cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mtk_vcodec_intr.c (1139B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3* Copyright (c) 2016 MediaTek Inc.
      4* Author: Tiffany Lin <tiffany.lin@mediatek.com>
      5*/
      6
      7#include <linux/errno.h>
      8#include <linux/wait.h>
      9
     10#include "mtk_vcodec_drv.h"
     11#include "mtk_vcodec_intr.h"
     12#include "mtk_vcodec_util.h"
     13
     14int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *ctx,
     15				 int command, unsigned int timeout_ms,
     16				 unsigned int hw_id)
     17{
     18	long timeout_jiff, ret;
     19	int status = 0;
     20
     21	timeout_jiff = msecs_to_jiffies(timeout_ms);
     22	ret = wait_event_interruptible_timeout(ctx->queue[hw_id],
     23					       ctx->int_cond[hw_id],
     24					       timeout_jiff);
     25
     26	if (!ret) {
     27		status = -1;	/* timeout */
     28		mtk_v4l2_err("[%d] cmd=%d, type=%d, dec timeout=%ums (%d %d)",
     29			     ctx->id, command, ctx->type, timeout_ms,
     30			     ctx->int_cond[hw_id], ctx->int_type[hw_id]);
     31	} else if (-ERESTARTSYS == ret) {
     32		status = -1;
     33		mtk_v4l2_err("[%d] cmd=%d, type=%d, dec inter fail (%d %d)",
     34			     ctx->id, command, ctx->type,
     35			     ctx->int_cond[hw_id], ctx->int_type[hw_id]);
     36	}
     37
     38	ctx->int_cond[hw_id] = 0;
     39	ctx->int_type[hw_id] = 0;
     40
     41	return status;
     42}
     43EXPORT_SYMBOL(mtk_vcodec_wait_for_done_ctx);