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_scp.h (1715B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (c) 2019 MediaTek Inc.
      4 */
      5
      6#ifndef _MTK_SCP_H
      7#define _MTK_SCP_H
      8
      9#include <linux/platform_device.h>
     10
     11typedef void (*scp_ipi_handler_t) (void *data,
     12				   unsigned int len,
     13				   void *priv);
     14struct mtk_scp;
     15
     16/**
     17 * enum ipi_id - the id of inter-processor interrupt
     18 *
     19 * @SCP_IPI_INIT:	 The interrupt from scp is to notfiy kernel
     20 *			 SCP initialization completed.
     21 *			 IPI_SCP_INIT is sent from SCP when firmware is
     22 *			 loaded. AP doesn't need to send IPI_SCP_INIT
     23 *			 command to SCP.
     24 *			 For other IPI below, AP should send the request
     25 *			 to SCP to trigger the interrupt.
     26 * @SCP_IPI_MAX:	 The maximum IPI number
     27 */
     28
     29enum scp_ipi_id {
     30	SCP_IPI_INIT = 0,
     31	SCP_IPI_VDEC_H264,
     32	SCP_IPI_VDEC_VP8,
     33	SCP_IPI_VDEC_VP9,
     34	SCP_IPI_VENC_H264,
     35	SCP_IPI_VENC_VP8,
     36	SCP_IPI_MDP_INIT,
     37	SCP_IPI_MDP_DEINIT,
     38	SCP_IPI_MDP_FRAME,
     39	SCP_IPI_DIP,
     40	SCP_IPI_ISP_CMD,
     41	SCP_IPI_ISP_FRAME,
     42	SCP_IPI_FD_CMD,
     43	SCP_IPI_CROS_HOST_CMD,
     44	SCP_IPI_VDEC_LAT,
     45	SCP_IPI_VDEC_CORE,
     46	SCP_IPI_NS_SERVICE = 0xFF,
     47	SCP_IPI_MAX = 0x100,
     48};
     49
     50struct mtk_scp *scp_get(struct platform_device *pdev);
     51void scp_put(struct mtk_scp *scp);
     52
     53struct device *scp_get_device(struct mtk_scp *scp);
     54struct rproc *scp_get_rproc(struct mtk_scp *scp);
     55
     56int scp_ipi_register(struct mtk_scp *scp, u32 id, scp_ipi_handler_t handler,
     57		     void *priv);
     58void scp_ipi_unregister(struct mtk_scp *scp, u32 id);
     59
     60int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len,
     61		 unsigned int wait);
     62
     63unsigned int scp_get_vdec_hw_capa(struct mtk_scp *scp);
     64unsigned int scp_get_venc_hw_capa(struct mtk_scp *scp);
     65
     66void *scp_mapping_dm_addr(struct mtk_scp *scp, u32 mem_addr);
     67
     68#endif /* _MTK_SCP_H */