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 *destroy_kcqe);
  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_ERR 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
 107         fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
 108         fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
 109                                            ((u64) hba->hash_tbl_pbl_dma >> 32);
 110
 111         fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
 112         fcoe_init2.t2_hash_tbl_addr_hi = (u32)
 113                                           ((u64) hba->t2_hash_tbl_dma >> 32);
 114
 115         fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
 116         fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
 117                                         ((u64) hba->t2_hash_tbl_ptr_dma >> 32);
 118
 119         fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
 120
 121         /* fill init3 KWQE */
 122         memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
 123         fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
 124         fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 125                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 126         fcoe_init3.error_bit_map_lo = 0xffffffff;
 127         fcoe_init3.error_bit_map_hi = 0xffffffff;
 128
 129         fcoe_init3.perf_config = 1;
 130
 131         kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
 132         kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
 133         kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
 134
 135         if (hba->cnic && hba->cnic->submit_kwqes)
 136                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 137
 138         return rc;
 139 }
 140 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
 141 {
 142         struct fcoe_kwqe_destroy fcoe_destroy;
 143         struct kwqe *kwqe_arr[2];
 144         int num_kwqes = 1;
 145         int rc = -1;
 146
 147         /* fill destroy KWQE */
 148         memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
 149         fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
 150         fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 151                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 152         kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
 153
 154         if (hba->cnic && hba->cnic->submit_kwqes)
 155                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 156         return rc;
 157 }
 158
 159 /**
 160  * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
 161  *
 162  * @port:               port structure pointer
 163  * @tgt:                bnx2fc_rport structure pointer
 164  */
 165 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
 166                                         struct bnx2fc_rport *tgt)
 167 {
 168         struct fc_lport *lport = port->lport;
 169         struct bnx2fc_interface *interface = port->priv;
 170         struct bnx2fc_hba *hba = interface->hba;
 171         struct kwqe *kwqe_arr[4];
 172         struct fcoe_kwqe_conn_offload1 ofld_req1;
 173         struct fcoe_kwqe_conn_offload2 ofld_req2;
 174         struct fcoe_kwqe_conn_offload3 ofld_req3;
 175         struct fcoe_kwqe_conn_offload4 ofld_req4;
 176         struct fc_rport_priv *rdata = tgt->rdata;
 177         struct fc_rport *rport = tgt->rport;
 178         int num_kwqes = 4;
 179         u32 port_id;
 180         int rc = 0;
 181         u16 conn_id;
 182
 183         /* Initialize offload request 1 structure */
 184         memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
 185
 186         ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
 187         ofld_req1.hdr.flags =
 188                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 189
 190
 191         conn_id = (u16)tgt->fcoe_conn_id;
 192         ofld_req1.fcoe_conn_id = conn_id;
 193
 194
 195         ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
 196         ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
 197
 198         ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
 199         ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
 200
 201         ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
 202         ofld_req1.rq_first_pbe_addr_hi =
 203                                 (u32)((u64) tgt->rq_dma >> 32);
 204
 205         ofld_req1.rq_prod = 0x8000;
 206
 207         /* Initialize offload request 2 structure */
 208         memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
 209
 210         ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
 211         ofld_req2.hdr.flags =
 212                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 213
 214         ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
 215
 216         ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
 217         ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
 218
 219         ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
 220         ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
 221
 222         ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
 223         ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
 224
 225         /* Initialize offload request 3 structure */
 226         memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
 227
 228         ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
 229         ofld_req3.hdr.flags =
 230                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 231
 232         ofld_req3.vlan_tag = interface->vlan_id <<
 233                                 FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
 234         ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
 235
 236         port_id = fc_host_port_id(lport->host);
 237         if (port_id == 0) {
 238                 BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?\n");
 239                 return -EINVAL;
 240         }
 241
 242         /*
 243          * Store s_id of the initiator for further reference. This will
 244          * be used during disable/destroy during linkdown processing as
 245          * when the lport is reset, the port_id also is reset to 0
 246          */
 247         tgt->sid = port_id;
 248         ofld_req3.s_id[0] = (port_id & 0x000000FF);
 249         ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
 250         ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
 251
 252         port_id = rport->port_id;
 253         ofld_req3.d_id[0] = (port_id & 0x000000FF);
 254         ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
 255         ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
 256
 257         ofld_req3.tx_total_conc_seqs = rdata->max_seq;
 258
 259         ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
 260         ofld_req3.rx_max_fc_pay_len  = lport->mfs;
 261
 262         ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
 263         ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
 264         ofld_req3.rx_open_seqs_exch_c3 = 1;
 265
 266         ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
 267         ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
 268
 269         /* set mul_n_port_ids supported flag to 0, until it is supported */
 270         ofld_req3.flags = 0;
 271         /*
 272         ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
 273                             FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
 274         */
 275         /* Info from PLOGI response */
 276         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
 277                              FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
 278
 279         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
 280                              FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
 281
 282         /*
 283          * Info from PRLI response, this info is used for sequence level error
 284          * recovery support
 285          */
 286         if (tgt->dev_type == TYPE_TAPE) {
 287                 ofld_req3.flags |= 1 <<
 288                                     FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT;
 289                 ofld_req3.flags |= (((rdata->flags & FC_RP_FLAGS_REC_SUPPORTED)
 290                                     ? 1 : 0) <<
 291                                     FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT);
 292         }
 293
 294         /* vlan flag */
 295         ofld_req3.flags |= (interface->vlan_enabled <<
 296                             FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
 297
 298         /* C2_VALID and ACK flags are not set as they are not suppported */
 299
 300
 301         /* Initialize offload request 4 structure */
 302         memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
 303         ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
 304         ofld_req4.hdr.flags =
 305                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 306
 307         ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
 308
 309
 310         ofld_req4.src_mac_addr_lo[0] =  port->data_src_addr[5];
 311                                                         /* local mac */
 312         ofld_req4.src_mac_addr_lo[1] =  port->data_src_addr[4];
 313         ofld_req4.src_mac_addr_mid[0] =  port->data_src_addr[3];
 314         ofld_req4.src_mac_addr_mid[1] =  port->data_src_addr[2];
 315         ofld_req4.src_mac_addr_hi[0] =  port->data_src_addr[1];
 316         ofld_req4.src_mac_addr_hi[1] =  port->data_src_addr[0];
 317         ofld_req4.dst_mac_addr_lo[0] =  interface->ctlr.dest_addr[5];
 318                                                         /* fcf mac */
 319         ofld_req4.dst_mac_addr_lo[1] =  interface->ctlr.dest_addr[4];
 320         ofld_req4.dst_mac_addr_mid[0] =  interface->ctlr.dest_addr[3];
 321         ofld_req4.dst_mac_addr_mid[1] =  interface->ctlr.dest_addr[2];
 322         ofld_req4.dst_mac_addr_hi[0] =  interface->ctlr.dest_addr[1];
 323         ofld_req4.dst_mac_addr_hi[1] =  interface->ctlr.dest_addr[0];
 324
 325         ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
 326         ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
 327
 328         ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
 329         ofld_req4.confq_pbl_base_addr_hi =
 330                                         (u32)((u64) tgt->confq_pbl_dma >> 32);
 331
 332         kwqe_arr[0] = (struct kwqe *) &ofld_req1;
 333         kwqe_arr[1] = (struct kwqe *) &ofld_req2;
 334         kwqe_arr[2] = (struct kwqe *) &ofld_req3;
 335         kwqe_arr[3] = (struct kwqe *) &ofld_req4;
 336
 337         if (hba->cnic && hba->cnic->submit_kwqes)
 338                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 339
 340         return rc;
 341 }
 342
 343 /**
 344  * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
 345  *
 346  * @port:               port structure pointer
 347  * @tgt:                bnx2fc_rport structure pointer
 348  */
 349 static int bnx2fc_send_session_enable_req(struct fcoe_port *port,
 350                                         struct bnx2fc_rport *tgt)
 351 {
 352         struct kwqe *kwqe_arr[2];
 353         struct bnx2fc_interface *interface = port->priv;
 354         struct bnx2fc_hba *hba = interface->hba;
 355         struct fcoe_kwqe_conn_enable_disable enbl_req;
 356         struct fc_lport *lport = port->lport;
 357         struct fc_rport *rport = tgt->rport;
 358         int num_kwqes = 1;
 359         int rc = 0;
 360         u32 port_id;
 361
 362         memset(&enbl_req, 0x00,
 363                sizeof(struct fcoe_kwqe_conn_enable_disable));
 364         enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
 365         enbl_req.hdr.flags =
 366                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 367
 368         enbl_req.src_mac_addr_lo[0] =  port->data_src_addr[5];
 369                                                         /* local mac */
 370         enbl_req.src_mac_addr_lo[1] =  port->data_src_addr[4];
 371         enbl_req.src_mac_addr_mid[0] =  port->data_src_addr[3];
 372         enbl_req.src_mac_addr_mid[1] =  port->data_src_addr[2];
 373         enbl_req.src_mac_addr_hi[0] =  port->data_src_addr[1];
 374         enbl_req.src_mac_addr_hi[1] =  port->data_src_addr[0];
 375         memcpy(tgt->src_addr, port->data_src_addr, ETH_ALEN);
 376
 377         enbl_req.dst_mac_addr_lo[0] =  interface->ctlr.dest_addr[5];
 378         enbl_req.dst_mac_addr_lo[1] =  interface->ctlr.dest_addr[4];
 379         enbl_req.dst_mac_addr_mid[0] =  interface->ctlr.dest_addr[3];
 380         enbl_req.dst_mac_addr_mid[1] =  interface->ctlr.dest_addr[2];
 381         enbl_req.dst_mac_addr_hi[0] =  interface->ctlr.dest_addr[1];
 382         enbl_req.dst_mac_addr_hi[1] =  interface->ctlr.dest_addr[0];
 383
 384         port_id = fc_host_port_id(lport->host);
 385         if (port_id != tgt->sid) {
 386                 printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
 387                                 "sid = 0x%x\n", port_id, tgt->sid);
 388                 port_id = tgt->sid;
 389         }
 390         enbl_req.s_id[0] = (port_id & 0x000000FF);
 391         enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 392         enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 393
 394         port_id = rport->port_id;
 395         enbl_req.d_id[0] = (port_id & 0x000000FF);
 396         enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 397         enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 398         enbl_req.vlan_tag = interface->vlan_id <<
 399                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 400         enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 401         enbl_req.vlan_flag = interface->vlan_enabled;
 402         enbl_req.context_id = tgt->context_id;
 403         enbl_req.conn_id = tgt->fcoe_conn_id;
 404
 405         kwqe_arr[0] = (struct kwqe *) &enbl_req;
 406
 407         if (hba->cnic && hba->cnic->submit_kwqes)
 408                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 409         return rc;
 410 }
 411
 412 /**
 413  * bnx2fc_send_session_disable_req - initiates FCoE Session disable
 414  *
 415  * @port:               port structure pointer
 416  * @tgt:                bnx2fc_rport structure pointer
 417  */
 418 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
 419                                     struct bnx2fc_rport *tgt)
 420 {
 421         struct bnx2fc_interface *interface = port->priv;
 422         struct bnx2fc_hba *hba = interface->hba;
 423         struct fcoe_kwqe_conn_enable_disable disable_req;
 424         struct kwqe *kwqe_arr[2];
 425         struct fc_rport *rport = tgt->rport;
 426         int num_kwqes = 1;
 427         int rc = 0;
 428         u32 port_id;
 429
 430         memset(&disable_req, 0x00,
 431                sizeof(struct fcoe_kwqe_conn_enable_disable));
 432         disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
 433         disable_req.hdr.flags =
 434                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 435
 436         disable_req.src_mac_addr_lo[0] =  tgt->src_addr[5];
 437         disable_req.src_mac_addr_lo[1] =  tgt->src_addr[4];
 438         disable_req.src_mac_addr_mid[0] =  tgt->src_addr[3];
 439         disable_req.src_mac_addr_mid[1] =  tgt->src_addr[2];
 440         disable_req.src_mac_addr_hi[0] =  tgt->src_addr[1];
 441         disable_req.src_mac_addr_hi[1] =  tgt->src_addr[0];
 442
 443         disable_req.dst_mac_addr_lo[0] =  interface->ctlr.dest_addr[5];
 444         disable_req.dst_mac_addr_lo[1] =  interface->ctlr.dest_addr[4];
 445         disable_req.dst_mac_addr_mid[0] =  interface->ctlr.dest_addr[3];
 446         disable_req.dst_mac_addr_mid[1] =  interface->ctlr.dest_addr[2];
 447         disable_req.dst_mac_addr_hi[0] =  interface->ctlr.dest_addr[1];
 448         disable_req.dst_mac_addr_hi[1] =  interface->ctlr.dest_addr[0];
 449
 450         port_id = tgt->sid;
 451         disable_req.s_id[0] = (port_id & 0x000000FF);
 452         disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 453         disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 454
 455
 456         port_id = rport->port_id;
 457         disable_req.d_id[0] = (port_id & 0x000000FF);
 458         disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 459         disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 460         disable_req.context_id = tgt->context_id;
 461         disable_req.conn_id = tgt->fcoe_conn_id;
 462         disable_req.vlan_tag = interface->vlan_id <<
 463                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 464         disable_req.vlan_tag |=
 465                         3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 466         disable_req.vlan_flag = interface->vlan_enabled;
 467
 468         kwqe_arr[0] = (struct kwqe *) &disable_req;
 469
 470         if (hba->cnic && hba->cnic->submit_kwqes)
 471                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 472
 473         return rc;
 474 }
 475
 476 /**
 477  * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
 478  *
 479  * @port:               port structure pointer
 480  * @tgt:                bnx2fc_rport structure pointer
 481  */
 482 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
 483                                         struct bnx2fc_rport *tgt)
 484 {
 485         struct fcoe_kwqe_conn_destroy destroy_req;
 486         struct kwqe *kwqe_arr[2];
 487         int num_kwqes = 1;
 488         int rc = 0;
 489
 490         memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
 491         destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
 492         destroy_req.hdr.flags =
 493                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 494
 495         destroy_req.context_id = tgt->context_id;
 496         destroy_req.conn_id = tgt->fcoe_conn_id;
 497
 498         kwqe_arr[0] = (struct kwqe *) &destroy_req;
 499
 500         if (hba->cnic && hba->cnic->submit_kwqes)
 501                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 502
 503         return rc;
 504 }
 505
 506 static bool is_valid_lport(struct bnx2fc_hba *hba, struct fc_lport *lport)
 507 {
 508         struct bnx2fc_lport *blport;
 509
 510         spin_lock_bh(&hba->hba_lock);
 511         list_for_each_entry(blport, &hba->vports, list) {
 512                 if (blport->lport == lport) {
 513                         spin_unlock_bh(&hba->hba_lock);
 514                         return true;
 515                 }
 516         }
 517         spin_unlock_bh(&hba->hba_lock);
 518         return false;
 519
 520 }
 521
 522
 523 static void bnx2fc_unsol_els_work(struct work_struct *work)
 524 {
 525         struct bnx2fc_unsol_els *unsol_els;
 526         struct fc_lport *lport;
 527         struct bnx2fc_hba *hba;
 528         struct fc_frame *fp;
 529
 530         unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
 531         lport = unsol_els->lport;
 532         fp = unsol_els->fp;
 533         hba = unsol_els->hba;
 534         if (is_valid_lport(hba, lport))
 535                 fc_exch_recv(lport, fp);
 536         kfree(unsol_els);
 537 }
 538
 539 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
 540                                    unsigned char *buf,
 541                                    u32 frame_len, u16 l2_oxid)
 542 {
 543         struct fcoe_port *port = tgt->port;
 544         struct fc_lport *lport = port->lport;
 545         struct bnx2fc_interface *interface = port->priv;
 546         struct bnx2fc_unsol_els *unsol_els;
 547         struct fc_frame_header *fh;
 548         struct fc_frame *fp;
 549         struct sk_buff *skb;
 550         u32 payload_len;
 551         u32 crc;
 552         u8 op;
 553
 554
 555         unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
 556         if (!unsol_els) {
 557                 BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work\n");
 558                 return;
 559         }
 560
 561         BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d\n",
 562                 l2_oxid, frame_len);
 563
 564         payload_len = frame_len - sizeof(struct fc_frame_header);
 565
 566         fp = fc_frame_alloc(lport, payload_len);
 567         if (!fp) {
 568                 printk(KERN_ERR PFX "fc_frame_alloc failure\n");
 569                 kfree(unsol_els);
 570                 return;
 571         }
 572
 573         fh = (struct fc_frame_header *) fc_frame_header_get(fp);
 574         /* Copy FC Frame header and payload into the frame */
 575         memcpy(fh, buf, frame_len);
 576
 577         if (l2_oxid != FC_XID_UNKNOWN)
 578                 fh->fh_ox_id = htons(l2_oxid);
 579
 580         skb = fp_skb(fp);
 581
 582         if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
 583             (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
 584
 585                 if (fh->fh_type == FC_TYPE_ELS) {
 586                         op = fc_frame_payload_op(fp);
 587                         if ((op == ELS_TEST) || (op == ELS_ESTC) ||
 588                             (op == ELS_FAN) || (op == ELS_CSU)) {
 589                                 /*
 590                                  * No need to reply for these
 591                                  * ELS requests
 592                                  */
 593                                 printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
 594                                 kfree_skb(skb);
 595                                 kfree(unsol_els);
 596                                 return;
 597                         }
 598                 }
 599                 crc = fcoe_fc_crc(fp);
 600                 fc_frame_init(fp);
 601                 fr_dev(fp) = lport;
 602                 fr_sof(fp) = FC_SOF_I3;
 603                 fr_eof(fp) = FC_EOF_T;
 604                 fr_crc(fp) = cpu_to_le32(~crc);
 605                 unsol_els->lport = lport;
 606                 unsol_els->hba = interface->hba;
 607                 unsol_els->fp = fp;
 608                 INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
 609                 queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
 610         } else {
 611                 BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
 612                 kfree_skb(skb);
 613                 kfree(unsol_els);
 614         }
 615 }
 616
 617 static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
 618 {
 619         u8 num_rq;
 620         struct fcoe_err_report_entry *err_entry;
 621         unsigned char *rq_data;
 622         unsigned char *buf = NULL, *buf1;
 623         int i;
 624         u16 xid;
 625         u32 frame_len, len;
 626         struct bnx2fc_cmd *io_req = NULL;
 627         struct fcoe_task_ctx_entry *task, *task_page;
 628         struct bnx2fc_interface *interface = tgt->port->priv;
 629         struct bnx2fc_hba *hba = interface->hba;
 630         int task_idx, index;
 631         int rc = 0;
 632         u64 err_warn_bit_map;
 633         u8 err_warn = 0xff;
 634
 635
 636         BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
 637         switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
 638         case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
 639                 frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
 640                              FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
 641
 642                 num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
 643
 644                 spin_lock_bh(&tgt->tgt_lock);
 645                 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
 646                 spin_unlock_bh(&tgt->tgt_lock);
 647
 648                 if (rq_data) {
 649                         buf = rq_data;
 650                 } else {
 651                         buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
 652                                               GFP_ATOMIC);
 653
 654                         if (!buf1) {
 655                                 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
 656                                 break;
 657                         }
 658
 659                         for (i = 0; i < num_rq; i++) {
 660                                 spin_lock_bh(&tgt->tgt_lock);
 661                                 rq_data = (unsigned char *)
 662                                            bnx2fc_get_next_rqe(tgt, 1);
 663                                 spin_unlock_bh(&tgt->tgt_lock);
 664                                 len = BNX2FC_RQ_BUF_SZ;
 665                                 memcpy(buf1, rq_data, len);
 666                                 buf1 += len;
 667                         }
 668                 }
 669                 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
 670                                               FC_XID_UNKNOWN);
 671
 672                 if (buf != rq_data)
 673                         kfree(buf);
 674                 spin_lock_bh(&tgt->tgt_lock);
 675                 bnx2fc_return_rqe(tgt, num_rq);
 676                 spin_unlock_bh(&tgt->tgt_lock);
 677                 break;
 678
 679         case FCOE_ERROR_DETECTION_CQE_TYPE:
 680                 /*
 681                  * In case of error reporting CQE a single RQ entry
 682                  * is consumed.
 683                  */
 684                 spin_lock_bh(&tgt->tgt_lock);
 685                 num_rq = 1;
 686                 err_entry = (struct fcoe_err_report_entry *)
 687                              bnx2fc_get_next_rqe(tgt, 1);
 688                 xid = err_entry->fc_hdr.ox_id;
 689                 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
 690                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
 691                         err_entry->data.err_warn_bitmap_hi,
 692                         err_entry->data.err_warn_bitmap_lo);
 693                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
 694                         err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 695
 696
 697                 if (xid > BNX2FC_MAX_XID) {
 698                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
 699                                    xid);
 700                         goto ret_err_rqe;
 701                 }
 702
 703                 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 704                 index = xid % BNX2FC_TASKS_PER_PAGE;
 705                 task_page = (struct fcoe_task_ctx_entry *)
 706                                         hba->task_ctx[task_idx];
 707                 task = &(task_page[index]);
 708
 709                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 710                 if (!io_req)
 711                         goto ret_err_rqe;
 712
 713                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 714                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 715                         goto ret_err_rqe;
 716                 }
 717
 718                 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
 719                                        &io_req->req_flags)) {
 720                         BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
 721                                             "progress.. ignore unsol err\n");
 722                         goto ret_err_rqe;
 723                 }
 724
 725                 err_warn_bit_map = (u64)
 726                         ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
 727                         (u64)err_entry->data.err_warn_bitmap_lo;
 728                 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
 729                         if (err_warn_bit_map & (u64)((u64)1 << i)) {
 730                                 err_warn = i;
 731                                 break;
 732                         }
 733                 }
 734
 735                 /*
 736                  * If ABTS is already in progress, and FW error is
 737                  * received after that, do not cancel the timeout_work
 738                  * and let the error recovery continue by explicitly
 739                  * logging out the target, when the ABTS eventually
 740                  * times out.
 741                  */
 742                 if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
 743                         printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
 744                                             "in ABTS processing\n", xid);
 745                         goto ret_err_rqe;
 746                 }
 747                 BNX2FC_TGT_DBG(tgt, "err = 0x%x\n", err_warn);
 748                 if (tgt->dev_type != TYPE_TAPE)
 749                         goto skip_rec;
 750                 switch (err_warn) {
 751                 case FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION:
 752                 case FCOE_ERROR_CODE_DATA_OOO_RO:
 753                 case FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT:
 754                 case FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET:
 755                 case FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ:
 756                 case FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET:
 757                         BNX2FC_TGT_DBG(tgt, "REC TOV popped for xid - 0x%x\n",
 758                                    xid);
 759                         memset(&io_req->err_entry, 0,
 760                                sizeof(struct fcoe_err_report_entry));
 761                         memcpy(&io_req->err_entry, err_entry,
 762                                sizeof(struct fcoe_err_report_entry));
 763                         if (!test_bit(BNX2FC_FLAG_SRR_SENT,
 764                                       &io_req->req_flags)) {
 765                                 spin_unlock_bh(&tgt->tgt_lock);
 766                                 rc = bnx2fc_send_rec(io_req);
 767                                 spin_lock_bh(&tgt->tgt_lock);
 768
 769                                 if (rc)
 770                                         goto skip_rec;
 771                         } else
 772                                 printk(KERN_ERR PFX "SRR in progress\n");
 773                         goto ret_err_rqe;
 774                         break;
 775                 default:
 776                         break;
 777                 }
 778
 779 skip_rec:
 780                 set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags);
 781                 /*
 782                  * Cancel the timeout_work, as we received IO
 783                  * completion with FW error.
 784                  */
 785                 if (cancel_delayed_work(&io_req->timeout_work))
 786                         kref_put(&io_req->refcount, bnx2fc_cmd_release);
 787
 788                 rc = bnx2fc_initiate_abts(io_req);
 789                 if (rc != SUCCESS) {
 790                         printk(KERN_ERR PFX "err_warn: initiate_abts "
 791                                 "failed xid = 0x%x. issue cleanup\n",
 792                                 io_req->xid);
 793                         bnx2fc_initiate_cleanup(io_req);
 794                 }
 795 ret_err_rqe:
 796                 bnx2fc_return_rqe(tgt, 1);
 797                 spin_unlock_bh(&tgt->tgt_lock);
 798                 break;
 799
 800         case FCOE_WARNING_DETECTION_CQE_TYPE:
 801                 /*
 802                  *In case of warning reporting CQE a single RQ entry
 803                  * is consumes.
 804                  */
 805                 spin_lock_bh(&tgt->tgt_lock);
 806                 num_rq = 1;
 807                 err_entry = (struct fcoe_err_report_entry *)
 808                              bnx2fc_get_next_rqe(tgt, 1);
 809                 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
 810                 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
 811                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
 812                         err_entry->data.err_warn_bitmap_hi,
 813                         err_entry->data.err_warn_bitmap_lo);
 814                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
 815                         err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 816
 817                 if (xid > BNX2FC_MAX_XID) {
 818                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n", xid);
 819                         goto ret_warn_rqe;
 820                 }
 821
 822                 err_warn_bit_map = (u64)
 823                         ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
 824                         (u64)err_entry->data.err_warn_bitmap_lo;
 825                 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
 826                         if (err_warn_bit_map & (u64) (1 << i)) {
 827                                 err_warn = i;
 828                                 break;
 829                         }
 830                 }
 831                 BNX2FC_TGT_DBG(tgt, "warn = 0x%x\n", err_warn);
 832
 833                 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 834                 index = xid % BNX2FC_TASKS_PER_PAGE;
 835                 task_page = (struct fcoe_task_ctx_entry *)
 836                              interface->hba->task_ctx[task_idx];
 837                 task = &(task_page[index]);
 838                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 839                 if (!io_req)
 840                         goto ret_warn_rqe;
 841
 842                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 843                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 844                         goto ret_warn_rqe;
 845                 }
 846
 847                 memset(&io_req->err_entry, 0,
 848                        sizeof(struct fcoe_err_report_entry));
 849                 memcpy(&io_req->err_entry, err_entry,
 850                        sizeof(struct fcoe_err_report_entry));
 851
 852                 if (err_warn == FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION)
 853                         /* REC_TOV is not a warning code */
 854                         BUG_ON(1);
 855                 else
 856                         BNX2FC_TGT_DBG(tgt, "Unsolicited warning\n");
 857 ret_warn_rqe:
 858                 bnx2fc_return_rqe(tgt, 1);
 859                 spin_unlock_bh(&tgt->tgt_lock);
 860                 break;
 861
 862         default:
 863                 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
 864                 break;
 865         }
 866 }
 867
 868 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
 869 {
 870         struct fcoe_task_ctx_entry *task;
 871         struct fcoe_task_ctx_entry *task_page;
 872         struct fcoe_port *port = tgt->port;
 873         struct bnx2fc_interface *interface = port->priv;
 874         struct bnx2fc_hba *hba = interface->hba;
 875         struct bnx2fc_cmd *io_req;
 876         int task_idx, index;
 877         u16 xid;
 878         u8  cmd_type;
 879         u8 rx_state = 0;
 880         u8 num_rq;
 881
 882         spin_lock_bh(&tgt->tgt_lock);
 883         xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
 884         if (xid >= BNX2FC_MAX_TASKS) {
 885                 printk(KERN_ERR PFX "ERROR:xid out of range\n");
 886                 spin_unlock_bh(&tgt->tgt_lock);
 887                 return;
 888         }
 889         task_idx = xid / BNX2FC_TASKS_PER_PAGE;
 890         index = xid % BNX2FC_TASKS_PER_PAGE;
 891         task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
 892         task = &(task_page[index]);
 893
 894         num_rq = ((task->rxwr_txrd.var_ctx.rx_flags &
 895                    FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE) >>
 896                    FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE_SHIFT);
 897
 898         io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 899
 900         if (io_req == NULL) {
 901                 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
 902                 spin_unlock_bh(&tgt->tgt_lock);
 903                 return;
 904         }
 905
 906         /* Timestamp IO completion time */
 907         cmd_type = io_req->cmd_type;
 908
 909         rx_state = ((task->rxwr_txrd.var_ctx.rx_flags &
 910                     FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE) >>
 911                     FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE_SHIFT);
 912
 913         /* Process other IO completion types */
 914         switch (cmd_type) {
 915         case BNX2FC_SCSI_CMD:
 916                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
 917                         bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
 918                         spin_unlock_bh(&tgt->tgt_lock);
 919                         return;
 920                 }
 921
 922                 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 923                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 924                 else if (rx_state ==
 925                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 926                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 927                 else
 928                         printk(KERN_ERR PFX "Invalid rx state - %d\n",
 929                                 rx_state);
 930                 break;
 931
 932         case BNX2FC_TASK_MGMT_CMD:
 933                 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
 934                 bnx2fc_process_tm_compl(io_req, task, num_rq);
 935                 break;
 936
 937         case BNX2FC_ABTS:
 938                 /*
 939                  * ABTS request received by firmware. ABTS response
 940                  * will be delivered to the task belonging to the IO
 941                  * that was aborted
 942                  */
 943                 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
 944                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 945                 break;
 946
 947         case BNX2FC_ELS:
 948                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED)
 949                         bnx2fc_process_els_compl(io_req, task, num_rq);
 950                 else if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 951                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 952                 else if (rx_state ==
 953                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 954                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 955                 else
 956                         printk(KERN_ERR PFX "Invalid rx state =  %d\n",
 957                                 rx_state);
 958                 break;
 959
 960         case BNX2FC_CLEANUP:
 961                 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
 962                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 963                 break;
 964
 965         case BNX2FC_SEQ_CLEANUP:
 966                 BNX2FC_IO_DBG(io_req, "cq_compl(0x%x) - seq cleanup resp\n",
 967                               io_req->xid);
 968                 bnx2fc_process_seq_cleanup_compl(io_req, task, rx_state);
 969                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 970                 break;
 971
 972         default:
 973                 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
 974                 break;
 975         }
 976         spin_unlock_bh(&tgt->tgt_lock);
 977 }
 978
 979 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt)
 980 {
 981         struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
 982         u32 msg;
 983
 984         wmb();
 985         rx_db->doorbell_cq_cons = tgt->cq_cons_idx | (tgt->cq_curr_toggle_bit <<
 986                         FCOE_CQE_TOGGLE_BIT_SHIFT);
 987         msg = *((u32 *)rx_db);
 988         writel(cpu_to_le32(msg), tgt->ctx_base);
 989         mmiowb();
 990
 991 }
 992
 993 struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
 994 {
 995         struct bnx2fc_work *work;
 996         work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
 997         if (!work)
 998                 return NULL;
 999
1000         INIT_LIST_HEAD(&work->list);
1001         work->tgt = tgt;
1002         work->wqe = wqe;
1003         return work;
1004 }
1005
1006 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
1007 {
1008         struct fcoe_cqe *cq;
1009         u32 cq_cons;
1010         struct fcoe_cqe *cqe;
1011         u32 num_free_sqes = 0;
1012         u16 wqe;
1013
1014         /*
1015          * cq_lock is a low contention lock used to protect
1016          * the CQ data structure from being freed up during
1017          * the upload operation
1018          */
1019         spin_lock_bh(&tgt->cq_lock);
1020
1021         if (!tgt->cq) {
1022                 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
1023                 spin_unlock_bh(&tgt->cq_lock);
1024                 return 0;
1025         }
1026         cq = tgt->cq;
1027         cq_cons = tgt->cq_cons_idx;
1028         cqe = &cq[cq_cons];
1029
1030         while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
1031                (tgt->cq_curr_toggle_bit <<
1032                FCOE_CQE_TOGGLE_BIT_SHIFT)) {
1033
1034                 /* new entry on the cq */
1035                 if (wqe & FCOE_CQE_CQE_TYPE) {
1036                         /* Unsolicited event notification */
1037                         bnx2fc_process_unsol_compl(tgt, wqe);
1038                 } else {
1039                         /* Pending work request completion */
1040                         struct bnx2fc_work *work = NULL;
1041                         struct bnx2fc_percpu_s *fps = NULL;
1042                         unsigned int cpu = wqe % num_possible_cpus();
1043
1044                         fps = &per_cpu(bnx2fc_percpu, cpu);
1045                         spin_lock_bh(&fps->fp_work_lock);
1046                         if (unlikely(!fps->iothread))
1047                                 goto unlock;
1048
1049                         work = bnx2fc_alloc_work(tgt, wqe);
1050                         if (work)
1051                                 list_add_tail(&work->list,
1052                                               &fps->work_list);
1053 unlock:
1054                         spin_unlock_bh(&fps->fp_work_lock);
1055
1056                         /* Pending work request completion */
1057                         if (fps->iothread && work)
1058                                 wake_up_process(fps->iothread);
1059                         else
1060                                 bnx2fc_process_cq_compl(tgt, wqe);
1061                 }
1062                 cqe++;
1063                 tgt->cq_cons_idx++;
1064                 num_free_sqes++;
1065
1066                 if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
1067                         tgt->cq_cons_idx = 0;
1068                         cqe = cq;
1069                         tgt->cq_curr_toggle_bit =
1070                                 1 - tgt->cq_curr_toggle_bit;
1071                 }
1072         }
1073         bnx2fc_arm_cq(tgt);
1074         atomic_add(num_free_sqes, &tgt->free_sqes);
1075         spin_unlock_bh(&tgt->cq_lock);
1076         return 0;
1077 }
1078
1079 /**
1080  * bnx2fc_fastpath_notification - process global event queue (KCQ)
1081  *
1082  * @hba:                adapter structure pointer
1083  * @new_cqe_kcqe:       pointer to newly DMA'd KCQ entry
1084  *
1085  * Fast path event notification handler
1086  */
1087 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
1088                                         struct fcoe_kcqe *new_cqe_kcqe)
1089 {
1090         u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
1091         struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
1092
1093         if (!tgt) {
1094                 printk(KERN_ERR PFX "conn_id 0x%x not valid\n", conn_id);
1095                 return;
1096         }
1097
1098         bnx2fc_process_new_cqes(tgt);
1099 }
1100
1101 /**
1102  * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
1103  *
1104  * @hba:        adapter structure pointer
1105  * @ofld_kcqe:  connection offload kcqe pointer
1106  *
1107  * handle session offload completion, enable the session if offload is
1108  * successful.
1109  */
1110 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
1111                                         struct fcoe_kcqe *ofld_kcqe)
1112 {
1113         struct bnx2fc_rport             *tgt;
1114         struct fcoe_port                *port;
1115         struct bnx2fc_interface         *interface;
1116         u32                             conn_id;
1117         u32                             context_id;
1118         int                             rc;
1119
1120         conn_id = ofld_kcqe->fcoe_conn_id;
1121         context_id = ofld_kcqe->fcoe_conn_context_id;
1122         tgt = hba->tgt_ofld_list[conn_id];
1123         if (!tgt) {
1124                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
1125                 return;
1126         }
1127         BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
1128                 ofld_kcqe->fcoe_conn_context_id);
1129         port = tgt->port;
1130         interface = tgt->port->priv;
1131         if (hba != interface->hba) {
1132                 printk(KERN_ERR PFX "ERROR:ofld_cmpl: HBA mis-match\n");
1133                 goto ofld_cmpl_err;
1134         }
1135         /*
1136          * cnic has allocated a context_id for this session; use this
1137          * while enabling the session.
1138          */
1139         tgt->context_id = context_id;
1140         if (ofld_kcqe->completion_status) {
1141                 if (ofld_kcqe->completion_status ==
1142                                 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
1143                         printk(KERN_ERR PFX "unable to allocate FCoE context "
1144                                 "resources\n");
1145                         set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
1146                 }
1147                 goto ofld_cmpl_err;
1148         } else {
1149
1150                 /* now enable the session */
1151                 rc = bnx2fc_send_session_enable_req(port, tgt);
1152                 if (rc) {
1153                         printk(KERN_ERR PFX "enable session failed\n");
1154                         goto ofld_cmpl_err;
1155                 }
1156         }
1157         return;
1158 ofld_cmpl_err:
1159         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1160         wake_up_interruptible(&tgt->ofld_wait);
1161 }
1162
1163 /**
1164  * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1165  *
1166  * @hba:        adapter structure pointer
1167  * @ofld_kcqe:  connection offload kcqe pointer
1168  *
1169  * handle session enable completion, mark the rport as ready
1170  */
1171
1172 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1173                                                 struct fcoe_kcqe *ofld_kcqe)
1174 {
1175         struct bnx2fc_rport             *tgt;
1176         struct bnx2fc_interface         *interface;
1177         u32                             conn_id;
1178         u32                             context_id;
1179
1180         context_id = ofld_kcqe->fcoe_conn_context_id;
1181         conn_id = ofld_kcqe->fcoe_conn_id;
1182         tgt = hba->tgt_ofld_list[conn_id];
1183         if (!tgt) {
1184                 printk(KERN_ERR PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1185                 return;
1186         }
1187
1188         BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1189                 ofld_kcqe->fcoe_conn_context_id);
1190
1191         /*
1192          * context_id should be the same for this target during offload
1193          * and enable
1194          */
1195         if (tgt->context_id != context_id) {
1196                 printk(KERN_ERR PFX "context id mis-match\n");
1197                 return;
1198         }
1199         interface = tgt->port->priv;
1200         if (hba != interface->hba) {
1201                 printk(KERN_ERR PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1202                 goto enbl_cmpl_err;
1203         }
1204         if (ofld_kcqe->completion_status)
1205                 goto enbl_cmpl_err;
1206         else {
1207                 /* enable successful - rport ready for issuing IOs */
1208                 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1209                 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1210                 wake_up_interruptible(&tgt->ofld_wait);
1211         }
1212         return;
1213
1214 enbl_cmpl_err:
1215         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1216         wake_up_interruptible(&tgt->ofld_wait);
1217 }
1218
1219 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1220                                         struct fcoe_kcqe *disable_kcqe)
1221 {
1222
1223         struct bnx2fc_rport             *tgt;
1224         u32                             conn_id;
1225
1226         conn_id = disable_kcqe->fcoe_conn_id;
1227         tgt = hba->tgt_ofld_list[conn_id];
1228         if (!tgt) {
1229                 printk(KERN_ERR PFX "ERROR: disable_cmpl: No disable req\n");
1230                 return;
1231         }
1232
1233         BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1234
1235         if (disable_kcqe->completion_status) {
1236                 printk(KERN_ERR PFX "Disable failed with cmpl status %d\n",
1237                         disable_kcqe->completion_status);
1238                 return;
1239         } else {
1240                 /* disable successful */
1241                 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1242                 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1243                 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1244                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1245                 wake_up_interruptible(&tgt->upld_wait);
1246         }
1247 }
1248
1249 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1250                                         struct fcoe_kcqe *destroy_kcqe)
1251 {
1252         struct bnx2fc_rport             *tgt;
1253         u32                             conn_id;
1254
1255         conn_id = destroy_kcqe->fcoe_conn_id;
1256         tgt = hba->tgt_ofld_list[conn_id];
1257         if (!tgt) {
1258                 printk(KERN_ERR PFX "destroy_cmpl: No destroy req\n");
1259                 return;
1260         }
1261
1262         BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1263
1264         if (destroy_kcqe->completion_status) {
1265                 printk(KERN_ERR PFX "Destroy conn failed, cmpl status %d\n",
1266                         destroy_kcqe->completion_status);
1267                 return;
1268         } else {
1269                 /* destroy successful */
1270                 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1271                 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1272                 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1273                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1274                 wake_up_interruptible(&tgt->upld_wait);
1275         }
1276 }
1277
1278 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1279 {
1280         switch (err_code) {
1281         case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1282                 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1283                 break;
1284
1285         case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1286                 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1287                 break;
1288
1289         case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1290                 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1291                 break;
1292         case FCOE_KCQE_COMPLETION_STATUS_ERROR:
1293                 printk(KERN_ERR PFX "init failure due to compl status err\n");
1294                 break;
1295         case FCOE_KCQE_COMPLETION_STATUS_WRONG_HSI_VERSION:
1296                 printk(KERN_ERR PFX "init failure due to HSI mismatch\n");
1297                 break;
1298         default:
1299                 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1300         }
1301 }
1302
1303 /**
1304  * bnx2fc_indicae_kcqe - process KCQE
1305  *
1306  * @hba:        adapter structure pointer
1307  * @kcqe:       kcqe pointer
1308  * @num_cqe:    Number of completion queue elements
1309  *
1310  * Generic KCQ event handler
1311  */
1312 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1313                                         u32 num_cqe)
1314 {
1315         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1316         int i = 0;
1317         struct fcoe_kcqe *kcqe = NULL;
1318
1319         while (i < num_cqe) {
1320                 kcqe = (struct fcoe_kcqe *) kcq[i++];
1321
1322                 switch (kcqe->op_code) {
1323                 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1324                         bnx2fc_fastpath_notification(hba, kcqe);
1325                         break;
1326
1327                 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1328                         bnx2fc_process_ofld_cmpl(hba, kcqe);
1329                         break;
1330
1331                 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1332                         bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1333                         break;
1334
1335                 case FCOE_KCQE_OPCODE_INIT_FUNC:
1336                         if (kcqe->completion_status !=
1337                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1338                                 bnx2fc_init_failure(hba,
1339                                                 kcqe->completion_status);
1340                         } else {
1341                                 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1342                                 bnx2fc_get_link_state(hba);
1343                                 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1344                                         (u8)hba->pcidev->bus->number);
1345                         }
1346                         break;
1347
1348                 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1349                         if (kcqe->completion_status !=
1350                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1351
1352                                 printk(KERN_ERR PFX "DESTROY failed\n");
1353                         } else {
1354                                 printk(KERN_ERR PFX "DESTROY success\n");
1355                         }
1356                         set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1357                         wake_up_interruptible(&hba->destroy_wait);
1358                         break;
1359
1360                 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1361                         bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1362                         break;
1363
1364                 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1365                         bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1366                         break;
1367
1368                 case FCOE_KCQE_OPCODE_STAT_FUNC:
1369                         if (kcqe->completion_status !=
1370                             FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1371                                 printk(KERN_ERR PFX "STAT failed\n");
1372                         complete(&hba->stat_req_done);
1373                         break;
1374
1375                 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1376                         /* fall thru */
1377                 default:
1378                         printk(KERN_ERR PFX "unknown opcode 0x%x\n",
1379                                                                 kcqe->op_code);
1380                 }
1381         }
1382 }
1383
1384 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1385 {
1386         struct fcoe_sqe *sqe;
1387
1388         sqe = &tgt->sq[tgt->sq_prod_idx];
1389
1390         /* Fill SQ WQE */
1391         sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1392         sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1393
1394         /* Advance SQ Prod Idx */
1395         if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1396                 tgt->sq_prod_idx = 0;
1397                 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1398         }
1399 }
1400
1401 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1402 {
1403         struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
1404         u32 msg;
1405
1406         wmb();
1407         sq_db->prod = tgt->sq_prod_idx |
1408                                 (tgt->sq_curr_toggle_bit << 15);
1409         msg = *((u32 *)sq_db);
1410         writel(cpu_to_le32(msg), tgt->ctx_base);
1411         mmiowb();
1412
1413 }
1414
1415 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1416 {
1417         u32 context_id = tgt->context_id;
1418         struct fcoe_port *port = tgt->port;
1419         u32 reg_off;
1420         resource_size_t reg_base;
1421         struct bnx2fc_interface *interface = port->priv;
1422         struct bnx2fc_hba *hba = interface->hba;
1423
1424         reg_base = pci_resource_start(hba->pcidev,
1425                                         BNX2X_DOORBELL_PCI_BAR);
1426         reg_off = BNX2FC_5771X_DB_PAGE_SIZE *
1427                         (context_id & 0x1FFFF) + DPM_TRIGER_TYPE;
1428         tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
1429         if (!tgt->ctx_base)
1430                 return -ENOMEM;
1431         return 0;
1432 }
1433
1434 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1435 {
1436         char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1437
1438         if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1439                 return NULL;
1440
1441         tgt->rq_cons_idx += num_items;
1442
1443         if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1444                 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1445
1446         return buf;
1447 }
1448
1449 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1450 {
1451         /* return the rq buffer */
1452         u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1453         if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1454                 /* Wrap around RQ */
1455                 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1456         }
1457         tgt->rq_prod_idx = next_prod_idx;
1458         tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1459 }
1460
1461 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnp_req,
1462                                   struct fcoe_task_ctx_entry *task,
1463                                   struct bnx2fc_cmd *orig_io_req,
1464                                   u32 offset)
1465 {
1466         struct scsi_cmnd *sc_cmd = orig_io_req->sc_cmd;
1467         struct bnx2fc_rport *tgt = seq_clnp_req->tgt;
1468         struct bnx2fc_interface *interface = tgt->port->priv;
1469         struct fcoe_bd_ctx *bd = orig_io_req->bd_tbl->bd_tbl;
1470         struct fcoe_task_ctx_entry *orig_task;
1471         struct fcoe_task_ctx_entry *task_page;
1472         struct fcoe_ext_mul_sges_ctx *sgl;
1473         u8 task_type = FCOE_TASK_TYPE_SEQUENCE_CLEANUP;
1474         u8 orig_task_type;
1475         u16 orig_xid = orig_io_req->xid;
1476         u32 context_id = tgt->context_id;
1477         u64 phys_addr = (u64)orig_io_req->bd_tbl->bd_tbl_dma;
1478         u32 orig_offset = offset;
1479         int bd_count;
1480         int orig_task_idx, index;
1481         int i;
1482
1483         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1484
1485         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1486                 orig_task_type = FCOE_TASK_TYPE_WRITE;
1487         else
1488                 orig_task_type = FCOE_TASK_TYPE_READ;
1489
1490         /* Tx flags */
1491         task->txwr_rxrd.const_ctx.tx_flags =
1492                                 FCOE_TASK_TX_STATE_SEQUENCE_CLEANUP <<
1493                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1494         /* init flags */
1495         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1496                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1497         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1498                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1499         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1500                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1501         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1502                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1503
1504         task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1505
1506         task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_seq_cnt = 0;
1507         task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_data_offset = offset;
1508
1509         bd_count = orig_io_req->bd_tbl->bd_valid;
1510
1511         /* obtain the appropriate bd entry from relative offset */
1512         for (i = 0; i < bd_count; i++) {
1513                 if (offset < bd[i].buf_len)
1514                         break;
1515                 offset -= bd[i].buf_len;
1516         }
1517         phys_addr += (i * sizeof(struct fcoe_bd_ctx));
1518
1519         if (orig_task_type == FCOE_TASK_TYPE_WRITE) {
1520                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1521                                 (u32)phys_addr;
1522                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1523                                 (u32)((u64)phys_addr >> 32);
1524                 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1525                                 bd_count;
1526                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_off =
1527                                 offset; /* adjusted offset */
1528                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_idx = i;
1529         } else {
1530                 orig_task_idx = orig_xid / BNX2FC_TASKS_PER_PAGE;
1531                 index = orig_xid % BNX2FC_TASKS_PER_PAGE;
1532
1533                 task_page = (struct fcoe_task_ctx_entry *)
1534                              interface->hba->task_ctx[orig_task_idx];
1535                 orig_task = &(task_page[index]);
1536
1537                 /* Multiple SGEs were used for this IO */
1538                 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1539                 sgl->mul_sgl.cur_sge_addr.lo = (u32)phys_addr;
1540                 sgl->mul_sgl.cur_sge_addr.hi = (u32)((u64)phys_addr >> 32);
1541                 sgl->mul_sgl.sgl_size = bd_count;
1542                 sgl->mul_sgl.cur_sge_off = offset; /*adjusted offset */
1543                 sgl->mul_sgl.cur_sge_idx = i;
1544
1545                 memset(&task->rxwr_only.rx_seq_ctx, 0,
1546                        sizeof(struct fcoe_rx_seq_ctx));
1547                 task->rxwr_only.rx_seq_ctx.low_exp_ro = orig_offset;
1548                 task->rxwr_only.rx_seq_ctx.high_exp_ro = orig_offset;
1549         }
1550 }
1551 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1552                               struct fcoe_task_ctx_entry *task,
1553                               u16 orig_xid)
1554 {
1555         u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1556         struct bnx2fc_rport *tgt = io_req->tgt;
1557         u32 context_id = tgt->context_id;
1558
1559         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1560
1561         /* Tx Write Rx Read */
1562         /* init flags */
1563         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1564                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1565         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1566                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1567         task->txwr_rxrd.const_ctx.init_flags |=
1568                                 FCOE_TASK_DEV_TYPE_DISK <<
1569                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1570         task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1571
1572         /* Tx flags */
1573         task->txwr_rxrd.const_ctx.tx_flags =
1574                                 FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1575                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1576
1577         /* Rx Read Tx Write */
1578         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1579                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1580         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1581                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1582 }
1583
1584 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1585                                 struct fcoe_task_ctx_entry *task)
1586 {
1587         struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1588         struct bnx2fc_rport *tgt = io_req->tgt;
1589         struct fc_frame_header *fc_hdr;
1590         struct fcoe_ext_mul_sges_ctx *sgl;
1591         u8 task_type = 0;
1592         u64 *hdr;
1593         u64 temp_hdr[3];
1594         u32 context_id;
1595
1596
1597         /* Obtain task_type */
1598         if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1599             (io_req->cmd_type == BNX2FC_ELS)) {
1600                 task_type = FCOE_TASK_TYPE_MIDPATH;
1601         } else if (io_req->cmd_type == BNX2FC_ABTS) {
1602                 task_type = FCOE_TASK_TYPE_ABTS;
1603         }
1604
1605         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1606
1607         /* Setup the task from io_req for easy reference */
1608         io_req->task = task;
1609
1610         BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1611                 io_req->cmd_type, task_type);
1612
1613         /* Tx only */
1614         if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1615             (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1616                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1617                                 (u32)mp_req->mp_req_bd_dma;
1618                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1619                                 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1620                 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size = 1;
1621         }
1622
1623         /* Tx Write Rx Read */
1624         /* init flags */
1625         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1626                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1627         task->txwr_rxrd.const_ctx.init_flags |=
1628                                 FCOE_TASK_DEV_TYPE_DISK <<
1629                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1630         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1631                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1632
1633         /* tx flags */
1634         task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1635                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1636
1637         /* Rx Write Tx Read */
1638         task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1639
1640         /* rx flags */
1641         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1642                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1643
1644         context_id = tgt->context_id;
1645         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1646                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1647
1648         fc_hdr = &(mp_req->req_fc_hdr);
1649         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1650                 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1651                 fc_hdr->fh_rx_id = htons(0xffff);
1652                 task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1653         } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1654                 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1655         }
1656
1657         /* Fill FC Header into middle path buffer */
1658         hdr = (u64 *) &task->txwr_rxrd.union_ctx.tx_frame.fc_hdr;
1659         memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1660         hdr[0] = cpu_to_be64(temp_hdr[0]);
1661         hdr[1] = cpu_to_be64(temp_hdr[1]);
1662         hdr[2] = cpu_to_be64(temp_hdr[2]);
1663
1664         /* Rx Only */
1665         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1666                 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1667
1668                 sgl->mul_sgl.cur_sge_addr.lo = (u32)mp_req->mp_resp_bd_dma;
1669                 sgl->mul_sgl.cur_sge_addr.hi =
1670                                 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1671                 sgl->mul_sgl.sgl_size = 1;
1672         }
1673 }
1674
1675 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1676                              struct fcoe_task_ctx_entry *task)
1677 {
1678         u8 task_type;
1679         struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1680         struct io_bdt *bd_tbl = io_req->bd_tbl;
1681         struct bnx2fc_rport *tgt = io_req->tgt;
1682         struct fcoe_cached_sge_ctx *cached_sge;
1683         struct fcoe_ext_mul_sges_ctx *sgl;
1684         u64 *fcp_cmnd;
1685         u64 tmp_fcp_cmnd[4];
1686         u32 context_id;
1687         int cnt, i;
1688         int bd_count;
1689
1690         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1691
1692         /* Setup the task from io_req for easy reference */
1693         io_req->task = task;
1694
1695         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1696                 task_type = FCOE_TASK_TYPE_WRITE;
1697         else
1698                 task_type = FCOE_TASK_TYPE_READ;
1699
1700         /* Tx only */
1701         if (task_type == FCOE_TASK_TYPE_WRITE) {
1702                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1703                                 (u32)bd_tbl->bd_tbl_dma;
1704                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1705                                 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1706                 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1707                                 bd_tbl->bd_valid;
1708         }
1709
1710         /*Tx Write Rx Read */
1711         /* Init state to NORMAL */
1712         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1713                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1714         task->txwr_rxrd.const_ctx.init_flags |=
1715                                 FCOE_TASK_DEV_TYPE_DISK <<
1716                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1717         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1718                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1719         /* tx flags */
1720         task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1721                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1722
1723         /* Set initial seq counter */
1724         task->txwr_rxrd.union_ctx.tx_seq.ctx.seq_cnt = 1;
1725
1726         /* Fill FCP_CMND IU */
1727         fcp_cmnd = (u64 *)
1728                     task->txwr_rxrd.union_ctx.fcp_cmd.opaque;
1729         bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1730
1731         /* swap fcp_cmnd */
1732         cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1733
1734         for (i = 0; i < cnt; i++) {
1735                 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1736                 fcp_cmnd++;
1737         }
1738
1739         /* Rx Write Tx Read */
1740         task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1741
1742         context_id = tgt->context_id;
1743         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1744                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1745
1746         /* rx flags */
1747         /* Set state to "waiting for the first packet" */
1748         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1749                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1750
1751         task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1752
1753         /* Rx Only */
1754         cached_sge = &task->rxwr_only.union_ctx.read_info.sgl_ctx.cached_sge;
1755         sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1756         bd_count = bd_tbl->bd_valid;
1757         if (task_type == FCOE_TASK_TYPE_READ) {
1758                 if (bd_count == 1) {
1759
1760                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1761
1762                         cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1763                         cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1764                         cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1765                         task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1766                                 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1767                 } else if (bd_count == 2) {
1768                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1769
1770                         cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1771                         cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1772                         cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1773
1774                         fcoe_bd_tbl++;
1775                         cached_sge->second_buf_addr.lo =
1776                                                  fcoe_bd_tbl->buf_addr_lo;
1777                         cached_sge->second_buf_addr.hi =
1778                                                 fcoe_bd_tbl->buf_addr_hi;
1779                         cached_sge->second_buf_rem = fcoe_bd_tbl->buf_len;
1780                         task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1781                                 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1782                 } else {
1783
1784                         sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1785                         sgl->mul_sgl.cur_sge_addr.hi =
1786                                         (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1787                         sgl->mul_sgl.sgl_size = bd_count;
1788                 }
1789         }
1790 }
1791
1792 /**
1793  * bnx2fc_setup_task_ctx - allocate and map task context
1794  *
1795  * @hba:        pointer to adapter structure
1796  *
1797  * allocate memory for task context, and associated BD table to be used
1798  * by firmware
1799  *
1800  */
1801 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1802 {
1803         int rc = 0;
1804         struct regpair *task_ctx_bdt;
1805         dma_addr_t addr;
1806         int i;
1807
1808         /*
1809          * Allocate task context bd table. A page size of bd table
1810          * can map 256 buffers. Each buffer contains 32 task context
1811          * entries. Hence the limit with one page is 8192 task context
1812          * entries.
1813          */
1814         hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1815                                                   PAGE_SIZE,
1816                                                   &hba->task_ctx_bd_dma,
1817                                                   GFP_KERNEL);
1818         if (!hba->task_ctx_bd_tbl) {
1819                 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1820                 rc = -1;
1821                 goto out;
1822         }
1823         memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
1824
1825         /*
1826          * Allocate task_ctx which is an array of pointers pointing to
1827          * a page containing 32 task contexts
1828          */
1829         hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
1830                                  GFP_KERNEL);
1831         if (!hba->task_ctx) {
1832                 printk(KERN_ERR PFX "unable to allocate task context array\n");
1833                 rc = -1;
1834                 goto out1;
1835         }
1836
1837         /*
1838          * Allocate task_ctx_dma which is an array of dma addresses
1839          */
1840         hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
1841                                         sizeof(dma_addr_t)), GFP_KERNEL);
1842         if (!hba->task_ctx_dma) {
1843                 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1844                 rc = -1;
1845                 goto out2;
1846         }
1847
1848         task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1849         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1850
1851                 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1852                                                       PAGE_SIZE,
1853                                                       &hba->task_ctx_dma[i],
1854                                                       GFP_KERNEL);
1855                 if (!hba->task_ctx[i]) {
1856                         printk(KERN_ERR PFX "unable to alloc task context\n");
1857                         rc = -1;
1858                         goto out3;
1859                 }
1860                 memset(hba->task_ctx[i], 0, PAGE_SIZE);
1861                 addr = (u64)hba->task_ctx_dma[i];
1862                 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1863                 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1864                 task_ctx_bdt++;
1865         }
1866         return 0;
1867
1868 out3:
1869         for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1870                 if (hba->task_ctx[i]) {
1871
1872                         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1873                                 hba->task_ctx[i], hba->task_ctx_dma[i]);
1874                         hba->task_ctx[i] = NULL;
1875                 }
1876         }
1877
1878         kfree(hba->task_ctx_dma);
1879         hba->task_ctx_dma = NULL;
1880 out2:
1881         kfree(hba->task_ctx);
1882         hba->task_ctx = NULL;
1883 out1:
1884         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1885                         hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1886         hba->task_ctx_bd_tbl = NULL;
1887 out:
1888         return rc;
1889 }
1890
1891 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1892 {
1893         int i;
1894
1895         if (hba->task_ctx_bd_tbl) {
1896                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1897                                     hba->task_ctx_bd_tbl,
1898                                     hba->task_ctx_bd_dma);
1899                 hba->task_ctx_bd_tbl = NULL;
1900         }
1901
1902         if (hba->task_ctx) {
1903                 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1904                         if (hba->task_ctx[i]) {
1905                                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1906                                                     hba->task_ctx[i],
1907                                                     hba->task_ctx_dma[i]);
1908                                 hba->task_ctx[i] = NULL;
1909                         }
1910                 }
1911                 kfree(hba->task_ctx);
1912                 hba->task_ctx = NULL;
1913         }
1914
1915         kfree(hba->task_ctx_dma);
1916         hba->task_ctx_dma = NULL;
1917 }
1918
1919 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1920 {
1921         int i;
1922         int segment_count;
1923         int hash_table_size;
1924         u32 *pbl;
1925
1926         segment_count = hba->hash_tbl_segment_count;
1927         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1928                 sizeof(struct fcoe_hash_table_entry);
1929
1930         pbl = hba->hash_tbl_pbl;
1931         for (i = 0; i < segment_count; ++i) {
1932                 dma_addr_t dma_address;
1933
1934                 dma_address = le32_to_cpu(*pbl);
1935                 ++pbl;
1936                 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
1937                 ++pbl;
1938                 dma_free_coherent(&hba->pcidev->dev,
1939                                   BNX2FC_HASH_TBL_CHUNK_SIZE,
1940                                   hba->hash_tbl_segments[i],
1941                                   dma_address);
1942
1943         }
1944
1945         if (hba->hash_tbl_pbl) {
1946                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1947                                     hba->hash_tbl_pbl,
1948                                     hba->hash_tbl_pbl_dma);
1949                 hba->hash_tbl_pbl = NULL;
1950         }
1951 }
1952
1953 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
1954 {
1955         int i;
1956         int hash_table_size;
1957         int segment_count;
1958         int segment_array_size;
1959         int dma_segment_array_size;
1960         dma_addr_t *dma_segment_array;
1961         u32 *pbl;
1962
1963         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1964                 sizeof(struct fcoe_hash_table_entry);
1965
1966         segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
1967         segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
1968         hba->hash_tbl_segment_count = segment_count;
1969
1970         segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
1971         hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
1972         if (!hba->hash_tbl_segments) {
1973                 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
1974                 return -ENOMEM;
1975         }
1976         dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
1977         dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
1978         if (!dma_segment_array) {
1979                 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
1980                 return -ENOMEM;
1981         }
1982
1983         for (i = 0; i < segment_count; ++i) {
1984                 hba->hash_tbl_segments[i] =
1985                         dma_alloc_coherent(&hba->pcidev->dev,
1986                                            BNX2FC_HASH_TBL_CHUNK_SIZE,
1987                                            &dma_segment_array[i],
1988                                            GFP_KERNEL);
1989                 if (!hba->hash_tbl_segments[i]) {
1990                         printk(KERN_ERR PFX "hash segment alloc failed\n");
1991                         while (--i >= 0) {
1992                                 dma_free_coherent(&hba->pcidev->dev,
1993                                                     BNX2FC_HASH_TBL_CHUNK_SIZE,
1994                                                     hba->hash_tbl_segments[i],
1995                                                     dma_segment_array[i]);
1996                                 hba->hash_tbl_segments[i] = NULL;
1997                         }
1998                         kfree(dma_segment_array);
1999                         return -ENOMEM;
2000                 }
2001                 memset(hba->hash_tbl_segments[i], 0,
2002                        BNX2FC_HASH_TBL_CHUNK_SIZE);
2003         }
2004
2005         hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
2006                                                PAGE_SIZE,
2007                                                &hba->hash_tbl_pbl_dma,
2008                                                GFP_KERNEL);
2009         if (!hba->hash_tbl_pbl) {
2010                 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
2011                 kfree(dma_segment_array);
2012                 return -ENOMEM;
2013         }
2014         memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
2015
2016         pbl = hba->hash_tbl_pbl;
2017         for (i = 0; i < segment_count; ++i) {
2018                 u64 paddr = dma_segment_array[i];
2019                 *pbl = cpu_to_le32((u32) paddr);
2020                 ++pbl;
2021                 *pbl = cpu_to_le32((u32) (paddr >> 32));
2022                 ++pbl;
2023         }
2024         pbl = hba->hash_tbl_pbl;
2025         i = 0;
2026         while (*pbl && *(pbl + 1)) {
2027                 u32 lo;
2028                 u32 hi;
2029                 lo = *pbl;
2030                 ++pbl;
2031                 hi = *pbl;
2032                 ++pbl;
2033                 ++i;
2034         }
2035         kfree(dma_segment_array);
2036         return 0;
2037 }
2038
2039 /**
2040  * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
2041  *
2042  * @hba:        Pointer to adapter structure
2043  *
2044  */
2045 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
2046 {
2047         u64 addr;
2048         u32 mem_size;
2049         int i;
2050
2051         if (bnx2fc_allocate_hash_table(hba))
2052                 return -ENOMEM;
2053
2054         mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2055         hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2056                                                   &hba->t2_hash_tbl_ptr_dma,
2057                                                   GFP_KERNEL);
2058         if (!hba->t2_hash_tbl_ptr) {
2059                 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
2060                 bnx2fc_free_fw_resc(hba);
2061                 return -ENOMEM;
2062         }
2063         memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
2064
2065         mem_size = BNX2FC_NUM_MAX_SESS *
2066                                 sizeof(struct fcoe_t2_hash_table_entry);
2067         hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2068                                               &hba->t2_hash_tbl_dma,
2069                                               GFP_KERNEL);
2070         if (!hba->t2_hash_tbl) {
2071                 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
2072                 bnx2fc_free_fw_resc(hba);
2073                 return -ENOMEM;
2074         }
2075         memset(hba->t2_hash_tbl, 0x00, mem_size);
2076         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
2077                 addr = (unsigned long) hba->t2_hash_tbl_dma +
2078                          ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
2079                 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
2080                 hba->t2_hash_tbl[i].next.hi = addr >> 32;
2081         }
2082
2083         hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
2084                                                PAGE_SIZE, &hba->dummy_buf_dma,
2085                                                GFP_KERNEL);
2086         if (!hba->dummy_buffer) {
2087                 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
2088                 bnx2fc_free_fw_resc(hba);
2089                 return -ENOMEM;
2090         }
2091
2092         hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
2093                                                PAGE_SIZE,
2094                                                &hba->stats_buf_dma,
2095                                                GFP_KERNEL);
2096         if (!hba->stats_buffer) {
2097                 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
2098                 bnx2fc_free_fw_resc(hba);
2099                 return -ENOMEM;
2100         }
2101         memset(hba->stats_buffer, 0x00, PAGE_SIZE);
2102
2103         return 0;
2104 }
2105
2106 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
2107 {
2108         u32 mem_size;
2109
2110         if (hba->stats_buffer) {
2111                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2112                                   hba->stats_buffer, hba->stats_buf_dma);
2113                 hba->stats_buffer = NULL;
2114         }
2115
2116         if (hba->dummy_buffer) {
2117                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2118                                   hba->dummy_buffer, hba->dummy_buf_dma);
2119                 hba->dummy_buffer = NULL;
2120         }
2121
2122         if (hba->t2_hash_tbl_ptr) {
2123                 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2124                 dma_free_coherent(&hba->pcidev->dev, mem_size,
2125                                     hba->t2_hash_tbl_ptr,
2126                                     hba->t2_hash_tbl_ptr_dma);
2127                 hba->t2_hash_tbl_ptr = NULL;
2128         }
2129
2130         if (hba->t2_hash_tbl) {
2131                 mem_size = BNX2FC_NUM_MAX_SESS *
2132                             sizeof(struct fcoe_t2_hash_table_entry);
2133                 dma_free_coherent(&hba->pcidev->dev, mem_size,
2134                                     hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
2135                 hba->t2_hash_tbl = NULL;
2136         }
2137         bnx2fc_free_hash_table(hba);
2138 }