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

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