drivers/scsi/bnx2fc/bnx2fc_hwi.c

   1 /* bnx2fc_hwi.c: Broadcom NetXtreme II Linux FCoE offload driver.
   2  * This file contains the code that low level functions that interact
   3  * with 57712 FCoE firmware.
   4  *
   5  * Copyright (c) 2008 - 2010 Broadcom Corporation
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation.
  10  *
  11  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
  12  */
  13
  14 #include "bnx2fc.h"
  15
  16 DECLARE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  17
  18 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
  19                                         struct fcoe_kcqe *new_cqe_kcqe);
  20 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
  21                                         struct fcoe_kcqe *ofld_kcqe);
  22 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
  23                                                 struct fcoe_kcqe *ofld_kcqe);
  24 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code);
  25 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
  26                                         struct fcoe_kcqe *conn_destroy);
  27
  28 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba)
  29 {
  30         struct fcoe_kwqe_stat stat_req;
  31         struct kwqe *kwqe_arr[2];
  32         int num_kwqes = 1;
  33         int rc = 0;
  34
  35         memset(&stat_req, 0x00, sizeof(struct fcoe_kwqe_stat));
  36         stat_req.hdr.op_code = FCOE_KWQE_OPCODE_STAT;
  37         stat_req.hdr.flags =
  38                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  39
  40         stat_req.stat_params_addr_lo = (u32) hba->stats_buf_dma;
  41         stat_req.stat_params_addr_hi = (u32) ((u64)hba->stats_buf_dma >> 32);
  42
  43         kwqe_arr[0] = (struct kwqe *) &stat_req;
  44
  45         if (hba->cnic && hba->cnic->submit_kwqes)
  46                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  47
  48         return rc;
  49 }
  50
  51 /**
  52  * bnx2fc_send_fw_fcoe_init_msg - initiates initial handshake with FCoE f/w
  53  *
  54  * @hba:        adapter structure pointer
  55  *
  56  * Send down FCoE firmware init KWQEs which initiates the initial handshake
  57  *      with the f/w.
  58  *
  59  */
  60 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba)
  61 {
  62         struct fcoe_kwqe_init1 fcoe_init1;
  63         struct fcoe_kwqe_init2 fcoe_init2;
  64         struct fcoe_kwqe_init3 fcoe_init3;
  65         struct kwqe *kwqe_arr[3];
  66         int num_kwqes = 3;
  67         int rc = 0;
  68
  69         if (!hba->cnic) {
  70                 printk(KERN_ALERT PFX "hba->cnic NULL during fcoe fw init\n");
  71                 return -ENODEV;
  72         }
  73
  74         /* fill init1 KWQE */
  75         memset(&fcoe_init1, 0x00, sizeof(struct fcoe_kwqe_init1));
  76         fcoe_init1.hdr.op_code = FCOE_KWQE_OPCODE_INIT1;
  77         fcoe_init1.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
  78                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  79
  80         fcoe_init1.num_tasks = BNX2FC_MAX_TASKS;
  81         fcoe_init1.sq_num_wqes = BNX2FC_SQ_WQES_MAX;
  82         fcoe_init1.rq_num_wqes = BNX2FC_RQ_WQES_MAX;
  83         fcoe_init1.rq_buffer_log_size = BNX2FC_RQ_BUF_LOG_SZ;
  84         fcoe_init1.cq_num_wqes = BNX2FC_CQ_WQES_MAX;
  85         fcoe_init1.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
  86         fcoe_init1.dummy_buffer_addr_hi = (u32) ((u64)hba->dummy_buf_dma >> 32);
  87         fcoe_init1.task_list_pbl_addr_lo = (u32) hba->task_ctx_bd_dma;
  88         fcoe_init1.task_list_pbl_addr_hi =
  89                                 (u32) ((u64) hba->task_ctx_bd_dma >> 32);
  90         fcoe_init1.mtu = hba->netdev->mtu;
  91
  92         fcoe_init1.flags = (PAGE_SHIFT <<
  93                                 FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT);
  94
  95         fcoe_init1.num_sessions_log = BNX2FC_NUM_MAX_SESS_LOG;
  96
  97         /* fill init2 KWQE */
  98         memset(&fcoe_init2, 0x00, sizeof(struct fcoe_kwqe_init2));
  99         fcoe_init2.hdr.op_code = FCOE_KWQE_OPCODE_INIT2;
 100         fcoe_init2.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 101                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 102
 103         fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
 104         fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
 105                                            ((u64) hba->hash_tbl_pbl_dma >> 32);
 106
 107         fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
 108         fcoe_init2.t2_hash_tbl_addr_hi = (u32)
 109                                           ((u64) hba->t2_hash_tbl_dma >> 32);
 110
 111         fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
 112         fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
 113                                         ((u64) hba->t2_hash_tbl_ptr_dma >> 32);
 114
 115         fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
 116
 117         /* fill init3 KWQE */
 118         memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
 119         fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
 120         fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 121                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 122         fcoe_init3.error_bit_map_lo = 0xffffffff;
 123         fcoe_init3.error_bit_map_hi = 0xffffffff;
 124
 125
 126         kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
 127         kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
 128         kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
 129
 130         if (hba->cnic && hba->cnic->submit_kwqes)
 131                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 132
 133         return rc;
 134 }
 135 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
 136 {
 137         struct fcoe_kwqe_destroy fcoe_destroy;
 138         struct kwqe *kwqe_arr[2];
 139         int num_kwqes = 1;
 140         int rc = -1;
 141
 142         /* fill destroy KWQE */
 143         memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
 144         fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
 145         fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 146                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 147         kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
 148
 149         if (hba->cnic && hba->cnic->submit_kwqes)
 150                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 151         return rc;
 152 }
 153
 154 /**
 155  * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
 156  *
 157  * @port:               port structure pointer
 158  * @tgt:                bnx2fc_rport structure pointer
 159  */
 160 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
 161                                         struct bnx2fc_rport *tgt)
 162 {
 163         struct fc_lport *lport = port->lport;
 164         struct bnx2fc_hba *hba = port->priv;
 165         struct kwqe *kwqe_arr[4];
 166         struct fcoe_kwqe_conn_offload1 ofld_req1;
 167         struct fcoe_kwqe_conn_offload2 ofld_req2;
 168         struct fcoe_kwqe_conn_offload3 ofld_req3;
 169         struct fcoe_kwqe_conn_offload4 ofld_req4;
 170         struct fc_rport_priv *rdata = tgt->rdata;
 171         struct fc_rport *rport = tgt->rport;
 172         int num_kwqes = 4;
 173         u32 port_id;
 174         int rc = 0;
 175         u16 conn_id;
 176
 177         /* Initialize offload request 1 structure */
 178         memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
 179
 180         ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
 181         ofld_req1.hdr.flags =
 182                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 183
 184
 185         conn_id = (u16)tgt->fcoe_conn_id;
 186         ofld_req1.fcoe_conn_id = conn_id;
 187
 188
 189         ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
 190         ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
 191
 192         ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
 193         ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
 194
 195         ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
 196         ofld_req1.rq_first_pbe_addr_hi =
 197                                 (u32)((u64) tgt->rq_dma >> 32);
 198
 199         ofld_req1.rq_prod = 0x8000;
 200
 201         /* Initialize offload request 2 structure */
 202         memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
 203
 204         ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
 205         ofld_req2.hdr.flags =
 206                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 207
 208         ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
 209
 210         ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
 211         ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
 212
 213         ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
 214         ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
 215
 216         ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
 217         ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
 218
 219         /* Initialize offload request 3 structure */
 220         memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
 221
 222         ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
 223         ofld_req3.hdr.flags =
 224                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 225
 226         ofld_req3.vlan_tag = hba->vlan_id <<
 227                                 FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
 228         ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
 229
 230         port_id = fc_host_port_id(lport->host);
 231         if (port_id == 0) {
 232                 BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?\n");
 233                 return -EINVAL;
 234         }
 235
 236         /*
 237          * Store s_id of the initiator for further reference. This will
 238          * be used during disable/destroy during linkdown processing as
 239          * when the lport is reset, the port_id also is reset to 0
 240          */
 241         tgt->sid = port_id;
 242         ofld_req3.s_id[0] = (port_id & 0x000000FF);
 243         ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
 244         ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
 245
 246         port_id = rport->port_id;
 247         ofld_req3.d_id[0] = (port_id & 0x000000FF);
 248         ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
 249         ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
 250
 251         ofld_req3.tx_total_conc_seqs = rdata->max_seq;
 252
 253         ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
 254         ofld_req3.rx_max_fc_pay_len  = lport->mfs;
 255
 256         ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
 257         ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
 258         ofld_req3.rx_open_seqs_exch_c3 = 1;
 259
 260         ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
 261         ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
 262
 263         /* set mul_n_port_ids supported flag to 0, until it is supported */
 264         ofld_req3.flags = 0;
 265         /*
 266         ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
 267                             FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
 268         */
 269         /* Info from PLOGI response */
 270         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
 271                              FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
 272
 273         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
 274                              FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
 275
 276         /* vlan flag */
 277         ofld_req3.flags |= (hba->vlan_enabled <<
 278                             FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
 279
 280         /* C2_VALID and ACK flags are not set as they are not suppported */
 281
 282
 283         /* Initialize offload request 4 structure */
 284         memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
 285         ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
 286         ofld_req4.hdr.flags =
 287                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 288
 289         ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
 290
 291
 292         ofld_req4.src_mac_addr_lo32[0] =  port->data_src_addr[5];
 293                                                         /* local mac */
 294         ofld_req4.src_mac_addr_lo32[1] =  port->data_src_addr[4];
 295         ofld_req4.src_mac_addr_lo32[2] =  port->data_src_addr[3];
 296         ofld_req4.src_mac_addr_lo32[3] =  port->data_src_addr[2];
 297         ofld_req4.src_mac_addr_hi16[0] =  port->data_src_addr[1];
 298         ofld_req4.src_mac_addr_hi16[1] =  port->data_src_addr[0];
 299         ofld_req4.dst_mac_addr_lo32[0] =  hba->ctlr.dest_addr[5];/* fcf mac */
 300         ofld_req4.dst_mac_addr_lo32[1] =  hba->ctlr.dest_addr[4];
 301         ofld_req4.dst_mac_addr_lo32[2] =  hba->ctlr.dest_addr[3];
 302         ofld_req4.dst_mac_addr_lo32[3] =  hba->ctlr.dest_addr[2];
 303         ofld_req4.dst_mac_addr_hi16[0] =  hba->ctlr.dest_addr[1];
 304         ofld_req4.dst_mac_addr_hi16[1] =  hba->ctlr.dest_addr[0];
 305
 306         ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
 307         ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
 308
 309         ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
 310         ofld_req4.confq_pbl_base_addr_hi =
 311                                         (u32)((u64) tgt->confq_pbl_dma >> 32);
 312
 313         kwqe_arr[0] = (struct kwqe *) &ofld_req1;
 314         kwqe_arr[1] = (struct kwqe *) &ofld_req2;
 315         kwqe_arr[2] = (struct kwqe *) &ofld_req3;
 316         kwqe_arr[3] = (struct kwqe *) &ofld_req4;
 317
 318         if (hba->cnic && hba->cnic->submit_kwqes)
 319                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 320
 321         return rc;
 322 }
 323
 324 /**
 325  * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
 326  *
 327  * @port:               port structure pointer
 328  * @tgt:                bnx2fc_rport structure pointer
 329  */
 330 static int bnx2fc_send_session_enable_req(struct fcoe_port *port,
 331                                         struct bnx2fc_rport *tgt)
 332 {
 333         struct kwqe *kwqe_arr[2];
 334         struct bnx2fc_hba *hba = port->priv;
 335         struct fcoe_kwqe_conn_enable_disable enbl_req;
 336         struct fc_lport *lport = port->lport;
 337         struct fc_rport *rport = tgt->rport;
 338         int num_kwqes = 1;
 339         int rc = 0;
 340         u32 port_id;
 341
 342         memset(&enbl_req, 0x00,
 343                sizeof(struct fcoe_kwqe_conn_enable_disable));
 344         enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
 345         enbl_req.hdr.flags =
 346                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 347
 348         enbl_req.src_mac_addr_lo32[0] =  port->data_src_addr[5];
 349                                                         /* local mac */
 350         enbl_req.src_mac_addr_lo32[1] =  port->data_src_addr[4];
 351         enbl_req.src_mac_addr_lo32[2] =  port->data_src_addr[3];
 352         enbl_req.src_mac_addr_lo32[3] =  port->data_src_addr[2];
 353         enbl_req.src_mac_addr_hi16[0] =  port->data_src_addr[1];
 354         enbl_req.src_mac_addr_hi16[1] =  port->data_src_addr[0];
 355
 356         enbl_req.dst_mac_addr_lo32[0] =  hba->ctlr.dest_addr[5];/* fcf mac */
 357         enbl_req.dst_mac_addr_lo32[1] =  hba->ctlr.dest_addr[4];
 358         enbl_req.dst_mac_addr_lo32[2] =  hba->ctlr.dest_addr[3];
 359         enbl_req.dst_mac_addr_lo32[3] =  hba->ctlr.dest_addr[2];
 360         enbl_req.dst_mac_addr_hi16[0] =  hba->ctlr.dest_addr[1];
 361         enbl_req.dst_mac_addr_hi16[1] =  hba->ctlr.dest_addr[0];
 362
 363         port_id = fc_host_port_id(lport->host);
 364         if (port_id != tgt->sid) {
 365                 printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
 366                                 "sid = 0x%x\n", port_id, tgt->sid);
 367                 port_id = tgt->sid;
 368         }
 369         enbl_req.s_id[0] = (port_id & 0x000000FF);
 370         enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 371         enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 372
 373         port_id = rport->port_id;
 374         enbl_req.d_id[0] = (port_id & 0x000000FF);
 375         enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 376         enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 377         enbl_req.vlan_tag = hba->vlan_id <<
 378                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 379         enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 380         enbl_req.vlan_flag = hba->vlan_enabled;
 381         enbl_req.context_id = tgt->context_id;
 382         enbl_req.conn_id = tgt->fcoe_conn_id;
 383
 384         kwqe_arr[0] = (struct kwqe *) &enbl_req;
 385
 386         if (hba->cnic && hba->cnic->submit_kwqes)
 387                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 388         return rc;
 389 }
 390
 391 /**
 392  * bnx2fc_send_session_disable_req - initiates FCoE Session disable
 393  *
 394  * @port:               port structure pointer
 395  * @tgt:                bnx2fc_rport structure pointer
 396  */
 397 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
 398                                     struct bnx2fc_rport *tgt)
 399 {
 400         struct bnx2fc_hba *hba = port->priv;
 401         struct fcoe_kwqe_conn_enable_disable disable_req;
 402         struct kwqe *kwqe_arr[2];
 403         struct fc_rport *rport = tgt->rport;
 404         int num_kwqes = 1;
 405         int rc = 0;
 406         u32 port_id;
 407
 408         memset(&disable_req, 0x00,
 409                sizeof(struct fcoe_kwqe_conn_enable_disable));
 410         disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
 411         disable_req.hdr.flags =
 412                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 413
 414         disable_req.src_mac_addr_lo32[0] =  port->data_src_addr[5];
 415         disable_req.src_mac_addr_lo32[2] =  port->data_src_addr[3];
 416         disable_req.src_mac_addr_lo32[3] =  port->data_src_addr[2];
 417         disable_req.src_mac_addr_hi16[0] =  port->data_src_addr[1];
 418         disable_req.src_mac_addr_hi16[1] =  port->data_src_addr[0];
 419
 420         disable_req.dst_mac_addr_lo32[0] =  hba->ctlr.dest_addr[5];/* fcf mac */
 421         disable_req.dst_mac_addr_lo32[1] =  hba->ctlr.dest_addr[4];
 422         disable_req.dst_mac_addr_lo32[2] =  hba->ctlr.dest_addr[3];
 423         disable_req.dst_mac_addr_lo32[3] =  hba->ctlr.dest_addr[2];
 424         disable_req.dst_mac_addr_hi16[0] =  hba->ctlr.dest_addr[1];
 425         disable_req.dst_mac_addr_hi16[1] =  hba->ctlr.dest_addr[0];
 426
 427         port_id = tgt->sid;
 428         disable_req.s_id[0] = (port_id & 0x000000FF);
 429         disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 430         disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 431
 432
 433         port_id = rport->port_id;
 434         disable_req.d_id[0] = (port_id & 0x000000FF);
 435         disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 436         disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 437         disable_req.context_id = tgt->context_id;
 438         disable_req.conn_id = tgt->fcoe_conn_id;
 439         disable_req.vlan_tag = hba->vlan_id <<
 440                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 441         disable_req.vlan_tag |=
 442                         3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 443         disable_req.vlan_flag = hba->vlan_enabled;
 444
 445         kwqe_arr[0] = (struct kwqe *) &disable_req;
 446
 447         if (hba->cnic && hba->cnic->submit_kwqes)
 448                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 449
 450         return rc;
 451 }
 452
 453 /**
 454  * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
 455  *
 456  * @port:               port structure pointer
 457  * @tgt:                bnx2fc_rport structure pointer
 458  */
 459 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
 460                                         struct bnx2fc_rport *tgt)
 461 {
 462         struct fcoe_kwqe_conn_destroy destroy_req;
 463         struct kwqe *kwqe_arr[2];
 464         int num_kwqes = 1;
 465         int rc = 0;
 466
 467         memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
 468         destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
 469         destroy_req.hdr.flags =
 470                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 471
 472         destroy_req.context_id = tgt->context_id;
 473         destroy_req.conn_id = tgt->fcoe_conn_id;
 474
 475         kwqe_arr[0] = (struct kwqe *) &destroy_req;
 476
 477         if (hba->cnic && hba->cnic->submit_kwqes)
 478                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 479
 480         return rc;
 481 }
 482
 483 static void bnx2fc_unsol_els_work(struct work_struct *work)
 484 {
 485         struct bnx2fc_unsol_els *unsol_els;
 486         struct fc_lport *lport;
 487         struct fc_frame *fp;
 488
 489         unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
 490         lport = unsol_els->lport;
 491         fp = unsol_els->fp;
 492         fc_exch_recv(lport, fp);
 493         kfree(unsol_els);
 494 }
 495
 496 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
 497                                    unsigned char *buf,
 498                                    u32 frame_len, u16 l2_oxid)
 499 {
 500         struct fcoe_port *port = tgt->port;
 501         struct fc_lport *lport = port->lport;
 502         struct bnx2fc_unsol_els *unsol_els;
 503         struct fc_frame_header *fh;
 504         struct fc_frame *fp;
 505         struct sk_buff *skb;
 506         u32 payload_len;
 507         u32 crc;
 508         u8 op;
 509
 510
 511         unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
 512         if (!unsol_els) {
 513                 BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work\n");
 514                 return;
 515         }
 516
 517         BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d\n",
 518                 l2_oxid, frame_len);
 519
 520         payload_len = frame_len - sizeof(struct fc_frame_header);
 521
 522         fp = fc_frame_alloc(lport, payload_len);
 523         if (!fp) {
 524                 printk(KERN_ERR PFX "fc_frame_alloc failure\n");
 525                 return;
 526         }
 527
 528         fh = (struct fc_frame_header *) fc_frame_header_get(fp);
 529         /* Copy FC Frame header and payload into the frame */
 530         memcpy(fh, buf, frame_len);
 531
 532         if (l2_oxid != FC_XID_UNKNOWN)
 533                 fh->fh_ox_id = htons(l2_oxid);
 534
 535         skb = fp_skb(fp);
 536
 537         if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
 538             (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
 539
 540                 if (fh->fh_type == FC_TYPE_ELS) {
 541                         op = fc_frame_payload_op(fp);
 542                         if ((op == ELS_TEST) || (op == ELS_ESTC) ||
 543                             (op == ELS_FAN) || (op == ELS_CSU)) {
 544                                 /*
 545                                  * No need to reply for these
 546                                  * ELS requests
 547                                  */
 548                                 printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
 549                                 kfree_skb(skb);
 550                                 return;
 551                         }
 552                 }
 553                 crc = fcoe_fc_crc(fp);
 554                 fc_frame_init(fp);
 555                 fr_dev(fp) = lport;
 556                 fr_sof(fp) = FC_SOF_I3;
 557                 fr_eof(fp) = FC_EOF_T;
 558                 fr_crc(fp) = cpu_to_le32(~crc);
 559                 unsol_els->lport = lport;
 560                 unsol_els->fp = fp;
 561                 INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
 562                 queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
 563         } else {
 564                 BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
 565                 kfree_skb(skb);
 566         }
 567 }
 568
 569 static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
 570 {
 571         u8 num_rq;
 572         struct fcoe_err_report_entry *err_entry;
 573         unsigned char *rq_data;
 574         unsigned char *buf = NULL, *buf1;
 575         int i;
 576         u16 xid;
 577         u32 frame_len, len;
 578         struct bnx2fc_cmd *io_req = NULL;
 579         struct fcoe_task_ctx_entry *task, *task_page;
 580         struct bnx2fc_hba *hba = tgt->port->priv;
 581         int task_idx, index;
 582         int rc = 0;
 583
 584
 585         BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
 586         switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
 587         case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
 588                 frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
 589                              FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
 590
 591                 num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
 592
 593                 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
 594                 if (rq_data) {
 595                         buf = rq_data;
 596                 } else {
 597                         buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
 598                                               GFP_ATOMIC);
 599
 600                         if (!buf1) {
 601                                 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
 602                                 break;
 603                         }
 604
 605                         for (i = 0; i < num_rq; i++) {
 606                                 rq_data = (unsigned char *)
 607                                            bnx2fc_get_next_rqe(tgt, 1);
 608                                 len = BNX2FC_RQ_BUF_SZ;
 609                                 memcpy(buf1, rq_data, len);
 610                                 buf1 += len;
 611                         }
 612                 }
 613                 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
 614                                               FC_XID_UNKNOWN);
 615
 616                 if (buf != rq_data)
 617                         kfree(buf);
 618                 bnx2fc_return_rqe(tgt, num_rq);
 619                 break;
 620
 621         case FCOE_ERROR_DETECTION_CQE_TYPE:
 622                 /*
 623                  *In case of error reporting CQE a single RQ entry
 624                  * is consumes.
 625                  */
 626                 spin_lock_bh(&tgt->tgt_lock);
 627                 num_rq = 1;
 628                 err_entry = (struct fcoe_err_report_entry *)
 629                              bnx2fc_get_next_rqe(tgt, 1);
 630                 xid = err_entry->fc_hdr.ox_id;
 631                 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
 632                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
 633                         err_entry->err_warn_bitmap_hi,
 634                         err_entry->err_warn_bitmap_lo);
 635                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
 636                         err_entry->tx_buf_off, err_entry->rx_buf_off);
 637
 638                 bnx2fc_return_rqe(tgt, 1);
 639
 640                 if (xid > BNX2FC_MAX_XID) {
 641                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
 642                                    xid);
 643                         spin_unlock_bh(&tgt->tgt_lock);
 644                         break;
 645                 }
 646
 647                 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 648                 index = xid % BNX2FC_TASKS_PER_PAGE;
 649                 task_page = (struct fcoe_task_ctx_entry *)
 650                                                 hba->task_ctx[task_idx];
 651                 task = &(task_page[index]);
 652
 653                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 654                 if (!io_req) {
 655                         spin_unlock_bh(&tgt->tgt_lock);
 656                         break;
 657                 }
 658
 659                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 660                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 661                         spin_unlock_bh(&tgt->tgt_lock);
 662                         break;
 663                 }
 664
 665                 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
 666                                        &io_req->req_flags)) {
 667                         BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
 668                                             "progress.. ignore unsol err\n");
 669                         spin_unlock_bh(&tgt->tgt_lock);
 670                         break;
 671                 }
 672
 673                 /*
 674                  * If ABTS is already in progress, and FW error is
 675                  * received after that, do not cancel the timeout_work
 676                  * and let the error recovery continue by explicitly
 677                  * logging out the target, when the ABTS eventually
 678                  * times out.
 679                  */
 680                 if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
 681                                       &io_req->req_flags)) {
 682                         /*
 683                          * Cancel the timeout_work, as we received IO
 684                          * completion with FW error.
 685                          */
 686                         if (cancel_delayed_work(&io_req->timeout_work))
 687                                 kref_put(&io_req->refcount,
 688                                          bnx2fc_cmd_release); /* timer hold */
 689
 690                         rc = bnx2fc_initiate_abts(io_req);
 691                         if (rc != SUCCESS) {
 692                                 BNX2FC_IO_DBG(io_req, "err_warn: initiate_abts "
 693                                         "failed. issue cleanup\n");
 694                                 rc = bnx2fc_initiate_cleanup(io_req);
 695                                 BUG_ON(rc);
 696                         }
 697                 } else
 698                         printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
 699                                             "in ABTS processing\n", xid);
 700                 spin_unlock_bh(&tgt->tgt_lock);
 701                 break;
 702
 703         case FCOE_WARNING_DETECTION_CQE_TYPE:
 704                 /*
 705                  *In case of warning reporting CQE a single RQ entry
 706                  * is consumes.
 707                  */
 708                 num_rq = 1;
 709                 err_entry = (struct fcoe_err_report_entry *)
 710                              bnx2fc_get_next_rqe(tgt, 1);
 711                 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
 712                 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
 713                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
 714                         err_entry->err_warn_bitmap_hi,
 715                         err_entry->err_warn_bitmap_lo);
 716                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
 717                         err_entry->tx_buf_off, err_entry->rx_buf_off);
 718
 719                 bnx2fc_return_rqe(tgt, 1);
 720                 break;
 721
 722         default:
 723                 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
 724                 break;
 725         }
 726 }
 727
 728 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
 729 {
 730         struct fcoe_task_ctx_entry *task;
 731         struct fcoe_task_ctx_entry *task_page;
 732         struct fcoe_port *port = tgt->port;
 733         struct bnx2fc_hba *hba = port->priv;
 734         struct bnx2fc_cmd *io_req;
 735         int task_idx, index;
 736         u16 xid;
 737         u8  cmd_type;
 738         u8 rx_state = 0;
 739         u8 num_rq;
 740
 741         spin_lock_bh(&tgt->tgt_lock);
 742         xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
 743         if (xid >= BNX2FC_MAX_TASKS) {
 744                 printk(KERN_ALERT PFX "ERROR:xid out of range\n");
 745                 spin_unlock_bh(&tgt->tgt_lock);
 746                 return;
 747         }
 748         task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 749         index = xid % BNX2FC_TASKS_PER_PAGE;
 750         task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
 751         task = &(task_page[index]);
 752
 753         num_rq = ((task->rx_wr_tx_rd.rx_flags &
 754                    FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE) >>
 755                    FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE_SHIFT);
 756
 757         io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 758
 759         if (io_req == NULL) {
 760                 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
 761                 spin_unlock_bh(&tgt->tgt_lock);
 762                 return;
 763         }
 764
 765         /* Timestamp IO completion time */
 766         cmd_type = io_req->cmd_type;
 767
 768         /* optimized completion path */
 769         if (cmd_type == BNX2FC_SCSI_CMD) {
 770                 rx_state = ((task->rx_wr_tx_rd.rx_flags &
 771                             FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE) >>
 772                             FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE_SHIFT);
 773
 774                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
 775                         bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
 776                         spin_unlock_bh(&tgt->tgt_lock);
 777                         return;
 778                 }
 779         }
 780
 781         /* Process other IO completion types */
 782         switch (cmd_type) {
 783         case BNX2FC_SCSI_CMD:
 784                 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 785                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 786                 else if (rx_state ==
 787                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 788                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 789                 else
 790                         printk(KERN_ERR PFX "Invalid rx state - %d\n",
 791                                 rx_state);
 792                 break;
 793
 794         case BNX2FC_TASK_MGMT_CMD:
 795                 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
 796                 bnx2fc_process_tm_compl(io_req, task, num_rq);
 797                 break;
 798
 799         case BNX2FC_ABTS:
 800                 /*
 801                  * ABTS request received by firmware. ABTS response
 802                  * will be delivered to the task belonging to the IO
 803                  * that was aborted
 804                  */
 805                 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
 806                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 807                 break;
 808
 809         case BNX2FC_ELS:
 810                 BNX2FC_IO_DBG(io_req, "cq_compl - call process_els_compl\n");
 811                 bnx2fc_process_els_compl(io_req, task, num_rq);
 812                 break;
 813
 814         case BNX2FC_CLEANUP:
 815                 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
 816                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 817                 break;
 818
 819         default:
 820                 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
 821                 break;
 822         }
 823         spin_unlock_bh(&tgt->tgt_lock);
 824 }
 825
 826 struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
 827 {
 828         struct bnx2fc_work *work;
 829         work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
 830         if (!work)
 831                 return NULL;
 832
 833         INIT_LIST_HEAD(&work->list);
 834         work->tgt = tgt;
 835         work->wqe = wqe;
 836         return work;
 837 }
 838
 839 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
 840 {
 841         struct fcoe_cqe *cq;
 842         u32 cq_cons;
 843         struct fcoe_cqe *cqe;
 844         u16 wqe;
 845         bool more_cqes_found = false;
 846
 847         /*
 848          * cq_lock is a low contention lock used to protect
 849          * the CQ data structure from being freed up during
 850          * the upload operation
 851          */
 852         spin_lock_bh(&tgt->cq_lock);
 853
 854         if (!tgt->cq) {
 855                 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
 856                 spin_unlock_bh(&tgt->cq_lock);
 857                 return 0;
 858         }
 859         cq = tgt->cq;
 860         cq_cons = tgt->cq_cons_idx;
 861         cqe = &cq[cq_cons];
 862
 863         do {
 864                 more_cqes_found ^= true;
 865
 866                 while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
 867                        (tgt->cq_curr_toggle_bit <<
 868                        FCOE_CQE_TOGGLE_BIT_SHIFT)) {
 869
 870                         /* new entry on the cq */
 871                         if (wqe & FCOE_CQE_CQE_TYPE) {
 872                                 /* Unsolicited event notification */
 873                                 bnx2fc_process_unsol_compl(tgt, wqe);
 874                         } else {
 875                                 struct bnx2fc_work *work = NULL;
 876                                 struct bnx2fc_percpu_s *fps = NULL;
 877                                 unsigned int cpu = wqe % num_possible_cpus();
 878
 879                                 fps = &per_cpu(bnx2fc_percpu, cpu);
 880                                 spin_lock_bh(&fps->fp_work_lock);
 881                                 if (unlikely(!fps->iothread))
 882                                         goto unlock;
 883
 884                                 work = bnx2fc_alloc_work(tgt, wqe);
 885                                 if (work)
 886                                         list_add_tail(&work->list,
 887                                                         &fps->work_list);
 888 unlock:
 889                                 spin_unlock_bh(&fps->fp_work_lock);
 890
 891                                 /* Pending work request completion */
 892                                 if (fps->iothread && work)
 893                                         wake_up_process(fps->iothread);
 894                                 else
 895                                         bnx2fc_process_cq_compl(tgt, wqe);
 896                         }
 897                         cqe++;
 898                         tgt->cq_cons_idx++;
 899
 900                         if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
 901                                 tgt->cq_cons_idx = 0;
 902                                 cqe = cq;
 903                                 tgt->cq_curr_toggle_bit =
 904                                         1 - tgt->cq_curr_toggle_bit;
 905                         }
 906                 }
 907                 /* Re-arm CQ */
 908                 if (more_cqes_found) {
 909                         tgt->conn_db->cq_arm.lo = -1;
 910                         wmb();
 911                 }
 912         } while (more_cqes_found);
 913
 914         /*
 915          * Commit tgt->cq_cons_idx change to the memory
 916          * spin_lock implies full memory barrier, no need to smp_wmb
 917          */
 918
 919         spin_unlock_bh(&tgt->cq_lock);
 920         return 0;
 921 }
 922
 923 /**
 924  * bnx2fc_fastpath_notification - process global event queue (KCQ)
 925  *
 926  * @hba:                adapter structure pointer
 927  * @new_cqe_kcqe:       pointer to newly DMA'd KCQ entry
 928  *
 929  * Fast path event notification handler
 930  */
 931 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
 932                                         struct fcoe_kcqe *new_cqe_kcqe)
 933 {
 934         u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
 935         struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
 936
 937         if (!tgt) {
 938                 printk(KERN_ALERT PFX "conn_id 0x%x not valid\n", conn_id);
 939                 return;
 940         }
 941
 942         bnx2fc_process_new_cqes(tgt);
 943 }
 944
 945 /**
 946  * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
 947  *
 948  * @hba:        adapter structure pointer
 949  * @ofld_kcqe:  connection offload kcqe pointer
 950  *
 951  * handle session offload completion, enable the session if offload is
 952  * successful.
 953  */
 954 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
 955                                         struct fcoe_kcqe *ofld_kcqe)
 956 {
 957         struct bnx2fc_rport             *tgt;
 958         struct fcoe_port                *port;
 959         u32                             conn_id;
 960         u32                             context_id;
 961         int                             rc;
 962
 963         conn_id = ofld_kcqe->fcoe_conn_id;
 964         context_id = ofld_kcqe->fcoe_conn_context_id;
 965         tgt = hba->tgt_ofld_list[conn_id];
 966         if (!tgt) {
 967                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
 968                 return;
 969         }
 970         BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
 971                 ofld_kcqe->fcoe_conn_context_id);
 972         port = tgt->port;
 973         if (hba != tgt->port->priv) {
 974                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: HBA mis-match\n");
 975                 goto ofld_cmpl_err;
 976         }
 977         /*
 978          * cnic has allocated a context_id for this session; use this
 979          * while enabling the session.
 980          */
 981         tgt->context_id = context_id;
 982         if (ofld_kcqe->completion_status) {
 983                 if (ofld_kcqe->completion_status ==
 984                                 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
 985                         printk(KERN_ERR PFX "unable to allocate FCoE context "
 986                                 "resources\n");
 987                         set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
 988                 }
 989                 goto ofld_cmpl_err;
 990         } else {
 991
 992                 /* now enable the session */
 993                 rc = bnx2fc_send_session_enable_req(port, tgt);
 994                 if (rc) {
 995                         printk(KERN_ALERT PFX "enable session failed\n");
 996                         goto ofld_cmpl_err;
 997                 }
 998         }
 999         return;
1000 ofld_cmpl_err:
1001         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1002         wake_up_interruptible(&tgt->ofld_wait);
1003 }
1004
1005 /**
1006  * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1007  *
1008  * @hba:        adapter structure pointer
1009  * @ofld_kcqe:  connection offload kcqe pointer
1010  *
1011  * handle session enable completion, mark the rport as ready
1012  */
1013
1014 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1015                                                 struct fcoe_kcqe *ofld_kcqe)
1016 {
1017         struct bnx2fc_rport             *tgt;
1018         u32                             conn_id;
1019         u32                             context_id;
1020
1021         context_id = ofld_kcqe->fcoe_conn_context_id;
1022         conn_id = ofld_kcqe->fcoe_conn_id;
1023         tgt = hba->tgt_ofld_list[conn_id];
1024         if (!tgt) {
1025                 printk(KERN_ALERT PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1026                 return;
1027         }
1028
1029         BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1030                 ofld_kcqe->fcoe_conn_context_id);
1031
1032         /*
1033          * context_id should be the same for this target during offload
1034          * and enable
1035          */
1036         if (tgt->context_id != context_id) {
1037                 printk(KERN_ALERT PFX "context id mis-match\n");
1038                 return;
1039         }
1040         if (hba != tgt->port->priv) {
1041                 printk(KERN_ALERT PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1042                 goto enbl_cmpl_err;
1043         }
1044         if (ofld_kcqe->completion_status) {
1045                 goto enbl_cmpl_err;
1046         } else {
1047                 /* enable successful - rport ready for issuing IOs */
1048                 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1049                 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1050                 wake_up_interruptible(&tgt->ofld_wait);
1051         }
1052         return;
1053
1054 enbl_cmpl_err:
1055         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1056         wake_up_interruptible(&tgt->ofld_wait);
1057 }
1058
1059 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1060                                         struct fcoe_kcqe *disable_kcqe)
1061 {
1062
1063         struct bnx2fc_rport             *tgt;
1064         u32                             conn_id;
1065
1066         conn_id = disable_kcqe->fcoe_conn_id;
1067         tgt = hba->tgt_ofld_list[conn_id];
1068         if (!tgt) {
1069                 printk(KERN_ALERT PFX "ERROR: disable_cmpl: No disable req\n");
1070                 return;
1071         }
1072
1073         BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1074
1075         if (disable_kcqe->completion_status) {
1076                 printk(KERN_ALERT PFX "ERROR: Disable failed with cmpl status %d\n",
1077                         disable_kcqe->completion_status);
1078                 return;
1079         } else {
1080                 /* disable successful */
1081                 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1082                 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1083                 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1084                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1085                 wake_up_interruptible(&tgt->upld_wait);
1086         }
1087 }
1088
1089 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1090                                         struct fcoe_kcqe *destroy_kcqe)
1091 {
1092         struct bnx2fc_rport             *tgt;
1093         u32                             conn_id;
1094
1095         conn_id = destroy_kcqe->fcoe_conn_id;
1096         tgt = hba->tgt_ofld_list[conn_id];
1097         if (!tgt) {
1098                 printk(KERN_ALERT PFX "destroy_cmpl: No destroy req\n");
1099                 return;
1100         }
1101
1102         BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1103
1104         if (destroy_kcqe->completion_status) {
1105                 printk(KERN_ALERT PFX "Destroy conn failed, cmpl status %d\n",
1106                         destroy_kcqe->completion_status);
1107                 return;
1108         } else {
1109                 /* destroy successful */
1110                 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1111                 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1112                 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1113                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1114                 wake_up_interruptible(&tgt->upld_wait);
1115         }
1116 }
1117
1118 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1119 {
1120         switch (err_code) {
1121         case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1122                 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1123                 break;
1124
1125         case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1126                 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1127                 break;
1128
1129         case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1130                 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1131                 break;
1132
1133         default:
1134                 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1135         }
1136 }
1137
1138 /**
1139  * bnx2fc_indicae_kcqe - process KCQE
1140  *
1141  * @hba:        adapter structure pointer
1142  * @kcqe:       kcqe pointer
1143  * @num_cqe:    Number of completion queue elements
1144  *
1145  * Generic KCQ event handler
1146  */
1147 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1148                                         u32 num_cqe)
1149 {
1150         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1151         int i = 0;
1152         struct fcoe_kcqe *kcqe = NULL;
1153
1154         while (i < num_cqe) {
1155                 kcqe = (struct fcoe_kcqe *) kcq[i++];
1156
1157                 switch (kcqe->op_code) {
1158                 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1159                         bnx2fc_fastpath_notification(hba, kcqe);
1160                         break;
1161
1162                 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1163                         bnx2fc_process_ofld_cmpl(hba, kcqe);
1164                         break;
1165
1166                 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1167                         bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1168                         break;
1169
1170                 case FCOE_KCQE_OPCODE_INIT_FUNC:
1171                         if (kcqe->completion_status !=
1172                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1173                                 bnx2fc_init_failure(hba,
1174                                                 kcqe->completion_status);
1175                         } else {
1176                                 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1177                                 bnx2fc_get_link_state(hba);
1178                                 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1179                                         (u8)hba->pcidev->bus->number);
1180                         }
1181                         break;
1182
1183                 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1184                         if (kcqe->completion_status !=
1185                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1186
1187                                 printk(KERN_ERR PFX "DESTROY failed\n");
1188                         } else {
1189                                 printk(KERN_ERR PFX "DESTROY success\n");
1190                         }
1191                         hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
1192                         wake_up_interruptible(&hba->destroy_wait);
1193                         break;
1194
1195                 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1196                         bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1197                         break;
1198
1199                 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1200                         bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1201                         break;
1202
1203                 case FCOE_KCQE_OPCODE_STAT_FUNC:
1204                         if (kcqe->completion_status !=
1205                             FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1206                                 printk(KERN_ERR PFX "STAT failed\n");
1207                         complete(&hba->stat_req_done);
1208                         break;
1209
1210                 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1211                         /* fall thru */
1212                 default:
1213                         printk(KERN_ALERT PFX "unknown opcode 0x%x\n",
1214                                                                 kcqe->op_code);
1215                 }
1216         }
1217 }
1218
1219 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1220 {
1221         struct fcoe_sqe *sqe;
1222
1223         sqe = &tgt->sq[tgt->sq_prod_idx];
1224
1225         /* Fill SQ WQE */
1226         sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1227         sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1228
1229         /* Advance SQ Prod Idx */
1230         if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1231                 tgt->sq_prod_idx = 0;
1232                 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1233         }
1234 }
1235
1236 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1237 {
1238         struct b577xx_doorbell_set_prod ev_doorbell;
1239         u32 msg;
1240
1241         wmb();
1242
1243         memset(&ev_doorbell, 0, sizeof(struct b577xx_doorbell_set_prod));
1244         ev_doorbell.header.header = B577XX_DOORBELL_HDR_DB_TYPE;
1245
1246         ev_doorbell.prod = tgt->sq_prod_idx |
1247                                 (tgt->sq_curr_toggle_bit << 15);
1248         ev_doorbell.header.header |= B577XX_FCOE_CONNECTION_TYPE <<
1249                                         B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT;
1250         msg = *((u32 *)&ev_doorbell);
1251         writel(cpu_to_le32(msg), tgt->ctx_base);
1252
1253         mmiowb();
1254
1255 }
1256
1257 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1258 {
1259         u32 context_id = tgt->context_id;
1260         struct fcoe_port *port = tgt->port;
1261         u32 reg_off;
1262         resource_size_t reg_base;
1263         struct bnx2fc_hba *hba = port->priv;
1264
1265         reg_base = pci_resource_start(hba->pcidev,
1266                                         BNX2X_DOORBELL_PCI_BAR);
1267         reg_off = BNX2FC_5771X_DB_PAGE_SIZE *
1268                         (context_id & 0x1FFFF) + DPM_TRIGER_TYPE;
1269         tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
1270         if (!tgt->ctx_base)
1271                 return -ENOMEM;
1272         return 0;
1273 }
1274
1275 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1276 {
1277         char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1278
1279         if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1280                 return NULL;
1281
1282         tgt->rq_cons_idx += num_items;
1283
1284         if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1285                 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1286
1287         return buf;
1288 }
1289
1290 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1291 {
1292         /* return the rq buffer */
1293         u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1294         if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1295                 /* Wrap around RQ */
1296                 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1297         }
1298         tgt->rq_prod_idx = next_prod_idx;
1299         tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1300 }
1301
1302 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1303                               struct fcoe_task_ctx_entry *task,
1304                               u16 orig_xid)
1305 {
1306         u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1307         struct bnx2fc_rport *tgt = io_req->tgt;
1308         u32 context_id = tgt->context_id;
1309
1310         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1311
1312         /* Tx Write Rx Read */
1313         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1314                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1315         task->tx_wr_rx_rd.init_flags = task_type <<
1316                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1317         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1318                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1319         /* Common */
1320         task->cmn.common_flags = context_id <<
1321                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1322         task->cmn.general.cleanup_info.task_id = orig_xid;
1323
1324
1325 }
1326
1327 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1328                                 struct fcoe_task_ctx_entry *task)
1329 {
1330         struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1331         struct bnx2fc_rport *tgt = io_req->tgt;
1332         struct fc_frame_header *fc_hdr;
1333         u8 task_type = 0;
1334         u64 *hdr;
1335         u64 temp_hdr[3];
1336         u32 context_id;
1337
1338
1339         /* Obtain task_type */
1340         if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1341             (io_req->cmd_type == BNX2FC_ELS)) {
1342                 task_type = FCOE_TASK_TYPE_MIDPATH;
1343         } else if (io_req->cmd_type == BNX2FC_ABTS) {
1344                 task_type = FCOE_TASK_TYPE_ABTS;
1345         }
1346
1347         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1348
1349         /* Setup the task from io_req for easy reference */
1350         io_req->task = task;
1351
1352         BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1353                 io_req->cmd_type, task_type);
1354
1355         /* Tx only */
1356         if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1357             (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1358                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1359                                 (u32)mp_req->mp_req_bd_dma;
1360                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1361                                 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1362                 task->tx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
1363                 BNX2FC_IO_DBG(io_req, "init_mp_task - bd_dma = 0x%llx\n",
1364                               (unsigned long long)mp_req->mp_req_bd_dma);
1365         }
1366
1367         /* Tx Write Rx Read */
1368         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1369                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1370         task->tx_wr_rx_rd.init_flags = task_type <<
1371                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1372         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
1373                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
1374         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1375                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1376
1377         /* Common */
1378         task->cmn.data_2_trns = io_req->data_xfer_len;
1379         context_id = tgt->context_id;
1380         task->cmn.common_flags = context_id <<
1381                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1382         task->cmn.common_flags |= 1 <<
1383                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
1384         task->cmn.common_flags |= 1 <<
1385                         FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
1386
1387         /* Rx Write Tx Read */
1388         fc_hdr = &(mp_req->req_fc_hdr);
1389         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1390                 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1391                 fc_hdr->fh_rx_id = htons(0xffff);
1392                 task->rx_wr_tx_rd.rx_id = 0xffff;
1393         } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1394                 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1395         }
1396
1397         /* Fill FC Header into middle path buffer */
1398         hdr = (u64 *) &task->cmn.general.cmd_info.mp_fc_frame.fc_hdr;
1399         memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1400         hdr[0] = cpu_to_be64(temp_hdr[0]);
1401         hdr[1] = cpu_to_be64(temp_hdr[1]);
1402         hdr[2] = cpu_to_be64(temp_hdr[2]);
1403
1404         /* Rx Only */
1405         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1406
1407                 task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1408                                 (u32)mp_req->mp_resp_bd_dma;
1409                 task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1410                                 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1411                 task->rx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
1412         }
1413 }
1414
1415 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1416                              struct fcoe_task_ctx_entry *task)
1417 {
1418         u8 task_type;
1419         struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1420         struct io_bdt *bd_tbl = io_req->bd_tbl;
1421         struct bnx2fc_rport *tgt = io_req->tgt;
1422         u64 *fcp_cmnd;
1423         u64 tmp_fcp_cmnd[4];
1424         u32 context_id;
1425         int cnt, i;
1426         int bd_count;
1427
1428         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1429
1430         /* Setup the task from io_req for easy reference */
1431         io_req->task = task;
1432
1433         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1434                 task_type = FCOE_TASK_TYPE_WRITE;
1435         else
1436                 task_type = FCOE_TASK_TYPE_READ;
1437
1438         /* Tx only */
1439         if (task_type == FCOE_TASK_TYPE_WRITE) {
1440                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1441                                 (u32)bd_tbl->bd_tbl_dma;
1442                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1443                                 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1444                 task->tx_wr_only.sgl_ctx.mul_sges.sgl_size =
1445                                 bd_tbl->bd_valid;
1446         }
1447
1448         /*Tx Write Rx Read */
1449         /* Init state to NORMAL */
1450         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1451                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1452         task->tx_wr_rx_rd.init_flags = task_type <<
1453                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1454         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
1455                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
1456         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1457                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1458
1459         /* Common */
1460         task->cmn.data_2_trns = io_req->data_xfer_len;
1461         context_id = tgt->context_id;
1462         task->cmn.common_flags = context_id <<
1463                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1464         task->cmn.common_flags |= 1 <<
1465                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
1466         task->cmn.common_flags |= 1 <<
1467                         FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
1468
1469         /* Set initiative ownership */
1470         task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_SEQ_INIT;
1471
1472         /* Set initial seq counter */
1473         task->cmn.tx_low_seq_cnt = 1;
1474
1475         /* Set state to "waiting for the first packet" */
1476         task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME;
1477
1478         /* Fill FCP_CMND IU */
1479         fcp_cmnd = (u64 *)
1480                     task->cmn.general.cmd_info.fcp_cmd_payload.opaque;
1481         bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1482
1483         /* swap fcp_cmnd */
1484         cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1485
1486         for (i = 0; i < cnt; i++) {
1487                 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1488                 fcp_cmnd++;
1489         }
1490
1491         /* Rx Write Tx Read */
1492         task->rx_wr_tx_rd.rx_id = 0xffff;
1493
1494         /* Rx Only */
1495         if (task_type == FCOE_TASK_TYPE_READ) {
1496
1497                 bd_count = bd_tbl->bd_valid;
1498                 if (bd_count == 1) {
1499
1500                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1501
1502                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.lo =
1503                                         fcoe_bd_tbl->buf_addr_lo;
1504                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.hi =
1505                                         fcoe_bd_tbl->buf_addr_hi;
1506                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_rem =
1507                                         fcoe_bd_tbl->buf_len;
1508                         task->tx_wr_rx_rd.init_flags |= 1 <<
1509                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE_SHIFT;
1510                 } else {
1511
1512                         task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1513                                         (u32)bd_tbl->bd_tbl_dma;
1514                         task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1515                                         (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1516                         task->rx_wr_only.sgl_ctx.mul_sges.sgl_size =
1517                                         bd_tbl->bd_valid;
1518                 }
1519         }
1520 }
1521
1522 /**
1523  * bnx2fc_setup_task_ctx - allocate and map task context
1524  *
1525  * @hba:        pointer to adapter structure
1526  *
1527  * allocate memory for task context, and associated BD table to be used
1528  * by firmware
1529  *
1530  */
1531 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1532 {
1533         int rc = 0;
1534         struct regpair *task_ctx_bdt;
1535         dma_addr_t addr;
1536         int i;
1537
1538         /*
1539          * Allocate task context bd table. A page size of bd table
1540          * can map 256 buffers. Each buffer contains 32 task context
1541          * entries. Hence the limit with one page is 8192 task context
1542          * entries.
1543          */
1544         hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1545                                                   PAGE_SIZE,
1546                                                   &hba->task_ctx_bd_dma,
1547                                                   GFP_KERNEL);
1548         if (!hba->task_ctx_bd_tbl) {
1549                 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1550                 rc = -1;
1551                 goto out;
1552         }
1553         memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
1554
1555         /*
1556          * Allocate task_ctx which is an array of pointers pointing to
1557          * a page containing 32 task contexts
1558          */
1559         hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
1560                                  GFP_KERNEL);
1561         if (!hba->task_ctx) {
1562                 printk(KERN_ERR PFX "unable to allocate task context array\n");
1563                 rc = -1;
1564                 goto out1;
1565         }
1566
1567         /*
1568          * Allocate task_ctx_dma which is an array of dma addresses
1569          */
1570         hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
1571                                         sizeof(dma_addr_t)), GFP_KERNEL);
1572         if (!hba->task_ctx_dma) {
1573                 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1574                 rc = -1;
1575                 goto out2;
1576         }
1577
1578         task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1579         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1580
1581                 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1582                                                       PAGE_SIZE,
1583                                                       &hba->task_ctx_dma[i],
1584                                                       GFP_KERNEL);
1585                 if (!hba->task_ctx[i]) {
1586                         printk(KERN_ERR PFX "unable to alloc task context\n");
1587                         rc = -1;
1588                         goto out3;
1589                 }
1590                 memset(hba->task_ctx[i], 0, PAGE_SIZE);
1591                 addr = (u64)hba->task_ctx_dma[i];
1592                 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1593                 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1594                 task_ctx_bdt++;
1595         }
1596         return 0;
1597
1598 out3:
1599         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1600                 if (hba->task_ctx[i]) {
1601
1602                         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1603                                 hba->task_ctx[i], hba->task_ctx_dma[i]);
1604                         hba->task_ctx[i] = NULL;
1605                 }
1606         }
1607
1608         kfree(hba->task_ctx_dma);
1609         hba->task_ctx_dma = NULL;
1610 out2:
1611         kfree(hba->task_ctx);
1612         hba->task_ctx = NULL;
1613 out1:
1614         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1615                         hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1616         hba->task_ctx_bd_tbl = NULL;
1617 out:
1618         return rc;
1619 }
1620
1621 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1622 {
1623         int i;
1624
1625         if (hba->task_ctx_bd_tbl) {
1626                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1627                                     hba->task_ctx_bd_tbl,
1628                                     hba->task_ctx_bd_dma);
1629                 hba->task_ctx_bd_tbl = NULL;
1630         }
1631
1632         if (hba->task_ctx) {
1633                 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1634                         if (hba->task_ctx[i]) {
1635                                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1636                                                     hba->task_ctx[i],
1637                                                     hba->task_ctx_dma[i]);
1638                                 hba->task_ctx[i] = NULL;
1639                         }
1640                 }
1641                 kfree(hba->task_ctx);
1642                 hba->task_ctx = NULL;
1643         }
1644
1645         kfree(hba->task_ctx_dma);
1646         hba->task_ctx_dma = NULL;
1647 }
1648
1649 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1650 {
1651         int i;
1652         int segment_count;
1653         int hash_table_size;
1654         u32 *pbl;
1655
1656         segment_count = hba->hash_tbl_segment_count;
1657         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1658                 sizeof(struct fcoe_hash_table_entry);
1659
1660         pbl = hba->hash_tbl_pbl;
1661         for (i = 0; i < segment_count; ++i) {
1662                 dma_addr_t dma_address;
1663
1664                 dma_address = le32_to_cpu(*pbl);
1665                 ++pbl;
1666                 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
1667                 ++pbl;
1668                 dma_free_coherent(&hba->pcidev->dev,
1669                                   BNX2FC_HASH_TBL_CHUNK_SIZE,
1670                                   hba->hash_tbl_segments[i],
1671                                   dma_address);
1672
1673         }
1674
1675         if (hba->hash_tbl_pbl) {
1676                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1677                                     hba->hash_tbl_pbl,
1678                                     hba->hash_tbl_pbl_dma);
1679                 hba->hash_tbl_pbl = NULL;
1680         }
1681 }
1682
1683 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
1684 {
1685         int i;
1686         int hash_table_size;
1687         int segment_count;
1688         int segment_array_size;
1689         int dma_segment_array_size;
1690         dma_addr_t *dma_segment_array;
1691         u32 *pbl;
1692
1693         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1694                 sizeof(struct fcoe_hash_table_entry);
1695
1696         segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
1697         segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
1698         hba->hash_tbl_segment_count = segment_count;
1699
1700         segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
1701         hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
1702         if (!hba->hash_tbl_segments) {
1703                 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
1704                 return -ENOMEM;
1705         }
1706         dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
1707         dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
1708         if (!dma_segment_array) {
1709                 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
1710                 return -ENOMEM;
1711         }
1712
1713         for (i = 0; i < segment_count; ++i) {
1714                 hba->hash_tbl_segments[i] =
1715                         dma_alloc_coherent(&hba->pcidev->dev,
1716                                            BNX2FC_HASH_TBL_CHUNK_SIZE,
1717                                            &dma_segment_array[i],
1718                                            GFP_KERNEL);
1719                 if (!hba->hash_tbl_segments[i]) {
1720                         printk(KERN_ERR PFX "hash segment alloc failed\n");
1721                         while (--i >= 0) {
1722                                 dma_free_coherent(&hba->pcidev->dev,
1723                                                     BNX2FC_HASH_TBL_CHUNK_SIZE,
1724                                                     hba->hash_tbl_segments[i],
1725                                                     dma_segment_array[i]);
1726                                 hba->hash_tbl_segments[i] = NULL;
1727                         }
1728                         kfree(dma_segment_array);
1729                         return -ENOMEM;
1730                 }
1731                 memset(hba->hash_tbl_segments[i], 0,
1732                        BNX2FC_HASH_TBL_CHUNK_SIZE);
1733         }
1734
1735         hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
1736                                                PAGE_SIZE,
1737                                                &hba->hash_tbl_pbl_dma,
1738                                                GFP_KERNEL);
1739         if (!hba->hash_tbl_pbl) {
1740                 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
1741                 kfree(dma_segment_array);
1742                 return -ENOMEM;
1743         }
1744         memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
1745
1746         pbl = hba->hash_tbl_pbl;
1747         for (i = 0; i < segment_count; ++i) {
1748                 u64 paddr = dma_segment_array[i];
1749                 *pbl = cpu_to_le32((u32) paddr);
1750                 ++pbl;
1751                 *pbl = cpu_to_le32((u32) (paddr >> 32));
1752                 ++pbl;
1753         }
1754         pbl = hba->hash_tbl_pbl;
1755         i = 0;
1756         while (*pbl && *(pbl + 1)) {
1757                 u32 lo;
1758                 u32 hi;
1759                 lo = *pbl;
1760                 ++pbl;
1761                 hi = *pbl;
1762                 ++pbl;
1763                 ++i;
1764         }
1765         kfree(dma_segment_array);
1766         return 0;
1767 }
1768
1769 /**
1770  * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
1771  *
1772  * @hba:        Pointer to adapter structure
1773  *
1774  */
1775 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
1776 {
1777         u64 addr;
1778         u32 mem_size;
1779         int i;
1780
1781         if (bnx2fc_allocate_hash_table(hba))
1782                 return -ENOMEM;
1783
1784         mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1785         hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1786                                                   &hba->t2_hash_tbl_ptr_dma,
1787                                                   GFP_KERNEL);
1788         if (!hba->t2_hash_tbl_ptr) {
1789                 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
1790                 bnx2fc_free_fw_resc(hba);
1791                 return -ENOMEM;
1792         }
1793         memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
1794
1795         mem_size = BNX2FC_NUM_MAX_SESS *
1796                                 sizeof(struct fcoe_t2_hash_table_entry);
1797         hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1798                                               &hba->t2_hash_tbl_dma,
1799                                               GFP_KERNEL);
1800         if (!hba->t2_hash_tbl) {
1801                 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
1802                 bnx2fc_free_fw_resc(hba);
1803                 return -ENOMEM;
1804         }
1805         memset(hba->t2_hash_tbl, 0x00, mem_size);
1806         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
1807                 addr = (unsigned long) hba->t2_hash_tbl_dma +
1808                          ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
1809                 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
1810                 hba->t2_hash_tbl[i].next.hi = addr >> 32;
1811         }
1812
1813         hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1814                                                PAGE_SIZE, &hba->dummy_buf_dma,
1815                                                GFP_KERNEL);
1816         if (!hba->dummy_buffer) {
1817                 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
1818                 bnx2fc_free_fw_resc(hba);
1819                 return -ENOMEM;
1820         }
1821
1822         hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1823                                                PAGE_SIZE,
1824                                                &hba->stats_buf_dma,
1825                                                GFP_KERNEL);
1826         if (!hba->stats_buffer) {
1827                 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
1828                 bnx2fc_free_fw_resc(hba);
1829                 return -ENOMEM;
1830         }
1831         memset(hba->stats_buffer, 0x00, PAGE_SIZE);
1832
1833         return 0;
1834 }
1835
1836 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
1837 {
1838         u32 mem_size;
1839
1840         if (hba->stats_buffer) {
1841                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1842                                   hba->stats_buffer, hba->stats_buf_dma);
1843                 hba->stats_buffer = NULL;
1844         }
1845
1846         if (hba->dummy_buffer) {
1847                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1848                                   hba->dummy_buffer, hba->dummy_buf_dma);
1849                 hba->dummy_buffer = NULL;
1850         }
1851
1852         if (hba->t2_hash_tbl_ptr) {
1853                 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1854                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1855                                     hba->t2_hash_tbl_ptr,
1856                                     hba->t2_hash_tbl_ptr_dma);
1857                 hba->t2_hash_tbl_ptr = NULL;
1858         }
1859
1860         if (hba->t2_hash_tbl) {
1861                 mem_size = BNX2FC_NUM_MAX_SESS *
1862                             sizeof(struct fcoe_t2_hash_table_entry);
1863                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1864                                     hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
1865                 hba->t2_hash_tbl = NULL;
1866         }
1867         bnx2fc_free_hash_table(hba);
1868 }