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

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015 QLogic Corporation
   3  *
   4  * This software is available under the terms of the GNU General Public License
   5  * (GPL) Version 2, available from the file COPYING in the main directory of
   6  * this source tree.
   7  */
   8
   9 #include <linux/types.h>
  10 #include <asm/byteorder.h>
  11 #include <linux/bitops.h>
  12 #include <linux/errno.h>
  13 #include <linux/kernel.h>
  14 #include <linux/string.h>
  15 #include "qed.h"
  16 #include <linux/qed/qed_chain.h>
  17 #include "qed_cxt.h"
  18 #include "qed_hsi.h"
  19 #include "qed_hw.h"
  20 #include "qed_int.h"
  21 #include "qed_reg_addr.h"
  22 #include "qed_sp.h"
  23
  24 int qed_sp_init_request(struct qed_hwfn *p_hwfn,
  25                         struct qed_spq_entry **pp_ent,
  26                         u8 cmd,
  27                         u8 protocol,
  28                         struct qed_sp_init_data *p_data)
  29 {
  30         u32 opaque_cid = p_data->opaque_fid << 16 | p_data->cid;
  31         struct qed_spq_entry *p_ent = NULL;
  32         int rc;
  33
  34         if (!pp_ent)
  35                 return -ENOMEM;
  36
  37         rc = qed_spq_get_entry(p_hwfn, pp_ent);
  38
  39         if (rc != 0)
  40                 return rc;
  41
  42         p_ent = *pp_ent;
  43
  44         p_ent->elem.hdr.cid             = cpu_to_le32(opaque_cid);
  45         p_ent->elem.hdr.cmd_id          = cmd;
  46         p_ent->elem.hdr.protocol_id     = protocol;
  47
  48         p_ent->priority         = QED_SPQ_PRIORITY_NORMAL;
  49         p_ent->comp_mode        = p_data->comp_mode;
  50         p_ent->comp_done.done   = 0;
  51
  52         switch (p_ent->comp_mode) {
  53         case QED_SPQ_MODE_EBLOCK:
  54                 p_ent->comp_cb.cookie = &p_ent->comp_done;
  55                 break;
  56
  57         case QED_SPQ_MODE_BLOCK:
  58                 if (!p_data->p_comp_data)
  59                         return -EINVAL;
  60
  61                 p_ent->comp_cb.cookie = p_data->p_comp_data->cookie;
  62                 break;
  63
  64         case QED_SPQ_MODE_CB:
  65                 if (!p_data->p_comp_data)
  66                         p_ent->comp_cb.function = NULL;
  67                 else
  68                         p_ent->comp_cb = *p_data->p_comp_data;
  69                 break;
  70
  71         default:
  72                 DP_NOTICE(p_hwfn, "Unknown SPQE completion mode %d\n",
  73                           p_ent->comp_mode);
  74                 return -EINVAL;
  75         }
  76
  77         DP_VERBOSE(p_hwfn, QED_MSG_SPQ,
  78                    "Initialized: CID %08x cmd %02x protocol %02x data_addr %lu comp_mode [%s]\n",
  79                    opaque_cid, cmd, protocol,
  80                    (unsigned long)&p_ent->ramrod,
  81                    D_TRINE(p_ent->comp_mode, QED_SPQ_MODE_EBLOCK,
  82                            QED_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
  83                            "MODE_CB"));
  84
  85         memset(&p_ent->ramrod, 0, sizeof(p_ent->ramrod));
  86
  87         return 0;
  88 }
  89
  90 int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
  91                     enum qed_mf_mode mode)
  92 {
  93         struct pf_start_ramrod_data *p_ramrod = NULL;
  94         u16 sb = qed_int_get_sp_sb_id(p_hwfn);
  95         u8 sb_index = p_hwfn->p_eq->eq_sb_index;
  96         struct qed_spq_entry *p_ent = NULL;
  97         struct qed_sp_init_data init_data;
  98         int rc = -EINVAL;
  99
 100         /* update initial eq producer */
 101         qed_eq_prod_update(p_hwfn,
 102                            qed_chain_get_prod_idx(&p_hwfn->p_eq->chain));
 103
 104         memset(&init_data, 0, sizeof(init_data));
 105         init_data.cid = qed_spq_get_cid(p_hwfn);
 106         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 107         init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
 108
 109         rc = qed_sp_init_request(p_hwfn, &p_ent,
 110                                  COMMON_RAMROD_PF_START,
 111                                  PROTOCOLID_COMMON,
 112                                  &init_data);
 113         if (rc)
 114                 return rc;
 115
 116         p_ramrod = &p_ent->ramrod.pf_start;
 117
 118         p_ramrod->event_ring_sb_id      = cpu_to_le16(sb);
 119         p_ramrod->event_ring_sb_index   = sb_index;
 120         p_ramrod->path_id               = QED_PATH_ID(p_hwfn);
 121         p_ramrod->dont_log_ramrods      = 0;
 122         p_ramrod->log_type_mask         = cpu_to_le16(0xf);
 123         p_ramrod->mf_mode = mode;
 124         switch (mode) {
 125         case QED_MF_DEFAULT:
 126         case QED_MF_NPAR:
 127                 p_ramrod->mf_mode = MF_NPAR;
 128                 break;
 129         case QED_MF_OVLAN:
 130                 p_ramrod->mf_mode = MF_OVLAN;
 131                 break;
 132         default:
 133                 DP_NOTICE(p_hwfn, "Unsupported MF mode, init as DEFAULT\n");
 134                 p_ramrod->mf_mode = MF_NPAR;
 135         }
 136         p_ramrod->outer_tag = p_hwfn->hw_info.ovlan;
 137
 138         /* Place EQ address in RAMROD */
 139         DMA_REGPAIR_LE(p_ramrod->event_ring_pbl_addr,
 140                        p_hwfn->p_eq->chain.pbl.p_phys_table);
 141         p_ramrod->event_ring_num_pages = (u8)p_hwfn->p_eq->chain.page_cnt;
 142
 143         DMA_REGPAIR_LE(p_ramrod->consolid_q_pbl_addr,
 144                        p_hwfn->p_consq->chain.pbl.p_phys_table);
 145
 146         p_hwfn->hw_info.personality = PERSONALITY_ETH;
 147
 148         DP_VERBOSE(p_hwfn, QED_MSG_SPQ,
 149                    "Setting event_ring_sb [id %04x index %02x], outer_tag [%d]\n",
 150                    sb, sb_index,
 151                    p_ramrod->outer_tag);
 152
 153         return qed_spq_post(p_hwfn, p_ent, NULL);
 154 }
 155
 156 int qed_sp_pf_stop(struct qed_hwfn *p_hwfn)
 157 {
 158         struct qed_spq_entry *p_ent = NULL;
 159         struct qed_sp_init_data init_data;
 160         int rc = -EINVAL;
 161
 162         /* Get SPQ entry */
 163         memset(&init_data, 0, sizeof(init_data));
 164         init_data.cid = qed_spq_get_cid(p_hwfn);
 165         init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
 166         init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
 167
 168         rc = qed_sp_init_request(p_hwfn, &p_ent,
 169                                  COMMON_RAMROD_PF_STOP, PROTOCOLID_COMMON,
 170                                  &init_data);
 171         if (rc)
 172                 return rc;
 173
 174         return qed_spq_post(p_hwfn, p_ent, NULL);
 175 }