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         uint8_t payload[MAX(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         (void) memset(payload, 0, sizeof (payload));
  68         req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT;
  69         req.emr_in_buf = payload;
  70         req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN;
  71         req.emr_out_buf = payload;
  72         req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN;
  73
  74         MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level);
  75
  76         efx_mcdi_execute(enp, &req);
  77
  78         if (req.emr_rc != 0) {
  79                 rc = req.emr_rc;
  80                 goto fail2;
  81         }
  82
  83         return (0);
  84
  85 fail2:
  86         EFSYS_PROBE(fail2);
  87
  88 fail1:
  89         EFSYS_PROBE1(fail1, efx_rc_t, rc);
  90
  91         return (rc);
  92 }
  93
  94         __checkReturn   efx_rc_t
  95 ef10_intr_trigger(
  96         __in            efx_nic_t *enp,
  97         __in            unsigned int level)
  98 {
  99         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
 100         efx_rc_t rc;
 101
 102         if (encp->enc_bug41750_workaround) {
 103                 /*
 104                  * bug 41750: Test interrupts don't work on Greenport
 105                  * bug 50084: Test interrupts don't work on VFs
 106                  */
 107                 rc = ENOTSUP;
 108                 goto fail1;
 109         }
 110
 111         if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0)
 112                 goto fail2;
 113
 114         return (0);
 115
 116 fail2:
 117         EFSYS_PROBE(fail2);
 118 fail1:
 119         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 120
 121         return (rc);
 122 }
 123
 124                         void
 125 ef10_intr_status_line(
 126         __in            efx_nic_t *enp,
 127         __out           boolean_t *fatalp,
 128         __out           uint32_t *qmaskp)
 129 {
 130         efx_dword_t dword;
 131
 132         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
 133             enp->en_family == EFX_FAMILY_MEDFORD ||
 134             enp->en_family == EFX_FAMILY_MEDFORD2);
 135
 136         /* Read the queue mask and implicitly acknowledge the interrupt. */
 137         EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE);
 138         *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
 139
 140         EFSYS_PROBE1(qmask, uint32_t, *qmaskp);
 141
 142         *fatalp = B_FALSE;
 143 }
 144
 145                         void
 146 ef10_intr_status_message(
 147         __in            efx_nic_t *enp,
 148         __in            unsigned int message,
 149         __out           boolean_t *fatalp)
 150 {
 151         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
 152             enp->en_family == EFX_FAMILY_MEDFORD ||
 153             enp->en_family == EFX_FAMILY_MEDFORD2);
 154
 155         _NOTE(ARGUNUSED(enp, message))
 156
 157         /* EF10 fatal errors are reported via events */
 158         *fatalp = B_FALSE;
 159 }
 160
 161                         void
 162 ef10_intr_fatal(
 163         __in            efx_nic_t *enp)
 164 {
 165         /* EF10 fatal errors are reported via events */
 166         _NOTE(ARGUNUSED(enp))
 167 }
 168
 169                         void
 170 ef10_intr_fini(
 171         __in            efx_nic_t *enp)
 172 {
 173         _NOTE(ARGUNUSED(enp))
 174 }
 175
 176 #endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */