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/version.h> 48 #include <linux/workqueue.h> 49 #include <linux/errno.h> 50 #include <linux/list.h> 51 #include <linux/spinlock.h> 52 #include <linux/qed/qed_iscsi_if.h> 53 #include "qed.h" 54 #include "qed_cxt.h" 55 #include "qed_dev_api.h" 56 #include "qed_hsi.h" 57 #include "qed_hw.h" 58 #include "qed_int.h" 59 #include "qed_iscsi.h" 60 #include "qed_ll2.h" 61 #include "qed_mcp.h" 62 #include "qed_sp.h" 63 #include "qed_sriov.h" 64 #include "qed_reg_addr.h" 65 66 struct qed_iscsi_conn { 67 struct list_head list_entry; 68 bool free_on_delete; 69 70 u16 conn_id; 71 u32 icid; 72 u32 fw_cid; 73 74 u8 layer_code; 75 u8 offl_flags; 76 u8 connect_mode; 77 u32 initial_ack; 78 dma_addr_t sq_pbl_addr; 79 struct qed_chain r2tq; 80 struct qed_chain xhq; 81 struct qed_chain uhq; 82 83 struct tcp_upload_params *tcp_upload_params_virt_addr; 84 dma_addr_t tcp_upload_params_phys_addr; 85 struct scsi_terminate_extra_params *queue_cnts_virt_addr; 86 dma_addr_t queue_cnts_phys_addr; 87 dma_addr_t syn_phy_addr; 88 89 u16 syn_ip_payload_length; 90 u8 local_mac[6]; 91 u8 remote_mac[6]; 92 u16 vlan_id; 93 u8 tcp_flags; 94 u8 ip_version; 95 u32 remote_ip[4]; 96 u32 local_ip[4]; 97 u8 ka_max_probe_cnt; 98 u8 dup_ack_theshold; 99 u32 rcv_next; 100 u32 snd_una; 101 u32 snd_next; 102 u32 snd_max; 103 u32 snd_wnd; 104 u32 rcv_wnd; 105 u32 snd_wl1; 106 u32 cwnd; 107 u32 ss_thresh; 108 u16 srtt; 109 u16 rtt_var; 110 u32 ts_time; 111 u32 ts_recent; 112 u32 ts_recent_age; 113 u32 total_rt; 114 u32 ka_timeout_delta; 115 u32 rt_timeout_delta; 116 u8 dup_ack_cnt; 117 u8 snd_wnd_probe_cnt; 118 u8 ka_probe_cnt; 119 u8 rt_cnt; 120 u32 flow_label; 121 u32 ka_timeout; 122 u32 ka_interval; 123 u32 max_rt_time; 124 u32 initial_rcv_wnd; 125 u8 ttl; 126 u8 tos_or_tc; 127 u16 remote_port; 128 u16 local_port; 129 u16 mss; 130 u8 snd_wnd_scale; 131 u8 rcv_wnd_scale; 132 u32 ts_ticks_per_second; 133 u16 da_timeout_value; 134 u8 ack_frequency; 135 136 u8 update_flag; 137 u8 default_cq; 138 u32 max_seq_size; 139 u32 max_recv_pdu_length; 140 u32 max_send_pdu_length; 141 u32 first_seq_length; 142 u32 exp_stat_sn; 143 u32 stat_sn; 144 u16 physical_q0; 145 u16 physical_q1; 146 u8 abortive_dsconnect; 147 }; 148 149 static int 150 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 151 enum spq_mode comp_mode, 152 struct qed_spq_comp_cb *p_comp_addr, 153 void *event_context, iscsi_event_cb_t async_event_cb) 154 { 155 struct iscsi_init_ramrod_params *p_ramrod = NULL; 156 struct scsi_init_func_queues *p_queue = NULL; 157 struct qed_iscsi_pf_params *p_params = NULL; 158 struct iscsi_spe_func_init *p_init = NULL; 159 struct qed_spq_entry *p_ent = NULL; 160 struct qed_sp_init_data init_data; 161 int rc = 0; 162 u32 dval; 163 u16 val; 164 u8 i; 165 166 /* Get SPQ entry */ 167 memset(&init_data, 0, sizeof(init_data)); 168 init_data.cid = qed_spq_get_cid(p_hwfn); 169 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 170 init_data.comp_mode = comp_mode; 171 init_data.p_comp_data = p_comp_addr; 172 173 rc = qed_sp_init_request(p_hwfn, &p_ent, 174 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 175 PROTOCOLID_ISCSI, &init_data); 176 if (rc) 177 return rc; 178 179 p_ramrod = &p_ent->ramrod.iscsi_init; 180 p_init = &p_ramrod->iscsi_init_spe; 181 p_params = &p_hwfn->pf_params.iscsi_pf_params; 182 p_queue = &p_init->q_params; 183 184 /* Sanity */ 185 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) { 186 DP_ERR(p_hwfn, 187 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n", 188 p_params->num_queues, 189 p_hwfn->hw_info.resc_num[QED_ISCSI_CQ]); 190 return -EINVAL; 191 } 192 193 SET_FIELD(p_init->hdr.flags, 194 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); 195 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; 196 197 val = p_params->half_way_close_timeout; 198 p_init->half_way_close_timeout = cpu_to_le16(val); 199 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 200 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 201 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 202 p_init->ooo_enable = p_params->ooo_enable; 203 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + 204 p_params->ll2_ooo_queue_id; 205 p_init->func_params.log_page_size = p_params->log_page_size; 206 val = p_params->num_tasks; 207 p_init->func_params.num_tasks = cpu_to_le16(val); 208 p_init->debug_mode.flags = p_params->debug_mode; 209 210 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 211 p_params->glbl_q_params_addr); 212 213 val = p_params->cq_num_entries; 214 p_queue->cq_num_entries = cpu_to_le16(val); 215 val = p_params->cmdq_num_entries; 216 p_queue->cmdq_num_entries = cpu_to_le16(val); 217 p_queue->num_queues = p_params->num_queues; 218 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 219 p_queue->queue_relative_offset = (u8)dval; 220 p_queue->cq_sb_pi = p_params->gl_rq_pi; 221 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 222 223 for (i = 0; i < p_params->num_queues; i++) { 224 val = p_hwfn->sbs_info[i]->igu_sb_id; 225 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 226 } 227 228 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 229 230 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 231 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 232 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 233 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 234 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 235 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 236 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 237 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 238 239 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 240 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 241 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 242 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 243 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 244 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 245 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 246 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 247 val = p_params->rq_buffer_size; 248 p_queue->rq_buffer_size = cpu_to_le16(val); 249 if (p_params->is_target) { 250 SET_FIELD(p_queue->q_validity, 251 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 252 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 253 SET_FIELD(p_queue->q_validity, 254 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 255 SET_FIELD(p_queue->q_validity, 256 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 257 } else { 258 SET_FIELD(p_queue->q_validity, 259 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 260 } 261 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 262 val = p_params->tx_sws_timer; 263 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 264 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt; 265 266 p_hwfn->p_iscsi_info->event_context = event_context; 267 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 268 269 return qed_spq_post(p_hwfn, p_ent, NULL); 270 } 271 272 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 273 struct qed_iscsi_conn *p_conn, 274 enum spq_mode comp_mode, 275 struct qed_spq_comp_cb *p_comp_addr) 276 { 277 struct iscsi_spe_conn_offload *p_ramrod = NULL; 278 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 279 struct tcp_offload_params *p_tcp = NULL; 280 struct qed_spq_entry *p_ent = NULL; 281 struct qed_sp_init_data init_data; 282 dma_addr_t r2tq_pbl_addr; 283 dma_addr_t xhq_pbl_addr; 284 dma_addr_t uhq_pbl_addr; 285 u16 physical_q; 286 int rc = 0; 287 u32 dval; 288 u16 wval; 289 u8 i; 290 u16 *p; 291 292 /* Get SPQ entry */ 293 memset(&init_data, 0, sizeof(init_data)); 294 init_data.cid = p_conn->icid; 295 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 296 init_data.comp_mode = comp_mode; 297 init_data.p_comp_data = p_comp_addr; 298 299 rc = qed_sp_init_request(p_hwfn, &p_ent, 300 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 301 PROTOCOLID_ISCSI, &init_data); 302 if (rc) 303 return rc; 304 305 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 306 307 /* Transmission PQ is the first of the PF */ 308 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 309 p_conn->physical_q0 = cpu_to_le16(physical_q); 310 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 311 312 /* iSCSI Pure-ACK PQ */ 313 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 314 p_conn->physical_q1 = cpu_to_le16(physical_q); 315 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 316 317 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; 318 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, 319 p_conn->layer_code); 320 321 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 322 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 323 324 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 325 326 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 327 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 328 329 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 330 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 331 332 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 333 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 334 335 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 336 p_ramrod->iscsi.flags = p_conn->offl_flags; 337 p_ramrod->iscsi.default_cq = p_conn->default_cq; 338 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 339 340 if (!GET_FIELD(p_ramrod->iscsi.flags, 341 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 342 p_tcp = &p_ramrod->tcp; 343 344 p = (u16 *)p_conn->local_mac; 345 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 346 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 347 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 348 349 p = (u16 *)p_conn->remote_mac; 350 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 351 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 352 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 353 354 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 355 356 p_tcp->flags = p_conn->tcp_flags; 357 p_tcp->ip_version = p_conn->ip_version; 358 for (i = 0; i < 4; i++) { 359 dval = p_conn->remote_ip[i]; 360 p_tcp->remote_ip[i] = cpu_to_le32(dval); 361 dval = p_conn->local_ip[i]; 362 p_tcp->local_ip[i] = cpu_to_le32(dval); 363 } 364 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 365 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 366 367 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 368 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 369 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 370 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 371 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 372 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 373 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 374 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 375 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 376 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 377 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 378 p_tcp->ts_time = cpu_to_le32(p_conn->ts_time); 379 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 380 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 381 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 382 dval = p_conn->ka_timeout_delta; 383 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 384 dval = p_conn->rt_timeout_delta; 385 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 386 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 387 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 388 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 389 p_tcp->rt_cnt = p_conn->rt_cnt; 390 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 391 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 392 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 393 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 394 dval = p_conn->initial_rcv_wnd; 395 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 396 p_tcp->ttl = p_conn->ttl; 397 p_tcp->tos_or_tc = p_conn->tos_or_tc; 398 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 399 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 400 p_tcp->mss = cpu_to_le16(p_conn->mss); 401 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 402 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 403 dval = p_conn->ts_ticks_per_second; 404 p_tcp->ts_ticks_per_second = cpu_to_le32(dval); 405 wval = p_conn->da_timeout_value; 406 p_tcp->da_timeout_value = cpu_to_le16(wval); 407 p_tcp->ack_frequency = p_conn->ack_frequency; 408 p_tcp->connect_mode = p_conn->connect_mode; 409 } else { 410 p_tcp2 = 411 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 412 413 p = (u16 *)p_conn->local_mac; 414 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 415 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 416 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 417 418 p = (u16 *)p_conn->remote_mac; 419 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 420 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 421 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 422 423 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 424 p_tcp2->flags = p_conn->tcp_flags; 425 426 p_tcp2->ip_version = p_conn->ip_version; 427 for (i = 0; i < 4; i++) { 428 dval = p_conn->remote_ip[i]; 429 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 430 dval = p_conn->local_ip[i]; 431 p_tcp2->local_ip[i] = cpu_to_le32(dval); 432 } 433 434 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 435 p_tcp2->ttl = p_conn->ttl; 436 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 437 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 438 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 439 p_tcp2->mss = cpu_to_le16(p_conn->mss); 440 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 441 p_tcp2->connect_mode = p_conn->connect_mode; 442 wval = p_conn->syn_ip_payload_length; 443 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 444 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 445 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 446 } 447 448 return qed_spq_post(p_hwfn, p_ent, NULL); 449 } 450 451 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 452 struct qed_iscsi_conn *p_conn, 453 enum spq_mode comp_mode, 454 struct qed_spq_comp_cb *p_comp_addr) 455 { 456 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 457 struct qed_spq_entry *p_ent = NULL; 458 struct qed_sp_init_data init_data; 459 int rc = -EINVAL; 460 u32 dval; 461 462 /* Get SPQ entry */ 463 memset(&init_data, 0, sizeof(init_data)); 464 init_data.cid = p_conn->icid; 465 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 466 init_data.comp_mode = comp_mode; 467 init_data.p_comp_data = p_comp_addr; 468 469 rc = qed_sp_init_request(p_hwfn, &p_ent, 470 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 471 PROTOCOLID_ISCSI, &init_data); 472 if (rc) 473 return rc; 474 475 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 476 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; 477 SET_FIELD(p_ramrod->hdr.flags, 478 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 479 480 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 481 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 482 p_ramrod->flags = p_conn->update_flag; 483 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 484 dval = p_conn->max_recv_pdu_length; 485 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 486 dval = p_conn->max_send_pdu_length; 487 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 488 dval = p_conn->first_seq_length; 489 p_ramrod->first_seq_length = cpu_to_le32(dval); 490 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 491 492 return qed_spq_post(p_hwfn, p_ent, NULL); 493 } 494 495 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 496 struct qed_iscsi_conn *p_conn, 497 enum spq_mode comp_mode, 498 struct qed_spq_comp_cb *p_comp_addr) 499 { 500 struct iscsi_spe_conn_termination *p_ramrod = NULL; 501 struct qed_spq_entry *p_ent = NULL; 502 struct qed_sp_init_data init_data; 503 int rc = -EINVAL; 504 505 /* Get SPQ entry */ 506 memset(&init_data, 0, sizeof(init_data)); 507 init_data.cid = p_conn->icid; 508 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 509 init_data.comp_mode = comp_mode; 510 init_data.p_comp_data = p_comp_addr; 511 512 rc = qed_sp_init_request(p_hwfn, &p_ent, 513 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 514 PROTOCOLID_ISCSI, &init_data); 515 if (rc) 516 return rc; 517 518 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 519 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; 520 SET_FIELD(p_ramrod->hdr.flags, 521 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 522 523 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 524 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 525 p_ramrod->abortive = p_conn->abortive_dsconnect; 526 527 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 528 p_conn->tcp_upload_params_phys_addr); 529 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 530 531 return qed_spq_post(p_hwfn, p_ent, NULL); 532 } 533 534 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 535 struct qed_iscsi_conn *p_conn, 536 enum spq_mode comp_mode, 537 struct qed_spq_comp_cb *p_comp_addr) 538 { 539 struct iscsi_slow_path_hdr *p_ramrod = NULL; 540 struct qed_spq_entry *p_ent = NULL; 541 struct qed_sp_init_data init_data; 542 int rc = -EINVAL; 543 544 /* Get SPQ entry */ 545 memset(&init_data, 0, sizeof(init_data)); 546 init_data.cid = p_conn->icid; 547 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 548 init_data.comp_mode = comp_mode; 549 init_data.p_comp_data = p_comp_addr; 550 551 rc = qed_sp_init_request(p_hwfn, &p_ent, 552 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 553 PROTOCOLID_ISCSI, &init_data); 554 if (rc) 555 return rc; 556 557 p_ramrod = &p_ent->ramrod.iscsi_empty; 558 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; 559 SET_FIELD(p_ramrod->flags, 560 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 561 562 return qed_spq_post(p_hwfn, p_ent, NULL); 563 } 564 565 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 566 enum spq_mode comp_mode, 567 struct qed_spq_comp_cb *p_comp_addr) 568 { 569 struct iscsi_spe_func_dstry *p_ramrod = NULL; 570 struct qed_spq_entry *p_ent = NULL; 571 struct qed_sp_init_data init_data; 572 int rc = 0; 573 574 /* Get SPQ entry */ 575 memset(&init_data, 0, sizeof(init_data)); 576 init_data.cid = qed_spq_get_cid(p_hwfn); 577 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 578 init_data.comp_mode = comp_mode; 579 init_data.p_comp_data = p_comp_addr; 580 581 rc = qed_sp_init_request(p_hwfn, &p_ent, 582 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 583 PROTOCOLID_ISCSI, &init_data); 584 if (rc) 585 return rc; 586 587 p_ramrod = &p_ent->ramrod.iscsi_destroy; 588 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; 589 590 return qed_spq_post(p_hwfn, p_ent, NULL); 591 } 592 593 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 594 { 595 return (u8 __iomem *)p_hwfn->doorbells + 596 qed_db_addr(cid, DQ_DEMS_LEGACY); 597 } 598 599 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 600 u8 bdq_id) 601 { 602 if (RESC_NUM(p_hwfn, QED_BDQ)) { 603 return (u8 __iomem *)p_hwfn->regview + 604 GTT_BAR0_MAP_REG_MSDM_RAM + 605 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 606 QED_BDQ), 607 bdq_id); 608 } else { 609 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 610 return NULL; 611 } 612 } 613 614 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 615 u8 bdq_id) 616 { 617 if (RESC_NUM(p_hwfn, QED_BDQ)) { 618 return (u8 __iomem *)p_hwfn->regview + 619 GTT_BAR0_MAP_REG_TSDM_RAM + 620 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 621 QED_BDQ), 622 bdq_id); 623 } else { 624 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 625 return NULL; 626 } 627 } 628 629 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn, 630 struct qed_iscsi_conn *p_conn) 631 { 632 if (!p_conn->queue_cnts_virt_addr) 633 goto nomem; 634 memset(p_conn->queue_cnts_virt_addr, 0, 635 sizeof(*p_conn->queue_cnts_virt_addr)); 636 637 if (!p_conn->tcp_upload_params_virt_addr) 638 goto nomem; 639 memset(p_conn->tcp_upload_params_virt_addr, 0, 640 sizeof(*p_conn->tcp_upload_params_virt_addr)); 641 642 if (!p_conn->r2tq.p_virt_addr) 643 goto nomem; 644 qed_chain_pbl_zero_mem(&p_conn->r2tq); 645 646 if (!p_conn->uhq.p_virt_addr) 647 goto nomem; 648 qed_chain_pbl_zero_mem(&p_conn->uhq); 649 650 if (!p_conn->xhq.p_virt_addr) 651 goto nomem; 652 qed_chain_pbl_zero_mem(&p_conn->xhq); 653 654 return 0; 655 nomem: 656 return -ENOMEM; 657 } 658 659 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 660 struct qed_iscsi_conn **p_out_conn) 661 { 662 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 663 struct scsi_terminate_extra_params *p_q_cnts = NULL; 664 struct qed_iscsi_pf_params *p_params = NULL; 665 struct tcp_upload_params *p_tcp = NULL; 666 struct qed_iscsi_conn *p_conn = NULL; 667 int rc = 0; 668 669 /* Try finding a free connection that can be used */ 670 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 671 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 672 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 673 struct qed_iscsi_conn, list_entry); 674 if (p_conn) { 675 list_del(&p_conn->list_entry); 676 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 677 *p_out_conn = p_conn; 678 return 0; 679 } 680 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 681 682 /* Need to allocate a new connection */ 683 p_params = &p_hwfn->pf_params.iscsi_pf_params; 684 685 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 686 if (!p_conn) 687 return -ENOMEM; 688 689 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 690 sizeof(*p_q_cnts), 691 &p_conn->queue_cnts_phys_addr, 692 GFP_KERNEL); 693 if (!p_q_cnts) 694 goto nomem_queue_cnts_param; 695 p_conn->queue_cnts_virt_addr = p_q_cnts; 696 697 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 698 sizeof(*p_tcp), 699 &p_conn->tcp_upload_params_phys_addr, 700 GFP_KERNEL); 701 if (!p_tcp) 702 goto nomem_upload_param; 703 p_conn->tcp_upload_params_virt_addr = p_tcp; 704 705 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 706 QED_CHAIN_PAGE_SIZE / 0x80; 707 rc = qed_chain_alloc(p_hwfn->cdev, 708 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 709 QED_CHAIN_MODE_PBL, 710 QED_CHAIN_CNT_TYPE_U16, 711 r2tq_num_elements, 0x80, &p_conn->r2tq); 712 if (rc) 713 goto nomem_r2tq; 714 715 uhq_num_elements = p_params->num_uhq_pages_in_ring * 716 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 717 rc = qed_chain_alloc(p_hwfn->cdev, 718 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 719 QED_CHAIN_MODE_PBL, 720 QED_CHAIN_CNT_TYPE_U16, 721 uhq_num_elements, 722 sizeof(struct iscsi_uhqe), &p_conn->uhq); 723 if (rc) 724 goto nomem_uhq; 725 726 xhq_num_elements = uhq_num_elements; 727 rc = qed_chain_alloc(p_hwfn->cdev, 728 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 729 QED_CHAIN_MODE_PBL, 730 QED_CHAIN_CNT_TYPE_U16, 731 xhq_num_elements, 732 sizeof(struct iscsi_xhqe), &p_conn->xhq); 733 if (rc) 734 goto nomem; 735 736 p_conn->free_on_delete = true; 737 *p_out_conn = p_conn; 738 return 0; 739 740 nomem: 741 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 742 nomem_uhq: 743 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 744 nomem_r2tq: 745 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 746 sizeof(struct tcp_upload_params), 747 p_conn->tcp_upload_params_virt_addr, 748 p_conn->tcp_upload_params_phys_addr); 749 nomem_upload_param: 750 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 751 sizeof(struct scsi_terminate_extra_params), 752 p_conn->queue_cnts_virt_addr, 753 p_conn->queue_cnts_phys_addr); 754 nomem_queue_cnts_param: 755 kfree(p_conn); 756 757 return -ENOMEM; 758 } 759 760 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 761 struct qed_iscsi_conn *p_in_conn, 762 struct qed_iscsi_conn **p_out_conn) 763 { 764 struct qed_iscsi_conn *p_conn = NULL; 765 int rc = 0; 766 u32 icid; 767 768 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 769 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 770 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 771 if (rc) 772 return rc; 773 774 /* Use input connection or allocate a new one */ 775 if (p_in_conn) 776 p_conn = p_in_conn; 777 else 778 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 779 780 if (!rc) 781 rc = qed_iscsi_setup_connection(p_hwfn, p_conn); 782 783 if (rc) { 784 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 785 qed_cxt_release_cid(p_hwfn, icid); 786 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 787 return rc; 788 } 789 790 p_conn->icid = icid; 791 p_conn->conn_id = (u16)icid; 792 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 793 794 *p_out_conn = p_conn; 795 796 return rc; 797 } 798 799 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 800 struct qed_iscsi_conn *p_conn) 801 { 802 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 803 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 804 qed_cxt_release_cid(p_hwfn, p_conn->icid); 805 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 806 } 807 808 void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 809 struct qed_iscsi_conn *p_conn) 810 { 811 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 812 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 813 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 814 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 815 sizeof(struct tcp_upload_params), 816 p_conn->tcp_upload_params_virt_addr, 817 p_conn->tcp_upload_params_phys_addr); 818 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 819 sizeof(struct scsi_terminate_extra_params), 820 p_conn->queue_cnts_virt_addr, 821 p_conn->queue_cnts_phys_addr); 822 kfree(p_conn); 823 } 824 825 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 826 { 827 struct qed_iscsi_info *p_iscsi_info; 828 829 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 830 if (!p_iscsi_info) 831 return NULL; 832 833 INIT_LIST_HEAD(&p_iscsi_info->free_list); 834 return p_iscsi_info; 835 } 836 837 void qed_iscsi_setup(struct qed_hwfn *p_hwfn, 838 struct qed_iscsi_info *p_iscsi_info) 839 { 840 spin_lock_init(&p_iscsi_info->lock); 841 } 842 843 void qed_iscsi_free(struct qed_hwfn *p_hwfn, 844 struct qed_iscsi_info *p_iscsi_info) 845 { 846 struct qed_iscsi_conn *p_conn = NULL; 847 848 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 849 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 850 struct qed_iscsi_conn, list_entry); 851 if (p_conn) { 852 list_del(&p_conn->list_entry); 853 qed_iscsi_free_connection(p_hwfn, p_conn); 854 } 855 } 856 857 kfree(p_iscsi_info); 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