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

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/types.h>
  34 #include <asm/byteorder.h>
  35 #include <asm/param.h>
  36 #include <linux/delay.h>
  37 #include <linux/dma-mapping.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/kernel.h>
  41 #include <linux/log2.h>
  42 #include <linux/module.h>
  43 #include <linux/pci.h>
  44 #include <linux/slab.h>
  45 #include <linux/stddef.h>
  46 #include <linux/string.h>
  47 #include <linux/workqueue.h>
  48 #include <linux/errno.h>
  49 #include <linux/list.h>
  50 #include <linux/spinlock.h>
  51 #include <linux/qed/qed_iscsi_if.h>
  52 #include "qed.h"
  53 #include "qed_cxt.h"
  54 #include "qed_dev_api.h"
  55 #include "qed_hsi.h"
  56 #include "qed_hw.h"
  57 #include "qed_int.h"
  58 #include "qed_iscsi.h"
  59 #include "qed_ll2.h"
  60 #include "qed_mcp.h"
  61 #include "qed_sp.h"
  62 #include "qed_sriov.h"
  63 #include "qed_reg_addr.h"
  64
  65 struct qed_iscsi_conn {
  66         struct list_head list_entry;
  67         bool free_on_delete;
  68
  69         u16 conn_id;
  70         u32 icid;
  71         u32 fw_cid;
  72
  73         u8 layer_code;
  74         u8 offl_flags;
  75         u8 connect_mode;
  76         u32 initial_ack;
  77         dma_addr_t sq_pbl_addr;
  78         struct qed_chain r2tq;
  79         struct qed_chain xhq;
  80         struct qed_chain uhq;
  81
  82         struct tcp_upload_params *tcp_upload_params_virt_addr;
  83         dma_addr_t tcp_upload_params_phys_addr;
  84         struct scsi_terminate_extra_params *queue_cnts_virt_addr;
  85         dma_addr_t queue_cnts_phys_addr;
  86         dma_addr_t syn_phy_addr;
  87
  88         u16 syn_ip_payload_length;
  89         u8 local_mac[6];
  90         u8 remote_mac[6];
  91         u16 vlan_id;
  92         u8 tcp_flags;
  93         u8 ip_version;
  94         u32 remote_ip[4];
  95         u32 local_ip[4];
  96         u8 ka_max_probe_cnt;
  97         u8 dup_ack_theshold;
  98         u32 rcv_next;
  99         u32 snd_una;
 100         u32 snd_next;
 101         u32 snd_max;
 102         u32 snd_wnd;
 103         u32 rcv_wnd;
 104         u32 snd_wl1;
 105         u32 cwnd;
 106         u32 ss_thresh;
 107         u16 srtt;
 108         u16 rtt_var;
 109         u32 ts_time;
 110         u32 ts_recent;
 111         u32 ts_recent_age;
 112         u32 total_rt;
 113         u32 ka_timeout_delta;
 114         u32 rt_timeout_delta;
 115         u8 dup_ack_cnt;
 116         u8 snd_wnd_probe_cnt;
 117         u8 ka_probe_cnt;
 118         u8 rt_cnt;
 119         u32 flow_label;
 120         u32 ka_timeout;
 121         u32 ka_interval;
 122         u32 max_rt_time;
 123         u32 initial_rcv_wnd;
 124         u8 ttl;
 125         u8 tos_or_tc;
 126         u16 remote_port;
 127         u16 local_port;
 128         u16 mss;
 129         u8 snd_wnd_scale;
 130         u8 rcv_wnd_scale;
 131         u32 ts_ticks_per_second;
 132         u16 da_timeout_value;
 133         u8 ack_frequency;
 134
 135         u8 update_flag;
 136         u8 default_cq;
 137         u32 max_seq_size;
 138         u32 max_recv_pdu_length;
 139         u32 max_send_pdu_length;
 140         u32 first_seq_length;
 141         u32 exp_stat_sn;
 142         u32 stat_sn;
 143         u16 physical_q0;
 144         u16 physical_q1;
 145         u8 abortive_dsconnect;
 146 };
 147
 148 static int
 149 qed_iscsi_async_event(struct qed_hwfn *p_hwfn,
 150                       u8 fw_event_code,
 151                       u16 echo, union event_ring_data *data, u8 fw_return_code)
 152 {
 153         if (p_hwfn->p_iscsi_info->event_cb) {
 154                 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
 155
 156                 return p_iscsi->event_cb(p_iscsi->event_context,
 157                                          fw_event_code, data);
 158         } else {
 159                 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
 160                 return -EINVAL;
 161         }
 162 }
 163
 164 static int
 165 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
 166                         enum spq_mode comp_mode,
 167                         struct qed_spq_comp_cb *p_comp_addr,
 168                         void *event_context, iscsi_event_cb_t async_event_cb)
 169 {
 170         struct iscsi_init_ramrod_params *p_ramrod = NULL;
 171         struct scsi_init_func_queues *p_queue = NULL;
 172         struct qed_iscsi_pf_params *p_params = NULL;
 173         struct iscsi_spe_func_init *p_init = NULL;
 174         struct qed_spq_entry *p_ent = NULL;
 175         struct qed_sp_init_data init_data;
 176         int rc = 0;
 177         u32 dval;
 178         u16 val;
 179         u8 i;
 180
 181         /* Get SPQ entry */
 182         memset(&init_data, 0, sizeof(init_data));
 183         init_data.cid = qed_spq_get_cid(p_hwfn);
 184         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 185         init_data.comp_mode = comp_mode;
 186         init_data.p_comp_data = p_comp_addr;
 187
 188         rc = qed_sp_init_request(p_hwfn, &p_ent,
 189                                  ISCSI_RAMROD_CMD_ID_INIT_FUNC,
 190                                  PROTOCOLID_ISCSI, &init_data);
 191         if (rc)
 192                 return rc;
 193
 194         p_ramrod = &p_ent->ramrod.iscsi_init;
 195         p_init = &p_ramrod->iscsi_init_spe;
 196         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 197         p_queue = &p_init->q_params;
 198
 199         /* Sanity */
 200         if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
 201                 DP_ERR(p_hwfn,
 202                        "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
 203                        p_params->num_queues,
 204                        p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
 205                 return -EINVAL;
 206         }
 207
 208         SET_FIELD(p_init->hdr.flags,
 209                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
 210         p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
 211
 212         val = p_params->half_way_close_timeout;
 213         p_init->half_way_close_timeout = cpu_to_le16(val);
 214         p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
 215         p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
 216         p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
 217         p_init->ooo_enable = p_params->ooo_enable;
 218         p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] +
 219                                   p_params->ll2_ooo_queue_id;
 220         p_init->func_params.log_page_size = p_params->log_page_size;
 221         val = p_params->num_tasks;
 222         p_init->func_params.num_tasks = cpu_to_le16(val);
 223         p_init->debug_mode.flags = p_params->debug_mode;
 224
 225         DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
 226                        p_params->glbl_q_params_addr);
 227
 228         val = p_params->cq_num_entries;
 229         p_queue->cq_num_entries = cpu_to_le16(val);
 230         val = p_params->cmdq_num_entries;
 231         p_queue->cmdq_num_entries = cpu_to_le16(val);
 232         p_queue->num_queues = p_params->num_queues;
 233         dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
 234         p_queue->queue_relative_offset = (u8)dval;
 235         p_queue->cq_sb_pi = p_params->gl_rq_pi;
 236         p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
 237
 238         for (i = 0; i < p_params->num_queues; i++) {
 239                 val = qed_get_igu_sb_id(p_hwfn, i);
 240                 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
 241         }
 242
 243         p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
 244
 245         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
 246                        p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
 247         p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
 248             p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
 249         val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
 250         p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 251         val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
 252         p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 253
 254         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
 255                        p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
 256         p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
 257             p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
 258         val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
 259         p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 260         val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
 261         p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 262         val = p_params->rq_buffer_size;
 263         p_queue->rq_buffer_size = cpu_to_le16(val);
 264         if (p_params->is_target) {
 265                 SET_FIELD(p_queue->q_validity,
 266                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 267                 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
 268                         SET_FIELD(p_queue->q_validity,
 269                                   SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
 270                 SET_FIELD(p_queue->q_validity,
 271                           SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
 272         } else {
 273                 SET_FIELD(p_queue->q_validity,
 274                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 275         }
 276         p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
 277         val = p_params->tx_sws_timer;
 278         p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
 279         p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
 280
 281         p_hwfn->p_iscsi_info->event_context = event_context;
 282         p_hwfn->p_iscsi_info->event_cb = async_event_cb;
 283
 284         qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
 285                                   qed_iscsi_async_event);
 286
 287         return qed_spq_post(p_hwfn, p_ent, NULL);
 288 }
 289
 290 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
 291                                      struct qed_iscsi_conn *p_conn,
 292                                      enum spq_mode comp_mode,
 293                                      struct qed_spq_comp_cb *p_comp_addr)
 294 {
 295         struct iscsi_spe_conn_offload *p_ramrod = NULL;
 296         struct tcp_offload_params_opt2 *p_tcp2 = NULL;
 297         struct tcp_offload_params *p_tcp = NULL;
 298         struct qed_spq_entry *p_ent = NULL;
 299         struct qed_sp_init_data init_data;
 300         dma_addr_t r2tq_pbl_addr;
 301         dma_addr_t xhq_pbl_addr;
 302         dma_addr_t uhq_pbl_addr;
 303         u16 physical_q;
 304         int rc = 0;
 305         u32 dval;
 306         u16 wval;
 307         u16 *p;
 308         u8 i;
 309
 310         /* Get SPQ entry */
 311         memset(&init_data, 0, sizeof(init_data));
 312         init_data.cid = p_conn->icid;
 313         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 314         init_data.comp_mode = comp_mode;
 315         init_data.p_comp_data = p_comp_addr;
 316
 317         rc = qed_sp_init_request(p_hwfn, &p_ent,
 318                                  ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
 319                                  PROTOCOLID_ISCSI, &init_data);
 320         if (rc)
 321                 return rc;
 322
 323         p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
 324
 325         /* Transmission PQ is the first of the PF */
 326         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
 327         p_conn->physical_q0 = cpu_to_le16(physical_q);
 328         p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
 329
 330         /* iSCSI Pure-ACK PQ */
 331         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
 332         p_conn->physical_q1 = cpu_to_le16(physical_q);
 333         p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
 334
 335         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
 336         SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
 337                   p_conn->layer_code);
 338
 339         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 340         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 341
 342         DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
 343
 344         r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
 345         DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
 346
 347         xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
 348         DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
 349
 350         uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
 351         DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
 352
 353         p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
 354         p_ramrod->iscsi.flags = p_conn->offl_flags;
 355         p_ramrod->iscsi.default_cq = p_conn->default_cq;
 356         p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
 357
 358         if (!GET_FIELD(p_ramrod->iscsi.flags,
 359                        ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
 360                 p_tcp = &p_ramrod->tcp;
 361
 362                 p = (u16 *)p_conn->local_mac;
 363                 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
 364                 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
 365                 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
 366
 367                 p = (u16 *)p_conn->remote_mac;
 368                 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
 369                 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
 370                 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
 371
 372                 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
 373
 374                 p_tcp->flags = p_conn->tcp_flags;
 375                 p_tcp->ip_version = p_conn->ip_version;
 376                 for (i = 0; i < 4; i++) {
 377                         dval = p_conn->remote_ip[i];
 378                         p_tcp->remote_ip[i] = cpu_to_le32(dval);
 379                         dval = p_conn->local_ip[i];
 380                         p_tcp->local_ip[i] = cpu_to_le32(dval);
 381                 }
 382                 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
 383                 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
 384
 385                 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
 386                 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
 387                 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
 388                 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
 389                 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
 390                 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
 391                 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
 392                 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
 393                 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
 394                 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
 395                 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
 396                 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
 397                 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
 398                 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
 399                 dval = p_conn->ka_timeout_delta;
 400                 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
 401                 dval = p_conn->rt_timeout_delta;
 402                 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
 403                 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
 404                 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
 405                 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
 406                 p_tcp->rt_cnt = p_conn->rt_cnt;
 407                 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
 408                 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 409                 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
 410                 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 411                 dval = p_conn->initial_rcv_wnd;
 412                 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
 413                 p_tcp->ttl = p_conn->ttl;
 414                 p_tcp->tos_or_tc = p_conn->tos_or_tc;
 415                 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
 416                 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
 417                 p_tcp->mss = cpu_to_le16(p_conn->mss);
 418                 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
 419                 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 420                 wval = p_conn->da_timeout_value;
 421                 p_tcp->da_timeout_value = cpu_to_le16(wval);
 422                 p_tcp->ack_frequency = p_conn->ack_frequency;
 423                 p_tcp->connect_mode = p_conn->connect_mode;
 424         } else {
 425                 p_tcp2 =
 426                     &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
 427
 428                 p = (u16 *)p_conn->local_mac;
 429                 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
 430                 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
 431                 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
 432
 433                 p = (u16 *)p_conn->remote_mac;
 434                 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
 435                 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
 436                 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
 437
 438                 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
 439                 p_tcp2->flags = p_conn->tcp_flags;
 440
 441                 p_tcp2->ip_version = p_conn->ip_version;
 442                 for (i = 0; i < 4; i++) {
 443                         dval = p_conn->remote_ip[i];
 444                         p_tcp2->remote_ip[i] = cpu_to_le32(dval);
 445                         dval = p_conn->local_ip[i];
 446                         p_tcp2->local_ip[i] = cpu_to_le32(dval);
 447                 }
 448
 449                 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
 450                 p_tcp2->ttl = p_conn->ttl;
 451                 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
 452                 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
 453                 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
 454                 p_tcp2->mss = cpu_to_le16(p_conn->mss);
 455                 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 456                 p_tcp2->connect_mode = p_conn->connect_mode;
 457                 wval = p_conn->syn_ip_payload_length;
 458                 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
 459                 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
 460                 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
 461         }
 462
 463         return qed_spq_post(p_hwfn, p_ent, NULL);
 464 }
 465
 466 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
 467                                     struct qed_iscsi_conn *p_conn,
 468                                     enum spq_mode comp_mode,
 469                                     struct qed_spq_comp_cb *p_comp_addr)
 470 {
 471         struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
 472         struct qed_spq_entry *p_ent = NULL;
 473         struct qed_sp_init_data init_data;
 474         int rc = -EINVAL;
 475         u32 dval;
 476
 477         /* Get SPQ entry */
 478         memset(&init_data, 0, sizeof(init_data));
 479         init_data.cid = p_conn->icid;
 480         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 481         init_data.comp_mode = comp_mode;
 482         init_data.p_comp_data = p_comp_addr;
 483
 484         rc = qed_sp_init_request(p_hwfn, &p_ent,
 485                                  ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
 486                                  PROTOCOLID_ISCSI, &init_data);
 487         if (rc)
 488                 return rc;
 489
 490         p_ramrod = &p_ent->ramrod.iscsi_conn_update;
 491         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
 492         SET_FIELD(p_ramrod->hdr.flags,
 493                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 494
 495         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 496         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 497         p_ramrod->flags = p_conn->update_flag;
 498         p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
 499         dval = p_conn->max_recv_pdu_length;
 500         p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
 501         dval = p_conn->max_send_pdu_length;
 502         p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
 503         dval = p_conn->first_seq_length;
 504         p_ramrod->first_seq_length = cpu_to_le32(dval);
 505         p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
 506
 507         return qed_spq_post(p_hwfn, p_ent, NULL);
 508 }
 509
 510 static int
 511 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
 512                         struct qed_iscsi_conn *p_conn,
 513                         enum spq_mode comp_mode,
 514                         struct qed_spq_comp_cb *p_comp_addr)
 515 {
 516         struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
 517         struct qed_spq_entry *p_ent = NULL;
 518         struct qed_sp_init_data init_data;
 519         int rc = -EINVAL;
 520         u8 ucval;
 521
 522         /* Get SPQ entry */
 523         memset(&init_data, 0, sizeof(init_data));
 524         init_data.cid = p_conn->icid;
 525         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 526         init_data.comp_mode = comp_mode;
 527         init_data.p_comp_data = p_comp_addr;
 528
 529         rc = qed_sp_init_request(p_hwfn, &p_ent,
 530                                  ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
 531                                  PROTOCOLID_ISCSI, &init_data);
 532         if (rc)
 533                 return rc;
 534
 535         p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
 536         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE;
 537         SET_FIELD(p_ramrod->hdr.flags,
 538                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 539
 540         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 541         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 542         ucval = p_conn->remote_mac[1];
 543         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
 544         ucval = p_conn->remote_mac[0];
 545         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
 546         ucval = p_conn->remote_mac[3];
 547         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
 548         ucval = p_conn->remote_mac[2];
 549         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
 550         ucval = p_conn->remote_mac[5];
 551         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
 552         ucval = p_conn->remote_mac[4];
 553         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
 554
 555         return qed_spq_post(p_hwfn, p_ent, NULL);
 556 }
 557
 558 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
 559                                        struct qed_iscsi_conn *p_conn,
 560                                        enum spq_mode comp_mode,
 561                                        struct qed_spq_comp_cb *p_comp_addr)
 562 {
 563         struct iscsi_spe_conn_termination *p_ramrod = NULL;
 564         struct qed_spq_entry *p_ent = NULL;
 565         struct qed_sp_init_data init_data;
 566         int rc = -EINVAL;
 567
 568         /* Get SPQ entry */
 569         memset(&init_data, 0, sizeof(init_data));
 570         init_data.cid = p_conn->icid;
 571         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 572         init_data.comp_mode = comp_mode;
 573         init_data.p_comp_data = p_comp_addr;
 574
 575         rc = qed_sp_init_request(p_hwfn, &p_ent,
 576                                  ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
 577                                  PROTOCOLID_ISCSI, &init_data);
 578         if (rc)
 579                 return rc;
 580
 581         p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
 582         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
 583         SET_FIELD(p_ramrod->hdr.flags,
 584                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 585
 586         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 587         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 588         p_ramrod->abortive = p_conn->abortive_dsconnect;
 589
 590         DMA_REGPAIR_LE(p_ramrod->query_params_addr,
 591                        p_conn->tcp_upload_params_phys_addr);
 592         DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
 593
 594         return qed_spq_post(p_hwfn, p_ent, NULL);
 595 }
 596
 597 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
 598                                       struct qed_iscsi_conn *p_conn,
 599                                       enum spq_mode comp_mode,
 600                                       struct qed_spq_comp_cb *p_comp_addr)
 601 {
 602         struct iscsi_slow_path_hdr *p_ramrod = NULL;
 603         struct qed_spq_entry *p_ent = NULL;
 604         struct qed_sp_init_data init_data;
 605         int rc = -EINVAL;
 606
 607         /* Get SPQ entry */
 608         memset(&init_data, 0, sizeof(init_data));
 609         init_data.cid = p_conn->icid;
 610         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 611         init_data.comp_mode = comp_mode;
 612         init_data.p_comp_data = p_comp_addr;
 613
 614         rc = qed_sp_init_request(p_hwfn, &p_ent,
 615                                  ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
 616                                  PROTOCOLID_ISCSI, &init_data);
 617         if (rc)
 618                 return rc;
 619
 620         p_ramrod = &p_ent->ramrod.iscsi_empty;
 621         p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
 622         SET_FIELD(p_ramrod->flags,
 623                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 624
 625         return qed_spq_post(p_hwfn, p_ent, NULL);
 626 }
 627
 628 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
 629                                   enum spq_mode comp_mode,
 630                                   struct qed_spq_comp_cb *p_comp_addr)
 631 {
 632         struct iscsi_spe_func_dstry *p_ramrod = NULL;
 633         struct qed_spq_entry *p_ent = NULL;
 634         struct qed_sp_init_data init_data;
 635         int rc = 0;
 636
 637         /* Get SPQ entry */
 638         memset(&init_data, 0, sizeof(init_data));
 639         init_data.cid = qed_spq_get_cid(p_hwfn);
 640         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 641         init_data.comp_mode = comp_mode;
 642         init_data.p_comp_data = p_comp_addr;
 643
 644         rc = qed_sp_init_request(p_hwfn, &p_ent,
 645                                  ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
 646                                  PROTOCOLID_ISCSI, &init_data);
 647         if (rc)
 648                 return rc;
 649
 650         p_ramrod = &p_ent->ramrod.iscsi_destroy;
 651         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
 652
 653         rc = qed_spq_post(p_hwfn, p_ent, NULL);
 654
 655         qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
 656         return rc;
 657 }
 658
 659 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
 660 {
 661         return (u8 __iomem *)p_hwfn->doorbells +
 662                              qed_db_addr(cid, DQ_DEMS_LEGACY);
 663 }
 664
 665 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
 666                                                     u8 bdq_id)
 667 {
 668         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 669                 return (u8 __iomem *)p_hwfn->regview +
 670                        GTT_BAR0_MAP_REG_MSDM_RAM +
 671                        MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 672                                                                   QED_BDQ),
 673                                                        bdq_id);
 674         } else {
 675                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 676                 return NULL;
 677         }
 678 }
 679
 680 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
 681                                                       u8 bdq_id)
 682 {
 683         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 684                 return (u8 __iomem *)p_hwfn->regview +
 685                        GTT_BAR0_MAP_REG_TSDM_RAM +
 686                        TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 687                                                                   QED_BDQ),
 688                                                        bdq_id);
 689         } else {
 690                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 691                 return NULL;
 692         }
 693 }
 694
 695 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
 696                                       struct qed_iscsi_conn *p_conn)
 697 {
 698         if (!p_conn->queue_cnts_virt_addr)
 699                 goto nomem;
 700         memset(p_conn->queue_cnts_virt_addr, 0,
 701                sizeof(*p_conn->queue_cnts_virt_addr));
 702
 703         if (!p_conn->tcp_upload_params_virt_addr)
 704                 goto nomem;
 705         memset(p_conn->tcp_upload_params_virt_addr, 0,
 706                sizeof(*p_conn->tcp_upload_params_virt_addr));
 707
 708         if (!p_conn->r2tq.p_virt_addr)
 709                 goto nomem;
 710         qed_chain_pbl_zero_mem(&p_conn->r2tq);
 711
 712         if (!p_conn->uhq.p_virt_addr)
 713                 goto nomem;
 714         qed_chain_pbl_zero_mem(&p_conn->uhq);
 715
 716         if (!p_conn->xhq.p_virt_addr)
 717                 goto nomem;
 718         qed_chain_pbl_zero_mem(&p_conn->xhq);
 719
 720         return 0;
 721 nomem:
 722         return -ENOMEM;
 723 }
 724
 725 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
 726                                          struct qed_iscsi_conn **p_out_conn)
 727 {
 728         u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
 729         struct scsi_terminate_extra_params *p_q_cnts = NULL;
 730         struct qed_iscsi_pf_params *p_params = NULL;
 731         struct tcp_upload_params *p_tcp = NULL;
 732         struct qed_iscsi_conn *p_conn = NULL;
 733         int rc = 0;
 734
 735         /* Try finding a free connection that can be used */
 736         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 737         if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
 738                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 739                                           struct qed_iscsi_conn, list_entry);
 740         if (p_conn) {
 741                 list_del(&p_conn->list_entry);
 742                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 743                 *p_out_conn = p_conn;
 744                 return 0;
 745         }
 746         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 747
 748         /* Need to allocate a new connection */
 749         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 750
 751         p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
 752         if (!p_conn)
 753                 return -ENOMEM;
 754
 755         p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 756                                       sizeof(*p_q_cnts),
 757                                       &p_conn->queue_cnts_phys_addr,
 758                                       GFP_KERNEL);
 759         if (!p_q_cnts)
 760                 goto nomem_queue_cnts_param;
 761         p_conn->queue_cnts_virt_addr = p_q_cnts;
 762
 763         p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 764                                    sizeof(*p_tcp),
 765                                    &p_conn->tcp_upload_params_phys_addr,
 766                                    GFP_KERNEL);
 767         if (!p_tcp)
 768                 goto nomem_upload_param;
 769         p_conn->tcp_upload_params_virt_addr = p_tcp;
 770
 771         r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
 772                             QED_CHAIN_PAGE_SIZE / 0x80;
 773         rc = qed_chain_alloc(p_hwfn->cdev,
 774                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 775                              QED_CHAIN_MODE_PBL,
 776                              QED_CHAIN_CNT_TYPE_U16,
 777                              r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
 778         if (rc)
 779                 goto nomem_r2tq;
 780
 781         uhq_num_elements = p_params->num_uhq_pages_in_ring *
 782                            QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
 783         rc = qed_chain_alloc(p_hwfn->cdev,
 784                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 785                              QED_CHAIN_MODE_PBL,
 786                              QED_CHAIN_CNT_TYPE_U16,
 787                              uhq_num_elements,
 788                              sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
 789         if (rc)
 790                 goto nomem_uhq;
 791
 792         xhq_num_elements = uhq_num_elements;
 793         rc = qed_chain_alloc(p_hwfn->cdev,
 794                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 795                              QED_CHAIN_MODE_PBL,
 796                              QED_CHAIN_CNT_TYPE_U16,
 797                              xhq_num_elements,
 798                              sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
 799         if (rc)
 800                 goto nomem;
 801
 802         p_conn->free_on_delete = true;
 803         *p_out_conn = p_conn;
 804         return 0;
 805
 806 nomem:
 807         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 808 nomem_uhq:
 809         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 810 nomem_r2tq:
 811         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 812                           sizeof(struct tcp_upload_params),
 813                           p_conn->tcp_upload_params_virt_addr,
 814                           p_conn->tcp_upload_params_phys_addr);
 815 nomem_upload_param:
 816         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 817                           sizeof(struct scsi_terminate_extra_params),
 818                           p_conn->queue_cnts_virt_addr,
 819                           p_conn->queue_cnts_phys_addr);
 820 nomem_queue_cnts_param:
 821         kfree(p_conn);
 822
 823         return -ENOMEM;
 824 }
 825
 826 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
 827                                         struct qed_iscsi_conn *p_in_conn,
 828                                         struct qed_iscsi_conn **p_out_conn)
 829 {
 830         struct qed_iscsi_conn *p_conn = NULL;
 831         int rc = 0;
 832         u32 icid;
 833
 834         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 835         rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
 836         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 837         if (rc)
 838                 return rc;
 839
 840         /* Use input connection or allocate a new one */
 841         if (p_in_conn)
 842                 p_conn = p_in_conn;
 843         else
 844                 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
 845
 846         if (!rc)
 847                 rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
 848
 849         if (rc) {
 850                 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 851                 qed_cxt_release_cid(p_hwfn, icid);
 852                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 853                 return rc;
 854         }
 855
 856         p_conn->icid = icid;
 857         p_conn->conn_id = (u16)icid;
 858         p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
 859
 860         *p_out_conn = p_conn;
 861
 862         return rc;
 863 }
 864
 865 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
 866                                          struct qed_iscsi_conn *p_conn)
 867 {
 868         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 869         list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
 870         qed_cxt_release_cid(p_hwfn, p_conn->icid);
 871         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 872 }
 873
 874 void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
 875                                struct qed_iscsi_conn *p_conn)
 876 {
 877         qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
 878         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 879         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 880         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 881                           sizeof(struct tcp_upload_params),
 882                           p_conn->tcp_upload_params_virt_addr,
 883                           p_conn->tcp_upload_params_phys_addr);
 884         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 885                           sizeof(struct scsi_terminate_extra_params),
 886                           p_conn->queue_cnts_virt_addr,
 887                           p_conn->queue_cnts_phys_addr);
 888         kfree(p_conn);
 889 }
 890
 891 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
 892 {
 893         struct qed_iscsi_info *p_iscsi_info;
 894
 895         p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
 896         if (!p_iscsi_info)
 897                 return -ENOMEM;
 898
 899         INIT_LIST_HEAD(&p_iscsi_info->free_list);
 900
 901         p_hwfn->p_iscsi_info = p_iscsi_info;
 902         return 0;
 903 }
 904
 905 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
 906 {
 907         spin_lock_init(&p_hwfn->p_iscsi_info->lock);
 908 }
 909
 910 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
 911 {
 912         struct qed_iscsi_conn *p_conn = NULL;
 913
 914         if (!p_hwfn->p_iscsi_info)
 915                 return;
 916
 917         while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
 918                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 919                                           struct qed_iscsi_conn, list_entry);
 920                 if (p_conn) {
 921                         list_del(&p_conn->list_entry);
 922                         qed_iscsi_free_connection(p_hwfn, p_conn);
 923                 }
 924         }
 925
 926         kfree(p_hwfn->p_iscsi_info);
 927         p_hwfn->p_iscsi_info = NULL;
 928 }
 929
 930 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
 931                                   struct qed_ptt *p_ptt,
 932                                   struct qed_iscsi_stats *p_stats)
 933 {
 934         struct tstorm_iscsi_stats_drv tstats;
 935         u32 tstats_addr;
 936
 937         memset(&tstats, 0, sizeof(tstats));
 938         tstats_addr = BAR0_MAP_REG_TSDM_RAM +
 939                       TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 940         qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
 941
 942         p_stats->iscsi_rx_bytes_cnt =
 943             HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
 944         p_stats->iscsi_rx_packet_cnt =
 945             HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
 946         p_stats->iscsi_rx_new_ooo_isle_events_cnt =
 947             HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
 948         p_stats->iscsi_cmdq_threshold_cnt =
 949             le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
 950         p_stats->iscsi_rq_threshold_cnt =
 951             le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
 952         p_stats->iscsi_immq_threshold_cnt =
 953             le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
 954 }
 955
 956 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
 957                                   struct qed_ptt *p_ptt,
 958                                   struct qed_iscsi_stats *p_stats)
 959 {
 960         struct mstorm_iscsi_stats_drv mstats;
 961         u32 mstats_addr;
 962
 963         memset(&mstats, 0, sizeof(mstats));
 964         mstats_addr = BAR0_MAP_REG_MSDM_RAM +
 965                       MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 966         qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
 967
 968         p_stats->iscsi_rx_dropped_pdus_task_not_valid =
 969             HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
 970 }
 971
 972 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
 973                                   struct qed_ptt *p_ptt,
 974                                   struct qed_iscsi_stats *p_stats)
 975 {
 976         struct ustorm_iscsi_stats_drv ustats;
 977         u32 ustats_addr;
 978
 979         memset(&ustats, 0, sizeof(ustats));
 980         ustats_addr = BAR0_MAP_REG_USDM_RAM +
 981                       USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 982         qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
 983
 984         p_stats->iscsi_rx_data_pdu_cnt =
 985             HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
 986         p_stats->iscsi_rx_r2t_pdu_cnt =
 987             HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
 988         p_stats->iscsi_rx_total_pdu_cnt =
 989             HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
 990 }
 991
 992 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
 993                                   struct qed_ptt *p_ptt,
 994                                   struct qed_iscsi_stats *p_stats)
 995 {
 996         struct xstorm_iscsi_stats_drv xstats;
 997         u32 xstats_addr;
 998
 999         memset(&xstats, 0, sizeof(xstats));
1000         xstats_addr = BAR0_MAP_REG_XSDM_RAM +
1001                       XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1002         qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
1003
1004         p_stats->iscsi_tx_go_to_slow_start_event_cnt =
1005             HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
1006         p_stats->iscsi_tx_fast_retransmit_event_cnt =
1007             HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
1008 }
1009
1010 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
1011                                   struct qed_ptt *p_ptt,
1012                                   struct qed_iscsi_stats *p_stats)
1013 {
1014         struct ystorm_iscsi_stats_drv ystats;
1015         u32 ystats_addr;
1016
1017         memset(&ystats, 0, sizeof(ystats));
1018         ystats_addr = BAR0_MAP_REG_YSDM_RAM +
1019                       YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1020         qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
1021
1022         p_stats->iscsi_tx_data_pdu_cnt =
1023             HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
1024         p_stats->iscsi_tx_r2t_pdu_cnt =
1025             HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
1026         p_stats->iscsi_tx_total_pdu_cnt =
1027             HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1028 }
1029
1030 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1031                                   struct qed_ptt *p_ptt,
1032                                   struct qed_iscsi_stats *p_stats)
1033 {
1034         struct pstorm_iscsi_stats_drv pstats;
1035         u32 pstats_addr;
1036
1037         memset(&pstats, 0, sizeof(pstats));
1038         pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1039                       PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1040         qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1041
1042         p_stats->iscsi_tx_bytes_cnt =
1043             HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1044         p_stats->iscsi_tx_packet_cnt =
1045             HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1046 }
1047
1048 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1049                                struct qed_iscsi_stats *stats)
1050 {
1051         struct qed_ptt *p_ptt;
1052
1053         memset(stats, 0, sizeof(*stats));
1054
1055         p_ptt = qed_ptt_acquire(p_hwfn);
1056         if (!p_ptt) {
1057                 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1058                 return -EAGAIN;
1059         }
1060
1061         _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1062         _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1063         _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1064
1065         _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1066         _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1067         _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1068
1069         qed_ptt_release(p_hwfn, p_ptt);
1070
1071         return 0;
1072 }
1073
1074 struct qed_hash_iscsi_con {
1075         struct hlist_node node;
1076         struct qed_iscsi_conn *con;
1077 };
1078
1079 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1080                                    struct qed_dev_iscsi_info *info)
1081 {
1082         struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1083
1084         int rc;
1085
1086         memset(info, 0, sizeof(*info));
1087         rc = qed_fill_dev_info(cdev, &info->common);
1088
1089         info->primary_dbq_rq_addr =
1090             qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1091         info->secondary_bdq_rq_addr =
1092             qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1093
1094         info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1095
1096         return rc;
1097 }
1098
1099 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1100                                    struct qed_iscsi_cb_ops *ops, void *cookie)
1101 {
1102         cdev->protocol_ops.iscsi = ops;
1103         cdev->ops_cookie = cookie;
1104 }
1105
1106 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1107                                                      u32 handle)
1108 {
1109         struct qed_hash_iscsi_con *hash_con = NULL;
1110
1111         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1112                 return NULL;
1113
1114         hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1115                 if (hash_con->con->icid == handle)
1116                         break;
1117         }
1118
1119         if (!hash_con || (hash_con->con->icid != handle))
1120                 return NULL;
1121
1122         return hash_con;
1123 }
1124
1125 static int qed_iscsi_stop(struct qed_dev *cdev)
1126 {
1127         int rc;
1128
1129         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1130                 DP_NOTICE(cdev, "iscsi already stopped\n");
1131                 return 0;
1132         }
1133
1134         if (!hash_empty(cdev->connections)) {
1135                 DP_NOTICE(cdev,
1136                           "Can't stop iscsi - not all connections were returned\n");
1137                 return -EINVAL;
1138         }
1139
1140         /* Stop the iscsi */
1141         rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1142                                     QED_SPQ_MODE_EBLOCK, NULL);
1143         cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1144
1145         return rc;
1146 }
1147
1148 static int qed_iscsi_start(struct qed_dev *cdev,
1149                            struct qed_iscsi_tid *tasks,
1150                            void *event_context,
1151                            iscsi_event_cb_t async_event_cb)
1152 {
1153         int rc;
1154         struct qed_tid_mem *tid_info;
1155
1156         if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1157                 DP_NOTICE(cdev, "iscsi already started;\n");
1158                 return 0;
1159         }
1160
1161         rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1162                                      QED_SPQ_MODE_EBLOCK, NULL, event_context,
1163                                      async_event_cb);
1164         if (rc) {
1165                 DP_NOTICE(cdev, "Failed to start iscsi\n");
1166                 return rc;
1167         }
1168
1169         cdev->flags |= QED_FLAG_STORAGE_STARTED;
1170         hash_init(cdev->connections);
1171
1172         if (!tasks)
1173                 return 0;
1174
1175         tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1176
1177         if (!tid_info) {
1178                 qed_iscsi_stop(cdev);
1179                 return -ENOMEM;
1180         }
1181
1182         rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1183                                       tid_info);
1184         if (rc) {
1185                 DP_NOTICE(cdev, "Failed to gather task information\n");
1186                 qed_iscsi_stop(cdev);
1187                 kfree(tid_info);
1188                 return rc;
1189         }
1190
1191         /* Fill task information */
1192         tasks->size = tid_info->tid_size;
1193         tasks->num_tids_per_block = tid_info->num_tids_per_block;
1194         memcpy(tasks->blocks, tid_info->blocks,
1195                MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1196
1197         kfree(tid_info);
1198
1199         return 0;
1200 }
1201
1202 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1203                                   u32 *handle,
1204                                   u32 *fw_cid, void __iomem **p_doorbell)
1205 {
1206         struct qed_hash_iscsi_con *hash_con;
1207         int rc;
1208
1209         /* Allocate a hashed connection */
1210         hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1211         if (!hash_con)
1212                 return -ENOMEM;
1213
1214         /* Acquire the connection */
1215         rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1216                                           &hash_con->con);
1217         if (rc) {
1218                 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1219                 kfree(hash_con);
1220                 return rc;
1221         }
1222
1223         /* Added the connection to hash table */
1224         *handle = hash_con->con->icid;
1225         *fw_cid = hash_con->con->fw_cid;
1226         hash_add(cdev->connections, &hash_con->node, *handle);
1227
1228         if (p_doorbell)
1229                 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1230                                                     *handle);
1231
1232         return 0;
1233 }
1234
1235 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1236 {
1237         struct qed_hash_iscsi_con *hash_con;
1238
1239         hash_con = qed_iscsi_get_hash(cdev, handle);
1240         if (!hash_con) {
1241                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1242                           handle);
1243                 return -EINVAL;
1244         }
1245
1246         hlist_del(&hash_con->node);
1247         qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1248         kfree(hash_con);
1249
1250         return 0;
1251 }
1252
1253 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1254                                   u32 handle,
1255                                   struct qed_iscsi_params_offload *conn_info)
1256 {
1257         struct qed_hash_iscsi_con *hash_con;
1258         struct qed_iscsi_conn *con;
1259
1260         hash_con = qed_iscsi_get_hash(cdev, handle);
1261         if (!hash_con) {
1262                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1263                           handle);
1264                 return -EINVAL;
1265         }
1266
1267         /* Update the connection with information from the params */
1268         con = hash_con->con;
1269
1270         ether_addr_copy(con->local_mac, conn_info->src.mac);
1271         ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1272         memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1273         memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1274         con->local_port = conn_info->src.port;
1275         con->remote_port = conn_info->dst.port;
1276
1277         con->layer_code = conn_info->layer_code;
1278         con->sq_pbl_addr = conn_info->sq_pbl_addr;
1279         con->initial_ack = conn_info->initial_ack;
1280         con->vlan_id = conn_info->vlan_id;
1281         con->tcp_flags = conn_info->tcp_flags;
1282         con->ip_version = conn_info->ip_version;
1283         con->default_cq = conn_info->default_cq;
1284         con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1285         con->dup_ack_theshold = conn_info->dup_ack_theshold;
1286         con->rcv_next = conn_info->rcv_next;
1287         con->snd_una = conn_info->snd_una;
1288         con->snd_next = conn_info->snd_next;
1289         con->snd_max = conn_info->snd_max;
1290         con->snd_wnd = conn_info->snd_wnd;
1291         con->rcv_wnd = conn_info->rcv_wnd;
1292         con->snd_wl1 = conn_info->snd_wl1;
1293         con->cwnd = conn_info->cwnd;
1294         con->ss_thresh = conn_info->ss_thresh;
1295         con->srtt = conn_info->srtt;
1296         con->rtt_var = conn_info->rtt_var;
1297         con->ts_time = conn_info->ts_time;
1298         con->ts_recent = conn_info->ts_recent;
1299         con->ts_recent_age = conn_info->ts_recent_age;
1300         con->total_rt = conn_info->total_rt;
1301         con->ka_timeout_delta = conn_info->ka_timeout_delta;
1302         con->rt_timeout_delta = conn_info->rt_timeout_delta;
1303         con->dup_ack_cnt = conn_info->dup_ack_cnt;
1304         con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1305         con->ka_probe_cnt = conn_info->ka_probe_cnt;
1306         con->rt_cnt = conn_info->rt_cnt;
1307         con->flow_label = conn_info->flow_label;
1308         con->ka_timeout = conn_info->ka_timeout;
1309         con->ka_interval = conn_info->ka_interval;
1310         con->max_rt_time = conn_info->max_rt_time;
1311         con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1312         con->ttl = conn_info->ttl;
1313         con->tos_or_tc = conn_info->tos_or_tc;
1314         con->remote_port = conn_info->remote_port;
1315         con->local_port = conn_info->local_port;
1316         con->mss = conn_info->mss;
1317         con->snd_wnd_scale = conn_info->snd_wnd_scale;
1318         con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1319         con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
1320         con->da_timeout_value = conn_info->da_timeout_value;
1321         con->ack_frequency = conn_info->ack_frequency;
1322
1323         /* Set default values on other connection fields */
1324         con->offl_flags = 0x1;
1325
1326         return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1327                                          QED_SPQ_MODE_EBLOCK, NULL);
1328 }
1329
1330 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1331                                  u32 handle,
1332                                  struct qed_iscsi_params_update *conn_info)
1333 {
1334         struct qed_hash_iscsi_con *hash_con;
1335         struct qed_iscsi_conn *con;
1336
1337         hash_con = qed_iscsi_get_hash(cdev, handle);
1338         if (!hash_con) {
1339                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1340                           handle);
1341                 return -EINVAL;
1342         }
1343
1344         /* Update the connection with information from the params */
1345         con = hash_con->con;
1346         con->update_flag = conn_info->update_flag;
1347         con->max_seq_size = conn_info->max_seq_size;
1348         con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1349         con->max_send_pdu_length = conn_info->max_send_pdu_length;
1350         con->first_seq_length = conn_info->first_seq_length;
1351         con->exp_stat_sn = conn_info->exp_stat_sn;
1352
1353         return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1354                                         QED_SPQ_MODE_EBLOCK, NULL);
1355 }
1356
1357 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1358 {
1359         struct qed_hash_iscsi_con *hash_con;
1360
1361         hash_con = qed_iscsi_get_hash(cdev, handle);
1362         if (!hash_con) {
1363                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1364                           handle);
1365                 return -EINVAL;
1366         }
1367
1368         return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1369                                           hash_con->con,
1370                                           QED_SPQ_MODE_EBLOCK, NULL);
1371 }
1372
1373 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1374                                   u32 handle, u8 abrt_conn)
1375 {
1376         struct qed_hash_iscsi_con *hash_con;
1377
1378         hash_con = qed_iscsi_get_hash(cdev, handle);
1379         if (!hash_con) {
1380                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1381                           handle);
1382                 return -EINVAL;
1383         }
1384
1385         hash_con->con->abortive_dsconnect = abrt_conn;
1386
1387         return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1388                                            hash_con->con,
1389                                            QED_SPQ_MODE_EBLOCK, NULL);
1390 }
1391
1392 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1393 {
1394         return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1395 }
1396
1397 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1398                                 u32 handle, const u8 *mac)
1399 {
1400         struct qed_hash_iscsi_con *hash_con;
1401
1402         hash_con = qed_iscsi_get_hash(cdev, handle);
1403         if (!hash_con) {
1404                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1405                           handle);
1406                 return -EINVAL;
1407         }
1408
1409         return qed_sp_iscsi_mac_update(QED_LEADING_HWFN(cdev),
1410                                        hash_con->con,
1411                                        QED_SPQ_MODE_EBLOCK, NULL);
1412 }
1413
1414 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1415                                   struct qed_mcp_iscsi_stats *stats)
1416 {
1417         struct qed_iscsi_stats proto_stats;
1418
1419         /* Retrieve FW statistics */
1420         memset(&proto_stats, 0, sizeof(proto_stats));
1421         if (qed_iscsi_stats(cdev, &proto_stats)) {
1422                 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1423                            "Failed to collect ISCSI statistics\n");
1424                 return;
1425         }
1426
1427         /* Translate FW statistics into struct */
1428         stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1429         stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1430         stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1431         stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1432 }
1433
1434 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1435         .common = &qed_common_ops_pass,
1436         .ll2 = &qed_ll2_ops_pass,
1437         .fill_dev_info = &qed_fill_iscsi_dev_info,
1438         .register_ops = &qed_register_iscsi_ops,
1439         .start = &qed_iscsi_start,
1440         .stop = &qed_iscsi_stop,
1441         .acquire_conn = &qed_iscsi_acquire_conn,
1442         .release_conn = &qed_iscsi_release_conn,
1443         .offload_conn = &qed_iscsi_offload_conn,
1444         .update_conn = &qed_iscsi_update_conn,
1445         .destroy_conn = &qed_iscsi_destroy_conn,
1446         .clear_sq = &qed_iscsi_clear_conn_sq,
1447         .get_stats = &qed_iscsi_stats,
1448         .change_mac = &qed_iscsi_change_mac,
1449 };
1450
1451 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1452 {
1453         return &qed_iscsi_ops_pass;
1454 }
1455 EXPORT_SYMBOL(qed_get_iscsi_ops);
1456
1457 void qed_put_iscsi_ops(void)
1458 {
1459 }
1460 EXPORT_SYMBOL(qed_put_iscsi_ops);