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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2020 Google, Inc
*/
#ifndef __ADRENO_SMMU_PRIV_H
#define __ADRENO_SMMU_PRIV_H
#include <linux/io-pgtable.h>
/**
* struct adreno_smmu_priv - private interface between adreno-smmu and GPU
*
* @cookie: An opque token provided by adreno-smmu and passed
* back into the callbacks
* @get_ttbr1_cfg: Get the TTBR1 config for the GPUs context-bank
* @set_ttbr0_cfg: Set the TTBR0 config for the GPUs context bank. A
* NULL config disables TTBR0 translation, otherwise
* TTBR0 translation is enabled with the specified cfg
*
* The GPU driver (drm/msm) and adreno-smmu work together for controlling
* the GPU's SMMU instance. This is by necessity, as the GPU is directly
* updating the SMMU for context switches, while on the other hand we do
* not want to duplicate all of the initial setup logic from arm-smmu.
*
* This private interface is used for the two drivers to coordinate. The
* cookie and callback functions are populated when the GPU driver attaches
* it's domain.
*/
struct adreno_smmu_priv {
const void *cookie;
const struct io_pgtable_cfg *(*get_ttbr1_cfg)(const void *cookie);
int (*set_ttbr0_cfg)(const void *cookie, const struct io_pgtable_cfg *cfg);
};
#endif /* __ADRENO_SMMU_PRIV_H */
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