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.hsi_major_version = FCOE_HSI_MAJOR_VERSION;
 104         fcoe_init2.hsi_minor_version = FCOE_HSI_MINOR_VERSION;
 105
 106         fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
 107         fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
 108                                            ((u64) hba->hash_tbl_pbl_dma >> 32);
 109
 110         fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
 111         fcoe_init2.t2_hash_tbl_addr_hi = (u32)
 112                                           ((u64) hba->t2_hash_tbl_dma >> 32);
 113
 114         fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
 115         fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
 116                                         ((u64) hba->t2_hash_tbl_ptr_dma >> 32);
 117
 118         fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
 119
 120         /* fill init3 KWQE */
 121         memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
 122         fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
 123         fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 124                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 125         fcoe_init3.error_bit_map_lo = 0xffffffff;
 126         fcoe_init3.error_bit_map_hi = 0xffffffff;
 127
 128         fcoe_init3.perf_config = 1;
 129
 130         kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
 131         kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
 132         kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
 133
 134         if (hba->cnic && hba->cnic->submit_kwqes)
 135                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 136
 137         return rc;
 138 }
 139 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
 140 {
 141         struct fcoe_kwqe_destroy fcoe_destroy;
 142         struct kwqe *kwqe_arr[2];
 143         int num_kwqes = 1;
 144         int rc = -1;
 145
 146         /* fill destroy KWQE */
 147         memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
 148         fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
 149         fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 150                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 151         kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
 152
 153         if (hba->cnic && hba->cnic->submit_kwqes)
 154                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 155         return rc;
 156 }
 157
 158 /**
 159  * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
 160  *
 161  * @port:               port structure pointer
 162  * @tgt:                bnx2fc_rport structure pointer
 163  */
 164 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
 165                                         struct bnx2fc_rport *tgt)
 166 {
 167         struct fc_lport *lport = port->lport;
 168         struct bnx2fc_hba *hba = port->priv;
 169         struct kwqe *kwqe_arr[4];
 170         struct fcoe_kwqe_conn_offload1 ofld_req1;
 171         struct fcoe_kwqe_conn_offload2 ofld_req2;
 172         struct fcoe_kwqe_conn_offload3 ofld_req3;
 173         struct fcoe_kwqe_conn_offload4 ofld_req4;
 174         struct fc_rport_priv *rdata = tgt->rdata;
 175         struct fc_rport *rport = tgt->rport;
 176         int num_kwqes = 4;
 177         u32 port_id;
 178         int rc = 0;
 179         u16 conn_id;
 180
 181         /* Initialize offload request 1 structure */
 182         memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
 183
 184         ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
 185         ofld_req1.hdr.flags =
 186                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 187
 188
 189         conn_id = (u16)tgt->fcoe_conn_id;
 190         ofld_req1.fcoe_conn_id = conn_id;
 191
 192
 193         ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
 194         ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
 195
 196         ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
 197         ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
 198
 199         ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
 200         ofld_req1.rq_first_pbe_addr_hi =
 201                                 (u32)((u64) tgt->rq_dma >> 32);
 202
 203         ofld_req1.rq_prod = 0x8000;
 204
 205         /* Initialize offload request 2 structure */
 206         memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
 207
 208         ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
 209         ofld_req2.hdr.flags =
 210                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 211
 212         ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
 213
 214         ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
 215         ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
 216
 217         ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
 218         ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
 219
 220         ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
 221         ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
 222
 223         /* Initialize offload request 3 structure */
 224         memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
 225
 226         ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
 227         ofld_req3.hdr.flags =
 228                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 229
 230         ofld_req3.vlan_tag = hba->vlan_id <<
 231                                 FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
 232         ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
 233
 234         port_id = fc_host_port_id(lport->host);
 235         if (port_id == 0) {
 236                 BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?\n");
 237                 return -EINVAL;
 238         }
 239
 240         /*
 241          * Store s_id of the initiator for further reference. This will
 242          * be used during disable/destroy during linkdown processing as
 243          * when the lport is reset, the port_id also is reset to 0
 244          */
 245         tgt->sid = port_id;
 246         ofld_req3.s_id[0] = (port_id & 0x000000FF);
 247         ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
 248         ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
 249
 250         port_id = rport->port_id;
 251         ofld_req3.d_id[0] = (port_id & 0x000000FF);
 252         ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
 253         ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
 254
 255         ofld_req3.tx_total_conc_seqs = rdata->max_seq;
 256
 257         ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
 258         ofld_req3.rx_max_fc_pay_len  = lport->mfs;
 259
 260         ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
 261         ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
 262         ofld_req3.rx_open_seqs_exch_c3 = 1;
 263
 264         ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
 265         ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
 266
 267         /* set mul_n_port_ids supported flag to 0, until it is supported */
 268         ofld_req3.flags = 0;
 269         /*
 270         ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
 271                             FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
 272         */
 273         /* Info from PLOGI response */
 274         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
 275                              FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
 276
 277         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
 278                              FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
 279
 280         /* vlan flag */
 281         ofld_req3.flags |= (hba->vlan_enabled <<
 282                             FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
 283
 284         /* C2_VALID and ACK flags are not set as they are not suppported */
 285
 286
 287         /* Initialize offload request 4 structure */
 288         memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
 289         ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
 290         ofld_req4.hdr.flags =
 291                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 292
 293         ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
 294
 295
 296         ofld_req4.src_mac_addr_lo[0] =  port->data_src_addr[5];
 297                                                         /* local mac */
 298         ofld_req4.src_mac_addr_lo[1] =  port->data_src_addr[4];
 299         ofld_req4.src_mac_addr_mid[0] =  port->data_src_addr[3];
 300         ofld_req4.src_mac_addr_mid[1] =  port->data_src_addr[2];
 301         ofld_req4.src_mac_addr_hi[0] =  port->data_src_addr[1];
 302         ofld_req4.src_mac_addr_hi[1] =  port->data_src_addr[0];
 303         ofld_req4.dst_mac_addr_lo[0] =  hba->ctlr.dest_addr[5];/* fcf mac */
 304         ofld_req4.dst_mac_addr_lo[1] =  hba->ctlr.dest_addr[4];
 305         ofld_req4.dst_mac_addr_mid[0] =  hba->ctlr.dest_addr[3];
 306         ofld_req4.dst_mac_addr_mid[1] =  hba->ctlr.dest_addr[2];
 307         ofld_req4.dst_mac_addr_hi[0] =  hba->ctlr.dest_addr[1];
 308         ofld_req4.dst_mac_addr_hi[1] =  hba->ctlr.dest_addr[0];
 309
 310         ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
 311         ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
 312
 313         ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
 314         ofld_req4.confq_pbl_base_addr_hi =
 315                                         (u32)((u64) tgt->confq_pbl_dma >> 32);
 316
 317         kwqe_arr[0] = (struct kwqe *) &ofld_req1;
 318         kwqe_arr[1] = (struct kwqe *) &ofld_req2;
 319         kwqe_arr[2] = (struct kwqe *) &ofld_req3;
 320         kwqe_arr[3] = (struct kwqe *) &ofld_req4;
 321
 322         if (hba->cnic && hba->cnic->submit_kwqes)
 323                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 324
 325         return rc;
 326 }
 327
 328 /**
 329  * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
 330  *
 331  * @port:               port structure pointer
 332  * @tgt:                bnx2fc_rport structure pointer
 333  */
 334 static int bnx2fc_send_session_enable_req(struct fcoe_port *port,
 335                                         struct bnx2fc_rport *tgt)
 336 {
 337         struct kwqe *kwqe_arr[2];
 338         struct bnx2fc_hba *hba = port->priv;
 339         struct fcoe_kwqe_conn_enable_disable enbl_req;
 340         struct fc_lport *lport = port->lport;
 341         struct fc_rport *rport = tgt->rport;
 342         int num_kwqes = 1;
 343         int rc = 0;
 344         u32 port_id;
 345
 346         memset(&enbl_req, 0x00,
 347                sizeof(struct fcoe_kwqe_conn_enable_disable));
 348         enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
 349         enbl_req.hdr.flags =
 350                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 351
 352         enbl_req.src_mac_addr_lo[0] =  port->data_src_addr[5];
 353                                                         /* local mac */
 354         enbl_req.src_mac_addr_lo[1] =  port->data_src_addr[4];
 355         enbl_req.src_mac_addr_mid[0] =  port->data_src_addr[3];
 356         enbl_req.src_mac_addr_mid[1] =  port->data_src_addr[2];
 357         enbl_req.src_mac_addr_hi[0] =  port->data_src_addr[1];
 358         enbl_req.src_mac_addr_hi[1] =  port->data_src_addr[0];
 359         memcpy(tgt->src_addr, port->data_src_addr, ETH_ALEN);
 360
 361         enbl_req.dst_mac_addr_lo[0] =  hba->ctlr.dest_addr[5];/* fcf mac */
 362         enbl_req.dst_mac_addr_lo[1] =  hba->ctlr.dest_addr[4];
 363         enbl_req.dst_mac_addr_mid[0] =  hba->ctlr.dest_addr[3];
 364         enbl_req.dst_mac_addr_mid[1] =  hba->ctlr.dest_addr[2];
 365         enbl_req.dst_mac_addr_hi[0] =  hba->ctlr.dest_addr[1];
 366         enbl_req.dst_mac_addr_hi[1] =  hba->ctlr.dest_addr[0];
 367
 368         port_id = fc_host_port_id(lport->host);
 369         if (port_id != tgt->sid) {
 370                 printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
 371                                 "sid = 0x%x\n", port_id, tgt->sid);
 372                 port_id = tgt->sid;
 373         }
 374         enbl_req.s_id[0] = (port_id & 0x000000FF);
 375         enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 376         enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 377
 378         port_id = rport->port_id;
 379         enbl_req.d_id[0] = (port_id & 0x000000FF);
 380         enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 381         enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 382         enbl_req.vlan_tag = hba->vlan_id <<
 383                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 384         enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 385         enbl_req.vlan_flag = hba->vlan_enabled;
 386         enbl_req.context_id = tgt->context_id;
 387         enbl_req.conn_id = tgt->fcoe_conn_id;
 388
 389         kwqe_arr[0] = (struct kwqe *) &enbl_req;
 390
 391         if (hba->cnic && hba->cnic->submit_kwqes)
 392                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 393         return rc;
 394 }
 395
 396 /**
 397  * bnx2fc_send_session_disable_req - initiates FCoE Session disable
 398  *
 399  * @port:               port structure pointer
 400  * @tgt:                bnx2fc_rport structure pointer
 401  */
 402 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
 403                                     struct bnx2fc_rport *tgt)
 404 {
 405         struct bnx2fc_hba *hba = port->priv;
 406         struct fcoe_kwqe_conn_enable_disable disable_req;
 407         struct kwqe *kwqe_arr[2];
 408         struct fc_rport *rport = tgt->rport;
 409         int num_kwqes = 1;
 410         int rc = 0;
 411         u32 port_id;
 412
 413         memset(&disable_req, 0x00,
 414                sizeof(struct fcoe_kwqe_conn_enable_disable));
 415         disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
 416         disable_req.hdr.flags =
 417                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 418
 419         disable_req.src_mac_addr_lo[0] =  tgt->src_addr[5];
 420         disable_req.src_mac_addr_lo[1] =  tgt->src_addr[4];
 421         disable_req.src_mac_addr_mid[0] =  tgt->src_addr[3];
 422         disable_req.src_mac_addr_mid[1] =  tgt->src_addr[2];
 423         disable_req.src_mac_addr_hi[0] =  tgt->src_addr[1];
 424         disable_req.src_mac_addr_hi[1] =  tgt->src_addr[0];
 425
 426         disable_req.dst_mac_addr_lo[0] =  hba->ctlr.dest_addr[5];/* fcf mac */
 427         disable_req.dst_mac_addr_lo[1] =  hba->ctlr.dest_addr[4];
 428         disable_req.dst_mac_addr_mid[0] =  hba->ctlr.dest_addr[3];
 429         disable_req.dst_mac_addr_mid[1] =  hba->ctlr.dest_addr[2];
 430         disable_req.dst_mac_addr_hi[0] =  hba->ctlr.dest_addr[1];
 431         disable_req.dst_mac_addr_hi[1] =  hba->ctlr.dest_addr[0];
 432
 433         port_id = tgt->sid;
 434         disable_req.s_id[0] = (port_id & 0x000000FF);
 435         disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 436         disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 437
 438
 439         port_id = rport->port_id;
 440         disable_req.d_id[0] = (port_id & 0x000000FF);
 441         disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 442         disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 443         disable_req.context_id = tgt->context_id;
 444         disable_req.conn_id = tgt->fcoe_conn_id;
 445         disable_req.vlan_tag = hba->vlan_id <<
 446                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 447         disable_req.vlan_tag |=
 448                         3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 449         disable_req.vlan_flag = hba->vlan_enabled;
 450
 451         kwqe_arr[0] = (struct kwqe *) &disable_req;
 452
 453         if (hba->cnic && hba->cnic->submit_kwqes)
 454                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 455
 456         return rc;
 457 }
 458
 459 /**
 460  * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
 461  *
 462  * @port:               port structure pointer
 463  * @tgt:                bnx2fc_rport structure pointer
 464  */
 465 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
 466                                         struct bnx2fc_rport *tgt)
 467 {
 468         struct fcoe_kwqe_conn_destroy destroy_req;
 469         struct kwqe *kwqe_arr[2];
 470         int num_kwqes = 1;
 471         int rc = 0;
 472
 473         memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
 474         destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
 475         destroy_req.hdr.flags =
 476                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 477
 478         destroy_req.context_id = tgt->context_id;
 479         destroy_req.conn_id = tgt->fcoe_conn_id;
 480
 481         kwqe_arr[0] = (struct kwqe *) &destroy_req;
 482
 483         if (hba->cnic && hba->cnic->submit_kwqes)
 484                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 485
 486         return rc;
 487 }
 488
 489 static bool is_valid_lport(struct bnx2fc_hba *hba, struct fc_lport *lport)
 490 {
 491         struct bnx2fc_lport *blport;
 492
 493         spin_lock_bh(&hba->hba_lock);
 494         list_for_each_entry(blport, &hba->vports, list) {
 495                 if (blport->lport == lport) {
 496                         spin_unlock_bh(&hba->hba_lock);
 497                         return true;
 498                 }
 499         }
 500         spin_unlock_bh(&hba->hba_lock);
 501         return false;
 502
 503 }
 504
 505
 506 static void bnx2fc_unsol_els_work(struct work_struct *work)
 507 {
 508         struct bnx2fc_unsol_els *unsol_els;
 509         struct fc_lport *lport;
 510         struct bnx2fc_hba *hba;
 511         struct fc_frame *fp;
 512
 513         unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
 514         lport = unsol_els->lport;
 515         fp = unsol_els->fp;
 516         hba = unsol_els->hba;
 517         if (is_valid_lport(hba, lport))
 518                 fc_exch_recv(lport, fp);
 519         kfree(unsol_els);
 520 }
 521
 522 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
 523                                    unsigned char *buf,
 524                                    u32 frame_len, u16 l2_oxid)
 525 {
 526         struct fcoe_port *port = tgt->port;
 527         struct fc_lport *lport = port->lport;
 528         struct bnx2fc_hba *hba = port->priv;
 529         struct bnx2fc_unsol_els *unsol_els;
 530         struct fc_frame_header *fh;
 531         struct fc_frame *fp;
 532         struct sk_buff *skb;
 533         u32 payload_len;
 534         u32 crc;
 535         u8 op;
 536
 537
 538         unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
 539         if (!unsol_els) {
 540                 BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work\n");
 541                 return;
 542         }
 543
 544         BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d\n",
 545                 l2_oxid, frame_len);
 546
 547         payload_len = frame_len - sizeof(struct fc_frame_header);
 548
 549         fp = fc_frame_alloc(lport, payload_len);
 550         if (!fp) {
 551                 printk(KERN_ERR PFX "fc_frame_alloc failure\n");
 552                 kfree(unsol_els);
 553                 return;
 554         }
 555
 556         fh = (struct fc_frame_header *) fc_frame_header_get(fp);
 557         /* Copy FC Frame header and payload into the frame */
 558         memcpy(fh, buf, frame_len);
 559
 560         if (l2_oxid != FC_XID_UNKNOWN)
 561                 fh->fh_ox_id = htons(l2_oxid);
 562
 563         skb = fp_skb(fp);
 564
 565         if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
 566             (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
 567
 568                 if (fh->fh_type == FC_TYPE_ELS) {
 569                         op = fc_frame_payload_op(fp);
 570                         if ((op == ELS_TEST) || (op == ELS_ESTC) ||
 571                             (op == ELS_FAN) || (op == ELS_CSU)) {
 572                                 /*
 573                                  * No need to reply for these
 574                                  * ELS requests
 575                                  */
 576                                 printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
 577                                 kfree_skb(skb);
 578                                 kfree(unsol_els);
 579                                 return;
 580                         }
 581                 }
 582                 crc = fcoe_fc_crc(fp);
 583                 fc_frame_init(fp);
 584                 fr_dev(fp) = lport;
 585                 fr_sof(fp) = FC_SOF_I3;
 586                 fr_eof(fp) = FC_EOF_T;
 587                 fr_crc(fp) = cpu_to_le32(~crc);
 588                 unsol_els->lport = lport;
 589                 unsol_els->hba = hba;
 590                 unsol_els->fp = fp;
 591                 INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
 592                 queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
 593         } else {
 594                 BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
 595                 kfree_skb(skb);
 596                 kfree(unsol_els);
 597         }
 598 }
 599
 600 static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
 601 {
 602         u8 num_rq;
 603         struct fcoe_err_report_entry *err_entry;
 604         unsigned char *rq_data;
 605         unsigned char *buf = NULL, *buf1;
 606         int i;
 607         u16 xid;
 608         u32 frame_len, len;
 609         struct bnx2fc_cmd *io_req = NULL;
 610         struct fcoe_task_ctx_entry *task, *task_page;
 611         struct bnx2fc_hba *hba = tgt->port->priv;
 612         int task_idx, index;
 613         int rc = 0;
 614
 615
 616         BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
 617         switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
 618         case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
 619                 frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
 620                              FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
 621
 622                 num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
 623
 624                 spin_lock_bh(&tgt->tgt_lock);
 625                 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
 626                 spin_unlock_bh(&tgt->tgt_lock);
 627
 628                 if (rq_data) {
 629                         buf = rq_data;
 630                 } else {
 631                         buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
 632                                               GFP_ATOMIC);
 633
 634                         if (!buf1) {
 635                                 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
 636                                 break;
 637                         }
 638
 639                         for (i = 0; i < num_rq; i++) {
 640                                 spin_lock_bh(&tgt->tgt_lock);
 641                                 rq_data = (unsigned char *)
 642                                            bnx2fc_get_next_rqe(tgt, 1);
 643                                 spin_unlock_bh(&tgt->tgt_lock);
 644                                 len = BNX2FC_RQ_BUF_SZ;
 645                                 memcpy(buf1, rq_data, len);
 646                                 buf1 += len;
 647                         }
 648                 }
 649                 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
 650                                               FC_XID_UNKNOWN);
 651
 652                 if (buf != rq_data)
 653                         kfree(buf);
 654                 spin_lock_bh(&tgt->tgt_lock);
 655                 bnx2fc_return_rqe(tgt, num_rq);
 656                 spin_unlock_bh(&tgt->tgt_lock);
 657                 break;
 658
 659         case FCOE_ERROR_DETECTION_CQE_TYPE:
 660                 /*
 661                  * In case of error reporting CQE a single RQ entry
 662                  * is consumed.
 663                  */
 664                 spin_lock_bh(&tgt->tgt_lock);
 665                 num_rq = 1;
 666                 err_entry = (struct fcoe_err_report_entry *)
 667                              bnx2fc_get_next_rqe(tgt, 1);
 668                 xid = err_entry->fc_hdr.ox_id;
 669                 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
 670                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
 671                         err_entry->data.err_warn_bitmap_hi,
 672                         err_entry->data.err_warn_bitmap_lo);
 673                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
 674                         err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 675
 676                 bnx2fc_return_rqe(tgt, 1);
 677
 678                 if (xid > BNX2FC_MAX_XID) {
 679                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
 680                                    xid);
 681                         spin_unlock_bh(&tgt->tgt_lock);
 682                         break;
 683                 }
 684
 685                 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 686                 index = xid % BNX2FC_TASKS_PER_PAGE;
 687                 task_page = (struct fcoe_task_ctx_entry *)
 688                                                 hba->task_ctx[task_idx];
 689                 task = &(task_page[index]);
 690
 691                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 692                 if (!io_req) {
 693                         spin_unlock_bh(&tgt->tgt_lock);
 694                         break;
 695                 }
 696
 697                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 698                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 699                         spin_unlock_bh(&tgt->tgt_lock);
 700                         break;
 701                 }
 702
 703                 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
 704                                        &io_req->req_flags)) {
 705                         BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
 706                                             "progress.. ignore unsol err\n");
 707                         spin_unlock_bh(&tgt->tgt_lock);
 708                         break;
 709                 }
 710
 711                 /*
 712                  * If ABTS is already in progress, and FW error is
 713                  * received after that, do not cancel the timeout_work
 714                  * and let the error recovery continue by explicitly
 715                  * logging out the target, when the ABTS eventually
 716                  * times out.
 717                  */
 718                 if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
 719                                       &io_req->req_flags)) {
 720                         /*
 721                          * Cancel the timeout_work, as we received IO
 722                          * completion with FW error.
 723                          */
 724                         if (cancel_delayed_work(&io_req->timeout_work))
 725                                 kref_put(&io_req->refcount,
 726                                          bnx2fc_cmd_release); /* timer hold */
 727
 728                         rc = bnx2fc_initiate_abts(io_req);
 729                         if (rc != SUCCESS) {
 730                                 BNX2FC_IO_DBG(io_req, "err_warn: initiate_abts "
 731                                         "failed. issue cleanup\n");
 732                                 rc = bnx2fc_initiate_cleanup(io_req);
 733                                 BUG_ON(rc);
 734                         }
 735                 } else
 736                         printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
 737                                             "in ABTS processing\n", xid);
 738                 spin_unlock_bh(&tgt->tgt_lock);
 739                 break;
 740
 741         case FCOE_WARNING_DETECTION_CQE_TYPE:
 742                 /*
 743                  *In case of warning reporting CQE a single RQ entry
 744                  * is consumes.
 745                  */
 746                 spin_lock_bh(&tgt->tgt_lock);
 747                 num_rq = 1;
 748                 err_entry = (struct fcoe_err_report_entry *)
 749                              bnx2fc_get_next_rqe(tgt, 1);
 750                 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
 751                 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
 752                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
 753                         err_entry->data.err_warn_bitmap_hi,
 754                         err_entry->data.err_warn_bitmap_lo);
 755                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
 756                         err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 757
 758                 bnx2fc_return_rqe(tgt, 1);
 759                 spin_unlock_bh(&tgt->tgt_lock);
 760                 break;
 761
 762         default:
 763                 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
 764                 break;
 765         }
 766 }
 767
 768 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
 769 {
 770         struct fcoe_task_ctx_entry *task;
 771         struct fcoe_task_ctx_entry *task_page;
 772         struct fcoe_port *port = tgt->port;
 773         struct bnx2fc_hba *hba = port->priv;
 774         struct bnx2fc_cmd *io_req;
 775         int task_idx, index;
 776         u16 xid;
 777         u8  cmd_type;
 778         u8 rx_state = 0;
 779         u8 num_rq;
 780
 781         spin_lock_bh(&tgt->tgt_lock);
 782         xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
 783         if (xid >= BNX2FC_MAX_TASKS) {
 784                 printk(KERN_ALERT PFX "ERROR:xid out of range\n");
 785                 spin_unlock_bh(&tgt->tgt_lock);
 786                 return;
 787         }
 788         task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 789         index = xid % BNX2FC_TASKS_PER_PAGE;
 790         task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
 791         task = &(task_page[index]);
 792
 793         num_rq = ((task->rxwr_txrd.var_ctx.rx_flags &
 794                    FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE) >>
 795                    FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE_SHIFT);
 796
 797         io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 798
 799         if (io_req == NULL) {
 800                 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
 801                 spin_unlock_bh(&tgt->tgt_lock);
 802                 return;
 803         }
 804
 805         /* Timestamp IO completion time */
 806         cmd_type = io_req->cmd_type;
 807
 808         rx_state = ((task->rxwr_txrd.var_ctx.rx_flags &
 809                     FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE) >>
 810                     FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE_SHIFT);
 811
 812         /* Process other IO completion types */
 813         switch (cmd_type) {
 814         case BNX2FC_SCSI_CMD:
 815                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
 816                         bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
 817                         spin_unlock_bh(&tgt->tgt_lock);
 818                         return;
 819                 }
 820
 821                 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 822                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 823                 else if (rx_state ==
 824                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 825                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 826                 else
 827                         printk(KERN_ERR PFX "Invalid rx state - %d\n",
 828                                 rx_state);
 829                 break;
 830
 831         case BNX2FC_TASK_MGMT_CMD:
 832                 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
 833                 bnx2fc_process_tm_compl(io_req, task, num_rq);
 834                 break;
 835
 836         case BNX2FC_ABTS:
 837                 /*
 838                  * ABTS request received by firmware. ABTS response
 839                  * will be delivered to the task belonging to the IO
 840                  * that was aborted
 841                  */
 842                 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
 843                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 844                 break;
 845
 846         case BNX2FC_ELS:
 847                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED)
 848                         bnx2fc_process_els_compl(io_req, task, num_rq);
 849                 else if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 850                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 851                 else if (rx_state ==
 852                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 853                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 854                 else
 855                         printk(KERN_ERR PFX "Invalid rx state =  %d\n",
 856                                 rx_state);
 857                 break;
 858
 859         case BNX2FC_CLEANUP:
 860                 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
 861                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 862                 break;
 863
 864         default:
 865                 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
 866                 break;
 867         }
 868         spin_unlock_bh(&tgt->tgt_lock);
 869 }
 870
 871 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt)
 872 {
 873         struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
 874         u32 msg;
 875
 876         wmb();
 877         rx_db->doorbell_cq_cons = tgt->cq_cons_idx | (tgt->cq_curr_toggle_bit <<
 878                         FCOE_CQE_TOGGLE_BIT_SHIFT);
 879         msg = *((u32 *)rx_db);
 880         writel(cpu_to_le32(msg), tgt->ctx_base);
 881         mmiowb();
 882
 883 }
 884
 885 struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
 886 {
 887         struct bnx2fc_work *work;
 888         work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
 889         if (!work)
 890                 return NULL;
 891
 892         INIT_LIST_HEAD(&work->list);
 893         work->tgt = tgt;
 894         work->wqe = wqe;
 895         return work;
 896 }
 897
 898 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
 899 {
 900         struct fcoe_cqe *cq;
 901         u32 cq_cons;
 902         struct fcoe_cqe *cqe;
 903         u32 num_free_sqes = 0;
 904         u16 wqe;
 905
 906         /*
 907          * cq_lock is a low contention lock used to protect
 908          * the CQ data structure from being freed up during
 909          * the upload operation
 910          */
 911         spin_lock_bh(&tgt->cq_lock);
 912
 913         if (!tgt->cq) {
 914                 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
 915                 spin_unlock_bh(&tgt->cq_lock);
 916                 return 0;
 917         }
 918         cq = tgt->cq;
 919         cq_cons = tgt->cq_cons_idx;
 920         cqe = &cq[cq_cons];
 921
 922         while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
 923                (tgt->cq_curr_toggle_bit <<
 924                FCOE_CQE_TOGGLE_BIT_SHIFT)) {
 925
 926                 /* new entry on the cq */
 927                 if (wqe & FCOE_CQE_CQE_TYPE) {
 928                         /* Unsolicited event notification */
 929                         bnx2fc_process_unsol_compl(tgt, wqe);
 930                 } else {
 931                         /* Pending work request completion */
 932                         struct bnx2fc_work *work = NULL;
 933                         struct bnx2fc_percpu_s *fps = NULL;
 934                         unsigned int cpu = wqe % num_possible_cpus();
 935
 936                         fps = &per_cpu(bnx2fc_percpu, cpu);
 937                         spin_lock_bh(&fps->fp_work_lock);
 938                         if (unlikely(!fps->iothread))
 939                                 goto unlock;
 940
 941                         work = bnx2fc_alloc_work(tgt, wqe);
 942                         if (work)
 943                                 list_add_tail(&work->list,
 944                                               &fps->work_list);
 945 unlock:
 946                         spin_unlock_bh(&fps->fp_work_lock);
 947
 948                         /* Pending work request completion */
 949                         if (fps->iothread && work)
 950                                 wake_up_process(fps->iothread);
 951                         else
 952                                 bnx2fc_process_cq_compl(tgt, wqe);
 953                 }
 954                 cqe++;
 955                 tgt->cq_cons_idx++;
 956                 num_free_sqes++;
 957
 958                 if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
 959                         tgt->cq_cons_idx = 0;
 960                         cqe = cq;
 961                         tgt->cq_curr_toggle_bit =
 962                                 1 - tgt->cq_curr_toggle_bit;
 963                 }
 964         }
 965         bnx2fc_arm_cq(tgt);
 966         atomic_add(num_free_sqes, &tgt->free_sqes);
 967         spin_unlock_bh(&tgt->cq_lock);
 968         return 0;
 969 }
 970
 971 /**
 972  * bnx2fc_fastpath_notification - process global event queue (KCQ)
 973  *
 974  * @hba:                adapter structure pointer
 975  * @new_cqe_kcqe:       pointer to newly DMA'd KCQ entry
 976  *
 977  * Fast path event notification handler
 978  */
 979 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
 980                                         struct fcoe_kcqe *new_cqe_kcqe)
 981 {
 982         u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
 983         struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
 984
 985         if (!tgt) {
 986                 printk(KERN_ALERT PFX "conn_id 0x%x not valid\n", conn_id);
 987                 return;
 988         }
 989
 990         bnx2fc_process_new_cqes(tgt);
 991 }
 992
 993 /**
 994  * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
 995  *
 996  * @hba:        adapter structure pointer
 997  * @ofld_kcqe:  connection offload kcqe pointer
 998  *
 999  * handle session offload completion, enable the session if offload is
1000  * successful.
1001  */
1002 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
1003                                         struct fcoe_kcqe *ofld_kcqe)
1004 {
1005         struct bnx2fc_rport             *tgt;
1006         struct fcoe_port                *port;
1007         u32                             conn_id;
1008         u32                             context_id;
1009         int                             rc;
1010
1011         conn_id = ofld_kcqe->fcoe_conn_id;
1012         context_id = ofld_kcqe->fcoe_conn_context_id;
1013         tgt = hba->tgt_ofld_list[conn_id];
1014         if (!tgt) {
1015                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
1016                 return;
1017         }
1018         BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
1019                 ofld_kcqe->fcoe_conn_context_id);
1020         port = tgt->port;
1021         if (hba != tgt->port->priv) {
1022                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: HBA mis-match\n");
1023                 goto ofld_cmpl_err;
1024         }
1025         /*
1026          * cnic has allocated a context_id for this session; use this
1027          * while enabling the session.
1028          */
1029         tgt->context_id = context_id;
1030         if (ofld_kcqe->completion_status) {
1031                 if (ofld_kcqe->completion_status ==
1032                                 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
1033                         printk(KERN_ERR PFX "unable to allocate FCoE context "
1034                                 "resources\n");
1035                         set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
1036                 }
1037                 goto ofld_cmpl_err;
1038         } else {
1039
1040                 /* now enable the session */
1041                 rc = bnx2fc_send_session_enable_req(port, tgt);
1042                 if (rc) {
1043                         printk(KERN_ALERT PFX "enable session failed\n");
1044                         goto ofld_cmpl_err;
1045                 }
1046         }
1047         return;
1048 ofld_cmpl_err:
1049         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1050         wake_up_interruptible(&tgt->ofld_wait);
1051 }
1052
1053 /**
1054  * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1055  *
1056  * @hba:        adapter structure pointer
1057  * @ofld_kcqe:  connection offload kcqe pointer
1058  *
1059  * handle session enable completion, mark the rport as ready
1060  */
1061
1062 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1063                                                 struct fcoe_kcqe *ofld_kcqe)
1064 {
1065         struct bnx2fc_rport             *tgt;
1066         u32                             conn_id;
1067         u32                             context_id;
1068
1069         context_id = ofld_kcqe->fcoe_conn_context_id;
1070         conn_id = ofld_kcqe->fcoe_conn_id;
1071         tgt = hba->tgt_ofld_list[conn_id];
1072         if (!tgt) {
1073                 printk(KERN_ALERT PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1074                 return;
1075         }
1076
1077         BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1078                 ofld_kcqe->fcoe_conn_context_id);
1079
1080         /*
1081          * context_id should be the same for this target during offload
1082          * and enable
1083          */
1084         if (tgt->context_id != context_id) {
1085                 printk(KERN_ALERT PFX "context id mis-match\n");
1086                 return;
1087         }
1088         if (hba != tgt->port->priv) {
1089                 printk(KERN_ALERT PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1090                 goto enbl_cmpl_err;
1091         }
1092         if (ofld_kcqe->completion_status) {
1093                 goto enbl_cmpl_err;
1094         } else {
1095                 /* enable successful - rport ready for issuing IOs */
1096                 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1097                 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1098                 wake_up_interruptible(&tgt->ofld_wait);
1099         }
1100         return;
1101
1102 enbl_cmpl_err:
1103         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1104         wake_up_interruptible(&tgt->ofld_wait);
1105 }
1106
1107 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1108                                         struct fcoe_kcqe *disable_kcqe)
1109 {
1110
1111         struct bnx2fc_rport             *tgt;
1112         u32                             conn_id;
1113
1114         conn_id = disable_kcqe->fcoe_conn_id;
1115         tgt = hba->tgt_ofld_list[conn_id];
1116         if (!tgt) {
1117                 printk(KERN_ALERT PFX "ERROR: disable_cmpl: No disable req\n");
1118                 return;
1119         }
1120
1121         BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1122
1123         if (disable_kcqe->completion_status) {
1124                 printk(KERN_ALERT PFX "ERROR: Disable failed with cmpl status %d\n",
1125                         disable_kcqe->completion_status);
1126                 return;
1127         } else {
1128                 /* disable successful */
1129                 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1130                 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1131                 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1132                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1133                 wake_up_interruptible(&tgt->upld_wait);
1134         }
1135 }
1136
1137 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1138                                         struct fcoe_kcqe *destroy_kcqe)
1139 {
1140         struct bnx2fc_rport             *tgt;
1141         u32                             conn_id;
1142
1143         conn_id = destroy_kcqe->fcoe_conn_id;
1144         tgt = hba->tgt_ofld_list[conn_id];
1145         if (!tgt) {
1146                 printk(KERN_ALERT PFX "destroy_cmpl: No destroy req\n");
1147                 return;
1148         }
1149
1150         BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1151
1152         if (destroy_kcqe->completion_status) {
1153                 printk(KERN_ALERT PFX "Destroy conn failed, cmpl status %d\n",
1154                         destroy_kcqe->completion_status);
1155                 return;
1156         } else {
1157                 /* destroy successful */
1158                 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1159                 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1160                 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1161                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1162                 wake_up_interruptible(&tgt->upld_wait);
1163         }
1164 }
1165
1166 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1167 {
1168         switch (err_code) {
1169         case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1170                 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1171                 break;
1172
1173         case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1174                 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1175                 break;
1176
1177         case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1178                 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1179                 break;
1180         case FCOE_KCQE_COMPLETION_STATUS_ERROR:
1181                 printk(KERN_ERR PFX "init failure due to compl status err\n");
1182                 break;
1183         case FCOE_KCQE_COMPLETION_STATUS_WRONG_HSI_VERSION:
1184                 printk(KERN_ERR PFX "init failure due to HSI mismatch\n");
1185         default:
1186                 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1187         }
1188 }
1189
1190 /**
1191  * bnx2fc_indicae_kcqe - process KCQE
1192  *
1193  * @hba:        adapter structure pointer
1194  * @kcqe:       kcqe pointer
1195  * @num_cqe:    Number of completion queue elements
1196  *
1197  * Generic KCQ event handler
1198  */
1199 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1200                                         u32 num_cqe)
1201 {
1202         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1203         int i = 0;
1204         struct fcoe_kcqe *kcqe = NULL;
1205
1206         while (i < num_cqe) {
1207                 kcqe = (struct fcoe_kcqe *) kcq[i++];
1208
1209                 switch (kcqe->op_code) {
1210                 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1211                         bnx2fc_fastpath_notification(hba, kcqe);
1212                         break;
1213
1214                 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1215                         bnx2fc_process_ofld_cmpl(hba, kcqe);
1216                         break;
1217
1218                 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1219                         bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1220                         break;
1221
1222                 case FCOE_KCQE_OPCODE_INIT_FUNC:
1223                         if (kcqe->completion_status !=
1224                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1225                                 bnx2fc_init_failure(hba,
1226                                                 kcqe->completion_status);
1227                         } else {
1228                                 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1229                                 bnx2fc_get_link_state(hba);
1230                                 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1231                                         (u8)hba->pcidev->bus->number);
1232                         }
1233                         break;
1234
1235                 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1236                         if (kcqe->completion_status !=
1237                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1238
1239                                 printk(KERN_ERR PFX "DESTROY failed\n");
1240                         } else {
1241                                 printk(KERN_ERR PFX "DESTROY success\n");
1242                         }
1243                         hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
1244                         wake_up_interruptible(&hba->destroy_wait);
1245                         break;
1246
1247                 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1248                         bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1249                         break;
1250
1251                 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1252                         bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1253                         break;
1254
1255                 case FCOE_KCQE_OPCODE_STAT_FUNC:
1256                         if (kcqe->completion_status !=
1257                             FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1258                                 printk(KERN_ERR PFX "STAT failed\n");
1259                         complete(&hba->stat_req_done);
1260                         break;
1261
1262                 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1263                         /* fall thru */
1264                 default:
1265                         printk(KERN_ALERT PFX "unknown opcode 0x%x\n",
1266                                                                 kcqe->op_code);
1267                 }
1268         }
1269 }
1270
1271 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1272 {
1273         struct fcoe_sqe *sqe;
1274
1275         sqe = &tgt->sq[tgt->sq_prod_idx];
1276
1277         /* Fill SQ WQE */
1278         sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1279         sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1280
1281         /* Advance SQ Prod Idx */
1282         if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1283                 tgt->sq_prod_idx = 0;
1284                 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1285         }
1286 }
1287
1288 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1289 {
1290         struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
1291         u32 msg;
1292
1293         wmb();
1294         sq_db->prod = tgt->sq_prod_idx |
1295                                 (tgt->sq_curr_toggle_bit << 15);
1296         msg = *((u32 *)sq_db);
1297         writel(cpu_to_le32(msg), tgt->ctx_base);
1298         mmiowb();
1299
1300 }
1301
1302 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1303 {
1304         u32 context_id = tgt->context_id;
1305         struct fcoe_port *port = tgt->port;
1306         u32 reg_off;
1307         resource_size_t reg_base;
1308         struct bnx2fc_hba *hba = port->priv;
1309
1310         reg_base = pci_resource_start(hba->pcidev,
1311                                         BNX2X_DOORBELL_PCI_BAR);
1312         reg_off = BNX2FC_5771X_DB_PAGE_SIZE *
1313                         (context_id & 0x1FFFF) + DPM_TRIGER_TYPE;
1314         tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
1315         if (!tgt->ctx_base)
1316                 return -ENOMEM;
1317         return 0;
1318 }
1319
1320 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1321 {
1322         char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1323
1324         if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1325                 return NULL;
1326
1327         tgt->rq_cons_idx += num_items;
1328
1329         if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1330                 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1331
1332         return buf;
1333 }
1334
1335 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1336 {
1337         /* return the rq buffer */
1338         u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1339         if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1340                 /* Wrap around RQ */
1341                 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1342         }
1343         tgt->rq_prod_idx = next_prod_idx;
1344         tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1345 }
1346
1347 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1348                               struct fcoe_task_ctx_entry *task,
1349                               u16 orig_xid)
1350 {
1351         u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1352         struct bnx2fc_rport *tgt = io_req->tgt;
1353         u32 context_id = tgt->context_id;
1354
1355         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1356
1357         /* Tx Write Rx Read */
1358         /* init flags */
1359         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1360                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1361         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1362                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1363         task->txwr_rxrd.const_ctx.init_flags |=
1364                                 FCOE_TASK_DEV_TYPE_DISK <<
1365                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1366         task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1367
1368         /* Tx flags */
1369         task->txwr_rxrd.const_ctx.tx_flags =
1370                                 FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1371                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1372
1373         /* Rx Read Tx Write */
1374         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1375                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1376         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1377                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1378 }
1379
1380 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1381                                 struct fcoe_task_ctx_entry *task)
1382 {
1383         struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1384         struct bnx2fc_rport *tgt = io_req->tgt;
1385         struct fc_frame_header *fc_hdr;
1386         struct fcoe_ext_mul_sges_ctx *sgl;
1387         u8 task_type = 0;
1388         u64 *hdr;
1389         u64 temp_hdr[3];
1390         u32 context_id;
1391
1392
1393         /* Obtain task_type */
1394         if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1395             (io_req->cmd_type == BNX2FC_ELS)) {
1396                 task_type = FCOE_TASK_TYPE_MIDPATH;
1397         } else if (io_req->cmd_type == BNX2FC_ABTS) {
1398                 task_type = FCOE_TASK_TYPE_ABTS;
1399         }
1400
1401         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1402
1403         /* Setup the task from io_req for easy reference */
1404         io_req->task = task;
1405
1406         BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1407                 io_req->cmd_type, task_type);
1408
1409         /* Tx only */
1410         if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1411             (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1412                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1413                                 (u32)mp_req->mp_req_bd_dma;
1414                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1415                                 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1416                 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size = 1;
1417         }
1418
1419         /* Tx Write Rx Read */
1420         /* init flags */
1421         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1422                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1423         task->txwr_rxrd.const_ctx.init_flags |=
1424                                 FCOE_TASK_DEV_TYPE_DISK <<
1425                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1426         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1427                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1428
1429         /* tx flags */
1430         task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1431                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1432
1433         /* Rx Write Tx Read */
1434         task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1435
1436         /* rx flags */
1437         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1438                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1439
1440         context_id = tgt->context_id;
1441         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1442                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1443
1444         fc_hdr = &(mp_req->req_fc_hdr);
1445         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1446                 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1447                 fc_hdr->fh_rx_id = htons(0xffff);
1448                 task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1449         } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1450                 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1451         }
1452
1453         /* Fill FC Header into middle path buffer */
1454         hdr = (u64 *) &task->txwr_rxrd.union_ctx.tx_frame.fc_hdr;
1455         memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1456         hdr[0] = cpu_to_be64(temp_hdr[0]);
1457         hdr[1] = cpu_to_be64(temp_hdr[1]);
1458         hdr[2] = cpu_to_be64(temp_hdr[2]);
1459
1460         /* Rx Only */
1461         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1462                 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1463
1464                 sgl->mul_sgl.cur_sge_addr.lo = (u32)mp_req->mp_resp_bd_dma;
1465                 sgl->mul_sgl.cur_sge_addr.hi =
1466                                 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1467                 sgl->mul_sgl.sgl_size = 1;
1468         }
1469 }
1470
1471 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1472                              struct fcoe_task_ctx_entry *task)
1473 {
1474         u8 task_type;
1475         struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1476         struct io_bdt *bd_tbl = io_req->bd_tbl;
1477         struct bnx2fc_rport *tgt = io_req->tgt;
1478         struct fcoe_cached_sge_ctx *cached_sge;
1479         struct fcoe_ext_mul_sges_ctx *sgl;
1480         u64 *fcp_cmnd;
1481         u64 tmp_fcp_cmnd[4];
1482         u32 context_id;
1483         int cnt, i;
1484         int bd_count;
1485
1486         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1487
1488         /* Setup the task from io_req for easy reference */
1489         io_req->task = task;
1490
1491         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1492                 task_type = FCOE_TASK_TYPE_WRITE;
1493         else
1494                 task_type = FCOE_TASK_TYPE_READ;
1495
1496         /* Tx only */
1497         if (task_type == FCOE_TASK_TYPE_WRITE) {
1498                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1499                                 (u32)bd_tbl->bd_tbl_dma;
1500                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1501                                 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1502                 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1503                                 bd_tbl->bd_valid;
1504         }
1505
1506         /*Tx Write Rx Read */
1507         /* Init state to NORMAL */
1508         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1509                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1510         task->txwr_rxrd.const_ctx.init_flags |=
1511                                 FCOE_TASK_DEV_TYPE_DISK <<
1512                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1513         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1514                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1515         /* tx flags */
1516         task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1517                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1518
1519         /* Set initial seq counter */
1520         task->txwr_rxrd.union_ctx.tx_seq.ctx.seq_cnt = 1;
1521
1522         /* Fill FCP_CMND IU */
1523         fcp_cmnd = (u64 *)
1524                     task->txwr_rxrd.union_ctx.fcp_cmd.opaque;
1525         bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1526
1527         /* swap fcp_cmnd */
1528         cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1529
1530         for (i = 0; i < cnt; i++) {
1531                 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1532                 fcp_cmnd++;
1533         }
1534
1535         /* Rx Write Tx Read */
1536         task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1537
1538         context_id = tgt->context_id;
1539         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1540                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1541
1542         /* rx flags */
1543         /* Set state to "waiting for the first packet" */
1544         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1545                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1546
1547         task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1548
1549         /* Rx Only */
1550         cached_sge = &task->rxwr_only.union_ctx.read_info.sgl_ctx.cached_sge;
1551         sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1552         bd_count = bd_tbl->bd_valid;
1553         if (task_type == FCOE_TASK_TYPE_READ) {
1554                 if (bd_count == 1) {
1555
1556                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1557
1558                         cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1559                         cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1560                         cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1561                         task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1562                                 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1563                 } else if (bd_count == 2) {
1564                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1565
1566                         cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1567                         cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1568                         cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1569
1570                         fcoe_bd_tbl++;
1571                         cached_sge->second_buf_addr.lo =
1572                                                  fcoe_bd_tbl->buf_addr_lo;
1573                         cached_sge->second_buf_addr.hi =
1574                                                 fcoe_bd_tbl->buf_addr_hi;
1575                         cached_sge->second_buf_rem = fcoe_bd_tbl->buf_len;
1576                         task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1577                                 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1578                 } else {
1579
1580                         sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1581                         sgl->mul_sgl.cur_sge_addr.hi =
1582                                         (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1583                         sgl->mul_sgl.sgl_size = bd_count;
1584                 }
1585         }
1586 }
1587
1588 /**
1589  * bnx2fc_setup_task_ctx - allocate and map task context
1590  *
1591  * @hba:        pointer to adapter structure
1592  *
1593  * allocate memory for task context, and associated BD table to be used
1594  * by firmware
1595  *
1596  */
1597 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1598 {
1599         int rc = 0;
1600         struct regpair *task_ctx_bdt;
1601         dma_addr_t addr;
1602         int i;
1603
1604         /*
1605          * Allocate task context bd table. A page size of bd table
1606          * can map 256 buffers. Each buffer contains 32 task context
1607          * entries. Hence the limit with one page is 8192 task context
1608          * entries.
1609          */
1610         hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1611                                                   PAGE_SIZE,
1612                                                   &hba->task_ctx_bd_dma,
1613                                                   GFP_KERNEL);
1614         if (!hba->task_ctx_bd_tbl) {
1615                 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1616                 rc = -1;
1617                 goto out;
1618         }
1619         memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
1620
1621         /*
1622          * Allocate task_ctx which is an array of pointers pointing to
1623          * a page containing 32 task contexts
1624          */
1625         hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
1626                                  GFP_KERNEL);
1627         if (!hba->task_ctx) {
1628                 printk(KERN_ERR PFX "unable to allocate task context array\n");
1629                 rc = -1;
1630                 goto out1;
1631         }
1632
1633         /*
1634          * Allocate task_ctx_dma which is an array of dma addresses
1635          */
1636         hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
1637                                         sizeof(dma_addr_t)), GFP_KERNEL);
1638         if (!hba->task_ctx_dma) {
1639                 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1640                 rc = -1;
1641                 goto out2;
1642         }
1643
1644         task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1645         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1646
1647                 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1648                                                       PAGE_SIZE,
1649                                                       &hba->task_ctx_dma[i],
1650                                                       GFP_KERNEL);
1651                 if (!hba->task_ctx[i]) {
1652                         printk(KERN_ERR PFX "unable to alloc task context\n");
1653                         rc = -1;
1654                         goto out3;
1655                 }
1656                 memset(hba->task_ctx[i], 0, PAGE_SIZE);
1657                 addr = (u64)hba->task_ctx_dma[i];
1658                 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1659                 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1660                 task_ctx_bdt++;
1661         }
1662         return 0;
1663
1664 out3:
1665         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1666                 if (hba->task_ctx[i]) {
1667
1668                         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1669                                 hba->task_ctx[i], hba->task_ctx_dma[i]);
1670                         hba->task_ctx[i] = NULL;
1671                 }
1672         }
1673
1674         kfree(hba->task_ctx_dma);
1675         hba->task_ctx_dma = NULL;
1676 out2:
1677         kfree(hba->task_ctx);
1678         hba->task_ctx = NULL;
1679 out1:
1680         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1681                         hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1682         hba->task_ctx_bd_tbl = NULL;
1683 out:
1684         return rc;
1685 }
1686
1687 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1688 {
1689         int i;
1690
1691         if (hba->task_ctx_bd_tbl) {
1692                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1693                                     hba->task_ctx_bd_tbl,
1694                                     hba->task_ctx_bd_dma);
1695                 hba->task_ctx_bd_tbl = NULL;
1696         }
1697
1698         if (hba->task_ctx) {
1699                 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1700                         if (hba->task_ctx[i]) {
1701                                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1702                                                     hba->task_ctx[i],
1703                                                     hba->task_ctx_dma[i]);
1704                                 hba->task_ctx[i] = NULL;
1705                         }
1706                 }
1707                 kfree(hba->task_ctx);
1708                 hba->task_ctx = NULL;
1709         }
1710
1711         kfree(hba->task_ctx_dma);
1712         hba->task_ctx_dma = NULL;
1713 }
1714
1715 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1716 {
1717         int i;
1718         int segment_count;
1719         int hash_table_size;
1720         u32 *pbl;
1721
1722         segment_count = hba->hash_tbl_segment_count;
1723         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1724                 sizeof(struct fcoe_hash_table_entry);
1725
1726         pbl = hba->hash_tbl_pbl;
1727         for (i = 0; i < segment_count; ++i) {
1728                 dma_addr_t dma_address;
1729
1730                 dma_address = le32_to_cpu(*pbl);
1731                 ++pbl;
1732                 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
1733                 ++pbl;
1734                 dma_free_coherent(&hba->pcidev->dev,
1735                                   BNX2FC_HASH_TBL_CHUNK_SIZE,
1736                                   hba->hash_tbl_segments[i],
1737                                   dma_address);
1738
1739         }
1740
1741         if (hba->hash_tbl_pbl) {
1742                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1743                                     hba->hash_tbl_pbl,
1744                                     hba->hash_tbl_pbl_dma);
1745                 hba->hash_tbl_pbl = NULL;
1746         }
1747 }
1748
1749 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
1750 {
1751         int i;
1752         int hash_table_size;
1753         int segment_count;
1754         int segment_array_size;
1755         int dma_segment_array_size;
1756         dma_addr_t *dma_segment_array;
1757         u32 *pbl;
1758
1759         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1760                 sizeof(struct fcoe_hash_table_entry);
1761
1762         segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
1763         segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
1764         hba->hash_tbl_segment_count = segment_count;
1765
1766         segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
1767         hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
1768         if (!hba->hash_tbl_segments) {
1769                 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
1770                 return -ENOMEM;
1771         }
1772         dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
1773         dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
1774         if (!dma_segment_array) {
1775                 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
1776                 return -ENOMEM;
1777         }
1778
1779         for (i = 0; i < segment_count; ++i) {
1780                 hba->hash_tbl_segments[i] =
1781                         dma_alloc_coherent(&hba->pcidev->dev,
1782                                            BNX2FC_HASH_TBL_CHUNK_SIZE,
1783                                            &dma_segment_array[i],
1784                                            GFP_KERNEL);
1785                 if (!hba->hash_tbl_segments[i]) {
1786                         printk(KERN_ERR PFX "hash segment alloc failed\n");
1787                         while (--i >= 0) {
1788                                 dma_free_coherent(&hba->pcidev->dev,
1789                                                     BNX2FC_HASH_TBL_CHUNK_SIZE,
1790                                                     hba->hash_tbl_segments[i],
1791                                                     dma_segment_array[i]);
1792                                 hba->hash_tbl_segments[i] = NULL;
1793                         }
1794                         kfree(dma_segment_array);
1795                         return -ENOMEM;
1796                 }
1797                 memset(hba->hash_tbl_segments[i], 0,
1798                        BNX2FC_HASH_TBL_CHUNK_SIZE);
1799         }
1800
1801         hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
1802                                                PAGE_SIZE,
1803                                                &hba->hash_tbl_pbl_dma,
1804                                                GFP_KERNEL);
1805         if (!hba->hash_tbl_pbl) {
1806                 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
1807                 kfree(dma_segment_array);
1808                 return -ENOMEM;
1809         }
1810         memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
1811
1812         pbl = hba->hash_tbl_pbl;
1813         for (i = 0; i < segment_count; ++i) {
1814                 u64 paddr = dma_segment_array[i];
1815                 *pbl = cpu_to_le32((u32) paddr);
1816                 ++pbl;
1817                 *pbl = cpu_to_le32((u32) (paddr >> 32));
1818                 ++pbl;
1819         }
1820         pbl = hba->hash_tbl_pbl;
1821         i = 0;
1822         while (*pbl && *(pbl + 1)) {
1823                 u32 lo;
1824                 u32 hi;
1825                 lo = *pbl;
1826                 ++pbl;
1827                 hi = *pbl;
1828                 ++pbl;
1829                 ++i;
1830         }
1831         kfree(dma_segment_array);
1832         return 0;
1833 }
1834
1835 /**
1836  * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
1837  *
1838  * @hba:        Pointer to adapter structure
1839  *
1840  */
1841 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
1842 {
1843         u64 addr;
1844         u32 mem_size;
1845         int i;
1846
1847         if (bnx2fc_allocate_hash_table(hba))
1848                 return -ENOMEM;
1849
1850         mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1851         hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1852                                                   &hba->t2_hash_tbl_ptr_dma,
1853                                                   GFP_KERNEL);
1854         if (!hba->t2_hash_tbl_ptr) {
1855                 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
1856                 bnx2fc_free_fw_resc(hba);
1857                 return -ENOMEM;
1858         }
1859         memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
1860
1861         mem_size = BNX2FC_NUM_MAX_SESS *
1862                                 sizeof(struct fcoe_t2_hash_table_entry);
1863         hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1864                                               &hba->t2_hash_tbl_dma,
1865                                               GFP_KERNEL);
1866         if (!hba->t2_hash_tbl) {
1867                 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
1868                 bnx2fc_free_fw_resc(hba);
1869                 return -ENOMEM;
1870         }
1871         memset(hba->t2_hash_tbl, 0x00, mem_size);
1872         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
1873                 addr = (unsigned long) hba->t2_hash_tbl_dma +
1874                          ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
1875                 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
1876                 hba->t2_hash_tbl[i].next.hi = addr >> 32;
1877         }
1878
1879         hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1880                                                PAGE_SIZE, &hba->dummy_buf_dma,
1881                                                GFP_KERNEL);
1882         if (!hba->dummy_buffer) {
1883                 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
1884                 bnx2fc_free_fw_resc(hba);
1885                 return -ENOMEM;
1886         }
1887
1888         hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1889                                                PAGE_SIZE,
1890                                                &hba->stats_buf_dma,
1891                                                GFP_KERNEL);
1892         if (!hba->stats_buffer) {
1893                 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
1894                 bnx2fc_free_fw_resc(hba);
1895                 return -ENOMEM;
1896         }
1897         memset(hba->stats_buffer, 0x00, PAGE_SIZE);
1898
1899         return 0;
1900 }
1901
1902 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
1903 {
1904         u32 mem_size;
1905
1906         if (hba->stats_buffer) {
1907                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1908                                   hba->stats_buffer, hba->stats_buf_dma);
1909                 hba->stats_buffer = NULL;
1910         }
1911
1912         if (hba->dummy_buffer) {
1913                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1914                                   hba->dummy_buffer, hba->dummy_buf_dma);
1915                 hba->dummy_buffer = NULL;
1916         }
1917
1918         if (hba->t2_hash_tbl_ptr) {
1919                 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1920                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1921                                     hba->t2_hash_tbl_ptr,
1922                                     hba->t2_hash_tbl_ptr_dma);
1923                 hba->t2_hash_tbl_ptr = NULL;
1924         }
1925
1926         if (hba->t2_hash_tbl) {
1927                 mem_size = BNX2FC_NUM_MAX_SESS *
1928                             sizeof(struct fcoe_t2_hash_table_entry);
1929                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1930                                     hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
1931                 hba->t2_hash_tbl = NULL;
1932         }
1933         bnx2fc_free_hash_table(hba);
1934 }