[mirror_ubuntu-jammy-kernel.git] / include / linux / adreno-smmu-priv.h

// 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 */
Commit	Line	Data
2fc7b156 RC	1	// SPDX-License-Identifier: GPL-2.0-only
	2	/*
	3	* Copyright (C) 2020 Google, Inc
	4	*/
	5
	6	#ifndef __ADRENO_SMMU_PRIV_H
	7	#define __ADRENO_SMMU_PRIV_H
	8
	9	#include <linux/io-pgtable.h>
	10
	11	/**
	12	* struct adreno_smmu_priv - private interface between adreno-smmu and GPU
	13	*
	14	* @cookie: An opque token provided by adreno-smmu and passed
	15	* back into the callbacks
	16	* @get_ttbr1_cfg: Get the TTBR1 config for the GPUs context-bank
	17	* @set_ttbr0_cfg: Set the TTBR0 config for the GPUs context bank. A
	18	* NULL config disables TTBR0 translation, otherwise
	19	* TTBR0 translation is enabled with the specified cfg
	20	*
	21	* The GPU driver (drm/msm) and adreno-smmu work together for controlling
	22	* the GPU's SMMU instance. This is by necessity, as the GPU is directly
	23	* updating the SMMU for context switches, while on the other hand we do
	24	* not want to duplicate all of the initial setup logic from arm-smmu.
	25	*
	26	* This private interface is used for the two drivers to coordinate. The
	27	* cookie and callback functions are populated when the GPU driver attaches
	28	* it's domain.
	29	*/
	30	struct adreno_smmu_priv {
	31	const void *cookie;
	32	const struct io_pgtable_cfg (get_ttbr1_cfg)(const void *cookie);
	33	int (set_ttbr0_cfg)(const void cookie, const struct io_pgtable_cfg *cfg);
	34	};
	35
	36	#endif /* __ADRENO_SMMU_PRIV_H */