1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/types.h> 34 #include <asm/byteorder.h> 35 #include <asm/param.h> 36 #include <linux/delay.h> 37 #include <linux/dma-mapping.h> 38 #include <linux/etherdevice.h> 39 #include <linux/interrupt.h> 40 #include <linux/kernel.h> 41 #include <linux/log2.h> 42 #include <linux/module.h> 43 #include <linux/pci.h> 44 #include <linux/slab.h> 45 #include <linux/stddef.h> 46 #include <linux/string.h> 47 #include <linux/workqueue.h> 48 #include <linux/errno.h> 49 #include <linux/list.h> 50 #include <linux/spinlock.h> 51 #include <linux/qed/qed_iscsi_if.h> 52 #include "qed.h" 53 #include "qed_cxt.h" 54 #include "qed_dev_api.h" 55 #include "qed_hsi.h" 56 #include "qed_hw.h" 57 #include "qed_int.h" 58 #include "qed_iscsi.h" 59 #include "qed_ll2.h" 60 #include "qed_mcp.h" 61 #include "qed_sp.h" 62 #include "qed_sriov.h" 63 #include "qed_reg_addr.h" 64 65 struct qed_iscsi_conn { 66 struct list_head list_entry; 67 bool free_on_delete; 68 69 u16 conn_id; 70 u32 icid; 71 u32 fw_cid; 72 73 u8 layer_code; 74 u8 offl_flags; 75 u8 connect_mode; 76 u32 initial_ack; 77 dma_addr_t sq_pbl_addr; 78 struct qed_chain r2tq; 79 struct qed_chain xhq; 80 struct qed_chain uhq; 81 82 struct tcp_upload_params *tcp_upload_params_virt_addr; 83 dma_addr_t tcp_upload_params_phys_addr; 84 struct scsi_terminate_extra_params *queue_cnts_virt_addr; 85 dma_addr_t queue_cnts_phys_addr; 86 dma_addr_t syn_phy_addr; 87 88 u16 syn_ip_payload_length; 89 u8 local_mac[6]; 90 u8 remote_mac[6]; 91 u16 vlan_id; 92 u16 tcp_flags; 93 u8 ip_version; 94 u32 remote_ip[4]; 95 u32 local_ip[4]; 96 u8 ka_max_probe_cnt; 97 u8 dup_ack_theshold; 98 u32 rcv_next; 99 u32 snd_una; 100 u32 snd_next; 101 u32 snd_max; 102 u32 snd_wnd; 103 u32 rcv_wnd; 104 u32 snd_wl1; 105 u32 cwnd; 106 u32 ss_thresh; 107 u16 srtt; 108 u16 rtt_var; 109 u32 ts_recent; 110 u32 ts_recent_age; 111 u32 total_rt; 112 u32 ka_timeout_delta; 113 u32 rt_timeout_delta; 114 u8 dup_ack_cnt; 115 u8 snd_wnd_probe_cnt; 116 u8 ka_probe_cnt; 117 u8 rt_cnt; 118 u32 flow_label; 119 u32 ka_timeout; 120 u32 ka_interval; 121 u32 max_rt_time; 122 u32 initial_rcv_wnd; 123 u8 ttl; 124 u8 tos_or_tc; 125 u16 remote_port; 126 u16 local_port; 127 u16 mss; 128 u8 snd_wnd_scale; 129 u8 rcv_wnd_scale; 130 u16 da_timeout_value; 131 u8 ack_frequency; 132 133 u8 update_flag; 134 u8 default_cq; 135 u32 max_seq_size; 136 u32 max_recv_pdu_length; 137 u32 max_send_pdu_length; 138 u32 first_seq_length; 139 u32 exp_stat_sn; 140 u32 stat_sn; 141 u16 physical_q0; 142 u16 physical_q1; 143 u8 abortive_dsconnect; 144 }; 145 146 static int 147 qed_iscsi_async_event(struct qed_hwfn *p_hwfn, 148 u8 fw_event_code, 149 u16 echo, union event_ring_data *data, u8 fw_return_code) 150 { 151 if (p_hwfn->p_iscsi_info->event_cb) { 152 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info; 153 154 return p_iscsi->event_cb(p_iscsi->event_context, 155 fw_event_code, data); 156 } else { 157 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n"); 158 return -EINVAL; 159 } 160 } 161 162 static int 163 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 164 enum spq_mode comp_mode, 165 struct qed_spq_comp_cb *p_comp_addr, 166 void *event_context, iscsi_event_cb_t async_event_cb) 167 { 168 struct iscsi_init_ramrod_params *p_ramrod = NULL; 169 struct scsi_init_func_queues *p_queue = NULL; 170 struct qed_iscsi_pf_params *p_params = NULL; 171 struct iscsi_spe_func_init *p_init = NULL; 172 struct qed_spq_entry *p_ent = NULL; 173 struct qed_sp_init_data init_data; 174 int rc = 0; 175 u32 dval; 176 u16 val; 177 u8 i; 178 179 /* Get SPQ entry */ 180 memset(&init_data, 0, sizeof(init_data)); 181 init_data.cid = qed_spq_get_cid(p_hwfn); 182 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 183 init_data.comp_mode = comp_mode; 184 init_data.p_comp_data = p_comp_addr; 185 186 rc = qed_sp_init_request(p_hwfn, &p_ent, 187 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 188 PROTOCOLID_ISCSI, &init_data); 189 if (rc) 190 return rc; 191 192 p_ramrod = &p_ent->ramrod.iscsi_init; 193 p_init = &p_ramrod->iscsi_init_spe; 194 p_params = &p_hwfn->pf_params.iscsi_pf_params; 195 p_queue = &p_init->q_params; 196 197 /* Sanity */ 198 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) { 199 DP_ERR(p_hwfn, 200 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n", 201 p_params->num_queues, 202 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]); 203 return -EINVAL; 204 } 205 206 SET_FIELD(p_init->hdr.flags, 207 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); 208 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; 209 210 val = p_params->half_way_close_timeout; 211 p_init->half_way_close_timeout = cpu_to_le16(val); 212 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 213 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 214 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 215 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + 216 p_params->ll2_ooo_queue_id; 217 218 p_init->func_params.log_page_size = p_params->log_page_size; 219 val = p_params->num_tasks; 220 p_init->func_params.num_tasks = cpu_to_le16(val); 221 p_init->debug_mode.flags = p_params->debug_mode; 222 223 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 224 p_params->glbl_q_params_addr); 225 226 val = p_params->cq_num_entries; 227 p_queue->cq_num_entries = cpu_to_le16(val); 228 val = p_params->cmdq_num_entries; 229 p_queue->cmdq_num_entries = cpu_to_le16(val); 230 p_queue->num_queues = p_params->num_queues; 231 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 232 p_queue->queue_relative_offset = (u8)dval; 233 p_queue->cq_sb_pi = p_params->gl_rq_pi; 234 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 235 236 for (i = 0; i < p_params->num_queues; i++) { 237 val = qed_get_igu_sb_id(p_hwfn, i); 238 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 239 } 240 241 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 242 243 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 244 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 245 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 246 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 247 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 248 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 249 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 250 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 251 252 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 253 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 254 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 255 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 256 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 257 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 258 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 259 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 260 val = p_params->rq_buffer_size; 261 p_queue->rq_buffer_size = cpu_to_le16(val); 262 if (p_params->is_target) { 263 SET_FIELD(p_queue->q_validity, 264 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 265 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 266 SET_FIELD(p_queue->q_validity, 267 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 268 SET_FIELD(p_queue->q_validity, 269 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 270 } else { 271 SET_FIELD(p_queue->q_validity, 272 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 273 } 274 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 275 val = p_params->tx_sws_timer; 276 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 277 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt; 278 279 p_hwfn->p_iscsi_info->event_context = event_context; 280 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 281 282 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI, 283 qed_iscsi_async_event); 284 285 return qed_spq_post(p_hwfn, p_ent, NULL); 286 } 287 288 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 289 struct qed_iscsi_conn *p_conn, 290 enum spq_mode comp_mode, 291 struct qed_spq_comp_cb *p_comp_addr) 292 { 293 struct iscsi_spe_conn_offload *p_ramrod = NULL; 294 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 295 struct tcp_offload_params *p_tcp = NULL; 296 struct qed_spq_entry *p_ent = NULL; 297 struct qed_sp_init_data init_data; 298 dma_addr_t r2tq_pbl_addr; 299 dma_addr_t xhq_pbl_addr; 300 dma_addr_t uhq_pbl_addr; 301 u16 physical_q; 302 int rc = 0; 303 u32 dval; 304 u16 wval; 305 u16 *p; 306 u8 i; 307 308 /* Get SPQ entry */ 309 memset(&init_data, 0, sizeof(init_data)); 310 init_data.cid = p_conn->icid; 311 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 312 init_data.comp_mode = comp_mode; 313 init_data.p_comp_data = p_comp_addr; 314 315 rc = qed_sp_init_request(p_hwfn, &p_ent, 316 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 317 PROTOCOLID_ISCSI, &init_data); 318 if (rc) 319 return rc; 320 321 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 322 323 /* Transmission PQ is the first of the PF */ 324 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 325 p_conn->physical_q0 = cpu_to_le16(physical_q); 326 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 327 328 /* iSCSI Pure-ACK PQ */ 329 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 330 p_conn->physical_q1 = cpu_to_le16(physical_q); 331 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 332 333 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; 334 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, 335 p_conn->layer_code); 336 337 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 338 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 339 340 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 341 342 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 343 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 344 345 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 346 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 347 348 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 349 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 350 351 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 352 p_ramrod->iscsi.flags = p_conn->offl_flags; 353 p_ramrod->iscsi.default_cq = p_conn->default_cq; 354 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 355 356 if (!GET_FIELD(p_ramrod->iscsi.flags, 357 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 358 p_tcp = &p_ramrod->tcp; 359 360 p = (u16 *)p_conn->local_mac; 361 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 362 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 363 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 364 365 p = (u16 *)p_conn->remote_mac; 366 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 367 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 368 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 369 370 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 371 372 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags); 373 p_tcp->ip_version = p_conn->ip_version; 374 for (i = 0; i < 4; i++) { 375 dval = p_conn->remote_ip[i]; 376 p_tcp->remote_ip[i] = cpu_to_le32(dval); 377 dval = p_conn->local_ip[i]; 378 p_tcp->local_ip[i] = cpu_to_le32(dval); 379 } 380 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 381 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 382 383 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 384 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 385 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 386 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 387 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 388 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 389 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 390 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 391 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 392 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 393 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 394 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 395 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 396 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 397 dval = p_conn->ka_timeout_delta; 398 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 399 dval = p_conn->rt_timeout_delta; 400 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 401 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 402 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 403 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 404 p_tcp->rt_cnt = p_conn->rt_cnt; 405 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 406 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 407 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 408 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 409 dval = p_conn->initial_rcv_wnd; 410 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 411 p_tcp->ttl = p_conn->ttl; 412 p_tcp->tos_or_tc = p_conn->tos_or_tc; 413 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 414 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 415 p_tcp->mss = cpu_to_le16(p_conn->mss); 416 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 417 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 418 wval = p_conn->da_timeout_value; 419 p_tcp->da_timeout_value = cpu_to_le16(wval); 420 p_tcp->ack_frequency = p_conn->ack_frequency; 421 p_tcp->connect_mode = p_conn->connect_mode; 422 } else { 423 p_tcp2 = 424 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 425 426 p = (u16 *)p_conn->local_mac; 427 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 428 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 429 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 430 431 p = (u16 *)p_conn->remote_mac; 432 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 433 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 434 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 435 436 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 437 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags); 438 439 p_tcp2->ip_version = p_conn->ip_version; 440 for (i = 0; i < 4; i++) { 441 dval = p_conn->remote_ip[i]; 442 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 443 dval = p_conn->local_ip[i]; 444 p_tcp2->local_ip[i] = cpu_to_le32(dval); 445 } 446 447 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 448 p_tcp2->ttl = p_conn->ttl; 449 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 450 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 451 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 452 p_tcp2->mss = cpu_to_le16(p_conn->mss); 453 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 454 p_tcp2->connect_mode = p_conn->connect_mode; 455 wval = p_conn->syn_ip_payload_length; 456 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 457 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 458 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 459 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd); 460 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt; 461 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 462 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 463 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval); 464 } 465 466 return qed_spq_post(p_hwfn, p_ent, NULL); 467 } 468 469 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 470 struct qed_iscsi_conn *p_conn, 471 enum spq_mode comp_mode, 472 struct qed_spq_comp_cb *p_comp_addr) 473 { 474 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 475 struct qed_spq_entry *p_ent = NULL; 476 struct qed_sp_init_data init_data; 477 int rc = -EINVAL; 478 u32 dval; 479 480 /* Get SPQ entry */ 481 memset(&init_data, 0, sizeof(init_data)); 482 init_data.cid = p_conn->icid; 483 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 484 init_data.comp_mode = comp_mode; 485 init_data.p_comp_data = p_comp_addr; 486 487 rc = qed_sp_init_request(p_hwfn, &p_ent, 488 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 489 PROTOCOLID_ISCSI, &init_data); 490 if (rc) 491 return rc; 492 493 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 494 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; 495 SET_FIELD(p_ramrod->hdr.flags, 496 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 497 498 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 499 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 500 p_ramrod->flags = p_conn->update_flag; 501 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 502 dval = p_conn->max_recv_pdu_length; 503 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 504 dval = p_conn->max_send_pdu_length; 505 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 506 dval = p_conn->first_seq_length; 507 p_ramrod->first_seq_length = cpu_to_le32(dval); 508 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 509 510 return qed_spq_post(p_hwfn, p_ent, NULL); 511 } 512 513 static int 514 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn, 515 struct qed_iscsi_conn *p_conn, 516 enum spq_mode comp_mode, 517 struct qed_spq_comp_cb *p_comp_addr) 518 { 519 struct iscsi_spe_conn_mac_update *p_ramrod = NULL; 520 struct qed_spq_entry *p_ent = NULL; 521 struct qed_sp_init_data init_data; 522 int rc = -EINVAL; 523 u8 ucval; 524 525 /* Get SPQ entry */ 526 memset(&init_data, 0, sizeof(init_data)); 527 init_data.cid = p_conn->icid; 528 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 529 init_data.comp_mode = comp_mode; 530 init_data.p_comp_data = p_comp_addr; 531 532 rc = qed_sp_init_request(p_hwfn, &p_ent, 533 ISCSI_RAMROD_CMD_ID_MAC_UPDATE, 534 PROTOCOLID_ISCSI, &init_data); 535 if (rc) 536 return rc; 537 538 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update; 539 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE; 540 SET_FIELD(p_ramrod->hdr.flags, 541 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 542 543 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 544 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 545 ucval = p_conn->remote_mac[1]; 546 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval; 547 ucval = p_conn->remote_mac[0]; 548 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval; 549 ucval = p_conn->remote_mac[3]; 550 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval; 551 ucval = p_conn->remote_mac[2]; 552 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval; 553 ucval = p_conn->remote_mac[5]; 554 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval; 555 ucval = p_conn->remote_mac[4]; 556 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval; 557 558 return qed_spq_post(p_hwfn, p_ent, NULL); 559 } 560 561 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 562 struct qed_iscsi_conn *p_conn, 563 enum spq_mode comp_mode, 564 struct qed_spq_comp_cb *p_comp_addr) 565 { 566 struct iscsi_spe_conn_termination *p_ramrod = NULL; 567 struct qed_spq_entry *p_ent = NULL; 568 struct qed_sp_init_data init_data; 569 int rc = -EINVAL; 570 571 /* Get SPQ entry */ 572 memset(&init_data, 0, sizeof(init_data)); 573 init_data.cid = p_conn->icid; 574 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 575 init_data.comp_mode = comp_mode; 576 init_data.p_comp_data = p_comp_addr; 577 578 rc = qed_sp_init_request(p_hwfn, &p_ent, 579 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 580 PROTOCOLID_ISCSI, &init_data); 581 if (rc) 582 return rc; 583 584 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 585 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; 586 SET_FIELD(p_ramrod->hdr.flags, 587 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 588 589 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 590 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 591 p_ramrod->abortive = p_conn->abortive_dsconnect; 592 593 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 594 p_conn->tcp_upload_params_phys_addr); 595 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 596 597 return qed_spq_post(p_hwfn, p_ent, NULL); 598 } 599 600 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 601 struct qed_iscsi_conn *p_conn, 602 enum spq_mode comp_mode, 603 struct qed_spq_comp_cb *p_comp_addr) 604 { 605 struct iscsi_slow_path_hdr *p_ramrod = NULL; 606 struct qed_spq_entry *p_ent = NULL; 607 struct qed_sp_init_data init_data; 608 int rc = -EINVAL; 609 610 /* Get SPQ entry */ 611 memset(&init_data, 0, sizeof(init_data)); 612 init_data.cid = p_conn->icid; 613 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 614 init_data.comp_mode = comp_mode; 615 init_data.p_comp_data = p_comp_addr; 616 617 rc = qed_sp_init_request(p_hwfn, &p_ent, 618 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 619 PROTOCOLID_ISCSI, &init_data); 620 if (rc) 621 return rc; 622 623 p_ramrod = &p_ent->ramrod.iscsi_empty; 624 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; 625 SET_FIELD(p_ramrod->flags, 626 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 627 628 return qed_spq_post(p_hwfn, p_ent, NULL); 629 } 630 631 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 632 enum spq_mode comp_mode, 633 struct qed_spq_comp_cb *p_comp_addr) 634 { 635 struct iscsi_spe_func_dstry *p_ramrod = NULL; 636 struct qed_spq_entry *p_ent = NULL; 637 struct qed_sp_init_data init_data; 638 int rc = 0; 639 640 /* Get SPQ entry */ 641 memset(&init_data, 0, sizeof(init_data)); 642 init_data.cid = qed_spq_get_cid(p_hwfn); 643 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 644 init_data.comp_mode = comp_mode; 645 init_data.p_comp_data = p_comp_addr; 646 647 rc = qed_sp_init_request(p_hwfn, &p_ent, 648 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 649 PROTOCOLID_ISCSI, &init_data); 650 if (rc) 651 return rc; 652 653 p_ramrod = &p_ent->ramrod.iscsi_destroy; 654 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; 655 656 rc = qed_spq_post(p_hwfn, p_ent, NULL); 657 658 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI); 659 return rc; 660 } 661 662 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 663 { 664 return (u8 __iomem *)p_hwfn->doorbells + 665 qed_db_addr(cid, DQ_DEMS_LEGACY); 666 } 667 668 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 669 u8 bdq_id) 670 { 671 if (RESC_NUM(p_hwfn, QED_BDQ)) { 672 return (u8 __iomem *)p_hwfn->regview + 673 GTT_BAR0_MAP_REG_MSDM_RAM + 674 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 675 QED_BDQ), 676 bdq_id); 677 } else { 678 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 679 return NULL; 680 } 681 } 682 683 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 684 u8 bdq_id) 685 { 686 if (RESC_NUM(p_hwfn, QED_BDQ)) { 687 return (u8 __iomem *)p_hwfn->regview + 688 GTT_BAR0_MAP_REG_TSDM_RAM + 689 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 690 QED_BDQ), 691 bdq_id); 692 } else { 693 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 694 return NULL; 695 } 696 } 697 698 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn) 699 { 700 if (!p_conn->queue_cnts_virt_addr) 701 goto nomem; 702 memset(p_conn->queue_cnts_virt_addr, 0, 703 sizeof(*p_conn->queue_cnts_virt_addr)); 704 705 if (!p_conn->tcp_upload_params_virt_addr) 706 goto nomem; 707 memset(p_conn->tcp_upload_params_virt_addr, 0, 708 sizeof(*p_conn->tcp_upload_params_virt_addr)); 709 710 if (!p_conn->r2tq.p_virt_addr) 711 goto nomem; 712 qed_chain_pbl_zero_mem(&p_conn->r2tq); 713 714 if (!p_conn->uhq.p_virt_addr) 715 goto nomem; 716 qed_chain_pbl_zero_mem(&p_conn->uhq); 717 718 if (!p_conn->xhq.p_virt_addr) 719 goto nomem; 720 qed_chain_pbl_zero_mem(&p_conn->xhq); 721 722 return 0; 723 nomem: 724 return -ENOMEM; 725 } 726 727 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 728 struct qed_iscsi_conn **p_out_conn) 729 { 730 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 731 struct scsi_terminate_extra_params *p_q_cnts = NULL; 732 struct qed_iscsi_pf_params *p_params = NULL; 733 struct tcp_upload_params *p_tcp = NULL; 734 struct qed_iscsi_conn *p_conn = NULL; 735 int rc = 0; 736 737 /* Try finding a free connection that can be used */ 738 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 739 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 740 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 741 struct qed_iscsi_conn, list_entry); 742 if (p_conn) { 743 list_del(&p_conn->list_entry); 744 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 745 *p_out_conn = p_conn; 746 return 0; 747 } 748 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 749 750 /* Need to allocate a new connection */ 751 p_params = &p_hwfn->pf_params.iscsi_pf_params; 752 753 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 754 if (!p_conn) 755 return -ENOMEM; 756 757 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 758 sizeof(*p_q_cnts), 759 &p_conn->queue_cnts_phys_addr, 760 GFP_KERNEL); 761 if (!p_q_cnts) 762 goto nomem_queue_cnts_param; 763 p_conn->queue_cnts_virt_addr = p_q_cnts; 764 765 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 766 sizeof(*p_tcp), 767 &p_conn->tcp_upload_params_phys_addr, 768 GFP_KERNEL); 769 if (!p_tcp) 770 goto nomem_upload_param; 771 p_conn->tcp_upload_params_virt_addr = p_tcp; 772 773 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 774 QED_CHAIN_PAGE_SIZE / 0x80; 775 rc = qed_chain_alloc(p_hwfn->cdev, 776 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 777 QED_CHAIN_MODE_PBL, 778 QED_CHAIN_CNT_TYPE_U16, 779 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL); 780 if (rc) 781 goto nomem_r2tq; 782 783 uhq_num_elements = p_params->num_uhq_pages_in_ring * 784 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 785 rc = qed_chain_alloc(p_hwfn->cdev, 786 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 787 QED_CHAIN_MODE_PBL, 788 QED_CHAIN_CNT_TYPE_U16, 789 uhq_num_elements, 790 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL); 791 if (rc) 792 goto nomem_uhq; 793 794 xhq_num_elements = uhq_num_elements; 795 rc = qed_chain_alloc(p_hwfn->cdev, 796 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 797 QED_CHAIN_MODE_PBL, 798 QED_CHAIN_CNT_TYPE_U16, 799 xhq_num_elements, 800 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL); 801 if (rc) 802 goto nomem; 803 804 p_conn->free_on_delete = true; 805 *p_out_conn = p_conn; 806 return 0; 807 808 nomem: 809 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 810 nomem_uhq: 811 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 812 nomem_r2tq: 813 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 814 sizeof(struct tcp_upload_params), 815 p_conn->tcp_upload_params_virt_addr, 816 p_conn->tcp_upload_params_phys_addr); 817 nomem_upload_param: 818 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 819 sizeof(struct scsi_terminate_extra_params), 820 p_conn->queue_cnts_virt_addr, 821 p_conn->queue_cnts_phys_addr); 822 nomem_queue_cnts_param: 823 kfree(p_conn); 824 825 return -ENOMEM; 826 } 827 828 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 829 struct qed_iscsi_conn *p_in_conn, 830 struct qed_iscsi_conn **p_out_conn) 831 { 832 struct qed_iscsi_conn *p_conn = NULL; 833 int rc = 0; 834 u32 icid; 835 836 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 837 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 838 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 839 if (rc) 840 return rc; 841 842 /* Use input connection or allocate a new one */ 843 if (p_in_conn) 844 p_conn = p_in_conn; 845 else 846 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 847 848 if (!rc) 849 rc = qed_iscsi_setup_connection(p_conn); 850 851 if (rc) { 852 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 853 qed_cxt_release_cid(p_hwfn, icid); 854 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 855 return rc; 856 } 857 858 p_conn->icid = icid; 859 p_conn->conn_id = (u16)icid; 860 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 861 862 *p_out_conn = p_conn; 863 864 return rc; 865 } 866 867 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 868 struct qed_iscsi_conn *p_conn) 869 { 870 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 871 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 872 qed_cxt_release_cid(p_hwfn, p_conn->icid); 873 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 874 } 875 876 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 877 struct qed_iscsi_conn *p_conn) 878 { 879 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 880 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 881 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 882 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 883 sizeof(struct tcp_upload_params), 884 p_conn->tcp_upload_params_virt_addr, 885 p_conn->tcp_upload_params_phys_addr); 886 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 887 sizeof(struct scsi_terminate_extra_params), 888 p_conn->queue_cnts_virt_addr, 889 p_conn->queue_cnts_phys_addr); 890 kfree(p_conn); 891 } 892 893 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 894 { 895 struct qed_iscsi_info *p_iscsi_info; 896 897 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 898 if (!p_iscsi_info) 899 return -ENOMEM; 900 901 INIT_LIST_HEAD(&p_iscsi_info->free_list); 902 903 p_hwfn->p_iscsi_info = p_iscsi_info; 904 return 0; 905 } 906 907 void qed_iscsi_setup(struct qed_hwfn *p_hwfn) 908 { 909 spin_lock_init(&p_hwfn->p_iscsi_info->lock); 910 } 911 912 void qed_iscsi_free(struct qed_hwfn *p_hwfn) 913 { 914 struct qed_iscsi_conn *p_conn = NULL; 915 916 if (!p_hwfn->p_iscsi_info) 917 return; 918 919 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 920 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 921 struct qed_iscsi_conn, list_entry); 922 if (p_conn) { 923 list_del(&p_conn->list_entry); 924 qed_iscsi_free_connection(p_hwfn, p_conn); 925 } 926 } 927 928 kfree(p_hwfn->p_iscsi_info); 929 p_hwfn->p_iscsi_info = NULL; 930 } 931 932 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 933 struct qed_ptt *p_ptt, 934 struct qed_iscsi_stats *p_stats) 935 { 936 struct tstorm_iscsi_stats_drv tstats; 937 u32 tstats_addr; 938 939 memset(&tstats, 0, sizeof(tstats)); 940 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 941 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 942 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 943 944 p_stats->iscsi_rx_bytes_cnt = 945 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 946 p_stats->iscsi_rx_packet_cnt = 947 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 948 p_stats->iscsi_rx_new_ooo_isle_events_cnt = 949 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt); 950 p_stats->iscsi_cmdq_threshold_cnt = 951 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 952 p_stats->iscsi_rq_threshold_cnt = 953 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 954 p_stats->iscsi_immq_threshold_cnt = 955 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 956 } 957 958 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 959 struct qed_ptt *p_ptt, 960 struct qed_iscsi_stats *p_stats) 961 { 962 struct mstorm_iscsi_stats_drv mstats; 963 u32 mstats_addr; 964 965 memset(&mstats, 0, sizeof(mstats)); 966 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 967 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 968 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 969 970 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 971 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 972 } 973 974 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 975 struct qed_ptt *p_ptt, 976 struct qed_iscsi_stats *p_stats) 977 { 978 struct ustorm_iscsi_stats_drv ustats; 979 u32 ustats_addr; 980 981 memset(&ustats, 0, sizeof(ustats)); 982 ustats_addr = BAR0_MAP_REG_USDM_RAM + 983 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 984 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 985 986 p_stats->iscsi_rx_data_pdu_cnt = 987 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 988 p_stats->iscsi_rx_r2t_pdu_cnt = 989 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 990 p_stats->iscsi_rx_total_pdu_cnt = 991 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 992 } 993 994 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 995 struct qed_ptt *p_ptt, 996 struct qed_iscsi_stats *p_stats) 997 { 998 struct xstorm_iscsi_stats_drv xstats; 999 u32 xstats_addr; 1000 1001 memset(&xstats, 0, sizeof(xstats)); 1002 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 1003 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1004 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 1005 1006 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 1007 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 1008 p_stats->iscsi_tx_fast_retransmit_event_cnt = 1009 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 1010 } 1011 1012 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 1013 struct qed_ptt *p_ptt, 1014 struct qed_iscsi_stats *p_stats) 1015 { 1016 struct ystorm_iscsi_stats_drv ystats; 1017 u32 ystats_addr; 1018 1019 memset(&ystats, 0, sizeof(ystats)); 1020 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 1021 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1022 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 1023 1024 p_stats->iscsi_tx_data_pdu_cnt = 1025 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 1026 p_stats->iscsi_tx_r2t_pdu_cnt = 1027 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 1028 p_stats->iscsi_tx_total_pdu_cnt = 1029 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 1030 } 1031 1032 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 1033 struct qed_ptt *p_ptt, 1034 struct qed_iscsi_stats *p_stats) 1035 { 1036 struct pstorm_iscsi_stats_drv pstats; 1037 u32 pstats_addr; 1038 1039 memset(&pstats, 0, sizeof(pstats)); 1040 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 1041 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1042 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 1043 1044 p_stats->iscsi_tx_bytes_cnt = 1045 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 1046 p_stats->iscsi_tx_packet_cnt = 1047 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 1048 } 1049 1050 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 1051 struct qed_iscsi_stats *stats) 1052 { 1053 struct qed_ptt *p_ptt; 1054 1055 memset(stats, 0, sizeof(*stats)); 1056 1057 p_ptt = qed_ptt_acquire(p_hwfn); 1058 if (!p_ptt) { 1059 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 1060 return -EAGAIN; 1061 } 1062 1063 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 1064 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 1065 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 1066 1067 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 1068 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 1069 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 1070 1071 qed_ptt_release(p_hwfn, p_ptt); 1072 1073 return 0; 1074 } 1075 1076 struct qed_hash_iscsi_con { 1077 struct hlist_node node; 1078 struct qed_iscsi_conn *con; 1079 }; 1080 1081 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 1082 struct qed_dev_iscsi_info *info) 1083 { 1084 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 1085 1086 int rc; 1087 1088 memset(info, 0, sizeof(*info)); 1089 rc = qed_fill_dev_info(cdev, &info->common); 1090 1091 info->primary_dbq_rq_addr = 1092 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 1093 info->secondary_bdq_rq_addr = 1094 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 1095 1096 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ); 1097 1098 return rc; 1099 } 1100 1101 static void qed_register_iscsi_ops(struct qed_dev *cdev, 1102 struct qed_iscsi_cb_ops *ops, void *cookie) 1103 { 1104 cdev->protocol_ops.iscsi = ops; 1105 cdev->ops_cookie = cookie; 1106 } 1107 1108 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 1109 u32 handle) 1110 { 1111 struct qed_hash_iscsi_con *hash_con = NULL; 1112 1113 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 1114 return NULL; 1115 1116 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 1117 if (hash_con->con->icid == handle) 1118 break; 1119 } 1120 1121 if (!hash_con || (hash_con->con->icid != handle)) 1122 return NULL; 1123 1124 return hash_con; 1125 } 1126 1127 static int qed_iscsi_stop(struct qed_dev *cdev) 1128 { 1129 int rc; 1130 1131 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1132 DP_NOTICE(cdev, "iscsi already stopped\n"); 1133 return 0; 1134 } 1135 1136 if (!hash_empty(cdev->connections)) { 1137 DP_NOTICE(cdev, 1138 "Can't stop iscsi - not all connections were returned\n"); 1139 return -EINVAL; 1140 } 1141 1142 /* Stop the iscsi */ 1143 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev), 1144 QED_SPQ_MODE_EBLOCK, NULL); 1145 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1146 1147 return rc; 1148 } 1149 1150 static int qed_iscsi_start(struct qed_dev *cdev, 1151 struct qed_iscsi_tid *tasks, 1152 void *event_context, 1153 iscsi_event_cb_t async_event_cb) 1154 { 1155 int rc; 1156 struct qed_tid_mem *tid_info; 1157 1158 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1159 DP_NOTICE(cdev, "iscsi already started;\n"); 1160 return 0; 1161 } 1162 1163 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev), 1164 QED_SPQ_MODE_EBLOCK, NULL, event_context, 1165 async_event_cb); 1166 if (rc) { 1167 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1168 return rc; 1169 } 1170 1171 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1172 hash_init(cdev->connections); 1173 1174 if (!tasks) 1175 return 0; 1176 1177 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1178 1179 if (!tid_info) { 1180 qed_iscsi_stop(cdev); 1181 return -ENOMEM; 1182 } 1183 1184 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev), 1185 tid_info); 1186 if (rc) { 1187 DP_NOTICE(cdev, "Failed to gather task information\n"); 1188 qed_iscsi_stop(cdev); 1189 kfree(tid_info); 1190 return rc; 1191 } 1192 1193 /* Fill task information */ 1194 tasks->size = tid_info->tid_size; 1195 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1196 memcpy(tasks->blocks, tid_info->blocks, 1197 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1198 1199 kfree(tid_info); 1200 1201 return 0; 1202 } 1203 1204 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1205 u32 *handle, 1206 u32 *fw_cid, void __iomem **p_doorbell) 1207 { 1208 struct qed_hash_iscsi_con *hash_con; 1209 int rc; 1210 1211 /* Allocate a hashed connection */ 1212 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1213 if (!hash_con) 1214 return -ENOMEM; 1215 1216 /* Acquire the connection */ 1217 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL, 1218 &hash_con->con); 1219 if (rc) { 1220 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1221 kfree(hash_con); 1222 return rc; 1223 } 1224 1225 /* Added the connection to hash table */ 1226 *handle = hash_con->con->icid; 1227 *fw_cid = hash_con->con->fw_cid; 1228 hash_add(cdev->connections, &hash_con->node, *handle); 1229 1230 if (p_doorbell) 1231 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev), 1232 *handle); 1233 1234 return 0; 1235 } 1236 1237 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1238 { 1239 struct qed_hash_iscsi_con *hash_con; 1240 1241 hash_con = qed_iscsi_get_hash(cdev, handle); 1242 if (!hash_con) { 1243 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1244 handle); 1245 return -EINVAL; 1246 } 1247 1248 hlist_del(&hash_con->node); 1249 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con); 1250 kfree(hash_con); 1251 1252 return 0; 1253 } 1254 1255 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1256 u32 handle, 1257 struct qed_iscsi_params_offload *conn_info) 1258 { 1259 struct qed_hash_iscsi_con *hash_con; 1260 struct qed_iscsi_conn *con; 1261 1262 hash_con = qed_iscsi_get_hash(cdev, handle); 1263 if (!hash_con) { 1264 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1265 handle); 1266 return -EINVAL; 1267 } 1268 1269 /* Update the connection with information from the params */ 1270 con = hash_con->con; 1271 1272 ether_addr_copy(con->local_mac, conn_info->src.mac); 1273 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1274 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1275 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1276 con->local_port = conn_info->src.port; 1277 con->remote_port = conn_info->dst.port; 1278 1279 con->layer_code = conn_info->layer_code; 1280 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1281 con->initial_ack = conn_info->initial_ack; 1282 con->vlan_id = conn_info->vlan_id; 1283 con->tcp_flags = conn_info->tcp_flags; 1284 con->ip_version = conn_info->ip_version; 1285 con->default_cq = conn_info->default_cq; 1286 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1287 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1288 con->rcv_next = conn_info->rcv_next; 1289 con->snd_una = conn_info->snd_una; 1290 con->snd_next = conn_info->snd_next; 1291 con->snd_max = conn_info->snd_max; 1292 con->snd_wnd = conn_info->snd_wnd; 1293 con->rcv_wnd = conn_info->rcv_wnd; 1294 con->snd_wl1 = conn_info->snd_wl1; 1295 con->cwnd = conn_info->cwnd; 1296 con->ss_thresh = conn_info->ss_thresh; 1297 con->srtt = conn_info->srtt; 1298 con->rtt_var = conn_info->rtt_var; 1299 con->ts_recent = conn_info->ts_recent; 1300 con->ts_recent_age = conn_info->ts_recent_age; 1301 con->total_rt = conn_info->total_rt; 1302 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1303 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1304 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1305 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1306 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1307 con->rt_cnt = conn_info->rt_cnt; 1308 con->flow_label = conn_info->flow_label; 1309 con->ka_timeout = conn_info->ka_timeout; 1310 con->ka_interval = conn_info->ka_interval; 1311 con->max_rt_time = conn_info->max_rt_time; 1312 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1313 con->ttl = conn_info->ttl; 1314 con->tos_or_tc = conn_info->tos_or_tc; 1315 con->remote_port = conn_info->remote_port; 1316 con->local_port = conn_info->local_port; 1317 con->mss = conn_info->mss; 1318 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1319 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1320 con->da_timeout_value = conn_info->da_timeout_value; 1321 con->ack_frequency = conn_info->ack_frequency; 1322 1323 /* Set default values on other connection fields */ 1324 con->offl_flags = 0x1; 1325 1326 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con, 1327 QED_SPQ_MODE_EBLOCK, NULL); 1328 } 1329 1330 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1331 u32 handle, 1332 struct qed_iscsi_params_update *conn_info) 1333 { 1334 struct qed_hash_iscsi_con *hash_con; 1335 struct qed_iscsi_conn *con; 1336 1337 hash_con = qed_iscsi_get_hash(cdev, handle); 1338 if (!hash_con) { 1339 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1340 handle); 1341 return -EINVAL; 1342 } 1343 1344 /* Update the connection with information from the params */ 1345 con = hash_con->con; 1346 con->update_flag = conn_info->update_flag; 1347 con->max_seq_size = conn_info->max_seq_size; 1348 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1349 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1350 con->first_seq_length = conn_info->first_seq_length; 1351 con->exp_stat_sn = conn_info->exp_stat_sn; 1352 1353 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con, 1354 QED_SPQ_MODE_EBLOCK, NULL); 1355 } 1356 1357 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1358 { 1359 struct qed_hash_iscsi_con *hash_con; 1360 1361 hash_con = qed_iscsi_get_hash(cdev, handle); 1362 if (!hash_con) { 1363 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1364 handle); 1365 return -EINVAL; 1366 } 1367 1368 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev), 1369 hash_con->con, 1370 QED_SPQ_MODE_EBLOCK, NULL); 1371 } 1372 1373 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1374 u32 handle, u8 abrt_conn) 1375 { 1376 struct qed_hash_iscsi_con *hash_con; 1377 1378 hash_con = qed_iscsi_get_hash(cdev, handle); 1379 if (!hash_con) { 1380 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1381 handle); 1382 return -EINVAL; 1383 } 1384 1385 hash_con->con->abortive_dsconnect = abrt_conn; 1386 1387 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev), 1388 hash_con->con, 1389 QED_SPQ_MODE_EBLOCK, NULL); 1390 } 1391 1392 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1393 { 1394 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats); 1395 } 1396 1397 static int qed_iscsi_change_mac(struct qed_dev *cdev, 1398 u32 handle, const u8 *mac) 1399 { 1400 struct qed_hash_iscsi_con *hash_con; 1401 1402 hash_con = qed_iscsi_get_hash(cdev, handle); 1403 if (!hash_con) { 1404 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1405 handle); 1406 return -EINVAL; 1407 } 1408 1409 return qed_sp_iscsi_mac_update(QED_LEADING_HWFN(cdev), 1410 hash_con->con, 1411 QED_SPQ_MODE_EBLOCK, NULL); 1412 } 1413 1414 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev, 1415 struct qed_mcp_iscsi_stats *stats) 1416 { 1417 struct qed_iscsi_stats proto_stats; 1418 1419 /* Retrieve FW statistics */ 1420 memset(&proto_stats, 0, sizeof(proto_stats)); 1421 if (qed_iscsi_stats(cdev, &proto_stats)) { 1422 DP_VERBOSE(cdev, QED_MSG_STORAGE, 1423 "Failed to collect ISCSI statistics\n"); 1424 return; 1425 } 1426 1427 /* Translate FW statistics into struct */ 1428 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt; 1429 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt; 1430 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt; 1431 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt; 1432 } 1433 1434 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1435 .common = &qed_common_ops_pass, 1436 .ll2 = &qed_ll2_ops_pass, 1437 .fill_dev_info = &qed_fill_iscsi_dev_info, 1438 .register_ops = &qed_register_iscsi_ops, 1439 .start = &qed_iscsi_start, 1440 .stop = &qed_iscsi_stop, 1441 .acquire_conn = &qed_iscsi_acquire_conn, 1442 .release_conn = &qed_iscsi_release_conn, 1443 .offload_conn = &qed_iscsi_offload_conn, 1444 .update_conn = &qed_iscsi_update_conn, 1445 .destroy_conn = &qed_iscsi_destroy_conn, 1446 .clear_sq = &qed_iscsi_clear_conn_sq, 1447 .get_stats = &qed_iscsi_stats, 1448 .change_mac = &qed_iscsi_change_mac, 1449 }; 1450 1451 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1452 { 1453 return &qed_iscsi_ops_pass; 1454 } 1455 EXPORT_SYMBOL(qed_get_iscsi_ops); 1456 1457 void qed_put_iscsi_ops(void) 1458 { 1459 } 1460 EXPORT_SYMBOL(qed_put_iscsi_ops); 1461