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