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/version.h> 48 #include <linux/workqueue.h> 49 #include <linux/errno.h> 50 #include <linux/list.h> 51 #include <linux/spinlock.h> 52 #include <linux/qed/qed_iscsi_if.h> 53 #include "qed.h" 54 #include "qed_cxt.h" 55 #include "qed_dev_api.h" 56 #include "qed_hsi.h" 57 #include "qed_hw.h" 58 #include "qed_int.h" 59 #include "qed_iscsi.h" 60 #include "qed_ll2.h" 61 #include "qed_mcp.h" 62 #include "qed_sp.h" 63 #include "qed_sriov.h" 64 #include "qed_reg_addr.h" 65 66 struct qed_iscsi_conn { 67 struct list_head list_entry; 68 bool free_on_delete; 69 70 u16 conn_id; 71 u32 icid; 72 u32 fw_cid; 73 74 u8 layer_code; 75 u8 offl_flags; 76 u8 connect_mode; 77 u32 initial_ack; 78 dma_addr_t sq_pbl_addr; 79 struct qed_chain r2tq; 80 struct qed_chain xhq; 81 struct qed_chain uhq; 82 83 struct tcp_upload_params *tcp_upload_params_virt_addr; 84 dma_addr_t tcp_upload_params_phys_addr; 85 struct scsi_terminate_extra_params *queue_cnts_virt_addr; 86 dma_addr_t queue_cnts_phys_addr; 87 dma_addr_t syn_phy_addr; 88 89 u16 syn_ip_payload_length; 90 u8 local_mac[6]; 91 u8 remote_mac[6]; 92 u16 vlan_id; 93 u8 tcp_flags; 94 u8 ip_version; 95 u32 remote_ip[4]; 96 u32 local_ip[4]; 97 u8 ka_max_probe_cnt; 98 u8 dup_ack_theshold; 99 u32 rcv_next; 100 u32 snd_una; 101 u32 snd_next; 102 u32 snd_max; 103 u32 snd_wnd; 104 u32 rcv_wnd; 105 u32 snd_wl1; 106 u32 cwnd; 107 u32 ss_thresh; 108 u16 srtt; 109 u16 rtt_var; 110 u32 ts_time; 111 u32 ts_recent; 112 u32 ts_recent_age; 113 u32 total_rt; 114 u32 ka_timeout_delta; 115 u32 rt_timeout_delta; 116 u8 dup_ack_cnt; 117 u8 snd_wnd_probe_cnt; 118 u8 ka_probe_cnt; 119 u8 rt_cnt; 120 u32 flow_label; 121 u32 ka_timeout; 122 u32 ka_interval; 123 u32 max_rt_time; 124 u32 initial_rcv_wnd; 125 u8 ttl; 126 u8 tos_or_tc; 127 u16 remote_port; 128 u16 local_port; 129 u16 mss; 130 u8 snd_wnd_scale; 131 u8 rcv_wnd_scale; 132 u32 ts_ticks_per_second; 133 u16 da_timeout_value; 134 u8 ack_frequency; 135 136 u8 update_flag; 137 u8 default_cq; 138 u32 max_seq_size; 139 u32 max_recv_pdu_length; 140 u32 max_send_pdu_length; 141 u32 first_seq_length; 142 u32 exp_stat_sn; 143 u32 stat_sn; 144 u16 physical_q0; 145 u16 physical_q1; 146 u8 abortive_dsconnect; 147 }; 148 149 static int 150 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 151 enum spq_mode comp_mode, 152 struct qed_spq_comp_cb *p_comp_addr, 153 void *event_context, iscsi_event_cb_t async_event_cb) 154 { 155 struct iscsi_init_ramrod_params *p_ramrod = NULL; 156 struct scsi_init_func_queues *p_queue = NULL; 157 struct qed_iscsi_pf_params *p_params = NULL; 158 struct iscsi_spe_func_init *p_init = NULL; 159 struct qed_spq_entry *p_ent = NULL; 160 struct qed_sp_init_data init_data; 161 int rc = 0; 162 u32 dval; 163 u16 val; 164 u8 i; 165 166 /* Get SPQ entry */ 167 memset(&init_data, 0, sizeof(init_data)); 168 init_data.cid = qed_spq_get_cid(p_hwfn); 169 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 170 init_data.comp_mode = comp_mode; 171 init_data.p_comp_data = p_comp_addr; 172 173 rc = qed_sp_init_request(p_hwfn, &p_ent, 174 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 175 PROTOCOLID_ISCSI, &init_data); 176 if (rc) 177 return rc; 178 179 p_ramrod = &p_ent->ramrod.iscsi_init; 180 p_init = &p_ramrod->iscsi_init_spe; 181 p_params = &p_hwfn->pf_params.iscsi_pf_params; 182 p_queue = &p_init->q_params; 183 184 SET_FIELD(p_init->hdr.flags, 185 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); 186 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; 187 188 val = p_params->half_way_close_timeout; 189 p_init->half_way_close_timeout = cpu_to_le16(val); 190 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 191 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 192 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 193 p_init->func_params.log_page_size = p_params->log_page_size; 194 val = p_params->num_tasks; 195 p_init->func_params.num_tasks = cpu_to_le16(val); 196 p_init->debug_mode.flags = p_params->debug_mode; 197 198 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 199 p_params->glbl_q_params_addr); 200 201 val = p_params->cq_num_entries; 202 p_queue->cq_num_entries = cpu_to_le16(val); 203 val = p_params->cmdq_num_entries; 204 p_queue->cmdq_num_entries = cpu_to_le16(val); 205 p_queue->num_queues = p_params->num_queues; 206 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 207 p_queue->queue_relative_offset = (u8)dval; 208 p_queue->cq_sb_pi = p_params->gl_rq_pi; 209 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 210 211 for (i = 0; i < p_params->num_queues; i++) { 212 val = p_hwfn->sbs_info[i]->igu_sb_id; 213 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 214 } 215 216 p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id); 217 218 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 219 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 220 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 221 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 222 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 223 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 224 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 225 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 226 227 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 228 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 229 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 230 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 231 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 232 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 233 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 234 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 235 val = p_params->rq_buffer_size; 236 p_queue->rq_buffer_size = cpu_to_le16(val); 237 if (p_params->is_target) { 238 SET_FIELD(p_queue->q_validity, 239 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 240 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 241 SET_FIELD(p_queue->q_validity, 242 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 243 SET_FIELD(p_queue->q_validity, 244 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 245 } else { 246 SET_FIELD(p_queue->q_validity, 247 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 248 } 249 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 250 val = p_params->tx_sws_timer; 251 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 252 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt; 253 254 p_hwfn->p_iscsi_info->event_context = event_context; 255 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 256 257 return qed_spq_post(p_hwfn, p_ent, NULL); 258 } 259 260 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 261 struct qed_iscsi_conn *p_conn, 262 enum spq_mode comp_mode, 263 struct qed_spq_comp_cb *p_comp_addr) 264 { 265 struct iscsi_spe_conn_offload *p_ramrod = NULL; 266 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 267 struct tcp_offload_params *p_tcp = NULL; 268 struct qed_spq_entry *p_ent = NULL; 269 struct qed_sp_init_data init_data; 270 union qed_qm_pq_params pq_params; 271 u16 pq0_id = 0, pq1_id = 0; 272 dma_addr_t r2tq_pbl_addr; 273 dma_addr_t xhq_pbl_addr; 274 dma_addr_t uhq_pbl_addr; 275 int rc = 0; 276 u32 dval; 277 u16 wval; 278 u8 i; 279 u16 *p; 280 281 /* Get SPQ entry */ 282 memset(&init_data, 0, sizeof(init_data)); 283 init_data.cid = p_conn->icid; 284 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 285 init_data.comp_mode = comp_mode; 286 init_data.p_comp_data = p_comp_addr; 287 288 rc = qed_sp_init_request(p_hwfn, &p_ent, 289 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 290 PROTOCOLID_ISCSI, &init_data); 291 if (rc) 292 return rc; 293 294 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 295 296 /* Transmission PQ is the first of the PF */ 297 memset(&pq_params, 0, sizeof(pq_params)); 298 pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params); 299 p_conn->physical_q0 = cpu_to_le16(pq0_id); 300 p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id); 301 302 /* iSCSI Pure-ACK PQ */ 303 pq_params.iscsi.q_idx = 1; 304 pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params); 305 p_conn->physical_q1 = cpu_to_le16(pq1_id); 306 p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id); 307 308 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; 309 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, 310 p_conn->layer_code); 311 312 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 313 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 314 315 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 316 317 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 318 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 319 320 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 321 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 322 323 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 324 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 325 326 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 327 p_ramrod->iscsi.flags = p_conn->offl_flags; 328 p_ramrod->iscsi.default_cq = p_conn->default_cq; 329 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 330 331 if (!GET_FIELD(p_ramrod->iscsi.flags, 332 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 333 p_tcp = &p_ramrod->tcp; 334 335 p = (u16 *)p_conn->local_mac; 336 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 337 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 338 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 339 340 p = (u16 *)p_conn->remote_mac; 341 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 342 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 343 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 344 345 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 346 347 p_tcp->flags = p_conn->tcp_flags; 348 p_tcp->ip_version = p_conn->ip_version; 349 for (i = 0; i < 4; i++) { 350 dval = p_conn->remote_ip[i]; 351 p_tcp->remote_ip[i] = cpu_to_le32(dval); 352 dval = p_conn->local_ip[i]; 353 p_tcp->local_ip[i] = cpu_to_le32(dval); 354 } 355 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 356 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 357 358 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 359 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 360 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 361 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 362 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 363 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 364 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 365 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 366 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 367 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 368 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 369 p_tcp->ts_time = cpu_to_le32(p_conn->ts_time); 370 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 371 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 372 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 373 dval = p_conn->ka_timeout_delta; 374 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 375 dval = p_conn->rt_timeout_delta; 376 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 377 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 378 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 379 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 380 p_tcp->rt_cnt = p_conn->rt_cnt; 381 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 382 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 383 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 384 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 385 dval = p_conn->initial_rcv_wnd; 386 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 387 p_tcp->ttl = p_conn->ttl; 388 p_tcp->tos_or_tc = p_conn->tos_or_tc; 389 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 390 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 391 p_tcp->mss = cpu_to_le16(p_conn->mss); 392 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 393 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 394 dval = p_conn->ts_ticks_per_second; 395 p_tcp->ts_ticks_per_second = cpu_to_le32(dval); 396 wval = p_conn->da_timeout_value; 397 p_tcp->da_timeout_value = cpu_to_le16(wval); 398 p_tcp->ack_frequency = p_conn->ack_frequency; 399 p_tcp->connect_mode = p_conn->connect_mode; 400 } else { 401 p_tcp2 = 402 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 403 404 p = (u16 *)p_conn->local_mac; 405 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 406 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 407 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 408 409 p = (u16 *)p_conn->remote_mac; 410 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 411 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 412 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 413 414 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 415 p_tcp2->flags = p_conn->tcp_flags; 416 417 p_tcp2->ip_version = p_conn->ip_version; 418 for (i = 0; i < 4; i++) { 419 dval = p_conn->remote_ip[i]; 420 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 421 dval = p_conn->local_ip[i]; 422 p_tcp2->local_ip[i] = cpu_to_le32(dval); 423 } 424 425 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 426 p_tcp2->ttl = p_conn->ttl; 427 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 428 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 429 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 430 p_tcp2->mss = cpu_to_le16(p_conn->mss); 431 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 432 p_tcp2->connect_mode = p_conn->connect_mode; 433 wval = p_conn->syn_ip_payload_length; 434 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 435 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 436 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 437 } 438 439 return qed_spq_post(p_hwfn, p_ent, NULL); 440 } 441 442 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 443 struct qed_iscsi_conn *p_conn, 444 enum spq_mode comp_mode, 445 struct qed_spq_comp_cb *p_comp_addr) 446 { 447 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 448 struct qed_spq_entry *p_ent = NULL; 449 struct qed_sp_init_data init_data; 450 int rc = -EINVAL; 451 u32 dval; 452 453 /* Get SPQ entry */ 454 memset(&init_data, 0, sizeof(init_data)); 455 init_data.cid = p_conn->icid; 456 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 457 init_data.comp_mode = comp_mode; 458 init_data.p_comp_data = p_comp_addr; 459 460 rc = qed_sp_init_request(p_hwfn, &p_ent, 461 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 462 PROTOCOLID_ISCSI, &init_data); 463 if (rc) 464 return rc; 465 466 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 467 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; 468 SET_FIELD(p_ramrod->hdr.flags, 469 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 470 471 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 472 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 473 p_ramrod->flags = p_conn->update_flag; 474 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 475 dval = p_conn->max_recv_pdu_length; 476 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 477 dval = p_conn->max_send_pdu_length; 478 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 479 dval = p_conn->first_seq_length; 480 p_ramrod->first_seq_length = cpu_to_le32(dval); 481 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 482 483 return qed_spq_post(p_hwfn, p_ent, NULL); 484 } 485 486 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 487 struct qed_iscsi_conn *p_conn, 488 enum spq_mode comp_mode, 489 struct qed_spq_comp_cb *p_comp_addr) 490 { 491 struct iscsi_spe_conn_termination *p_ramrod = NULL; 492 struct qed_spq_entry *p_ent = NULL; 493 struct qed_sp_init_data init_data; 494 int rc = -EINVAL; 495 496 /* Get SPQ entry */ 497 memset(&init_data, 0, sizeof(init_data)); 498 init_data.cid = p_conn->icid; 499 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 500 init_data.comp_mode = comp_mode; 501 init_data.p_comp_data = p_comp_addr; 502 503 rc = qed_sp_init_request(p_hwfn, &p_ent, 504 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 505 PROTOCOLID_ISCSI, &init_data); 506 if (rc) 507 return rc; 508 509 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 510 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; 511 SET_FIELD(p_ramrod->hdr.flags, 512 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 513 514 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 515 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 516 p_ramrod->abortive = p_conn->abortive_dsconnect; 517 518 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 519 p_conn->tcp_upload_params_phys_addr); 520 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 521 522 return qed_spq_post(p_hwfn, p_ent, NULL); 523 } 524 525 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 526 struct qed_iscsi_conn *p_conn, 527 enum spq_mode comp_mode, 528 struct qed_spq_comp_cb *p_comp_addr) 529 { 530 struct iscsi_slow_path_hdr *p_ramrod = NULL; 531 struct qed_spq_entry *p_ent = NULL; 532 struct qed_sp_init_data init_data; 533 int rc = -EINVAL; 534 535 /* Get SPQ entry */ 536 memset(&init_data, 0, sizeof(init_data)); 537 init_data.cid = p_conn->icid; 538 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 539 init_data.comp_mode = comp_mode; 540 init_data.p_comp_data = p_comp_addr; 541 542 rc = qed_sp_init_request(p_hwfn, &p_ent, 543 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 544 PROTOCOLID_ISCSI, &init_data); 545 if (rc) 546 return rc; 547 548 p_ramrod = &p_ent->ramrod.iscsi_empty; 549 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; 550 SET_FIELD(p_ramrod->flags, 551 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 552 553 return qed_spq_post(p_hwfn, p_ent, NULL); 554 } 555 556 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 557 enum spq_mode comp_mode, 558 struct qed_spq_comp_cb *p_comp_addr) 559 { 560 struct iscsi_spe_func_dstry *p_ramrod = NULL; 561 struct qed_spq_entry *p_ent = NULL; 562 struct qed_sp_init_data init_data; 563 int rc = 0; 564 565 /* Get SPQ entry */ 566 memset(&init_data, 0, sizeof(init_data)); 567 init_data.cid = qed_spq_get_cid(p_hwfn); 568 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 569 init_data.comp_mode = comp_mode; 570 init_data.p_comp_data = p_comp_addr; 571 572 rc = qed_sp_init_request(p_hwfn, &p_ent, 573 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 574 PROTOCOLID_ISCSI, &init_data); 575 if (rc) 576 return rc; 577 578 p_ramrod = &p_ent->ramrod.iscsi_destroy; 579 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; 580 581 return qed_spq_post(p_hwfn, p_ent, NULL); 582 } 583 584 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 585 { 586 return (u8 __iomem *)p_hwfn->doorbells + 587 qed_db_addr(cid, DQ_DEMS_LEGACY); 588 } 589 590 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 591 u8 bdq_id) 592 { 593 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id); 594 595 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM + 596 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id, 597 bdq_id); 598 } 599 600 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 601 u8 bdq_id) 602 { 603 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id); 604 605 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM + 606 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id, 607 bdq_id); 608 } 609 610 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn, 611 struct qed_iscsi_conn *p_conn) 612 { 613 if (!p_conn->queue_cnts_virt_addr) 614 goto nomem; 615 memset(p_conn->queue_cnts_virt_addr, 0, 616 sizeof(*p_conn->queue_cnts_virt_addr)); 617 618 if (!p_conn->tcp_upload_params_virt_addr) 619 goto nomem; 620 memset(p_conn->tcp_upload_params_virt_addr, 0, 621 sizeof(*p_conn->tcp_upload_params_virt_addr)); 622 623 if (!p_conn->r2tq.p_virt_addr) 624 goto nomem; 625 qed_chain_pbl_zero_mem(&p_conn->r2tq); 626 627 if (!p_conn->uhq.p_virt_addr) 628 goto nomem; 629 qed_chain_pbl_zero_mem(&p_conn->uhq); 630 631 if (!p_conn->xhq.p_virt_addr) 632 goto nomem; 633 qed_chain_pbl_zero_mem(&p_conn->xhq); 634 635 return 0; 636 nomem: 637 return -ENOMEM; 638 } 639 640 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 641 struct qed_iscsi_conn **p_out_conn) 642 { 643 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 644 struct scsi_terminate_extra_params *p_q_cnts = NULL; 645 struct qed_iscsi_pf_params *p_params = NULL; 646 struct tcp_upload_params *p_tcp = NULL; 647 struct qed_iscsi_conn *p_conn = NULL; 648 int rc = 0; 649 650 /* Try finding a free connection that can be used */ 651 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 652 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 653 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 654 struct qed_iscsi_conn, list_entry); 655 if (p_conn) { 656 list_del(&p_conn->list_entry); 657 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 658 *p_out_conn = p_conn; 659 return 0; 660 } 661 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 662 663 /* Need to allocate a new connection */ 664 p_params = &p_hwfn->pf_params.iscsi_pf_params; 665 666 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 667 if (!p_conn) 668 return -ENOMEM; 669 670 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 671 sizeof(*p_q_cnts), 672 &p_conn->queue_cnts_phys_addr, 673 GFP_KERNEL); 674 if (!p_q_cnts) 675 goto nomem_queue_cnts_param; 676 p_conn->queue_cnts_virt_addr = p_q_cnts; 677 678 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 679 sizeof(*p_tcp), 680 &p_conn->tcp_upload_params_phys_addr, 681 GFP_KERNEL); 682 if (!p_tcp) 683 goto nomem_upload_param; 684 p_conn->tcp_upload_params_virt_addr = p_tcp; 685 686 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 687 QED_CHAIN_PAGE_SIZE / 0x80; 688 rc = qed_chain_alloc(p_hwfn->cdev, 689 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 690 QED_CHAIN_MODE_PBL, 691 QED_CHAIN_CNT_TYPE_U16, 692 r2tq_num_elements, 0x80, &p_conn->r2tq); 693 if (rc) 694 goto nomem_r2tq; 695 696 uhq_num_elements = p_params->num_uhq_pages_in_ring * 697 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 698 rc = qed_chain_alloc(p_hwfn->cdev, 699 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 700 QED_CHAIN_MODE_PBL, 701 QED_CHAIN_CNT_TYPE_U16, 702 uhq_num_elements, 703 sizeof(struct iscsi_uhqe), &p_conn->uhq); 704 if (rc) 705 goto nomem_uhq; 706 707 xhq_num_elements = uhq_num_elements; 708 rc = qed_chain_alloc(p_hwfn->cdev, 709 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 710 QED_CHAIN_MODE_PBL, 711 QED_CHAIN_CNT_TYPE_U16, 712 xhq_num_elements, 713 sizeof(struct iscsi_xhqe), &p_conn->xhq); 714 if (rc) 715 goto nomem; 716 717 p_conn->free_on_delete = true; 718 *p_out_conn = p_conn; 719 return 0; 720 721 nomem: 722 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 723 nomem_uhq: 724 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 725 nomem_r2tq: 726 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 727 sizeof(struct tcp_upload_params), 728 p_conn->tcp_upload_params_virt_addr, 729 p_conn->tcp_upload_params_phys_addr); 730 nomem_upload_param: 731 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 732 sizeof(struct scsi_terminate_extra_params), 733 p_conn->queue_cnts_virt_addr, 734 p_conn->queue_cnts_phys_addr); 735 nomem_queue_cnts_param: 736 kfree(p_conn); 737 738 return -ENOMEM; 739 } 740 741 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 742 struct qed_iscsi_conn *p_in_conn, 743 struct qed_iscsi_conn **p_out_conn) 744 { 745 struct qed_iscsi_conn *p_conn = NULL; 746 int rc = 0; 747 u32 icid; 748 749 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 750 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 751 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 752 if (rc) 753 return rc; 754 755 /* Use input connection or allocate a new one */ 756 if (p_in_conn) 757 p_conn = p_in_conn; 758 else 759 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 760 761 if (!rc) 762 rc = qed_iscsi_setup_connection(p_hwfn, p_conn); 763 764 if (rc) { 765 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 766 qed_cxt_release_cid(p_hwfn, icid); 767 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 768 return rc; 769 } 770 771 p_conn->icid = icid; 772 p_conn->conn_id = (u16)icid; 773 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 774 775 *p_out_conn = p_conn; 776 777 return rc; 778 } 779 780 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 781 struct qed_iscsi_conn *p_conn) 782 { 783 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 784 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 785 qed_cxt_release_cid(p_hwfn, p_conn->icid); 786 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 787 } 788 789 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 790 { 791 struct qed_iscsi_info *p_iscsi_info; 792 793 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 794 if (!p_iscsi_info) 795 return NULL; 796 797 INIT_LIST_HEAD(&p_iscsi_info->free_list); 798 return p_iscsi_info; 799 } 800 801 void qed_iscsi_setup(struct qed_hwfn *p_hwfn, 802 struct qed_iscsi_info *p_iscsi_info) 803 { 804 spin_lock_init(&p_iscsi_info->lock); 805 } 806 807 void qed_iscsi_free(struct qed_hwfn *p_hwfn, 808 struct qed_iscsi_info *p_iscsi_info) 809 { 810 kfree(p_iscsi_info); 811 } 812 813 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 814 struct qed_ptt *p_ptt, 815 struct qed_iscsi_stats *p_stats) 816 { 817 struct tstorm_iscsi_stats_drv tstats; 818 u32 tstats_addr; 819 820 memset(&tstats, 0, sizeof(tstats)); 821 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 822 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 823 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 824 825 p_stats->iscsi_rx_bytes_cnt = 826 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 827 p_stats->iscsi_rx_packet_cnt = 828 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 829 p_stats->iscsi_cmdq_threshold_cnt = 830 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 831 p_stats->iscsi_rq_threshold_cnt = 832 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 833 p_stats->iscsi_immq_threshold_cnt = 834 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 835 } 836 837 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 838 struct qed_ptt *p_ptt, 839 struct qed_iscsi_stats *p_stats) 840 { 841 struct mstorm_iscsi_stats_drv mstats; 842 u32 mstats_addr; 843 844 memset(&mstats, 0, sizeof(mstats)); 845 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 846 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 847 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 848 849 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 850 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 851 } 852 853 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 854 struct qed_ptt *p_ptt, 855 struct qed_iscsi_stats *p_stats) 856 { 857 struct ustorm_iscsi_stats_drv ustats; 858 u32 ustats_addr; 859 860 memset(&ustats, 0, sizeof(ustats)); 861 ustats_addr = BAR0_MAP_REG_USDM_RAM + 862 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 863 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 864 865 p_stats->iscsi_rx_data_pdu_cnt = 866 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 867 p_stats->iscsi_rx_r2t_pdu_cnt = 868 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 869 p_stats->iscsi_rx_total_pdu_cnt = 870 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 871 } 872 873 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 874 struct qed_ptt *p_ptt, 875 struct qed_iscsi_stats *p_stats) 876 { 877 struct xstorm_iscsi_stats_drv xstats; 878 u32 xstats_addr; 879 880 memset(&xstats, 0, sizeof(xstats)); 881 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 882 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 883 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 884 885 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 886 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 887 p_stats->iscsi_tx_fast_retransmit_event_cnt = 888 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 889 } 890 891 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 892 struct qed_ptt *p_ptt, 893 struct qed_iscsi_stats *p_stats) 894 { 895 struct ystorm_iscsi_stats_drv ystats; 896 u32 ystats_addr; 897 898 memset(&ystats, 0, sizeof(ystats)); 899 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 900 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 901 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 902 903 p_stats->iscsi_tx_data_pdu_cnt = 904 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 905 p_stats->iscsi_tx_r2t_pdu_cnt = 906 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 907 p_stats->iscsi_tx_total_pdu_cnt = 908 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 909 } 910 911 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 912 struct qed_ptt *p_ptt, 913 struct qed_iscsi_stats *p_stats) 914 { 915 struct pstorm_iscsi_stats_drv pstats; 916 u32 pstats_addr; 917 918 memset(&pstats, 0, sizeof(pstats)); 919 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 920 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 921 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 922 923 p_stats->iscsi_tx_bytes_cnt = 924 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 925 p_stats->iscsi_tx_packet_cnt = 926 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 927 } 928 929 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 930 struct qed_iscsi_stats *stats) 931 { 932 struct qed_ptt *p_ptt; 933 934 memset(stats, 0, sizeof(*stats)); 935 936 p_ptt = qed_ptt_acquire(p_hwfn); 937 if (!p_ptt) { 938 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 939 return -EAGAIN; 940 } 941 942 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 943 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 944 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 945 946 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 947 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 948 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 949 950 qed_ptt_release(p_hwfn, p_ptt); 951 952 return 0; 953 } 954 955 struct qed_hash_iscsi_con { 956 struct hlist_node node; 957 struct qed_iscsi_conn *con; 958 }; 959 960 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 961 struct qed_dev_iscsi_info *info) 962 { 963 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 964 965 int rc; 966 967 memset(info, 0, sizeof(*info)); 968 rc = qed_fill_dev_info(cdev, &info->common); 969 970 info->primary_dbq_rq_addr = 971 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 972 info->secondary_bdq_rq_addr = 973 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 974 975 return rc; 976 } 977 978 static void qed_register_iscsi_ops(struct qed_dev *cdev, 979 struct qed_iscsi_cb_ops *ops, void *cookie) 980 { 981 cdev->protocol_ops.iscsi = ops; 982 cdev->ops_cookie = cookie; 983 } 984 985 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 986 u32 handle) 987 { 988 struct qed_hash_iscsi_con *hash_con = NULL; 989 990 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 991 return NULL; 992 993 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 994 if (hash_con->con->icid == handle) 995 break; 996 } 997 998 if (!hash_con || (hash_con->con->icid != handle)) 999 return NULL; 1000 1001 return hash_con; 1002 } 1003 1004 static int qed_iscsi_stop(struct qed_dev *cdev) 1005 { 1006 int rc; 1007 1008 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1009 DP_NOTICE(cdev, "iscsi already stopped\n"); 1010 return 0; 1011 } 1012 1013 if (!hash_empty(cdev->connections)) { 1014 DP_NOTICE(cdev, 1015 "Can't stop iscsi - not all connections were returned\n"); 1016 return -EINVAL; 1017 } 1018 1019 /* Stop the iscsi */ 1020 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev), 1021 QED_SPQ_MODE_EBLOCK, NULL); 1022 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1023 1024 return rc; 1025 } 1026 1027 static int qed_iscsi_start(struct qed_dev *cdev, 1028 struct qed_iscsi_tid *tasks, 1029 void *event_context, 1030 iscsi_event_cb_t async_event_cb) 1031 { 1032 int rc; 1033 struct qed_tid_mem *tid_info; 1034 1035 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1036 DP_NOTICE(cdev, "iscsi already started;\n"); 1037 return 0; 1038 } 1039 1040 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev), 1041 QED_SPQ_MODE_EBLOCK, NULL, event_context, 1042 async_event_cb); 1043 if (rc) { 1044 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1045 return rc; 1046 } 1047 1048 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1049 hash_init(cdev->connections); 1050 1051 if (!tasks) 1052 return 0; 1053 1054 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1055 1056 if (!tid_info) { 1057 qed_iscsi_stop(cdev); 1058 return -ENOMEM; 1059 } 1060 1061 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev), 1062 tid_info); 1063 if (rc) { 1064 DP_NOTICE(cdev, "Failed to gather task information\n"); 1065 qed_iscsi_stop(cdev); 1066 kfree(tid_info); 1067 return rc; 1068 } 1069 1070 /* Fill task information */ 1071 tasks->size = tid_info->tid_size; 1072 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1073 memcpy(tasks->blocks, tid_info->blocks, 1074 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1075 1076 kfree(tid_info); 1077 1078 return 0; 1079 } 1080 1081 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1082 u32 *handle, 1083 u32 *fw_cid, void __iomem **p_doorbell) 1084 { 1085 struct qed_hash_iscsi_con *hash_con; 1086 int rc; 1087 1088 /* Allocate a hashed connection */ 1089 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1090 if (!hash_con) 1091 return -ENOMEM; 1092 1093 /* Acquire the connection */ 1094 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL, 1095 &hash_con->con); 1096 if (rc) { 1097 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1098 kfree(hash_con); 1099 return rc; 1100 } 1101 1102 /* Added the connection to hash table */ 1103 *handle = hash_con->con->icid; 1104 *fw_cid = hash_con->con->fw_cid; 1105 hash_add(cdev->connections, &hash_con->node, *handle); 1106 1107 if (p_doorbell) 1108 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev), 1109 *handle); 1110 1111 return 0; 1112 } 1113 1114 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1115 { 1116 struct qed_hash_iscsi_con *hash_con; 1117 1118 hash_con = qed_iscsi_get_hash(cdev, handle); 1119 if (!hash_con) { 1120 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1121 handle); 1122 return -EINVAL; 1123 } 1124 1125 hlist_del(&hash_con->node); 1126 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con); 1127 kfree(hash_con); 1128 1129 return 0; 1130 } 1131 1132 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1133 u32 handle, 1134 struct qed_iscsi_params_offload *conn_info) 1135 { 1136 struct qed_hash_iscsi_con *hash_con; 1137 struct qed_iscsi_conn *con; 1138 1139 hash_con = qed_iscsi_get_hash(cdev, handle); 1140 if (!hash_con) { 1141 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1142 handle); 1143 return -EINVAL; 1144 } 1145 1146 /* Update the connection with information from the params */ 1147 con = hash_con->con; 1148 1149 ether_addr_copy(con->local_mac, conn_info->src.mac); 1150 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1151 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1152 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1153 con->local_port = conn_info->src.port; 1154 con->remote_port = conn_info->dst.port; 1155 1156 con->layer_code = conn_info->layer_code; 1157 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1158 con->initial_ack = conn_info->initial_ack; 1159 con->vlan_id = conn_info->vlan_id; 1160 con->tcp_flags = conn_info->tcp_flags; 1161 con->ip_version = conn_info->ip_version; 1162 con->default_cq = conn_info->default_cq; 1163 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1164 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1165 con->rcv_next = conn_info->rcv_next; 1166 con->snd_una = conn_info->snd_una; 1167 con->snd_next = conn_info->snd_next; 1168 con->snd_max = conn_info->snd_max; 1169 con->snd_wnd = conn_info->snd_wnd; 1170 con->rcv_wnd = conn_info->rcv_wnd; 1171 con->snd_wl1 = conn_info->snd_wl1; 1172 con->cwnd = conn_info->cwnd; 1173 con->ss_thresh = conn_info->ss_thresh; 1174 con->srtt = conn_info->srtt; 1175 con->rtt_var = conn_info->rtt_var; 1176 con->ts_time = conn_info->ts_time; 1177 con->ts_recent = conn_info->ts_recent; 1178 con->ts_recent_age = conn_info->ts_recent_age; 1179 con->total_rt = conn_info->total_rt; 1180 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1181 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1182 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1183 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1184 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1185 con->rt_cnt = conn_info->rt_cnt; 1186 con->flow_label = conn_info->flow_label; 1187 con->ka_timeout = conn_info->ka_timeout; 1188 con->ka_interval = conn_info->ka_interval; 1189 con->max_rt_time = conn_info->max_rt_time; 1190 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1191 con->ttl = conn_info->ttl; 1192 con->tos_or_tc = conn_info->tos_or_tc; 1193 con->remote_port = conn_info->remote_port; 1194 con->local_port = conn_info->local_port; 1195 con->mss = conn_info->mss; 1196 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1197 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1198 con->ts_ticks_per_second = conn_info->ts_ticks_per_second; 1199 con->da_timeout_value = conn_info->da_timeout_value; 1200 con->ack_frequency = conn_info->ack_frequency; 1201 1202 /* Set default values on other connection fields */ 1203 con->offl_flags = 0x1; 1204 1205 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con, 1206 QED_SPQ_MODE_EBLOCK, NULL); 1207 } 1208 1209 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1210 u32 handle, 1211 struct qed_iscsi_params_update *conn_info) 1212 { 1213 struct qed_hash_iscsi_con *hash_con; 1214 struct qed_iscsi_conn *con; 1215 1216 hash_con = qed_iscsi_get_hash(cdev, handle); 1217 if (!hash_con) { 1218 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1219 handle); 1220 return -EINVAL; 1221 } 1222 1223 /* Update the connection with information from the params */ 1224 con = hash_con->con; 1225 con->update_flag = conn_info->update_flag; 1226 con->max_seq_size = conn_info->max_seq_size; 1227 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1228 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1229 con->first_seq_length = conn_info->first_seq_length; 1230 con->exp_stat_sn = conn_info->exp_stat_sn; 1231 1232 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con, 1233 QED_SPQ_MODE_EBLOCK, NULL); 1234 } 1235 1236 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1237 { 1238 struct qed_hash_iscsi_con *hash_con; 1239 1240 hash_con = qed_iscsi_get_hash(cdev, handle); 1241 if (!hash_con) { 1242 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1243 handle); 1244 return -EINVAL; 1245 } 1246 1247 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev), 1248 hash_con->con, 1249 QED_SPQ_MODE_EBLOCK, NULL); 1250 } 1251 1252 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1253 u32 handle, u8 abrt_conn) 1254 { 1255 struct qed_hash_iscsi_con *hash_con; 1256 1257 hash_con = qed_iscsi_get_hash(cdev, handle); 1258 if (!hash_con) { 1259 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1260 handle); 1261 return -EINVAL; 1262 } 1263 1264 hash_con->con->abortive_dsconnect = abrt_conn; 1265 1266 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev), 1267 hash_con->con, 1268 QED_SPQ_MODE_EBLOCK, NULL); 1269 } 1270 1271 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1272 { 1273 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats); 1274 } 1275 1276 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1277 .common = &qed_common_ops_pass, 1278 .ll2 = &qed_ll2_ops_pass, 1279 .fill_dev_info = &qed_fill_iscsi_dev_info, 1280 .register_ops = &qed_register_iscsi_ops, 1281 .start = &qed_iscsi_start, 1282 .stop = &qed_iscsi_stop, 1283 .acquire_conn = &qed_iscsi_acquire_conn, 1284 .release_conn = &qed_iscsi_release_conn, 1285 .offload_conn = &qed_iscsi_offload_conn, 1286 .update_conn = &qed_iscsi_update_conn, 1287 .destroy_conn = &qed_iscsi_destroy_conn, 1288 .clear_sq = &qed_iscsi_clear_conn_sq, 1289 .get_stats = &qed_iscsi_stats, 1290 }; 1291 1292 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1293 { 1294 return &qed_iscsi_ops_pass; 1295 } 1296 EXPORT_SYMBOL(qed_get_iscsi_ops); 1297 1298 void qed_put_iscsi_ops(void) 1299 { 1300 } 1301 EXPORT_SYMBOL(qed_put_iscsi_ops); 1302