1 /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. 2 * 3 * Copyright (c) 2006 - 2009 Broadcom Corporation 4 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. 5 * Copyright (c) 2007, 2008 Mike Christie 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation. 10 * 11 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com) 12 */ 13 14 #include <scsi/scsi_tcq.h> 15 #include <scsi/libiscsi.h> 16 #include "bnx2i.h" 17 18 /** 19 * bnx2i_get_cid_num - get cid from ep 20 * @ep: endpoint pointer 21 * 22 * Only applicable to 57710 family of devices 23 */ 24 static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) 25 { 26 u32 cid; 27 28 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 29 cid = ep->ep_cid; 30 else 31 cid = GET_CID_NUM(ep->ep_cid); 32 return cid; 33 } 34 35 36 /** 37 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type 38 * @hba: Adapter for which adjustments is to be made 39 * 40 * Only applicable to 57710 family of devices 41 */ 42 static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) 43 { 44 u32 num_elements_per_pg; 45 46 if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || 47 test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || 48 test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { 49 if (!is_power_of_2(hba->max_sqes)) 50 hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); 51 52 if (!is_power_of_2(hba->max_rqes)) 53 hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); 54 } 55 56 /* Adjust each queue size if the user selection does not 57 * yield integral num of page buffers 58 */ 59 /* adjust SQ */ 60 num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 61 if (hba->max_sqes < num_elements_per_pg) 62 hba->max_sqes = num_elements_per_pg; 63 else if (hba->max_sqes % num_elements_per_pg) 64 hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & 65 ~(num_elements_per_pg - 1); 66 67 /* adjust CQ */ 68 num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; 69 if (hba->max_cqes < num_elements_per_pg) 70 hba->max_cqes = num_elements_per_pg; 71 else if (hba->max_cqes % num_elements_per_pg) 72 hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & 73 ~(num_elements_per_pg - 1); 74 75 /* adjust RQ */ 76 num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; 77 if (hba->max_rqes < num_elements_per_pg) 78 hba->max_rqes = num_elements_per_pg; 79 else if (hba->max_rqes % num_elements_per_pg) 80 hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & 81 ~(num_elements_per_pg - 1); 82 } 83 84 85 /** 86 * bnx2i_get_link_state - get network interface link state 87 * @hba: adapter instance pointer 88 * 89 * updates adapter structure flag based on netdev state 90 */ 91 static void bnx2i_get_link_state(struct bnx2i_hba *hba) 92 { 93 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) 94 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 95 else 96 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 97 } 98 99 100 /** 101 * bnx2i_iscsi_license_error - displays iscsi license related error message 102 * @hba: adapter instance pointer 103 * @error_code: error classification 104 * 105 * Puts out an error log when driver is unable to offload iscsi connection 106 * due to license restrictions 107 */ 108 static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) 109 { 110 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) 111 /* iSCSI offload not supported on this device */ 112 printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", 113 hba->netdev->name); 114 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) 115 /* iSCSI offload not supported on this LOM device */ 116 printk(KERN_ERR "bnx2i: LOM is not enable to " 117 "offload iSCSI connections, dev=%s\n", 118 hba->netdev->name); 119 set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); 120 } 121 122 123 /** 124 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification 125 * @ep: endpoint (transport indentifier) structure 126 * @action: action, ARM or DISARM. For now only ARM_CQE is used 127 * 128 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt 129 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is 130 * outstanding and on chip timer expires 131 */ 132 void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) 133 { 134 struct bnx2i_5771x_cq_db *cq_db; 135 u16 cq_index; 136 137 if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 138 return; 139 140 if (action == CNIC_ARM_CQE) { 141 cq_index = ep->qp.cqe_exp_seq_sn + 142 ep->num_active_cmds / event_coal_div; 143 cq_index %= (ep->qp.cqe_size * 2 + 1); 144 if (!cq_index) { 145 cq_index = 1; 146 cq_db = (struct bnx2i_5771x_cq_db *) 147 ep->qp.cq_pgtbl_virt; 148 cq_db->sqn[0] = cq_index; 149 } 150 } 151 } 152 153 154 /** 155 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer 156 * @conn: iscsi connection on which RQ event occured 157 * @ptr: driver buffer to which RQ buffer contents is to 158 * be copied 159 * @len: length of valid data inside RQ buf 160 * 161 * Copies RQ buffer contents from shared (DMA'able) memory region to 162 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and 163 * scsi sense info 164 */ 165 void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) 166 { 167 if (!bnx2i_conn->ep->qp.rqe_left) 168 return; 169 170 bnx2i_conn->ep->qp.rqe_left--; 171 memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); 172 if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { 173 bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; 174 bnx2i_conn->ep->qp.rq_cons_idx = 0; 175 } else { 176 bnx2i_conn->ep->qp.rq_cons_qe++; 177 bnx2i_conn->ep->qp.rq_cons_idx++; 178 } 179 } 180 181 182 static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) 183 { 184 struct bnx2i_5771x_dbell dbell; 185 u32 msg; 186 187 memset(&dbell, 0, sizeof(dbell)); 188 dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << 189 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); 190 msg = *((u32 *)&dbell); 191 /* TODO : get doorbell register mapping */ 192 writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); 193 } 194 195 196 /** 197 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell 198 * @conn: iscsi connection on which event to post 199 * @count: number of RQ buffer being posted to chip 200 * 201 * No need to ring hardware doorbell for 57710 family of devices 202 */ 203 void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) 204 { 205 struct bnx2i_5771x_sq_rq_db *rq_db; 206 u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); 207 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 208 209 ep->qp.rqe_left += count; 210 ep->qp.rq_prod_idx &= 0x7FFF; 211 ep->qp.rq_prod_idx += count; 212 213 if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { 214 ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; 215 if (!hi_bit) 216 ep->qp.rq_prod_idx |= 0x8000; 217 } else 218 ep->qp.rq_prod_idx |= hi_bit; 219 220 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 221 rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; 222 rq_db->prod_idx = ep->qp.rq_prod_idx; 223 /* no need to ring hardware doorbell for 57710 */ 224 } else { 225 writew(ep->qp.rq_prod_idx, 226 ep->qp.ctx_base + CNIC_RECV_DOORBELL); 227 } 228 mmiowb(); 229 } 230 231 232 /** 233 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine 234 * @conn: iscsi connection to which new SQ entries belong 235 * @count: number of SQ WQEs to post 236 * 237 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family 238 * of devices. For 5706/5708/5709 new SQ WQE count is written into the 239 * doorbell register 240 */ 241 static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) 242 { 243 struct bnx2i_5771x_sq_rq_db *sq_db; 244 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 245 246 ep->num_active_cmds++; 247 wmb(); /* flush SQ WQE memory before the doorbell is rung */ 248 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 249 sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; 250 sq_db->prod_idx = ep->qp.sq_prod_idx; 251 bnx2i_ring_577xx_doorbell(bnx2i_conn); 252 } else 253 writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); 254 255 mmiowb(); /* flush posted PCI writes */ 256 } 257 258 259 /** 260 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters 261 * @conn: iscsi connection to which new SQ entries belong 262 * @count: number of SQ WQEs to post 263 * 264 * this routine will update SQ driver parameters and ring the doorbell 265 */ 266 static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, 267 int count) 268 { 269 int tmp_cnt; 270 271 if (count == 1) { 272 if (bnx2i_conn->ep->qp.sq_prod_qe == 273 bnx2i_conn->ep->qp.sq_last_qe) 274 bnx2i_conn->ep->qp.sq_prod_qe = 275 bnx2i_conn->ep->qp.sq_first_qe; 276 else 277 bnx2i_conn->ep->qp.sq_prod_qe++; 278 } else { 279 if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= 280 bnx2i_conn->ep->qp.sq_last_qe) 281 bnx2i_conn->ep->qp.sq_prod_qe += count; 282 else { 283 tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - 284 bnx2i_conn->ep->qp.sq_prod_qe; 285 bnx2i_conn->ep->qp.sq_prod_qe = 286 &bnx2i_conn->ep->qp.sq_first_qe[count - 287 (tmp_cnt + 1)]; 288 } 289 } 290 bnx2i_conn->ep->qp.sq_prod_idx += count; 291 /* Ring the doorbell */ 292 bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); 293 } 294 295 296 /** 297 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware 298 * @conn: iscsi connection 299 * @cmd: driver command structure which is requesting 300 * a WQE to sent to chip for further processing 301 * 302 * prepare and post an iSCSI Login request WQE to CNIC firmware 303 */ 304 int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, 305 struct iscsi_task *task) 306 { 307 struct bnx2i_cmd *bnx2i_cmd; 308 struct bnx2i_login_request *login_wqe; 309 struct iscsi_login *login_hdr; 310 u32 dword; 311 312 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 313 login_hdr = (struct iscsi_login *)task->hdr; 314 login_wqe = (struct bnx2i_login_request *) 315 bnx2i_conn->ep->qp.sq_prod_qe; 316 317 login_wqe->op_code = login_hdr->opcode; 318 login_wqe->op_attr = login_hdr->flags; 319 login_wqe->version_max = login_hdr->max_version; 320 login_wqe->version_min = login_hdr->min_version; 321 login_wqe->data_length = ntoh24(login_hdr->dlength); 322 login_wqe->isid_lo = *((u32 *) login_hdr->isid); 323 login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); 324 login_wqe->tsih = login_hdr->tsih; 325 login_wqe->itt = task->itt | 326 (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); 327 login_wqe->cid = login_hdr->cid; 328 329 login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); 330 login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 331 332 login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; 333 login_wqe->resp_bd_list_addr_hi = 334 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); 335 336 dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | 337 (bnx2i_conn->gen_pdu.resp_buf_size << 338 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); 339 login_wqe->resp_buffer = dword; 340 login_wqe->flags = 0; 341 login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; 342 login_wqe->bd_list_addr_hi = 343 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); 344 login_wqe->num_bds = 1; 345 login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 346 347 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 348 return 0; 349 } 350 351 /** 352 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware 353 * @conn: iscsi connection 354 * @mtask: driver command structure which is requesting 355 * a WQE to sent to chip for further processing 356 * 357 * prepare and post an iSCSI Login request WQE to CNIC firmware 358 */ 359 int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, 360 struct iscsi_task *mtask) 361 { 362 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 363 struct iscsi_tm *tmfabort_hdr; 364 struct scsi_cmnd *ref_sc; 365 struct iscsi_task *ctask; 366 struct bnx2i_cmd *bnx2i_cmd; 367 struct bnx2i_tmf_request *tmfabort_wqe; 368 u32 dword; 369 370 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; 371 tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; 372 tmfabort_wqe = (struct bnx2i_tmf_request *) 373 bnx2i_conn->ep->qp.sq_prod_qe; 374 375 tmfabort_wqe->op_code = tmfabort_hdr->opcode; 376 tmfabort_wqe->op_attr = 0; 377 tmfabort_wqe->op_attr = 378 ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK; 379 tmfabort_wqe->lun[0] = be32_to_cpu(tmfabort_hdr->lun[0]); 380 tmfabort_wqe->lun[1] = be32_to_cpu(tmfabort_hdr->lun[1]); 381 382 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); 383 tmfabort_wqe->reserved2 = 0; 384 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); 385 386 ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); 387 if (!ctask || ctask->sc) 388 /* 389 * the iscsi layer must have completed the cmd while this 390 * was starting up. 391 */ 392 return 0; 393 ref_sc = ctask->sc; 394 395 if (ref_sc->sc_data_direction == DMA_TO_DEVICE) 396 dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT); 397 else 398 dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT); 399 tmfabort_wqe->ref_itt = (dword | tmfabort_hdr->rtt); 400 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); 401 402 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 403 tmfabort_wqe->bd_list_addr_hi = (u32) 404 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 405 tmfabort_wqe->num_bds = 1; 406 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 407 408 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 409 return 0; 410 } 411 412 /** 413 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware 414 * @conn: iscsi connection 415 * @cmd: driver command structure which is requesting 416 * a WQE to sent to chip for further processing 417 * 418 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware 419 */ 420 int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, 421 struct bnx2i_cmd *cmd) 422 { 423 struct bnx2i_cmd_request *scsi_cmd_wqe; 424 425 scsi_cmd_wqe = (struct bnx2i_cmd_request *) 426 bnx2i_conn->ep->qp.sq_prod_qe; 427 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); 428 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 429 430 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 431 return 0; 432 } 433 434 /** 435 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware 436 * @conn: iscsi connection 437 * @cmd: driver command structure which is requesting 438 * a WQE to sent to chip for further processing 439 * @ttt: TTT to be used when building pdu header 440 * @datap: payload buffer pointer 441 * @data_len: payload data length 442 * @unsol: indicated whether nopout pdu is unsolicited pdu or 443 * in response to target's NOPIN w/ TTT != FFFFFFFF 444 * 445 * prepare and post a nopout request WQE to CNIC firmware 446 */ 447 int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, 448 struct iscsi_task *task, u32 ttt, 449 char *datap, int data_len, int unsol) 450 { 451 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 452 struct bnx2i_cmd *bnx2i_cmd; 453 struct bnx2i_nop_out_request *nopout_wqe; 454 struct iscsi_nopout *nopout_hdr; 455 456 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 457 nopout_hdr = (struct iscsi_nopout *)task->hdr; 458 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; 459 nopout_wqe->op_code = nopout_hdr->opcode; 460 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; 461 memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); 462 463 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 464 u32 tmp = nopout_hdr->lun[0]; 465 /* 57710 requires LUN field to be swapped */ 466 nopout_hdr->lun[0] = nopout_hdr->lun[1]; 467 nopout_hdr->lun[1] = tmp; 468 } 469 470 nopout_wqe->itt = ((u16)task->itt | 471 (ISCSI_TASK_TYPE_MPATH << 472 ISCSI_TMF_REQUEST_TYPE_SHIFT)); 473 nopout_wqe->ttt = ttt; 474 nopout_wqe->flags = 0; 475 if (!unsol) 476 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 477 else if (nopout_hdr->itt == RESERVED_ITT) 478 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 479 480 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 481 nopout_wqe->data_length = data_len; 482 if (data_len) { 483 /* handle payload data, not required in first release */ 484 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); 485 } else { 486 nopout_wqe->bd_list_addr_lo = (u32) 487 bnx2i_conn->hba->mp_bd_dma; 488 nopout_wqe->bd_list_addr_hi = 489 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 490 nopout_wqe->num_bds = 1; 491 } 492 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 493 494 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 495 return 0; 496 } 497 498 499 /** 500 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware 501 * @conn: iscsi connection 502 * @cmd: driver command structure which is requesting 503 * a WQE to sent to chip for further processing 504 * 505 * prepare and post logout request WQE to CNIC firmware 506 */ 507 int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, 508 struct iscsi_task *task) 509 { 510 struct bnx2i_cmd *bnx2i_cmd; 511 struct bnx2i_logout_request *logout_wqe; 512 struct iscsi_logout *logout_hdr; 513 514 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 515 logout_hdr = (struct iscsi_logout *)task->hdr; 516 517 logout_wqe = (struct bnx2i_logout_request *) 518 bnx2i_conn->ep->qp.sq_prod_qe; 519 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); 520 521 logout_wqe->op_code = logout_hdr->opcode; 522 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 523 logout_wqe->op_attr = 524 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; 525 logout_wqe->itt = ((u16)task->itt | 526 (ISCSI_TASK_TYPE_MPATH << 527 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); 528 logout_wqe->data_length = 0; 529 logout_wqe->cid = 0; 530 531 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 532 logout_wqe->bd_list_addr_hi = (u32) 533 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 534 logout_wqe->num_bds = 1; 535 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 536 537 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 538 return 0; 539 } 540 541 542 /** 543 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware 544 * @conn: iscsi connection which requires iscsi parameter update 545 * 546 * sends down iSCSI Conn Update request to move iSCSI conn to FFP 547 */ 548 void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) 549 { 550 struct bnx2i_conn *bnx2i_conn = conn->dd_data; 551 struct bnx2i_hba *hba = bnx2i_conn->hba; 552 struct kwqe *kwqe_arr[2]; 553 struct iscsi_kwqe_conn_update *update_wqe; 554 struct iscsi_kwqe_conn_update conn_update_kwqe; 555 556 update_wqe = &conn_update_kwqe; 557 558 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; 559 update_wqe->hdr.flags = 560 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 561 562 /* 5771x requires conn context id to be passed as is */ 563 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) 564 update_wqe->context_id = bnx2i_conn->ep->ep_cid; 565 else 566 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); 567 update_wqe->conn_flags = 0; 568 if (conn->hdrdgst_en) 569 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; 570 if (conn->datadgst_en) 571 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; 572 if (conn->session->initial_r2t_en) 573 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; 574 if (conn->session->imm_data_en) 575 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; 576 577 update_wqe->max_send_pdu_length = conn->max_xmit_dlength; 578 update_wqe->max_recv_pdu_length = conn->max_recv_dlength; 579 update_wqe->first_burst_length = conn->session->first_burst; 580 update_wqe->max_burst_length = conn->session->max_burst; 581 update_wqe->exp_stat_sn = conn->exp_statsn; 582 update_wqe->max_outstanding_r2ts = conn->session->max_r2t; 583 update_wqe->session_error_recovery_level = conn->session->erl; 584 iscsi_conn_printk(KERN_ALERT, conn, 585 "bnx2i: conn update - MBL 0x%x FBL 0x%x" 586 "MRDSL_I 0x%x MRDSL_T 0x%x \n", 587 update_wqe->max_burst_length, 588 update_wqe->first_burst_length, 589 update_wqe->max_recv_pdu_length, 590 update_wqe->max_send_pdu_length); 591 592 kwqe_arr[0] = (struct kwqe *) update_wqe; 593 if (hba->cnic && hba->cnic->submit_kwqes) 594 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 595 } 596 597 598 /** 599 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware 600 * @data: endpoint (transport handle) structure pointer 601 * 602 * routine to handle connection offload/destroy request timeout 603 */ 604 void bnx2i_ep_ofld_timer(unsigned long data) 605 { 606 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; 607 608 if (ep->state == EP_STATE_OFLD_START) { 609 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); 610 ep->state = EP_STATE_OFLD_FAILED; 611 } else if (ep->state == EP_STATE_DISCONN_START) { 612 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); 613 ep->state = EP_STATE_DISCONN_TIMEDOUT; 614 } else if (ep->state == EP_STATE_CLEANUP_START) { 615 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); 616 ep->state = EP_STATE_CLEANUP_FAILED; 617 } 618 619 wake_up_interruptible(&ep->ofld_wait); 620 } 621 622 623 static int bnx2i_power_of2(u32 val) 624 { 625 u32 power = 0; 626 if (val & (val - 1)) 627 return power; 628 val--; 629 while (val) { 630 val = val >> 1; 631 power++; 632 } 633 return power; 634 } 635 636 637 /** 638 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request 639 * @hba: adapter structure pointer 640 * @cmd: driver command structure which is requesting 641 * a WQE to sent to chip for further processing 642 * 643 * prepares and posts CONN_OFLD_REQ1/2 KWQE 644 */ 645 void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) 646 { 647 struct bnx2i_cleanup_request *cmd_cleanup; 648 649 cmd_cleanup = 650 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; 651 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); 652 653 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; 654 cmd_cleanup->itt = cmd->req.itt; 655 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ 656 657 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); 658 } 659 660 661 /** 662 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process 663 * @hba: adapter structure pointer 664 * @ep: endpoint (transport indentifier) structure 665 * 666 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate 667 * iscsi connection context clean-up process 668 */ 669 void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 670 { 671 struct kwqe *kwqe_arr[2]; 672 struct iscsi_kwqe_conn_destroy conn_cleanup; 673 674 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); 675 676 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; 677 conn_cleanup.hdr.flags = 678 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 679 /* 5771x requires conn context id to be passed as is */ 680 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 681 conn_cleanup.context_id = ep->ep_cid; 682 else 683 conn_cleanup.context_id = (ep->ep_cid >> 7); 684 685 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; 686 687 kwqe_arr[0] = (struct kwqe *) &conn_cleanup; 688 if (hba->cnic && hba->cnic->submit_kwqes) 689 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 690 } 691 692 693 /** 694 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process 695 * @hba: adapter structure pointer 696 * @ep: endpoint (transport indentifier) structure 697 * 698 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 699 */ 700 static void bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, 701 struct bnx2i_endpoint *ep) 702 { 703 struct kwqe *kwqe_arr[2]; 704 struct iscsi_kwqe_conn_offload1 ofld_req1; 705 struct iscsi_kwqe_conn_offload2 ofld_req2; 706 dma_addr_t dma_addr; 707 int num_kwqes = 2; 708 u32 *ptbl; 709 710 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 711 ofld_req1.hdr.flags = 712 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 713 714 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 715 716 dma_addr = ep->qp.sq_pgtbl_phys; 717 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 718 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 719 720 dma_addr = ep->qp.cq_pgtbl_phys; 721 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 722 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 723 724 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 725 ofld_req2.hdr.flags = 726 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 727 728 dma_addr = ep->qp.rq_pgtbl_phys; 729 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 730 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 731 732 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 733 734 ofld_req2.sq_first_pte.hi = *ptbl++; 735 ofld_req2.sq_first_pte.lo = *ptbl; 736 737 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 738 ofld_req2.cq_first_pte.hi = *ptbl++; 739 ofld_req2.cq_first_pte.lo = *ptbl; 740 741 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 742 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 743 ofld_req2.num_additional_wqes = 0; 744 745 if (hba->cnic && hba->cnic->submit_kwqes) 746 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 747 } 748 749 750 /** 751 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation 752 * @hba: adapter structure pointer 753 * @ep: endpoint (transport indentifier) structure 754 * 755 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 756 */ 757 static void bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, 758 struct bnx2i_endpoint *ep) 759 { 760 struct kwqe *kwqe_arr[5]; 761 struct iscsi_kwqe_conn_offload1 ofld_req1; 762 struct iscsi_kwqe_conn_offload2 ofld_req2; 763 struct iscsi_kwqe_conn_offload3 ofld_req3[1]; 764 dma_addr_t dma_addr; 765 int num_kwqes = 2; 766 u32 *ptbl; 767 768 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 769 ofld_req1.hdr.flags = 770 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 771 772 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 773 774 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; 775 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 776 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 777 778 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; 779 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 780 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 781 782 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 783 ofld_req2.hdr.flags = 784 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 785 786 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; 787 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 788 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 789 790 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 791 ofld_req2.sq_first_pte.hi = *ptbl++; 792 ofld_req2.sq_first_pte.lo = *ptbl; 793 794 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 795 ofld_req2.cq_first_pte.hi = *ptbl++; 796 ofld_req2.cq_first_pte.lo = *ptbl; 797 798 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 799 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 800 801 ofld_req2.num_additional_wqes = 1; 802 memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); 803 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 804 ofld_req3[0].qp_first_pte[0].hi = *ptbl++; 805 ofld_req3[0].qp_first_pte[0].lo = *ptbl; 806 807 kwqe_arr[2] = (struct kwqe *) ofld_req3; 808 /* need if we decide to go with multiple KCQE's per conn */ 809 num_kwqes += 1; 810 811 if (hba->cnic && hba->cnic->submit_kwqes) 812 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 813 } 814 815 /** 816 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process 817 * 818 * @hba: adapter structure pointer 819 * @ep: endpoint (transport indentifier) structure 820 * 821 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE 822 */ 823 void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 824 { 825 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) 826 bnx2i_5771x_send_conn_ofld_req(hba, ep); 827 else 828 bnx2i_570x_send_conn_ofld_req(hba, ep); 829 } 830 831 832 /** 833 * setup_qp_page_tables - iscsi QP page table setup function 834 * @ep: endpoint (transport indentifier) structure 835 * 836 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires 837 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires 838 * PT in little endian format 839 */ 840 static void setup_qp_page_tables(struct bnx2i_endpoint *ep) 841 { 842 int num_pages; 843 u32 *ptbl; 844 dma_addr_t page; 845 int cnic_dev_10g; 846 847 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 848 cnic_dev_10g = 1; 849 else 850 cnic_dev_10g = 0; 851 852 /* SQ page table */ 853 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); 854 num_pages = ep->qp.sq_mem_size / PAGE_SIZE; 855 page = ep->qp.sq_phys; 856 857 if (cnic_dev_10g) 858 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 859 else 860 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 861 while (num_pages--) { 862 if (cnic_dev_10g) { 863 /* PTE is written in little endian format for 57710 */ 864 *ptbl = (u32) page; 865 ptbl++; 866 *ptbl = (u32) ((u64) page >> 32); 867 ptbl++; 868 page += PAGE_SIZE; 869 } else { 870 /* PTE is written in big endian format for 871 * 5706/5708/5709 devices */ 872 *ptbl = (u32) ((u64) page >> 32); 873 ptbl++; 874 *ptbl = (u32) page; 875 ptbl++; 876 page += PAGE_SIZE; 877 } 878 } 879 880 /* RQ page table */ 881 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); 882 num_pages = ep->qp.rq_mem_size / PAGE_SIZE; 883 page = ep->qp.rq_phys; 884 885 if (cnic_dev_10g) 886 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 887 else 888 ptbl = (u32 *) ep->qp.rq_pgtbl_virt; 889 while (num_pages--) { 890 if (cnic_dev_10g) { 891 /* PTE is written in little endian format for 57710 */ 892 *ptbl = (u32) page; 893 ptbl++; 894 *ptbl = (u32) ((u64) page >> 32); 895 ptbl++; 896 page += PAGE_SIZE; 897 } else { 898 /* PTE is written in big endian format for 899 * 5706/5708/5709 devices */ 900 *ptbl = (u32) ((u64) page >> 32); 901 ptbl++; 902 *ptbl = (u32) page; 903 ptbl++; 904 page += PAGE_SIZE; 905 } 906 } 907 908 /* CQ page table */ 909 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); 910 num_pages = ep->qp.cq_mem_size / PAGE_SIZE; 911 page = ep->qp.cq_phys; 912 913 if (cnic_dev_10g) 914 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 915 else 916 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 917 while (num_pages--) { 918 if (cnic_dev_10g) { 919 /* PTE is written in little endian format for 57710 */ 920 *ptbl = (u32) page; 921 ptbl++; 922 *ptbl = (u32) ((u64) page >> 32); 923 ptbl++; 924 page += PAGE_SIZE; 925 } else { 926 /* PTE is written in big endian format for 927 * 5706/5708/5709 devices */ 928 *ptbl = (u32) ((u64) page >> 32); 929 ptbl++; 930 *ptbl = (u32) page; 931 ptbl++; 932 page += PAGE_SIZE; 933 } 934 } 935 } 936 937 938 /** 939 * bnx2i_alloc_qp_resc - allocates required resources for QP. 940 * @hba: adapter structure pointer 941 * @ep: endpoint (transport indentifier) structure 942 * 943 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able 944 * memory for SQ/RQ/CQ and page tables. EP structure elements such 945 * as producer/consumer indexes/pointers, queue sizes and page table 946 * contents are setup 947 */ 948 int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 949 { 950 struct bnx2i_5771x_cq_db *cq_db; 951 952 ep->hba = hba; 953 ep->conn = NULL; 954 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; 955 956 /* Allocate page table memory for SQ which is page aligned */ 957 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; 958 ep->qp.sq_mem_size = 959 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 960 ep->qp.sq_pgtbl_size = 961 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); 962 ep->qp.sq_pgtbl_size = 963 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 964 965 ep->qp.sq_pgtbl_virt = 966 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 967 &ep->qp.sq_pgtbl_phys, GFP_KERNEL); 968 if (!ep->qp.sq_pgtbl_virt) { 969 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", 970 ep->qp.sq_pgtbl_size); 971 goto mem_alloc_err; 972 } 973 974 /* Allocate memory area for actual SQ element */ 975 ep->qp.sq_virt = 976 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 977 &ep->qp.sq_phys, GFP_KERNEL); 978 if (!ep->qp.sq_virt) { 979 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", 980 ep->qp.sq_mem_size); 981 goto mem_alloc_err; 982 } 983 984 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); 985 ep->qp.sq_first_qe = ep->qp.sq_virt; 986 ep->qp.sq_prod_qe = ep->qp.sq_first_qe; 987 ep->qp.sq_cons_qe = ep->qp.sq_first_qe; 988 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; 989 ep->qp.sq_prod_idx = 0; 990 ep->qp.sq_cons_idx = 0; 991 ep->qp.sqe_left = hba->max_sqes; 992 993 /* Allocate page table memory for CQ which is page aligned */ 994 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; 995 ep->qp.cq_mem_size = 996 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 997 ep->qp.cq_pgtbl_size = 998 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); 999 ep->qp.cq_pgtbl_size = 1000 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1001 1002 ep->qp.cq_pgtbl_virt = 1003 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1004 &ep->qp.cq_pgtbl_phys, GFP_KERNEL); 1005 if (!ep->qp.cq_pgtbl_virt) { 1006 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", 1007 ep->qp.cq_pgtbl_size); 1008 goto mem_alloc_err; 1009 } 1010 1011 /* Allocate memory area for actual CQ element */ 1012 ep->qp.cq_virt = 1013 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1014 &ep->qp.cq_phys, GFP_KERNEL); 1015 if (!ep->qp.cq_virt) { 1016 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", 1017 ep->qp.cq_mem_size); 1018 goto mem_alloc_err; 1019 } 1020 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); 1021 1022 ep->qp.cq_first_qe = ep->qp.cq_virt; 1023 ep->qp.cq_prod_qe = ep->qp.cq_first_qe; 1024 ep->qp.cq_cons_qe = ep->qp.cq_first_qe; 1025 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; 1026 ep->qp.cq_prod_idx = 0; 1027 ep->qp.cq_cons_idx = 0; 1028 ep->qp.cqe_left = hba->max_cqes; 1029 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1030 ep->qp.cqe_size = hba->max_cqes; 1031 1032 /* Invalidate all EQ CQE index, req only for 57710 */ 1033 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 1034 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); 1035 1036 /* Allocate page table memory for RQ which is page aligned */ 1037 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; 1038 ep->qp.rq_mem_size = 1039 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1040 ep->qp.rq_pgtbl_size = 1041 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); 1042 ep->qp.rq_pgtbl_size = 1043 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1044 1045 ep->qp.rq_pgtbl_virt = 1046 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1047 &ep->qp.rq_pgtbl_phys, GFP_KERNEL); 1048 if (!ep->qp.rq_pgtbl_virt) { 1049 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", 1050 ep->qp.rq_pgtbl_size); 1051 goto mem_alloc_err; 1052 } 1053 1054 /* Allocate memory area for actual RQ element */ 1055 ep->qp.rq_virt = 1056 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1057 &ep->qp.rq_phys, GFP_KERNEL); 1058 if (!ep->qp.rq_virt) { 1059 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", 1060 ep->qp.rq_mem_size); 1061 goto mem_alloc_err; 1062 } 1063 1064 ep->qp.rq_first_qe = ep->qp.rq_virt; 1065 ep->qp.rq_prod_qe = ep->qp.rq_first_qe; 1066 ep->qp.rq_cons_qe = ep->qp.rq_first_qe; 1067 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; 1068 ep->qp.rq_prod_idx = 0x8000; 1069 ep->qp.rq_cons_idx = 0; 1070 ep->qp.rqe_left = hba->max_rqes; 1071 1072 setup_qp_page_tables(ep); 1073 1074 return 0; 1075 1076 mem_alloc_err: 1077 bnx2i_free_qp_resc(hba, ep); 1078 return -ENOMEM; 1079 } 1080 1081 1082 1083 /** 1084 * bnx2i_free_qp_resc - free memory resources held by QP 1085 * @hba: adapter structure pointer 1086 * @ep: endpoint (transport indentifier) structure 1087 * 1088 * Free QP resources - SQ/RQ/CQ memory and page tables. 1089 */ 1090 void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1091 { 1092 if (ep->qp.ctx_base) { 1093 iounmap(ep->qp.ctx_base); 1094 ep->qp.ctx_base = NULL; 1095 } 1096 /* Free SQ mem */ 1097 if (ep->qp.sq_pgtbl_virt) { 1098 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1099 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); 1100 ep->qp.sq_pgtbl_virt = NULL; 1101 ep->qp.sq_pgtbl_phys = 0; 1102 } 1103 if (ep->qp.sq_virt) { 1104 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1105 ep->qp.sq_virt, ep->qp.sq_phys); 1106 ep->qp.sq_virt = NULL; 1107 ep->qp.sq_phys = 0; 1108 } 1109 1110 /* Free RQ mem */ 1111 if (ep->qp.rq_pgtbl_virt) { 1112 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1113 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); 1114 ep->qp.rq_pgtbl_virt = NULL; 1115 ep->qp.rq_pgtbl_phys = 0; 1116 } 1117 if (ep->qp.rq_virt) { 1118 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1119 ep->qp.rq_virt, ep->qp.rq_phys); 1120 ep->qp.rq_virt = NULL; 1121 ep->qp.rq_phys = 0; 1122 } 1123 1124 /* Free CQ mem */ 1125 if (ep->qp.cq_pgtbl_virt) { 1126 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1127 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); 1128 ep->qp.cq_pgtbl_virt = NULL; 1129 ep->qp.cq_pgtbl_phys = 0; 1130 } 1131 if (ep->qp.cq_virt) { 1132 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1133 ep->qp.cq_virt, ep->qp.cq_phys); 1134 ep->qp.cq_virt = NULL; 1135 ep->qp.cq_phys = 0; 1136 } 1137 } 1138 1139 1140 /** 1141 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w 1142 * @hba: adapter structure pointer 1143 * 1144 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w 1145 * This results in iSCSi support validation and on-chip context manager 1146 * initialization. Firmware completes this handshake with a CQE carrying 1147 * the result of iscsi support validation. Parameter carried by 1148 * iscsi init request determines the number of offloaded connection and 1149 * tolerance level for iscsi protocol violation this hba/chip can support 1150 */ 1151 int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) 1152 { 1153 struct kwqe *kwqe_arr[3]; 1154 struct iscsi_kwqe_init1 iscsi_init; 1155 struct iscsi_kwqe_init2 iscsi_init2; 1156 int rc = 0; 1157 u64 mask64; 1158 1159 bnx2i_adjust_qp_size(hba); 1160 1161 iscsi_init.flags = 1162 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; 1163 if (en_tcp_dack) 1164 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; 1165 iscsi_init.reserved0 = 0; 1166 iscsi_init.num_cqs = 1; 1167 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; 1168 iscsi_init.hdr.flags = 1169 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1170 1171 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; 1172 iscsi_init.dummy_buffer_addr_hi = 1173 (u32) ((u64) hba->dummy_buf_dma >> 32); 1174 1175 hba->ctx_ccell_tasks = 1176 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); 1177 iscsi_init.num_ccells_per_conn = hba->num_ccell; 1178 iscsi_init.num_tasks_per_conn = hba->max_sqes; 1179 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 1180 iscsi_init.sq_num_wqes = hba->max_sqes; 1181 iscsi_init.cq_log_wqes_per_page = 1182 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); 1183 iscsi_init.cq_num_wqes = hba->max_cqes; 1184 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + 1185 (PAGE_SIZE - 1)) / PAGE_SIZE; 1186 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + 1187 (PAGE_SIZE - 1)) / PAGE_SIZE; 1188 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; 1189 iscsi_init.rq_num_wqes = hba->max_rqes; 1190 1191 1192 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; 1193 iscsi_init2.hdr.flags = 1194 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1195 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; 1196 mask64 = 0x0ULL; 1197 mask64 |= ( 1198 /* CISCO MDS */ 1199 (1UL << 1200 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | 1201 /* HP MSA1510i */ 1202 (1UL << 1203 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | 1204 /* EMC */ 1205 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); 1206 if (error_mask1) 1207 iscsi_init2.error_bit_map[0] = error_mask1; 1208 else 1209 iscsi_init2.error_bit_map[0] = (u32) mask64; 1210 1211 if (error_mask2) 1212 iscsi_init2.error_bit_map[1] = error_mask2; 1213 else 1214 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); 1215 1216 iscsi_error_mask = mask64; 1217 1218 kwqe_arr[0] = (struct kwqe *) &iscsi_init; 1219 kwqe_arr[1] = (struct kwqe *) &iscsi_init2; 1220 1221 if (hba->cnic && hba->cnic->submit_kwqes) 1222 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); 1223 return rc; 1224 } 1225 1226 1227 /** 1228 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. 1229 * @conn: iscsi connection 1230 * @cqe: pointer to newly DMA'ed CQE entry for processing 1231 * 1232 * process SCSI CMD Response CQE & complete the request to SCSI-ML 1233 */ 1234 static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, 1235 struct bnx2i_conn *bnx2i_conn, 1236 struct cqe *cqe) 1237 { 1238 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1239 struct bnx2i_cmd_response *resp_cqe; 1240 struct bnx2i_cmd *bnx2i_cmd; 1241 struct iscsi_task *task; 1242 struct iscsi_cmd_rsp *hdr; 1243 u32 datalen = 0; 1244 1245 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1246 spin_lock(&session->lock); 1247 task = iscsi_itt_to_task(conn, 1248 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); 1249 if (!task) 1250 goto fail; 1251 1252 bnx2i_cmd = task->dd_data; 1253 1254 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { 1255 conn->datain_pdus_cnt += 1256 resp_cqe->task_stat.read_stat.num_data_outs; 1257 conn->rxdata_octets += 1258 bnx2i_cmd->req.total_data_transfer_length; 1259 } else { 1260 conn->dataout_pdus_cnt += 1261 resp_cqe->task_stat.read_stat.num_data_outs; 1262 conn->r2t_pdus_cnt += 1263 resp_cqe->task_stat.read_stat.num_r2ts; 1264 conn->txdata_octets += 1265 bnx2i_cmd->req.total_data_transfer_length; 1266 } 1267 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); 1268 1269 hdr = (struct iscsi_cmd_rsp *)task->hdr; 1270 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1271 hdr->opcode = resp_cqe->op_code; 1272 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); 1273 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); 1274 hdr->response = resp_cqe->response; 1275 hdr->cmd_status = resp_cqe->status; 1276 hdr->flags = resp_cqe->response_flags; 1277 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); 1278 1279 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) 1280 goto done; 1281 1282 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { 1283 datalen = resp_cqe->data_length; 1284 if (datalen < 2) 1285 goto done; 1286 1287 if (datalen > BNX2I_RQ_WQE_SIZE) { 1288 iscsi_conn_printk(KERN_ERR, conn, 1289 "sense data len %d > RQ sz\n", 1290 datalen); 1291 datalen = BNX2I_RQ_WQE_SIZE; 1292 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { 1293 iscsi_conn_printk(KERN_ERR, conn, 1294 "sense data len %d > conn data\n", 1295 datalen); 1296 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; 1297 } 1298 1299 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); 1300 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); 1301 } 1302 1303 done: 1304 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 1305 conn->data, datalen); 1306 fail: 1307 spin_unlock(&session->lock); 1308 return 0; 1309 } 1310 1311 1312 /** 1313 * bnx2i_process_login_resp - this function handles iscsi login response 1314 * @session: iscsi session pointer 1315 * @bnx2i_conn: iscsi connection pointer 1316 * @cqe: pointer to newly DMA'ed CQE entry for processing 1317 * 1318 * process Login Response CQE & complete it to open-iscsi user daemon 1319 */ 1320 static int bnx2i_process_login_resp(struct iscsi_session *session, 1321 struct bnx2i_conn *bnx2i_conn, 1322 struct cqe *cqe) 1323 { 1324 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1325 struct iscsi_task *task; 1326 struct bnx2i_login_response *login; 1327 struct iscsi_login_rsp *resp_hdr; 1328 int pld_len; 1329 int pad_len; 1330 1331 login = (struct bnx2i_login_response *) cqe; 1332 spin_lock(&session->lock); 1333 task = iscsi_itt_to_task(conn, 1334 login->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1335 if (!task) 1336 goto done; 1337 1338 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1339 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1340 resp_hdr->opcode = login->op_code; 1341 resp_hdr->flags = login->response_flags; 1342 resp_hdr->max_version = login->version_max; 1343 resp_hdr->active_version = login->version_active; 1344 resp_hdr->hlength = 0; 1345 1346 hton24(resp_hdr->dlength, login->data_length); 1347 memcpy(resp_hdr->isid, &login->isid_lo, 6); 1348 resp_hdr->tsih = cpu_to_be16(login->tsih); 1349 resp_hdr->itt = task->hdr->itt; 1350 resp_hdr->statsn = cpu_to_be32(login->stat_sn); 1351 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); 1352 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); 1353 resp_hdr->status_class = login->status_class; 1354 resp_hdr->status_detail = login->status_detail; 1355 pld_len = login->data_length; 1356 bnx2i_conn->gen_pdu.resp_wr_ptr = 1357 bnx2i_conn->gen_pdu.resp_buf + pld_len; 1358 1359 pad_len = 0; 1360 if (pld_len & 0x3) 1361 pad_len = 4 - (pld_len % 4); 1362 1363 if (pad_len) { 1364 int i = 0; 1365 for (i = 0; i < pad_len; i++) { 1366 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1367 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1368 } 1369 } 1370 1371 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1372 bnx2i_conn->gen_pdu.resp_buf, 1373 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); 1374 done: 1375 spin_unlock(&session->lock); 1376 return 0; 1377 } 1378 1379 /** 1380 * bnx2i_process_tmf_resp - this function handles iscsi TMF response 1381 * @session: iscsi session pointer 1382 * @bnx2i_conn: iscsi connection pointer 1383 * @cqe: pointer to newly DMA'ed CQE entry for processing 1384 * 1385 * process iSCSI TMF Response CQE and wake up the driver eh thread. 1386 */ 1387 static int bnx2i_process_tmf_resp(struct iscsi_session *session, 1388 struct bnx2i_conn *bnx2i_conn, 1389 struct cqe *cqe) 1390 { 1391 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1392 struct iscsi_task *task; 1393 struct bnx2i_tmf_response *tmf_cqe; 1394 struct iscsi_tm_rsp *resp_hdr; 1395 1396 tmf_cqe = (struct bnx2i_tmf_response *)cqe; 1397 spin_lock(&session->lock); 1398 task = iscsi_itt_to_task(conn, 1399 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); 1400 if (!task) 1401 goto done; 1402 1403 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1404 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1405 resp_hdr->opcode = tmf_cqe->op_code; 1406 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); 1407 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); 1408 resp_hdr->itt = task->hdr->itt; 1409 resp_hdr->response = tmf_cqe->response; 1410 1411 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1412 done: 1413 spin_unlock(&session->lock); 1414 return 0; 1415 } 1416 1417 /** 1418 * bnx2i_process_logout_resp - this function handles iscsi logout response 1419 * @session: iscsi session pointer 1420 * @bnx2i_conn: iscsi connection pointer 1421 * @cqe: pointer to newly DMA'ed CQE entry for processing 1422 * 1423 * process iSCSI Logout Response CQE & make function call to 1424 * notify the user daemon. 1425 */ 1426 static int bnx2i_process_logout_resp(struct iscsi_session *session, 1427 struct bnx2i_conn *bnx2i_conn, 1428 struct cqe *cqe) 1429 { 1430 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1431 struct iscsi_task *task; 1432 struct bnx2i_logout_response *logout; 1433 struct iscsi_logout_rsp *resp_hdr; 1434 1435 logout = (struct bnx2i_logout_response *) cqe; 1436 spin_lock(&session->lock); 1437 task = iscsi_itt_to_task(conn, 1438 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); 1439 if (!task) 1440 goto done; 1441 1442 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1443 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1444 resp_hdr->opcode = logout->op_code; 1445 resp_hdr->flags = logout->response; 1446 resp_hdr->hlength = 0; 1447 1448 resp_hdr->itt = task->hdr->itt; 1449 resp_hdr->statsn = task->hdr->exp_statsn; 1450 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); 1451 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); 1452 1453 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); 1454 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); 1455 1456 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1457 done: 1458 spin_unlock(&session->lock); 1459 return 0; 1460 } 1461 1462 /** 1463 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE 1464 * @session: iscsi session pointer 1465 * @bnx2i_conn: iscsi connection pointer 1466 * @cqe: pointer to newly DMA'ed CQE entry for processing 1467 * 1468 * process iSCSI NOPIN local completion CQE, frees IIT and command structures 1469 */ 1470 static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, 1471 struct bnx2i_conn *bnx2i_conn, 1472 struct cqe *cqe) 1473 { 1474 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1475 struct bnx2i_nop_in_msg *nop_in; 1476 struct iscsi_task *task; 1477 1478 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1479 spin_lock(&session->lock); 1480 task = iscsi_itt_to_task(conn, 1481 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); 1482 if (task) 1483 iscsi_put_task(task); 1484 spin_unlock(&session->lock); 1485 } 1486 1487 /** 1488 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd 1489 * @conn: iscsi connection 1490 * 1491 * Firmware advances RQ producer index for every unsolicited PDU even if 1492 * payload data length is '0'. This function makes corresponding 1493 * adjustments on the driver side to match this f/w behavior 1494 */ 1495 static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) 1496 { 1497 char dummy_rq_data[2]; 1498 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); 1499 bnx2i_put_rq_buf(bnx2i_conn, 1); 1500 } 1501 1502 1503 /** 1504 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE 1505 * @session: iscsi session pointer 1506 * @bnx2i_conn: iscsi connection pointer 1507 * @cqe: pointer to newly DMA'ed CQE entry for processing 1508 * 1509 * process iSCSI target's proactive iSCSI NOPIN request 1510 */ 1511 static int bnx2i_process_nopin_mesg(struct iscsi_session *session, 1512 struct bnx2i_conn *bnx2i_conn, 1513 struct cqe *cqe) 1514 { 1515 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1516 struct iscsi_task *task; 1517 struct bnx2i_nop_in_msg *nop_in; 1518 struct iscsi_nopin *hdr; 1519 u32 itt; 1520 int tgt_async_nop = 0; 1521 1522 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1523 itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX; 1524 1525 spin_lock(&session->lock); 1526 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; 1527 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1528 hdr->opcode = nop_in->op_code; 1529 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); 1530 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); 1531 hdr->ttt = cpu_to_be32(nop_in->ttt); 1532 1533 if (itt == (u16) RESERVED_ITT) { 1534 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1535 hdr->itt = RESERVED_ITT; 1536 tgt_async_nop = 1; 1537 goto done; 1538 } 1539 1540 /* this is a response to one of our nop-outs */ 1541 task = iscsi_itt_to_task(conn, itt); 1542 if (task) { 1543 hdr->flags = ISCSI_FLAG_CMD_FINAL; 1544 hdr->itt = task->hdr->itt; 1545 hdr->ttt = cpu_to_be32(nop_in->ttt); 1546 memcpy(hdr->lun, nop_in->lun, 8); 1547 } 1548 done: 1549 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); 1550 spin_unlock(&session->lock); 1551 1552 return tgt_async_nop; 1553 } 1554 1555 1556 /** 1557 * bnx2i_process_async_mesg - this function handles iscsi async message 1558 * @session: iscsi session pointer 1559 * @bnx2i_conn: iscsi connection pointer 1560 * @cqe: pointer to newly DMA'ed CQE entry for processing 1561 * 1562 * process iSCSI ASYNC Message 1563 */ 1564 static void bnx2i_process_async_mesg(struct iscsi_session *session, 1565 struct bnx2i_conn *bnx2i_conn, 1566 struct cqe *cqe) 1567 { 1568 struct bnx2i_async_msg *async_cqe; 1569 struct iscsi_async *resp_hdr; 1570 u8 async_event; 1571 1572 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1573 1574 async_cqe = (struct bnx2i_async_msg *)cqe; 1575 async_event = async_cqe->async_event; 1576 1577 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { 1578 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, 1579 "async: scsi events not supported\n"); 1580 return; 1581 } 1582 1583 spin_lock(&session->lock); 1584 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; 1585 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1586 resp_hdr->opcode = async_cqe->op_code; 1587 resp_hdr->flags = 0x80; 1588 1589 memcpy(resp_hdr->lun, async_cqe->lun, 8); 1590 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); 1591 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); 1592 1593 resp_hdr->async_event = async_cqe->async_event; 1594 resp_hdr->async_vcode = async_cqe->async_vcode; 1595 1596 resp_hdr->param1 = cpu_to_be16(async_cqe->param1); 1597 resp_hdr->param2 = cpu_to_be16(async_cqe->param2); 1598 resp_hdr->param3 = cpu_to_be16(async_cqe->param3); 1599 1600 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, 1601 (struct iscsi_hdr *)resp_hdr, NULL, 0); 1602 spin_unlock(&session->lock); 1603 } 1604 1605 1606 /** 1607 * bnx2i_process_reject_mesg - process iscsi reject pdu 1608 * @session: iscsi session pointer 1609 * @bnx2i_conn: iscsi connection pointer 1610 * @cqe: pointer to newly DMA'ed CQE entry for processing 1611 * 1612 * process iSCSI REJECT message 1613 */ 1614 static void bnx2i_process_reject_mesg(struct iscsi_session *session, 1615 struct bnx2i_conn *bnx2i_conn, 1616 struct cqe *cqe) 1617 { 1618 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1619 struct bnx2i_reject_msg *reject; 1620 struct iscsi_reject *hdr; 1621 1622 reject = (struct bnx2i_reject_msg *) cqe; 1623 if (reject->data_length) { 1624 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); 1625 bnx2i_put_rq_buf(bnx2i_conn, 1); 1626 } else 1627 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1628 1629 spin_lock(&session->lock); 1630 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; 1631 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1632 hdr->opcode = reject->op_code; 1633 hdr->reason = reject->reason; 1634 hton24(hdr->dlength, reject->data_length); 1635 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); 1636 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); 1637 hdr->ffffffff = cpu_to_be32(RESERVED_ITT); 1638 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, 1639 reject->data_length); 1640 spin_unlock(&session->lock); 1641 } 1642 1643 /** 1644 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion 1645 * @session: iscsi session pointer 1646 * @bnx2i_conn: iscsi connection pointer 1647 * @cqe: pointer to newly DMA'ed CQE entry for processing 1648 * 1649 * process command cleanup response CQE during conn shutdown or error recovery 1650 */ 1651 static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, 1652 struct bnx2i_conn *bnx2i_conn, 1653 struct cqe *cqe) 1654 { 1655 struct bnx2i_cleanup_response *cmd_clean_rsp; 1656 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1657 struct iscsi_task *task; 1658 1659 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; 1660 spin_lock(&session->lock); 1661 task = iscsi_itt_to_task(conn, 1662 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1663 if (!task) 1664 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", 1665 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1666 spin_unlock(&session->lock); 1667 complete(&bnx2i_conn->cmd_cleanup_cmpl); 1668 } 1669 1670 1671 1672 /** 1673 * bnx2i_process_new_cqes - process newly DMA'ed CQE's 1674 * @bnx2i_conn: iscsi connection 1675 * 1676 * this function is called by generic KCQ handler to process all pending CQE's 1677 */ 1678 static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) 1679 { 1680 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1681 struct iscsi_session *session = conn->session; 1682 struct qp_info *qp = &bnx2i_conn->ep->qp; 1683 struct bnx2i_nop_in_msg *nopin; 1684 int tgt_async_msg; 1685 1686 while (1) { 1687 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; 1688 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) 1689 break; 1690 1691 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) 1692 break; 1693 1694 tgt_async_msg = 0; 1695 1696 switch (nopin->op_code) { 1697 case ISCSI_OP_SCSI_CMD_RSP: 1698 case ISCSI_OP_SCSI_DATA_IN: 1699 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, 1700 qp->cq_cons_qe); 1701 break; 1702 case ISCSI_OP_LOGIN_RSP: 1703 bnx2i_process_login_resp(session, bnx2i_conn, 1704 qp->cq_cons_qe); 1705 break; 1706 case ISCSI_OP_SCSI_TMFUNC_RSP: 1707 bnx2i_process_tmf_resp(session, bnx2i_conn, 1708 qp->cq_cons_qe); 1709 break; 1710 case ISCSI_OP_LOGOUT_RSP: 1711 bnx2i_process_logout_resp(session, bnx2i_conn, 1712 qp->cq_cons_qe); 1713 break; 1714 case ISCSI_OP_NOOP_IN: 1715 if (bnx2i_process_nopin_mesg(session, bnx2i_conn, 1716 qp->cq_cons_qe)) 1717 tgt_async_msg = 1; 1718 break; 1719 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: 1720 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, 1721 qp->cq_cons_qe); 1722 break; 1723 case ISCSI_OP_ASYNC_EVENT: 1724 bnx2i_process_async_mesg(session, bnx2i_conn, 1725 qp->cq_cons_qe); 1726 tgt_async_msg = 1; 1727 break; 1728 case ISCSI_OP_REJECT: 1729 bnx2i_process_reject_mesg(session, bnx2i_conn, 1730 qp->cq_cons_qe); 1731 break; 1732 case ISCSI_OPCODE_CLEANUP_RESPONSE: 1733 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, 1734 qp->cq_cons_qe); 1735 break; 1736 default: 1737 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 1738 nopin->op_code); 1739 } 1740 1741 if (!tgt_async_msg) 1742 bnx2i_conn->ep->num_active_cmds--; 1743 1744 /* clear out in production version only, till beta keep opcode 1745 * field intact, will be helpful in debugging (context dump) 1746 * nopin->op_code = 0; 1747 */ 1748 qp->cqe_exp_seq_sn++; 1749 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) 1750 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1751 1752 if (qp->cq_cons_qe == qp->cq_last_qe) { 1753 qp->cq_cons_qe = qp->cq_first_qe; 1754 qp->cq_cons_idx = 0; 1755 } else { 1756 qp->cq_cons_qe++; 1757 qp->cq_cons_idx++; 1758 } 1759 } 1760 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); 1761 } 1762 1763 /** 1764 * bnx2i_fastpath_notification - process global event queue (KCQ) 1765 * @hba: adapter structure pointer 1766 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry 1767 * 1768 * Fast path event notification handler, KCQ entry carries context id 1769 * of the connection that has 1 or more pending CQ entries 1770 */ 1771 static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, 1772 struct iscsi_kcqe *new_cqe_kcqe) 1773 { 1774 struct bnx2i_conn *conn; 1775 u32 iscsi_cid; 1776 1777 iscsi_cid = new_cqe_kcqe->iscsi_conn_id; 1778 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1779 1780 if (!conn) { 1781 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); 1782 return; 1783 } 1784 if (!conn->ep) { 1785 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); 1786 return; 1787 } 1788 1789 bnx2i_process_new_cqes(conn); 1790 } 1791 1792 1793 /** 1794 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE 1795 * @hba: adapter structure pointer 1796 * @update_kcqe: kcqe pointer 1797 * 1798 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration 1799 */ 1800 static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, 1801 struct iscsi_kcqe *update_kcqe) 1802 { 1803 struct bnx2i_conn *conn; 1804 u32 iscsi_cid; 1805 1806 iscsi_cid = update_kcqe->iscsi_conn_id; 1807 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1808 1809 if (!conn) { 1810 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); 1811 return; 1812 } 1813 if (!conn->ep) { 1814 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); 1815 return; 1816 } 1817 1818 if (update_kcqe->completion_status) { 1819 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); 1820 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; 1821 } else 1822 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; 1823 1824 wake_up_interruptible(&conn->ep->ofld_wait); 1825 } 1826 1827 1828 /** 1829 * bnx2i_recovery_que_add_conn - add connection to recovery queue 1830 * @hba: adapter structure pointer 1831 * @bnx2i_conn: iscsi connection 1832 * 1833 * Add connection to recovery queue and schedule adapter eh worker 1834 */ 1835 static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, 1836 struct bnx2i_conn *bnx2i_conn) 1837 { 1838 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, 1839 ISCSI_ERR_CONN_FAILED); 1840 } 1841 1842 1843 /** 1844 * bnx2i_process_tcp_error - process error notification on a given connection 1845 * 1846 * @hba: adapter structure pointer 1847 * @tcp_err: tcp error kcqe pointer 1848 * 1849 * handles tcp level error notifications from FW. 1850 */ 1851 static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, 1852 struct iscsi_kcqe *tcp_err) 1853 { 1854 struct bnx2i_conn *bnx2i_conn; 1855 u32 iscsi_cid; 1856 1857 iscsi_cid = tcp_err->iscsi_conn_id; 1858 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1859 1860 if (!bnx2i_conn) { 1861 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1862 return; 1863 } 1864 1865 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", 1866 iscsi_cid, tcp_err->completion_status); 1867 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 1868 } 1869 1870 1871 /** 1872 * bnx2i_process_iscsi_error - process error notification on a given connection 1873 * @hba: adapter structure pointer 1874 * @iscsi_err: iscsi error kcqe pointer 1875 * 1876 * handles iscsi error notifications from the FW. Firmware based in initial 1877 * handshake classifies iscsi protocol / TCP rfc violation into either 1878 * warning or error indications. If indication is of "Error" type, driver 1879 * will initiate session recovery for that connection/session. For 1880 * "Warning" type indication, driver will put out a system log message 1881 * (there will be only one message for each type for the life of the 1882 * session, this is to avoid un-necessarily overloading the system) 1883 */ 1884 static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, 1885 struct iscsi_kcqe *iscsi_err) 1886 { 1887 struct bnx2i_conn *bnx2i_conn; 1888 u32 iscsi_cid; 1889 char warn_notice[] = "iscsi_warning"; 1890 char error_notice[] = "iscsi_error"; 1891 char additional_notice[64]; 1892 char *message; 1893 int need_recovery; 1894 u64 err_mask64; 1895 1896 iscsi_cid = iscsi_err->iscsi_conn_id; 1897 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1898 if (!bnx2i_conn) { 1899 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1900 return; 1901 } 1902 1903 err_mask64 = (0x1ULL << iscsi_err->completion_status); 1904 1905 if (err_mask64 & iscsi_error_mask) { 1906 need_recovery = 0; 1907 message = warn_notice; 1908 } else { 1909 need_recovery = 1; 1910 message = error_notice; 1911 } 1912 1913 switch (iscsi_err->completion_status) { 1914 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: 1915 strcpy(additional_notice, "hdr digest err"); 1916 break; 1917 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: 1918 strcpy(additional_notice, "data digest err"); 1919 break; 1920 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: 1921 strcpy(additional_notice, "wrong opcode rcvd"); 1922 break; 1923 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: 1924 strcpy(additional_notice, "AHS len > 0 rcvd"); 1925 break; 1926 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: 1927 strcpy(additional_notice, "invalid ITT rcvd"); 1928 break; 1929 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: 1930 strcpy(additional_notice, "wrong StatSN rcvd"); 1931 break; 1932 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: 1933 strcpy(additional_notice, "wrong DataSN rcvd"); 1934 break; 1935 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: 1936 strcpy(additional_notice, "pend R2T violation"); 1937 break; 1938 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: 1939 strcpy(additional_notice, "ERL0, UO"); 1940 break; 1941 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: 1942 strcpy(additional_notice, "ERL0, U1"); 1943 break; 1944 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: 1945 strcpy(additional_notice, "ERL0, U2"); 1946 break; 1947 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: 1948 strcpy(additional_notice, "ERL0, U3"); 1949 break; 1950 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: 1951 strcpy(additional_notice, "ERL0, U4"); 1952 break; 1953 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: 1954 strcpy(additional_notice, "ERL0, U5"); 1955 break; 1956 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: 1957 strcpy(additional_notice, "ERL0, U6"); 1958 break; 1959 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: 1960 strcpy(additional_notice, "invalid resi len"); 1961 break; 1962 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: 1963 strcpy(additional_notice, "MRDSL violation"); 1964 break; 1965 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: 1966 strcpy(additional_notice, "F-bit not set"); 1967 break; 1968 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: 1969 strcpy(additional_notice, "invalid TTT"); 1970 break; 1971 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: 1972 strcpy(additional_notice, "invalid DataSN"); 1973 break; 1974 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: 1975 strcpy(additional_notice, "burst len violation"); 1976 break; 1977 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: 1978 strcpy(additional_notice, "buf offset violation"); 1979 break; 1980 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: 1981 strcpy(additional_notice, "invalid LUN field"); 1982 break; 1983 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: 1984 strcpy(additional_notice, "invalid R2TSN field"); 1985 break; 1986 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ 1987 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 1988 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: 1989 strcpy(additional_notice, "invalid cmd len1"); 1990 break; 1991 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ 1992 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 1993 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: 1994 strcpy(additional_notice, "invalid cmd len2"); 1995 break; 1996 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: 1997 strcpy(additional_notice, 1998 "pend r2t exceeds MaxOutstandingR2T value"); 1999 break; 2000 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: 2001 strcpy(additional_notice, "TTT is rsvd"); 2002 break; 2003 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: 2004 strcpy(additional_notice, "MBL violation"); 2005 break; 2006 #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ 2007 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO 2008 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: 2009 strcpy(additional_notice, "data seg len != 0"); 2010 break; 2011 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: 2012 strcpy(additional_notice, "reject pdu len error"); 2013 break; 2014 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: 2015 strcpy(additional_notice, "async pdu len error"); 2016 break; 2017 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: 2018 strcpy(additional_notice, "nopin pdu len error"); 2019 break; 2020 #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ 2021 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP 2022 case BNX2_ERR_PEND_R2T_IN_CLEANUP: 2023 strcpy(additional_notice, "pend r2t in cleanup"); 2024 break; 2025 2026 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: 2027 strcpy(additional_notice, "IP fragments rcvd"); 2028 break; 2029 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: 2030 strcpy(additional_notice, "IP options error"); 2031 break; 2032 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: 2033 strcpy(additional_notice, "urgent flag error"); 2034 break; 2035 default: 2036 printk(KERN_ALERT "iscsi_err - unknown err %x\n", 2037 iscsi_err->completion_status); 2038 } 2039 2040 if (need_recovery) { 2041 iscsi_conn_printk(KERN_ALERT, 2042 bnx2i_conn->cls_conn->dd_data, 2043 "bnx2i: %s - %s\n", 2044 message, additional_notice); 2045 2046 iscsi_conn_printk(KERN_ALERT, 2047 bnx2i_conn->cls_conn->dd_data, 2048 "conn_err - hostno %d conn %p, " 2049 "iscsi_cid %x cid %x\n", 2050 bnx2i_conn->hba->shost->host_no, 2051 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, 2052 bnx2i_conn->ep->ep_cid); 2053 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2054 } else 2055 if (!test_and_set_bit(iscsi_err->completion_status, 2056 (void *) &bnx2i_conn->violation_notified)) 2057 iscsi_conn_printk(KERN_ALERT, 2058 bnx2i_conn->cls_conn->dd_data, 2059 "bnx2i: %s - %s\n", 2060 message, additional_notice); 2061 } 2062 2063 2064 /** 2065 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion 2066 * @hba: adapter structure pointer 2067 * @conn_destroy: conn destroy kcqe pointer 2068 * 2069 * handles connection destroy completion request. 2070 */ 2071 static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, 2072 struct iscsi_kcqe *conn_destroy) 2073 { 2074 struct bnx2i_endpoint *ep; 2075 2076 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); 2077 if (!ep) { 2078 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " 2079 "offload request, unexpected complection\n"); 2080 return; 2081 } 2082 2083 if (hba != ep->hba) { 2084 printk(KERN_ALERT "conn destroy- error hba mis-match\n"); 2085 return; 2086 } 2087 2088 if (conn_destroy->completion_status) { 2089 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); 2090 ep->state = EP_STATE_CLEANUP_FAILED; 2091 } else 2092 ep->state = EP_STATE_CLEANUP_CMPL; 2093 wake_up_interruptible(&ep->ofld_wait); 2094 } 2095 2096 2097 /** 2098 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion 2099 * @hba: adapter structure pointer 2100 * @ofld_kcqe: conn offload kcqe pointer 2101 * 2102 * handles initial connection offload completion, ep_connect() thread is 2103 * woken-up to continue with LLP connect process 2104 */ 2105 static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, 2106 struct iscsi_kcqe *ofld_kcqe) 2107 { 2108 u32 cid_addr; 2109 struct bnx2i_endpoint *ep; 2110 u32 cid_num; 2111 2112 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); 2113 if (!ep) { 2114 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); 2115 return; 2116 } 2117 2118 if (hba != ep->hba) { 2119 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); 2120 return; 2121 } 2122 2123 if (ofld_kcqe->completion_status) { 2124 if (ofld_kcqe->completion_status == 2125 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) 2126 printk(KERN_ALERT "bnx2i: unable to allocate" 2127 " iSCSI context resources\n"); 2128 ep->state = EP_STATE_OFLD_FAILED; 2129 } else { 2130 ep->state = EP_STATE_OFLD_COMPL; 2131 cid_addr = ofld_kcqe->iscsi_conn_context_id; 2132 cid_num = bnx2i_get_cid_num(ep); 2133 ep->ep_cid = cid_addr; 2134 ep->qp.ctx_base = NULL; 2135 } 2136 wake_up_interruptible(&ep->ofld_wait); 2137 } 2138 2139 /** 2140 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE 2141 * @hba: adapter structure pointer 2142 * @update_kcqe: kcqe pointer 2143 * 2144 * Generic KCQ event handler/dispatcher 2145 */ 2146 static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], 2147 u32 num_cqe) 2148 { 2149 struct bnx2i_hba *hba = context; 2150 int i = 0; 2151 struct iscsi_kcqe *ikcqe = NULL; 2152 2153 while (i < num_cqe) { 2154 ikcqe = (struct iscsi_kcqe *) kcqe[i++]; 2155 2156 if (ikcqe->op_code == 2157 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) 2158 bnx2i_fastpath_notification(hba, ikcqe); 2159 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) 2160 bnx2i_process_ofld_cmpl(hba, ikcqe); 2161 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) 2162 bnx2i_process_update_conn_cmpl(hba, ikcqe); 2163 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { 2164 if (ikcqe->completion_status != 2165 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) 2166 bnx2i_iscsi_license_error(hba, ikcqe->\ 2167 completion_status); 2168 else { 2169 set_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2170 bnx2i_get_link_state(hba); 2171 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " 2172 "ISCSI_INIT passed\n", 2173 (u8)hba->pcidev->bus->number, 2174 hba->pci_devno, 2175 (u8)hba->pci_func); 2176 2177 2178 } 2179 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) 2180 bnx2i_process_conn_destroy_cmpl(hba, ikcqe); 2181 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) 2182 bnx2i_process_iscsi_error(hba, ikcqe); 2183 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) 2184 bnx2i_process_tcp_error(hba, ikcqe); 2185 else 2186 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 2187 ikcqe->op_code); 2188 } 2189 } 2190 2191 2192 /** 2193 * bnx2i_indicate_netevent - Generic netdev event handler 2194 * @context: adapter structure pointer 2195 * @event: event type 2196 * 2197 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, 2198 * NETDEV_GOING_DOWN and NETDEV_CHANGE 2199 */ 2200 static void bnx2i_indicate_netevent(void *context, unsigned long event) 2201 { 2202 struct bnx2i_hba *hba = context; 2203 2204 switch (event) { 2205 case NETDEV_UP: 2206 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 2207 bnx2i_send_fw_iscsi_init_msg(hba); 2208 break; 2209 case NETDEV_DOWN: 2210 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2211 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2212 break; 2213 case NETDEV_GOING_DOWN: 2214 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2215 iscsi_host_for_each_session(hba->shost, 2216 bnx2i_drop_session); 2217 break; 2218 case NETDEV_CHANGE: 2219 bnx2i_get_link_state(hba); 2220 break; 2221 default: 2222 ; 2223 } 2224 } 2225 2226 2227 /** 2228 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion 2229 * @cm_sk: cnic sock structure pointer 2230 * 2231 * function callback exported via bnx2i - cnic driver interface to 2232 * indicate completion of option-2 TCP connect request. 2233 */ 2234 static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) 2235 { 2236 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2237 2238 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) 2239 ep->state = EP_STATE_CONNECT_FAILED; 2240 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) 2241 ep->state = EP_STATE_CONNECT_COMPL; 2242 else 2243 ep->state = EP_STATE_CONNECT_FAILED; 2244 2245 wake_up_interruptible(&ep->ofld_wait); 2246 } 2247 2248 2249 /** 2250 * bnx2i_cm_close_cmpl - process tcp conn close completion 2251 * @cm_sk: cnic sock structure pointer 2252 * 2253 * function callback exported via bnx2i - cnic driver interface to 2254 * indicate completion of option-2 graceful TCP connect shutdown 2255 */ 2256 static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) 2257 { 2258 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2259 2260 ep->state = EP_STATE_DISCONN_COMPL; 2261 wake_up_interruptible(&ep->ofld_wait); 2262 } 2263 2264 2265 /** 2266 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion 2267 * @cm_sk: cnic sock structure pointer 2268 * 2269 * function callback exported via bnx2i - cnic driver interface to 2270 * indicate completion of option-2 abortive TCP connect termination 2271 */ 2272 static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) 2273 { 2274 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2275 2276 ep->state = EP_STATE_DISCONN_COMPL; 2277 wake_up_interruptible(&ep->ofld_wait); 2278 } 2279 2280 2281 /** 2282 * bnx2i_cm_remote_close - process received TCP FIN 2283 * @hba: adapter structure pointer 2284 * @update_kcqe: kcqe pointer 2285 * 2286 * function callback exported via bnx2i - cnic driver interface to indicate 2287 * async TCP events such as FIN 2288 */ 2289 static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) 2290 { 2291 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2292 2293 ep->state = EP_STATE_TCP_FIN_RCVD; 2294 if (ep->conn) 2295 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2296 } 2297 2298 /** 2299 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup 2300 * @hba: adapter structure pointer 2301 * @update_kcqe: kcqe pointer 2302 * 2303 * function callback exported via bnx2i - cnic driver interface to 2304 * indicate async TCP events (RST) sent by the peer. 2305 */ 2306 static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) 2307 { 2308 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2309 2310 ep->state = EP_STATE_TCP_RST_RCVD; 2311 if (ep->conn) 2312 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2313 } 2314 2315 2316 static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type, 2317 char *buf, u16 buflen) 2318 { 2319 struct bnx2i_hba *hba; 2320 2321 hba = bnx2i_find_hba_for_cnic(dev); 2322 if (!hba) 2323 return; 2324 2325 if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, 2326 msg_type, buf, buflen)) 2327 printk(KERN_ALERT "bnx2i: private nl message send error\n"); 2328 2329 } 2330 2331 2332 /** 2333 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure 2334 * carrying callback function pointers 2335 * 2336 */ 2337 struct cnic_ulp_ops bnx2i_cnic_cb = { 2338 .cnic_init = bnx2i_ulp_init, 2339 .cnic_exit = bnx2i_ulp_exit, 2340 .cnic_start = bnx2i_start, 2341 .cnic_stop = bnx2i_stop, 2342 .indicate_kcqes = bnx2i_indicate_kcqe, 2343 .indicate_netevent = bnx2i_indicate_netevent, 2344 .cm_connect_complete = bnx2i_cm_connect_cmpl, 2345 .cm_close_complete = bnx2i_cm_close_cmpl, 2346 .cm_abort_complete = bnx2i_cm_abort_cmpl, 2347 .cm_remote_close = bnx2i_cm_remote_close, 2348 .cm_remote_abort = bnx2i_cm_remote_abort, 2349 .iscsi_nl_send_msg = bnx2i_send_nl_mesg, 2350 .owner = THIS_MODULE 2351 }; 2352 2353 2354 /** 2355 * bnx2i_map_ep_dbell_regs - map connection doorbell registers 2356 * @ep: bnx2i endpoint 2357 * 2358 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these 2359 * register in BAR #0. Whereas in 57710 these register are accessed by 2360 * mapping BAR #1 2361 */ 2362 int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) 2363 { 2364 u32 cid_num; 2365 u32 reg_off; 2366 u32 first_l4l5; 2367 u32 ctx_sz; 2368 u32 config2; 2369 resource_size_t reg_base; 2370 2371 cid_num = bnx2i_get_cid_num(ep); 2372 2373 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 2374 reg_base = pci_resource_start(ep->hba->pcidev, 2375 BNX2X_DOORBELL_PCI_BAR); 2376 reg_off = PAGE_SIZE * (cid_num & 0x1FFFF) + DPM_TRIGER_TYPE; 2377 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); 2378 goto arm_cq; 2379 } 2380 2381 reg_base = ep->hba->netdev->base_addr; 2382 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && 2383 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { 2384 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); 2385 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; 2386 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; 2387 if (ctx_sz) 2388 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE 2389 + BNX2I_570X_PAGE_SIZE_DEFAULT * 2390 (((cid_num - first_l4l5) / ctx_sz) + 256); 2391 else 2392 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2393 } else 2394 /* 5709 device in normal node and 5706/5708 devices */ 2395 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2396 2397 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 2398 MB_KERNEL_CTX_SIZE); 2399 if (!ep->qp.ctx_base) 2400 return -ENOMEM; 2401 2402 arm_cq: 2403 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); 2404 return 0; 2405 } 2406