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         val = p_params->half_way_close_timeout;
 208         p_init->half_way_close_timeout = cpu_to_le16(val);
 209         p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
 210         p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
 211         p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
 212         p_init->ll2_rx_queue_id =
 213             p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] +
 214             p_params->ll2_ooo_queue_id;
 215
 216         p_init->func_params.log_page_size = p_params->log_page_size;
 217         val = p_params->num_tasks;
 218         p_init->func_params.num_tasks = cpu_to_le16(val);
 219         p_init->debug_mode.flags = p_params->debug_mode;
 220
 221         DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
 222                        p_params->glbl_q_params_addr);
 223
 224         val = p_params->cq_num_entries;
 225         p_queue->cq_num_entries = cpu_to_le16(val);
 226         val = p_params->cmdq_num_entries;
 227         p_queue->cmdq_num_entries = cpu_to_le16(val);
 228         p_queue->num_queues = p_params->num_queues;
 229         dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
 230         p_queue->queue_relative_offset = (u8)dval;
 231         p_queue->cq_sb_pi = p_params->gl_rq_pi;
 232         p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
 233
 234         for (i = 0; i < p_params->num_queues; i++) {
 235                 val = qed_get_igu_sb_id(p_hwfn, i);
 236                 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
 237         }
 238
 239         p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
 240
 241         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
 242                        p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
 243         p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
 244             p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
 245         val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
 246         p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 247         val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
 248         p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
 249
 250         DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
 251                        p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
 252         p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
 253             p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
 254         val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
 255         p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 256         val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
 257         p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
 258         val = p_params->rq_buffer_size;
 259         p_queue->rq_buffer_size = cpu_to_le16(val);
 260         if (p_params->is_target) {
 261                 SET_FIELD(p_queue->q_validity,
 262                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 263                 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
 264                         SET_FIELD(p_queue->q_validity,
 265                                   SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
 266                 SET_FIELD(p_queue->q_validity,
 267                           SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
 268         } else {
 269                 SET_FIELD(p_queue->q_validity,
 270                           SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
 271         }
 272         p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
 273         val = p_params->tx_sws_timer;
 274         p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
 275         p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
 276
 277         p_hwfn->p_iscsi_info->event_context = event_context;
 278         p_hwfn->p_iscsi_info->event_cb = async_event_cb;
 279
 280         qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
 281                                   qed_iscsi_async_event);
 282
 283         return qed_spq_post(p_hwfn, p_ent, NULL);
 284 }
 285
 286 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
 287                                      struct qed_iscsi_conn *p_conn,
 288                                      enum spq_mode comp_mode,
 289                                      struct qed_spq_comp_cb *p_comp_addr)
 290 {
 291         struct iscsi_spe_conn_offload *p_ramrod = NULL;
 292         struct tcp_offload_params_opt2 *p_tcp2 = NULL;
 293         struct tcp_offload_params *p_tcp = NULL;
 294         struct qed_spq_entry *p_ent = NULL;
 295         struct qed_sp_init_data init_data;
 296         dma_addr_t r2tq_pbl_addr;
 297         dma_addr_t xhq_pbl_addr;
 298         dma_addr_t uhq_pbl_addr;
 299         u16 physical_q;
 300         int rc = 0;
 301         u32 dval;
 302         u16 wval;
 303         u16 *p;
 304         u8 i;
 305
 306         /* Get SPQ entry */
 307         memset(&init_data, 0, sizeof(init_data));
 308         init_data.cid = p_conn->icid;
 309         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 310         init_data.comp_mode = comp_mode;
 311         init_data.p_comp_data = p_comp_addr;
 312
 313         rc = qed_sp_init_request(p_hwfn, &p_ent,
 314                                  ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
 315                                  PROTOCOLID_ISCSI, &init_data);
 316         if (rc)
 317                 return rc;
 318
 319         p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
 320
 321         /* Transmission PQ is the first of the PF */
 322         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
 323         p_conn->physical_q0 = cpu_to_le16(physical_q);
 324         p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
 325
 326         /* iSCSI Pure-ACK PQ */
 327         physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
 328         p_conn->physical_q1 = cpu_to_le16(physical_q);
 329         p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
 330
 331         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 332
 333         DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
 334
 335         r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
 336         DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
 337
 338         xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
 339         DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
 340
 341         uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
 342         DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
 343
 344         p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
 345         p_ramrod->iscsi.flags = p_conn->offl_flags;
 346         p_ramrod->iscsi.default_cq = p_conn->default_cq;
 347         p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
 348
 349         if (!GET_FIELD(p_ramrod->iscsi.flags,
 350                        ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
 351                 p_tcp = &p_ramrod->tcp;
 352
 353                 p = (u16 *)p_conn->local_mac;
 354                 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
 355                 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
 356                 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
 357
 358                 p = (u16 *)p_conn->remote_mac;
 359                 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
 360                 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
 361                 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
 362
 363                 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
 364
 365                 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
 366                 p_tcp->ip_version = p_conn->ip_version;
 367                 for (i = 0; i < 4; i++) {
 368                         dval = p_conn->remote_ip[i];
 369                         p_tcp->remote_ip[i] = cpu_to_le32(dval);
 370                         dval = p_conn->local_ip[i];
 371                         p_tcp->local_ip[i] = cpu_to_le32(dval);
 372                 }
 373                 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
 374                 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
 375
 376                 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
 377                 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
 378                 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
 379                 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
 380                 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
 381                 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
 382                 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
 383                 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
 384                 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
 385                 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
 386                 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
 387                 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
 388                 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
 389                 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
 390                 dval = p_conn->ka_timeout_delta;
 391                 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
 392                 dval = p_conn->rt_timeout_delta;
 393                 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
 394                 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
 395                 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
 396                 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
 397                 p_tcp->rt_cnt = p_conn->rt_cnt;
 398                 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
 399                 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 400                 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
 401                 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 402                 dval = p_conn->initial_rcv_wnd;
 403                 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
 404                 p_tcp->ttl = p_conn->ttl;
 405                 p_tcp->tos_or_tc = p_conn->tos_or_tc;
 406                 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
 407                 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
 408                 p_tcp->mss = cpu_to_le16(p_conn->mss);
 409                 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
 410                 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 411                 wval = p_conn->da_timeout_value;
 412                 p_tcp->da_timeout_value = cpu_to_le16(wval);
 413                 p_tcp->ack_frequency = p_conn->ack_frequency;
 414                 p_tcp->connect_mode = p_conn->connect_mode;
 415         } else {
 416                 p_tcp2 =
 417                     &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
 418
 419                 p = (u16 *)p_conn->local_mac;
 420                 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
 421                 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
 422                 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
 423
 424                 p = (u16 *)p_conn->remote_mac;
 425                 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
 426                 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
 427                 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
 428
 429                 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
 430                 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
 431
 432                 p_tcp2->ip_version = p_conn->ip_version;
 433                 for (i = 0; i < 4; i++) {
 434                         dval = p_conn->remote_ip[i];
 435                         p_tcp2->remote_ip[i] = cpu_to_le32(dval);
 436                         dval = p_conn->local_ip[i];
 437                         p_tcp2->local_ip[i] = cpu_to_le32(dval);
 438                 }
 439
 440                 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
 441                 p_tcp2->ttl = p_conn->ttl;
 442                 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
 443                 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
 444                 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
 445                 p_tcp2->mss = cpu_to_le16(p_conn->mss);
 446                 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
 447                 p_tcp2->connect_mode = p_conn->connect_mode;
 448                 wval = p_conn->syn_ip_payload_length;
 449                 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
 450                 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
 451                 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
 452                 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
 453                 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
 454                 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
 455                 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
 456                 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
 457         }
 458
 459         return qed_spq_post(p_hwfn, p_ent, NULL);
 460 }
 461
 462 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
 463                                     struct qed_iscsi_conn *p_conn,
 464                                     enum spq_mode comp_mode,
 465                                     struct qed_spq_comp_cb *p_comp_addr)
 466 {
 467         struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
 468         struct qed_spq_entry *p_ent = NULL;
 469         struct qed_sp_init_data init_data;
 470         int rc = -EINVAL;
 471         u32 dval;
 472
 473         /* Get SPQ entry */
 474         memset(&init_data, 0, sizeof(init_data));
 475         init_data.cid = p_conn->icid;
 476         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 477         init_data.comp_mode = comp_mode;
 478         init_data.p_comp_data = p_comp_addr;
 479
 480         rc = qed_sp_init_request(p_hwfn, &p_ent,
 481                                  ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
 482                                  PROTOCOLID_ISCSI, &init_data);
 483         if (rc)
 484                 return rc;
 485
 486         p_ramrod = &p_ent->ramrod.iscsi_conn_update;
 487
 488         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 489         p_ramrod->flags = p_conn->update_flag;
 490         p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
 491         dval = p_conn->max_recv_pdu_length;
 492         p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
 493         dval = p_conn->max_send_pdu_length;
 494         p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
 495         dval = p_conn->first_seq_length;
 496         p_ramrod->first_seq_length = cpu_to_le32(dval);
 497         p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
 498
 499         return qed_spq_post(p_hwfn, p_ent, NULL);
 500 }
 501
 502 static int
 503 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
 504                         struct qed_iscsi_conn *p_conn,
 505                         enum spq_mode comp_mode,
 506                         struct qed_spq_comp_cb *p_comp_addr)
 507 {
 508         struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
 509         struct qed_spq_entry *p_ent = NULL;
 510         struct qed_sp_init_data init_data;
 511         int rc = -EINVAL;
 512         u8 ucval;
 513
 514         /* Get SPQ entry */
 515         memset(&init_data, 0, sizeof(init_data));
 516         init_data.cid = p_conn->icid;
 517         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 518         init_data.comp_mode = comp_mode;
 519         init_data.p_comp_data = p_comp_addr;
 520
 521         rc = qed_sp_init_request(p_hwfn, &p_ent,
 522                                  ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
 523                                  PROTOCOLID_ISCSI, &init_data);
 524         if (rc)
 525                 return rc;
 526
 527         p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
 528
 529         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 530         ucval = p_conn->remote_mac[1];
 531         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
 532         ucval = p_conn->remote_mac[0];
 533         ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
 534         ucval = p_conn->remote_mac[3];
 535         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
 536         ucval = p_conn->remote_mac[2];
 537         ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
 538         ucval = p_conn->remote_mac[5];
 539         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
 540         ucval = p_conn->remote_mac[4];
 541         ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
 542
 543         return qed_spq_post(p_hwfn, p_ent, NULL);
 544 }
 545
 546 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
 547                                        struct qed_iscsi_conn *p_conn,
 548                                        enum spq_mode comp_mode,
 549                                        struct qed_spq_comp_cb *p_comp_addr)
 550 {
 551         struct iscsi_spe_conn_termination *p_ramrod = NULL;
 552         struct qed_spq_entry *p_ent = NULL;
 553         struct qed_sp_init_data init_data;
 554         int rc = -EINVAL;
 555
 556         /* Get SPQ entry */
 557         memset(&init_data, 0, sizeof(init_data));
 558         init_data.cid = p_conn->icid;
 559         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 560         init_data.comp_mode = comp_mode;
 561         init_data.p_comp_data = p_comp_addr;
 562
 563         rc = qed_sp_init_request(p_hwfn, &p_ent,
 564                                  ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
 565                                  PROTOCOLID_ISCSI, &init_data);
 566         if (rc)
 567                 return rc;
 568
 569         p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
 570
 571         p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
 572         p_ramrod->abortive = p_conn->abortive_dsconnect;
 573
 574         DMA_REGPAIR_LE(p_ramrod->query_params_addr,
 575                        p_conn->tcp_upload_params_phys_addr);
 576         DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
 577
 578         return qed_spq_post(p_hwfn, p_ent, NULL);
 579 }
 580
 581 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
 582                                       struct qed_iscsi_conn *p_conn,
 583                                       enum spq_mode comp_mode,
 584                                       struct qed_spq_comp_cb *p_comp_addr)
 585 {
 586         struct qed_spq_entry *p_ent = NULL;
 587         struct qed_sp_init_data init_data;
 588         int rc = -EINVAL;
 589
 590         /* Get SPQ entry */
 591         memset(&init_data, 0, sizeof(init_data));
 592         init_data.cid = p_conn->icid;
 593         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 594         init_data.comp_mode = comp_mode;
 595         init_data.p_comp_data = p_comp_addr;
 596
 597         rc = qed_sp_init_request(p_hwfn, &p_ent,
 598                                  ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
 599                                  PROTOCOLID_ISCSI, &init_data);
 600         if (rc)
 601                 return rc;
 602
 603         return qed_spq_post(p_hwfn, p_ent, NULL);
 604 }
 605
 606 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
 607                                   enum spq_mode comp_mode,
 608                                   struct qed_spq_comp_cb *p_comp_addr)
 609 {
 610         struct qed_spq_entry *p_ent = NULL;
 611         struct qed_sp_init_data init_data;
 612         int rc = 0;
 613
 614         /* Get SPQ entry */
 615         memset(&init_data, 0, sizeof(init_data));
 616         init_data.cid = qed_spq_get_cid(p_hwfn);
 617         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 618         init_data.comp_mode = comp_mode;
 619         init_data.p_comp_data = p_comp_addr;
 620
 621         rc = qed_sp_init_request(p_hwfn, &p_ent,
 622                                  ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
 623                                  PROTOCOLID_ISCSI, &init_data);
 624         if (rc)
 625                 return rc;
 626
 627         rc = qed_spq_post(p_hwfn, p_ent, NULL);
 628
 629         qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
 630         return rc;
 631 }
 632
 633 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
 634 {
 635         return (u8 __iomem *)p_hwfn->doorbells +
 636                              qed_db_addr(cid, DQ_DEMS_LEGACY);
 637 }
 638
 639 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
 640                                                     u8 bdq_id)
 641 {
 642         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 643                 return (u8 __iomem *)p_hwfn->regview +
 644                        GTT_BAR0_MAP_REG_MSDM_RAM +
 645                        MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 646                                                                   QED_BDQ),
 647                                                        bdq_id);
 648         } else {
 649                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 650                 return NULL;
 651         }
 652 }
 653
 654 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
 655                                                       u8 bdq_id)
 656 {
 657         if (RESC_NUM(p_hwfn, QED_BDQ)) {
 658                 return (u8 __iomem *)p_hwfn->regview +
 659                        GTT_BAR0_MAP_REG_TSDM_RAM +
 660                        TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
 661                                                                   QED_BDQ),
 662                                                        bdq_id);
 663         } else {
 664                 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
 665                 return NULL;
 666         }
 667 }
 668
 669 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
 670 {
 671         if (!p_conn->queue_cnts_virt_addr)
 672                 goto nomem;
 673         memset(p_conn->queue_cnts_virt_addr, 0,
 674                sizeof(*p_conn->queue_cnts_virt_addr));
 675
 676         if (!p_conn->tcp_upload_params_virt_addr)
 677                 goto nomem;
 678         memset(p_conn->tcp_upload_params_virt_addr, 0,
 679                sizeof(*p_conn->tcp_upload_params_virt_addr));
 680
 681         if (!p_conn->r2tq.p_virt_addr)
 682                 goto nomem;
 683         qed_chain_pbl_zero_mem(&p_conn->r2tq);
 684
 685         if (!p_conn->uhq.p_virt_addr)
 686                 goto nomem;
 687         qed_chain_pbl_zero_mem(&p_conn->uhq);
 688
 689         if (!p_conn->xhq.p_virt_addr)
 690                 goto nomem;
 691         qed_chain_pbl_zero_mem(&p_conn->xhq);
 692
 693         return 0;
 694 nomem:
 695         return -ENOMEM;
 696 }
 697
 698 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
 699                                          struct qed_iscsi_conn **p_out_conn)
 700 {
 701         u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
 702         struct scsi_terminate_extra_params *p_q_cnts = NULL;
 703         struct qed_iscsi_pf_params *p_params = NULL;
 704         struct tcp_upload_params *p_tcp = NULL;
 705         struct qed_iscsi_conn *p_conn = NULL;
 706         int rc = 0;
 707
 708         /* Try finding a free connection that can be used */
 709         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 710         if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
 711                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 712                                           struct qed_iscsi_conn, list_entry);
 713         if (p_conn) {
 714                 list_del(&p_conn->list_entry);
 715                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 716                 *p_out_conn = p_conn;
 717                 return 0;
 718         }
 719         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 720
 721         /* Need to allocate a new connection */
 722         p_params = &p_hwfn->pf_params.iscsi_pf_params;
 723
 724         p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
 725         if (!p_conn)
 726                 return -ENOMEM;
 727
 728         p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 729                                       sizeof(*p_q_cnts),
 730                                       &p_conn->queue_cnts_phys_addr,
 731                                       GFP_KERNEL);
 732         if (!p_q_cnts)
 733                 goto nomem_queue_cnts_param;
 734         p_conn->queue_cnts_virt_addr = p_q_cnts;
 735
 736         p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 737                                    sizeof(*p_tcp),
 738                                    &p_conn->tcp_upload_params_phys_addr,
 739                                    GFP_KERNEL);
 740         if (!p_tcp)
 741                 goto nomem_upload_param;
 742         p_conn->tcp_upload_params_virt_addr = p_tcp;
 743
 744         r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
 745                             QED_CHAIN_PAGE_SIZE / 0x80;
 746         rc = qed_chain_alloc(p_hwfn->cdev,
 747                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 748                              QED_CHAIN_MODE_PBL,
 749                              QED_CHAIN_CNT_TYPE_U16,
 750                              r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
 751         if (rc)
 752                 goto nomem_r2tq;
 753
 754         uhq_num_elements = p_params->num_uhq_pages_in_ring *
 755                            QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
 756         rc = qed_chain_alloc(p_hwfn->cdev,
 757                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 758                              QED_CHAIN_MODE_PBL,
 759                              QED_CHAIN_CNT_TYPE_U16,
 760                              uhq_num_elements,
 761                              sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
 762         if (rc)
 763                 goto nomem_uhq;
 764
 765         xhq_num_elements = uhq_num_elements;
 766         rc = qed_chain_alloc(p_hwfn->cdev,
 767                              QED_CHAIN_USE_TO_CONSUME_PRODUCE,
 768                              QED_CHAIN_MODE_PBL,
 769                              QED_CHAIN_CNT_TYPE_U16,
 770                              xhq_num_elements,
 771                              sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
 772         if (rc)
 773                 goto nomem;
 774
 775         p_conn->free_on_delete = true;
 776         *p_out_conn = p_conn;
 777         return 0;
 778
 779 nomem:
 780         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 781 nomem_uhq:
 782         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 783 nomem_r2tq:
 784         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 785                           sizeof(struct tcp_upload_params),
 786                           p_conn->tcp_upload_params_virt_addr,
 787                           p_conn->tcp_upload_params_phys_addr);
 788 nomem_upload_param:
 789         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 790                           sizeof(struct scsi_terminate_extra_params),
 791                           p_conn->queue_cnts_virt_addr,
 792                           p_conn->queue_cnts_phys_addr);
 793 nomem_queue_cnts_param:
 794         kfree(p_conn);
 795
 796         return -ENOMEM;
 797 }
 798
 799 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
 800                                         struct qed_iscsi_conn *p_in_conn,
 801                                         struct qed_iscsi_conn **p_out_conn)
 802 {
 803         struct qed_iscsi_conn *p_conn = NULL;
 804         int rc = 0;
 805         u32 icid;
 806
 807         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 808         rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
 809         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 810         if (rc)
 811                 return rc;
 812
 813         /* Use input connection or allocate a new one */
 814         if (p_in_conn)
 815                 p_conn = p_in_conn;
 816         else
 817                 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
 818
 819         if (!rc)
 820                 rc = qed_iscsi_setup_connection(p_conn);
 821
 822         if (rc) {
 823                 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 824                 qed_cxt_release_cid(p_hwfn, icid);
 825                 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 826                 return rc;
 827         }
 828
 829         p_conn->icid = icid;
 830         p_conn->conn_id = (u16)icid;
 831         p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
 832
 833         *p_out_conn = p_conn;
 834
 835         return rc;
 836 }
 837
 838 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
 839                                          struct qed_iscsi_conn *p_conn)
 840 {
 841         spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
 842         list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
 843         qed_cxt_release_cid(p_hwfn, p_conn->icid);
 844         spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 845 }
 846
 847 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
 848                                       struct qed_iscsi_conn *p_conn)
 849 {
 850         qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
 851         qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
 852         qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
 853         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 854                           sizeof(struct tcp_upload_params),
 855                           p_conn->tcp_upload_params_virt_addr,
 856                           p_conn->tcp_upload_params_phys_addr);
 857         dma_free_coherent(&p_hwfn->cdev->pdev->dev,
 858                           sizeof(struct scsi_terminate_extra_params),
 859                           p_conn->queue_cnts_virt_addr,
 860                           p_conn->queue_cnts_phys_addr);
 861         kfree(p_conn);
 862 }
 863
 864 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
 865 {
 866         struct qed_iscsi_info *p_iscsi_info;
 867
 868         p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
 869         if (!p_iscsi_info)
 870                 return -ENOMEM;
 871
 872         INIT_LIST_HEAD(&p_iscsi_info->free_list);
 873
 874         p_hwfn->p_iscsi_info = p_iscsi_info;
 875         return 0;
 876 }
 877
 878 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
 879 {
 880         spin_lock_init(&p_hwfn->p_iscsi_info->lock);
 881 }
 882
 883 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
 884 {
 885         struct qed_iscsi_conn *p_conn = NULL;
 886
 887         if (!p_hwfn->p_iscsi_info)
 888                 return;
 889
 890         while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
 891                 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
 892                                           struct qed_iscsi_conn, list_entry);
 893                 if (p_conn) {
 894                         list_del(&p_conn->list_entry);
 895                         qed_iscsi_free_connection(p_hwfn, p_conn);
 896                 }
 897         }
 898
 899         kfree(p_hwfn->p_iscsi_info);
 900         p_hwfn->p_iscsi_info = NULL;
 901 }
 902
 903 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
 904                                   struct qed_ptt *p_ptt,
 905                                   struct qed_iscsi_stats *p_stats)
 906 {
 907         struct tstorm_iscsi_stats_drv tstats;
 908         u32 tstats_addr;
 909
 910         memset(&tstats, 0, sizeof(tstats));
 911         tstats_addr = BAR0_MAP_REG_TSDM_RAM +
 912                       TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 913         qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
 914
 915         p_stats->iscsi_rx_bytes_cnt =
 916             HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
 917         p_stats->iscsi_rx_packet_cnt =
 918             HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
 919         p_stats->iscsi_rx_new_ooo_isle_events_cnt =
 920             HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
 921         p_stats->iscsi_cmdq_threshold_cnt =
 922             le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
 923         p_stats->iscsi_rq_threshold_cnt =
 924             le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
 925         p_stats->iscsi_immq_threshold_cnt =
 926             le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
 927 }
 928
 929 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
 930                                   struct qed_ptt *p_ptt,
 931                                   struct qed_iscsi_stats *p_stats)
 932 {
 933         struct mstorm_iscsi_stats_drv mstats;
 934         u32 mstats_addr;
 935
 936         memset(&mstats, 0, sizeof(mstats));
 937         mstats_addr = BAR0_MAP_REG_MSDM_RAM +
 938                       MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 939         qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
 940
 941         p_stats->iscsi_rx_dropped_pdus_task_not_valid =
 942             HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
 943 }
 944
 945 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
 946                                   struct qed_ptt *p_ptt,
 947                                   struct qed_iscsi_stats *p_stats)
 948 {
 949         struct ustorm_iscsi_stats_drv ustats;
 950         u32 ustats_addr;
 951
 952         memset(&ustats, 0, sizeof(ustats));
 953         ustats_addr = BAR0_MAP_REG_USDM_RAM +
 954                       USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
 955         qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
 956
 957         p_stats->iscsi_rx_data_pdu_cnt =
 958             HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
 959         p_stats->iscsi_rx_r2t_pdu_cnt =
 960             HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
 961         p_stats->iscsi_rx_total_pdu_cnt =
 962             HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
 963 }
 964
 965 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
 966                                   struct qed_ptt *p_ptt,
 967                                   struct qed_iscsi_stats *p_stats)
 968 {
 969         struct xstorm_iscsi_stats_drv xstats;
 970         u32 xstats_addr;
 971
 972         memset(&xstats, 0, sizeof(xstats));
 973         xstats_addr = BAR0_MAP_REG_XSDM_RAM +
 974                       XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 975         qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
 976
 977         p_stats->iscsi_tx_go_to_slow_start_event_cnt =
 978             HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
 979         p_stats->iscsi_tx_fast_retransmit_event_cnt =
 980             HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
 981 }
 982
 983 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
 984                                   struct qed_ptt *p_ptt,
 985                                   struct qed_iscsi_stats *p_stats)
 986 {
 987         struct ystorm_iscsi_stats_drv ystats;
 988         u32 ystats_addr;
 989
 990         memset(&ystats, 0, sizeof(ystats));
 991         ystats_addr = BAR0_MAP_REG_YSDM_RAM +
 992                       YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
 993         qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
 994
 995         p_stats->iscsi_tx_data_pdu_cnt =
 996             HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
 997         p_stats->iscsi_tx_r2t_pdu_cnt =
 998             HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
 999         p_stats->iscsi_tx_total_pdu_cnt =
1000             HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1001 }
1002
1003 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1004                                   struct qed_ptt *p_ptt,
1005                                   struct qed_iscsi_stats *p_stats)
1006 {
1007         struct pstorm_iscsi_stats_drv pstats;
1008         u32 pstats_addr;
1009
1010         memset(&pstats, 0, sizeof(pstats));
1011         pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1012                       PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1013         qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1014
1015         p_stats->iscsi_tx_bytes_cnt =
1016             HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1017         p_stats->iscsi_tx_packet_cnt =
1018             HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1019 }
1020
1021 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1022                                struct qed_iscsi_stats *stats)
1023 {
1024         struct qed_ptt *p_ptt;
1025
1026         memset(stats, 0, sizeof(*stats));
1027
1028         p_ptt = qed_ptt_acquire(p_hwfn);
1029         if (!p_ptt) {
1030                 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1031                 return -EAGAIN;
1032         }
1033
1034         _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1035         _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1036         _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1037
1038         _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1039         _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1040         _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1041
1042         qed_ptt_release(p_hwfn, p_ptt);
1043
1044         return 0;
1045 }
1046
1047 struct qed_hash_iscsi_con {
1048         struct hlist_node node;
1049         struct qed_iscsi_conn *con;
1050 };
1051
1052 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1053                                    struct qed_dev_iscsi_info *info)
1054 {
1055         struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
1056
1057         int rc;
1058
1059         memset(info, 0, sizeof(*info));
1060         rc = qed_fill_dev_info(cdev, &info->common);
1061
1062         info->primary_dbq_rq_addr =
1063             qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1064         info->secondary_bdq_rq_addr =
1065             qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1066
1067         info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1068
1069         return rc;
1070 }
1071
1072 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1073                                    struct qed_iscsi_cb_ops *ops, void *cookie)
1074 {
1075         cdev->protocol_ops.iscsi = ops;
1076         cdev->ops_cookie = cookie;
1077 }
1078
1079 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1080                                                      u32 handle)
1081 {
1082         struct qed_hash_iscsi_con *hash_con = NULL;
1083
1084         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1085                 return NULL;
1086
1087         hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1088                 if (hash_con->con->icid == handle)
1089                         break;
1090         }
1091
1092         if (!hash_con || (hash_con->con->icid != handle))
1093                 return NULL;
1094
1095         return hash_con;
1096 }
1097
1098 static int qed_iscsi_stop(struct qed_dev *cdev)
1099 {
1100         int rc;
1101
1102         if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1103                 DP_NOTICE(cdev, "iscsi already stopped\n");
1104                 return 0;
1105         }
1106
1107         if (!hash_empty(cdev->connections)) {
1108                 DP_NOTICE(cdev,
1109                           "Can't stop iscsi - not all connections were returned\n");
1110                 return -EINVAL;
1111         }
1112
1113         /* Stop the iscsi */
1114         rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1115                                     NULL);
1116         cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1117
1118         return rc;
1119 }
1120
1121 static int qed_iscsi_start(struct qed_dev *cdev,
1122                            struct qed_iscsi_tid *tasks,
1123                            void *event_context,
1124                            iscsi_event_cb_t async_event_cb)
1125 {
1126         int rc;
1127         struct qed_tid_mem *tid_info;
1128
1129         if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1130                 DP_NOTICE(cdev, "iscsi already started;\n");
1131                 return 0;
1132         }
1133
1134         rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1135                                      NULL, event_context, async_event_cb);
1136         if (rc) {
1137                 DP_NOTICE(cdev, "Failed to start iscsi\n");
1138                 return rc;
1139         }
1140
1141         cdev->flags |= QED_FLAG_STORAGE_STARTED;
1142         hash_init(cdev->connections);
1143
1144         if (!tasks)
1145                 return 0;
1146
1147         tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1148
1149         if (!tid_info) {
1150                 qed_iscsi_stop(cdev);
1151                 return -ENOMEM;
1152         }
1153
1154         rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
1155         if (rc) {
1156                 DP_NOTICE(cdev, "Failed to gather task information\n");
1157                 qed_iscsi_stop(cdev);
1158                 kfree(tid_info);
1159                 return rc;
1160         }
1161
1162         /* Fill task information */
1163         tasks->size = tid_info->tid_size;
1164         tasks->num_tids_per_block = tid_info->num_tids_per_block;
1165         memcpy(tasks->blocks, tid_info->blocks,
1166                MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1167
1168         kfree(tid_info);
1169
1170         return 0;
1171 }
1172
1173 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1174                                   u32 *handle,
1175                                   u32 *fw_cid, void __iomem **p_doorbell)
1176 {
1177         struct qed_hash_iscsi_con *hash_con;
1178         int rc;
1179
1180         /* Allocate a hashed connection */
1181         hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1182         if (!hash_con)
1183                 return -ENOMEM;
1184
1185         /* Acquire the connection */
1186         rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
1187                                           &hash_con->con);
1188         if (rc) {
1189                 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1190                 kfree(hash_con);
1191                 return rc;
1192         }
1193
1194         /* Added the connection to hash table */
1195         *handle = hash_con->con->icid;
1196         *fw_cid = hash_con->con->fw_cid;
1197         hash_add(cdev->connections, &hash_con->node, *handle);
1198
1199         if (p_doorbell)
1200                 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev),
1201                                                     *handle);
1202
1203         return 0;
1204 }
1205
1206 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1207 {
1208         struct qed_hash_iscsi_con *hash_con;
1209
1210         hash_con = qed_iscsi_get_hash(cdev, handle);
1211         if (!hash_con) {
1212                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1213                           handle);
1214                 return -EINVAL;
1215         }
1216
1217         hlist_del(&hash_con->node);
1218         qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
1219         kfree(hash_con);
1220
1221         return 0;
1222 }
1223
1224 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1225                                   u32 handle,
1226                                   struct qed_iscsi_params_offload *conn_info)
1227 {
1228         struct qed_hash_iscsi_con *hash_con;
1229         struct qed_iscsi_conn *con;
1230
1231         hash_con = qed_iscsi_get_hash(cdev, handle);
1232         if (!hash_con) {
1233                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1234                           handle);
1235                 return -EINVAL;
1236         }
1237
1238         /* Update the connection with information from the params */
1239         con = hash_con->con;
1240
1241         ether_addr_copy(con->local_mac, conn_info->src.mac);
1242         ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1243         memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1244         memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1245         con->local_port = conn_info->src.port;
1246         con->remote_port = conn_info->dst.port;
1247
1248         con->layer_code = conn_info->layer_code;
1249         con->sq_pbl_addr = conn_info->sq_pbl_addr;
1250         con->initial_ack = conn_info->initial_ack;
1251         con->vlan_id = conn_info->vlan_id;
1252         con->tcp_flags = conn_info->tcp_flags;
1253         con->ip_version = conn_info->ip_version;
1254         con->default_cq = conn_info->default_cq;
1255         con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1256         con->dup_ack_theshold = conn_info->dup_ack_theshold;
1257         con->rcv_next = conn_info->rcv_next;
1258         con->snd_una = conn_info->snd_una;
1259         con->snd_next = conn_info->snd_next;
1260         con->snd_max = conn_info->snd_max;
1261         con->snd_wnd = conn_info->snd_wnd;
1262         con->rcv_wnd = conn_info->rcv_wnd;
1263         con->snd_wl1 = conn_info->snd_wl1;
1264         con->cwnd = conn_info->cwnd;
1265         con->ss_thresh = conn_info->ss_thresh;
1266         con->srtt = conn_info->srtt;
1267         con->rtt_var = conn_info->rtt_var;
1268         con->ts_recent = conn_info->ts_recent;
1269         con->ts_recent_age = conn_info->ts_recent_age;
1270         con->total_rt = conn_info->total_rt;
1271         con->ka_timeout_delta = conn_info->ka_timeout_delta;
1272         con->rt_timeout_delta = conn_info->rt_timeout_delta;
1273         con->dup_ack_cnt = conn_info->dup_ack_cnt;
1274         con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1275         con->ka_probe_cnt = conn_info->ka_probe_cnt;
1276         con->rt_cnt = conn_info->rt_cnt;
1277         con->flow_label = conn_info->flow_label;
1278         con->ka_timeout = conn_info->ka_timeout;
1279         con->ka_interval = conn_info->ka_interval;
1280         con->max_rt_time = conn_info->max_rt_time;
1281         con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1282         con->ttl = conn_info->ttl;
1283         con->tos_or_tc = conn_info->tos_or_tc;
1284         con->remote_port = conn_info->remote_port;
1285         con->local_port = conn_info->local_port;
1286         con->mss = conn_info->mss;
1287         con->snd_wnd_scale = conn_info->snd_wnd_scale;
1288         con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1289         con->da_timeout_value = conn_info->da_timeout_value;
1290         con->ack_frequency = conn_info->ack_frequency;
1291
1292         /* Set default values on other connection fields */
1293         con->offl_flags = 0x1;
1294
1295         return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con,
1296                                          QED_SPQ_MODE_EBLOCK, NULL);
1297 }
1298
1299 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1300                                  u32 handle,
1301                                  struct qed_iscsi_params_update *conn_info)
1302 {
1303         struct qed_hash_iscsi_con *hash_con;
1304         struct qed_iscsi_conn *con;
1305
1306         hash_con = qed_iscsi_get_hash(cdev, handle);
1307         if (!hash_con) {
1308                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1309                           handle);
1310                 return -EINVAL;
1311         }
1312
1313         /* Update the connection with information from the params */
1314         con = hash_con->con;
1315         con->update_flag = conn_info->update_flag;
1316         con->max_seq_size = conn_info->max_seq_size;
1317         con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1318         con->max_send_pdu_length = conn_info->max_send_pdu_length;
1319         con->first_seq_length = conn_info->first_seq_length;
1320         con->exp_stat_sn = conn_info->exp_stat_sn;
1321
1322         return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con,
1323                                         QED_SPQ_MODE_EBLOCK, NULL);
1324 }
1325
1326 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1327 {
1328         struct qed_hash_iscsi_con *hash_con;
1329
1330         hash_con = qed_iscsi_get_hash(cdev, handle);
1331         if (!hash_con) {
1332                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1333                           handle);
1334                 return -EINVAL;
1335         }
1336
1337         return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
1338                                           QED_SPQ_MODE_EBLOCK, NULL);
1339 }
1340
1341 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1342                                   u32 handle, u8 abrt_conn)
1343 {
1344         struct qed_hash_iscsi_con *hash_con;
1345
1346         hash_con = qed_iscsi_get_hash(cdev, handle);
1347         if (!hash_con) {
1348                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1349                           handle);
1350                 return -EINVAL;
1351         }
1352
1353         hash_con->con->abortive_dsconnect = abrt_conn;
1354
1355         return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
1356                                            QED_SPQ_MODE_EBLOCK, NULL);
1357 }
1358
1359 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1360 {
1361         return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats);
1362 }
1363
1364 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1365                                 u32 handle, const u8 *mac)
1366 {
1367         struct qed_hash_iscsi_con *hash_con;
1368
1369         hash_con = qed_iscsi_get_hash(cdev, handle);
1370         if (!hash_con) {
1371                 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1372                           handle);
1373                 return -EINVAL;
1374         }
1375
1376         return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con,
1377                                        QED_SPQ_MODE_EBLOCK, NULL);
1378 }
1379
1380 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1381                                   struct qed_mcp_iscsi_stats *stats)
1382 {
1383         struct qed_iscsi_stats proto_stats;
1384
1385         /* Retrieve FW statistics */
1386         memset(&proto_stats, 0, sizeof(proto_stats));
1387         if (qed_iscsi_stats(cdev, &proto_stats)) {
1388                 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1389                            "Failed to collect ISCSI statistics\n");
1390                 return;
1391         }
1392
1393         /* Translate FW statistics into struct */
1394         stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1395         stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1396         stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1397         stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1398 }
1399
1400 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1401         .common = &qed_common_ops_pass,
1402         .ll2 = &qed_ll2_ops_pass,
1403         .fill_dev_info = &qed_fill_iscsi_dev_info,
1404         .register_ops = &qed_register_iscsi_ops,
1405         .start = &qed_iscsi_start,
1406         .stop = &qed_iscsi_stop,
1407         .acquire_conn = &qed_iscsi_acquire_conn,
1408         .release_conn = &qed_iscsi_release_conn,
1409         .offload_conn = &qed_iscsi_offload_conn,
1410         .update_conn = &qed_iscsi_update_conn,
1411         .destroy_conn = &qed_iscsi_destroy_conn,
1412         .clear_sq = &qed_iscsi_clear_conn_sq,
1413         .get_stats = &qed_iscsi_stats,
1414         .change_mac = &qed_iscsi_change_mac,
1415 };
1416
1417 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1418 {
1419         return &qed_iscsi_ops_pass;
1420 }
1421 EXPORT_SYMBOL(qed_get_iscsi_ops);
1422
1423 void qed_put_iscsi_ops(void)
1424 {
1425 }
1426 EXPORT_SYMBOL(qed_put_iscsi_ops);