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