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->ooo_enable = p_params->ooo_enable; 194 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + 195 p_params->ll2_ooo_queue_id; 196 p_init->func_params.log_page_size = p_params->log_page_size; 197 val = p_params->num_tasks; 198 p_init->func_params.num_tasks = cpu_to_le16(val); 199 p_init->debug_mode.flags = p_params->debug_mode; 200 201 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 202 p_params->glbl_q_params_addr); 203 204 val = p_params->cq_num_entries; 205 p_queue->cq_num_entries = cpu_to_le16(val); 206 val = p_params->cmdq_num_entries; 207 p_queue->cmdq_num_entries = cpu_to_le16(val); 208 p_queue->num_queues = p_params->num_queues; 209 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 210 p_queue->queue_relative_offset = (u8)dval; 211 p_queue->cq_sb_pi = p_params->gl_rq_pi; 212 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 213 214 for (i = 0; i < p_params->num_queues; i++) { 215 val = p_hwfn->sbs_info[i]->igu_sb_id; 216 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 217 } 218 219 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ); 220 221 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 222 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 223 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 224 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 225 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 226 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 227 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 228 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 229 230 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 231 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 232 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 233 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 234 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 235 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 236 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 237 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 238 val = p_params->rq_buffer_size; 239 p_queue->rq_buffer_size = cpu_to_le16(val); 240 if (p_params->is_target) { 241 SET_FIELD(p_queue->q_validity, 242 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 243 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 244 SET_FIELD(p_queue->q_validity, 245 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 246 SET_FIELD(p_queue->q_validity, 247 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 248 } else { 249 SET_FIELD(p_queue->q_validity, 250 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 251 } 252 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 253 val = p_params->tx_sws_timer; 254 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 255 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt; 256 257 p_hwfn->p_iscsi_info->event_context = event_context; 258 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 259 260 return qed_spq_post(p_hwfn, p_ent, NULL); 261 } 262 263 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 264 struct qed_iscsi_conn *p_conn, 265 enum spq_mode comp_mode, 266 struct qed_spq_comp_cb *p_comp_addr) 267 { 268 struct iscsi_spe_conn_offload *p_ramrod = NULL; 269 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 270 struct tcp_offload_params *p_tcp = NULL; 271 struct qed_spq_entry *p_ent = NULL; 272 struct qed_sp_init_data init_data; 273 dma_addr_t r2tq_pbl_addr; 274 dma_addr_t xhq_pbl_addr; 275 dma_addr_t uhq_pbl_addr; 276 u16 physical_q; 277 int rc = 0; 278 u32 dval; 279 u16 wval; 280 u8 i; 281 u16 *p; 282 283 /* Get SPQ entry */ 284 memset(&init_data, 0, sizeof(init_data)); 285 init_data.cid = p_conn->icid; 286 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 287 init_data.comp_mode = comp_mode; 288 init_data.p_comp_data = p_comp_addr; 289 290 rc = qed_sp_init_request(p_hwfn, &p_ent, 291 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 292 PROTOCOLID_ISCSI, &init_data); 293 if (rc) 294 return rc; 295 296 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 297 298 /* Transmission PQ is the first of the PF */ 299 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 300 p_conn->physical_q0 = cpu_to_le16(physical_q); 301 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q); 302 303 /* iSCSI Pure-ACK PQ */ 304 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 305 p_conn->physical_q1 = cpu_to_le16(physical_q); 306 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q); 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 if (RESC_NUM(p_hwfn, QED_BDQ)) { 594 return (u8 __iomem *)p_hwfn->regview + 595 GTT_BAR0_MAP_REG_MSDM_RAM + 596 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 597 QED_BDQ), 598 bdq_id); 599 } else { 600 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 601 return NULL; 602 } 603 } 604 605 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 606 u8 bdq_id) 607 { 608 if (RESC_NUM(p_hwfn, QED_BDQ)) { 609 return (u8 __iomem *)p_hwfn->regview + 610 GTT_BAR0_MAP_REG_TSDM_RAM + 611 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn, 612 QED_BDQ), 613 bdq_id); 614 } else { 615 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n"); 616 return NULL; 617 } 618 } 619 620 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn, 621 struct qed_iscsi_conn *p_conn) 622 { 623 if (!p_conn->queue_cnts_virt_addr) 624 goto nomem; 625 memset(p_conn->queue_cnts_virt_addr, 0, 626 sizeof(*p_conn->queue_cnts_virt_addr)); 627 628 if (!p_conn->tcp_upload_params_virt_addr) 629 goto nomem; 630 memset(p_conn->tcp_upload_params_virt_addr, 0, 631 sizeof(*p_conn->tcp_upload_params_virt_addr)); 632 633 if (!p_conn->r2tq.p_virt_addr) 634 goto nomem; 635 qed_chain_pbl_zero_mem(&p_conn->r2tq); 636 637 if (!p_conn->uhq.p_virt_addr) 638 goto nomem; 639 qed_chain_pbl_zero_mem(&p_conn->uhq); 640 641 if (!p_conn->xhq.p_virt_addr) 642 goto nomem; 643 qed_chain_pbl_zero_mem(&p_conn->xhq); 644 645 return 0; 646 nomem: 647 return -ENOMEM; 648 } 649 650 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 651 struct qed_iscsi_conn **p_out_conn) 652 { 653 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 654 struct scsi_terminate_extra_params *p_q_cnts = NULL; 655 struct qed_iscsi_pf_params *p_params = NULL; 656 struct tcp_upload_params *p_tcp = NULL; 657 struct qed_iscsi_conn *p_conn = NULL; 658 int rc = 0; 659 660 /* Try finding a free connection that can be used */ 661 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 662 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 663 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 664 struct qed_iscsi_conn, list_entry); 665 if (p_conn) { 666 list_del(&p_conn->list_entry); 667 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 668 *p_out_conn = p_conn; 669 return 0; 670 } 671 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 672 673 /* Need to allocate a new connection */ 674 p_params = &p_hwfn->pf_params.iscsi_pf_params; 675 676 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 677 if (!p_conn) 678 return -ENOMEM; 679 680 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 681 sizeof(*p_q_cnts), 682 &p_conn->queue_cnts_phys_addr, 683 GFP_KERNEL); 684 if (!p_q_cnts) 685 goto nomem_queue_cnts_param; 686 p_conn->queue_cnts_virt_addr = p_q_cnts; 687 688 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 689 sizeof(*p_tcp), 690 &p_conn->tcp_upload_params_phys_addr, 691 GFP_KERNEL); 692 if (!p_tcp) 693 goto nomem_upload_param; 694 p_conn->tcp_upload_params_virt_addr = p_tcp; 695 696 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 697 QED_CHAIN_PAGE_SIZE / 0x80; 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 r2tq_num_elements, 0x80, &p_conn->r2tq); 703 if (rc) 704 goto nomem_r2tq; 705 706 uhq_num_elements = p_params->num_uhq_pages_in_ring * 707 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 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 uhq_num_elements, 713 sizeof(struct iscsi_uhqe), &p_conn->uhq); 714 if (rc) 715 goto nomem_uhq; 716 717 xhq_num_elements = uhq_num_elements; 718 rc = qed_chain_alloc(p_hwfn->cdev, 719 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 720 QED_CHAIN_MODE_PBL, 721 QED_CHAIN_CNT_TYPE_U16, 722 xhq_num_elements, 723 sizeof(struct iscsi_xhqe), &p_conn->xhq); 724 if (rc) 725 goto nomem; 726 727 p_conn->free_on_delete = true; 728 *p_out_conn = p_conn; 729 return 0; 730 731 nomem: 732 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 733 nomem_uhq: 734 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 735 nomem_r2tq: 736 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 737 sizeof(struct tcp_upload_params), 738 p_conn->tcp_upload_params_virt_addr, 739 p_conn->tcp_upload_params_phys_addr); 740 nomem_upload_param: 741 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 742 sizeof(struct scsi_terminate_extra_params), 743 p_conn->queue_cnts_virt_addr, 744 p_conn->queue_cnts_phys_addr); 745 nomem_queue_cnts_param: 746 kfree(p_conn); 747 748 return -ENOMEM; 749 } 750 751 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 752 struct qed_iscsi_conn *p_in_conn, 753 struct qed_iscsi_conn **p_out_conn) 754 { 755 struct qed_iscsi_conn *p_conn = NULL; 756 int rc = 0; 757 u32 icid; 758 759 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 760 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 761 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 762 if (rc) 763 return rc; 764 765 /* Use input connection or allocate a new one */ 766 if (p_in_conn) 767 p_conn = p_in_conn; 768 else 769 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 770 771 if (!rc) 772 rc = qed_iscsi_setup_connection(p_hwfn, p_conn); 773 774 if (rc) { 775 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 776 qed_cxt_release_cid(p_hwfn, icid); 777 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 778 return rc; 779 } 780 781 p_conn->icid = icid; 782 p_conn->conn_id = (u16)icid; 783 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 784 785 *p_out_conn = p_conn; 786 787 return rc; 788 } 789 790 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 791 struct qed_iscsi_conn *p_conn) 792 { 793 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 794 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 795 qed_cxt_release_cid(p_hwfn, p_conn->icid); 796 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 797 } 798 799 void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn, 800 struct qed_iscsi_conn *p_conn) 801 { 802 qed_chain_free(p_hwfn->cdev, &p_conn->xhq); 803 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 804 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 805 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 806 sizeof(struct tcp_upload_params), 807 p_conn->tcp_upload_params_virt_addr, 808 p_conn->tcp_upload_params_phys_addr); 809 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 810 sizeof(struct scsi_terminate_extra_params), 811 p_conn->queue_cnts_virt_addr, 812 p_conn->queue_cnts_phys_addr); 813 kfree(p_conn); 814 } 815 816 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 817 { 818 struct qed_iscsi_info *p_iscsi_info; 819 820 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 821 if (!p_iscsi_info) 822 return NULL; 823 824 INIT_LIST_HEAD(&p_iscsi_info->free_list); 825 return p_iscsi_info; 826 } 827 828 void qed_iscsi_setup(struct qed_hwfn *p_hwfn, 829 struct qed_iscsi_info *p_iscsi_info) 830 { 831 spin_lock_init(&p_iscsi_info->lock); 832 } 833 834 void qed_iscsi_free(struct qed_hwfn *p_hwfn, 835 struct qed_iscsi_info *p_iscsi_info) 836 { 837 struct qed_iscsi_conn *p_conn = NULL; 838 839 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) { 840 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 841 struct qed_iscsi_conn, list_entry); 842 if (p_conn) { 843 list_del(&p_conn->list_entry); 844 qed_iscsi_free_connection(p_hwfn, p_conn); 845 } 846 } 847 848 kfree(p_iscsi_info); 849 } 850 851 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 852 struct qed_ptt *p_ptt, 853 struct qed_iscsi_stats *p_stats) 854 { 855 struct tstorm_iscsi_stats_drv tstats; 856 u32 tstats_addr; 857 858 memset(&tstats, 0, sizeof(tstats)); 859 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 860 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 861 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 862 863 p_stats->iscsi_rx_bytes_cnt = 864 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 865 p_stats->iscsi_rx_packet_cnt = 866 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 867 p_stats->iscsi_cmdq_threshold_cnt = 868 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 869 p_stats->iscsi_rq_threshold_cnt = 870 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 871 p_stats->iscsi_immq_threshold_cnt = 872 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 873 } 874 875 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 876 struct qed_ptt *p_ptt, 877 struct qed_iscsi_stats *p_stats) 878 { 879 struct mstorm_iscsi_stats_drv mstats; 880 u32 mstats_addr; 881 882 memset(&mstats, 0, sizeof(mstats)); 883 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 884 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 885 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 886 887 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 888 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 889 } 890 891 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 892 struct qed_ptt *p_ptt, 893 struct qed_iscsi_stats *p_stats) 894 { 895 struct ustorm_iscsi_stats_drv ustats; 896 u32 ustats_addr; 897 898 memset(&ustats, 0, sizeof(ustats)); 899 ustats_addr = BAR0_MAP_REG_USDM_RAM + 900 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 901 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 902 903 p_stats->iscsi_rx_data_pdu_cnt = 904 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 905 p_stats->iscsi_rx_r2t_pdu_cnt = 906 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 907 p_stats->iscsi_rx_total_pdu_cnt = 908 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 909 } 910 911 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 912 struct qed_ptt *p_ptt, 913 struct qed_iscsi_stats *p_stats) 914 { 915 struct xstorm_iscsi_stats_drv xstats; 916 u32 xstats_addr; 917 918 memset(&xstats, 0, sizeof(xstats)); 919 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 920 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 921 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 922 923 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 924 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 925 p_stats->iscsi_tx_fast_retransmit_event_cnt = 926 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 927 } 928 929 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 930 struct qed_ptt *p_ptt, 931 struct qed_iscsi_stats *p_stats) 932 { 933 struct ystorm_iscsi_stats_drv ystats; 934 u32 ystats_addr; 935 936 memset(&ystats, 0, sizeof(ystats)); 937 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 938 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 939 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 940 941 p_stats->iscsi_tx_data_pdu_cnt = 942 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 943 p_stats->iscsi_tx_r2t_pdu_cnt = 944 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 945 p_stats->iscsi_tx_total_pdu_cnt = 946 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 947 } 948 949 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 950 struct qed_ptt *p_ptt, 951 struct qed_iscsi_stats *p_stats) 952 { 953 struct pstorm_iscsi_stats_drv pstats; 954 u32 pstats_addr; 955 956 memset(&pstats, 0, sizeof(pstats)); 957 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 958 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 959 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 960 961 p_stats->iscsi_tx_bytes_cnt = 962 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 963 p_stats->iscsi_tx_packet_cnt = 964 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 965 } 966 967 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 968 struct qed_iscsi_stats *stats) 969 { 970 struct qed_ptt *p_ptt; 971 972 memset(stats, 0, sizeof(*stats)); 973 974 p_ptt = qed_ptt_acquire(p_hwfn); 975 if (!p_ptt) { 976 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 977 return -EAGAIN; 978 } 979 980 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 981 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 982 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 983 984 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 985 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 986 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 987 988 qed_ptt_release(p_hwfn, p_ptt); 989 990 return 0; 991 } 992 993 struct qed_hash_iscsi_con { 994 struct hlist_node node; 995 struct qed_iscsi_conn *con; 996 }; 997 998 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 999 struct qed_dev_iscsi_info *info) 1000 { 1001 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 1002 1003 int rc; 1004 1005 memset(info, 0, sizeof(*info)); 1006 rc = qed_fill_dev_info(cdev, &info->common); 1007 1008 info->primary_dbq_rq_addr = 1009 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 1010 info->secondary_bdq_rq_addr = 1011 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 1012 1013 return rc; 1014 } 1015 1016 static void qed_register_iscsi_ops(struct qed_dev *cdev, 1017 struct qed_iscsi_cb_ops *ops, void *cookie) 1018 { 1019 cdev->protocol_ops.iscsi = ops; 1020 cdev->ops_cookie = cookie; 1021 } 1022 1023 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 1024 u32 handle) 1025 { 1026 struct qed_hash_iscsi_con *hash_con = NULL; 1027 1028 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 1029 return NULL; 1030 1031 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 1032 if (hash_con->con->icid == handle) 1033 break; 1034 } 1035 1036 if (!hash_con || (hash_con->con->icid != handle)) 1037 return NULL; 1038 1039 return hash_con; 1040 } 1041 1042 static int qed_iscsi_stop(struct qed_dev *cdev) 1043 { 1044 int rc; 1045 1046 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 1047 DP_NOTICE(cdev, "iscsi already stopped\n"); 1048 return 0; 1049 } 1050 1051 if (!hash_empty(cdev->connections)) { 1052 DP_NOTICE(cdev, 1053 "Can't stop iscsi - not all connections were returned\n"); 1054 return -EINVAL; 1055 } 1056 1057 /* Stop the iscsi */ 1058 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev), 1059 QED_SPQ_MODE_EBLOCK, NULL); 1060 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 1061 1062 return rc; 1063 } 1064 1065 static int qed_iscsi_start(struct qed_dev *cdev, 1066 struct qed_iscsi_tid *tasks, 1067 void *event_context, 1068 iscsi_event_cb_t async_event_cb) 1069 { 1070 int rc; 1071 struct qed_tid_mem *tid_info; 1072 1073 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1074 DP_NOTICE(cdev, "iscsi already started;\n"); 1075 return 0; 1076 } 1077 1078 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev), 1079 QED_SPQ_MODE_EBLOCK, NULL, event_context, 1080 async_event_cb); 1081 if (rc) { 1082 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1083 return rc; 1084 } 1085 1086 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1087 hash_init(cdev->connections); 1088 1089 if (!tasks) 1090 return 0; 1091 1092 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1093 1094 if (!tid_info) { 1095 qed_iscsi_stop(cdev); 1096 return -ENOMEM; 1097 } 1098 1099 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev), 1100 tid_info); 1101 if (rc) { 1102 DP_NOTICE(cdev, "Failed to gather task information\n"); 1103 qed_iscsi_stop(cdev); 1104 kfree(tid_info); 1105 return rc; 1106 } 1107 1108 /* Fill task information */ 1109 tasks->size = tid_info->tid_size; 1110 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1111 memcpy(tasks->blocks, tid_info->blocks, 1112 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1113 1114 kfree(tid_info); 1115 1116 return 0; 1117 } 1118 1119 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1120 u32 *handle, 1121 u32 *fw_cid, void __iomem **p_doorbell) 1122 { 1123 struct qed_hash_iscsi_con *hash_con; 1124 int rc; 1125 1126 /* Allocate a hashed connection */ 1127 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1128 if (!hash_con) 1129 return -ENOMEM; 1130 1131 /* Acquire the connection */ 1132 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL, 1133 &hash_con->con); 1134 if (rc) { 1135 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1136 kfree(hash_con); 1137 return rc; 1138 } 1139 1140 /* Added the connection to hash table */ 1141 *handle = hash_con->con->icid; 1142 *fw_cid = hash_con->con->fw_cid; 1143 hash_add(cdev->connections, &hash_con->node, *handle); 1144 1145 if (p_doorbell) 1146 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev), 1147 *handle); 1148 1149 return 0; 1150 } 1151 1152 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1153 { 1154 struct qed_hash_iscsi_con *hash_con; 1155 1156 hash_con = qed_iscsi_get_hash(cdev, handle); 1157 if (!hash_con) { 1158 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1159 handle); 1160 return -EINVAL; 1161 } 1162 1163 hlist_del(&hash_con->node); 1164 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con); 1165 kfree(hash_con); 1166 1167 return 0; 1168 } 1169 1170 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1171 u32 handle, 1172 struct qed_iscsi_params_offload *conn_info) 1173 { 1174 struct qed_hash_iscsi_con *hash_con; 1175 struct qed_iscsi_conn *con; 1176 1177 hash_con = qed_iscsi_get_hash(cdev, handle); 1178 if (!hash_con) { 1179 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1180 handle); 1181 return -EINVAL; 1182 } 1183 1184 /* Update the connection with information from the params */ 1185 con = hash_con->con; 1186 1187 ether_addr_copy(con->local_mac, conn_info->src.mac); 1188 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1189 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1190 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1191 con->local_port = conn_info->src.port; 1192 con->remote_port = conn_info->dst.port; 1193 1194 con->layer_code = conn_info->layer_code; 1195 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1196 con->initial_ack = conn_info->initial_ack; 1197 con->vlan_id = conn_info->vlan_id; 1198 con->tcp_flags = conn_info->tcp_flags; 1199 con->ip_version = conn_info->ip_version; 1200 con->default_cq = conn_info->default_cq; 1201 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1202 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1203 con->rcv_next = conn_info->rcv_next; 1204 con->snd_una = conn_info->snd_una; 1205 con->snd_next = conn_info->snd_next; 1206 con->snd_max = conn_info->snd_max; 1207 con->snd_wnd = conn_info->snd_wnd; 1208 con->rcv_wnd = conn_info->rcv_wnd; 1209 con->snd_wl1 = conn_info->snd_wl1; 1210 con->cwnd = conn_info->cwnd; 1211 con->ss_thresh = conn_info->ss_thresh; 1212 con->srtt = conn_info->srtt; 1213 con->rtt_var = conn_info->rtt_var; 1214 con->ts_time = conn_info->ts_time; 1215 con->ts_recent = conn_info->ts_recent; 1216 con->ts_recent_age = conn_info->ts_recent_age; 1217 con->total_rt = conn_info->total_rt; 1218 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1219 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1220 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1221 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1222 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1223 con->rt_cnt = conn_info->rt_cnt; 1224 con->flow_label = conn_info->flow_label; 1225 con->ka_timeout = conn_info->ka_timeout; 1226 con->ka_interval = conn_info->ka_interval; 1227 con->max_rt_time = conn_info->max_rt_time; 1228 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1229 con->ttl = conn_info->ttl; 1230 con->tos_or_tc = conn_info->tos_or_tc; 1231 con->remote_port = conn_info->remote_port; 1232 con->local_port = conn_info->local_port; 1233 con->mss = conn_info->mss; 1234 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1235 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1236 con->ts_ticks_per_second = conn_info->ts_ticks_per_second; 1237 con->da_timeout_value = conn_info->da_timeout_value; 1238 con->ack_frequency = conn_info->ack_frequency; 1239 1240 /* Set default values on other connection fields */ 1241 con->offl_flags = 0x1; 1242 1243 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con, 1244 QED_SPQ_MODE_EBLOCK, NULL); 1245 } 1246 1247 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1248 u32 handle, 1249 struct qed_iscsi_params_update *conn_info) 1250 { 1251 struct qed_hash_iscsi_con *hash_con; 1252 struct qed_iscsi_conn *con; 1253 1254 hash_con = qed_iscsi_get_hash(cdev, handle); 1255 if (!hash_con) { 1256 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1257 handle); 1258 return -EINVAL; 1259 } 1260 1261 /* Update the connection with information from the params */ 1262 con = hash_con->con; 1263 con->update_flag = conn_info->update_flag; 1264 con->max_seq_size = conn_info->max_seq_size; 1265 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1266 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1267 con->first_seq_length = conn_info->first_seq_length; 1268 con->exp_stat_sn = conn_info->exp_stat_sn; 1269 1270 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con, 1271 QED_SPQ_MODE_EBLOCK, NULL); 1272 } 1273 1274 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1275 { 1276 struct qed_hash_iscsi_con *hash_con; 1277 1278 hash_con = qed_iscsi_get_hash(cdev, handle); 1279 if (!hash_con) { 1280 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1281 handle); 1282 return -EINVAL; 1283 } 1284 1285 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev), 1286 hash_con->con, 1287 QED_SPQ_MODE_EBLOCK, NULL); 1288 } 1289 1290 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1291 u32 handle, u8 abrt_conn) 1292 { 1293 struct qed_hash_iscsi_con *hash_con; 1294 1295 hash_con = qed_iscsi_get_hash(cdev, handle); 1296 if (!hash_con) { 1297 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1298 handle); 1299 return -EINVAL; 1300 } 1301 1302 hash_con->con->abortive_dsconnect = abrt_conn; 1303 1304 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev), 1305 hash_con->con, 1306 QED_SPQ_MODE_EBLOCK, NULL); 1307 } 1308 1309 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1310 { 1311 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats); 1312 } 1313 1314 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1315 .common = &qed_common_ops_pass, 1316 .ll2 = &qed_ll2_ops_pass, 1317 .fill_dev_info = &qed_fill_iscsi_dev_info, 1318 .register_ops = &qed_register_iscsi_ops, 1319 .start = &qed_iscsi_start, 1320 .stop = &qed_iscsi_stop, 1321 .acquire_conn = &qed_iscsi_acquire_conn, 1322 .release_conn = &qed_iscsi_release_conn, 1323 .offload_conn = &qed_iscsi_offload_conn, 1324 .update_conn = &qed_iscsi_update_conn, 1325 .destroy_conn = &qed_iscsi_destroy_conn, 1326 .clear_sq = &qed_iscsi_clear_conn_sq, 1327 .get_stats = &qed_iscsi_stats, 1328 }; 1329 1330 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1331 { 1332 return &qed_iscsi_ops_pass; 1333 } 1334 EXPORT_SYMBOL(qed_get_iscsi_ops); 1335 1336 void qed_put_iscsi_ops(void) 1337 { 1338 } 1339 EXPORT_SYMBOL(qed_put_iscsi_ops); 1340