1 /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. 2 * 3 * Copyright (c) 2006 - 2009 Broadcom Corporation 4 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. 5 * Copyright (c) 2007, 2008 Mike Christie 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation. 10 * 11 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com) 12 */ 13 14 #include <scsi/scsi_tcq.h> 15 #include <scsi/libiscsi.h> 16 #include "bnx2i.h" 17 18 /** 19 * bnx2i_get_cid_num - get cid from ep 20 * @ep: endpoint pointer 21 * 22 * Only applicable to 57710 family of devices 23 */ 24 static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) 25 { 26 u32 cid; 27 28 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 29 cid = ep->ep_cid; 30 else 31 cid = GET_CID_NUM(ep->ep_cid); 32 return cid; 33 } 34 35 36 /** 37 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type 38 * @hba: Adapter for which adjustments is to be made 39 * 40 * Only applicable to 57710 family of devices 41 */ 42 static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) 43 { 44 u32 num_elements_per_pg; 45 46 if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || 47 test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || 48 test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { 49 if (!is_power_of_2(hba->max_sqes)) 50 hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); 51 52 if (!is_power_of_2(hba->max_rqes)) 53 hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); 54 } 55 56 /* Adjust each queue size if the user selection does not 57 * yield integral num of page buffers 58 */ 59 /* adjust SQ */ 60 num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 61 if (hba->max_sqes < num_elements_per_pg) 62 hba->max_sqes = num_elements_per_pg; 63 else if (hba->max_sqes % num_elements_per_pg) 64 hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & 65 ~(num_elements_per_pg - 1); 66 67 /* adjust CQ */ 68 num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; 69 if (hba->max_cqes < num_elements_per_pg) 70 hba->max_cqes = num_elements_per_pg; 71 else if (hba->max_cqes % num_elements_per_pg) 72 hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & 73 ~(num_elements_per_pg - 1); 74 75 /* adjust RQ */ 76 num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; 77 if (hba->max_rqes < num_elements_per_pg) 78 hba->max_rqes = num_elements_per_pg; 79 else if (hba->max_rqes % num_elements_per_pg) 80 hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & 81 ~(num_elements_per_pg - 1); 82 } 83 84 85 /** 86 * bnx2i_get_link_state - get network interface link state 87 * @hba: adapter instance pointer 88 * 89 * updates adapter structure flag based on netdev state 90 */ 91 static void bnx2i_get_link_state(struct bnx2i_hba *hba) 92 { 93 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) 94 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 95 else 96 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); 97 } 98 99 100 /** 101 * bnx2i_iscsi_license_error - displays iscsi license related error message 102 * @hba: adapter instance pointer 103 * @error_code: error classification 104 * 105 * Puts out an error log when driver is unable to offload iscsi connection 106 * due to license restrictions 107 */ 108 static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) 109 { 110 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) 111 /* iSCSI offload not supported on this device */ 112 printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", 113 hba->netdev->name); 114 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) 115 /* iSCSI offload not supported on this LOM device */ 116 printk(KERN_ERR "bnx2i: LOM is not enable to " 117 "offload iSCSI connections, dev=%s\n", 118 hba->netdev->name); 119 set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); 120 } 121 122 123 /** 124 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification 125 * @ep: endpoint (transport indentifier) structure 126 * @action: action, ARM or DISARM. For now only ARM_CQE is used 127 * 128 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt 129 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is 130 * outstanding and on chip timer expires 131 */ 132 void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) 133 { 134 struct bnx2i_5771x_cq_db *cq_db; 135 u16 cq_index; 136 u16 next_index; 137 u32 num_active_cmds; 138 139 140 /* Coalesce CQ entries only on 10G devices */ 141 if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 142 return; 143 144 /* Do not update CQ DB multiple times before firmware writes 145 * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious 146 * interrupts and other unwanted results 147 */ 148 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 149 if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) 150 return; 151 152 if (action == CNIC_ARM_CQE) { 153 num_active_cmds = ep->num_active_cmds; 154 if (num_active_cmds <= event_coal_min) 155 next_index = 1; 156 else 157 next_index = event_coal_min + 158 (num_active_cmds - event_coal_min) / event_coal_div; 159 if (!next_index) 160 next_index = 1; 161 cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; 162 if (cq_index > ep->qp.cqe_size * 2) 163 cq_index -= ep->qp.cqe_size * 2; 164 if (!cq_index) 165 cq_index = 1; 166 167 cq_db->sqn[0] = cq_index; 168 } 169 } 170 171 172 /** 173 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer 174 * @conn: iscsi connection on which RQ event occured 175 * @ptr: driver buffer to which RQ buffer contents is to 176 * be copied 177 * @len: length of valid data inside RQ buf 178 * 179 * Copies RQ buffer contents from shared (DMA'able) memory region to 180 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and 181 * scsi sense info 182 */ 183 void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) 184 { 185 if (!bnx2i_conn->ep->qp.rqe_left) 186 return; 187 188 bnx2i_conn->ep->qp.rqe_left--; 189 memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); 190 if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { 191 bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; 192 bnx2i_conn->ep->qp.rq_cons_idx = 0; 193 } else { 194 bnx2i_conn->ep->qp.rq_cons_qe++; 195 bnx2i_conn->ep->qp.rq_cons_idx++; 196 } 197 } 198 199 200 static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) 201 { 202 struct bnx2i_5771x_dbell dbell; 203 u32 msg; 204 205 memset(&dbell, 0, sizeof(dbell)); 206 dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << 207 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); 208 msg = *((u32 *)&dbell); 209 /* TODO : get doorbell register mapping */ 210 writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); 211 } 212 213 214 /** 215 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell 216 * @conn: iscsi connection on which event to post 217 * @count: number of RQ buffer being posted to chip 218 * 219 * No need to ring hardware doorbell for 57710 family of devices 220 */ 221 void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) 222 { 223 struct bnx2i_5771x_sq_rq_db *rq_db; 224 u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); 225 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 226 227 ep->qp.rqe_left += count; 228 ep->qp.rq_prod_idx &= 0x7FFF; 229 ep->qp.rq_prod_idx += count; 230 231 if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { 232 ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; 233 if (!hi_bit) 234 ep->qp.rq_prod_idx |= 0x8000; 235 } else 236 ep->qp.rq_prod_idx |= hi_bit; 237 238 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 239 rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; 240 rq_db->prod_idx = ep->qp.rq_prod_idx; 241 /* no need to ring hardware doorbell for 57710 */ 242 } else { 243 writew(ep->qp.rq_prod_idx, 244 ep->qp.ctx_base + CNIC_RECV_DOORBELL); 245 } 246 mmiowb(); 247 } 248 249 250 /** 251 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine 252 * @conn: iscsi connection to which new SQ entries belong 253 * @count: number of SQ WQEs to post 254 * 255 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family 256 * of devices. For 5706/5708/5709 new SQ WQE count is written into the 257 * doorbell register 258 */ 259 static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) 260 { 261 struct bnx2i_5771x_sq_rq_db *sq_db; 262 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 263 264 ep->num_active_cmds++; 265 wmb(); /* flush SQ WQE memory before the doorbell is rung */ 266 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 267 sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; 268 sq_db->prod_idx = ep->qp.sq_prod_idx; 269 bnx2i_ring_577xx_doorbell(bnx2i_conn); 270 } else 271 writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); 272 273 mmiowb(); /* flush posted PCI writes */ 274 } 275 276 277 /** 278 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters 279 * @conn: iscsi connection to which new SQ entries belong 280 * @count: number of SQ WQEs to post 281 * 282 * this routine will update SQ driver parameters and ring the doorbell 283 */ 284 static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, 285 int count) 286 { 287 int tmp_cnt; 288 289 if (count == 1) { 290 if (bnx2i_conn->ep->qp.sq_prod_qe == 291 bnx2i_conn->ep->qp.sq_last_qe) 292 bnx2i_conn->ep->qp.sq_prod_qe = 293 bnx2i_conn->ep->qp.sq_first_qe; 294 else 295 bnx2i_conn->ep->qp.sq_prod_qe++; 296 } else { 297 if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= 298 bnx2i_conn->ep->qp.sq_last_qe) 299 bnx2i_conn->ep->qp.sq_prod_qe += count; 300 else { 301 tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - 302 bnx2i_conn->ep->qp.sq_prod_qe; 303 bnx2i_conn->ep->qp.sq_prod_qe = 304 &bnx2i_conn->ep->qp.sq_first_qe[count - 305 (tmp_cnt + 1)]; 306 } 307 } 308 bnx2i_conn->ep->qp.sq_prod_idx += count; 309 /* Ring the doorbell */ 310 bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); 311 } 312 313 314 /** 315 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware 316 * @conn: iscsi connection 317 * @cmd: driver command structure which is requesting 318 * a WQE to sent to chip for further processing 319 * 320 * prepare and post an iSCSI Login request WQE to CNIC firmware 321 */ 322 int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, 323 struct iscsi_task *task) 324 { 325 struct bnx2i_cmd *bnx2i_cmd; 326 struct bnx2i_login_request *login_wqe; 327 struct iscsi_login *login_hdr; 328 u32 dword; 329 330 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 331 login_hdr = (struct iscsi_login *)task->hdr; 332 login_wqe = (struct bnx2i_login_request *) 333 bnx2i_conn->ep->qp.sq_prod_qe; 334 335 login_wqe->op_code = login_hdr->opcode; 336 login_wqe->op_attr = login_hdr->flags; 337 login_wqe->version_max = login_hdr->max_version; 338 login_wqe->version_min = login_hdr->min_version; 339 login_wqe->data_length = ntoh24(login_hdr->dlength); 340 login_wqe->isid_lo = *((u32 *) login_hdr->isid); 341 login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); 342 login_wqe->tsih = login_hdr->tsih; 343 login_wqe->itt = task->itt | 344 (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); 345 login_wqe->cid = login_hdr->cid; 346 347 login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); 348 login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 349 350 login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; 351 login_wqe->resp_bd_list_addr_hi = 352 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); 353 354 dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | 355 (bnx2i_conn->gen_pdu.resp_buf_size << 356 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); 357 login_wqe->resp_buffer = dword; 358 login_wqe->flags = 0; 359 login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; 360 login_wqe->bd_list_addr_hi = 361 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); 362 login_wqe->num_bds = 1; 363 login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 364 365 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 366 return 0; 367 } 368 369 /** 370 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware 371 * @conn: iscsi connection 372 * @mtask: driver command structure which is requesting 373 * a WQE to sent to chip for further processing 374 * 375 * prepare and post an iSCSI Login request WQE to CNIC firmware 376 */ 377 int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, 378 struct iscsi_task *mtask) 379 { 380 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 381 struct iscsi_tm *tmfabort_hdr; 382 struct scsi_cmnd *ref_sc; 383 struct iscsi_task *ctask; 384 struct bnx2i_cmd *bnx2i_cmd; 385 struct bnx2i_tmf_request *tmfabort_wqe; 386 u32 dword; 387 u32 scsi_lun[2]; 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 = 0; 396 tmfabort_wqe->op_attr = 397 ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK; 398 399 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); 400 tmfabort_wqe->reserved2 = 0; 401 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); 402 403 ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); 404 if (!ctask || !ctask->sc) 405 /* 406 * the iscsi layer must have completed the cmd while this 407 * was starting up. 408 * 409 * Note: In the case of a SCSI cmd timeout, the task's sc 410 * is still active; hence ctask->sc != 0 411 * In this case, the task must be aborted 412 */ 413 return 0; 414 415 ref_sc = ctask->sc; 416 417 /* Retrieve LUN directly from the ref_sc */ 418 int_to_scsilun(ref_sc->device->lun, (struct scsi_lun *) scsi_lun); 419 tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); 420 tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); 421 422 if (ref_sc->sc_data_direction == DMA_TO_DEVICE) 423 dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT); 424 else 425 dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT); 426 tmfabort_wqe->ref_itt = (dword | (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); 427 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); 428 429 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 430 tmfabort_wqe->bd_list_addr_hi = (u32) 431 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 432 tmfabort_wqe->num_bds = 1; 433 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 434 435 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 436 return 0; 437 } 438 439 /** 440 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware 441 * @conn: iscsi connection 442 * @cmd: driver command structure which is requesting 443 * a WQE to sent to chip for further processing 444 * 445 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware 446 */ 447 int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, 448 struct bnx2i_cmd *cmd) 449 { 450 struct bnx2i_cmd_request *scsi_cmd_wqe; 451 452 scsi_cmd_wqe = (struct bnx2i_cmd_request *) 453 bnx2i_conn->ep->qp.sq_prod_qe; 454 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); 455 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 456 457 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 458 return 0; 459 } 460 461 /** 462 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware 463 * @conn: iscsi connection 464 * @cmd: driver command structure which is requesting 465 * a WQE to sent to chip for further processing 466 * @ttt: TTT to be used when building pdu header 467 * @datap: payload buffer pointer 468 * @data_len: payload data length 469 * @unsol: indicated whether nopout pdu is unsolicited pdu or 470 * in response to target's NOPIN w/ TTT != FFFFFFFF 471 * 472 * prepare and post a nopout request WQE to CNIC firmware 473 */ 474 int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, 475 struct iscsi_task *task, u32 ttt, 476 char *datap, int data_len, int unsol) 477 { 478 struct bnx2i_endpoint *ep = bnx2i_conn->ep; 479 struct bnx2i_cmd *bnx2i_cmd; 480 struct bnx2i_nop_out_request *nopout_wqe; 481 struct iscsi_nopout *nopout_hdr; 482 483 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 484 nopout_hdr = (struct iscsi_nopout *)task->hdr; 485 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; 486 nopout_wqe->op_code = nopout_hdr->opcode; 487 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; 488 memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); 489 490 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 491 u32 tmp = nopout_hdr->lun[0]; 492 /* 57710 requires LUN field to be swapped */ 493 nopout_hdr->lun[0] = nopout_hdr->lun[1]; 494 nopout_hdr->lun[1] = tmp; 495 } 496 497 nopout_wqe->itt = ((u16)task->itt | 498 (ISCSI_TASK_TYPE_MPATH << 499 ISCSI_TMF_REQUEST_TYPE_SHIFT)); 500 nopout_wqe->ttt = ttt; 501 nopout_wqe->flags = 0; 502 if (!unsol) 503 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 504 else if (nopout_hdr->itt == RESERVED_ITT) 505 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; 506 507 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 508 nopout_wqe->data_length = data_len; 509 if (data_len) { 510 /* handle payload data, not required in first release */ 511 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); 512 } else { 513 nopout_wqe->bd_list_addr_lo = (u32) 514 bnx2i_conn->hba->mp_bd_dma; 515 nopout_wqe->bd_list_addr_hi = 516 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 517 nopout_wqe->num_bds = 1; 518 } 519 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 520 521 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 522 return 0; 523 } 524 525 526 /** 527 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware 528 * @conn: iscsi connection 529 * @cmd: driver command structure which is requesting 530 * a WQE to sent to chip for further processing 531 * 532 * prepare and post logout request WQE to CNIC firmware 533 */ 534 int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, 535 struct iscsi_task *task) 536 { 537 struct bnx2i_cmd *bnx2i_cmd; 538 struct bnx2i_logout_request *logout_wqe; 539 struct iscsi_logout *logout_hdr; 540 541 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; 542 logout_hdr = (struct iscsi_logout *)task->hdr; 543 544 logout_wqe = (struct bnx2i_logout_request *) 545 bnx2i_conn->ep->qp.sq_prod_qe; 546 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); 547 548 logout_wqe->op_code = logout_hdr->opcode; 549 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 550 logout_wqe->op_attr = 551 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; 552 logout_wqe->itt = ((u16)task->itt | 553 (ISCSI_TASK_TYPE_MPATH << 554 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); 555 logout_wqe->data_length = 0; 556 logout_wqe->cid = 0; 557 558 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; 559 logout_wqe->bd_list_addr_hi = (u32) 560 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); 561 logout_wqe->num_bds = 1; 562 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ 563 564 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); 565 return 0; 566 } 567 568 569 /** 570 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware 571 * @conn: iscsi connection which requires iscsi parameter update 572 * 573 * sends down iSCSI Conn Update request to move iSCSI conn to FFP 574 */ 575 void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) 576 { 577 struct bnx2i_conn *bnx2i_conn = conn->dd_data; 578 struct bnx2i_hba *hba = bnx2i_conn->hba; 579 struct kwqe *kwqe_arr[2]; 580 struct iscsi_kwqe_conn_update *update_wqe; 581 struct iscsi_kwqe_conn_update conn_update_kwqe; 582 583 update_wqe = &conn_update_kwqe; 584 585 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; 586 update_wqe->hdr.flags = 587 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 588 589 /* 5771x requires conn context id to be passed as is */ 590 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) 591 update_wqe->context_id = bnx2i_conn->ep->ep_cid; 592 else 593 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); 594 update_wqe->conn_flags = 0; 595 if (conn->hdrdgst_en) 596 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; 597 if (conn->datadgst_en) 598 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; 599 if (conn->session->initial_r2t_en) 600 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; 601 if (conn->session->imm_data_en) 602 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; 603 604 update_wqe->max_send_pdu_length = conn->max_xmit_dlength; 605 update_wqe->max_recv_pdu_length = conn->max_recv_dlength; 606 update_wqe->first_burst_length = conn->session->first_burst; 607 update_wqe->max_burst_length = conn->session->max_burst; 608 update_wqe->exp_stat_sn = conn->exp_statsn; 609 update_wqe->max_outstanding_r2ts = conn->session->max_r2t; 610 update_wqe->session_error_recovery_level = conn->session->erl; 611 iscsi_conn_printk(KERN_ALERT, conn, 612 "bnx2i: conn update - MBL 0x%x FBL 0x%x" 613 "MRDSL_I 0x%x MRDSL_T 0x%x \n", 614 update_wqe->max_burst_length, 615 update_wqe->first_burst_length, 616 update_wqe->max_recv_pdu_length, 617 update_wqe->max_send_pdu_length); 618 619 kwqe_arr[0] = (struct kwqe *) update_wqe; 620 if (hba->cnic && hba->cnic->submit_kwqes) 621 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 622 } 623 624 625 /** 626 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware 627 * @data: endpoint (transport handle) structure pointer 628 * 629 * routine to handle connection offload/destroy request timeout 630 */ 631 void bnx2i_ep_ofld_timer(unsigned long data) 632 { 633 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; 634 635 if (ep->state == EP_STATE_OFLD_START) { 636 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); 637 ep->state = EP_STATE_OFLD_FAILED; 638 } else if (ep->state == EP_STATE_DISCONN_START) { 639 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); 640 ep->state = EP_STATE_DISCONN_TIMEDOUT; 641 } else if (ep->state == EP_STATE_CLEANUP_START) { 642 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); 643 ep->state = EP_STATE_CLEANUP_FAILED; 644 } 645 646 wake_up_interruptible(&ep->ofld_wait); 647 } 648 649 650 static int bnx2i_power_of2(u32 val) 651 { 652 u32 power = 0; 653 if (val & (val - 1)) 654 return power; 655 val--; 656 while (val) { 657 val = val >> 1; 658 power++; 659 } 660 return power; 661 } 662 663 664 /** 665 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request 666 * @hba: adapter structure pointer 667 * @cmd: driver command structure which is requesting 668 * a WQE to sent to chip for further processing 669 * 670 * prepares and posts CONN_OFLD_REQ1/2 KWQE 671 */ 672 void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) 673 { 674 struct bnx2i_cleanup_request *cmd_cleanup; 675 676 cmd_cleanup = 677 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; 678 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); 679 680 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; 681 cmd_cleanup->itt = cmd->req.itt; 682 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ 683 684 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); 685 } 686 687 688 /** 689 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process 690 * @hba: adapter structure pointer 691 * @ep: endpoint (transport indentifier) structure 692 * 693 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate 694 * iscsi connection context clean-up process 695 */ 696 void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 697 { 698 struct kwqe *kwqe_arr[2]; 699 struct iscsi_kwqe_conn_destroy conn_cleanup; 700 701 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); 702 703 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; 704 conn_cleanup.hdr.flags = 705 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 706 /* 5771x requires conn context id to be passed as is */ 707 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 708 conn_cleanup.context_id = ep->ep_cid; 709 else 710 conn_cleanup.context_id = (ep->ep_cid >> 7); 711 712 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; 713 714 kwqe_arr[0] = (struct kwqe *) &conn_cleanup; 715 if (hba->cnic && hba->cnic->submit_kwqes) 716 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); 717 } 718 719 720 /** 721 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process 722 * @hba: adapter structure pointer 723 * @ep: endpoint (transport indentifier) structure 724 * 725 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 726 */ 727 static void bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, 728 struct bnx2i_endpoint *ep) 729 { 730 struct kwqe *kwqe_arr[2]; 731 struct iscsi_kwqe_conn_offload1 ofld_req1; 732 struct iscsi_kwqe_conn_offload2 ofld_req2; 733 dma_addr_t dma_addr; 734 int num_kwqes = 2; 735 u32 *ptbl; 736 737 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 738 ofld_req1.hdr.flags = 739 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 740 741 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 742 743 dma_addr = ep->qp.sq_pgtbl_phys; 744 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 745 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 746 747 dma_addr = ep->qp.cq_pgtbl_phys; 748 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 749 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 750 751 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 752 ofld_req2.hdr.flags = 753 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 754 755 dma_addr = ep->qp.rq_pgtbl_phys; 756 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 757 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 758 759 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 760 761 ofld_req2.sq_first_pte.hi = *ptbl++; 762 ofld_req2.sq_first_pte.lo = *ptbl; 763 764 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 765 ofld_req2.cq_first_pte.hi = *ptbl++; 766 ofld_req2.cq_first_pte.lo = *ptbl; 767 768 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 769 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 770 ofld_req2.num_additional_wqes = 0; 771 772 if (hba->cnic && hba->cnic->submit_kwqes) 773 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 774 } 775 776 777 /** 778 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation 779 * @hba: adapter structure pointer 780 * @ep: endpoint (transport indentifier) structure 781 * 782 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE 783 */ 784 static void bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, 785 struct bnx2i_endpoint *ep) 786 { 787 struct kwqe *kwqe_arr[5]; 788 struct iscsi_kwqe_conn_offload1 ofld_req1; 789 struct iscsi_kwqe_conn_offload2 ofld_req2; 790 struct iscsi_kwqe_conn_offload3 ofld_req3[1]; 791 dma_addr_t dma_addr; 792 int num_kwqes = 2; 793 u32 *ptbl; 794 795 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; 796 ofld_req1.hdr.flags = 797 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 798 799 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; 800 801 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; 802 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; 803 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 804 805 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; 806 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; 807 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 808 809 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; 810 ofld_req2.hdr.flags = 811 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 812 813 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; 814 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; 815 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); 816 817 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 818 ofld_req2.sq_first_pte.hi = *ptbl++; 819 ofld_req2.sq_first_pte.lo = *ptbl; 820 821 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 822 ofld_req2.cq_first_pte.hi = *ptbl++; 823 ofld_req2.cq_first_pte.lo = *ptbl; 824 825 kwqe_arr[0] = (struct kwqe *) &ofld_req1; 826 kwqe_arr[1] = (struct kwqe *) &ofld_req2; 827 828 ofld_req2.num_additional_wqes = 1; 829 memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); 830 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 831 ofld_req3[0].qp_first_pte[0].hi = *ptbl++; 832 ofld_req3[0].qp_first_pte[0].lo = *ptbl; 833 834 kwqe_arr[2] = (struct kwqe *) ofld_req3; 835 /* need if we decide to go with multiple KCQE's per conn */ 836 num_kwqes += 1; 837 838 if (hba->cnic && hba->cnic->submit_kwqes) 839 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); 840 } 841 842 /** 843 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process 844 * 845 * @hba: adapter structure pointer 846 * @ep: endpoint (transport indentifier) structure 847 * 848 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE 849 */ 850 void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 851 { 852 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) 853 bnx2i_5771x_send_conn_ofld_req(hba, ep); 854 else 855 bnx2i_570x_send_conn_ofld_req(hba, ep); 856 } 857 858 859 /** 860 * setup_qp_page_tables - iscsi QP page table setup function 861 * @ep: endpoint (transport indentifier) structure 862 * 863 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires 864 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires 865 * PT in little endian format 866 */ 867 static void setup_qp_page_tables(struct bnx2i_endpoint *ep) 868 { 869 int num_pages; 870 u32 *ptbl; 871 dma_addr_t page; 872 int cnic_dev_10g; 873 874 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) 875 cnic_dev_10g = 1; 876 else 877 cnic_dev_10g = 0; 878 879 /* SQ page table */ 880 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); 881 num_pages = ep->qp.sq_mem_size / PAGE_SIZE; 882 page = ep->qp.sq_phys; 883 884 if (cnic_dev_10g) 885 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); 886 else 887 ptbl = (u32 *) ep->qp.sq_pgtbl_virt; 888 while (num_pages--) { 889 if (cnic_dev_10g) { 890 /* PTE is written in little endian format for 57710 */ 891 *ptbl = (u32) page; 892 ptbl++; 893 *ptbl = (u32) ((u64) page >> 32); 894 ptbl++; 895 page += PAGE_SIZE; 896 } else { 897 /* PTE is written in big endian format for 898 * 5706/5708/5709 devices */ 899 *ptbl = (u32) ((u64) page >> 32); 900 ptbl++; 901 *ptbl = (u32) page; 902 ptbl++; 903 page += PAGE_SIZE; 904 } 905 } 906 907 /* RQ page table */ 908 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); 909 num_pages = ep->qp.rq_mem_size / PAGE_SIZE; 910 page = ep->qp.rq_phys; 911 912 if (cnic_dev_10g) 913 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); 914 else 915 ptbl = (u32 *) ep->qp.rq_pgtbl_virt; 916 while (num_pages--) { 917 if (cnic_dev_10g) { 918 /* PTE is written in little endian format for 57710 */ 919 *ptbl = (u32) page; 920 ptbl++; 921 *ptbl = (u32) ((u64) page >> 32); 922 ptbl++; 923 page += PAGE_SIZE; 924 } else { 925 /* PTE is written in big endian format for 926 * 5706/5708/5709 devices */ 927 *ptbl = (u32) ((u64) page >> 32); 928 ptbl++; 929 *ptbl = (u32) page; 930 ptbl++; 931 page += PAGE_SIZE; 932 } 933 } 934 935 /* CQ page table */ 936 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); 937 num_pages = ep->qp.cq_mem_size / PAGE_SIZE; 938 page = ep->qp.cq_phys; 939 940 if (cnic_dev_10g) 941 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); 942 else 943 ptbl = (u32 *) ep->qp.cq_pgtbl_virt; 944 while (num_pages--) { 945 if (cnic_dev_10g) { 946 /* PTE is written in little endian format for 57710 */ 947 *ptbl = (u32) page; 948 ptbl++; 949 *ptbl = (u32) ((u64) page >> 32); 950 ptbl++; 951 page += PAGE_SIZE; 952 } else { 953 /* PTE is written in big endian format for 954 * 5706/5708/5709 devices */ 955 *ptbl = (u32) ((u64) page >> 32); 956 ptbl++; 957 *ptbl = (u32) page; 958 ptbl++; 959 page += PAGE_SIZE; 960 } 961 } 962 } 963 964 965 /** 966 * bnx2i_alloc_qp_resc - allocates required resources for QP. 967 * @hba: adapter structure pointer 968 * @ep: endpoint (transport indentifier) structure 969 * 970 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able 971 * memory for SQ/RQ/CQ and page tables. EP structure elements such 972 * as producer/consumer indexes/pointers, queue sizes and page table 973 * contents are setup 974 */ 975 int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 976 { 977 struct bnx2i_5771x_cq_db *cq_db; 978 979 ep->hba = hba; 980 ep->conn = NULL; 981 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; 982 983 /* Allocate page table memory for SQ which is page aligned */ 984 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; 985 ep->qp.sq_mem_size = 986 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 987 ep->qp.sq_pgtbl_size = 988 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); 989 ep->qp.sq_pgtbl_size = 990 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 991 992 ep->qp.sq_pgtbl_virt = 993 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 994 &ep->qp.sq_pgtbl_phys, GFP_KERNEL); 995 if (!ep->qp.sq_pgtbl_virt) { 996 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", 997 ep->qp.sq_pgtbl_size); 998 goto mem_alloc_err; 999 } 1000 1001 /* Allocate memory area for actual SQ element */ 1002 ep->qp.sq_virt = 1003 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1004 &ep->qp.sq_phys, GFP_KERNEL); 1005 if (!ep->qp.sq_virt) { 1006 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", 1007 ep->qp.sq_mem_size); 1008 goto mem_alloc_err; 1009 } 1010 1011 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); 1012 ep->qp.sq_first_qe = ep->qp.sq_virt; 1013 ep->qp.sq_prod_qe = ep->qp.sq_first_qe; 1014 ep->qp.sq_cons_qe = ep->qp.sq_first_qe; 1015 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; 1016 ep->qp.sq_prod_idx = 0; 1017 ep->qp.sq_cons_idx = 0; 1018 ep->qp.sqe_left = hba->max_sqes; 1019 1020 /* Allocate page table memory for CQ which is page aligned */ 1021 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; 1022 ep->qp.cq_mem_size = 1023 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1024 ep->qp.cq_pgtbl_size = 1025 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); 1026 ep->qp.cq_pgtbl_size = 1027 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1028 1029 ep->qp.cq_pgtbl_virt = 1030 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1031 &ep->qp.cq_pgtbl_phys, GFP_KERNEL); 1032 if (!ep->qp.cq_pgtbl_virt) { 1033 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", 1034 ep->qp.cq_pgtbl_size); 1035 goto mem_alloc_err; 1036 } 1037 1038 /* Allocate memory area for actual CQ element */ 1039 ep->qp.cq_virt = 1040 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1041 &ep->qp.cq_phys, GFP_KERNEL); 1042 if (!ep->qp.cq_virt) { 1043 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", 1044 ep->qp.cq_mem_size); 1045 goto mem_alloc_err; 1046 } 1047 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); 1048 1049 ep->qp.cq_first_qe = ep->qp.cq_virt; 1050 ep->qp.cq_prod_qe = ep->qp.cq_first_qe; 1051 ep->qp.cq_cons_qe = ep->qp.cq_first_qe; 1052 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; 1053 ep->qp.cq_prod_idx = 0; 1054 ep->qp.cq_cons_idx = 0; 1055 ep->qp.cqe_left = hba->max_cqes; 1056 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1057 ep->qp.cqe_size = hba->max_cqes; 1058 1059 /* Invalidate all EQ CQE index, req only for 57710 */ 1060 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; 1061 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); 1062 1063 /* Allocate page table memory for RQ which is page aligned */ 1064 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; 1065 ep->qp.rq_mem_size = 1066 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1067 ep->qp.rq_pgtbl_size = 1068 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); 1069 ep->qp.rq_pgtbl_size = 1070 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; 1071 1072 ep->qp.rq_pgtbl_virt = 1073 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1074 &ep->qp.rq_pgtbl_phys, GFP_KERNEL); 1075 if (!ep->qp.rq_pgtbl_virt) { 1076 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", 1077 ep->qp.rq_pgtbl_size); 1078 goto mem_alloc_err; 1079 } 1080 1081 /* Allocate memory area for actual RQ element */ 1082 ep->qp.rq_virt = 1083 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1084 &ep->qp.rq_phys, GFP_KERNEL); 1085 if (!ep->qp.rq_virt) { 1086 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", 1087 ep->qp.rq_mem_size); 1088 goto mem_alloc_err; 1089 } 1090 1091 ep->qp.rq_first_qe = ep->qp.rq_virt; 1092 ep->qp.rq_prod_qe = ep->qp.rq_first_qe; 1093 ep->qp.rq_cons_qe = ep->qp.rq_first_qe; 1094 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; 1095 ep->qp.rq_prod_idx = 0x8000; 1096 ep->qp.rq_cons_idx = 0; 1097 ep->qp.rqe_left = hba->max_rqes; 1098 1099 setup_qp_page_tables(ep); 1100 1101 return 0; 1102 1103 mem_alloc_err: 1104 bnx2i_free_qp_resc(hba, ep); 1105 return -ENOMEM; 1106 } 1107 1108 1109 1110 /** 1111 * bnx2i_free_qp_resc - free memory resources held by QP 1112 * @hba: adapter structure pointer 1113 * @ep: endpoint (transport indentifier) structure 1114 * 1115 * Free QP resources - SQ/RQ/CQ memory and page tables. 1116 */ 1117 void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) 1118 { 1119 if (ep->qp.ctx_base) { 1120 iounmap(ep->qp.ctx_base); 1121 ep->qp.ctx_base = NULL; 1122 } 1123 /* Free SQ mem */ 1124 if (ep->qp.sq_pgtbl_virt) { 1125 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, 1126 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); 1127 ep->qp.sq_pgtbl_virt = NULL; 1128 ep->qp.sq_pgtbl_phys = 0; 1129 } 1130 if (ep->qp.sq_virt) { 1131 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, 1132 ep->qp.sq_virt, ep->qp.sq_phys); 1133 ep->qp.sq_virt = NULL; 1134 ep->qp.sq_phys = 0; 1135 } 1136 1137 /* Free RQ mem */ 1138 if (ep->qp.rq_pgtbl_virt) { 1139 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, 1140 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); 1141 ep->qp.rq_pgtbl_virt = NULL; 1142 ep->qp.rq_pgtbl_phys = 0; 1143 } 1144 if (ep->qp.rq_virt) { 1145 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, 1146 ep->qp.rq_virt, ep->qp.rq_phys); 1147 ep->qp.rq_virt = NULL; 1148 ep->qp.rq_phys = 0; 1149 } 1150 1151 /* Free CQ mem */ 1152 if (ep->qp.cq_pgtbl_virt) { 1153 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, 1154 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); 1155 ep->qp.cq_pgtbl_virt = NULL; 1156 ep->qp.cq_pgtbl_phys = 0; 1157 } 1158 if (ep->qp.cq_virt) { 1159 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, 1160 ep->qp.cq_virt, ep->qp.cq_phys); 1161 ep->qp.cq_virt = NULL; 1162 ep->qp.cq_phys = 0; 1163 } 1164 } 1165 1166 1167 /** 1168 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w 1169 * @hba: adapter structure pointer 1170 * 1171 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w 1172 * This results in iSCSi support validation and on-chip context manager 1173 * initialization. Firmware completes this handshake with a CQE carrying 1174 * the result of iscsi support validation. Parameter carried by 1175 * iscsi init request determines the number of offloaded connection and 1176 * tolerance level for iscsi protocol violation this hba/chip can support 1177 */ 1178 int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) 1179 { 1180 struct kwqe *kwqe_arr[3]; 1181 struct iscsi_kwqe_init1 iscsi_init; 1182 struct iscsi_kwqe_init2 iscsi_init2; 1183 int rc = 0; 1184 u64 mask64; 1185 1186 bnx2i_adjust_qp_size(hba); 1187 1188 iscsi_init.flags = 1189 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; 1190 if (en_tcp_dack) 1191 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; 1192 iscsi_init.reserved0 = 0; 1193 iscsi_init.num_cqs = 1; 1194 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; 1195 iscsi_init.hdr.flags = 1196 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1197 1198 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; 1199 iscsi_init.dummy_buffer_addr_hi = 1200 (u32) ((u64) hba->dummy_buf_dma >> 32); 1201 1202 hba->ctx_ccell_tasks = 1203 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); 1204 iscsi_init.num_ccells_per_conn = hba->num_ccell; 1205 iscsi_init.num_tasks_per_conn = hba->max_sqes; 1206 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; 1207 iscsi_init.sq_num_wqes = hba->max_sqes; 1208 iscsi_init.cq_log_wqes_per_page = 1209 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); 1210 iscsi_init.cq_num_wqes = hba->max_cqes; 1211 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + 1212 (PAGE_SIZE - 1)) / PAGE_SIZE; 1213 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + 1214 (PAGE_SIZE - 1)) / PAGE_SIZE; 1215 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; 1216 iscsi_init.rq_num_wqes = hba->max_rqes; 1217 1218 1219 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; 1220 iscsi_init2.hdr.flags = 1221 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); 1222 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; 1223 mask64 = 0x0ULL; 1224 mask64 |= ( 1225 /* CISCO MDS */ 1226 (1UL << 1227 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | 1228 /* HP MSA1510i */ 1229 (1UL << 1230 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | 1231 /* EMC */ 1232 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); 1233 if (error_mask1) 1234 iscsi_init2.error_bit_map[0] = error_mask1; 1235 else 1236 iscsi_init2.error_bit_map[0] = (u32) mask64; 1237 1238 if (error_mask2) 1239 iscsi_init2.error_bit_map[1] = error_mask2; 1240 else 1241 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); 1242 1243 iscsi_error_mask = mask64; 1244 1245 kwqe_arr[0] = (struct kwqe *) &iscsi_init; 1246 kwqe_arr[1] = (struct kwqe *) &iscsi_init2; 1247 1248 if (hba->cnic && hba->cnic->submit_kwqes) 1249 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); 1250 return rc; 1251 } 1252 1253 1254 /** 1255 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. 1256 * @conn: iscsi connection 1257 * @cqe: pointer to newly DMA'ed CQE entry for processing 1258 * 1259 * process SCSI CMD Response CQE & complete the request to SCSI-ML 1260 */ 1261 static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, 1262 struct bnx2i_conn *bnx2i_conn, 1263 struct cqe *cqe) 1264 { 1265 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1266 struct bnx2i_cmd_response *resp_cqe; 1267 struct bnx2i_cmd *bnx2i_cmd; 1268 struct iscsi_task *task; 1269 struct iscsi_cmd_rsp *hdr; 1270 u32 datalen = 0; 1271 1272 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1273 spin_lock(&session->lock); 1274 task = iscsi_itt_to_task(conn, 1275 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); 1276 if (!task) 1277 goto fail; 1278 1279 bnx2i_cmd = task->dd_data; 1280 1281 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { 1282 conn->datain_pdus_cnt += 1283 resp_cqe->task_stat.read_stat.num_data_outs; 1284 conn->rxdata_octets += 1285 bnx2i_cmd->req.total_data_transfer_length; 1286 } else { 1287 conn->dataout_pdus_cnt += 1288 resp_cqe->task_stat.read_stat.num_data_outs; 1289 conn->r2t_pdus_cnt += 1290 resp_cqe->task_stat.read_stat.num_r2ts; 1291 conn->txdata_octets += 1292 bnx2i_cmd->req.total_data_transfer_length; 1293 } 1294 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); 1295 1296 hdr = (struct iscsi_cmd_rsp *)task->hdr; 1297 resp_cqe = (struct bnx2i_cmd_response *)cqe; 1298 hdr->opcode = resp_cqe->op_code; 1299 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); 1300 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); 1301 hdr->response = resp_cqe->response; 1302 hdr->cmd_status = resp_cqe->status; 1303 hdr->flags = resp_cqe->response_flags; 1304 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); 1305 1306 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) 1307 goto done; 1308 1309 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { 1310 datalen = resp_cqe->data_length; 1311 if (datalen < 2) 1312 goto done; 1313 1314 if (datalen > BNX2I_RQ_WQE_SIZE) { 1315 iscsi_conn_printk(KERN_ERR, conn, 1316 "sense data len %d > RQ sz\n", 1317 datalen); 1318 datalen = BNX2I_RQ_WQE_SIZE; 1319 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { 1320 iscsi_conn_printk(KERN_ERR, conn, 1321 "sense data len %d > conn data\n", 1322 datalen); 1323 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; 1324 } 1325 1326 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); 1327 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); 1328 } 1329 1330 done: 1331 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 1332 conn->data, datalen); 1333 fail: 1334 spin_unlock(&session->lock); 1335 return 0; 1336 } 1337 1338 1339 /** 1340 * bnx2i_process_login_resp - this function handles iscsi login response 1341 * @session: iscsi session pointer 1342 * @bnx2i_conn: iscsi connection pointer 1343 * @cqe: pointer to newly DMA'ed CQE entry for processing 1344 * 1345 * process Login Response CQE & complete it to open-iscsi user daemon 1346 */ 1347 static int bnx2i_process_login_resp(struct iscsi_session *session, 1348 struct bnx2i_conn *bnx2i_conn, 1349 struct cqe *cqe) 1350 { 1351 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1352 struct iscsi_task *task; 1353 struct bnx2i_login_response *login; 1354 struct iscsi_login_rsp *resp_hdr; 1355 int pld_len; 1356 int pad_len; 1357 1358 login = (struct bnx2i_login_response *) cqe; 1359 spin_lock(&session->lock); 1360 task = iscsi_itt_to_task(conn, 1361 login->itt & ISCSI_LOGIN_RESPONSE_INDEX); 1362 if (!task) 1363 goto done; 1364 1365 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1366 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1367 resp_hdr->opcode = login->op_code; 1368 resp_hdr->flags = login->response_flags; 1369 resp_hdr->max_version = login->version_max; 1370 resp_hdr->active_version = login->version_active; 1371 resp_hdr->hlength = 0; 1372 1373 hton24(resp_hdr->dlength, login->data_length); 1374 memcpy(resp_hdr->isid, &login->isid_lo, 6); 1375 resp_hdr->tsih = cpu_to_be16(login->tsih); 1376 resp_hdr->itt = task->hdr->itt; 1377 resp_hdr->statsn = cpu_to_be32(login->stat_sn); 1378 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); 1379 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); 1380 resp_hdr->status_class = login->status_class; 1381 resp_hdr->status_detail = login->status_detail; 1382 pld_len = login->data_length; 1383 bnx2i_conn->gen_pdu.resp_wr_ptr = 1384 bnx2i_conn->gen_pdu.resp_buf + pld_len; 1385 1386 pad_len = 0; 1387 if (pld_len & 0x3) 1388 pad_len = 4 - (pld_len % 4); 1389 1390 if (pad_len) { 1391 int i = 0; 1392 for (i = 0; i < pad_len; i++) { 1393 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; 1394 bnx2i_conn->gen_pdu.resp_wr_ptr++; 1395 } 1396 } 1397 1398 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, 1399 bnx2i_conn->gen_pdu.resp_buf, 1400 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); 1401 done: 1402 spin_unlock(&session->lock); 1403 return 0; 1404 } 1405 1406 /** 1407 * bnx2i_process_tmf_resp - this function handles iscsi TMF response 1408 * @session: iscsi session pointer 1409 * @bnx2i_conn: iscsi connection pointer 1410 * @cqe: pointer to newly DMA'ed CQE entry for processing 1411 * 1412 * process iSCSI TMF Response CQE and wake up the driver eh thread. 1413 */ 1414 static int bnx2i_process_tmf_resp(struct iscsi_session *session, 1415 struct bnx2i_conn *bnx2i_conn, 1416 struct cqe *cqe) 1417 { 1418 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1419 struct iscsi_task *task; 1420 struct bnx2i_tmf_response *tmf_cqe; 1421 struct iscsi_tm_rsp *resp_hdr; 1422 1423 tmf_cqe = (struct bnx2i_tmf_response *)cqe; 1424 spin_lock(&session->lock); 1425 task = iscsi_itt_to_task(conn, 1426 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); 1427 if (!task) 1428 goto done; 1429 1430 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1431 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1432 resp_hdr->opcode = tmf_cqe->op_code; 1433 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); 1434 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); 1435 resp_hdr->itt = task->hdr->itt; 1436 resp_hdr->response = tmf_cqe->response; 1437 1438 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1439 done: 1440 spin_unlock(&session->lock); 1441 return 0; 1442 } 1443 1444 /** 1445 * bnx2i_process_logout_resp - this function handles iscsi logout response 1446 * @session: iscsi session pointer 1447 * @bnx2i_conn: iscsi connection pointer 1448 * @cqe: pointer to newly DMA'ed CQE entry for processing 1449 * 1450 * process iSCSI Logout Response CQE & make function call to 1451 * notify the user daemon. 1452 */ 1453 static int bnx2i_process_logout_resp(struct iscsi_session *session, 1454 struct bnx2i_conn *bnx2i_conn, 1455 struct cqe *cqe) 1456 { 1457 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1458 struct iscsi_task *task; 1459 struct bnx2i_logout_response *logout; 1460 struct iscsi_logout_rsp *resp_hdr; 1461 1462 logout = (struct bnx2i_logout_response *) cqe; 1463 spin_lock(&session->lock); 1464 task = iscsi_itt_to_task(conn, 1465 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); 1466 if (!task) 1467 goto done; 1468 1469 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; 1470 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1471 resp_hdr->opcode = logout->op_code; 1472 resp_hdr->flags = logout->response; 1473 resp_hdr->hlength = 0; 1474 1475 resp_hdr->itt = task->hdr->itt; 1476 resp_hdr->statsn = task->hdr->exp_statsn; 1477 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); 1478 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); 1479 1480 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); 1481 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); 1482 1483 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 1484 done: 1485 spin_unlock(&session->lock); 1486 return 0; 1487 } 1488 1489 /** 1490 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE 1491 * @session: iscsi session pointer 1492 * @bnx2i_conn: iscsi connection pointer 1493 * @cqe: pointer to newly DMA'ed CQE entry for processing 1494 * 1495 * process iSCSI NOPIN local completion CQE, frees IIT and command structures 1496 */ 1497 static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, 1498 struct bnx2i_conn *bnx2i_conn, 1499 struct cqe *cqe) 1500 { 1501 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1502 struct bnx2i_nop_in_msg *nop_in; 1503 struct iscsi_task *task; 1504 1505 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1506 spin_lock(&session->lock); 1507 task = iscsi_itt_to_task(conn, 1508 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); 1509 if (task) 1510 iscsi_put_task(task); 1511 spin_unlock(&session->lock); 1512 } 1513 1514 /** 1515 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd 1516 * @conn: iscsi connection 1517 * 1518 * Firmware advances RQ producer index for every unsolicited PDU even if 1519 * payload data length is '0'. This function makes corresponding 1520 * adjustments on the driver side to match this f/w behavior 1521 */ 1522 static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) 1523 { 1524 char dummy_rq_data[2]; 1525 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); 1526 bnx2i_put_rq_buf(bnx2i_conn, 1); 1527 } 1528 1529 1530 /** 1531 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE 1532 * @session: iscsi session pointer 1533 * @bnx2i_conn: iscsi connection pointer 1534 * @cqe: pointer to newly DMA'ed CQE entry for processing 1535 * 1536 * process iSCSI target's proactive iSCSI NOPIN request 1537 */ 1538 static int bnx2i_process_nopin_mesg(struct iscsi_session *session, 1539 struct bnx2i_conn *bnx2i_conn, 1540 struct cqe *cqe) 1541 { 1542 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1543 struct iscsi_task *task; 1544 struct bnx2i_nop_in_msg *nop_in; 1545 struct iscsi_nopin *hdr; 1546 u32 itt; 1547 int tgt_async_nop = 0; 1548 1549 nop_in = (struct bnx2i_nop_in_msg *)cqe; 1550 itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX; 1551 1552 spin_lock(&session->lock); 1553 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; 1554 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1555 hdr->opcode = nop_in->op_code; 1556 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); 1557 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); 1558 hdr->ttt = cpu_to_be32(nop_in->ttt); 1559 1560 if (itt == (u16) RESERVED_ITT) { 1561 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1562 hdr->itt = RESERVED_ITT; 1563 tgt_async_nop = 1; 1564 goto done; 1565 } 1566 1567 /* this is a response to one of our nop-outs */ 1568 task = iscsi_itt_to_task(conn, itt); 1569 if (task) { 1570 hdr->flags = ISCSI_FLAG_CMD_FINAL; 1571 hdr->itt = task->hdr->itt; 1572 hdr->ttt = cpu_to_be32(nop_in->ttt); 1573 memcpy(hdr->lun, nop_in->lun, 8); 1574 } 1575 done: 1576 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); 1577 spin_unlock(&session->lock); 1578 1579 return tgt_async_nop; 1580 } 1581 1582 1583 /** 1584 * bnx2i_process_async_mesg - this function handles iscsi async message 1585 * @session: iscsi session pointer 1586 * @bnx2i_conn: iscsi connection pointer 1587 * @cqe: pointer to newly DMA'ed CQE entry for processing 1588 * 1589 * process iSCSI ASYNC Message 1590 */ 1591 static void bnx2i_process_async_mesg(struct iscsi_session *session, 1592 struct bnx2i_conn *bnx2i_conn, 1593 struct cqe *cqe) 1594 { 1595 struct bnx2i_async_msg *async_cqe; 1596 struct iscsi_async *resp_hdr; 1597 u8 async_event; 1598 1599 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1600 1601 async_cqe = (struct bnx2i_async_msg *)cqe; 1602 async_event = async_cqe->async_event; 1603 1604 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { 1605 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, 1606 "async: scsi events not supported\n"); 1607 return; 1608 } 1609 1610 spin_lock(&session->lock); 1611 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; 1612 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 1613 resp_hdr->opcode = async_cqe->op_code; 1614 resp_hdr->flags = 0x80; 1615 1616 memcpy(resp_hdr->lun, async_cqe->lun, 8); 1617 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); 1618 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); 1619 1620 resp_hdr->async_event = async_cqe->async_event; 1621 resp_hdr->async_vcode = async_cqe->async_vcode; 1622 1623 resp_hdr->param1 = cpu_to_be16(async_cqe->param1); 1624 resp_hdr->param2 = cpu_to_be16(async_cqe->param2); 1625 resp_hdr->param3 = cpu_to_be16(async_cqe->param3); 1626 1627 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, 1628 (struct iscsi_hdr *)resp_hdr, NULL, 0); 1629 spin_unlock(&session->lock); 1630 } 1631 1632 1633 /** 1634 * bnx2i_process_reject_mesg - process iscsi reject pdu 1635 * @session: iscsi session pointer 1636 * @bnx2i_conn: iscsi connection pointer 1637 * @cqe: pointer to newly DMA'ed CQE entry for processing 1638 * 1639 * process iSCSI REJECT message 1640 */ 1641 static void bnx2i_process_reject_mesg(struct iscsi_session *session, 1642 struct bnx2i_conn *bnx2i_conn, 1643 struct cqe *cqe) 1644 { 1645 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1646 struct bnx2i_reject_msg *reject; 1647 struct iscsi_reject *hdr; 1648 1649 reject = (struct bnx2i_reject_msg *) cqe; 1650 if (reject->data_length) { 1651 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); 1652 bnx2i_put_rq_buf(bnx2i_conn, 1); 1653 } else 1654 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); 1655 1656 spin_lock(&session->lock); 1657 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; 1658 memset(hdr, 0, sizeof(struct iscsi_hdr)); 1659 hdr->opcode = reject->op_code; 1660 hdr->reason = reject->reason; 1661 hton24(hdr->dlength, reject->data_length); 1662 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); 1663 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); 1664 hdr->ffffffff = cpu_to_be32(RESERVED_ITT); 1665 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, 1666 reject->data_length); 1667 spin_unlock(&session->lock); 1668 } 1669 1670 /** 1671 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion 1672 * @session: iscsi session pointer 1673 * @bnx2i_conn: iscsi connection pointer 1674 * @cqe: pointer to newly DMA'ed CQE entry for processing 1675 * 1676 * process command cleanup response CQE during conn shutdown or error recovery 1677 */ 1678 static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, 1679 struct bnx2i_conn *bnx2i_conn, 1680 struct cqe *cqe) 1681 { 1682 struct bnx2i_cleanup_response *cmd_clean_rsp; 1683 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1684 struct iscsi_task *task; 1685 1686 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; 1687 spin_lock(&session->lock); 1688 task = iscsi_itt_to_task(conn, 1689 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1690 if (!task) 1691 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", 1692 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); 1693 spin_unlock(&session->lock); 1694 complete(&bnx2i_conn->cmd_cleanup_cmpl); 1695 } 1696 1697 1698 1699 /** 1700 * bnx2i_process_new_cqes - process newly DMA'ed CQE's 1701 * @bnx2i_conn: iscsi connection 1702 * 1703 * this function is called by generic KCQ handler to process all pending CQE's 1704 */ 1705 static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) 1706 { 1707 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; 1708 struct iscsi_session *session = conn->session; 1709 struct qp_info *qp = &bnx2i_conn->ep->qp; 1710 struct bnx2i_nop_in_msg *nopin; 1711 int tgt_async_msg; 1712 1713 while (1) { 1714 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; 1715 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) 1716 break; 1717 1718 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) 1719 break; 1720 1721 tgt_async_msg = 0; 1722 1723 switch (nopin->op_code) { 1724 case ISCSI_OP_SCSI_CMD_RSP: 1725 case ISCSI_OP_SCSI_DATA_IN: 1726 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, 1727 qp->cq_cons_qe); 1728 break; 1729 case ISCSI_OP_LOGIN_RSP: 1730 bnx2i_process_login_resp(session, bnx2i_conn, 1731 qp->cq_cons_qe); 1732 break; 1733 case ISCSI_OP_SCSI_TMFUNC_RSP: 1734 bnx2i_process_tmf_resp(session, bnx2i_conn, 1735 qp->cq_cons_qe); 1736 break; 1737 case ISCSI_OP_LOGOUT_RSP: 1738 bnx2i_process_logout_resp(session, bnx2i_conn, 1739 qp->cq_cons_qe); 1740 break; 1741 case ISCSI_OP_NOOP_IN: 1742 if (bnx2i_process_nopin_mesg(session, bnx2i_conn, 1743 qp->cq_cons_qe)) 1744 tgt_async_msg = 1; 1745 break; 1746 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: 1747 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, 1748 qp->cq_cons_qe); 1749 break; 1750 case ISCSI_OP_ASYNC_EVENT: 1751 bnx2i_process_async_mesg(session, bnx2i_conn, 1752 qp->cq_cons_qe); 1753 tgt_async_msg = 1; 1754 break; 1755 case ISCSI_OP_REJECT: 1756 bnx2i_process_reject_mesg(session, bnx2i_conn, 1757 qp->cq_cons_qe); 1758 break; 1759 case ISCSI_OPCODE_CLEANUP_RESPONSE: 1760 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, 1761 qp->cq_cons_qe); 1762 break; 1763 default: 1764 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 1765 nopin->op_code); 1766 } 1767 1768 if (!tgt_async_msg) 1769 bnx2i_conn->ep->num_active_cmds--; 1770 1771 /* clear out in production version only, till beta keep opcode 1772 * field intact, will be helpful in debugging (context dump) 1773 * nopin->op_code = 0; 1774 */ 1775 qp->cqe_exp_seq_sn++; 1776 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) 1777 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; 1778 1779 if (qp->cq_cons_qe == qp->cq_last_qe) { 1780 qp->cq_cons_qe = qp->cq_first_qe; 1781 qp->cq_cons_idx = 0; 1782 } else { 1783 qp->cq_cons_qe++; 1784 qp->cq_cons_idx++; 1785 } 1786 } 1787 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); 1788 } 1789 1790 /** 1791 * bnx2i_fastpath_notification - process global event queue (KCQ) 1792 * @hba: adapter structure pointer 1793 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry 1794 * 1795 * Fast path event notification handler, KCQ entry carries context id 1796 * of the connection that has 1 or more pending CQ entries 1797 */ 1798 static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, 1799 struct iscsi_kcqe *new_cqe_kcqe) 1800 { 1801 struct bnx2i_conn *conn; 1802 u32 iscsi_cid; 1803 1804 iscsi_cid = new_cqe_kcqe->iscsi_conn_id; 1805 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1806 1807 if (!conn) { 1808 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); 1809 return; 1810 } 1811 if (!conn->ep) { 1812 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); 1813 return; 1814 } 1815 1816 bnx2i_process_new_cqes(conn); 1817 } 1818 1819 1820 /** 1821 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE 1822 * @hba: adapter structure pointer 1823 * @update_kcqe: kcqe pointer 1824 * 1825 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration 1826 */ 1827 static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, 1828 struct iscsi_kcqe *update_kcqe) 1829 { 1830 struct bnx2i_conn *conn; 1831 u32 iscsi_cid; 1832 1833 iscsi_cid = update_kcqe->iscsi_conn_id; 1834 conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1835 1836 if (!conn) { 1837 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); 1838 return; 1839 } 1840 if (!conn->ep) { 1841 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); 1842 return; 1843 } 1844 1845 if (update_kcqe->completion_status) { 1846 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); 1847 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; 1848 } else 1849 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; 1850 1851 wake_up_interruptible(&conn->ep->ofld_wait); 1852 } 1853 1854 1855 /** 1856 * bnx2i_recovery_que_add_conn - add connection to recovery queue 1857 * @hba: adapter structure pointer 1858 * @bnx2i_conn: iscsi connection 1859 * 1860 * Add connection to recovery queue and schedule adapter eh worker 1861 */ 1862 static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, 1863 struct bnx2i_conn *bnx2i_conn) 1864 { 1865 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, 1866 ISCSI_ERR_CONN_FAILED); 1867 } 1868 1869 1870 /** 1871 * bnx2i_process_tcp_error - process error notification on a given connection 1872 * 1873 * @hba: adapter structure pointer 1874 * @tcp_err: tcp error kcqe pointer 1875 * 1876 * handles tcp level error notifications from FW. 1877 */ 1878 static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, 1879 struct iscsi_kcqe *tcp_err) 1880 { 1881 struct bnx2i_conn *bnx2i_conn; 1882 u32 iscsi_cid; 1883 1884 iscsi_cid = tcp_err->iscsi_conn_id; 1885 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1886 1887 if (!bnx2i_conn) { 1888 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1889 return; 1890 } 1891 1892 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", 1893 iscsi_cid, tcp_err->completion_status); 1894 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 1895 } 1896 1897 1898 /** 1899 * bnx2i_process_iscsi_error - process error notification on a given connection 1900 * @hba: adapter structure pointer 1901 * @iscsi_err: iscsi error kcqe pointer 1902 * 1903 * handles iscsi error notifications from the FW. Firmware based in initial 1904 * handshake classifies iscsi protocol / TCP rfc violation into either 1905 * warning or error indications. If indication is of "Error" type, driver 1906 * will initiate session recovery for that connection/session. For 1907 * "Warning" type indication, driver will put out a system log message 1908 * (there will be only one message for each type for the life of the 1909 * session, this is to avoid un-necessarily overloading the system) 1910 */ 1911 static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, 1912 struct iscsi_kcqe *iscsi_err) 1913 { 1914 struct bnx2i_conn *bnx2i_conn; 1915 u32 iscsi_cid; 1916 char warn_notice[] = "iscsi_warning"; 1917 char error_notice[] = "iscsi_error"; 1918 char additional_notice[64]; 1919 char *message; 1920 int need_recovery; 1921 u64 err_mask64; 1922 1923 iscsi_cid = iscsi_err->iscsi_conn_id; 1924 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); 1925 if (!bnx2i_conn) { 1926 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); 1927 return; 1928 } 1929 1930 err_mask64 = (0x1ULL << iscsi_err->completion_status); 1931 1932 if (err_mask64 & iscsi_error_mask) { 1933 need_recovery = 0; 1934 message = warn_notice; 1935 } else { 1936 need_recovery = 1; 1937 message = error_notice; 1938 } 1939 1940 switch (iscsi_err->completion_status) { 1941 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: 1942 strcpy(additional_notice, "hdr digest err"); 1943 break; 1944 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: 1945 strcpy(additional_notice, "data digest err"); 1946 break; 1947 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: 1948 strcpy(additional_notice, "wrong opcode rcvd"); 1949 break; 1950 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: 1951 strcpy(additional_notice, "AHS len > 0 rcvd"); 1952 break; 1953 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: 1954 strcpy(additional_notice, "invalid ITT rcvd"); 1955 break; 1956 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: 1957 strcpy(additional_notice, "wrong StatSN rcvd"); 1958 break; 1959 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: 1960 strcpy(additional_notice, "wrong DataSN rcvd"); 1961 break; 1962 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: 1963 strcpy(additional_notice, "pend R2T violation"); 1964 break; 1965 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: 1966 strcpy(additional_notice, "ERL0, UO"); 1967 break; 1968 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: 1969 strcpy(additional_notice, "ERL0, U1"); 1970 break; 1971 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: 1972 strcpy(additional_notice, "ERL0, U2"); 1973 break; 1974 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: 1975 strcpy(additional_notice, "ERL0, U3"); 1976 break; 1977 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: 1978 strcpy(additional_notice, "ERL0, U4"); 1979 break; 1980 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: 1981 strcpy(additional_notice, "ERL0, U5"); 1982 break; 1983 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: 1984 strcpy(additional_notice, "ERL0, U6"); 1985 break; 1986 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: 1987 strcpy(additional_notice, "invalid resi len"); 1988 break; 1989 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: 1990 strcpy(additional_notice, "MRDSL violation"); 1991 break; 1992 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: 1993 strcpy(additional_notice, "F-bit not set"); 1994 break; 1995 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: 1996 strcpy(additional_notice, "invalid TTT"); 1997 break; 1998 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: 1999 strcpy(additional_notice, "invalid DataSN"); 2000 break; 2001 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: 2002 strcpy(additional_notice, "burst len violation"); 2003 break; 2004 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: 2005 strcpy(additional_notice, "buf offset violation"); 2006 break; 2007 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: 2008 strcpy(additional_notice, "invalid LUN field"); 2009 break; 2010 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: 2011 strcpy(additional_notice, "invalid R2TSN field"); 2012 break; 2013 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ 2014 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 2015 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: 2016 strcpy(additional_notice, "invalid cmd len1"); 2017 break; 2018 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ 2019 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 2020 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: 2021 strcpy(additional_notice, "invalid cmd len2"); 2022 break; 2023 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: 2024 strcpy(additional_notice, 2025 "pend r2t exceeds MaxOutstandingR2T value"); 2026 break; 2027 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: 2028 strcpy(additional_notice, "TTT is rsvd"); 2029 break; 2030 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: 2031 strcpy(additional_notice, "MBL violation"); 2032 break; 2033 #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ 2034 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO 2035 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: 2036 strcpy(additional_notice, "data seg len != 0"); 2037 break; 2038 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: 2039 strcpy(additional_notice, "reject pdu len error"); 2040 break; 2041 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: 2042 strcpy(additional_notice, "async pdu len error"); 2043 break; 2044 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: 2045 strcpy(additional_notice, "nopin pdu len error"); 2046 break; 2047 #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ 2048 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP 2049 case BNX2_ERR_PEND_R2T_IN_CLEANUP: 2050 strcpy(additional_notice, "pend r2t in cleanup"); 2051 break; 2052 2053 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: 2054 strcpy(additional_notice, "IP fragments rcvd"); 2055 break; 2056 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: 2057 strcpy(additional_notice, "IP options error"); 2058 break; 2059 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: 2060 strcpy(additional_notice, "urgent flag error"); 2061 break; 2062 default: 2063 printk(KERN_ALERT "iscsi_err - unknown err %x\n", 2064 iscsi_err->completion_status); 2065 } 2066 2067 if (need_recovery) { 2068 iscsi_conn_printk(KERN_ALERT, 2069 bnx2i_conn->cls_conn->dd_data, 2070 "bnx2i: %s - %s\n", 2071 message, additional_notice); 2072 2073 iscsi_conn_printk(KERN_ALERT, 2074 bnx2i_conn->cls_conn->dd_data, 2075 "conn_err - hostno %d conn %p, " 2076 "iscsi_cid %x cid %x\n", 2077 bnx2i_conn->hba->shost->host_no, 2078 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, 2079 bnx2i_conn->ep->ep_cid); 2080 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); 2081 } else 2082 if (!test_and_set_bit(iscsi_err->completion_status, 2083 (void *) &bnx2i_conn->violation_notified)) 2084 iscsi_conn_printk(KERN_ALERT, 2085 bnx2i_conn->cls_conn->dd_data, 2086 "bnx2i: %s - %s\n", 2087 message, additional_notice); 2088 } 2089 2090 2091 /** 2092 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion 2093 * @hba: adapter structure pointer 2094 * @conn_destroy: conn destroy kcqe pointer 2095 * 2096 * handles connection destroy completion request. 2097 */ 2098 static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, 2099 struct iscsi_kcqe *conn_destroy) 2100 { 2101 struct bnx2i_endpoint *ep; 2102 2103 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); 2104 if (!ep) { 2105 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " 2106 "offload request, unexpected complection\n"); 2107 return; 2108 } 2109 2110 if (hba != ep->hba) { 2111 printk(KERN_ALERT "conn destroy- error hba mis-match\n"); 2112 return; 2113 } 2114 2115 if (conn_destroy->completion_status) { 2116 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); 2117 ep->state = EP_STATE_CLEANUP_FAILED; 2118 } else 2119 ep->state = EP_STATE_CLEANUP_CMPL; 2120 wake_up_interruptible(&ep->ofld_wait); 2121 } 2122 2123 2124 /** 2125 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion 2126 * @hba: adapter structure pointer 2127 * @ofld_kcqe: conn offload kcqe pointer 2128 * 2129 * handles initial connection offload completion, ep_connect() thread is 2130 * woken-up to continue with LLP connect process 2131 */ 2132 static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, 2133 struct iscsi_kcqe *ofld_kcqe) 2134 { 2135 u32 cid_addr; 2136 struct bnx2i_endpoint *ep; 2137 u32 cid_num; 2138 2139 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); 2140 if (!ep) { 2141 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); 2142 return; 2143 } 2144 2145 if (hba != ep->hba) { 2146 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); 2147 return; 2148 } 2149 2150 if (ofld_kcqe->completion_status) { 2151 if (ofld_kcqe->completion_status == 2152 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) 2153 printk(KERN_ALERT "bnx2i: unable to allocate" 2154 " iSCSI context resources\n"); 2155 ep->state = EP_STATE_OFLD_FAILED; 2156 } else { 2157 ep->state = EP_STATE_OFLD_COMPL; 2158 cid_addr = ofld_kcqe->iscsi_conn_context_id; 2159 cid_num = bnx2i_get_cid_num(ep); 2160 ep->ep_cid = cid_addr; 2161 ep->qp.ctx_base = NULL; 2162 } 2163 wake_up_interruptible(&ep->ofld_wait); 2164 } 2165 2166 /** 2167 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE 2168 * @hba: adapter structure pointer 2169 * @update_kcqe: kcqe pointer 2170 * 2171 * Generic KCQ event handler/dispatcher 2172 */ 2173 static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], 2174 u32 num_cqe) 2175 { 2176 struct bnx2i_hba *hba = context; 2177 int i = 0; 2178 struct iscsi_kcqe *ikcqe = NULL; 2179 2180 while (i < num_cqe) { 2181 ikcqe = (struct iscsi_kcqe *) kcqe[i++]; 2182 2183 if (ikcqe->op_code == 2184 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) 2185 bnx2i_fastpath_notification(hba, ikcqe); 2186 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) 2187 bnx2i_process_ofld_cmpl(hba, ikcqe); 2188 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) 2189 bnx2i_process_update_conn_cmpl(hba, ikcqe); 2190 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { 2191 if (ikcqe->completion_status != 2192 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) 2193 bnx2i_iscsi_license_error(hba, ikcqe->\ 2194 completion_status); 2195 else { 2196 set_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2197 bnx2i_get_link_state(hba); 2198 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " 2199 "ISCSI_INIT passed\n", 2200 (u8)hba->pcidev->bus->number, 2201 hba->pci_devno, 2202 (u8)hba->pci_func); 2203 2204 2205 } 2206 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) 2207 bnx2i_process_conn_destroy_cmpl(hba, ikcqe); 2208 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) 2209 bnx2i_process_iscsi_error(hba, ikcqe); 2210 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) 2211 bnx2i_process_tcp_error(hba, ikcqe); 2212 else 2213 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", 2214 ikcqe->op_code); 2215 } 2216 } 2217 2218 2219 /** 2220 * bnx2i_indicate_netevent - Generic netdev event handler 2221 * @context: adapter structure pointer 2222 * @event: event type 2223 * 2224 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, 2225 * NETDEV_GOING_DOWN and NETDEV_CHANGE 2226 */ 2227 static void bnx2i_indicate_netevent(void *context, unsigned long event) 2228 { 2229 struct bnx2i_hba *hba = context; 2230 2231 switch (event) { 2232 case NETDEV_UP: 2233 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) 2234 bnx2i_send_fw_iscsi_init_msg(hba); 2235 break; 2236 case NETDEV_DOWN: 2237 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2238 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); 2239 break; 2240 case NETDEV_GOING_DOWN: 2241 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); 2242 iscsi_host_for_each_session(hba->shost, 2243 bnx2i_drop_session); 2244 break; 2245 case NETDEV_CHANGE: 2246 bnx2i_get_link_state(hba); 2247 break; 2248 default: 2249 ; 2250 } 2251 } 2252 2253 2254 /** 2255 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion 2256 * @cm_sk: cnic sock structure pointer 2257 * 2258 * function callback exported via bnx2i - cnic driver interface to 2259 * indicate completion of option-2 TCP connect request. 2260 */ 2261 static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) 2262 { 2263 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2264 2265 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) 2266 ep->state = EP_STATE_CONNECT_FAILED; 2267 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) 2268 ep->state = EP_STATE_CONNECT_COMPL; 2269 else 2270 ep->state = EP_STATE_CONNECT_FAILED; 2271 2272 wake_up_interruptible(&ep->ofld_wait); 2273 } 2274 2275 2276 /** 2277 * bnx2i_cm_close_cmpl - process tcp conn close completion 2278 * @cm_sk: cnic sock structure pointer 2279 * 2280 * function callback exported via bnx2i - cnic driver interface to 2281 * indicate completion of option-2 graceful TCP connect shutdown 2282 */ 2283 static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) 2284 { 2285 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2286 2287 ep->state = EP_STATE_DISCONN_COMPL; 2288 wake_up_interruptible(&ep->ofld_wait); 2289 } 2290 2291 2292 /** 2293 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion 2294 * @cm_sk: cnic sock structure pointer 2295 * 2296 * function callback exported via bnx2i - cnic driver interface to 2297 * indicate completion of option-2 abortive TCP connect termination 2298 */ 2299 static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) 2300 { 2301 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2302 2303 ep->state = EP_STATE_DISCONN_COMPL; 2304 wake_up_interruptible(&ep->ofld_wait); 2305 } 2306 2307 2308 /** 2309 * bnx2i_cm_remote_close - process received TCP FIN 2310 * @hba: adapter structure pointer 2311 * @update_kcqe: kcqe pointer 2312 * 2313 * function callback exported via bnx2i - cnic driver interface to indicate 2314 * async TCP events such as FIN 2315 */ 2316 static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) 2317 { 2318 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2319 2320 ep->state = EP_STATE_TCP_FIN_RCVD; 2321 if (ep->conn) 2322 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2323 } 2324 2325 /** 2326 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup 2327 * @hba: adapter structure pointer 2328 * @update_kcqe: kcqe pointer 2329 * 2330 * function callback exported via bnx2i - cnic driver interface to 2331 * indicate async TCP events (RST) sent by the peer. 2332 */ 2333 static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) 2334 { 2335 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; 2336 2337 ep->state = EP_STATE_TCP_RST_RCVD; 2338 if (ep->conn) 2339 bnx2i_recovery_que_add_conn(ep->hba, ep->conn); 2340 } 2341 2342 2343 static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type, 2344 char *buf, u16 buflen) 2345 { 2346 struct bnx2i_hba *hba; 2347 2348 hba = bnx2i_find_hba_for_cnic(dev); 2349 if (!hba) 2350 return; 2351 2352 if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, 2353 msg_type, buf, buflen)) 2354 printk(KERN_ALERT "bnx2i: private nl message send error\n"); 2355 2356 } 2357 2358 2359 /** 2360 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure 2361 * carrying callback function pointers 2362 * 2363 */ 2364 struct cnic_ulp_ops bnx2i_cnic_cb = { 2365 .cnic_init = bnx2i_ulp_init, 2366 .cnic_exit = bnx2i_ulp_exit, 2367 .cnic_start = bnx2i_start, 2368 .cnic_stop = bnx2i_stop, 2369 .indicate_kcqes = bnx2i_indicate_kcqe, 2370 .indicate_netevent = bnx2i_indicate_netevent, 2371 .cm_connect_complete = bnx2i_cm_connect_cmpl, 2372 .cm_close_complete = bnx2i_cm_close_cmpl, 2373 .cm_abort_complete = bnx2i_cm_abort_cmpl, 2374 .cm_remote_close = bnx2i_cm_remote_close, 2375 .cm_remote_abort = bnx2i_cm_remote_abort, 2376 .iscsi_nl_send_msg = bnx2i_send_nl_mesg, 2377 .owner = THIS_MODULE 2378 }; 2379 2380 2381 /** 2382 * bnx2i_map_ep_dbell_regs - map connection doorbell registers 2383 * @ep: bnx2i endpoint 2384 * 2385 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these 2386 * register in BAR #0. Whereas in 57710 these register are accessed by 2387 * mapping BAR #1 2388 */ 2389 int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) 2390 { 2391 u32 cid_num; 2392 u32 reg_off; 2393 u32 first_l4l5; 2394 u32 ctx_sz; 2395 u32 config2; 2396 resource_size_t reg_base; 2397 2398 cid_num = bnx2i_get_cid_num(ep); 2399 2400 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { 2401 reg_base = pci_resource_start(ep->hba->pcidev, 2402 BNX2X_DOORBELL_PCI_BAR); 2403 reg_off = PAGE_SIZE * (cid_num & 0x1FFFF) + DPM_TRIGER_TYPE; 2404 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); 2405 goto arm_cq; 2406 } 2407 2408 reg_base = ep->hba->netdev->base_addr; 2409 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && 2410 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { 2411 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); 2412 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; 2413 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; 2414 if (ctx_sz) 2415 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE 2416 + BNX2I_570X_PAGE_SIZE_DEFAULT * 2417 (((cid_num - first_l4l5) / ctx_sz) + 256); 2418 else 2419 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2420 } else 2421 /* 5709 device in normal node and 5706/5708 devices */ 2422 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); 2423 2424 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 2425 MB_KERNEL_CTX_SIZE); 2426 if (!ep->qp.ctx_base) 2427 return -ENOMEM; 2428 2429 arm_cq: 2430 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); 2431 return 0; 2432 } 2433