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 SET_FIELD(p_init->hdr.flags, 208 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); 209 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; 210 211 val = p_params->half_way_close_timeout; 212 p_init->half_way_close_timeout = cpu_to_le16(val); 213 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 214 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 215 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 216 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + 217 p_params->ll2_ooo_queue_id; 218 219 p_init->func_params.log_page_size = p_params->log_page_size; 220 val = p_params->num_tasks; 221 p_init->func_params.num_tasks = cpu_to_le16(val); 222 p_init->debug_mode.flags = p_params->debug_mode; 223 224 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 225 p_params->glbl_q_params_addr); 226 227 val = p_params->cq_num_entries; 228 p_queue->cq_num_entries = cpu_to_le16(val); 229 val = p_params->cmdq_num_entries; 230 p_queue->cmdq_num_entries = cpu_to_le16(val); 231 p_queue->num_queues = p_params->num_queues; 232 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 233 p_queue->queue_relative_offset = (u8)dval; 234 p_queue->cq_sb_pi = p_params->gl_rq_pi; 235 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 236 237 for (i = 0; i < p_params->num_queues; i++) { 238 val = qed_get_igu_sb_id(p_hwfn, i); 239 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 240 } 241 242 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 243 244 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 245 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 246 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 247 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 248 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 249 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 250 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 251 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 252 253 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 254 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 255 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 256 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 257 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 258 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 259 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 260 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 261 val = p_params->rq_buffer_size; 262 p_queue->rq_buffer_size = cpu_to_le16(val); 263 if (p_params->is_target) { 264 SET_FIELD(p_queue->q_validity, 265 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 266 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 267 SET_FIELD(p_queue->q_validity, 268 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 269 SET_FIELD(p_queue->q_validity, 270 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 271 } else { 272 SET_FIELD(p_queue->q_validity, 273 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 274 } 275 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 276 val = p_params->tx_sws_timer; 277 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 278 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt; 279 280 p_hwfn->p_iscsi_info->event_context = event_context; 281 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 282 283 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI, 284 qed_iscsi_async_event); 285 286 return qed_spq_post(p_hwfn, p_ent, NULL); 287 } 288 289 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 290 struct qed_iscsi_conn *p_conn, 291 enum spq_mode comp_mode, 292 struct qed_spq_comp_cb *p_comp_addr) 293 { 294 struct iscsi_spe_conn_offload *p_ramrod = NULL; 295 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 296 struct tcp_offload_params *p_tcp = NULL; 297 struct qed_spq_entry *p_ent = NULL; 298 struct qed_sp_init_data init_data; 299 dma_addr_t r2tq_pbl_addr; 300 dma_addr_t xhq_pbl_addr; 301 dma_addr_t uhq_pbl_addr; 302 u16 physical_q; 303 int rc = 0; 304 u32 dval; 305 u16 wval; 306 u16 *p; 307 u8 i; 308 309 /* Get SPQ entry */ 310 memset(&init_data, 0, sizeof(init_data)); 311 init_data.cid = p_conn->icid; 312 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 313 init_data.comp_mode = comp_mode; 314 init_data.p_comp_data = p_comp_addr; 315 316 rc = qed_sp_init_request(p_hwfn, &p_ent, 317 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 318 PROTOCOLID_ISCSI, &init_data); 319 if (rc) 320 return rc; 321 322 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 323 324 /* Transmission PQ is the first of the PF */ 325 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 326 p_conn->physical_q0 = cpu_to_le16(physical_q); 327 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 328 329 /* iSCSI Pure-ACK PQ */ 330 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 331 p_conn->physical_q1 = cpu_to_le16(physical_q); 332 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 333 334 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; 335 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, 336 p_conn->layer_code); 337 338 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 339 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 340 341 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 342 343 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 344 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 345 346 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 347 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 348 349 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 350 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 351 352 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 353 p_ramrod->iscsi.flags = p_conn->offl_flags; 354 p_ramrod->iscsi.default_cq = p_conn->default_cq; 355 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 356 357 if (!GET_FIELD(p_ramrod->iscsi.flags, 358 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 359 p_tcp = &p_ramrod->tcp; 360 361 p = (u16 *)p_conn->local_mac; 362 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 363 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 364 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 365 366 p = (u16 *)p_conn->remote_mac; 367 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 368 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 369 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 370 371 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 372 373 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags); 374 p_tcp->ip_version = p_conn->ip_version; 375 for (i = 0; i < 4; i++) { 376 dval = p_conn->remote_ip[i]; 377 p_tcp->remote_ip[i] = cpu_to_le32(dval); 378 dval = p_conn->local_ip[i]; 379 p_tcp->local_ip[i] = cpu_to_le32(dval); 380 } 381 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 382 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 383 384 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 385 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 386 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 387 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 388 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 389 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 390 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 391 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 392 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 393 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 394 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 395 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 396 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 397 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 398 dval = p_conn->ka_timeout_delta; 399 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 400 dval = p_conn->rt_timeout_delta; 401 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 402 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 403 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 404 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 405 p_tcp->rt_cnt = p_conn->rt_cnt; 406 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 407 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 408 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 409 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 410 dval = p_conn->initial_rcv_wnd; 411 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 412 p_tcp->ttl = p_conn->ttl; 413 p_tcp->tos_or_tc = p_conn->tos_or_tc; 414 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 415 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 416 p_tcp->mss = cpu_to_le16(p_conn->mss); 417 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 418 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 419 wval = p_conn->da_timeout_value; 420 p_tcp->da_timeout_value = cpu_to_le16(wval); 421 p_tcp->ack_frequency = p_conn->ack_frequency; 422 p_tcp->connect_mode = p_conn->connect_mode; 423 } else { 424 p_tcp2 = 425 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 426 427 p = (u16 *)p_conn->local_mac; 428 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 429 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 430 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 431 432 p = (u16 *)p_conn->remote_mac; 433 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 434 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 435 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 436 437 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 438 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags); 439 440 p_tcp2->ip_version = p_conn->ip_version; 441 for (i = 0; i < 4; i++) { 442 dval = p_conn->remote_ip[i]; 443 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 444 dval = p_conn->local_ip[i]; 445 p_tcp2->local_ip[i] = cpu_to_le32(dval); 446 } 447 448 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 449 p_tcp2->ttl = p_conn->ttl; 450 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 451 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 452 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 453 p_tcp2->mss = cpu_to_le16(p_conn->mss); 454 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 455 p_tcp2->connect_mode = p_conn->connect_mode; 456 wval = p_conn->syn_ip_payload_length; 457 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 458 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 459 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 460 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd); 461 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt; 462 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 463 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 464 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval); 465 } 466 467 return qed_spq_post(p_hwfn, p_ent, NULL); 468 } 469 470 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 471 struct qed_iscsi_conn *p_conn, 472 enum spq_mode comp_mode, 473 struct qed_spq_comp_cb *p_comp_addr) 474 { 475 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 476 struct qed_spq_entry *p_ent = NULL; 477 struct qed_sp_init_data init_data; 478 int rc = -EINVAL; 479 u32 dval; 480 481 /* Get SPQ entry */ 482 memset(&init_data, 0, sizeof(init_data)); 483 init_data.cid = p_conn->icid; 484 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 485 init_data.comp_mode = comp_mode; 486 init_data.p_comp_data = p_comp_addr; 487 488 rc = qed_sp_init_request(p_hwfn, &p_ent, 489 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 490 PROTOCOLID_ISCSI, &init_data); 491 if (rc) 492 return rc; 493 494 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 495 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; 496 SET_FIELD(p_ramrod->hdr.flags, 497 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 498 499 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 500 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 501 p_ramrod->flags = p_conn->update_flag; 502 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 503 dval = p_conn->max_recv_pdu_length; 504 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 505 dval = p_conn->max_send_pdu_length; 506 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 507 dval = p_conn->first_seq_length; 508 p_ramrod->first_seq_length = cpu_to_le32(dval); 509 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 510 511 return qed_spq_post(p_hwfn, p_ent, NULL); 512 } 513 514 static int 515 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn, 516 struct qed_iscsi_conn *p_conn, 517 enum spq_mode comp_mode, 518 struct qed_spq_comp_cb *p_comp_addr) 519 { 520 struct iscsi_spe_conn_mac_update *p_ramrod = NULL; 521 struct qed_spq_entry *p_ent = NULL; 522 struct qed_sp_init_data init_data; 523 int rc = -EINVAL; 524 u8 ucval; 525 526 /* Get SPQ entry */ 527 memset(&init_data, 0, sizeof(init_data)); 528 init_data.cid = p_conn->icid; 529 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 530 init_data.comp_mode = comp_mode; 531 init_data.p_comp_data = p_comp_addr; 532 533 rc = qed_sp_init_request(p_hwfn, &p_ent, 534 ISCSI_RAMROD_CMD_ID_MAC_UPDATE, 535 PROTOCOLID_ISCSI, &init_data); 536 if (rc) 537 return rc; 538 539 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update; 540 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE; 541 SET_FIELD(p_ramrod->hdr.flags, 542 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 543 544 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 545 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 546 ucval = p_conn->remote_mac[1]; 547 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval; 548 ucval = p_conn->remote_mac[0]; 549 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval; 550 ucval = p_conn->remote_mac[3]; 551 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval; 552 ucval = p_conn->remote_mac[2]; 553 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval; 554 ucval = p_conn->remote_mac[5]; 555 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval; 556 ucval = p_conn->remote_mac[4]; 557 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval; 558 559 return qed_spq_post(p_hwfn, p_ent, NULL); 560 } 561 562 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 563 struct qed_iscsi_conn *p_conn, 564 enum spq_mode comp_mode, 565 struct qed_spq_comp_cb *p_comp_addr) 566 { 567 struct iscsi_spe_conn_termination *p_ramrod = NULL; 568 struct qed_spq_entry *p_ent = NULL; 569 struct qed_sp_init_data init_data; 570 int rc = -EINVAL; 571 572 /* Get SPQ entry */ 573 memset(&init_data, 0, sizeof(init_data)); 574 init_data.cid = p_conn->icid; 575 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 576 init_data.comp_mode = comp_mode; 577 init_data.p_comp_data = p_comp_addr; 578 579 rc = qed_sp_init_request(p_hwfn, &p_ent, 580 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 581 PROTOCOLID_ISCSI, &init_data); 582 if (rc) 583 return rc; 584 585 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 586 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; 587 SET_FIELD(p_ramrod->hdr.flags, 588 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 589 590 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 591 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 592 p_ramrod->abortive = p_conn->abortive_dsconnect; 593 594 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 595 p_conn->tcp_upload_params_phys_addr); 596 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 597 598 return qed_spq_post(p_hwfn, p_ent, NULL); 599 } 600 601 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 602 struct qed_iscsi_conn *p_conn, 603 enum spq_mode comp_mode, 604 struct qed_spq_comp_cb *p_comp_addr) 605 { 606 struct iscsi_slow_path_hdr *p_ramrod = NULL; 607 struct qed_spq_entry *p_ent = NULL; 608 struct qed_sp_init_data init_data; 609 int rc = -EINVAL; 610 611 /* Get SPQ entry */ 612 memset(&init_data, 0, sizeof(init_data)); 613 init_data.cid = p_conn->icid; 614 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 615 init_data.comp_mode = comp_mode; 616 init_data.p_comp_data = p_comp_addr; 617 618 rc = qed_sp_init_request(p_hwfn, &p_ent, 619 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 620 PROTOCOLID_ISCSI, &init_data); 621 if (rc) 622 return rc; 623 624 p_ramrod = &p_ent->ramrod.iscsi_empty; 625 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; 626 SET_FIELD(p_ramrod->flags, 627 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 628 629 return qed_spq_post(p_hwfn, p_ent, NULL); 630 } 631 632 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 633 enum spq_mode comp_mode, 634 struct qed_spq_comp_cb *p_comp_addr) 635 { 636 struct iscsi_spe_func_dstry *p_ramrod = NULL; 637 struct qed_spq_entry *p_ent = NULL; 638 struct qed_sp_init_data init_data; 639 int rc = 0; 640 641 /* Get SPQ entry */ 642 memset(&init_data, 0, sizeof(init_data)); 643 init_data.cid = qed_spq_get_cid(p_hwfn); 644 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 645 init_data.comp_mode = comp_mode; 646 init_data.p_comp_data = p_comp_addr; 647 648 rc = qed_sp_init_request(p_hwfn, &p_ent, 649 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 650 PROTOCOLID_ISCSI, &init_data); 651 if (rc) 652 return rc; 653 654 p_ramrod = &p_ent->ramrod.iscsi_destroy; 655 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; 656 657 rc = qed_spq_post(p_hwfn, p_ent, NULL); 658 659 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI); 660 return rc; 661 } 662 663 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 664 { 665 return (u8 __iomem *)p_hwfn->doorbells + 666 qed_db_addr(cid, DQ_DEMS_LEGACY); 667 } 668 669 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 670 u8 bdq_id) 671 { 672 if (RESC_NUM(p_hwfn, QED_BDQ)) { 673 return (u8 __iomem *)p_hwfn->regview + 674 GTT_BAR0_MAP_REG_MSDM_RAM + 675 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 676 QED_BDQ), 677 bdq_id); 678 } else { 679 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 680 return NULL; 681 } 682 } 683 684 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 685 u8 bdq_id) 686 { 687 if (RESC_NUM(p_hwfn, QED_BDQ)) { 688 return (u8 __iomem *)p_hwfn->regview + 689 GTT_BAR0_MAP_REG_TSDM_RAM + 690 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 691 QED_BDQ), 692 bdq_id); 693 } else { 694 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 695 return NULL; 696 } 697 } 698 699 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn) 700 { 701 if (!p_conn->queue_cnts_virt_addr) 702 goto nomem; 703 memset(p_conn->queue_cnts_virt_addr, 0, 704 sizeof(*p_conn->queue_cnts_virt_addr)); 705 706 if (!p_conn->tcp_upload_params_virt_addr) 707 goto nomem; 708 memset(p_conn->tcp_upload_params_virt_addr, 0, 709 sizeof(*p_conn->tcp_upload_params_virt_addr)); 710 711 if (!p_conn->r2tq.p_virt_addr) 712 goto nomem; 713 qed_chain_pbl_zero_mem(&p_conn->r2tq); 714 715 if (!p_conn->uhq.p_virt_addr) 716 goto nomem; 717 qed_chain_pbl_zero_mem(&p_conn->uhq); 718 719 if (!p_conn->xhq.p_virt_addr) 720 goto nomem; 721 qed_chain_pbl_zero_mem(&p_conn->xhq); 722 723 return 0; 724 nomem: 725 return -ENOMEM; 726 } 727 728 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 729 struct qed_iscsi_conn **p_out_conn) 730 { 731 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 732 struct scsi_terminate_extra_params *p_q_cnts = NULL; 733 struct qed_iscsi_pf_params *p_params = NULL; 734 struct tcp_upload_params *p_tcp = NULL; 735 struct qed_iscsi_conn *p_conn = NULL; 736 int rc = 0; 737 738 /* Try finding a free connection that can be used */ 739 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 740 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 741 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 742 struct qed_iscsi_conn, list_entry); 743 if (p_conn) { 744 list_del(&p_conn->list_entry); 745 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 746 *p_out_conn = p_conn; 747 return 0; 748 } 749 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 750 751 /* Need to allocate a new connection */ 752 p_params = &p_hwfn->pf_params.iscsi_pf_params; 753 754 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 755 if (!p_conn) 756 return -ENOMEM; 757 758 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 759 sizeof(*p_q_cnts), 760 &p_conn->queue_cnts_phys_addr, 761 GFP_KERNEL); 762 if (!p_q_cnts) 763 goto nomem_queue_cnts_param; 764 p_conn->queue_cnts_virt_addr = p_q_cnts; 765 766 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 767 sizeof(*p_tcp), 768 &p_conn->tcp_upload_params_phys_addr, 769 GFP_KERNEL); 770 if (!p_tcp) 771 goto nomem_upload_param; 772 p_conn->tcp_upload_params_virt_addr = p_tcp; 773 774 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 775 QED_CHAIN_PAGE_SIZE / 0x80; 776 rc = qed_chain_alloc(p_hwfn->cdev, 777 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 778 QED_CHAIN_MODE_PBL, 779 QED_CHAIN_CNT_TYPE_U16, 780 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL); 781 if (rc) 782 goto nomem_r2tq; 783 784 uhq_num_elements = p_params->num_uhq_pages_in_ring * 785 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 786 rc = qed_chain_alloc(p_hwfn->cdev, 787 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 788 QED_CHAIN_MODE_PBL, 789 QED_CHAIN_CNT_TYPE_U16, 790 uhq_num_elements, 791 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL); 792 if (rc) 793 goto nomem_uhq; 794 795 xhq_num_elements = uhq_num_elements; 796 rc = qed_chain_alloc(p_hwfn->cdev, 797 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 798 QED_CHAIN_MODE_PBL, 799 QED_CHAIN_CNT_TYPE_U16, 800 xhq_num_elements, 801 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL); 802 if (rc) 803 goto nomem; 804 805 p_conn->free_on_delete = true; 806 *p_out_conn = p_conn; 807 return 0; 808 809 nomem: 810 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 811 nomem_uhq: 812 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 813 nomem_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 nomem_upload_param: 819 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 820 sizeof(struct scsi_terminate_extra_params), 821 p_conn->queue_cnts_virt_addr, 822 p_conn->queue_cnts_phys_addr); 823 nomem_queue_cnts_param: 824 kfree(p_conn); 825 826 return -ENOMEM; 827 } 828 829 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 830 struct qed_iscsi_conn *p_in_conn, 831 struct qed_iscsi_conn **p_out_conn) 832 { 833 struct qed_iscsi_conn *p_conn = NULL; 834 int rc = 0; 835 u32 icid; 836 837 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 838 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 839 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 840 if (rc) 841 return rc; 842 843 /* Use input connection or allocate a new one */ 844 if (p_in_conn) 845 p_conn = p_in_conn; 846 else 847 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 848 849 if (!rc) 850 rc = qed_iscsi_setup_connection(p_conn); 851 852 if (rc) { 853 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 854 qed_cxt_release_cid(p_hwfn, icid); 855 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 856 return rc; 857 } 858 859 p_conn->icid = icid; 860 p_conn->conn_id = (u16)icid; 861 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 862 863 *p_out_conn = p_conn; 864 865 return rc; 866 } 867 868 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 869 struct qed_iscsi_conn *p_conn) 870 { 871 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 872 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 873 qed_cxt_release_cid(p_hwfn, p_conn->icid); 874 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 875 } 876 877 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 878 struct qed_iscsi_conn *p_conn) 879 { 880 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 881 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 882 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 883 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 884 sizeof(struct tcp_upload_params), 885 p_conn->tcp_upload_params_virt_addr, 886 p_conn->tcp_upload_params_phys_addr); 887 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 888 sizeof(struct scsi_terminate_extra_params), 889 p_conn->queue_cnts_virt_addr, 890 p_conn->queue_cnts_phys_addr); 891 kfree(p_conn); 892 } 893 894 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 895 { 896 struct qed_iscsi_info *p_iscsi_info; 897 898 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 899 if (!p_iscsi_info) 900 return -ENOMEM; 901 902 INIT_LIST_HEAD(&p_iscsi_info->free_list); 903 904 p_hwfn->p_iscsi_info = p_iscsi_info; 905 return 0; 906 } 907 908 void qed_iscsi_setup(struct qed_hwfn *p_hwfn) 909 { 910 spin_lock_init(&p_hwfn->p_iscsi_info->lock); 911 } 912 913 void qed_iscsi_free(struct qed_hwfn *p_hwfn) 914 { 915 struct qed_iscsi_conn *p_conn = NULL; 916 917 if (!p_hwfn->p_iscsi_info) 918 return; 919 920 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 921 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 922 struct qed_iscsi_conn, list_entry); 923 if (p_conn) { 924 list_del(&p_conn->list_entry); 925 qed_iscsi_free_connection(p_hwfn, p_conn); 926 } 927 } 928 929 kfree(p_hwfn->p_iscsi_info); 930 p_hwfn->p_iscsi_info = NULL; 931 } 932 933 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 934 struct qed_ptt *p_ptt, 935 struct qed_iscsi_stats *p_stats) 936 { 937 struct tstorm_iscsi_stats_drv tstats; 938 u32 tstats_addr; 939 940 memset(&tstats, 0, sizeof(tstats)); 941 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 942 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 943 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 944 945 p_stats->iscsi_rx_bytes_cnt = 946 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 947 p_stats->iscsi_rx_packet_cnt = 948 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 949 p_stats->iscsi_rx_new_ooo_isle_events_cnt = 950 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt); 951 p_stats->iscsi_cmdq_threshold_cnt = 952 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 953 p_stats->iscsi_rq_threshold_cnt = 954 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 955 p_stats->iscsi_immq_threshold_cnt = 956 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 957 } 958 959 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 960 struct qed_ptt *p_ptt, 961 struct qed_iscsi_stats *p_stats) 962 { 963 struct mstorm_iscsi_stats_drv mstats; 964 u32 mstats_addr; 965 966 memset(&mstats, 0, sizeof(mstats)); 967 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 968 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 969 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 970 971 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 972 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 973 } 974 975 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 976 struct qed_ptt *p_ptt, 977 struct qed_iscsi_stats *p_stats) 978 { 979 struct ustorm_iscsi_stats_drv ustats; 980 u32 ustats_addr; 981 982 memset(&ustats, 0, sizeof(ustats)); 983 ustats_addr = BAR0_MAP_REG_USDM_RAM + 984 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 985 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 986 987 p_stats->iscsi_rx_data_pdu_cnt = 988 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 989 p_stats->iscsi_rx_r2t_pdu_cnt = 990 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 991 p_stats->iscsi_rx_total_pdu_cnt = 992 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 993 } 994 995 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 996 struct qed_ptt *p_ptt, 997 struct qed_iscsi_stats *p_stats) 998 { 999 struct xstorm_iscsi_stats_drv xstats; 1000 u32 xstats_addr; 1001 1002 memset(&xstats, 0, sizeof(xstats)); 1003 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 1004 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1005 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 1006 1007 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 1008 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 1009 p_stats->iscsi_tx_fast_retransmit_event_cnt = 1010 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 1011 } 1012 1013 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 1014 struct qed_ptt *p_ptt, 1015 struct qed_iscsi_stats *p_stats) 1016 { 1017 struct ystorm_iscsi_stats_drv ystats; 1018 u32 ystats_addr; 1019 1020 memset(&ystats, 0, sizeof(ystats)); 1021 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 1022 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1023 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 1024 1025 p_stats->iscsi_tx_data_pdu_cnt = 1026 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 1027 p_stats->iscsi_tx_r2t_pdu_cnt = 1028 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 1029 p_stats->iscsi_tx_total_pdu_cnt = 1030 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 1031 } 1032 1033 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 1034 struct qed_ptt *p_ptt, 1035 struct qed_iscsi_stats *p_stats) 1036 { 1037 struct pstorm_iscsi_stats_drv pstats; 1038 u32 pstats_addr; 1039 1040 memset(&pstats, 0, sizeof(pstats)); 1041 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 1042 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1043 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 1044 1045 p_stats->iscsi_tx_bytes_cnt = 1046 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 1047 p_stats->iscsi_tx_packet_cnt = 1048 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 1049 } 1050 1051 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 1052 struct qed_iscsi_stats *stats) 1053 { 1054 struct qed_ptt *p_ptt; 1055 1056 memset(stats, 0, sizeof(*stats)); 1057 1058 p_ptt = qed_ptt_acquire(p_hwfn); 1059 if (!p_ptt) { 1060 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 1061 return -EAGAIN; 1062 } 1063 1064 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 1065 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 1066 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 1067 1068 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 1069 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 1070 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 1071 1072 qed_ptt_release(p_hwfn, p_ptt); 1073 1074 return 0; 1075 } 1076 1077 struct qed_hash_iscsi_con { 1078 struct hlist_node node; 1079 struct qed_iscsi_conn *con; 1080 }; 1081 1082 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 1083 struct qed_dev_iscsi_info *info) 1084 { 1085 struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev); 1086 1087 int rc; 1088 1089 memset(info, 0, sizeof(*info)); 1090 rc = qed_fill_dev_info(cdev, &info->common); 1091 1092 info->primary_dbq_rq_addr = 1093 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 1094 info->secondary_bdq_rq_addr = 1095 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 1096 1097 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ); 1098 1099 return rc; 1100 } 1101 1102 static void qed_register_iscsi_ops(struct qed_dev *cdev, 1103 struct qed_iscsi_cb_ops *ops, void *cookie) 1104 { 1105 cdev->protocol_ops.iscsi = ops; 1106 cdev->ops_cookie = cookie; 1107 } 1108 1109 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 1110 u32 handle) 1111 { 1112 struct qed_hash_iscsi_con *hash_con = NULL; 1113 1114 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 1115 return NULL; 1116 1117 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 1118 if (hash_con->con->icid == handle) 1119 break; 1120 } 1121 1122 if (!hash_con || (hash_con->con->icid != handle)) 1123 return NULL; 1124 1125 return hash_con; 1126 } 1127 1128 static int qed_iscsi_stop(struct qed_dev *cdev) 1129 { 1130 int rc; 1131 1132 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1133 DP_NOTICE(cdev, "iscsi already stopped\n"); 1134 return 0; 1135 } 1136 1137 if (!hash_empty(cdev->connections)) { 1138 DP_NOTICE(cdev, 1139 "Can't stop iscsi - not all connections were returned\n"); 1140 return -EINVAL; 1141 } 1142 1143 /* Stop the iscsi */ 1144 rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1145 NULL); 1146 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1147 1148 return rc; 1149 } 1150 1151 static int qed_iscsi_start(struct qed_dev *cdev, 1152 struct qed_iscsi_tid *tasks, 1153 void *event_context, 1154 iscsi_event_cb_t async_event_cb) 1155 { 1156 int rc; 1157 struct qed_tid_mem *tid_info; 1158 1159 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1160 DP_NOTICE(cdev, "iscsi already started;\n"); 1161 return 0; 1162 } 1163 1164 rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1165 NULL, event_context, async_event_cb); 1166 if (rc) { 1167 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1168 return rc; 1169 } 1170 1171 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1172 hash_init(cdev->connections); 1173 1174 if (!tasks) 1175 return 0; 1176 1177 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1178 1179 if (!tid_info) { 1180 qed_iscsi_stop(cdev); 1181 return -ENOMEM; 1182 } 1183 1184 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info); 1185 if (rc) { 1186 DP_NOTICE(cdev, "Failed to gather task information\n"); 1187 qed_iscsi_stop(cdev); 1188 kfree(tid_info); 1189 return rc; 1190 } 1191 1192 /* Fill task information */ 1193 tasks->size = tid_info->tid_size; 1194 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1195 memcpy(tasks->blocks, tid_info->blocks, 1196 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1197 1198 kfree(tid_info); 1199 1200 return 0; 1201 } 1202 1203 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1204 u32 *handle, 1205 u32 *fw_cid, void __iomem **p_doorbell) 1206 { 1207 struct qed_hash_iscsi_con *hash_con; 1208 int rc; 1209 1210 /* Allocate a hashed connection */ 1211 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1212 if (!hash_con) 1213 return -ENOMEM; 1214 1215 /* Acquire the connection */ 1216 rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL, 1217 &hash_con->con); 1218 if (rc) { 1219 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1220 kfree(hash_con); 1221 return rc; 1222 } 1223 1224 /* Added the connection to hash table */ 1225 *handle = hash_con->con->icid; 1226 *fw_cid = hash_con->con->fw_cid; 1227 hash_add(cdev->connections, &hash_con->node, *handle); 1228 1229 if (p_doorbell) 1230 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev), 1231 *handle); 1232 1233 return 0; 1234 } 1235 1236 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1237 { 1238 struct qed_hash_iscsi_con *hash_con; 1239 1240 hash_con = qed_iscsi_get_hash(cdev, handle); 1241 if (!hash_con) { 1242 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1243 handle); 1244 return -EINVAL; 1245 } 1246 1247 hlist_del(&hash_con->node); 1248 qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con); 1249 kfree(hash_con); 1250 1251 return 0; 1252 } 1253 1254 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1255 u32 handle, 1256 struct qed_iscsi_params_offload *conn_info) 1257 { 1258 struct qed_hash_iscsi_con *hash_con; 1259 struct qed_iscsi_conn *con; 1260 1261 hash_con = qed_iscsi_get_hash(cdev, handle); 1262 if (!hash_con) { 1263 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1264 handle); 1265 return -EINVAL; 1266 } 1267 1268 /* Update the connection with information from the params */ 1269 con = hash_con->con; 1270 1271 ether_addr_copy(con->local_mac, conn_info->src.mac); 1272 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1273 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1274 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1275 con->local_port = conn_info->src.port; 1276 con->remote_port = conn_info->dst.port; 1277 1278 con->layer_code = conn_info->layer_code; 1279 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1280 con->initial_ack = conn_info->initial_ack; 1281 con->vlan_id = conn_info->vlan_id; 1282 con->tcp_flags = conn_info->tcp_flags; 1283 con->ip_version = conn_info->ip_version; 1284 con->default_cq = conn_info->default_cq; 1285 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1286 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1287 con->rcv_next = conn_info->rcv_next; 1288 con->snd_una = conn_info->snd_una; 1289 con->snd_next = conn_info->snd_next; 1290 con->snd_max = conn_info->snd_max; 1291 con->snd_wnd = conn_info->snd_wnd; 1292 con->rcv_wnd = conn_info->rcv_wnd; 1293 con->snd_wl1 = conn_info->snd_wl1; 1294 con->cwnd = conn_info->cwnd; 1295 con->ss_thresh = conn_info->ss_thresh; 1296 con->srtt = conn_info->srtt; 1297 con->rtt_var = conn_info->rtt_var; 1298 con->ts_recent = conn_info->ts_recent; 1299 con->ts_recent_age = conn_info->ts_recent_age; 1300 con->total_rt = conn_info->total_rt; 1301 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1302 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1303 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1304 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1305 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1306 con->rt_cnt = conn_info->rt_cnt; 1307 con->flow_label = conn_info->flow_label; 1308 con->ka_timeout = conn_info->ka_timeout; 1309 con->ka_interval = conn_info->ka_interval; 1310 con->max_rt_time = conn_info->max_rt_time; 1311 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1312 con->ttl = conn_info->ttl; 1313 con->tos_or_tc = conn_info->tos_or_tc; 1314 con->remote_port = conn_info->remote_port; 1315 con->local_port = conn_info->local_port; 1316 con->mss = conn_info->mss; 1317 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1318 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1319 con->da_timeout_value = conn_info->da_timeout_value; 1320 con->ack_frequency = conn_info->ack_frequency; 1321 1322 /* Set default values on other connection fields */ 1323 con->offl_flags = 0x1; 1324 1325 return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con, 1326 QED_SPQ_MODE_EBLOCK, NULL); 1327 } 1328 1329 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1330 u32 handle, 1331 struct qed_iscsi_params_update *conn_info) 1332 { 1333 struct qed_hash_iscsi_con *hash_con; 1334 struct qed_iscsi_conn *con; 1335 1336 hash_con = qed_iscsi_get_hash(cdev, handle); 1337 if (!hash_con) { 1338 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1339 handle); 1340 return -EINVAL; 1341 } 1342 1343 /* Update the connection with information from the params */ 1344 con = hash_con->con; 1345 con->update_flag = conn_info->update_flag; 1346 con->max_seq_size = conn_info->max_seq_size; 1347 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1348 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1349 con->first_seq_length = conn_info->first_seq_length; 1350 con->exp_stat_sn = conn_info->exp_stat_sn; 1351 1352 return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con, 1353 QED_SPQ_MODE_EBLOCK, NULL); 1354 } 1355 1356 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1357 { 1358 struct qed_hash_iscsi_con *hash_con; 1359 1360 hash_con = qed_iscsi_get_hash(cdev, handle); 1361 if (!hash_con) { 1362 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1363 handle); 1364 return -EINVAL; 1365 } 1366 1367 return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con, 1368 QED_SPQ_MODE_EBLOCK, NULL); 1369 } 1370 1371 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1372 u32 handle, u8 abrt_conn) 1373 { 1374 struct qed_hash_iscsi_con *hash_con; 1375 1376 hash_con = qed_iscsi_get_hash(cdev, handle); 1377 if (!hash_con) { 1378 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1379 handle); 1380 return -EINVAL; 1381 } 1382 1383 hash_con->con->abortive_dsconnect = abrt_conn; 1384 1385 return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con, 1386 QED_SPQ_MODE_EBLOCK, NULL); 1387 } 1388 1389 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1390 { 1391 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats); 1392 } 1393 1394 static int qed_iscsi_change_mac(struct qed_dev *cdev, 1395 u32 handle, const u8 *mac) 1396 { 1397 struct qed_hash_iscsi_con *hash_con; 1398 1399 hash_con = qed_iscsi_get_hash(cdev, handle); 1400 if (!hash_con) { 1401 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1402 handle); 1403 return -EINVAL; 1404 } 1405 1406 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con, 1407 QED_SPQ_MODE_EBLOCK, NULL); 1408 } 1409 1410 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev, 1411 struct qed_mcp_iscsi_stats *stats) 1412 { 1413 struct qed_iscsi_stats proto_stats; 1414 1415 /* Retrieve FW statistics */ 1416 memset(&proto_stats, 0, sizeof(proto_stats)); 1417 if (qed_iscsi_stats(cdev, &proto_stats)) { 1418 DP_VERBOSE(cdev, QED_MSG_STORAGE, 1419 "Failed to collect ISCSI statistics\n"); 1420 return; 1421 } 1422 1423 /* Translate FW statistics into struct */ 1424 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt; 1425 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt; 1426 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt; 1427 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt; 1428 } 1429 1430 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1431 .common = &qed_common_ops_pass, 1432 .ll2 = &qed_ll2_ops_pass, 1433 .fill_dev_info = &qed_fill_iscsi_dev_info, 1434 .register_ops = &qed_register_iscsi_ops, 1435 .start = &qed_iscsi_start, 1436 .stop = &qed_iscsi_stop, 1437 .acquire_conn = &qed_iscsi_acquire_conn, 1438 .release_conn = &qed_iscsi_release_conn, 1439 .offload_conn = &qed_iscsi_offload_conn, 1440 .update_conn = &qed_iscsi_update_conn, 1441 .destroy_conn = &qed_iscsi_destroy_conn, 1442 .clear_sq = &qed_iscsi_clear_conn_sq, 1443 .get_stats = &qed_iscsi_stats, 1444 .change_mac = &qed_iscsi_change_mac, 1445 }; 1446 1447 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1448 { 1449 return &qed_iscsi_ops_pass; 1450 } 1451 EXPORT_SYMBOL(qed_get_iscsi_ops); 1452 1453 void qed_put_iscsi_ops(void) 1454 { 1455 } 1456 EXPORT_SYMBOL(qed_put_iscsi_ops); 1457