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1/* SPDX-License-Identifier: GPL-2.0 OR MIT */2/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */3 4#ifndef __LIMA_VM_H__5#define __LIMA_VM_H__6 7#include <drm/drm_mm.h>8#include <linux/kref.h>9 10#define LIMA_PAGE_SIZE 409611#define LIMA_PAGE_MASK (LIMA_PAGE_SIZE - 1)12#define LIMA_PAGE_ENT_NUM (LIMA_PAGE_SIZE / sizeof(u32))13 14#define LIMA_VM_NUM_PT_PER_BT_SHIFT 315#define LIMA_VM_NUM_PT_PER_BT (1 << LIMA_VM_NUM_PT_PER_BT_SHIFT)16#define LIMA_VM_NUM_BT (LIMA_PAGE_ENT_NUM >> LIMA_VM_NUM_PT_PER_BT_SHIFT)17 18#define LIMA_VA_RESERVE_START 0x0FFF00000ULL19#define LIMA_VA_RESERVE_DLBU LIMA_VA_RESERVE_START20#define LIMA_VA_RESERVE_END 0x100000000ULL21 22struct lima_device;23 24struct lima_vm_page {25 u32 *cpu;26 dma_addr_t dma;27};28 29struct lima_vm {30 struct mutex lock;31 struct kref refcount;32 33 struct drm_mm mm;34 35 struct lima_device *dev;36 37 struct lima_vm_page pd;38 struct lima_vm_page bts[LIMA_VM_NUM_BT];39};40 41int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create);42void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo);43 44u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo);45 46struct lima_vm *lima_vm_create(struct lima_device *dev);47void lima_vm_release(struct kref *kref);48 49static inline struct lima_vm *lima_vm_get(struct lima_vm *vm)50{51 kref_get(&vm->refcount);52 return vm;53}54 55static inline void lima_vm_put(struct lima_vm *vm)56{57 if (vm)58 kref_put(&vm->refcount, lima_vm_release);59}60 61void lima_vm_print(struct lima_vm *vm);62int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff);63 64#endif65