| /* 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) |
| { |
| kref_put(&vm->refcount, lima_vm_release); |
| } |
| |
| void lima_vm_print(struct lima_vm *vm); |
| |
| #endif |