ef10_intr.c

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    1 /*-
    2  * Copyright (c) 2012-2016 Solarflare Communications Inc.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions are met:
    7  *
    8  * 1. Redistributions of source code must retain the above copyright notice,
    9  *    this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright notice,
   11  *    this list of conditions and the following disclaimer in the documentation
   12  *    and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   16  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   17  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   21  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   22  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   23  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
   24  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  *
   26  * The views and conclusions contained in the software and documentation are
   27  * those of the authors and should not be interpreted as representing official
   28  * policies, either expressed or implied, of the FreeBSD Project.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 #include "efx.h"
   35 #include "efx_impl.h"
   36 
   37 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
   38 
   39         __checkReturn   efx_rc_t
   40 ef10_intr_init(
   41         __in            efx_nic_t *enp,
   42         __in            efx_intr_type_t type,
   43         __in            efsys_mem_t *esmp)
   44 {
   45         _NOTE(ARGUNUSED(enp, type, esmp))
   46         return (0);
   47 }
   48 
   49                         void
   50 ef10_intr_enable(
   51         __in            efx_nic_t *enp)
   52 {
   53         _NOTE(ARGUNUSED(enp))
   54 }
   55 
   56                         void
   57 ef10_intr_disable(
   58         __in            efx_nic_t *enp)
   59 {
   60         _NOTE(ARGUNUSED(enp))
   61 }
   62 
   63                         void
   64 ef10_intr_disable_unlocked(
   65         __in            efx_nic_t *enp)
   66 {
   67         _NOTE(ARGUNUSED(enp))
   68 }
   69 
   70 static  __checkReturn   efx_rc_t
   71 efx_mcdi_trigger_interrupt(
   72         __in            efx_nic_t *enp,
   73         __in            unsigned int level)
   74 {
   75         efx_mcdi_req_t req;
   76         EFX_MCDI_DECLARE_BUF(payload, MC_CMD_TRIGGER_INTERRUPT_IN_LEN,
   77                 MC_CMD_TRIGGER_INTERRUPT_OUT_LEN);
   78         efx_rc_t rc;
   79 
   80         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
   81             enp->en_family == EFX_FAMILY_MEDFORD ||
   82             enp->en_family == EFX_FAMILY_MEDFORD2);
   83 
   84         if (level >= enp->en_nic_cfg.enc_intr_limit) {
   85                 rc = EINVAL;
   86                 goto fail1;
   87         }
   88 
   89         req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT;
   90         req.emr_in_buf = payload;
   91         req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN;
   92         req.emr_out_buf = payload;
   93         req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN;
   94 
   95         MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level);
   96 
   97         efx_mcdi_execute(enp, &req);
   98 
   99         if (req.emr_rc != 0) {
  100                 rc = req.emr_rc;
  101                 goto fail2;
  102         }
  103 
  104         return (0);
  105 
  106 fail2:
  107         EFSYS_PROBE(fail2);
  108 
  109 fail1:
  110         EFSYS_PROBE1(fail1, efx_rc_t, rc);
  111 
  112         return (rc);
  113 }
  114 
  115         __checkReturn   efx_rc_t
  116 ef10_intr_trigger(
  117         __in            efx_nic_t *enp,
  118         __in            unsigned int level)
  119 {
  120         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
  121         efx_rc_t rc;
  122 
  123         if (encp->enc_bug41750_workaround) {
  124                 /*
  125                  * bug 41750: Test interrupts don't work on Greenport
  126                  * bug 50084: Test interrupts don't work on VFs
  127                  */
  128                 rc = ENOTSUP;
  129                 goto fail1;
  130         }
  131 
  132         if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0)
  133                 goto fail2;
  134 
  135         return (0);
  136 
  137 fail2:
  138         EFSYS_PROBE(fail2);
  139 fail1:
  140         EFSYS_PROBE1(fail1, efx_rc_t, rc);
  141 
  142         return (rc);
  143 }
  144 
  145                         void
  146 ef10_intr_status_line(
  147         __in            efx_nic_t *enp,
  148         __out           boolean_t *fatalp,
  149         __out           uint32_t *qmaskp)
  150 {
  151         efx_dword_t dword;
  152 
  153         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
  154             enp->en_family == EFX_FAMILY_MEDFORD ||
  155             enp->en_family == EFX_FAMILY_MEDFORD2);
  156 
  157         /* Read the queue mask and implicitly acknowledge the interrupt. */
  158         EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE);
  159         *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
  160 
  161         EFSYS_PROBE1(qmask, uint32_t, *qmaskp);
  162 
  163         *fatalp = B_FALSE;
  164 }
  165 
  166                         void
  167 ef10_intr_status_message(
  168         __in            efx_nic_t *enp,
  169         __in            unsigned int message,
  170         __out           boolean_t *fatalp)
  171 {
  172         EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
  173             enp->en_family == EFX_FAMILY_MEDFORD ||
  174             enp->en_family == EFX_FAMILY_MEDFORD2);
  175 
  176         _NOTE(ARGUNUSED(enp, message))
  177 
  178         /* EF10 fatal errors are reported via events */
  179         *fatalp = B_FALSE;
  180 }
  181 
  182                         void
  183 ef10_intr_fatal(
  184         __in            efx_nic_t *enp)
  185 {
  186         /* EF10 fatal errors are reported via events */
  187         _NOTE(ARGUNUSED(enp))
  188 }
  189 
  190                         void
  191 ef10_intr_fini(
  192         __in            efx_nic_t *enp)
  193 {
  194         _NOTE(ARGUNUSED(enp))
  195 }
  196 
  197 #endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */

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FreeBSD/Linux Kernel Cross Reference sys/dev/sfxge/common/ef10_intr.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/sfxge/common/ef10_intr.c