drivers/net/sfc/base/ef10_intr.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2012-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  */
   6
   7 #include "efx.h"
   8 #include "efx_impl.h"
   9
  10
  11 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
  12
  13         __checkReturn   efx_rc_t
  14 ef10_intr_init(
  15         __in            efx_nic_t *enp,
  16         __in            efx_intr_type_t type,
  17         __in            efsys_mem_t *esmp)
  18 {
  19         _NOTE(ARGUNUSED(enp, type, esmp))
  20         return (0);
  21 }
  22
  23
  24                         void
  25 ef10_intr_enable(
  26         __in            efx_nic_t *enp)
  27 {
  28         _NOTE(ARGUNUSED(enp))
  29 }
  30
  31
  32                         void
  33 ef10_intr_disable(
  34         __in            efx_nic_t *enp)
  35 {
  36         _NOTE(ARGUNUSED(enp))
  37 }
  38
  39
  40                         void
  41 ef10_intr_disable_unlocked(
  42         __in            efx_nic_t *enp)
  43 {
  44         _NOTE(ARGUNUSED(enp))
  45 }
  46
  47
  48 static  __checkReturn   efx_rc_t
  49 efx_mcdi_trigger_interrupt(
  50         __in            efx_nic_t *enp,
  51         __in            unsigned int level)
  52 {
  53         efx_mcdi_req_t req;
  54         EFX_MCDI_DECLARE_BUF(payload, MC_CMD_TRIGGER_INTERRUPT_IN_LEN,
  55                 MC_CMD_TRIGGER_INTERRUPT_OUT_LEN);
  56         efx_rc_t rc;
  57
  58         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
  59             enp->en_family == EFX_FAMILY_MEDFORD ||
  60             enp->en_family == EFX_FAMILY_MEDFORD2);
  61
  62         if (level >= enp->en_nic_cfg.enc_intr_limit) {
  63                 rc = EINVAL;
  64                 goto fail1;
  65         }
  66
  67         req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT;
  68         req.emr_in_buf = payload;
  69         req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN;
  70         req.emr_out_buf = payload;
  71         req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN;
  72
  73         MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level);
  74
  75         efx_mcdi_execute(enp, &req);
  76
  77         if (req.emr_rc != 0) {
  78                 rc = req.emr_rc;
  79                 goto fail2;
  80         }
  81
  82         return (0);
  83
  84 fail2:
  85         EFSYS_PROBE(fail2);
  86
  87 fail1:
  88         EFSYS_PROBE1(fail1, efx_rc_t, rc);
  89
  90         return (rc);
  91 }
  92
  93         __checkReturn   efx_rc_t
  94 ef10_intr_trigger(
  95         __in            efx_nic_t *enp,
  96         __in            unsigned int level)
  97 {
  98         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
  99         efx_rc_t rc;
 100
 101         if (encp->enc_bug41750_workaround) {
 102                 /*
 103                  * bug 41750: Test interrupts don't work on Greenport
 104                  * bug 50084: Test interrupts don't work on VFs
 105                  */
 106                 rc = ENOTSUP;
 107                 goto fail1;
 108         }
 109
 110         if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0)
 111                 goto fail2;
 112
 113         return (0);
 114
 115 fail2:
 116         EFSYS_PROBE(fail2);
 117 fail1:
 118         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 119
 120         return (rc);
 121 }
 122
 123                         void
 124 ef10_intr_status_line(
 125         __in            efx_nic_t *enp,
 126         __out           boolean_t *fatalp,
 127         __out           uint32_t *qmaskp)
 128 {
 129         efx_dword_t dword;
 130
 131         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
 132             enp->en_family == EFX_FAMILY_MEDFORD ||
 133             enp->en_family == EFX_FAMILY_MEDFORD2);
 134
 135         /* Read the queue mask and implicitly acknowledge the interrupt. */
 136         EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE);
 137         *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
 138
 139         EFSYS_PROBE1(qmask, uint32_t, *qmaskp);
 140
 141         *fatalp = B_FALSE;
 142 }
 143
 144                         void
 145 ef10_intr_status_message(
 146         __in            efx_nic_t *enp,
 147         __in            unsigned int message,
 148         __out           boolean_t *fatalp)
 149 {
 150         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
 151             enp->en_family == EFX_FAMILY_MEDFORD ||
 152             enp->en_family == EFX_FAMILY_MEDFORD2);
 153
 154         _NOTE(ARGUNUSED(enp, message))
 155
 156         /* EF10 fatal errors are reported via events */
 157         *fatalp = B_FALSE;
 158 }
 159
 160                         void
 161 ef10_intr_fatal(
 162         __in            efx_nic_t *enp)
 163 {
 164         /* EF10 fatal errors are reported via events */
 165         _NOTE(ARGUNUSED(enp))
 166 }
 167
 168                         void
 169 ef10_intr_fini(
 170         __in            efx_nic_t *enp)
 171 {
 172         _NOTE(ARGUNUSED(enp))
 173 }
 174
 175 #endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */