_ERROR_CODE_FCP_RSP_PEND_XFER_SET,
 243         FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ,
 244         FCOE_ERROR_CODE_FCP_RSP_FCTL,
 245         FCOE_ERROR_CODE_FCP_RSP_LAST_SEQ_RESET,
 246         FCOE_ERROR_CODE_FCP_RSP_CONF_REQ_NOT_SUPPORTED_YET,
 247         FCOE_ERROR_CODE_DATA_OOO_RO /* FCP DATA error codes */,
 248         FCOE_ERROR_CODE_DATA_EXCEEDS_DEFINED_MAX_FRAME_SIZE,
 249         FCOE_ERROR_CODE_DATA_EXCEEDS_DATA2TRNS,
 250         FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET,
 251         FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET,
 252         FCOE_ERROR_CODE_DATA_EOFN_END_SEQ_SET,
 253         FCOE_ERROR_CODE_DATA_EOFT_END_SEQ_RESET,
 254         FCOE_ERROR_CODE_DATA_TASK_TYPE_NOT_READ,
 255         FCOE_ERROR_CODE_DATA_FCTL_INITIATIR,
 256         FCOE_ERROR_CODE_MIDPATH_INVALID_TYPE /* Middle path error codes */,
 257         FCOE_ERROR_CODE_MIDPATH_SOFI3_SEQ_ACTIVE_SET,
 258         FCOE_ERROR_CODE_MIDPATH_SOFN_SEQ_ACTIVE_RESET,
 259         FCOE_ERROR_CODE_MIDPATH_EOFN_END_SEQ_SET,
 260         FCOE_ERROR_CODE_MIDPATH_EOFT_END_SEQ_RESET,
 261         FCOE_ERROR_CODE_MIDPATH_REPLY_FCTL,
 262         FCOE_ERROR_CODE_MIDPATH_INVALID_REPLY,
 263         FCOE_ERROR_CODE_MIDPATH_ELS_REPLY_RCTL,
 264         FCOE_ERROR_CODE_COMMON_MIDDLE_FRAME_WITH_PAD /* Common error codes */,
 265         FCOE_ERROR_CODE_COMMON_SEQ_INIT_IN_TCE,
 266         FCOE_ERROR_CODE_COMMON_FC_HDR_RX_ID_MISMATCH,
 267         FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT,
 268         FCOE_ERROR_CODE_COMMON_DATA_FC_HDR_FCP_TYPE_MISMATCH,
 269         FCOE_ERROR_CODE_COMMON_DATA_NO_MORE_SGES,
 270         FCOE_ERROR_CODE_COMMON_OPTIONAL_FC_HDR,
 271         FCOE_ERROR_CODE_COMMON_READ_TCE_OX_ID_TOO_BIG,
 272         FCOE_ERROR_CODE_COMMON_DATA_WAS_NOT_TRANSMITTED,
 273         FCOE_ERROR_CODE_COMMON_TASK_DDF_RCTL_INFO_FIELD,
 274         FCOE_ERROR_CODE_COMMON_TASK_INVALID_RCTL,
 275         FCOE_ERROR_CODE_COMMON_TASK_RCTL_GENERAL_MISMATCH,
 276         FCOE_ERROR_CODE_E_D_TOV_TIMER_EXPIRATION /* Timer error codes */,
 277         FCOE_WARNING_CODE_REC_TOV_TIMER_EXPIRATION /* Timer error codes */,
 278         FCOE_ERROR_CODE_RR_TOV_TIMER_EXPIRATION /* Timer error codes */,
 279         /* ABTSrsp pckt arrived unexpected */
 280         FCOE_ERROR_CODE_ABTS_REPLY_UNEXPECTED,
 281         FCOE_ERROR_CODE_TARGET_MODE_FCP_RSP,
 282         FCOE_ERROR_CODE_TARGET_MODE_FCP_XFER,
 283         FCOE_ERROR_CODE_TARGET_MODE_DATA_TASK_TYPE_NOT_WRITE,
 284         FCOE_ERROR_CODE_DATA_FCTL_TARGET,
 285         FCOE_ERROR_CODE_TARGET_DATA_SIZE_NO_MATCH_XFER,
 286         FCOE_ERROR_CODE_TARGET_DIF_CRC_CHECKSUM_ERROR,
 287         FCOE_ERROR_CODE_TARGET_DIF_REF_TAG_ERROR,
 288         FCOE_ERROR_CODE_TARGET_DIF_APP_TAG_ERROR,
 289         MAX_FCOE_FP_ERROR_WARNING_CODE
 290 };
 291
 292
 293 /*
 294  * FCoE RESPQ element
 295  */
 296 struct fcoe_respqe {
 297         __le16 ox_id /* OX_ID that is located in the FCP_RSP FC header */;
 298         __le16 rx_id /* RX_ID that is located in the FCP_RSP FC header */;
 299         __le32 additional_info;
 300 /* PARAM that is located in the FCP_RSP FC header */
 301 #define FCOE_RESPQE_PARAM_MASK            0xFFFFFF
 302 #define FCOE_RESPQE_PARAM_SHIFT           0
 303 /* Indication whther its Target-auto-rsp mode or not */
 304 #define FCOE_RESPQE_TARGET_AUTO_RSP_MASK  0xFF
 305 #define FCOE_RESPQE_TARGET_AUTO_RSP_SHIFT 24
 306 };
 307
 308
 309 /*
 310  * FCoE slow path error codes
 311  */
 312 enum fcoe_sp_error_code {
 313         /* Error codes for Error Reporting in slow path flows */
 314         FCOE_ERROR_CODE_SLOW_PATH_TOO_MANY_FUNCS,
 315         FCOE_ERROR_SLOW_PATH_CODE_NO_LICENSE,
 316         MAX_FCOE_SP_ERROR_CODE
 317 };
 318
 319 /*
 320  * FCoE task TX state
 321  */
 322 enum fcoe_task_tx_state {
 323         /* Initiate state after driver has initialized the task */
 324         FCOE_TASK_TX_STATE_NORMAL,
 325         /* Updated by TX path after complete transmitting unsolicited packet */
 326         FCOE_TASK_TX_STATE_UNSOLICITED_COMPLETED,
 327         /*
 328          * Updated by TX path after start processing the task requesting the
 329          * cleanup/abort operation
 330          */
 331         FCOE_TASK_TX_STATE_CLEAN_REQ,
 332         FCOE_TASK_TX_STATE_ABTS /* Updated by TX path during abort procedure */,
 333         /* Updated by TX path during exchange cleanup procedure */
 334         FCOE_TASK_TX_STATE_EXCLEANUP,
 335         /*
 336          * Updated by TX path during exchange cleanup continuation task
 337          * procedure
 338          */
 339         FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE_CONT,
 340         /* Updated by TX path during exchange cleanup first xfer procedure */
 341         FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE,
 342         /* Updated by TX path during exchange cleanup read task in Target */
 343         FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_READ_OR_RSP,
 344         /* Updated by TX path during target exchange cleanup procedure */
 345         FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE_LAST_CYCLE,
 346         /* Updated by TX path during sequence recovery procedure */
 347         FCOE_TASK_TX_STATE_SEQRECOVERY,
 348         MAX_FCOE_TASK_TX_STATE
 349 };
 350
 351 #endif /* __QEDF_HSI__ */