1 /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. 2 * 3 * Copyright (c) 2006 - 2010 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 * Maintained by: Eddie Wai (eddie.wai@broadcom.com) 13 */ 14 15 #include <linux/gfp.h> 16 #include <scsi/scsi_tcq.h> 17 #include <scsi/libiscsi.h> 18 #include "bnx2i.h" 19 20 /** 21 * bnx2i_get_cid_num - get cid from ep 22 * @ep: endpoint pointer 23 * 24 * Only applicable to 57710 family of devices 25 */ 26 static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) 27 { 28 u32 cid; 29 30 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 31 cid = ep->ep_cid; 32 else 33 cid = GET_CID_NUM(ep->ep_cid); 34 return cid; 35 } 36 37 38 /** 39 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type 40 * @hba: Adapter for which adjustments is to be made 41 * 42 * Only applicable to 57710 family of devices 43 */ 44 static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) 45 { 46 u32 num_elements_per_pg; 47 48 if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || 49 test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || 50 test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { 51 if (!is_power_of_2(hba->max_sqes)) 52 hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); 53 54 if (!is_power_of_2(hba->max_rqes)) 55 hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); 56 } 57 58 /* Adjust each queue size if the user selection does not 59 * yield integral num of page buffers 60 */ 61 /* adjust SQ */ 62 num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 63 if (hba->max_sqes < num_elements_per_pg) 64 hba->max_sqes = num_elements_per_pg; 65 else if (hba->max_sqes % num_elements_per_pg) 66 hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & 67 ~(num_elements_per_pg - 1); 68 69 /* adjust CQ */ 70 num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; 71 if (hba->max_cqes < num_elements_per_pg) 72 hba->max_cqes = num_elements_per_pg; 73 else if (hba->max_cqes % num_elements_per_pg) 74 hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & 75 ~(num_elements_per_pg - 1); 76 77 /* adjust RQ */ 78 num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; 79 if (hba->max_rqes < num_elements_per_pg) 80 hba->max_rqes = num_elements_per_pg; 81 else if (hba->max_rqes % num_elements_per_pg) 82 hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & 83 ~(num_elements_per_pg - 1); 84 } 85 86 87 /** 88 * bnx2i_get_link_state - get network interface link state 89 * @hba: adapter instance pointer 90 * 91 * updates adapter structure flag based on netdev state 92 */ 93 static void bnx2i_get_link_state(struct bnx2i_hba *hba) 94 { 95 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) 96 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 97 else 98 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 99 } 100 101 102 /** 103 * bnx2i_iscsi_license_error - displays iscsi license related error message 104 * @hba: adapter instance pointer 105 * @error_code: error classification 106 * 107 * Puts out an error log when driver is unable to offload iscsi connection 108 * due to license restrictions 109 */ 110 static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) 111 { 112 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) 113 /* iSCSI offload not supported on this device */ 114 printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", 115 hba->netdev->name); 116 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) 117 /* iSCSI offload not supported on this LOM device */ 118 printk(KERN_ERR "bnx2i: LOM is not enable to " 119 "offload iSCSI connections, dev=%s\n", 120 hba->netdev->name); 121 set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); 122 } 123 124 125 /** 126 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification 127 * @ep: endpoint (transport indentifier) structure 128 * @action: action, ARM or DISARM. For now only ARM_CQE is used 129 * 130 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt 131 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is 132 * outstanding and on chip timer expires 133 */ 134 void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) 135 { 136 struct bnx2i_5771x_cq_db *cq_db; 137 u16 cq_index; 138 u16 next_index; 139 u32 num_active_cmds; 140 141 142 /* Coalesce CQ entries only on 10G devices */ 143 if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 144 return; 145 146 /* Do not update CQ DB multiple times before firmware writes 147 * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious 148 * interrupts and other unwanted results 149 */ 150 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 151 if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) 152 return; 153 154 if (action == CNIC_ARM_CQE) { 155 num_active_cmds = ep->num_active_cmds; 156 if (num_active_cmds <= event_coal_min) 157 next_index = 1; 158 else 159 next_index = event_coal_min + 160 (num_active_cmds - event_coal_min) / event_coal_div; 161 if (!next_index) 162 next_index = 1; 163 cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; 164 if (cq_index > ep->qp.cqe_size * 2) 165 cq_index -= ep->qp.cqe_size * 2; 166 if (!cq_index) 167 cq_index = 1; 168 169 cq_db->sqn[0] = cq_index; 170 } 171 } 172 173 174 /** 175 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer 176 * @conn: iscsi connection on which RQ event occured 177 * @ptr: driver buffer to which RQ buffer contents is to 178 * be copied 179 * @len: length of valid data inside RQ buf 180 * 181 * Copies RQ buffer contents from shared (DMA'able) memory region to 182 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and 183 * scsi sense info 184 */ 185 void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) 186 { 187 if (!bnx2i_conn->ep->qp.rqe_left) 188 return; 189 190 bnx2i_conn->ep->qp.rqe_left--; 191 memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); 192 if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { 193 bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; 194 bnx2i_conn->ep->qp.rq_cons_idx = 0; 195 } else { 196 bnx2i_conn->ep->qp.rq_cons_qe++; 197 bnx2i_conn->ep->qp.rq_cons_idx++; 198 } 199 } 200 201 202 static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) 203 { 204 struct bnx2i_5771x_dbell dbell; 205 u32 msg; 206 207 memset(&dbell, 0, sizeof(dbell)); 208 dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << 209 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); 210 msg = *((u32 *)&dbell); 211 /* TODO : get doorbell register mapping */ 212 writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); 213 } 214 215 216 /** 217 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell 218 * @conn: iscsi connection on which event to post 219 * @count: number of RQ buffer being posted to chip 220 * 221 * No need to ring hardware doorbell for 57710 family of devices 222 */ 223 void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) 224 { 225 struct bnx2i_5771x_sq_rq_db *rq_db; 226 u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); 227 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 228 229 ep->qp.rqe_left += count; 230 ep->qp.rq_prod_idx &= 0x7FFF; 231 ep->qp.rq_prod_idx += count; 232 233 if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { 234 ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; 235 if (!hi_bit) 236 ep->qp.rq_prod_idx |= 0x8000; 237 } else 238 ep->qp.rq_prod_idx |= hi_bit; 239 240 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 241 rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; 242 rq_db->prod_idx = ep->qp.rq_prod_idx; 243 /* no need to ring hardware doorbell for 57710 */ 244 } else { 245 writew(ep->qp.rq_prod_idx, 246 ep->qp.ctx_base + CNIC_RECV_DOORBELL); 247 } 248 mmiowb(); 249 } 250 251 252 /** 253 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine 254 * @conn: iscsi connection to which new SQ entries belong 255 * @count: number of SQ WQEs to post 256 * 257 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family 258 * of devices. For 5706/5708/5709 new SQ WQE count is written into the 259 * doorbell register 260 */ 261 static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) 262 { 263 struct bnx2i_5771x_sq_rq_db *sq_db; 264 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 265 266 ep->num_active_cmds++; 267 wmb(); /* flush SQ WQE memory before the doorbell is rung */ 268 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 269 sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; 270 sq_db->prod_idx = ep->qp.sq_prod_idx; 271 bnx2i_ring_577xx_doorbell(bnx2i_conn); 272 } else 273 writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); 274 275 mmiowb(); /* flush posted PCI writes */ 276 } 277 278 279 /** 280 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters 281 * @conn: iscsi connection to which new SQ entries belong 282 * @count: number of SQ WQEs to post 283 * 284 * this routine will update SQ driver parameters and ring the doorbell 285 */ 286 static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, 287 int count) 288 { 289 int tmp_cnt; 290 291 if (count == 1) { 292 if (bnx2i_conn->ep->qp.sq_prod_qe == 293 bnx2i_conn->ep->qp.sq_last_qe) 294 bnx2i_conn->ep->qp.sq_prod_qe = 295 bnx2i_conn->ep->qp.sq_first_qe; 296 else 297 bnx2i_conn->ep->qp.sq_prod_qe++; 298 } else { 299 if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= 300 bnx2i_conn->ep->qp.sq_last_qe) 301 bnx2i_conn->ep->qp.sq_prod_qe += count; 302 else { 303 tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - 304 bnx2i_conn->ep->qp.sq_prod_qe; 305 bnx2i_conn->ep->qp.sq_prod_qe = 306 &bnx2i_conn->ep->qp.sq_first_qe[count - 307 (tmp_cnt + 1)]; 308 } 309 } 310 bnx2i_conn->ep->qp.sq_prod_idx += count; 311 /* Ring the doorbell */ 312 bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); 313 } 314 315 316 /** 317 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware 318 * @conn: iscsi connection 319 * @cmd: driver command structure which is requesting 320 * a WQE to sent to chip for further processing 321 * 322 * prepare and post an iSCSI Login request WQE to CNIC firmware 323 */ 324 int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, 325 struct iscsi_task *task) 326 { 327 struct bnx2i_cmd *bnx2i_cmd; 328 struct bnx2i_login_request *login_wqe; 329 struct iscsi_login *login_hdr; 330 u32 dword; 331 332 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 333 login_hdr = (struct iscsi_login *)task->hdr; 334 login_wqe = (struct bnx2i_login_request *) 335 bnx2i_conn->ep->qp.sq_prod_qe; 336 337 login_wqe->op_code = login_hdr->opcode; 338 login_wqe->op_attr = login_hdr->flags; 339 login_wqe->version_max = login_hdr->max_version; 340 login_wqe->version_min = login_hdr->min_version; 341 login_wqe->data_length = ntoh24(login_hdr->dlength); 342 login_wqe->isid_lo = *((u32 *) login_hdr->isid); 343 login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); 344 login_wqe->tsih = login_hdr->tsih; 345 login_wqe->itt = task->itt | 346 (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); 347 login_wqe->cid = login_hdr->cid; 348 349 login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); 350 login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 351 login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN; 352 353 login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; 354 login_wqe->resp_bd_list_addr_hi = 355 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); 356 357 dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | 358 (bnx2i_conn->gen_pdu.resp_buf_size << 359 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); 360 login_wqe->resp_buffer = dword; 361 login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; 362 login_wqe->bd_list_addr_hi = 363 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); 364 login_wqe->num_bds = 1; 365 login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 366 367 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 368 return 0; 369 } 370 371 /** 372 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware 373 * @conn: iscsi connection 374 * @mtask: driver command structure which is requesting 375 * a WQE to sent to chip for further processing 376 * 377 * prepare and post an iSCSI Login request WQE to CNIC firmware 378 */ 379 int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, 380 struct iscsi_task *mtask) 381 { 382 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 383 struct iscsi_tm *tmfabort_hdr; 384 struct scsi_cmnd *ref_sc; 385 struct iscsi_task *ctask; 386 struct bnx2i_cmd *bnx2i_cmd; 387 struct bnx2i_tmf_request *tmfabort_wqe; 388 u32 dword; 389 u32 scsi_lun[2]; 390 391 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; 392 tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; 393 tmfabort_wqe = (struct bnx2i_tmf_request *) 394 bnx2i_conn->ep->qp.sq_prod_qe; 395 396 tmfabort_wqe->op_code = tmfabort_hdr->opcode; 397 tmfabort_wqe->op_attr = tmfabort_hdr->flags; 398 399 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); 400 tmfabort_wqe->reserved2 = 0; 401 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); 402 403 switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { 404 case ISCSI_TM_FUNC_ABORT_TASK: 405 case ISCSI_TM_FUNC_TASK_REASSIGN: 406 ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); 407 if (!ctask || !ctask->sc) 408 /* 409 * the iscsi layer must have completed the cmd while 410 * was starting up. 411 * 412 * Note: In the case of a SCSI cmd timeout, the task's 413 * sc is still active; hence ctask->sc != 0 414 * In this case, the task must be aborted 415 */ 416 return 0; 417 418 ref_sc = ctask->sc; 419 if (ref_sc->sc_data_direction == DMA_TO_DEVICE) 420 dword = (ISCSI_TASK_TYPE_WRITE << 421 ISCSI_CMD_REQUEST_TYPE_SHIFT); 422 else 423 dword = (ISCSI_TASK_TYPE_READ << 424 ISCSI_CMD_REQUEST_TYPE_SHIFT); 425 tmfabort_wqe->ref_itt = (dword | 426 (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); 427 break; 428 default: 429 tmfabort_wqe->ref_itt = RESERVED_ITT; 430 } 431 memcpy(scsi_lun, tmfabort_hdr->lun, sizeof(struct scsi_lun)); 432 tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); 433 tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); 434 435 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); 436 437 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 438 tmfabort_wqe->bd_list_addr_hi = (u32) 439 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 440 tmfabort_wqe->num_bds = 1; 441 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 442 443 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 444 return 0; 445 } 446 447 /** 448 * bnx2i_send_iscsi_text - post iSCSI text WQE to hardware 449 * @conn: iscsi connection 450 * @mtask: driver command structure which is requesting 451 * a WQE to sent to chip for further processing 452 * 453 * prepare and post an iSCSI Text request WQE to CNIC firmware 454 */ 455 int bnx2i_send_iscsi_text(struct bnx2i_conn *bnx2i_conn, 456 struct iscsi_task *mtask) 457 { 458 struct bnx2i_cmd *bnx2i_cmd; 459 struct bnx2i_text_request *text_wqe; 460 struct iscsi_text *text_hdr; 461 u32 dword; 462 463 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; 464 text_hdr = (struct iscsi_text *)mtask->hdr; 465 text_wqe = (struct bnx2i_text_request *) bnx2i_conn->ep->qp.sq_prod_qe; 466 467 memset(text_wqe, 0, sizeof(struct bnx2i_text_request)); 468 469 text_wqe->op_code = text_hdr->opcode; 470 text_wqe->op_attr = text_hdr->flags; 471 text_wqe->data_length = ntoh24(text_hdr->dlength); 472 text_wqe->itt = mtask->itt | 473 (ISCSI_TASK_TYPE_MPATH << ISCSI_TEXT_REQUEST_TYPE_SHIFT); 474 text_wqe->ttt = be32_to_cpu(text_hdr->ttt); 475 476 text_wqe->cmd_sn = be32_to_cpu(text_hdr->cmdsn); 477 478 text_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; 479 text_wqe->resp_bd_list_addr_hi = 480 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); 481 482 dword = ((1 << ISCSI_TEXT_REQUEST_NUM_RESP_BDS_SHIFT) | 483 (bnx2i_conn->gen_pdu.resp_buf_size << 484 ISCSI_TEXT_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); 485 text_wqe->resp_buffer = dword; 486 text_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; 487 text_wqe->bd_list_addr_hi = 488 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); 489 text_wqe->num_bds = 1; 490 text_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 491 492 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 493 return 0; 494 } 495 496 497 /** 498 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware 499 * @conn: iscsi connection 500 * @cmd: driver command structure which is requesting 501 * a WQE to sent to chip for further processing 502 * 503 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware 504 */ 505 int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, 506 struct bnx2i_cmd *cmd) 507 { 508 struct bnx2i_cmd_request *scsi_cmd_wqe; 509 510 scsi_cmd_wqe = (struct bnx2i_cmd_request *) 511 bnx2i_conn->ep->qp.sq_prod_qe; 512 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); 513 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 514 515 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 516 return 0; 517 } 518 519 /** 520 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware 521 * @conn: iscsi connection 522 * @cmd: driver command structure which is requesting 523 * a WQE to sent to chip for further processing 524 * @datap: payload buffer pointer 525 * @data_len: payload data length 526 * @unsol: indicated whether nopout pdu is unsolicited pdu or 527 * in response to target's NOPIN w/ TTT != FFFFFFFF 528 * 529 * prepare and post a nopout request WQE to CNIC firmware 530 */ 531 int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, 532 struct iscsi_task *task, 533 char *datap, int data_len, int unsol) 534 { 535 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 536 struct bnx2i_cmd *bnx2i_cmd; 537 struct bnx2i_nop_out_request *nopout_wqe; 538 struct iscsi_nopout *nopout_hdr; 539 540 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 541 nopout_hdr = (struct iscsi_nopout *)task->hdr; 542 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; 543 544 memset(nopout_wqe, 0x00, sizeof(struct bnx2i_nop_out_request)); 545 546 nopout_wqe->op_code = nopout_hdr->opcode; 547 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; 548 memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); 549 550 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 551 u32 tmp = nopout_wqe->lun[0]; 552 /* 57710 requires LUN field to be swapped */ 553 nopout_wqe->lun[0] = nopout_wqe->lun[1]; 554 nopout_wqe->lun[1] = tmp; 555 } 556 557 nopout_wqe->itt = ((u16)task->itt | 558 (ISCSI_TASK_TYPE_MPATH << 559 ISCSI_TMF_REQUEST_TYPE_SHIFT)); 560 nopout_wqe->ttt = nopout_hdr->ttt; 561 nopout_wqe->flags = 0; 562 if (!unsol) 563 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 564 else if (nopout_hdr->itt == RESERVED_ITT) 565 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 566 567 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 568 nopout_wqe->data_length = data_len; 569 if (data_len) { 570 /* handle payload data, not required in first release */ 571 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); 572 } else { 573 nopout_wqe->bd_list_addr_lo = (u32) 574 bnx2i_conn->hba->mp_bd_dma; 575 nopout_wqe->bd_list_addr_hi = 576 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 577 nopout_wqe->num_bds = 1; 578 } 579 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 580 581 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 582 return 0; 583 } 584 585 586 /** 587 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware 588 * @conn: iscsi connection 589 * @cmd: driver command structure which is requesting 590 * a WQE to sent to chip for further processing 591 * 592 * prepare and post logout request WQE to CNIC firmware 593 */ 594 int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, 595 struct iscsi_task *task) 596 { 597 struct bnx2i_cmd *bnx2i_cmd; 598 struct bnx2i_logout_request *logout_wqe; 599 struct iscsi_logout *logout_hdr; 600 601 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 602 logout_hdr = (struct iscsi_logout *)task->hdr; 603 604 logout_wqe = (struct bnx2i_logout_request *) 605 bnx2i_conn->ep->qp.sq_prod_qe; 606 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); 607 608 logout_wqe->op_code = logout_hdr->opcode; 609 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 610 logout_wqe->op_attr = 611 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; 612 logout_wqe->itt = ((u16)task->itt | 613 (ISCSI_TASK_TYPE_MPATH << 614 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); 615 logout_wqe->data_length = 0; 616 logout_wqe->cid = 0; 617 618 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 619 logout_wqe->bd_list_addr_hi = (u32) 620 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 621 logout_wqe->num_bds = 1; 622 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 623 624 bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT; 625 626 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 627 return 0; 628 } 629 630 631 /** 632 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware 633 * @conn: iscsi connection which requires iscsi parameter update 634 * 635 * sends down iSCSI Conn Update request to move iSCSI conn to FFP 636 */ 637 void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) 638 { 639 struct bnx2i_conn *bnx2i_conn = conn->dd_data; 640 struct bnx2i_hba *hba = bnx2i_conn->hba; 641 struct kwqe *kwqe_arr[2]; 642 struct iscsi_kwqe_conn_update *update_wqe; 643 struct iscsi_kwqe_conn_update conn_update_kwqe; 644 645 update_wqe = &conn_update_kwqe; 646 647 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; 648 update_wqe->hdr.flags = 649 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 650 651 /* 5771x requires conn context id to be passed as is */ 652 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) 653 update_wqe->context_id = bnx2i_conn->ep->ep_cid; 654 else 655 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); 656 update_wqe->conn_flags = 0; 657 if (conn->hdrdgst_en) 658 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; 659 if (conn->datadgst_en) 660 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; 661 if (conn->session->initial_r2t_en) 662 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; 663 if (conn->session->imm_data_en) 664 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; 665 666 update_wqe->max_send_pdu_length = conn->max_xmit_dlength; 667 update_wqe->max_recv_pdu_length = conn->max_recv_dlength; 668 update_wqe->first_burst_length = conn->session->first_burst; 669 update_wqe->max_burst_length = conn->session->max_burst; 670 update_wqe->exp_stat_sn = conn->exp_statsn; 671 update_wqe->max_outstanding_r2ts = conn->session->max_r2t; 672 update_wqe->session_error_recovery_level = conn->session->erl; 673 iscsi_conn_printk(KERN_ALERT, conn, 674 "bnx2i: conn update - MBL 0x%x FBL 0x%x" 675 "MRDSL_I 0x%x MRDSL_T 0x%x \n", 676 update_wqe->max_burst_length, 677 update_wqe->first_burst_length, 678 update_wqe->max_recv_pdu_length, 679 update_wqe->max_send_pdu_length); 680 681 kwqe_arr[0] = (struct kwqe *) update_wqe; 682 if (hba->cnic && hba->cnic->submit_kwqes) 683 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 684 } 685 686 687 /** 688 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware 689 * @data: endpoint (transport handle) structure pointer 690 * 691 * routine to handle connection offload/destroy request timeout 692 */ 693 void bnx2i_ep_ofld_timer(unsigned long data) 694 { 695 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; 696 697 if (ep->state == EP_STATE_OFLD_START) { 698 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); 699 ep->state = EP_STATE_OFLD_FAILED; 700 } else if (ep->state == EP_STATE_DISCONN_START) { 701 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); 702 ep->state = EP_STATE_DISCONN_TIMEDOUT; 703 } else if (ep->state == EP_STATE_CLEANUP_START) { 704 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); 705 ep->state = EP_STATE_CLEANUP_FAILED; 706 } 707 708 wake_up_interruptible(&ep->ofld_wait); 709 } 710 711 712 static int bnx2i_power_of2(u32 val) 713 { 714 u32 power = 0; 715 if (val & (val - 1)) 716 return power; 717 val--; 718 while (val) { 719 val = val >> 1; 720 power++; 721 } 722 return power; 723 } 724 725 726 /** 727 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request 728 * @hba: adapter structure pointer 729 * @cmd: driver command structure which is requesting 730 * a WQE to sent to chip for further processing 731 * 732 * prepares and posts CONN_OFLD_REQ1/2 KWQE 733 */ 734 void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) 735 { 736 struct bnx2i_cleanup_request *cmd_cleanup; 737 738 cmd_cleanup = 739 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; 740 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); 741 742 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; 743 cmd_cleanup->itt = cmd->req.itt; 744 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ 745 746 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); 747 } 748 749 750 /** 751 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process 752 * @hba: adapter structure pointer 753 * @ep: endpoint (transport indentifier) structure 754 * 755 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate 756 * iscsi connection context clean-up process 757 */ 758 int bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 759 { 760 struct kwqe *kwqe_arr[2]; 761 struct iscsi_kwqe_conn_destroy conn_cleanup; 762 int rc = -EINVAL; 763 764 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); 765 766 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; 767 conn_cleanup.hdr.flags = 768 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 769 /* 5771x requires conn context id to be passed as is */ 770 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 771 conn_cleanup.context_id = ep->ep_cid; 772 else 773 conn_cleanup.context_id = (ep->ep_cid >> 7); 774 775 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; 776 777 kwqe_arr[0] = (struct kwqe *) &conn_cleanup; 778 if (hba->cnic && hba->cnic->submit_kwqes) 779 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 780 781 return rc; 782 } 783 784 785 /** 786 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process 787 * @hba: adapter structure pointer 788 * @ep: endpoint (transport indentifier) structure 789 * 790 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 791 */ 792 static int bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, 793 struct bnx2i_endpoint *ep) 794 { 795 struct kwqe *kwqe_arr[2]; 796 struct iscsi_kwqe_conn_offload1 ofld_req1; 797 struct iscsi_kwqe_conn_offload2 ofld_req2; 798 dma_addr_t dma_addr; 799 int num_kwqes = 2; 800 u32 *ptbl; 801 int rc = -EINVAL; 802 803 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 804 ofld_req1.hdr.flags = 805 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 806 807 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 808 809 dma_addr = ep->qp.sq_pgtbl_phys; 810 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 811 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 812 813 dma_addr = ep->qp.cq_pgtbl_phys; 814 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 815 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 816 817 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 818 ofld_req2.hdr.flags = 819 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 820 821 dma_addr = ep->qp.rq_pgtbl_phys; 822 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 823 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 824 825 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 826 827 ofld_req2.sq_first_pte.hi = *ptbl++; 828 ofld_req2.sq_first_pte.lo = *ptbl; 829 830 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 831 ofld_req2.cq_first_pte.hi = *ptbl++; 832 ofld_req2.cq_first_pte.lo = *ptbl; 833 834 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 835 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 836 ofld_req2.num_additional_wqes = 0; 837 838 if (hba->cnic && hba->cnic->submit_kwqes) 839 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 840 841 return rc; 842 } 843 844 845 /** 846 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation 847 * @hba: adapter structure pointer 848 * @ep: endpoint (transport indentifier) structure 849 * 850 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 851 */ 852 static int bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, 853 struct bnx2i_endpoint *ep) 854 { 855 struct kwqe *kwqe_arr[5]; 856 struct iscsi_kwqe_conn_offload1 ofld_req1; 857 struct iscsi_kwqe_conn_offload2 ofld_req2; 858 struct iscsi_kwqe_conn_offload3 ofld_req3[1]; 859 dma_addr_t dma_addr; 860 int num_kwqes = 2; 861 u32 *ptbl; 862 int rc = -EINVAL; 863 864 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 865 ofld_req1.hdr.flags = 866 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 867 868 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 869 870 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; 871 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 872 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 873 874 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; 875 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 876 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 877 878 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 879 ofld_req2.hdr.flags = 880 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 881 882 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; 883 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 884 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 885 886 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 887 ofld_req2.sq_first_pte.hi = *ptbl++; 888 ofld_req2.sq_first_pte.lo = *ptbl; 889 890 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 891 ofld_req2.cq_first_pte.hi = *ptbl++; 892 ofld_req2.cq_first_pte.lo = *ptbl; 893 894 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 895 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 896 897 ofld_req2.num_additional_wqes = 1; 898 memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); 899 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 900 ofld_req3[0].qp_first_pte[0].hi = *ptbl++; 901 ofld_req3[0].qp_first_pte[0].lo = *ptbl; 902 903 kwqe_arr[2] = (struct kwqe *) ofld_req3; 904 /* need if we decide to go with multiple KCQE's per conn */ 905 num_kwqes += 1; 906 907 if (hba->cnic && hba->cnic->submit_kwqes) 908 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 909 910 return rc; 911 } 912 913 /** 914 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process 915 * 916 * @hba: adapter structure pointer 917 * @ep: endpoint (transport indentifier) structure 918 * 919 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE 920 */ 921 int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 922 { 923 int rc; 924 925 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) 926 rc = bnx2i_5771x_send_conn_ofld_req(hba, ep); 927 else 928 rc = bnx2i_570x_send_conn_ofld_req(hba, ep); 929 930 return rc; 931 } 932 933 934 /** 935 * setup_qp_page_tables - iscsi QP page table setup function 936 * @ep: endpoint (transport indentifier) structure 937 * 938 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires 939 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires 940 * PT in little endian format 941 */ 942 static void setup_qp_page_tables(struct bnx2i_endpoint *ep) 943 { 944 int num_pages; 945 u32 *ptbl; 946 dma_addr_t page; 947 int cnic_dev_10g; 948 949 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 950 cnic_dev_10g = 1; 951 else 952 cnic_dev_10g = 0; 953 954 /* SQ page table */ 955 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); 956 num_pages = ep->qp.sq_mem_size / PAGE_SIZE; 957 page = ep->qp.sq_phys; 958 959 if (cnic_dev_10g) 960 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 961 else 962 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 963 while (num_pages--) { 964 if (cnic_dev_10g) { 965 /* PTE is written in little endian format for 57710 */ 966 *ptbl = (u32) page; 967 ptbl++; 968 *ptbl = (u32) ((u64) page >> 32); 969 ptbl++; 970 page += PAGE_SIZE; 971 } else { 972 /* PTE is written in big endian format for 973 * 5706/5708/5709 devices */ 974 *ptbl = (u32) ((u64) page >> 32); 975 ptbl++; 976 *ptbl = (u32) page; 977 ptbl++; 978 page += PAGE_SIZE; 979 } 980 } 981 982 /* RQ page table */ 983 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); 984 num_pages = ep->qp.rq_mem_size / PAGE_SIZE; 985 page = ep->qp.rq_phys; 986 987 if (cnic_dev_10g) 988 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 989 else 990 ptbl = (u32 *) ep->qp.rq_pgtbl_virt; 991 while (num_pages--) { 992 if (cnic_dev_10g) { 993 /* PTE is written in little endian format for 57710 */ 994 *ptbl = (u32) page; 995 ptbl++; 996 *ptbl = (u32) ((u64) page >> 32); 997 ptbl++; 998 page += PAGE_SIZE; 999 } else { 1000 /* PTE is written in big endian format for 1001 * 5706/5708/5709 devices */ 1002 *ptbl = (u32) ((u64) page >> 32); 1003 ptbl++; 1004 *ptbl = (u32) page; 1005 ptbl++; 1006 page += PAGE_SIZE; 1007 } 1008 } 1009 1010 /* CQ page table */ 1011 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); 1012 num_pages = ep->qp.cq_mem_size / PAGE_SIZE; 1013 page = ep->qp.cq_phys; 1014 1015 if (cnic_dev_10g) 1016 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 1017 else 1018 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 1019 while (num_pages--) { 1020 if (cnic_dev_10g) { 1021 /* PTE is written in little endian format for 57710 */ 1022 *ptbl = (u32) page; 1023 ptbl++; 1024 *ptbl = (u32) ((u64) page >> 32); 1025 ptbl++; 1026 page += PAGE_SIZE; 1027 } else { 1028 /* PTE is written in big endian format for 1029 * 5706/5708/5709 devices */ 1030 *ptbl = (u32) ((u64) page >> 32); 1031 ptbl++; 1032 *ptbl = (u32) page; 1033 ptbl++; 1034 page += PAGE_SIZE; 1035 } 1036 } 1037 } 1038 1039 1040 /** 1041 * bnx2i_alloc_qp_resc - allocates required resources for QP. 1042 * @hba: adapter structure pointer 1043 * @ep: endpoint (transport indentifier) structure 1044 * 1045 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able 1046 * memory for SQ/RQ/CQ and page tables. EP structure elements such 1047 * as producer/consumer indexes/pointers, queue sizes and page table 1048 * contents are setup 1049 */ 1050 int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1051 { 1052 struct bnx2i_5771x_cq_db *cq_db; 1053 1054 ep->hba = hba; 1055 ep->conn = NULL; 1056 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; 1057 1058 /* Allocate page table memory for SQ which is page aligned */ 1059 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; 1060 ep->qp.sq_mem_size = 1061 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1062 ep->qp.sq_pgtbl_size = 1063 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); 1064 ep->qp.sq_pgtbl_size = 1065 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1066 1067 ep->qp.sq_pgtbl_virt = 1068 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1069 &ep->qp.sq_pgtbl_phys, GFP_KERNEL); 1070 if (!ep->qp.sq_pgtbl_virt) { 1071 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", 1072 ep->qp.sq_pgtbl_size); 1073 goto mem_alloc_err; 1074 } 1075 1076 /* Allocate memory area for actual SQ element */ 1077 ep->qp.sq_virt = 1078 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1079 &ep->qp.sq_phys, GFP_KERNEL); 1080 if (!ep->qp.sq_virt) { 1081 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", 1082 ep->qp.sq_mem_size); 1083 goto mem_alloc_err; 1084 } 1085 1086 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); 1087 ep->qp.sq_first_qe = ep->qp.sq_virt; 1088 ep->qp.sq_prod_qe = ep->qp.sq_first_qe; 1089 ep->qp.sq_cons_qe = ep->qp.sq_first_qe; 1090 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; 1091 ep->qp.sq_prod_idx = 0; 1092 ep->qp.sq_cons_idx = 0; 1093 ep->qp.sqe_left = hba->max_sqes; 1094 1095 /* Allocate page table memory for CQ which is page aligned */ 1096 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; 1097 ep->qp.cq_mem_size = 1098 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1099 ep->qp.cq_pgtbl_size = 1100 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); 1101 ep->qp.cq_pgtbl_size = 1102 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1103 1104 ep->qp.cq_pgtbl_virt = 1105 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1106 &ep->qp.cq_pgtbl_phys, GFP_KERNEL); 1107 if (!ep->qp.cq_pgtbl_virt) { 1108 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", 1109 ep->qp.cq_pgtbl_size); 1110 goto mem_alloc_err; 1111 } 1112 1113 /* Allocate memory area for actual CQ element */ 1114 ep->qp.cq_virt = 1115 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1116 &ep->qp.cq_phys, GFP_KERNEL); 1117 if (!ep->qp.cq_virt) { 1118 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", 1119 ep->qp.cq_mem_size); 1120 goto mem_alloc_err; 1121 } 1122 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); 1123 1124 ep->qp.cq_first_qe = ep->qp.cq_virt; 1125 ep->qp.cq_prod_qe = ep->qp.cq_first_qe; 1126 ep->qp.cq_cons_qe = ep->qp.cq_first_qe; 1127 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; 1128 ep->qp.cq_prod_idx = 0; 1129 ep->qp.cq_cons_idx = 0; 1130 ep->qp.cqe_left = hba->max_cqes; 1131 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1132 ep->qp.cqe_size = hba->max_cqes; 1133 1134 /* Invalidate all EQ CQE index, req only for 57710 */ 1135 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 1136 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); 1137 1138 /* Allocate page table memory for RQ which is page aligned */ 1139 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; 1140 ep->qp.rq_mem_size = 1141 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1142 ep->qp.rq_pgtbl_size = 1143 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); 1144 ep->qp.rq_pgtbl_size = 1145 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1146 1147 ep->qp.rq_pgtbl_virt = 1148 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1149 &ep->qp.rq_pgtbl_phys, GFP_KERNEL); 1150 if (!ep->qp.rq_pgtbl_virt) { 1151 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", 1152 ep->qp.rq_pgtbl_size); 1153 goto mem_alloc_err; 1154 } 1155 1156 /* Allocate memory area for actual RQ element */ 1157 ep->qp.rq_virt = 1158 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1159 &ep->qp.rq_phys, GFP_KERNEL); 1160 if (!ep->qp.rq_virt) { 1161 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", 1162 ep->qp.rq_mem_size); 1163 goto mem_alloc_err; 1164 } 1165 1166 ep->qp.rq_first_qe = ep->qp.rq_virt; 1167 ep->qp.rq_prod_qe = ep->qp.rq_first_qe; 1168 ep->qp.rq_cons_qe = ep->qp.rq_first_qe; 1169 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; 1170 ep->qp.rq_prod_idx = 0x8000; 1171 ep->qp.rq_cons_idx = 0; 1172 ep->qp.rqe_left = hba->max_rqes; 1173 1174 setup_qp_page_tables(ep); 1175 1176 return 0; 1177 1178 mem_alloc_err: 1179 bnx2i_free_qp_resc(hba, ep); 1180 return -ENOMEM; 1181 } 1182 1183 1184 1185 /** 1186 * bnx2i_free_qp_resc - free memory resources held by QP 1187 * @hba: adapter structure pointer 1188 * @ep: endpoint (transport indentifier) structure 1189 * 1190 * Free QP resources - SQ/RQ/CQ memory and page tables. 1191 */ 1192 void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1193 { 1194 if (ep->qp.ctx_base) { 1195 iounmap(ep->qp.ctx_base); 1196 ep->qp.ctx_base = NULL; 1197 } 1198 /* Free SQ mem */ 1199 if (ep->qp.sq_pgtbl_virt) { 1200 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1201 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); 1202 ep->qp.sq_pgtbl_virt = NULL; 1203 ep->qp.sq_pgtbl_phys = 0; 1204 } 1205 if (ep->qp.sq_virt) { 1206 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1207 ep->qp.sq_virt, ep->qp.sq_phys); 1208 ep->qp.sq_virt = NULL; 1209 ep->qp.sq_phys = 0; 1210 } 1211 1212 /* Free RQ mem */ 1213 if (ep->qp.rq_pgtbl_virt) { 1214 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1215 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); 1216 ep->qp.rq_pgtbl_virt = NULL; 1217 ep->qp.rq_pgtbl_phys = 0; 1218 } 1219 if (ep->qp.rq_virt) { 1220 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1221 ep->qp.rq_virt, ep->qp.rq_phys); 1222 ep->qp.rq_virt = NULL; 1223 ep->qp.rq_phys = 0; 1224 } 1225 1226 /* Free CQ mem */ 1227 if (ep->qp.cq_pgtbl_virt) { 1228 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1229 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); 1230 ep->qp.cq_pgtbl_virt = NULL; 1231 ep->qp.cq_pgtbl_phys = 0; 1232 } 1233 if (ep->qp.cq_virt) { 1234 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1235 ep->qp.cq_virt, ep->qp.cq_phys); 1236 ep->qp.cq_virt = NULL; 1237 ep->qp.cq_phys = 0; 1238 } 1239 } 1240 1241 1242 /** 1243 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w 1244 * @hba: adapter structure pointer 1245 * 1246 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w 1247 * This results in iSCSi support validation and on-chip context manager 1248 * initialization. Firmware completes this handshake with a CQE carrying 1249 * the result of iscsi support validation. Parameter carried by 1250 * iscsi init request determines the number of offloaded connection and 1251 * tolerance level for iscsi protocol violation this hba/chip can support 1252 */ 1253 int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) 1254 { 1255 struct kwqe *kwqe_arr[3]; 1256 struct iscsi_kwqe_init1 iscsi_init; 1257 struct iscsi_kwqe_init2 iscsi_init2; 1258 int rc = 0; 1259 u64 mask64; 1260 1261 bnx2i_adjust_qp_size(hba); 1262 1263 iscsi_init.flags = 1264 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; 1265 if (en_tcp_dack) 1266 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; 1267 iscsi_init.reserved0 = 0; 1268 iscsi_init.num_cqs = 1; 1269 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; 1270 iscsi_init.hdr.flags = 1271 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1272 1273 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; 1274 iscsi_init.dummy_buffer_addr_hi = 1275 (u32) ((u64) hba->dummy_buf_dma >> 32); 1276 1277 hba->ctx_ccell_tasks = 1278 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); 1279 iscsi_init.num_ccells_per_conn = hba->num_ccell; 1280 iscsi_init.num_tasks_per_conn = hba->max_sqes; 1281 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 1282 iscsi_init.sq_num_wqes = hba->max_sqes; 1283 iscsi_init.cq_log_wqes_per_page = 1284 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); 1285 iscsi_init.cq_num_wqes = hba->max_cqes; 1286 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + 1287 (PAGE_SIZE - 1)) / PAGE_SIZE; 1288 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + 1289 (PAGE_SIZE - 1)) / PAGE_SIZE; 1290 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; 1291 iscsi_init.rq_num_wqes = hba->max_rqes; 1292 1293 1294 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; 1295 iscsi_init2.hdr.flags = 1296 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1297 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; 1298 mask64 = 0x0ULL; 1299 mask64 |= ( 1300 /* CISCO MDS */ 1301 (1UL << 1302 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | 1303 /* HP MSA1510i */ 1304 (1UL << 1305 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | 1306 /* EMC */ 1307 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); 1308 if (error_mask1) 1309 iscsi_init2.error_bit_map[0] = error_mask1; 1310 else 1311 iscsi_init2.error_bit_map[0] = (u32) mask64; 1312 1313 if (error_mask2) 1314 iscsi_init2.error_bit_map[1] = error_mask2; 1315 else 1316 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); 1317 1318 iscsi_error_mask = mask64; 1319 1320 kwqe_arr[0] = (struct kwqe *) &iscsi_init; 1321 kwqe_arr[1] = (struct kwqe *) &iscsi_init2; 1322 1323 if (hba->cnic && hba->cnic->submit_kwqes) 1324 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); 1325 return rc; 1326 } 1327 1328 1329 /** 1330 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. 1331 * @conn: iscsi connection 1332 * @cqe: pointer to newly DMA'ed CQE entry for processing 1333 * 1334 * process SCSI CMD Response CQE & complete the request to SCSI-ML 1335 */ 1336 static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, 1337 struct bnx2i_conn *bnx2i_conn, 1338 struct cqe *cqe) 1339 { 1340 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1341 struct bnx2i_cmd_response *resp_cqe; 1342 struct bnx2i_cmd *bnx2i_cmd; 1343 struct iscsi_task *task; 1344 struct iscsi_cmd_rsp *hdr; 1345 u32 datalen = 0; 1346 1347 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1348 spin_lock(&session->lock); 1349 task = iscsi_itt_to_task(conn, 1350 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); 1351 if (!task) 1352 goto fail; 1353 1354 bnx2i_cmd = task->dd_data; 1355 1356 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { 1357 conn->datain_pdus_cnt += 1358 resp_cqe->task_stat.read_stat.num_data_outs; 1359 conn->rxdata_octets += 1360 bnx2i_cmd->req.total_data_transfer_length; 1361 } else { 1362 conn->dataout_pdus_cnt += 1363 resp_cqe->task_stat.read_stat.num_data_outs; 1364 conn->r2t_pdus_cnt += 1365 resp_cqe->task_stat.read_stat.num_r2ts; 1366 conn->txdata_octets += 1367 bnx2i_cmd->req.total_data_transfer_length; 1368 } 1369 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); 1370 1371 hdr = (struct iscsi_cmd_rsp *)task->hdr; 1372 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1373 hdr->opcode = resp_cqe->op_code; 1374 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); 1375 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); 1376 hdr->response = resp_cqe->response; 1377 hdr->cmd_status = resp_cqe->status; 1378 hdr->flags = resp_cqe->response_flags; 1379 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); 1380 1381 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) 1382 goto done; 1383 1384 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { 1385 datalen = resp_cqe->data_length; 1386 if (datalen < 2) 1387 goto done; 1388 1389 if (datalen > BNX2I_RQ_WQE_SIZE) { 1390 iscsi_conn_printk(KERN_ERR, conn, 1391 "sense data len %d > RQ sz\n", 1392 datalen); 1393 datalen = BNX2I_RQ_WQE_SIZE; 1394 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { 1395 iscsi_conn_printk(KERN_ERR, conn, 1396 "sense data len %d > conn data\n", 1397 datalen); 1398 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; 1399 } 1400 1401 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); 1402 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); 1403 } 1404 1405 done: 1406 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 1407 conn->data, datalen); 1408 fail: 1409 spin_unlock(&session->lock); 1410 return 0; 1411 } 1412 1413 1414 /** 1415 * bnx2i_process_login_resp - this function handles iscsi login response 1416 * @session: iscsi session pointer 1417 * @bnx2i_conn: iscsi connection pointer 1418 * @cqe: pointer to newly DMA'ed CQE entry for processing 1419 * 1420 * process Login Response CQE & complete it to open-iscsi user daemon 1421 */ 1422 static int bnx2i_process_login_resp(struct iscsi_session *session, 1423 struct bnx2i_conn *bnx2i_conn, 1424 struct cqe *cqe) 1425 { 1426 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1427 struct iscsi_task *task; 1428 struct bnx2i_login_response *login; 1429 struct iscsi_login_rsp *resp_hdr; 1430 int pld_len; 1431 int pad_len; 1432 1433 login = (struct bnx2i_login_response *) cqe; 1434 spin_lock(&session->lock); 1435 task = iscsi_itt_to_task(conn, 1436 login->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1437 if (!task) 1438 goto done; 1439 1440 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1441 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1442 resp_hdr->opcode = login->op_code; 1443 resp_hdr->flags = login->response_flags; 1444 resp_hdr->max_version = login->version_max; 1445 resp_hdr->active_version = login->version_active; 1446 resp_hdr->hlength = 0; 1447 1448 hton24(resp_hdr->dlength, login->data_length); 1449 memcpy(resp_hdr->isid, &login->isid_lo, 6); 1450 resp_hdr->tsih = cpu_to_be16(login->tsih); 1451 resp_hdr->itt = task->hdr->itt; 1452 resp_hdr->statsn = cpu_to_be32(login->stat_sn); 1453 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); 1454 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); 1455 resp_hdr->status_class = login->status_class; 1456 resp_hdr->status_detail = login->status_detail; 1457 pld_len = login->data_length; 1458 bnx2i_conn->gen_pdu.resp_wr_ptr = 1459 bnx2i_conn->gen_pdu.resp_buf + pld_len; 1460 1461 pad_len = 0; 1462 if (pld_len & 0x3) 1463 pad_len = 4 - (pld_len % 4); 1464 1465 if (pad_len) { 1466 int i = 0; 1467 for (i = 0; i < pad_len; i++) { 1468 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1469 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1470 } 1471 } 1472 1473 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1474 bnx2i_conn->gen_pdu.resp_buf, 1475 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); 1476 done: 1477 spin_unlock(&session->lock); 1478 return 0; 1479 } 1480 1481 1482 /** 1483 * bnx2i_process_text_resp - this function handles iscsi text response 1484 * @session: iscsi session pointer 1485 * @bnx2i_conn: iscsi connection pointer 1486 * @cqe: pointer to newly DMA'ed CQE entry for processing 1487 * 1488 * process iSCSI Text Response CQE& complete it to open-iscsi user daemon 1489 */ 1490 static int bnx2i_process_text_resp(struct iscsi_session *session, 1491 struct bnx2i_conn *bnx2i_conn, 1492 struct cqe *cqe) 1493 { 1494 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1495 struct iscsi_task *task; 1496 struct bnx2i_text_response *text; 1497 struct iscsi_text_rsp *resp_hdr; 1498 int pld_len; 1499 int pad_len; 1500 1501 text = (struct bnx2i_text_response *) cqe; 1502 spin_lock(&session->lock); 1503 task = iscsi_itt_to_task(conn, text->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1504 if (!task) 1505 goto done; 1506 1507 resp_hdr = (struct iscsi_text_rsp *)&bnx2i_conn->gen_pdu.resp_hdr; 1508 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1509 resp_hdr->opcode = text->op_code; 1510 resp_hdr->flags = text->response_flags; 1511 resp_hdr->hlength = 0; 1512 1513 hton24(resp_hdr->dlength, text->data_length); 1514 resp_hdr->itt = task->hdr->itt; 1515 resp_hdr->ttt = cpu_to_be32(text->ttt); 1516 resp_hdr->statsn = task->hdr->exp_statsn; 1517 resp_hdr->exp_cmdsn = cpu_to_be32(text->exp_cmd_sn); 1518 resp_hdr->max_cmdsn = cpu_to_be32(text->max_cmd_sn); 1519 pld_len = text->data_length; 1520 bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf + 1521 pld_len; 1522 pad_len = 0; 1523 if (pld_len & 0x3) 1524 pad_len = 4 - (pld_len % 4); 1525 1526 if (pad_len) { 1527 int i = 0; 1528 for (i = 0; i < pad_len; i++) { 1529 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1530 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1531 } 1532 } 1533 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1534 bnx2i_conn->gen_pdu.resp_buf, 1535 bnx2i_conn->gen_pdu.resp_wr_ptr - 1536 bnx2i_conn->gen_pdu.resp_buf); 1537 done: 1538 spin_unlock(&session->lock); 1539 return 0; 1540 } 1541 1542 1543 /** 1544 * bnx2i_process_tmf_resp - this function handles iscsi TMF response 1545 * @session: iscsi session pointer 1546 * @bnx2i_conn: iscsi connection pointer 1547 * @cqe: pointer to newly DMA'ed CQE entry for processing 1548 * 1549 * process iSCSI TMF Response CQE and wake up the driver eh thread. 1550 */ 1551 static int bnx2i_process_tmf_resp(struct iscsi_session *session, 1552 struct bnx2i_conn *bnx2i_conn, 1553 struct cqe *cqe) 1554 { 1555 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1556 struct iscsi_task *task; 1557 struct bnx2i_tmf_response *tmf_cqe; 1558 struct iscsi_tm_rsp *resp_hdr; 1559 1560 tmf_cqe = (struct bnx2i_tmf_response *)cqe; 1561 spin_lock(&session->lock); 1562 task = iscsi_itt_to_task(conn, 1563 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); 1564 if (!task) 1565 goto done; 1566 1567 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1568 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1569 resp_hdr->opcode = tmf_cqe->op_code; 1570 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); 1571 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); 1572 resp_hdr->itt = task->hdr->itt; 1573 resp_hdr->response = tmf_cqe->response; 1574 1575 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1576 done: 1577 spin_unlock(&session->lock); 1578 return 0; 1579 } 1580 1581 /** 1582 * bnx2i_process_logout_resp - this function handles iscsi logout response 1583 * @session: iscsi session pointer 1584 * @bnx2i_conn: iscsi connection pointer 1585 * @cqe: pointer to newly DMA'ed CQE entry for processing 1586 * 1587 * process iSCSI Logout Response CQE & make function call to 1588 * notify the user daemon. 1589 */ 1590 static int bnx2i_process_logout_resp(struct iscsi_session *session, 1591 struct bnx2i_conn *bnx2i_conn, 1592 struct cqe *cqe) 1593 { 1594 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1595 struct iscsi_task *task; 1596 struct bnx2i_logout_response *logout; 1597 struct iscsi_logout_rsp *resp_hdr; 1598 1599 logout = (struct bnx2i_logout_response *) cqe; 1600 spin_lock(&session->lock); 1601 task = iscsi_itt_to_task(conn, 1602 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); 1603 if (!task) 1604 goto done; 1605 1606 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1607 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1608 resp_hdr->opcode = logout->op_code; 1609 resp_hdr->flags = logout->response; 1610 resp_hdr->hlength = 0; 1611 1612 resp_hdr->itt = task->hdr->itt; 1613 resp_hdr->statsn = task->hdr->exp_statsn; 1614 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); 1615 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); 1616 1617 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); 1618 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); 1619 1620 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1621 1622 bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD; 1623 done: 1624 spin_unlock(&session->lock); 1625 return 0; 1626 } 1627 1628 /** 1629 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE 1630 * @session: iscsi session pointer 1631 * @bnx2i_conn: iscsi connection pointer 1632 * @cqe: pointer to newly DMA'ed CQE entry for processing 1633 * 1634 * process iSCSI NOPIN local completion CQE, frees IIT and command structures 1635 */ 1636 static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, 1637 struct bnx2i_conn *bnx2i_conn, 1638 struct cqe *cqe) 1639 { 1640 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1641 struct bnx2i_nop_in_msg *nop_in; 1642 struct iscsi_task *task; 1643 1644 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1645 spin_lock(&session->lock); 1646 task = iscsi_itt_to_task(conn, 1647 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); 1648 if (task) 1649 __iscsi_put_task(task); 1650 spin_unlock(&session->lock); 1651 } 1652 1653 /** 1654 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd 1655 * @conn: iscsi connection 1656 * 1657 * Firmware advances RQ producer index for every unsolicited PDU even if 1658 * payload data length is '0'. This function makes corresponding 1659 * adjustments on the driver side to match this f/w behavior 1660 */ 1661 static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) 1662 { 1663 char dummy_rq_data[2]; 1664 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); 1665 bnx2i_put_rq_buf(bnx2i_conn, 1); 1666 } 1667 1668 1669 /** 1670 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE 1671 * @session: iscsi session pointer 1672 * @bnx2i_conn: iscsi connection pointer 1673 * @cqe: pointer to newly DMA'ed CQE entry for processing 1674 * 1675 * process iSCSI target's proactive iSCSI NOPIN request 1676 */ 1677 static int bnx2i_process_nopin_mesg(struct iscsi_session *session, 1678 struct bnx2i_conn *bnx2i_conn, 1679 struct cqe *cqe) 1680 { 1681 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1682 struct iscsi_task *task; 1683 struct bnx2i_nop_in_msg *nop_in; 1684 struct iscsi_nopin *hdr; 1685 int tgt_async_nop = 0; 1686 1687 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1688 1689 spin_lock(&session->lock); 1690 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; 1691 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1692 hdr->opcode = nop_in->op_code; 1693 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); 1694 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); 1695 hdr->ttt = cpu_to_be32(nop_in->ttt); 1696 1697 if (nop_in->itt == (u16) RESERVED_ITT) { 1698 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1699 hdr->itt = RESERVED_ITT; 1700 tgt_async_nop = 1; 1701 goto done; 1702 } 1703 1704 /* this is a response to one of our nop-outs */ 1705 task = iscsi_itt_to_task(conn, 1706 (itt_t) (nop_in->itt & ISCSI_NOP_IN_MSG_INDEX)); 1707 if (task) { 1708 hdr->flags = ISCSI_FLAG_CMD_FINAL; 1709 hdr->itt = task->hdr->itt; 1710 hdr->ttt = cpu_to_be32(nop_in->ttt); 1711 memcpy(hdr->lun, nop_in->lun, 8); 1712 } 1713 done: 1714 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); 1715 spin_unlock(&session->lock); 1716 1717 return tgt_async_nop; 1718 } 1719 1720 1721 /** 1722 * bnx2i_process_async_mesg - this function handles iscsi async message 1723 * @session: iscsi session pointer 1724 * @bnx2i_conn: iscsi connection pointer 1725 * @cqe: pointer to newly DMA'ed CQE entry for processing 1726 * 1727 * process iSCSI ASYNC Message 1728 */ 1729 static void bnx2i_process_async_mesg(struct iscsi_session *session, 1730 struct bnx2i_conn *bnx2i_conn, 1731 struct cqe *cqe) 1732 { 1733 struct bnx2i_async_msg *async_cqe; 1734 struct iscsi_async *resp_hdr; 1735 u8 async_event; 1736 1737 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1738 1739 async_cqe = (struct bnx2i_async_msg *)cqe; 1740 async_event = async_cqe->async_event; 1741 1742 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { 1743 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, 1744 "async: scsi events not supported\n"); 1745 return; 1746 } 1747 1748 spin_lock(&session->lock); 1749 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; 1750 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1751 resp_hdr->opcode = async_cqe->op_code; 1752 resp_hdr->flags = 0x80; 1753 1754 memcpy(resp_hdr->lun, async_cqe->lun, 8); 1755 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); 1756 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); 1757 1758 resp_hdr->async_event = async_cqe->async_event; 1759 resp_hdr->async_vcode = async_cqe->async_vcode; 1760 1761 resp_hdr->param1 = cpu_to_be16(async_cqe->param1); 1762 resp_hdr->param2 = cpu_to_be16(async_cqe->param2); 1763 resp_hdr->param3 = cpu_to_be16(async_cqe->param3); 1764 1765 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, 1766 (struct iscsi_hdr *)resp_hdr, NULL, 0); 1767 spin_unlock(&session->lock); 1768 } 1769 1770 1771 /** 1772 * bnx2i_process_reject_mesg - process iscsi reject pdu 1773 * @session: iscsi session pointer 1774 * @bnx2i_conn: iscsi connection pointer 1775 * @cqe: pointer to newly DMA'ed CQE entry for processing 1776 * 1777 * process iSCSI REJECT message 1778 */ 1779 static void bnx2i_process_reject_mesg(struct iscsi_session *session, 1780 struct bnx2i_conn *bnx2i_conn, 1781 struct cqe *cqe) 1782 { 1783 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1784 struct bnx2i_reject_msg *reject; 1785 struct iscsi_reject *hdr; 1786 1787 reject = (struct bnx2i_reject_msg *) cqe; 1788 if (reject->data_length) { 1789 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); 1790 bnx2i_put_rq_buf(bnx2i_conn, 1); 1791 } else 1792 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1793 1794 spin_lock(&session->lock); 1795 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; 1796 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1797 hdr->opcode = reject->op_code; 1798 hdr->reason = reject->reason; 1799 hton24(hdr->dlength, reject->data_length); 1800 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); 1801 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); 1802 hdr->ffffffff = cpu_to_be32(RESERVED_ITT); 1803 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, 1804 reject->data_length); 1805 spin_unlock(&session->lock); 1806 } 1807 1808 /** 1809 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion 1810 * @session: iscsi session pointer 1811 * @bnx2i_conn: iscsi connection pointer 1812 * @cqe: pointer to newly DMA'ed CQE entry for processing 1813 * 1814 * process command cleanup response CQE during conn shutdown or error recovery 1815 */ 1816 static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, 1817 struct bnx2i_conn *bnx2i_conn, 1818 struct cqe *cqe) 1819 { 1820 struct bnx2i_cleanup_response *cmd_clean_rsp; 1821 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1822 struct iscsi_task *task; 1823 1824 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; 1825 spin_lock(&session->lock); 1826 task = iscsi_itt_to_task(conn, 1827 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1828 if (!task) 1829 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", 1830 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1831 spin_unlock(&session->lock); 1832 complete(&bnx2i_conn->cmd_cleanup_cmpl); 1833 } 1834 1835 1836 1837 /** 1838 * bnx2i_process_new_cqes - process newly DMA'ed CQE's 1839 * @bnx2i_conn: iscsi connection 1840 * 1841 * this function is called by generic KCQ handler to process all pending CQE's 1842 */ 1843 static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) 1844 { 1845 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1846 struct iscsi_session *session = conn->session; 1847 struct qp_info *qp = &bnx2i_conn->ep->qp; 1848 struct bnx2i_nop_in_msg *nopin; 1849 int tgt_async_msg; 1850 1851 while (1) { 1852 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; 1853 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) 1854 break; 1855 1856 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) { 1857 if (nopin->op_code == ISCSI_OP_NOOP_IN && 1858 nopin->itt == (u16) RESERVED_ITT) { 1859 printk(KERN_ALERT "bnx2i: Unsolicited " 1860 "NOP-In detected for suspended " 1861 "connection dev=%s!\n", 1862 bnx2i_conn->hba->netdev->name); 1863 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1864 goto cqe_out; 1865 } 1866 break; 1867 } 1868 tgt_async_msg = 0; 1869 1870 switch (nopin->op_code) { 1871 case ISCSI_OP_SCSI_CMD_RSP: 1872 case ISCSI_OP_SCSI_DATA_IN: 1873 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, 1874 qp->cq_cons_qe); 1875 break; 1876 case ISCSI_OP_LOGIN_RSP: 1877 bnx2i_process_login_resp(session, bnx2i_conn, 1878 qp->cq_cons_qe); 1879 break; 1880 case ISCSI_OP_SCSI_TMFUNC_RSP: 1881 bnx2i_process_tmf_resp(session, bnx2i_conn, 1882 qp->cq_cons_qe); 1883 break; 1884 case ISCSI_OP_TEXT_RSP: 1885 bnx2i_process_text_resp(session, bnx2i_conn, 1886 qp->cq_cons_qe); 1887 break; 1888 case ISCSI_OP_LOGOUT_RSP: 1889 bnx2i_process_logout_resp(session, bnx2i_conn, 1890 qp->cq_cons_qe); 1891 break; 1892 case ISCSI_OP_NOOP_IN: 1893 if (bnx2i_process_nopin_mesg(session, bnx2i_conn, 1894 qp->cq_cons_qe)) 1895 tgt_async_msg = 1; 1896 break; 1897 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: 1898 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, 1899 qp->cq_cons_qe); 1900 break; 1901 case ISCSI_OP_ASYNC_EVENT: 1902 bnx2i_process_async_mesg(session, bnx2i_conn, 1903 qp->cq_cons_qe); 1904 tgt_async_msg = 1; 1905 break; 1906 case ISCSI_OP_REJECT: 1907 bnx2i_process_reject_mesg(session, bnx2i_conn, 1908 qp->cq_cons_qe); 1909 break; 1910 case ISCSI_OPCODE_CLEANUP_RESPONSE: 1911 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, 1912 qp->cq_cons_qe); 1913 break; 1914 default: 1915 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 1916 nopin->op_code); 1917 } 1918 if (!tgt_async_msg) 1919 bnx2i_conn->ep->num_active_cmds--; 1920 cqe_out: 1921 /* clear out in production version only, till beta keep opcode 1922 * field intact, will be helpful in debugging (context dump) 1923 * nopin->op_code = 0; 1924 */ 1925 qp->cqe_exp_seq_sn++; 1926 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) 1927 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1928 1929 if (qp->cq_cons_qe == qp->cq_last_qe) { 1930 qp->cq_cons_qe = qp->cq_first_qe; 1931 qp->cq_cons_idx = 0; 1932 } else { 1933 qp->cq_cons_qe++; 1934 qp->cq_cons_idx++; 1935 } 1936 } 1937 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); 1938 } 1939 1940 /** 1941 * bnx2i_fastpath_notification - process global event queue (KCQ) 1942 * @hba: adapter structure pointer 1943 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry 1944 * 1945 * Fast path event notification handler, KCQ entry carries context id 1946 * of the connection that has 1 or more pending CQ entries 1947 */ 1948 static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, 1949 struct iscsi_kcqe *new_cqe_kcqe) 1950 { 1951 struct bnx2i_conn *conn; 1952 u32 iscsi_cid; 1953 1954 iscsi_cid = new_cqe_kcqe->iscsi_conn_id; 1955 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1956 1957 if (!conn) { 1958 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); 1959 return; 1960 } 1961 if (!conn->ep) { 1962 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); 1963 return; 1964 } 1965 1966 bnx2i_process_new_cqes(conn); 1967 } 1968 1969 1970 /** 1971 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE 1972 * @hba: adapter structure pointer 1973 * @update_kcqe: kcqe pointer 1974 * 1975 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration 1976 */ 1977 static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, 1978 struct iscsi_kcqe *update_kcqe) 1979 { 1980 struct bnx2i_conn *conn; 1981 u32 iscsi_cid; 1982 1983 iscsi_cid = update_kcqe->iscsi_conn_id; 1984 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1985 1986 if (!conn) { 1987 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); 1988 return; 1989 } 1990 if (!conn->ep) { 1991 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); 1992 return; 1993 } 1994 1995 if (update_kcqe->completion_status) { 1996 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); 1997 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; 1998 } else 1999 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; 2000 2001 wake_up_interruptible(&conn->ep->ofld_wait); 2002 } 2003 2004 2005 /** 2006 * bnx2i_recovery_que_add_conn - add connection to recovery queue 2007 * @hba: adapter structure pointer 2008 * @bnx2i_conn: iscsi connection 2009 * 2010 * Add connection to recovery queue and schedule adapter eh worker 2011 */ 2012 static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, 2013 struct bnx2i_conn *bnx2i_conn) 2014 { 2015 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, 2016 ISCSI_ERR_CONN_FAILED); 2017 } 2018 2019 2020 /** 2021 * bnx2i_process_tcp_error - process error notification on a given connection 2022 * 2023 * @hba: adapter structure pointer 2024 * @tcp_err: tcp error kcqe pointer 2025 * 2026 * handles tcp level error notifications from FW. 2027 */ 2028 static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, 2029 struct iscsi_kcqe *tcp_err) 2030 { 2031 struct bnx2i_conn *bnx2i_conn; 2032 u32 iscsi_cid; 2033 2034 iscsi_cid = tcp_err->iscsi_conn_id; 2035 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 2036 2037 if (!bnx2i_conn) { 2038 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 2039 return; 2040 } 2041 2042 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", 2043 iscsi_cid, tcp_err->completion_status); 2044 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2045 } 2046 2047 2048 /** 2049 * bnx2i_process_iscsi_error - process error notification on a given connection 2050 * @hba: adapter structure pointer 2051 * @iscsi_err: iscsi error kcqe pointer 2052 * 2053 * handles iscsi error notifications from the FW. Firmware based in initial 2054 * handshake classifies iscsi protocol / TCP rfc violation into either 2055 * warning or error indications. If indication is of "Error" type, driver 2056 * will initiate session recovery for that connection/session. For 2057 * "Warning" type indication, driver will put out a system log message 2058 * (there will be only one message for each type for the life of the 2059 * session, this is to avoid un-necessarily overloading the system) 2060 */ 2061 static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, 2062 struct iscsi_kcqe *iscsi_err) 2063 { 2064 struct bnx2i_conn *bnx2i_conn; 2065 u32 iscsi_cid; 2066 char warn_notice[] = "iscsi_warning"; 2067 char error_notice[] = "iscsi_error"; 2068 char additional_notice[64]; 2069 char *message; 2070 int need_recovery; 2071 u64 err_mask64; 2072 2073 iscsi_cid = iscsi_err->iscsi_conn_id; 2074 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 2075 if (!bnx2i_conn) { 2076 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 2077 return; 2078 } 2079 2080 err_mask64 = (0x1ULL << iscsi_err->completion_status); 2081 2082 if (err_mask64 & iscsi_error_mask) { 2083 need_recovery = 0; 2084 message = warn_notice; 2085 } else { 2086 need_recovery = 1; 2087 message = error_notice; 2088 } 2089 2090 switch (iscsi_err->completion_status) { 2091 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: 2092 strcpy(additional_notice, "hdr digest err"); 2093 break; 2094 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: 2095 strcpy(additional_notice, "data digest err"); 2096 break; 2097 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: 2098 strcpy(additional_notice, "wrong opcode rcvd"); 2099 break; 2100 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: 2101 strcpy(additional_notice, "AHS len > 0 rcvd"); 2102 break; 2103 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: 2104 strcpy(additional_notice, "invalid ITT rcvd"); 2105 break; 2106 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: 2107 strcpy(additional_notice, "wrong StatSN rcvd"); 2108 break; 2109 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: 2110 strcpy(additional_notice, "wrong DataSN rcvd"); 2111 break; 2112 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: 2113 strcpy(additional_notice, "pend R2T violation"); 2114 break; 2115 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: 2116 strcpy(additional_notice, "ERL0, UO"); 2117 break; 2118 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: 2119 strcpy(additional_notice, "ERL0, U1"); 2120 break; 2121 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: 2122 strcpy(additional_notice, "ERL0, U2"); 2123 break; 2124 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: 2125 strcpy(additional_notice, "ERL0, U3"); 2126 break; 2127 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: 2128 strcpy(additional_notice, "ERL0, U4"); 2129 break; 2130 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: 2131 strcpy(additional_notice, "ERL0, U5"); 2132 break; 2133 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: 2134 strcpy(additional_notice, "ERL0, U6"); 2135 break; 2136 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: 2137 strcpy(additional_notice, "invalid resi len"); 2138 break; 2139 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: 2140 strcpy(additional_notice, "MRDSL violation"); 2141 break; 2142 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: 2143 strcpy(additional_notice, "F-bit not set"); 2144 break; 2145 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: 2146 strcpy(additional_notice, "invalid TTT"); 2147 break; 2148 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: 2149 strcpy(additional_notice, "invalid DataSN"); 2150 break; 2151 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: 2152 strcpy(additional_notice, "burst len violation"); 2153 break; 2154 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: 2155 strcpy(additional_notice, "buf offset violation"); 2156 break; 2157 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: 2158 strcpy(additional_notice, "invalid LUN field"); 2159 break; 2160 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: 2161 strcpy(additional_notice, "invalid R2TSN field"); 2162 break; 2163 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ 2164 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 2165 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: 2166 strcpy(additional_notice, "invalid cmd len1"); 2167 break; 2168 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ 2169 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 2170 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: 2171 strcpy(additional_notice, "invalid cmd len2"); 2172 break; 2173 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: 2174 strcpy(additional_notice, 2175 "pend r2t exceeds MaxOutstandingR2T value"); 2176 break; 2177 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: 2178 strcpy(additional_notice, "TTT is rsvd"); 2179 break; 2180 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: 2181 strcpy(additional_notice, "MBL violation"); 2182 break; 2183 #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ 2184 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO 2185 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: 2186 strcpy(additional_notice, "data seg len != 0"); 2187 break; 2188 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: 2189 strcpy(additional_notice, "reject pdu len error"); 2190 break; 2191 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: 2192 strcpy(additional_notice, "async pdu len error"); 2193 break; 2194 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: 2195 strcpy(additional_notice, "nopin pdu len error"); 2196 break; 2197 #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ 2198 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP 2199 case BNX2_ERR_PEND_R2T_IN_CLEANUP: 2200 strcpy(additional_notice, "pend r2t in cleanup"); 2201 break; 2202 2203 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: 2204 strcpy(additional_notice, "IP fragments rcvd"); 2205 break; 2206 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: 2207 strcpy(additional_notice, "IP options error"); 2208 break; 2209 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: 2210 strcpy(additional_notice, "urgent flag error"); 2211 break; 2212 default: 2213 printk(KERN_ALERT "iscsi_err - unknown err %x\n", 2214 iscsi_err->completion_status); 2215 } 2216 2217 if (need_recovery) { 2218 iscsi_conn_printk(KERN_ALERT, 2219 bnx2i_conn->cls_conn->dd_data, 2220 "bnx2i: %s - %s\n", 2221 message, additional_notice); 2222 2223 iscsi_conn_printk(KERN_ALERT, 2224 bnx2i_conn->cls_conn->dd_data, 2225 "conn_err - hostno %d conn %p, " 2226 "iscsi_cid %x cid %x\n", 2227 bnx2i_conn->hba->shost->host_no, 2228 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, 2229 bnx2i_conn->ep->ep_cid); 2230 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2231 } else 2232 if (!test_and_set_bit(iscsi_err->completion_status, 2233 (void *) &bnx2i_conn->violation_notified)) 2234 iscsi_conn_printk(KERN_ALERT, 2235 bnx2i_conn->cls_conn->dd_data, 2236 "bnx2i: %s - %s\n", 2237 message, additional_notice); 2238 } 2239 2240 2241 /** 2242 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion 2243 * @hba: adapter structure pointer 2244 * @conn_destroy: conn destroy kcqe pointer 2245 * 2246 * handles connection destroy completion request. 2247 */ 2248 static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, 2249 struct iscsi_kcqe *conn_destroy) 2250 { 2251 struct bnx2i_endpoint *ep; 2252 2253 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); 2254 if (!ep) { 2255 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " 2256 "offload request, unexpected complection\n"); 2257 return; 2258 } 2259 2260 if (hba != ep->hba) { 2261 printk(KERN_ALERT "conn destroy- error hba mis-match\n"); 2262 return; 2263 } 2264 2265 if (conn_destroy->completion_status) { 2266 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); 2267 ep->state = EP_STATE_CLEANUP_FAILED; 2268 } else 2269 ep->state = EP_STATE_CLEANUP_CMPL; 2270 wake_up_interruptible(&ep->ofld_wait); 2271 } 2272 2273 2274 /** 2275 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion 2276 * @hba: adapter structure pointer 2277 * @ofld_kcqe: conn offload kcqe pointer 2278 * 2279 * handles initial connection offload completion, ep_connect() thread is 2280 * woken-up to continue with LLP connect process 2281 */ 2282 static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, 2283 struct iscsi_kcqe *ofld_kcqe) 2284 { 2285 u32 cid_addr; 2286 struct bnx2i_endpoint *ep; 2287 u32 cid_num; 2288 2289 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); 2290 if (!ep) { 2291 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); 2292 return; 2293 } 2294 2295 if (hba != ep->hba) { 2296 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); 2297 return; 2298 } 2299 2300 if (ofld_kcqe->completion_status) { 2301 ep->state = EP_STATE_OFLD_FAILED; 2302 if (ofld_kcqe->completion_status == 2303 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) 2304 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - unable " 2305 "to allocate iSCSI context resources\n", 2306 hba->netdev->name); 2307 else if (ofld_kcqe->completion_status == 2308 ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE) 2309 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " 2310 "opcode\n", hba->netdev->name); 2311 else if (ofld_kcqe->completion_status == 2312 ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY) 2313 /* error status code valid only for 5771x chipset */ 2314 ep->state = EP_STATE_OFLD_FAILED_CID_BUSY; 2315 else 2316 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " 2317 "error code %d\n", hba->netdev->name, 2318 ofld_kcqe->completion_status); 2319 } else { 2320 ep->state = EP_STATE_OFLD_COMPL; 2321 cid_addr = ofld_kcqe->iscsi_conn_context_id; 2322 cid_num = bnx2i_get_cid_num(ep); 2323 ep->ep_cid = cid_addr; 2324 ep->qp.ctx_base = NULL; 2325 } 2326 wake_up_interruptible(&ep->ofld_wait); 2327 } 2328 2329 /** 2330 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE 2331 * @hba: adapter structure pointer 2332 * @update_kcqe: kcqe pointer 2333 * 2334 * Generic KCQ event handler/dispatcher 2335 */ 2336 static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], 2337 u32 num_cqe) 2338 { 2339 struct bnx2i_hba *hba = context; 2340 int i = 0; 2341 struct iscsi_kcqe *ikcqe = NULL; 2342 2343 while (i < num_cqe) { 2344 ikcqe = (struct iscsi_kcqe *) kcqe[i++]; 2345 2346 if (ikcqe->op_code == 2347 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) 2348 bnx2i_fastpath_notification(hba, ikcqe); 2349 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) 2350 bnx2i_process_ofld_cmpl(hba, ikcqe); 2351 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) 2352 bnx2i_process_update_conn_cmpl(hba, ikcqe); 2353 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { 2354 if (ikcqe->completion_status != 2355 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) 2356 bnx2i_iscsi_license_error(hba, ikcqe->\ 2357 completion_status); 2358 else { 2359 set_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2360 bnx2i_get_link_state(hba); 2361 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " 2362 "ISCSI_INIT passed\n", 2363 (u8)hba->pcidev->bus->number, 2364 hba->pci_devno, 2365 (u8)hba->pci_func); 2366 2367 2368 } 2369 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) 2370 bnx2i_process_conn_destroy_cmpl(hba, ikcqe); 2371 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) 2372 bnx2i_process_iscsi_error(hba, ikcqe); 2373 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) 2374 bnx2i_process_tcp_error(hba, ikcqe); 2375 else 2376 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 2377 ikcqe->op_code); 2378 } 2379 } 2380 2381 2382 /** 2383 * bnx2i_indicate_netevent - Generic netdev event handler 2384 * @context: adapter structure pointer 2385 * @event: event type 2386 * 2387 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, 2388 * NETDEV_GOING_DOWN and NETDEV_CHANGE 2389 */ 2390 static void bnx2i_indicate_netevent(void *context, unsigned long event) 2391 { 2392 struct bnx2i_hba *hba = context; 2393 2394 switch (event) { 2395 case NETDEV_UP: 2396 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 2397 bnx2i_send_fw_iscsi_init_msg(hba); 2398 break; 2399 case NETDEV_DOWN: 2400 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2401 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2402 break; 2403 case NETDEV_GOING_DOWN: 2404 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2405 iscsi_host_for_each_session(hba->shost, 2406 bnx2i_drop_session); 2407 break; 2408 case NETDEV_CHANGE: 2409 bnx2i_get_link_state(hba); 2410 break; 2411 default: 2412 ; 2413 } 2414 } 2415 2416 2417 /** 2418 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion 2419 * @cm_sk: cnic sock structure pointer 2420 * 2421 * function callback exported via bnx2i - cnic driver interface to 2422 * indicate completion of option-2 TCP connect request. 2423 */ 2424 static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) 2425 { 2426 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2427 2428 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) 2429 ep->state = EP_STATE_CONNECT_FAILED; 2430 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) 2431 ep->state = EP_STATE_CONNECT_COMPL; 2432 else 2433 ep->state = EP_STATE_CONNECT_FAILED; 2434 2435 wake_up_interruptible(&ep->ofld_wait); 2436 } 2437 2438 2439 /** 2440 * bnx2i_cm_close_cmpl - process tcp conn close completion 2441 * @cm_sk: cnic sock structure pointer 2442 * 2443 * function callback exported via bnx2i - cnic driver interface to 2444 * indicate completion of option-2 graceful TCP connect shutdown 2445 */ 2446 static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) 2447 { 2448 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2449 2450 ep->state = EP_STATE_DISCONN_COMPL; 2451 wake_up_interruptible(&ep->ofld_wait); 2452 } 2453 2454 2455 /** 2456 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion 2457 * @cm_sk: cnic sock structure pointer 2458 * 2459 * function callback exported via bnx2i - cnic driver interface to 2460 * indicate completion of option-2 abortive TCP connect termination 2461 */ 2462 static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) 2463 { 2464 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2465 2466 ep->state = EP_STATE_DISCONN_COMPL; 2467 wake_up_interruptible(&ep->ofld_wait); 2468 } 2469 2470 2471 /** 2472 * bnx2i_cm_remote_close - process received TCP FIN 2473 * @hba: adapter structure pointer 2474 * @update_kcqe: kcqe pointer 2475 * 2476 * function callback exported via bnx2i - cnic driver interface to indicate 2477 * async TCP events such as FIN 2478 */ 2479 static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) 2480 { 2481 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2482 2483 ep->state = EP_STATE_TCP_FIN_RCVD; 2484 if (ep->conn) 2485 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2486 } 2487 2488 /** 2489 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup 2490 * @hba: adapter structure pointer 2491 * @update_kcqe: kcqe pointer 2492 * 2493 * function callback exported via bnx2i - cnic driver interface to 2494 * indicate async TCP events (RST) sent by the peer. 2495 */ 2496 static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) 2497 { 2498 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2499 u32 old_state = ep->state; 2500 2501 ep->state = EP_STATE_TCP_RST_RCVD; 2502 if (old_state == EP_STATE_DISCONN_START) 2503 wake_up_interruptible(&ep->ofld_wait); 2504 else 2505 if (ep->conn) 2506 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2507 } 2508 2509 2510 static int bnx2i_send_nl_mesg(void *context, u32 msg_type, 2511 char *buf, u16 buflen) 2512 { 2513 struct bnx2i_hba *hba = context; 2514 int rc; 2515 2516 if (!hba) 2517 return -ENODEV; 2518 2519 rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, 2520 msg_type, buf, buflen); 2521 if (rc) 2522 printk(KERN_ALERT "bnx2i: private nl message send error\n"); 2523 2524 return rc; 2525 } 2526 2527 2528 /** 2529 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure 2530 * carrying callback function pointers 2531 * 2532 */ 2533 struct cnic_ulp_ops bnx2i_cnic_cb = { 2534 .cnic_init = bnx2i_ulp_init, 2535 .cnic_exit = bnx2i_ulp_exit, 2536 .cnic_start = bnx2i_start, 2537 .cnic_stop = bnx2i_stop, 2538 .indicate_kcqes = bnx2i_indicate_kcqe, 2539 .indicate_netevent = bnx2i_indicate_netevent, 2540 .cm_connect_complete = bnx2i_cm_connect_cmpl, 2541 .cm_close_complete = bnx2i_cm_close_cmpl, 2542 .cm_abort_complete = bnx2i_cm_abort_cmpl, 2543 .cm_remote_close = bnx2i_cm_remote_close, 2544 .cm_remote_abort = bnx2i_cm_remote_abort, 2545 .iscsi_nl_send_msg = bnx2i_send_nl_mesg, 2546 .owner = THIS_MODULE 2547 }; 2548 2549 2550 /** 2551 * bnx2i_map_ep_dbell_regs - map connection doorbell registers 2552 * @ep: bnx2i endpoint 2553 * 2554 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these 2555 * register in BAR #0. Whereas in 57710 these register are accessed by 2556 * mapping BAR #1 2557 */ 2558 int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) 2559 { 2560 u32 cid_num; 2561 u32 reg_off; 2562 u32 first_l4l5; 2563 u32 ctx_sz; 2564 u32 config2; 2565 resource_size_t reg_base; 2566 2567 cid_num = bnx2i_get_cid_num(ep); 2568 2569 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 2570 reg_base = pci_resource_start(ep->hba->pcidev, 2571 BNX2X_DOORBELL_PCI_BAR); 2572 reg_off = BNX2I_5771X_DBELL_PAGE_SIZE * (cid_num & 0x1FFFF) + 2573 DPM_TRIGER_TYPE; 2574 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); 2575 goto arm_cq; 2576 } 2577 2578 reg_base = ep->hba->netdev->base_addr; 2579 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && 2580 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { 2581 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); 2582 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; 2583 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; 2584 if (ctx_sz) 2585 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE 2586 + BNX2I_570X_PAGE_SIZE_DEFAULT * 2587 (((cid_num - first_l4l5) / ctx_sz) + 256); 2588 else 2589 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2590 } else 2591 /* 5709 device in normal node and 5706/5708 devices */ 2592 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2593 2594 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 2595 MB_KERNEL_CTX_SIZE); 2596 if (!ep->qp.ctx_base) 2597 return -ENOMEM; 2598 2599 arm_cq: 2600 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); 2601 return 0; 2602 } 2603