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 qed_sp_destroy_request(p_hwfn, p_ent); 204 return -EINVAL; 205 } 206 207 SET_FIELD(p_init->hdr.flags, 208 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); 209 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; 210 211 val = p_params->half_way_close_timeout; 212 p_init->half_way_close_timeout = cpu_to_le16(val); 213 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 214 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 215 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 216 p_init->ll2_rx_queue_id = 217 p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + 218 p_params->ll2_ooo_queue_id; 219 220 p_init->func_params.log_page_size = p_params->log_page_size; 221 val = p_params->num_tasks; 222 p_init->func_params.num_tasks = cpu_to_le16(val); 223 p_init->debug_mode.flags = p_params->debug_mode; 224 225 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 226 p_params->glbl_q_params_addr); 227 228 val = p_params->cq_num_entries; 229 p_queue->cq_num_entries = cpu_to_le16(val); 230 val = p_params->cmdq_num_entries; 231 p_queue->cmdq_num_entries = cpu_to_le16(val); 232 p_queue->num_queues = p_params->num_queues; 233 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 234 p_queue->queue_relative_offset = (u8)dval; 235 p_queue->cq_sb_pi = p_params->gl_rq_pi; 236 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 237 238 for (i = 0; i < p_params->num_queues; i++) { 239 val = qed_get_igu_sb_id(p_hwfn, i); 240 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 241 } 242 243 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 244 245 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 246 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 247 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 248 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 249 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 250 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 251 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 252 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 253 254 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 255 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 256 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 257 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 258 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 259 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 260 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 261 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 262 val = p_params->rq_buffer_size; 263 p_queue->rq_buffer_size = cpu_to_le16(val); 264 if (p_params->is_target) { 265 SET_FIELD(p_queue->q_validity, 266 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 267 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 268 SET_FIELD(p_queue->q_validity, 269 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 270 SET_FIELD(p_queue->q_validity, 271 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 272 } else { 273 SET_FIELD(p_queue->q_validity, 274 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 275 } 276 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 277 val = p_params->tx_sws_timer; 278 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 279 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt; 280 281 p_hwfn->p_iscsi_info->event_context = event_context; 282 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 283 284 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI, 285 qed_iscsi_async_event); 286 287 return qed_spq_post(p_hwfn, p_ent, NULL); 288 } 289 290 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 291 struct qed_iscsi_conn *p_conn, 292 enum spq_mode comp_mode, 293 struct qed_spq_comp_cb *p_comp_addr) 294 { 295 struct iscsi_spe_conn_offload *p_ramrod = NULL; 296 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 297 struct tcp_offload_params *p_tcp = NULL; 298 struct qed_spq_entry *p_ent = NULL; 299 struct qed_sp_init_data init_data; 300 dma_addr_t r2tq_pbl_addr; 301 dma_addr_t xhq_pbl_addr; 302 dma_addr_t uhq_pbl_addr; 303 u16 physical_q; 304 int rc = 0; 305 u32 dval; 306 u16 wval; 307 u16 *p; 308 u8 i; 309 310 /* Get SPQ entry */ 311 memset(&init_data, 0, sizeof(init_data)); 312 init_data.cid = p_conn->icid; 313 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 314 init_data.comp_mode = comp_mode; 315 init_data.p_comp_data = p_comp_addr; 316 317 rc = qed_sp_init_request(p_hwfn, &p_ent, 318 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 319 PROTOCOLID_ISCSI, &init_data); 320 if (rc) 321 return rc; 322 323 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 324 325 /* Transmission PQ is the first of the PF */ 326 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 327 p_conn->physical_q0 = cpu_to_le16(physical_q); 328 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 329 330 /* iSCSI Pure-ACK PQ */ 331 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 332 p_conn->physical_q1 = cpu_to_le16(physical_q); 333 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 334 335 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; 336 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, 337 p_conn->layer_code); 338 339 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 340 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 341 342 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 343 344 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 345 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 346 347 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 348 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 349 350 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 351 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 352 353 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 354 p_ramrod->iscsi.flags = p_conn->offl_flags; 355 p_ramrod->iscsi.default_cq = p_conn->default_cq; 356 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 357 358 if (!GET_FIELD(p_ramrod->iscsi.flags, 359 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 360 p_tcp = &p_ramrod->tcp; 361 362 p = (u16 *)p_conn->local_mac; 363 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 364 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 365 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 366 367 p = (u16 *)p_conn->remote_mac; 368 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 369 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 370 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 371 372 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 373 374 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags); 375 p_tcp->ip_version = p_conn->ip_version; 376 for (i = 0; i < 4; i++) { 377 dval = p_conn->remote_ip[i]; 378 p_tcp->remote_ip[i] = cpu_to_le32(dval); 379 dval = p_conn->local_ip[i]; 380 p_tcp->local_ip[i] = cpu_to_le32(dval); 381 } 382 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 383 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 384 385 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 386 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 387 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 388 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 389 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 390 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 391 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 392 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 393 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 394 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 395 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 396 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 397 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 398 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 399 dval = p_conn->ka_timeout_delta; 400 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 401 dval = p_conn->rt_timeout_delta; 402 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 403 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 404 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 405 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 406 p_tcp->rt_cnt = p_conn->rt_cnt; 407 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 408 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 409 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 410 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 411 dval = p_conn->initial_rcv_wnd; 412 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 413 p_tcp->ttl = p_conn->ttl; 414 p_tcp->tos_or_tc = p_conn->tos_or_tc; 415 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 416 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 417 p_tcp->mss = cpu_to_le16(p_conn->mss); 418 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 419 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 420 wval = p_conn->da_timeout_value; 421 p_tcp->da_timeout_value = cpu_to_le16(wval); 422 p_tcp->ack_frequency = p_conn->ack_frequency; 423 p_tcp->connect_mode = p_conn->connect_mode; 424 } else { 425 p_tcp2 = 426 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 427 428 p = (u16 *)p_conn->local_mac; 429 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 430 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 431 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 432 433 p = (u16 *)p_conn->remote_mac; 434 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 435 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 436 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 437 438 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 439 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags); 440 441 p_tcp2->ip_version = p_conn->ip_version; 442 for (i = 0; i < 4; i++) { 443 dval = p_conn->remote_ip[i]; 444 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 445 dval = p_conn->local_ip[i]; 446 p_tcp2->local_ip[i] = cpu_to_le32(dval); 447 } 448 449 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 450 p_tcp2->ttl = p_conn->ttl; 451 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 452 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 453 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 454 p_tcp2->mss = cpu_to_le16(p_conn->mss); 455 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 456 p_tcp2->connect_mode = p_conn->connect_mode; 457 wval = p_conn->syn_ip_payload_length; 458 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 459 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 460 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 461 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd); 462 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt; 463 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 464 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 465 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval); 466 } 467 468 return qed_spq_post(p_hwfn, p_ent, NULL); 469 } 470 471 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 472 struct qed_iscsi_conn *p_conn, 473 enum spq_mode comp_mode, 474 struct qed_spq_comp_cb *p_comp_addr) 475 { 476 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 477 struct qed_spq_entry *p_ent = NULL; 478 struct qed_sp_init_data init_data; 479 int rc = -EINVAL; 480 u32 dval; 481 482 /* Get SPQ entry */ 483 memset(&init_data, 0, sizeof(init_data)); 484 init_data.cid = p_conn->icid; 485 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 486 init_data.comp_mode = comp_mode; 487 init_data.p_comp_data = p_comp_addr; 488 489 rc = qed_sp_init_request(p_hwfn, &p_ent, 490 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 491 PROTOCOLID_ISCSI, &init_data); 492 if (rc) 493 return rc; 494 495 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 496 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; 497 SET_FIELD(p_ramrod->hdr.flags, 498 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 499 500 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 501 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 502 p_ramrod->flags = p_conn->update_flag; 503 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 504 dval = p_conn->max_recv_pdu_length; 505 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 506 dval = p_conn->max_send_pdu_length; 507 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 508 dval = p_conn->first_seq_length; 509 p_ramrod->first_seq_length = cpu_to_le32(dval); 510 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 511 512 return qed_spq_post(p_hwfn, p_ent, NULL); 513 } 514 515 static int 516 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn, 517 struct qed_iscsi_conn *p_conn, 518 enum spq_mode comp_mode, 519 struct qed_spq_comp_cb *p_comp_addr) 520 { 521 struct iscsi_spe_conn_mac_update *p_ramrod = NULL; 522 struct qed_spq_entry *p_ent = NULL; 523 struct qed_sp_init_data init_data; 524 int rc = -EINVAL; 525 u8 ucval; 526 527 /* Get SPQ entry */ 528 memset(&init_data, 0, sizeof(init_data)); 529 init_data.cid = p_conn->icid; 530 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 531 init_data.comp_mode = comp_mode; 532 init_data.p_comp_data = p_comp_addr; 533 534 rc = qed_sp_init_request(p_hwfn, &p_ent, 535 ISCSI_RAMROD_CMD_ID_MAC_UPDATE, 536 PROTOCOLID_ISCSI, &init_data); 537 if (rc) 538 return rc; 539 540 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update; 541 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE; 542 SET_FIELD(p_ramrod->hdr.flags, 543 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 544 545 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 546 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 547 ucval = p_conn->remote_mac[1]; 548 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval; 549 ucval = p_conn->remote_mac[0]; 550 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval; 551 ucval = p_conn->remote_mac[3]; 552 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval; 553 ucval = p_conn->remote_mac[2]; 554 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval; 555 ucval = p_conn->remote_mac[5]; 556 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval; 557 ucval = p_conn->remote_mac[4]; 558 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval; 559 560 return qed_spq_post(p_hwfn, p_ent, NULL); 561 } 562 563 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 564 struct qed_iscsi_conn *p_conn, 565 enum spq_mode comp_mode, 566 struct qed_spq_comp_cb *p_comp_addr) 567 { 568 struct iscsi_spe_conn_termination *p_ramrod = NULL; 569 struct qed_spq_entry *p_ent = NULL; 570 struct qed_sp_init_data init_data; 571 int rc = -EINVAL; 572 573 /* Get SPQ entry */ 574 memset(&init_data, 0, sizeof(init_data)); 575 init_data.cid = p_conn->icid; 576 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 577 init_data.comp_mode = comp_mode; 578 init_data.p_comp_data = p_comp_addr; 579 580 rc = qed_sp_init_request(p_hwfn, &p_ent, 581 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 582 PROTOCOLID_ISCSI, &init_data); 583 if (rc) 584 return rc; 585 586 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 587 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; 588 SET_FIELD(p_ramrod->hdr.flags, 589 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 590 591 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 592 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 593 p_ramrod->abortive = p_conn->abortive_dsconnect; 594 595 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 596 p_conn->tcp_upload_params_phys_addr); 597 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 598 599 return qed_spq_post(p_hwfn, p_ent, NULL); 600 } 601 602 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 603 struct qed_iscsi_conn *p_conn, 604 enum spq_mode comp_mode, 605 struct qed_spq_comp_cb *p_comp_addr) 606 { 607 struct iscsi_slow_path_hdr *p_ramrod = NULL; 608 struct qed_spq_entry *p_ent = NULL; 609 struct qed_sp_init_data init_data; 610 int rc = -EINVAL; 611 612 /* Get SPQ entry */ 613 memset(&init_data, 0, sizeof(init_data)); 614 init_data.cid = p_conn->icid; 615 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 616 init_data.comp_mode = comp_mode; 617 init_data.p_comp_data = p_comp_addr; 618 619 rc = qed_sp_init_request(p_hwfn, &p_ent, 620 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 621 PROTOCOLID_ISCSI, &init_data); 622 if (rc) 623 return rc; 624 625 p_ramrod = &p_ent->ramrod.iscsi_empty; 626 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; 627 SET_FIELD(p_ramrod->flags, 628 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 629 630 return qed_spq_post(p_hwfn, p_ent, NULL); 631 } 632 633 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 634 enum spq_mode comp_mode, 635 struct qed_spq_comp_cb *p_comp_addr) 636 { 637 struct iscsi_spe_func_dstry *p_ramrod = NULL; 638 struct qed_spq_entry *p_ent = NULL; 639 struct qed_sp_init_data init_data; 640 int rc = 0; 641 642 /* Get SPQ entry */ 643 memset(&init_data, 0, sizeof(init_data)); 644 init_data.cid = qed_spq_get_cid(p_hwfn); 645 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 646 init_data.comp_mode = comp_mode; 647 init_data.p_comp_data = p_comp_addr; 648 649 rc = qed_sp_init_request(p_hwfn, &p_ent, 650 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 651 PROTOCOLID_ISCSI, &init_data); 652 if (rc) 653 return rc; 654 655 p_ramrod = &p_ent->ramrod.iscsi_destroy; 656 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; 657 658 rc = qed_spq_post(p_hwfn, p_ent, NULL); 659 660 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI); 661 return rc; 662 } 663 664 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 665 { 666 return (u8 __iomem *)p_hwfn->doorbells + 667 qed_db_addr(cid, DQ_DEMS_LEGACY); 668 } 669 670 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 671 u8 bdq_id) 672 { 673 if (RESC_NUM(p_hwfn, QED_BDQ)) { 674 return (u8 __iomem *)p_hwfn->regview + 675 GTT_BAR0_MAP_REG_MSDM_RAM + 676 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 677 QED_BDQ), 678 bdq_id); 679 } else { 680 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 681 return NULL; 682 } 683 } 684 685 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 686 u8 bdq_id) 687 { 688 if (RESC_NUM(p_hwfn, QED_BDQ)) { 689 return (u8 __iomem *)p_hwfn->regview + 690 GTT_BAR0_MAP_REG_TSDM_RAM + 691 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 692 QED_BDQ), 693 bdq_id); 694 } else { 695 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 696 return NULL; 697 } 698 } 699 700 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn) 701 { 702 if (!p_conn->queue_cnts_virt_addr) 703 goto nomem; 704 memset(p_conn->queue_cnts_virt_addr, 0, 705 sizeof(*p_conn->queue_cnts_virt_addr)); 706 707 if (!p_conn->tcp_upload_params_virt_addr) 708 goto nomem; 709 memset(p_conn->tcp_upload_params_virt_addr, 0, 710 sizeof(*p_conn->tcp_upload_params_virt_addr)); 711 712 if (!p_conn->r2tq.p_virt_addr) 713 goto nomem; 714 qed_chain_pbl_zero_mem(&p_conn->r2tq); 715 716 if (!p_conn->uhq.p_virt_addr) 717 goto nomem; 718 qed_chain_pbl_zero_mem(&p_conn->uhq); 719 720 if (!p_conn->xhq.p_virt_addr) 721 goto nomem; 722 qed_chain_pbl_zero_mem(&p_conn->xhq); 723 724 return 0; 725 nomem: 726 return -ENOMEM; 727 } 728 729 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 730 struct qed_iscsi_conn **p_out_conn) 731 { 732 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 733 struct scsi_terminate_extra_params *p_q_cnts = NULL; 734 struct qed_iscsi_pf_params *p_params = NULL; 735 struct tcp_upload_params *p_tcp = NULL; 736 struct qed_iscsi_conn *p_conn = NULL; 737 int rc = 0; 738 739 /* Try finding a free connection that can be used */ 740 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 741 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 742 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 743 struct qed_iscsi_conn, list_entry); 744 if (p_conn) { 745 list_del(&p_conn->list_entry); 746 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 747 *p_out_conn = p_conn; 748 return 0; 749 } 750 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 751 752 /* Need to allocate a new connection */ 753 p_params = &p_hwfn->pf_params.iscsi_pf_params; 754 755 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 756 if (!p_conn) 757 return -ENOMEM; 758 759 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 760 sizeof(*p_q_cnts), 761 &p_conn->queue_cnts_phys_addr, 762 GFP_KERNEL); 763 if (!p_q_cnts) 764 goto nomem_queue_cnts_param; 765 p_conn->queue_cnts_virt_addr = p_q_cnts; 766 767 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 768 sizeof(*p_tcp), 769 &p_conn->tcp_upload_params_phys_addr, 770 GFP_KERNEL); 771 if (!p_tcp) 772 goto nomem_upload_param; 773 p_conn->tcp_upload_params_virt_addr = p_tcp; 774 775 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 776 QED_CHAIN_PAGE_SIZE / 0x80; 777 rc = qed_chain_alloc(p_hwfn->cdev, 778 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 779 QED_CHAIN_MODE_PBL, 780 QED_CHAIN_CNT_TYPE_U16, 781 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL); 782 if (rc) 783 goto nomem_r2tq; 784 785 uhq_num_elements = p_params->num_uhq_pages_in_ring * 786 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 787 rc = qed_chain_alloc(p_hwfn->cdev, 788 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 789 QED_CHAIN_MODE_PBL, 790 QED_CHAIN_CNT_TYPE_U16, 791 uhq_num_elements, 792 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL); 793 if (rc) 794 goto nomem_uhq; 795 796 xhq_num_elements = uhq_num_elements; 797 rc = qed_chain_alloc(p_hwfn->cdev, 798 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 799 QED_CHAIN_MODE_PBL, 800 QED_CHAIN_CNT_TYPE_U16, 801 xhq_num_elements, 802 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL); 803 if (rc) 804 goto nomem; 805 806 p_conn->free_on_delete = true; 807 *p_out_conn = p_conn; 808 return 0; 809 810 nomem: 811 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 812 nomem_uhq: 813 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 814 nomem_r2tq: 815 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 816 sizeof(struct tcp_upload_params), 817 p_conn->tcp_upload_params_virt_addr, 818 p_conn->tcp_upload_params_phys_addr); 819 nomem_upload_param: 820 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 821 sizeof(struct scsi_terminate_extra_params), 822 p_conn->queue_cnts_virt_addr, 823 p_conn->queue_cnts_phys_addr); 824 nomem_queue_cnts_param: 825 kfree(p_conn); 826 827 return -ENOMEM; 828 } 829 830 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 831 struct qed_iscsi_conn *p_in_conn, 832 struct qed_iscsi_conn **p_out_conn) 833 { 834 struct qed_iscsi_conn *p_conn = NULL; 835 int rc = 0; 836 u32 icid; 837 838 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 839 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 840 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 841 if (rc) 842 return rc; 843 844 /* Use input connection or allocate a new one */ 845 if (p_in_conn) 846 p_conn = p_in_conn; 847 else 848 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 849 850 if (!rc) 851 rc = qed_iscsi_setup_connection(p_conn); 852 853 if (rc) { 854 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 855 qed_cxt_release_cid(p_hwfn, icid); 856 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 857 return rc; 858 } 859 860 p_conn->icid = icid; 861 p_conn->conn_id = (u16)icid; 862 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 863 864 *p_out_conn = p_conn; 865 866 return rc; 867 } 868 869 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 870 struct qed_iscsi_conn *p_conn) 871 { 872 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 873 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 874 qed_cxt_release_cid(p_hwfn, p_conn->icid); 875 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 876 } 877 878 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 879 struct qed_iscsi_conn *p_conn) 880 { 881 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 882 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 883 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 884 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 885 sizeof(struct tcp_upload_params), 886 p_conn->tcp_upload_params_virt_addr, 887 p_conn->tcp_upload_params_phys_addr); 888 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 889 sizeof(struct scsi_terminate_extra_params), 890 p_conn->queue_cnts_virt_addr, 891 p_conn->queue_cnts_phys_addr); 892 kfree(p_conn); 893 } 894 895 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 896 { 897 struct qed_iscsi_info *p_iscsi_info; 898 899 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 900 if (!p_iscsi_info) 901 return -ENOMEM; 902 903 INIT_LIST_HEAD(&p_iscsi_info->free_list); 904 905 p_hwfn->p_iscsi_info = p_iscsi_info; 906 return 0; 907 } 908 909 void qed_iscsi_setup(struct qed_hwfn *p_hwfn) 910 { 911 spin_lock_init(&p_hwfn->p_iscsi_info->lock); 912 } 913 914 void qed_iscsi_free(struct qed_hwfn *p_hwfn) 915 { 916 struct qed_iscsi_conn *p_conn = NULL; 917 918 if (!p_hwfn->p_iscsi_info) 919 return; 920 921 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 922 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 923 struct qed_iscsi_conn, list_entry); 924 if (p_conn) { 925 list_del(&p_conn->list_entry); 926 qed_iscsi_free_connection(p_hwfn, p_conn); 927 } 928 } 929 930 kfree(p_hwfn->p_iscsi_info); 931 p_hwfn->p_iscsi_info = NULL; 932 } 933 934 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 935 struct qed_ptt *p_ptt, 936 struct qed_iscsi_stats *p_stats) 937 { 938 struct tstorm_iscsi_stats_drv tstats; 939 u32 tstats_addr; 940 941 memset(&tstats, 0, sizeof(tstats)); 942 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 943 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 944 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 945 946 p_stats->iscsi_rx_bytes_cnt = 947 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 948 p_stats->iscsi_rx_packet_cnt = 949 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 950 p_stats->iscsi_rx_new_ooo_isle_events_cnt = 951 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt); 952 p_stats->iscsi_cmdq_threshold_cnt = 953 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 954 p_stats->iscsi_rq_threshold_cnt = 955 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 956 p_stats->iscsi_immq_threshold_cnt = 957 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 958 } 959 960 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 961 struct qed_ptt *p_ptt, 962 struct qed_iscsi_stats *p_stats) 963 { 964 struct mstorm_iscsi_stats_drv mstats; 965 u32 mstats_addr; 966 967 memset(&mstats, 0, sizeof(mstats)); 968 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 969 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 970 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 971 972 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 973 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 974 } 975 976 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 977 struct qed_ptt *p_ptt, 978 struct qed_iscsi_stats *p_stats) 979 { 980 struct ustorm_iscsi_stats_drv ustats; 981 u32 ustats_addr; 982 983 memset(&ustats, 0, sizeof(ustats)); 984 ustats_addr = BAR0_MAP_REG_USDM_RAM + 985 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 986 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 987 988 p_stats->iscsi_rx_data_pdu_cnt = 989 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 990 p_stats->iscsi_rx_r2t_pdu_cnt = 991 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 992 p_stats->iscsi_rx_total_pdu_cnt = 993 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 994 } 995 996 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 997 struct qed_ptt *p_ptt, 998 struct qed_iscsi_stats *p_stats) 999 { 1000 struct xstorm_iscsi_stats_drv xstats; 1001 u32 xstats_addr; 1002 1003 memset(&xstats, 0, sizeof(xstats)); 1004 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 1005 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1006 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 1007 1008 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 1009 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 1010 p_stats->iscsi_tx_fast_retransmit_event_cnt = 1011 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 1012 } 1013 1014 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 1015 struct qed_ptt *p_ptt, 1016 struct qed_iscsi_stats *p_stats) 1017 { 1018 struct ystorm_iscsi_stats_drv ystats; 1019 u32 ystats_addr; 1020 1021 memset(&ystats, 0, sizeof(ystats)); 1022 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 1023 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1024 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 1025 1026 p_stats->iscsi_tx_data_pdu_cnt = 1027 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 1028 p_stats->iscsi_tx_r2t_pdu_cnt = 1029 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 1030 p_stats->iscsi_tx_total_pdu_cnt = 1031 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 1032 } 1033 1034 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 1035 struct qed_ptt *p_ptt, 1036 struct qed_iscsi_stats *p_stats) 1037 { 1038 struct pstorm_iscsi_stats_drv pstats; 1039 u32 pstats_addr; 1040 1041 memset(&pstats, 0, sizeof(pstats)); 1042 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 1043 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 1044 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 1045 1046 p_stats->iscsi_tx_bytes_cnt = 1047 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 1048 p_stats->iscsi_tx_packet_cnt = 1049 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 1050 } 1051 1052 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 1053 struct qed_iscsi_stats *stats) 1054 { 1055 struct qed_ptt *p_ptt; 1056 1057 memset(stats, 0, sizeof(*stats)); 1058 1059 p_ptt = qed_ptt_acquire(p_hwfn); 1060 if (!p_ptt) { 1061 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 1062 return -EAGAIN; 1063 } 1064 1065 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 1066 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 1067 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 1068 1069 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 1070 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 1071 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 1072 1073 qed_ptt_release(p_hwfn, p_ptt); 1074 1075 return 0; 1076 } 1077 1078 struct qed_hash_iscsi_con { 1079 struct hlist_node node; 1080 struct qed_iscsi_conn *con; 1081 }; 1082 1083 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 1084 struct qed_dev_iscsi_info *info) 1085 { 1086 struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev); 1087 1088 int rc; 1089 1090 memset(info, 0, sizeof(*info)); 1091 rc = qed_fill_dev_info(cdev, &info->common); 1092 1093 info->primary_dbq_rq_addr = 1094 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 1095 info->secondary_bdq_rq_addr = 1096 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 1097 1098 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ); 1099 1100 return rc; 1101 } 1102 1103 static void qed_register_iscsi_ops(struct qed_dev *cdev, 1104 struct qed_iscsi_cb_ops *ops, void *cookie) 1105 { 1106 cdev->protocol_ops.iscsi = ops; 1107 cdev->ops_cookie = cookie; 1108 } 1109 1110 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 1111 u32 handle) 1112 { 1113 struct qed_hash_iscsi_con *hash_con = NULL; 1114 1115 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 1116 return NULL; 1117 1118 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 1119 if (hash_con->con->icid == handle) 1120 break; 1121 } 1122 1123 if (!hash_con || (hash_con->con->icid != handle)) 1124 return NULL; 1125 1126 return hash_con; 1127 } 1128 1129 static int qed_iscsi_stop(struct qed_dev *cdev) 1130 { 1131 int rc; 1132 1133 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1134 DP_NOTICE(cdev, "iscsi already stopped\n"); 1135 return 0; 1136 } 1137 1138 if (!hash_empty(cdev->connections)) { 1139 DP_NOTICE(cdev, 1140 "Can't stop iscsi - not all connections were returned\n"); 1141 return -EINVAL; 1142 } 1143 1144 /* Stop the iscsi */ 1145 rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1146 NULL); 1147 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1148 1149 return rc; 1150 } 1151 1152 static int qed_iscsi_start(struct qed_dev *cdev, 1153 struct qed_iscsi_tid *tasks, 1154 void *event_context, 1155 iscsi_event_cb_t async_event_cb) 1156 { 1157 int rc; 1158 struct qed_tid_mem *tid_info; 1159 1160 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1161 DP_NOTICE(cdev, "iscsi already started;\n"); 1162 return 0; 1163 } 1164 1165 rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK, 1166 NULL, event_context, async_event_cb); 1167 if (rc) { 1168 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1169 return rc; 1170 } 1171 1172 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1173 hash_init(cdev->connections); 1174 1175 if (!tasks) 1176 return 0; 1177 1178 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1179 1180 if (!tid_info) { 1181 qed_iscsi_stop(cdev); 1182 return -ENOMEM; 1183 } 1184 1185 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), 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_AFFIN_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_AFFIN_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_AFFIN_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_AFFIN_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_AFFIN_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_AFFIN_HWFN(cdev), hash_con->con, 1369 QED_SPQ_MODE_EBLOCK, NULL); 1370 } 1371 1372 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1373 u32 handle, u8 abrt_conn) 1374 { 1375 struct qed_hash_iscsi_con *hash_con; 1376 1377 hash_con = qed_iscsi_get_hash(cdev, handle); 1378 if (!hash_con) { 1379 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1380 handle); 1381 return -EINVAL; 1382 } 1383 1384 hash_con->con->abortive_dsconnect = abrt_conn; 1385 1386 return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con, 1387 QED_SPQ_MODE_EBLOCK, NULL); 1388 } 1389 1390 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1391 { 1392 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats); 1393 } 1394 1395 static int qed_iscsi_change_mac(struct qed_dev *cdev, 1396 u32 handle, const u8 *mac) 1397 { 1398 struct qed_hash_iscsi_con *hash_con; 1399 1400 hash_con = qed_iscsi_get_hash(cdev, handle); 1401 if (!hash_con) { 1402 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1403 handle); 1404 return -EINVAL; 1405 } 1406 1407 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con, 1408 QED_SPQ_MODE_EBLOCK, NULL); 1409 } 1410 1411 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev, 1412 struct qed_mcp_iscsi_stats *stats) 1413 { 1414 struct qed_iscsi_stats proto_stats; 1415 1416 /* Retrieve FW statistics */ 1417 memset(&proto_stats, 0, sizeof(proto_stats)); 1418 if (qed_iscsi_stats(cdev, &proto_stats)) { 1419 DP_VERBOSE(cdev, QED_MSG_STORAGE, 1420 "Failed to collect ISCSI statistics\n"); 1421 return; 1422 } 1423 1424 /* Translate FW statistics into struct */ 1425 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt; 1426 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt; 1427 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt; 1428 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt; 1429 } 1430 1431 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1432 .common = &qed_common_ops_pass, 1433 .ll2 = &qed_ll2_ops_pass, 1434 .fill_dev_info = &qed_fill_iscsi_dev_info, 1435 .register_ops = &qed_register_iscsi_ops, 1436 .start = &qed_iscsi_start, 1437 .stop = &qed_iscsi_stop, 1438 .acquire_conn = &qed_iscsi_acquire_conn, 1439 .release_conn = &qed_iscsi_release_conn, 1440 .offload_conn = &qed_iscsi_offload_conn, 1441 .update_conn = &qed_iscsi_update_conn, 1442 .destroy_conn = &qed_iscsi_destroy_conn, 1443 .clear_sq = &qed_iscsi_clear_conn_sq, 1444 .get_stats = &qed_iscsi_stats, 1445 .change_mac = &qed_iscsi_change_mac, 1446 }; 1447 1448 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1449 { 1450 return &qed_iscsi_ops_pass; 1451 } 1452 EXPORT_SYMBOL(qed_get_iscsi_ops); 1453 1454 void qed_put_iscsi_ops(void) 1455 { 1456 } 1457 EXPORT_SYMBOL(qed_put_iscsi_ops); 1458