bnx2i_hwi.c revision 939b82e5bde56a98c72eccde2e3a88d32bffad4a
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; 388 389 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; 390 tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; 391 tmfabort_wqe = (struct bnx2i_tmf_request *) 392 bnx2i_conn->ep->qp.sq_prod_qe; 393 394 tmfabort_wqe->op_code = tmfabort_hdr->opcode; 395 tmfabort_wqe->op_attr = tmfabort_hdr->flags; 396 397 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); 398 tmfabort_wqe->reserved2 = 0; 399 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); 400 401 switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { 402 case ISCSI_TM_FUNC_ABORT_TASK: 403 case ISCSI_TM_FUNC_TASK_REASSIGN: 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 408 * was starting up. 409 * 410 * Note: In the case of a SCSI cmd timeout, the task's 411 * sc 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 if (ref_sc->sc_data_direction == DMA_TO_DEVICE) 418 dword = (ISCSI_TASK_TYPE_WRITE << 419 ISCSI_CMD_REQUEST_TYPE_SHIFT); 420 else 421 dword = (ISCSI_TASK_TYPE_READ << 422 ISCSI_CMD_REQUEST_TYPE_SHIFT); 423 tmfabort_wqe->ref_itt = (dword | 424 (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); 425 break; 426 default: 427 tmfabort_wqe->ref_itt = RESERVED_ITT; 428 } 429 memcpy(tmfabort_wqe->lun, tmfabort_hdr->lun, sizeof(struct scsi_lun)); 430 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); 431 432 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 433 tmfabort_wqe->bd_list_addr_hi = (u32) 434 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 435 tmfabort_wqe->num_bds = 1; 436 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 437 438 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 439 return 0; 440} 441 442/** 443 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware 444 * @conn: iscsi connection 445 * @cmd: driver command structure which is requesting 446 * a WQE to sent to chip for further processing 447 * 448 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware 449 */ 450int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, 451 struct bnx2i_cmd *cmd) 452{ 453 struct bnx2i_cmd_request *scsi_cmd_wqe; 454 455 scsi_cmd_wqe = (struct bnx2i_cmd_request *) 456 bnx2i_conn->ep->qp.sq_prod_qe; 457 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); 458 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 459 460 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 461 return 0; 462} 463 464/** 465 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware 466 * @conn: iscsi connection 467 * @cmd: driver command structure which is requesting 468 * a WQE to sent to chip for further processing 469 * @datap: payload buffer pointer 470 * @data_len: payload data length 471 * @unsol: indicated whether nopout pdu is unsolicited pdu or 472 * in response to target's NOPIN w/ TTT != FFFFFFFF 473 * 474 * prepare and post a nopout request WQE to CNIC firmware 475 */ 476int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, 477 struct iscsi_task *task, 478 char *datap, int data_len, int unsol) 479{ 480 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 481 struct bnx2i_cmd *bnx2i_cmd; 482 struct bnx2i_nop_out_request *nopout_wqe; 483 struct iscsi_nopout *nopout_hdr; 484 485 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 486 nopout_hdr = (struct iscsi_nopout *)task->hdr; 487 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; 488 nopout_wqe->op_code = nopout_hdr->opcode; 489 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; 490 memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); 491 492 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 493 u32 tmp = nopout_hdr->lun[0]; 494 /* 57710 requires LUN field to be swapped */ 495 nopout_hdr->lun[0] = nopout_hdr->lun[1]; 496 nopout_hdr->lun[1] = tmp; 497 } 498 499 nopout_wqe->itt = ((u16)task->itt | 500 (ISCSI_TASK_TYPE_MPATH << 501 ISCSI_TMF_REQUEST_TYPE_SHIFT)); 502 nopout_wqe->ttt = nopout_hdr->ttt; 503 nopout_wqe->flags = 0; 504 if (!unsol) 505 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 506 else if (nopout_hdr->itt == RESERVED_ITT) 507 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 508 509 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 510 nopout_wqe->data_length = data_len; 511 if (data_len) { 512 /* handle payload data, not required in first release */ 513 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); 514 } else { 515 nopout_wqe->bd_list_addr_lo = (u32) 516 bnx2i_conn->hba->mp_bd_dma; 517 nopout_wqe->bd_list_addr_hi = 518 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 519 nopout_wqe->num_bds = 1; 520 } 521 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 522 523 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 524 return 0; 525} 526 527 528/** 529 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware 530 * @conn: iscsi connection 531 * @cmd: driver command structure which is requesting 532 * a WQE to sent to chip for further processing 533 * 534 * prepare and post logout request WQE to CNIC firmware 535 */ 536int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, 537 struct iscsi_task *task) 538{ 539 struct bnx2i_cmd *bnx2i_cmd; 540 struct bnx2i_logout_request *logout_wqe; 541 struct iscsi_logout *logout_hdr; 542 543 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 544 logout_hdr = (struct iscsi_logout *)task->hdr; 545 546 logout_wqe = (struct bnx2i_logout_request *) 547 bnx2i_conn->ep->qp.sq_prod_qe; 548 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); 549 550 logout_wqe->op_code = logout_hdr->opcode; 551 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 552 logout_wqe->op_attr = 553 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; 554 logout_wqe->itt = ((u16)task->itt | 555 (ISCSI_TASK_TYPE_MPATH << 556 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); 557 logout_wqe->data_length = 0; 558 logout_wqe->cid = 0; 559 560 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 561 logout_wqe->bd_list_addr_hi = (u32) 562 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 563 logout_wqe->num_bds = 1; 564 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 565 566 bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT; 567 568 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 569 return 0; 570} 571 572 573/** 574 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware 575 * @conn: iscsi connection which requires iscsi parameter update 576 * 577 * sends down iSCSI Conn Update request to move iSCSI conn to FFP 578 */ 579void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) 580{ 581 struct bnx2i_conn *bnx2i_conn = conn->dd_data; 582 struct bnx2i_hba *hba = bnx2i_conn->hba; 583 struct kwqe *kwqe_arr[2]; 584 struct iscsi_kwqe_conn_update *update_wqe; 585 struct iscsi_kwqe_conn_update conn_update_kwqe; 586 587 update_wqe = &conn_update_kwqe; 588 589 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; 590 update_wqe->hdr.flags = 591 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 592 593 /* 5771x requires conn context id to be passed as is */ 594 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) 595 update_wqe->context_id = bnx2i_conn->ep->ep_cid; 596 else 597 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); 598 update_wqe->conn_flags = 0; 599 if (conn->hdrdgst_en) 600 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; 601 if (conn->datadgst_en) 602 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; 603 if (conn->session->initial_r2t_en) 604 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; 605 if (conn->session->imm_data_en) 606 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; 607 608 update_wqe->max_send_pdu_length = conn->max_xmit_dlength; 609 update_wqe->max_recv_pdu_length = conn->max_recv_dlength; 610 update_wqe->first_burst_length = conn->session->first_burst; 611 update_wqe->max_burst_length = conn->session->max_burst; 612 update_wqe->exp_stat_sn = conn->exp_statsn; 613 update_wqe->max_outstanding_r2ts = conn->session->max_r2t; 614 update_wqe->session_error_recovery_level = conn->session->erl; 615 iscsi_conn_printk(KERN_ALERT, conn, 616 "bnx2i: conn update - MBL 0x%x FBL 0x%x" 617 "MRDSL_I 0x%x MRDSL_T 0x%x \n", 618 update_wqe->max_burst_length, 619 update_wqe->first_burst_length, 620 update_wqe->max_recv_pdu_length, 621 update_wqe->max_send_pdu_length); 622 623 kwqe_arr[0] = (struct kwqe *) update_wqe; 624 if (hba->cnic && hba->cnic->submit_kwqes) 625 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 626} 627 628 629/** 630 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware 631 * @data: endpoint (transport handle) structure pointer 632 * 633 * routine to handle connection offload/destroy request timeout 634 */ 635void bnx2i_ep_ofld_timer(unsigned long data) 636{ 637 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; 638 639 if (ep->state == EP_STATE_OFLD_START) { 640 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); 641 ep->state = EP_STATE_OFLD_FAILED; 642 } else if (ep->state == EP_STATE_DISCONN_START) { 643 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); 644 ep->state = EP_STATE_DISCONN_TIMEDOUT; 645 } else if (ep->state == EP_STATE_CLEANUP_START) { 646 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); 647 ep->state = EP_STATE_CLEANUP_FAILED; 648 } 649 650 wake_up_interruptible(&ep->ofld_wait); 651} 652 653 654static int bnx2i_power_of2(u32 val) 655{ 656 u32 power = 0; 657 if (val & (val - 1)) 658 return power; 659 val--; 660 while (val) { 661 val = val >> 1; 662 power++; 663 } 664 return power; 665} 666 667 668/** 669 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request 670 * @hba: adapter structure pointer 671 * @cmd: driver command structure which is requesting 672 * a WQE to sent to chip for further processing 673 * 674 * prepares and posts CONN_OFLD_REQ1/2 KWQE 675 */ 676void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) 677{ 678 struct bnx2i_cleanup_request *cmd_cleanup; 679 680 cmd_cleanup = 681 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; 682 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); 683 684 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; 685 cmd_cleanup->itt = cmd->req.itt; 686 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ 687 688 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); 689} 690 691 692/** 693 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process 694 * @hba: adapter structure pointer 695 * @ep: endpoint (transport indentifier) structure 696 * 697 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate 698 * iscsi connection context clean-up process 699 */ 700void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 701{ 702 struct kwqe *kwqe_arr[2]; 703 struct iscsi_kwqe_conn_destroy conn_cleanup; 704 705 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); 706 707 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; 708 conn_cleanup.hdr.flags = 709 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 710 /* 5771x requires conn context id to be passed as is */ 711 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 712 conn_cleanup.context_id = ep->ep_cid; 713 else 714 conn_cleanup.context_id = (ep->ep_cid >> 7); 715 716 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; 717 718 kwqe_arr[0] = (struct kwqe *) &conn_cleanup; 719 if (hba->cnic && hba->cnic->submit_kwqes) 720 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 721} 722 723 724/** 725 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process 726 * @hba: adapter structure pointer 727 * @ep: endpoint (transport indentifier) structure 728 * 729 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 730 */ 731static void bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, 732 struct bnx2i_endpoint *ep) 733{ 734 struct kwqe *kwqe_arr[2]; 735 struct iscsi_kwqe_conn_offload1 ofld_req1; 736 struct iscsi_kwqe_conn_offload2 ofld_req2; 737 dma_addr_t dma_addr; 738 int num_kwqes = 2; 739 u32 *ptbl; 740 741 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 742 ofld_req1.hdr.flags = 743 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 744 745 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 746 747 dma_addr = ep->qp.sq_pgtbl_phys; 748 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 749 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 750 751 dma_addr = ep->qp.cq_pgtbl_phys; 752 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 753 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 754 755 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 756 ofld_req2.hdr.flags = 757 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 758 759 dma_addr = ep->qp.rq_pgtbl_phys; 760 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 761 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 762 763 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 764 765 ofld_req2.sq_first_pte.hi = *ptbl++; 766 ofld_req2.sq_first_pte.lo = *ptbl; 767 768 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 769 ofld_req2.cq_first_pte.hi = *ptbl++; 770 ofld_req2.cq_first_pte.lo = *ptbl; 771 772 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 773 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 774 ofld_req2.num_additional_wqes = 0; 775 776 if (hba->cnic && hba->cnic->submit_kwqes) 777 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 778} 779 780 781/** 782 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation 783 * @hba: adapter structure pointer 784 * @ep: endpoint (transport indentifier) structure 785 * 786 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 787 */ 788static void bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, 789 struct bnx2i_endpoint *ep) 790{ 791 struct kwqe *kwqe_arr[5]; 792 struct iscsi_kwqe_conn_offload1 ofld_req1; 793 struct iscsi_kwqe_conn_offload2 ofld_req2; 794 struct iscsi_kwqe_conn_offload3 ofld_req3[1]; 795 dma_addr_t dma_addr; 796 int num_kwqes = 2; 797 u32 *ptbl; 798 799 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 800 ofld_req1.hdr.flags = 801 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 802 803 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 804 805 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; 806 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 807 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 808 809 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; 810 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 811 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 812 813 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 814 ofld_req2.hdr.flags = 815 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 816 817 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; 818 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 819 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 820 821 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 822 ofld_req2.sq_first_pte.hi = *ptbl++; 823 ofld_req2.sq_first_pte.lo = *ptbl; 824 825 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 826 ofld_req2.cq_first_pte.hi = *ptbl++; 827 ofld_req2.cq_first_pte.lo = *ptbl; 828 829 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 830 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 831 832 ofld_req2.num_additional_wqes = 1; 833 memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); 834 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 835 ofld_req3[0].qp_first_pte[0].hi = *ptbl++; 836 ofld_req3[0].qp_first_pte[0].lo = *ptbl; 837 838 kwqe_arr[2] = (struct kwqe *) ofld_req3; 839 /* need if we decide to go with multiple KCQE's per conn */ 840 num_kwqes += 1; 841 842 if (hba->cnic && hba->cnic->submit_kwqes) 843 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 844} 845 846/** 847 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process 848 * 849 * @hba: adapter structure pointer 850 * @ep: endpoint (transport indentifier) structure 851 * 852 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE 853 */ 854void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 855{ 856 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) 857 bnx2i_5771x_send_conn_ofld_req(hba, ep); 858 else 859 bnx2i_570x_send_conn_ofld_req(hba, ep); 860} 861 862 863/** 864 * setup_qp_page_tables - iscsi QP page table setup function 865 * @ep: endpoint (transport indentifier) structure 866 * 867 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires 868 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires 869 * PT in little endian format 870 */ 871static void setup_qp_page_tables(struct bnx2i_endpoint *ep) 872{ 873 int num_pages; 874 u32 *ptbl; 875 dma_addr_t page; 876 int cnic_dev_10g; 877 878 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 879 cnic_dev_10g = 1; 880 else 881 cnic_dev_10g = 0; 882 883 /* SQ page table */ 884 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); 885 num_pages = ep->qp.sq_mem_size / PAGE_SIZE; 886 page = ep->qp.sq_phys; 887 888 if (cnic_dev_10g) 889 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 890 else 891 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 892 while (num_pages--) { 893 if (cnic_dev_10g) { 894 /* PTE is written in little endian format for 57710 */ 895 *ptbl = (u32) page; 896 ptbl++; 897 *ptbl = (u32) ((u64) page >> 32); 898 ptbl++; 899 page += PAGE_SIZE; 900 } else { 901 /* PTE is written in big endian format for 902 * 5706/5708/5709 devices */ 903 *ptbl = (u32) ((u64) page >> 32); 904 ptbl++; 905 *ptbl = (u32) page; 906 ptbl++; 907 page += PAGE_SIZE; 908 } 909 } 910 911 /* RQ page table */ 912 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); 913 num_pages = ep->qp.rq_mem_size / PAGE_SIZE; 914 page = ep->qp.rq_phys; 915 916 if (cnic_dev_10g) 917 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 918 else 919 ptbl = (u32 *) ep->qp.rq_pgtbl_virt; 920 while (num_pages--) { 921 if (cnic_dev_10g) { 922 /* PTE is written in little endian format for 57710 */ 923 *ptbl = (u32) page; 924 ptbl++; 925 *ptbl = (u32) ((u64) page >> 32); 926 ptbl++; 927 page += PAGE_SIZE; 928 } else { 929 /* PTE is written in big endian format for 930 * 5706/5708/5709 devices */ 931 *ptbl = (u32) ((u64) page >> 32); 932 ptbl++; 933 *ptbl = (u32) page; 934 ptbl++; 935 page += PAGE_SIZE; 936 } 937 } 938 939 /* CQ page table */ 940 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); 941 num_pages = ep->qp.cq_mem_size / PAGE_SIZE; 942 page = ep->qp.cq_phys; 943 944 if (cnic_dev_10g) 945 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 946 else 947 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 948 while (num_pages--) { 949 if (cnic_dev_10g) { 950 /* PTE is written in little endian format for 57710 */ 951 *ptbl = (u32) page; 952 ptbl++; 953 *ptbl = (u32) ((u64) page >> 32); 954 ptbl++; 955 page += PAGE_SIZE; 956 } else { 957 /* PTE is written in big endian format for 958 * 5706/5708/5709 devices */ 959 *ptbl = (u32) ((u64) page >> 32); 960 ptbl++; 961 *ptbl = (u32) page; 962 ptbl++; 963 page += PAGE_SIZE; 964 } 965 } 966} 967 968 969/** 970 * bnx2i_alloc_qp_resc - allocates required resources for QP. 971 * @hba: adapter structure pointer 972 * @ep: endpoint (transport indentifier) structure 973 * 974 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able 975 * memory for SQ/RQ/CQ and page tables. EP structure elements such 976 * as producer/consumer indexes/pointers, queue sizes and page table 977 * contents are setup 978 */ 979int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 980{ 981 struct bnx2i_5771x_cq_db *cq_db; 982 983 ep->hba = hba; 984 ep->conn = NULL; 985 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; 986 987 /* Allocate page table memory for SQ which is page aligned */ 988 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; 989 ep->qp.sq_mem_size = 990 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 991 ep->qp.sq_pgtbl_size = 992 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); 993 ep->qp.sq_pgtbl_size = 994 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 995 996 ep->qp.sq_pgtbl_virt = 997 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 998 &ep->qp.sq_pgtbl_phys, GFP_KERNEL); 999 if (!ep->qp.sq_pgtbl_virt) { 1000 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", 1001 ep->qp.sq_pgtbl_size); 1002 goto mem_alloc_err; 1003 } 1004 1005 /* Allocate memory area for actual SQ element */ 1006 ep->qp.sq_virt = 1007 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1008 &ep->qp.sq_phys, GFP_KERNEL); 1009 if (!ep->qp.sq_virt) { 1010 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", 1011 ep->qp.sq_mem_size); 1012 goto mem_alloc_err; 1013 } 1014 1015 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); 1016 ep->qp.sq_first_qe = ep->qp.sq_virt; 1017 ep->qp.sq_prod_qe = ep->qp.sq_first_qe; 1018 ep->qp.sq_cons_qe = ep->qp.sq_first_qe; 1019 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; 1020 ep->qp.sq_prod_idx = 0; 1021 ep->qp.sq_cons_idx = 0; 1022 ep->qp.sqe_left = hba->max_sqes; 1023 1024 /* Allocate page table memory for CQ which is page aligned */ 1025 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; 1026 ep->qp.cq_mem_size = 1027 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1028 ep->qp.cq_pgtbl_size = 1029 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); 1030 ep->qp.cq_pgtbl_size = 1031 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1032 1033 ep->qp.cq_pgtbl_virt = 1034 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1035 &ep->qp.cq_pgtbl_phys, GFP_KERNEL); 1036 if (!ep->qp.cq_pgtbl_virt) { 1037 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", 1038 ep->qp.cq_pgtbl_size); 1039 goto mem_alloc_err; 1040 } 1041 1042 /* Allocate memory area for actual CQ element */ 1043 ep->qp.cq_virt = 1044 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1045 &ep->qp.cq_phys, GFP_KERNEL); 1046 if (!ep->qp.cq_virt) { 1047 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", 1048 ep->qp.cq_mem_size); 1049 goto mem_alloc_err; 1050 } 1051 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); 1052 1053 ep->qp.cq_first_qe = ep->qp.cq_virt; 1054 ep->qp.cq_prod_qe = ep->qp.cq_first_qe; 1055 ep->qp.cq_cons_qe = ep->qp.cq_first_qe; 1056 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; 1057 ep->qp.cq_prod_idx = 0; 1058 ep->qp.cq_cons_idx = 0; 1059 ep->qp.cqe_left = hba->max_cqes; 1060 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1061 ep->qp.cqe_size = hba->max_cqes; 1062 1063 /* Invalidate all EQ CQE index, req only for 57710 */ 1064 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 1065 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); 1066 1067 /* Allocate page table memory for RQ which is page aligned */ 1068 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; 1069 ep->qp.rq_mem_size = 1070 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1071 ep->qp.rq_pgtbl_size = 1072 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); 1073 ep->qp.rq_pgtbl_size = 1074 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1075 1076 ep->qp.rq_pgtbl_virt = 1077 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1078 &ep->qp.rq_pgtbl_phys, GFP_KERNEL); 1079 if (!ep->qp.rq_pgtbl_virt) { 1080 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", 1081 ep->qp.rq_pgtbl_size); 1082 goto mem_alloc_err; 1083 } 1084 1085 /* Allocate memory area for actual RQ element */ 1086 ep->qp.rq_virt = 1087 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1088 &ep->qp.rq_phys, GFP_KERNEL); 1089 if (!ep->qp.rq_virt) { 1090 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", 1091 ep->qp.rq_mem_size); 1092 goto mem_alloc_err; 1093 } 1094 1095 ep->qp.rq_first_qe = ep->qp.rq_virt; 1096 ep->qp.rq_prod_qe = ep->qp.rq_first_qe; 1097 ep->qp.rq_cons_qe = ep->qp.rq_first_qe; 1098 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; 1099 ep->qp.rq_prod_idx = 0x8000; 1100 ep->qp.rq_cons_idx = 0; 1101 ep->qp.rqe_left = hba->max_rqes; 1102 1103 setup_qp_page_tables(ep); 1104 1105 return 0; 1106 1107mem_alloc_err: 1108 bnx2i_free_qp_resc(hba, ep); 1109 return -ENOMEM; 1110} 1111 1112 1113 1114/** 1115 * bnx2i_free_qp_resc - free memory resources held by QP 1116 * @hba: adapter structure pointer 1117 * @ep: endpoint (transport indentifier) structure 1118 * 1119 * Free QP resources - SQ/RQ/CQ memory and page tables. 1120 */ 1121void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1122{ 1123 if (ep->qp.ctx_base) { 1124 iounmap(ep->qp.ctx_base); 1125 ep->qp.ctx_base = NULL; 1126 } 1127 /* Free SQ mem */ 1128 if (ep->qp.sq_pgtbl_virt) { 1129 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1130 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); 1131 ep->qp.sq_pgtbl_virt = NULL; 1132 ep->qp.sq_pgtbl_phys = 0; 1133 } 1134 if (ep->qp.sq_virt) { 1135 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1136 ep->qp.sq_virt, ep->qp.sq_phys); 1137 ep->qp.sq_virt = NULL; 1138 ep->qp.sq_phys = 0; 1139 } 1140 1141 /* Free RQ mem */ 1142 if (ep->qp.rq_pgtbl_virt) { 1143 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1144 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); 1145 ep->qp.rq_pgtbl_virt = NULL; 1146 ep->qp.rq_pgtbl_phys = 0; 1147 } 1148 if (ep->qp.rq_virt) { 1149 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1150 ep->qp.rq_virt, ep->qp.rq_phys); 1151 ep->qp.rq_virt = NULL; 1152 ep->qp.rq_phys = 0; 1153 } 1154 1155 /* Free CQ mem */ 1156 if (ep->qp.cq_pgtbl_virt) { 1157 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1158 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); 1159 ep->qp.cq_pgtbl_virt = NULL; 1160 ep->qp.cq_pgtbl_phys = 0; 1161 } 1162 if (ep->qp.cq_virt) { 1163 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1164 ep->qp.cq_virt, ep->qp.cq_phys); 1165 ep->qp.cq_virt = NULL; 1166 ep->qp.cq_phys = 0; 1167 } 1168} 1169 1170 1171/** 1172 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w 1173 * @hba: adapter structure pointer 1174 * 1175 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w 1176 * This results in iSCSi support validation and on-chip context manager 1177 * initialization. Firmware completes this handshake with a CQE carrying 1178 * the result of iscsi support validation. Parameter carried by 1179 * iscsi init request determines the number of offloaded connection and 1180 * tolerance level for iscsi protocol violation this hba/chip can support 1181 */ 1182int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) 1183{ 1184 struct kwqe *kwqe_arr[3]; 1185 struct iscsi_kwqe_init1 iscsi_init; 1186 struct iscsi_kwqe_init2 iscsi_init2; 1187 int rc = 0; 1188 u64 mask64; 1189 1190 bnx2i_adjust_qp_size(hba); 1191 1192 iscsi_init.flags = 1193 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; 1194 if (en_tcp_dack) 1195 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; 1196 iscsi_init.reserved0 = 0; 1197 iscsi_init.num_cqs = 1; 1198 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; 1199 iscsi_init.hdr.flags = 1200 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1201 1202 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; 1203 iscsi_init.dummy_buffer_addr_hi = 1204 (u32) ((u64) hba->dummy_buf_dma >> 32); 1205 1206 hba->ctx_ccell_tasks = 1207 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); 1208 iscsi_init.num_ccells_per_conn = hba->num_ccell; 1209 iscsi_init.num_tasks_per_conn = hba->max_sqes; 1210 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 1211 iscsi_init.sq_num_wqes = hba->max_sqes; 1212 iscsi_init.cq_log_wqes_per_page = 1213 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); 1214 iscsi_init.cq_num_wqes = hba->max_cqes; 1215 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + 1216 (PAGE_SIZE - 1)) / PAGE_SIZE; 1217 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + 1218 (PAGE_SIZE - 1)) / PAGE_SIZE; 1219 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; 1220 iscsi_init.rq_num_wqes = hba->max_rqes; 1221 1222 1223 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; 1224 iscsi_init2.hdr.flags = 1225 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1226 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; 1227 mask64 = 0x0ULL; 1228 mask64 |= ( 1229 /* CISCO MDS */ 1230 (1UL << 1231 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | 1232 /* HP MSA1510i */ 1233 (1UL << 1234 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | 1235 /* EMC */ 1236 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); 1237 if (error_mask1) 1238 iscsi_init2.error_bit_map[0] = error_mask1; 1239 else 1240 iscsi_init2.error_bit_map[0] = (u32) mask64; 1241 1242 if (error_mask2) 1243 iscsi_init2.error_bit_map[1] = error_mask2; 1244 else 1245 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); 1246 1247 iscsi_error_mask = mask64; 1248 1249 kwqe_arr[0] = (struct kwqe *) &iscsi_init; 1250 kwqe_arr[1] = (struct kwqe *) &iscsi_init2; 1251 1252 if (hba->cnic && hba->cnic->submit_kwqes) 1253 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); 1254 return rc; 1255} 1256 1257 1258/** 1259 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. 1260 * @conn: iscsi connection 1261 * @cqe: pointer to newly DMA'ed CQE entry for processing 1262 * 1263 * process SCSI CMD Response CQE & complete the request to SCSI-ML 1264 */ 1265static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, 1266 struct bnx2i_conn *bnx2i_conn, 1267 struct cqe *cqe) 1268{ 1269 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1270 struct bnx2i_cmd_response *resp_cqe; 1271 struct bnx2i_cmd *bnx2i_cmd; 1272 struct iscsi_task *task; 1273 struct iscsi_cmd_rsp *hdr; 1274 u32 datalen = 0; 1275 1276 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1277 spin_lock(&session->lock); 1278 task = iscsi_itt_to_task(conn, 1279 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); 1280 if (!task) 1281 goto fail; 1282 1283 bnx2i_cmd = task->dd_data; 1284 1285 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { 1286 conn->datain_pdus_cnt += 1287 resp_cqe->task_stat.read_stat.num_data_outs; 1288 conn->rxdata_octets += 1289 bnx2i_cmd->req.total_data_transfer_length; 1290 } else { 1291 conn->dataout_pdus_cnt += 1292 resp_cqe->task_stat.read_stat.num_data_outs; 1293 conn->r2t_pdus_cnt += 1294 resp_cqe->task_stat.read_stat.num_r2ts; 1295 conn->txdata_octets += 1296 bnx2i_cmd->req.total_data_transfer_length; 1297 } 1298 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); 1299 1300 hdr = (struct iscsi_cmd_rsp *)task->hdr; 1301 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1302 hdr->opcode = resp_cqe->op_code; 1303 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); 1304 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); 1305 hdr->response = resp_cqe->response; 1306 hdr->cmd_status = resp_cqe->status; 1307 hdr->flags = resp_cqe->response_flags; 1308 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); 1309 1310 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) 1311 goto done; 1312 1313 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { 1314 datalen = resp_cqe->data_length; 1315 if (datalen < 2) 1316 goto done; 1317 1318 if (datalen > BNX2I_RQ_WQE_SIZE) { 1319 iscsi_conn_printk(KERN_ERR, conn, 1320 "sense data len %d > RQ sz\n", 1321 datalen); 1322 datalen = BNX2I_RQ_WQE_SIZE; 1323 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { 1324 iscsi_conn_printk(KERN_ERR, conn, 1325 "sense data len %d > conn data\n", 1326 datalen); 1327 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; 1328 } 1329 1330 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); 1331 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); 1332 } 1333 1334done: 1335 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 1336 conn->data, datalen); 1337fail: 1338 spin_unlock(&session->lock); 1339 return 0; 1340} 1341 1342 1343/** 1344 * bnx2i_process_login_resp - this function handles iscsi login response 1345 * @session: iscsi session pointer 1346 * @bnx2i_conn: iscsi connection pointer 1347 * @cqe: pointer to newly DMA'ed CQE entry for processing 1348 * 1349 * process Login Response CQE & complete it to open-iscsi user daemon 1350 */ 1351static int bnx2i_process_login_resp(struct iscsi_session *session, 1352 struct bnx2i_conn *bnx2i_conn, 1353 struct cqe *cqe) 1354{ 1355 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1356 struct iscsi_task *task; 1357 struct bnx2i_login_response *login; 1358 struct iscsi_login_rsp *resp_hdr; 1359 int pld_len; 1360 int pad_len; 1361 1362 login = (struct bnx2i_login_response *) cqe; 1363 spin_lock(&session->lock); 1364 task = iscsi_itt_to_task(conn, 1365 login->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1366 if (!task) 1367 goto done; 1368 1369 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1370 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1371 resp_hdr->opcode = login->op_code; 1372 resp_hdr->flags = login->response_flags; 1373 resp_hdr->max_version = login->version_max; 1374 resp_hdr->active_version = login->version_active; 1375 resp_hdr->hlength = 0; 1376 1377 hton24(resp_hdr->dlength, login->data_length); 1378 memcpy(resp_hdr->isid, &login->isid_lo, 6); 1379 resp_hdr->tsih = cpu_to_be16(login->tsih); 1380 resp_hdr->itt = task->hdr->itt; 1381 resp_hdr->statsn = cpu_to_be32(login->stat_sn); 1382 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); 1383 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); 1384 resp_hdr->status_class = login->status_class; 1385 resp_hdr->status_detail = login->status_detail; 1386 pld_len = login->data_length; 1387 bnx2i_conn->gen_pdu.resp_wr_ptr = 1388 bnx2i_conn->gen_pdu.resp_buf + pld_len; 1389 1390 pad_len = 0; 1391 if (pld_len & 0x3) 1392 pad_len = 4 - (pld_len % 4); 1393 1394 if (pad_len) { 1395 int i = 0; 1396 for (i = 0; i < pad_len; i++) { 1397 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1398 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1399 } 1400 } 1401 1402 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1403 bnx2i_conn->gen_pdu.resp_buf, 1404 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); 1405done: 1406 spin_unlock(&session->lock); 1407 return 0; 1408} 1409 1410/** 1411 * bnx2i_process_tmf_resp - this function handles iscsi TMF response 1412 * @session: iscsi session pointer 1413 * @bnx2i_conn: iscsi connection pointer 1414 * @cqe: pointer to newly DMA'ed CQE entry for processing 1415 * 1416 * process iSCSI TMF Response CQE and wake up the driver eh thread. 1417 */ 1418static int bnx2i_process_tmf_resp(struct iscsi_session *session, 1419 struct bnx2i_conn *bnx2i_conn, 1420 struct cqe *cqe) 1421{ 1422 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1423 struct iscsi_task *task; 1424 struct bnx2i_tmf_response *tmf_cqe; 1425 struct iscsi_tm_rsp *resp_hdr; 1426 1427 tmf_cqe = (struct bnx2i_tmf_response *)cqe; 1428 spin_lock(&session->lock); 1429 task = iscsi_itt_to_task(conn, 1430 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); 1431 if (!task) 1432 goto done; 1433 1434 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1435 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1436 resp_hdr->opcode = tmf_cqe->op_code; 1437 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); 1438 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); 1439 resp_hdr->itt = task->hdr->itt; 1440 resp_hdr->response = tmf_cqe->response; 1441 1442 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1443done: 1444 spin_unlock(&session->lock); 1445 return 0; 1446} 1447 1448/** 1449 * bnx2i_process_logout_resp - this function handles iscsi logout response 1450 * @session: iscsi session pointer 1451 * @bnx2i_conn: iscsi connection pointer 1452 * @cqe: pointer to newly DMA'ed CQE entry for processing 1453 * 1454 * process iSCSI Logout Response CQE & make function call to 1455 * notify the user daemon. 1456 */ 1457static int bnx2i_process_logout_resp(struct iscsi_session *session, 1458 struct bnx2i_conn *bnx2i_conn, 1459 struct cqe *cqe) 1460{ 1461 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1462 struct iscsi_task *task; 1463 struct bnx2i_logout_response *logout; 1464 struct iscsi_logout_rsp *resp_hdr; 1465 1466 logout = (struct bnx2i_logout_response *) cqe; 1467 spin_lock(&session->lock); 1468 task = iscsi_itt_to_task(conn, 1469 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); 1470 if (!task) 1471 goto done; 1472 1473 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1474 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1475 resp_hdr->opcode = logout->op_code; 1476 resp_hdr->flags = logout->response; 1477 resp_hdr->hlength = 0; 1478 1479 resp_hdr->itt = task->hdr->itt; 1480 resp_hdr->statsn = task->hdr->exp_statsn; 1481 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); 1482 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); 1483 1484 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); 1485 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); 1486 1487 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1488 1489 bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD; 1490done: 1491 spin_unlock(&session->lock); 1492 return 0; 1493} 1494 1495/** 1496 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE 1497 * @session: iscsi session pointer 1498 * @bnx2i_conn: iscsi connection pointer 1499 * @cqe: pointer to newly DMA'ed CQE entry for processing 1500 * 1501 * process iSCSI NOPIN local completion CQE, frees IIT and command structures 1502 */ 1503static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, 1504 struct bnx2i_conn *bnx2i_conn, 1505 struct cqe *cqe) 1506{ 1507 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1508 struct bnx2i_nop_in_msg *nop_in; 1509 struct iscsi_task *task; 1510 1511 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1512 spin_lock(&session->lock); 1513 task = iscsi_itt_to_task(conn, 1514 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); 1515 if (task) 1516 iscsi_put_task(task); 1517 spin_unlock(&session->lock); 1518} 1519 1520/** 1521 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd 1522 * @conn: iscsi connection 1523 * 1524 * Firmware advances RQ producer index for every unsolicited PDU even if 1525 * payload data length is '0'. This function makes corresponding 1526 * adjustments on the driver side to match this f/w behavior 1527 */ 1528static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) 1529{ 1530 char dummy_rq_data[2]; 1531 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); 1532 bnx2i_put_rq_buf(bnx2i_conn, 1); 1533} 1534 1535 1536/** 1537 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE 1538 * @session: iscsi session pointer 1539 * @bnx2i_conn: iscsi connection pointer 1540 * @cqe: pointer to newly DMA'ed CQE entry for processing 1541 * 1542 * process iSCSI target's proactive iSCSI NOPIN request 1543 */ 1544static int bnx2i_process_nopin_mesg(struct iscsi_session *session, 1545 struct bnx2i_conn *bnx2i_conn, 1546 struct cqe *cqe) 1547{ 1548 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1549 struct iscsi_task *task; 1550 struct bnx2i_nop_in_msg *nop_in; 1551 struct iscsi_nopin *hdr; 1552 u32 itt; 1553 int tgt_async_nop = 0; 1554 1555 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1556 itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX; 1557 1558 spin_lock(&session->lock); 1559 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; 1560 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1561 hdr->opcode = nop_in->op_code; 1562 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); 1563 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); 1564 hdr->ttt = cpu_to_be32(nop_in->ttt); 1565 1566 if (itt == (u16) RESERVED_ITT) { 1567 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1568 hdr->itt = RESERVED_ITT; 1569 tgt_async_nop = 1; 1570 goto done; 1571 } 1572 1573 /* this is a response to one of our nop-outs */ 1574 task = iscsi_itt_to_task(conn, itt); 1575 if (task) { 1576 hdr->flags = ISCSI_FLAG_CMD_FINAL; 1577 hdr->itt = task->hdr->itt; 1578 hdr->ttt = cpu_to_be32(nop_in->ttt); 1579 memcpy(hdr->lun, nop_in->lun, 8); 1580 } 1581done: 1582 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); 1583 spin_unlock(&session->lock); 1584 1585 return tgt_async_nop; 1586} 1587 1588 1589/** 1590 * bnx2i_process_async_mesg - this function handles iscsi async message 1591 * @session: iscsi session pointer 1592 * @bnx2i_conn: iscsi connection pointer 1593 * @cqe: pointer to newly DMA'ed CQE entry for processing 1594 * 1595 * process iSCSI ASYNC Message 1596 */ 1597static void bnx2i_process_async_mesg(struct iscsi_session *session, 1598 struct bnx2i_conn *bnx2i_conn, 1599 struct cqe *cqe) 1600{ 1601 struct bnx2i_async_msg *async_cqe; 1602 struct iscsi_async *resp_hdr; 1603 u8 async_event; 1604 1605 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1606 1607 async_cqe = (struct bnx2i_async_msg *)cqe; 1608 async_event = async_cqe->async_event; 1609 1610 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { 1611 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, 1612 "async: scsi events not supported\n"); 1613 return; 1614 } 1615 1616 spin_lock(&session->lock); 1617 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; 1618 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1619 resp_hdr->opcode = async_cqe->op_code; 1620 resp_hdr->flags = 0x80; 1621 1622 memcpy(resp_hdr->lun, async_cqe->lun, 8); 1623 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); 1624 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); 1625 1626 resp_hdr->async_event = async_cqe->async_event; 1627 resp_hdr->async_vcode = async_cqe->async_vcode; 1628 1629 resp_hdr->param1 = cpu_to_be16(async_cqe->param1); 1630 resp_hdr->param2 = cpu_to_be16(async_cqe->param2); 1631 resp_hdr->param3 = cpu_to_be16(async_cqe->param3); 1632 1633 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, 1634 (struct iscsi_hdr *)resp_hdr, NULL, 0); 1635 spin_unlock(&session->lock); 1636} 1637 1638 1639/** 1640 * bnx2i_process_reject_mesg - process iscsi reject pdu 1641 * @session: iscsi session pointer 1642 * @bnx2i_conn: iscsi connection pointer 1643 * @cqe: pointer to newly DMA'ed CQE entry for processing 1644 * 1645 * process iSCSI REJECT message 1646 */ 1647static void bnx2i_process_reject_mesg(struct iscsi_session *session, 1648 struct bnx2i_conn *bnx2i_conn, 1649 struct cqe *cqe) 1650{ 1651 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1652 struct bnx2i_reject_msg *reject; 1653 struct iscsi_reject *hdr; 1654 1655 reject = (struct bnx2i_reject_msg *) cqe; 1656 if (reject->data_length) { 1657 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); 1658 bnx2i_put_rq_buf(bnx2i_conn, 1); 1659 } else 1660 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1661 1662 spin_lock(&session->lock); 1663 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; 1664 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1665 hdr->opcode = reject->op_code; 1666 hdr->reason = reject->reason; 1667 hton24(hdr->dlength, reject->data_length); 1668 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); 1669 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); 1670 hdr->ffffffff = cpu_to_be32(RESERVED_ITT); 1671 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, 1672 reject->data_length); 1673 spin_unlock(&session->lock); 1674} 1675 1676/** 1677 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion 1678 * @session: iscsi session pointer 1679 * @bnx2i_conn: iscsi connection pointer 1680 * @cqe: pointer to newly DMA'ed CQE entry for processing 1681 * 1682 * process command cleanup response CQE during conn shutdown or error recovery 1683 */ 1684static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, 1685 struct bnx2i_conn *bnx2i_conn, 1686 struct cqe *cqe) 1687{ 1688 struct bnx2i_cleanup_response *cmd_clean_rsp; 1689 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1690 struct iscsi_task *task; 1691 1692 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; 1693 spin_lock(&session->lock); 1694 task = iscsi_itt_to_task(conn, 1695 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1696 if (!task) 1697 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", 1698 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1699 spin_unlock(&session->lock); 1700 complete(&bnx2i_conn->cmd_cleanup_cmpl); 1701} 1702 1703 1704 1705/** 1706 * bnx2i_process_new_cqes - process newly DMA'ed CQE's 1707 * @bnx2i_conn: iscsi connection 1708 * 1709 * this function is called by generic KCQ handler to process all pending CQE's 1710 */ 1711static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) 1712{ 1713 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1714 struct iscsi_session *session = conn->session; 1715 struct qp_info *qp = &bnx2i_conn->ep->qp; 1716 struct bnx2i_nop_in_msg *nopin; 1717 int tgt_async_msg; 1718 1719 while (1) { 1720 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; 1721 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) 1722 break; 1723 1724 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) 1725 break; 1726 1727 tgt_async_msg = 0; 1728 1729 switch (nopin->op_code) { 1730 case ISCSI_OP_SCSI_CMD_RSP: 1731 case ISCSI_OP_SCSI_DATA_IN: 1732 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, 1733 qp->cq_cons_qe); 1734 break; 1735 case ISCSI_OP_LOGIN_RSP: 1736 bnx2i_process_login_resp(session, bnx2i_conn, 1737 qp->cq_cons_qe); 1738 break; 1739 case ISCSI_OP_SCSI_TMFUNC_RSP: 1740 bnx2i_process_tmf_resp(session, bnx2i_conn, 1741 qp->cq_cons_qe); 1742 break; 1743 case ISCSI_OP_LOGOUT_RSP: 1744 bnx2i_process_logout_resp(session, bnx2i_conn, 1745 qp->cq_cons_qe); 1746 break; 1747 case ISCSI_OP_NOOP_IN: 1748 if (bnx2i_process_nopin_mesg(session, bnx2i_conn, 1749 qp->cq_cons_qe)) 1750 tgt_async_msg = 1; 1751 break; 1752 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: 1753 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, 1754 qp->cq_cons_qe); 1755 break; 1756 case ISCSI_OP_ASYNC_EVENT: 1757 bnx2i_process_async_mesg(session, bnx2i_conn, 1758 qp->cq_cons_qe); 1759 tgt_async_msg = 1; 1760 break; 1761 case ISCSI_OP_REJECT: 1762 bnx2i_process_reject_mesg(session, bnx2i_conn, 1763 qp->cq_cons_qe); 1764 break; 1765 case ISCSI_OPCODE_CLEANUP_RESPONSE: 1766 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, 1767 qp->cq_cons_qe); 1768 break; 1769 default: 1770 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 1771 nopin->op_code); 1772 } 1773 1774 if (!tgt_async_msg) 1775 bnx2i_conn->ep->num_active_cmds--; 1776 1777 /* clear out in production version only, till beta keep opcode 1778 * field intact, will be helpful in debugging (context dump) 1779 * nopin->op_code = 0; 1780 */ 1781 qp->cqe_exp_seq_sn++; 1782 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) 1783 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1784 1785 if (qp->cq_cons_qe == qp->cq_last_qe) { 1786 qp->cq_cons_qe = qp->cq_first_qe; 1787 qp->cq_cons_idx = 0; 1788 } else { 1789 qp->cq_cons_qe++; 1790 qp->cq_cons_idx++; 1791 } 1792 } 1793 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); 1794} 1795 1796/** 1797 * bnx2i_fastpath_notification - process global event queue (KCQ) 1798 * @hba: adapter structure pointer 1799 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry 1800 * 1801 * Fast path event notification handler, KCQ entry carries context id 1802 * of the connection that has 1 or more pending CQ entries 1803 */ 1804static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, 1805 struct iscsi_kcqe *new_cqe_kcqe) 1806{ 1807 struct bnx2i_conn *conn; 1808 u32 iscsi_cid; 1809 1810 iscsi_cid = new_cqe_kcqe->iscsi_conn_id; 1811 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1812 1813 if (!conn) { 1814 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); 1815 return; 1816 } 1817 if (!conn->ep) { 1818 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); 1819 return; 1820 } 1821 1822 bnx2i_process_new_cqes(conn); 1823} 1824 1825 1826/** 1827 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE 1828 * @hba: adapter structure pointer 1829 * @update_kcqe: kcqe pointer 1830 * 1831 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration 1832 */ 1833static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, 1834 struct iscsi_kcqe *update_kcqe) 1835{ 1836 struct bnx2i_conn *conn; 1837 u32 iscsi_cid; 1838 1839 iscsi_cid = update_kcqe->iscsi_conn_id; 1840 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1841 1842 if (!conn) { 1843 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); 1844 return; 1845 } 1846 if (!conn->ep) { 1847 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); 1848 return; 1849 } 1850 1851 if (update_kcqe->completion_status) { 1852 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); 1853 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; 1854 } else 1855 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; 1856 1857 wake_up_interruptible(&conn->ep->ofld_wait); 1858} 1859 1860 1861/** 1862 * bnx2i_recovery_que_add_conn - add connection to recovery queue 1863 * @hba: adapter structure pointer 1864 * @bnx2i_conn: iscsi connection 1865 * 1866 * Add connection to recovery queue and schedule adapter eh worker 1867 */ 1868static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, 1869 struct bnx2i_conn *bnx2i_conn) 1870{ 1871 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, 1872 ISCSI_ERR_CONN_FAILED); 1873} 1874 1875 1876/** 1877 * bnx2i_process_tcp_error - process error notification on a given connection 1878 * 1879 * @hba: adapter structure pointer 1880 * @tcp_err: tcp error kcqe pointer 1881 * 1882 * handles tcp level error notifications from FW. 1883 */ 1884static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, 1885 struct iscsi_kcqe *tcp_err) 1886{ 1887 struct bnx2i_conn *bnx2i_conn; 1888 u32 iscsi_cid; 1889 1890 iscsi_cid = tcp_err->iscsi_conn_id; 1891 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1892 1893 if (!bnx2i_conn) { 1894 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1895 return; 1896 } 1897 1898 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", 1899 iscsi_cid, tcp_err->completion_status); 1900 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 1901} 1902 1903 1904/** 1905 * bnx2i_process_iscsi_error - process error notification on a given connection 1906 * @hba: adapter structure pointer 1907 * @iscsi_err: iscsi error kcqe pointer 1908 * 1909 * handles iscsi error notifications from the FW. Firmware based in initial 1910 * handshake classifies iscsi protocol / TCP rfc violation into either 1911 * warning or error indications. If indication is of "Error" type, driver 1912 * will initiate session recovery for that connection/session. For 1913 * "Warning" type indication, driver will put out a system log message 1914 * (there will be only one message for each type for the life of the 1915 * session, this is to avoid un-necessarily overloading the system) 1916 */ 1917static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, 1918 struct iscsi_kcqe *iscsi_err) 1919{ 1920 struct bnx2i_conn *bnx2i_conn; 1921 u32 iscsi_cid; 1922 char warn_notice[] = "iscsi_warning"; 1923 char error_notice[] = "iscsi_error"; 1924 char additional_notice[64]; 1925 char *message; 1926 int need_recovery; 1927 u64 err_mask64; 1928 1929 iscsi_cid = iscsi_err->iscsi_conn_id; 1930 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1931 if (!bnx2i_conn) { 1932 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1933 return; 1934 } 1935 1936 err_mask64 = (0x1ULL << iscsi_err->completion_status); 1937 1938 if (err_mask64 & iscsi_error_mask) { 1939 need_recovery = 0; 1940 message = warn_notice; 1941 } else { 1942 need_recovery = 1; 1943 message = error_notice; 1944 } 1945 1946 switch (iscsi_err->completion_status) { 1947 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: 1948 strcpy(additional_notice, "hdr digest err"); 1949 break; 1950 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: 1951 strcpy(additional_notice, "data digest err"); 1952 break; 1953 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: 1954 strcpy(additional_notice, "wrong opcode rcvd"); 1955 break; 1956 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: 1957 strcpy(additional_notice, "AHS len > 0 rcvd"); 1958 break; 1959 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: 1960 strcpy(additional_notice, "invalid ITT rcvd"); 1961 break; 1962 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: 1963 strcpy(additional_notice, "wrong StatSN rcvd"); 1964 break; 1965 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: 1966 strcpy(additional_notice, "wrong DataSN rcvd"); 1967 break; 1968 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: 1969 strcpy(additional_notice, "pend R2T violation"); 1970 break; 1971 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: 1972 strcpy(additional_notice, "ERL0, UO"); 1973 break; 1974 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: 1975 strcpy(additional_notice, "ERL0, U1"); 1976 break; 1977 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: 1978 strcpy(additional_notice, "ERL0, U2"); 1979 break; 1980 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: 1981 strcpy(additional_notice, "ERL0, U3"); 1982 break; 1983 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: 1984 strcpy(additional_notice, "ERL0, U4"); 1985 break; 1986 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: 1987 strcpy(additional_notice, "ERL0, U5"); 1988 break; 1989 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: 1990 strcpy(additional_notice, "ERL0, U6"); 1991 break; 1992 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: 1993 strcpy(additional_notice, "invalid resi len"); 1994 break; 1995 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: 1996 strcpy(additional_notice, "MRDSL violation"); 1997 break; 1998 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: 1999 strcpy(additional_notice, "F-bit not set"); 2000 break; 2001 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: 2002 strcpy(additional_notice, "invalid TTT"); 2003 break; 2004 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: 2005 strcpy(additional_notice, "invalid DataSN"); 2006 break; 2007 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: 2008 strcpy(additional_notice, "burst len violation"); 2009 break; 2010 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: 2011 strcpy(additional_notice, "buf offset violation"); 2012 break; 2013 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: 2014 strcpy(additional_notice, "invalid LUN field"); 2015 break; 2016 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: 2017 strcpy(additional_notice, "invalid R2TSN field"); 2018 break; 2019#define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ 2020 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 2021 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: 2022 strcpy(additional_notice, "invalid cmd len1"); 2023 break; 2024#define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ 2025 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 2026 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: 2027 strcpy(additional_notice, "invalid cmd len2"); 2028 break; 2029 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: 2030 strcpy(additional_notice, 2031 "pend r2t exceeds MaxOutstandingR2T value"); 2032 break; 2033 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: 2034 strcpy(additional_notice, "TTT is rsvd"); 2035 break; 2036 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: 2037 strcpy(additional_notice, "MBL violation"); 2038 break; 2039#define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ 2040 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO 2041 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: 2042 strcpy(additional_notice, "data seg len != 0"); 2043 break; 2044 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: 2045 strcpy(additional_notice, "reject pdu len error"); 2046 break; 2047 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: 2048 strcpy(additional_notice, "async pdu len error"); 2049 break; 2050 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: 2051 strcpy(additional_notice, "nopin pdu len error"); 2052 break; 2053#define BNX2_ERR_PEND_R2T_IN_CLEANUP \ 2054 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP 2055 case BNX2_ERR_PEND_R2T_IN_CLEANUP: 2056 strcpy(additional_notice, "pend r2t in cleanup"); 2057 break; 2058 2059 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: 2060 strcpy(additional_notice, "IP fragments rcvd"); 2061 break; 2062 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: 2063 strcpy(additional_notice, "IP options error"); 2064 break; 2065 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: 2066 strcpy(additional_notice, "urgent flag error"); 2067 break; 2068 default: 2069 printk(KERN_ALERT "iscsi_err - unknown err %x\n", 2070 iscsi_err->completion_status); 2071 } 2072 2073 if (need_recovery) { 2074 iscsi_conn_printk(KERN_ALERT, 2075 bnx2i_conn->cls_conn->dd_data, 2076 "bnx2i: %s - %s\n", 2077 message, additional_notice); 2078 2079 iscsi_conn_printk(KERN_ALERT, 2080 bnx2i_conn->cls_conn->dd_data, 2081 "conn_err - hostno %d conn %p, " 2082 "iscsi_cid %x cid %x\n", 2083 bnx2i_conn->hba->shost->host_no, 2084 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, 2085 bnx2i_conn->ep->ep_cid); 2086 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2087 } else 2088 if (!test_and_set_bit(iscsi_err->completion_status, 2089 (void *) &bnx2i_conn->violation_notified)) 2090 iscsi_conn_printk(KERN_ALERT, 2091 bnx2i_conn->cls_conn->dd_data, 2092 "bnx2i: %s - %s\n", 2093 message, additional_notice); 2094} 2095 2096 2097/** 2098 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion 2099 * @hba: adapter structure pointer 2100 * @conn_destroy: conn destroy kcqe pointer 2101 * 2102 * handles connection destroy completion request. 2103 */ 2104static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, 2105 struct iscsi_kcqe *conn_destroy) 2106{ 2107 struct bnx2i_endpoint *ep; 2108 2109 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); 2110 if (!ep) { 2111 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " 2112 "offload request, unexpected complection\n"); 2113 return; 2114 } 2115 2116 if (hba != ep->hba) { 2117 printk(KERN_ALERT "conn destroy- error hba mis-match\n"); 2118 return; 2119 } 2120 2121 if (conn_destroy->completion_status) { 2122 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); 2123 ep->state = EP_STATE_CLEANUP_FAILED; 2124 } else 2125 ep->state = EP_STATE_CLEANUP_CMPL; 2126 wake_up_interruptible(&ep->ofld_wait); 2127} 2128 2129 2130/** 2131 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion 2132 * @hba: adapter structure pointer 2133 * @ofld_kcqe: conn offload kcqe pointer 2134 * 2135 * handles initial connection offload completion, ep_connect() thread is 2136 * woken-up to continue with LLP connect process 2137 */ 2138static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, 2139 struct iscsi_kcqe *ofld_kcqe) 2140{ 2141 u32 cid_addr; 2142 struct bnx2i_endpoint *ep; 2143 u32 cid_num; 2144 2145 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); 2146 if (!ep) { 2147 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); 2148 return; 2149 } 2150 2151 if (hba != ep->hba) { 2152 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); 2153 return; 2154 } 2155 2156 if (ofld_kcqe->completion_status) { 2157 if (ofld_kcqe->completion_status == 2158 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) 2159 printk(KERN_ALERT "bnx2i: unable to allocate" 2160 " iSCSI context resources\n"); 2161 ep->state = EP_STATE_OFLD_FAILED; 2162 } else { 2163 ep->state = EP_STATE_OFLD_COMPL; 2164 cid_addr = ofld_kcqe->iscsi_conn_context_id; 2165 cid_num = bnx2i_get_cid_num(ep); 2166 ep->ep_cid = cid_addr; 2167 ep->qp.ctx_base = NULL; 2168 } 2169 wake_up_interruptible(&ep->ofld_wait); 2170} 2171 2172/** 2173 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE 2174 * @hba: adapter structure pointer 2175 * @update_kcqe: kcqe pointer 2176 * 2177 * Generic KCQ event handler/dispatcher 2178 */ 2179static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], 2180 u32 num_cqe) 2181{ 2182 struct bnx2i_hba *hba = context; 2183 int i = 0; 2184 struct iscsi_kcqe *ikcqe = NULL; 2185 2186 while (i < num_cqe) { 2187 ikcqe = (struct iscsi_kcqe *) kcqe[i++]; 2188 2189 if (ikcqe->op_code == 2190 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) 2191 bnx2i_fastpath_notification(hba, ikcqe); 2192 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) 2193 bnx2i_process_ofld_cmpl(hba, ikcqe); 2194 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) 2195 bnx2i_process_update_conn_cmpl(hba, ikcqe); 2196 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { 2197 if (ikcqe->completion_status != 2198 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) 2199 bnx2i_iscsi_license_error(hba, ikcqe->\ 2200 completion_status); 2201 else { 2202 set_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2203 bnx2i_get_link_state(hba); 2204 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " 2205 "ISCSI_INIT passed\n", 2206 (u8)hba->pcidev->bus->number, 2207 hba->pci_devno, 2208 (u8)hba->pci_func); 2209 2210 2211 } 2212 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) 2213 bnx2i_process_conn_destroy_cmpl(hba, ikcqe); 2214 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) 2215 bnx2i_process_iscsi_error(hba, ikcqe); 2216 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) 2217 bnx2i_process_tcp_error(hba, ikcqe); 2218 else 2219 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 2220 ikcqe->op_code); 2221 } 2222} 2223 2224 2225/** 2226 * bnx2i_indicate_netevent - Generic netdev event handler 2227 * @context: adapter structure pointer 2228 * @event: event type 2229 * 2230 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, 2231 * NETDEV_GOING_DOWN and NETDEV_CHANGE 2232 */ 2233static void bnx2i_indicate_netevent(void *context, unsigned long event) 2234{ 2235 struct bnx2i_hba *hba = context; 2236 2237 switch (event) { 2238 case NETDEV_UP: 2239 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 2240 bnx2i_send_fw_iscsi_init_msg(hba); 2241 break; 2242 case NETDEV_DOWN: 2243 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2244 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2245 break; 2246 case NETDEV_GOING_DOWN: 2247 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2248 iscsi_host_for_each_session(hba->shost, 2249 bnx2i_drop_session); 2250 break; 2251 case NETDEV_CHANGE: 2252 bnx2i_get_link_state(hba); 2253 break; 2254 default: 2255 ; 2256 } 2257} 2258 2259 2260/** 2261 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion 2262 * @cm_sk: cnic sock structure pointer 2263 * 2264 * function callback exported via bnx2i - cnic driver interface to 2265 * indicate completion of option-2 TCP connect request. 2266 */ 2267static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) 2268{ 2269 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2270 2271 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) 2272 ep->state = EP_STATE_CONNECT_FAILED; 2273 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) 2274 ep->state = EP_STATE_CONNECT_COMPL; 2275 else 2276 ep->state = EP_STATE_CONNECT_FAILED; 2277 2278 wake_up_interruptible(&ep->ofld_wait); 2279} 2280 2281 2282/** 2283 * bnx2i_cm_close_cmpl - process tcp conn close completion 2284 * @cm_sk: cnic sock structure pointer 2285 * 2286 * function callback exported via bnx2i - cnic driver interface to 2287 * indicate completion of option-2 graceful TCP connect shutdown 2288 */ 2289static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) 2290{ 2291 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2292 2293 ep->state = EP_STATE_DISCONN_COMPL; 2294 wake_up_interruptible(&ep->ofld_wait); 2295} 2296 2297 2298/** 2299 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion 2300 * @cm_sk: cnic sock structure pointer 2301 * 2302 * function callback exported via bnx2i - cnic driver interface to 2303 * indicate completion of option-2 abortive TCP connect termination 2304 */ 2305static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) 2306{ 2307 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2308 2309 ep->state = EP_STATE_DISCONN_COMPL; 2310 wake_up_interruptible(&ep->ofld_wait); 2311} 2312 2313 2314/** 2315 * bnx2i_cm_remote_close - process received TCP FIN 2316 * @hba: adapter structure pointer 2317 * @update_kcqe: kcqe pointer 2318 * 2319 * function callback exported via bnx2i - cnic driver interface to indicate 2320 * async TCP events such as FIN 2321 */ 2322static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) 2323{ 2324 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2325 2326 ep->state = EP_STATE_TCP_FIN_RCVD; 2327 if (ep->conn) 2328 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2329} 2330 2331/** 2332 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup 2333 * @hba: adapter structure pointer 2334 * @update_kcqe: kcqe pointer 2335 * 2336 * function callback exported via bnx2i - cnic driver interface to 2337 * indicate async TCP events (RST) sent by the peer. 2338 */ 2339static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) 2340{ 2341 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2342 2343 ep->state = EP_STATE_TCP_RST_RCVD; 2344 if (ep->conn) 2345 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2346} 2347 2348 2349static int bnx2i_send_nl_mesg(void *context, u32 msg_type, 2350 char *buf, u16 buflen) 2351{ 2352 struct bnx2i_hba *hba = context; 2353 int rc; 2354 2355 if (!hba) 2356 return -ENODEV; 2357 2358 rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, 2359 msg_type, buf, buflen); 2360 if (rc) 2361 printk(KERN_ALERT "bnx2i: private nl message send error\n"); 2362 2363 return rc; 2364} 2365 2366 2367/** 2368 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure 2369 * carrying callback function pointers 2370 * 2371 */ 2372struct cnic_ulp_ops bnx2i_cnic_cb = { 2373 .cnic_init = bnx2i_ulp_init, 2374 .cnic_exit = bnx2i_ulp_exit, 2375 .cnic_start = bnx2i_start, 2376 .cnic_stop = bnx2i_stop, 2377 .indicate_kcqes = bnx2i_indicate_kcqe, 2378 .indicate_netevent = bnx2i_indicate_netevent, 2379 .cm_connect_complete = bnx2i_cm_connect_cmpl, 2380 .cm_close_complete = bnx2i_cm_close_cmpl, 2381 .cm_abort_complete = bnx2i_cm_abort_cmpl, 2382 .cm_remote_close = bnx2i_cm_remote_close, 2383 .cm_remote_abort = bnx2i_cm_remote_abort, 2384 .iscsi_nl_send_msg = bnx2i_send_nl_mesg, 2385 .owner = THIS_MODULE 2386}; 2387 2388 2389/** 2390 * bnx2i_map_ep_dbell_regs - map connection doorbell registers 2391 * @ep: bnx2i endpoint 2392 * 2393 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these 2394 * register in BAR #0. Whereas in 57710 these register are accessed by 2395 * mapping BAR #1 2396 */ 2397int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) 2398{ 2399 u32 cid_num; 2400 u32 reg_off; 2401 u32 first_l4l5; 2402 u32 ctx_sz; 2403 u32 config2; 2404 resource_size_t reg_base; 2405 2406 cid_num = bnx2i_get_cid_num(ep); 2407 2408 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 2409 reg_base = pci_resource_start(ep->hba->pcidev, 2410 BNX2X_DOORBELL_PCI_BAR); 2411 reg_off = BNX2I_5771X_DBELL_PAGE_SIZE * (cid_num & 0x1FFFF) + 2412 DPM_TRIGER_TYPE; 2413 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); 2414 goto arm_cq; 2415 } 2416 2417 reg_base = ep->hba->netdev->base_addr; 2418 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && 2419 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { 2420 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); 2421 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; 2422 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; 2423 if (ctx_sz) 2424 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE 2425 + BNX2I_570X_PAGE_SIZE_DEFAULT * 2426 (((cid_num - first_l4l5) / ctx_sz) + 256); 2427 else 2428 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2429 } else 2430 /* 5709 device in normal node and 5706/5708 devices */ 2431 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2432 2433 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 2434 MB_KERNEL_CTX_SIZE); 2435 if (!ep->qp.ctx_base) 2436 return -ENOMEM; 2437 2438arm_cq: 2439 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); 2440 return 0; 2441} 2442