drivers/net/ethernet/qlogic/qed/qed_iscsi.c

   1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
   2 /* QLogic qed NIC Driver
   3  * Copyright (c) 2015-2017  QLogic Corporation
   4  * Copyright (c) 2019-2020 Marvell International Ltd.
   5  */
   6
   7 #include <linux/types.h>
   8 #include <asm/byteorder.h>
   9 #include <asm/param.h>
  10 #include <linux/delay.h>
  11 #include <linux/dma-mapping.h>
  12 #include <linux/etherdevice.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/kernel.h>
  15 #include <linux/log2.h>
  16 #include <linux/module.h>
  17 #include <linux/pci.h>
  18 #include <linux/slab.h>
  19 #include <linux/stddef.h>
  20 #include <linux/string.h>
  21 #include <linux/workqueue.h>
  22 #include <linux/errno.h>
  23 #include <linux/list.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/qed/qed_iscsi_if.h>
  26 #include "qed.h"
  27 #include "qed_cxt.h"
  28 #include "qed_dev_api.h"
  29 #include "qed_hsi.h"
  30 #include "qed_hw.h"
  31 #include "qed_int.h"
  32 #include "qed_iro_hsi.h"
  33 #include "qed_iscsi.h"
  34 #include "qed_ll2.h"
  35 #include "qed_mcp.h"
  36 #include "qed_sp.h"
  37 #include "qed_sriov.h"
  38 #include "qed_reg_addr.h"
  39
  40 struct qed_iscsi_conn {
  41         struct list_head list_entry;
  42         bool free_on_delete;
  43
  44         u16 conn_id;
  45         u32 icid;
  46         u32 fw_cid;
  47
  48         u8 layer_code;
  49         u8 offl_flags;
  50         u8 connect_mode;
  51         u32 initial_ack;
  52         dma_addr_t sq_pbl_addr;
  53         struct qed_chain r2tq;
  54         struct qed_chain xhq;
  55         struct qed_chain uhq;
  56
  57         struct tcp_upload_params *tcp_upload_params_virt_addr;
  58         dma_addr_t tcp_upload_params_phys_addr;
  59         struct scsi_terminate_extra_params *queue_cnts_virt_addr;
  60         dma_addr_t queue_cnts_phys_addr;
  61         dma_addr_t syn_phy_addr;
  62
  63         u16 syn_ip_payload_length;
  64         u8 local_mac[6];
  65         u8 remote_mac[6];
  66         u16 vlan_id;
  67         u16 tcp_flags;
  68         u8 ip_version;
  69         u32 remote_ip[4];
  70         u32 local_ip[4];
  71         u8 ka_max_probe_cnt;
  72         u8 dup_ack_theshold;
  73         u32 rcv_next;
  74         u32 snd_una;
  75         u32 snd_next;
  76         u32 snd_max;
  77         u32 snd_wnd;
  78         u32 rcv_wnd;
  79         u32 snd_wl1;
  80         u32 cwnd;
  81         u32 ss_thresh;
  82         u16 srtt;
  83         u16 rtt_var;
  84         u32 ts_recent;
  85         u32 ts_recent_age;
  86         u32 total_rt;
  87         u32 ka_timeout_delta;
  88         u32 rt_timeout_delta;
  89         u8 dup_ack_cnt;
  90         u8 snd_wnd_probe_cnt;
  91         u8 ka_probe_cnt;
  92         u8 rt_cnt;
  93         u32 flow_label;
  94         u32 ka_timeout;
  95         u32 ka_interval;
  96         u32 max_rt_time;
  97         u32 initial_rcv_wnd;
  98         u8 ttl;
  99         u8 tos_or_tc;
 100         u16 remote_port;
 101         u16 local_port;
 102         u16 mss;
 103         u8 snd_wnd_scale;
 104         u8 rcv_wnd_scale;
 105         u16 da_timeout_value;
 106         u8 ack_frequency;
 107
 108         u8 update_flag;
 109         u8 default_cq;
 110         u32 max_seq_size;
 111         u32 max_recv_pdu_length;
 112         u32 max_send_pdu_length;
 113         u32 first_seq_length;
 114         u32 exp_stat_sn;
 115         u32 stat_sn;
 116         u16 physical_q0;
 117         u16 physical_q1;
 118         u8 abortive_dsconnect;
 119 };
 120
 121 static int qed_iscsi_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
 122                                  __le16 echo, union event_ring_data *data,
 123                                  u8 fw_return_code)
 124 {
 125         if (p_hwfn->p_iscsi_info->event_cb) {
 126                 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
 127
 128                 return p_iscsi->event_cb(p_iscsi->event_context,
 129                                          fw_event_code, data);
 130         } else {
 131                 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
 132                 return -EINVAL;
 133         }
 134 }
 135
 136 static int
 137 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
 138                         enum spq_mode comp_mode,
 139                         struct qed_spq_comp_cb *p_comp_addr,
 140                         void *event_context, iscsi_event_cb_t async_event_cb)
 141 {
 142         struct iscsi_init_ramrod_params *p_ramrod = NULL;
 143         struct scsi_init_func_queues *p_queue = NULL;
 144         struct qed_iscsi_pf_params *p_params = NULL;
 145         struct iscsi_spe_func_init *p_init = NULL;
 146         struct qed_spq_entry *p_ent = NULL;
 147         struct qed_sp_init_data init_data;
 148         int rc = 0;
 149         u32 dval;
 150         u16 val;
 151         u8 i;
 152
 153         /* Get SPQ entry */
 154         memset(&init_data, 0, sizeof(init_data));
 155         init_data.cid = qed_spq_get_cid(p_hwfn);
 156         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 157         init_data.comp_mode = comp_mode;
 158         init_data.p_comp_data = p_comp_addr;
 159
 160         rc = qed_sp_init_request(p_hwfn, &p_ent,
 161                                  ISCSI_RAMROD_CMD_ID_INIT_FUNC,
 162                                  PROTOCOLID_TCP_ULP, &init_data);
 163         if (rc)
 164                 return rc;
 165
 166         p_ramrod = &p_ent->ramrod.iscsi_init;
 167         p_init = &p_ramrod->iscsi_init_spe;
 168         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 169         p_queue = &p_init->q_params;
 170
 171         /* Sanity */
 172         if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
 173                 DP_ERR(p_hwfn,
 174                        "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
 175                        p_params->num_queues,
 176                        p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
 177                 qed_sp_destroy_request(p_hwfn, p_ent);
 178                 return -EINVAL;
 179         }
 180
 181         val = p_params->half_way_close_timeout;
 182         p_init->half_way_close_timeout = cpu_to_le16(val);
 183         p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
 184         p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
 185         p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
 186         p_init->ll2_rx_queue_id =
 187             p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] +
 188             p_params->ll2_ooo_queue_id;
 189
 190         p_init->func_params.log_page_size = p_params->log_page_size;
 191         val = p_params->num_tasks;
 192         p_init->func_params.num_tasks = cpu_to_le16(val);
 193         p_init->debug_mode.flags = p_params->debug_mode;
 194
 195         DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
 196                        p_params->glbl_q_params_addr);
 197
 198         val = p_params->cq_num_entries;
 199         p_queue->cq_num_entries = cpu_to_le16(val);
 200         val = p_params->cmdq_num_entries;
 201         p_queue->cmdq_num_entries = cpu_to_le16(val);
 202         p_queue->num_queues = p_params->num_queues;
 203         dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
 204         p_queue->queue_relative_offset = (u8)dval;
 205         p_queue->cq_sb_pi = p_params->gl_rq_pi;
 206         p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
 207
 208         for (i = 0; i < p_params->num_queues; i++) {
 209                 val = qed_get_igu_sb_id(p_hwfn, i);
 210                 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
 211         }
 212
 213         p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
 214
 215         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
 216                        p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
 217         p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
 218             p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
 219         val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
 220         p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 221         val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
 222         p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 223
 224         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
 225                        p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
 226         p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
 227             p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
 228         val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
 229         p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 230         val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
 231         p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 232         val = p_params->rq_buffer_size;
 233         p_queue->rq_buffer_size = cpu_to_le16(val);
 234         if (p_params->is_target) {
 235                 SET_FIELD(p_queue->q_validity,
 236                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 237                 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
 238                         SET_FIELD(p_queue->q_validity,
 239                                   SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
 240                 SET_FIELD(p_queue->q_validity,
 241                           SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
 242         } else {
 243                 SET_FIELD(p_queue->q_validity,
 244                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 245         }
 246         p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
 247         val = p_params->tx_sws_timer;
 248         p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
 249         p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
 250
 251         p_hwfn->p_iscsi_info->event_context = event_context;
 252         p_hwfn->p_iscsi_info->event_cb = async_event_cb;
 253
 254         qed_spq_register_async_cb(p_hwfn, PROTOCOLID_TCP_ULP,
 255                                   qed_iscsi_async_event);
 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         dma_addr_t r2tq_pbl_addr;
 271         dma_addr_t xhq_pbl_addr;
 272         dma_addr_t uhq_pbl_addr;
 273         u16 physical_q;
 274         __le16 tmp;
 275         int rc = 0;
 276         u32 dval;
 277         u16 wval;
 278         u16 *p;
 279         u8 i;
 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_TCP_ULP, &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         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
 298         p_conn->physical_q0 = physical_q;
 299         p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
 300
 301         /* iSCSI Pure-ACK PQ */
 302         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
 303         p_conn->physical_q1 = physical_q;
 304         p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
 305
 306         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 307
 308         DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
 309
 310         r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
 311         DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
 312
 313         xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
 314         DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
 315
 316         uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
 317         DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
 318
 319         p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
 320         p_ramrod->iscsi.flags = p_conn->offl_flags;
 321         p_ramrod->iscsi.default_cq = p_conn->default_cq;
 322         p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
 323
 324         if (!GET_FIELD(p_ramrod->iscsi.flags,
 325                        ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
 326                 p_tcp = &p_ramrod->tcp;
 327
 328                 p = (u16 *)p_conn->local_mac;
 329                 tmp = cpu_to_le16(get_unaligned_be16(p));
 330                 p_tcp->local_mac_addr_hi = tmp;
 331                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 332                 p_tcp->local_mac_addr_mid = tmp;
 333                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 334                 p_tcp->local_mac_addr_lo = tmp;
 335
 336                 p = (u16 *)p_conn->remote_mac;
 337                 tmp = cpu_to_le16(get_unaligned_be16(p));
 338                 p_tcp->remote_mac_addr_hi = tmp;
 339                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 340                 p_tcp->remote_mac_addr_mid = tmp;
 341                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 342                 p_tcp->remote_mac_addr_lo = tmp;
 343
 344                 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
 345
 346                 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
 347                 p_tcp->ip_version = p_conn->ip_version;
 348                 for (i = 0; i < 4; i++) {
 349                         dval = p_conn->remote_ip[i];
 350                         p_tcp->remote_ip[i] = cpu_to_le32(dval);
 351                         dval = p_conn->local_ip[i];
 352                         p_tcp->local_ip[i] = cpu_to_le32(dval);
 353                 }
 354                 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
 355                 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
 356
 357                 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
 358                 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
 359                 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
 360                 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
 361                 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
 362                 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
 363                 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
 364                 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
 365                 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
 366                 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
 367                 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
 368                 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
 369                 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
 370                 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
 371                 dval = p_conn->ka_timeout_delta;
 372                 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
 373                 dval = p_conn->rt_timeout_delta;
 374                 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
 375                 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
 376                 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
 377                 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
 378                 p_tcp->rt_cnt = p_conn->rt_cnt;
 379                 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
 380                 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 381                 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
 382                 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 383                 dval = p_conn->initial_rcv_wnd;
 384                 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
 385                 p_tcp->ttl = p_conn->ttl;
 386                 p_tcp->tos_or_tc = p_conn->tos_or_tc;
 387                 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
 388                 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
 389                 p_tcp->mss = cpu_to_le16(p_conn->mss);
 390                 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
 391                 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 392                 wval = p_conn->da_timeout_value;
 393                 p_tcp->da_timeout_value = cpu_to_le16(wval);
 394                 p_tcp->ack_frequency = p_conn->ack_frequency;
 395                 p_tcp->connect_mode = p_conn->connect_mode;
 396         } else {
 397                 p_tcp2 =
 398                     &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
 399
 400                 p = (u16 *)p_conn->local_mac;
 401                 tmp = cpu_to_le16(get_unaligned_be16(p));
 402                 p_tcp2->local_mac_addr_hi = tmp;
 403                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 404                 p_tcp2->local_mac_addr_mid = tmp;
 405                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 406                 p_tcp2->local_mac_addr_lo = tmp;
 407
 408                 p = (u16 *)p_conn->remote_mac;
 409                 tmp = cpu_to_le16(get_unaligned_be16(p));
 410                 p_tcp2->remote_mac_addr_hi = tmp;
 411                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 412                 p_tcp2->remote_mac_addr_mid = tmp;
 413                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 414                 p_tcp2->remote_mac_addr_lo = tmp;
 415
 416                 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
 417                 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
 418
 419                 p_tcp2->ip_version = p_conn->ip_version;
 420                 for (i = 0; i < 4; i++) {
 421                         dval = p_conn->remote_ip[i];
 422                         p_tcp2->remote_ip[i] = cpu_to_le32(dval);
 423                         dval = p_conn->local_ip[i];
 424                         p_tcp2->local_ip[i] = cpu_to_le32(dval);
 425                 }
 426
 427                 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
 428                 p_tcp2->ttl = p_conn->ttl;
 429                 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
 430                 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
 431                 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
 432                 p_tcp2->mss = cpu_to_le16(p_conn->mss);
 433                 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 434                 p_tcp2->connect_mode = p_conn->connect_mode;
 435                 wval = p_conn->syn_ip_payload_length;
 436                 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
 437                 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
 438                 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
 439                 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
 440                 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
 441                 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 442                 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 443                 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
 444         }
 445
 446         return qed_spq_post(p_hwfn, p_ent, NULL);
 447 }
 448
 449 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
 450                                     struct qed_iscsi_conn *p_conn,
 451                                     enum spq_mode comp_mode,
 452                                     struct qed_spq_comp_cb *p_comp_addr)
 453 {
 454         struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
 455         struct qed_spq_entry *p_ent = NULL;
 456         struct qed_sp_init_data init_data;
 457         int rc;
 458         u32 dval;
 459
 460         /* Get SPQ entry */
 461         memset(&init_data, 0, sizeof(init_data));
 462         init_data.cid = p_conn->icid;
 463         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 464         init_data.comp_mode = comp_mode;
 465         init_data.p_comp_data = p_comp_addr;
 466
 467         rc = qed_sp_init_request(p_hwfn, &p_ent,
 468                                  ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
 469                                  PROTOCOLID_TCP_ULP, &init_data);
 470         if (rc)
 471                 return rc;
 472
 473         p_ramrod = &p_ent->ramrod.iscsi_conn_update;
 474
 475         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 476         p_ramrod->flags = p_conn->update_flag;
 477         p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
 478         dval = p_conn->max_recv_pdu_length;
 479         p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
 480         dval = p_conn->max_send_pdu_length;
 481         p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
 482         dval = p_conn->first_seq_length;
 483         p_ramrod->first_seq_length = cpu_to_le32(dval);
 484         p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
 485
 486         return qed_spq_post(p_hwfn, p_ent, NULL);
 487 }
 488
 489 static int
 490 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
 491                         struct qed_iscsi_conn *p_conn,
 492                         enum spq_mode comp_mode,
 493                         struct qed_spq_comp_cb *p_comp_addr)
 494 {
 495         struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
 496         struct qed_spq_entry *p_ent = NULL;
 497         struct qed_sp_init_data init_data;
 498         int rc = -EINVAL;
 499         u8 ucval;
 500
 501         /* Get SPQ entry */
 502         memset(&init_data, 0, sizeof(init_data));
 503         init_data.cid = p_conn->icid;
 504         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 505         init_data.comp_mode = comp_mode;
 506         init_data.p_comp_data = p_comp_addr;
 507
 508         rc = qed_sp_init_request(p_hwfn, &p_ent,
 509                                  ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
 510                                  PROTOCOLID_TCP_ULP, &init_data);
 511         if (rc)
 512                 return rc;
 513
 514         p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
 515
 516         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 517         ucval = p_conn->remote_mac[1];
 518         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
 519         ucval = p_conn->remote_mac[0];
 520         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
 521         ucval = p_conn->remote_mac[3];
 522         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
 523         ucval = p_conn->remote_mac[2];
 524         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
 525         ucval = p_conn->remote_mac[5];
 526         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
 527         ucval = p_conn->remote_mac[4];
 528         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
 529
 530         return qed_spq_post(p_hwfn, p_ent, NULL);
 531 }
 532
 533 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
 534                                        struct qed_iscsi_conn *p_conn,
 535                                        enum spq_mode comp_mode,
 536                                        struct qed_spq_comp_cb *p_comp_addr)
 537 {
 538         struct iscsi_spe_conn_termination *p_ramrod = NULL;
 539         struct qed_spq_entry *p_ent = NULL;
 540         struct qed_sp_init_data init_data;
 541         int rc = -EINVAL;
 542
 543         /* Get SPQ entry */
 544         memset(&init_data, 0, sizeof(init_data));
 545         init_data.cid = p_conn->icid;
 546         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 547         init_data.comp_mode = comp_mode;
 548         init_data.p_comp_data = p_comp_addr;
 549
 550         rc = qed_sp_init_request(p_hwfn, &p_ent,
 551                                  ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
 552                                  PROTOCOLID_TCP_ULP, &init_data);
 553         if (rc)
 554                 return rc;
 555
 556         p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
 557
 558         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 559         p_ramrod->abortive = p_conn->abortive_dsconnect;
 560
 561         DMA_REGPAIR_LE(p_ramrod->query_params_addr,
 562                        p_conn->tcp_upload_params_phys_addr);
 563         DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
 564
 565         return qed_spq_post(p_hwfn, p_ent, NULL);
 566 }
 567
 568 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
 569                                       struct qed_iscsi_conn *p_conn,
 570                                       enum spq_mode comp_mode,
 571                                       struct qed_spq_comp_cb *p_comp_addr)
 572 {
 573         struct qed_spq_entry *p_ent = NULL;
 574         struct qed_sp_init_data init_data;
 575         int rc = -EINVAL;
 576
 577         /* Get SPQ entry */
 578         memset(&init_data, 0, sizeof(init_data));
 579         init_data.cid = p_conn->icid;
 580         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 581         init_data.comp_mode = comp_mode;
 582         init_data.p_comp_data = p_comp_addr;
 583
 584         rc = qed_sp_init_request(p_hwfn, &p_ent,
 585                                  ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
 586                                  PROTOCOLID_TCP_ULP, &init_data);
 587         if (rc)
 588                 return rc;
 589
 590         return qed_spq_post(p_hwfn, p_ent, NULL);
 591 }
 592
 593 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
 594                                   enum spq_mode comp_mode,
 595                                   struct qed_spq_comp_cb *p_comp_addr)
 596 {
 597         struct qed_spq_entry *p_ent = NULL;
 598         struct qed_sp_init_data init_data;
 599         int rc = 0;
 600
 601         /* Get SPQ entry */
 602         memset(&init_data, 0, sizeof(init_data));
 603         init_data.cid = qed_spq_get_cid(p_hwfn);
 604         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 605         init_data.comp_mode = comp_mode;
 606         init_data.p_comp_data = p_comp_addr;
 607
 608         rc = qed_sp_init_request(p_hwfn, &p_ent,
 609                                  ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
 610                                  PROTOCOLID_TCP_ULP, &init_data);
 611         if (rc)
 612                 return rc;
 613
 614         rc = qed_spq_post(p_hwfn, p_ent, NULL);
 615
 616         qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_TCP_ULP);
 617         return rc;
 618 }
 619
 620 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
 621 {
 622         return (u8 __iomem *)p_hwfn->doorbells +
 623                              qed_db_addr(cid, DQ_DEMS_LEGACY);
 624 }
 625
 626 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
 627                                                     u8 bdq_id)
 628 {
 629         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 630                 return (u8 __iomem *)p_hwfn->regview +
 631                     GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_MSDM_RAM,
 632                                          MSTORM_SCSI_BDQ_EXT_PROD,
 633                                          RESC_START(p_hwfn, QED_BDQ), bdq_id);
 634         } else {
 635                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 636                 return NULL;
 637         }
 638 }
 639
 640 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
 641                                                       u8 bdq_id)
 642 {
 643         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 644                 return (u8 __iomem *)p_hwfn->regview +
 645                     GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_TSDM_RAM,
 646                                          TSTORM_SCSI_BDQ_EXT_PROD,
 647                                          RESC_START(p_hwfn, QED_BDQ), bdq_id);
 648         } else {
 649                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 650                 return NULL;
 651         }
 652 }
 653
 654 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
 655 {
 656         if (!p_conn->queue_cnts_virt_addr)
 657                 goto nomem;
 658         memset(p_conn->queue_cnts_virt_addr, 0,
 659                sizeof(*p_conn->queue_cnts_virt_addr));
 660
 661         if (!p_conn->tcp_upload_params_virt_addr)
 662                 goto nomem;
 663         memset(p_conn->tcp_upload_params_virt_addr, 0,
 664                sizeof(*p_conn->tcp_upload_params_virt_addr));
 665
 666         if (!p_conn->r2tq.p_virt_addr)
 667                 goto nomem;
 668         qed_chain_pbl_zero_mem(&p_conn->r2tq);
 669
 670         if (!p_conn->uhq.p_virt_addr)
 671                 goto nomem;
 672         qed_chain_pbl_zero_mem(&p_conn->uhq);
 673
 674         if (!p_conn->xhq.p_virt_addr)
 675                 goto nomem;
 676         qed_chain_pbl_zero_mem(&p_conn->xhq);
 677
 678         return 0;
 679 nomem:
 680         return -ENOMEM;
 681 }
 682
 683 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
 684                                          struct qed_iscsi_conn **p_out_conn)
 685 {
 686         struct scsi_terminate_extra_params *p_q_cnts = NULL;
 687         struct qed_iscsi_pf_params *p_params = NULL;
 688         struct qed_chain_init_params params = {
 689                 .mode           = QED_CHAIN_MODE_PBL,
 690                 .intended_use   = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 691                 .cnt_type       = QED_CHAIN_CNT_TYPE_U16,
 692         };
 693         struct tcp_upload_params *p_tcp = NULL;
 694         struct qed_iscsi_conn *p_conn = NULL;
 695         int rc = 0;
 696
 697         /* Try finding a free connection that can be used */
 698         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 699         if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
 700                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 701                                           struct qed_iscsi_conn, list_entry);
 702         if (p_conn) {
 703                 list_del(&p_conn->list_entry);
 704                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 705                 *p_out_conn = p_conn;
 706                 return 0;
 707         }
 708         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 709
 710         /* Need to allocate a new connection */
 711         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 712
 713         p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
 714         if (!p_conn)
 715                 return -ENOMEM;
 716
 717         p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 718                                       sizeof(*p_q_cnts),
 719                                       &p_conn->queue_cnts_phys_addr,
 720                                       GFP_KERNEL);
 721         if (!p_q_cnts)
 722                 goto nomem_queue_cnts_param;
 723         p_conn->queue_cnts_virt_addr = p_q_cnts;
 724
 725         p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 726                                    sizeof(*p_tcp),
 727                                    &p_conn->tcp_upload_params_phys_addr,
 728                                    GFP_KERNEL);
 729         if (!p_tcp)
 730                 goto nomem_upload_param;
 731         p_conn->tcp_upload_params_virt_addr = p_tcp;
 732
 733         params.num_elems = p_params->num_r2tq_pages_in_ring *
 734                            QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_wqe);
 735         params.elem_size = sizeof(struct iscsi_wqe);
 736
 737         rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->r2tq, &params);
 738         if (rc)
 739                 goto nomem_r2tq;
 740
 741         params.num_elems = p_params->num_uhq_pages_in_ring *
 742                            QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
 743         params.elem_size = sizeof(struct iscsi_uhqe);
 744
 745         rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->uhq, &params);
 746         if (rc)
 747                 goto nomem_uhq;
 748
 749         params.elem_size = sizeof(struct iscsi_xhqe);
 750
 751         rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->xhq, &params);
 752         if (rc)
 753                 goto nomem;
 754
 755         p_conn->free_on_delete = true;
 756         *p_out_conn = p_conn;
 757         return 0;
 758
 759 nomem:
 760         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 761 nomem_uhq:
 762         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 763 nomem_r2tq:
 764         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 765                           sizeof(struct tcp_upload_params),
 766                           p_conn->tcp_upload_params_virt_addr,
 767                           p_conn->tcp_upload_params_phys_addr);
 768 nomem_upload_param:
 769         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 770                           sizeof(struct scsi_terminate_extra_params),
 771                           p_conn->queue_cnts_virt_addr,
 772                           p_conn->queue_cnts_phys_addr);
 773 nomem_queue_cnts_param:
 774         kfree(p_conn);
 775
 776         return -ENOMEM;
 777 }
 778
 779 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
 780                                         struct qed_iscsi_conn *p_in_conn,
 781                                         struct qed_iscsi_conn **p_out_conn)
 782 {
 783         struct qed_iscsi_conn *p_conn = NULL;
 784         int rc = 0;
 785         u32 icid;
 786
 787         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 788         rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_TCP_ULP, &icid);
 789         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 790         if (rc)
 791                 return rc;
 792
 793         /* Use input connection or allocate a new one */
 794         if (p_in_conn)
 795                 p_conn = p_in_conn;
 796         else
 797                 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
 798
 799         if (!rc)
 800                 rc = qed_iscsi_setup_connection(p_conn);
 801
 802         if (rc) {
 803                 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 804                 qed_cxt_release_cid(p_hwfn, icid);
 805                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 806                 return rc;
 807         }
 808
 809         p_conn->icid = icid;
 810         p_conn->conn_id = (u16)icid;
 811         p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
 812
 813         *p_out_conn = p_conn;
 814
 815         return rc;
 816 }
 817
 818 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
 819                                          struct qed_iscsi_conn *p_conn)
 820 {
 821         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 822         list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
 823         qed_cxt_release_cid(p_hwfn, p_conn->icid);
 824         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 825 }
 826
 827 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
 828                                       struct qed_iscsi_conn *p_conn)
 829 {
 830         qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
 831         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 832         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 833         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 834                           sizeof(struct tcp_upload_params),
 835                           p_conn->tcp_upload_params_virt_addr,
 836                           p_conn->tcp_upload_params_phys_addr);
 837         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 838                           sizeof(struct scsi_terminate_extra_params),
 839                           p_conn->queue_cnts_virt_addr,
 840                           p_conn->queue_cnts_phys_addr);
 841         kfree(p_conn);
 842 }
 843
 844 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
 845 {
 846         struct qed_iscsi_info *p_iscsi_info;
 847
 848         p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
 849         if (!p_iscsi_info)
 850                 return -ENOMEM;
 851
 852         INIT_LIST_HEAD(&p_iscsi_info->free_list);
 853
 854         p_hwfn->p_iscsi_info = p_iscsi_info;
 855         return 0;
 856 }
 857
 858 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
 859 {
 860         spin_lock_init(&p_hwfn->p_iscsi_info->lock);
 861 }
 862
 863 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
 864 {
 865         struct qed_iscsi_conn *p_conn = NULL;
 866
 867         if (!p_hwfn->p_iscsi_info)
 868                 return;
 869
 870         while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
 871                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 872                                           struct qed_iscsi_conn, list_entry);
 873                 if (p_conn) {
 874                         list_del(&p_conn->list_entry);
 875                         qed_iscsi_free_connection(p_hwfn, p_conn);
 876                 }
 877         }
 878
 879         kfree(p_hwfn->p_iscsi_info);
 880         p_hwfn->p_iscsi_info = NULL;
 881 }
 882
 883 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
 884                                   struct qed_ptt *p_ptt,
 885                                   struct qed_iscsi_stats *p_stats)
 886 {
 887         struct tstorm_iscsi_stats_drv tstats;
 888         u32 tstats_addr;
 889
 890         memset(&tstats, 0, sizeof(tstats));
 891         tstats_addr = BAR0_MAP_REG_TSDM_RAM +
 892                       TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 893         qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
 894
 895         p_stats->iscsi_rx_bytes_cnt =
 896             HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
 897         p_stats->iscsi_rx_packet_cnt =
 898             HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
 899         p_stats->iscsi_rx_new_ooo_isle_events_cnt =
 900             HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
 901         p_stats->iscsi_cmdq_threshold_cnt =
 902             le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
 903         p_stats->iscsi_rq_threshold_cnt =
 904             le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
 905         p_stats->iscsi_immq_threshold_cnt =
 906             le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
 907 }
 908
 909 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
 910                                   struct qed_ptt *p_ptt,
 911                                   struct qed_iscsi_stats *p_stats)
 912 {
 913         struct mstorm_iscsi_stats_drv mstats;
 914         u32 mstats_addr;
 915
 916         memset(&mstats, 0, sizeof(mstats));
 917         mstats_addr = BAR0_MAP_REG_MSDM_RAM +
 918                       MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 919         qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
 920
 921         p_stats->iscsi_rx_dropped_pdus_task_not_valid =
 922             HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
 923 }
 924
 925 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
 926                                   struct qed_ptt *p_ptt,
 927                                   struct qed_iscsi_stats *p_stats)
 928 {
 929         struct ustorm_iscsi_stats_drv ustats;
 930         u32 ustats_addr;
 931
 932         memset(&ustats, 0, sizeof(ustats));
 933         ustats_addr = BAR0_MAP_REG_USDM_RAM +
 934                       USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 935         qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
 936
 937         p_stats->iscsi_rx_data_pdu_cnt =
 938             HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
 939         p_stats->iscsi_rx_r2t_pdu_cnt =
 940             HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
 941         p_stats->iscsi_rx_total_pdu_cnt =
 942             HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
 943 }
 944
 945 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
 946                                   struct qed_ptt *p_ptt,
 947                                   struct qed_iscsi_stats *p_stats)
 948 {
 949         struct xstorm_iscsi_stats_drv xstats;
 950         u32 xstats_addr;
 951
 952         memset(&xstats, 0, sizeof(xstats));
 953         xstats_addr = BAR0_MAP_REG_XSDM_RAM +
 954                       XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 955         qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
 956
 957         p_stats->iscsi_tx_go_to_slow_start_event_cnt =
 958             HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
 959         p_stats->iscsi_tx_fast_retransmit_event_cnt =
 960             HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
 961 }
 962
 963 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
 964                                   struct qed_ptt *p_ptt,
 965                                   struct qed_iscsi_stats *p_stats)
 966 {
 967         struct ystorm_iscsi_stats_drv ystats;
 968         u32 ystats_addr;
 969
 970         memset(&ystats, 0, sizeof(ystats));
 971         ystats_addr = BAR0_MAP_REG_YSDM_RAM +
 972                       YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 973         qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
 974
 975         p_stats->iscsi_tx_data_pdu_cnt =
 976             HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
 977         p_stats->iscsi_tx_r2t_pdu_cnt =
 978             HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
 979         p_stats->iscsi_tx_total_pdu_cnt =
 980             HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
 981 }
 982
 983 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
 984                                   struct qed_ptt *p_ptt,
 985                                   struct qed_iscsi_stats *p_stats)
 986 {
 987         struct pstorm_iscsi_stats_drv pstats;
 988         u32 pstats_addr;
 989
 990         memset(&pstats, 0, sizeof(pstats));
 991         pstats_addr = BAR0_MAP_REG_PSDM_RAM +
 992                       PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 993         qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
 994
 995         p_stats->iscsi_tx_bytes_cnt =
 996             HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
 997         p_stats->iscsi_tx_packet_cnt =
 998             HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
 999 }
1000
1001 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1002                                struct qed_iscsi_stats *stats,
1003                                bool is_atomic)
1004 {
1005         struct qed_ptt *p_ptt;
1006
1007         memset(stats, 0, sizeof(*stats));
1008
1009         p_ptt = qed_ptt_acquire_context(p_hwfn, is_atomic);
1010         if (!p_ptt) {
1011                 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1012                 return -EAGAIN;
1013         }
1014
1015         _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1016         _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1017         _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1018
1019         _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1020         _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1021         _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1022
1023         qed_ptt_release(p_hwfn, p_ptt);
1024
1025         return 0;
1026 }
1027
1028 struct qed_hash_iscsi_con {
1029         struct hlist_node node;
1030         struct qed_iscsi_conn *con;
1031 };
1032
1033 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1034                                    struct qed_dev_iscsi_info *info)
1035 {
1036         struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
1037
1038         int rc;
1039
1040         memset(info, 0, sizeof(*info));
1041         rc = qed_fill_dev_info(cdev, &info->common);
1042
1043         info->primary_dbq_rq_addr =
1044             qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1045         info->secondary_bdq_rq_addr =
1046             qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1047
1048         info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1049
1050         return rc;
1051 }
1052
1053 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1054                                    struct qed_iscsi_cb_ops *ops, void *cookie)
1055 {
1056         cdev->protocol_ops.iscsi = ops;
1057         cdev->ops_cookie = cookie;
1058 }
1059
1060 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1061                                                      u32 handle)
1062 {
1063         struct qed_hash_iscsi_con *hash_con = NULL;
1064
1065         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1066                 return NULL;
1067
1068         hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1069                 if (hash_con->con->icid == handle)
1070                         break;
1071         }
1072
1073         if (!hash_con || (hash_con->con->icid != handle))
1074                 return NULL;
1075
1076         return hash_con;
1077 }
1078
1079 static int qed_iscsi_stop(struct qed_dev *cdev)
1080 {
1081         int rc;
1082
1083         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1084                 DP_NOTICE(cdev, "iscsi already stopped\n");
1085                 return 0;
1086         }
1087
1088         if (!hash_empty(cdev->connections)) {
1089                 DP_NOTICE(cdev,
1090                           "Can't stop iscsi - not all connections were returned\n");
1091                 return -EINVAL;
1092         }
1093
1094         /* Stop the iscsi */
1095         rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1096                                     NULL);
1097         cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1098
1099         return rc;
1100 }
1101
1102 static int qed_iscsi_start(struct qed_dev *cdev,
1103                            struct qed_iscsi_tid *tasks,
1104                            void *event_context,
1105                            iscsi_event_cb_t async_event_cb)
1106 {
1107         int rc;
1108         struct qed_tid_mem *tid_info;
1109
1110         if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1111                 DP_NOTICE(cdev, "iscsi already started;\n");
1112                 return 0;
1113         }
1114
1115         rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1116                                      NULL, event_context, async_event_cb);
1117         if (rc) {
1118                 DP_NOTICE(cdev, "Failed to start iscsi\n");
1119                 return rc;
1120         }
1121
1122         cdev->flags |= QED_FLAG_STORAGE_STARTED;
1123         hash_init(cdev->connections);
1124
1125         if (!tasks)
1126                 return 0;
1127
1128         tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1129
1130         if (!tid_info) {
1131                 qed_iscsi_stop(cdev);
1132                 return -ENOMEM;
1133         }
1134
1135         rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
1136         if (rc) {
1137                 DP_NOTICE(cdev, "Failed to gather task information\n");
1138                 qed_iscsi_stop(cdev);
1139                 kfree(tid_info);
1140                 return rc;
1141         }
1142
1143         /* Fill task information */
1144         tasks->size = tid_info->tid_size;
1145         tasks->num_tids_per_block = tid_info->num_tids_per_block;
1146         memcpy(tasks->blocks, tid_info->blocks,
1147                MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1148
1149         kfree(tid_info);
1150
1151         return 0;
1152 }
1153
1154 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1155                                   u32 *handle,
1156                                   u32 *fw_cid, void __iomem **p_doorbell)
1157 {
1158         struct qed_hash_iscsi_con *hash_con;
1159         int rc;
1160
1161         /* Allocate a hashed connection */
1162         hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1163         if (!hash_con)
1164                 return -ENOMEM;
1165
1166         /* Acquire the connection */
1167         rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
1168                                           &hash_con->con);
1169         if (rc) {
1170                 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1171                 kfree(hash_con);
1172                 return rc;
1173         }
1174
1175         /* Added the connection to hash table */
1176         *handle = hash_con->con->icid;
1177         *fw_cid = hash_con->con->fw_cid;
1178         hash_add(cdev->connections, &hash_con->node, *handle);
1179
1180         if (p_doorbell)
1181                 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev),
1182                                                     *handle);
1183
1184         return 0;
1185 }
1186
1187 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1188 {
1189         struct qed_hash_iscsi_con *hash_con;
1190
1191         hash_con = qed_iscsi_get_hash(cdev, handle);
1192         if (!hash_con) {
1193                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1194                           handle);
1195                 return -EINVAL;
1196         }
1197
1198         hlist_del(&hash_con->node);
1199         qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
1200         kfree(hash_con);
1201
1202         return 0;
1203 }
1204
1205 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1206                                   u32 handle,
1207                                   struct qed_iscsi_params_offload *conn_info)
1208 {
1209         struct qed_hash_iscsi_con *hash_con;
1210         struct qed_iscsi_conn *con;
1211
1212         hash_con = qed_iscsi_get_hash(cdev, handle);
1213         if (!hash_con) {
1214                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1215                           handle);
1216                 return -EINVAL;
1217         }
1218
1219         /* Update the connection with information from the params */
1220         con = hash_con->con;
1221
1222         ether_addr_copy(con->local_mac, conn_info->src.mac);
1223         ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1224         memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1225         memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1226         con->local_port = conn_info->src.port;
1227         con->remote_port = conn_info->dst.port;
1228
1229         con->layer_code = conn_info->layer_code;
1230         con->sq_pbl_addr = conn_info->sq_pbl_addr;
1231         con->initial_ack = conn_info->initial_ack;
1232         con->vlan_id = conn_info->vlan_id;
1233         con->tcp_flags = conn_info->tcp_flags;
1234         con->ip_version = conn_info->ip_version;
1235         con->default_cq = conn_info->default_cq;
1236         con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1237         con->dup_ack_theshold = conn_info->dup_ack_theshold;
1238         con->rcv_next = conn_info->rcv_next;
1239         con->snd_una = conn_info->snd_una;
1240         con->snd_next = conn_info->snd_next;
1241         con->snd_max = conn_info->snd_max;
1242         con->snd_wnd = conn_info->snd_wnd;
1243         con->rcv_wnd = conn_info->rcv_wnd;
1244         con->snd_wl1 = conn_info->snd_wl1;
1245         con->cwnd = conn_info->cwnd;
1246         con->ss_thresh = conn_info->ss_thresh;
1247         con->srtt = conn_info->srtt;
1248         con->rtt_var = conn_info->rtt_var;
1249         con->ts_recent = conn_info->ts_recent;
1250         con->ts_recent_age = conn_info->ts_recent_age;
1251         con->total_rt = conn_info->total_rt;
1252         con->ka_timeout_delta = conn_info->ka_timeout_delta;
1253         con->rt_timeout_delta = conn_info->rt_timeout_delta;
1254         con->dup_ack_cnt = conn_info->dup_ack_cnt;
1255         con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1256         con->ka_probe_cnt = conn_info->ka_probe_cnt;
1257         con->rt_cnt = conn_info->rt_cnt;
1258         con->flow_label = conn_info->flow_label;
1259         con->ka_timeout = conn_info->ka_timeout;
1260         con->ka_interval = conn_info->ka_interval;
1261         con->max_rt_time = conn_info->max_rt_time;
1262         con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1263         con->ttl = conn_info->ttl;
1264         con->tos_or_tc = conn_info->tos_or_tc;
1265         con->remote_port = conn_info->remote_port;
1266         con->local_port = conn_info->local_port;
1267         con->mss = conn_info->mss;
1268         con->snd_wnd_scale = conn_info->snd_wnd_scale;
1269         con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1270         con->da_timeout_value = conn_info->da_timeout_value;
1271         con->ack_frequency = conn_info->ack_frequency;
1272
1273         /* Set default values on other connection fields */
1274         con->offl_flags = 0x1;
1275
1276         return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con,
1277                                          QED_SPQ_MODE_EBLOCK, NULL);
1278 }
1279
1280 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1281                                  u32 handle,
1282                                  struct qed_iscsi_params_update *conn_info)
1283 {
1284         struct qed_hash_iscsi_con *hash_con;
1285         struct qed_iscsi_conn *con;
1286
1287         hash_con = qed_iscsi_get_hash(cdev, handle);
1288         if (!hash_con) {
1289                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1290                           handle);
1291                 return -EINVAL;
1292         }
1293
1294         /* Update the connection with information from the params */
1295         con = hash_con->con;
1296         con->update_flag = conn_info->update_flag;
1297         con->max_seq_size = conn_info->max_seq_size;
1298         con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1299         con->max_send_pdu_length = conn_info->max_send_pdu_length;
1300         con->first_seq_length = conn_info->first_seq_length;
1301         con->exp_stat_sn = conn_info->exp_stat_sn;
1302
1303         return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con,
1304                                         QED_SPQ_MODE_EBLOCK, NULL);
1305 }
1306
1307 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1308 {
1309         struct qed_hash_iscsi_con *hash_con;
1310
1311         hash_con = qed_iscsi_get_hash(cdev, handle);
1312         if (!hash_con) {
1313                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1314                           handle);
1315                 return -EINVAL;
1316         }
1317
1318         return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
1319                                           QED_SPQ_MODE_EBLOCK, NULL);
1320 }
1321
1322 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1323                                   u32 handle, u8 abrt_conn)
1324 {
1325         struct qed_hash_iscsi_con *hash_con;
1326
1327         hash_con = qed_iscsi_get_hash(cdev, handle);
1328         if (!hash_con) {
1329                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1330                           handle);
1331                 return -EINVAL;
1332         }
1333
1334         hash_con->con->abortive_dsconnect = abrt_conn;
1335
1336         return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
1337                                            QED_SPQ_MODE_EBLOCK, NULL);
1338 }
1339
1340 static int qed_iscsi_stats_context(struct qed_dev *cdev,
1341                                    struct qed_iscsi_stats *stats,
1342                                    bool is_atomic)
1343 {
1344         return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats, is_atomic);
1345 }
1346
1347 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1348 {
1349         return qed_iscsi_stats_context(cdev, stats, false);
1350 }
1351
1352 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1353                                 u32 handle, const u8 *mac)
1354 {
1355         struct qed_hash_iscsi_con *hash_con;
1356
1357         hash_con = qed_iscsi_get_hash(cdev, handle);
1358         if (!hash_con) {
1359                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1360                           handle);
1361                 return -EINVAL;
1362         }
1363
1364         return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con,
1365                                        QED_SPQ_MODE_EBLOCK, NULL);
1366 }
1367
1368 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1369                                   struct qed_mcp_iscsi_stats *stats,
1370                                   bool is_atomic)
1371 {
1372         struct qed_iscsi_stats proto_stats;
1373
1374         /* Retrieve FW statistics */
1375         memset(&proto_stats, 0, sizeof(proto_stats));
1376         if (qed_iscsi_stats_context(cdev, &proto_stats, is_atomic)) {
1377                 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1378                            "Failed to collect ISCSI statistics\n");
1379                 return;
1380         }
1381
1382         /* Translate FW statistics into struct */
1383         stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1384         stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1385         stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1386         stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1387 }
1388
1389 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1390         .common = &qed_common_ops_pass,
1391         .ll2 = &qed_ll2_ops_pass,
1392         .fill_dev_info = &qed_fill_iscsi_dev_info,
1393         .register_ops = &qed_register_iscsi_ops,
1394         .start = &qed_iscsi_start,
1395         .stop = &qed_iscsi_stop,
1396         .acquire_conn = &qed_iscsi_acquire_conn,
1397         .release_conn = &qed_iscsi_release_conn,
1398         .offload_conn = &qed_iscsi_offload_conn,
1399         .update_conn = &qed_iscsi_update_conn,
1400         .destroy_conn = &qed_iscsi_destroy_conn,
1401         .clear_sq = &qed_iscsi_clear_conn_sq,
1402         .get_stats = &qed_iscsi_stats,
1403         .change_mac = &qed_iscsi_change_mac,
1404 };
1405
1406 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1407 {
1408         return &qed_iscsi_ops_pass;
1409 }
1410 EXPORT_SYMBOL(qed_get_iscsi_ops);
1411
1412 void qed_put_iscsi_ops(void)
1413 {
1414 }
1415 EXPORT_SYMBOL(qed_put_iscsi_ops);