drivers/scsi/bnx2fc/bnx2fc_hwi.c

   1 /* bnx2fc_hwi.c: QLogic 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) 2008-2013 Broadcom Corporation
   6  * Copyright (c) 2014-2016 QLogic Corporation
   7  * Copyright (c) 2016-2017 Cavium Inc.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation.
  12  *
  13  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
  14  */
  15
  16 #include "bnx2fc.h"
  17
  18 DECLARE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  19
  20 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
  21                                         struct fcoe_kcqe *new_cqe_kcqe);
  22 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
  23                                         struct fcoe_kcqe *ofld_kcqe);
  24 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
  25                                                 struct fcoe_kcqe *ofld_kcqe);
  26 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code);
  27 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
  28                                         struct fcoe_kcqe *destroy_kcqe);
  29
  30 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba)
  31 {
  32         struct fcoe_kwqe_stat stat_req;
  33         struct kwqe *kwqe_arr[2];
  34         int num_kwqes = 1;
  35         int rc = 0;
  36
  37         memset(&stat_req, 0x00, sizeof(struct fcoe_kwqe_stat));
  38         stat_req.hdr.op_code = FCOE_KWQE_OPCODE_STAT;
  39         stat_req.hdr.flags =
  40                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  41
  42         stat_req.stat_params_addr_lo = (u32) hba->stats_buf_dma;
  43         stat_req.stat_params_addr_hi = (u32) ((u64)hba->stats_buf_dma >> 32);
  44
  45         kwqe_arr[0] = (struct kwqe *) &stat_req;
  46
  47         if (hba->cnic && hba->cnic->submit_kwqes)
  48                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
  49
  50         return rc;
  51 }
  52
  53 /**
  54  * bnx2fc_send_fw_fcoe_init_msg - initiates initial handshake with FCoE f/w
  55  *
  56  * @hba:        adapter structure pointer
  57  *
  58  * Send down FCoE firmware init KWQEs which initiates the initial handshake
  59  *      with the f/w.
  60  *
  61  */
  62 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba)
  63 {
  64         struct fcoe_kwqe_init1 fcoe_init1;
  65         struct fcoe_kwqe_init2 fcoe_init2;
  66         struct fcoe_kwqe_init3 fcoe_init3;
  67         struct kwqe *kwqe_arr[3];
  68         int num_kwqes = 3;
  69         int rc = 0;
  70
  71         if (!hba->cnic) {
  72                 printk(KERN_ERR PFX "hba->cnic NULL during fcoe fw init\n");
  73                 return -ENODEV;
  74         }
  75
  76         /* fill init1 KWQE */
  77         memset(&fcoe_init1, 0x00, sizeof(struct fcoe_kwqe_init1));
  78         fcoe_init1.hdr.op_code = FCOE_KWQE_OPCODE_INIT1;
  79         fcoe_init1.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
  80                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
  81
  82         fcoe_init1.num_tasks = hba->max_tasks;
  83         fcoe_init1.sq_num_wqes = BNX2FC_SQ_WQES_MAX;
  84         fcoe_init1.rq_num_wqes = BNX2FC_RQ_WQES_MAX;
  85         fcoe_init1.rq_buffer_log_size = BNX2FC_RQ_BUF_LOG_SZ;
  86         fcoe_init1.cq_num_wqes = BNX2FC_CQ_WQES_MAX;
  87         fcoe_init1.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
  88         fcoe_init1.dummy_buffer_addr_hi = (u32) ((u64)hba->dummy_buf_dma >> 32);
  89         fcoe_init1.task_list_pbl_addr_lo = (u32) hba->task_ctx_bd_dma;
  90         fcoe_init1.task_list_pbl_addr_hi =
  91                                 (u32) ((u64) hba->task_ctx_bd_dma >> 32);
  92         fcoe_init1.mtu = BNX2FC_MINI_JUMBO_MTU;
  93
  94         fcoe_init1.flags = (PAGE_SHIFT <<
  95                                 FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT);
  96
  97         fcoe_init1.num_sessions_log = BNX2FC_NUM_MAX_SESS_LOG;
  98
  99         /* fill init2 KWQE */
 100         memset(&fcoe_init2, 0x00, sizeof(struct fcoe_kwqe_init2));
 101         fcoe_init2.hdr.op_code = FCOE_KWQE_OPCODE_INIT2;
 102         fcoe_init2.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 103                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 104
 105         fcoe_init2.hsi_major_version = FCOE_HSI_MAJOR_VERSION;
 106         fcoe_init2.hsi_minor_version = FCOE_HSI_MINOR_VERSION;
 107
 108
 109         fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
 110         fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
 111                                            ((u64) hba->hash_tbl_pbl_dma >> 32);
 112
 113         fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
 114         fcoe_init2.t2_hash_tbl_addr_hi = (u32)
 115                                           ((u64) hba->t2_hash_tbl_dma >> 32);
 116
 117         fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
 118         fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
 119                                         ((u64) hba->t2_hash_tbl_ptr_dma >> 32);
 120
 121         fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
 122
 123         /* fill init3 KWQE */
 124         memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
 125         fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
 126         fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 127                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 128         fcoe_init3.error_bit_map_lo = 0xffffffff;
 129         fcoe_init3.error_bit_map_hi = 0xffffffff;
 130
 131         /*
 132          * enable both cached connection and cached tasks
 133          * 0 = none, 1 = cached connection, 2 = cached tasks, 3 = both
 134          */
 135         fcoe_init3.perf_config = 3;
 136
 137         kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
 138         kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
 139         kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
 140
 141         if (hba->cnic && hba->cnic->submit_kwqes)
 142                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 143
 144         return rc;
 145 }
 146 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
 147 {
 148         struct fcoe_kwqe_destroy fcoe_destroy;
 149         struct kwqe *kwqe_arr[2];
 150         int num_kwqes = 1;
 151         int rc = -1;
 152
 153         /* fill destroy KWQE */
 154         memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
 155         fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
 156         fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 157                                         FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 158         kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
 159
 160         if (hba->cnic && hba->cnic->submit_kwqes)
 161                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 162         return rc;
 163 }
 164
 165 /**
 166  * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
 167  *
 168  * @port:               port structure pointer
 169  * @tgt:                bnx2fc_rport structure pointer
 170  */
 171 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
 172                                         struct bnx2fc_rport *tgt)
 173 {
 174         struct fc_lport *lport = port->lport;
 175         struct bnx2fc_interface *interface = port->priv;
 176         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
 177         struct bnx2fc_hba *hba = interface->hba;
 178         struct kwqe *kwqe_arr[4];
 179         struct fcoe_kwqe_conn_offload1 ofld_req1;
 180         struct fcoe_kwqe_conn_offload2 ofld_req2;
 181         struct fcoe_kwqe_conn_offload3 ofld_req3;
 182         struct fcoe_kwqe_conn_offload4 ofld_req4;
 183         struct fc_rport_priv *rdata = tgt->rdata;
 184         struct fc_rport *rport = tgt->rport;
 185         int num_kwqes = 4;
 186         u32 port_id;
 187         int rc = 0;
 188         u16 conn_id;
 189
 190         /* Initialize offload request 1 structure */
 191         memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
 192
 193         ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
 194         ofld_req1.hdr.flags =
 195                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 196
 197
 198         conn_id = (u16)tgt->fcoe_conn_id;
 199         ofld_req1.fcoe_conn_id = conn_id;
 200
 201
 202         ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
 203         ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
 204
 205         ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
 206         ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
 207
 208         ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
 209         ofld_req1.rq_first_pbe_addr_hi =
 210                                 (u32)((u64) tgt->rq_dma >> 32);
 211
 212         ofld_req1.rq_prod = 0x8000;
 213
 214         /* Initialize offload request 2 structure */
 215         memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
 216
 217         ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
 218         ofld_req2.hdr.flags =
 219                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 220
 221         ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
 222
 223         ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
 224         ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
 225
 226         ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
 227         ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
 228
 229         ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
 230         ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
 231
 232         /* Initialize offload request 3 structure */
 233         memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
 234
 235         ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
 236         ofld_req3.hdr.flags =
 237                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 238
 239         ofld_req3.vlan_tag = interface->vlan_id <<
 240                                 FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
 241         ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
 242
 243         port_id = fc_host_port_id(lport->host);
 244         if (port_id == 0) {
 245                 BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?\n");
 246                 return -EINVAL;
 247         }
 248
 249         /*
 250          * Store s_id of the initiator for further reference. This will
 251          * be used during disable/destroy during linkdown processing as
 252          * when the lport is reset, the port_id also is reset to 0
 253          */
 254         tgt->sid = port_id;
 255         ofld_req3.s_id[0] = (port_id & 0x000000FF);
 256         ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
 257         ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
 258
 259         port_id = rport->port_id;
 260         ofld_req3.d_id[0] = (port_id & 0x000000FF);
 261         ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
 262         ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
 263
 264         ofld_req3.tx_total_conc_seqs = rdata->max_seq;
 265
 266         ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
 267         ofld_req3.rx_max_fc_pay_len  = lport->mfs;
 268
 269         ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
 270         ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
 271         ofld_req3.rx_open_seqs_exch_c3 = 1;
 272
 273         ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
 274         ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
 275
 276         /* set mul_n_port_ids supported flag to 0, until it is supported */
 277         ofld_req3.flags = 0;
 278         /*
 279         ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
 280                             FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
 281         */
 282         /* Info from PLOGI response */
 283         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
 284                              FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
 285
 286         ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
 287                              FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
 288
 289         /*
 290          * Info from PRLI response, this info is used for sequence level error
 291          * recovery support
 292          */
 293         if (tgt->dev_type == TYPE_TAPE) {
 294                 ofld_req3.flags |= 1 <<
 295                                     FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT;
 296                 ofld_req3.flags |= (((rdata->flags & FC_RP_FLAGS_REC_SUPPORTED)
 297                                     ? 1 : 0) <<
 298                                     FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT);
 299         }
 300
 301         /* vlan flag */
 302         ofld_req3.flags |= (interface->vlan_enabled <<
 303                             FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
 304
 305         /* C2_VALID and ACK flags are not set as they are not supported */
 306
 307
 308         /* Initialize offload request 4 structure */
 309         memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
 310         ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
 311         ofld_req4.hdr.flags =
 312                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 313
 314         ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
 315
 316
 317         ofld_req4.src_mac_addr_lo[0] =  port->data_src_addr[5];
 318                                                         /* local mac */
 319         ofld_req4.src_mac_addr_lo[1] =  port->data_src_addr[4];
 320         ofld_req4.src_mac_addr_mid[0] =  port->data_src_addr[3];
 321         ofld_req4.src_mac_addr_mid[1] =  port->data_src_addr[2];
 322         ofld_req4.src_mac_addr_hi[0] =  port->data_src_addr[1];
 323         ofld_req4.src_mac_addr_hi[1] =  port->data_src_addr[0];
 324         ofld_req4.dst_mac_addr_lo[0] =  ctlr->dest_addr[5];
 325                                                         /* fcf mac */
 326         ofld_req4.dst_mac_addr_lo[1] = ctlr->dest_addr[4];
 327         ofld_req4.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
 328         ofld_req4.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
 329         ofld_req4.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
 330         ofld_req4.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
 331
 332         ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
 333         ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
 334
 335         ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
 336         ofld_req4.confq_pbl_base_addr_hi =
 337                                         (u32)((u64) tgt->confq_pbl_dma >> 32);
 338
 339         kwqe_arr[0] = (struct kwqe *) &ofld_req1;
 340         kwqe_arr[1] = (struct kwqe *) &ofld_req2;
 341         kwqe_arr[2] = (struct kwqe *) &ofld_req3;
 342         kwqe_arr[3] = (struct kwqe *) &ofld_req4;
 343
 344         if (hba->cnic && hba->cnic->submit_kwqes)
 345                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 346
 347         return rc;
 348 }
 349
 350 /**
 351  * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
 352  *
 353  * @port:               port structure pointer
 354  * @tgt:                bnx2fc_rport structure pointer
 355  */
 356 int bnx2fc_send_session_enable_req(struct fcoe_port *port,
 357                                         struct bnx2fc_rport *tgt)
 358 {
 359         struct kwqe *kwqe_arr[2];
 360         struct bnx2fc_interface *interface = port->priv;
 361         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
 362         struct bnx2fc_hba *hba = interface->hba;
 363         struct fcoe_kwqe_conn_enable_disable enbl_req;
 364         struct fc_lport *lport = port->lport;
 365         struct fc_rport *rport = tgt->rport;
 366         int num_kwqes = 1;
 367         int rc = 0;
 368         u32 port_id;
 369
 370         memset(&enbl_req, 0x00,
 371                sizeof(struct fcoe_kwqe_conn_enable_disable));
 372         enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
 373         enbl_req.hdr.flags =
 374                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 375
 376         enbl_req.src_mac_addr_lo[0] =  port->data_src_addr[5];
 377                                                         /* local mac */
 378         enbl_req.src_mac_addr_lo[1] =  port->data_src_addr[4];
 379         enbl_req.src_mac_addr_mid[0] =  port->data_src_addr[3];
 380         enbl_req.src_mac_addr_mid[1] =  port->data_src_addr[2];
 381         enbl_req.src_mac_addr_hi[0] =  port->data_src_addr[1];
 382         enbl_req.src_mac_addr_hi[1] =  port->data_src_addr[0];
 383         memcpy(tgt->src_addr, port->data_src_addr, ETH_ALEN);
 384
 385         enbl_req.dst_mac_addr_lo[0] =  ctlr->dest_addr[5];
 386         enbl_req.dst_mac_addr_lo[1] =  ctlr->dest_addr[4];
 387         enbl_req.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
 388         enbl_req.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
 389         enbl_req.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
 390         enbl_req.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
 391
 392         port_id = fc_host_port_id(lport->host);
 393         if (port_id != tgt->sid) {
 394                 printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
 395                                 "sid = 0x%x\n", port_id, tgt->sid);
 396                 port_id = tgt->sid;
 397         }
 398         enbl_req.s_id[0] = (port_id & 0x000000FF);
 399         enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 400         enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 401
 402         port_id = rport->port_id;
 403         enbl_req.d_id[0] = (port_id & 0x000000FF);
 404         enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 405         enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 406         enbl_req.vlan_tag = interface->vlan_id <<
 407                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 408         enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 409         enbl_req.vlan_flag = interface->vlan_enabled;
 410         enbl_req.context_id = tgt->context_id;
 411         enbl_req.conn_id = tgt->fcoe_conn_id;
 412
 413         kwqe_arr[0] = (struct kwqe *) &enbl_req;
 414
 415         if (hba->cnic && hba->cnic->submit_kwqes)
 416                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 417         return rc;
 418 }
 419
 420 /**
 421  * bnx2fc_send_session_disable_req - initiates FCoE Session disable
 422  *
 423  * @port:               port structure pointer
 424  * @tgt:                bnx2fc_rport structure pointer
 425  */
 426 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
 427                                     struct bnx2fc_rport *tgt)
 428 {
 429         struct bnx2fc_interface *interface = port->priv;
 430         struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
 431         struct bnx2fc_hba *hba = interface->hba;
 432         struct fcoe_kwqe_conn_enable_disable disable_req;
 433         struct kwqe *kwqe_arr[2];
 434         struct fc_rport *rport = tgt->rport;
 435         int num_kwqes = 1;
 436         int rc = 0;
 437         u32 port_id;
 438
 439         memset(&disable_req, 0x00,
 440                sizeof(struct fcoe_kwqe_conn_enable_disable));
 441         disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
 442         disable_req.hdr.flags =
 443                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 444
 445         disable_req.src_mac_addr_lo[0] =  tgt->src_addr[5];
 446         disable_req.src_mac_addr_lo[1] =  tgt->src_addr[4];
 447         disable_req.src_mac_addr_mid[0] =  tgt->src_addr[3];
 448         disable_req.src_mac_addr_mid[1] =  tgt->src_addr[2];
 449         disable_req.src_mac_addr_hi[0] =  tgt->src_addr[1];
 450         disable_req.src_mac_addr_hi[1] =  tgt->src_addr[0];
 451
 452         disable_req.dst_mac_addr_lo[0] =  ctlr->dest_addr[5];
 453         disable_req.dst_mac_addr_lo[1] =  ctlr->dest_addr[4];
 454         disable_req.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
 455         disable_req.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
 456         disable_req.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
 457         disable_req.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
 458
 459         port_id = tgt->sid;
 460         disable_req.s_id[0] = (port_id & 0x000000FF);
 461         disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
 462         disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
 463
 464
 465         port_id = rport->port_id;
 466         disable_req.d_id[0] = (port_id & 0x000000FF);
 467         disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
 468         disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
 469         disable_req.context_id = tgt->context_id;
 470         disable_req.conn_id = tgt->fcoe_conn_id;
 471         disable_req.vlan_tag = interface->vlan_id <<
 472                                 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
 473         disable_req.vlan_tag |=
 474                         3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
 475         disable_req.vlan_flag = interface->vlan_enabled;
 476
 477         kwqe_arr[0] = (struct kwqe *) &disable_req;
 478
 479         if (hba->cnic && hba->cnic->submit_kwqes)
 480                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 481
 482         return rc;
 483 }
 484
 485 /**
 486  * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
 487  *
 488  * @hba:                adapter structure pointer
 489  * @tgt:                bnx2fc_rport structure pointer
 490  */
 491 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
 492                                         struct bnx2fc_rport *tgt)
 493 {
 494         struct fcoe_kwqe_conn_destroy destroy_req;
 495         struct kwqe *kwqe_arr[2];
 496         int num_kwqes = 1;
 497         int rc = 0;
 498
 499         memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
 500         destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
 501         destroy_req.hdr.flags =
 502                 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 503
 504         destroy_req.context_id = tgt->context_id;
 505         destroy_req.conn_id = tgt->fcoe_conn_id;
 506
 507         kwqe_arr[0] = (struct kwqe *) &destroy_req;
 508
 509         if (hba->cnic && hba->cnic->submit_kwqes)
 510                 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
 511
 512         return rc;
 513 }
 514
 515 static bool is_valid_lport(struct bnx2fc_hba *hba, struct fc_lport *lport)
 516 {
 517         struct bnx2fc_lport *blport;
 518
 519         spin_lock_bh(&hba->hba_lock);
 520         list_for_each_entry(blport, &hba->vports, list) {
 521                 if (blport->lport == lport) {
 522                         spin_unlock_bh(&hba->hba_lock);
 523                         return true;
 524                 }
 525         }
 526         spin_unlock_bh(&hba->hba_lock);
 527         return false;
 528
 529 }
 530
 531
 532 static void bnx2fc_unsol_els_work(struct work_struct *work)
 533 {
 534         struct bnx2fc_unsol_els *unsol_els;
 535         struct fc_lport *lport;
 536         struct bnx2fc_hba *hba;
 537         struct fc_frame *fp;
 538
 539         unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
 540         lport = unsol_els->lport;
 541         fp = unsol_els->fp;
 542         hba = unsol_els->hba;
 543         if (is_valid_lport(hba, lport))
 544                 fc_exch_recv(lport, fp);
 545         kfree(unsol_els);
 546 }
 547
 548 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
 549                                    unsigned char *buf,
 550                                    u32 frame_len, u16 l2_oxid)
 551 {
 552         struct fcoe_port *port = tgt->port;
 553         struct fc_lport *lport = port->lport;
 554         struct bnx2fc_interface *interface = port->priv;
 555         struct bnx2fc_unsol_els *unsol_els;
 556         struct fc_frame_header *fh;
 557         struct fc_frame *fp;
 558         struct sk_buff *skb;
 559         u32 payload_len;
 560         u32 crc;
 561         u8 op;
 562
 563
 564         unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
 565         if (!unsol_els) {
 566                 BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work\n");
 567                 return;
 568         }
 569
 570         BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d\n",
 571                 l2_oxid, frame_len);
 572
 573         payload_len = frame_len - sizeof(struct fc_frame_header);
 574
 575         fp = fc_frame_alloc(lport, payload_len);
 576         if (!fp) {
 577                 printk(KERN_ERR PFX "fc_frame_alloc failure\n");
 578                 kfree(unsol_els);
 579                 return;
 580         }
 581
 582         fh = (struct fc_frame_header *) fc_frame_header_get(fp);
 583         /* Copy FC Frame header and payload into the frame */
 584         memcpy(fh, buf, frame_len);
 585
 586         if (l2_oxid != FC_XID_UNKNOWN)
 587                 fh->fh_ox_id = htons(l2_oxid);
 588
 589         skb = fp_skb(fp);
 590
 591         if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
 592             (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
 593
 594                 if (fh->fh_type == FC_TYPE_ELS) {
 595                         op = fc_frame_payload_op(fp);
 596                         if ((op == ELS_TEST) || (op == ELS_ESTC) ||
 597                             (op == ELS_FAN) || (op == ELS_CSU)) {
 598                                 /*
 599                                  * No need to reply for these
 600                                  * ELS requests
 601                                  */
 602                                 printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
 603                                 kfree_skb(skb);
 604                                 kfree(unsol_els);
 605                                 return;
 606                         }
 607                 }
 608                 crc = fcoe_fc_crc(fp);
 609                 fc_frame_init(fp);
 610                 fr_dev(fp) = lport;
 611                 fr_sof(fp) = FC_SOF_I3;
 612                 fr_eof(fp) = FC_EOF_T;
 613                 fr_crc(fp) = cpu_to_le32(~crc);
 614                 unsol_els->lport = lport;
 615                 unsol_els->hba = interface->hba;
 616                 unsol_els->fp = fp;
 617                 INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
 618                 queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
 619         } else {
 620                 BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
 621                 kfree_skb(skb);
 622                 kfree(unsol_els);
 623         }
 624 }
 625
 626 static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
 627 {
 628         u8 num_rq;
 629         struct fcoe_err_report_entry *err_entry;
 630         unsigned char *rq_data;
 631         unsigned char *buf = NULL, *buf1;
 632         int i;
 633         u16 xid;
 634         u32 frame_len, len;
 635         struct bnx2fc_cmd *io_req = NULL;
 636         struct bnx2fc_interface *interface = tgt->port->priv;
 637         struct bnx2fc_hba *hba = interface->hba;
 638         int rc = 0;
 639         u64 err_warn_bit_map;
 640         u8 err_warn = 0xff;
 641
 642
 643         BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
 644         switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
 645         case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
 646                 frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
 647                              FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
 648
 649                 num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
 650
 651                 spin_lock_bh(&tgt->tgt_lock);
 652                 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
 653                 spin_unlock_bh(&tgt->tgt_lock);
 654
 655                 if (rq_data) {
 656                         buf = rq_data;
 657                 } else {
 658                         buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
 659                                               GFP_ATOMIC);
 660
 661                         if (!buf1) {
 662                                 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
 663                                 break;
 664                         }
 665
 666                         for (i = 0; i < num_rq; i++) {
 667                                 spin_lock_bh(&tgt->tgt_lock);
 668                                 rq_data = (unsigned char *)
 669                                            bnx2fc_get_next_rqe(tgt, 1);
 670                                 spin_unlock_bh(&tgt->tgt_lock);
 671                                 len = BNX2FC_RQ_BUF_SZ;
 672                                 memcpy(buf1, rq_data, len);
 673                                 buf1 += len;
 674                         }
 675                 }
 676                 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
 677                                               FC_XID_UNKNOWN);
 678
 679                 if (buf != rq_data)
 680                         kfree(buf);
 681                 spin_lock_bh(&tgt->tgt_lock);
 682                 bnx2fc_return_rqe(tgt, num_rq);
 683                 spin_unlock_bh(&tgt->tgt_lock);
 684                 break;
 685
 686         case FCOE_ERROR_DETECTION_CQE_TYPE:
 687                 /*
 688                  * In case of error reporting CQE a single RQ entry
 689                  * is consumed.
 690                  */
 691                 spin_lock_bh(&tgt->tgt_lock);
 692                 num_rq = 1;
 693                 err_entry = (struct fcoe_err_report_entry *)
 694                              bnx2fc_get_next_rqe(tgt, 1);
 695                 xid = err_entry->fc_hdr.ox_id;
 696                 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
 697                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
 698                         err_entry->data.err_warn_bitmap_hi,
 699                         err_entry->data.err_warn_bitmap_lo);
 700                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
 701                         err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 702
 703                 if (xid > hba->max_xid) {
 704                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
 705                                    xid);
 706                         goto ret_err_rqe;
 707                 }
 708
 709
 710                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 711                 if (!io_req)
 712                         goto ret_err_rqe;
 713
 714                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 715                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 716                         goto ret_err_rqe;
 717                 }
 718
 719                 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
 720                                        &io_req->req_flags)) {
 721                         BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
 722                                             "progress.. ignore unsol err\n");
 723                         goto ret_err_rqe;
 724                 }
 725
 726                 err_warn_bit_map = (u64)
 727                         ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
 728                         (u64)err_entry->data.err_warn_bitmap_lo;
 729                 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
 730                         if (err_warn_bit_map & (u64)((u64)1 << i)) {
 731                                 err_warn = i;
 732                                 break;
 733                         }
 734                 }
 735
 736                 /*
 737                  * If ABTS is already in progress, and FW error is
 738                  * received after that, do not cancel the timeout_work
 739                  * and let the error recovery continue by explicitly
 740                  * logging out the target, when the ABTS eventually
 741                  * times out.
 742                  */
 743                 if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
 744                         printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
 745                                             "in ABTS processing\n", xid);
 746                         goto ret_err_rqe;
 747                 }
 748                 BNX2FC_TGT_DBG(tgt, "err = 0x%x\n", err_warn);
 749                 if (tgt->dev_type != TYPE_TAPE)
 750                         goto skip_rec;
 751                 switch (err_warn) {
 752                 case FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION:
 753                 case FCOE_ERROR_CODE_DATA_OOO_RO:
 754                 case FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT:
 755                 case FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET:
 756                 case FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ:
 757                 case FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET:
 758                         BNX2FC_TGT_DBG(tgt, "REC TOV popped for xid - 0x%x\n",
 759                                    xid);
 760                         memcpy(&io_req->err_entry, err_entry,
 761                                sizeof(struct fcoe_err_report_entry));
 762                         if (!test_bit(BNX2FC_FLAG_SRR_SENT,
 763                                       &io_req->req_flags)) {
 764                                 spin_unlock_bh(&tgt->tgt_lock);
 765                                 rc = bnx2fc_send_rec(io_req);
 766                                 spin_lock_bh(&tgt->tgt_lock);
 767
 768                                 if (rc)
 769                                         goto skip_rec;
 770                         } else
 771                                 printk(KERN_ERR PFX "SRR in progress\n");
 772                         goto ret_err_rqe;
 773                         break;
 774                 default:
 775                         break;
 776                 }
 777
 778 skip_rec:
 779                 set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags);
 780                 /*
 781                  * Cancel the timeout_work, as we received IO
 782                  * completion with FW error.
 783                  */
 784                 if (cancel_delayed_work(&io_req->timeout_work))
 785                         kref_put(&io_req->refcount, bnx2fc_cmd_release);
 786
 787                 rc = bnx2fc_initiate_abts(io_req);
 788                 if (rc != SUCCESS) {
 789                         printk(KERN_ERR PFX "err_warn: initiate_abts "
 790                                 "failed xid = 0x%x. issue cleanup\n",
 791                                 io_req->xid);
 792                         bnx2fc_initiate_cleanup(io_req);
 793                 }
 794 ret_err_rqe:
 795                 bnx2fc_return_rqe(tgt, 1);
 796                 spin_unlock_bh(&tgt->tgt_lock);
 797                 break;
 798
 799         case FCOE_WARNING_DETECTION_CQE_TYPE:
 800                 /*
 801                  *In case of warning reporting CQE a single RQ entry
 802                  * is consumes.
 803                  */
 804                 spin_lock_bh(&tgt->tgt_lock);
 805                 num_rq = 1;
 806                 err_entry = (struct fcoe_err_report_entry *)
 807                              bnx2fc_get_next_rqe(tgt, 1);
 808                 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
 809                 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
 810                 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
 811                         err_entry->data.err_warn_bitmap_hi,
 812                         err_entry->data.err_warn_bitmap_lo);
 813                 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
 814                         err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 815
 816                 if (xid > hba->max_xid) {
 817                         BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n", xid);
 818                         goto ret_warn_rqe;
 819                 }
 820
 821                 err_warn_bit_map = (u64)
 822                         ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
 823                         (u64)err_entry->data.err_warn_bitmap_lo;
 824                 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
 825                         if (err_warn_bit_map & ((u64)1 << i)) {
 826                                 err_warn = i;
 827                                 break;
 828                         }
 829                 }
 830                 BNX2FC_TGT_DBG(tgt, "warn = 0x%x\n", err_warn);
 831
 832                 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 833                 if (!io_req)
 834                         goto ret_warn_rqe;
 835
 836                 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
 837                         printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
 838                         goto ret_warn_rqe;
 839                 }
 840
 841                 memcpy(&io_req->err_entry, err_entry,
 842                        sizeof(struct fcoe_err_report_entry));
 843
 844                 if (err_warn == FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION)
 845                         /* REC_TOV is not a warning code */
 846                         BUG_ON(1);
 847                 else
 848                         BNX2FC_TGT_DBG(tgt, "Unsolicited warning\n");
 849 ret_warn_rqe:
 850                 bnx2fc_return_rqe(tgt, 1);
 851                 spin_unlock_bh(&tgt->tgt_lock);
 852                 break;
 853
 854         default:
 855                 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
 856                 break;
 857         }
 858 }
 859
 860 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe,
 861                              unsigned char *rq_data, u8 num_rq,
 862                              struct fcoe_task_ctx_entry *task)
 863 {
 864         struct fcoe_port *port = tgt->port;
 865         struct bnx2fc_interface *interface = port->priv;
 866         struct bnx2fc_hba *hba = interface->hba;
 867         struct bnx2fc_cmd *io_req;
 868
 869         u16 xid;
 870         u8  cmd_type;
 871         u8 rx_state = 0;
 872
 873         spin_lock_bh(&tgt->tgt_lock);
 874
 875         xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
 876         io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
 877
 878         if (io_req == NULL) {
 879                 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
 880                 spin_unlock_bh(&tgt->tgt_lock);
 881                 return;
 882         }
 883
 884         /* Timestamp IO completion time */
 885         cmd_type = io_req->cmd_type;
 886
 887         rx_state = ((task->rxwr_txrd.var_ctx.rx_flags &
 888                     FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE) >>
 889                     FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE_SHIFT);
 890
 891         /* Process other IO completion types */
 892         switch (cmd_type) {
 893         case BNX2FC_SCSI_CMD:
 894                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
 895                         bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq,
 896                                                       rq_data);
 897                         spin_unlock_bh(&tgt->tgt_lock);
 898                         return;
 899                 }
 900
 901                 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 902                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 903                 else if (rx_state ==
 904                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 905                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 906                 else
 907                         printk(KERN_ERR PFX "Invalid rx state - %d\n",
 908                                 rx_state);
 909                 break;
 910
 911         case BNX2FC_TASK_MGMT_CMD:
 912                 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
 913                 bnx2fc_process_tm_compl(io_req, task, num_rq, rq_data);
 914                 break;
 915
 916         case BNX2FC_ABTS:
 917                 /*
 918                  * ABTS request received by firmware. ABTS response
 919                  * will be delivered to the task belonging to the IO
 920                  * that was aborted
 921                  */
 922                 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
 923                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 924                 break;
 925
 926         case BNX2FC_ELS:
 927                 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED)
 928                         bnx2fc_process_els_compl(io_req, task, num_rq);
 929                 else if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
 930                         bnx2fc_process_abts_compl(io_req, task, num_rq);
 931                 else if (rx_state ==
 932                          FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
 933                         bnx2fc_process_cleanup_compl(io_req, task, num_rq);
 934                 else
 935                         printk(KERN_ERR PFX "Invalid rx state =  %d\n",
 936                                 rx_state);
 937                 break;
 938
 939         case BNX2FC_CLEANUP:
 940                 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
 941                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 942                 break;
 943
 944         case BNX2FC_SEQ_CLEANUP:
 945                 BNX2FC_IO_DBG(io_req, "cq_compl(0x%x) - seq cleanup resp\n",
 946                               io_req->xid);
 947                 bnx2fc_process_seq_cleanup_compl(io_req, task, rx_state);
 948                 kref_put(&io_req->refcount, bnx2fc_cmd_release);
 949                 break;
 950
 951         default:
 952                 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
 953                 break;
 954         }
 955         spin_unlock_bh(&tgt->tgt_lock);
 956 }
 957
 958 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt)
 959 {
 960         struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
 961         u32 msg;
 962
 963         wmb();
 964         rx_db->doorbell_cq_cons = tgt->cq_cons_idx | (tgt->cq_curr_toggle_bit <<
 965                         FCOE_CQE_TOGGLE_BIT_SHIFT);
 966         msg = *((u32 *)rx_db);
 967         writel(cpu_to_le32(msg), tgt->ctx_base);
 968
 969 }
 970
 971 static struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe,
 972                                              unsigned char *rq_data, u8 num_rq,
 973                                              struct fcoe_task_ctx_entry *task)
 974 {
 975         struct bnx2fc_work *work;
 976         work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
 977         if (!work)
 978                 return NULL;
 979
 980         INIT_LIST_HEAD(&work->list);
 981         work->tgt = tgt;
 982         work->wqe = wqe;
 983         work->num_rq = num_rq;
 984         work->task = task;
 985         if (rq_data)
 986                 memcpy(work->rq_data, rq_data, BNX2FC_RQ_BUF_SZ);
 987
 988         return work;
 989 }
 990
 991 /* Pending work request completion */
 992 static bool bnx2fc_pending_work(struct bnx2fc_rport *tgt, unsigned int wqe)
 993 {
 994         unsigned int cpu = wqe % num_possible_cpus();
 995         struct bnx2fc_percpu_s *fps;
 996         struct bnx2fc_work *work;
 997         struct fcoe_task_ctx_entry *task;
 998         struct fcoe_task_ctx_entry *task_page;
 999         struct fcoe_port *port = tgt->port;
1000         struct bnx2fc_interface *interface = port->priv;
1001         struct bnx2fc_hba *hba = interface->hba;
1002         unsigned char *rq_data = NULL;
1003         unsigned char rq_data_buff[BNX2FC_RQ_BUF_SZ];
1004         int task_idx, index;
1005         u16 xid;
1006         u8 num_rq;
1007         int i;
1008
1009         xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
1010         if (xid >= hba->max_tasks) {
1011                 pr_err(PFX "ERROR:xid out of range\n");
1012                 return false;
1013         }
1014
1015         task_idx = xid / BNX2FC_TASKS_PER_PAGE;
1016         index = xid % BNX2FC_TASKS_PER_PAGE;
1017         task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
1018         task = &task_page[index];
1019
1020         num_rq = ((task->rxwr_txrd.var_ctx.rx_flags &
1021                    FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE) >>
1022                   FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE_SHIFT);
1023
1024         memset(rq_data_buff, 0, BNX2FC_RQ_BUF_SZ);
1025
1026         if (!num_rq)
1027                 goto num_rq_zero;
1028
1029         rq_data = bnx2fc_get_next_rqe(tgt, 1);
1030
1031         if (num_rq > 1) {
1032                 /* We do not need extra sense data */
1033                 for (i = 1; i < num_rq; i++)
1034                         bnx2fc_get_next_rqe(tgt, 1);
1035         }
1036
1037         if (rq_data)
1038                 memcpy(rq_data_buff, rq_data, BNX2FC_RQ_BUF_SZ);
1039
1040         /* return RQ entries */
1041         for (i = 0; i < num_rq; i++)
1042                 bnx2fc_return_rqe(tgt, 1);
1043
1044 num_rq_zero:
1045
1046         fps = &per_cpu(bnx2fc_percpu, cpu);
1047         spin_lock_bh(&fps->fp_work_lock);
1048         if (fps->iothread) {
1049                 work = bnx2fc_alloc_work(tgt, wqe, rq_data_buff,
1050                                          num_rq, task);
1051                 if (work) {
1052                         list_add_tail(&work->list, &fps->work_list);
1053                         wake_up_process(fps->iothread);
1054                         spin_unlock_bh(&fps->fp_work_lock);
1055                         return true;
1056                 }
1057         }
1058         spin_unlock_bh(&fps->fp_work_lock);
1059         bnx2fc_process_cq_compl(tgt, wqe,
1060                                 rq_data_buff, num_rq, task);
1061
1062         return true;
1063 }
1064
1065 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
1066 {
1067         struct fcoe_cqe *cq;
1068         u32 cq_cons;
1069         struct fcoe_cqe *cqe;
1070         u32 num_free_sqes = 0;
1071         u32 num_cqes = 0;
1072         u16 wqe;
1073
1074         /*
1075          * cq_lock is a low contention lock used to protect
1076          * the CQ data structure from being freed up during
1077          * the upload operation
1078          */
1079         spin_lock_bh(&tgt->cq_lock);
1080
1081         if (!tgt->cq) {
1082                 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
1083                 spin_unlock_bh(&tgt->cq_lock);
1084                 return 0;
1085         }
1086         cq = tgt->cq;
1087         cq_cons = tgt->cq_cons_idx;
1088         cqe = &cq[cq_cons];
1089
1090         while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
1091                (tgt->cq_curr_toggle_bit <<
1092                FCOE_CQE_TOGGLE_BIT_SHIFT)) {
1093
1094                 /* new entry on the cq */
1095                 if (wqe & FCOE_CQE_CQE_TYPE) {
1096                         /* Unsolicited event notification */
1097                         bnx2fc_process_unsol_compl(tgt, wqe);
1098                 } else {
1099                         if (bnx2fc_pending_work(tgt, wqe))
1100                                 num_free_sqes++;
1101                 }
1102                 cqe++;
1103                 tgt->cq_cons_idx++;
1104                 num_cqes++;
1105
1106                 if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
1107                         tgt->cq_cons_idx = 0;
1108                         cqe = cq;
1109                         tgt->cq_curr_toggle_bit =
1110                                 1 - tgt->cq_curr_toggle_bit;
1111                 }
1112         }
1113         if (num_cqes) {
1114                 /* Arm CQ only if doorbell is mapped */
1115                 if (tgt->ctx_base)
1116                         bnx2fc_arm_cq(tgt);
1117                 atomic_add(num_free_sqes, &tgt->free_sqes);
1118         }
1119         spin_unlock_bh(&tgt->cq_lock);
1120         return 0;
1121 }
1122
1123 /**
1124  * bnx2fc_fastpath_notification - process global event queue (KCQ)
1125  *
1126  * @hba:                adapter structure pointer
1127  * @new_cqe_kcqe:       pointer to newly DMA'd KCQ entry
1128  *
1129  * Fast path event notification handler
1130  */
1131 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
1132                                         struct fcoe_kcqe *new_cqe_kcqe)
1133 {
1134         u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
1135         struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
1136
1137         if (!tgt) {
1138                 printk(KERN_ERR PFX "conn_id 0x%x not valid\n", conn_id);
1139                 return;
1140         }
1141
1142         bnx2fc_process_new_cqes(tgt);
1143 }
1144
1145 /**
1146  * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
1147  *
1148  * @hba:        adapter structure pointer
1149  * @ofld_kcqe:  connection offload kcqe pointer
1150  *
1151  * handle session offload completion, enable the session if offload is
1152  * successful.
1153  */
1154 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
1155                                         struct fcoe_kcqe *ofld_kcqe)
1156 {
1157         struct bnx2fc_rport             *tgt;
1158         struct bnx2fc_interface         *interface;
1159         u32                             conn_id;
1160         u32                             context_id;
1161
1162         conn_id = ofld_kcqe->fcoe_conn_id;
1163         context_id = ofld_kcqe->fcoe_conn_context_id;
1164         tgt = hba->tgt_ofld_list[conn_id];
1165         if (!tgt) {
1166                 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
1167                 return;
1168         }
1169         BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
1170                 ofld_kcqe->fcoe_conn_context_id);
1171         interface = tgt->port->priv;
1172         if (hba != interface->hba) {
1173                 printk(KERN_ERR PFX "ERROR:ofld_cmpl: HBA mis-match\n");
1174                 goto ofld_cmpl_err;
1175         }
1176         /*
1177          * cnic has allocated a context_id for this session; use this
1178          * while enabling the session.
1179          */
1180         tgt->context_id = context_id;
1181         if (ofld_kcqe->completion_status) {
1182                 if (ofld_kcqe->completion_status ==
1183                                 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
1184                         printk(KERN_ERR PFX "unable to allocate FCoE context "
1185                                 "resources\n");
1186                         set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
1187                 }
1188         } else {
1189                 /* FW offload request successfully completed */
1190                 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1191         }
1192 ofld_cmpl_err:
1193         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1194         wake_up_interruptible(&tgt->ofld_wait);
1195 }
1196
1197 /**
1198  * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1199  *
1200  * @hba:        adapter structure pointer
1201  * @ofld_kcqe:  connection offload kcqe pointer
1202  *
1203  * handle session enable completion, mark the rport as ready
1204  */
1205
1206 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1207                                                 struct fcoe_kcqe *ofld_kcqe)
1208 {
1209         struct bnx2fc_rport             *tgt;
1210         struct bnx2fc_interface         *interface;
1211         u32                             conn_id;
1212         u32                             context_id;
1213
1214         context_id = ofld_kcqe->fcoe_conn_context_id;
1215         conn_id = ofld_kcqe->fcoe_conn_id;
1216         tgt = hba->tgt_ofld_list[conn_id];
1217         if (!tgt) {
1218                 printk(KERN_ERR PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1219                 return;
1220         }
1221
1222         BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1223                 ofld_kcqe->fcoe_conn_context_id);
1224
1225         /*
1226          * context_id should be the same for this target during offload
1227          * and enable
1228          */
1229         if (tgt->context_id != context_id) {
1230                 printk(KERN_ERR PFX "context id mis-match\n");
1231                 return;
1232         }
1233         interface = tgt->port->priv;
1234         if (hba != interface->hba) {
1235                 printk(KERN_ERR PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1236                 goto enbl_cmpl_err;
1237         }
1238         if (!ofld_kcqe->completion_status)
1239                 /* enable successful - rport ready for issuing IOs */
1240                 set_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
1241
1242 enbl_cmpl_err:
1243         set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1244         wake_up_interruptible(&tgt->ofld_wait);
1245 }
1246
1247 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1248                                         struct fcoe_kcqe *disable_kcqe)
1249 {
1250
1251         struct bnx2fc_rport             *tgt;
1252         u32                             conn_id;
1253
1254         conn_id = disable_kcqe->fcoe_conn_id;
1255         tgt = hba->tgt_ofld_list[conn_id];
1256         if (!tgt) {
1257                 printk(KERN_ERR PFX "ERROR: disable_cmpl: No disable req\n");
1258                 return;
1259         }
1260
1261         BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1262
1263         if (disable_kcqe->completion_status) {
1264                 printk(KERN_ERR PFX "Disable failed with cmpl status %d\n",
1265                         disable_kcqe->completion_status);
1266                 set_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags);
1267                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1268                 wake_up_interruptible(&tgt->upld_wait);
1269         } else {
1270                 /* disable successful */
1271                 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1272                 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1273                 clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
1274                 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1275                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1276                 wake_up_interruptible(&tgt->upld_wait);
1277         }
1278 }
1279
1280 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1281                                         struct fcoe_kcqe *destroy_kcqe)
1282 {
1283         struct bnx2fc_rport             *tgt;
1284         u32                             conn_id;
1285
1286         conn_id = destroy_kcqe->fcoe_conn_id;
1287         tgt = hba->tgt_ofld_list[conn_id];
1288         if (!tgt) {
1289                 printk(KERN_ERR PFX "destroy_cmpl: No destroy req\n");
1290                 return;
1291         }
1292
1293         BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1294
1295         if (destroy_kcqe->completion_status) {
1296                 printk(KERN_ERR PFX "Destroy conn failed, cmpl status %d\n",
1297                         destroy_kcqe->completion_status);
1298                 return;
1299         } else {
1300                 /* destroy successful */
1301                 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1302                 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1303                 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1304                 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1305                 wake_up_interruptible(&tgt->upld_wait);
1306         }
1307 }
1308
1309 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1310 {
1311         switch (err_code) {
1312         case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1313                 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1314                 break;
1315
1316         case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1317                 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1318                 break;
1319
1320         case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1321                 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1322                 break;
1323         case FCOE_KCQE_COMPLETION_STATUS_ERROR:
1324                 printk(KERN_ERR PFX "init failure due to compl status err\n");
1325                 break;
1326         case FCOE_KCQE_COMPLETION_STATUS_WRONG_HSI_VERSION:
1327                 printk(KERN_ERR PFX "init failure due to HSI mismatch\n");
1328                 break;
1329         default:
1330                 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1331         }
1332 }
1333
1334 /**
1335  * bnx2fc_indicae_kcqe - process KCQE
1336  *
1337  * @context:    adapter structure pointer
1338  * @kcq:        kcqe pointer
1339  * @num_cqe:    Number of completion queue elements
1340  *
1341  * Generic KCQ event handler
1342  */
1343 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1344                                         u32 num_cqe)
1345 {
1346         struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1347         int i = 0;
1348         struct fcoe_kcqe *kcqe = NULL;
1349
1350         while (i < num_cqe) {
1351                 kcqe = (struct fcoe_kcqe *) kcq[i++];
1352
1353                 switch (kcqe->op_code) {
1354                 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1355                         bnx2fc_fastpath_notification(hba, kcqe);
1356                         break;
1357
1358                 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1359                         bnx2fc_process_ofld_cmpl(hba, kcqe);
1360                         break;
1361
1362                 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1363                         bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1364                         break;
1365
1366                 case FCOE_KCQE_OPCODE_INIT_FUNC:
1367                         if (kcqe->completion_status !=
1368                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1369                                 bnx2fc_init_failure(hba,
1370                                                 kcqe->completion_status);
1371                         } else {
1372                                 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1373                                 bnx2fc_get_link_state(hba);
1374                                 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1375                                         (u8)hba->pcidev->bus->number);
1376                         }
1377                         break;
1378
1379                 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1380                         if (kcqe->completion_status !=
1381                                         FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1382
1383                                 printk(KERN_ERR PFX "DESTROY failed\n");
1384                         } else {
1385                                 printk(KERN_ERR PFX "DESTROY success\n");
1386                         }
1387                         set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1388                         wake_up_interruptible(&hba->destroy_wait);
1389                         break;
1390
1391                 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1392                         bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1393                         break;
1394
1395                 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1396                         bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1397                         break;
1398
1399                 case FCOE_KCQE_OPCODE_STAT_FUNC:
1400                         if (kcqe->completion_status !=
1401                             FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1402                                 printk(KERN_ERR PFX "STAT failed\n");
1403                         complete(&hba->stat_req_done);
1404                         break;
1405
1406                 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1407                         /* fall thru */
1408                 default:
1409                         printk(KERN_ERR PFX "unknown opcode 0x%x\n",
1410                                                                 kcqe->op_code);
1411                 }
1412         }
1413 }
1414
1415 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1416 {
1417         struct fcoe_sqe *sqe;
1418
1419         sqe = &tgt->sq[tgt->sq_prod_idx];
1420
1421         /* Fill SQ WQE */
1422         sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1423         sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1424
1425         /* Advance SQ Prod Idx */
1426         if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1427                 tgt->sq_prod_idx = 0;
1428                 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1429         }
1430 }
1431
1432 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1433 {
1434         struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
1435         u32 msg;
1436
1437         wmb();
1438         sq_db->prod = tgt->sq_prod_idx |
1439                                 (tgt->sq_curr_toggle_bit << 15);
1440         msg = *((u32 *)sq_db);
1441         writel(cpu_to_le32(msg), tgt->ctx_base);
1442
1443 }
1444
1445 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1446 {
1447         u32 context_id = tgt->context_id;
1448         struct fcoe_port *port = tgt->port;
1449         u32 reg_off;
1450         resource_size_t reg_base;
1451         struct bnx2fc_interface *interface = port->priv;
1452         struct bnx2fc_hba *hba = interface->hba;
1453
1454         reg_base = pci_resource_start(hba->pcidev,
1455                                         BNX2X_DOORBELL_PCI_BAR);
1456         reg_off = (1 << BNX2X_DB_SHIFT) * (context_id & 0x1FFFF);
1457         tgt->ctx_base = ioremap(reg_base + reg_off, 4);
1458         if (!tgt->ctx_base)
1459                 return -ENOMEM;
1460         return 0;
1461 }
1462
1463 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1464 {
1465         char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1466
1467         if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1468                 return NULL;
1469
1470         tgt->rq_cons_idx += num_items;
1471
1472         if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1473                 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1474
1475         return buf;
1476 }
1477
1478 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1479 {
1480         /* return the rq buffer */
1481         u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1482         if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1483                 /* Wrap around RQ */
1484                 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1485         }
1486         tgt->rq_prod_idx = next_prod_idx;
1487         tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1488 }
1489
1490 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnp_req,
1491                                   struct fcoe_task_ctx_entry *task,
1492                                   struct bnx2fc_cmd *orig_io_req,
1493                                   u32 offset)
1494 {
1495         struct scsi_cmnd *sc_cmd = orig_io_req->sc_cmd;
1496         struct bnx2fc_rport *tgt = seq_clnp_req->tgt;
1497         struct fcoe_bd_ctx *bd = orig_io_req->bd_tbl->bd_tbl;
1498         struct fcoe_ext_mul_sges_ctx *sgl;
1499         u8 task_type = FCOE_TASK_TYPE_SEQUENCE_CLEANUP;
1500         u8 orig_task_type;
1501         u16 orig_xid = orig_io_req->xid;
1502         u32 context_id = tgt->context_id;
1503         u64 phys_addr = (u64)orig_io_req->bd_tbl->bd_tbl_dma;
1504         u32 orig_offset = offset;
1505         int bd_count;
1506         int i;
1507
1508         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1509
1510         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1511                 orig_task_type = FCOE_TASK_TYPE_WRITE;
1512         else
1513                 orig_task_type = FCOE_TASK_TYPE_READ;
1514
1515         /* Tx flags */
1516         task->txwr_rxrd.const_ctx.tx_flags =
1517                                 FCOE_TASK_TX_STATE_SEQUENCE_CLEANUP <<
1518                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1519         /* init flags */
1520         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1521                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1522         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1523                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1524         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1525                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1526         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1527                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1528
1529         task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1530
1531         task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_seq_cnt = 0;
1532         task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_data_offset = offset;
1533
1534         bd_count = orig_io_req->bd_tbl->bd_valid;
1535
1536         /* obtain the appropriate bd entry from relative offset */
1537         for (i = 0; i < bd_count; i++) {
1538                 if (offset < bd[i].buf_len)
1539                         break;
1540                 offset -= bd[i].buf_len;
1541         }
1542         phys_addr += (i * sizeof(struct fcoe_bd_ctx));
1543
1544         if (orig_task_type == FCOE_TASK_TYPE_WRITE) {
1545                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1546                                 (u32)phys_addr;
1547                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1548                                 (u32)((u64)phys_addr >> 32);
1549                 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1550                                 bd_count;
1551                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_off =
1552                                 offset; /* adjusted offset */
1553                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_idx = i;
1554         } else {
1555
1556                 /* Multiple SGEs were used for this IO */
1557                 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1558                 sgl->mul_sgl.cur_sge_addr.lo = (u32)phys_addr;
1559                 sgl->mul_sgl.cur_sge_addr.hi = (u32)((u64)phys_addr >> 32);
1560                 sgl->mul_sgl.sgl_size = bd_count;
1561                 sgl->mul_sgl.cur_sge_off = offset; /*adjusted offset */
1562                 sgl->mul_sgl.cur_sge_idx = i;
1563
1564                 memset(&task->rxwr_only.rx_seq_ctx, 0,
1565                        sizeof(struct fcoe_rx_seq_ctx));
1566                 task->rxwr_only.rx_seq_ctx.low_exp_ro = orig_offset;
1567                 task->rxwr_only.rx_seq_ctx.high_exp_ro = orig_offset;
1568         }
1569 }
1570 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1571                               struct fcoe_task_ctx_entry *task,
1572                               u16 orig_xid)
1573 {
1574         u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1575         struct bnx2fc_rport *tgt = io_req->tgt;
1576         u32 context_id = tgt->context_id;
1577
1578         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1579
1580         /* Tx Write Rx Read */
1581         /* init flags */
1582         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1583                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1584         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1585                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1586         if (tgt->dev_type == TYPE_TAPE)
1587                 task->txwr_rxrd.const_ctx.init_flags |=
1588                                 FCOE_TASK_DEV_TYPE_TAPE <<
1589                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1590         else
1591                 task->txwr_rxrd.const_ctx.init_flags |=
1592                                 FCOE_TASK_DEV_TYPE_DISK <<
1593                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1594         task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1595
1596         /* Tx flags */
1597         task->txwr_rxrd.const_ctx.tx_flags =
1598                                 FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1599                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1600
1601         /* Rx Read Tx Write */
1602         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1603                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1604         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1605                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1606 }
1607
1608 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1609                                 struct fcoe_task_ctx_entry *task)
1610 {
1611         struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1612         struct bnx2fc_rport *tgt = io_req->tgt;
1613         struct fc_frame_header *fc_hdr;
1614         struct fcoe_ext_mul_sges_ctx *sgl;
1615         u8 task_type = 0;
1616         u64 *hdr;
1617         u64 temp_hdr[3];
1618         u32 context_id;
1619
1620
1621         /* Obtain task_type */
1622         if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1623             (io_req->cmd_type == BNX2FC_ELS)) {
1624                 task_type = FCOE_TASK_TYPE_MIDPATH;
1625         } else if (io_req->cmd_type == BNX2FC_ABTS) {
1626                 task_type = FCOE_TASK_TYPE_ABTS;
1627         }
1628
1629         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1630
1631         /* Setup the task from io_req for easy reference */
1632         io_req->task = task;
1633
1634         BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1635                 io_req->cmd_type, task_type);
1636
1637         /* Tx only */
1638         if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1639             (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1640                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1641                                 (u32)mp_req->mp_req_bd_dma;
1642                 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1643                                 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1644                 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size = 1;
1645         }
1646
1647         /* Tx Write Rx Read */
1648         /* init flags */
1649         task->txwr_rxrd.const_ctx.init_flags = task_type <<
1650                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1651         if (tgt->dev_type == TYPE_TAPE)
1652                 task->txwr_rxrd.const_ctx.init_flags |=
1653                                 FCOE_TASK_DEV_TYPE_TAPE <<
1654                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1655         else
1656                 task->txwr_rxrd.const_ctx.init_flags |=
1657                                 FCOE_TASK_DEV_TYPE_DISK <<
1658                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1659         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1660                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1661
1662         /* tx flags */
1663         task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1664                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1665
1666         /* Rx Write Tx Read */
1667         task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1668
1669         /* rx flags */
1670         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1671                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1672
1673         context_id = tgt->context_id;
1674         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1675                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1676
1677         fc_hdr = &(mp_req->req_fc_hdr);
1678         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1679                 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1680                 fc_hdr->fh_rx_id = htons(0xffff);
1681                 task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1682         } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1683                 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1684         }
1685
1686         /* Fill FC Header into middle path buffer */
1687         hdr = (u64 *) &task->txwr_rxrd.union_ctx.tx_frame.fc_hdr;
1688         memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1689         hdr[0] = cpu_to_be64(temp_hdr[0]);
1690         hdr[1] = cpu_to_be64(temp_hdr[1]);
1691         hdr[2] = cpu_to_be64(temp_hdr[2]);
1692
1693         /* Rx Only */
1694         if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1695                 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1696
1697                 sgl->mul_sgl.cur_sge_addr.lo = (u32)mp_req->mp_resp_bd_dma;
1698                 sgl->mul_sgl.cur_sge_addr.hi =
1699                                 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1700                 sgl->mul_sgl.sgl_size = 1;
1701         }
1702 }
1703
1704 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1705                              struct fcoe_task_ctx_entry *task)
1706 {
1707         u8 task_type;
1708         struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1709         struct io_bdt *bd_tbl = io_req->bd_tbl;
1710         struct bnx2fc_rport *tgt = io_req->tgt;
1711         struct fcoe_cached_sge_ctx *cached_sge;
1712         struct fcoe_ext_mul_sges_ctx *sgl;
1713         int dev_type = tgt->dev_type;
1714         u64 *fcp_cmnd;
1715         u64 tmp_fcp_cmnd[4];
1716         u32 context_id;
1717         int cnt, i;
1718         int bd_count;
1719
1720         memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1721
1722         /* Setup the task from io_req for easy reference */
1723         io_req->task = task;
1724
1725         if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1726                 task_type = FCOE_TASK_TYPE_WRITE;
1727         else
1728                 task_type = FCOE_TASK_TYPE_READ;
1729
1730         /* Tx only */
1731         bd_count = bd_tbl->bd_valid;
1732         cached_sge = &task->rxwr_only.union_ctx.read_info.sgl_ctx.cached_sge;
1733         if (task_type == FCOE_TASK_TYPE_WRITE) {
1734                 if ((dev_type == TYPE_DISK) && (bd_count == 1)) {
1735                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1736
1737                         task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.lo =
1738                         cached_sge->cur_buf_addr.lo =
1739                                         fcoe_bd_tbl->buf_addr_lo;
1740                         task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.hi =
1741                         cached_sge->cur_buf_addr.hi =
1742                                         fcoe_bd_tbl->buf_addr_hi;
1743                         task->txwr_only.sgl_ctx.cached_sge.cur_buf_rem =
1744                         cached_sge->cur_buf_rem =
1745                                         fcoe_bd_tbl->buf_len;
1746
1747                         task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1748                                 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1749                 } else {
1750                         task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1751                                         (u32)bd_tbl->bd_tbl_dma;
1752                         task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1753                                         (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1754                         task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1755                                         bd_tbl->bd_valid;
1756                 }
1757         }
1758
1759         /*Tx Write Rx Read */
1760         /* Init state to NORMAL */
1761         task->txwr_rxrd.const_ctx.init_flags |= task_type <<
1762                                 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1763         if (dev_type == TYPE_TAPE) {
1764                 task->txwr_rxrd.const_ctx.init_flags |=
1765                                 FCOE_TASK_DEV_TYPE_TAPE <<
1766                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1767                 io_req->rec_retry = 0;
1768                 io_req->rec_retry = 0;
1769         } else
1770                 task->txwr_rxrd.const_ctx.init_flags |=
1771                                 FCOE_TASK_DEV_TYPE_DISK <<
1772                                 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1773         task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1774                                 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1775         /* tx flags */
1776         task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1777                                 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1778
1779         /* Set initial seq counter */
1780         task->txwr_rxrd.union_ctx.tx_seq.ctx.seq_cnt = 1;
1781
1782         /* Fill FCP_CMND IU */
1783         fcp_cmnd = (u64 *)
1784                     task->txwr_rxrd.union_ctx.fcp_cmd.opaque;
1785         bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1786
1787         /* swap fcp_cmnd */
1788         cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1789
1790         for (i = 0; i < cnt; i++) {
1791                 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1792                 fcp_cmnd++;
1793         }
1794
1795         /* Rx Write Tx Read */
1796         task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1797
1798         context_id = tgt->context_id;
1799         task->rxwr_txrd.const_ctx.init_flags = context_id <<
1800                                 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1801
1802         /* rx flags */
1803         /* Set state to "waiting for the first packet" */
1804         task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1805                                 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1806
1807         task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1808
1809         /* Rx Only */
1810         if (task_type != FCOE_TASK_TYPE_READ)
1811                 return;
1812
1813         sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1814         bd_count = bd_tbl->bd_valid;
1815
1816         if (dev_type == TYPE_DISK) {
1817                 if (bd_count == 1) {
1818
1819                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1820
1821                         cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1822                         cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1823                         cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1824                         task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1825                                 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1826                 } else if (bd_count == 2) {
1827                         struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1828
1829                         cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1830                         cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1831                         cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1832
1833                         fcoe_bd_tbl++;
1834                         cached_sge->second_buf_addr.lo =
1835                                                  fcoe_bd_tbl->buf_addr_lo;
1836                         cached_sge->second_buf_addr.hi =
1837                                                 fcoe_bd_tbl->buf_addr_hi;
1838                         cached_sge->second_buf_rem = fcoe_bd_tbl->buf_len;
1839                         task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1840                                 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1841                 } else {
1842
1843                         sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1844                         sgl->mul_sgl.cur_sge_addr.hi =
1845                                         (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1846                         sgl->mul_sgl.sgl_size = bd_count;
1847                 }
1848         } else {
1849                 sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1850                 sgl->mul_sgl.cur_sge_addr.hi =
1851                                 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1852                 sgl->mul_sgl.sgl_size = bd_count;
1853         }
1854 }
1855
1856 /**
1857  * bnx2fc_setup_task_ctx - allocate and map task context
1858  *
1859  * @hba:        pointer to adapter structure
1860  *
1861  * allocate memory for task context, and associated BD table to be used
1862  * by firmware
1863  *
1864  */
1865 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1866 {
1867         int rc = 0;
1868         struct regpair *task_ctx_bdt;
1869         dma_addr_t addr;
1870         int task_ctx_arr_sz;
1871         int i;
1872
1873         /*
1874          * Allocate task context bd table. A page size of bd table
1875          * can map 256 buffers. Each buffer contains 32 task context
1876          * entries. Hence the limit with one page is 8192 task context
1877          * entries.
1878          */
1879         hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1880                                                   PAGE_SIZE,
1881                                                   &hba->task_ctx_bd_dma,
1882                                                   GFP_KERNEL);
1883         if (!hba->task_ctx_bd_tbl) {
1884                 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1885                 rc = -1;
1886                 goto out;
1887         }
1888
1889         /*
1890          * Allocate task_ctx which is an array of pointers pointing to
1891          * a page containing 32 task contexts
1892          */
1893         task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
1894         hba->task_ctx = kzalloc((task_ctx_arr_sz * sizeof(void *)),
1895                                  GFP_KERNEL);
1896         if (!hba->task_ctx) {
1897                 printk(KERN_ERR PFX "unable to allocate task context array\n");
1898                 rc = -1;
1899                 goto out1;
1900         }
1901
1902         /*
1903          * Allocate task_ctx_dma which is an array of dma addresses
1904          */
1905         hba->task_ctx_dma = kmalloc((task_ctx_arr_sz *
1906                                         sizeof(dma_addr_t)), GFP_KERNEL);
1907         if (!hba->task_ctx_dma) {
1908                 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1909                 rc = -1;
1910                 goto out2;
1911         }
1912
1913         task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1914         for (i = 0; i < task_ctx_arr_sz; i++) {
1915
1916                 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1917                                                       PAGE_SIZE,
1918                                                       &hba->task_ctx_dma[i],
1919                                                       GFP_KERNEL);
1920                 if (!hba->task_ctx[i]) {
1921                         printk(KERN_ERR PFX "unable to alloc task context\n");
1922                         rc = -1;
1923                         goto out3;
1924                 }
1925                 addr = (u64)hba->task_ctx_dma[i];
1926                 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1927                 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1928                 task_ctx_bdt++;
1929         }
1930         return 0;
1931
1932 out3:
1933         for (i = 0; i < task_ctx_arr_sz; i++) {
1934                 if (hba->task_ctx[i]) {
1935
1936                         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1937                                 hba->task_ctx[i], hba->task_ctx_dma[i]);
1938                         hba->task_ctx[i] = NULL;
1939                 }
1940         }
1941
1942         kfree(hba->task_ctx_dma);
1943         hba->task_ctx_dma = NULL;
1944 out2:
1945         kfree(hba->task_ctx);
1946         hba->task_ctx = NULL;
1947 out1:
1948         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1949                         hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1950         hba->task_ctx_bd_tbl = NULL;
1951 out:
1952         return rc;
1953 }
1954
1955 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1956 {
1957         int task_ctx_arr_sz;
1958         int i;
1959
1960         if (hba->task_ctx_bd_tbl) {
1961                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1962                                     hba->task_ctx_bd_tbl,
1963                                     hba->task_ctx_bd_dma);
1964                 hba->task_ctx_bd_tbl = NULL;
1965         }
1966
1967         task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
1968         if (hba->task_ctx) {
1969                 for (i = 0; i < task_ctx_arr_sz; i++) {
1970                         if (hba->task_ctx[i]) {
1971                                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1972                                                     hba->task_ctx[i],
1973                                                     hba->task_ctx_dma[i]);
1974                                 hba->task_ctx[i] = NULL;
1975                         }
1976                 }
1977                 kfree(hba->task_ctx);
1978                 hba->task_ctx = NULL;
1979         }
1980
1981         kfree(hba->task_ctx_dma);
1982         hba->task_ctx_dma = NULL;
1983 }
1984
1985 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1986 {
1987         int i;
1988         int segment_count;
1989         u32 *pbl;
1990
1991         if (hba->hash_tbl_segments) {
1992
1993                 pbl = hba->hash_tbl_pbl;
1994                 if (pbl) {
1995                         segment_count = hba->hash_tbl_segment_count;
1996                         for (i = 0; i < segment_count; ++i) {
1997                                 dma_addr_t dma_address;
1998
1999                                 dma_address = le32_to_cpu(*pbl);
2000                                 ++pbl;
2001                                 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
2002                                 ++pbl;
2003                                 dma_free_coherent(&hba->pcidev->dev,
2004                                                   BNX2FC_HASH_TBL_CHUNK_SIZE,
2005                                                   hba->hash_tbl_segments[i],
2006                                                   dma_address);
2007                         }
2008                 }
2009
2010                 kfree(hba->hash_tbl_segments);
2011                 hba->hash_tbl_segments = NULL;
2012         }
2013
2014         if (hba->hash_tbl_pbl) {
2015                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2016                                     hba->hash_tbl_pbl,
2017                                     hba->hash_tbl_pbl_dma);
2018                 hba->hash_tbl_pbl = NULL;
2019         }
2020 }
2021
2022 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
2023 {
2024         int i;
2025         int hash_table_size;
2026         int segment_count;
2027         int segment_array_size;
2028         int dma_segment_array_size;
2029         dma_addr_t *dma_segment_array;
2030         u32 *pbl;
2031
2032         hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
2033                 sizeof(struct fcoe_hash_table_entry);
2034
2035         segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
2036         segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
2037         hba->hash_tbl_segment_count = segment_count;
2038
2039         segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
2040         hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
2041         if (!hba->hash_tbl_segments) {
2042                 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
2043                 return -ENOMEM;
2044         }
2045         dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
2046         dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
2047         if (!dma_segment_array) {
2048                 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
2049                 goto cleanup_ht;
2050         }
2051
2052         for (i = 0; i < segment_count; ++i) {
2053                 hba->hash_tbl_segments[i] = dma_alloc_coherent(&hba->pcidev->dev,
2054                                                                BNX2FC_HASH_TBL_CHUNK_SIZE,
2055                                                                &dma_segment_array[i],
2056                                                                GFP_KERNEL);
2057                 if (!hba->hash_tbl_segments[i]) {
2058                         printk(KERN_ERR PFX "hash segment alloc failed\n");
2059                         goto cleanup_dma;
2060                 }
2061         }
2062
2063         hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
2064                                                &hba->hash_tbl_pbl_dma,
2065                                                GFP_KERNEL);
2066         if (!hba->hash_tbl_pbl) {
2067                 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
2068                 goto cleanup_dma;
2069         }
2070
2071         pbl = hba->hash_tbl_pbl;
2072         for (i = 0; i < segment_count; ++i) {
2073                 u64 paddr = dma_segment_array[i];
2074                 *pbl = cpu_to_le32((u32) paddr);
2075                 ++pbl;
2076                 *pbl = cpu_to_le32((u32) (paddr >> 32));
2077                 ++pbl;
2078         }
2079         pbl = hba->hash_tbl_pbl;
2080         i = 0;
2081         while (*pbl && *(pbl + 1)) {
2082                 ++pbl;
2083                 ++pbl;
2084                 ++i;
2085         }
2086         kfree(dma_segment_array);
2087         return 0;
2088
2089 cleanup_dma:
2090         for (i = 0; i < segment_count; ++i) {
2091                 if (hba->hash_tbl_segments[i])
2092                         dma_free_coherent(&hba->pcidev->dev,
2093                                             BNX2FC_HASH_TBL_CHUNK_SIZE,
2094                                             hba->hash_tbl_segments[i],
2095                                             dma_segment_array[i]);
2096         }
2097
2098         kfree(dma_segment_array);
2099
2100 cleanup_ht:
2101         kfree(hba->hash_tbl_segments);
2102         hba->hash_tbl_segments = NULL;
2103         return -ENOMEM;
2104 }
2105
2106 /**
2107  * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
2108  *
2109  * @hba:        Pointer to adapter structure
2110  *
2111  */
2112 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
2113 {
2114         u64 addr;
2115         u32 mem_size;
2116         int i;
2117
2118         if (bnx2fc_allocate_hash_table(hba))
2119                 return -ENOMEM;
2120
2121         mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2122         hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2123                                                   &hba->t2_hash_tbl_ptr_dma,
2124                                                   GFP_KERNEL);
2125         if (!hba->t2_hash_tbl_ptr) {
2126                 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
2127                 bnx2fc_free_fw_resc(hba);
2128                 return -ENOMEM;
2129         }
2130
2131         mem_size = BNX2FC_NUM_MAX_SESS *
2132                                 sizeof(struct fcoe_t2_hash_table_entry);
2133         hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2134                                               &hba->t2_hash_tbl_dma,
2135                                               GFP_KERNEL);
2136         if (!hba->t2_hash_tbl) {
2137                 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
2138                 bnx2fc_free_fw_resc(hba);
2139                 return -ENOMEM;
2140         }
2141         for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
2142                 addr = (unsigned long) hba->t2_hash_tbl_dma +
2143                          ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
2144                 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
2145                 hba->t2_hash_tbl[i].next.hi = addr >> 32;
2146         }
2147
2148         hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
2149                                                PAGE_SIZE, &hba->dummy_buf_dma,
2150                                                GFP_KERNEL);
2151         if (!hba->dummy_buffer) {
2152                 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
2153                 bnx2fc_free_fw_resc(hba);
2154                 return -ENOMEM;
2155         }
2156
2157         hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
2158                                                &hba->stats_buf_dma,
2159                                                GFP_KERNEL);
2160         if (!hba->stats_buffer) {
2161                 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
2162                 bnx2fc_free_fw_resc(hba);
2163                 return -ENOMEM;
2164         }
2165
2166         return 0;
2167 }
2168
2169 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
2170 {
2171         u32 mem_size;
2172
2173         if (hba->stats_buffer) {
2174                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2175                                   hba->stats_buffer, hba->stats_buf_dma);
2176                 hba->stats_buffer = NULL;
2177         }
2178
2179         if (hba->dummy_buffer) {
2180                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2181                                   hba->dummy_buffer, hba->dummy_buf_dma);
2182                 hba->dummy_buffer = NULL;
2183         }
2184
2185         if (hba->t2_hash_tbl_ptr) {
2186                 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2187                 dma_free_coherent(&hba->pcidev->dev, mem_size,
2188                                     hba->t2_hash_tbl_ptr,
2189                                     hba->t2_hash_tbl_ptr_dma);
2190                 hba->t2_hash_tbl_ptr = NULL;
2191         }
2192
2193         if (hba->t2_hash_tbl) {
2194                 mem_size = BNX2FC_NUM_MAX_SESS *
2195                             sizeof(struct fcoe_t2_hash_table_entry);
2196                 dma_free_coherent(&hba->pcidev->dev, mem_size,
2197                                     hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
2198                 hba->t2_hash_tbl = NULL;
2199         }
2200         bnx2fc_free_hash_table(hba);
2201 }