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         u16 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_recent;
 110         u32 ts_recent_age;
 111         u32 total_rt;
 112         u32 ka_timeout_delta;
 113         u32 rt_timeout_delta;
 114         u8 dup_ack_cnt;
 115         u8 snd_wnd_probe_cnt;
 116         u8 ka_probe_cnt;
 117         u8 rt_cnt;
 118         u32 flow_label;
 119         u32 ka_timeout;
 120         u32 ka_interval;
 121         u32 max_rt_time;
 122         u32 initial_rcv_wnd;
 123         u8 ttl;
 124         u8 tos_or_tc;
 125         u16 remote_port;
 126         u16 local_port;
 127         u16 mss;
 128         u8 snd_wnd_scale;
 129         u8 rcv_wnd_scale;
 130         u16 da_timeout_value;
 131         u8 ack_frequency;
 132
 133         u8 update_flag;
 134         u8 default_cq;
 135         u32 max_seq_size;
 136         u32 max_recv_pdu_length;
 137         u32 max_send_pdu_length;
 138         u32 first_seq_length;
 139         u32 exp_stat_sn;
 140         u32 stat_sn;
 141         u16 physical_q0;
 142         u16 physical_q1;
 143         u8 abortive_dsconnect;
 144 };
 145
 146 static int
 147 qed_iscsi_async_event(struct qed_hwfn *p_hwfn,
 148                       u8 fw_event_code,
 149                       u16 echo, union event_ring_data *data, u8 fw_return_code)
 150 {
 151         if (p_hwfn->p_iscsi_info->event_cb) {
 152                 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
 153
 154                 return p_iscsi->event_cb(p_iscsi->event_context,
 155                                          fw_event_code, data);
 156         } else {
 157                 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
 158                 return -EINVAL;
 159         }
 160 }
 161
 162 static int
 163 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
 164                         enum spq_mode comp_mode,
 165                         struct qed_spq_comp_cb *p_comp_addr,
 166                         void *event_context, iscsi_event_cb_t async_event_cb)
 167 {
 168         struct iscsi_init_ramrod_params *p_ramrod = NULL;
 169         struct scsi_init_func_queues *p_queue = NULL;
 170         struct qed_iscsi_pf_params *p_params = NULL;
 171         struct iscsi_spe_func_init *p_init = NULL;
 172         struct qed_spq_entry *p_ent = NULL;
 173         struct qed_sp_init_data init_data;
 174         int rc = 0;
 175         u32 dval;
 176         u16 val;
 177         u8 i;
 178
 179         /* Get SPQ entry */
 180         memset(&init_data, 0, sizeof(init_data));
 181         init_data.cid = qed_spq_get_cid(p_hwfn);
 182         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 183         init_data.comp_mode = comp_mode;
 184         init_data.p_comp_data = p_comp_addr;
 185
 186         rc = qed_sp_init_request(p_hwfn, &p_ent,
 187                                  ISCSI_RAMROD_CMD_ID_INIT_FUNC,
 188                                  PROTOCOLID_ISCSI, &init_data);
 189         if (rc)
 190                 return rc;
 191
 192         p_ramrod = &p_ent->ramrod.iscsi_init;
 193         p_init = &p_ramrod->iscsi_init_spe;
 194         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 195         p_queue = &p_init->q_params;
 196
 197         /* Sanity */
 198         if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
 199                 DP_ERR(p_hwfn,
 200                        "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
 201                        p_params->num_queues,
 202                        p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
 203                 qed_sp_destroy_request(p_hwfn, p_ent);
 204                 return -EINVAL;
 205         }
 206
 207         SET_FIELD(p_init->hdr.flags,
 208                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
 209         p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
 210
 211         val = p_params->half_way_close_timeout;
 212         p_init->half_way_close_timeout = cpu_to_le16(val);
 213         p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
 214         p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
 215         p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
 216         p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] +
 217                                   p_params->ll2_ooo_queue_id;
 218
 219         p_init->func_params.log_page_size = p_params->log_page_size;
 220         val = p_params->num_tasks;
 221         p_init->func_params.num_tasks = cpu_to_le16(val);
 222         p_init->debug_mode.flags = p_params->debug_mode;
 223
 224         DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
 225                        p_params->glbl_q_params_addr);
 226
 227         val = p_params->cq_num_entries;
 228         p_queue->cq_num_entries = cpu_to_le16(val);
 229         val = p_params->cmdq_num_entries;
 230         p_queue->cmdq_num_entries = cpu_to_le16(val);
 231         p_queue->num_queues = p_params->num_queues;
 232         dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
 233         p_queue->queue_relative_offset = (u8)dval;
 234         p_queue->cq_sb_pi = p_params->gl_rq_pi;
 235         p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
 236
 237         for (i = 0; i < p_params->num_queues; i++) {
 238                 val = qed_get_igu_sb_id(p_hwfn, i);
 239                 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
 240         }
 241
 242         p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
 243
 244         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
 245                        p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
 246         p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
 247             p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
 248         val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
 249         p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 250         val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
 251         p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 252
 253         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
 254                        p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
 255         p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
 256             p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
 257         val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
 258         p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 259         val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
 260         p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 261         val = p_params->rq_buffer_size;
 262         p_queue->rq_buffer_size = cpu_to_le16(val);
 263         if (p_params->is_target) {
 264                 SET_FIELD(p_queue->q_validity,
 265                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 266                 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
 267                         SET_FIELD(p_queue->q_validity,
 268                                   SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
 269                 SET_FIELD(p_queue->q_validity,
 270                           SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
 271         } else {
 272                 SET_FIELD(p_queue->q_validity,
 273                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 274         }
 275         p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
 276         val = p_params->tx_sws_timer;
 277         p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
 278         p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
 279
 280         p_hwfn->p_iscsi_info->event_context = event_context;
 281         p_hwfn->p_iscsi_info->event_cb = async_event_cb;
 282
 283         qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
 284                                   qed_iscsi_async_event);
 285
 286         return qed_spq_post(p_hwfn, p_ent, NULL);
 287 }
 288
 289 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
 290                                      struct qed_iscsi_conn *p_conn,
 291                                      enum spq_mode comp_mode,
 292                                      struct qed_spq_comp_cb *p_comp_addr)
 293 {
 294         struct iscsi_spe_conn_offload *p_ramrod = NULL;
 295         struct tcp_offload_params_opt2 *p_tcp2 = NULL;
 296         struct tcp_offload_params *p_tcp = NULL;
 297         struct qed_spq_entry *p_ent = NULL;
 298         struct qed_sp_init_data init_data;
 299         dma_addr_t r2tq_pbl_addr;
 300         dma_addr_t xhq_pbl_addr;
 301         dma_addr_t uhq_pbl_addr;
 302         u16 physical_q;
 303         int rc = 0;
 304         u32 dval;
 305         u16 wval;
 306         u16 *p;
 307         u8 i;
 308
 309         /* Get SPQ entry */
 310         memset(&init_data, 0, sizeof(init_data));
 311         init_data.cid = p_conn->icid;
 312         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 313         init_data.comp_mode = comp_mode;
 314         init_data.p_comp_data = p_comp_addr;
 315
 316         rc = qed_sp_init_request(p_hwfn, &p_ent,
 317                                  ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
 318                                  PROTOCOLID_ISCSI, &init_data);
 319         if (rc)
 320                 return rc;
 321
 322         p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
 323
 324         /* Transmission PQ is the first of the PF */
 325         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
 326         p_conn->physical_q0 = cpu_to_le16(physical_q);
 327         p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
 328
 329         /* iSCSI Pure-ACK PQ */
 330         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
 331         p_conn->physical_q1 = cpu_to_le16(physical_q);
 332         p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
 333
 334         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
 335         SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
 336                   p_conn->layer_code);
 337
 338         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 339         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 340
 341         DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
 342
 343         r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
 344         DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
 345
 346         xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
 347         DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
 348
 349         uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
 350         DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
 351
 352         p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
 353         p_ramrod->iscsi.flags = p_conn->offl_flags;
 354         p_ramrod->iscsi.default_cq = p_conn->default_cq;
 355         p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
 356
 357         if (!GET_FIELD(p_ramrod->iscsi.flags,
 358                        ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
 359                 p_tcp = &p_ramrod->tcp;
 360
 361                 p = (u16 *)p_conn->local_mac;
 362                 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
 363                 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
 364                 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
 365
 366                 p = (u16 *)p_conn->remote_mac;
 367                 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
 368                 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
 369                 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
 370
 371                 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
 372
 373                 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
 374                 p_tcp->ip_version = p_conn->ip_version;
 375                 for (i = 0; i < 4; i++) {
 376                         dval = p_conn->remote_ip[i];
 377                         p_tcp->remote_ip[i] = cpu_to_le32(dval);
 378                         dval = p_conn->local_ip[i];
 379                         p_tcp->local_ip[i] = cpu_to_le32(dval);
 380                 }
 381                 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
 382                 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
 383
 384                 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
 385                 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
 386                 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
 387                 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
 388                 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
 389                 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
 390                 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
 391                 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
 392                 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
 393                 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
 394                 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
 395                 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
 396                 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
 397                 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
 398                 dval = p_conn->ka_timeout_delta;
 399                 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
 400                 dval = p_conn->rt_timeout_delta;
 401                 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
 402                 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
 403                 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
 404                 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
 405                 p_tcp->rt_cnt = p_conn->rt_cnt;
 406                 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
 407                 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 408                 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
 409                 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 410                 dval = p_conn->initial_rcv_wnd;
 411                 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
 412                 p_tcp->ttl = p_conn->ttl;
 413                 p_tcp->tos_or_tc = p_conn->tos_or_tc;
 414                 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
 415                 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
 416                 p_tcp->mss = cpu_to_le16(p_conn->mss);
 417                 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
 418                 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 419                 wval = p_conn->da_timeout_value;
 420                 p_tcp->da_timeout_value = cpu_to_le16(wval);
 421                 p_tcp->ack_frequency = p_conn->ack_frequency;
 422                 p_tcp->connect_mode = p_conn->connect_mode;
 423         } else {
 424                 p_tcp2 =
 425                     &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
 426
 427                 p = (u16 *)p_conn->local_mac;
 428                 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
 429                 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
 430                 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
 431
 432                 p = (u16 *)p_conn->remote_mac;
 433                 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
 434                 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
 435                 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
 436
 437                 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
 438                 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
 439
 440                 p_tcp2->ip_version = p_conn->ip_version;
 441                 for (i = 0; i < 4; i++) {
 442                         dval = p_conn->remote_ip[i];
 443                         p_tcp2->remote_ip[i] = cpu_to_le32(dval);
 444                         dval = p_conn->local_ip[i];
 445                         p_tcp2->local_ip[i] = cpu_to_le32(dval);
 446                 }
 447
 448                 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
 449                 p_tcp2->ttl = p_conn->ttl;
 450                 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
 451                 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
 452                 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
 453                 p_tcp2->mss = cpu_to_le16(p_conn->mss);
 454                 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 455                 p_tcp2->connect_mode = p_conn->connect_mode;
 456                 wval = p_conn->syn_ip_payload_length;
 457                 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
 458                 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
 459                 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
 460                 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
 461                 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
 462                 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 463                 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 464                 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
 465         }
 466
 467         return qed_spq_post(p_hwfn, p_ent, NULL);
 468 }
 469
 470 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
 471                                     struct qed_iscsi_conn *p_conn,
 472                                     enum spq_mode comp_mode,
 473                                     struct qed_spq_comp_cb *p_comp_addr)
 474 {
 475         struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
 476         struct qed_spq_entry *p_ent = NULL;
 477         struct qed_sp_init_data init_data;
 478         int rc = -EINVAL;
 479         u32 dval;
 480
 481         /* Get SPQ entry */
 482         memset(&init_data, 0, sizeof(init_data));
 483         init_data.cid = p_conn->icid;
 484         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 485         init_data.comp_mode = comp_mode;
 486         init_data.p_comp_data = p_comp_addr;
 487
 488         rc = qed_sp_init_request(p_hwfn, &p_ent,
 489                                  ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
 490                                  PROTOCOLID_ISCSI, &init_data);
 491         if (rc)
 492                 return rc;
 493
 494         p_ramrod = &p_ent->ramrod.iscsi_conn_update;
 495         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
 496         SET_FIELD(p_ramrod->hdr.flags,
 497                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 498
 499         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 500         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 501         p_ramrod->flags = p_conn->update_flag;
 502         p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
 503         dval = p_conn->max_recv_pdu_length;
 504         p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
 505         dval = p_conn->max_send_pdu_length;
 506         p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
 507         dval = p_conn->first_seq_length;
 508         p_ramrod->first_seq_length = cpu_to_le32(dval);
 509         p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
 510
 511         return qed_spq_post(p_hwfn, p_ent, NULL);
 512 }
 513
 514 static int
 515 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
 516                         struct qed_iscsi_conn *p_conn,
 517                         enum spq_mode comp_mode,
 518                         struct qed_spq_comp_cb *p_comp_addr)
 519 {
 520         struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
 521         struct qed_spq_entry *p_ent = NULL;
 522         struct qed_sp_init_data init_data;
 523         int rc = -EINVAL;
 524         u8 ucval;
 525
 526         /* Get SPQ entry */
 527         memset(&init_data, 0, sizeof(init_data));
 528         init_data.cid = p_conn->icid;
 529         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 530         init_data.comp_mode = comp_mode;
 531         init_data.p_comp_data = p_comp_addr;
 532
 533         rc = qed_sp_init_request(p_hwfn, &p_ent,
 534                                  ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
 535                                  PROTOCOLID_ISCSI, &init_data);
 536         if (rc)
 537                 return rc;
 538
 539         p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
 540         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE;
 541         SET_FIELD(p_ramrod->hdr.flags,
 542                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 543
 544         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 545         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 546         ucval = p_conn->remote_mac[1];
 547         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
 548         ucval = p_conn->remote_mac[0];
 549         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
 550         ucval = p_conn->remote_mac[3];
 551         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
 552         ucval = p_conn->remote_mac[2];
 553         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
 554         ucval = p_conn->remote_mac[5];
 555         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
 556         ucval = p_conn->remote_mac[4];
 557         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
 558
 559         return qed_spq_post(p_hwfn, p_ent, NULL);
 560 }
 561
 562 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
 563                                        struct qed_iscsi_conn *p_conn,
 564                                        enum spq_mode comp_mode,
 565                                        struct qed_spq_comp_cb *p_comp_addr)
 566 {
 567         struct iscsi_spe_conn_termination *p_ramrod = NULL;
 568         struct qed_spq_entry *p_ent = NULL;
 569         struct qed_sp_init_data init_data;
 570         int rc = -EINVAL;
 571
 572         /* Get SPQ entry */
 573         memset(&init_data, 0, sizeof(init_data));
 574         init_data.cid = p_conn->icid;
 575         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 576         init_data.comp_mode = comp_mode;
 577         init_data.p_comp_data = p_comp_addr;
 578
 579         rc = qed_sp_init_request(p_hwfn, &p_ent,
 580                                  ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
 581                                  PROTOCOLID_ISCSI, &init_data);
 582         if (rc)
 583                 return rc;
 584
 585         p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
 586         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
 587         SET_FIELD(p_ramrod->hdr.flags,
 588                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 589
 590         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 591         p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
 592         p_ramrod->abortive = p_conn->abortive_dsconnect;
 593
 594         DMA_REGPAIR_LE(p_ramrod->query_params_addr,
 595                        p_conn->tcp_upload_params_phys_addr);
 596         DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
 597
 598         return qed_spq_post(p_hwfn, p_ent, NULL);
 599 }
 600
 601 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
 602                                       struct qed_iscsi_conn *p_conn,
 603                                       enum spq_mode comp_mode,
 604                                       struct qed_spq_comp_cb *p_comp_addr)
 605 {
 606         struct iscsi_slow_path_hdr *p_ramrod = NULL;
 607         struct qed_spq_entry *p_ent = NULL;
 608         struct qed_sp_init_data init_data;
 609         int rc = -EINVAL;
 610
 611         /* Get SPQ entry */
 612         memset(&init_data, 0, sizeof(init_data));
 613         init_data.cid = p_conn->icid;
 614         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 615         init_data.comp_mode = comp_mode;
 616         init_data.p_comp_data = p_comp_addr;
 617
 618         rc = qed_sp_init_request(p_hwfn, &p_ent,
 619                                  ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
 620                                  PROTOCOLID_ISCSI, &init_data);
 621         if (rc)
 622                 return rc;
 623
 624         p_ramrod = &p_ent->ramrod.iscsi_empty;
 625         p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
 626         SET_FIELD(p_ramrod->flags,
 627                   ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
 628
 629         return qed_spq_post(p_hwfn, p_ent, NULL);
 630 }
 631
 632 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
 633                                   enum spq_mode comp_mode,
 634                                   struct qed_spq_comp_cb *p_comp_addr)
 635 {
 636         struct iscsi_spe_func_dstry *p_ramrod = NULL;
 637         struct qed_spq_entry *p_ent = NULL;
 638         struct qed_sp_init_data init_data;
 639         int rc = 0;
 640
 641         /* Get SPQ entry */
 642         memset(&init_data, 0, sizeof(init_data));
 643         init_data.cid = qed_spq_get_cid(p_hwfn);
 644         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 645         init_data.comp_mode = comp_mode;
 646         init_data.p_comp_data = p_comp_addr;
 647
 648         rc = qed_sp_init_request(p_hwfn, &p_ent,
 649                                  ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
 650                                  PROTOCOLID_ISCSI, &init_data);
 651         if (rc)
 652                 return rc;
 653
 654         p_ramrod = &p_ent->ramrod.iscsi_destroy;
 655         p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
 656
 657         rc = qed_spq_post(p_hwfn, p_ent, NULL);
 658
 659         qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
 660         return rc;
 661 }
 662
 663 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
 664 {
 665         return (u8 __iomem *)p_hwfn->doorbells +
 666                              qed_db_addr(cid, DQ_DEMS_LEGACY);
 667 }
 668
 669 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
 670                                                     u8 bdq_id)
 671 {
 672         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 673                 return (u8 __iomem *)p_hwfn->regview +
 674                        GTT_BAR0_MAP_REG_MSDM_RAM +
 675                        MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 676                                                                   QED_BDQ),
 677                                                        bdq_id);
 678         } else {
 679                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 680                 return NULL;
 681         }
 682 }
 683
 684 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
 685                                                       u8 bdq_id)
 686 {
 687         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 688                 return (u8 __iomem *)p_hwfn->regview +
 689                        GTT_BAR0_MAP_REG_TSDM_RAM +
 690                        TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 691                                                                   QED_BDQ),
 692                                                        bdq_id);
 693         } else {
 694                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 695                 return NULL;
 696         }
 697 }
 698
 699 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
 700 {
 701         if (!p_conn->queue_cnts_virt_addr)
 702                 goto nomem;
 703         memset(p_conn->queue_cnts_virt_addr, 0,
 704                sizeof(*p_conn->queue_cnts_virt_addr));
 705
 706         if (!p_conn->tcp_upload_params_virt_addr)
 707                 goto nomem;
 708         memset(p_conn->tcp_upload_params_virt_addr, 0,
 709                sizeof(*p_conn->tcp_upload_params_virt_addr));
 710
 711         if (!p_conn->r2tq.p_virt_addr)
 712                 goto nomem;
 713         qed_chain_pbl_zero_mem(&p_conn->r2tq);
 714
 715         if (!p_conn->uhq.p_virt_addr)
 716                 goto nomem;
 717         qed_chain_pbl_zero_mem(&p_conn->uhq);
 718
 719         if (!p_conn->xhq.p_virt_addr)
 720                 goto nomem;
 721         qed_chain_pbl_zero_mem(&p_conn->xhq);
 722
 723         return 0;
 724 nomem:
 725         return -ENOMEM;
 726 }
 727
 728 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
 729                                          struct qed_iscsi_conn **p_out_conn)
 730 {
 731         u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
 732         struct scsi_terminate_extra_params *p_q_cnts = NULL;
 733         struct qed_iscsi_pf_params *p_params = NULL;
 734         struct tcp_upload_params *p_tcp = NULL;
 735         struct qed_iscsi_conn *p_conn = NULL;
 736         int rc = 0;
 737
 738         /* Try finding a free connection that can be used */
 739         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 740         if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
 741                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 742                                           struct qed_iscsi_conn, list_entry);
 743         if (p_conn) {
 744                 list_del(&p_conn->list_entry);
 745                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 746                 *p_out_conn = p_conn;
 747                 return 0;
 748         }
 749         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 750
 751         /* Need to allocate a new connection */
 752         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 753
 754         p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
 755         if (!p_conn)
 756                 return -ENOMEM;
 757
 758         p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 759                                       sizeof(*p_q_cnts),
 760                                       &p_conn->queue_cnts_phys_addr,
 761                                       GFP_KERNEL);
 762         if (!p_q_cnts)
 763                 goto nomem_queue_cnts_param;
 764         p_conn->queue_cnts_virt_addr = p_q_cnts;
 765
 766         p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 767                                    sizeof(*p_tcp),
 768                                    &p_conn->tcp_upload_params_phys_addr,
 769                                    GFP_KERNEL);
 770         if (!p_tcp)
 771                 goto nomem_upload_param;
 772         p_conn->tcp_upload_params_virt_addr = p_tcp;
 773
 774         r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
 775                             QED_CHAIN_PAGE_SIZE / 0x80;
 776         rc = qed_chain_alloc(p_hwfn->cdev,
 777                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 778                              QED_CHAIN_MODE_PBL,
 779                              QED_CHAIN_CNT_TYPE_U16,
 780                              r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
 781         if (rc)
 782                 goto nomem_r2tq;
 783
 784         uhq_num_elements = p_params->num_uhq_pages_in_ring *
 785                            QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
 786         rc = qed_chain_alloc(p_hwfn->cdev,
 787                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 788                              QED_CHAIN_MODE_PBL,
 789                              QED_CHAIN_CNT_TYPE_U16,
 790                              uhq_num_elements,
 791                              sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
 792         if (rc)
 793                 goto nomem_uhq;
 794
 795         xhq_num_elements = uhq_num_elements;
 796         rc = qed_chain_alloc(p_hwfn->cdev,
 797                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 798                              QED_CHAIN_MODE_PBL,
 799                              QED_CHAIN_CNT_TYPE_U16,
 800                              xhq_num_elements,
 801                              sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
 802         if (rc)
 803                 goto nomem;
 804
 805         p_conn->free_on_delete = true;
 806         *p_out_conn = p_conn;
 807         return 0;
 808
 809 nomem:
 810         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 811 nomem_uhq:
 812         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 813 nomem_r2tq:
 814         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 815                           sizeof(struct tcp_upload_params),
 816                           p_conn->tcp_upload_params_virt_addr,
 817                           p_conn->tcp_upload_params_phys_addr);
 818 nomem_upload_param:
 819         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 820                           sizeof(struct scsi_terminate_extra_params),
 821                           p_conn->queue_cnts_virt_addr,
 822                           p_conn->queue_cnts_phys_addr);
 823 nomem_queue_cnts_param:
 824         kfree(p_conn);
 825
 826         return -ENOMEM;
 827 }
 828
 829 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
 830                                         struct qed_iscsi_conn *p_in_conn,
 831                                         struct qed_iscsi_conn **p_out_conn)
 832 {
 833         struct qed_iscsi_conn *p_conn = NULL;
 834         int rc = 0;
 835         u32 icid;
 836
 837         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 838         rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
 839         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 840         if (rc)
 841                 return rc;
 842
 843         /* Use input connection or allocate a new one */
 844         if (p_in_conn)
 845                 p_conn = p_in_conn;
 846         else
 847                 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
 848
 849         if (!rc)
 850                 rc = qed_iscsi_setup_connection(p_conn);
 851
 852         if (rc) {
 853                 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 854                 qed_cxt_release_cid(p_hwfn, icid);
 855                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 856                 return rc;
 857         }
 858
 859         p_conn->icid = icid;
 860         p_conn->conn_id = (u16)icid;
 861         p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
 862
 863         *p_out_conn = p_conn;
 864
 865         return rc;
 866 }
 867
 868 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
 869                                          struct qed_iscsi_conn *p_conn)
 870 {
 871         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 872         list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
 873         qed_cxt_release_cid(p_hwfn, p_conn->icid);
 874         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 875 }
 876
 877 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
 878                                       struct qed_iscsi_conn *p_conn)
 879 {
 880         qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
 881         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 882         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 883         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 884                           sizeof(struct tcp_upload_params),
 885                           p_conn->tcp_upload_params_virt_addr,
 886                           p_conn->tcp_upload_params_phys_addr);
 887         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 888                           sizeof(struct scsi_terminate_extra_params),
 889                           p_conn->queue_cnts_virt_addr,
 890                           p_conn->queue_cnts_phys_addr);
 891         kfree(p_conn);
 892 }
 893
 894 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
 895 {
 896         struct qed_iscsi_info *p_iscsi_info;
 897
 898         p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
 899         if (!p_iscsi_info)
 900                 return -ENOMEM;
 901
 902         INIT_LIST_HEAD(&p_iscsi_info->free_list);
 903
 904         p_hwfn->p_iscsi_info = p_iscsi_info;
 905         return 0;
 906 }
 907
 908 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
 909 {
 910         spin_lock_init(&p_hwfn->p_iscsi_info->lock);
 911 }
 912
 913 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
 914 {
 915         struct qed_iscsi_conn *p_conn = NULL;
 916
 917         if (!p_hwfn->p_iscsi_info)
 918                 return;
 919
 920         while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
 921                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 922                                           struct qed_iscsi_conn, list_entry);
 923                 if (p_conn) {
 924                         list_del(&p_conn->list_entry);
 925                         qed_iscsi_free_connection(p_hwfn, p_conn);
 926                 }
 927         }
 928
 929         kfree(p_hwfn->p_iscsi_info);
 930         p_hwfn->p_iscsi_info = NULL;
 931 }
 932
 933 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
 934                                   struct qed_ptt *p_ptt,
 935                                   struct qed_iscsi_stats *p_stats)
 936 {
 937         struct tstorm_iscsi_stats_drv tstats;
 938         u32 tstats_addr;
 939
 940         memset(&tstats, 0, sizeof(tstats));
 941         tstats_addr = BAR0_MAP_REG_TSDM_RAM +
 942                       TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 943         qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
 944
 945         p_stats->iscsi_rx_bytes_cnt =
 946             HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
 947         p_stats->iscsi_rx_packet_cnt =
 948             HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
 949         p_stats->iscsi_rx_new_ooo_isle_events_cnt =
 950             HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
 951         p_stats->iscsi_cmdq_threshold_cnt =
 952             le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
 953         p_stats->iscsi_rq_threshold_cnt =
 954             le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
 955         p_stats->iscsi_immq_threshold_cnt =
 956             le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
 957 }
 958
 959 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
 960                                   struct qed_ptt *p_ptt,
 961                                   struct qed_iscsi_stats *p_stats)
 962 {
 963         struct mstorm_iscsi_stats_drv mstats;
 964         u32 mstats_addr;
 965
 966         memset(&mstats, 0, sizeof(mstats));
 967         mstats_addr = BAR0_MAP_REG_MSDM_RAM +
 968                       MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 969         qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
 970
 971         p_stats->iscsi_rx_dropped_pdus_task_not_valid =
 972             HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
 973 }
 974
 975 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
 976                                   struct qed_ptt *p_ptt,
 977                                   struct qed_iscsi_stats *p_stats)
 978 {
 979         struct ustorm_iscsi_stats_drv ustats;
 980         u32 ustats_addr;
 981
 982         memset(&ustats, 0, sizeof(ustats));
 983         ustats_addr = BAR0_MAP_REG_USDM_RAM +
 984                       USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 985         qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
 986
 987         p_stats->iscsi_rx_data_pdu_cnt =
 988             HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
 989         p_stats->iscsi_rx_r2t_pdu_cnt =
 990             HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
 991         p_stats->iscsi_rx_total_pdu_cnt =
 992             HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
 993 }
 994
 995 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
 996                                   struct qed_ptt *p_ptt,
 997                                   struct qed_iscsi_stats *p_stats)
 998 {
 999         struct xstorm_iscsi_stats_drv xstats;
1000         u32 xstats_addr;
1001
1002         memset(&xstats, 0, sizeof(xstats));
1003         xstats_addr = BAR0_MAP_REG_XSDM_RAM +
1004                       XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1005         qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
1006
1007         p_stats->iscsi_tx_go_to_slow_start_event_cnt =
1008             HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
1009         p_stats->iscsi_tx_fast_retransmit_event_cnt =
1010             HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
1011 }
1012
1013 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
1014                                   struct qed_ptt *p_ptt,
1015                                   struct qed_iscsi_stats *p_stats)
1016 {
1017         struct ystorm_iscsi_stats_drv ystats;
1018         u32 ystats_addr;
1019
1020         memset(&ystats, 0, sizeof(ystats));
1021         ystats_addr = BAR0_MAP_REG_YSDM_RAM +
1022                       YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1023         qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
1024
1025         p_stats->iscsi_tx_data_pdu_cnt =
1026             HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
1027         p_stats->iscsi_tx_r2t_pdu_cnt =
1028             HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
1029         p_stats->iscsi_tx_total_pdu_cnt =
1030             HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1031 }
1032
1033 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1034                                   struct qed_ptt *p_ptt,
1035                                   struct qed_iscsi_stats *p_stats)
1036 {
1037         struct pstorm_iscsi_stats_drv pstats;
1038         u32 pstats_addr;
1039
1040         memset(&pstats, 0, sizeof(pstats));
1041         pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1042                       PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1043         qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1044
1045         p_stats->iscsi_tx_bytes_cnt =
1046             HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1047         p_stats->iscsi_tx_packet_cnt =
1048             HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1049 }
1050
1051 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1052                                struct qed_iscsi_stats *stats)
1053 {
1054         struct qed_ptt *p_ptt;
1055
1056         memset(stats, 0, sizeof(*stats));
1057
1058         p_ptt = qed_ptt_acquire(p_hwfn);
1059         if (!p_ptt) {
1060                 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1061                 return -EAGAIN;
1062         }
1063
1064         _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1065         _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1066         _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1067
1068         _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1069         _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1070         _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1071
1072         qed_ptt_release(p_hwfn, p_ptt);
1073
1074         return 0;
1075 }
1076
1077 struct qed_hash_iscsi_con {
1078         struct hlist_node node;
1079         struct qed_iscsi_conn *con;
1080 };
1081
1082 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1083                                    struct qed_dev_iscsi_info *info)
1084 {
1085         struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1086
1087         int rc;
1088
1089         memset(info, 0, sizeof(*info));
1090         rc = qed_fill_dev_info(cdev, &info->common);
1091
1092         info->primary_dbq_rq_addr =
1093             qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1094         info->secondary_bdq_rq_addr =
1095             qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1096
1097         info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1098
1099         return rc;
1100 }
1101
1102 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1103                                    struct qed_iscsi_cb_ops *ops, void *cookie)
1104 {
1105         cdev->protocol_ops.iscsi = ops;
1106         cdev->ops_cookie = cookie;
1107 }
1108
1109 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1110                                                      u32 handle)
1111 {
1112         struct qed_hash_iscsi_con *hash_con = NULL;
1113
1114         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1115                 return NULL;
1116
1117         hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1118                 if (hash_con->con->icid == handle)
1119                         break;
1120         }
1121
1122         if (!hash_con || (hash_con->con->icid != handle))
1123                 return NULL;
1124
1125         return hash_con;
1126 }
1127
1128 static int qed_iscsi_stop(struct qed_dev *cdev)
1129 {
1130         int rc;
1131
1132         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1133                 DP_NOTICE(cdev, "iscsi already stopped\n");
1134                 return 0;
1135         }
1136
1137         if (!hash_empty(cdev->connections)) {
1138                 DP_NOTICE(cdev,
1139                           "Can't stop iscsi - not all connections were returned\n");
1140                 return -EINVAL;
1141         }
1142
1143         /* Stop the iscsi */
1144         rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1145                                     QED_SPQ_MODE_EBLOCK, NULL);
1146         cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1147
1148         return rc;
1149 }
1150
1151 static int qed_iscsi_start(struct qed_dev *cdev,
1152                            struct qed_iscsi_tid *tasks,
1153                            void *event_context,
1154                            iscsi_event_cb_t async_event_cb)
1155 {
1156         int rc;
1157         struct qed_tid_mem *tid_info;
1158
1159         if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1160                 DP_NOTICE(cdev, "iscsi already started;\n");
1161                 return 0;
1162         }
1163
1164         rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1165                                      QED_SPQ_MODE_EBLOCK, NULL, event_context,
1166                                      async_event_cb);
1167         if (rc) {
1168                 DP_NOTICE(cdev, "Failed to start iscsi\n");
1169                 return rc;
1170         }
1171
1172         cdev->flags |= QED_FLAG_STORAGE_STARTED;
1173         hash_init(cdev->connections);
1174
1175         if (!tasks)
1176                 return 0;
1177
1178         tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1179
1180         if (!tid_info) {
1181                 qed_iscsi_stop(cdev);
1182                 return -ENOMEM;
1183         }
1184
1185         rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1186                                       tid_info);
1187         if (rc) {
1188                 DP_NOTICE(cdev, "Failed to gather task information\n");
1189                 qed_iscsi_stop(cdev);
1190                 kfree(tid_info);
1191                 return rc;
1192         }
1193
1194         /* Fill task information */
1195         tasks->size = tid_info->tid_size;
1196         tasks->num_tids_per_block = tid_info->num_tids_per_block;
1197         memcpy(tasks->blocks, tid_info->blocks,
1198                MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1199
1200         kfree(tid_info);
1201
1202         return 0;
1203 }
1204
1205 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1206                                   u32 *handle,
1207                                   u32 *fw_cid, void __iomem **p_doorbell)
1208 {
1209         struct qed_hash_iscsi_con *hash_con;
1210         int rc;
1211
1212         /* Allocate a hashed connection */
1213         hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1214         if (!hash_con)
1215                 return -ENOMEM;
1216
1217         /* Acquire the connection */
1218         rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1219                                           &hash_con->con);
1220         if (rc) {
1221                 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1222                 kfree(hash_con);
1223                 return rc;
1224         }
1225
1226         /* Added the connection to hash table */
1227         *handle = hash_con->con->icid;
1228         *fw_cid = hash_con->con->fw_cid;
1229         hash_add(cdev->connections, &hash_con->node, *handle);
1230
1231         if (p_doorbell)
1232                 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1233                                                     *handle);
1234
1235         return 0;
1236 }
1237
1238 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1239 {
1240         struct qed_hash_iscsi_con *hash_con;
1241
1242         hash_con = qed_iscsi_get_hash(cdev, handle);
1243         if (!hash_con) {
1244                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1245                           handle);
1246                 return -EINVAL;
1247         }
1248
1249         hlist_del(&hash_con->node);
1250         qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1251         kfree(hash_con);
1252
1253         return 0;
1254 }
1255
1256 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1257                                   u32 handle,
1258                                   struct qed_iscsi_params_offload *conn_info)
1259 {
1260         struct qed_hash_iscsi_con *hash_con;
1261         struct qed_iscsi_conn *con;
1262
1263         hash_con = qed_iscsi_get_hash(cdev, handle);
1264         if (!hash_con) {
1265                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1266                           handle);
1267                 return -EINVAL;
1268         }
1269
1270         /* Update the connection with information from the params */
1271         con = hash_con->con;
1272
1273         ether_addr_copy(con->local_mac, conn_info->src.mac);
1274         ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1275         memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1276         memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1277         con->local_port = conn_info->src.port;
1278         con->remote_port = conn_info->dst.port;
1279
1280         con->layer_code = conn_info->layer_code;
1281         con->sq_pbl_addr = conn_info->sq_pbl_addr;
1282         con->initial_ack = conn_info->initial_ack;
1283         con->vlan_id = conn_info->vlan_id;
1284         con->tcp_flags = conn_info->tcp_flags;
1285         con->ip_version = conn_info->ip_version;
1286         con->default_cq = conn_info->default_cq;
1287         con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1288         con->dup_ack_theshold = conn_info->dup_ack_theshold;
1289         con->rcv_next = conn_info->rcv_next;
1290         con->snd_una = conn_info->snd_una;
1291         con->snd_next = conn_info->snd_next;
1292         con->snd_max = conn_info->snd_max;
1293         con->snd_wnd = conn_info->snd_wnd;
1294         con->rcv_wnd = conn_info->rcv_wnd;
1295         con->snd_wl1 = conn_info->snd_wl1;
1296         con->cwnd = conn_info->cwnd;
1297         con->ss_thresh = conn_info->ss_thresh;
1298         con->srtt = conn_info->srtt;
1299         con->rtt_var = conn_info->rtt_var;
1300         con->ts_recent = conn_info->ts_recent;
1301         con->ts_recent_age = conn_info->ts_recent_age;
1302         con->total_rt = conn_info->total_rt;
1303         con->ka_timeout_delta = conn_info->ka_timeout_delta;
1304         con->rt_timeout_delta = conn_info->rt_timeout_delta;
1305         con->dup_ack_cnt = conn_info->dup_ack_cnt;
1306         con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1307         con->ka_probe_cnt = conn_info->ka_probe_cnt;
1308         con->rt_cnt = conn_info->rt_cnt;
1309         con->flow_label = conn_info->flow_label;
1310         con->ka_timeout = conn_info->ka_timeout;
1311         con->ka_interval = conn_info->ka_interval;
1312         con->max_rt_time = conn_info->max_rt_time;
1313         con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1314         con->ttl = conn_info->ttl;
1315         con->tos_or_tc = conn_info->tos_or_tc;
1316         con->remote_port = conn_info->remote_port;
1317         con->local_port = conn_info->local_port;
1318         con->mss = conn_info->mss;
1319         con->snd_wnd_scale = conn_info->snd_wnd_scale;
1320         con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1321         con->da_timeout_value = conn_info->da_timeout_value;
1322         con->ack_frequency = conn_info->ack_frequency;
1323
1324         /* Set default values on other connection fields */
1325         con->offl_flags = 0x1;
1326
1327         return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1328                                          QED_SPQ_MODE_EBLOCK, NULL);
1329 }
1330
1331 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1332                                  u32 handle,
1333                                  struct qed_iscsi_params_update *conn_info)
1334 {
1335         struct qed_hash_iscsi_con *hash_con;
1336         struct qed_iscsi_conn *con;
1337
1338         hash_con = qed_iscsi_get_hash(cdev, handle);
1339         if (!hash_con) {
1340                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1341                           handle);
1342                 return -EINVAL;
1343         }
1344
1345         /* Update the connection with information from the params */
1346         con = hash_con->con;
1347         con->update_flag = conn_info->update_flag;
1348         con->max_seq_size = conn_info->max_seq_size;
1349         con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1350         con->max_send_pdu_length = conn_info->max_send_pdu_length;
1351         con->first_seq_length = conn_info->first_seq_length;
1352         con->exp_stat_sn = conn_info->exp_stat_sn;
1353
1354         return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1355                                         QED_SPQ_MODE_EBLOCK, NULL);
1356 }
1357
1358 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1359 {
1360         struct qed_hash_iscsi_con *hash_con;
1361
1362         hash_con = qed_iscsi_get_hash(cdev, handle);
1363         if (!hash_con) {
1364                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1365                           handle);
1366                 return -EINVAL;
1367         }
1368
1369         return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1370                                           hash_con->con,
1371                                           QED_SPQ_MODE_EBLOCK, NULL);
1372 }
1373
1374 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1375                                   u32 handle, u8 abrt_conn)
1376 {
1377         struct qed_hash_iscsi_con *hash_con;
1378
1379         hash_con = qed_iscsi_get_hash(cdev, handle);
1380         if (!hash_con) {
1381                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1382                           handle);
1383                 return -EINVAL;
1384         }
1385
1386         hash_con->con->abortive_dsconnect = abrt_conn;
1387
1388         return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1389                                            hash_con->con,
1390                                            QED_SPQ_MODE_EBLOCK, NULL);
1391 }
1392
1393 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1394 {
1395         return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1396 }
1397
1398 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1399                                 u32 handle, const u8 *mac)
1400 {
1401         struct qed_hash_iscsi_con *hash_con;
1402
1403         hash_con = qed_iscsi_get_hash(cdev, handle);
1404         if (!hash_con) {
1405                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1406                           handle);
1407                 return -EINVAL;
1408         }
1409
1410         return qed_sp_iscsi_mac_update(QED_LEADING_HWFN(cdev),
1411                                        hash_con->con,
1412                                        QED_SPQ_MODE_EBLOCK, NULL);
1413 }
1414
1415 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1416                                   struct qed_mcp_iscsi_stats *stats)
1417 {
1418         struct qed_iscsi_stats proto_stats;
1419
1420         /* Retrieve FW statistics */
1421         memset(&proto_stats, 0, sizeof(proto_stats));
1422         if (qed_iscsi_stats(cdev, &proto_stats)) {
1423                 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1424                            "Failed to collect ISCSI statistics\n");
1425                 return;
1426         }
1427
1428         /* Translate FW statistics into struct */
1429         stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1430         stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1431         stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1432         stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1433 }
1434
1435 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1436         .common = &qed_common_ops_pass,
1437         .ll2 = &qed_ll2_ops_pass,
1438         .fill_dev_info = &qed_fill_iscsi_dev_info,
1439         .register_ops = &qed_register_iscsi_ops,
1440         .start = &qed_iscsi_start,
1441         .stop = &qed_iscsi_stop,
1442         .acquire_conn = &qed_iscsi_acquire_conn,
1443         .release_conn = &qed_iscsi_release_conn,
1444         .offload_conn = &qed_iscsi_offload_conn,
1445         .update_conn = &qed_iscsi_update_conn,
1446         .destroy_conn = &qed_iscsi_destroy_conn,
1447         .clear_sq = &qed_iscsi_clear_conn_sq,
1448         .get_stats = &qed_iscsi_stats,
1449         .change_mac = &qed_iscsi_change_mac,
1450 };
1451
1452 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1453 {
1454         return &qed_iscsi_ops_pass;
1455 }
1456 EXPORT_SYMBOL(qed_get_iscsi_ops);
1457
1458 void qed_put_iscsi_ops(void)
1459 {
1460 }
1461 EXPORT_SYMBOL(qed_put_iscsi_ops);