tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0+ */
2
3#ifndef _VKMS_DRV_H_
4#define _VKMS_DRV_H_
5
6#include <linux/hrtimer.h>
7
8#include <drm/drm.h>
9#include <drm/drm_gem.h>
10#include <drm/drm_encoder.h>
11
12#define XRES_MIN 20
13#define YRES_MIN 20
14
15#define XRES_DEF 1024
16#define YRES_DEF 768
17
18#define XRES_MAX 8192
19#define YRES_MAX 8192
20
21extern bool enable_cursor;
22
23struct vkms_composer {
24 struct drm_framebuffer fb;
25 struct drm_rect src, dst;
26 unsigned int offset;
27 unsigned int pitch;
28 unsigned int cpp;
29};
30
31/**
32 * vkms_plane_state - Driver specific plane state
33 * @base: base plane state
34 * @composer: data required for composing computation
35 */
36struct vkms_plane_state {
37 struct drm_plane_state base;
38 struct vkms_composer *composer;
39};
40
41/**
42 * vkms_crtc_state - Driver specific CRTC state
43 * @base: base CRTC state
44 * @composer_work: work struct to compose and add CRC entries
45 * @n_frame_start: start frame number for computed CRC
46 * @n_frame_end: end frame number for computed CRC
47 */
48struct vkms_crtc_state {
49 struct drm_crtc_state base;
50 struct work_struct composer_work;
51
52 int num_active_planes;
53 /* stack of active planes for crc computation, should be in z order */
54 struct vkms_plane_state **active_planes;
55
56 /* below three are protected by vkms_output.composer_lock */
57 bool crc_pending;
58 u64 frame_start;
59 u64 frame_end;
60};
61
62struct vkms_output {
63 struct drm_crtc crtc;
64 struct drm_encoder encoder;
65 struct drm_connector connector;
66 struct hrtimer vblank_hrtimer;
67 ktime_t period_ns;
68 struct drm_pending_vblank_event *event;
69 /* ordered wq for composer_work */
70 struct workqueue_struct *composer_workq;
71 /* protects concurrent access to composer */
72 spinlock_t lock;
73
74 /* protected by @lock */
75 bool composer_enabled;
76 struct vkms_crtc_state *composer_state;
77
78 spinlock_t composer_lock;
79};
80
81struct vkms_device {
82 struct drm_device drm;
83 struct platform_device *platform;
84 struct vkms_output output;
85};
86
87struct vkms_gem_object {
88 struct drm_gem_object gem;
89 struct mutex pages_lock; /* Page lock used in page fault handler */
90 struct page **pages;
91 unsigned int vmap_count;
92 void *vaddr;
93};
94
95#define drm_crtc_to_vkms_output(target) \
96 container_of(target, struct vkms_output, crtc)
97
98#define drm_device_to_vkms_device(target) \
99 container_of(target, struct vkms_device, drm)
100
101#define drm_gem_to_vkms_gem(target)\
102 container_of(target, struct vkms_gem_object, gem)
103
104#define to_vkms_crtc_state(target)\
105 container_of(target, struct vkms_crtc_state, base)
106
107#define to_vkms_plane_state(target)\
108 container_of(target, struct vkms_plane_state, base)
109
110/* CRTC */
111int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
112 struct drm_plane *primary, struct drm_plane *cursor);
113
114bool vkms_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
115 int *max_error, ktime_t *vblank_time,
116 bool in_vblank_irq);
117
118int vkms_output_init(struct vkms_device *vkmsdev, int index);
119
120struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev,
121 enum drm_plane_type type, int index);
122
123/* Gem stuff */
124struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
125 struct drm_file *file,
126 u32 *handle,
127 u64 size);
128
129vm_fault_t vkms_gem_fault(struct vm_fault *vmf);
130
131int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
132 struct drm_mode_create_dumb *args);
133
134void vkms_gem_free_object(struct drm_gem_object *obj);
135
136int vkms_gem_vmap(struct drm_gem_object *obj);
137
138void vkms_gem_vunmap(struct drm_gem_object *obj);
139
140/* Prime */
141struct drm_gem_object *
142vkms_prime_import_sg_table(struct drm_device *dev,
143 struct dma_buf_attachment *attach,
144 struct sg_table *sg);
145
146/* CRC Support */
147const char *const *vkms_get_crc_sources(struct drm_crtc *crtc,
148 size_t *count);
149int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name);
150int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
151 size_t *values_cnt);
152
153/* Composer Support */
154void vkms_composer_worker(struct work_struct *work);
155
156#endif /* _VKMS_DRV_H_ */