Release 4.17 drivers/gpu/drm/nouveau/include/nvif/mmu.h

#ifndef __NVIF_MMU_H__

#define __NVIF_MMU_H__
#include <nvif/object.h>


struct nvif_mmu {
	
struct nvif_object object;
	
u8  dmabits;
	
u8  heap_nr;
	
u8  type_nr;
	
u16 kind_nr;

	
struct {
		
u64 size;
	
} *heap;

	
struct {

#define NVIF_MEM_VRAM                                                      0x01

#define NVIF_MEM_HOST                                                      0x02

#define NVIF_MEM_COMP                                                      0x04

#define NVIF_MEM_DISP                                                      0x08

#define NVIF_MEM_KIND                                                      0x10

#define NVIF_MEM_MAPPABLE                                                  0x20

#define NVIF_MEM_COHERENT                                                  0x40

#define NVIF_MEM_UNCACHED                                                  0x80
		
u8 type;
		
u8 heap;
	
} *type;

	
u8 *kind;
};

int nvif_mmu_init(struct nvif_object *, s32 oclass, struct nvif_mmu *);
void nvif_mmu_fini(struct nvif_mmu *);


static inline bool

nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind)
{
	const u8 invalid = mmu->kind_nr - 1;
	if (kind) {
		if (kind >= mmu->kind_nr || mmu->kind[kind] == invalid)
			return false;
	}
	return true;
}

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static inline int

nvif_mmu_type(struct nvif_mmu *mmu, u8 mask)
{
	int i;
	for (i = 0; i < mmu->type_nr; i++) {
		if ((mmu->type[i].type & mask) == mask)
			return i;
	}
	return -EINVAL;
}
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#endif
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Directory: drivers/gpu/drm/nouveau/include/nvif

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