/* SPDX-License-Identifier: GPL-2.0 OR MIT */ /* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */ #ifndef __LIMA_VM_H__ #define __LIMA_VM_H__ #include <drm/drm_mm.h> #include <linux/kref.h> #define LIMA_PAGE_SIZE 4096 #define LIMA_PAGE_MASK (LIMA_PAGE_SIZE - 1) #define LIMA_PAGE_ENT_NUM (LIMA_PAGE_SIZE / sizeof(u32)) #define LIMA_VM_NUM_PT_PER_BT_SHIFT 3 #define LIMA_VM_NUM_PT_PER_BT (1 << LIMA_VM_NUM_PT_PER_BT_SHIFT) #define LIMA_VM_NUM_BT (LIMA_PAGE_ENT_NUM >> LIMA_VM_NUM_PT_PER_BT_SHIFT) #define LIMA_VA_RESERVE_START 0x0FFF00000ULL #define LIMA_VA_RESERVE_DLBU LIMA_VA_RESERVE_START #define LIMA_VA_RESERVE_END 0x100000000ULL struct lima_device; struct lima_vm_page { u32 *cpu; dma_addr_t dma; }; struct lima_vm { struct mutex lock; struct kref refcount; struct drm_mm mm; struct lima_device *dev; struct lima_vm_page pd; struct lima_vm_page bts[LIMA_VM_NUM_BT]; }; int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create); void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo); u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo); struct lima_vm *lima_vm_create(struct lima_device *dev); void lima_vm_release(struct kref *kref); static inline struct lima_vm *lima_vm_get(struct lima_vm *vm) { kref_get(&vm->refcount); return vm; } static inline void lima_vm_put(struct lima_vm *vm) { if (vm) kref_put(&vm->refcount, lima_vm_release); } void lima_vm_print(struct lima_vm *vm); int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff); #endif