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