/*
* Copyright 2019 Advanced Micro Devices , Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
* Authors : AMD
*
*/
#include "dmub/dmub_srv_stat.h"
#include "dmub/inc/dmub_cmd.h"
/**
* DOC : DMUB_SRV STAT Interface
*
* These interfaces are called without acquiring DAL and DC locks .
* Hence , there is limitations on whese interfaces can access . Only
* variables exclusively defined for these interfaces can be modified .
*/
/**
* dmub_srv_stat_get_notification - Retrieves a dmub outbox notification , set up dmub notification
* structure with message information . Also a pending bit if queue
* is having more notifications
* @ dmub : dmub srv structure
* @ notify : dmub notification structure to be filled up
*
* Returns : dmub_status
*/
enum dmub_status dmub_srv_stat_get_notification(struct dmub_srv *dmub,
struct dmub_notification *notify)
{
/**
* This function is called without dal and dc locks , so
* we shall not modify any dmub variables , only dmub - > outbox1_rb
* is exempted as it is exclusively accessed by this function
*/
union dmub_rb_out_cmd cmd = {0 };
if (!dmub->hw_init) {
notify->type = DMUB_NOTIFICATION_NO_DATA;
notify->pending_notification = false ;
return DMUB_STATUS_INVALID;
}
/* Get write pointer which is updated by dmub */
dmub->outbox1_rb.wrpt = dmub->hw_funcs.get_outbox1_wptr(dmub);
if (!dmub_rb_out_front(&dmub->outbox1_rb, &cmd)) {
notify->type = DMUB_NOTIFICATION_NO_DATA;
notify->pending_notification = false ;
return DMUB_STATUS_OK;
}
switch (cmd.cmd_common.header.type) {
case DMUB_OUT_CMD__DP_AUX_REPLY:
notify->type = DMUB_NOTIFICATION_AUX_REPLY;
notify->link_index = cmd.dp_aux_reply.control.instance;
notify->result = cmd.dp_aux_reply.control.result;
dmub_memcpy((void *)¬ify->aux_reply,
(void *)&cmd.dp_aux_reply.reply_data, sizeof (struct aux_reply_data));
break ;
case DMUB_OUT_CMD__DP_HPD_NOTIFY:
if (cmd.dp_hpd_notify.hpd_data.hpd_type == DP_HPD) {
notify->type = DMUB_NOTIFICATION_HPD;
notify->hpd_status = cmd.dp_hpd_notify.hpd_data.hpd_status;
} else {
notify->type = DMUB_NOTIFICATION_HPD_IRQ;
}
notify->link_index = cmd.dp_hpd_notify.hpd_data.instance;
notify->result = AUX_RET_SUCCESS;
break ;
case DMUB_OUT_CMD__SET_CONFIG_REPLY:
notify->type = DMUB_NOTIFICATION_SET_CONFIG_REPLY;
notify->link_index = cmd.set_config_reply.set_config_reply_control.instance;
notify->sc_status = cmd.set_config_reply.set_config_reply_control.status;
break ;
case DMUB_OUT_CMD__DPIA_NOTIFICATION:
notify->type = DMUB_NOTIFICATION_DPIA_NOTIFICATION;
notify->link_index = cmd.dpia_notification.payload.header.instance;
break ;
case DMUB_OUT_CMD__HPD_SENSE_NOTIFY:
notify->type = DMUB_NOTIFICATION_HPD_SENSE_NOTIFY;
dmub_memcpy(¬ify->hpd_sense_notify,
&cmd.hpd_sense_notify.data,
sizeof (cmd.hpd_sense_notify.data));
break ;
case DMUB_OUT_CMD__FUSED_IO:
notify->type = DMUB_NOTIFICATION_FUSED_IO;
dmub_memcpy(¬ify->fused_request, &cmd.fused_io.request, sizeof (cmd.fused_io.request));
break ;
default :
notify->type = DMUB_NOTIFICATION_NO_DATA;
break ;
}
/* Pop outbox1 ringbuffer and update read pointer */
dmub_rb_pop_front(&dmub->outbox1_rb);
dmub->hw_funcs.set_outbox1_rptr(dmub, dmub->outbox1_rb.rptr);
/**
* Notify dc whether dmub has a pending outbox message ,
* this is to avoid one more call to dmub_srv_stat_get_notification
*/
if (dmub_rb_empty(&dmub->outbox1_rb))
notify->pending_notification = false ;
else
notify->pending_notification = true ;
return DMUB_STATUS_OK;
}
Messung V0.5 in Prozent C=95 H=100 G=97
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-05)
¤
*© Formatika GbR, Deutschland