bnx2i_hwi.c revision 2e15efc7e1f99f56896b89fad9d13baac3c635f9
1/* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. 2 * 3 * Copyright (c) 2006 - 2009 Broadcom Corporation 4 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. 5 * Copyright (c) 2007, 2008 Mike Christie 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation. 10 * 11 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com) 12 */ 13 14#include <linux/gfp.h> 15#include <scsi/scsi_tcq.h> 16#include <scsi/libiscsi.h> 17#include "bnx2i.h" 18 19/** 20 * bnx2i_get_cid_num - get cid from ep 21 * @ep: endpoint pointer 22 * 23 * Only applicable to 57710 family of devices 24 */ 25static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) 26{ 27 u32 cid; 28 29 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 30 cid = ep->ep_cid; 31 else 32 cid = GET_CID_NUM(ep->ep_cid); 33 return cid; 34} 35 36 37/** 38 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type 39 * @hba: Adapter for which adjustments is to be made 40 * 41 * Only applicable to 57710 family of devices 42 */ 43static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) 44{ 45 u32 num_elements_per_pg; 46 47 if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || 48 test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || 49 test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { 50 if (!is_power_of_2(hba->max_sqes)) 51 hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); 52 53 if (!is_power_of_2(hba->max_rqes)) 54 hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); 55 } 56 57 /* Adjust each queue size if the user selection does not 58 * yield integral num of page buffers 59 */ 60 /* adjust SQ */ 61 num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 62 if (hba->max_sqes < num_elements_per_pg) 63 hba->max_sqes = num_elements_per_pg; 64 else if (hba->max_sqes % num_elements_per_pg) 65 hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & 66 ~(num_elements_per_pg - 1); 67 68 /* adjust CQ */ 69 num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; 70 if (hba->max_cqes < num_elements_per_pg) 71 hba->max_cqes = num_elements_per_pg; 72 else if (hba->max_cqes % num_elements_per_pg) 73 hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & 74 ~(num_elements_per_pg - 1); 75 76 /* adjust RQ */ 77 num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; 78 if (hba->max_rqes < num_elements_per_pg) 79 hba->max_rqes = num_elements_per_pg; 80 else if (hba->max_rqes % num_elements_per_pg) 81 hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & 82 ~(num_elements_per_pg - 1); 83} 84 85 86/** 87 * bnx2i_get_link_state - get network interface link state 88 * @hba: adapter instance pointer 89 * 90 * updates adapter structure flag based on netdev state 91 */ 92static void bnx2i_get_link_state(struct bnx2i_hba *hba) 93{ 94 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) 95 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 96 else 97 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 98} 99 100 101/** 102 * bnx2i_iscsi_license_error - displays iscsi license related error message 103 * @hba: adapter instance pointer 104 * @error_code: error classification 105 * 106 * Puts out an error log when driver is unable to offload iscsi connection 107 * due to license restrictions 108 */ 109static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) 110{ 111 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) 112 /* iSCSI offload not supported on this device */ 113 printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", 114 hba->netdev->name); 115 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) 116 /* iSCSI offload not supported on this LOM device */ 117 printk(KERN_ERR "bnx2i: LOM is not enable to " 118 "offload iSCSI connections, dev=%s\n", 119 hba->netdev->name); 120 set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); 121} 122 123 124/** 125 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification 126 * @ep: endpoint (transport indentifier) structure 127 * @action: action, ARM or DISARM. For now only ARM_CQE is used 128 * 129 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt 130 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is 131 * outstanding and on chip timer expires 132 */ 133void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) 134{ 135 struct bnx2i_5771x_cq_db *cq_db; 136 u16 cq_index; 137 u16 next_index; 138 u32 num_active_cmds; 139 140 141 /* Coalesce CQ entries only on 10G devices */ 142 if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 143 return; 144 145 /* Do not update CQ DB multiple times before firmware writes 146 * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious 147 * interrupts and other unwanted results 148 */ 149 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 150 if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) 151 return; 152 153 if (action == CNIC_ARM_CQE) { 154 num_active_cmds = ep->num_active_cmds; 155 if (num_active_cmds <= event_coal_min) 156 next_index = 1; 157 else 158 next_index = event_coal_min + 159 (num_active_cmds - event_coal_min) / event_coal_div; 160 if (!next_index) 161 next_index = 1; 162 cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; 163 if (cq_index > ep->qp.cqe_size * 2) 164 cq_index -= ep->qp.cqe_size * 2; 165 if (!cq_index) 166 cq_index = 1; 167 168 cq_db->sqn[0] = cq_index; 169 } 170} 171 172 173/** 174 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer 175 * @conn: iscsi connection on which RQ event occured 176 * @ptr: driver buffer to which RQ buffer contents is to 177 * be copied 178 * @len: length of valid data inside RQ buf 179 * 180 * Copies RQ buffer contents from shared (DMA'able) memory region to 181 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and 182 * scsi sense info 183 */ 184void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) 185{ 186 if (!bnx2i_conn->ep->qp.rqe_left) 187 return; 188 189 bnx2i_conn->ep->qp.rqe_left--; 190 memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); 191 if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { 192 bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; 193 bnx2i_conn->ep->qp.rq_cons_idx = 0; 194 } else { 195 bnx2i_conn->ep->qp.rq_cons_qe++; 196 bnx2i_conn->ep->qp.rq_cons_idx++; 197 } 198} 199 200 201static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) 202{ 203 struct bnx2i_5771x_dbell dbell; 204 u32 msg; 205 206 memset(&dbell, 0, sizeof(dbell)); 207 dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << 208 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); 209 msg = *((u32 *)&dbell); 210 /* TODO : get doorbell register mapping */ 211 writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); 212} 213 214 215/** 216 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell 217 * @conn: iscsi connection on which event to post 218 * @count: number of RQ buffer being posted to chip 219 * 220 * No need to ring hardware doorbell for 57710 family of devices 221 */ 222void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) 223{ 224 struct bnx2i_5771x_sq_rq_db *rq_db; 225 u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); 226 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 227 228 ep->qp.rqe_left += count; 229 ep->qp.rq_prod_idx &= 0x7FFF; 230 ep->qp.rq_prod_idx += count; 231 232 if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { 233 ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; 234 if (!hi_bit) 235 ep->qp.rq_prod_idx |= 0x8000; 236 } else 237 ep->qp.rq_prod_idx |= hi_bit; 238 239 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 240 rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; 241 rq_db->prod_idx = ep->qp.rq_prod_idx; 242 /* no need to ring hardware doorbell for 57710 */ 243 } else { 244 writew(ep->qp.rq_prod_idx, 245 ep->qp.ctx_base + CNIC_RECV_DOORBELL); 246 } 247 mmiowb(); 248} 249 250 251/** 252 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine 253 * @conn: iscsi connection to which new SQ entries belong 254 * @count: number of SQ WQEs to post 255 * 256 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family 257 * of devices. For 5706/5708/5709 new SQ WQE count is written into the 258 * doorbell register 259 */ 260static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) 261{ 262 struct bnx2i_5771x_sq_rq_db *sq_db; 263 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 264 265 ep->num_active_cmds++; 266 wmb(); /* flush SQ WQE memory before the doorbell is rung */ 267 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 268 sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; 269 sq_db->prod_idx = ep->qp.sq_prod_idx; 270 bnx2i_ring_577xx_doorbell(bnx2i_conn); 271 } else 272 writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); 273 274 mmiowb(); /* flush posted PCI writes */ 275} 276 277 278/** 279 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters 280 * @conn: iscsi connection to which new SQ entries belong 281 * @count: number of SQ WQEs to post 282 * 283 * this routine will update SQ driver parameters and ring the doorbell 284 */ 285static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, 286 int count) 287{ 288 int tmp_cnt; 289 290 if (count == 1) { 291 if (bnx2i_conn->ep->qp.sq_prod_qe == 292 bnx2i_conn->ep->qp.sq_last_qe) 293 bnx2i_conn->ep->qp.sq_prod_qe = 294 bnx2i_conn->ep->qp.sq_first_qe; 295 else 296 bnx2i_conn->ep->qp.sq_prod_qe++; 297 } else { 298 if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= 299 bnx2i_conn->ep->qp.sq_last_qe) 300 bnx2i_conn->ep->qp.sq_prod_qe += count; 301 else { 302 tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - 303 bnx2i_conn->ep->qp.sq_prod_qe; 304 bnx2i_conn->ep->qp.sq_prod_qe = 305 &bnx2i_conn->ep->qp.sq_first_qe[count - 306 (tmp_cnt + 1)]; 307 } 308 } 309 bnx2i_conn->ep->qp.sq_prod_idx += count; 310 /* Ring the doorbell */ 311 bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); 312} 313 314 315/** 316 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware 317 * @conn: iscsi connection 318 * @cmd: driver command structure which is requesting 319 * a WQE to sent to chip for further processing 320 * 321 * prepare and post an iSCSI Login request WQE to CNIC firmware 322 */ 323int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, 324 struct iscsi_task *task) 325{ 326 struct bnx2i_cmd *bnx2i_cmd; 327 struct bnx2i_login_request *login_wqe; 328 struct iscsi_login *login_hdr; 329 u32 dword; 330 331 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 332 login_hdr = (struct iscsi_login *)task->hdr; 333 login_wqe = (struct bnx2i_login_request *) 334 bnx2i_conn->ep->qp.sq_prod_qe; 335 336 login_wqe->op_code = login_hdr->opcode; 337 login_wqe->op_attr = login_hdr->flags; 338 login_wqe->version_max = login_hdr->max_version; 339 login_wqe->version_min = login_hdr->min_version; 340 login_wqe->data_length = ntoh24(login_hdr->dlength); 341 login_wqe->isid_lo = *((u32 *) login_hdr->isid); 342 login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); 343 login_wqe->tsih = login_hdr->tsih; 344 login_wqe->itt = task->itt | 345 (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); 346 login_wqe->cid = login_hdr->cid; 347 348 login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); 349 login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 350 login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN; 351 352 login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; 353 login_wqe->resp_bd_list_addr_hi = 354 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); 355 356 dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | 357 (bnx2i_conn->gen_pdu.resp_buf_size << 358 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); 359 login_wqe->resp_buffer = dword; 360 login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; 361 login_wqe->bd_list_addr_hi = 362 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); 363 login_wqe->num_bds = 1; 364 login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 365 366 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 367 return 0; 368} 369 370/** 371 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware 372 * @conn: iscsi connection 373 * @mtask: driver command structure which is requesting 374 * a WQE to sent to chip for further processing 375 * 376 * prepare and post an iSCSI Login request WQE to CNIC firmware 377 */ 378int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, 379 struct iscsi_task *mtask) 380{ 381 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 382 struct iscsi_tm *tmfabort_hdr; 383 struct scsi_cmnd *ref_sc; 384 struct iscsi_task *ctask; 385 struct bnx2i_cmd *bnx2i_cmd; 386 struct bnx2i_tmf_request *tmfabort_wqe; 387 u32 dword; 388 u32 scsi_lun[2]; 389 390 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; 391 tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; 392 tmfabort_wqe = (struct bnx2i_tmf_request *) 393 bnx2i_conn->ep->qp.sq_prod_qe; 394 395 tmfabort_wqe->op_code = tmfabort_hdr->opcode; 396 tmfabort_wqe->op_attr = 0; 397 tmfabort_wqe->op_attr = 398 ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK; 399 400 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); 401 tmfabort_wqe->reserved2 = 0; 402 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); 403 404 ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); 405 if (!ctask || !ctask->sc) 406 /* 407 * the iscsi layer must have completed the cmd while this 408 * was starting up. 409 * 410 * Note: In the case of a SCSI cmd timeout, the task's sc 411 * is still active; hence ctask->sc != 0 412 * In this case, the task must be aborted 413 */ 414 return 0; 415 416 ref_sc = ctask->sc; 417 418 /* Retrieve LUN directly from the ref_sc */ 419 int_to_scsilun(ref_sc->device->lun, (struct scsi_lun *) scsi_lun); 420 tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); 421 tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); 422 423 if (ref_sc->sc_data_direction == DMA_TO_DEVICE) 424 dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT); 425 else 426 dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT); 427 tmfabort_wqe->ref_itt = (dword | (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); 428 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); 429 430 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 431 tmfabort_wqe->bd_list_addr_hi = (u32) 432 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 433 tmfabort_wqe->num_bds = 1; 434 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 435 436 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 437 return 0; 438} 439 440/** 441 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware 442 * @conn: iscsi connection 443 * @cmd: driver command structure which is requesting 444 * a WQE to sent to chip for further processing 445 * 446 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware 447 */ 448int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, 449 struct bnx2i_cmd *cmd) 450{ 451 struct bnx2i_cmd_request *scsi_cmd_wqe; 452 453 scsi_cmd_wqe = (struct bnx2i_cmd_request *) 454 bnx2i_conn->ep->qp.sq_prod_qe; 455 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); 456 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 457 458 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 459 return 0; 460} 461 462/** 463 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware 464 * @conn: iscsi connection 465 * @cmd: driver command structure which is requesting 466 * a WQE to sent to chip for further processing 467 * @ttt: TTT to be used when building pdu header 468 * @datap: payload buffer pointer 469 * @data_len: payload data length 470 * @unsol: indicated whether nopout pdu is unsolicited pdu or 471 * in response to target's NOPIN w/ TTT != FFFFFFFF 472 * 473 * prepare and post a nopout request WQE to CNIC firmware 474 */ 475int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, 476 struct iscsi_task *task, u32 ttt, 477 char *datap, int data_len, int unsol) 478{ 479 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 480 struct bnx2i_cmd *bnx2i_cmd; 481 struct bnx2i_nop_out_request *nopout_wqe; 482 struct iscsi_nopout *nopout_hdr; 483 484 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 485 nopout_hdr = (struct iscsi_nopout *)task->hdr; 486 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; 487 nopout_wqe->op_code = nopout_hdr->opcode; 488 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; 489 memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); 490 491 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 492 u32 tmp = nopout_hdr->lun[0]; 493 /* 57710 requires LUN field to be swapped */ 494 nopout_hdr->lun[0] = nopout_hdr->lun[1]; 495 nopout_hdr->lun[1] = tmp; 496 } 497 498 nopout_wqe->itt = ((u16)task->itt | 499 (ISCSI_TASK_TYPE_MPATH << 500 ISCSI_TMF_REQUEST_TYPE_SHIFT)); 501 nopout_wqe->ttt = ttt; 502 nopout_wqe->flags = 0; 503 if (!unsol) 504 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 505 else if (nopout_hdr->itt == RESERVED_ITT) 506 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 507 508 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 509 nopout_wqe->data_length = data_len; 510 if (data_len) { 511 /* handle payload data, not required in first release */ 512 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); 513 } else { 514 nopout_wqe->bd_list_addr_lo = (u32) 515 bnx2i_conn->hba->mp_bd_dma; 516 nopout_wqe->bd_list_addr_hi = 517 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 518 nopout_wqe->num_bds = 1; 519 } 520 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 521 522 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 523 return 0; 524} 525 526 527/** 528 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware 529 * @conn: iscsi connection 530 * @cmd: driver command structure which is requesting 531 * a WQE to sent to chip for further processing 532 * 533 * prepare and post logout request WQE to CNIC firmware 534 */ 535int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, 536 struct iscsi_task *task) 537{ 538 struct bnx2i_cmd *bnx2i_cmd; 539 struct bnx2i_logout_request *logout_wqe; 540 struct iscsi_logout *logout_hdr; 541 542 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 543 logout_hdr = (struct iscsi_logout *)task->hdr; 544 545 logout_wqe = (struct bnx2i_logout_request *) 546 bnx2i_conn->ep->qp.sq_prod_qe; 547 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); 548 549 logout_wqe->op_code = logout_hdr->opcode; 550 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 551 logout_wqe->op_attr = 552 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; 553 logout_wqe->itt = ((u16)task->itt | 554 (ISCSI_TASK_TYPE_MPATH << 555 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); 556 logout_wqe->data_length = 0; 557 logout_wqe->cid = 0; 558 559 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 560 logout_wqe->bd_list_addr_hi = (u32) 561 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 562 logout_wqe->num_bds = 1; 563 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 564 565 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 566 return 0; 567} 568 569 570/** 571 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware 572 * @conn: iscsi connection which requires iscsi parameter update 573 * 574 * sends down iSCSI Conn Update request to move iSCSI conn to FFP 575 */ 576void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) 577{ 578 struct bnx2i_conn *bnx2i_conn = conn->dd_data; 579 struct bnx2i_hba *hba = bnx2i_conn->hba; 580 struct kwqe *kwqe_arr[2]; 581 struct iscsi_kwqe_conn_update *update_wqe; 582 struct iscsi_kwqe_conn_update conn_update_kwqe; 583 584 update_wqe = &conn_update_kwqe; 585 586 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; 587 update_wqe->hdr.flags = 588 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 589 590 /* 5771x requires conn context id to be passed as is */ 591 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) 592 update_wqe->context_id = bnx2i_conn->ep->ep_cid; 593 else 594 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); 595 update_wqe->conn_flags = 0; 596 if (conn->hdrdgst_en) 597 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; 598 if (conn->datadgst_en) 599 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; 600 if (conn->session->initial_r2t_en) 601 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; 602 if (conn->session->imm_data_en) 603 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; 604 605 update_wqe->max_send_pdu_length = conn->max_xmit_dlength; 606 update_wqe->max_recv_pdu_length = conn->max_recv_dlength; 607 update_wqe->first_burst_length = conn->session->first_burst; 608 update_wqe->max_burst_length = conn->session->max_burst; 609 update_wqe->exp_stat_sn = conn->exp_statsn; 610 update_wqe->max_outstanding_r2ts = conn->session->max_r2t; 611 update_wqe->session_error_recovery_level = conn->session->erl; 612 iscsi_conn_printk(KERN_ALERT, conn, 613 "bnx2i: conn update - MBL 0x%x FBL 0x%x" 614 "MRDSL_I 0x%x MRDSL_T 0x%x \n", 615 update_wqe->max_burst_length, 616 update_wqe->first_burst_length, 617 update_wqe->max_recv_pdu_length, 618 update_wqe->max_send_pdu_length); 619 620 kwqe_arr[0] = (struct kwqe *) update_wqe; 621 if (hba->cnic && hba->cnic->submit_kwqes) 622 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 623} 624 625 626/** 627 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware 628 * @data: endpoint (transport handle) structure pointer 629 * 630 * routine to handle connection offload/destroy request timeout 631 */ 632void bnx2i_ep_ofld_timer(unsigned long data) 633{ 634 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; 635 636 if (ep->state == EP_STATE_OFLD_START) { 637 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); 638 ep->state = EP_STATE_OFLD_FAILED; 639 } else if (ep->state == EP_STATE_DISCONN_START) { 640 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); 641 ep->state = EP_STATE_DISCONN_TIMEDOUT; 642 } else if (ep->state == EP_STATE_CLEANUP_START) { 643 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); 644 ep->state = EP_STATE_CLEANUP_FAILED; 645 } 646 647 wake_up_interruptible(&ep->ofld_wait); 648} 649 650 651static int bnx2i_power_of2(u32 val) 652{ 653 u32 power = 0; 654 if (val & (val - 1)) 655 return power; 656 val--; 657 while (val) { 658 val = val >> 1; 659 power++; 660 } 661 return power; 662} 663 664 665/** 666 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request 667 * @hba: adapter structure pointer 668 * @cmd: driver command structure which is requesting 669 * a WQE to sent to chip for further processing 670 * 671 * prepares and posts CONN_OFLD_REQ1/2 KWQE 672 */ 673void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) 674{ 675 struct bnx2i_cleanup_request *cmd_cleanup; 676 677 cmd_cleanup = 678 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; 679 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); 680 681 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; 682 cmd_cleanup->itt = cmd->req.itt; 683 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ 684 685 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); 686} 687 688 689/** 690 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process 691 * @hba: adapter structure pointer 692 * @ep: endpoint (transport indentifier) structure 693 * 694 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate 695 * iscsi connection context clean-up process 696 */ 697void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 698{ 699 struct kwqe *kwqe_arr[2]; 700 struct iscsi_kwqe_conn_destroy conn_cleanup; 701 702 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); 703 704 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; 705 conn_cleanup.hdr.flags = 706 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 707 /* 5771x requires conn context id to be passed as is */ 708 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 709 conn_cleanup.context_id = ep->ep_cid; 710 else 711 conn_cleanup.context_id = (ep->ep_cid >> 7); 712 713 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; 714 715 kwqe_arr[0] = (struct kwqe *) &conn_cleanup; 716 if (hba->cnic && hba->cnic->submit_kwqes) 717 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 718} 719 720 721/** 722 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process 723 * @hba: adapter structure pointer 724 * @ep: endpoint (transport indentifier) structure 725 * 726 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 727 */ 728static void bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, 729 struct bnx2i_endpoint *ep) 730{ 731 struct kwqe *kwqe_arr[2]; 732 struct iscsi_kwqe_conn_offload1 ofld_req1; 733 struct iscsi_kwqe_conn_offload2 ofld_req2; 734 dma_addr_t dma_addr; 735 int num_kwqes = 2; 736 u32 *ptbl; 737 738 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 739 ofld_req1.hdr.flags = 740 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 741 742 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 743 744 dma_addr = ep->qp.sq_pgtbl_phys; 745 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 746 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 747 748 dma_addr = ep->qp.cq_pgtbl_phys; 749 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 750 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 751 752 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 753 ofld_req2.hdr.flags = 754 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 755 756 dma_addr = ep->qp.rq_pgtbl_phys; 757 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 758 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 759 760 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 761 762 ofld_req2.sq_first_pte.hi = *ptbl++; 763 ofld_req2.sq_first_pte.lo = *ptbl; 764 765 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 766 ofld_req2.cq_first_pte.hi = *ptbl++; 767 ofld_req2.cq_first_pte.lo = *ptbl; 768 769 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 770 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 771 ofld_req2.num_additional_wqes = 0; 772 773 if (hba->cnic && hba->cnic->submit_kwqes) 774 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 775} 776 777 778/** 779 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation 780 * @hba: adapter structure pointer 781 * @ep: endpoint (transport indentifier) structure 782 * 783 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 784 */ 785static void bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, 786 struct bnx2i_endpoint *ep) 787{ 788 struct kwqe *kwqe_arr[5]; 789 struct iscsi_kwqe_conn_offload1 ofld_req1; 790 struct iscsi_kwqe_conn_offload2 ofld_req2; 791 struct iscsi_kwqe_conn_offload3 ofld_req3[1]; 792 dma_addr_t dma_addr; 793 int num_kwqes = 2; 794 u32 *ptbl; 795 796 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 797 ofld_req1.hdr.flags = 798 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 799 800 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 801 802 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; 803 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 804 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 805 806 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; 807 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 808 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 809 810 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 811 ofld_req2.hdr.flags = 812 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 813 814 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; 815 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 816 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 817 818 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 819 ofld_req2.sq_first_pte.hi = *ptbl++; 820 ofld_req2.sq_first_pte.lo = *ptbl; 821 822 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 823 ofld_req2.cq_first_pte.hi = *ptbl++; 824 ofld_req2.cq_first_pte.lo = *ptbl; 825 826 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 827 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 828 829 ofld_req2.num_additional_wqes = 1; 830 memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); 831 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 832 ofld_req3[0].qp_first_pte[0].hi = *ptbl++; 833 ofld_req3[0].qp_first_pte[0].lo = *ptbl; 834 835 kwqe_arr[2] = (struct kwqe *) ofld_req3; 836 /* need if we decide to go with multiple KCQE's per conn */ 837 num_kwqes += 1; 838 839 if (hba->cnic && hba->cnic->submit_kwqes) 840 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 841} 842 843/** 844 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process 845 * 846 * @hba: adapter structure pointer 847 * @ep: endpoint (transport indentifier) structure 848 * 849 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE 850 */ 851void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 852{ 853 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) 854 bnx2i_5771x_send_conn_ofld_req(hba, ep); 855 else 856 bnx2i_570x_send_conn_ofld_req(hba, ep); 857} 858 859 860/** 861 * setup_qp_page_tables - iscsi QP page table setup function 862 * @ep: endpoint (transport indentifier) structure 863 * 864 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires 865 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires 866 * PT in little endian format 867 */ 868static void setup_qp_page_tables(struct bnx2i_endpoint *ep) 869{ 870 int num_pages; 871 u32 *ptbl; 872 dma_addr_t page; 873 int cnic_dev_10g; 874 875 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 876 cnic_dev_10g = 1; 877 else 878 cnic_dev_10g = 0; 879 880 /* SQ page table */ 881 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); 882 num_pages = ep->qp.sq_mem_size / PAGE_SIZE; 883 page = ep->qp.sq_phys; 884 885 if (cnic_dev_10g) 886 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 887 else 888 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 889 while (num_pages--) { 890 if (cnic_dev_10g) { 891 /* PTE is written in little endian format for 57710 */ 892 *ptbl = (u32) page; 893 ptbl++; 894 *ptbl = (u32) ((u64) page >> 32); 895 ptbl++; 896 page += PAGE_SIZE; 897 } else { 898 /* PTE is written in big endian format for 899 * 5706/5708/5709 devices */ 900 *ptbl = (u32) ((u64) page >> 32); 901 ptbl++; 902 *ptbl = (u32) page; 903 ptbl++; 904 page += PAGE_SIZE; 905 } 906 } 907 908 /* RQ page table */ 909 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); 910 num_pages = ep->qp.rq_mem_size / PAGE_SIZE; 911 page = ep->qp.rq_phys; 912 913 if (cnic_dev_10g) 914 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 915 else 916 ptbl = (u32 *) ep->qp.rq_pgtbl_virt; 917 while (num_pages--) { 918 if (cnic_dev_10g) { 919 /* PTE is written in little endian format for 57710 */ 920 *ptbl = (u32) page; 921 ptbl++; 922 *ptbl = (u32) ((u64) page >> 32); 923 ptbl++; 924 page += PAGE_SIZE; 925 } else { 926 /* PTE is written in big endian format for 927 * 5706/5708/5709 devices */ 928 *ptbl = (u32) ((u64) page >> 32); 929 ptbl++; 930 *ptbl = (u32) page; 931 ptbl++; 932 page += PAGE_SIZE; 933 } 934 } 935 936 /* CQ page table */ 937 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); 938 num_pages = ep->qp.cq_mem_size / PAGE_SIZE; 939 page = ep->qp.cq_phys; 940 941 if (cnic_dev_10g) 942 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 943 else 944 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 945 while (num_pages--) { 946 if (cnic_dev_10g) { 947 /* PTE is written in little endian format for 57710 */ 948 *ptbl = (u32) page; 949 ptbl++; 950 *ptbl = (u32) ((u64) page >> 32); 951 ptbl++; 952 page += PAGE_SIZE; 953 } else { 954 /* PTE is written in big endian format for 955 * 5706/5708/5709 devices */ 956 *ptbl = (u32) ((u64) page >> 32); 957 ptbl++; 958 *ptbl = (u32) page; 959 ptbl++; 960 page += PAGE_SIZE; 961 } 962 } 963} 964 965 966/** 967 * bnx2i_alloc_qp_resc - allocates required resources for QP. 968 * @hba: adapter structure pointer 969 * @ep: endpoint (transport indentifier) structure 970 * 971 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able 972 * memory for SQ/RQ/CQ and page tables. EP structure elements such 973 * as producer/consumer indexes/pointers, queue sizes and page table 974 * contents are setup 975 */ 976int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 977{ 978 struct bnx2i_5771x_cq_db *cq_db; 979 980 ep->hba = hba; 981 ep->conn = NULL; 982 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; 983 984 /* Allocate page table memory for SQ which is page aligned */ 985 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; 986 ep->qp.sq_mem_size = 987 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 988 ep->qp.sq_pgtbl_size = 989 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); 990 ep->qp.sq_pgtbl_size = 991 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 992 993 ep->qp.sq_pgtbl_virt = 994 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 995 &ep->qp.sq_pgtbl_phys, GFP_KERNEL); 996 if (!ep->qp.sq_pgtbl_virt) { 997 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", 998 ep->qp.sq_pgtbl_size); 999 goto mem_alloc_err; 1000 } 1001 1002 /* Allocate memory area for actual SQ element */ 1003 ep->qp.sq_virt = 1004 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1005 &ep->qp.sq_phys, GFP_KERNEL); 1006 if (!ep->qp.sq_virt) { 1007 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", 1008 ep->qp.sq_mem_size); 1009 goto mem_alloc_err; 1010 } 1011 1012 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); 1013 ep->qp.sq_first_qe = ep->qp.sq_virt; 1014 ep->qp.sq_prod_qe = ep->qp.sq_first_qe; 1015 ep->qp.sq_cons_qe = ep->qp.sq_first_qe; 1016 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; 1017 ep->qp.sq_prod_idx = 0; 1018 ep->qp.sq_cons_idx = 0; 1019 ep->qp.sqe_left = hba->max_sqes; 1020 1021 /* Allocate page table memory for CQ which is page aligned */ 1022 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; 1023 ep->qp.cq_mem_size = 1024 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1025 ep->qp.cq_pgtbl_size = 1026 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); 1027 ep->qp.cq_pgtbl_size = 1028 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1029 1030 ep->qp.cq_pgtbl_virt = 1031 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1032 &ep->qp.cq_pgtbl_phys, GFP_KERNEL); 1033 if (!ep->qp.cq_pgtbl_virt) { 1034 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", 1035 ep->qp.cq_pgtbl_size); 1036 goto mem_alloc_err; 1037 } 1038 1039 /* Allocate memory area for actual CQ element */ 1040 ep->qp.cq_virt = 1041 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1042 &ep->qp.cq_phys, GFP_KERNEL); 1043 if (!ep->qp.cq_virt) { 1044 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", 1045 ep->qp.cq_mem_size); 1046 goto mem_alloc_err; 1047 } 1048 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); 1049 1050 ep->qp.cq_first_qe = ep->qp.cq_virt; 1051 ep->qp.cq_prod_qe = ep->qp.cq_first_qe; 1052 ep->qp.cq_cons_qe = ep->qp.cq_first_qe; 1053 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; 1054 ep->qp.cq_prod_idx = 0; 1055 ep->qp.cq_cons_idx = 0; 1056 ep->qp.cqe_left = hba->max_cqes; 1057 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1058 ep->qp.cqe_size = hba->max_cqes; 1059 1060 /* Invalidate all EQ CQE index, req only for 57710 */ 1061 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 1062 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); 1063 1064 /* Allocate page table memory for RQ which is page aligned */ 1065 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; 1066 ep->qp.rq_mem_size = 1067 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1068 ep->qp.rq_pgtbl_size = 1069 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); 1070 ep->qp.rq_pgtbl_size = 1071 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1072 1073 ep->qp.rq_pgtbl_virt = 1074 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1075 &ep->qp.rq_pgtbl_phys, GFP_KERNEL); 1076 if (!ep->qp.rq_pgtbl_virt) { 1077 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", 1078 ep->qp.rq_pgtbl_size); 1079 goto mem_alloc_err; 1080 } 1081 1082 /* Allocate memory area for actual RQ element */ 1083 ep->qp.rq_virt = 1084 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1085 &ep->qp.rq_phys, GFP_KERNEL); 1086 if (!ep->qp.rq_virt) { 1087 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", 1088 ep->qp.rq_mem_size); 1089 goto mem_alloc_err; 1090 } 1091 1092 ep->qp.rq_first_qe = ep->qp.rq_virt; 1093 ep->qp.rq_prod_qe = ep->qp.rq_first_qe; 1094 ep->qp.rq_cons_qe = ep->qp.rq_first_qe; 1095 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; 1096 ep->qp.rq_prod_idx = 0x8000; 1097 ep->qp.rq_cons_idx = 0; 1098 ep->qp.rqe_left = hba->max_rqes; 1099 1100 setup_qp_page_tables(ep); 1101 1102 return 0; 1103 1104mem_alloc_err: 1105 bnx2i_free_qp_resc(hba, ep); 1106 return -ENOMEM; 1107} 1108 1109 1110 1111/** 1112 * bnx2i_free_qp_resc - free memory resources held by QP 1113 * @hba: adapter structure pointer 1114 * @ep: endpoint (transport indentifier) structure 1115 * 1116 * Free QP resources - SQ/RQ/CQ memory and page tables. 1117 */ 1118void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1119{ 1120 if (ep->qp.ctx_base) { 1121 iounmap(ep->qp.ctx_base); 1122 ep->qp.ctx_base = NULL; 1123 } 1124 /* Free SQ mem */ 1125 if (ep->qp.sq_pgtbl_virt) { 1126 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1127 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); 1128 ep->qp.sq_pgtbl_virt = NULL; 1129 ep->qp.sq_pgtbl_phys = 0; 1130 } 1131 if (ep->qp.sq_virt) { 1132 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1133 ep->qp.sq_virt, ep->qp.sq_phys); 1134 ep->qp.sq_virt = NULL; 1135 ep->qp.sq_phys = 0; 1136 } 1137 1138 /* Free RQ mem */ 1139 if (ep->qp.rq_pgtbl_virt) { 1140 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1141 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); 1142 ep->qp.rq_pgtbl_virt = NULL; 1143 ep->qp.rq_pgtbl_phys = 0; 1144 } 1145 if (ep->qp.rq_virt) { 1146 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1147 ep->qp.rq_virt, ep->qp.rq_phys); 1148 ep->qp.rq_virt = NULL; 1149 ep->qp.rq_phys = 0; 1150 } 1151 1152 /* Free CQ mem */ 1153 if (ep->qp.cq_pgtbl_virt) { 1154 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1155 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); 1156 ep->qp.cq_pgtbl_virt = NULL; 1157 ep->qp.cq_pgtbl_phys = 0; 1158 } 1159 if (ep->qp.cq_virt) { 1160 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1161 ep->qp.cq_virt, ep->qp.cq_phys); 1162 ep->qp.cq_virt = NULL; 1163 ep->qp.cq_phys = 0; 1164 } 1165} 1166 1167 1168/** 1169 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w 1170 * @hba: adapter structure pointer 1171 * 1172 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w 1173 * This results in iSCSi support validation and on-chip context manager 1174 * initialization. Firmware completes this handshake with a CQE carrying 1175 * the result of iscsi support validation. Parameter carried by 1176 * iscsi init request determines the number of offloaded connection and 1177 * tolerance level for iscsi protocol violation this hba/chip can support 1178 */ 1179int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) 1180{ 1181 struct kwqe *kwqe_arr[3]; 1182 struct iscsi_kwqe_init1 iscsi_init; 1183 struct iscsi_kwqe_init2 iscsi_init2; 1184 int rc = 0; 1185 u64 mask64; 1186 1187 bnx2i_adjust_qp_size(hba); 1188 1189 iscsi_init.flags = 1190 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; 1191 if (en_tcp_dack) 1192 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; 1193 iscsi_init.reserved0 = 0; 1194 iscsi_init.num_cqs = 1; 1195 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; 1196 iscsi_init.hdr.flags = 1197 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1198 1199 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; 1200 iscsi_init.dummy_buffer_addr_hi = 1201 (u32) ((u64) hba->dummy_buf_dma >> 32); 1202 1203 hba->ctx_ccell_tasks = 1204 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); 1205 iscsi_init.num_ccells_per_conn = hba->num_ccell; 1206 iscsi_init.num_tasks_per_conn = hba->max_sqes; 1207 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 1208 iscsi_init.sq_num_wqes = hba->max_sqes; 1209 iscsi_init.cq_log_wqes_per_page = 1210 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); 1211 iscsi_init.cq_num_wqes = hba->max_cqes; 1212 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + 1213 (PAGE_SIZE - 1)) / PAGE_SIZE; 1214 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + 1215 (PAGE_SIZE - 1)) / PAGE_SIZE; 1216 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; 1217 iscsi_init.rq_num_wqes = hba->max_rqes; 1218 1219 1220 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; 1221 iscsi_init2.hdr.flags = 1222 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1223 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; 1224 mask64 = 0x0ULL; 1225 mask64 |= ( 1226 /* CISCO MDS */ 1227 (1UL << 1228 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | 1229 /* HP MSA1510i */ 1230 (1UL << 1231 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | 1232 /* EMC */ 1233 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); 1234 if (error_mask1) 1235 iscsi_init2.error_bit_map[0] = error_mask1; 1236 else 1237 iscsi_init2.error_bit_map[0] = (u32) mask64; 1238 1239 if (error_mask2) 1240 iscsi_init2.error_bit_map[1] = error_mask2; 1241 else 1242 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); 1243 1244 iscsi_error_mask = mask64; 1245 1246 kwqe_arr[0] = (struct kwqe *) &iscsi_init; 1247 kwqe_arr[1] = (struct kwqe *) &iscsi_init2; 1248 1249 if (hba->cnic && hba->cnic->submit_kwqes) 1250 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); 1251 return rc; 1252} 1253 1254 1255/** 1256 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. 1257 * @conn: iscsi connection 1258 * @cqe: pointer to newly DMA'ed CQE entry for processing 1259 * 1260 * process SCSI CMD Response CQE & complete the request to SCSI-ML 1261 */ 1262static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, 1263 struct bnx2i_conn *bnx2i_conn, 1264 struct cqe *cqe) 1265{ 1266 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1267 struct bnx2i_cmd_response *resp_cqe; 1268 struct bnx2i_cmd *bnx2i_cmd; 1269 struct iscsi_task *task; 1270 struct iscsi_cmd_rsp *hdr; 1271 u32 datalen = 0; 1272 1273 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1274 spin_lock(&session->lock); 1275 task = iscsi_itt_to_task(conn, 1276 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); 1277 if (!task) 1278 goto fail; 1279 1280 bnx2i_cmd = task->dd_data; 1281 1282 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { 1283 conn->datain_pdus_cnt += 1284 resp_cqe->task_stat.read_stat.num_data_outs; 1285 conn->rxdata_octets += 1286 bnx2i_cmd->req.total_data_transfer_length; 1287 } else { 1288 conn->dataout_pdus_cnt += 1289 resp_cqe->task_stat.read_stat.num_data_outs; 1290 conn->r2t_pdus_cnt += 1291 resp_cqe->task_stat.read_stat.num_r2ts; 1292 conn->txdata_octets += 1293 bnx2i_cmd->req.total_data_transfer_length; 1294 } 1295 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); 1296 1297 hdr = (struct iscsi_cmd_rsp *)task->hdr; 1298 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1299 hdr->opcode = resp_cqe->op_code; 1300 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); 1301 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); 1302 hdr->response = resp_cqe->response; 1303 hdr->cmd_status = resp_cqe->status; 1304 hdr->flags = resp_cqe->response_flags; 1305 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); 1306 1307 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) 1308 goto done; 1309 1310 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { 1311 datalen = resp_cqe->data_length; 1312 if (datalen < 2) 1313 goto done; 1314 1315 if (datalen > BNX2I_RQ_WQE_SIZE) { 1316 iscsi_conn_printk(KERN_ERR, conn, 1317 "sense data len %d > RQ sz\n", 1318 datalen); 1319 datalen = BNX2I_RQ_WQE_SIZE; 1320 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { 1321 iscsi_conn_printk(KERN_ERR, conn, 1322 "sense data len %d > conn data\n", 1323 datalen); 1324 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; 1325 } 1326 1327 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); 1328 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); 1329 } 1330 1331done: 1332 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 1333 conn->data, datalen); 1334fail: 1335 spin_unlock(&session->lock); 1336 return 0; 1337} 1338 1339 1340/** 1341 * bnx2i_process_login_resp - this function handles iscsi login response 1342 * @session: iscsi session pointer 1343 * @bnx2i_conn: iscsi connection pointer 1344 * @cqe: pointer to newly DMA'ed CQE entry for processing 1345 * 1346 * process Login Response CQE & complete it to open-iscsi user daemon 1347 */ 1348static int bnx2i_process_login_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 iscsi_task *task; 1354 struct bnx2i_login_response *login; 1355 struct iscsi_login_rsp *resp_hdr; 1356 int pld_len; 1357 int pad_len; 1358 1359 login = (struct bnx2i_login_response *) cqe; 1360 spin_lock(&session->lock); 1361 task = iscsi_itt_to_task(conn, 1362 login->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1363 if (!task) 1364 goto done; 1365 1366 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1367 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1368 resp_hdr->opcode = login->op_code; 1369 resp_hdr->flags = login->response_flags; 1370 resp_hdr->max_version = login->version_max; 1371 resp_hdr->active_version = login->version_active; 1372 resp_hdr->hlength = 0; 1373 1374 hton24(resp_hdr->dlength, login->data_length); 1375 memcpy(resp_hdr->isid, &login->isid_lo, 6); 1376 resp_hdr->tsih = cpu_to_be16(login->tsih); 1377 resp_hdr->itt = task->hdr->itt; 1378 resp_hdr->statsn = cpu_to_be32(login->stat_sn); 1379 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); 1380 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); 1381 resp_hdr->status_class = login->status_class; 1382 resp_hdr->status_detail = login->status_detail; 1383 pld_len = login->data_length; 1384 bnx2i_conn->gen_pdu.resp_wr_ptr = 1385 bnx2i_conn->gen_pdu.resp_buf + pld_len; 1386 1387 pad_len = 0; 1388 if (pld_len & 0x3) 1389 pad_len = 4 - (pld_len % 4); 1390 1391 if (pad_len) { 1392 int i = 0; 1393 for (i = 0; i < pad_len; i++) { 1394 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1395 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1396 } 1397 } 1398 1399 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1400 bnx2i_conn->gen_pdu.resp_buf, 1401 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); 1402done: 1403 spin_unlock(&session->lock); 1404 return 0; 1405} 1406 1407/** 1408 * bnx2i_process_tmf_resp - this function handles iscsi TMF response 1409 * @session: iscsi session pointer 1410 * @bnx2i_conn: iscsi connection pointer 1411 * @cqe: pointer to newly DMA'ed CQE entry for processing 1412 * 1413 * process iSCSI TMF Response CQE and wake up the driver eh thread. 1414 */ 1415static int bnx2i_process_tmf_resp(struct iscsi_session *session, 1416 struct bnx2i_conn *bnx2i_conn, 1417 struct cqe *cqe) 1418{ 1419 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1420 struct iscsi_task *task; 1421 struct bnx2i_tmf_response *tmf_cqe; 1422 struct iscsi_tm_rsp *resp_hdr; 1423 1424 tmf_cqe = (struct bnx2i_tmf_response *)cqe; 1425 spin_lock(&session->lock); 1426 task = iscsi_itt_to_task(conn, 1427 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); 1428 if (!task) 1429 goto done; 1430 1431 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1432 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1433 resp_hdr->opcode = tmf_cqe->op_code; 1434 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); 1435 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); 1436 resp_hdr->itt = task->hdr->itt; 1437 resp_hdr->response = tmf_cqe->response; 1438 1439 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1440done: 1441 spin_unlock(&session->lock); 1442 return 0; 1443} 1444 1445/** 1446 * bnx2i_process_logout_resp - this function handles iscsi logout response 1447 * @session: iscsi session pointer 1448 * @bnx2i_conn: iscsi connection pointer 1449 * @cqe: pointer to newly DMA'ed CQE entry for processing 1450 * 1451 * process iSCSI Logout Response CQE & make function call to 1452 * notify the user daemon. 1453 */ 1454static int bnx2i_process_logout_resp(struct iscsi_session *session, 1455 struct bnx2i_conn *bnx2i_conn, 1456 struct cqe *cqe) 1457{ 1458 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1459 struct iscsi_task *task; 1460 struct bnx2i_logout_response *logout; 1461 struct iscsi_logout_rsp *resp_hdr; 1462 1463 logout = (struct bnx2i_logout_response *) cqe; 1464 spin_lock(&session->lock); 1465 task = iscsi_itt_to_task(conn, 1466 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); 1467 if (!task) 1468 goto done; 1469 1470 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1471 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1472 resp_hdr->opcode = logout->op_code; 1473 resp_hdr->flags = logout->response; 1474 resp_hdr->hlength = 0; 1475 1476 resp_hdr->itt = task->hdr->itt; 1477 resp_hdr->statsn = task->hdr->exp_statsn; 1478 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); 1479 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); 1480 1481 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); 1482 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); 1483 1484 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1485done: 1486 spin_unlock(&session->lock); 1487 return 0; 1488} 1489 1490/** 1491 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE 1492 * @session: iscsi session pointer 1493 * @bnx2i_conn: iscsi connection pointer 1494 * @cqe: pointer to newly DMA'ed CQE entry for processing 1495 * 1496 * process iSCSI NOPIN local completion CQE, frees IIT and command structures 1497 */ 1498static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, 1499 struct bnx2i_conn *bnx2i_conn, 1500 struct cqe *cqe) 1501{ 1502 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1503 struct bnx2i_nop_in_msg *nop_in; 1504 struct iscsi_task *task; 1505 1506 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1507 spin_lock(&session->lock); 1508 task = iscsi_itt_to_task(conn, 1509 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); 1510 if (task) 1511 iscsi_put_task(task); 1512 spin_unlock(&session->lock); 1513} 1514 1515/** 1516 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd 1517 * @conn: iscsi connection 1518 * 1519 * Firmware advances RQ producer index for every unsolicited PDU even if 1520 * payload data length is '0'. This function makes corresponding 1521 * adjustments on the driver side to match this f/w behavior 1522 */ 1523static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) 1524{ 1525 char dummy_rq_data[2]; 1526 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); 1527 bnx2i_put_rq_buf(bnx2i_conn, 1); 1528} 1529 1530 1531/** 1532 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE 1533 * @session: iscsi session pointer 1534 * @bnx2i_conn: iscsi connection pointer 1535 * @cqe: pointer to newly DMA'ed CQE entry for processing 1536 * 1537 * process iSCSI target's proactive iSCSI NOPIN request 1538 */ 1539static int bnx2i_process_nopin_mesg(struct iscsi_session *session, 1540 struct bnx2i_conn *bnx2i_conn, 1541 struct cqe *cqe) 1542{ 1543 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1544 struct iscsi_task *task; 1545 struct bnx2i_nop_in_msg *nop_in; 1546 struct iscsi_nopin *hdr; 1547 u32 itt; 1548 int tgt_async_nop = 0; 1549 1550 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1551 itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX; 1552 1553 spin_lock(&session->lock); 1554 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; 1555 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1556 hdr->opcode = nop_in->op_code; 1557 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); 1558 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); 1559 hdr->ttt = cpu_to_be32(nop_in->ttt); 1560 1561 if (itt == (u16) RESERVED_ITT) { 1562 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1563 hdr->itt = RESERVED_ITT; 1564 tgt_async_nop = 1; 1565 goto done; 1566 } 1567 1568 /* this is a response to one of our nop-outs */ 1569 task = iscsi_itt_to_task(conn, itt); 1570 if (task) { 1571 hdr->flags = ISCSI_FLAG_CMD_FINAL; 1572 hdr->itt = task->hdr->itt; 1573 hdr->ttt = cpu_to_be32(nop_in->ttt); 1574 memcpy(hdr->lun, nop_in->lun, 8); 1575 } 1576done: 1577 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); 1578 spin_unlock(&session->lock); 1579 1580 return tgt_async_nop; 1581} 1582 1583 1584/** 1585 * bnx2i_process_async_mesg - this function handles iscsi async message 1586 * @session: iscsi session pointer 1587 * @bnx2i_conn: iscsi connection pointer 1588 * @cqe: pointer to newly DMA'ed CQE entry for processing 1589 * 1590 * process iSCSI ASYNC Message 1591 */ 1592static void bnx2i_process_async_mesg(struct iscsi_session *session, 1593 struct bnx2i_conn *bnx2i_conn, 1594 struct cqe *cqe) 1595{ 1596 struct bnx2i_async_msg *async_cqe; 1597 struct iscsi_async *resp_hdr; 1598 u8 async_event; 1599 1600 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1601 1602 async_cqe = (struct bnx2i_async_msg *)cqe; 1603 async_event = async_cqe->async_event; 1604 1605 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { 1606 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, 1607 "async: scsi events not supported\n"); 1608 return; 1609 } 1610 1611 spin_lock(&session->lock); 1612 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; 1613 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1614 resp_hdr->opcode = async_cqe->op_code; 1615 resp_hdr->flags = 0x80; 1616 1617 memcpy(resp_hdr->lun, async_cqe->lun, 8); 1618 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); 1619 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); 1620 1621 resp_hdr->async_event = async_cqe->async_event; 1622 resp_hdr->async_vcode = async_cqe->async_vcode; 1623 1624 resp_hdr->param1 = cpu_to_be16(async_cqe->param1); 1625 resp_hdr->param2 = cpu_to_be16(async_cqe->param2); 1626 resp_hdr->param3 = cpu_to_be16(async_cqe->param3); 1627 1628 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, 1629 (struct iscsi_hdr *)resp_hdr, NULL, 0); 1630 spin_unlock(&session->lock); 1631} 1632 1633 1634/** 1635 * bnx2i_process_reject_mesg - process iscsi reject pdu 1636 * @session: iscsi session pointer 1637 * @bnx2i_conn: iscsi connection pointer 1638 * @cqe: pointer to newly DMA'ed CQE entry for processing 1639 * 1640 * process iSCSI REJECT message 1641 */ 1642static void bnx2i_process_reject_mesg(struct iscsi_session *session, 1643 struct bnx2i_conn *bnx2i_conn, 1644 struct cqe *cqe) 1645{ 1646 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1647 struct bnx2i_reject_msg *reject; 1648 struct iscsi_reject *hdr; 1649 1650 reject = (struct bnx2i_reject_msg *) cqe; 1651 if (reject->data_length) { 1652 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); 1653 bnx2i_put_rq_buf(bnx2i_conn, 1); 1654 } else 1655 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1656 1657 spin_lock(&session->lock); 1658 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; 1659 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1660 hdr->opcode = reject->op_code; 1661 hdr->reason = reject->reason; 1662 hton24(hdr->dlength, reject->data_length); 1663 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); 1664 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); 1665 hdr->ffffffff = cpu_to_be32(RESERVED_ITT); 1666 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, 1667 reject->data_length); 1668 spin_unlock(&session->lock); 1669} 1670 1671/** 1672 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion 1673 * @session: iscsi session pointer 1674 * @bnx2i_conn: iscsi connection pointer 1675 * @cqe: pointer to newly DMA'ed CQE entry for processing 1676 * 1677 * process command cleanup response CQE during conn shutdown or error recovery 1678 */ 1679static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, 1680 struct bnx2i_conn *bnx2i_conn, 1681 struct cqe *cqe) 1682{ 1683 struct bnx2i_cleanup_response *cmd_clean_rsp; 1684 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1685 struct iscsi_task *task; 1686 1687 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; 1688 spin_lock(&session->lock); 1689 task = iscsi_itt_to_task(conn, 1690 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1691 if (!task) 1692 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", 1693 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1694 spin_unlock(&session->lock); 1695 complete(&bnx2i_conn->cmd_cleanup_cmpl); 1696} 1697 1698 1699 1700/** 1701 * bnx2i_process_new_cqes - process newly DMA'ed CQE's 1702 * @bnx2i_conn: iscsi connection 1703 * 1704 * this function is called by generic KCQ handler to process all pending CQE's 1705 */ 1706static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) 1707{ 1708 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1709 struct iscsi_session *session = conn->session; 1710 struct qp_info *qp = &bnx2i_conn->ep->qp; 1711 struct bnx2i_nop_in_msg *nopin; 1712 int tgt_async_msg; 1713 1714 while (1) { 1715 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; 1716 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) 1717 break; 1718 1719 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) 1720 break; 1721 1722 tgt_async_msg = 0; 1723 1724 switch (nopin->op_code) { 1725 case ISCSI_OP_SCSI_CMD_RSP: 1726 case ISCSI_OP_SCSI_DATA_IN: 1727 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, 1728 qp->cq_cons_qe); 1729 break; 1730 case ISCSI_OP_LOGIN_RSP: 1731 bnx2i_process_login_resp(session, bnx2i_conn, 1732 qp->cq_cons_qe); 1733 break; 1734 case ISCSI_OP_SCSI_TMFUNC_RSP: 1735 bnx2i_process_tmf_resp(session, bnx2i_conn, 1736 qp->cq_cons_qe); 1737 break; 1738 case ISCSI_OP_LOGOUT_RSP: 1739 bnx2i_process_logout_resp(session, bnx2i_conn, 1740 qp->cq_cons_qe); 1741 break; 1742 case ISCSI_OP_NOOP_IN: 1743 if (bnx2i_process_nopin_mesg(session, bnx2i_conn, 1744 qp->cq_cons_qe)) 1745 tgt_async_msg = 1; 1746 break; 1747 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: 1748 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, 1749 qp->cq_cons_qe); 1750 break; 1751 case ISCSI_OP_ASYNC_EVENT: 1752 bnx2i_process_async_mesg(session, bnx2i_conn, 1753 qp->cq_cons_qe); 1754 tgt_async_msg = 1; 1755 break; 1756 case ISCSI_OP_REJECT: 1757 bnx2i_process_reject_mesg(session, bnx2i_conn, 1758 qp->cq_cons_qe); 1759 break; 1760 case ISCSI_OPCODE_CLEANUP_RESPONSE: 1761 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, 1762 qp->cq_cons_qe); 1763 break; 1764 default: 1765 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 1766 nopin->op_code); 1767 } 1768 1769 if (!tgt_async_msg) 1770 bnx2i_conn->ep->num_active_cmds--; 1771 1772 /* clear out in production version only, till beta keep opcode 1773 * field intact, will be helpful in debugging (context dump) 1774 * nopin->op_code = 0; 1775 */ 1776 qp->cqe_exp_seq_sn++; 1777 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) 1778 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1779 1780 if (qp->cq_cons_qe == qp->cq_last_qe) { 1781 qp->cq_cons_qe = qp->cq_first_qe; 1782 qp->cq_cons_idx = 0; 1783 } else { 1784 qp->cq_cons_qe++; 1785 qp->cq_cons_idx++; 1786 } 1787 } 1788 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); 1789} 1790 1791/** 1792 * bnx2i_fastpath_notification - process global event queue (KCQ) 1793 * @hba: adapter structure pointer 1794 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry 1795 * 1796 * Fast path event notification handler, KCQ entry carries context id 1797 * of the connection that has 1 or more pending CQ entries 1798 */ 1799static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, 1800 struct iscsi_kcqe *new_cqe_kcqe) 1801{ 1802 struct bnx2i_conn *conn; 1803 u32 iscsi_cid; 1804 1805 iscsi_cid = new_cqe_kcqe->iscsi_conn_id; 1806 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1807 1808 if (!conn) { 1809 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); 1810 return; 1811 } 1812 if (!conn->ep) { 1813 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); 1814 return; 1815 } 1816 1817 bnx2i_process_new_cqes(conn); 1818} 1819 1820 1821/** 1822 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE 1823 * @hba: adapter structure pointer 1824 * @update_kcqe: kcqe pointer 1825 * 1826 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration 1827 */ 1828static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, 1829 struct iscsi_kcqe *update_kcqe) 1830{ 1831 struct bnx2i_conn *conn; 1832 u32 iscsi_cid; 1833 1834 iscsi_cid = update_kcqe->iscsi_conn_id; 1835 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1836 1837 if (!conn) { 1838 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); 1839 return; 1840 } 1841 if (!conn->ep) { 1842 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); 1843 return; 1844 } 1845 1846 if (update_kcqe->completion_status) { 1847 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); 1848 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; 1849 } else 1850 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; 1851 1852 wake_up_interruptible(&conn->ep->ofld_wait); 1853} 1854 1855 1856/** 1857 * bnx2i_recovery_que_add_conn - add connection to recovery queue 1858 * @hba: adapter structure pointer 1859 * @bnx2i_conn: iscsi connection 1860 * 1861 * Add connection to recovery queue and schedule adapter eh worker 1862 */ 1863static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, 1864 struct bnx2i_conn *bnx2i_conn) 1865{ 1866 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, 1867 ISCSI_ERR_CONN_FAILED); 1868} 1869 1870 1871/** 1872 * bnx2i_process_tcp_error - process error notification on a given connection 1873 * 1874 * @hba: adapter structure pointer 1875 * @tcp_err: tcp error kcqe pointer 1876 * 1877 * handles tcp level error notifications from FW. 1878 */ 1879static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, 1880 struct iscsi_kcqe *tcp_err) 1881{ 1882 struct bnx2i_conn *bnx2i_conn; 1883 u32 iscsi_cid; 1884 1885 iscsi_cid = tcp_err->iscsi_conn_id; 1886 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1887 1888 if (!bnx2i_conn) { 1889 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1890 return; 1891 } 1892 1893 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", 1894 iscsi_cid, tcp_err->completion_status); 1895 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 1896} 1897 1898 1899/** 1900 * bnx2i_process_iscsi_error - process error notification on a given connection 1901 * @hba: adapter structure pointer 1902 * @iscsi_err: iscsi error kcqe pointer 1903 * 1904 * handles iscsi error notifications from the FW. Firmware based in initial 1905 * handshake classifies iscsi protocol / TCP rfc violation into either 1906 * warning or error indications. If indication is of "Error" type, driver 1907 * will initiate session recovery for that connection/session. For 1908 * "Warning" type indication, driver will put out a system log message 1909 * (there will be only one message for each type for the life of the 1910 * session, this is to avoid un-necessarily overloading the system) 1911 */ 1912static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, 1913 struct iscsi_kcqe *iscsi_err) 1914{ 1915 struct bnx2i_conn *bnx2i_conn; 1916 u32 iscsi_cid; 1917 char warn_notice[] = "iscsi_warning"; 1918 char error_notice[] = "iscsi_error"; 1919 char additional_notice[64]; 1920 char *message; 1921 int need_recovery; 1922 u64 err_mask64; 1923 1924 iscsi_cid = iscsi_err->iscsi_conn_id; 1925 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1926 if (!bnx2i_conn) { 1927 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1928 return; 1929 } 1930 1931 err_mask64 = (0x1ULL << iscsi_err->completion_status); 1932 1933 if (err_mask64 & iscsi_error_mask) { 1934 need_recovery = 0; 1935 message = warn_notice; 1936 } else { 1937 need_recovery = 1; 1938 message = error_notice; 1939 } 1940 1941 switch (iscsi_err->completion_status) { 1942 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: 1943 strcpy(additional_notice, "hdr digest err"); 1944 break; 1945 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: 1946 strcpy(additional_notice, "data digest err"); 1947 break; 1948 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: 1949 strcpy(additional_notice, "wrong opcode rcvd"); 1950 break; 1951 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: 1952 strcpy(additional_notice, "AHS len > 0 rcvd"); 1953 break; 1954 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: 1955 strcpy(additional_notice, "invalid ITT rcvd"); 1956 break; 1957 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: 1958 strcpy(additional_notice, "wrong StatSN rcvd"); 1959 break; 1960 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: 1961 strcpy(additional_notice, "wrong DataSN rcvd"); 1962 break; 1963 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: 1964 strcpy(additional_notice, "pend R2T violation"); 1965 break; 1966 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: 1967 strcpy(additional_notice, "ERL0, UO"); 1968 break; 1969 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: 1970 strcpy(additional_notice, "ERL0, U1"); 1971 break; 1972 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: 1973 strcpy(additional_notice, "ERL0, U2"); 1974 break; 1975 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: 1976 strcpy(additional_notice, "ERL0, U3"); 1977 break; 1978 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: 1979 strcpy(additional_notice, "ERL0, U4"); 1980 break; 1981 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: 1982 strcpy(additional_notice, "ERL0, U5"); 1983 break; 1984 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: 1985 strcpy(additional_notice, "ERL0, U6"); 1986 break; 1987 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: 1988 strcpy(additional_notice, "invalid resi len"); 1989 break; 1990 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: 1991 strcpy(additional_notice, "MRDSL violation"); 1992 break; 1993 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: 1994 strcpy(additional_notice, "F-bit not set"); 1995 break; 1996 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: 1997 strcpy(additional_notice, "invalid TTT"); 1998 break; 1999 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: 2000 strcpy(additional_notice, "invalid DataSN"); 2001 break; 2002 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: 2003 strcpy(additional_notice, "burst len violation"); 2004 break; 2005 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: 2006 strcpy(additional_notice, "buf offset violation"); 2007 break; 2008 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: 2009 strcpy(additional_notice, "invalid LUN field"); 2010 break; 2011 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: 2012 strcpy(additional_notice, "invalid R2TSN field"); 2013 break; 2014#define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ 2015 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 2016 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: 2017 strcpy(additional_notice, "invalid cmd len1"); 2018 break; 2019#define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ 2020 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 2021 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: 2022 strcpy(additional_notice, "invalid cmd len2"); 2023 break; 2024 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: 2025 strcpy(additional_notice, 2026 "pend r2t exceeds MaxOutstandingR2T value"); 2027 break; 2028 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: 2029 strcpy(additional_notice, "TTT is rsvd"); 2030 break; 2031 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: 2032 strcpy(additional_notice, "MBL violation"); 2033 break; 2034#define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ 2035 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO 2036 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: 2037 strcpy(additional_notice, "data seg len != 0"); 2038 break; 2039 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: 2040 strcpy(additional_notice, "reject pdu len error"); 2041 break; 2042 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: 2043 strcpy(additional_notice, "async pdu len error"); 2044 break; 2045 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: 2046 strcpy(additional_notice, "nopin pdu len error"); 2047 break; 2048#define BNX2_ERR_PEND_R2T_IN_CLEANUP \ 2049 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP 2050 case BNX2_ERR_PEND_R2T_IN_CLEANUP: 2051 strcpy(additional_notice, "pend r2t in cleanup"); 2052 break; 2053 2054 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: 2055 strcpy(additional_notice, "IP fragments rcvd"); 2056 break; 2057 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: 2058 strcpy(additional_notice, "IP options error"); 2059 break; 2060 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: 2061 strcpy(additional_notice, "urgent flag error"); 2062 break; 2063 default: 2064 printk(KERN_ALERT "iscsi_err - unknown err %x\n", 2065 iscsi_err->completion_status); 2066 } 2067 2068 if (need_recovery) { 2069 iscsi_conn_printk(KERN_ALERT, 2070 bnx2i_conn->cls_conn->dd_data, 2071 "bnx2i: %s - %s\n", 2072 message, additional_notice); 2073 2074 iscsi_conn_printk(KERN_ALERT, 2075 bnx2i_conn->cls_conn->dd_data, 2076 "conn_err - hostno %d conn %p, " 2077 "iscsi_cid %x cid %x\n", 2078 bnx2i_conn->hba->shost->host_no, 2079 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, 2080 bnx2i_conn->ep->ep_cid); 2081 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2082 } else 2083 if (!test_and_set_bit(iscsi_err->completion_status, 2084 (void *) &bnx2i_conn->violation_notified)) 2085 iscsi_conn_printk(KERN_ALERT, 2086 bnx2i_conn->cls_conn->dd_data, 2087 "bnx2i: %s - %s\n", 2088 message, additional_notice); 2089} 2090 2091 2092/** 2093 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion 2094 * @hba: adapter structure pointer 2095 * @conn_destroy: conn destroy kcqe pointer 2096 * 2097 * handles connection destroy completion request. 2098 */ 2099static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, 2100 struct iscsi_kcqe *conn_destroy) 2101{ 2102 struct bnx2i_endpoint *ep; 2103 2104 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); 2105 if (!ep) { 2106 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " 2107 "offload request, unexpected complection\n"); 2108 return; 2109 } 2110 2111 if (hba != ep->hba) { 2112 printk(KERN_ALERT "conn destroy- error hba mis-match\n"); 2113 return; 2114 } 2115 2116 if (conn_destroy->completion_status) { 2117 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); 2118 ep->state = EP_STATE_CLEANUP_FAILED; 2119 } else 2120 ep->state = EP_STATE_CLEANUP_CMPL; 2121 wake_up_interruptible(&ep->ofld_wait); 2122} 2123 2124 2125/** 2126 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion 2127 * @hba: adapter structure pointer 2128 * @ofld_kcqe: conn offload kcqe pointer 2129 * 2130 * handles initial connection offload completion, ep_connect() thread is 2131 * woken-up to continue with LLP connect process 2132 */ 2133static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, 2134 struct iscsi_kcqe *ofld_kcqe) 2135{ 2136 u32 cid_addr; 2137 struct bnx2i_endpoint *ep; 2138 u32 cid_num; 2139 2140 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); 2141 if (!ep) { 2142 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); 2143 return; 2144 } 2145 2146 if (hba != ep->hba) { 2147 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); 2148 return; 2149 } 2150 2151 if (ofld_kcqe->completion_status) { 2152 if (ofld_kcqe->completion_status == 2153 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) 2154 printk(KERN_ALERT "bnx2i: unable to allocate" 2155 " iSCSI context resources\n"); 2156 ep->state = EP_STATE_OFLD_FAILED; 2157 } else { 2158 ep->state = EP_STATE_OFLD_COMPL; 2159 cid_addr = ofld_kcqe->iscsi_conn_context_id; 2160 cid_num = bnx2i_get_cid_num(ep); 2161 ep->ep_cid = cid_addr; 2162 ep->qp.ctx_base = NULL; 2163 } 2164 wake_up_interruptible(&ep->ofld_wait); 2165} 2166 2167/** 2168 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE 2169 * @hba: adapter structure pointer 2170 * @update_kcqe: kcqe pointer 2171 * 2172 * Generic KCQ event handler/dispatcher 2173 */ 2174static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], 2175 u32 num_cqe) 2176{ 2177 struct bnx2i_hba *hba = context; 2178 int i = 0; 2179 struct iscsi_kcqe *ikcqe = NULL; 2180 2181 while (i < num_cqe) { 2182 ikcqe = (struct iscsi_kcqe *) kcqe[i++]; 2183 2184 if (ikcqe->op_code == 2185 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) 2186 bnx2i_fastpath_notification(hba, ikcqe); 2187 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) 2188 bnx2i_process_ofld_cmpl(hba, ikcqe); 2189 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) 2190 bnx2i_process_update_conn_cmpl(hba, ikcqe); 2191 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { 2192 if (ikcqe->completion_status != 2193 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) 2194 bnx2i_iscsi_license_error(hba, ikcqe->\ 2195 completion_status); 2196 else { 2197 set_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2198 bnx2i_get_link_state(hba); 2199 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " 2200 "ISCSI_INIT passed\n", 2201 (u8)hba->pcidev->bus->number, 2202 hba->pci_devno, 2203 (u8)hba->pci_func); 2204 2205 2206 } 2207 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) 2208 bnx2i_process_conn_destroy_cmpl(hba, ikcqe); 2209 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) 2210 bnx2i_process_iscsi_error(hba, ikcqe); 2211 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) 2212 bnx2i_process_tcp_error(hba, ikcqe); 2213 else 2214 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 2215 ikcqe->op_code); 2216 } 2217} 2218 2219 2220/** 2221 * bnx2i_indicate_netevent - Generic netdev event handler 2222 * @context: adapter structure pointer 2223 * @event: event type 2224 * 2225 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, 2226 * NETDEV_GOING_DOWN and NETDEV_CHANGE 2227 */ 2228static void bnx2i_indicate_netevent(void *context, unsigned long event) 2229{ 2230 struct bnx2i_hba *hba = context; 2231 2232 switch (event) { 2233 case NETDEV_UP: 2234 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 2235 bnx2i_send_fw_iscsi_init_msg(hba); 2236 break; 2237 case NETDEV_DOWN: 2238 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2239 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2240 break; 2241 case NETDEV_GOING_DOWN: 2242 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2243 iscsi_host_for_each_session(hba->shost, 2244 bnx2i_drop_session); 2245 break; 2246 case NETDEV_CHANGE: 2247 bnx2i_get_link_state(hba); 2248 break; 2249 default: 2250 ; 2251 } 2252} 2253 2254 2255/** 2256 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion 2257 * @cm_sk: cnic sock structure pointer 2258 * 2259 * function callback exported via bnx2i - cnic driver interface to 2260 * indicate completion of option-2 TCP connect request. 2261 */ 2262static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) 2263{ 2264 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2265 2266 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) 2267 ep->state = EP_STATE_CONNECT_FAILED; 2268 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) 2269 ep->state = EP_STATE_CONNECT_COMPL; 2270 else 2271 ep->state = EP_STATE_CONNECT_FAILED; 2272 2273 wake_up_interruptible(&ep->ofld_wait); 2274} 2275 2276 2277/** 2278 * bnx2i_cm_close_cmpl - process tcp conn close completion 2279 * @cm_sk: cnic sock structure pointer 2280 * 2281 * function callback exported via bnx2i - cnic driver interface to 2282 * indicate completion of option-2 graceful TCP connect shutdown 2283 */ 2284static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) 2285{ 2286 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2287 2288 ep->state = EP_STATE_DISCONN_COMPL; 2289 wake_up_interruptible(&ep->ofld_wait); 2290} 2291 2292 2293/** 2294 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion 2295 * @cm_sk: cnic sock structure pointer 2296 * 2297 * function callback exported via bnx2i - cnic driver interface to 2298 * indicate completion of option-2 abortive TCP connect termination 2299 */ 2300static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) 2301{ 2302 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2303 2304 ep->state = EP_STATE_DISCONN_COMPL; 2305 wake_up_interruptible(&ep->ofld_wait); 2306} 2307 2308 2309/** 2310 * bnx2i_cm_remote_close - process received TCP FIN 2311 * @hba: adapter structure pointer 2312 * @update_kcqe: kcqe pointer 2313 * 2314 * function callback exported via bnx2i - cnic driver interface to indicate 2315 * async TCP events such as FIN 2316 */ 2317static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) 2318{ 2319 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2320 2321 ep->state = EP_STATE_TCP_FIN_RCVD; 2322 if (ep->conn) 2323 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2324} 2325 2326/** 2327 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup 2328 * @hba: adapter structure pointer 2329 * @update_kcqe: kcqe pointer 2330 * 2331 * function callback exported via bnx2i - cnic driver interface to 2332 * indicate async TCP events (RST) sent by the peer. 2333 */ 2334static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) 2335{ 2336 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2337 2338 ep->state = EP_STATE_TCP_RST_RCVD; 2339 if (ep->conn) 2340 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2341} 2342 2343 2344static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type, 2345 char *buf, u16 buflen) 2346{ 2347 struct bnx2i_hba *hba; 2348 2349 hba = bnx2i_find_hba_for_cnic(dev); 2350 if (!hba) 2351 return; 2352 2353 if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, 2354 msg_type, buf, buflen)) 2355 printk(KERN_ALERT "bnx2i: private nl message send error\n"); 2356 2357} 2358 2359 2360/** 2361 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure 2362 * carrying callback function pointers 2363 * 2364 */ 2365struct cnic_ulp_ops bnx2i_cnic_cb = { 2366 .cnic_init = bnx2i_ulp_init, 2367 .cnic_exit = bnx2i_ulp_exit, 2368 .cnic_start = bnx2i_start, 2369 .cnic_stop = bnx2i_stop, 2370 .indicate_kcqes = bnx2i_indicate_kcqe, 2371 .indicate_netevent = bnx2i_indicate_netevent, 2372 .cm_connect_complete = bnx2i_cm_connect_cmpl, 2373 .cm_close_complete = bnx2i_cm_close_cmpl, 2374 .cm_abort_complete = bnx2i_cm_abort_cmpl, 2375 .cm_remote_close = bnx2i_cm_remote_close, 2376 .cm_remote_abort = bnx2i_cm_remote_abort, 2377 .iscsi_nl_send_msg = bnx2i_send_nl_mesg, 2378 .owner = THIS_MODULE 2379}; 2380 2381 2382/** 2383 * bnx2i_map_ep_dbell_regs - map connection doorbell registers 2384 * @ep: bnx2i endpoint 2385 * 2386 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these 2387 * register in BAR #0. Whereas in 57710 these register are accessed by 2388 * mapping BAR #1 2389 */ 2390int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) 2391{ 2392 u32 cid_num; 2393 u32 reg_off; 2394 u32 first_l4l5; 2395 u32 ctx_sz; 2396 u32 config2; 2397 resource_size_t reg_base; 2398 2399 cid_num = bnx2i_get_cid_num(ep); 2400 2401 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 2402 reg_base = pci_resource_start(ep->hba->pcidev, 2403 BNX2X_DOORBELL_PCI_BAR); 2404 reg_off = PAGE_SIZE * (cid_num & 0x1FFFF) + DPM_TRIGER_TYPE; 2405 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); 2406 goto arm_cq; 2407 } 2408 2409 reg_base = ep->hba->netdev->base_addr; 2410 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && 2411 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { 2412 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); 2413 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; 2414 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; 2415 if (ctx_sz) 2416 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE 2417 + BNX2I_570X_PAGE_SIZE_DEFAULT * 2418 (((cid_num - first_l4l5) / ctx_sz) + 256); 2419 else 2420 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2421 } else 2422 /* 5709 device in normal node and 5706/5708 devices */ 2423 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2424 2425 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 2426 MB_KERNEL_CTX_SIZE); 2427 if (!ep->qp.ctx_base) 2428 return -ENOMEM; 2429 2430arm_cq: 2431 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); 2432 return 0; 2433} 2434