lima_vm.h (1539B)
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 4096 11#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 3 15#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 0x0FFF00000ULL 19#define LIMA_VA_RESERVE_DLBU LIMA_VA_RESERVE_START 20#define LIMA_VA_RESERVE_END 0x100000000ULL 21 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#endif