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                 kfree(unsol_els);
 526                 return;
 527         }
 528
 529         fh = (struct fc_frame_header *) fc_frame_header_get(fp);
 530         /* Copy FC Frame header and payload into the frame */
 531         memcpy(fh, buf, frame_len);
 532
 533         if (l2_oxid != FC_XID_UNKNOWN)
 534                 fh->fh_ox_id = htons(l2_oxid);
 535
 536         skb = fp_skb(fp);
 537
 538         if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
 539             (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
 540
 541                 if (fh->fh_type == FC_TYPE_ELS) {
 542                         op = fc_frame_payload_op(fp);
 543                         if ((op == ELS_TEST) || (op == ELS_ESTC) ||
 544                             (op == ELS_FAN) || (op == ELS_CSU)) {
 545                                 /*
 546                                  * No need to reply for these
 547                                  * ELS requests
 548                                  */
 549                                 printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
 550                                 kfree_skb(skb);
 551                                 kfree(unsol_els);
 552                                 return;
 553                         }
 554                 }
 555                 crc = fcoe_fc_crc(fp);
 556                 fc_frame_init(fp);
 557                 fr_dev(fp) = lport;
 558                 fr_sof(fp) = FC_SOF_I3;
 559                 fr_eof(fp) = FC_EOF_T;
 560                 fr_crc(fp) = cpu_to_le32(~crc);
 561                 unsol_els->lport = lport;
 562                 unsol_els->fp = fp;
 563                 INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
 564                 queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
 565         } else {
 566                 BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
 567                 kfree_skb(skb);
 568                 kfree(unsol_els);
 569         }
 570 }
 571
 572 static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
 573 {
 574         u8 num_rq;
 575         struct fcoe_err_report_entry *err_entry;
 576         unsigned char *rq_data;
 577         unsigned char *buf = NULL, *buf1;
 578         int i;
 579         u16 xid;
 580         u32 frame_len, len;
 581         struct bnx2fc_cmd *io_req = NULL;
 582         struct fcoe_task_ctx_entry *task, *task_page;
 583         struct bnx2fc_hba *hba = tgt->port->priv;
 584         int task_idx, index;
 585         int rc = 0;
 586
 587
 588         BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
 589         switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
 590         case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
 591                 frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
 592                              FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
 593
 594                 num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
 595
 596                 spin_lock_bh(&tgt->tgt_lock);
 597                 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
 598                 spin_unlock_bh(&tgt->tgt_lock);
 599
 600                 if (rq_data) {
 601                         buf = rq_data;
 602                 } else {
 603                         buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
 604                                               GFP_ATOMIC);
 605
 606                         if (!buf1) {
 607                                 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
 608                                 break;
 609                         }
 610
 611                         for (i = 0; i < num_rq; i++) {
 612                                 spin_lock_bh(&tgt->tgt_lock);
 613                                 rq_data = (unsigned char *)
 614                                            bnx2fc_get_next_rqe(tgt, 1);
 615                                 spin_unlock_bh(&tgt->tgt_lock);
 616                                 len = BNX2FC_RQ_BUF_SZ;
 617                                 memcpy(buf1, rq_data, len);
 618                                 buf1 += len;
 619                         }
 620                 }
 621                 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
 622                                               FC_XID_UNKNOWN);
 623
 624                 if (buf != rq_data)
 625                         kfree(buf);
 626                 spin_lock_bh(&tgt->tgt_lock);
 627                 bnx2fc_return_rqe(tgt, num_rq);
 628                 spin_unlock_bh(&tgt->tgt_lock);
 629                 break;
 630
 631         case FCOE_ERROR_DETECTION_CQE_TYPE:
 632                 /*
 633                  * In case of error reporting CQE a single RQ entry
 634                  * is consumed.
 635                  */
 636                 spin_lock_bh(&tgt->tgt_lock);
 637                 num_rq = 1;
 638                 err_entry = (struct fcoe_err_report_entry *)
 639                              bnx2fc_get_next_rqe(tgt, 1);
 640                 xid = err_entry->fc_hdr.ox_id;
 641                 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
 642                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
 643                         err_entry->err_warn_bitmap_hi,
 644                         err_entry->err_warn_bitmap_lo);
 645                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
 646                         err_entry->tx_buf_off, err_entry->rx_buf_off);
 647
 648                 bnx2fc_return_rqe(tgt, 1);
 649
 650                 if (xid > BNX2FC_MAX_XID) {
 651                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
 652                                    xid);
 653                         spin_unlock_bh(&tgt->tgt_lock);
 654                         break;
 655                 }
 656
 657                 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 658                 index = xid % BNX2FC_TASKS_PER_PAGE;
 659                 task_page = (struct fcoe_task_ctx_entry *)
 660                                                 hba->task_ctx[task_idx];
 661                 task = &(task_page[index]);
 662
 663                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 664                 if (!io_req) {
 665                         spin_unlock_bh(&tgt->tgt_lock);
 666                         break;
 667                 }
 668
 669                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 670                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 671                         spin_unlock_bh(&tgt->tgt_lock);
 672                         break;
 673                 }
 674
 675                 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
 676                                        &io_req->req_flags)) {
 677                         BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
 678                                             "progress.. ignore unsol err\n");
 679                         spin_unlock_bh(&tgt->tgt_lock);
 680                         break;
 681                 }
 682
 683                 /*
 684                  * If ABTS is already in progress, and FW error is
 685                  * received after that, do not cancel the timeout_work
 686                  * and let the error recovery continue by explicitly
 687                  * logging out the target, when the ABTS eventually
 688                  * times out.
 689                  */
 690                 if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
 691                                       &io_req->req_flags)) {
 692                         /*
 693                          * Cancel the timeout_work, as we received IO
 694                          * completion with FW error.
 695                          */
 696                         if (cancel_delayed_work(&io_req->timeout_work))
 697                                 kref_put(&io_req->refcount,
 698                                          bnx2fc_cmd_release); /* timer hold */
 699
 700                         rc = bnx2fc_initiate_abts(io_req);
 701                         if (rc != SUCCESS) {
 702                                 BNX2FC_IO_DBG(io_req, "err_warn: initiate_abts "
 703                                         "failed. issue cleanup\n");
 704                                 rc = bnx2fc_initiate_cleanup(io_req);
 705                                 BUG_ON(rc);
 706                         }
 707                 } else
 708                         printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
 709                                             "in ABTS processing\n", xid);
 710                 spin_unlock_bh(&tgt->tgt_lock);
 711                 break;
 712
 713         case FCOE_WARNING_DETECTION_CQE_TYPE:
 714                 /*
 715                  *In case of warning reporting CQE a single RQ entry
 716                  * is consumes.
 717                  */
 718                 spin_lock_bh(&tgt->tgt_lock);
 719                 num_rq = 1;
 720                 err_entry = (struct fcoe_err_report_entry *)
 721                              bnx2fc_get_next_rqe(tgt, 1);
 722                 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
 723                 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
 724                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
 725                         err_entry->err_warn_bitmap_hi,
 726                         err_entry->err_warn_bitmap_lo);
 727                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
 728                         err_entry->tx_buf_off, err_entry->rx_buf_off);
 729
 730                 bnx2fc_return_rqe(tgt, 1);
 731                 spin_unlock_bh(&tgt->tgt_lock);
 732                 break;
 733
 734         default:
 735                 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
 736                 break;
 737         }
 738 }
 739
 740 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
 741 {
 742         struct fcoe_task_ctx_entry *task;
 743         struct fcoe_task_ctx_entry *task_page;
 744         struct fcoe_port *port = tgt->port;
 745         struct bnx2fc_hba *hba = port->priv;
 746         struct bnx2fc_cmd *io_req;
 747         int task_idx, index;
 748         u16 xid;
 749         u8  cmd_type;
 750         u8 rx_state = 0;
 751         u8 num_rq;
 752
 753         spin_lock_bh(&tgt->tgt_lock);
 754         xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
 755         if (xid >= BNX2FC_MAX_TASKS) {
 756                 printk(KERN_ALERT PFX "ERROR:xid out of range\n");
 757                 spin_unlock_bh(&tgt->tgt_lock);
 758                 return;
 759         }
 760         task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 761         index = xid % BNX2FC_TASKS_PER_PAGE;
 762         task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
 763         task = &(task_page[index]);
 764
 765         num_rq = ((task->rx_wr_tx_rd.rx_flags &
 766                    FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE) >>
 767                    FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE_SHIFT);
 768
 769         io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 770
 771         if (io_req == NULL) {
 772                 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
 773                 spin_unlock_bh(&tgt->tgt_lock);
 774                 return;
 775         }
 776
 777         /* Timestamp IO completion time */
 778         cmd_type = io_req->cmd_type;
 779
 780         /* optimized completion path */
 781         if (cmd_type == BNX2FC_SCSI_CMD) {
 782                 rx_state = ((task->rx_wr_tx_rd.rx_flags &
 783                             FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE) >>
 784                             FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE_SHIFT);
 785
 786                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
 787                         bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
 788                         spin_unlock_bh(&tgt->tgt_lock);
 789                         return;
 790                 }
 791         }
 792
 793         /* Process other IO completion types */
 794         switch (cmd_type) {
 795         case BNX2FC_SCSI_CMD:
 796                 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 797                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 798                 else if (rx_state ==
 799                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 800                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 801                 else
 802                         printk(KERN_ERR PFX "Invalid rx state - %d\n",
 803                                 rx_state);
 804                 break;
 805
 806         case BNX2FC_TASK_MGMT_CMD:
 807                 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
 808                 bnx2fc_process_tm_compl(io_req, task, num_rq);
 809                 break;
 810
 811         case BNX2FC_ABTS:
 812                 /*
 813                  * ABTS request received by firmware. ABTS response
 814                  * will be delivered to the task belonging to the IO
 815                  * that was aborted
 816                  */
 817                 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
 818                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 819                 break;
 820
 821         case BNX2FC_ELS:
 822                 BNX2FC_IO_DBG(io_req, "cq_compl - call process_els_compl\n");
 823                 bnx2fc_process_els_compl(io_req, task, num_rq);
 824                 break;
 825
 826         case BNX2FC_CLEANUP:
 827                 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
 828                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 829                 break;
 830
 831         default:
 832                 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
 833                 break;
 834         }
 835         spin_unlock_bh(&tgt->tgt_lock);
 836 }
 837
 838 struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
 839 {
 840         struct bnx2fc_work *work;
 841         work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
 842         if (!work)
 843                 return NULL;
 844
 845         INIT_LIST_HEAD(&work->list);
 846         work->tgt = tgt;
 847         work->wqe = wqe;
 848         return work;
 849 }
 850
 851 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
 852 {
 853         struct fcoe_cqe *cq;
 854         u32 cq_cons;
 855         struct fcoe_cqe *cqe;
 856         u16 wqe;
 857         bool more_cqes_found = false;
 858
 859         /*
 860          * cq_lock is a low contention lock used to protect
 861          * the CQ data structure from being freed up during
 862          * the upload operation
 863          */
 864         spin_lock_bh(&tgt->cq_lock);
 865
 866         if (!tgt->cq) {
 867                 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
 868                 spin_unlock_bh(&tgt->cq_lock);
 869                 return 0;
 870         }
 871         cq = tgt->cq;
 872         cq_cons = tgt->cq_cons_idx;
 873         cqe = &cq[cq_cons];
 874
 875         do {
 876                 more_cqes_found ^= true;
 877
 878                 while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
 879                        (tgt->cq_curr_toggle_bit <<
 880                        FCOE_CQE_TOGGLE_BIT_SHIFT)) {
 881
 882                         /* new entry on the cq */
 883                         if (wqe & FCOE_CQE_CQE_TYPE) {
 884                                 /* Unsolicited event notification */
 885                                 bnx2fc_process_unsol_compl(tgt, wqe);
 886                         } else {
 887                                 struct bnx2fc_work *work = NULL;
 888                                 struct bnx2fc_percpu_s *fps = NULL;
 889                                 unsigned int cpu = wqe % num_possible_cpus();
 890
 891                                 fps = &per_cpu(bnx2fc_percpu, cpu);
 892                                 spin_lock_bh(&fps->fp_work_lock);
 893                                 if (unlikely(!fps->iothread))
 894                                         goto unlock;
 895
 896                                 work = bnx2fc_alloc_work(tgt, wqe);
 897                                 if (work)
 898                                         list_add_tail(&work->list,
 899                                                         &fps->work_list);
 900 unlock:
 901                                 spin_unlock_bh(&fps->fp_work_lock);
 902
 903                                 /* Pending work request completion */
 904                                 if (fps->iothread && work)
 905                                         wake_up_process(fps->iothread);
 906                                 else
 907                                         bnx2fc_process_cq_compl(tgt, wqe);
 908                         }
 909                         cqe++;
 910                         tgt->cq_cons_idx++;
 911
 912                         if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
 913                                 tgt->cq_cons_idx = 0;
 914                                 cqe = cq;
 915                                 tgt->cq_curr_toggle_bit =
 916                                         1 - tgt->cq_curr_toggle_bit;
 917                         }
 918                 }
 919                 /* Re-arm CQ */
 920                 if (more_cqes_found) {
 921                         tgt->conn_db->cq_arm.lo = -1;
 922                         wmb();
 923                 }
 924         } while (more_cqes_found);
 925
 926         /*
 927          * Commit tgt->cq_cons_idx change to the memory
 928          * spin_lock implies full memory barrier, no need to smp_wmb
 929          */
 930
 931         spin_unlock_bh(&tgt->cq_lock);
 932         return 0;
 933 }
 934
 935 /**
 936  * bnx2fc_fastpath_notification - process global event queue (KCQ)
 937  *
 938  * @hba:                adapter structure pointer
 939  * @new_cqe_kcqe:       pointer to newly DMA'd KCQ entry
 940  *
 941  * Fast path event notification handler
 942  */
 943 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
 944                                         struct fcoe_kcqe *new_cqe_kcqe)
 945 {
 946         u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
 947         struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
 948
 949         if (!tgt) {
 950                 printk(KERN_ALERT PFX "conn_id 0x%x not valid\n", conn_id);
 951                 return;
 952         }
 953
 954         bnx2fc_process_new_cqes(tgt);
 955 }
 956
 957 /**
 958  * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
 959  *
 960  * @hba:        adapter structure pointer
 961  * @ofld_kcqe:  connection offload kcqe pointer
 962  *
 963  * handle session offload completion, enable the session if offload is
 964  * successful.
 965  */
 966 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
 967                                         struct fcoe_kcqe *ofld_kcqe)
 968 {
 969         struct bnx2fc_rport             *tgt;
 970         struct fcoe_port                *port;
 971         u32                             conn_id;
 972         u32                             context_id;
 973         int                             rc;
 974
 975         conn_id = ofld_kcqe->fcoe_conn_id;
 976         context_id = ofld_kcqe->fcoe_conn_context_id;
 977         tgt = hba->tgt_ofld_list[conn_id];
 978         if (!tgt) {
 979                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
 980                 return;
 981         }
 982         BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
 983                 ofld_kcqe->fcoe_conn_context_id);
 984         port = tgt->port;
 985         if (hba != tgt->port->priv) {
 986                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: HBA mis-match\n");
 987                 goto ofld_cmpl_err;
 988         }
 989         /*
 990          * cnic has allocated a context_id for this session; use this
 991          * while enabling the session.
 992          */
 993         tgt->context_id = context_id;
 994         if (ofld_kcqe->completion_status) {
 995                 if (ofld_kcqe->completion_status ==
 996                                 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
 997                         printk(KERN_ERR PFX "unable to allocate FCoE context "
 998                                 "resources\n");
 999                         set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
1000                 }
1001                 goto ofld_cmpl_err;
1002         } else {
1003
1004                 /* now enable the session */
1005                 rc = bnx2fc_send_session_enable_req(port, tgt);
1006                 if (rc) {
1007                         printk(KERN_ALERT PFX "enable session failed\n");
1008                         goto ofld_cmpl_err;
1009                 }
1010         }
1011         return;
1012 ofld_cmpl_err:
1013         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1014         wake_up_interruptible(&tgt->ofld_wait);
1015 }
1016
1017 /**
1018  * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1019  *
1020  * @hba:        adapter structure pointer
1021  * @ofld_kcqe:  connection offload kcqe pointer
1022  *
1023  * handle session enable completion, mark the rport as ready
1024  */
1025
1026 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1027                                                 struct fcoe_kcqe *ofld_kcqe)
1028 {
1029         struct bnx2fc_rport             *tgt;
1030         u32                             conn_id;
1031         u32                             context_id;
1032
1033         context_id = ofld_kcqe->fcoe_conn_context_id;
1034         conn_id = ofld_kcqe->fcoe_conn_id;
1035         tgt = hba->tgt_ofld_list[conn_id];
1036         if (!tgt) {
1037                 printk(KERN_ALERT PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1038                 return;
1039         }
1040
1041         BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1042                 ofld_kcqe->fcoe_conn_context_id);
1043
1044         /*
1045          * context_id should be the same for this target during offload
1046          * and enable
1047          */
1048         if (tgt->context_id != context_id) {
1049                 printk(KERN_ALERT PFX "context id mis-match\n");
1050                 return;
1051         }
1052         if (hba != tgt->port->priv) {
1053                 printk(KERN_ALERT PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1054                 goto enbl_cmpl_err;
1055         }
1056         if (ofld_kcqe->completion_status) {
1057                 goto enbl_cmpl_err;
1058         } else {
1059                 /* enable successful - rport ready for issuing IOs */
1060                 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1061                 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1062                 wake_up_interruptible(&tgt->ofld_wait);
1063         }
1064         return;
1065
1066 enbl_cmpl_err:
1067         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1068         wake_up_interruptible(&tgt->ofld_wait);
1069 }
1070
1071 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1072                                         struct fcoe_kcqe *disable_kcqe)
1073 {
1074
1075         struct bnx2fc_rport             *tgt;
1076         u32                             conn_id;
1077
1078         conn_id = disable_kcqe->fcoe_conn_id;
1079         tgt = hba->tgt_ofld_list[conn_id];
1080         if (!tgt) {
1081                 printk(KERN_ALERT PFX "ERROR: disable_cmpl: No disable req\n");
1082                 return;
1083         }
1084
1085         BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1086
1087         if (disable_kcqe->completion_status) {
1088                 printk(KERN_ALERT PFX "ERROR: Disable failed with cmpl status %d\n",
1089                         disable_kcqe->completion_status);
1090                 return;
1091         } else {
1092                 /* disable successful */
1093                 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1094                 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1095                 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1096                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1097                 wake_up_interruptible(&tgt->upld_wait);
1098         }
1099 }
1100
1101 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1102                                         struct fcoe_kcqe *destroy_kcqe)
1103 {
1104         struct bnx2fc_rport             *tgt;
1105         u32                             conn_id;
1106
1107         conn_id = destroy_kcqe->fcoe_conn_id;
1108         tgt = hba->tgt_ofld_list[conn_id];
1109         if (!tgt) {
1110                 printk(KERN_ALERT PFX "destroy_cmpl: No destroy req\n");
1111                 return;
1112         }
1113
1114         BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1115
1116         if (destroy_kcqe->completion_status) {
1117                 printk(KERN_ALERT PFX "Destroy conn failed, cmpl status %d\n",
1118                         destroy_kcqe->completion_status);
1119                 return;
1120         } else {
1121                 /* destroy successful */
1122                 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1123                 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1124                 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1125                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1126                 wake_up_interruptible(&tgt->upld_wait);
1127         }
1128 }
1129
1130 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1131 {
1132         switch (err_code) {
1133         case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1134                 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1135                 break;
1136
1137         case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1138                 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1139                 break;
1140
1141         case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1142                 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1143                 break;
1144
1145         default:
1146                 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1147         }
1148 }
1149
1150 /**
1151  * bnx2fc_indicae_kcqe - process KCQE
1152  *
1153  * @hba:        adapter structure pointer
1154  * @kcqe:       kcqe pointer
1155  * @num_cqe:    Number of completion queue elements
1156  *
1157  * Generic KCQ event handler
1158  */
1159 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1160                                         u32 num_cqe)
1161 {
1162         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1163         int i = 0;
1164         struct fcoe_kcqe *kcqe = NULL;
1165
1166         while (i < num_cqe) {
1167                 kcqe = (struct fcoe_kcqe *) kcq[i++];
1168
1169                 switch (kcqe->op_code) {
1170                 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1171                         bnx2fc_fastpath_notification(hba, kcqe);
1172                         break;
1173
1174                 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1175                         bnx2fc_process_ofld_cmpl(hba, kcqe);
1176                         break;
1177
1178                 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1179                         bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1180                         break;
1181
1182                 case FCOE_KCQE_OPCODE_INIT_FUNC:
1183                         if (kcqe->completion_status !=
1184                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1185                                 bnx2fc_init_failure(hba,
1186                                                 kcqe->completion_status);
1187                         } else {
1188                                 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1189                                 bnx2fc_get_link_state(hba);
1190                                 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1191                                         (u8)hba->pcidev->bus->number);
1192                         }
1193                         break;
1194
1195                 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1196                         if (kcqe->completion_status !=
1197                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1198
1199                                 printk(KERN_ERR PFX "DESTROY failed\n");
1200                         } else {
1201                                 printk(KERN_ERR PFX "DESTROY success\n");
1202                         }
1203                         hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
1204                         wake_up_interruptible(&hba->destroy_wait);
1205                         break;
1206
1207                 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1208                         bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1209                         break;
1210
1211                 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1212                         bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1213                         break;
1214
1215                 case FCOE_KCQE_OPCODE_STAT_FUNC:
1216                         if (kcqe->completion_status !=
1217                             FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1218                                 printk(KERN_ERR PFX "STAT failed\n");
1219                         complete(&hba->stat_req_done);
1220                         break;
1221
1222                 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1223                         /* fall thru */
1224                 default:
1225                         printk(KERN_ALERT PFX "unknown opcode 0x%x\n",
1226                                                                 kcqe->op_code);
1227                 }
1228         }
1229 }
1230
1231 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1232 {
1233         struct fcoe_sqe *sqe;
1234
1235         sqe = &tgt->sq[tgt->sq_prod_idx];
1236
1237         /* Fill SQ WQE */
1238         sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1239         sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1240
1241         /* Advance SQ Prod Idx */
1242         if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1243                 tgt->sq_prod_idx = 0;
1244                 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1245         }
1246 }
1247
1248 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1249 {
1250         struct b577xx_doorbell_set_prod ev_doorbell;
1251         u32 msg;
1252
1253         wmb();
1254
1255         memset(&ev_doorbell, 0, sizeof(struct b577xx_doorbell_set_prod));
1256         ev_doorbell.header.header = B577XX_DOORBELL_HDR_DB_TYPE;
1257
1258         ev_doorbell.prod = tgt->sq_prod_idx |
1259                                 (tgt->sq_curr_toggle_bit << 15);
1260         ev_doorbell.header.header |= B577XX_FCOE_CONNECTION_TYPE <<
1261                                         B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT;
1262         msg = *((u32 *)&ev_doorbell);
1263         writel(cpu_to_le32(msg), tgt->ctx_base);
1264
1265         mmiowb();
1266
1267 }
1268
1269 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1270 {
1271         u32 context_id = tgt->context_id;
1272         struct fcoe_port *port = tgt->port;
1273         u32 reg_off;
1274         resource_size_t reg_base;
1275         struct bnx2fc_hba *hba = port->priv;
1276
1277         reg_base = pci_resource_start(hba->pcidev,
1278                                         BNX2X_DOORBELL_PCI_BAR);
1279         reg_off = BNX2FC_5771X_DB_PAGE_SIZE *
1280                         (context_id & 0x1FFFF) + DPM_TRIGER_TYPE;
1281         tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
1282         if (!tgt->ctx_base)
1283                 return -ENOMEM;
1284         return 0;
1285 }
1286
1287 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1288 {
1289         char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1290
1291         if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1292                 return NULL;
1293
1294         tgt->rq_cons_idx += num_items;
1295
1296         if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1297                 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1298
1299         return buf;
1300 }
1301
1302 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1303 {
1304         /* return the rq buffer */
1305         u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1306         if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1307                 /* Wrap around RQ */
1308                 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1309         }
1310         tgt->rq_prod_idx = next_prod_idx;
1311         tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1312 }
1313
1314 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1315                               struct fcoe_task_ctx_entry *task,
1316                               u16 orig_xid)
1317 {
1318         u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1319         struct bnx2fc_rport *tgt = io_req->tgt;
1320         u32 context_id = tgt->context_id;
1321
1322         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1323
1324         /* Tx Write Rx Read */
1325         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1326                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1327         task->tx_wr_rx_rd.init_flags = task_type <<
1328                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1329         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1330                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1331         /* Common */
1332         task->cmn.common_flags = context_id <<
1333                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1334         task->cmn.general.cleanup_info.task_id = orig_xid;
1335
1336
1337 }
1338
1339 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1340                                 struct fcoe_task_ctx_entry *task)
1341 {
1342         struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1343         struct bnx2fc_rport *tgt = io_req->tgt;
1344         struct fc_frame_header *fc_hdr;
1345         u8 task_type = 0;
1346         u64 *hdr;
1347         u64 temp_hdr[3];
1348         u32 context_id;
1349
1350
1351         /* Obtain task_type */
1352         if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1353             (io_req->cmd_type == BNX2FC_ELS)) {
1354                 task_type = FCOE_TASK_TYPE_MIDPATH;
1355         } else if (io_req->cmd_type == BNX2FC_ABTS) {
1356                 task_type = FCOE_TASK_TYPE_ABTS;
1357         }
1358
1359         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1360
1361         /* Setup the task from io_req for easy reference */
1362         io_req->task = task;
1363
1364         BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1365                 io_req->cmd_type, task_type);
1366
1367         /* Tx only */
1368         if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1369             (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1370                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1371                                 (u32)mp_req->mp_req_bd_dma;
1372                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1373                                 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1374                 task->tx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
1375                 BNX2FC_IO_DBG(io_req, "init_mp_task - bd_dma = 0x%llx\n",
1376                               (unsigned long long)mp_req->mp_req_bd_dma);
1377         }
1378
1379         /* Tx Write Rx Read */
1380         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1381                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1382         task->tx_wr_rx_rd.init_flags = task_type <<
1383                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1384         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
1385                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
1386         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1387                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1388
1389         /* Common */
1390         task->cmn.data_2_trns = io_req->data_xfer_len;
1391         context_id = tgt->context_id;
1392         task->cmn.common_flags = context_id <<
1393                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1394         task->cmn.common_flags |= 1 <<
1395                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
1396         task->cmn.common_flags |= 1 <<
1397                         FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
1398
1399         /* Rx Write Tx Read */
1400         fc_hdr = &(mp_req->req_fc_hdr);
1401         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1402                 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1403                 fc_hdr->fh_rx_id = htons(0xffff);
1404                 task->rx_wr_tx_rd.rx_id = 0xffff;
1405         } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1406                 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1407         }
1408
1409         /* Fill FC Header into middle path buffer */
1410         hdr = (u64 *) &task->cmn.general.cmd_info.mp_fc_frame.fc_hdr;
1411         memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1412         hdr[0] = cpu_to_be64(temp_hdr[0]);
1413         hdr[1] = cpu_to_be64(temp_hdr[1]);
1414         hdr[2] = cpu_to_be64(temp_hdr[2]);
1415
1416         /* Rx Only */
1417         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1418
1419                 task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1420                                 (u32)mp_req->mp_resp_bd_dma;
1421                 task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1422                                 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1423                 task->rx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
1424         }
1425 }
1426
1427 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1428                              struct fcoe_task_ctx_entry *task)
1429 {
1430         u8 task_type;
1431         struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1432         struct io_bdt *bd_tbl = io_req->bd_tbl;
1433         struct bnx2fc_rport *tgt = io_req->tgt;
1434         u64 *fcp_cmnd;
1435         u64 tmp_fcp_cmnd[4];
1436         u32 context_id;
1437         int cnt, i;
1438         int bd_count;
1439
1440         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1441
1442         /* Setup the task from io_req for easy reference */
1443         io_req->task = task;
1444
1445         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1446                 task_type = FCOE_TASK_TYPE_WRITE;
1447         else
1448                 task_type = FCOE_TASK_TYPE_READ;
1449
1450         /* Tx only */
1451         if (task_type == FCOE_TASK_TYPE_WRITE) {
1452                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1453                                 (u32)bd_tbl->bd_tbl_dma;
1454                 task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1455                                 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1456                 task->tx_wr_only.sgl_ctx.mul_sges.sgl_size =
1457                                 bd_tbl->bd_valid;
1458         }
1459
1460         /*Tx Write Rx Read */
1461         /* Init state to NORMAL */
1462         task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1463                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
1464         task->tx_wr_rx_rd.init_flags = task_type <<
1465                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
1466         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
1467                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
1468         task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1469                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
1470
1471         /* Common */
1472         task->cmn.data_2_trns = io_req->data_xfer_len;
1473         context_id = tgt->context_id;
1474         task->cmn.common_flags = context_id <<
1475                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
1476         task->cmn.common_flags |= 1 <<
1477                                 FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
1478         task->cmn.common_flags |= 1 <<
1479                         FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
1480
1481         /* Set initiative ownership */
1482         task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_SEQ_INIT;
1483
1484         /* Set initial seq counter */
1485         task->cmn.tx_low_seq_cnt = 1;
1486
1487         /* Set state to "waiting for the first packet" */
1488         task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME;
1489
1490         /* Fill FCP_CMND IU */
1491         fcp_cmnd = (u64 *)
1492                     task->cmn.general.cmd_info.fcp_cmd_payload.opaque;
1493         bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1494
1495         /* swap fcp_cmnd */
1496         cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1497
1498         for (i = 0; i < cnt; i++) {
1499                 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1500                 fcp_cmnd++;
1501         }
1502
1503         /* Rx Write Tx Read */
1504         task->rx_wr_tx_rd.rx_id = 0xffff;
1505
1506         /* Rx Only */
1507         if (task_type == FCOE_TASK_TYPE_READ) {
1508
1509                 bd_count = bd_tbl->bd_valid;
1510                 if (bd_count == 1) {
1511
1512                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1513
1514                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.lo =
1515                                         fcoe_bd_tbl->buf_addr_lo;
1516                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.hi =
1517                                         fcoe_bd_tbl->buf_addr_hi;
1518                         task->rx_wr_only.sgl_ctx.single_sge.cur_buf_rem =
1519                                         fcoe_bd_tbl->buf_len;
1520                         task->tx_wr_rx_rd.init_flags |= 1 <<
1521                                 FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE_SHIFT;
1522                 } else {
1523
1524                         task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
1525                                         (u32)bd_tbl->bd_tbl_dma;
1526                         task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
1527                                         (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1528                         task->rx_wr_only.sgl_ctx.mul_sges.sgl_size =
1529                                         bd_tbl->bd_valid;
1530                 }
1531         }
1532 }
1533
1534 /**
1535  * bnx2fc_setup_task_ctx - allocate and map task context
1536  *
1537  * @hba:        pointer to adapter structure
1538  *
1539  * allocate memory for task context, and associated BD table to be used
1540  * by firmware
1541  *
1542  */
1543 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1544 {
1545         int rc = 0;
1546         struct regpair *task_ctx_bdt;
1547         dma_addr_t addr;
1548         int i;
1549
1550         /*
1551          * Allocate task context bd table. A page size of bd table
1552          * can map 256 buffers. Each buffer contains 32 task context
1553          * entries. Hence the limit with one page is 8192 task context
1554          * entries.
1555          */
1556         hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1557                                                   PAGE_SIZE,
1558                                                   &hba->task_ctx_bd_dma,
1559                                                   GFP_KERNEL);
1560         if (!hba->task_ctx_bd_tbl) {
1561                 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1562                 rc = -1;
1563                 goto out;
1564         }
1565         memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
1566
1567         /*
1568          * Allocate task_ctx which is an array of pointers pointing to
1569          * a page containing 32 task contexts
1570          */
1571         hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
1572                                  GFP_KERNEL);
1573         if (!hba->task_ctx) {
1574                 printk(KERN_ERR PFX "unable to allocate task context array\n");
1575                 rc = -1;
1576                 goto out1;
1577         }
1578
1579         /*
1580          * Allocate task_ctx_dma which is an array of dma addresses
1581          */
1582         hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
1583                                         sizeof(dma_addr_t)), GFP_KERNEL);
1584         if (!hba->task_ctx_dma) {
1585                 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1586                 rc = -1;
1587                 goto out2;
1588         }
1589
1590         task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1591         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1592
1593                 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1594                                                       PAGE_SIZE,
1595                                                       &hba->task_ctx_dma[i],
1596                                                       GFP_KERNEL);
1597                 if (!hba->task_ctx[i]) {
1598                         printk(KERN_ERR PFX "unable to alloc task context\n");
1599                         rc = -1;
1600                         goto out3;
1601                 }
1602                 memset(hba->task_ctx[i], 0, PAGE_SIZE);
1603                 addr = (u64)hba->task_ctx_dma[i];
1604                 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1605                 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1606                 task_ctx_bdt++;
1607         }
1608         return 0;
1609
1610 out3:
1611         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1612                 if (hba->task_ctx[i]) {
1613
1614                         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1615                                 hba->task_ctx[i], hba->task_ctx_dma[i]);
1616                         hba->task_ctx[i] = NULL;
1617                 }
1618         }
1619
1620         kfree(hba->task_ctx_dma);
1621         hba->task_ctx_dma = NULL;
1622 out2:
1623         kfree(hba->task_ctx);
1624         hba->task_ctx = NULL;
1625 out1:
1626         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1627                         hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1628         hba->task_ctx_bd_tbl = NULL;
1629 out:
1630         return rc;
1631 }
1632
1633 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1634 {
1635         int i;
1636
1637         if (hba->task_ctx_bd_tbl) {
1638                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1639                                     hba->task_ctx_bd_tbl,
1640                                     hba->task_ctx_bd_dma);
1641                 hba->task_ctx_bd_tbl = NULL;
1642         }
1643
1644         if (hba->task_ctx) {
1645                 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1646                         if (hba->task_ctx[i]) {
1647                                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1648                                                     hba->task_ctx[i],
1649                                                     hba->task_ctx_dma[i]);
1650                                 hba->task_ctx[i] = NULL;
1651                         }
1652                 }
1653                 kfree(hba->task_ctx);
1654                 hba->task_ctx = NULL;
1655         }
1656
1657         kfree(hba->task_ctx_dma);
1658         hba->task_ctx_dma = NULL;
1659 }
1660
1661 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1662 {
1663         int i;
1664         int segment_count;
1665         int hash_table_size;
1666         u32 *pbl;
1667
1668         segment_count = hba->hash_tbl_segment_count;
1669         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1670                 sizeof(struct fcoe_hash_table_entry);
1671
1672         pbl = hba->hash_tbl_pbl;
1673         for (i = 0; i < segment_count; ++i) {
1674                 dma_addr_t dma_address;
1675
1676                 dma_address = le32_to_cpu(*pbl);
1677                 ++pbl;
1678                 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
1679                 ++pbl;
1680                 dma_free_coherent(&hba->pcidev->dev,
1681                                   BNX2FC_HASH_TBL_CHUNK_SIZE,
1682                                   hba->hash_tbl_segments[i],
1683                                   dma_address);
1684
1685         }
1686
1687         if (hba->hash_tbl_pbl) {
1688                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1689                                     hba->hash_tbl_pbl,
1690                                     hba->hash_tbl_pbl_dma);
1691                 hba->hash_tbl_pbl = NULL;
1692         }
1693 }
1694
1695 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
1696 {
1697         int i;
1698         int hash_table_size;
1699         int segment_count;
1700         int segment_array_size;
1701         int dma_segment_array_size;
1702         dma_addr_t *dma_segment_array;
1703         u32 *pbl;
1704
1705         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1706                 sizeof(struct fcoe_hash_table_entry);
1707
1708         segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
1709         segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
1710         hba->hash_tbl_segment_count = segment_count;
1711
1712         segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
1713         hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
1714         if (!hba->hash_tbl_segments) {
1715                 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
1716                 return -ENOMEM;
1717         }
1718         dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
1719         dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
1720         if (!dma_segment_array) {
1721                 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
1722                 return -ENOMEM;
1723         }
1724
1725         for (i = 0; i < segment_count; ++i) {
1726                 hba->hash_tbl_segments[i] =
1727                         dma_alloc_coherent(&hba->pcidev->dev,
1728                                            BNX2FC_HASH_TBL_CHUNK_SIZE,
1729                                            &dma_segment_array[i],
1730                                            GFP_KERNEL);
1731                 if (!hba->hash_tbl_segments[i]) {
1732                         printk(KERN_ERR PFX "hash segment alloc failed\n");
1733                         while (--i >= 0) {
1734                                 dma_free_coherent(&hba->pcidev->dev,
1735                                                     BNX2FC_HASH_TBL_CHUNK_SIZE,
1736                                                     hba->hash_tbl_segments[i],
1737                                                     dma_segment_array[i]);
1738                                 hba->hash_tbl_segments[i] = NULL;
1739                         }
1740                         kfree(dma_segment_array);
1741                         return -ENOMEM;
1742                 }
1743                 memset(hba->hash_tbl_segments[i], 0,
1744                        BNX2FC_HASH_TBL_CHUNK_SIZE);
1745         }
1746
1747         hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
1748                                                PAGE_SIZE,
1749                                                &hba->hash_tbl_pbl_dma,
1750                                                GFP_KERNEL);
1751         if (!hba->hash_tbl_pbl) {
1752                 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
1753                 kfree(dma_segment_array);
1754                 return -ENOMEM;
1755         }
1756         memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
1757
1758         pbl = hba->hash_tbl_pbl;
1759         for (i = 0; i < segment_count; ++i) {
1760                 u64 paddr = dma_segment_array[i];
1761                 *pbl = cpu_to_le32((u32) paddr);
1762                 ++pbl;
1763                 *pbl = cpu_to_le32((u32) (paddr >> 32));
1764                 ++pbl;
1765         }
1766         pbl = hba->hash_tbl_pbl;
1767         i = 0;
1768         while (*pbl && *(pbl + 1)) {
1769                 u32 lo;
1770                 u32 hi;
1771                 lo = *pbl;
1772                 ++pbl;
1773                 hi = *pbl;
1774                 ++pbl;
1775                 ++i;
1776         }
1777         kfree(dma_segment_array);
1778         return 0;
1779 }
1780
1781 /**
1782  * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
1783  *
1784  * @hba:        Pointer to adapter structure
1785  *
1786  */
1787 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
1788 {
1789         u64 addr;
1790         u32 mem_size;
1791         int i;
1792
1793         if (bnx2fc_allocate_hash_table(hba))
1794                 return -ENOMEM;
1795
1796         mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1797         hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1798                                                   &hba->t2_hash_tbl_ptr_dma,
1799                                                   GFP_KERNEL);
1800         if (!hba->t2_hash_tbl_ptr) {
1801                 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
1802                 bnx2fc_free_fw_resc(hba);
1803                 return -ENOMEM;
1804         }
1805         memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
1806
1807         mem_size = BNX2FC_NUM_MAX_SESS *
1808                                 sizeof(struct fcoe_t2_hash_table_entry);
1809         hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
1810                                               &hba->t2_hash_tbl_dma,
1811                                               GFP_KERNEL);
1812         if (!hba->t2_hash_tbl) {
1813                 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
1814                 bnx2fc_free_fw_resc(hba);
1815                 return -ENOMEM;
1816         }
1817         memset(hba->t2_hash_tbl, 0x00, mem_size);
1818         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
1819                 addr = (unsigned long) hba->t2_hash_tbl_dma +
1820                          ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
1821                 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
1822                 hba->t2_hash_tbl[i].next.hi = addr >> 32;
1823         }
1824
1825         hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1826                                                PAGE_SIZE, &hba->dummy_buf_dma,
1827                                                GFP_KERNEL);
1828         if (!hba->dummy_buffer) {
1829                 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
1830                 bnx2fc_free_fw_resc(hba);
1831                 return -ENOMEM;
1832         }
1833
1834         hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
1835                                                PAGE_SIZE,
1836                                                &hba->stats_buf_dma,
1837                                                GFP_KERNEL);
1838         if (!hba->stats_buffer) {
1839                 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
1840                 bnx2fc_free_fw_resc(hba);
1841                 return -ENOMEM;
1842         }
1843         memset(hba->stats_buffer, 0x00, PAGE_SIZE);
1844
1845         return 0;
1846 }
1847
1848 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
1849 {
1850         u32 mem_size;
1851
1852         if (hba->stats_buffer) {
1853                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1854                                   hba->stats_buffer, hba->stats_buf_dma);
1855                 hba->stats_buffer = NULL;
1856         }
1857
1858         if (hba->dummy_buffer) {
1859                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1860                                   hba->dummy_buffer, hba->dummy_buf_dma);
1861                 hba->dummy_buffer = NULL;
1862         }
1863
1864         if (hba->t2_hash_tbl_ptr) {
1865                 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
1866                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1867                                     hba->t2_hash_tbl_ptr,
1868                                     hba->t2_hash_tbl_ptr_dma);
1869                 hba->t2_hash_tbl_ptr = NULL;
1870         }
1871
1872         if (hba->t2_hash_tbl) {
1873                 mem_size = BNX2FC_NUM_MAX_SESS *
1874                             sizeof(struct fcoe_t2_hash_table_entry);
1875                 dma_free_coherent(&hba->pcidev->dev, mem_size,
1876                                     hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
1877                 hba->t2_hash_tbl = NULL;
1878         }
1879         bnx2fc_free_hash_table(hba);
1880 }