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 = BNX2FC_MINI_JUMBO_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                 spin_lock_bh(&tgt->tgt_lock);
 594                 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
 595                 spin_unlock_bh(&tgt->tgt_lock);
 596
 597                 if (rq_data) {
 598                         buf = rq_data;
 599                 } else {
 600                         buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
 601                                               GFP_ATOMIC);
 602
 603                         if (!buf1) {
 604                                 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
 605                                 break;
 606                         }
 607
 608                         for (i = 0; i < num_rq; i++) {
 609                                 spin_lock_bh(&tgt->tgt_lock);
 610                                 rq_data = (unsigned char *)
 611                                            bnx2fc_get_next_rqe(tgt, 1);
 612                                 spin_unlock_bh(&tgt->tgt_lock);
 613                                 len = BNX2FC_RQ_BUF_SZ;
 614                                 memcpy(buf1, rq_data, len);
 615                                 buf1 += len;
 616                         }
 617                 }
 618                 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
 619                                               FC_XID_UNKNOWN);
 620
 621                 if (buf != rq_data)
 622                         kfree(buf);
 623                 spin_lock_bh(&tgt->tgt_lock);
 624                 bnx2fc_return_rqe(tgt, num_rq);
 625                 spin_unlock_bh(&tgt->tgt_lock);
 626                 break;
 627
 628         case FCOE_ERROR_DETECTION_CQE_TYPE:
 629                 /*
 630                  * In case of error reporting CQE a single RQ entry
 631                  * is consumed.
 632                  */
 633                 spin_lock_bh(&tgt->tgt_lock);
 634                 num_rq = 1;
 635                 err_entry = (struct fcoe_err_report_entry *)
 636                              bnx2fc_get_next_rqe(tgt, 1);
 637                 xid = err_entry->fc_hdr.ox_id;
 638                 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
 639                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
 640                         err_entry->err_warn_bitmap_hi,
 641                         err_entry->err_warn_bitmap_lo);
 642                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
 643                         err_entry->tx_buf_off, err_entry->rx_buf_off);
 644
 645                 bnx2fc_return_rqe(tgt, 1);
 646
 647                 if (xid > BNX2FC_MAX_XID) {
 648                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
 649                                    xid);
 650                         spin_unlock_bh(&tgt->tgt_lock);
 651                         break;
 652                 }
 653
 654                 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 655                 index = xid % BNX2FC_TASKS_PER_PAGE;
 656                 task_page = (struct fcoe_task_ctx_entry *)
 657                                                 hba->task_ctx[task_idx];
 658                 task = &(task_page[index]);
 659
 660                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 661                 if (!io_req) {
 662                         spin_unlock_bh(&tgt->tgt_lock);
 663                         break;
 664                 }
 665
 666                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 667                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 668                         spin_unlock_bh(&tgt->tgt_lock);
 669                         break;
 670                 }
 671
 672                 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
 673                                        &io_req->req_flags)) {
 674                         BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
 675                                             "progress.. ignore unsol err\n");
 676                         spin_unlock_bh(&tgt->tgt_lock);
 677                         break;
 678                 }
 679
 680                 /*
 681                  * If ABTS is already in progress, and FW error is
 682                  * received after that, do not cancel the timeout_work
 683                  * and let the error recovery continue by explicitly
 684                  * logging out the target, when the ABTS eventually
 685                  * times out.
 686                  */
 687                 if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
 688                                       &io_req->req_flags)) {
 689                         /*
 690                          * Cancel the timeout_work, as we received IO
 691                          * completion with FW error.
 692                          */
 693                         if (cancel_delayed_work(&io_req->timeout_work))
 694                                 kref_put(&io_req->refcount,
 695                                          bnx2fc_cmd_release); /* timer hold */
 696
 697                         rc = bnx2fc_initiate_abts(io_req);
 698                         if (rc != SUCCESS) {
 699                                 BNX2FC_IO_DBG(io_req, "err_warn: initiate_abts "
 700                                         "failed. issue cleanup\n");
 701                                 rc = bnx2fc_initiate_cleanup(io_req);
 702                                 BUG_ON(rc);
 703                         }
 704                 } else
 705                         printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
 706                                             "in ABTS processing\n", xid);
 707                 spin_unlock_bh(&tgt->tgt_lock);
 708                 break;
 709
 710         case FCOE_WARNING_DETECTION_CQE_TYPE:
 711                 /*
 712                  *In case of warning reporting CQE a single RQ entry
 713                  * is consumes.
 714                  */
 715                 spin_lock_bh(&tgt->tgt_lock);
 716                 num_rq = 1;
 717                 err_entry = (struct fcoe_err_report_entry *)
 718                              bnx2fc_get_next_rqe(tgt, 1);
 719                 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
 720                 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
 721                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
 722                         err_entry->err_warn_bitmap_hi,
 723                         err_entry->err_warn_bitmap_lo);
 724                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
 725                         err_entry->tx_buf_off, err_entry->rx_buf_off);
 726
 727                 bnx2fc_return_rqe(tgt, 1);
 728                 spin_unlock_bh(&tgt->tgt_lock);
 729                 break;
 730
 731         default:
 732                 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
 733                 break;
 734         }
 735 }
 736
 737 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
 738 {
 739         struct fcoe_task_ctx_entry *task;
 740         struct fcoe_task_ctx_entry *task_page;
 741         struct fcoe_port *port = tgt->port;
 742         struct bnx2fc_hba *hba = port->priv;
 743         struct bnx2fc_cmd *io_req;
 744         int task_idx, index;
 745         u16 xid;
 746         u8  cmd_type;
 747         u8 rx_state = 0;
 748         u8 num_rq;
 749
 750         spin_lock_bh(&tgt->tgt_lock);
 751         xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
 752         if (xid >= BNX2FC_MAX_TASKS) {
 753                 printk(KERN_ALERT PFX "ERROR:xid out of range\n");
 754                 spin_unlock_bh(&tgt->tgt_lock);
 755                 return;
 756         }
 757         task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 758         index = xid % BNX2FC_TASKS_PER_PAGE;
 759         task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
 760         task = &(task_page[index]);
 761
 762         num_rq = ((task->rx_wr_tx_rd.rx_flags &
 763                    FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE) >>
 764                    FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE_SHIFT);
 765
 766         io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 767
 768         if (io_req == NULL) {
 769                 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
 770                 spin_unlock_bh(&tgt->tgt_lock);
 771                 return;
 772         }
 773
 774         /* Timestamp IO completion time */
 775         cmd_type = io_req->cmd_type;
 776
 777         /* optimized completion path */
 778         if (cmd_type == BNX2FC_SCSI_CMD) {
 779                 rx_state = ((task->rx_wr_tx_rd.rx_flags &
 780                             FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE) >>
 781                             FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE_SHIFT);
 782
 783                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
 784                         bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
 785                         spin_unlock_bh(&tgt->tgt_lock);
 786                         return;
 787                 }
 788         }
 789
 790         /* Process other IO completion types */
 791         switch (cmd_type) {
 792         case BNX2FC_SCSI_CMD:
 793                 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 794                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 795                 else if (rx_state ==
 796                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 797                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 798                 else
 799                         printk(KERN_ERR PFX "Invalid rx state - %d\n",
 800                                 rx_state);
 801                 break;
 802
 803         case BNX2FC_TASK_MGMT_CMD:
 804                 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
 805                 bnx2fc_process_tm_compl(io_req, task, num_rq);
 806                 break;
 807
 808         case BNX2FC_ABTS:
 809                 /*
 810                  * ABTS request received by firmware. ABTS response
 811                  * will be delivered to the task belonging to the IO
 812                  * that was aborted
 813                  */
 814                 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
 815                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 816                 break;
 817
 818         case BNX2FC_ELS:
 819                 BNX2FC_IO_DBG(io_req, "cq_compl - call process_els_compl\n");
 820                 bnx2fc_process_els_compl(io_req, task, num_rq);
 821                 break;
 822
 823         case BNX2FC_CLEANUP:
 824                 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
 825                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 826                 break;
 827
 828         default:
 829                 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
 830                 break;
 831         }
 832         spin_unlock_bh(&tgt->tgt_lock);
 833 }
 834
 835 struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
 836 {
 837         struct bnx2fc_work *work;
 838         work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
 839         if (!work)
 840                 return NULL;
 841
 842         INIT_LIST_HEAD(&work->list);
 843         work->tgt = tgt;
 844         work->wqe = wqe;
 845         return work;
 846 }
 847
 848 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
 849 {
 850         struct fcoe_cqe *cq;
 851         u32 cq_cons;
 852         struct fcoe_cqe *cqe;
 853         u16 wqe;
 854         bool more_cqes_found = false;
 855
 856         /*
 857          * cq_lock is a low contention lock used to protect
 858          * the CQ data structure from being freed up during
 859          * the upload operation
 860          */
 861         spin_lock_bh(&tgt->cq_lock);
 862
 863         if (!tgt->cq) {
 864                 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
 865                 spin_unlock_bh(&tgt->cq_lock);
 866                 return 0;
 867         }
 868         cq = tgt->cq;
 869         cq_cons = tgt->cq_cons_idx;
 870         cqe = &cq[cq_cons];
 871
 872         do {
 873                 more_cqes_found ^= true;
 874
 875                 while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
 876                        (tgt->cq_curr_toggle_bit <<
 877                        FCOE_CQE_TOGGLE_BIT_SHIFT)) {
 878
 879                         /* new entry on the cq */
 880                         if (wqe & FCOE_CQE_CQE_TYPE) {
 881                                 /* Unsolicited event notification */
 882                                 bnx2fc_process_unsol_compl(tgt, wqe);
 883                         } else {
 884                                 struct bnx2fc_work *work = NULL;
 885                                 struct bnx2fc_percpu_s *fps = NULL;
 886                                 unsigned int cpu = wqe % num_possible_cpus();
 887
 888                                 fps = &per_cpu(bnx2fc_percpu, cpu);
 889                                 spin_lock_bh(&fps->fp_work_lock);
 890                                 if (unlikely(!fps->iothread))
 891                                         goto unlock;
 892
 893                                 work = bnx2fc_alloc_work(tgt, wqe);
 894                                 if (work)
 895                                         list_add_tail(&work->list,
 896                                                         &fps->work_list);
 897 unlock:
 898                                 spin_unlock_bh(&fps->fp_work_lock);
 899
 900                                 /* Pending work request completion */
 901                                 if (fps->iothread && work)
 902                                         wake_up_process(fps->iothread);
 903                                 else
 904                                         bnx2fc_process_cq_compl(tgt, wqe);
 905                         }
 906                         cqe++;
 907                         tgt->cq_cons_idx++;
 908
 909                         if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
 910                                 tgt->cq_cons_idx = 0;
 911                                 cqe = cq;
 912                                 tgt->cq_curr_toggle_bit =
 913                                         1 - tgt->cq_curr_toggle_bit;
 914                         }
 915                 }
 916                 /* Re-arm CQ */
 917                 if (more_cqes_found) {
 918                         tgt->conn_db->cq_arm.lo = -1;
 919                         wmb();
 920                 }
 921         } while (more_cqes_found);
 922
 923         /*
 924          * Commit tgt->cq_cons_idx change to the memory
 925          * spin_lock implies full memory barrier, no need to smp_wmb
 926          */
 927
 928         spin_unlock_bh(&tgt->cq_lock);
 929         return 0;
 930 }
 931
 932 /**
 933  * bnx2fc_fastpath_notification - process global event queue (KCQ)
 934  *
 935  * @hba:                adapter structure pointer
 936  * @new_cqe_kcqe:       pointer to newly DMA'd KCQ entry
 937  *
 938  * Fast path event notification handler
 939  */
 940 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
 941                                         struct fcoe_kcqe *new_cqe_kcqe)
 942 {
 943         u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
 944         struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
 945
 946         if (!tgt) {
 947                 printk(KERN_ALERT PFX "conn_id 0x%x not valid\n", conn_id);
 948                 return;
 949         }
 950
 951         bnx2fc_process_new_cqes(tgt);
 952 }
 953
 954 /**
 955  * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
 956  *
 957  * @hba:        adapter structure pointer
 958  * @ofld_kcqe:  connection offload kcqe pointer
 959  *
 960  * handle session offload completion, enable the session if offload is
 961  * successful.
 962  */
 963 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
 964                                         struct fcoe_kcqe *ofld_kcqe)
 965 {
 966         struct bnx2fc_rport             *tgt;
 967         struct fcoe_port                *port;
 968         u32                             conn_id;
 969         u32                             context_id;
 970         int                             rc;
 971
 972         conn_id = ofld_kcqe->fcoe_conn_id;
 973         context_id = ofld_kcqe->fcoe_conn_context_id;
 974         tgt = hba->tgt_ofld_list[conn_id];
 975         if (!tgt) {
 976                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
 977                 return;
 978         }
 979         BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
 980                 ofld_kcqe->fcoe_conn_context_id);
 981         port = tgt->port;
 982         if (hba != tgt->port->priv) {
 983                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: HBA mis-match\n");
 984                 goto ofld_cmpl_err;
 985         }
 986         /*
 987          * cnic has allocated a context_id for this session; use this
 988          * while enabling the session.
 989          */
 990         tgt->context_id = context_id;
 991         if (ofld_kcqe->completion_status) {
 992                 if (ofld_kcqe->completion_status ==
 993                                 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
 994                         printk(KERN_ERR PFX "unable to allocate FCoE context "
 995                                 "resources\n");
 996                         set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
 997                 }
 998                 goto ofld_cmpl_err;
 999         } else {
1000
1001                 /* now enable the session */
1002                 rc = bnx2fc_send_session_enable_req(port, tgt);
1003                 if (rc) {
1004                         printk(KERN_ALERT PFX "enable session failed\n");
1005                         goto ofld_cmpl_err;
1006                 }
1007         }
1008         return;
1009 ofld_cmpl_err:
1010         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1011         wake_up_interruptible(&tgt->ofld_wait);
1012 }
1013
1014 /**
1015  * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1016  *
1017  * @hba:        adapter structure pointer
1018  * @ofld_kcqe:  connection offload kcqe pointer
1019  *
1020  * handle session enable completion, mark the rport as ready
1021  */
1022
1023 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1024                                                 struct fcoe_kcqe *ofld_kcqe)
1025 {
1026         struct bnx2fc_rport             *tgt;
1027         u32                             conn_id;
1028         u32                             context_id;
1029
1030         context_id = ofld_kcqe->fcoe_conn_context_id;
1031         conn_id = ofld_kcqe->fcoe_conn_id;
1032         tgt = hba->tgt_ofld_list[conn_id];
1033         if (!tgt) {
1034                 printk(KERN_ALERT PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1035                 return;
1036         }
1037
1038         BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1039                 ofld_kcqe->fcoe_conn_context_id);
1040
1041         /*
1042          * context_id should be the same for this target during offload
1043          * and enable
1044          */
1045         if (tgt->context_id != context_id) {
1046                 printk(KERN_ALERT PFX "context id mis-match\n");
1047                 return;
1048         }
1049         if (hba != tgt->port->priv) {
1050                 printk(KERN_ALERT PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1051                 goto enbl_cmpl_err;
1052         }
1053         if (ofld_kcqe->completion_status) {
1054                 goto enbl_cmpl_err;
1055         } else {
1056                 /* enable successful - rport ready for issuing IOs */
1057                 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1058                 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1059                 wake_up_interruptible(&tgt->ofld_wait);
1060         }
1061         return;
1062
1063 enbl_cmpl_err:
1064         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1065         wake_up_interruptible(&tgt->ofld_wait);
1066 }
1067
1068 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1069                                         struct fcoe_kcqe *disable_kcqe)
1070 {
1071
1072         struct bnx2fc_rport             *tgt;
1073         u32                             conn_id;
1074
1075         conn_id = disable_kcqe->fcoe_conn_id;
1076         tgt = hba->tgt_ofld_list[conn_id];
1077         if (!tgt) {
1078                 printk(KERN_ALERT PFX "ERROR: disable_cmpl: No disable req\n");
1079                 return;
1080         }
1081
1082         BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1083
1084         if (disable_kcqe->completion_status) {
1085                 printk(KERN_ALERT PFX "ERROR: Disable failed with cmpl status %d\n",
1086                         disable_kcqe->completion_status);
1087                 return;
1088         } else {
1089                 /* disable successful */
1090                 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1091                 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1092                 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1093                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1094                 wake_up_interruptible(&tgt->upld_wait);
1095         }
1096 }
1097
1098 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1099                                         struct fcoe_kcqe *destroy_kcqe)
1100 {
1101         struct bnx2fc_rport             *tgt;
1102         u32                             conn_id;
1103
1104         conn_id = destroy_kcqe->fcoe_conn_id;
1105         tgt = hba->tgt_ofld_list[conn_id];
1106         if (!tgt) {
1107                 printk(KERN_ALERT PFX "destroy_cmpl: No destroy req\n");
1108                 return;
1109         }
1110
1111         BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1112
1113         if (destroy_kcqe->completion_status) {
1114                 printk(KERN_ALERT PFX "Destroy conn failed, cmpl status %d\n",
1115                         destroy_kcqe->completion_status);
1116                 return;
1117         } else {
1118                 /* destroy successful */
1119                 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1120                 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1121                 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1122                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1123                 wake_up_interruptible(&tgt->upld_wait);
1124         }
1125 }
1126
1127 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1128 {
1129         switch (err_code) {
1130         case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1131                 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1132                 break;
1133
1134         case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1135                 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1136                 break;
1137
1138         case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1139                 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1140                 break;
1141
1142         default:
1143                 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1144         }
1145 }
1146
1147 /**
1148  * bnx2fc_indicae_kcqe - process KCQE
1149  *
1150  * @hba:        adapter structure pointer
1151  * @kcqe:       kcqe pointer
1152  * @num_cqe:    Number of completion queue elements
1153  *
1154  * Generic KCQ event handler
1155  */
1156 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1157                                         u32 num_cqe)
1158 {
1159         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1160         int i = 0;
1161         struct fcoe_kcqe *kcqe = NULL;
1162
1163         while (i < num_cqe) {
1164                 kcqe = (struct fcoe_kcqe *) kcq[i++];
1165
1166                 switch (kcqe->op_code) {
1167                 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1168                         bnx2fc_fastpath_notification(hba, kcqe);
1169                         break;
1170
1171                 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1172                         bnx2fc_process_ofld_cmpl(hba, kcqe);
1173                         break;
1174
1175                 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1176                         bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1177                         break;
1178
1179                 case FCOE_KCQE_OPCODE_INIT_FUNC:
1180                         if (kcqe->completion_status !=
1181                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1182                                 bnx2fc_init_failure(hba,
1183                                                 kcqe->completion_status);
1184                         } else {
1185                                 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1186                                 bnx2fc_get_link_state(hba);
1187                                 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1188                                         (u8)hba->pcidev->bus->number);
1189                         }
1190                         break;
1191
1192                 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1193                         if (kcqe->completion_status !=
1194                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1195
1196                                 printk(KERN_ERR PFX "DESTROY failed\n");
1197                         } else {
1198                                 printk(KERN_ERR PFX "DESTROY success\n");
1199                         }
1200                         hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
1201                         wake_up_interruptible(&hba->destroy_wait);
1202                         break;
1203
1204                 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1205                         bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1206                         break;
1207
1208                 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1209                         bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1210                         break;
1211
1212                 case FCOE_KCQE_OPCODE_STAT_FUNC:
1213                         if (kcqe->completion_status !=
1214                             FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1215                                 printk(KERN_ERR PFX "STAT failed\n");
1216                         complete(&hba->stat_req_done);
1217                         break;
1218
1219                 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1220                         /* fall thru */
1221                 default:
1222                         printk(KERN_ALERT PFX "unknown opcode 0x%x\n",
1223                                                                 kcqe->op_code);
1224                 }
1225         }
1226 }
1227
1228 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1229 {
1230         struct fcoe_sqe *sqe;
1231
1232         sqe = &tgt->sq[tgt->sq_prod_idx];
1233
1234         /* Fill SQ WQE */
1235         sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1236         sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1237
1238         /* Advance SQ Prod Idx */
1239         if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1240                 tgt->sq_prod_idx = 0;
1241                 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1242         }
1243 }
1244
1245 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1246 {
1247         struct b577xx_doorbell_set_prod ev_doorbell;
1248         u32 msg;
1249
1250         wmb();
1251
1252         memset(&ev_doorbell, 0, sizeof(struct b577xx_doorbell_set_prod));
1253         ev_doorbell.header.header = B577XX_DOORBELL_HDR_DB_TYPE;
1254
1255         ev_doorbell.prod = tgt->sq_prod_idx |
1256                                 (tgt->sq_curr_toggle_bit << 15);
1257         ev_doorbell.header.header |= B577XX_FCOE_CONNECTION_TYPE <<
1258                                         B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT;
1259         msg = *((u32 *)&ev_doorbell);
1260         writel(cpu_to_le32(msg), tgt->ctx_base);
1261
1262         mmiowb();
1263
1264 }
1265
1266 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1267 {
1268         u32 context_id = tgt->context_id;
1269         struct fcoe_port *port = tgt->port;
1270         u32 reg_off;
1271         resource_size_t reg_base;
1272         struct bnx2fc_hba *hba = port->priv;
1273
1274         reg_base = pci_resource_start(hba->pcidev,
1275                                         BNX2X_DOORBELL_PCI_BAR);
1276         reg_off = BNX2FC_5771X_DB_PAGE_SIZE *
1277                         (context_id & 0x1FFFF) + DPM_TRIGER_TYPE;
1278         tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
1279         if (!tgt->ctx_base)
1280                 return -ENOMEM;
1281         return 0;
1282 }
1283
1284 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1285 {
1286         char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1287
1288         if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1289                 return NULL;
1290
1291         tgt->rq_cons_idx += num_items;
1292
1293         if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1294                 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1295
1296         return buf;
1297 }
1298
1299 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1300 {
1301         /* return the rq buffer */
1302         u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1303         if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1304                 /* Wrap around RQ */
1305                 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1306         }
1307         tgt->rq_prod_idx = next_prod_idx;
1308         tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1309 }
1310
1311 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1312                               struct fcoe_task_ctx_entry *task,
1313                               u16 orig_xid)
1314 {
1315         u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1316         struct bnx2fc_rport *tgt = io_req->tgt;
1317         u32 context_id = tgt->context_id;
1318
1319         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1320
1321         /* Tx Write Rx Read */
1322         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1323                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1324         task->tx_wr_rx_rd.init_flags = task_type <<
1325                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1326         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1327                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1328         /* Common */
1329         task->cmn.common_flags = context_id <<
1330                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1331         task->cmn.general.cleanup_info.task_id = orig_xid;
1332
1333
1334 }
1335
1336 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1337                                 struct fcoe_task_ctx_entry *task)
1338 {
1339         struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1340         struct bnx2fc_rport *tgt = io_req->tgt;
1341         struct fc_frame_header *fc_hdr;
1342         u8 task_type = 0;
1343         u64 *hdr;
1344         u64 temp_hdr[3];
1345         u32 context_id;
1346
1347
1348         /* Obtain task_type */
1349         if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1350             (io_req->cmd_type == BNX2FC_ELS)) {
1351                 task_type = FCOE_TASK_TYPE_MIDPATH;
1352         } else if (io_req->cmd_type == BNX2FC_ABTS) {
1353                 task_type = FCOE_TASK_TYPE_ABTS;
1354         }
1355
1356         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1357
1358         /* Setup the task from io_req for easy reference */
1359         io_req->task = task;
1360
1361         BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1362                 io_req->cmd_type, task_type);
1363
1364         /* Tx only */
1365         if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1366             (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1367                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1368                                 (u32)mp_req->mp_req_bd_dma;
1369                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1370                                 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1371                 task->tx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
1372                 BNX2FC_IO_DBG(io_req, "init_mp_task - bd_dma = 0x%llx\n",
1373                               (unsigned long long)mp_req->mp_req_bd_dma);
1374         }
1375
1376         /* Tx Write Rx Read */
1377         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1378                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1379         task->tx_wr_rx_rd.init_flags = task_type <<
1380                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1381         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
1382                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
1383         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1384                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1385
1386         /* Common */
1387         task->cmn.data_2_trns = io_req->data_xfer_len;
1388         context_id = tgt->context_id;
1389         task->cmn.common_flags = context_id <<
1390                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1391         task->cmn.common_flags |= 1 <<
1392                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
1393         task->cmn.common_flags |= 1 <<
1394                         FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
1395
1396         /* Rx Write Tx Read */
1397         fc_hdr = &(mp_req->req_fc_hdr);
1398         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1399                 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1400                 fc_hdr->fh_rx_id = htons(0xffff);
1401                 task->rx_wr_tx_rd.rx_id = 0xffff;
1402         } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1403                 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1404         }
1405
1406         /* Fill FC Header into middle path buffer */
1407         hdr = (u64 *) &task->cmn.general.cmd_info.mp_fc_frame.fc_hdr;
1408         memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1409         hdr[0] = cpu_to_be64(temp_hdr[0]);
1410         hdr[1] = cpu_to_be64(temp_hdr[1]);
1411         hdr[2] = cpu_to_be64(temp_hdr[2]);
1412
1413         /* Rx Only */
1414         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1415
1416                 task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1417                                 (u32)mp_req->mp_resp_bd_dma;
1418                 task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1419                                 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1420                 task->rx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
1421         }
1422 }
1423
1424 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1425                              struct fcoe_task_ctx_entry *task)
1426 {
1427         u8 task_type;
1428         struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1429         struct io_bdt *bd_tbl = io_req->bd_tbl;
1430         struct bnx2fc_rport *tgt = io_req->tgt;
1431         u64 *fcp_cmnd;
1432         u64 tmp_fcp_cmnd[4];
1433         u32 context_id;
1434         int cnt, i;
1435         int bd_count;
1436
1437         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1438
1439         /* Setup the task from io_req for easy reference */
1440         io_req->task = task;
1441
1442         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1443                 task_type = FCOE_TASK_TYPE_WRITE;
1444         else
1445                 task_type = FCOE_TASK_TYPE_READ;
1446
1447         /* Tx only */
1448         if (task_type == FCOE_TASK_TYPE_WRITE) {
1449                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1450                                 (u32)bd_tbl->bd_tbl_dma;
1451                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1452                                 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1453                 task->tx_wr_only.sgl_ctx.mul_sges.sgl_size =
1454                                 bd_tbl->bd_valid;
1455         }
1456
1457         /*Tx Write Rx Read */
1458         /* Init state to NORMAL */
1459         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1460                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1461         task->tx_wr_rx_rd.init_flags = task_type <<
1462                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1463         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
1464                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
1465         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1466                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1467
1468         /* Common */
1469         task->cmn.data_2_trns = io_req->data_xfer_len;
1470         context_id = tgt->context_id;
1471         task->cmn.common_flags = context_id <<
1472                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1473         task->cmn.common_flags |= 1 <<
1474                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
1475         task->cmn.common_flags |= 1 <<
1476                         FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
1477
1478         /* Set initiative ownership */
1479         task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_SEQ_INIT;
1480
1481         /* Set initial seq counter */
1482         task->cmn.tx_low_seq_cnt = 1;
1483
1484         /* Set state to "waiting for the first packet" */
1485         task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME;
1486
1487         /* Fill FCP_CMND IU */
1488         fcp_cmnd = (u64 *)
1489                     task->cmn.general.cmd_info.fcp_cmd_payload.opaque;
1490         bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1491
1492         /* swap fcp_cmnd */
1493         cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1494
1495         for (i = 0; i < cnt; i++) {
1496                 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1497                 fcp_cmnd++;
1498         }
1499
1500         /* Rx Write Tx Read */
1501         task->rx_wr_tx_rd.rx_id = 0xffff;
1502
1503         /* Rx Only */
1504         if (task_type == FCOE_TASK_TYPE_READ) {
1505
1506                 bd_count = bd_tbl->bd_valid;
1507                 if (bd_count == 1) {
1508
1509                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1510
1511                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.lo =
1512                                         fcoe_bd_tbl->buf_addr_lo;
1513                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.hi =
1514                                         fcoe_bd_tbl->buf_addr_hi;
1515                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_rem =
1516                                         fcoe_bd_tbl->buf_len;
1517                         task->tx_wr_rx_rd.init_flags |= 1 <<
1518                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE_SHIFT;
1519                 } else {
1520
1521                         task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1522                                         (u32)bd_tbl->bd_tbl_dma;
1523                         task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1524                                         (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1525                         task->rx_wr_only.sgl_ctx.mul_sges.sgl_size =
1526                                         bd_tbl->bd_valid;
1527                 }
1528         }
1529 }
1530
1531 /**
1532  * bnx2fc_setup_task_ctx - allocate and map task context
1533  *
1534  * @hba:        pointer to adapter structure
1535  *
1536  * allocate memory for task context, and associated BD table to be used
1537  * by firmware
1538  *
1539  */
1540 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1541 {
1542         int rc = 0;
1543         struct regpair *task_ctx_bdt;
1544         dma_addr_t addr;
1545         int i;
1546
1547         /*
1548          * Allocate task context bd table. A page size of bd table
1549          * can map 256 buffers. Each buffer contains 32 task context
1550          * entries. Hence the limit with one page is 8192 task context
1551          * entries.
1552          */
1553         hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1554                                                   PAGE_SIZE,
1555                                                   &hba->task_ctx_bd_dma,
1556                                                   GFP_KERNEL);
1557         if (!hba->task_ctx_bd_tbl) {
1558                 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1559                 rc = -1;
1560                 goto out;
1561         }
1562         memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
1563
1564         /*
1565          * Allocate task_ctx which is an array of pointers pointing to
1566          * a page containing 32 task contexts
1567          */
1568         hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
1569                                  GFP_KERNEL);
1570         if (!hba->task_ctx) {
1571                 printk(KERN_ERR PFX "unable to allocate task context array\n");
1572                 rc = -1;
1573                 goto out1;
1574         }
1575
1576         /*
1577          * Allocate task_ctx_dma which is an array of dma addresses
1578          */
1579         hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
1580                                         sizeof(dma_addr_t)), GFP_KERNEL);
1581         if (!hba->task_ctx_dma) {
1582                 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1583                 rc = -1;
1584                 goto out2;
1585         }
1586
1587         task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1588         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1589
1590                 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1591                                                       PAGE_SIZE,
1592                                                       &hba->task_ctx_dma[i],
1593                                                       GFP_KERNEL);
1594                 if (!hba->task_ctx[i]) {
1595                         printk(KERN_ERR PFX "unable to alloc task context\n");
1596                         rc = -1;
1597                         goto out3;
1598                 }
1599                 memset(hba->task_ctx[i], 0, PAGE_SIZE);
1600                 addr = (u64)hba->task_ctx_dma[i];
1601                 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1602                 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1603                 task_ctx_bdt++;
1604         }
1605         return 0;
1606
1607 out3:
1608         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1609                 if (hba->task_ctx[i]) {
1610
1611                         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1612                                 hba->task_ctx[i], hba->task_ctx_dma[i]);
1613                         hba->task_ctx[i] = NULL;
1614                 }
1615         }
1616
1617         kfree(hba->task_ctx_dma);
1618         hba->task_ctx_dma = NULL;
1619 out2:
1620         kfree(hba->task_ctx);
1621         hba->task_ctx = NULL;
1622 out1:
1623         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1624                         hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1625         hba->task_ctx_bd_tbl = NULL;
1626 out:
1627         return rc;
1628 }
1629
1630 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1631 {
1632         int i;
1633
1634         if (hba->task_ctx_bd_tbl) {
1635                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1636                                     hba->task_ctx_bd_tbl,
1637                                     hba->task_ctx_bd_dma);
1638                 hba->task_ctx_bd_tbl = NULL;
1639         }
1640
1641         if (hba->task_ctx) {
1642                 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1643                         if (hba->task_ctx[i]) {
1644                                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1645                                                     hba->task_ctx[i],
1646                                                     hba->task_ctx_dma[i]);
1647                                 hba->task_ctx[i] = NULL;
1648                         }
1649                 }
1650                 kfree(hba->task_ctx);
1651                 hba->task_ctx = NULL;
1652         }
1653
1654         kfree(hba->task_ctx_dma);
1655         hba->task_ctx_dma = NULL;
1656 }
1657
1658 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1659 {
1660         int i;
1661         int segment_count;
1662         int hash_table_size;
1663         u32 *pbl;
1664
1665         segment_count = hba->hash_tbl_segment_count;
1666         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1667                 sizeof(struct fcoe_hash_table_entry);
1668
1669         pbl = hba->hash_tbl_pbl;
1670         for (i = 0; i < segment_count; ++i) {
1671                 dma_addr_t dma_address;
1672
1673                 dma_address = le32_to_cpu(*pbl);
1674                 ++pbl;
1675                 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
1676                 ++pbl;
1677                 dma_free_coherent(&hba->pcidev->dev,
1678                                   BNX2FC_HASH_TBL_CHUNK_SIZE,
1679                                   hba->hash_tbl_segments[i],
1680                                   dma_address);
1681
1682         }
1683
1684         if (hba->hash_tbl_pbl) {
1685                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1686                                     hba->hash_tbl_pbl,
1687                                     hba->hash_tbl_pbl_dma);
1688                 hba->hash_tbl_pbl = NULL;
1689         }
1690 }
1691
1692 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
1693 {
1694         int i;
1695         int hash_table_size;
1696         int segment_count;
1697         int segment_array_size;
1698         int dma_segment_array_size;
1699         dma_addr_t *dma_segment_array;
1700         u32 *pbl;
1701
1702         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1703                 sizeof(struct fcoe_hash_table_entry);
1704
1705         segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
1706         segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
1707         hba->hash_tbl_segment_count = segment_count;
1708
1709         segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
1710         hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
1711         if (!hba->hash_tbl_segments) {
1712                 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
1713                 return -ENOMEM;
1714         }
1715         dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
1716         dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
1717         if (!dma_segment_array) {
1718                 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
1719                 return -ENOMEM;
1720         }
1721
1722         for (i = 0; i < segment_count; ++i) {
1723                 hba->hash_tbl_segments[i] =
1724                         dma_alloc_coherent(&hba->pcidev->dev,
1725                                            BNX2FC_HASH_TBL_CHUNK_SIZE,
1726                                            &dma_segment_array[i],
1727                                            GFP_KERNEL);
1728                 if (!hba->hash_tbl_segments[i]) {
1729                         printk(KERN_ERR PFX "hash segment alloc failed\n");
1730                         while (--i >= 0) {
1731                                 dma_free_coherent(&hba->pcidev->dev,
1732                                                     BNX2FC_HASH_TBL_CHUNK_SIZE,
1733                                                     hba->hash_tbl_segments[i],
1734                                                     dma_segment_array[i]);
1735                                 hba->hash_tbl_segments[i] = NULL;
1736                         }
1737                         kfree(dma_segment_array);
1738                         return -ENOMEM;
1739                 }
1740                 memset(hba->hash_tbl_segments[i], 0,
1741                        BNX2FC_HASH_TBL_CHUNK_SIZE);
1742         }
1743
1744         hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
1745                                                PAGE_SIZE,
1746                                                &hba->hash_tbl_pbl_dma,
1747                                                GFP_KERNEL);
1748         if (!hba->hash_tbl_pbl) {
1749                 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
1750                 kfree(dma_segment_array);
1751                 return -ENOMEM;
1752         }
1753         memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
1754
1755         pbl = hba->hash_tbl_pbl;
1756         for (i = 0; i < segment_count; ++i) {
1757                 u64 paddr = dma_segment_array[i];
1758                 *pbl = cpu_to_le32((u32) paddr);
1759                 ++pbl;
1760                 *pbl = cpu_to_le32((u32) (paddr >> 32));
1761                 ++pbl;
1762         }
1763         pbl = hba->hash_tbl_pbl;
1764         i = 0;
1765         while (*pbl && *(pbl + 1)) {
1766                 u32 lo;
1767                 u32 hi;
1768                 lo = *pbl;
1769                 ++pbl;
1770                 hi = *pbl;
1771                 ++pbl;
1772                 ++i;
1773         }
1774         kfree(dma_segment_array);
1775         return 0;
1776 }
1777
1778 /**
1779  * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
1780  *
1781  * @hba:        Pointer to adapter structure
1782  *
1783  */
1784 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
1785 {
1786         u64 addr;
1787         u32 mem_size;
1788         int i;
1789
1790         if (bnx2fc_allocate_hash_table(hba))
1791                 return -ENOMEM;
1792
1793         mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1794         hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1795                                                   &hba->t2_hash_tbl_ptr_dma,
1796                                                   GFP_KERNEL);
1797         if (!hba->t2_hash_tbl_ptr) {
1798                 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
1799                 bnx2fc_free_fw_resc(hba);
1800                 return -ENOMEM;
1801         }
1802         memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
1803
1804         mem_size = BNX2FC_NUM_MAX_SESS *
1805                                 sizeof(struct fcoe_t2_hash_table_entry);
1806         hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1807                                               &hba->t2_hash_tbl_dma,
1808                                               GFP_KERNEL);
1809         if (!hba->t2_hash_tbl) {
1810                 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
1811                 bnx2fc_free_fw_resc(hba);
1812                 return -ENOMEM;
1813         }
1814         memset(hba->t2_hash_tbl, 0x00, mem_size);
1815         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
1816                 addr = (unsigned long) hba->t2_hash_tbl_dma +
1817                          ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
1818                 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
1819                 hba->t2_hash_tbl[i].next.hi = addr >> 32;
1820         }
1821
1822         hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1823                                                PAGE_SIZE, &hba->dummy_buf_dma,
1824                                                GFP_KERNEL);
1825         if (!hba->dummy_buffer) {
1826                 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
1827                 bnx2fc_free_fw_resc(hba);
1828                 return -ENOMEM;
1829         }
1830
1831         hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1832                                                PAGE_SIZE,
1833                                                &hba->stats_buf_dma,
1834                                                GFP_KERNEL);
1835         if (!hba->stats_buffer) {
1836                 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
1837                 bnx2fc_free_fw_resc(hba);
1838                 return -ENOMEM;
1839         }
1840         memset(hba->stats_buffer, 0x00, PAGE_SIZE);
1841
1842         return 0;
1843 }
1844
1845 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
1846 {
1847         u32 mem_size;
1848
1849         if (hba->stats_buffer) {
1850                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1851                                   hba->stats_buffer, hba->stats_buf_dma);
1852                 hba->stats_buffer = NULL;
1853         }
1854
1855         if (hba->dummy_buffer) {
1856                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1857                                   hba->dummy_buffer, hba->dummy_buf_dma);
1858                 hba->dummy_buffer = NULL;
1859         }
1860
1861         if (hba->t2_hash_tbl_ptr) {
1862                 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1863                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1864                                     hba->t2_hash_tbl_ptr,
1865                                     hba->t2_hash_tbl_ptr_dma);
1866                 hba->t2_hash_tbl_ptr = NULL;
1867         }
1868
1869         if (hba->t2_hash_tbl) {
1870                 mem_size = BNX2FC_NUM_MAX_SESS *
1871                             sizeof(struct fcoe_t2_hash_table_entry);
1872                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1873                                     hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
1874                 hba->t2_hash_tbl = NULL;
1875         }
1876         bnx2fc_free_hash_table(hba);
1877 }