1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 /* QLogic qed NIC Driver 3 * Copyright (c) 2015-2017 QLogic Corporation 4 * Copyright (c) 2019-2020 Marvell International Ltd. 5 */ 6 7 #include <linux/types.h> 8 #include <asm/byteorder.h> 9 #include <asm/param.h> 10 #include <linux/delay.h> 11 #include <linux/dma-mapping.h> 12 #include <linux/etherdevice.h> 13 #include <linux/interrupt.h> 14 #include <linux/kernel.h> 15 #include <linux/log2.h> 16 #include <linux/module.h> 17 #include <linux/pci.h> 18 #include <linux/slab.h> 19 #include <linux/stddef.h> 20 #include <linux/string.h> 21 #include <linux/workqueue.h> 22 #include <linux/errno.h> 23 #include <linux/list.h> 24 #include <linux/spinlock.h> 25 #include <linux/qed/qed_iscsi_if.h> 26 #include "qed.h" 27 #include "qed_cxt.h" 28 #include "qed_dev_api.h" 29 #include "qed_hsi.h" 30 #include "qed_hw.h" 31 #include "qed_int.h" 32 #include "qed_iro_hsi.h" 33 #include "qed_iscsi.h" 34 #include "qed_ll2.h" 35 #include "qed_mcp.h" 36 #include "qed_sp.h" 37 #include "qed_sriov.h" 38 #include "qed_reg_addr.h" 39 40 struct qed_iscsi_conn { 41 struct list_head list_entry; 42 bool free_on_delete; 43 44 u16 conn_id; 45 u32 icid; 46 u32 fw_cid; 47 48 u8 layer_code; 49 u8 offl_flags; 50 u8 connect_mode; 51 u32 initial_ack; 52 dma_addr_t sq_pbl_addr; 53 struct qed_chain r2tq; 54 struct qed_chain xhq; 55 struct qed_chain uhq; 56 57 struct tcp_upload_params *tcp_upload_params_virt_addr; 58 dma_addr_t tcp_upload_params_phys_addr; 59 struct scsi_terminate_extra_params *queue_cnts_virt_addr; 60 dma_addr_t queue_cnts_phys_addr; 61 dma_addr_t syn_phy_addr; 62 63 u16 syn_ip_payload_length; 64 u8 local_mac[6]; 65 u8 remote_mac[6]; 66 u16 vlan_id; 67 u16 tcp_flags; 68 u8 ip_version; 69 u32 remote_ip[4]; 70 u32 local_ip[4]; 71 u8 ka_max_probe_cnt; 72 u8 dup_ack_theshold; 73 u32 rcv_next; 74 u32 snd_una; 75 u32 snd_next; 76 u32 snd_max; 77 u32 snd_wnd; 78 u32 rcv_wnd; 79 u32 snd_wl1; 80 u32 cwnd; 81 u32 ss_thresh; 82 u16 srtt; 83 u16 rtt_var; 84 u32 ts_recent; 85 u32 ts_recent_age; 86 u32 total_rt; 87 u32 ka_timeout_delta; 88 u32 rt_timeout_delta; 89 u8 dup_ack_cnt; 90 u8 snd_wnd_probe_cnt; 91 u8 ka_probe_cnt; 92 u8 rt_cnt; 93 u32 flow_label; 94 u32 ka_timeout; 95 u32 ka_interval; 96 u32 max_rt_time; 97 u32 initial_rcv_wnd; 98 u8 ttl; 99 u8 tos_or_tc; 100 u16 remote_port; 101 u16 local_port; 102 u16 mss; 103 u8 snd_wnd_scale; 104 u8 rcv_wnd_scale; 105 u16 da_timeout_value; 106 u8 ack_frequency; 107 108 u8 update_flag; 109 u8 default_cq; 110 u32 max_seq_size; 111 u32 max_recv_pdu_length; 112 u32 max_send_pdu_length; 113 u32 first_seq_length; 114 u32 exp_stat_sn; 115 u32 stat_sn; 116 u16 physical_q0; 117 u16 physical_q1; 118 u8 abortive_dsconnect; 119 }; 120 121 static int qed_iscsi_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code, 122 __le16 echo, union event_ring_data *data, 123 u8 fw_return_code) 124 { 125 if (p_hwfn->p_iscsi_info->event_cb) { 126 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info; 127 128 return p_iscsi->event_cb(p_iscsi->event_context, 129 fw_event_code, data); 130 } else { 131 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n"); 132 return -EINVAL; 133 } 134 } 135 136 static int 137 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 138 enum spq_mode comp_mode, 139 struct qed_spq_comp_cb *p_comp_addr, 140 void *event_context, iscsi_event_cb_t async_event_cb) 141 { 142 struct iscsi_init_ramrod_params *p_ramrod = NULL; 143 struct scsi_init_func_queues *p_queue = NULL; 144 struct qed_iscsi_pf_params *p_params = NULL; 145 struct iscsi_spe_func_init *p_init = NULL; 146 struct qed_spq_entry *p_ent = NULL; 147 struct qed_sp_init_data init_data; 148 int rc = 0; 149 u32 dval; 150 u16 val; 151 u8 i; 152 153 /* Get SPQ entry */ 154 memset(&init_data, 0, sizeof(init_data)); 155 init_data.cid = qed_spq_get_cid(p_hwfn); 156 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 157 init_data.comp_mode = comp_mode; 158 init_data.p_comp_data = p_comp_addr; 159 160 rc = qed_sp_init_request(p_hwfn, &p_ent, 161 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 162 PROTOCOLID_TCP_ULP, &init_data); 163 if (rc) 164 return rc; 165 166 p_ramrod = &p_ent->ramrod.iscsi_init; 167 p_init = &p_ramrod->iscsi_init_spe; 168 p_params = &p_hwfn->pf_params.iscsi_pf_params; 169 p_queue = &p_init->q_params; 170 171 /* Sanity */ 172 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) { 173 DP_ERR(p_hwfn, 174 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n", 175 p_params->num_queues, 176 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]); 177 qed_sp_destroy_request(p_hwfn, p_ent); 178 return -EINVAL; 179 } 180 181 val = p_params->half_way_close_timeout; 182 p_init->half_way_close_timeout = cpu_to_le16(val); 183 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 184 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 185 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 186 p_init->ll2_rx_queue_id = 187 p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + 188 p_params->ll2_ooo_queue_id; 189 190 p_init->func_params.log_page_size = p_params->log_page_size; 191 val = p_params->num_tasks; 192 p_init->func_params.num_tasks = cpu_to_le16(val); 193 p_init->debug_mode.flags = p_params->debug_mode; 194 195 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 196 p_params->glbl_q_params_addr); 197 198 val = p_params->cq_num_entries; 199 p_queue->cq_num_entries = cpu_to_le16(val); 200 val = p_params->cmdq_num_entries; 201 p_queue->cmdq_num_entries = cpu_to_le16(val); 202 p_queue->num_queues = p_params->num_queues; 203 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 204 p_queue->queue_relative_offset = (u8)dval; 205 p_queue->cq_sb_pi = p_params->gl_rq_pi; 206 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 207 208 for (i = 0; i < p_params->num_queues; i++) { 209 val = qed_get_igu_sb_id(p_hwfn, i); 210 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 211 } 212 213 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 214 215 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 216 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 217 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 218 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 219 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 220 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 221 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 222 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 223 224 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 225 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 226 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 227 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 228 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 229 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 230 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 231 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 232 val = p_params->rq_buffer_size; 233 p_queue->rq_buffer_size = cpu_to_le16(val); 234 if (p_params->is_target) { 235 SET_FIELD(p_queue->q_validity, 236 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 237 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 238 SET_FIELD(p_queue->q_validity, 239 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 240 SET_FIELD(p_queue->q_validity, 241 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 242 } else { 243 SET_FIELD(p_queue->q_validity, 244 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 245 } 246 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 247 val = p_params->tx_sws_timer; 248 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 249 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt; 250 251 p_hwfn->p_iscsi_info->event_context = event_context; 252 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 253 254 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_TCP_ULP, 255 qed_iscsi_async_event); 256 257 return qed_spq_post(p_hwfn, p_ent, NULL); 258 } 259 260 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 261 struct qed_iscsi_conn *p_conn, 262 enum spq_mode comp_mode, 263 struct qed_spq_comp_cb *p_comp_addr) 264 { 265 struct iscsi_spe_conn_offload *p_ramrod = NULL; 266 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 267 struct tcp_offload_params *p_tcp = NULL; 268 struct qed_spq_entry *p_ent = NULL; 269 struct qed_sp_init_data init_data; 270 dma_addr_t r2tq_pbl_addr; 271 dma_addr_t xhq_pbl_addr; 272 dma_addr_t uhq_pbl_addr; 273 u16 physical_q; 274 __le16 tmp; 275 int rc = 0; 276 u32 dval; 277 u16 wval; 278 u16 *p; 279 u8 i; 280 281 /* Get SPQ entry */ 282 memset(&init_data, 0, sizeof(init_data)); 283 init_data.cid = p_conn->icid; 284 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 285 init_data.comp_mode = comp_mode; 286 init_data.p_comp_data = p_comp_addr; 287 288 rc = qed_sp_init_request(p_hwfn, &p_ent, 289 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 290 PROTOCOLID_TCP_ULP, &init_data); 291 if (rc) 292 return rc; 293 294 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 295 296 /* Transmission PQ is the first of the PF */ 297 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 298 p_conn->physical_q0 = physical_q; 299 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 300 301 /* iSCSI Pure-ACK PQ */ 302 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 303 p_conn->physical_q1 = physical_q; 304 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 305 306 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 307 308 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 309 310 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 311 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 312 313 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 314 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 315 316 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 317 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 318 319 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 320 p_ramrod->iscsi.flags = p_conn->offl_flags; 321 p_ramrod->iscsi.default_cq = p_conn->default_cq; 322 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 323 324 if (!GET_FIELD(p_ramrod->iscsi.flags, 325 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 326 p_tcp = &p_ramrod->tcp; 327 328 p = (u16 *)p_conn->local_mac; 329 tmp = cpu_to_le16(get_unaligned_be16(p)); 330 p_tcp->local_mac_addr_hi = tmp; 331 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 332 p_tcp->local_mac_addr_mid = tmp; 333 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 334 p_tcp->local_mac_addr_lo = tmp; 335 336 p = (u16 *)p_conn->remote_mac; 337 tmp = cpu_to_le16(get_unaligned_be16(p)); 338 p_tcp->remote_mac_addr_hi = tmp; 339 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 340 p_tcp->remote_mac_addr_mid = tmp; 341 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 342 p_tcp->remote_mac_addr_lo = tmp; 343 344 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 345 346 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags); 347 p_tcp->ip_version = p_conn->ip_version; 348 for (i = 0; i < 4; i++) { 349 dval = p_conn->remote_ip[i]; 350 p_tcp->remote_ip[i] = cpu_to_le32(dval); 351 dval = p_conn->local_ip[i]; 352 p_tcp->local_ip[i] = cpu_to_le32(dval); 353 } 354 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 355 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 356 357 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 358 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 359 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 360 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 361 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 362 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 363 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 364 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 365 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 366 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 367 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 368 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 369 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 370 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 371 dval = p_conn->ka_timeout_delta; 372 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 373 dval = p_conn->rt_timeout_delta; 374 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 375 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 376 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 377 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 378 p_tcp->rt_cnt = p_conn->rt_cnt; 379 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 380 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 381 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 382 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 383 dval = p_conn->initial_rcv_wnd; 384 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 385 p_tcp->ttl = p_conn->ttl; 386 p_tcp->tos_or_tc = p_conn->tos_or_tc; 387 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 388 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 389 p_tcp->mss = cpu_to_le16(p_conn->mss); 390 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 391 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 392 wval = p_conn->da_timeout_value; 393 p_tcp->da_timeout_value = cpu_to_le16(wval); 394 p_tcp->ack_frequency = p_conn->ack_frequency; 395 p_tcp->connect_mode = p_conn->connect_mode; 396 } else { 397 p_tcp2 = 398 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 399 400 p = (u16 *)p_conn->local_mac; 401 tmp = cpu_to_le16(get_unaligned_be16(p)); 402 p_tcp2->local_mac_addr_hi = tmp; 403 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 404 p_tcp2->local_mac_addr_mid = tmp; 405 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 406 p_tcp2->local_mac_addr_lo = tmp; 407 408 p = (u16 *)p_conn->remote_mac; 409 tmp = cpu_to_le16(get_unaligned_be16(p)); 410 p_tcp2->remote_mac_addr_hi = tmp; 411 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 412 p_tcp2->remote_mac_addr_mid = tmp; 413 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 414 p_tcp2->remote_mac_addr_lo = tmp; 415 416 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 417 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags); 418 419 p_tcp2->ip_version = p_conn->ip_version; 420 for (i = 0; i < 4; i++) { 421 dval = p_conn->remote_ip[i]; 422 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 423 dval = p_conn->local_ip[i]; 424 p_tcp2->local_ip[i] = cpu_to_le32(dval); 425 } 426 427 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 428 p_tcp2->ttl = p_conn->ttl; 429 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 430 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 431 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 432 p_tcp2->mss = cpu_to_le16(p_conn->mss); 433 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 434 p_tcp2->connect_mode = p_conn->connect_mode; 435 wval = p_conn->syn_ip_payload_length; 436 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 437 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 438 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 439 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd); 440 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt; 441 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 442 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 443 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval); 444 } 445 446 return qed_spq_post(p_hwfn, p_ent, NULL); 447 } 448 449 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 450 struct qed_iscsi_conn *p_conn, 451 enum spq_mode comp_mode, 452 struct qed_spq_comp_cb *p_comp_addr) 453 { 454 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 455 struct qed_spq_entry *p_ent = NULL; 456 struct qed_sp_init_data init_data; 457 int rc; 458 u32 dval; 459 460 /* Get SPQ entry */ 461 memset(&init_data, 0, sizeof(init_data)); 462 init_data.cid = p_conn->icid; 463 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 464 init_data.comp_mode = comp_mode; 465 init_data.p_comp_data = p_comp_addr; 466 467 rc = qed_sp_init_request(p_hwfn, &p_ent, 468 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 469 PROTOCOLID_TCP_ULP, &init_data); 470 if (rc) 471 return rc; 472 473 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 474 475 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 476 p_ramrod->flags = p_conn->update_flag; 477 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 478 dval = p_conn->max_recv_pdu_length; 479 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 480 dval = p_conn->max_send_pdu_length; 481 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 482 dval = p_conn->first_seq_length; 483 p_ramrod->first_seq_length = cpu_to_le32(dval); 484 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 485 486 return qed_spq_post(p_hwfn, p_ent, NULL); 487 } 488 489 static int 490 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn, 491 struct qed_iscsi_conn *p_conn, 492 enum spq_mode comp_mode, 493 struct qed_spq_comp_cb *p_comp_addr) 494 { 495 struct iscsi_spe_conn_mac_update *p_ramrod = NULL; 496 struct qed_spq_entry *p_ent = NULL; 497 struct qed_sp_init_data init_data; 498 int rc = -EINVAL; 499 u8 ucval; 500 501 /* Get SPQ entry */ 502 memset(&init_data, 0, sizeof(init_data)); 503 init_data.cid = p_conn->icid; 504 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 505 init_data.comp_mode = comp_mode; 506 init_data.p_comp_data = p_comp_addr; 507 508 rc = qed_sp_init_request(p_hwfn, &p_ent, 509 ISCSI_RAMROD_CMD_ID_MAC_UPDATE, 510 PROTOCOLID_TCP_ULP, &init_data); 511 if (rc) 512 return rc; 513 514 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update; 515 516 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 517 ucval = p_conn->remote_mac[1]; 518 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval; 519 ucval = p_conn->remote_mac[0]; 520 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval; 521 ucval = p_conn->remote_mac[3]; 522 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval; 523 ucval = p_conn->remote_mac[2]; 524 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval; 525 ucval = p_conn->remote_mac[5]; 526 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval; 527 ucval = p_conn->remote_mac[4]; 528 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval; 529 530 return qed_spq_post(p_hwfn, p_ent, NULL); 531 } 532 533 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 534 struct qed_iscsi_conn *p_conn, 535 enum spq_mode comp_mode, 536 struct qed_spq_comp_cb *p_comp_addr) 537 { 538 struct iscsi_spe_conn_termination *p_ramrod = NULL; 539 struct qed_spq_entry *p_ent = NULL; 540 struct qed_sp_init_data init_data; 541 int rc = -EINVAL; 542 543 /* Get SPQ entry */ 544 memset(&init_data, 0, sizeof(init_data)); 545 init_data.cid = p_conn->icid; 546 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 547 init_data.comp_mode = comp_mode; 548 init_data.p_comp_data = p_comp_addr; 549 550 rc = qed_sp_init_request(p_hwfn, &p_ent, 551 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 552 PROTOCOLID_TCP_ULP, &init_data); 553 if (rc) 554 return rc; 555 556 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 557 558 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 559 p_ramrod->abortive = p_conn->abortive_dsconnect; 560 561 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 562 p_conn->tcp_upload_params_phys_addr); 563 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 564 565 return qed_spq_post(p_hwfn, p_ent, NULL); 566 } 567 568 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 569 struct qed_iscsi_conn *p_conn, 570 enum spq_mode comp_mode, 571 struct qed_spq_comp_cb *p_comp_addr) 572 { 573 struct qed_spq_entry *p_ent = NULL; 574 struct qed_sp_init_data init_data; 575 int rc = -EINVAL; 576 577 /* Get SPQ entry */ 578 memset(&init_data, 0, sizeof(init_data)); 579 init_data.cid = p_conn->icid; 580 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 581 init_data.comp_mode = comp_mode; 582 init_data.p_comp_data = p_comp_addr; 583 584 rc = qed_sp_init_request(p_hwfn, &p_ent, 585 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 586 PROTOCOLID_TCP_ULP, &init_data); 587 if (rc) 588 return rc; 589 590 return qed_spq_post(p_hwfn, p_ent, NULL); 591 } 592 593 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 594 enum spq_mode comp_mode, 595 struct qed_spq_comp_cb *p_comp_addr) 596 { 597 struct qed_spq_entry *p_ent = NULL; 598 struct qed_sp_init_data init_data; 599 int rc = 0; 600 601 /* Get SPQ entry */ 602 memset(&init_data, 0, sizeof(init_data)); 603 init_data.cid = qed_spq_get_cid(p_hwfn); 604 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 605 init_data.comp_mode = comp_mode; 606 init_data.p_comp_data = p_comp_addr; 607 608 rc = qed_sp_init_request(p_hwfn, &p_ent, 609 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 610 PROTOCOLID_TCP_ULP, &init_data); 611 if (rc) 612 return rc; 613 614 rc = qed_spq_post(p_hwfn, p_ent, NULL); 615 616 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_TCP_ULP); 617 return rc; 618 } 619 620 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 621 { 622 return (u8 __iomem *)p_hwfn->doorbells + 623 qed_db_addr(cid, DQ_DEMS_LEGACY); 624 } 625 626 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 627 u8 bdq_id) 628 { 629 if (RESC_NUM(p_hwfn, QED_BDQ)) { 630 return (u8 __iomem *)p_hwfn->regview + 631 GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_MSDM_RAM, 632 MSTORM_SCSI_BDQ_EXT_PROD, 633 RESC_START(p_hwfn, QED_BDQ), bdq_id); 634 } else { 635 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 636 return NULL; 637 } 638 } 639 640 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 641 u8 bdq_id) 642 { 643 if (RESC_NUM(p_hwfn, QED_BDQ)) { 644 return (u8 __iomem *)p_hwfn->regview + 645 GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_TSDM_RAM, 646 TSTORM_SCSI_BDQ_EXT_PROD, 647 RESC_START(p_hwfn, QED_BDQ), bdq_id); 648 } else { 649 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 650 return NULL; 651 } 652 } 653 654 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn) 655 { 656 if (!p_conn->queue_cnts_virt_addr) 657 goto nomem; 658 memset(p_conn->queue_cnts_virt_addr, 0, 659 sizeof(*p_conn->queue_cnts_virt_addr)); 660 661 if (!p_conn->tcp_upload_params_virt_addr) 662 goto nomem; 663 memset(p_conn->tcp_upload_params_virt_addr, 0, 664 sizeof(*p_conn->tcp_upload_params_virt_addr)); 665 666 if (!p_conn->r2tq.p_virt_addr) 667 goto nomem; 668 qed_chain_pbl_zero_mem(&p_conn->r2tq); 669 670 if (!p_conn->uhq.p_virt_addr) 671 goto nomem; 672 qed_chain_pbl_zero_mem(&p_conn->uhq); 673 674 if (!p_conn->xhq.p_virt_addr) 675 goto nomem; 676 qed_chain_pbl_zero_mem(&p_conn->xhq); 677 678 return 0; 679 nomem: 680 return -ENOMEM; 681 } 682 683 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 684 struct qed_iscsi_conn **p_out_conn) 685 { 686 struct scsi_terminate_extra_params *p_q_cnts = NULL; 687 struct qed_iscsi_pf_params *p_params = NULL; 688 struct qed_chain_init_params params = { 689 .mode = QED_CHAIN_MODE_PBL, 690 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 691 .cnt_type = QED_CHAIN_CNT_TYPE_U16, 692 }; 693 struct tcp_upload_params *p_tcp = NULL; 694 struct qed_iscsi_conn *p_conn = NULL; 695 int rc = 0; 696 697 /* Try finding a free connection that can be used */ 698 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 699 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 700 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 701 struct qed_iscsi_conn, list_entry); 702 if (p_conn) { 703 list_del(&p_conn->list_entry); 704 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 705 *p_out_conn = p_conn; 706 return 0; 707 } 708 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 709 710 /* Need to allocate a new connection */ 711 p_params = &p_hwfn->pf_params.iscsi_pf_params; 712 713 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 714 if (!p_conn) 715 return -ENOMEM; 716 717 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 718 sizeof(*p_q_cnts), 719 &p_conn->queue_cnts_phys_addr, 720 GFP_KERNEL); 721 if (!p_q_cnts) 722 goto nomem_queue_cnts_param; 723 p_conn->queue_cnts_virt_addr = p_q_cnts; 724 725 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 726 sizeof(*p_tcp), 727 &p_conn->tcp_upload_params_phys_addr, 728 GFP_KERNEL); 729 if (!p_tcp) 730 goto nomem_upload_param; 731 p_conn->tcp_upload_params_virt_addr = p_tcp; 732 733 params.num_elems = p_params->num_r2tq_pages_in_ring * 734 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_wqe); 735 params.elem_size = sizeof(struct iscsi_wqe); 736 737 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->r2tq, ¶ms); 738 if (rc) 739 goto nomem_r2tq; 740 741 params.num_elems = p_params->num_uhq_pages_in_ring * 742 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 743 params.elem_size = sizeof(struct iscsi_uhqe); 744 745 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->uhq, ¶ms); 746 if (rc) 747 goto nomem_uhq; 748 749 params.elem_size = sizeof(struct iscsi_xhqe); 750 751 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->xhq, ¶ms); 752 if (rc) 753 goto nomem; 754 755 p_conn->free_on_delete = true; 756 *p_out_conn = p_conn; 757 return 0; 758 759 nomem: 760 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 761 nomem_uhq: 762 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 763 nomem_r2tq: 764 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 765 sizeof(struct tcp_upload_params), 766 p_conn->tcp_upload_params_virt_addr, 767 p_conn->tcp_upload_params_phys_addr); 768 nomem_upload_param: 769 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 770 sizeof(struct scsi_terminate_extra_params), 771 p_conn->queue_cnts_virt_addr, 772 p_conn->queue_cnts_phys_addr); 773 nomem_queue_cnts_param: 774 kfree(p_conn); 775 776 return -ENOMEM; 777 } 778 779 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 780 struct qed_iscsi_conn *p_in_conn, 781 struct qed_iscsi_conn **p_out_conn) 782 { 783 struct qed_iscsi_conn *p_conn = NULL; 784 int rc = 0; 785 u32 icid; 786 787 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 788 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_TCP_ULP, &icid); 789 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 790 if (rc) 791 return rc; 792 793 /* Use input connection or allocate a new one */ 794 if (p_in_conn) 795 p_conn = p_in_conn; 796 else 797 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 798 799 if (!rc) 800 rc = qed_iscsi_setup_connection(p_conn); 801 802 if (rc) { 803 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 804 qed_cxt_release_cid(p_hwfn, icid); 805 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 806 return rc; 807 } 808 809 p_conn->icid = icid; 810 p_conn->conn_id = (u16)icid; 811 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 812 813 *p_out_conn = p_conn; 814 815 return rc; 816 } 817 818 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 819 struct qed_iscsi_conn *p_conn) 820 { 821 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 822 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 823 qed_cxt_release_cid(p_hwfn, p_conn->icid); 824 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 825 } 826 827 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 828 struct qed_iscsi_conn *p_conn) 829 { 830 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 831 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 832 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 833 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 834 sizeof(struct tcp_upload_params), 835 p_conn->tcp_upload_params_virt_addr, 836 p_conn->tcp_upload_params_phys_addr); 837 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 838 sizeof(struct scsi_terminate_extra_params), 839 p_conn->queue_cnts_virt_addr, 840 p_conn->queue_cnts_phys_addr); 841 kfree(p_conn); 842 } 843 844 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 845 { 846 struct qed_iscsi_info *p_iscsi_info; 847 848 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 849 if (!p_iscsi_info) 850 return -ENOMEM; 851 852 INIT_LIST_HEAD(&p_iscsi_info->free_list); 853 854 p_hwfn->p_iscsi_info = p_iscsi_info; 855 return 0; 856 } 857 858 void qed_iscsi_setup(struct qed_hwfn *p_hwfn) 859 { 860 spin_lock_init(&p_hwfn->p_iscsi_info->lock); 861 } 862 863 void qed_iscsi_free(struct qed_hwfn *p_hwfn) 864 { 865 struct qed_iscsi_conn *p_conn = NULL; 866 867 if (!p_hwfn->p_iscsi_info) 868 return; 869 870 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 871 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 872 struct qed_iscsi_conn, list_entry); 873 if (p_conn) { 874 list_del(&p_conn->list_entry); 875 qed_iscsi_free_connection(p_hwfn, p_conn); 876 } 877 } 878 879 kfree(p_hwfn->p_iscsi_info); 880 p_hwfn->p_iscsi_info = NULL; 881 } 882 883 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 884 struct qed_ptt *p_ptt, 885 struct qed_iscsi_stats *p_stats) 886 { 887 struct tstorm_iscsi_stats_drv tstats; 888 u32 tstats_addr; 889 890 memset(&tstats, 0, sizeof(tstats)); 891 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 892 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 893 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 894 895 p_stats->iscsi_rx_bytes_cnt = 896 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 897 p_stats->iscsi_rx_packet_cnt = 898 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 899 p_stats->iscsi_rx_new_ooo_isle_events_cnt = 900 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt); 901 p_stats->iscsi_cmdq_threshold_cnt = 902 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 903 p_stats->iscsi_rq_threshold_cnt = 904 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 905 p_stats->iscsi_immq_threshold_cnt = 906 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 907 } 908 909 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 910 struct qed_ptt *p_ptt, 911 struct qed_iscsi_stats *p_stats) 912 { 913 struct mstorm_iscsi_stats_drv mstats; 914 u32 mstats_addr; 915 916 memset(&mstats, 0, sizeof(mstats)); 917 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 918 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 919 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 920 921 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 922 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 923 } 924 925 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 926 struct qed_ptt *p_ptt, 927 struct qed_iscsi_stats *p_stats) 928 { 929 struct ustorm_iscsi_stats_drv ustats; 930 u32 ustats_addr; 931 932 memset(&ustats, 0, sizeof(ustats)); 933 ustats_addr = BAR0_MAP_REG_USDM_RAM + 934 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 935 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 936 937 p_stats->iscsi_rx_data_pdu_cnt = 938 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 939 p_stats->iscsi_rx_r2t_pdu_cnt = 940 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 941 p_stats->iscsi_rx_total_pdu_cnt = 942 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 943 } 944 945 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 946 struct qed_ptt *p_ptt, 947 struct qed_iscsi_stats *p_stats) 948 { 949 struct xstorm_iscsi_stats_drv xstats; 950 u32 xstats_addr; 951 952 memset(&xstats, 0, sizeof(xstats)); 953 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 954 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 955 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 956 957 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 958 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 959 p_stats->iscsi_tx_fast_retransmit_event_cnt = 960 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 961 } 962 963 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 964 struct qed_ptt *p_ptt, 965 struct qed_iscsi_stats *p_stats) 966 { 967 struct ystorm_iscsi_stats_drv ystats; 968 u32 ystats_addr; 969 970 memset(&ystats, 0, sizeof(ystats)); 971 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 972 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 973 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 974 975 p_stats->iscsi_tx_data_pdu_cnt = 976 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 977 p_stats->iscsi_tx_r2t_pdu_cnt = 978 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 979 p_stats->iscsi_tx_total_pdu_cnt = 980 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 981 } 982 983 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 984 struct qed_ptt *p_ptt, 985 struct qed_iscsi_stats *p_stats) 986 { 987 struct pstorm_iscsi_stats_drv pstats; 988 u32 pstats_addr; 989 990 memset(&pstats, 0, sizeof(pstats)); 991 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 992 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 993 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 994 995 p_stats->iscsi_tx_bytes_cnt = 996 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 997 p_stats->iscsi_tx_packet_cnt = 998 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 999 } 1000 1001 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 1002 struct qed_iscsi_stats *stats, 1003 bool is_atomic) 1004 { 1005 struct qed_ptt *p_ptt; 1006 1007 memset(stats, 0, sizeof(*stats)); 1008 1009 p_ptt = qed_ptt_acquire_context(p_hwfn, is_atomic); 1010 if (!p_ptt) { 1011 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 1012 return -EAGAIN; 1013 } 1014 1015 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 1016 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 1017 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 1018 1019 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 1020 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 1021 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 1022 1023 qed_ptt_release(p_hwfn, p_ptt); 1024 1025 return 0; 1026 } 1027 1028 struct qed_hash_iscsi_con { 1029 struct hlist_node node; 1030 struct qed_iscsi_conn *con; 1031 }; 1032 1033 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 1034 struct qed_dev_iscsi_info *info) 1035 { 1036 struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev); 1037 1038 int rc; 1039 1040 memset(info, 0, sizeof(*info)); 1041 rc = qed_fill_dev_info(cdev, &info->common); 1042 1043 info->primary_dbq_rq_addr = 1044 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 1045 info->secondary_bdq_rq_addr = 1046 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 1047 1048 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ); 1049 1050 return rc; 1051 } 1052 1053 static void qed_register_iscsi_ops(struct qed_dev *cdev, 1054 struct qed_iscsi_cb_ops *ops, void *cookie) 1055 { 1056 cdev->protocol_ops.iscsi = ops; 1057 cdev->ops_cookie = cookie; 1058 } 1059 1060 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 1061 u32 handle) 1062 { 1063 struct qed_hash_iscsi_con *hash_con = NULL; 1064 1065 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 1066 return NULL; 1067 1068 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 1069 if (hash_con->con->icid == handle) 1070 break; 1071 } 1072 1073 if (!hash_con || (hash_con->con->icid != handle)) 1074 return NULL; 1075 1076 return hash_con; 1077 } 1078 1079 static int qed_iscsi_stop(struct qed_dev *cdev) 1080 { 1081 int rc; 1082 1083 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1084 DP_NOTICE(cdev, "iscsi already stopped\n"); 1085 return 0; 1086 } 1087 1088 if (!hash_empty(cdev->connections)) { 1089 DP_NOTICE(cdev, 1090 "Can't stop iscsi - not all connections were returned\n"); 1091 return -EINVAL; 1092 } 1093 1094 /* Stop the iscsi */ 1095 rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1096 NULL); 1097 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1098 1099 return rc; 1100 } 1101 1102 static int qed_iscsi_start(struct qed_dev *cdev, 1103 struct qed_iscsi_tid *tasks, 1104 void *event_context, 1105 iscsi_event_cb_t async_event_cb) 1106 { 1107 int rc; 1108 struct qed_tid_mem *tid_info; 1109 1110 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1111 DP_NOTICE(cdev, "iscsi already started;\n"); 1112 return 0; 1113 } 1114 1115 rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1116 NULL, event_context, async_event_cb); 1117 if (rc) { 1118 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1119 return rc; 1120 } 1121 1122 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1123 hash_init(cdev->connections); 1124 1125 if (!tasks) 1126 return 0; 1127 1128 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1129 1130 if (!tid_info) { 1131 qed_iscsi_stop(cdev); 1132 return -ENOMEM; 1133 } 1134 1135 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info); 1136 if (rc) { 1137 DP_NOTICE(cdev, "Failed to gather task information\n"); 1138 qed_iscsi_stop(cdev); 1139 kfree(tid_info); 1140 return rc; 1141 } 1142 1143 /* Fill task information */ 1144 tasks->size = tid_info->tid_size; 1145 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1146 memcpy(tasks->blocks, tid_info->blocks, 1147 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1148 1149 kfree(tid_info); 1150 1151 return 0; 1152 } 1153 1154 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1155 u32 *handle, 1156 u32 *fw_cid, void __iomem **p_doorbell) 1157 { 1158 struct qed_hash_iscsi_con *hash_con; 1159 int rc; 1160 1161 /* Allocate a hashed connection */ 1162 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1163 if (!hash_con) 1164 return -ENOMEM; 1165 1166 /* Acquire the connection */ 1167 rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL, 1168 &hash_con->con); 1169 if (rc) { 1170 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1171 kfree(hash_con); 1172 return rc; 1173 } 1174 1175 /* Added the connection to hash table */ 1176 *handle = hash_con->con->icid; 1177 *fw_cid = hash_con->con->fw_cid; 1178 hash_add(cdev->connections, &hash_con->node, *handle); 1179 1180 if (p_doorbell) 1181 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev), 1182 *handle); 1183 1184 return 0; 1185 } 1186 1187 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1188 { 1189 struct qed_hash_iscsi_con *hash_con; 1190 1191 hash_con = qed_iscsi_get_hash(cdev, handle); 1192 if (!hash_con) { 1193 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1194 handle); 1195 return -EINVAL; 1196 } 1197 1198 hlist_del(&hash_con->node); 1199 qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con); 1200 kfree(hash_con); 1201 1202 return 0; 1203 } 1204 1205 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1206 u32 handle, 1207 struct qed_iscsi_params_offload *conn_info) 1208 { 1209 struct qed_hash_iscsi_con *hash_con; 1210 struct qed_iscsi_conn *con; 1211 1212 hash_con = qed_iscsi_get_hash(cdev, handle); 1213 if (!hash_con) { 1214 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1215 handle); 1216 return -EINVAL; 1217 } 1218 1219 /* Update the connection with information from the params */ 1220 con = hash_con->con; 1221 1222 ether_addr_copy(con->local_mac, conn_info->src.mac); 1223 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1224 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1225 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1226 con->local_port = conn_info->src.port; 1227 con->remote_port = conn_info->dst.port; 1228 1229 con->layer_code = conn_info->layer_code; 1230 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1231 con->initial_ack = conn_info->initial_ack; 1232 con->vlan_id = conn_info->vlan_id; 1233 con->tcp_flags = conn_info->tcp_flags; 1234 con->ip_version = conn_info->ip_version; 1235 con->default_cq = conn_info->default_cq; 1236 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1237 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1238 con->rcv_next = conn_info->rcv_next; 1239 con->snd_una = conn_info->snd_una; 1240 con->snd_next = conn_info->snd_next; 1241 con->snd_max = conn_info->snd_max; 1242 con->snd_wnd = conn_info->snd_wnd; 1243 con->rcv_wnd = conn_info->rcv_wnd; 1244 con->snd_wl1 = conn_info->snd_wl1; 1245 con->cwnd = conn_info->cwnd; 1246 con->ss_thresh = conn_info->ss_thresh; 1247 con->srtt = conn_info->srtt; 1248 con->rtt_var = conn_info->rtt_var; 1249 con->ts_recent = conn_info->ts_recent; 1250 con->ts_recent_age = conn_info->ts_recent_age; 1251 con->total_rt = conn_info->total_rt; 1252 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1253 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1254 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1255 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1256 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1257 con->rt_cnt = conn_info->rt_cnt; 1258 con->flow_label = conn_info->flow_label; 1259 con->ka_timeout = conn_info->ka_timeout; 1260 con->ka_interval = conn_info->ka_interval; 1261 con->max_rt_time = conn_info->max_rt_time; 1262 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1263 con->ttl = conn_info->ttl; 1264 con->tos_or_tc = conn_info->tos_or_tc; 1265 con->remote_port = conn_info->remote_port; 1266 con->local_port = conn_info->local_port; 1267 con->mss = conn_info->mss; 1268 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1269 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1270 con->da_timeout_value = conn_info->da_timeout_value; 1271 con->ack_frequency = conn_info->ack_frequency; 1272 1273 /* Set default values on other connection fields */ 1274 con->offl_flags = 0x1; 1275 1276 return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con, 1277 QED_SPQ_MODE_EBLOCK, NULL); 1278 } 1279 1280 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1281 u32 handle, 1282 struct qed_iscsi_params_update *conn_info) 1283 { 1284 struct qed_hash_iscsi_con *hash_con; 1285 struct qed_iscsi_conn *con; 1286 1287 hash_con = qed_iscsi_get_hash(cdev, handle); 1288 if (!hash_con) { 1289 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1290 handle); 1291 return -EINVAL; 1292 } 1293 1294 /* Update the connection with information from the params */ 1295 con = hash_con->con; 1296 con->update_flag = conn_info->update_flag; 1297 con->max_seq_size = conn_info->max_seq_size; 1298 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1299 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1300 con->first_seq_length = conn_info->first_seq_length; 1301 con->exp_stat_sn = conn_info->exp_stat_sn; 1302 1303 return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con, 1304 QED_SPQ_MODE_EBLOCK, NULL); 1305 } 1306 1307 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1308 { 1309 struct qed_hash_iscsi_con *hash_con; 1310 1311 hash_con = qed_iscsi_get_hash(cdev, handle); 1312 if (!hash_con) { 1313 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1314 handle); 1315 return -EINVAL; 1316 } 1317 1318 return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con, 1319 QED_SPQ_MODE_EBLOCK, NULL); 1320 } 1321 1322 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1323 u32 handle, u8 abrt_conn) 1324 { 1325 struct qed_hash_iscsi_con *hash_con; 1326 1327 hash_con = qed_iscsi_get_hash(cdev, handle); 1328 if (!hash_con) { 1329 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1330 handle); 1331 return -EINVAL; 1332 } 1333 1334 hash_con->con->abortive_dsconnect = abrt_conn; 1335 1336 return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con, 1337 QED_SPQ_MODE_EBLOCK, NULL); 1338 } 1339 1340 static int qed_iscsi_stats_context(struct qed_dev *cdev, 1341 struct qed_iscsi_stats *stats, 1342 bool is_atomic) 1343 { 1344 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats, is_atomic); 1345 } 1346 1347 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1348 { 1349 return qed_iscsi_stats_context(cdev, stats, false); 1350 } 1351 1352 static int qed_iscsi_change_mac(struct qed_dev *cdev, 1353 u32 handle, const u8 *mac) 1354 { 1355 struct qed_hash_iscsi_con *hash_con; 1356 1357 hash_con = qed_iscsi_get_hash(cdev, handle); 1358 if (!hash_con) { 1359 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1360 handle); 1361 return -EINVAL; 1362 } 1363 1364 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con, 1365 QED_SPQ_MODE_EBLOCK, NULL); 1366 } 1367 1368 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev, 1369 struct qed_mcp_iscsi_stats *stats, 1370 bool is_atomic) 1371 { 1372 struct qed_iscsi_stats proto_stats; 1373 1374 /* Retrieve FW statistics */ 1375 memset(&proto_stats, 0, sizeof(proto_stats)); 1376 if (qed_iscsi_stats_context(cdev, &proto_stats, is_atomic)) { 1377 DP_VERBOSE(cdev, QED_MSG_STORAGE, 1378 "Failed to collect ISCSI statistics\n"); 1379 return; 1380 } 1381 1382 /* Translate FW statistics into struct */ 1383 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt; 1384 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt; 1385 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt; 1386 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt; 1387 } 1388 1389 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1390 .common = &qed_common_ops_pass, 1391 .ll2 = &qed_ll2_ops_pass, 1392 .fill_dev_info = &qed_fill_iscsi_dev_info, 1393 .register_ops = &qed_register_iscsi_ops, 1394 .start = &qed_iscsi_start, 1395 .stop = &qed_iscsi_stop, 1396 .acquire_conn = &qed_iscsi_acquire_conn, 1397 .release_conn = &qed_iscsi_release_conn, 1398 .offload_conn = &qed_iscsi_offload_conn, 1399 .update_conn = &qed_iscsi_update_conn, 1400 .destroy_conn = &qed_iscsi_destroy_conn, 1401 .clear_sq = &qed_iscsi_clear_conn_sq, 1402 .get_stats = &qed_iscsi_stats, 1403 .change_mac = &qed_iscsi_change_mac, 1404 }; 1405 1406 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1407 { 1408 return &qed_iscsi_ops_pass; 1409 } 1410 EXPORT_SYMBOL(qed_get_iscsi_ops); 1411 1412 void qed_put_iscsi_ops(void) 1413 { 1414 } 1415 EXPORT_SYMBOL(qed_put_iscsi_ops); 1416