1 /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. 2 * 3 * Copyright (c) 2006 - 2011 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 DECLARE_PER_CPU(struct bnx2i_percpu_s, bnx2i_percpu); 21 22 /** 23 * bnx2i_get_cid_num - get cid from ep 24 * @ep: endpoint pointer 25 * 26 * Only applicable to 57710 family of devices 27 */ 28 static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) 29 { 30 u32 cid; 31 32 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 33 cid = ep->ep_cid; 34 else 35 cid = GET_CID_NUM(ep->ep_cid); 36 return cid; 37 } 38 39 40 /** 41 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type 42 * @hba: Adapter for which adjustments is to be made 43 * 44 * Only applicable to 57710 family of devices 45 */ 46 static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) 47 { 48 u32 num_elements_per_pg; 49 50 if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || 51 test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || 52 test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { 53 if (!is_power_of_2(hba->max_sqes)) 54 hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); 55 56 if (!is_power_of_2(hba->max_rqes)) 57 hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); 58 } 59 60 /* Adjust each queue size if the user selection does not 61 * yield integral num of page buffers 62 */ 63 /* adjust SQ */ 64 num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 65 if (hba->max_sqes < num_elements_per_pg) 66 hba->max_sqes = num_elements_per_pg; 67 else if (hba->max_sqes % num_elements_per_pg) 68 hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & 69 ~(num_elements_per_pg - 1); 70 71 /* adjust CQ */ 72 num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; 73 if (hba->max_cqes < num_elements_per_pg) 74 hba->max_cqes = num_elements_per_pg; 75 else if (hba->max_cqes % num_elements_per_pg) 76 hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & 77 ~(num_elements_per_pg - 1); 78 79 /* adjust RQ */ 80 num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; 81 if (hba->max_rqes < num_elements_per_pg) 82 hba->max_rqes = num_elements_per_pg; 83 else if (hba->max_rqes % num_elements_per_pg) 84 hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & 85 ~(num_elements_per_pg - 1); 86 } 87 88 89 /** 90 * bnx2i_get_link_state - get network interface link state 91 * @hba: adapter instance pointer 92 * 93 * updates adapter structure flag based on netdev state 94 */ 95 static void bnx2i_get_link_state(struct bnx2i_hba *hba) 96 { 97 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) 98 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 99 else 100 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 101 } 102 103 104 /** 105 * bnx2i_iscsi_license_error - displays iscsi license related error message 106 * @hba: adapter instance pointer 107 * @error_code: error classification 108 * 109 * Puts out an error log when driver is unable to offload iscsi connection 110 * due to license restrictions 111 */ 112 static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) 113 { 114 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) 115 /* iSCSI offload not supported on this device */ 116 printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", 117 hba->netdev->name); 118 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) 119 /* iSCSI offload not supported on this LOM device */ 120 printk(KERN_ERR "bnx2i: LOM is not enable to " 121 "offload iSCSI connections, dev=%s\n", 122 hba->netdev->name); 123 set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); 124 } 125 126 127 /** 128 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification 129 * @ep: endpoint (transport indentifier) structure 130 * @action: action, ARM or DISARM. For now only ARM_CQE is used 131 * 132 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt 133 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is 134 * outstanding and on chip timer expires 135 */ 136 int bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) 137 { 138 struct bnx2i_5771x_cq_db *cq_db; 139 u16 cq_index; 140 u16 next_index = 0; 141 u32 num_active_cmds; 142 143 /* Coalesce CQ entries only on 10G devices */ 144 if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 145 return 0; 146 147 /* Do not update CQ DB multiple times before firmware writes 148 * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious 149 * interrupts and other unwanted results 150 */ 151 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 152 153 if (action != CNIC_ARM_CQE_FP) 154 if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) 155 return 0; 156 157 if (action == CNIC_ARM_CQE || action == CNIC_ARM_CQE_FP) { 158 num_active_cmds = atomic_read(&ep->num_active_cmds); 159 if (num_active_cmds <= event_coal_min) 160 next_index = 1; 161 else { 162 next_index = num_active_cmds >> ep->ec_shift; 163 if (next_index > num_active_cmds - event_coal_min) 164 next_index = num_active_cmds - event_coal_min; 165 } 166 if (!next_index) 167 next_index = 1; 168 cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; 169 if (cq_index > ep->qp.cqe_size * 2) 170 cq_index -= ep->qp.cqe_size * 2; 171 if (!cq_index) 172 cq_index = 1; 173 174 cq_db->sqn[0] = cq_index; 175 } 176 return next_index; 177 } 178 179 180 /** 181 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer 182 * @conn: iscsi connection on which RQ event occurred 183 * @ptr: driver buffer to which RQ buffer contents is to 184 * be copied 185 * @len: length of valid data inside RQ buf 186 * 187 * Copies RQ buffer contents from shared (DMA'able) memory region to 188 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and 189 * scsi sense info 190 */ 191 void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) 192 { 193 if (!bnx2i_conn->ep->qp.rqe_left) 194 return; 195 196 bnx2i_conn->ep->qp.rqe_left--; 197 memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); 198 if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { 199 bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; 200 bnx2i_conn->ep->qp.rq_cons_idx = 0; 201 } else { 202 bnx2i_conn->ep->qp.rq_cons_qe++; 203 bnx2i_conn->ep->qp.rq_cons_idx++; 204 } 205 } 206 207 208 static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) 209 { 210 struct bnx2i_5771x_dbell dbell; 211 u32 msg; 212 213 memset(&dbell, 0, sizeof(dbell)); 214 dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << 215 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); 216 msg = *((u32 *)&dbell); 217 /* TODO : get doorbell register mapping */ 218 writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); 219 } 220 221 222 /** 223 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell 224 * @conn: iscsi connection on which event to post 225 * @count: number of RQ buffer being posted to chip 226 * 227 * No need to ring hardware doorbell for 57710 family of devices 228 */ 229 void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) 230 { 231 struct bnx2i_5771x_sq_rq_db *rq_db; 232 u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); 233 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 234 235 ep->qp.rqe_left += count; 236 ep->qp.rq_prod_idx &= 0x7FFF; 237 ep->qp.rq_prod_idx += count; 238 239 if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { 240 ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; 241 if (!hi_bit) 242 ep->qp.rq_prod_idx |= 0x8000; 243 } else 244 ep->qp.rq_prod_idx |= hi_bit; 245 246 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 247 rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; 248 rq_db->prod_idx = ep->qp.rq_prod_idx; 249 /* no need to ring hardware doorbell for 57710 */ 250 } else { 251 writew(ep->qp.rq_prod_idx, 252 ep->qp.ctx_base + CNIC_RECV_DOORBELL); 253 } 254 mmiowb(); 255 } 256 257 258 /** 259 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine 260 * @conn: iscsi connection to which new SQ entries belong 261 * @count: number of SQ WQEs to post 262 * 263 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family 264 * of devices. For 5706/5708/5709 new SQ WQE count is written into the 265 * doorbell register 266 */ 267 static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) 268 { 269 struct bnx2i_5771x_sq_rq_db *sq_db; 270 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 271 272 atomic_inc(&ep->num_active_cmds); 273 wmb(); /* flush SQ WQE memory before the doorbell is rung */ 274 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 275 sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; 276 sq_db->prod_idx = ep->qp.sq_prod_idx; 277 bnx2i_ring_577xx_doorbell(bnx2i_conn); 278 } else 279 writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); 280 281 mmiowb(); /* flush posted PCI writes */ 282 } 283 284 285 /** 286 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters 287 * @conn: iscsi connection to which new SQ entries belong 288 * @count: number of SQ WQEs to post 289 * 290 * this routine will update SQ driver parameters and ring the doorbell 291 */ 292 static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, 293 int count) 294 { 295 int tmp_cnt; 296 297 if (count == 1) { 298 if (bnx2i_conn->ep->qp.sq_prod_qe == 299 bnx2i_conn->ep->qp.sq_last_qe) 300 bnx2i_conn->ep->qp.sq_prod_qe = 301 bnx2i_conn->ep->qp.sq_first_qe; 302 else 303 bnx2i_conn->ep->qp.sq_prod_qe++; 304 } else { 305 if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= 306 bnx2i_conn->ep->qp.sq_last_qe) 307 bnx2i_conn->ep->qp.sq_prod_qe += count; 308 else { 309 tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - 310 bnx2i_conn->ep->qp.sq_prod_qe; 311 bnx2i_conn->ep->qp.sq_prod_qe = 312 &bnx2i_conn->ep->qp.sq_first_qe[count - 313 (tmp_cnt + 1)]; 314 } 315 } 316 bnx2i_conn->ep->qp.sq_prod_idx += count; 317 /* Ring the doorbell */ 318 bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); 319 } 320 321 322 /** 323 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware 324 * @conn: iscsi connection 325 * @cmd: driver command structure which is requesting 326 * a WQE to sent to chip for further processing 327 * 328 * prepare and post an iSCSI Login request WQE to CNIC firmware 329 */ 330 int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, 331 struct iscsi_task *task) 332 { 333 struct bnx2i_cmd *bnx2i_cmd; 334 struct bnx2i_login_request *login_wqe; 335 struct iscsi_login_req *login_hdr; 336 u32 dword; 337 338 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 339 login_hdr = (struct iscsi_login_req *)task->hdr; 340 login_wqe = (struct bnx2i_login_request *) 341 bnx2i_conn->ep->qp.sq_prod_qe; 342 343 login_wqe->op_code = login_hdr->opcode; 344 login_wqe->op_attr = login_hdr->flags; 345 login_wqe->version_max = login_hdr->max_version; 346 login_wqe->version_min = login_hdr->min_version; 347 login_wqe->data_length = ntoh24(login_hdr->dlength); 348 login_wqe->isid_lo = *((u32 *) login_hdr->isid); 349 login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); 350 login_wqe->tsih = login_hdr->tsih; 351 login_wqe->itt = task->itt | 352 (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); 353 login_wqe->cid = login_hdr->cid; 354 355 login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); 356 login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 357 login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN; 358 359 login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; 360 login_wqe->resp_bd_list_addr_hi = 361 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); 362 363 dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | 364 (bnx2i_conn->gen_pdu.resp_buf_size << 365 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); 366 login_wqe->resp_buffer = dword; 367 login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; 368 login_wqe->bd_list_addr_hi = 369 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); 370 login_wqe->num_bds = 1; 371 login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 372 373 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 374 return 0; 375 } 376 377 /** 378 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware 379 * @conn: iscsi connection 380 * @mtask: driver command structure which is requesting 381 * a WQE to sent to chip for further processing 382 * 383 * prepare and post an iSCSI Login request WQE to CNIC firmware 384 */ 385 int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, 386 struct iscsi_task *mtask) 387 { 388 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 389 struct iscsi_tm *tmfabort_hdr; 390 struct scsi_cmnd *ref_sc; 391 struct iscsi_task *ctask; 392 struct bnx2i_cmd *bnx2i_cmd; 393 struct bnx2i_tmf_request *tmfabort_wqe; 394 u32 dword; 395 u32 scsi_lun[2]; 396 397 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; 398 tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; 399 tmfabort_wqe = (struct bnx2i_tmf_request *) 400 bnx2i_conn->ep->qp.sq_prod_qe; 401 402 tmfabort_wqe->op_code = tmfabort_hdr->opcode; 403 tmfabort_wqe->op_attr = tmfabort_hdr->flags; 404 405 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); 406 tmfabort_wqe->reserved2 = 0; 407 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); 408 409 switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { 410 case ISCSI_TM_FUNC_ABORT_TASK: 411 case ISCSI_TM_FUNC_TASK_REASSIGN: 412 ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); 413 if (!ctask || !ctask->sc) 414 /* 415 * the iscsi layer must have completed the cmd while 416 * was starting up. 417 * 418 * Note: In the case of a SCSI cmd timeout, the task's 419 * sc is still active; hence ctask->sc != 0 420 * In this case, the task must be aborted 421 */ 422 return 0; 423 424 ref_sc = ctask->sc; 425 if (ref_sc->sc_data_direction == DMA_TO_DEVICE) 426 dword = (ISCSI_TASK_TYPE_WRITE << 427 ISCSI_CMD_REQUEST_TYPE_SHIFT); 428 else 429 dword = (ISCSI_TASK_TYPE_READ << 430 ISCSI_CMD_REQUEST_TYPE_SHIFT); 431 tmfabort_wqe->ref_itt = (dword | 432 (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); 433 break; 434 default: 435 tmfabort_wqe->ref_itt = RESERVED_ITT; 436 } 437 memcpy(scsi_lun, &tmfabort_hdr->lun, sizeof(struct scsi_lun)); 438 tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); 439 tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); 440 441 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); 442 443 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 444 tmfabort_wqe->bd_list_addr_hi = (u32) 445 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 446 tmfabort_wqe->num_bds = 1; 447 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 448 449 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 450 return 0; 451 } 452 453 /** 454 * bnx2i_send_iscsi_text - post iSCSI text WQE to hardware 455 * @conn: iscsi connection 456 * @mtask: driver command structure which is requesting 457 * a WQE to sent to chip for further processing 458 * 459 * prepare and post an iSCSI Text request WQE to CNIC firmware 460 */ 461 int bnx2i_send_iscsi_text(struct bnx2i_conn *bnx2i_conn, 462 struct iscsi_task *mtask) 463 { 464 struct bnx2i_cmd *bnx2i_cmd; 465 struct bnx2i_text_request *text_wqe; 466 struct iscsi_text *text_hdr; 467 u32 dword; 468 469 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; 470 text_hdr = (struct iscsi_text *)mtask->hdr; 471 text_wqe = (struct bnx2i_text_request *) bnx2i_conn->ep->qp.sq_prod_qe; 472 473 memset(text_wqe, 0, sizeof(struct bnx2i_text_request)); 474 475 text_wqe->op_code = text_hdr->opcode; 476 text_wqe->op_attr = text_hdr->flags; 477 text_wqe->data_length = ntoh24(text_hdr->dlength); 478 text_wqe->itt = mtask->itt | 479 (ISCSI_TASK_TYPE_MPATH << ISCSI_TEXT_REQUEST_TYPE_SHIFT); 480 text_wqe->ttt = be32_to_cpu(text_hdr->ttt); 481 482 text_wqe->cmd_sn = be32_to_cpu(text_hdr->cmdsn); 483 484 text_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; 485 text_wqe->resp_bd_list_addr_hi = 486 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); 487 488 dword = ((1 << ISCSI_TEXT_REQUEST_NUM_RESP_BDS_SHIFT) | 489 (bnx2i_conn->gen_pdu.resp_buf_size << 490 ISCSI_TEXT_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); 491 text_wqe->resp_buffer = dword; 492 text_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; 493 text_wqe->bd_list_addr_hi = 494 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); 495 text_wqe->num_bds = 1; 496 text_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 497 498 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 499 return 0; 500 } 501 502 503 /** 504 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware 505 * @conn: iscsi connection 506 * @cmd: driver command structure which is requesting 507 * a WQE to sent to chip for further processing 508 * 509 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware 510 */ 511 int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, 512 struct bnx2i_cmd *cmd) 513 { 514 struct bnx2i_cmd_request *scsi_cmd_wqe; 515 516 scsi_cmd_wqe = (struct bnx2i_cmd_request *) 517 bnx2i_conn->ep->qp.sq_prod_qe; 518 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); 519 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 520 521 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 522 return 0; 523 } 524 525 /** 526 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware 527 * @conn: iscsi connection 528 * @cmd: driver command structure which is requesting 529 * a WQE to sent to chip for further processing 530 * @datap: payload buffer pointer 531 * @data_len: payload data length 532 * @unsol: indicated whether nopout pdu is unsolicited pdu or 533 * in response to target's NOPIN w/ TTT != FFFFFFFF 534 * 535 * prepare and post a nopout request WQE to CNIC firmware 536 */ 537 int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, 538 struct iscsi_task *task, 539 char *datap, int data_len, int unsol) 540 { 541 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 542 struct bnx2i_cmd *bnx2i_cmd; 543 struct bnx2i_nop_out_request *nopout_wqe; 544 struct iscsi_nopout *nopout_hdr; 545 546 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 547 nopout_hdr = (struct iscsi_nopout *)task->hdr; 548 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; 549 550 memset(nopout_wqe, 0x00, sizeof(struct bnx2i_nop_out_request)); 551 552 nopout_wqe->op_code = nopout_hdr->opcode; 553 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; 554 memcpy(nopout_wqe->lun, &nopout_hdr->lun, 8); 555 556 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 557 u32 tmp = nopout_wqe->lun[0]; 558 /* 57710 requires LUN field to be swapped */ 559 nopout_wqe->lun[0] = nopout_wqe->lun[1]; 560 nopout_wqe->lun[1] = tmp; 561 } 562 563 nopout_wqe->itt = ((u16)task->itt | 564 (ISCSI_TASK_TYPE_MPATH << 565 ISCSI_TMF_REQUEST_TYPE_SHIFT)); 566 nopout_wqe->ttt = be32_to_cpu(nopout_hdr->ttt); 567 nopout_wqe->flags = 0; 568 if (!unsol) 569 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 570 else if (nopout_hdr->itt == RESERVED_ITT) 571 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 572 573 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 574 nopout_wqe->data_length = data_len; 575 if (data_len) { 576 /* handle payload data, not required in first release */ 577 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); 578 } else { 579 nopout_wqe->bd_list_addr_lo = (u32) 580 bnx2i_conn->hba->mp_bd_dma; 581 nopout_wqe->bd_list_addr_hi = 582 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 583 nopout_wqe->num_bds = 1; 584 } 585 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 586 587 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 588 return 0; 589 } 590 591 592 /** 593 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware 594 * @conn: iscsi connection 595 * @cmd: driver command structure which is requesting 596 * a WQE to sent to chip for further processing 597 * 598 * prepare and post logout request WQE to CNIC firmware 599 */ 600 int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, 601 struct iscsi_task *task) 602 { 603 struct bnx2i_cmd *bnx2i_cmd; 604 struct bnx2i_logout_request *logout_wqe; 605 struct iscsi_logout *logout_hdr; 606 607 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 608 logout_hdr = (struct iscsi_logout *)task->hdr; 609 610 logout_wqe = (struct bnx2i_logout_request *) 611 bnx2i_conn->ep->qp.sq_prod_qe; 612 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); 613 614 logout_wqe->op_code = logout_hdr->opcode; 615 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 616 logout_wqe->op_attr = 617 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; 618 logout_wqe->itt = ((u16)task->itt | 619 (ISCSI_TASK_TYPE_MPATH << 620 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); 621 logout_wqe->data_length = 0; 622 logout_wqe->cid = 0; 623 624 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 625 logout_wqe->bd_list_addr_hi = (u32) 626 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 627 logout_wqe->num_bds = 1; 628 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 629 630 bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT; 631 632 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 633 return 0; 634 } 635 636 637 /** 638 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware 639 * @conn: iscsi connection which requires iscsi parameter update 640 * 641 * sends down iSCSI Conn Update request to move iSCSI conn to FFP 642 */ 643 void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) 644 { 645 struct bnx2i_conn *bnx2i_conn = conn->dd_data; 646 struct bnx2i_hba *hba = bnx2i_conn->hba; 647 struct kwqe *kwqe_arr[2]; 648 struct iscsi_kwqe_conn_update *update_wqe; 649 struct iscsi_kwqe_conn_update conn_update_kwqe; 650 651 update_wqe = &conn_update_kwqe; 652 653 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; 654 update_wqe->hdr.flags = 655 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 656 657 /* 5771x requires conn context id to be passed as is */ 658 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) 659 update_wqe->context_id = bnx2i_conn->ep->ep_cid; 660 else 661 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); 662 update_wqe->conn_flags = 0; 663 if (conn->hdrdgst_en) 664 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; 665 if (conn->datadgst_en) 666 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; 667 if (conn->session->initial_r2t_en) 668 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; 669 if (conn->session->imm_data_en) 670 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; 671 672 update_wqe->max_send_pdu_length = conn->max_xmit_dlength; 673 update_wqe->max_recv_pdu_length = conn->max_recv_dlength; 674 update_wqe->first_burst_length = conn->session->first_burst; 675 update_wqe->max_burst_length = conn->session->max_burst; 676 update_wqe->exp_stat_sn = conn->exp_statsn; 677 update_wqe->max_outstanding_r2ts = conn->session->max_r2t; 678 update_wqe->session_error_recovery_level = conn->session->erl; 679 iscsi_conn_printk(KERN_ALERT, conn, 680 "bnx2i: conn update - MBL 0x%x FBL 0x%x" 681 "MRDSL_I 0x%x MRDSL_T 0x%x \n", 682 update_wqe->max_burst_length, 683 update_wqe->first_burst_length, 684 update_wqe->max_recv_pdu_length, 685 update_wqe->max_send_pdu_length); 686 687 kwqe_arr[0] = (struct kwqe *) update_wqe; 688 if (hba->cnic && hba->cnic->submit_kwqes) 689 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 690 } 691 692 693 /** 694 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware 695 * @data: endpoint (transport handle) structure pointer 696 * 697 * routine to handle connection offload/destroy request timeout 698 */ 699 void bnx2i_ep_ofld_timer(unsigned long data) 700 { 701 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; 702 703 if (ep->state == EP_STATE_OFLD_START) { 704 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); 705 ep->state = EP_STATE_OFLD_FAILED; 706 } else if (ep->state == EP_STATE_DISCONN_START) { 707 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); 708 ep->state = EP_STATE_DISCONN_TIMEDOUT; 709 } else if (ep->state == EP_STATE_CLEANUP_START) { 710 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); 711 ep->state = EP_STATE_CLEANUP_FAILED; 712 } 713 714 wake_up_interruptible(&ep->ofld_wait); 715 } 716 717 718 static int bnx2i_power_of2(u32 val) 719 { 720 u32 power = 0; 721 if (val & (val - 1)) 722 return power; 723 val--; 724 while (val) { 725 val = val >> 1; 726 power++; 727 } 728 return power; 729 } 730 731 732 /** 733 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request 734 * @hba: adapter structure pointer 735 * @cmd: driver command structure which is requesting 736 * a WQE to sent to chip for further processing 737 * 738 * prepares and posts CONN_OFLD_REQ1/2 KWQE 739 */ 740 void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) 741 { 742 struct bnx2i_cleanup_request *cmd_cleanup; 743 744 cmd_cleanup = 745 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; 746 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); 747 748 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; 749 cmd_cleanup->itt = cmd->req.itt; 750 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ 751 752 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); 753 } 754 755 756 /** 757 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process 758 * @hba: adapter structure pointer 759 * @ep: endpoint (transport indentifier) structure 760 * 761 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate 762 * iscsi connection context clean-up process 763 */ 764 int bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 765 { 766 struct kwqe *kwqe_arr[2]; 767 struct iscsi_kwqe_conn_destroy conn_cleanup; 768 int rc = -EINVAL; 769 770 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); 771 772 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; 773 conn_cleanup.hdr.flags = 774 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 775 /* 5771x requires conn context id to be passed as is */ 776 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 777 conn_cleanup.context_id = ep->ep_cid; 778 else 779 conn_cleanup.context_id = (ep->ep_cid >> 7); 780 781 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; 782 783 kwqe_arr[0] = (struct kwqe *) &conn_cleanup; 784 if (hba->cnic && hba->cnic->submit_kwqes) 785 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 786 787 return rc; 788 } 789 790 791 /** 792 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process 793 * @hba: adapter structure pointer 794 * @ep: endpoint (transport indentifier) structure 795 * 796 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 797 */ 798 static int bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, 799 struct bnx2i_endpoint *ep) 800 { 801 struct kwqe *kwqe_arr[2]; 802 struct iscsi_kwqe_conn_offload1 ofld_req1; 803 struct iscsi_kwqe_conn_offload2 ofld_req2; 804 dma_addr_t dma_addr; 805 int num_kwqes = 2; 806 u32 *ptbl; 807 int rc = -EINVAL; 808 809 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 810 ofld_req1.hdr.flags = 811 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 812 813 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 814 815 dma_addr = ep->qp.sq_pgtbl_phys; 816 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 817 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 818 819 dma_addr = ep->qp.cq_pgtbl_phys; 820 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 821 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 822 823 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 824 ofld_req2.hdr.flags = 825 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 826 827 dma_addr = ep->qp.rq_pgtbl_phys; 828 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 829 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 830 831 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 832 833 ofld_req2.sq_first_pte.hi = *ptbl++; 834 ofld_req2.sq_first_pte.lo = *ptbl; 835 836 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 837 ofld_req2.cq_first_pte.hi = *ptbl++; 838 ofld_req2.cq_first_pte.lo = *ptbl; 839 840 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 841 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 842 ofld_req2.num_additional_wqes = 0; 843 844 if (hba->cnic && hba->cnic->submit_kwqes) 845 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 846 847 return rc; 848 } 849 850 851 /** 852 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation 853 * @hba: adapter structure pointer 854 * @ep: endpoint (transport indentifier) structure 855 * 856 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 857 */ 858 static int bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, 859 struct bnx2i_endpoint *ep) 860 { 861 struct kwqe *kwqe_arr[5]; 862 struct iscsi_kwqe_conn_offload1 ofld_req1; 863 struct iscsi_kwqe_conn_offload2 ofld_req2; 864 struct iscsi_kwqe_conn_offload3 ofld_req3[1]; 865 dma_addr_t dma_addr; 866 int num_kwqes = 2; 867 u32 *ptbl; 868 int rc = -EINVAL; 869 870 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 871 ofld_req1.hdr.flags = 872 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 873 874 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 875 876 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; 877 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 878 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 879 880 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; 881 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 882 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 883 884 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 885 ofld_req2.hdr.flags = 886 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 887 888 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; 889 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 890 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 891 892 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 893 ofld_req2.sq_first_pte.hi = *ptbl++; 894 ofld_req2.sq_first_pte.lo = *ptbl; 895 896 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 897 ofld_req2.cq_first_pte.hi = *ptbl++; 898 ofld_req2.cq_first_pte.lo = *ptbl; 899 900 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 901 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 902 903 ofld_req2.num_additional_wqes = 1; 904 memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); 905 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 906 ofld_req3[0].qp_first_pte[0].hi = *ptbl++; 907 ofld_req3[0].qp_first_pte[0].lo = *ptbl; 908 909 kwqe_arr[2] = (struct kwqe *) ofld_req3; 910 /* need if we decide to go with multiple KCQE's per conn */ 911 num_kwqes += 1; 912 913 if (hba->cnic && hba->cnic->submit_kwqes) 914 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 915 916 return rc; 917 } 918 919 /** 920 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process 921 * 922 * @hba: adapter structure pointer 923 * @ep: endpoint (transport indentifier) structure 924 * 925 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE 926 */ 927 int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 928 { 929 int rc; 930 931 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) 932 rc = bnx2i_5771x_send_conn_ofld_req(hba, ep); 933 else 934 rc = bnx2i_570x_send_conn_ofld_req(hba, ep); 935 936 return rc; 937 } 938 939 940 /** 941 * setup_qp_page_tables - iscsi QP page table setup function 942 * @ep: endpoint (transport indentifier) structure 943 * 944 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires 945 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires 946 * PT in little endian format 947 */ 948 static void setup_qp_page_tables(struct bnx2i_endpoint *ep) 949 { 950 int num_pages; 951 u32 *ptbl; 952 dma_addr_t page; 953 int cnic_dev_10g; 954 955 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 956 cnic_dev_10g = 1; 957 else 958 cnic_dev_10g = 0; 959 960 /* SQ page table */ 961 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); 962 num_pages = ep->qp.sq_mem_size / PAGE_SIZE; 963 page = ep->qp.sq_phys; 964 965 if (cnic_dev_10g) 966 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 967 else 968 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 969 while (num_pages--) { 970 if (cnic_dev_10g) { 971 /* PTE is written in little endian format for 57710 */ 972 *ptbl = (u32) page; 973 ptbl++; 974 *ptbl = (u32) ((u64) page >> 32); 975 ptbl++; 976 page += PAGE_SIZE; 977 } else { 978 /* PTE is written in big endian format for 979 * 5706/5708/5709 devices */ 980 *ptbl = (u32) ((u64) page >> 32); 981 ptbl++; 982 *ptbl = (u32) page; 983 ptbl++; 984 page += PAGE_SIZE; 985 } 986 } 987 988 /* RQ page table */ 989 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); 990 num_pages = ep->qp.rq_mem_size / PAGE_SIZE; 991 page = ep->qp.rq_phys; 992 993 if (cnic_dev_10g) 994 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 995 else 996 ptbl = (u32 *) ep->qp.rq_pgtbl_virt; 997 while (num_pages--) { 998 if (cnic_dev_10g) { 999 /* PTE is written in little endian format for 57710 */ 1000 *ptbl = (u32) page; 1001 ptbl++; 1002 *ptbl = (u32) ((u64) page >> 32); 1003 ptbl++; 1004 page += PAGE_SIZE; 1005 } else { 1006 /* PTE is written in big endian format for 1007 * 5706/5708/5709 devices */ 1008 *ptbl = (u32) ((u64) page >> 32); 1009 ptbl++; 1010 *ptbl = (u32) page; 1011 ptbl++; 1012 page += PAGE_SIZE; 1013 } 1014 } 1015 1016 /* CQ page table */ 1017 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); 1018 num_pages = ep->qp.cq_mem_size / PAGE_SIZE; 1019 page = ep->qp.cq_phys; 1020 1021 if (cnic_dev_10g) 1022 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 1023 else 1024 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 1025 while (num_pages--) { 1026 if (cnic_dev_10g) { 1027 /* PTE is written in little endian format for 57710 */ 1028 *ptbl = (u32) page; 1029 ptbl++; 1030 *ptbl = (u32) ((u64) page >> 32); 1031 ptbl++; 1032 page += PAGE_SIZE; 1033 } else { 1034 /* PTE is written in big endian format for 1035 * 5706/5708/5709 devices */ 1036 *ptbl = (u32) ((u64) page >> 32); 1037 ptbl++; 1038 *ptbl = (u32) page; 1039 ptbl++; 1040 page += PAGE_SIZE; 1041 } 1042 } 1043 } 1044 1045 1046 /** 1047 * bnx2i_alloc_qp_resc - allocates required resources for QP. 1048 * @hba: adapter structure pointer 1049 * @ep: endpoint (transport indentifier) structure 1050 * 1051 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able 1052 * memory for SQ/RQ/CQ and page tables. EP structure elements such 1053 * as producer/consumer indexes/pointers, queue sizes and page table 1054 * contents are setup 1055 */ 1056 int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1057 { 1058 struct bnx2i_5771x_cq_db *cq_db; 1059 1060 ep->hba = hba; 1061 ep->conn = NULL; 1062 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; 1063 1064 /* Allocate page table memory for SQ which is page aligned */ 1065 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; 1066 ep->qp.sq_mem_size = 1067 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1068 ep->qp.sq_pgtbl_size = 1069 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); 1070 ep->qp.sq_pgtbl_size = 1071 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1072 1073 ep->qp.sq_pgtbl_virt = 1074 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1075 &ep->qp.sq_pgtbl_phys, GFP_KERNEL); 1076 if (!ep->qp.sq_pgtbl_virt) { 1077 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", 1078 ep->qp.sq_pgtbl_size); 1079 goto mem_alloc_err; 1080 } 1081 1082 /* Allocate memory area for actual SQ element */ 1083 ep->qp.sq_virt = 1084 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1085 &ep->qp.sq_phys, GFP_KERNEL); 1086 if (!ep->qp.sq_virt) { 1087 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", 1088 ep->qp.sq_mem_size); 1089 goto mem_alloc_err; 1090 } 1091 1092 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); 1093 ep->qp.sq_first_qe = ep->qp.sq_virt; 1094 ep->qp.sq_prod_qe = ep->qp.sq_first_qe; 1095 ep->qp.sq_cons_qe = ep->qp.sq_first_qe; 1096 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; 1097 ep->qp.sq_prod_idx = 0; 1098 ep->qp.sq_cons_idx = 0; 1099 ep->qp.sqe_left = hba->max_sqes; 1100 1101 /* Allocate page table memory for CQ which is page aligned */ 1102 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; 1103 ep->qp.cq_mem_size = 1104 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1105 ep->qp.cq_pgtbl_size = 1106 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); 1107 ep->qp.cq_pgtbl_size = 1108 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1109 1110 ep->qp.cq_pgtbl_virt = 1111 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1112 &ep->qp.cq_pgtbl_phys, GFP_KERNEL); 1113 if (!ep->qp.cq_pgtbl_virt) { 1114 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", 1115 ep->qp.cq_pgtbl_size); 1116 goto mem_alloc_err; 1117 } 1118 1119 /* Allocate memory area for actual CQ element */ 1120 ep->qp.cq_virt = 1121 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1122 &ep->qp.cq_phys, GFP_KERNEL); 1123 if (!ep->qp.cq_virt) { 1124 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", 1125 ep->qp.cq_mem_size); 1126 goto mem_alloc_err; 1127 } 1128 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); 1129 1130 ep->qp.cq_first_qe = ep->qp.cq_virt; 1131 ep->qp.cq_prod_qe = ep->qp.cq_first_qe; 1132 ep->qp.cq_cons_qe = ep->qp.cq_first_qe; 1133 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; 1134 ep->qp.cq_prod_idx = 0; 1135 ep->qp.cq_cons_idx = 0; 1136 ep->qp.cqe_left = hba->max_cqes; 1137 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1138 ep->qp.cqe_size = hba->max_cqes; 1139 1140 /* Invalidate all EQ CQE index, req only for 57710 */ 1141 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 1142 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); 1143 1144 /* Allocate page table memory for RQ which is page aligned */ 1145 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; 1146 ep->qp.rq_mem_size = 1147 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1148 ep->qp.rq_pgtbl_size = 1149 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); 1150 ep->qp.rq_pgtbl_size = 1151 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1152 1153 ep->qp.rq_pgtbl_virt = 1154 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1155 &ep->qp.rq_pgtbl_phys, GFP_KERNEL); 1156 if (!ep->qp.rq_pgtbl_virt) { 1157 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", 1158 ep->qp.rq_pgtbl_size); 1159 goto mem_alloc_err; 1160 } 1161 1162 /* Allocate memory area for actual RQ element */ 1163 ep->qp.rq_virt = 1164 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1165 &ep->qp.rq_phys, GFP_KERNEL); 1166 if (!ep->qp.rq_virt) { 1167 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", 1168 ep->qp.rq_mem_size); 1169 goto mem_alloc_err; 1170 } 1171 1172 ep->qp.rq_first_qe = ep->qp.rq_virt; 1173 ep->qp.rq_prod_qe = ep->qp.rq_first_qe; 1174 ep->qp.rq_cons_qe = ep->qp.rq_first_qe; 1175 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; 1176 ep->qp.rq_prod_idx = 0x8000; 1177 ep->qp.rq_cons_idx = 0; 1178 ep->qp.rqe_left = hba->max_rqes; 1179 1180 setup_qp_page_tables(ep); 1181 1182 return 0; 1183 1184 mem_alloc_err: 1185 bnx2i_free_qp_resc(hba, ep); 1186 return -ENOMEM; 1187 } 1188 1189 1190 1191 /** 1192 * bnx2i_free_qp_resc - free memory resources held by QP 1193 * @hba: adapter structure pointer 1194 * @ep: endpoint (transport indentifier) structure 1195 * 1196 * Free QP resources - SQ/RQ/CQ memory and page tables. 1197 */ 1198 void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1199 { 1200 if (ep->qp.ctx_base) { 1201 iounmap(ep->qp.ctx_base); 1202 ep->qp.ctx_base = NULL; 1203 } 1204 /* Free SQ mem */ 1205 if (ep->qp.sq_pgtbl_virt) { 1206 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1207 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); 1208 ep->qp.sq_pgtbl_virt = NULL; 1209 ep->qp.sq_pgtbl_phys = 0; 1210 } 1211 if (ep->qp.sq_virt) { 1212 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1213 ep->qp.sq_virt, ep->qp.sq_phys); 1214 ep->qp.sq_virt = NULL; 1215 ep->qp.sq_phys = 0; 1216 } 1217 1218 /* Free RQ mem */ 1219 if (ep->qp.rq_pgtbl_virt) { 1220 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1221 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); 1222 ep->qp.rq_pgtbl_virt = NULL; 1223 ep->qp.rq_pgtbl_phys = 0; 1224 } 1225 if (ep->qp.rq_virt) { 1226 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1227 ep->qp.rq_virt, ep->qp.rq_phys); 1228 ep->qp.rq_virt = NULL; 1229 ep->qp.rq_phys = 0; 1230 } 1231 1232 /* Free CQ mem */ 1233 if (ep->qp.cq_pgtbl_virt) { 1234 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1235 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); 1236 ep->qp.cq_pgtbl_virt = NULL; 1237 ep->qp.cq_pgtbl_phys = 0; 1238 } 1239 if (ep->qp.cq_virt) { 1240 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1241 ep->qp.cq_virt, ep->qp.cq_phys); 1242 ep->qp.cq_virt = NULL; 1243 ep->qp.cq_phys = 0; 1244 } 1245 } 1246 1247 1248 /** 1249 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w 1250 * @hba: adapter structure pointer 1251 * 1252 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w 1253 * This results in iSCSi support validation and on-chip context manager 1254 * initialization. Firmware completes this handshake with a CQE carrying 1255 * the result of iscsi support validation. Parameter carried by 1256 * iscsi init request determines the number of offloaded connection and 1257 * tolerance level for iscsi protocol violation this hba/chip can support 1258 */ 1259 int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) 1260 { 1261 struct kwqe *kwqe_arr[3]; 1262 struct iscsi_kwqe_init1 iscsi_init; 1263 struct iscsi_kwqe_init2 iscsi_init2; 1264 int rc = 0; 1265 u64 mask64; 1266 1267 bnx2i_adjust_qp_size(hba); 1268 1269 iscsi_init.flags = 1270 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; 1271 if (en_tcp_dack) 1272 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; 1273 iscsi_init.reserved0 = 0; 1274 iscsi_init.num_cqs = 1; 1275 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; 1276 iscsi_init.hdr.flags = 1277 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1278 1279 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; 1280 iscsi_init.dummy_buffer_addr_hi = 1281 (u32) ((u64) hba->dummy_buf_dma >> 32); 1282 1283 hba->num_ccell = hba->max_sqes >> 1; 1284 hba->ctx_ccell_tasks = 1285 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); 1286 iscsi_init.num_ccells_per_conn = hba->num_ccell; 1287 iscsi_init.num_tasks_per_conn = hba->max_sqes; 1288 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 1289 iscsi_init.sq_num_wqes = hba->max_sqes; 1290 iscsi_init.cq_log_wqes_per_page = 1291 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); 1292 iscsi_init.cq_num_wqes = hba->max_cqes; 1293 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + 1294 (PAGE_SIZE - 1)) / PAGE_SIZE; 1295 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + 1296 (PAGE_SIZE - 1)) / PAGE_SIZE; 1297 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; 1298 iscsi_init.rq_num_wqes = hba->max_rqes; 1299 1300 1301 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; 1302 iscsi_init2.hdr.flags = 1303 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1304 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; 1305 mask64 = 0x0ULL; 1306 mask64 |= ( 1307 /* CISCO MDS */ 1308 (1UL << 1309 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | 1310 /* HP MSA1510i */ 1311 (1UL << 1312 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | 1313 /* EMC */ 1314 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); 1315 if (error_mask1) { 1316 iscsi_init2.error_bit_map[0] = error_mask1; 1317 mask64 &= (u32)(~mask64); 1318 mask64 |= error_mask1; 1319 } else 1320 iscsi_init2.error_bit_map[0] = (u32) mask64; 1321 1322 if (error_mask2) { 1323 iscsi_init2.error_bit_map[1] = error_mask2; 1324 mask64 &= 0xffffffff; 1325 mask64 |= ((u64)error_mask2 << 32); 1326 } else 1327 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); 1328 1329 iscsi_error_mask = mask64; 1330 1331 kwqe_arr[0] = (struct kwqe *) &iscsi_init; 1332 kwqe_arr[1] = (struct kwqe *) &iscsi_init2; 1333 1334 if (hba->cnic && hba->cnic->submit_kwqes) 1335 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); 1336 return rc; 1337 } 1338 1339 1340 /** 1341 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. 1342 * @session: iscsi session 1343 * @bnx2i_conn: bnx2i connection 1344 * @cqe: pointer to newly DMA'ed CQE entry for processing 1345 * 1346 * process SCSI CMD Response CQE & complete the request to SCSI-ML 1347 */ 1348 int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, 1349 struct bnx2i_conn *bnx2i_conn, 1350 struct cqe *cqe) 1351 { 1352 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1353 struct bnx2i_cmd_response *resp_cqe; 1354 struct bnx2i_cmd *bnx2i_cmd; 1355 struct iscsi_task *task; 1356 struct iscsi_scsi_rsp *hdr; 1357 u32 datalen = 0; 1358 1359 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1360 spin_lock_bh(&session->lock); 1361 task = iscsi_itt_to_task(conn, 1362 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); 1363 if (!task) 1364 goto fail; 1365 1366 bnx2i_cmd = task->dd_data; 1367 1368 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { 1369 conn->datain_pdus_cnt += 1370 resp_cqe->task_stat.read_stat.num_data_outs; 1371 conn->rxdata_octets += 1372 bnx2i_cmd->req.total_data_transfer_length; 1373 } else { 1374 conn->dataout_pdus_cnt += 1375 resp_cqe->task_stat.read_stat.num_data_outs; 1376 conn->r2t_pdus_cnt += 1377 resp_cqe->task_stat.read_stat.num_r2ts; 1378 conn->txdata_octets += 1379 bnx2i_cmd->req.total_data_transfer_length; 1380 } 1381 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); 1382 1383 hdr = (struct iscsi_scsi_rsp *)task->hdr; 1384 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1385 hdr->opcode = resp_cqe->op_code; 1386 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); 1387 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); 1388 hdr->response = resp_cqe->response; 1389 hdr->cmd_status = resp_cqe->status; 1390 hdr->flags = resp_cqe->response_flags; 1391 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); 1392 1393 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) 1394 goto done; 1395 1396 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { 1397 datalen = resp_cqe->data_length; 1398 if (datalen < 2) 1399 goto done; 1400 1401 if (datalen > BNX2I_RQ_WQE_SIZE) { 1402 iscsi_conn_printk(KERN_ERR, conn, 1403 "sense data len %d > RQ sz\n", 1404 datalen); 1405 datalen = BNX2I_RQ_WQE_SIZE; 1406 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { 1407 iscsi_conn_printk(KERN_ERR, conn, 1408 "sense data len %d > conn data\n", 1409 datalen); 1410 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; 1411 } 1412 1413 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); 1414 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); 1415 } 1416 1417 done: 1418 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 1419 conn->data, datalen); 1420 fail: 1421 spin_unlock_bh(&session->lock); 1422 return 0; 1423 } 1424 1425 1426 /** 1427 * bnx2i_process_login_resp - this function handles iscsi login response 1428 * @session: iscsi session pointer 1429 * @bnx2i_conn: iscsi connection pointer 1430 * @cqe: pointer to newly DMA'ed CQE entry for processing 1431 * 1432 * process Login Response CQE & complete it to open-iscsi user daemon 1433 */ 1434 static int bnx2i_process_login_resp(struct iscsi_session *session, 1435 struct bnx2i_conn *bnx2i_conn, 1436 struct cqe *cqe) 1437 { 1438 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1439 struct iscsi_task *task; 1440 struct bnx2i_login_response *login; 1441 struct iscsi_login_rsp *resp_hdr; 1442 int pld_len; 1443 int pad_len; 1444 1445 login = (struct bnx2i_login_response *) cqe; 1446 spin_lock(&session->lock); 1447 task = iscsi_itt_to_task(conn, 1448 login->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1449 if (!task) 1450 goto done; 1451 1452 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1453 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1454 resp_hdr->opcode = login->op_code; 1455 resp_hdr->flags = login->response_flags; 1456 resp_hdr->max_version = login->version_max; 1457 resp_hdr->active_version = login->version_active; 1458 resp_hdr->hlength = 0; 1459 1460 hton24(resp_hdr->dlength, login->data_length); 1461 memcpy(resp_hdr->isid, &login->isid_lo, 6); 1462 resp_hdr->tsih = cpu_to_be16(login->tsih); 1463 resp_hdr->itt = task->hdr->itt; 1464 resp_hdr->statsn = cpu_to_be32(login->stat_sn); 1465 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); 1466 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); 1467 resp_hdr->status_class = login->status_class; 1468 resp_hdr->status_detail = login->status_detail; 1469 pld_len = login->data_length; 1470 bnx2i_conn->gen_pdu.resp_wr_ptr = 1471 bnx2i_conn->gen_pdu.resp_buf + pld_len; 1472 1473 pad_len = 0; 1474 if (pld_len & 0x3) 1475 pad_len = 4 - (pld_len % 4); 1476 1477 if (pad_len) { 1478 int i = 0; 1479 for (i = 0; i < pad_len; i++) { 1480 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1481 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1482 } 1483 } 1484 1485 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1486 bnx2i_conn->gen_pdu.resp_buf, 1487 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); 1488 done: 1489 spin_unlock(&session->lock); 1490 return 0; 1491 } 1492 1493 1494 /** 1495 * bnx2i_process_text_resp - this function handles iscsi text response 1496 * @session: iscsi session pointer 1497 * @bnx2i_conn: iscsi connection pointer 1498 * @cqe: pointer to newly DMA'ed CQE entry for processing 1499 * 1500 * process iSCSI Text Response CQE& complete it to open-iscsi user daemon 1501 */ 1502 static int bnx2i_process_text_resp(struct iscsi_session *session, 1503 struct bnx2i_conn *bnx2i_conn, 1504 struct cqe *cqe) 1505 { 1506 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1507 struct iscsi_task *task; 1508 struct bnx2i_text_response *text; 1509 struct iscsi_text_rsp *resp_hdr; 1510 int pld_len; 1511 int pad_len; 1512 1513 text = (struct bnx2i_text_response *) cqe; 1514 spin_lock(&session->lock); 1515 task = iscsi_itt_to_task(conn, text->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1516 if (!task) 1517 goto done; 1518 1519 resp_hdr = (struct iscsi_text_rsp *)&bnx2i_conn->gen_pdu.resp_hdr; 1520 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1521 resp_hdr->opcode = text->op_code; 1522 resp_hdr->flags = text->response_flags; 1523 resp_hdr->hlength = 0; 1524 1525 hton24(resp_hdr->dlength, text->data_length); 1526 resp_hdr->itt = task->hdr->itt; 1527 resp_hdr->ttt = cpu_to_be32(text->ttt); 1528 resp_hdr->statsn = task->hdr->exp_statsn; 1529 resp_hdr->exp_cmdsn = cpu_to_be32(text->exp_cmd_sn); 1530 resp_hdr->max_cmdsn = cpu_to_be32(text->max_cmd_sn); 1531 pld_len = text->data_length; 1532 bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf + 1533 pld_len; 1534 pad_len = 0; 1535 if (pld_len & 0x3) 1536 pad_len = 4 - (pld_len % 4); 1537 1538 if (pad_len) { 1539 int i = 0; 1540 for (i = 0; i < pad_len; i++) { 1541 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1542 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1543 } 1544 } 1545 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1546 bnx2i_conn->gen_pdu.resp_buf, 1547 bnx2i_conn->gen_pdu.resp_wr_ptr - 1548 bnx2i_conn->gen_pdu.resp_buf); 1549 done: 1550 spin_unlock(&session->lock); 1551 return 0; 1552 } 1553 1554 1555 /** 1556 * bnx2i_process_tmf_resp - this function handles iscsi TMF response 1557 * @session: iscsi session pointer 1558 * @bnx2i_conn: iscsi connection pointer 1559 * @cqe: pointer to newly DMA'ed CQE entry for processing 1560 * 1561 * process iSCSI TMF Response CQE and wake up the driver eh thread. 1562 */ 1563 static int bnx2i_process_tmf_resp(struct iscsi_session *session, 1564 struct bnx2i_conn *bnx2i_conn, 1565 struct cqe *cqe) 1566 { 1567 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1568 struct iscsi_task *task; 1569 struct bnx2i_tmf_response *tmf_cqe; 1570 struct iscsi_tm_rsp *resp_hdr; 1571 1572 tmf_cqe = (struct bnx2i_tmf_response *)cqe; 1573 spin_lock(&session->lock); 1574 task = iscsi_itt_to_task(conn, 1575 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); 1576 if (!task) 1577 goto done; 1578 1579 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1580 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1581 resp_hdr->opcode = tmf_cqe->op_code; 1582 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); 1583 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); 1584 resp_hdr->itt = task->hdr->itt; 1585 resp_hdr->response = tmf_cqe->response; 1586 1587 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1588 done: 1589 spin_unlock(&session->lock); 1590 return 0; 1591 } 1592 1593 /** 1594 * bnx2i_process_logout_resp - this function handles iscsi logout response 1595 * @session: iscsi session pointer 1596 * @bnx2i_conn: iscsi connection pointer 1597 * @cqe: pointer to newly DMA'ed CQE entry for processing 1598 * 1599 * process iSCSI Logout Response CQE & make function call to 1600 * notify the user daemon. 1601 */ 1602 static int bnx2i_process_logout_resp(struct iscsi_session *session, 1603 struct bnx2i_conn *bnx2i_conn, 1604 struct cqe *cqe) 1605 { 1606 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1607 struct iscsi_task *task; 1608 struct bnx2i_logout_response *logout; 1609 struct iscsi_logout_rsp *resp_hdr; 1610 1611 logout = (struct bnx2i_logout_response *) cqe; 1612 spin_lock(&session->lock); 1613 task = iscsi_itt_to_task(conn, 1614 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); 1615 if (!task) 1616 goto done; 1617 1618 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1619 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1620 resp_hdr->opcode = logout->op_code; 1621 resp_hdr->flags = logout->response; 1622 resp_hdr->hlength = 0; 1623 1624 resp_hdr->itt = task->hdr->itt; 1625 resp_hdr->statsn = task->hdr->exp_statsn; 1626 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); 1627 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); 1628 1629 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); 1630 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); 1631 1632 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1633 1634 bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD; 1635 done: 1636 spin_unlock(&session->lock); 1637 return 0; 1638 } 1639 1640 /** 1641 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE 1642 * @session: iscsi session pointer 1643 * @bnx2i_conn: iscsi connection pointer 1644 * @cqe: pointer to newly DMA'ed CQE entry for processing 1645 * 1646 * process iSCSI NOPIN local completion CQE, frees IIT and command structures 1647 */ 1648 static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, 1649 struct bnx2i_conn *bnx2i_conn, 1650 struct cqe *cqe) 1651 { 1652 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1653 struct bnx2i_nop_in_msg *nop_in; 1654 struct iscsi_task *task; 1655 1656 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1657 spin_lock(&session->lock); 1658 task = iscsi_itt_to_task(conn, 1659 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); 1660 if (task) 1661 __iscsi_put_task(task); 1662 spin_unlock(&session->lock); 1663 } 1664 1665 /** 1666 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd 1667 * @conn: iscsi connection 1668 * 1669 * Firmware advances RQ producer index for every unsolicited PDU even if 1670 * payload data length is '0'. This function makes corresponding 1671 * adjustments on the driver side to match this f/w behavior 1672 */ 1673 static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) 1674 { 1675 char dummy_rq_data[2]; 1676 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); 1677 bnx2i_put_rq_buf(bnx2i_conn, 1); 1678 } 1679 1680 1681 /** 1682 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE 1683 * @session: iscsi session pointer 1684 * @bnx2i_conn: iscsi connection pointer 1685 * @cqe: pointer to newly DMA'ed CQE entry for processing 1686 * 1687 * process iSCSI target's proactive iSCSI NOPIN request 1688 */ 1689 static int bnx2i_process_nopin_mesg(struct iscsi_session *session, 1690 struct bnx2i_conn *bnx2i_conn, 1691 struct cqe *cqe) 1692 { 1693 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1694 struct iscsi_task *task; 1695 struct bnx2i_nop_in_msg *nop_in; 1696 struct iscsi_nopin *hdr; 1697 int tgt_async_nop = 0; 1698 1699 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1700 1701 spin_lock(&session->lock); 1702 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; 1703 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1704 hdr->opcode = nop_in->op_code; 1705 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); 1706 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); 1707 hdr->ttt = cpu_to_be32(nop_in->ttt); 1708 1709 if (nop_in->itt == (u16) RESERVED_ITT) { 1710 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1711 hdr->itt = RESERVED_ITT; 1712 tgt_async_nop = 1; 1713 goto done; 1714 } 1715 1716 /* this is a response to one of our nop-outs */ 1717 task = iscsi_itt_to_task(conn, 1718 (itt_t) (nop_in->itt & ISCSI_NOP_IN_MSG_INDEX)); 1719 if (task) { 1720 hdr->flags = ISCSI_FLAG_CMD_FINAL; 1721 hdr->itt = task->hdr->itt; 1722 hdr->ttt = cpu_to_be32(nop_in->ttt); 1723 memcpy(&hdr->lun, nop_in->lun, 8); 1724 } 1725 done: 1726 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); 1727 spin_unlock(&session->lock); 1728 1729 return tgt_async_nop; 1730 } 1731 1732 1733 /** 1734 * bnx2i_process_async_mesg - this function handles iscsi async message 1735 * @session: iscsi session pointer 1736 * @bnx2i_conn: iscsi connection pointer 1737 * @cqe: pointer to newly DMA'ed CQE entry for processing 1738 * 1739 * process iSCSI ASYNC Message 1740 */ 1741 static void bnx2i_process_async_mesg(struct iscsi_session *session, 1742 struct bnx2i_conn *bnx2i_conn, 1743 struct cqe *cqe) 1744 { 1745 struct bnx2i_async_msg *async_cqe; 1746 struct iscsi_async *resp_hdr; 1747 u8 async_event; 1748 1749 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1750 1751 async_cqe = (struct bnx2i_async_msg *)cqe; 1752 async_event = async_cqe->async_event; 1753 1754 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { 1755 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, 1756 "async: scsi events not supported\n"); 1757 return; 1758 } 1759 1760 spin_lock(&session->lock); 1761 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; 1762 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1763 resp_hdr->opcode = async_cqe->op_code; 1764 resp_hdr->flags = 0x80; 1765 1766 memcpy(&resp_hdr->lun, async_cqe->lun, 8); 1767 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); 1768 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); 1769 1770 resp_hdr->async_event = async_cqe->async_event; 1771 resp_hdr->async_vcode = async_cqe->async_vcode; 1772 1773 resp_hdr->param1 = cpu_to_be16(async_cqe->param1); 1774 resp_hdr->param2 = cpu_to_be16(async_cqe->param2); 1775 resp_hdr->param3 = cpu_to_be16(async_cqe->param3); 1776 1777 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, 1778 (struct iscsi_hdr *)resp_hdr, NULL, 0); 1779 spin_unlock(&session->lock); 1780 } 1781 1782 1783 /** 1784 * bnx2i_process_reject_mesg - process iscsi reject pdu 1785 * @session: iscsi session pointer 1786 * @bnx2i_conn: iscsi connection pointer 1787 * @cqe: pointer to newly DMA'ed CQE entry for processing 1788 * 1789 * process iSCSI REJECT message 1790 */ 1791 static void bnx2i_process_reject_mesg(struct iscsi_session *session, 1792 struct bnx2i_conn *bnx2i_conn, 1793 struct cqe *cqe) 1794 { 1795 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1796 struct bnx2i_reject_msg *reject; 1797 struct iscsi_reject *hdr; 1798 1799 reject = (struct bnx2i_reject_msg *) cqe; 1800 if (reject->data_length) { 1801 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); 1802 bnx2i_put_rq_buf(bnx2i_conn, 1); 1803 } else 1804 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1805 1806 spin_lock(&session->lock); 1807 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; 1808 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1809 hdr->opcode = reject->op_code; 1810 hdr->reason = reject->reason; 1811 hton24(hdr->dlength, reject->data_length); 1812 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); 1813 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); 1814 hdr->ffffffff = cpu_to_be32(RESERVED_ITT); 1815 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, 1816 reject->data_length); 1817 spin_unlock(&session->lock); 1818 } 1819 1820 /** 1821 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion 1822 * @session: iscsi session pointer 1823 * @bnx2i_conn: iscsi connection pointer 1824 * @cqe: pointer to newly DMA'ed CQE entry for processing 1825 * 1826 * process command cleanup response CQE during conn shutdown or error recovery 1827 */ 1828 static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, 1829 struct bnx2i_conn *bnx2i_conn, 1830 struct cqe *cqe) 1831 { 1832 struct bnx2i_cleanup_response *cmd_clean_rsp; 1833 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1834 struct iscsi_task *task; 1835 1836 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; 1837 spin_lock(&session->lock); 1838 task = iscsi_itt_to_task(conn, 1839 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1840 if (!task) 1841 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", 1842 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1843 spin_unlock(&session->lock); 1844 complete(&bnx2i_conn->cmd_cleanup_cmpl); 1845 } 1846 1847 1848 /** 1849 * bnx2i_percpu_io_thread - thread per cpu for ios 1850 * 1851 * @arg: ptr to bnx2i_percpu_info structure 1852 */ 1853 int bnx2i_percpu_io_thread(void *arg) 1854 { 1855 struct bnx2i_percpu_s *p = arg; 1856 struct bnx2i_work *work, *tmp; 1857 LIST_HEAD(work_list); 1858 1859 set_user_nice(current, -20); 1860 1861 while (!kthread_should_stop()) { 1862 spin_lock_bh(&p->p_work_lock); 1863 while (!list_empty(&p->work_list)) { 1864 list_splice_init(&p->work_list, &work_list); 1865 spin_unlock_bh(&p->p_work_lock); 1866 1867 list_for_each_entry_safe(work, tmp, &work_list, list) { 1868 list_del_init(&work->list); 1869 /* work allocated in the bh, freed here */ 1870 bnx2i_process_scsi_cmd_resp(work->session, 1871 work->bnx2i_conn, 1872 &work->cqe); 1873 atomic_dec(&work->bnx2i_conn->work_cnt); 1874 kfree(work); 1875 } 1876 spin_lock_bh(&p->p_work_lock); 1877 } 1878 set_current_state(TASK_INTERRUPTIBLE); 1879 spin_unlock_bh(&p->p_work_lock); 1880 schedule(); 1881 } 1882 __set_current_state(TASK_RUNNING); 1883 1884 return 0; 1885 } 1886 1887 1888 /** 1889 * bnx2i_queue_scsi_cmd_resp - queue cmd completion to the percpu thread 1890 * @bnx2i_conn: bnx2i connection 1891 * 1892 * this function is called by generic KCQ handler to queue all pending cmd 1893 * completion CQEs 1894 * 1895 * The implementation is to queue the cmd response based on the 1896 * last recorded command for the given connection. The 1897 * cpu_id gets recorded upon task_xmit. No out-of-order completion! 1898 */ 1899 static int bnx2i_queue_scsi_cmd_resp(struct iscsi_session *session, 1900 struct bnx2i_conn *bnx2i_conn, 1901 struct bnx2i_nop_in_msg *cqe) 1902 { 1903 struct bnx2i_work *bnx2i_work = NULL; 1904 struct bnx2i_percpu_s *p = NULL; 1905 struct iscsi_task *task; 1906 struct scsi_cmnd *sc; 1907 int rc = 0; 1908 int cpu; 1909 1910 spin_lock(&session->lock); 1911 task = iscsi_itt_to_task(bnx2i_conn->cls_conn->dd_data, 1912 cqe->itt & ISCSI_CMD_RESPONSE_INDEX); 1913 if (!task || !task->sc) { 1914 spin_unlock(&session->lock); 1915 return -EINVAL; 1916 } 1917 sc = task->sc; 1918 1919 if (!blk_rq_cpu_valid(sc->request)) 1920 cpu = smp_processor_id(); 1921 else 1922 cpu = sc->request->cpu; 1923 1924 spin_unlock(&session->lock); 1925 1926 p = &per_cpu(bnx2i_percpu, cpu); 1927 spin_lock(&p->p_work_lock); 1928 if (unlikely(!p->iothread)) { 1929 rc = -EINVAL; 1930 goto err; 1931 } 1932 /* Alloc and copy to the cqe */ 1933 bnx2i_work = kzalloc(sizeof(struct bnx2i_work), GFP_ATOMIC); 1934 if (bnx2i_work) { 1935 INIT_LIST_HEAD(&bnx2i_work->list); 1936 bnx2i_work->session = session; 1937 bnx2i_work->bnx2i_conn = bnx2i_conn; 1938 memcpy(&bnx2i_work->cqe, cqe, sizeof(struct cqe)); 1939 list_add_tail(&bnx2i_work->list, &p->work_list); 1940 atomic_inc(&bnx2i_conn->work_cnt); 1941 wake_up_process(p->iothread); 1942 spin_unlock(&p->p_work_lock); 1943 goto done; 1944 } else 1945 rc = -ENOMEM; 1946 err: 1947 spin_unlock(&p->p_work_lock); 1948 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, (struct cqe *)cqe); 1949 done: 1950 return rc; 1951 } 1952 1953 1954 /** 1955 * bnx2i_process_new_cqes - process newly DMA'ed CQE's 1956 * @bnx2i_conn: bnx2i connection 1957 * 1958 * this function is called by generic KCQ handler to process all pending CQE's 1959 */ 1960 static int bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) 1961 { 1962 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1963 struct iscsi_session *session = conn->session; 1964 struct qp_info *qp; 1965 struct bnx2i_nop_in_msg *nopin; 1966 int tgt_async_msg; 1967 int cqe_cnt = 0; 1968 1969 if (bnx2i_conn->ep == NULL) 1970 return 0; 1971 1972 qp = &bnx2i_conn->ep->qp; 1973 1974 if (!qp->cq_virt) { 1975 printk(KERN_ALERT "bnx2i (%s): cq resr freed in bh execution!", 1976 bnx2i_conn->hba->netdev->name); 1977 goto out; 1978 } 1979 while (1) { 1980 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; 1981 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) 1982 break; 1983 1984 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) { 1985 if (nopin->op_code == ISCSI_OP_NOOP_IN && 1986 nopin->itt == (u16) RESERVED_ITT) { 1987 printk(KERN_ALERT "bnx2i: Unsolicited " 1988 "NOP-In detected for suspended " 1989 "connection dev=%s!\n", 1990 bnx2i_conn->hba->netdev->name); 1991 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1992 goto cqe_out; 1993 } 1994 break; 1995 } 1996 tgt_async_msg = 0; 1997 1998 switch (nopin->op_code) { 1999 case ISCSI_OP_SCSI_CMD_RSP: 2000 case ISCSI_OP_SCSI_DATA_IN: 2001 /* Run the kthread engine only for data cmds 2002 All other cmds will be completed in this bh! */ 2003 bnx2i_queue_scsi_cmd_resp(session, bnx2i_conn, nopin); 2004 break; 2005 case ISCSI_OP_LOGIN_RSP: 2006 bnx2i_process_login_resp(session, bnx2i_conn, 2007 qp->cq_cons_qe); 2008 break; 2009 case ISCSI_OP_SCSI_TMFUNC_RSP: 2010 bnx2i_process_tmf_resp(session, bnx2i_conn, 2011 qp->cq_cons_qe); 2012 break; 2013 case ISCSI_OP_TEXT_RSP: 2014 bnx2i_process_text_resp(session, bnx2i_conn, 2015 qp->cq_cons_qe); 2016 break; 2017 case ISCSI_OP_LOGOUT_RSP: 2018 bnx2i_process_logout_resp(session, bnx2i_conn, 2019 qp->cq_cons_qe); 2020 break; 2021 case ISCSI_OP_NOOP_IN: 2022 if (bnx2i_process_nopin_mesg(session, bnx2i_conn, 2023 qp->cq_cons_qe)) 2024 tgt_async_msg = 1; 2025 break; 2026 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: 2027 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, 2028 qp->cq_cons_qe); 2029 break; 2030 case ISCSI_OP_ASYNC_EVENT: 2031 bnx2i_process_async_mesg(session, bnx2i_conn, 2032 qp->cq_cons_qe); 2033 tgt_async_msg = 1; 2034 break; 2035 case ISCSI_OP_REJECT: 2036 bnx2i_process_reject_mesg(session, bnx2i_conn, 2037 qp->cq_cons_qe); 2038 break; 2039 case ISCSI_OPCODE_CLEANUP_RESPONSE: 2040 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, 2041 qp->cq_cons_qe); 2042 break; 2043 default: 2044 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 2045 nopin->op_code); 2046 } 2047 if (!tgt_async_msg) { 2048 if (!atomic_read(&bnx2i_conn->ep->num_active_cmds)) 2049 printk(KERN_ALERT "bnx2i (%s): no active cmd! " 2050 "op 0x%x\n", 2051 bnx2i_conn->hba->netdev->name, 2052 nopin->op_code); 2053 else 2054 atomic_dec(&bnx2i_conn->ep->num_active_cmds); 2055 } 2056 cqe_out: 2057 /* clear out in production version only, till beta keep opcode 2058 * field intact, will be helpful in debugging (context dump) 2059 * nopin->op_code = 0; 2060 */ 2061 cqe_cnt++; 2062 qp->cqe_exp_seq_sn++; 2063 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) 2064 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; 2065 2066 if (qp->cq_cons_qe == qp->cq_last_qe) { 2067 qp->cq_cons_qe = qp->cq_first_qe; 2068 qp->cq_cons_idx = 0; 2069 } else { 2070 qp->cq_cons_qe++; 2071 qp->cq_cons_idx++; 2072 } 2073 } 2074 out: 2075 return cqe_cnt; 2076 } 2077 2078 /** 2079 * bnx2i_fastpath_notification - process global event queue (KCQ) 2080 * @hba: adapter structure pointer 2081 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry 2082 * 2083 * Fast path event notification handler, KCQ entry carries context id 2084 * of the connection that has 1 or more pending CQ entries 2085 */ 2086 static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, 2087 struct iscsi_kcqe *new_cqe_kcqe) 2088 { 2089 struct bnx2i_conn *bnx2i_conn; 2090 u32 iscsi_cid; 2091 int nxt_idx; 2092 2093 iscsi_cid = new_cqe_kcqe->iscsi_conn_id; 2094 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 2095 2096 if (!bnx2i_conn) { 2097 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); 2098 return; 2099 } 2100 if (!bnx2i_conn->ep) { 2101 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); 2102 return; 2103 } 2104 2105 bnx2i_process_new_cqes(bnx2i_conn); 2106 nxt_idx = bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, 2107 CNIC_ARM_CQE_FP); 2108 if (nxt_idx && nxt_idx == bnx2i_process_new_cqes(bnx2i_conn)) 2109 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE_FP); 2110 } 2111 2112 2113 /** 2114 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE 2115 * @hba: adapter structure pointer 2116 * @update_kcqe: kcqe pointer 2117 * 2118 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration 2119 */ 2120 static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, 2121 struct iscsi_kcqe *update_kcqe) 2122 { 2123 struct bnx2i_conn *conn; 2124 u32 iscsi_cid; 2125 2126 iscsi_cid = update_kcqe->iscsi_conn_id; 2127 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 2128 2129 if (!conn) { 2130 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); 2131 return; 2132 } 2133 if (!conn->ep) { 2134 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); 2135 return; 2136 } 2137 2138 if (update_kcqe->completion_status) { 2139 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); 2140 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; 2141 } else 2142 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; 2143 2144 wake_up_interruptible(&conn->ep->ofld_wait); 2145 } 2146 2147 2148 /** 2149 * bnx2i_recovery_que_add_conn - add connection to recovery queue 2150 * @hba: adapter structure pointer 2151 * @bnx2i_conn: iscsi connection 2152 * 2153 * Add connection to recovery queue and schedule adapter eh worker 2154 */ 2155 static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, 2156 struct bnx2i_conn *bnx2i_conn) 2157 { 2158 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, 2159 ISCSI_ERR_CONN_FAILED); 2160 } 2161 2162 2163 /** 2164 * bnx2i_process_tcp_error - process error notification on a given connection 2165 * 2166 * @hba: adapter structure pointer 2167 * @tcp_err: tcp error kcqe pointer 2168 * 2169 * handles tcp level error notifications from FW. 2170 */ 2171 static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, 2172 struct iscsi_kcqe *tcp_err) 2173 { 2174 struct bnx2i_conn *bnx2i_conn; 2175 u32 iscsi_cid; 2176 2177 iscsi_cid = tcp_err->iscsi_conn_id; 2178 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 2179 2180 if (!bnx2i_conn) { 2181 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 2182 return; 2183 } 2184 2185 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", 2186 iscsi_cid, tcp_err->completion_status); 2187 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2188 } 2189 2190 2191 /** 2192 * bnx2i_process_iscsi_error - process error notification on a given connection 2193 * @hba: adapter structure pointer 2194 * @iscsi_err: iscsi error kcqe pointer 2195 * 2196 * handles iscsi error notifications from the FW. Firmware based in initial 2197 * handshake classifies iscsi protocol / TCP rfc violation into either 2198 * warning or error indications. If indication is of "Error" type, driver 2199 * will initiate session recovery for that connection/session. For 2200 * "Warning" type indication, driver will put out a system log message 2201 * (there will be only one message for each type for the life of the 2202 * session, this is to avoid un-necessarily overloading the system) 2203 */ 2204 static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, 2205 struct iscsi_kcqe *iscsi_err) 2206 { 2207 struct bnx2i_conn *bnx2i_conn; 2208 u32 iscsi_cid; 2209 char warn_notice[] = "iscsi_warning"; 2210 char error_notice[] = "iscsi_error"; 2211 char additional_notice[64]; 2212 char *message; 2213 int need_recovery; 2214 u64 err_mask64; 2215 2216 iscsi_cid = iscsi_err->iscsi_conn_id; 2217 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 2218 if (!bnx2i_conn) { 2219 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 2220 return; 2221 } 2222 2223 err_mask64 = (0x1ULL << iscsi_err->completion_status); 2224 2225 if (err_mask64 & iscsi_error_mask) { 2226 need_recovery = 0; 2227 message = warn_notice; 2228 } else { 2229 need_recovery = 1; 2230 message = error_notice; 2231 } 2232 2233 switch (iscsi_err->completion_status) { 2234 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: 2235 strcpy(additional_notice, "hdr digest err"); 2236 break; 2237 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: 2238 strcpy(additional_notice, "data digest err"); 2239 break; 2240 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: 2241 strcpy(additional_notice, "wrong opcode rcvd"); 2242 break; 2243 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: 2244 strcpy(additional_notice, "AHS len > 0 rcvd"); 2245 break; 2246 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: 2247 strcpy(additional_notice, "invalid ITT rcvd"); 2248 break; 2249 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: 2250 strcpy(additional_notice, "wrong StatSN rcvd"); 2251 break; 2252 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: 2253 strcpy(additional_notice, "wrong DataSN rcvd"); 2254 break; 2255 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: 2256 strcpy(additional_notice, "pend R2T violation"); 2257 break; 2258 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: 2259 strcpy(additional_notice, "ERL0, UO"); 2260 break; 2261 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: 2262 strcpy(additional_notice, "ERL0, U1"); 2263 break; 2264 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: 2265 strcpy(additional_notice, "ERL0, U2"); 2266 break; 2267 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: 2268 strcpy(additional_notice, "ERL0, U3"); 2269 break; 2270 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: 2271 strcpy(additional_notice, "ERL0, U4"); 2272 break; 2273 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: 2274 strcpy(additional_notice, "ERL0, U5"); 2275 break; 2276 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: 2277 strcpy(additional_notice, "ERL0, U6"); 2278 break; 2279 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: 2280 strcpy(additional_notice, "invalid resi len"); 2281 break; 2282 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: 2283 strcpy(additional_notice, "MRDSL violation"); 2284 break; 2285 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: 2286 strcpy(additional_notice, "F-bit not set"); 2287 break; 2288 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: 2289 strcpy(additional_notice, "invalid TTT"); 2290 break; 2291 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: 2292 strcpy(additional_notice, "invalid DataSN"); 2293 break; 2294 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: 2295 strcpy(additional_notice, "burst len violation"); 2296 break; 2297 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: 2298 strcpy(additional_notice, "buf offset violation"); 2299 break; 2300 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: 2301 strcpy(additional_notice, "invalid LUN field"); 2302 break; 2303 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: 2304 strcpy(additional_notice, "invalid R2TSN field"); 2305 break; 2306 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ 2307 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 2308 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: 2309 strcpy(additional_notice, "invalid cmd len1"); 2310 break; 2311 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ 2312 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 2313 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: 2314 strcpy(additional_notice, "invalid cmd len2"); 2315 break; 2316 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: 2317 strcpy(additional_notice, 2318 "pend r2t exceeds MaxOutstandingR2T value"); 2319 break; 2320 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: 2321 strcpy(additional_notice, "TTT is rsvd"); 2322 break; 2323 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: 2324 strcpy(additional_notice, "MBL violation"); 2325 break; 2326 #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ 2327 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO 2328 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: 2329 strcpy(additional_notice, "data seg len != 0"); 2330 break; 2331 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: 2332 strcpy(additional_notice, "reject pdu len error"); 2333 break; 2334 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: 2335 strcpy(additional_notice, "async pdu len error"); 2336 break; 2337 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: 2338 strcpy(additional_notice, "nopin pdu len error"); 2339 break; 2340 #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ 2341 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP 2342 case BNX2_ERR_PEND_R2T_IN_CLEANUP: 2343 strcpy(additional_notice, "pend r2t in cleanup"); 2344 break; 2345 2346 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: 2347 strcpy(additional_notice, "IP fragments rcvd"); 2348 break; 2349 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: 2350 strcpy(additional_notice, "IP options error"); 2351 break; 2352 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: 2353 strcpy(additional_notice, "urgent flag error"); 2354 break; 2355 default: 2356 printk(KERN_ALERT "iscsi_err - unknown err %x\n", 2357 iscsi_err->completion_status); 2358 } 2359 2360 if (need_recovery) { 2361 iscsi_conn_printk(KERN_ALERT, 2362 bnx2i_conn->cls_conn->dd_data, 2363 "bnx2i: %s - %s\n", 2364 message, additional_notice); 2365 2366 iscsi_conn_printk(KERN_ALERT, 2367 bnx2i_conn->cls_conn->dd_data, 2368 "conn_err - hostno %d conn %p, " 2369 "iscsi_cid %x cid %x\n", 2370 bnx2i_conn->hba->shost->host_no, 2371 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, 2372 bnx2i_conn->ep->ep_cid); 2373 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2374 } else 2375 if (!test_and_set_bit(iscsi_err->completion_status, 2376 (void *) &bnx2i_conn->violation_notified)) 2377 iscsi_conn_printk(KERN_ALERT, 2378 bnx2i_conn->cls_conn->dd_data, 2379 "bnx2i: %s - %s\n", 2380 message, additional_notice); 2381 } 2382 2383 2384 /** 2385 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion 2386 * @hba: adapter structure pointer 2387 * @conn_destroy: conn destroy kcqe pointer 2388 * 2389 * handles connection destroy completion request. 2390 */ 2391 static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, 2392 struct iscsi_kcqe *conn_destroy) 2393 { 2394 struct bnx2i_endpoint *ep; 2395 2396 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); 2397 if (!ep) { 2398 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " 2399 "offload request, unexpected complection\n"); 2400 return; 2401 } 2402 2403 if (hba != ep->hba) { 2404 printk(KERN_ALERT "conn destroy- error hba mis-match\n"); 2405 return; 2406 } 2407 2408 if (conn_destroy->completion_status) { 2409 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); 2410 ep->state = EP_STATE_CLEANUP_FAILED; 2411 } else 2412 ep->state = EP_STATE_CLEANUP_CMPL; 2413 wake_up_interruptible(&ep->ofld_wait); 2414 } 2415 2416 2417 /** 2418 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion 2419 * @hba: adapter structure pointer 2420 * @ofld_kcqe: conn offload kcqe pointer 2421 * 2422 * handles initial connection offload completion, ep_connect() thread is 2423 * woken-up to continue with LLP connect process 2424 */ 2425 static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, 2426 struct iscsi_kcqe *ofld_kcqe) 2427 { 2428 u32 cid_addr; 2429 struct bnx2i_endpoint *ep; 2430 u32 cid_num; 2431 2432 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); 2433 if (!ep) { 2434 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); 2435 return; 2436 } 2437 2438 if (hba != ep->hba) { 2439 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); 2440 return; 2441 } 2442 2443 if (ofld_kcqe->completion_status) { 2444 ep->state = EP_STATE_OFLD_FAILED; 2445 if (ofld_kcqe->completion_status == 2446 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) 2447 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - unable " 2448 "to allocate iSCSI context resources\n", 2449 hba->netdev->name); 2450 else if (ofld_kcqe->completion_status == 2451 ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE) 2452 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " 2453 "opcode\n", hba->netdev->name); 2454 else if (ofld_kcqe->completion_status == 2455 ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY) 2456 /* error status code valid only for 5771x chipset */ 2457 ep->state = EP_STATE_OFLD_FAILED_CID_BUSY; 2458 else 2459 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " 2460 "error code %d\n", hba->netdev->name, 2461 ofld_kcqe->completion_status); 2462 } else { 2463 ep->state = EP_STATE_OFLD_COMPL; 2464 cid_addr = ofld_kcqe->iscsi_conn_context_id; 2465 cid_num = bnx2i_get_cid_num(ep); 2466 ep->ep_cid = cid_addr; 2467 ep->qp.ctx_base = NULL; 2468 } 2469 wake_up_interruptible(&ep->ofld_wait); 2470 } 2471 2472 /** 2473 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE 2474 * @hba: adapter structure pointer 2475 * @update_kcqe: kcqe pointer 2476 * 2477 * Generic KCQ event handler/dispatcher 2478 */ 2479 static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], 2480 u32 num_cqe) 2481 { 2482 struct bnx2i_hba *hba = context; 2483 int i = 0; 2484 struct iscsi_kcqe *ikcqe = NULL; 2485 2486 while (i < num_cqe) { 2487 ikcqe = (struct iscsi_kcqe *) kcqe[i++]; 2488 2489 if (ikcqe->op_code == 2490 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) 2491 bnx2i_fastpath_notification(hba, ikcqe); 2492 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) 2493 bnx2i_process_ofld_cmpl(hba, ikcqe); 2494 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) 2495 bnx2i_process_update_conn_cmpl(hba, ikcqe); 2496 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { 2497 if (ikcqe->completion_status != 2498 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) 2499 bnx2i_iscsi_license_error(hba, ikcqe->\ 2500 completion_status); 2501 else { 2502 set_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2503 bnx2i_get_link_state(hba); 2504 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " 2505 "ISCSI_INIT passed\n", 2506 (u8)hba->pcidev->bus->number, 2507 hba->pci_devno, 2508 (u8)hba->pci_func); 2509 2510 2511 } 2512 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) 2513 bnx2i_process_conn_destroy_cmpl(hba, ikcqe); 2514 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) 2515 bnx2i_process_iscsi_error(hba, ikcqe); 2516 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) 2517 bnx2i_process_tcp_error(hba, ikcqe); 2518 else 2519 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 2520 ikcqe->op_code); 2521 } 2522 } 2523 2524 2525 /** 2526 * bnx2i_indicate_netevent - Generic netdev event handler 2527 * @context: adapter structure pointer 2528 * @event: event type 2529 * @vlan_id: vlans id - associated vlan id with this event 2530 * 2531 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, 2532 * NETDEV_GOING_DOWN and NETDEV_CHANGE 2533 */ 2534 static void bnx2i_indicate_netevent(void *context, unsigned long event, 2535 u16 vlan_id) 2536 { 2537 struct bnx2i_hba *hba = context; 2538 2539 /* Ignore all netevent coming from vlans */ 2540 if (vlan_id != 0) 2541 return; 2542 2543 switch (event) { 2544 case NETDEV_UP: 2545 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 2546 bnx2i_send_fw_iscsi_init_msg(hba); 2547 break; 2548 case NETDEV_DOWN: 2549 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2550 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2551 break; 2552 case NETDEV_GOING_DOWN: 2553 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2554 iscsi_host_for_each_session(hba->shost, 2555 bnx2i_drop_session); 2556 break; 2557 case NETDEV_CHANGE: 2558 bnx2i_get_link_state(hba); 2559 break; 2560 default: 2561 ; 2562 } 2563 } 2564 2565 2566 /** 2567 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion 2568 * @cm_sk: cnic sock structure pointer 2569 * 2570 * function callback exported via bnx2i - cnic driver interface to 2571 * indicate completion of option-2 TCP connect request. 2572 */ 2573 static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) 2574 { 2575 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2576 2577 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) 2578 ep->state = EP_STATE_CONNECT_FAILED; 2579 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) 2580 ep->state = EP_STATE_CONNECT_COMPL; 2581 else 2582 ep->state = EP_STATE_CONNECT_FAILED; 2583 2584 wake_up_interruptible(&ep->ofld_wait); 2585 } 2586 2587 2588 /** 2589 * bnx2i_cm_close_cmpl - process tcp conn close completion 2590 * @cm_sk: cnic sock structure pointer 2591 * 2592 * function callback exported via bnx2i - cnic driver interface to 2593 * indicate completion of option-2 graceful TCP connect shutdown 2594 */ 2595 static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) 2596 { 2597 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2598 2599 ep->state = EP_STATE_DISCONN_COMPL; 2600 wake_up_interruptible(&ep->ofld_wait); 2601 } 2602 2603 2604 /** 2605 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion 2606 * @cm_sk: cnic sock structure pointer 2607 * 2608 * function callback exported via bnx2i - cnic driver interface to 2609 * indicate completion of option-2 abortive TCP connect termination 2610 */ 2611 static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) 2612 { 2613 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2614 2615 ep->state = EP_STATE_DISCONN_COMPL; 2616 wake_up_interruptible(&ep->ofld_wait); 2617 } 2618 2619 2620 /** 2621 * bnx2i_cm_remote_close - process received TCP FIN 2622 * @hba: adapter structure pointer 2623 * @update_kcqe: kcqe pointer 2624 * 2625 * function callback exported via bnx2i - cnic driver interface to indicate 2626 * async TCP events such as FIN 2627 */ 2628 static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) 2629 { 2630 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2631 2632 ep->state = EP_STATE_TCP_FIN_RCVD; 2633 if (ep->conn) 2634 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2635 } 2636 2637 /** 2638 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup 2639 * @hba: adapter structure pointer 2640 * @update_kcqe: kcqe pointer 2641 * 2642 * function callback exported via bnx2i - cnic driver interface to 2643 * indicate async TCP events (RST) sent by the peer. 2644 */ 2645 static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) 2646 { 2647 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2648 u32 old_state = ep->state; 2649 2650 ep->state = EP_STATE_TCP_RST_RCVD; 2651 if (old_state == EP_STATE_DISCONN_START) 2652 wake_up_interruptible(&ep->ofld_wait); 2653 else 2654 if (ep->conn) 2655 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2656 } 2657 2658 2659 static int bnx2i_send_nl_mesg(void *context, u32 msg_type, 2660 char *buf, u16 buflen) 2661 { 2662 struct bnx2i_hba *hba = context; 2663 int rc; 2664 2665 if (!hba) 2666 return -ENODEV; 2667 2668 rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, 2669 msg_type, buf, buflen); 2670 if (rc) 2671 printk(KERN_ALERT "bnx2i: private nl message send error\n"); 2672 2673 return rc; 2674 } 2675 2676 2677 /** 2678 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure 2679 * carrying callback function pointers 2680 * 2681 */ 2682 struct cnic_ulp_ops bnx2i_cnic_cb = { 2683 .cnic_init = bnx2i_ulp_init, 2684 .cnic_exit = bnx2i_ulp_exit, 2685 .cnic_start = bnx2i_start, 2686 .cnic_stop = bnx2i_stop, 2687 .indicate_kcqes = bnx2i_indicate_kcqe, 2688 .indicate_netevent = bnx2i_indicate_netevent, 2689 .cm_connect_complete = bnx2i_cm_connect_cmpl, 2690 .cm_close_complete = bnx2i_cm_close_cmpl, 2691 .cm_abort_complete = bnx2i_cm_abort_cmpl, 2692 .cm_remote_close = bnx2i_cm_remote_close, 2693 .cm_remote_abort = bnx2i_cm_remote_abort, 2694 .iscsi_nl_send_msg = bnx2i_send_nl_mesg, 2695 .owner = THIS_MODULE 2696 }; 2697 2698 2699 /** 2700 * bnx2i_map_ep_dbell_regs - map connection doorbell registers 2701 * @ep: bnx2i endpoint 2702 * 2703 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these 2704 * register in BAR #0. Whereas in 57710 these register are accessed by 2705 * mapping BAR #1 2706 */ 2707 int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) 2708 { 2709 u32 cid_num; 2710 u32 reg_off; 2711 u32 first_l4l5; 2712 u32 ctx_sz; 2713 u32 config2; 2714 resource_size_t reg_base; 2715 2716 cid_num = bnx2i_get_cid_num(ep); 2717 2718 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 2719 reg_base = pci_resource_start(ep->hba->pcidev, 2720 BNX2X_DOORBELL_PCI_BAR); 2721 reg_off = BNX2I_5771X_DBELL_PAGE_SIZE * (cid_num & 0x1FFFF) + 2722 DPM_TRIGER_TYPE; 2723 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); 2724 goto arm_cq; 2725 } 2726 2727 reg_base = ep->hba->netdev->base_addr; 2728 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && 2729 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { 2730 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); 2731 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; 2732 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; 2733 if (ctx_sz) 2734 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE 2735 + BNX2I_570X_PAGE_SIZE_DEFAULT * 2736 (((cid_num - first_l4l5) / ctx_sz) + 256); 2737 else 2738 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2739 } else 2740 /* 5709 device in normal node and 5706/5708 devices */ 2741 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2742 2743 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 2744 MB_KERNEL_CTX_SIZE); 2745 if (!ep->qp.ctx_base) 2746 return -ENOMEM; 2747 2748 arm_cq: 2749 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); 2750 return 0; 2751 } 2752