1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/types.h> 34 #include <asm/byteorder.h> 35 #include <asm/param.h> 36 #include <linux/delay.h> 37 #include <linux/dma-mapping.h> 38 #include <linux/etherdevice.h> 39 #include <linux/interrupt.h> 40 #include <linux/kernel.h> 41 #include <linux/log2.h> 42 #include <linux/module.h> 43 #include <linux/pci.h> 44 #include <linux/slab.h> 45 #include <linux/stddef.h> 46 #include <linux/string.h> 47 #include <linux/workqueue.h> 48 #include <linux/errno.h> 49 #include <linux/list.h> 50 #include <linux/spinlock.h> 51 #include <linux/qed/qed_iscsi_if.h> 52 #include "qed.h" 53 #include "qed_cxt.h" 54 #include "qed_dev_api.h" 55 #include "qed_hsi.h" 56 #include "qed_hw.h" 57 #include "qed_int.h" 58 #include "qed_iscsi.h" 59 #include "qed_ll2.h" 60 #include "qed_mcp.h" 61 #include "qed_sp.h" 62 #include "qed_sriov.h" 63 #include "qed_reg_addr.h" 64 65 struct qed_iscsi_conn { 66 struct list_head list_entry; 67 bool free_on_delete; 68 69 u16 conn_id; 70 u32 icid; 71 u32 fw_cid; 72 73 u8 layer_code; 74 u8 offl_flags; 75 u8 connect_mode; 76 u32 initial_ack; 77 dma_addr_t sq_pbl_addr; 78 struct qed_chain r2tq; 79 struct qed_chain xhq; 80 struct qed_chain uhq; 81 82 struct tcp_upload_params *tcp_upload_params_virt_addr; 83 dma_addr_t tcp_upload_params_phys_addr; 84 struct scsi_terminate_extra_params *queue_cnts_virt_addr; 85 dma_addr_t queue_cnts_phys_addr; 86 dma_addr_t syn_phy_addr; 87 88 u16 syn_ip_payload_length; 89 u8 local_mac[6]; 90 u8 remote_mac[6]; 91 u16 vlan_id; 92 u8 tcp_flags; 93 u8 ip_version; 94 u32 remote_ip[4]; 95 u32 local_ip[4]; 96 u8 ka_max_probe_cnt; 97 u8 dup_ack_theshold; 98 u32 rcv_next; 99 u32 snd_una; 100 u32 snd_next; 101 u32 snd_max; 102 u32 snd_wnd; 103 u32 rcv_wnd; 104 u32 snd_wl1; 105 u32 cwnd; 106 u32 ss_thresh; 107 u16 srtt; 108 u16 rtt_var; 109 u32 ts_time; 110 u32 ts_recent; 111 u32 ts_recent_age; 112 u32 total_rt; 113 u32 ka_timeout_delta; 114 u32 rt_timeout_delta; 115 u8 dup_ack_cnt; 116 u8 snd_wnd_probe_cnt; 117 u8 ka_probe_cnt; 118 u8 rt_cnt; 119 u32 flow_label; 120 u32 ka_timeout; 121 u32 ka_interval; 122 u32 max_rt_time; 123 u32 initial_rcv_wnd; 124 u8 ttl; 125 u8 tos_or_tc; 126 u16 remote_port; 127 u16 local_port; 128 u16 mss; 129 u8 snd_wnd_scale; 130 u8 rcv_wnd_scale; 131 u32 ts_ticks_per_second; 132 u16 da_timeout_value; 133 u8 ack_frequency; 134 135 u8 update_flag; 136 u8 default_cq; 137 u32 max_seq_size; 138 u32 max_recv_pdu_length; 139 u32 max_send_pdu_length; 140 u32 first_seq_length; 141 u32 exp_stat_sn; 142 u32 stat_sn; 143 u16 physical_q0; 144 u16 physical_q1; 145 u8 abortive_dsconnect; 146 }; 147 148 static int 149 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 150 enum spq_mode comp_mode, 151 struct qed_spq_comp_cb *p_comp_addr, 152 void *event_context, iscsi_event_cb_t async_event_cb) 153 { 154 struct iscsi_init_ramrod_params *p_ramrod = NULL; 155 struct scsi_init_func_queues *p_queue = NULL; 156 struct qed_iscsi_pf_params *p_params = NULL; 157 struct iscsi_spe_func_init *p_init = NULL; 158 struct qed_spq_entry *p_ent = NULL; 159 struct qed_sp_init_data init_data; 160 int rc = 0; 161 u32 dval; 162 u16 val; 163 u8 i; 164 165 /* Get SPQ entry */ 166 memset(&init_data, 0, sizeof(init_data)); 167 init_data.cid = qed_spq_get_cid(p_hwfn); 168 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 169 init_data.comp_mode = comp_mode; 170 init_data.p_comp_data = p_comp_addr; 171 172 rc = qed_sp_init_request(p_hwfn, &p_ent, 173 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 174 PROTOCOLID_ISCSI, &init_data); 175 if (rc) 176 return rc; 177 178 p_ramrod = &p_ent->ramrod.iscsi_init; 179 p_init = &p_ramrod->iscsi_init_spe; 180 p_params = &p_hwfn->pf_params.iscsi_pf_params; 181 p_queue = &p_init->q_params; 182 183 /* Sanity */ 184 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) { 185 DP_ERR(p_hwfn, 186 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n", 187 p_params->num_queues, 188 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]); 189 return -EINVAL; 190 } 191 192 SET_FIELD(p_init->hdr.flags, 193 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); 194 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; 195 196 val = p_params->half_way_close_timeout; 197 p_init->half_way_close_timeout = cpu_to_le16(val); 198 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 199 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 200 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 201 p_init->ooo_enable = p_params->ooo_enable; 202 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + 203 p_params->ll2_ooo_queue_id; 204 p_init->func_params.log_page_size = p_params->log_page_size; 205 val = p_params->num_tasks; 206 p_init->func_params.num_tasks = cpu_to_le16(val); 207 p_init->debug_mode.flags = p_params->debug_mode; 208 209 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 210 p_params->glbl_q_params_addr); 211 212 val = p_params->cq_num_entries; 213 p_queue->cq_num_entries = cpu_to_le16(val); 214 val = p_params->cmdq_num_entries; 215 p_queue->cmdq_num_entries = cpu_to_le16(val); 216 p_queue->num_queues = p_params->num_queues; 217 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 218 p_queue->queue_relative_offset = (u8)dval; 219 p_queue->cq_sb_pi = p_params->gl_rq_pi; 220 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 221 222 for (i = 0; i < p_params->num_queues; i++) { 223 val = p_hwfn->sbs_info[i]->igu_sb_id; 224 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 225 } 226 227 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 228 229 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 230 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 231 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 232 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 233 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 234 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 235 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 236 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 237 238 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 239 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 240 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 241 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 242 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 243 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 244 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 245 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 246 val = p_params->rq_buffer_size; 247 p_queue->rq_buffer_size = cpu_to_le16(val); 248 if (p_params->is_target) { 249 SET_FIELD(p_queue->q_validity, 250 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 251 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 252 SET_FIELD(p_queue->q_validity, 253 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 254 SET_FIELD(p_queue->q_validity, 255 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 256 } else { 257 SET_FIELD(p_queue->q_validity, 258 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 259 } 260 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 261 val = p_params->tx_sws_timer; 262 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 263 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt; 264 265 p_hwfn->p_iscsi_info->event_context = event_context; 266 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 267 268 return qed_spq_post(p_hwfn, p_ent, NULL); 269 } 270 271 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 272 struct qed_iscsi_conn *p_conn, 273 enum spq_mode comp_mode, 274 struct qed_spq_comp_cb *p_comp_addr) 275 { 276 struct iscsi_spe_conn_offload *p_ramrod = NULL; 277 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 278 struct tcp_offload_params *p_tcp = NULL; 279 struct qed_spq_entry *p_ent = NULL; 280 struct qed_sp_init_data init_data; 281 dma_addr_t r2tq_pbl_addr; 282 dma_addr_t xhq_pbl_addr; 283 dma_addr_t uhq_pbl_addr; 284 u16 physical_q; 285 int rc = 0; 286 u32 dval; 287 u16 wval; 288 u8 i; 289 u16 *p; 290 291 /* Get SPQ entry */ 292 memset(&init_data, 0, sizeof(init_data)); 293 init_data.cid = p_conn->icid; 294 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 295 init_data.comp_mode = comp_mode; 296 init_data.p_comp_data = p_comp_addr; 297 298 rc = qed_sp_init_request(p_hwfn, &p_ent, 299 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 300 PROTOCOLID_ISCSI, &init_data); 301 if (rc) 302 return rc; 303 304 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 305 306 /* Transmission PQ is the first of the PF */ 307 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 308 p_conn->physical_q0 = cpu_to_le16(physical_q); 309 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 310 311 /* iSCSI Pure-ACK PQ */ 312 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 313 p_conn->physical_q1 = cpu_to_le16(physical_q); 314 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 315 316 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; 317 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, 318 p_conn->layer_code); 319 320 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 321 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 322 323 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 324 325 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 326 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 327 328 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 329 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 330 331 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 332 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 333 334 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 335 p_ramrod->iscsi.flags = p_conn->offl_flags; 336 p_ramrod->iscsi.default_cq = p_conn->default_cq; 337 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 338 339 if (!GET_FIELD(p_ramrod->iscsi.flags, 340 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 341 p_tcp = &p_ramrod->tcp; 342 343 p = (u16 *)p_conn->local_mac; 344 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 345 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 346 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 347 348 p = (u16 *)p_conn->remote_mac; 349 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 350 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 351 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 352 353 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 354 355 p_tcp->flags = p_conn->tcp_flags; 356 p_tcp->ip_version = p_conn->ip_version; 357 for (i = 0; i < 4; i++) { 358 dval = p_conn->remote_ip[i]; 359 p_tcp->remote_ip[i] = cpu_to_le32(dval); 360 dval = p_conn->local_ip[i]; 361 p_tcp->local_ip[i] = cpu_to_le32(dval); 362 } 363 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 364 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 365 366 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 367 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 368 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 369 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 370 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 371 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 372 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 373 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 374 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 375 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 376 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 377 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 378 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 379 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 380 dval = p_conn->ka_timeout_delta; 381 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 382 dval = p_conn->rt_timeout_delta; 383 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 384 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 385 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 386 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 387 p_tcp->rt_cnt = p_conn->rt_cnt; 388 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 389 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 390 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 391 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 392 dval = p_conn->initial_rcv_wnd; 393 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 394 p_tcp->ttl = p_conn->ttl; 395 p_tcp->tos_or_tc = p_conn->tos_or_tc; 396 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 397 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 398 p_tcp->mss = cpu_to_le16(p_conn->mss); 399 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 400 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 401 wval = p_conn->da_timeout_value; 402 p_tcp->da_timeout_value = cpu_to_le16(wval); 403 p_tcp->ack_frequency = p_conn->ack_frequency; 404 p_tcp->connect_mode = p_conn->connect_mode; 405 } else { 406 p_tcp2 = 407 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 408 409 p = (u16 *)p_conn->local_mac; 410 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 411 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 412 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 413 414 p = (u16 *)p_conn->remote_mac; 415 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 416 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 417 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 418 419 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 420 p_tcp2->flags = p_conn->tcp_flags; 421 422 p_tcp2->ip_version = p_conn->ip_version; 423 for (i = 0; i < 4; i++) { 424 dval = p_conn->remote_ip[i]; 425 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 426 dval = p_conn->local_ip[i]; 427 p_tcp2->local_ip[i] = cpu_to_le32(dval); 428 } 429 430 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 431 p_tcp2->ttl = p_conn->ttl; 432 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 433 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 434 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 435 p_tcp2->mss = cpu_to_le16(p_conn->mss); 436 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 437 p_tcp2->connect_mode = p_conn->connect_mode; 438 wval = p_conn->syn_ip_payload_length; 439 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 440 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 441 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 442 } 443 444 return qed_spq_post(p_hwfn, p_ent, NULL); 445 } 446 447 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 448 struct qed_iscsi_conn *p_conn, 449 enum spq_mode comp_mode, 450 struct qed_spq_comp_cb *p_comp_addr) 451 { 452 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 453 struct qed_spq_entry *p_ent = NULL; 454 struct qed_sp_init_data init_data; 455 int rc = -EINVAL; 456 u32 dval; 457 458 /* Get SPQ entry */ 459 memset(&init_data, 0, sizeof(init_data)); 460 init_data.cid = p_conn->icid; 461 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 462 init_data.comp_mode = comp_mode; 463 init_data.p_comp_data = p_comp_addr; 464 465 rc = qed_sp_init_request(p_hwfn, &p_ent, 466 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 467 PROTOCOLID_ISCSI, &init_data); 468 if (rc) 469 return rc; 470 471 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 472 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; 473 SET_FIELD(p_ramrod->hdr.flags, 474 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 475 476 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 477 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 478 p_ramrod->flags = p_conn->update_flag; 479 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 480 dval = p_conn->max_recv_pdu_length; 481 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 482 dval = p_conn->max_send_pdu_length; 483 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 484 dval = p_conn->first_seq_length; 485 p_ramrod->first_seq_length = cpu_to_le32(dval); 486 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 487 488 return qed_spq_post(p_hwfn, p_ent, NULL); 489 } 490 491 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 492 struct qed_iscsi_conn *p_conn, 493 enum spq_mode comp_mode, 494 struct qed_spq_comp_cb *p_comp_addr) 495 { 496 struct iscsi_spe_conn_termination *p_ramrod = NULL; 497 struct qed_spq_entry *p_ent = NULL; 498 struct qed_sp_init_data init_data; 499 int rc = -EINVAL; 500 501 /* Get SPQ entry */ 502 memset(&init_data, 0, sizeof(init_data)); 503 init_data.cid = p_conn->icid; 504 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 505 init_data.comp_mode = comp_mode; 506 init_data.p_comp_data = p_comp_addr; 507 508 rc = qed_sp_init_request(p_hwfn, &p_ent, 509 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 510 PROTOCOLID_ISCSI, &init_data); 511 if (rc) 512 return rc; 513 514 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 515 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; 516 SET_FIELD(p_ramrod->hdr.flags, 517 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 518 519 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 520 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 521 p_ramrod->abortive = p_conn->abortive_dsconnect; 522 523 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 524 p_conn->tcp_upload_params_phys_addr); 525 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 526 527 return qed_spq_post(p_hwfn, p_ent, NULL); 528 } 529 530 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 531 struct qed_iscsi_conn *p_conn, 532 enum spq_mode comp_mode, 533 struct qed_spq_comp_cb *p_comp_addr) 534 { 535 struct iscsi_slow_path_hdr *p_ramrod = NULL; 536 struct qed_spq_entry *p_ent = NULL; 537 struct qed_sp_init_data init_data; 538 int rc = -EINVAL; 539 540 /* Get SPQ entry */ 541 memset(&init_data, 0, sizeof(init_data)); 542 init_data.cid = p_conn->icid; 543 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 544 init_data.comp_mode = comp_mode; 545 init_data.p_comp_data = p_comp_addr; 546 547 rc = qed_sp_init_request(p_hwfn, &p_ent, 548 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 549 PROTOCOLID_ISCSI, &init_data); 550 if (rc) 551 return rc; 552 553 p_ramrod = &p_ent->ramrod.iscsi_empty; 554 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; 555 SET_FIELD(p_ramrod->flags, 556 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 557 558 return qed_spq_post(p_hwfn, p_ent, NULL); 559 } 560 561 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 562 enum spq_mode comp_mode, 563 struct qed_spq_comp_cb *p_comp_addr) 564 { 565 struct iscsi_spe_func_dstry *p_ramrod = NULL; 566 struct qed_spq_entry *p_ent = NULL; 567 struct qed_sp_init_data init_data; 568 int rc = 0; 569 570 /* Get SPQ entry */ 571 memset(&init_data, 0, sizeof(init_data)); 572 init_data.cid = qed_spq_get_cid(p_hwfn); 573 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 574 init_data.comp_mode = comp_mode; 575 init_data.p_comp_data = p_comp_addr; 576 577 rc = qed_sp_init_request(p_hwfn, &p_ent, 578 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 579 PROTOCOLID_ISCSI, &init_data); 580 if (rc) 581 return rc; 582 583 p_ramrod = &p_ent->ramrod.iscsi_destroy; 584 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; 585 586 return qed_spq_post(p_hwfn, p_ent, NULL); 587 } 588 589 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 590 { 591 return (u8 __iomem *)p_hwfn->doorbells + 592 qed_db_addr(cid, DQ_DEMS_LEGACY); 593 } 594 595 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 596 u8 bdq_id) 597 { 598 if (RESC_NUM(p_hwfn, QED_BDQ)) { 599 return (u8 __iomem *)p_hwfn->regview + 600 GTT_BAR0_MAP_REG_MSDM_RAM + 601 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 602 QED_BDQ), 603 bdq_id); 604 } else { 605 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 606 return NULL; 607 } 608 } 609 610 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 611 u8 bdq_id) 612 { 613 if (RESC_NUM(p_hwfn, QED_BDQ)) { 614 return (u8 __iomem *)p_hwfn->regview + 615 GTT_BAR0_MAP_REG_TSDM_RAM + 616 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 617 QED_BDQ), 618 bdq_id); 619 } else { 620 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 621 return NULL; 622 } 623 } 624 625 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn, 626 struct qed_iscsi_conn *p_conn) 627 { 628 if (!p_conn->queue_cnts_virt_addr) 629 goto nomem; 630 memset(p_conn->queue_cnts_virt_addr, 0, 631 sizeof(*p_conn->queue_cnts_virt_addr)); 632 633 if (!p_conn->tcp_upload_params_virt_addr) 634 goto nomem; 635 memset(p_conn->tcp_upload_params_virt_addr, 0, 636 sizeof(*p_conn->tcp_upload_params_virt_addr)); 637 638 if (!p_conn->r2tq.p_virt_addr) 639 goto nomem; 640 qed_chain_pbl_zero_mem(&p_conn->r2tq); 641 642 if (!p_conn->uhq.p_virt_addr) 643 goto nomem; 644 qed_chain_pbl_zero_mem(&p_conn->uhq); 645 646 if (!p_conn->xhq.p_virt_addr) 647 goto nomem; 648 qed_chain_pbl_zero_mem(&p_conn->xhq); 649 650 return 0; 651 nomem: 652 return -ENOMEM; 653 } 654 655 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 656 struct qed_iscsi_conn **p_out_conn) 657 { 658 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 659 struct scsi_terminate_extra_params *p_q_cnts = NULL; 660 struct qed_iscsi_pf_params *p_params = NULL; 661 struct tcp_upload_params *p_tcp = NULL; 662 struct qed_iscsi_conn *p_conn = NULL; 663 int rc = 0; 664 665 /* Try finding a free connection that can be used */ 666 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 667 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 668 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 669 struct qed_iscsi_conn, list_entry); 670 if (p_conn) { 671 list_del(&p_conn->list_entry); 672 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 673 *p_out_conn = p_conn; 674 return 0; 675 } 676 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 677 678 /* Need to allocate a new connection */ 679 p_params = &p_hwfn->pf_params.iscsi_pf_params; 680 681 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 682 if (!p_conn) 683 return -ENOMEM; 684 685 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 686 sizeof(*p_q_cnts), 687 &p_conn->queue_cnts_phys_addr, 688 GFP_KERNEL); 689 if (!p_q_cnts) 690 goto nomem_queue_cnts_param; 691 p_conn->queue_cnts_virt_addr = p_q_cnts; 692 693 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 694 sizeof(*p_tcp), 695 &p_conn->tcp_upload_params_phys_addr, 696 GFP_KERNEL); 697 if (!p_tcp) 698 goto nomem_upload_param; 699 p_conn->tcp_upload_params_virt_addr = p_tcp; 700 701 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 702 QED_CHAIN_PAGE_SIZE / 0x80; 703 rc = qed_chain_alloc(p_hwfn->cdev, 704 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 705 QED_CHAIN_MODE_PBL, 706 QED_CHAIN_CNT_TYPE_U16, 707 r2tq_num_elements, 0x80, &p_conn->r2tq); 708 if (rc) 709 goto nomem_r2tq; 710 711 uhq_num_elements = p_params->num_uhq_pages_in_ring * 712 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 713 rc = qed_chain_alloc(p_hwfn->cdev, 714 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 715 QED_CHAIN_MODE_PBL, 716 QED_CHAIN_CNT_TYPE_U16, 717 uhq_num_elements, 718 sizeof(struct iscsi_uhqe), &p_conn->uhq); 719 if (rc) 720 goto nomem_uhq; 721 722 xhq_num_elements = uhq_num_elements; 723 rc = qed_chain_alloc(p_hwfn->cdev, 724 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 725 QED_CHAIN_MODE_PBL, 726 QED_CHAIN_CNT_TYPE_U16, 727 xhq_num_elements, 728 sizeof(struct iscsi_xhqe), &p_conn->xhq); 729 if (rc) 730 goto nomem; 731 732 p_conn->free_on_delete = true; 733 *p_out_conn = p_conn; 734 return 0; 735 736 nomem: 737 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 738 nomem_uhq: 739 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 740 nomem_r2tq: 741 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 742 sizeof(struct tcp_upload_params), 743 p_conn->tcp_upload_params_virt_addr, 744 p_conn->tcp_upload_params_phys_addr); 745 nomem_upload_param: 746 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 747 sizeof(struct scsi_terminate_extra_params), 748 p_conn->queue_cnts_virt_addr, 749 p_conn->queue_cnts_phys_addr); 750 nomem_queue_cnts_param: 751 kfree(p_conn); 752 753 return -ENOMEM; 754 } 755 756 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 757 struct qed_iscsi_conn *p_in_conn, 758 struct qed_iscsi_conn **p_out_conn) 759 { 760 struct qed_iscsi_conn *p_conn = NULL; 761 int rc = 0; 762 u32 icid; 763 764 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 765 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 766 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 767 if (rc) 768 return rc; 769 770 /* Use input connection or allocate a new one */ 771 if (p_in_conn) 772 p_conn = p_in_conn; 773 else 774 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 775 776 if (!rc) 777 rc = qed_iscsi_setup_connection(p_hwfn, p_conn); 778 779 if (rc) { 780 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 781 qed_cxt_release_cid(p_hwfn, icid); 782 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 783 return rc; 784 } 785 786 p_conn->icid = icid; 787 p_conn->conn_id = (u16)icid; 788 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 789 790 *p_out_conn = p_conn; 791 792 return rc; 793 } 794 795 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 796 struct qed_iscsi_conn *p_conn) 797 { 798 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 799 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 800 qed_cxt_release_cid(p_hwfn, p_conn->icid); 801 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 802 } 803 804 void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 805 struct qed_iscsi_conn *p_conn) 806 { 807 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 808 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 809 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 810 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 811 sizeof(struct tcp_upload_params), 812 p_conn->tcp_upload_params_virt_addr, 813 p_conn->tcp_upload_params_phys_addr); 814 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 815 sizeof(struct scsi_terminate_extra_params), 816 p_conn->queue_cnts_virt_addr, 817 p_conn->queue_cnts_phys_addr); 818 kfree(p_conn); 819 } 820 821 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 822 { 823 struct qed_iscsi_info *p_iscsi_info; 824 825 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 826 if (!p_iscsi_info) 827 return -ENOMEM; 828 829 INIT_LIST_HEAD(&p_iscsi_info->free_list); 830 831 p_hwfn->p_iscsi_info = p_iscsi_info; 832 return 0; 833 } 834 835 void qed_iscsi_setup(struct qed_hwfn *p_hwfn) 836 { 837 spin_lock_init(&p_hwfn->p_iscsi_info->lock); 838 } 839 840 void qed_iscsi_free(struct qed_hwfn *p_hwfn) 841 { 842 struct qed_iscsi_conn *p_conn = NULL; 843 844 if (!p_hwfn->p_iscsi_info) 845 return; 846 847 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 848 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 849 struct qed_iscsi_conn, list_entry); 850 if (p_conn) { 851 list_del(&p_conn->list_entry); 852 qed_iscsi_free_connection(p_hwfn, p_conn); 853 } 854 } 855 856 kfree(p_hwfn->p_iscsi_info); 857 p_hwfn->p_iscsi_info = NULL; 858 } 859 860 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 861 struct qed_ptt *p_ptt, 862 struct qed_iscsi_stats *p_stats) 863 { 864 struct tstorm_iscsi_stats_drv tstats; 865 u32 tstats_addr; 866 867 memset(&tstats, 0, sizeof(tstats)); 868 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 869 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 870 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 871 872 p_stats->iscsi_rx_bytes_cnt = 873 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 874 p_stats->iscsi_rx_packet_cnt = 875 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 876 p_stats->iscsi_rx_new_ooo_isle_events_cnt = 877 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt); 878 p_stats->iscsi_cmdq_threshold_cnt = 879 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 880 p_stats->iscsi_rq_threshold_cnt = 881 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 882 p_stats->iscsi_immq_threshold_cnt = 883 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 884 } 885 886 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 887 struct qed_ptt *p_ptt, 888 struct qed_iscsi_stats *p_stats) 889 { 890 struct mstorm_iscsi_stats_drv mstats; 891 u32 mstats_addr; 892 893 memset(&mstats, 0, sizeof(mstats)); 894 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 895 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 896 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 897 898 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 899 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 900 } 901 902 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 903 struct qed_ptt *p_ptt, 904 struct qed_iscsi_stats *p_stats) 905 { 906 struct ustorm_iscsi_stats_drv ustats; 907 u32 ustats_addr; 908 909 memset(&ustats, 0, sizeof(ustats)); 910 ustats_addr = BAR0_MAP_REG_USDM_RAM + 911 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 912 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 913 914 p_stats->iscsi_rx_data_pdu_cnt = 915 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 916 p_stats->iscsi_rx_r2t_pdu_cnt = 917 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 918 p_stats->iscsi_rx_total_pdu_cnt = 919 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 920 } 921 922 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 923 struct qed_ptt *p_ptt, 924 struct qed_iscsi_stats *p_stats) 925 { 926 struct xstorm_iscsi_stats_drv xstats; 927 u32 xstats_addr; 928 929 memset(&xstats, 0, sizeof(xstats)); 930 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 931 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 932 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 933 934 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 935 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 936 p_stats->iscsi_tx_fast_retransmit_event_cnt = 937 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 938 } 939 940 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 941 struct qed_ptt *p_ptt, 942 struct qed_iscsi_stats *p_stats) 943 { 944 struct ystorm_iscsi_stats_drv ystats; 945 u32 ystats_addr; 946 947 memset(&ystats, 0, sizeof(ystats)); 948 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 949 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 950 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 951 952 p_stats->iscsi_tx_data_pdu_cnt = 953 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 954 p_stats->iscsi_tx_r2t_pdu_cnt = 955 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 956 p_stats->iscsi_tx_total_pdu_cnt = 957 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 958 } 959 960 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 961 struct qed_ptt *p_ptt, 962 struct qed_iscsi_stats *p_stats) 963 { 964 struct pstorm_iscsi_stats_drv pstats; 965 u32 pstats_addr; 966 967 memset(&pstats, 0, sizeof(pstats)); 968 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 969 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 970 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 971 972 p_stats->iscsi_tx_bytes_cnt = 973 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 974 p_stats->iscsi_tx_packet_cnt = 975 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 976 } 977 978 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 979 struct qed_iscsi_stats *stats) 980 { 981 struct qed_ptt *p_ptt; 982 983 memset(stats, 0, sizeof(*stats)); 984 985 p_ptt = qed_ptt_acquire(p_hwfn); 986 if (!p_ptt) { 987 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 988 return -EAGAIN; 989 } 990 991 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 992 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 993 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 994 995 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 996 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 997 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 998 999 qed_ptt_release(p_hwfn, p_ptt); 1000 1001 return 0; 1002 } 1003 1004 struct qed_hash_iscsi_con { 1005 struct hlist_node node; 1006 struct qed_iscsi_conn *con; 1007 }; 1008 1009 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 1010 struct qed_dev_iscsi_info *info) 1011 { 1012 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 1013 1014 int rc; 1015 1016 memset(info, 0, sizeof(*info)); 1017 rc = qed_fill_dev_info(cdev, &info->common); 1018 1019 info->primary_dbq_rq_addr = 1020 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 1021 info->secondary_bdq_rq_addr = 1022 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 1023 1024 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ); 1025 1026 return rc; 1027 } 1028 1029 static void qed_register_iscsi_ops(struct qed_dev *cdev, 1030 struct qed_iscsi_cb_ops *ops, void *cookie) 1031 { 1032 cdev->protocol_ops.iscsi = ops; 1033 cdev->ops_cookie = cookie; 1034 } 1035 1036 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 1037 u32 handle) 1038 { 1039 struct qed_hash_iscsi_con *hash_con = NULL; 1040 1041 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 1042 return NULL; 1043 1044 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 1045 if (hash_con->con->icid == handle) 1046 break; 1047 } 1048 1049 if (!hash_con || (hash_con->con->icid != handle)) 1050 return NULL; 1051 1052 return hash_con; 1053 } 1054 1055 static int qed_iscsi_stop(struct qed_dev *cdev) 1056 { 1057 int rc; 1058 1059 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1060 DP_NOTICE(cdev, "iscsi already stopped\n"); 1061 return 0; 1062 } 1063 1064 if (!hash_empty(cdev->connections)) { 1065 DP_NOTICE(cdev, 1066 "Can't stop iscsi - not all connections were returned\n"); 1067 return -EINVAL; 1068 } 1069 1070 /* Stop the iscsi */ 1071 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev), 1072 QED_SPQ_MODE_EBLOCK, NULL); 1073 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1074 1075 return rc; 1076 } 1077 1078 static int qed_iscsi_start(struct qed_dev *cdev, 1079 struct qed_iscsi_tid *tasks, 1080 void *event_context, 1081 iscsi_event_cb_t async_event_cb) 1082 { 1083 int rc; 1084 struct qed_tid_mem *tid_info; 1085 1086 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1087 DP_NOTICE(cdev, "iscsi already started;\n"); 1088 return 0; 1089 } 1090 1091 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev), 1092 QED_SPQ_MODE_EBLOCK, NULL, event_context, 1093 async_event_cb); 1094 if (rc) { 1095 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1096 return rc; 1097 } 1098 1099 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1100 hash_init(cdev->connections); 1101 1102 if (!tasks) 1103 return 0; 1104 1105 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1106 1107 if (!tid_info) { 1108 qed_iscsi_stop(cdev); 1109 return -ENOMEM; 1110 } 1111 1112 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev), 1113 tid_info); 1114 if (rc) { 1115 DP_NOTICE(cdev, "Failed to gather task information\n"); 1116 qed_iscsi_stop(cdev); 1117 kfree(tid_info); 1118 return rc; 1119 } 1120 1121 /* Fill task information */ 1122 tasks->size = tid_info->tid_size; 1123 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1124 memcpy(tasks->blocks, tid_info->blocks, 1125 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1126 1127 kfree(tid_info); 1128 1129 return 0; 1130 } 1131 1132 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1133 u32 *handle, 1134 u32 *fw_cid, void __iomem **p_doorbell) 1135 { 1136 struct qed_hash_iscsi_con *hash_con; 1137 int rc; 1138 1139 /* Allocate a hashed connection */ 1140 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1141 if (!hash_con) 1142 return -ENOMEM; 1143 1144 /* Acquire the connection */ 1145 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL, 1146 &hash_con->con); 1147 if (rc) { 1148 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1149 kfree(hash_con); 1150 return rc; 1151 } 1152 1153 /* Added the connection to hash table */ 1154 *handle = hash_con->con->icid; 1155 *fw_cid = hash_con->con->fw_cid; 1156 hash_add(cdev->connections, &hash_con->node, *handle); 1157 1158 if (p_doorbell) 1159 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev), 1160 *handle); 1161 1162 return 0; 1163 } 1164 1165 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1166 { 1167 struct qed_hash_iscsi_con *hash_con; 1168 1169 hash_con = qed_iscsi_get_hash(cdev, handle); 1170 if (!hash_con) { 1171 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1172 handle); 1173 return -EINVAL; 1174 } 1175 1176 hlist_del(&hash_con->node); 1177 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con); 1178 kfree(hash_con); 1179 1180 return 0; 1181 } 1182 1183 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1184 u32 handle, 1185 struct qed_iscsi_params_offload *conn_info) 1186 { 1187 struct qed_hash_iscsi_con *hash_con; 1188 struct qed_iscsi_conn *con; 1189 1190 hash_con = qed_iscsi_get_hash(cdev, handle); 1191 if (!hash_con) { 1192 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1193 handle); 1194 return -EINVAL; 1195 } 1196 1197 /* Update the connection with information from the params */ 1198 con = hash_con->con; 1199 1200 ether_addr_copy(con->local_mac, conn_info->src.mac); 1201 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1202 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1203 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1204 con->local_port = conn_info->src.port; 1205 con->remote_port = conn_info->dst.port; 1206 1207 con->layer_code = conn_info->layer_code; 1208 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1209 con->initial_ack = conn_info->initial_ack; 1210 con->vlan_id = conn_info->vlan_id; 1211 con->tcp_flags = conn_info->tcp_flags; 1212 con->ip_version = conn_info->ip_version; 1213 con->default_cq = conn_info->default_cq; 1214 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1215 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1216 con->rcv_next = conn_info->rcv_next; 1217 con->snd_una = conn_info->snd_una; 1218 con->snd_next = conn_info->snd_next; 1219 con->snd_max = conn_info->snd_max; 1220 con->snd_wnd = conn_info->snd_wnd; 1221 con->rcv_wnd = conn_info->rcv_wnd; 1222 con->snd_wl1 = conn_info->snd_wl1; 1223 con->cwnd = conn_info->cwnd; 1224 con->ss_thresh = conn_info->ss_thresh; 1225 con->srtt = conn_info->srtt; 1226 con->rtt_var = conn_info->rtt_var; 1227 con->ts_time = conn_info->ts_time; 1228 con->ts_recent = conn_info->ts_recent; 1229 con->ts_recent_age = conn_info->ts_recent_age; 1230 con->total_rt = conn_info->total_rt; 1231 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1232 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1233 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1234 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1235 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1236 con->rt_cnt = conn_info->rt_cnt; 1237 con->flow_label = conn_info->flow_label; 1238 con->ka_timeout = conn_info->ka_timeout; 1239 con->ka_interval = conn_info->ka_interval; 1240 con->max_rt_time = conn_info->max_rt_time; 1241 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1242 con->ttl = conn_info->ttl; 1243 con->tos_or_tc = conn_info->tos_or_tc; 1244 con->remote_port = conn_info->remote_port; 1245 con->local_port = conn_info->local_port; 1246 con->mss = conn_info->mss; 1247 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1248 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1249 con->ts_ticks_per_second = conn_info->ts_ticks_per_second; 1250 con->da_timeout_value = conn_info->da_timeout_value; 1251 con->ack_frequency = conn_info->ack_frequency; 1252 1253 /* Set default values on other connection fields */ 1254 con->offl_flags = 0x1; 1255 1256 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con, 1257 QED_SPQ_MODE_EBLOCK, NULL); 1258 } 1259 1260 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1261 u32 handle, 1262 struct qed_iscsi_params_update *conn_info) 1263 { 1264 struct qed_hash_iscsi_con *hash_con; 1265 struct qed_iscsi_conn *con; 1266 1267 hash_con = qed_iscsi_get_hash(cdev, handle); 1268 if (!hash_con) { 1269 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1270 handle); 1271 return -EINVAL; 1272 } 1273 1274 /* Update the connection with information from the params */ 1275 con = hash_con->con; 1276 con->update_flag = conn_info->update_flag; 1277 con->max_seq_size = conn_info->max_seq_size; 1278 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1279 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1280 con->first_seq_length = conn_info->first_seq_length; 1281 con->exp_stat_sn = conn_info->exp_stat_sn; 1282 1283 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con, 1284 QED_SPQ_MODE_EBLOCK, NULL); 1285 } 1286 1287 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1288 { 1289 struct qed_hash_iscsi_con *hash_con; 1290 1291 hash_con = qed_iscsi_get_hash(cdev, handle); 1292 if (!hash_con) { 1293 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1294 handle); 1295 return -EINVAL; 1296 } 1297 1298 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev), 1299 hash_con->con, 1300 QED_SPQ_MODE_EBLOCK, NULL); 1301 } 1302 1303 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1304 u32 handle, u8 abrt_conn) 1305 { 1306 struct qed_hash_iscsi_con *hash_con; 1307 1308 hash_con = qed_iscsi_get_hash(cdev, handle); 1309 if (!hash_con) { 1310 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1311 handle); 1312 return -EINVAL; 1313 } 1314 1315 hash_con->con->abortive_dsconnect = abrt_conn; 1316 1317 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev), 1318 hash_con->con, 1319 QED_SPQ_MODE_EBLOCK, NULL); 1320 } 1321 1322 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1323 { 1324 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats); 1325 } 1326 1327 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev, 1328 struct qed_mcp_iscsi_stats *stats) 1329 { 1330 struct qed_iscsi_stats proto_stats; 1331 1332 /* Retrieve FW statistics */ 1333 memset(&proto_stats, 0, sizeof(proto_stats)); 1334 if (qed_iscsi_stats(cdev, &proto_stats)) { 1335 DP_VERBOSE(cdev, QED_MSG_STORAGE, 1336 "Failed to collect ISCSI statistics\n"); 1337 return; 1338 } 1339 1340 /* Translate FW statistics into struct */ 1341 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt; 1342 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt; 1343 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt; 1344 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt; 1345 } 1346 1347 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1348 .common = &qed_common_ops_pass, 1349 .ll2 = &qed_ll2_ops_pass, 1350 .fill_dev_info = &qed_fill_iscsi_dev_info, 1351 .register_ops = &qed_register_iscsi_ops, 1352 .start = &qed_iscsi_start, 1353 .stop = &qed_iscsi_stop, 1354 .acquire_conn = &qed_iscsi_acquire_conn, 1355 .release_conn = &qed_iscsi_release_conn, 1356 .offload_conn = &qed_iscsi_offload_conn, 1357 .update_conn = &qed_iscsi_update_conn, 1358 .destroy_conn = &qed_iscsi_destroy_conn, 1359 .clear_sq = &qed_iscsi_clear_conn_sq, 1360 .get_stats = &qed_iscsi_stats, 1361 }; 1362 1363 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1364 { 1365 return &qed_iscsi_ops_pass; 1366 } 1367 EXPORT_SYMBOL(qed_get_iscsi_ops); 1368 1369 void qed_put_iscsi_ops(void) 1370 { 1371 } 1372 EXPORT_SYMBOL(qed_put_iscsi_ops); 1373