1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015 QLogic Corporation 3 * 4 * This software is available under the terms of the GNU General Public License 5 * (GPL) Version 2, available from the file COPYING in the main directory of 6 * this source tree. 7 */ 8 9 #include <linux/types.h> 10 #include <asm/byteorder.h> 11 #include <asm/param.h> 12 #include <linux/delay.h> 13 #include <linux/dma-mapping.h> 14 #include <linux/etherdevice.h> 15 #include <linux/interrupt.h> 16 #include <linux/kernel.h> 17 #include <linux/log2.h> 18 #include <linux/module.h> 19 #include <linux/pci.h> 20 #include <linux/slab.h> 21 #include <linux/stddef.h> 22 #include <linux/string.h> 23 #include <linux/version.h> 24 #include <linux/workqueue.h> 25 #include <linux/errno.h> 26 #include <linux/list.h> 27 #include <linux/spinlock.h> 28 #include <linux/qed/qed_iscsi_if.h> 29 #include "qed.h" 30 #include "qed_cxt.h" 31 #include "qed_dev_api.h" 32 #include "qed_hsi.h" 33 #include "qed_hw.h" 34 #include "qed_int.h" 35 #include "qed_iscsi.h" 36 #include "qed_ll2.h" 37 #include "qed_mcp.h" 38 #include "qed_sp.h" 39 #include "qed_sriov.h" 40 #include "qed_reg_addr.h" 41 42 struct qed_iscsi_conn { 43 struct list_head list_entry; 44 bool free_on_delete; 45 46 u16 conn_id; 47 u32 icid; 48 u32 fw_cid; 49 50 u8 layer_code; 51 u8 offl_flags; 52 u8 connect_mode; 53 u32 initial_ack; 54 dma_addr_t sq_pbl_addr; 55 struct qed_chain r2tq; 56 struct qed_chain xhq; 57 struct qed_chain uhq; 58 59 struct tcp_upload_params *tcp_upload_params_virt_addr; 60 dma_addr_t tcp_upload_params_phys_addr; 61 struct scsi_terminate_extra_params *queue_cnts_virt_addr; 62 dma_addr_t queue_cnts_phys_addr; 63 dma_addr_t syn_phy_addr; 64 65 u16 syn_ip_payload_length; 66 u8 local_mac[6]; 67 u8 remote_mac[6]; 68 u16 vlan_id; 69 u8 tcp_flags; 70 u8 ip_version; 71 u32 remote_ip[4]; 72 u32 local_ip[4]; 73 u8 ka_max_probe_cnt; 74 u8 dup_ack_theshold; 75 u32 rcv_next; 76 u32 snd_una; 77 u32 snd_next; 78 u32 snd_max; 79 u32 snd_wnd; 80 u32 rcv_wnd; 81 u32 snd_wl1; 82 u32 cwnd; 83 u32 ss_thresh; 84 u16 srtt; 85 u16 rtt_var; 86 u32 ts_time; 87 u32 ts_recent; 88 u32 ts_recent_age; 89 u32 total_rt; 90 u32 ka_timeout_delta; 91 u32 rt_timeout_delta; 92 u8 dup_ack_cnt; 93 u8 snd_wnd_probe_cnt; 94 u8 ka_probe_cnt; 95 u8 rt_cnt; 96 u32 flow_label; 97 u32 ka_timeout; 98 u32 ka_interval; 99 u32 max_rt_time; 100 u32 initial_rcv_wnd; 101 u8 ttl; 102 u8 tos_or_tc; 103 u16 remote_port; 104 u16 local_port; 105 u16 mss; 106 u8 snd_wnd_scale; 107 u8 rcv_wnd_scale; 108 u32 ts_ticks_per_second; 109 u16 da_timeout_value; 110 u8 ack_frequency; 111 112 u8 update_flag; 113 u8 default_cq; 114 u32 max_seq_size; 115 u32 max_recv_pdu_length; 116 u32 max_send_pdu_length; 117 u32 first_seq_length; 118 u32 exp_stat_sn; 119 u32 stat_sn; 120 u16 physical_q0; 121 u16 physical_q1; 122 u8 abortive_dsconnect; 123 }; 124 125 static int 126 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, 127 enum spq_mode comp_mode, 128 struct qed_spq_comp_cb *p_comp_addr, 129 void *event_context, iscsi_event_cb_t async_event_cb) 130 { 131 struct iscsi_init_ramrod_params *p_ramrod = NULL; 132 struct scsi_init_func_queues *p_queue = NULL; 133 struct qed_iscsi_pf_params *p_params = NULL; 134 struct iscsi_spe_func_init *p_init = NULL; 135 struct qed_spq_entry *p_ent = NULL; 136 struct qed_sp_init_data init_data; 137 int rc = 0; 138 u32 dval; 139 u16 val; 140 u8 i; 141 142 /* Get SPQ entry */ 143 memset(&init_data, 0, sizeof(init_data)); 144 init_data.cid = qed_spq_get_cid(p_hwfn); 145 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 146 init_data.comp_mode = comp_mode; 147 init_data.p_comp_data = p_comp_addr; 148 149 rc = qed_sp_init_request(p_hwfn, &p_ent, 150 ISCSI_RAMROD_CMD_ID_INIT_FUNC, 151 PROTOCOLID_ISCSI, &init_data); 152 if (rc) 153 return rc; 154 155 p_ramrod = &p_ent->ramrod.iscsi_init; 156 p_init = &p_ramrod->iscsi_init_spe; 157 p_params = &p_hwfn->pf_params.iscsi_pf_params; 158 p_queue = &p_init->q_params; 159 160 SET_FIELD(p_init->hdr.flags, 161 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); 162 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; 163 164 val = p_params->half_way_close_timeout; 165 p_init->half_way_close_timeout = cpu_to_le16(val); 166 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; 167 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; 168 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; 169 p_init->func_params.log_page_size = p_params->log_page_size; 170 val = p_params->num_tasks; 171 p_init->func_params.num_tasks = cpu_to_le16(val); 172 p_init->debug_mode.flags = p_params->debug_mode; 173 174 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, 175 p_params->glbl_q_params_addr); 176 177 val = p_params->cq_num_entries; 178 p_queue->cq_num_entries = cpu_to_le16(val); 179 val = p_params->cmdq_num_entries; 180 p_queue->cmdq_num_entries = cpu_to_le16(val); 181 p_queue->num_queues = p_params->num_queues; 182 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; 183 p_queue->queue_relative_offset = (u8)dval; 184 p_queue->cq_sb_pi = p_params->gl_rq_pi; 185 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; 186 187 for (i = 0; i < p_params->num_queues; i++) { 188 val = p_hwfn->sbs_info[i]->igu_sb_id; 189 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); 190 } 191 192 p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id); 193 194 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], 195 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); 196 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = 197 p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; 198 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; 199 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 200 val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; 201 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); 202 203 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], 204 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); 205 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = 206 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; 207 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; 208 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 209 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; 210 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); 211 val = p_params->rq_buffer_size; 212 p_queue->rq_buffer_size = cpu_to_le16(val); 213 if (p_params->is_target) { 214 SET_FIELD(p_queue->q_validity, 215 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 216 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) 217 SET_FIELD(p_queue->q_validity, 218 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); 219 SET_FIELD(p_queue->q_validity, 220 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); 221 } else { 222 SET_FIELD(p_queue->q_validity, 223 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); 224 } 225 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); 226 val = p_params->tx_sws_timer; 227 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); 228 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt; 229 230 p_hwfn->p_iscsi_info->event_context = event_context; 231 p_hwfn->p_iscsi_info->event_cb = async_event_cb; 232 233 return qed_spq_post(p_hwfn, p_ent, NULL); 234 } 235 236 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn, 237 struct qed_iscsi_conn *p_conn, 238 enum spq_mode comp_mode, 239 struct qed_spq_comp_cb *p_comp_addr) 240 { 241 struct iscsi_spe_conn_offload *p_ramrod = NULL; 242 struct tcp_offload_params_opt2 *p_tcp2 = NULL; 243 struct tcp_offload_params *p_tcp = NULL; 244 struct qed_spq_entry *p_ent = NULL; 245 struct qed_sp_init_data init_data; 246 union qed_qm_pq_params pq_params; 247 u16 pq0_id = 0, pq1_id = 0; 248 dma_addr_t r2tq_pbl_addr; 249 dma_addr_t xhq_pbl_addr; 250 dma_addr_t uhq_pbl_addr; 251 int rc = 0; 252 u32 dval; 253 u16 wval; 254 u8 i; 255 u16 *p; 256 257 /* Get SPQ entry */ 258 memset(&init_data, 0, sizeof(init_data)); 259 init_data.cid = p_conn->icid; 260 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 261 init_data.comp_mode = comp_mode; 262 init_data.p_comp_data = p_comp_addr; 263 264 rc = qed_sp_init_request(p_hwfn, &p_ent, 265 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN, 266 PROTOCOLID_ISCSI, &init_data); 267 if (rc) 268 return rc; 269 270 p_ramrod = &p_ent->ramrod.iscsi_conn_offload; 271 272 /* Transmission PQ is the first of the PF */ 273 memset(&pq_params, 0, sizeof(pq_params)); 274 pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params); 275 p_conn->physical_q0 = cpu_to_le16(pq0_id); 276 p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id); 277 278 /* iSCSI Pure-ACK PQ */ 279 pq_params.iscsi.q_idx = 1; 280 pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params); 281 p_conn->physical_q1 = cpu_to_le16(pq1_id); 282 p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id); 283 284 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; 285 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, 286 p_conn->layer_code); 287 288 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 289 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 290 291 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); 292 293 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); 294 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); 295 296 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); 297 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); 298 299 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); 300 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); 301 302 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); 303 p_ramrod->iscsi.flags = p_conn->offl_flags; 304 p_ramrod->iscsi.default_cq = p_conn->default_cq; 305 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); 306 307 if (!GET_FIELD(p_ramrod->iscsi.flags, 308 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { 309 p_tcp = &p_ramrod->tcp; 310 311 p = (u16 *)p_conn->local_mac; 312 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); 313 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 314 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 315 316 p = (u16 *)p_conn->remote_mac; 317 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); 318 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 319 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 320 321 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); 322 323 p_tcp->flags = p_conn->tcp_flags; 324 p_tcp->ip_version = p_conn->ip_version; 325 for (i = 0; i < 4; i++) { 326 dval = p_conn->remote_ip[i]; 327 p_tcp->remote_ip[i] = cpu_to_le32(dval); 328 dval = p_conn->local_ip[i]; 329 p_tcp->local_ip[i] = cpu_to_le32(dval); 330 } 331 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; 332 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; 333 334 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); 335 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); 336 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); 337 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); 338 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); 339 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); 340 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); 341 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); 342 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); 343 p_tcp->srtt = cpu_to_le16(p_conn->srtt); 344 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); 345 p_tcp->ts_time = cpu_to_le32(p_conn->ts_time); 346 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); 347 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); 348 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); 349 dval = p_conn->ka_timeout_delta; 350 p_tcp->ka_timeout_delta = cpu_to_le32(dval); 351 dval = p_conn->rt_timeout_delta; 352 p_tcp->rt_timeout_delta = cpu_to_le32(dval); 353 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; 354 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; 355 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; 356 p_tcp->rt_cnt = p_conn->rt_cnt; 357 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); 358 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); 359 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); 360 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); 361 dval = p_conn->initial_rcv_wnd; 362 p_tcp->initial_rcv_wnd = cpu_to_le32(dval); 363 p_tcp->ttl = p_conn->ttl; 364 p_tcp->tos_or_tc = p_conn->tos_or_tc; 365 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); 366 p_tcp->local_port = cpu_to_le16(p_conn->local_port); 367 p_tcp->mss = cpu_to_le16(p_conn->mss); 368 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; 369 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; 370 dval = p_conn->ts_ticks_per_second; 371 p_tcp->ts_ticks_per_second = cpu_to_le32(dval); 372 wval = p_conn->da_timeout_value; 373 p_tcp->da_timeout_value = cpu_to_le16(wval); 374 p_tcp->ack_frequency = p_conn->ack_frequency; 375 p_tcp->connect_mode = p_conn->connect_mode; 376 } else { 377 p_tcp2 = 378 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; 379 380 p = (u16 *)p_conn->local_mac; 381 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); 382 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); 383 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); 384 385 p = (u16 *)p_conn->remote_mac; 386 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); 387 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); 388 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); 389 390 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); 391 p_tcp2->flags = p_conn->tcp_flags; 392 393 p_tcp2->ip_version = p_conn->ip_version; 394 for (i = 0; i < 4; i++) { 395 dval = p_conn->remote_ip[i]; 396 p_tcp2->remote_ip[i] = cpu_to_le32(dval); 397 dval = p_conn->local_ip[i]; 398 p_tcp2->local_ip[i] = cpu_to_le32(dval); 399 } 400 401 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); 402 p_tcp2->ttl = p_conn->ttl; 403 p_tcp2->tos_or_tc = p_conn->tos_or_tc; 404 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); 405 p_tcp2->local_port = cpu_to_le16(p_conn->local_port); 406 p_tcp2->mss = cpu_to_le16(p_conn->mss); 407 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; 408 p_tcp2->connect_mode = p_conn->connect_mode; 409 wval = p_conn->syn_ip_payload_length; 410 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); 411 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); 412 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); 413 } 414 415 return qed_spq_post(p_hwfn, p_ent, NULL); 416 } 417 418 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn, 419 struct qed_iscsi_conn *p_conn, 420 enum spq_mode comp_mode, 421 struct qed_spq_comp_cb *p_comp_addr) 422 { 423 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL; 424 struct qed_spq_entry *p_ent = NULL; 425 struct qed_sp_init_data init_data; 426 int rc = -EINVAL; 427 u32 dval; 428 429 /* Get SPQ entry */ 430 memset(&init_data, 0, sizeof(init_data)); 431 init_data.cid = p_conn->icid; 432 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 433 init_data.comp_mode = comp_mode; 434 init_data.p_comp_data = p_comp_addr; 435 436 rc = qed_sp_init_request(p_hwfn, &p_ent, 437 ISCSI_RAMROD_CMD_ID_UPDATE_CONN, 438 PROTOCOLID_ISCSI, &init_data); 439 if (rc) 440 return rc; 441 442 p_ramrod = &p_ent->ramrod.iscsi_conn_update; 443 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; 444 SET_FIELD(p_ramrod->hdr.flags, 445 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 446 447 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 448 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 449 p_ramrod->flags = p_conn->update_flag; 450 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size); 451 dval = p_conn->max_recv_pdu_length; 452 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval); 453 dval = p_conn->max_send_pdu_length; 454 p_ramrod->max_send_pdu_length = cpu_to_le32(dval); 455 dval = p_conn->first_seq_length; 456 p_ramrod->first_seq_length = cpu_to_le32(dval); 457 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn); 458 459 return qed_spq_post(p_hwfn, p_ent, NULL); 460 } 461 462 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn, 463 struct qed_iscsi_conn *p_conn, 464 enum spq_mode comp_mode, 465 struct qed_spq_comp_cb *p_comp_addr) 466 { 467 struct iscsi_spe_conn_termination *p_ramrod = NULL; 468 struct qed_spq_entry *p_ent = NULL; 469 struct qed_sp_init_data init_data; 470 int rc = -EINVAL; 471 472 /* Get SPQ entry */ 473 memset(&init_data, 0, sizeof(init_data)); 474 init_data.cid = p_conn->icid; 475 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 476 init_data.comp_mode = comp_mode; 477 init_data.p_comp_data = p_comp_addr; 478 479 rc = qed_sp_init_request(p_hwfn, &p_ent, 480 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN, 481 PROTOCOLID_ISCSI, &init_data); 482 if (rc) 483 return rc; 484 485 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate; 486 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; 487 SET_FIELD(p_ramrod->hdr.flags, 488 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 489 490 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); 491 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); 492 p_ramrod->abortive = p_conn->abortive_dsconnect; 493 494 DMA_REGPAIR_LE(p_ramrod->query_params_addr, 495 p_conn->tcp_upload_params_phys_addr); 496 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr); 497 498 return qed_spq_post(p_hwfn, p_ent, NULL); 499 } 500 501 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn, 502 struct qed_iscsi_conn *p_conn, 503 enum spq_mode comp_mode, 504 struct qed_spq_comp_cb *p_comp_addr) 505 { 506 struct iscsi_slow_path_hdr *p_ramrod = NULL; 507 struct qed_spq_entry *p_ent = NULL; 508 struct qed_sp_init_data init_data; 509 int rc = -EINVAL; 510 511 /* Get SPQ entry */ 512 memset(&init_data, 0, sizeof(init_data)); 513 init_data.cid = p_conn->icid; 514 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 515 init_data.comp_mode = comp_mode; 516 init_data.p_comp_data = p_comp_addr; 517 518 rc = qed_sp_init_request(p_hwfn, &p_ent, 519 ISCSI_RAMROD_CMD_ID_CLEAR_SQ, 520 PROTOCOLID_ISCSI, &init_data); 521 if (rc) 522 return rc; 523 524 p_ramrod = &p_ent->ramrod.iscsi_empty; 525 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; 526 SET_FIELD(p_ramrod->flags, 527 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); 528 529 return qed_spq_post(p_hwfn, p_ent, NULL); 530 } 531 532 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn, 533 enum spq_mode comp_mode, 534 struct qed_spq_comp_cb *p_comp_addr) 535 { 536 struct iscsi_spe_func_dstry *p_ramrod = NULL; 537 struct qed_spq_entry *p_ent = NULL; 538 struct qed_sp_init_data init_data; 539 int rc = 0; 540 541 /* Get SPQ entry */ 542 memset(&init_data, 0, sizeof(init_data)); 543 init_data.cid = qed_spq_get_cid(p_hwfn); 544 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 545 init_data.comp_mode = comp_mode; 546 init_data.p_comp_data = p_comp_addr; 547 548 rc = qed_sp_init_request(p_hwfn, &p_ent, 549 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC, 550 PROTOCOLID_ISCSI, &init_data); 551 if (rc) 552 return rc; 553 554 p_ramrod = &p_ent->ramrod.iscsi_destroy; 555 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; 556 557 return qed_spq_post(p_hwfn, p_ent, NULL); 558 } 559 560 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid) 561 { 562 return (u8 __iomem *)p_hwfn->doorbells + 563 qed_db_addr(cid, DQ_DEMS_LEGACY); 564 } 565 566 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn, 567 u8 bdq_id) 568 { 569 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id); 570 571 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM + 572 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id, 573 bdq_id); 574 } 575 576 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, 577 u8 bdq_id) 578 { 579 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id); 580 581 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM + 582 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id, 583 bdq_id); 584 } 585 586 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn, 587 struct qed_iscsi_conn *p_conn) 588 { 589 if (!p_conn->queue_cnts_virt_addr) 590 goto nomem; 591 memset(p_conn->queue_cnts_virt_addr, 0, 592 sizeof(*p_conn->queue_cnts_virt_addr)); 593 594 if (!p_conn->tcp_upload_params_virt_addr) 595 goto nomem; 596 memset(p_conn->tcp_upload_params_virt_addr, 0, 597 sizeof(*p_conn->tcp_upload_params_virt_addr)); 598 599 if (!p_conn->r2tq.p_virt_addr) 600 goto nomem; 601 qed_chain_pbl_zero_mem(&p_conn->r2tq); 602 603 if (!p_conn->uhq.p_virt_addr) 604 goto nomem; 605 qed_chain_pbl_zero_mem(&p_conn->uhq); 606 607 if (!p_conn->xhq.p_virt_addr) 608 goto nomem; 609 qed_chain_pbl_zero_mem(&p_conn->xhq); 610 611 return 0; 612 nomem: 613 return -ENOMEM; 614 } 615 616 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn, 617 struct qed_iscsi_conn **p_out_conn) 618 { 619 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; 620 struct scsi_terminate_extra_params *p_q_cnts = NULL; 621 struct qed_iscsi_pf_params *p_params = NULL; 622 struct tcp_upload_params *p_tcp = NULL; 623 struct qed_iscsi_conn *p_conn = NULL; 624 int rc = 0; 625 626 /* Try finding a free connection that can be used */ 627 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 628 if (!list_empty(&p_hwfn->p_iscsi_info->free_list)) 629 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list, 630 struct qed_iscsi_conn, list_entry); 631 if (p_conn) { 632 list_del(&p_conn->list_entry); 633 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 634 *p_out_conn = p_conn; 635 return 0; 636 } 637 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 638 639 /* Need to allocate a new connection */ 640 p_params = &p_hwfn->pf_params.iscsi_pf_params; 641 642 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL); 643 if (!p_conn) 644 return -ENOMEM; 645 646 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 647 sizeof(*p_q_cnts), 648 &p_conn->queue_cnts_phys_addr, 649 GFP_KERNEL); 650 if (!p_q_cnts) 651 goto nomem_queue_cnts_param; 652 p_conn->queue_cnts_virt_addr = p_q_cnts; 653 654 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 655 sizeof(*p_tcp), 656 &p_conn->tcp_upload_params_phys_addr, 657 GFP_KERNEL); 658 if (!p_tcp) 659 goto nomem_upload_param; 660 p_conn->tcp_upload_params_virt_addr = p_tcp; 661 662 r2tq_num_elements = p_params->num_r2tq_pages_in_ring * 663 QED_CHAIN_PAGE_SIZE / 0x80; 664 rc = qed_chain_alloc(p_hwfn->cdev, 665 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 666 QED_CHAIN_MODE_PBL, 667 QED_CHAIN_CNT_TYPE_U16, 668 r2tq_num_elements, 0x80, &p_conn->r2tq); 669 if (rc) 670 goto nomem_r2tq; 671 672 uhq_num_elements = p_params->num_uhq_pages_in_ring * 673 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); 674 rc = qed_chain_alloc(p_hwfn->cdev, 675 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 676 QED_CHAIN_MODE_PBL, 677 QED_CHAIN_CNT_TYPE_U16, 678 uhq_num_elements, 679 sizeof(struct iscsi_uhqe), &p_conn->uhq); 680 if (rc) 681 goto nomem_uhq; 682 683 xhq_num_elements = uhq_num_elements; 684 rc = qed_chain_alloc(p_hwfn->cdev, 685 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 686 QED_CHAIN_MODE_PBL, 687 QED_CHAIN_CNT_TYPE_U16, 688 xhq_num_elements, 689 sizeof(struct iscsi_xhqe), &p_conn->xhq); 690 if (rc) 691 goto nomem; 692 693 p_conn->free_on_delete = true; 694 *p_out_conn = p_conn; 695 return 0; 696 697 nomem: 698 qed_chain_free(p_hwfn->cdev, &p_conn->uhq); 699 nomem_uhq: 700 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq); 701 nomem_r2tq: 702 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 703 sizeof(struct tcp_upload_params), 704 p_conn->tcp_upload_params_virt_addr, 705 p_conn->tcp_upload_params_phys_addr); 706 nomem_upload_param: 707 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 708 sizeof(struct scsi_terminate_extra_params), 709 p_conn->queue_cnts_virt_addr, 710 p_conn->queue_cnts_phys_addr); 711 nomem_queue_cnts_param: 712 kfree(p_conn); 713 714 return -ENOMEM; 715 } 716 717 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn, 718 struct qed_iscsi_conn *p_in_conn, 719 struct qed_iscsi_conn **p_out_conn) 720 { 721 struct qed_iscsi_conn *p_conn = NULL; 722 int rc = 0; 723 u32 icid; 724 725 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 726 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid); 727 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 728 if (rc) 729 return rc; 730 731 /* Use input connection or allocate a new one */ 732 if (p_in_conn) 733 p_conn = p_in_conn; 734 else 735 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn); 736 737 if (!rc) 738 rc = qed_iscsi_setup_connection(p_hwfn, p_conn); 739 740 if (rc) { 741 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 742 qed_cxt_release_cid(p_hwfn, icid); 743 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 744 return rc; 745 } 746 747 p_conn->icid = icid; 748 p_conn->conn_id = (u16)icid; 749 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid; 750 751 *p_out_conn = p_conn; 752 753 return rc; 754 } 755 756 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn, 757 struct qed_iscsi_conn *p_conn) 758 { 759 spin_lock_bh(&p_hwfn->p_iscsi_info->lock); 760 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list); 761 qed_cxt_release_cid(p_hwfn, p_conn->icid); 762 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock); 763 } 764 765 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn) 766 { 767 struct qed_iscsi_info *p_iscsi_info; 768 769 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL); 770 if (!p_iscsi_info) 771 return NULL; 772 773 INIT_LIST_HEAD(&p_iscsi_info->free_list); 774 return p_iscsi_info; 775 } 776 777 void qed_iscsi_setup(struct qed_hwfn *p_hwfn, 778 struct qed_iscsi_info *p_iscsi_info) 779 { 780 spin_lock_init(&p_iscsi_info->lock); 781 } 782 783 void qed_iscsi_free(struct qed_hwfn *p_hwfn, 784 struct qed_iscsi_info *p_iscsi_info) 785 { 786 kfree(p_iscsi_info); 787 } 788 789 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn, 790 struct qed_ptt *p_ptt, 791 struct qed_iscsi_stats *p_stats) 792 { 793 struct tstorm_iscsi_stats_drv tstats; 794 u32 tstats_addr; 795 796 memset(&tstats, 0, sizeof(tstats)); 797 tstats_addr = BAR0_MAP_REG_TSDM_RAM + 798 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 799 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 800 801 p_stats->iscsi_rx_bytes_cnt = 802 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt); 803 p_stats->iscsi_rx_packet_cnt = 804 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt); 805 p_stats->iscsi_cmdq_threshold_cnt = 806 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt); 807 p_stats->iscsi_rq_threshold_cnt = 808 le32_to_cpu(tstats.iscsi_rq_threshold_cnt); 809 p_stats->iscsi_immq_threshold_cnt = 810 le32_to_cpu(tstats.iscsi_immq_threshold_cnt); 811 } 812 813 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn, 814 struct qed_ptt *p_ptt, 815 struct qed_iscsi_stats *p_stats) 816 { 817 struct mstorm_iscsi_stats_drv mstats; 818 u32 mstats_addr; 819 820 memset(&mstats, 0, sizeof(mstats)); 821 mstats_addr = BAR0_MAP_REG_MSDM_RAM + 822 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 823 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats)); 824 825 p_stats->iscsi_rx_dropped_pdus_task_not_valid = 826 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid); 827 } 828 829 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn, 830 struct qed_ptt *p_ptt, 831 struct qed_iscsi_stats *p_stats) 832 { 833 struct ustorm_iscsi_stats_drv ustats; 834 u32 ustats_addr; 835 836 memset(&ustats, 0, sizeof(ustats)); 837 ustats_addr = BAR0_MAP_REG_USDM_RAM + 838 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id); 839 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 840 841 p_stats->iscsi_rx_data_pdu_cnt = 842 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt); 843 p_stats->iscsi_rx_r2t_pdu_cnt = 844 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt); 845 p_stats->iscsi_rx_total_pdu_cnt = 846 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt); 847 } 848 849 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn, 850 struct qed_ptt *p_ptt, 851 struct qed_iscsi_stats *p_stats) 852 { 853 struct xstorm_iscsi_stats_drv xstats; 854 u32 xstats_addr; 855 856 memset(&xstats, 0, sizeof(xstats)); 857 xstats_addr = BAR0_MAP_REG_XSDM_RAM + 858 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 859 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats)); 860 861 p_stats->iscsi_tx_go_to_slow_start_event_cnt = 862 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt); 863 p_stats->iscsi_tx_fast_retransmit_event_cnt = 864 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt); 865 } 866 867 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn, 868 struct qed_ptt *p_ptt, 869 struct qed_iscsi_stats *p_stats) 870 { 871 struct ystorm_iscsi_stats_drv ystats; 872 u32 ystats_addr; 873 874 memset(&ystats, 0, sizeof(ystats)); 875 ystats_addr = BAR0_MAP_REG_YSDM_RAM + 876 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 877 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats)); 878 879 p_stats->iscsi_tx_data_pdu_cnt = 880 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt); 881 p_stats->iscsi_tx_r2t_pdu_cnt = 882 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt); 883 p_stats->iscsi_tx_total_pdu_cnt = 884 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt); 885 } 886 887 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn, 888 struct qed_ptt *p_ptt, 889 struct qed_iscsi_stats *p_stats) 890 { 891 struct pstorm_iscsi_stats_drv pstats; 892 u32 pstats_addr; 893 894 memset(&pstats, 0, sizeof(pstats)); 895 pstats_addr = BAR0_MAP_REG_PSDM_RAM + 896 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id); 897 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 898 899 p_stats->iscsi_tx_bytes_cnt = 900 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt); 901 p_stats->iscsi_tx_packet_cnt = 902 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt); 903 } 904 905 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn, 906 struct qed_iscsi_stats *stats) 907 { 908 struct qed_ptt *p_ptt; 909 910 memset(stats, 0, sizeof(*stats)); 911 912 p_ptt = qed_ptt_acquire(p_hwfn); 913 if (!p_ptt) { 914 DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 915 return -EAGAIN; 916 } 917 918 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats); 919 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats); 920 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats); 921 922 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats); 923 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats); 924 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats); 925 926 qed_ptt_release(p_hwfn, p_ptt); 927 928 return 0; 929 } 930 931 struct qed_hash_iscsi_con { 932 struct hlist_node node; 933 struct qed_iscsi_conn *con; 934 }; 935 936 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev, 937 struct qed_dev_iscsi_info *info) 938 { 939 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 940 941 int rc; 942 943 memset(info, 0, sizeof(*info)); 944 rc = qed_fill_dev_info(cdev, &info->common); 945 946 info->primary_dbq_rq_addr = 947 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ); 948 info->secondary_bdq_rq_addr = 949 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ); 950 951 return rc; 952 } 953 954 static void qed_register_iscsi_ops(struct qed_dev *cdev, 955 struct qed_iscsi_cb_ops *ops, void *cookie) 956 { 957 cdev->protocol_ops.iscsi = ops; 958 cdev->ops_cookie = cookie; 959 } 960 961 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev, 962 u32 handle) 963 { 964 struct qed_hash_iscsi_con *hash_con = NULL; 965 966 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) 967 return NULL; 968 969 hash_for_each_possible(cdev->connections, hash_con, node, handle) { 970 if (hash_con->con->icid == handle) 971 break; 972 } 973 974 if (!hash_con || (hash_con->con->icid != handle)) 975 return NULL; 976 977 return hash_con; 978 } 979 980 static int qed_iscsi_stop(struct qed_dev *cdev) 981 { 982 int rc; 983 984 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) { 985 DP_NOTICE(cdev, "iscsi already stopped\n"); 986 return 0; 987 } 988 989 if (!hash_empty(cdev->connections)) { 990 DP_NOTICE(cdev, 991 "Can't stop iscsi - not all connections were returned\n"); 992 return -EINVAL; 993 } 994 995 /* Stop the iscsi */ 996 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev), 997 QED_SPQ_MODE_EBLOCK, NULL); 998 cdev->flags &= ~QED_FLAG_STORAGE_STARTED; 999 1000 return rc; 1001 } 1002 1003 static int qed_iscsi_start(struct qed_dev *cdev, 1004 struct qed_iscsi_tid *tasks, 1005 void *event_context, 1006 iscsi_event_cb_t async_event_cb) 1007 { 1008 int rc; 1009 struct qed_tid_mem *tid_info; 1010 1011 if (cdev->flags & QED_FLAG_STORAGE_STARTED) { 1012 DP_NOTICE(cdev, "iscsi already started;\n"); 1013 return 0; 1014 } 1015 1016 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev), 1017 QED_SPQ_MODE_EBLOCK, NULL, event_context, 1018 async_event_cb); 1019 if (rc) { 1020 DP_NOTICE(cdev, "Failed to start iscsi\n"); 1021 return rc; 1022 } 1023 1024 cdev->flags |= QED_FLAG_STORAGE_STARTED; 1025 hash_init(cdev->connections); 1026 1027 if (!tasks) 1028 return 0; 1029 1030 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL); 1031 1032 if (!tid_info) { 1033 qed_iscsi_stop(cdev); 1034 return -ENOMEM; 1035 } 1036 1037 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev), 1038 tid_info); 1039 if (rc) { 1040 DP_NOTICE(cdev, "Failed to gather task information\n"); 1041 qed_iscsi_stop(cdev); 1042 kfree(tid_info); 1043 return rc; 1044 } 1045 1046 /* Fill task information */ 1047 tasks->size = tid_info->tid_size; 1048 tasks->num_tids_per_block = tid_info->num_tids_per_block; 1049 memcpy(tasks->blocks, tid_info->blocks, 1050 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *)); 1051 1052 kfree(tid_info); 1053 1054 return 0; 1055 } 1056 1057 static int qed_iscsi_acquire_conn(struct qed_dev *cdev, 1058 u32 *handle, 1059 u32 *fw_cid, void __iomem **p_doorbell) 1060 { 1061 struct qed_hash_iscsi_con *hash_con; 1062 int rc; 1063 1064 /* Allocate a hashed connection */ 1065 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC); 1066 if (!hash_con) 1067 return -ENOMEM; 1068 1069 /* Acquire the connection */ 1070 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL, 1071 &hash_con->con); 1072 if (rc) { 1073 DP_NOTICE(cdev, "Failed to acquire Connection\n"); 1074 kfree(hash_con); 1075 return rc; 1076 } 1077 1078 /* Added the connection to hash table */ 1079 *handle = hash_con->con->icid; 1080 *fw_cid = hash_con->con->fw_cid; 1081 hash_add(cdev->connections, &hash_con->node, *handle); 1082 1083 if (p_doorbell) 1084 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev), 1085 *handle); 1086 1087 return 0; 1088 } 1089 1090 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle) 1091 { 1092 struct qed_hash_iscsi_con *hash_con; 1093 1094 hash_con = qed_iscsi_get_hash(cdev, handle); 1095 if (!hash_con) { 1096 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1097 handle); 1098 return -EINVAL; 1099 } 1100 1101 hlist_del(&hash_con->node); 1102 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con); 1103 kfree(hash_con); 1104 1105 return 0; 1106 } 1107 1108 static int qed_iscsi_offload_conn(struct qed_dev *cdev, 1109 u32 handle, 1110 struct qed_iscsi_params_offload *conn_info) 1111 { 1112 struct qed_hash_iscsi_con *hash_con; 1113 struct qed_iscsi_conn *con; 1114 1115 hash_con = qed_iscsi_get_hash(cdev, handle); 1116 if (!hash_con) { 1117 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1118 handle); 1119 return -EINVAL; 1120 } 1121 1122 /* Update the connection with information from the params */ 1123 con = hash_con->con; 1124 1125 ether_addr_copy(con->local_mac, conn_info->src.mac); 1126 ether_addr_copy(con->remote_mac, conn_info->dst.mac); 1127 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip)); 1128 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip)); 1129 con->local_port = conn_info->src.port; 1130 con->remote_port = conn_info->dst.port; 1131 1132 con->layer_code = conn_info->layer_code; 1133 con->sq_pbl_addr = conn_info->sq_pbl_addr; 1134 con->initial_ack = conn_info->initial_ack; 1135 con->vlan_id = conn_info->vlan_id; 1136 con->tcp_flags = conn_info->tcp_flags; 1137 con->ip_version = conn_info->ip_version; 1138 con->default_cq = conn_info->default_cq; 1139 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt; 1140 con->dup_ack_theshold = conn_info->dup_ack_theshold; 1141 con->rcv_next = conn_info->rcv_next; 1142 con->snd_una = conn_info->snd_una; 1143 con->snd_next = conn_info->snd_next; 1144 con->snd_max = conn_info->snd_max; 1145 con->snd_wnd = conn_info->snd_wnd; 1146 con->rcv_wnd = conn_info->rcv_wnd; 1147 con->snd_wl1 = conn_info->snd_wl1; 1148 con->cwnd = conn_info->cwnd; 1149 con->ss_thresh = conn_info->ss_thresh; 1150 con->srtt = conn_info->srtt; 1151 con->rtt_var = conn_info->rtt_var; 1152 con->ts_time = conn_info->ts_time; 1153 con->ts_recent = conn_info->ts_recent; 1154 con->ts_recent_age = conn_info->ts_recent_age; 1155 con->total_rt = conn_info->total_rt; 1156 con->ka_timeout_delta = conn_info->ka_timeout_delta; 1157 con->rt_timeout_delta = conn_info->rt_timeout_delta; 1158 con->dup_ack_cnt = conn_info->dup_ack_cnt; 1159 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt; 1160 con->ka_probe_cnt = conn_info->ka_probe_cnt; 1161 con->rt_cnt = conn_info->rt_cnt; 1162 con->flow_label = conn_info->flow_label; 1163 con->ka_timeout = conn_info->ka_timeout; 1164 con->ka_interval = conn_info->ka_interval; 1165 con->max_rt_time = conn_info->max_rt_time; 1166 con->initial_rcv_wnd = conn_info->initial_rcv_wnd; 1167 con->ttl = conn_info->ttl; 1168 con->tos_or_tc = conn_info->tos_or_tc; 1169 con->remote_port = conn_info->remote_port; 1170 con->local_port = conn_info->local_port; 1171 con->mss = conn_info->mss; 1172 con->snd_wnd_scale = conn_info->snd_wnd_scale; 1173 con->rcv_wnd_scale = conn_info->rcv_wnd_scale; 1174 con->ts_ticks_per_second = conn_info->ts_ticks_per_second; 1175 con->da_timeout_value = conn_info->da_timeout_value; 1176 con->ack_frequency = conn_info->ack_frequency; 1177 1178 /* Set default values on other connection fields */ 1179 con->offl_flags = 0x1; 1180 1181 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con, 1182 QED_SPQ_MODE_EBLOCK, NULL); 1183 } 1184 1185 static int qed_iscsi_update_conn(struct qed_dev *cdev, 1186 u32 handle, 1187 struct qed_iscsi_params_update *conn_info) 1188 { 1189 struct qed_hash_iscsi_con *hash_con; 1190 struct qed_iscsi_conn *con; 1191 1192 hash_con = qed_iscsi_get_hash(cdev, handle); 1193 if (!hash_con) { 1194 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1195 handle); 1196 return -EINVAL; 1197 } 1198 1199 /* Update the connection with information from the params */ 1200 con = hash_con->con; 1201 con->update_flag = conn_info->update_flag; 1202 con->max_seq_size = conn_info->max_seq_size; 1203 con->max_recv_pdu_length = conn_info->max_recv_pdu_length; 1204 con->max_send_pdu_length = conn_info->max_send_pdu_length; 1205 con->first_seq_length = conn_info->first_seq_length; 1206 con->exp_stat_sn = conn_info->exp_stat_sn; 1207 1208 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con, 1209 QED_SPQ_MODE_EBLOCK, NULL); 1210 } 1211 1212 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle) 1213 { 1214 struct qed_hash_iscsi_con *hash_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 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev), 1224 hash_con->con, 1225 QED_SPQ_MODE_EBLOCK, NULL); 1226 } 1227 1228 static int qed_iscsi_destroy_conn(struct qed_dev *cdev, 1229 u32 handle, u8 abrt_conn) 1230 { 1231 struct qed_hash_iscsi_con *hash_con; 1232 1233 hash_con = qed_iscsi_get_hash(cdev, handle); 1234 if (!hash_con) { 1235 DP_NOTICE(cdev, "Failed to find connection for handle %d\n", 1236 handle); 1237 return -EINVAL; 1238 } 1239 1240 hash_con->con->abortive_dsconnect = abrt_conn; 1241 1242 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev), 1243 hash_con->con, 1244 QED_SPQ_MODE_EBLOCK, NULL); 1245 } 1246 1247 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats) 1248 { 1249 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats); 1250 } 1251 1252 static const struct qed_iscsi_ops qed_iscsi_ops_pass = { 1253 .common = &qed_common_ops_pass, 1254 .ll2 = &qed_ll2_ops_pass, 1255 .fill_dev_info = &qed_fill_iscsi_dev_info, 1256 .register_ops = &qed_register_iscsi_ops, 1257 .start = &qed_iscsi_start, 1258 .stop = &qed_iscsi_stop, 1259 .acquire_conn = &qed_iscsi_acquire_conn, 1260 .release_conn = &qed_iscsi_release_conn, 1261 .offload_conn = &qed_iscsi_offload_conn, 1262 .update_conn = &qed_iscsi_update_conn, 1263 .destroy_conn = &qed_iscsi_destroy_conn, 1264 .clear_sq = &qed_iscsi_clear_conn_sq, 1265 .get_stats = &qed_iscsi_stats, 1266 }; 1267 1268 const struct qed_iscsi_ops *qed_get_iscsi_ops(void) 1269 { 1270 return &qed_iscsi_ops_pass; 1271 } 1272 EXPORT_SYMBOL(qed_get_iscsi_ops); 1273 1274 void qed_put_iscsi_ops(void) 1275 { 1276 } 1277 EXPORT_SYMBOL(qed_put_iscsi_ops); 1278