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 u16 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_recent; 110 u32 ts_recent_age; 111 u32 total_rt; 112 u32 ka_timeout_delta; 113 u32 rt_timeout_delta; 114 u8 dup_ack_cnt; 115 u8 snd_wnd_probe_cnt; 116 u8 ka_probe_cnt; 117 u8 rt_cnt; 118 u32 flow_label; 119 u32 ka_timeout; 120 u32 ka_interval; 121 u32 max_rt_time; 122 u32 initial_rcv_wnd; 123 u8 ttl; 124 u8 tos_or_tc; 125 u16 remote_port; 126 u16 local_port; 127 u16 mss; 128 u8 snd_wnd_scale; 129 u8 rcv_wnd_scale; 130 u16 da_timeout_value; 131 u8 ack_frequency; 132 133 u8 update_flag; 134 u8 default_cq; 135 u32 max_seq_size; 136 u32 max_recv_pdu_length; 137 u32 max_send_pdu_length; 138 u32 first_seq_length; 139 u32 exp_stat_sn; 140 u32 stat_sn; 141 u16 physical_q0; 142 u16 physical_q1; 143 u8 abortive_dsconnect; 144 }; 145 146 static int 147 qed_iscsi_async_event(struct qed_hwfn *p_hwfn, 148 u8 fw_event_code, 149 u16 echo, union event_ring_data *data, u8 fw_return_code) 150 { 151 if (p_hwfn->p_iscsi_info->event_cb) { 152 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info; 153 154 return p_iscsi->event_cb(p_iscsi->event_context, 155 fw_event_code, data); 156 } else { 157 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n"); 158 return -EINVAL; 159 } 160 } 161 162 static int 163 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 164 enum spq_mode comp_mode, 165 struct qed_spq_comp_cb *p_comp_addr, 166 void *event_context, iscsi_event_cb_t async_event_cb) 167 { 168 struct iscsi_init_ramrod_params *p_ramrod = NULL; 169 struct scsi_init_func_queues *p_queue = NULL; 170 struct qed_iscsi_pf_params *p_params = NULL; 171 struct iscsi_spe_func_init *p_init = NULL; 172 struct qed_spq_entry *p_ent = NULL; 173 struct qed_sp_init_data init_data; 174 int rc = 0; 175 u32 dval; 176 u16 val; 177 u8 i; 178 179 /* Get SPQ entry */ 180 memset(&init_data, 0, sizeof(init_data)); 181 init_data.cid = qed_spq_get_cid(p_hwfn); 182 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 183 init_data.comp_mode = comp_mode; 184 init_data.p_comp_data = p_comp_addr; 185 186 rc = qed_sp_init_request(p_hwfn, &p_ent, 187 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 188 PROTOCOLID_ISCSI, &init_data); 189 if (rc) 190 return rc; 191 192 p_ramrod = &p_ent->ramrod.iscsi_init; 193 p_init = &p_ramrod->iscsi_init_spe; 194 p_params = &p_hwfn->pf_params.iscsi_pf_params; 195 p_queue = &p_init->q_params; 196 197 /* Sanity */ 198 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) { 199 DP_ERR(p_hwfn, 200 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n", 201 p_params->num_queues, 202 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]); 203 qed_sp_destroy_request(p_hwfn, p_ent); 204 return -EINVAL; 205 } 206 207 val = p_params->half_way_close_timeout; 208 p_init->half_way_close_timeout = cpu_to_le16(val); 209 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 210 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 211 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 212 p_init->ll2_rx_queue_id = 213 p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + 214 p_params->ll2_ooo_queue_id; 215 216 p_init->func_params.log_page_size = p_params->log_page_size; 217 val = p_params->num_tasks; 218 p_init->func_params.num_tasks = cpu_to_le16(val); 219 p_init->debug_mode.flags = p_params->debug_mode; 220 221 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 222 p_params->glbl_q_params_addr); 223 224 val = p_params->cq_num_entries; 225 p_queue->cq_num_entries = cpu_to_le16(val); 226 val = p_params->cmdq_num_entries; 227 p_queue->cmdq_num_entries = cpu_to_le16(val); 228 p_queue->num_queues = p_params->num_queues; 229 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 230 p_queue->queue_relative_offset = (u8)dval; 231 p_queue->cq_sb_pi = p_params->gl_rq_pi; 232 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 233 234 for (i = 0; i < p_params->num_queues; i++) { 235 val = qed_get_igu_sb_id(p_hwfn, i); 236 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 237 } 238 239 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 240 241 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 242 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 243 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 244 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 245 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 246 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 247 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 248 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 249 250 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 251 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 252 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 253 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 254 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 255 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 256 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 257 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 258 val = p_params->rq_buffer_size; 259 p_queue->rq_buffer_size = cpu_to_le16(val); 260 if (p_params->is_target) { 261 SET_FIELD(p_queue->q_validity, 262 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 263 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 264 SET_FIELD(p_queue->q_validity, 265 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 266 SET_FIELD(p_queue->q_validity, 267 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 268 } else { 269 SET_FIELD(p_queue->q_validity, 270 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 271 } 272 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 273 val = p_params->tx_sws_timer; 274 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 275 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt; 276 277 p_hwfn->p_iscsi_info->event_context = event_context; 278 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 279 280 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI, 281 qed_iscsi_async_event); 282 283 return qed_spq_post(p_hwfn, p_ent, NULL); 284 } 285 286 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 287 struct qed_iscsi_conn *p_conn, 288 enum spq_mode comp_mode, 289 struct qed_spq_comp_cb *p_comp_addr) 290 { 291 struct iscsi_spe_conn_offload *p_ramrod = NULL; 292 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 293 struct tcp_offload_params *p_tcp = NULL; 294 struct qed_spq_entry *p_ent = NULL; 295 struct qed_sp_init_data init_data; 296 dma_addr_t r2tq_pbl_addr; 297 dma_addr_t xhq_pbl_addr; 298 dma_addr_t uhq_pbl_addr; 299 u16 physical_q; 300 int rc = 0; 301 u32 dval; 302 u16 wval; 303 u16 *p; 304 u8 i; 305 306 /* Get SPQ entry */ 307 memset(&init_data, 0, sizeof(init_data)); 308 init_data.cid = p_conn->icid; 309 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 310 init_data.comp_mode = comp_mode; 311 init_data.p_comp_data = p_comp_addr; 312 313 rc = qed_sp_init_request(p_hwfn, &p_ent, 314 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 315 PROTOCOLID_ISCSI, &init_data); 316 if (rc) 317 return rc; 318 319 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 320 321 /* Transmission PQ is the first of the PF */ 322 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 323 p_conn->physical_q0 = cpu_to_le16(physical_q); 324 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 325 326 /* iSCSI Pure-ACK PQ */ 327 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 328 p_conn->physical_q1 = cpu_to_le16(physical_q); 329 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 330 331 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 332 333 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 334 335 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 336 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 337 338 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 339 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 340 341 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 342 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 343 344 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 345 p_ramrod->iscsi.flags = p_conn->offl_flags; 346 p_ramrod->iscsi.default_cq = p_conn->default_cq; 347 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 348 349 if (!GET_FIELD(p_ramrod->iscsi.flags, 350 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 351 p_tcp = &p_ramrod->tcp; 352 353 p = (u16 *)p_conn->local_mac; 354 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 355 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 356 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 357 358 p = (u16 *)p_conn->remote_mac; 359 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 360 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 361 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 362 363 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 364 365 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags); 366 p_tcp->ip_version = p_conn->ip_version; 367 for (i = 0; i < 4; i++) { 368 dval = p_conn->remote_ip[i]; 369 p_tcp->remote_ip[i] = cpu_to_le32(dval); 370 dval = p_conn->local_ip[i]; 371 p_tcp->local_ip[i] = cpu_to_le32(dval); 372 } 373 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 374 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 375 376 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 377 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 378 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 379 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 380 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 381 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 382 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 383 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 384 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 385 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 386 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 387 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 388 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 389 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 390 dval = p_conn->ka_timeout_delta; 391 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 392 dval = p_conn->rt_timeout_delta; 393 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 394 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 395 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 396 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 397 p_tcp->rt_cnt = p_conn->rt_cnt; 398 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 399 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 400 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 401 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 402 dval = p_conn->initial_rcv_wnd; 403 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 404 p_tcp->ttl = p_conn->ttl; 405 p_tcp->tos_or_tc = p_conn->tos_or_tc; 406 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 407 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 408 p_tcp->mss = cpu_to_le16(p_conn->mss); 409 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 410 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 411 wval = p_conn->da_timeout_value; 412 p_tcp->da_timeout_value = cpu_to_le16(wval); 413 p_tcp->ack_frequency = p_conn->ack_frequency; 414 p_tcp->connect_mode = p_conn->connect_mode; 415 } else { 416 p_tcp2 = 417 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 418 419 p = (u16 *)p_conn->local_mac; 420 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 421 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 422 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 423 424 p = (u16 *)p_conn->remote_mac; 425 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 426 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 427 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 428 429 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 430 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags); 431 432 p_tcp2->ip_version = p_conn->ip_version; 433 for (i = 0; i < 4; i++) { 434 dval = p_conn->remote_ip[i]; 435 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 436 dval = p_conn->local_ip[i]; 437 p_tcp2->local_ip[i] = cpu_to_le32(dval); 438 } 439 440 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 441 p_tcp2->ttl = p_conn->ttl; 442 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 443 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 444 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 445 p_tcp2->mss = cpu_to_le16(p_conn->mss); 446 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 447 p_tcp2->connect_mode = p_conn->connect_mode; 448 wval = p_conn->syn_ip_payload_length; 449 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 450 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 451 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 452 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd); 453 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt; 454 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 455 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 456 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval); 457 } 458 459 return qed_spq_post(p_hwfn, p_ent, NULL); 460 } 461 462 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 463 struct qed_iscsi_conn *p_conn, 464 enum spq_mode comp_mode, 465 struct qed_spq_comp_cb *p_comp_addr) 466 { 467 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 468 struct qed_spq_entry *p_ent = NULL; 469 struct qed_sp_init_data init_data; 470 int rc = -EINVAL; 471 u32 dval; 472 473 /* Get SPQ entry */ 474 memset(&init_data, 0, sizeof(init_data)); 475 init_data.cid = p_conn->icid; 476 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 477 init_data.comp_mode = comp_mode; 478 init_data.p_comp_data = p_comp_addr; 479 480 rc = qed_sp_init_request(p_hwfn, &p_ent, 481 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 482 PROTOCOLID_ISCSI, &init_data); 483 if (rc) 484 return rc; 485 486 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 487 488 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 489 p_ramrod->flags = p_conn->update_flag; 490 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 491 dval = p_conn->max_recv_pdu_length; 492 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 493 dval = p_conn->max_send_pdu_length; 494 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 495 dval = p_conn->first_seq_length; 496 p_ramrod->first_seq_length = cpu_to_le32(dval); 497 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 498 499 return qed_spq_post(p_hwfn, p_ent, NULL); 500 } 501 502 static int 503 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn, 504 struct qed_iscsi_conn *p_conn, 505 enum spq_mode comp_mode, 506 struct qed_spq_comp_cb *p_comp_addr) 507 { 508 struct iscsi_spe_conn_mac_update *p_ramrod = NULL; 509 struct qed_spq_entry *p_ent = NULL; 510 struct qed_sp_init_data init_data; 511 int rc = -EINVAL; 512 u8 ucval; 513 514 /* Get SPQ entry */ 515 memset(&init_data, 0, sizeof(init_data)); 516 init_data.cid = p_conn->icid; 517 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 518 init_data.comp_mode = comp_mode; 519 init_data.p_comp_data = p_comp_addr; 520 521 rc = qed_sp_init_request(p_hwfn, &p_ent, 522 ISCSI_RAMROD_CMD_ID_MAC_UPDATE, 523 PROTOCOLID_ISCSI, &init_data); 524 if (rc) 525 return rc; 526 527 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update; 528 529 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 530 ucval = p_conn->remote_mac[1]; 531 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval; 532 ucval = p_conn->remote_mac[0]; 533 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval; 534 ucval = p_conn->remote_mac[3]; 535 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval; 536 ucval = p_conn->remote_mac[2]; 537 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval; 538 ucval = p_conn->remote_mac[5]; 539 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval; 540 ucval = p_conn->remote_mac[4]; 541 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval; 542 543 return qed_spq_post(p_hwfn, p_ent, NULL); 544 } 545 546 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 547 struct qed_iscsi_conn *p_conn, 548 enum spq_mode comp_mode, 549 struct qed_spq_comp_cb *p_comp_addr) 550 { 551 struct iscsi_spe_conn_termination *p_ramrod = NULL; 552 struct qed_spq_entry *p_ent = NULL; 553 struct qed_sp_init_data init_data; 554 int rc = -EINVAL; 555 556 /* Get SPQ entry */ 557 memset(&init_data, 0, sizeof(init_data)); 558 init_data.cid = p_conn->icid; 559 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 560 init_data.comp_mode = comp_mode; 561 init_data.p_comp_data = p_comp_addr; 562 563 rc = qed_sp_init_request(p_hwfn, &p_ent, 564 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 565 PROTOCOLID_ISCSI, &init_data); 566 if (rc) 567 return rc; 568 569 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 570 571 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 572 p_ramrod->abortive = p_conn->abortive_dsconnect; 573 574 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 575 p_conn->tcp_upload_params_phys_addr); 576 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 577 578 return qed_spq_post(p_hwfn, p_ent, NULL); 579 } 580 581 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 582 struct qed_iscsi_conn *p_conn, 583 enum spq_mode comp_mode, 584 struct qed_spq_comp_cb *p_comp_addr) 585 { 586 struct qed_spq_entry *p_ent = NULL; 587 struct qed_sp_init_data init_data; 588 int rc = -EINVAL; 589 590 /* Get SPQ entry */ 591 memset(&init_data, 0, sizeof(init_data)); 592 init_data.cid = p_conn->icid; 593 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 594 init_data.comp_mode = comp_mode; 595 init_data.p_comp_data = p_comp_addr; 596 597 rc = qed_sp_init_request(p_hwfn, &p_ent, 598 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 599 PROTOCOLID_ISCSI, &init_data); 600 if (rc) 601 return rc; 602 603 return qed_spq_post(p_hwfn, p_ent, NULL); 604 } 605 606 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 607 enum spq_mode comp_mode, 608 struct qed_spq_comp_cb *p_comp_addr) 609 { 610 struct qed_spq_entry *p_ent = NULL; 611 struct qed_sp_init_data init_data; 612 int rc = 0; 613 614 /* Get SPQ entry */ 615 memset(&init_data, 0, sizeof(init_data)); 616 init_data.cid = qed_spq_get_cid(p_hwfn); 617 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 618 init_data.comp_mode = comp_mode; 619 init_data.p_comp_data = p_comp_addr; 620 621 rc = qed_sp_init_request(p_hwfn, &p_ent, 622 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 623 PROTOCOLID_ISCSI, &init_data); 624 if (rc) 625 return rc; 626 627 rc = qed_spq_post(p_hwfn, p_ent, NULL); 628 629 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI); 630 return rc; 631 } 632 633 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 634 { 635 return (u8 __iomem *)p_hwfn->doorbells + 636 qed_db_addr(cid, DQ_DEMS_LEGACY); 637 } 638 639 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 640 u8 bdq_id) 641 { 642 if (RESC_NUM(p_hwfn, QED_BDQ)) { 643 return (u8 __iomem *)p_hwfn->regview + 644 GTT_BAR0_MAP_REG_MSDM_RAM + 645 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 646 QED_BDQ), 647 bdq_id); 648 } else { 649 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 650 return NULL; 651 } 652 } 653 654 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 655 u8 bdq_id) 656 { 657 if (RESC_NUM(p_hwfn, QED_BDQ)) { 658 return (u8 __iomem *)p_hwfn->regview + 659 GTT_BAR0_MAP_REG_TSDM_RAM + 660 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 661 QED_BDQ), 662 bdq_id); 663 } else { 664 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 665 return NULL; 666 } 667 } 668 669 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn) 670 { 671 if (!p_conn->queue_cnts_virt_addr) 672 goto nomem; 673 memset(p_conn->queue_cnts_virt_addr, 0, 674 sizeof(*p_conn->queue_cnts_virt_addr)); 675 676 if (!p_conn->tcp_upload_params_virt_addr) 677 goto nomem; 678 memset(p_conn->tcp_upload_params_virt_addr, 0, 679 sizeof(*p_conn->tcp_upload_params_virt_addr)); 680 681 if (!p_conn->r2tq.p_virt_addr) 682 goto nomem; 683 qed_chain_pbl_zero_mem(&p_conn->r2tq); 684 685 if (!p_conn->uhq.p_virt_addr) 686 goto nomem; 687 qed_chain_pbl_zero_mem(&p_conn->uhq); 688 689 if (!p_conn->xhq.p_virt_addr) 690 goto nomem; 691 qed_chain_pbl_zero_mem(&p_conn->xhq); 692 693 return 0; 694 nomem: 695 return -ENOMEM; 696 } 697 698 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 699 struct qed_iscsi_conn **p_out_conn) 700 { 701 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 702 struct scsi_terminate_extra_params *p_q_cnts = NULL; 703 struct qed_iscsi_pf_params *p_params = NULL; 704 struct tcp_upload_params *p_tcp = NULL; 705 struct qed_iscsi_conn *p_conn = NULL; 706 int rc = 0; 707 708 /* Try finding a free connection that can be used */ 709 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 710 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 711 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 712 struct qed_iscsi_conn, list_entry); 713 if (p_conn) { 714 list_del(&p_conn->list_entry); 715 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 716 *p_out_conn = p_conn; 717 return 0; 718 } 719 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 720 721 /* Need to allocate a new connection */ 722 p_params = &p_hwfn->pf_params.iscsi_pf_params; 723 724 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 725 if (!p_conn) 726 return -ENOMEM; 727 728 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 729 sizeof(*p_q_cnts), 730 &p_conn->queue_cnts_phys_addr, 731 GFP_KERNEL); 732 if (!p_q_cnts) 733 goto nomem_queue_cnts_param; 734 p_conn->queue_cnts_virt_addr = p_q_cnts; 735 736 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 737 sizeof(*p_tcp), 738 &p_conn->tcp_upload_params_phys_addr, 739 GFP_KERNEL); 740 if (!p_tcp) 741 goto nomem_upload_param; 742 p_conn->tcp_upload_params_virt_addr = p_tcp; 743 744 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 745 QED_CHAIN_PAGE_SIZE / 0x80; 746 rc = qed_chain_alloc(p_hwfn->cdev, 747 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 748 QED_CHAIN_MODE_PBL, 749 QED_CHAIN_CNT_TYPE_U16, 750 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL); 751 if (rc) 752 goto nomem_r2tq; 753 754 uhq_num_elements = p_params->num_uhq_pages_in_ring * 755 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 756 rc = qed_chain_alloc(p_hwfn->cdev, 757 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 758 QED_CHAIN_MODE_PBL, 759 QED_CHAIN_CNT_TYPE_U16, 760 uhq_num_elements, 761 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL); 762 if (rc) 763 goto nomem_uhq; 764 765 xhq_num_elements = uhq_num_elements; 766 rc = qed_chain_alloc(p_hwfn->cdev, 767 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 768 QED_CHAIN_MODE_PBL, 769 QED_CHAIN_CNT_TYPE_U16, 770 xhq_num_elements, 771 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL); 772 if (rc) 773 goto nomem; 774 775 p_conn->free_on_delete = true; 776 *p_out_conn = p_conn; 777 return 0; 778 779 nomem: 780 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 781 nomem_uhq: 782 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 783 nomem_r2tq: 784 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 785 sizeof(struct tcp_upload_params), 786 p_conn->tcp_upload_params_virt_addr, 787 p_conn->tcp_upload_params_phys_addr); 788 nomem_upload_param: 789 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 790 sizeof(struct scsi_terminate_extra_params), 791 p_conn->queue_cnts_virt_addr, 792 p_conn->queue_cnts_phys_addr); 793 nomem_queue_cnts_param: 794 kfree(p_conn); 795 796 return -ENOMEM; 797 } 798 799 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 800 struct qed_iscsi_conn *p_in_conn, 801 struct qed_iscsi_conn **p_out_conn) 802 { 803 struct qed_iscsi_conn *p_conn = NULL; 804 int rc = 0; 805 u32 icid; 806 807 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 808 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 809 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 810 if (rc) 811 return rc; 812 813 /* Use input connection or allocate a new one */ 814 if (p_in_conn) 815 p_conn = p_in_conn; 816 else 817 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 818 819 if (!rc) 820 rc = qed_iscsi_setup_connection(p_conn); 821 822 if (rc) { 823 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 824 qed_cxt_release_cid(p_hwfn, icid); 825 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 826 return rc; 827 } 828 829 p_conn->icid = icid; 830 p_conn->conn_id = (u16)icid; 831 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 832 833 *p_out_conn = p_conn; 834 835 return rc; 836 } 837 838 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 839 struct qed_iscsi_conn *p_conn) 840 { 841 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 842 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 843 qed_cxt_release_cid(p_hwfn, p_conn->icid); 844 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 845 } 846 847 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 848 struct qed_iscsi_conn *p_conn) 849 { 850 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 851 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 852 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 853 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 854 sizeof(struct tcp_upload_params), 855 p_conn->tcp_upload_params_virt_addr, 856 p_conn->tcp_upload_params_phys_addr); 857 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 858 sizeof(struct scsi_terminate_extra_params), 859 p_conn->queue_cnts_virt_addr, 860 p_conn->queue_cnts_phys_addr); 861 kfree(p_conn); 862 } 863 864 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 865 { 866 struct qed_iscsi_info *p_iscsi_info; 867 868 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 869 if (!p_iscsi_info) 870 return -ENOMEM; 871 872 INIT_LIST_HEAD(&p_iscsi_info->free_list); 873 874 p_hwfn->p_iscsi_info = p_iscsi_info; 875 return 0; 876 } 877 878 void qed_iscsi_setup(struct qed_hwfn *p_hwfn) 879 { 880 spin_lock_init(&p_hwfn->p_iscsi_info->lock); 881 } 882 883 void qed_iscsi_free(struct qed_hwfn *p_hwfn) 884 { 885 struct qed_iscsi_conn *p_conn = NULL; 886 887 if (!p_hwfn->p_iscsi_info) 888 return; 889 890 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 891 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 892 struct qed_iscsi_conn, list_entry); 893 if (p_conn) { 894 list_del(&p_conn->list_entry); 895 qed_iscsi_free_connection(p_hwfn, p_conn); 896 } 897 } 898 899 kfree(p_hwfn->p_iscsi_info); 900 p_hwfn->p_iscsi_info = NULL; 901 } 902 903 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 904 struct qed_ptt *p_ptt, 905 struct qed_iscsi_stats *p_stats) 906 { 907 struct tstorm_iscsi_stats_drv tstats; 908 u32 tstats_addr; 909 910 memset(&tstats, 0, sizeof(tstats)); 911 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 912 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 913 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 914 915 p_stats->iscsi_rx_bytes_cnt = 916 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 917 p_stats->iscsi_rx_packet_cnt = 918 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 919 p_stats->iscsi_rx_new_ooo_isle_events_cnt = 920 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt); 921 p_stats->iscsi_cmdq_threshold_cnt = 922 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 923 p_stats->iscsi_rq_threshold_cnt = 924 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 925 p_stats->iscsi_immq_threshold_cnt = 926 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 927 } 928 929 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 930 struct qed_ptt *p_ptt, 931 struct qed_iscsi_stats *p_stats) 932 { 933 struct mstorm_iscsi_stats_drv mstats; 934 u32 mstats_addr; 935 936 memset(&mstats, 0, sizeof(mstats)); 937 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 938 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 939 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 940 941 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 942 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 943 } 944 945 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 946 struct qed_ptt *p_ptt, 947 struct qed_iscsi_stats *p_stats) 948 { 949 struct ustorm_iscsi_stats_drv ustats; 950 u32 ustats_addr; 951 952 memset(&ustats, 0, sizeof(ustats)); 953 ustats_addr = BAR0_MAP_REG_USDM_RAM + 954 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 955 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 956 957 p_stats->iscsi_rx_data_pdu_cnt = 958 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 959 p_stats->iscsi_rx_r2t_pdu_cnt = 960 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 961 p_stats->iscsi_rx_total_pdu_cnt = 962 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 963 } 964 965 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 966 struct qed_ptt *p_ptt, 967 struct qed_iscsi_stats *p_stats) 968 { 969 struct xstorm_iscsi_stats_drv xstats; 970 u32 xstats_addr; 971 972 memset(&xstats, 0, sizeof(xstats)); 973 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 974 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 975 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 976 977 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 978 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 979 p_stats->iscsi_tx_fast_retransmit_event_cnt = 980 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 981 } 982 983 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 984 struct qed_ptt *p_ptt, 985 struct qed_iscsi_stats *p_stats) 986 { 987 struct ystorm_iscsi_stats_drv ystats; 988 u32 ystats_addr; 989 990 memset(&ystats, 0, sizeof(ystats)); 991 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 992 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 993 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 994 995 p_stats->iscsi_tx_data_pdu_cnt = 996 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 997 p_stats->iscsi_tx_r2t_pdu_cnt = 998 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 999 p_stats->iscsi_tx_total_pdu_cnt = 1000 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 1001 } 1002 1003 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 1004 struct qed_ptt *p_ptt, 1005 struct qed_iscsi_stats *p_stats) 1006 { 1007 struct pstorm_iscsi_stats_drv pstats; 1008 u32 pstats_addr; 1009 1010 memset(&pstats, 0, sizeof(pstats)); 1011 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 1012 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1013 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 1014 1015 p_stats->iscsi_tx_bytes_cnt = 1016 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 1017 p_stats->iscsi_tx_packet_cnt = 1018 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 1019 } 1020 1021 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 1022 struct qed_iscsi_stats *stats) 1023 { 1024 struct qed_ptt *p_ptt; 1025 1026 memset(stats, 0, sizeof(*stats)); 1027 1028 p_ptt = qed_ptt_acquire(p_hwfn); 1029 if (!p_ptt) { 1030 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 1031 return -EAGAIN; 1032 } 1033 1034 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 1035 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 1036 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 1037 1038 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 1039 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 1040 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 1041 1042 qed_ptt_release(p_hwfn, p_ptt); 1043 1044 return 0; 1045 } 1046 1047 struct qed_hash_iscsi_con { 1048 struct hlist_node node; 1049 struct qed_iscsi_conn *con; 1050 }; 1051 1052 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 1053 struct qed_dev_iscsi_info *info) 1054 { 1055 struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev); 1056 1057 int rc; 1058 1059 memset(info, 0, sizeof(*info)); 1060 rc = qed_fill_dev_info(cdev, &info->common); 1061 1062 info->primary_dbq_rq_addr = 1063 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 1064 info->secondary_bdq_rq_addr = 1065 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 1066 1067 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ); 1068 1069 return rc; 1070 } 1071 1072 static void qed_register_iscsi_ops(struct qed_dev *cdev, 1073 struct qed_iscsi_cb_ops *ops, void *cookie) 1074 { 1075 cdev->protocol_ops.iscsi = ops; 1076 cdev->ops_cookie = cookie; 1077 } 1078 1079 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 1080 u32 handle) 1081 { 1082 struct qed_hash_iscsi_con *hash_con = NULL; 1083 1084 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 1085 return NULL; 1086 1087 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 1088 if (hash_con->con->icid == handle) 1089 break; 1090 } 1091 1092 if (!hash_con || (hash_con->con->icid != handle)) 1093 return NULL; 1094 1095 return hash_con; 1096 } 1097 1098 static int qed_iscsi_stop(struct qed_dev *cdev) 1099 { 1100 int rc; 1101 1102 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1103 DP_NOTICE(cdev, "iscsi already stopped\n"); 1104 return 0; 1105 } 1106 1107 if (!hash_empty(cdev->connections)) { 1108 DP_NOTICE(cdev, 1109 "Can't stop iscsi - not all connections were returned\n"); 1110 return -EINVAL; 1111 } 1112 1113 /* Stop the iscsi */ 1114 rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1115 NULL); 1116 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1117 1118 return rc; 1119 } 1120 1121 static int qed_iscsi_start(struct qed_dev *cdev, 1122 struct qed_iscsi_tid *tasks, 1123 void *event_context, 1124 iscsi_event_cb_t async_event_cb) 1125 { 1126 int rc; 1127 struct qed_tid_mem *tid_info; 1128 1129 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1130 DP_NOTICE(cdev, "iscsi already started;\n"); 1131 return 0; 1132 } 1133 1134 rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1135 NULL, event_context, async_event_cb); 1136 if (rc) { 1137 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1138 return rc; 1139 } 1140 1141 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1142 hash_init(cdev->connections); 1143 1144 if (!tasks) 1145 return 0; 1146 1147 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1148 1149 if (!tid_info) { 1150 qed_iscsi_stop(cdev); 1151 return -ENOMEM; 1152 } 1153 1154 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info); 1155 if (rc) { 1156 DP_NOTICE(cdev, "Failed to gather task information\n"); 1157 qed_iscsi_stop(cdev); 1158 kfree(tid_info); 1159 return rc; 1160 } 1161 1162 /* Fill task information */ 1163 tasks->size = tid_info->tid_size; 1164 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1165 memcpy(tasks->blocks, tid_info->blocks, 1166 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1167 1168 kfree(tid_info); 1169 1170 return 0; 1171 } 1172 1173 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1174 u32 *handle, 1175 u32 *fw_cid, void __iomem **p_doorbell) 1176 { 1177 struct qed_hash_iscsi_con *hash_con; 1178 int rc; 1179 1180 /* Allocate a hashed connection */ 1181 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1182 if (!hash_con) 1183 return -ENOMEM; 1184 1185 /* Acquire the connection */ 1186 rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL, 1187 &hash_con->con); 1188 if (rc) { 1189 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1190 kfree(hash_con); 1191 return rc; 1192 } 1193 1194 /* Added the connection to hash table */ 1195 *handle = hash_con->con->icid; 1196 *fw_cid = hash_con->con->fw_cid; 1197 hash_add(cdev->connections, &hash_con->node, *handle); 1198 1199 if (p_doorbell) 1200 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev), 1201 *handle); 1202 1203 return 0; 1204 } 1205 1206 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1207 { 1208 struct qed_hash_iscsi_con *hash_con; 1209 1210 hash_con = qed_iscsi_get_hash(cdev, handle); 1211 if (!hash_con) { 1212 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1213 handle); 1214 return -EINVAL; 1215 } 1216 1217 hlist_del(&hash_con->node); 1218 qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con); 1219 kfree(hash_con); 1220 1221 return 0; 1222 } 1223 1224 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1225 u32 handle, 1226 struct qed_iscsi_params_offload *conn_info) 1227 { 1228 struct qed_hash_iscsi_con *hash_con; 1229 struct qed_iscsi_conn *con; 1230 1231 hash_con = qed_iscsi_get_hash(cdev, handle); 1232 if (!hash_con) { 1233 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1234 handle); 1235 return -EINVAL; 1236 } 1237 1238 /* Update the connection with information from the params */ 1239 con = hash_con->con; 1240 1241 ether_addr_copy(con->local_mac, conn_info->src.mac); 1242 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1243 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1244 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1245 con->local_port = conn_info->src.port; 1246 con->remote_port = conn_info->dst.port; 1247 1248 con->layer_code = conn_info->layer_code; 1249 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1250 con->initial_ack = conn_info->initial_ack; 1251 con->vlan_id = conn_info->vlan_id; 1252 con->tcp_flags = conn_info->tcp_flags; 1253 con->ip_version = conn_info->ip_version; 1254 con->default_cq = conn_info->default_cq; 1255 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1256 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1257 con->rcv_next = conn_info->rcv_next; 1258 con->snd_una = conn_info->snd_una; 1259 con->snd_next = conn_info->snd_next; 1260 con->snd_max = conn_info->snd_max; 1261 con->snd_wnd = conn_info->snd_wnd; 1262 con->rcv_wnd = conn_info->rcv_wnd; 1263 con->snd_wl1 = conn_info->snd_wl1; 1264 con->cwnd = conn_info->cwnd; 1265 con->ss_thresh = conn_info->ss_thresh; 1266 con->srtt = conn_info->srtt; 1267 con->rtt_var = conn_info->rtt_var; 1268 con->ts_recent = conn_info->ts_recent; 1269 con->ts_recent_age = conn_info->ts_recent_age; 1270 con->total_rt = conn_info->total_rt; 1271 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1272 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1273 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1274 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1275 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1276 con->rt_cnt = conn_info->rt_cnt; 1277 con->flow_label = conn_info->flow_label; 1278 con->ka_timeout = conn_info->ka_timeout; 1279 con->ka_interval = conn_info->ka_interval; 1280 con->max_rt_time = conn_info->max_rt_time; 1281 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1282 con->ttl = conn_info->ttl; 1283 con->tos_or_tc = conn_info->tos_or_tc; 1284 con->remote_port = conn_info->remote_port; 1285 con->local_port = conn_info->local_port; 1286 con->mss = conn_info->mss; 1287 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1288 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1289 con->da_timeout_value = conn_info->da_timeout_value; 1290 con->ack_frequency = conn_info->ack_frequency; 1291 1292 /* Set default values on other connection fields */ 1293 con->offl_flags = 0x1; 1294 1295 return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con, 1296 QED_SPQ_MODE_EBLOCK, NULL); 1297 } 1298 1299 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1300 u32 handle, 1301 struct qed_iscsi_params_update *conn_info) 1302 { 1303 struct qed_hash_iscsi_con *hash_con; 1304 struct qed_iscsi_conn *con; 1305 1306 hash_con = qed_iscsi_get_hash(cdev, handle); 1307 if (!hash_con) { 1308 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1309 handle); 1310 return -EINVAL; 1311 } 1312 1313 /* Update the connection with information from the params */ 1314 con = hash_con->con; 1315 con->update_flag = conn_info->update_flag; 1316 con->max_seq_size = conn_info->max_seq_size; 1317 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1318 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1319 con->first_seq_length = conn_info->first_seq_length; 1320 con->exp_stat_sn = conn_info->exp_stat_sn; 1321 1322 return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con, 1323 QED_SPQ_MODE_EBLOCK, NULL); 1324 } 1325 1326 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1327 { 1328 struct qed_hash_iscsi_con *hash_con; 1329 1330 hash_con = qed_iscsi_get_hash(cdev, handle); 1331 if (!hash_con) { 1332 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1333 handle); 1334 return -EINVAL; 1335 } 1336 1337 return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con, 1338 QED_SPQ_MODE_EBLOCK, NULL); 1339 } 1340 1341 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1342 u32 handle, u8 abrt_conn) 1343 { 1344 struct qed_hash_iscsi_con *hash_con; 1345 1346 hash_con = qed_iscsi_get_hash(cdev, handle); 1347 if (!hash_con) { 1348 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1349 handle); 1350 return -EINVAL; 1351 } 1352 1353 hash_con->con->abortive_dsconnect = abrt_conn; 1354 1355 return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con, 1356 QED_SPQ_MODE_EBLOCK, NULL); 1357 } 1358 1359 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1360 { 1361 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats); 1362 } 1363 1364 static int qed_iscsi_change_mac(struct qed_dev *cdev, 1365 u32 handle, const u8 *mac) 1366 { 1367 struct qed_hash_iscsi_con *hash_con; 1368 1369 hash_con = qed_iscsi_get_hash(cdev, handle); 1370 if (!hash_con) { 1371 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1372 handle); 1373 return -EINVAL; 1374 } 1375 1376 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con, 1377 QED_SPQ_MODE_EBLOCK, NULL); 1378 } 1379 1380 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev, 1381 struct qed_mcp_iscsi_stats *stats) 1382 { 1383 struct qed_iscsi_stats proto_stats; 1384 1385 /* Retrieve FW statistics */ 1386 memset(&proto_stats, 0, sizeof(proto_stats)); 1387 if (qed_iscsi_stats(cdev, &proto_stats)) { 1388 DP_VERBOSE(cdev, QED_MSG_STORAGE, 1389 "Failed to collect ISCSI statistics\n"); 1390 return; 1391 } 1392 1393 /* Translate FW statistics into struct */ 1394 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt; 1395 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt; 1396 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt; 1397 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt; 1398 } 1399 1400 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1401 .common = &qed_common_ops_pass, 1402 .ll2 = &qed_ll2_ops_pass, 1403 .fill_dev_info = &qed_fill_iscsi_dev_info, 1404 .register_ops = &qed_register_iscsi_ops, 1405 .start = &qed_iscsi_start, 1406 .stop = &qed_iscsi_stop, 1407 .acquire_conn = &qed_iscsi_acquire_conn, 1408 .release_conn = &qed_iscsi_release_conn, 1409 .offload_conn = &qed_iscsi_offload_conn, 1410 .update_conn = &qed_iscsi_update_conn, 1411 .destroy_conn = &qed_iscsi_destroy_conn, 1412 .clear_sq = &qed_iscsi_clear_conn_sq, 1413 .get_stats = &qed_iscsi_stats, 1414 .change_mac = &qed_iscsi_change_mac, 1415 }; 1416 1417 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1418 { 1419 return &qed_iscsi_ops_pass; 1420 } 1421 EXPORT_SYMBOL(qed_get_iscsi_ops); 1422 1423 void qed_put_iscsi_ops(void) 1424 { 1425 } 1426 EXPORT_SYMBOL(qed_put_iscsi_ops); 1427