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_iscsi.h" 33 #include "qed_ll2.h" 34 #include "qed_mcp.h" 35 #include "qed_sp.h" 36 #include "qed_sriov.h" 37 #include "qed_reg_addr.h" 38 39 struct qed_iscsi_conn { 40 struct list_head list_entry; 41 bool free_on_delete; 42 43 u16 conn_id; 44 u32 icid; 45 u32 fw_cid; 46 47 u8 layer_code; 48 u8 offl_flags; 49 u8 connect_mode; 50 u32 initial_ack; 51 dma_addr_t sq_pbl_addr; 52 struct qed_chain r2tq; 53 struct qed_chain xhq; 54 struct qed_chain uhq; 55 56 struct tcp_upload_params *tcp_upload_params_virt_addr; 57 dma_addr_t tcp_upload_params_phys_addr; 58 struct scsi_terminate_extra_params *queue_cnts_virt_addr; 59 dma_addr_t queue_cnts_phys_addr; 60 dma_addr_t syn_phy_addr; 61 62 u16 syn_ip_payload_length; 63 u8 local_mac[6]; 64 u8 remote_mac[6]; 65 u16 vlan_id; 66 u16 tcp_flags; 67 u8 ip_version; 68 u32 remote_ip[4]; 69 u32 local_ip[4]; 70 u8 ka_max_probe_cnt; 71 u8 dup_ack_theshold; 72 u32 rcv_next; 73 u32 snd_una; 74 u32 snd_next; 75 u32 snd_max; 76 u32 snd_wnd; 77 u32 rcv_wnd; 78 u32 snd_wl1; 79 u32 cwnd; 80 u32 ss_thresh; 81 u16 srtt; 82 u16 rtt_var; 83 u32 ts_recent; 84 u32 ts_recent_age; 85 u32 total_rt; 86 u32 ka_timeout_delta; 87 u32 rt_timeout_delta; 88 u8 dup_ack_cnt; 89 u8 snd_wnd_probe_cnt; 90 u8 ka_probe_cnt; 91 u8 rt_cnt; 92 u32 flow_label; 93 u32 ka_timeout; 94 u32 ka_interval; 95 u32 max_rt_time; 96 u32 initial_rcv_wnd; 97 u8 ttl; 98 u8 tos_or_tc; 99 u16 remote_port; 100 u16 local_port; 101 u16 mss; 102 u8 snd_wnd_scale; 103 u8 rcv_wnd_scale; 104 u16 da_timeout_value; 105 u8 ack_frequency; 106 107 u8 update_flag; 108 u8 default_cq; 109 u32 max_seq_size; 110 u32 max_recv_pdu_length; 111 u32 max_send_pdu_length; 112 u32 first_seq_length; 113 u32 exp_stat_sn; 114 u32 stat_sn; 115 u16 physical_q0; 116 u16 physical_q1; 117 u8 abortive_dsconnect; 118 }; 119 120 static int qed_iscsi_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code, 121 __le16 echo, union event_ring_data *data, 122 u8 fw_return_code) 123 { 124 if (p_hwfn->p_iscsi_info->event_cb) { 125 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info; 126 127 return p_iscsi->event_cb(p_iscsi->event_context, 128 fw_event_code, data); 129 } else { 130 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n"); 131 return -EINVAL; 132 } 133 } 134 135 static int 136 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 137 enum spq_mode comp_mode, 138 struct qed_spq_comp_cb *p_comp_addr, 139 void *event_context, iscsi_event_cb_t async_event_cb) 140 { 141 struct iscsi_init_ramrod_params *p_ramrod = NULL; 142 struct scsi_init_func_queues *p_queue = NULL; 143 struct qed_iscsi_pf_params *p_params = NULL; 144 struct iscsi_spe_func_init *p_init = NULL; 145 struct qed_spq_entry *p_ent = NULL; 146 struct qed_sp_init_data init_data; 147 int rc = 0; 148 u32 dval; 149 u16 val; 150 u8 i; 151 152 /* Get SPQ entry */ 153 memset(&init_data, 0, sizeof(init_data)); 154 init_data.cid = qed_spq_get_cid(p_hwfn); 155 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 156 init_data.comp_mode = comp_mode; 157 init_data.p_comp_data = p_comp_addr; 158 159 rc = qed_sp_init_request(p_hwfn, &p_ent, 160 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 161 PROTOCOLID_ISCSI, &init_data); 162 if (rc) 163 return rc; 164 165 p_ramrod = &p_ent->ramrod.iscsi_init; 166 p_init = &p_ramrod->iscsi_init_spe; 167 p_params = &p_hwfn->pf_params.iscsi_pf_params; 168 p_queue = &p_init->q_params; 169 170 /* Sanity */ 171 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) { 172 DP_ERR(p_hwfn, 173 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n", 174 p_params->num_queues, 175 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]); 176 qed_sp_destroy_request(p_hwfn, p_ent); 177 return -EINVAL; 178 } 179 180 val = p_params->half_way_close_timeout; 181 p_init->half_way_close_timeout = cpu_to_le16(val); 182 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 183 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 184 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 185 p_init->ll2_rx_queue_id = 186 p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + 187 p_params->ll2_ooo_queue_id; 188 189 p_init->func_params.log_page_size = p_params->log_page_size; 190 val = p_params->num_tasks; 191 p_init->func_params.num_tasks = cpu_to_le16(val); 192 p_init->debug_mode.flags = p_params->debug_mode; 193 194 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 195 p_params->glbl_q_params_addr); 196 197 val = p_params->cq_num_entries; 198 p_queue->cq_num_entries = cpu_to_le16(val); 199 val = p_params->cmdq_num_entries; 200 p_queue->cmdq_num_entries = cpu_to_le16(val); 201 p_queue->num_queues = p_params->num_queues; 202 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 203 p_queue->queue_relative_offset = (u8)dval; 204 p_queue->cq_sb_pi = p_params->gl_rq_pi; 205 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 206 207 for (i = 0; i < p_params->num_queues; i++) { 208 val = qed_get_igu_sb_id(p_hwfn, i); 209 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 210 } 211 212 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 213 214 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 215 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 216 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 217 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 218 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 219 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 220 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 221 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 222 223 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 224 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 225 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 226 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 227 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 228 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 229 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 230 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 231 val = p_params->rq_buffer_size; 232 p_queue->rq_buffer_size = cpu_to_le16(val); 233 if (p_params->is_target) { 234 SET_FIELD(p_queue->q_validity, 235 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 236 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 237 SET_FIELD(p_queue->q_validity, 238 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 239 SET_FIELD(p_queue->q_validity, 240 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 241 } else { 242 SET_FIELD(p_queue->q_validity, 243 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 244 } 245 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 246 val = p_params->tx_sws_timer; 247 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 248 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt; 249 250 p_hwfn->p_iscsi_info->event_context = event_context; 251 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 252 253 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI, 254 qed_iscsi_async_event); 255 256 return qed_spq_post(p_hwfn, p_ent, NULL); 257 } 258 259 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 260 struct qed_iscsi_conn *p_conn, 261 enum spq_mode comp_mode, 262 struct qed_spq_comp_cb *p_comp_addr) 263 { 264 struct iscsi_spe_conn_offload *p_ramrod = NULL; 265 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 266 struct tcp_offload_params *p_tcp = NULL; 267 struct qed_spq_entry *p_ent = NULL; 268 struct qed_sp_init_data init_data; 269 dma_addr_t r2tq_pbl_addr; 270 dma_addr_t xhq_pbl_addr; 271 dma_addr_t uhq_pbl_addr; 272 u16 physical_q; 273 __le16 tmp; 274 int rc = 0; 275 u32 dval; 276 u16 wval; 277 u16 *p; 278 u8 i; 279 280 /* Get SPQ entry */ 281 memset(&init_data, 0, sizeof(init_data)); 282 init_data.cid = p_conn->icid; 283 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 284 init_data.comp_mode = comp_mode; 285 init_data.p_comp_data = p_comp_addr; 286 287 rc = qed_sp_init_request(p_hwfn, &p_ent, 288 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 289 PROTOCOLID_ISCSI, &init_data); 290 if (rc) 291 return rc; 292 293 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 294 295 /* Transmission PQ is the first of the PF */ 296 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 297 p_conn->physical_q0 = physical_q; 298 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 299 300 /* iSCSI Pure-ACK PQ */ 301 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 302 p_conn->physical_q1 = physical_q; 303 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 304 305 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 306 307 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 308 309 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 310 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 311 312 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 313 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 314 315 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 316 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 317 318 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 319 p_ramrod->iscsi.flags = p_conn->offl_flags; 320 p_ramrod->iscsi.default_cq = p_conn->default_cq; 321 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 322 323 if (!GET_FIELD(p_ramrod->iscsi.flags, 324 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 325 p_tcp = &p_ramrod->tcp; 326 327 p = (u16 *)p_conn->local_mac; 328 tmp = cpu_to_le16(get_unaligned_be16(p)); 329 p_tcp->local_mac_addr_hi = tmp; 330 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 331 p_tcp->local_mac_addr_mid = tmp; 332 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 333 p_tcp->local_mac_addr_lo = tmp; 334 335 p = (u16 *)p_conn->remote_mac; 336 tmp = cpu_to_le16(get_unaligned_be16(p)); 337 p_tcp->remote_mac_addr_hi = tmp; 338 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 339 p_tcp->remote_mac_addr_mid = tmp; 340 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 341 p_tcp->remote_mac_addr_lo = tmp; 342 343 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 344 345 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags); 346 p_tcp->ip_version = p_conn->ip_version; 347 for (i = 0; i < 4; i++) { 348 dval = p_conn->remote_ip[i]; 349 p_tcp->remote_ip[i] = cpu_to_le32(dval); 350 dval = p_conn->local_ip[i]; 351 p_tcp->local_ip[i] = cpu_to_le32(dval); 352 } 353 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 354 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 355 356 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 357 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 358 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 359 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 360 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 361 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 362 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 363 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 364 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 365 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 366 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 367 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 368 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 369 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 370 dval = p_conn->ka_timeout_delta; 371 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 372 dval = p_conn->rt_timeout_delta; 373 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 374 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 375 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 376 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 377 p_tcp->rt_cnt = p_conn->rt_cnt; 378 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 379 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 380 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 381 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 382 dval = p_conn->initial_rcv_wnd; 383 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 384 p_tcp->ttl = p_conn->ttl; 385 p_tcp->tos_or_tc = p_conn->tos_or_tc; 386 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 387 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 388 p_tcp->mss = cpu_to_le16(p_conn->mss); 389 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 390 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 391 wval = p_conn->da_timeout_value; 392 p_tcp->da_timeout_value = cpu_to_le16(wval); 393 p_tcp->ack_frequency = p_conn->ack_frequency; 394 p_tcp->connect_mode = p_conn->connect_mode; 395 } else { 396 p_tcp2 = 397 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 398 399 p = (u16 *)p_conn->local_mac; 400 tmp = cpu_to_le16(get_unaligned_be16(p)); 401 p_tcp2->local_mac_addr_hi = tmp; 402 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 403 p_tcp2->local_mac_addr_mid = tmp; 404 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 405 p_tcp2->local_mac_addr_lo = tmp; 406 407 p = (u16 *)p_conn->remote_mac; 408 tmp = cpu_to_le16(get_unaligned_be16(p)); 409 p_tcp2->remote_mac_addr_hi = tmp; 410 tmp = cpu_to_le16(get_unaligned_be16(p + 1)); 411 p_tcp2->remote_mac_addr_mid = tmp; 412 tmp = cpu_to_le16(get_unaligned_be16(p + 2)); 413 p_tcp2->remote_mac_addr_lo = tmp; 414 415 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 416 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags); 417 418 p_tcp2->ip_version = p_conn->ip_version; 419 for (i = 0; i < 4; i++) { 420 dval = p_conn->remote_ip[i]; 421 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 422 dval = p_conn->local_ip[i]; 423 p_tcp2->local_ip[i] = cpu_to_le32(dval); 424 } 425 426 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 427 p_tcp2->ttl = p_conn->ttl; 428 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 429 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 430 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 431 p_tcp2->mss = cpu_to_le16(p_conn->mss); 432 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 433 p_tcp2->connect_mode = p_conn->connect_mode; 434 wval = p_conn->syn_ip_payload_length; 435 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 436 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 437 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 438 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd); 439 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt; 440 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 441 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 442 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval); 443 } 444 445 return qed_spq_post(p_hwfn, p_ent, NULL); 446 } 447 448 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 449 struct qed_iscsi_conn *p_conn, 450 enum spq_mode comp_mode, 451 struct qed_spq_comp_cb *p_comp_addr) 452 { 453 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 454 struct qed_spq_entry *p_ent = NULL; 455 struct qed_sp_init_data init_data; 456 int rc = -EINVAL; 457 u32 dval; 458 459 /* Get SPQ entry */ 460 memset(&init_data, 0, sizeof(init_data)); 461 init_data.cid = p_conn->icid; 462 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 463 init_data.comp_mode = comp_mode; 464 init_data.p_comp_data = p_comp_addr; 465 466 rc = qed_sp_init_request(p_hwfn, &p_ent, 467 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 468 PROTOCOLID_ISCSI, &init_data); 469 if (rc) 470 return rc; 471 472 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 473 474 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 475 p_ramrod->flags = p_conn->update_flag; 476 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 477 dval = p_conn->max_recv_pdu_length; 478 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 479 dval = p_conn->max_send_pdu_length; 480 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 481 dval = p_conn->first_seq_length; 482 p_ramrod->first_seq_length = cpu_to_le32(dval); 483 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 484 485 return qed_spq_post(p_hwfn, p_ent, NULL); 486 } 487 488 static int 489 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn, 490 struct qed_iscsi_conn *p_conn, 491 enum spq_mode comp_mode, 492 struct qed_spq_comp_cb *p_comp_addr) 493 { 494 struct iscsi_spe_conn_mac_update *p_ramrod = NULL; 495 struct qed_spq_entry *p_ent = NULL; 496 struct qed_sp_init_data init_data; 497 int rc = -EINVAL; 498 u8 ucval; 499 500 /* Get SPQ entry */ 501 memset(&init_data, 0, sizeof(init_data)); 502 init_data.cid = p_conn->icid; 503 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 504 init_data.comp_mode = comp_mode; 505 init_data.p_comp_data = p_comp_addr; 506 507 rc = qed_sp_init_request(p_hwfn, &p_ent, 508 ISCSI_RAMROD_CMD_ID_MAC_UPDATE, 509 PROTOCOLID_ISCSI, &init_data); 510 if (rc) 511 return rc; 512 513 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update; 514 515 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 516 ucval = p_conn->remote_mac[1]; 517 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval; 518 ucval = p_conn->remote_mac[0]; 519 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval; 520 ucval = p_conn->remote_mac[3]; 521 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval; 522 ucval = p_conn->remote_mac[2]; 523 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval; 524 ucval = p_conn->remote_mac[5]; 525 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval; 526 ucval = p_conn->remote_mac[4]; 527 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval; 528 529 return qed_spq_post(p_hwfn, p_ent, NULL); 530 } 531 532 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 533 struct qed_iscsi_conn *p_conn, 534 enum spq_mode comp_mode, 535 struct qed_spq_comp_cb *p_comp_addr) 536 { 537 struct iscsi_spe_conn_termination *p_ramrod = NULL; 538 struct qed_spq_entry *p_ent = NULL; 539 struct qed_sp_init_data init_data; 540 int rc = -EINVAL; 541 542 /* Get SPQ entry */ 543 memset(&init_data, 0, sizeof(init_data)); 544 init_data.cid = p_conn->icid; 545 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 546 init_data.comp_mode = comp_mode; 547 init_data.p_comp_data = p_comp_addr; 548 549 rc = qed_sp_init_request(p_hwfn, &p_ent, 550 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 551 PROTOCOLID_ISCSI, &init_data); 552 if (rc) 553 return rc; 554 555 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 556 557 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 558 p_ramrod->abortive = p_conn->abortive_dsconnect; 559 560 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 561 p_conn->tcp_upload_params_phys_addr); 562 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 563 564 return qed_spq_post(p_hwfn, p_ent, NULL); 565 } 566 567 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 568 struct qed_iscsi_conn *p_conn, 569 enum spq_mode comp_mode, 570 struct qed_spq_comp_cb *p_comp_addr) 571 { 572 struct qed_spq_entry *p_ent = NULL; 573 struct qed_sp_init_data init_data; 574 int rc = -EINVAL; 575 576 /* Get SPQ entry */ 577 memset(&init_data, 0, sizeof(init_data)); 578 init_data.cid = p_conn->icid; 579 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 580 init_data.comp_mode = comp_mode; 581 init_data.p_comp_data = p_comp_addr; 582 583 rc = qed_sp_init_request(p_hwfn, &p_ent, 584 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 585 PROTOCOLID_ISCSI, &init_data); 586 if (rc) 587 return rc; 588 589 return qed_spq_post(p_hwfn, p_ent, NULL); 590 } 591 592 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 593 enum spq_mode comp_mode, 594 struct qed_spq_comp_cb *p_comp_addr) 595 { 596 struct qed_spq_entry *p_ent = NULL; 597 struct qed_sp_init_data init_data; 598 int rc = 0; 599 600 /* Get SPQ entry */ 601 memset(&init_data, 0, sizeof(init_data)); 602 init_data.cid = qed_spq_get_cid(p_hwfn); 603 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 604 init_data.comp_mode = comp_mode; 605 init_data.p_comp_data = p_comp_addr; 606 607 rc = qed_sp_init_request(p_hwfn, &p_ent, 608 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 609 PROTOCOLID_ISCSI, &init_data); 610 if (rc) 611 return rc; 612 613 rc = qed_spq_post(p_hwfn, p_ent, NULL); 614 615 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI); 616 return rc; 617 } 618 619 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 620 { 621 return (u8 __iomem *)p_hwfn->doorbells + 622 qed_db_addr(cid, DQ_DEMS_LEGACY); 623 } 624 625 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 626 u8 bdq_id) 627 { 628 if (RESC_NUM(p_hwfn, QED_BDQ)) { 629 return (u8 __iomem *)p_hwfn->regview + 630 GTT_BAR0_MAP_REG_MSDM_RAM + 631 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 632 QED_BDQ), 633 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 GTT_BAR0_MAP_REG_TSDM_RAM + 646 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 647 QED_BDQ), 648 bdq_id); 649 } else { 650 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 651 return NULL; 652 } 653 } 654 655 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn) 656 { 657 if (!p_conn->queue_cnts_virt_addr) 658 goto nomem; 659 memset(p_conn->queue_cnts_virt_addr, 0, 660 sizeof(*p_conn->queue_cnts_virt_addr)); 661 662 if (!p_conn->tcp_upload_params_virt_addr) 663 goto nomem; 664 memset(p_conn->tcp_upload_params_virt_addr, 0, 665 sizeof(*p_conn->tcp_upload_params_virt_addr)); 666 667 if (!p_conn->r2tq.p_virt_addr) 668 goto nomem; 669 qed_chain_pbl_zero_mem(&p_conn->r2tq); 670 671 if (!p_conn->uhq.p_virt_addr) 672 goto nomem; 673 qed_chain_pbl_zero_mem(&p_conn->uhq); 674 675 if (!p_conn->xhq.p_virt_addr) 676 goto nomem; 677 qed_chain_pbl_zero_mem(&p_conn->xhq); 678 679 return 0; 680 nomem: 681 return -ENOMEM; 682 } 683 684 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 685 struct qed_iscsi_conn **p_out_conn) 686 { 687 struct scsi_terminate_extra_params *p_q_cnts = NULL; 688 struct qed_iscsi_pf_params *p_params = NULL; 689 struct qed_chain_init_params params = { 690 .mode = QED_CHAIN_MODE_PBL, 691 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 692 .cnt_type = QED_CHAIN_CNT_TYPE_U16, 693 }; 694 struct tcp_upload_params *p_tcp = NULL; 695 struct qed_iscsi_conn *p_conn = NULL; 696 int rc = 0; 697 698 /* Try finding a free connection that can be used */ 699 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 700 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 701 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 702 struct qed_iscsi_conn, list_entry); 703 if (p_conn) { 704 list_del(&p_conn->list_entry); 705 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 706 *p_out_conn = p_conn; 707 return 0; 708 } 709 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 710 711 /* Need to allocate a new connection */ 712 p_params = &p_hwfn->pf_params.iscsi_pf_params; 713 714 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 715 if (!p_conn) 716 return -ENOMEM; 717 718 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 719 sizeof(*p_q_cnts), 720 &p_conn->queue_cnts_phys_addr, 721 GFP_KERNEL); 722 if (!p_q_cnts) 723 goto nomem_queue_cnts_param; 724 p_conn->queue_cnts_virt_addr = p_q_cnts; 725 726 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 727 sizeof(*p_tcp), 728 &p_conn->tcp_upload_params_phys_addr, 729 GFP_KERNEL); 730 if (!p_tcp) 731 goto nomem_upload_param; 732 p_conn->tcp_upload_params_virt_addr = p_tcp; 733 734 params.num_elems = p_params->num_r2tq_pages_in_ring * 735 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_wqe); 736 params.elem_size = sizeof(struct iscsi_wqe); 737 738 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->r2tq, ¶ms); 739 if (rc) 740 goto nomem_r2tq; 741 742 params.num_elems = p_params->num_uhq_pages_in_ring * 743 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 744 params.elem_size = sizeof(struct iscsi_uhqe); 745 746 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->uhq, ¶ms); 747 if (rc) 748 goto nomem_uhq; 749 750 params.elem_size = sizeof(struct iscsi_xhqe); 751 752 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->xhq, ¶ms); 753 if (rc) 754 goto nomem; 755 756 p_conn->free_on_delete = true; 757 *p_out_conn = p_conn; 758 return 0; 759 760 nomem: 761 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 762 nomem_uhq: 763 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 764 nomem_r2tq: 765 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 766 sizeof(struct tcp_upload_params), 767 p_conn->tcp_upload_params_virt_addr, 768 p_conn->tcp_upload_params_phys_addr); 769 nomem_upload_param: 770 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 771 sizeof(struct scsi_terminate_extra_params), 772 p_conn->queue_cnts_virt_addr, 773 p_conn->queue_cnts_phys_addr); 774 nomem_queue_cnts_param: 775 kfree(p_conn); 776 777 return -ENOMEM; 778 } 779 780 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 781 struct qed_iscsi_conn *p_in_conn, 782 struct qed_iscsi_conn **p_out_conn) 783 { 784 struct qed_iscsi_conn *p_conn = NULL; 785 int rc = 0; 786 u32 icid; 787 788 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 789 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 790 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 791 if (rc) 792 return rc; 793 794 /* Use input connection or allocate a new one */ 795 if (p_in_conn) 796 p_conn = p_in_conn; 797 else 798 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 799 800 if (!rc) 801 rc = qed_iscsi_setup_connection(p_conn); 802 803 if (rc) { 804 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 805 qed_cxt_release_cid(p_hwfn, icid); 806 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 807 return rc; 808 } 809 810 p_conn->icid = icid; 811 p_conn->conn_id = (u16)icid; 812 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 813 814 *p_out_conn = p_conn; 815 816 return rc; 817 } 818 819 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 820 struct qed_iscsi_conn *p_conn) 821 { 822 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 823 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 824 qed_cxt_release_cid(p_hwfn, p_conn->icid); 825 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 826 } 827 828 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 829 struct qed_iscsi_conn *p_conn) 830 { 831 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 832 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 833 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 834 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 835 sizeof(struct tcp_upload_params), 836 p_conn->tcp_upload_params_virt_addr, 837 p_conn->tcp_upload_params_phys_addr); 838 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 839 sizeof(struct scsi_terminate_extra_params), 840 p_conn->queue_cnts_virt_addr, 841 p_conn->queue_cnts_phys_addr); 842 kfree(p_conn); 843 } 844 845 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 846 { 847 struct qed_iscsi_info *p_iscsi_info; 848 849 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 850 if (!p_iscsi_info) 851 return -ENOMEM; 852 853 INIT_LIST_HEAD(&p_iscsi_info->free_list); 854 855 p_hwfn->p_iscsi_info = p_iscsi_info; 856 return 0; 857 } 858 859 void qed_iscsi_setup(struct qed_hwfn *p_hwfn) 860 { 861 spin_lock_init(&p_hwfn->p_iscsi_info->lock); 862 } 863 864 void qed_iscsi_free(struct qed_hwfn *p_hwfn) 865 { 866 struct qed_iscsi_conn *p_conn = NULL; 867 868 if (!p_hwfn->p_iscsi_info) 869 return; 870 871 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 872 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 873 struct qed_iscsi_conn, list_entry); 874 if (p_conn) { 875 list_del(&p_conn->list_entry); 876 qed_iscsi_free_connection(p_hwfn, p_conn); 877 } 878 } 879 880 kfree(p_hwfn->p_iscsi_info); 881 p_hwfn->p_iscsi_info = NULL; 882 } 883 884 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 885 struct qed_ptt *p_ptt, 886 struct qed_iscsi_stats *p_stats) 887 { 888 struct tstorm_iscsi_stats_drv tstats; 889 u32 tstats_addr; 890 891 memset(&tstats, 0, sizeof(tstats)); 892 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 893 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 894 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 895 896 p_stats->iscsi_rx_bytes_cnt = 897 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 898 p_stats->iscsi_rx_packet_cnt = 899 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 900 p_stats->iscsi_rx_new_ooo_isle_events_cnt = 901 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt); 902 p_stats->iscsi_cmdq_threshold_cnt = 903 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 904 p_stats->iscsi_rq_threshold_cnt = 905 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 906 p_stats->iscsi_immq_threshold_cnt = 907 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 908 } 909 910 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 911 struct qed_ptt *p_ptt, 912 struct qed_iscsi_stats *p_stats) 913 { 914 struct mstorm_iscsi_stats_drv mstats; 915 u32 mstats_addr; 916 917 memset(&mstats, 0, sizeof(mstats)); 918 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 919 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 920 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 921 922 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 923 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 924 } 925 926 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 927 struct qed_ptt *p_ptt, 928 struct qed_iscsi_stats *p_stats) 929 { 930 struct ustorm_iscsi_stats_drv ustats; 931 u32 ustats_addr; 932 933 memset(&ustats, 0, sizeof(ustats)); 934 ustats_addr = BAR0_MAP_REG_USDM_RAM + 935 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 936 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 937 938 p_stats->iscsi_rx_data_pdu_cnt = 939 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 940 p_stats->iscsi_rx_r2t_pdu_cnt = 941 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 942 p_stats->iscsi_rx_total_pdu_cnt = 943 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 944 } 945 946 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 947 struct qed_ptt *p_ptt, 948 struct qed_iscsi_stats *p_stats) 949 { 950 struct xstorm_iscsi_stats_drv xstats; 951 u32 xstats_addr; 952 953 memset(&xstats, 0, sizeof(xstats)); 954 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 955 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 956 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 957 958 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 959 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 960 p_stats->iscsi_tx_fast_retransmit_event_cnt = 961 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 962 } 963 964 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 965 struct qed_ptt *p_ptt, 966 struct qed_iscsi_stats *p_stats) 967 { 968 struct ystorm_iscsi_stats_drv ystats; 969 u32 ystats_addr; 970 971 memset(&ystats, 0, sizeof(ystats)); 972 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 973 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 974 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 975 976 p_stats->iscsi_tx_data_pdu_cnt = 977 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 978 p_stats->iscsi_tx_r2t_pdu_cnt = 979 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 980 p_stats->iscsi_tx_total_pdu_cnt = 981 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 982 } 983 984 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 985 struct qed_ptt *p_ptt, 986 struct qed_iscsi_stats *p_stats) 987 { 988 struct pstorm_iscsi_stats_drv pstats; 989 u32 pstats_addr; 990 991 memset(&pstats, 0, sizeof(pstats)); 992 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 993 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 994 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 995 996 p_stats->iscsi_tx_bytes_cnt = 997 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 998 p_stats->iscsi_tx_packet_cnt = 999 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 1000 } 1001 1002 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 1003 struct qed_iscsi_stats *stats) 1004 { 1005 struct qed_ptt *p_ptt; 1006 1007 memset(stats, 0, sizeof(*stats)); 1008 1009 p_ptt = qed_ptt_acquire(p_hwfn); 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(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1341 { 1342 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats); 1343 } 1344 1345 static int qed_iscsi_change_mac(struct qed_dev *cdev, 1346 u32 handle, const u8 *mac) 1347 { 1348 struct qed_hash_iscsi_con *hash_con; 1349 1350 hash_con = qed_iscsi_get_hash(cdev, handle); 1351 if (!hash_con) { 1352 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1353 handle); 1354 return -EINVAL; 1355 } 1356 1357 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con, 1358 QED_SPQ_MODE_EBLOCK, NULL); 1359 } 1360 1361 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev, 1362 struct qed_mcp_iscsi_stats *stats) 1363 { 1364 struct qed_iscsi_stats proto_stats; 1365 1366 /* Retrieve FW statistics */ 1367 memset(&proto_stats, 0, sizeof(proto_stats)); 1368 if (qed_iscsi_stats(cdev, &proto_stats)) { 1369 DP_VERBOSE(cdev, QED_MSG_STORAGE, 1370 "Failed to collect ISCSI statistics\n"); 1371 return; 1372 } 1373 1374 /* Translate FW statistics into struct */ 1375 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt; 1376 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt; 1377 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt; 1378 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt; 1379 } 1380 1381 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1382 .common = &qed_common_ops_pass, 1383 .ll2 = &qed_ll2_ops_pass, 1384 .fill_dev_info = &qed_fill_iscsi_dev_info, 1385 .register_ops = &qed_register_iscsi_ops, 1386 .start = &qed_iscsi_start, 1387 .stop = &qed_iscsi_stop, 1388 .acquire_conn = &qed_iscsi_acquire_conn, 1389 .release_conn = &qed_iscsi_release_conn, 1390 .offload_conn = &qed_iscsi_offload_conn, 1391 .update_conn = &qed_iscsi_update_conn, 1392 .destroy_conn = &qed_iscsi_destroy_conn, 1393 .clear_sq = &qed_iscsi_clear_conn_sq, 1394 .get_stats = &qed_iscsi_stats, 1395 .change_mac = &qed_iscsi_change_mac, 1396 }; 1397 1398 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1399 { 1400 return &qed_iscsi_ops_pass; 1401 } 1402 EXPORT_SYMBOL(qed_get_iscsi_ops); 1403 1404 void qed_put_iscsi_ops(void) 1405 { 1406 } 1407 EXPORT_SYMBOL(qed_put_iscsi_ops); 1408