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_iscsi.h"
  33 #include "qed_ll2.h"
  34 #include "qed_mcp.h"
  35 #include "qed_sp.h"
  36 #include "qed_sriov.h"
  37 #include "qed_reg_addr.h"
  38
  39 struct qed_iscsi_conn {
  40         struct list_head list_entry;
  41         bool free_on_delete;
  42
  43         u16 conn_id;
  44         u32 icid;
  45         u32 fw_cid;
  46
  47         u8 layer_code;
  48         u8 offl_flags;
  49         u8 connect_mode;
  50         u32 initial_ack;
  51         dma_addr_t sq_pbl_addr;
  52         struct qed_chain r2tq;
  53         struct qed_chain xhq;
  54         struct qed_chain uhq;
  55
  56         struct tcp_upload_params *tcp_upload_params_virt_addr;
  57         dma_addr_t tcp_upload_params_phys_addr;
  58         struct scsi_terminate_extra_params *queue_cnts_virt_addr;
  59         dma_addr_t queue_cnts_phys_addr;
  60         dma_addr_t syn_phy_addr;
  61
  62         u16 syn_ip_payload_length;
  63         u8 local_mac[6];
  64         u8 remote_mac[6];
  65         u16 vlan_id;
  66         u16 tcp_flags;
  67         u8 ip_version;
  68         u32 remote_ip[4];
  69         u32 local_ip[4];
  70         u8 ka_max_probe_cnt;
  71         u8 dup_ack_theshold;
  72         u32 rcv_next;
  73         u32 snd_una;
  74         u32 snd_next;
  75         u32 snd_max;
  76         u32 snd_wnd;
  77         u32 rcv_wnd;
  78         u32 snd_wl1;
  79         u32 cwnd;
  80         u32 ss_thresh;
  81         u16 srtt;
  82         u16 rtt_var;
  83         u32 ts_recent;
  84         u32 ts_recent_age;
  85         u32 total_rt;
  86         u32 ka_timeout_delta;
  87         u32 rt_timeout_delta;
  88         u8 dup_ack_cnt;
  89         u8 snd_wnd_probe_cnt;
  90         u8 ka_probe_cnt;
  91         u8 rt_cnt;
  92         u32 flow_label;
  93         u32 ka_timeout;
  94         u32 ka_interval;
  95         u32 max_rt_time;
  96         u32 initial_rcv_wnd;
  97         u8 ttl;
  98         u8 tos_or_tc;
  99         u16 remote_port;
 100         u16 local_port;
 101         u16 mss;
 102         u8 snd_wnd_scale;
 103         u8 rcv_wnd_scale;
 104         u16 da_timeout_value;
 105         u8 ack_frequency;
 106
 107         u8 update_flag;
 108         u8 default_cq;
 109         u32 max_seq_size;
 110         u32 max_recv_pdu_length;
 111         u32 max_send_pdu_length;
 112         u32 first_seq_length;
 113         u32 exp_stat_sn;
 114         u32 stat_sn;
 115         u16 physical_q0;
 116         u16 physical_q1;
 117         u8 abortive_dsconnect;
 118 };
 119
 120 static int qed_iscsi_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
 121                                  __le16 echo, union event_ring_data *data,
 122                                  u8 fw_return_code)
 123 {
 124         if (p_hwfn->p_iscsi_info->event_cb) {
 125                 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
 126
 127                 return p_iscsi->event_cb(p_iscsi->event_context,
 128                                          fw_event_code, data);
 129         } else {
 130                 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
 131                 return -EINVAL;
 132         }
 133 }
 134
 135 static int
 136 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
 137                         enum spq_mode comp_mode,
 138                         struct qed_spq_comp_cb *p_comp_addr,
 139                         void *event_context, iscsi_event_cb_t async_event_cb)
 140 {
 141         struct iscsi_init_ramrod_params *p_ramrod = NULL;
 142         struct scsi_init_func_queues *p_queue = NULL;
 143         struct qed_iscsi_pf_params *p_params = NULL;
 144         struct iscsi_spe_func_init *p_init = NULL;
 145         struct qed_spq_entry *p_ent = NULL;
 146         struct qed_sp_init_data init_data;
 147         int rc = 0;
 148         u32 dval;
 149         u16 val;
 150         u8 i;
 151
 152         /* Get SPQ entry */
 153         memset(&init_data, 0, sizeof(init_data));
 154         init_data.cid = qed_spq_get_cid(p_hwfn);
 155         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 156         init_data.comp_mode = comp_mode;
 157         init_data.p_comp_data = p_comp_addr;
 158
 159         rc = qed_sp_init_request(p_hwfn, &p_ent,
 160                                  ISCSI_RAMROD_CMD_ID_INIT_FUNC,
 161                                  PROTOCOLID_ISCSI, &init_data);
 162         if (rc)
 163                 return rc;
 164
 165         p_ramrod = &p_ent->ramrod.iscsi_init;
 166         p_init = &p_ramrod->iscsi_init_spe;
 167         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 168         p_queue = &p_init->q_params;
 169
 170         /* Sanity */
 171         if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
 172                 DP_ERR(p_hwfn,
 173                        "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
 174                        p_params->num_queues,
 175                        p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
 176                 qed_sp_destroy_request(p_hwfn, p_ent);
 177                 return -EINVAL;
 178         }
 179
 180         val = p_params->half_way_close_timeout;
 181         p_init->half_way_close_timeout = cpu_to_le16(val);
 182         p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
 183         p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
 184         p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
 185         p_init->ll2_rx_queue_id =
 186             p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] +
 187             p_params->ll2_ooo_queue_id;
 188
 189         p_init->func_params.log_page_size = p_params->log_page_size;
 190         val = p_params->num_tasks;
 191         p_init->func_params.num_tasks = cpu_to_le16(val);
 192         p_init->debug_mode.flags = p_params->debug_mode;
 193
 194         DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
 195                        p_params->glbl_q_params_addr);
 196
 197         val = p_params->cq_num_entries;
 198         p_queue->cq_num_entries = cpu_to_le16(val);
 199         val = p_params->cmdq_num_entries;
 200         p_queue->cmdq_num_entries = cpu_to_le16(val);
 201         p_queue->num_queues = p_params->num_queues;
 202         dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
 203         p_queue->queue_relative_offset = (u8)dval;
 204         p_queue->cq_sb_pi = p_params->gl_rq_pi;
 205         p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
 206
 207         for (i = 0; i < p_params->num_queues; i++) {
 208                 val = qed_get_igu_sb_id(p_hwfn, i);
 209                 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
 210         }
 211
 212         p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
 213
 214         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
 215                        p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
 216         p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
 217             p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
 218         val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
 219         p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 220         val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
 221         p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 222
 223         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
 224                        p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
 225         p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
 226             p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
 227         val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
 228         p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 229         val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
 230         p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 231         val = p_params->rq_buffer_size;
 232         p_queue->rq_buffer_size = cpu_to_le16(val);
 233         if (p_params->is_target) {
 234                 SET_FIELD(p_queue->q_validity,
 235                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 236                 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
 237                         SET_FIELD(p_queue->q_validity,
 238                                   SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
 239                 SET_FIELD(p_queue->q_validity,
 240                           SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
 241         } else {
 242                 SET_FIELD(p_queue->q_validity,
 243                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 244         }
 245         p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
 246         val = p_params->tx_sws_timer;
 247         p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
 248         p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
 249
 250         p_hwfn->p_iscsi_info->event_context = event_context;
 251         p_hwfn->p_iscsi_info->event_cb = async_event_cb;
 252
 253         qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
 254                                   qed_iscsi_async_event);
 255
 256         return qed_spq_post(p_hwfn, p_ent, NULL);
 257 }
 258
 259 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
 260                                      struct qed_iscsi_conn *p_conn,
 261                                      enum spq_mode comp_mode,
 262                                      struct qed_spq_comp_cb *p_comp_addr)
 263 {
 264         struct iscsi_spe_conn_offload *p_ramrod = NULL;
 265         struct tcp_offload_params_opt2 *p_tcp2 = NULL;
 266         struct tcp_offload_params *p_tcp = NULL;
 267         struct qed_spq_entry *p_ent = NULL;
 268         struct qed_sp_init_data init_data;
 269         dma_addr_t r2tq_pbl_addr;
 270         dma_addr_t xhq_pbl_addr;
 271         dma_addr_t uhq_pbl_addr;
 272         u16 physical_q;
 273         __le16 tmp;
 274         int rc = 0;
 275         u32 dval;
 276         u16 wval;
 277         u16 *p;
 278         u8 i;
 279
 280         /* Get SPQ entry */
 281         memset(&init_data, 0, sizeof(init_data));
 282         init_data.cid = p_conn->icid;
 283         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 284         init_data.comp_mode = comp_mode;
 285         init_data.p_comp_data = p_comp_addr;
 286
 287         rc = qed_sp_init_request(p_hwfn, &p_ent,
 288                                  ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
 289                                  PROTOCOLID_ISCSI, &init_data);
 290         if (rc)
 291                 return rc;
 292
 293         p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
 294
 295         /* Transmission PQ is the first of the PF */
 296         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
 297         p_conn->physical_q0 = physical_q;
 298         p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
 299
 300         /* iSCSI Pure-ACK PQ */
 301         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
 302         p_conn->physical_q1 = physical_q;
 303         p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
 304
 305         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 306
 307         DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
 308
 309         r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
 310         DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
 311
 312         xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
 313         DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
 314
 315         uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
 316         DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
 317
 318         p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
 319         p_ramrod->iscsi.flags = p_conn->offl_flags;
 320         p_ramrod->iscsi.default_cq = p_conn->default_cq;
 321         p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
 322
 323         if (!GET_FIELD(p_ramrod->iscsi.flags,
 324                        ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
 325                 p_tcp = &p_ramrod->tcp;
 326
 327                 p = (u16 *)p_conn->local_mac;
 328                 tmp = cpu_to_le16(get_unaligned_be16(p));
 329                 p_tcp->local_mac_addr_hi = tmp;
 330                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 331                 p_tcp->local_mac_addr_mid = tmp;
 332                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 333                 p_tcp->local_mac_addr_lo = tmp;
 334
 335                 p = (u16 *)p_conn->remote_mac;
 336                 tmp = cpu_to_le16(get_unaligned_be16(p));
 337                 p_tcp->remote_mac_addr_hi = tmp;
 338                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 339                 p_tcp->remote_mac_addr_mid = tmp;
 340                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 341                 p_tcp->remote_mac_addr_lo = tmp;
 342
 343                 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
 344
 345                 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
 346                 p_tcp->ip_version = p_conn->ip_version;
 347                 for (i = 0; i < 4; i++) {
 348                         dval = p_conn->remote_ip[i];
 349                         p_tcp->remote_ip[i] = cpu_to_le32(dval);
 350                         dval = p_conn->local_ip[i];
 351                         p_tcp->local_ip[i] = cpu_to_le32(dval);
 352                 }
 353                 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
 354                 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
 355
 356                 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
 357                 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
 358                 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
 359                 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
 360                 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
 361                 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
 362                 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
 363                 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
 364                 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
 365                 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
 366                 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
 367                 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
 368                 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
 369                 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
 370                 dval = p_conn->ka_timeout_delta;
 371                 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
 372                 dval = p_conn->rt_timeout_delta;
 373                 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
 374                 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
 375                 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
 376                 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
 377                 p_tcp->rt_cnt = p_conn->rt_cnt;
 378                 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
 379                 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 380                 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
 381                 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 382                 dval = p_conn->initial_rcv_wnd;
 383                 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
 384                 p_tcp->ttl = p_conn->ttl;
 385                 p_tcp->tos_or_tc = p_conn->tos_or_tc;
 386                 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
 387                 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
 388                 p_tcp->mss = cpu_to_le16(p_conn->mss);
 389                 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
 390                 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 391                 wval = p_conn->da_timeout_value;
 392                 p_tcp->da_timeout_value = cpu_to_le16(wval);
 393                 p_tcp->ack_frequency = p_conn->ack_frequency;
 394                 p_tcp->connect_mode = p_conn->connect_mode;
 395         } else {
 396                 p_tcp2 =
 397                     &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
 398
 399                 p = (u16 *)p_conn->local_mac;
 400                 tmp = cpu_to_le16(get_unaligned_be16(p));
 401                 p_tcp2->local_mac_addr_hi = tmp;
 402                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 403                 p_tcp2->local_mac_addr_mid = tmp;
 404                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 405                 p_tcp2->local_mac_addr_lo = tmp;
 406
 407                 p = (u16 *)p_conn->remote_mac;
 408                 tmp = cpu_to_le16(get_unaligned_be16(p));
 409                 p_tcp2->remote_mac_addr_hi = tmp;
 410                 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
 411                 p_tcp2->remote_mac_addr_mid = tmp;
 412                 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
 413                 p_tcp2->remote_mac_addr_lo = tmp;
 414
 415                 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
 416                 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
 417
 418                 p_tcp2->ip_version = p_conn->ip_version;
 419                 for (i = 0; i < 4; i++) {
 420                         dval = p_conn->remote_ip[i];
 421                         p_tcp2->remote_ip[i] = cpu_to_le32(dval);
 422                         dval = p_conn->local_ip[i];
 423                         p_tcp2->local_ip[i] = cpu_to_le32(dval);
 424                 }
 425
 426                 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
 427                 p_tcp2->ttl = p_conn->ttl;
 428                 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
 429                 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
 430                 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
 431                 p_tcp2->mss = cpu_to_le16(p_conn->mss);
 432                 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 433                 p_tcp2->connect_mode = p_conn->connect_mode;
 434                 wval = p_conn->syn_ip_payload_length;
 435                 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
 436                 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
 437                 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
 438                 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
 439                 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
 440                 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 441                 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 442                 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
 443         }
 444
 445         return qed_spq_post(p_hwfn, p_ent, NULL);
 446 }
 447
 448 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
 449                                     struct qed_iscsi_conn *p_conn,
 450                                     enum spq_mode comp_mode,
 451                                     struct qed_spq_comp_cb *p_comp_addr)
 452 {
 453         struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
 454         struct qed_spq_entry *p_ent = NULL;
 455         struct qed_sp_init_data init_data;
 456         int rc = -EINVAL;
 457         u32 dval;
 458
 459         /* Get SPQ entry */
 460         memset(&init_data, 0, sizeof(init_data));
 461         init_data.cid = p_conn->icid;
 462         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 463         init_data.comp_mode = comp_mode;
 464         init_data.p_comp_data = p_comp_addr;
 465
 466         rc = qed_sp_init_request(p_hwfn, &p_ent,
 467                                  ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
 468                                  PROTOCOLID_ISCSI, &init_data);
 469         if (rc)
 470                 return rc;
 471
 472         p_ramrod = &p_ent->ramrod.iscsi_conn_update;
 473
 474         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 475         p_ramrod->flags = p_conn->update_flag;
 476         p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
 477         dval = p_conn->max_recv_pdu_length;
 478         p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
 479         dval = p_conn->max_send_pdu_length;
 480         p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
 481         dval = p_conn->first_seq_length;
 482         p_ramrod->first_seq_length = cpu_to_le32(dval);
 483         p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
 484
 485         return qed_spq_post(p_hwfn, p_ent, NULL);
 486 }
 487
 488 static int
 489 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
 490                         struct qed_iscsi_conn *p_conn,
 491                         enum spq_mode comp_mode,
 492                         struct qed_spq_comp_cb *p_comp_addr)
 493 {
 494         struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
 495         struct qed_spq_entry *p_ent = NULL;
 496         struct qed_sp_init_data init_data;
 497         int rc = -EINVAL;
 498         u8 ucval;
 499
 500         /* Get SPQ entry */
 501         memset(&init_data, 0, sizeof(init_data));
 502         init_data.cid = p_conn->icid;
 503         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 504         init_data.comp_mode = comp_mode;
 505         init_data.p_comp_data = p_comp_addr;
 506
 507         rc = qed_sp_init_request(p_hwfn, &p_ent,
 508                                  ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
 509                                  PROTOCOLID_ISCSI, &init_data);
 510         if (rc)
 511                 return rc;
 512
 513         p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
 514
 515         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 516         ucval = p_conn->remote_mac[1];
 517         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
 518         ucval = p_conn->remote_mac[0];
 519         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
 520         ucval = p_conn->remote_mac[3];
 521         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
 522         ucval = p_conn->remote_mac[2];
 523         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
 524         ucval = p_conn->remote_mac[5];
 525         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
 526         ucval = p_conn->remote_mac[4];
 527         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
 528
 529         return qed_spq_post(p_hwfn, p_ent, NULL);
 530 }
 531
 532 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
 533                                        struct qed_iscsi_conn *p_conn,
 534                                        enum spq_mode comp_mode,
 535                                        struct qed_spq_comp_cb *p_comp_addr)
 536 {
 537         struct iscsi_spe_conn_termination *p_ramrod = NULL;
 538         struct qed_spq_entry *p_ent = NULL;
 539         struct qed_sp_init_data init_data;
 540         int rc = -EINVAL;
 541
 542         /* Get SPQ entry */
 543         memset(&init_data, 0, sizeof(init_data));
 544         init_data.cid = p_conn->icid;
 545         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 546         init_data.comp_mode = comp_mode;
 547         init_data.p_comp_data = p_comp_addr;
 548
 549         rc = qed_sp_init_request(p_hwfn, &p_ent,
 550                                  ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
 551                                  PROTOCOLID_ISCSI, &init_data);
 552         if (rc)
 553                 return rc;
 554
 555         p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
 556
 557         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 558         p_ramrod->abortive = p_conn->abortive_dsconnect;
 559
 560         DMA_REGPAIR_LE(p_ramrod->query_params_addr,
 561                        p_conn->tcp_upload_params_phys_addr);
 562         DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
 563
 564         return qed_spq_post(p_hwfn, p_ent, NULL);
 565 }
 566
 567 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
 568                                       struct qed_iscsi_conn *p_conn,
 569                                       enum spq_mode comp_mode,
 570                                       struct qed_spq_comp_cb *p_comp_addr)
 571 {
 572         struct qed_spq_entry *p_ent = NULL;
 573         struct qed_sp_init_data init_data;
 574         int rc = -EINVAL;
 575
 576         /* Get SPQ entry */
 577         memset(&init_data, 0, sizeof(init_data));
 578         init_data.cid = p_conn->icid;
 579         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 580         init_data.comp_mode = comp_mode;
 581         init_data.p_comp_data = p_comp_addr;
 582
 583         rc = qed_sp_init_request(p_hwfn, &p_ent,
 584                                  ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
 585                                  PROTOCOLID_ISCSI, &init_data);
 586         if (rc)
 587                 return rc;
 588
 589         return qed_spq_post(p_hwfn, p_ent, NULL);
 590 }
 591
 592 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
 593                                   enum spq_mode comp_mode,
 594                                   struct qed_spq_comp_cb *p_comp_addr)
 595 {
 596         struct qed_spq_entry *p_ent = NULL;
 597         struct qed_sp_init_data init_data;
 598         int rc = 0;
 599
 600         /* Get SPQ entry */
 601         memset(&init_data, 0, sizeof(init_data));
 602         init_data.cid = qed_spq_get_cid(p_hwfn);
 603         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 604         init_data.comp_mode = comp_mode;
 605         init_data.p_comp_data = p_comp_addr;
 606
 607         rc = qed_sp_init_request(p_hwfn, &p_ent,
 608                                  ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
 609                                  PROTOCOLID_ISCSI, &init_data);
 610         if (rc)
 611                 return rc;
 612
 613         rc = qed_spq_post(p_hwfn, p_ent, NULL);
 614
 615         qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
 616         return rc;
 617 }
 618
 619 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
 620 {
 621         return (u8 __iomem *)p_hwfn->doorbells +
 622                              qed_db_addr(cid, DQ_DEMS_LEGACY);
 623 }
 624
 625 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
 626                                                     u8 bdq_id)
 627 {
 628         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 629                 return (u8 __iomem *)p_hwfn->regview +
 630                        GTT_BAR0_MAP_REG_MSDM_RAM +
 631                        MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 632                                                                   QED_BDQ),
 633                                                        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                        GTT_BAR0_MAP_REG_TSDM_RAM +
 646                        TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 647                                                                   QED_BDQ),
 648                                                        bdq_id);
 649         } else {
 650                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 651                 return NULL;
 652         }
 653 }
 654
 655 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
 656 {
 657         if (!p_conn->queue_cnts_virt_addr)
 658                 goto nomem;
 659         memset(p_conn->queue_cnts_virt_addr, 0,
 660                sizeof(*p_conn->queue_cnts_virt_addr));
 661
 662         if (!p_conn->tcp_upload_params_virt_addr)
 663                 goto nomem;
 664         memset(p_conn->tcp_upload_params_virt_addr, 0,
 665                sizeof(*p_conn->tcp_upload_params_virt_addr));
 666
 667         if (!p_conn->r2tq.p_virt_addr)
 668                 goto nomem;
 669         qed_chain_pbl_zero_mem(&p_conn->r2tq);
 670
 671         if (!p_conn->uhq.p_virt_addr)
 672                 goto nomem;
 673         qed_chain_pbl_zero_mem(&p_conn->uhq);
 674
 675         if (!p_conn->xhq.p_virt_addr)
 676                 goto nomem;
 677         qed_chain_pbl_zero_mem(&p_conn->xhq);
 678
 679         return 0;
 680 nomem:
 681         return -ENOMEM;
 682 }
 683
 684 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
 685                                          struct qed_iscsi_conn **p_out_conn)
 686 {
 687         u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
 688         struct scsi_terminate_extra_params *p_q_cnts = NULL;
 689         struct qed_iscsi_pf_params *p_params = NULL;
 690         struct tcp_upload_params *p_tcp = NULL;
 691         struct qed_iscsi_conn *p_conn = NULL;
 692         int rc = 0;
 693
 694         /* Try finding a free connection that can be used */
 695         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 696         if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
 697                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 698                                           struct qed_iscsi_conn, list_entry);
 699         if (p_conn) {
 700                 list_del(&p_conn->list_entry);
 701                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 702                 *p_out_conn = p_conn;
 703                 return 0;
 704         }
 705         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 706
 707         /* Need to allocate a new connection */
 708         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 709
 710         p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
 711         if (!p_conn)
 712                 return -ENOMEM;
 713
 714         p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 715                                       sizeof(*p_q_cnts),
 716                                       &p_conn->queue_cnts_phys_addr,
 717                                       GFP_KERNEL);
 718         if (!p_q_cnts)
 719                 goto nomem_queue_cnts_param;
 720         p_conn->queue_cnts_virt_addr = p_q_cnts;
 721
 722         p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 723                                    sizeof(*p_tcp),
 724                                    &p_conn->tcp_upload_params_phys_addr,
 725                                    GFP_KERNEL);
 726         if (!p_tcp)
 727                 goto nomem_upload_param;
 728         p_conn->tcp_upload_params_virt_addr = p_tcp;
 729
 730         r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
 731                             QED_CHAIN_PAGE_SIZE / 0x80;
 732         rc = qed_chain_alloc(p_hwfn->cdev,
 733                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 734                              QED_CHAIN_MODE_PBL,
 735                              QED_CHAIN_CNT_TYPE_U16,
 736                              r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
 737         if (rc)
 738                 goto nomem_r2tq;
 739
 740         uhq_num_elements = p_params->num_uhq_pages_in_ring *
 741                            QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
 742         rc = qed_chain_alloc(p_hwfn->cdev,
 743                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 744                              QED_CHAIN_MODE_PBL,
 745                              QED_CHAIN_CNT_TYPE_U16,
 746                              uhq_num_elements,
 747                              sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
 748         if (rc)
 749                 goto nomem_uhq;
 750
 751         xhq_num_elements = uhq_num_elements;
 752         rc = qed_chain_alloc(p_hwfn->cdev,
 753                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 754                              QED_CHAIN_MODE_PBL,
 755                              QED_CHAIN_CNT_TYPE_U16,
 756                              xhq_num_elements,
 757                              sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
 758         if (rc)
 759                 goto nomem;
 760
 761         p_conn->free_on_delete = true;
 762         *p_out_conn = p_conn;
 763         return 0;
 764
 765 nomem:
 766         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 767 nomem_uhq:
 768         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 769 nomem_r2tq:
 770         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 771                           sizeof(struct tcp_upload_params),
 772                           p_conn->tcp_upload_params_virt_addr,
 773                           p_conn->tcp_upload_params_phys_addr);
 774 nomem_upload_param:
 775         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 776                           sizeof(struct scsi_terminate_extra_params),
 777                           p_conn->queue_cnts_virt_addr,
 778                           p_conn->queue_cnts_phys_addr);
 779 nomem_queue_cnts_param:
 780         kfree(p_conn);
 781
 782         return -ENOMEM;
 783 }
 784
 785 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
 786                                         struct qed_iscsi_conn *p_in_conn,
 787                                         struct qed_iscsi_conn **p_out_conn)
 788 {
 789         struct qed_iscsi_conn *p_conn = NULL;
 790         int rc = 0;
 791         u32 icid;
 792
 793         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 794         rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
 795         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 796         if (rc)
 797                 return rc;
 798
 799         /* Use input connection or allocate a new one */
 800         if (p_in_conn)
 801                 p_conn = p_in_conn;
 802         else
 803                 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
 804
 805         if (!rc)
 806                 rc = qed_iscsi_setup_connection(p_conn);
 807
 808         if (rc) {
 809                 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 810                 qed_cxt_release_cid(p_hwfn, icid);
 811                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 812                 return rc;
 813         }
 814
 815         p_conn->icid = icid;
 816         p_conn->conn_id = (u16)icid;
 817         p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
 818
 819         *p_out_conn = p_conn;
 820
 821         return rc;
 822 }
 823
 824 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
 825                                          struct qed_iscsi_conn *p_conn)
 826 {
 827         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 828         list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
 829         qed_cxt_release_cid(p_hwfn, p_conn->icid);
 830         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 831 }
 832
 833 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
 834                                       struct qed_iscsi_conn *p_conn)
 835 {
 836         qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
 837         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 838         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 839         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 840                           sizeof(struct tcp_upload_params),
 841                           p_conn->tcp_upload_params_virt_addr,
 842                           p_conn->tcp_upload_params_phys_addr);
 843         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 844                           sizeof(struct scsi_terminate_extra_params),
 845                           p_conn->queue_cnts_virt_addr,
 846                           p_conn->queue_cnts_phys_addr);
 847         kfree(p_conn);
 848 }
 849
 850 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
 851 {
 852         struct qed_iscsi_info *p_iscsi_info;
 853
 854         p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
 855         if (!p_iscsi_info)
 856                 return -ENOMEM;
 857
 858         INIT_LIST_HEAD(&p_iscsi_info->free_list);
 859
 860         p_hwfn->p_iscsi_info = p_iscsi_info;
 861         return 0;
 862 }
 863
 864 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
 865 {
 866         spin_lock_init(&p_hwfn->p_iscsi_info->lock);
 867 }
 868
 869 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
 870 {
 871         struct qed_iscsi_conn *p_conn = NULL;
 872
 873         if (!p_hwfn->p_iscsi_info)
 874                 return;
 875
 876         while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
 877                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 878                                           struct qed_iscsi_conn, list_entry);
 879                 if (p_conn) {
 880                         list_del(&p_conn->list_entry);
 881                         qed_iscsi_free_connection(p_hwfn, p_conn);
 882                 }
 883         }
 884
 885         kfree(p_hwfn->p_iscsi_info);
 886         p_hwfn->p_iscsi_info = NULL;
 887 }
 888
 889 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
 890                                   struct qed_ptt *p_ptt,
 891                                   struct qed_iscsi_stats *p_stats)
 892 {
 893         struct tstorm_iscsi_stats_drv tstats;
 894         u32 tstats_addr;
 895
 896         memset(&tstats, 0, sizeof(tstats));
 897         tstats_addr = BAR0_MAP_REG_TSDM_RAM +
 898                       TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 899         qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
 900
 901         p_stats->iscsi_rx_bytes_cnt =
 902             HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
 903         p_stats->iscsi_rx_packet_cnt =
 904             HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
 905         p_stats->iscsi_rx_new_ooo_isle_events_cnt =
 906             HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
 907         p_stats->iscsi_cmdq_threshold_cnt =
 908             le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
 909         p_stats->iscsi_rq_threshold_cnt =
 910             le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
 911         p_stats->iscsi_immq_threshold_cnt =
 912             le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
 913 }
 914
 915 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
 916                                   struct qed_ptt *p_ptt,
 917                                   struct qed_iscsi_stats *p_stats)
 918 {
 919         struct mstorm_iscsi_stats_drv mstats;
 920         u32 mstats_addr;
 921
 922         memset(&mstats, 0, sizeof(mstats));
 923         mstats_addr = BAR0_MAP_REG_MSDM_RAM +
 924                       MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 925         qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
 926
 927         p_stats->iscsi_rx_dropped_pdus_task_not_valid =
 928             HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
 929 }
 930
 931 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
 932                                   struct qed_ptt *p_ptt,
 933                                   struct qed_iscsi_stats *p_stats)
 934 {
 935         struct ustorm_iscsi_stats_drv ustats;
 936         u32 ustats_addr;
 937
 938         memset(&ustats, 0, sizeof(ustats));
 939         ustats_addr = BAR0_MAP_REG_USDM_RAM +
 940                       USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 941         qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
 942
 943         p_stats->iscsi_rx_data_pdu_cnt =
 944             HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
 945         p_stats->iscsi_rx_r2t_pdu_cnt =
 946             HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
 947         p_stats->iscsi_rx_total_pdu_cnt =
 948             HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
 949 }
 950
 951 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
 952                                   struct qed_ptt *p_ptt,
 953                                   struct qed_iscsi_stats *p_stats)
 954 {
 955         struct xstorm_iscsi_stats_drv xstats;
 956         u32 xstats_addr;
 957
 958         memset(&xstats, 0, sizeof(xstats));
 959         xstats_addr = BAR0_MAP_REG_XSDM_RAM +
 960                       XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 961         qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
 962
 963         p_stats->iscsi_tx_go_to_slow_start_event_cnt =
 964             HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
 965         p_stats->iscsi_tx_fast_retransmit_event_cnt =
 966             HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
 967 }
 968
 969 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
 970                                   struct qed_ptt *p_ptt,
 971                                   struct qed_iscsi_stats *p_stats)
 972 {
 973         struct ystorm_iscsi_stats_drv ystats;
 974         u32 ystats_addr;
 975
 976         memset(&ystats, 0, sizeof(ystats));
 977         ystats_addr = BAR0_MAP_REG_YSDM_RAM +
 978                       YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 979         qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
 980
 981         p_stats->iscsi_tx_data_pdu_cnt =
 982             HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
 983         p_stats->iscsi_tx_r2t_pdu_cnt =
 984             HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
 985         p_stats->iscsi_tx_total_pdu_cnt =
 986             HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
 987 }
 988
 989 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
 990                                   struct qed_ptt *p_ptt,
 991                                   struct qed_iscsi_stats *p_stats)
 992 {
 993         struct pstorm_iscsi_stats_drv pstats;
 994         u32 pstats_addr;
 995
 996         memset(&pstats, 0, sizeof(pstats));
 997         pstats_addr = BAR0_MAP_REG_PSDM_RAM +
 998                       PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 999         qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1000
1001         p_stats->iscsi_tx_bytes_cnt =
1002             HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1003         p_stats->iscsi_tx_packet_cnt =
1004             HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1005 }
1006
1007 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1008                                struct qed_iscsi_stats *stats)
1009 {
1010         struct qed_ptt *p_ptt;
1011
1012         memset(stats, 0, sizeof(*stats));
1013
1014         p_ptt = qed_ptt_acquire(p_hwfn);
1015         if (!p_ptt) {
1016                 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1017                 return -EAGAIN;
1018         }
1019
1020         _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1021         _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1022         _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1023
1024         _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1025         _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1026         _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1027
1028         qed_ptt_release(p_hwfn, p_ptt);
1029
1030         return 0;
1031 }
1032
1033 struct qed_hash_iscsi_con {
1034         struct hlist_node node;
1035         struct qed_iscsi_conn *con;
1036 };
1037
1038 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1039                                    struct qed_dev_iscsi_info *info)
1040 {
1041         struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
1042
1043         int rc;
1044
1045         memset(info, 0, sizeof(*info));
1046         rc = qed_fill_dev_info(cdev, &info->common);
1047
1048         info->primary_dbq_rq_addr =
1049             qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1050         info->secondary_bdq_rq_addr =
1051             qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1052
1053         info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1054
1055         return rc;
1056 }
1057
1058 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1059                                    struct qed_iscsi_cb_ops *ops, void *cookie)
1060 {
1061         cdev->protocol_ops.iscsi = ops;
1062         cdev->ops_cookie = cookie;
1063 }
1064
1065 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1066                                                      u32 handle)
1067 {
1068         struct qed_hash_iscsi_con *hash_con = NULL;
1069
1070         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1071                 return NULL;
1072
1073         hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1074                 if (hash_con->con->icid == handle)
1075                         break;
1076         }
1077
1078         if (!hash_con || (hash_con->con->icid != handle))
1079                 return NULL;
1080
1081         return hash_con;
1082 }
1083
1084 static int qed_iscsi_stop(struct qed_dev *cdev)
1085 {
1086         int rc;
1087
1088         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1089                 DP_NOTICE(cdev, "iscsi already stopped\n");
1090                 return 0;
1091         }
1092
1093         if (!hash_empty(cdev->connections)) {
1094                 DP_NOTICE(cdev,
1095                           "Can't stop iscsi - not all connections were returned\n");
1096                 return -EINVAL;
1097         }
1098
1099         /* Stop the iscsi */
1100         rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1101                                     NULL);
1102         cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1103
1104         return rc;
1105 }
1106
1107 static int qed_iscsi_start(struct qed_dev *cdev,
1108                            struct qed_iscsi_tid *tasks,
1109                            void *event_context,
1110                            iscsi_event_cb_t async_event_cb)
1111 {
1112         int rc;
1113         struct qed_tid_mem *tid_info;
1114
1115         if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1116                 DP_NOTICE(cdev, "iscsi already started;\n");
1117                 return 0;
1118         }
1119
1120         rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1121                                      NULL, event_context, async_event_cb);
1122         if (rc) {
1123                 DP_NOTICE(cdev, "Failed to start iscsi\n");
1124                 return rc;
1125         }
1126
1127         cdev->flags |= QED_FLAG_STORAGE_STARTED;
1128         hash_init(cdev->connections);
1129
1130         if (!tasks)
1131                 return 0;
1132
1133         tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1134
1135         if (!tid_info) {
1136                 qed_iscsi_stop(cdev);
1137                 return -ENOMEM;
1138         }
1139
1140         rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
1141         if (rc) {
1142                 DP_NOTICE(cdev, "Failed to gather task information\n");
1143                 qed_iscsi_stop(cdev);
1144                 kfree(tid_info);
1145                 return rc;
1146         }
1147
1148         /* Fill task information */
1149         tasks->size = tid_info->tid_size;
1150         tasks->num_tids_per_block = tid_info->num_tids_per_block;
1151         memcpy(tasks->blocks, tid_info->blocks,
1152                MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1153
1154         kfree(tid_info);
1155
1156         return 0;
1157 }
1158
1159 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1160                                   u32 *handle,
1161                                   u32 *fw_cid, void __iomem **p_doorbell)
1162 {
1163         struct qed_hash_iscsi_con *hash_con;
1164         int rc;
1165
1166         /* Allocate a hashed connection */
1167         hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1168         if (!hash_con)
1169                 return -ENOMEM;
1170
1171         /* Acquire the connection */
1172         rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
1173                                           &hash_con->con);
1174         if (rc) {
1175                 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1176                 kfree(hash_con);
1177                 return rc;
1178         }
1179
1180         /* Added the connection to hash table */
1181         *handle = hash_con->con->icid;
1182         *fw_cid = hash_con->con->fw_cid;
1183         hash_add(cdev->connections, &hash_con->node, *handle);
1184
1185         if (p_doorbell)
1186                 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev),
1187                                                     *handle);
1188
1189         return 0;
1190 }
1191
1192 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1193 {
1194         struct qed_hash_iscsi_con *hash_con;
1195
1196         hash_con = qed_iscsi_get_hash(cdev, handle);
1197         if (!hash_con) {
1198                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1199                           handle);
1200                 return -EINVAL;
1201         }
1202
1203         hlist_del(&hash_con->node);
1204         qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
1205         kfree(hash_con);
1206
1207         return 0;
1208 }
1209
1210 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1211                                   u32 handle,
1212                                   struct qed_iscsi_params_offload *conn_info)
1213 {
1214         struct qed_hash_iscsi_con *hash_con;
1215         struct qed_iscsi_conn *con;
1216
1217         hash_con = qed_iscsi_get_hash(cdev, handle);
1218         if (!hash_con) {
1219                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1220                           handle);
1221                 return -EINVAL;
1222         }
1223
1224         /* Update the connection with information from the params */
1225         con = hash_con->con;
1226
1227         ether_addr_copy(con->local_mac, conn_info->src.mac);
1228         ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1229         memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1230         memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1231         con->local_port = conn_info->src.port;
1232         con->remote_port = conn_info->dst.port;
1233
1234         con->layer_code = conn_info->layer_code;
1235         con->sq_pbl_addr = conn_info->sq_pbl_addr;
1236         con->initial_ack = conn_info->initial_ack;
1237         con->vlan_id = conn_info->vlan_id;
1238         con->tcp_flags = conn_info->tcp_flags;
1239         con->ip_version = conn_info->ip_version;
1240         con->default_cq = conn_info->default_cq;
1241         con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1242         con->dup_ack_theshold = conn_info->dup_ack_theshold;
1243         con->rcv_next = conn_info->rcv_next;
1244         con->snd_una = conn_info->snd_una;
1245         con->snd_next = conn_info->snd_next;
1246         con->snd_max = conn_info->snd_max;
1247         con->snd_wnd = conn_info->snd_wnd;
1248         con->rcv_wnd = conn_info->rcv_wnd;
1249         con->snd_wl1 = conn_info->snd_wl1;
1250         con->cwnd = conn_info->cwnd;
1251         con->ss_thresh = conn_info->ss_thresh;
1252         con->srtt = conn_info->srtt;
1253         con->rtt_var = conn_info->rtt_var;
1254         con->ts_recent = conn_info->ts_recent;
1255         con->ts_recent_age = conn_info->ts_recent_age;
1256         con->total_rt = conn_info->total_rt;
1257         con->ka_timeout_delta = conn_info->ka_timeout_delta;
1258         con->rt_timeout_delta = conn_info->rt_timeout_delta;
1259         con->dup_ack_cnt = conn_info->dup_ack_cnt;
1260         con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1261         con->ka_probe_cnt = conn_info->ka_probe_cnt;
1262         con->rt_cnt = conn_info->rt_cnt;
1263         con->flow_label = conn_info->flow_label;
1264         con->ka_timeout = conn_info->ka_timeout;
1265         con->ka_interval = conn_info->ka_interval;
1266         con->max_rt_time = conn_info->max_rt_time;
1267         con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1268         con->ttl = conn_info->ttl;
1269         con->tos_or_tc = conn_info->tos_or_tc;
1270         con->remote_port = conn_info->remote_port;
1271         con->local_port = conn_info->local_port;
1272         con->mss = conn_info->mss;
1273         con->snd_wnd_scale = conn_info->snd_wnd_scale;
1274         con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1275         con->da_timeout_value = conn_info->da_timeout_value;
1276         con->ack_frequency = conn_info->ack_frequency;
1277
1278         /* Set default values on other connection fields */
1279         con->offl_flags = 0x1;
1280
1281         return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con,
1282                                          QED_SPQ_MODE_EBLOCK, NULL);
1283 }
1284
1285 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1286                                  u32 handle,
1287                                  struct qed_iscsi_params_update *conn_info)
1288 {
1289         struct qed_hash_iscsi_con *hash_con;
1290         struct qed_iscsi_conn *con;
1291
1292         hash_con = qed_iscsi_get_hash(cdev, handle);
1293         if (!hash_con) {
1294                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1295                           handle);
1296                 return -EINVAL;
1297         }
1298
1299         /* Update the connection with information from the params */
1300         con = hash_con->con;
1301         con->update_flag = conn_info->update_flag;
1302         con->max_seq_size = conn_info->max_seq_size;
1303         con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1304         con->max_send_pdu_length = conn_info->max_send_pdu_length;
1305         con->first_seq_length = conn_info->first_seq_length;
1306         con->exp_stat_sn = conn_info->exp_stat_sn;
1307
1308         return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con,
1309                                         QED_SPQ_MODE_EBLOCK, NULL);
1310 }
1311
1312 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1313 {
1314         struct qed_hash_iscsi_con *hash_con;
1315
1316         hash_con = qed_iscsi_get_hash(cdev, handle);
1317         if (!hash_con) {
1318                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1319                           handle);
1320                 return -EINVAL;
1321         }
1322
1323         return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
1324                                           QED_SPQ_MODE_EBLOCK, NULL);
1325 }
1326
1327 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1328                                   u32 handle, u8 abrt_conn)
1329 {
1330         struct qed_hash_iscsi_con *hash_con;
1331
1332         hash_con = qed_iscsi_get_hash(cdev, handle);
1333         if (!hash_con) {
1334                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1335                           handle);
1336                 return -EINVAL;
1337         }
1338
1339         hash_con->con->abortive_dsconnect = abrt_conn;
1340
1341         return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
1342                                            QED_SPQ_MODE_EBLOCK, NULL);
1343 }
1344
1345 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1346 {
1347         return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats);
1348 }
1349
1350 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1351                                 u32 handle, const u8 *mac)
1352 {
1353         struct qed_hash_iscsi_con *hash_con;
1354
1355         hash_con = qed_iscsi_get_hash(cdev, handle);
1356         if (!hash_con) {
1357                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1358                           handle);
1359                 return -EINVAL;
1360         }
1361
1362         return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con,
1363                                        QED_SPQ_MODE_EBLOCK, NULL);
1364 }
1365
1366 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1367                                   struct qed_mcp_iscsi_stats *stats)
1368 {
1369         struct qed_iscsi_stats proto_stats;
1370
1371         /* Retrieve FW statistics */
1372         memset(&proto_stats, 0, sizeof(proto_stats));
1373         if (qed_iscsi_stats(cdev, &proto_stats)) {
1374                 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1375                            "Failed to collect ISCSI statistics\n");
1376                 return;
1377         }
1378
1379         /* Translate FW statistics into struct */
1380         stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1381         stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1382         stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1383         stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1384 }
1385
1386 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1387         .common = &qed_common_ops_pass,
1388         .ll2 = &qed_ll2_ops_pass,
1389         .fill_dev_info = &qed_fill_iscsi_dev_info,
1390         .register_ops = &qed_register_iscsi_ops,
1391         .start = &qed_iscsi_start,
1392         .stop = &qed_iscsi_stop,
1393         .acquire_conn = &qed_iscsi_acquire_conn,
1394         .release_conn = &qed_iscsi_release_conn,
1395         .offload_conn = &qed_iscsi_offload_conn,
1396         .update_conn = &qed_iscsi_update_conn,
1397         .destroy_conn = &qed_iscsi_destroy_conn,
1398         .clear_sq = &qed_iscsi_clear_conn_sq,
1399         .get_stats = &qed_iscsi_stats,
1400         .change_mac = &qed_iscsi_change_mac,
1401 };
1402
1403 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1404 {
1405         return &qed_iscsi_ops_pass;
1406 }
1407 EXPORT_SYMBOL(qed_get_iscsi_ops);
1408
1409 void qed_put_iscsi_ops(void)
1410 {
1411 }
1412 EXPORT_SYMBOL(qed_put_iscsi_ops);