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

 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	kref_put(&vm->refcount, lima_vm_release);
 
58}
59
60void lima_vm_print(struct lima_vm *vm);
 
61
62#endif