[linux-2.6-block.git] / drivers / gpu / drm / msm / msm_mmu.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 */

#ifndef __MSM_MMU_H__
#define __MSM_MMU_H__

#include <linux/iommu.h>

struct msm_mmu_funcs {
	void (*detach)(struct msm_mmu *mmu);
	int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
			size_t len, int prot);
	int (*unmap)(struct msm_mmu *mmu, uint64_t iova, size_t len);
	void (*destroy)(struct msm_mmu *mmu);
	void (*resume_translation)(struct msm_mmu *mmu);
};

enum msm_mmu_type {
	MSM_MMU_GPUMMU,
	MSM_MMU_IOMMU,
	MSM_MMU_IOMMU_PAGETABLE,
};

struct msm_mmu {
	const struct msm_mmu_funcs *funcs;
	struct device *dev;
	int (*handler)(void *arg, unsigned long iova, int flags, void *data);
	void *arg;
	enum msm_mmu_type type;
};

static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
		const struct msm_mmu_funcs *funcs, enum msm_mmu_type type)
{
	mmu->dev = dev;
	mmu->funcs = funcs;
	mmu->type = type;
}

struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks);
struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsigned long quirks);

static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
		int (*handler)(void *arg, unsigned long iova, int flags, void *data))
{
	mmu->arg = arg;
	mmu->handler = handler;
}

struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent);

int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
		int *asid);
struct iommu_domain_geometry *msm_iommu_get_geometry(struct msm_mmu *mmu);

#endif /* __MSM_MMU_H__ */
Commit	Line	Data
caab277b	1	/* SPDX-License-Identifier: GPL-2.0-only */
871d812a RC	2	/*
	3	* Copyright (C) 2013 Red Hat
	4	* Author: Rob Clark <robdclark@gmail.com>
871d812a RC	5	*/
	6
	7	#ifndef __MSM_MMU_H__
	8	#define __MSM_MMU_H__
	9
	10	#include <linux/iommu.h>
	11
	12	struct msm_mmu_funcs {
53bf7f7a	13	void (detach)(struct msm_mmu mmu);
78babc16	14	int (map)(struct msm_mmu mmu, uint64_t iova, struct sg_table *sgt,
fb212ad6 JC	15	size_t len, int prot);
fb212ad6 JC	16	int (unmap)(struct msm_mmu mmu, uint64_t iova, size_t len);
871d812a	17	void (destroy)(struct msm_mmu mmu);
e25e92e0	18	void (resume_translation)(struct msm_mmu mmu);
871d812a RC	19	};
871d812a RC	20
b145c6e6 JC	21	enum msm_mmu_type {
	22	MSM_MMU_GPUMMU,
	23	MSM_MMU_IOMMU,
	24	MSM_MMU_IOMMU_PAGETABLE,
	25	};
	26
871d812a RC	27	struct msm_mmu {
871d812a RC	28	const struct msm_mmu_funcs *funcs;
944fc36c	29	struct device *dev;
2a574cc0	30	int (handler)(void arg, unsigned long iova, int flags, void *data);
7f8036b7	31	void *arg;
b145c6e6	32	enum msm_mmu_type type;
871d812a RC	33	};
871d812a RC	34
944fc36c	35	static inline void msm_mmu_init(struct msm_mmu mmu, struct device dev,
b145c6e6	36	const struct msm_mmu_funcs *funcs, enum msm_mmu_type type)
871d812a RC	37	{
	38	mmu->dev = dev;
	39	mmu->funcs = funcs;
b145c6e6	40	mmu->type = type;
871d812a RC	41	}
871d812a RC	42
3236130b	43	struct msm_mmu msm_iommu_new(struct device dev, unsigned long quirks);
8cceb773	44	struct msm_mmu msm_iommu_gpu_new(struct device dev, struct msm_gpu *gpu, unsigned long quirks);
871d812a	45
7f8036b7	46	static inline void msm_mmu_set_fault_handler(struct msm_mmu mmu, void arg,
2a574cc0	47	int (handler)(void arg, unsigned long iova, int flags, void *data))
7f8036b7 RC	48	{
	49	mmu->arg = arg;
	50	mmu->handler = handler;
	51	}
	52
b145c6e6 JC	53	struct msm_mmu msm_iommu_pagetable_create(struct msm_mmu parent);
b145c6e6 JC	54
b145c6e6 JC	55	int msm_iommu_pagetable_params(struct msm_mmu mmu, phys_addr_t ttbr,
b145c6e6 JC	56	int *asid);
3236130b	57	struct iommu_domain_geometry msm_iommu_get_geometry(struct msm_mmu mmu);
b145c6e6	58
871d812a	59	#endif /* __MSM_MMU_H__ */