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 <drm/drmP.h>
7#include <drm/drm.h>
8#include <drm/drm_gem.h>
9#include <drm/drm_encoder.h>
10#include <linux/hrtimer.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
23static const u32 vkms_formats[] = {
24 DRM_FORMAT_XRGB8888,
25};
26
27static const u32 vkms_cursor_formats[] = {
28 DRM_FORMAT_ARGB8888,
29};
30
31struct vkms_crc_data {
32 struct drm_framebuffer fb;
33 struct drm_rect src, dst;
34 unsigned int offset;
35 unsigned int pitch;
36 unsigned int cpp;
37};
38
39/**
40 * vkms_plane_state - Driver specific plane state
41 * @base: base plane state
42 * @crc_data: data required for CRC computation
43 */
44struct vkms_plane_state {
45 struct drm_plane_state base;
46 struct vkms_crc_data *crc_data;
47};
48
49/**
50 * vkms_crtc_state - Driver specific CRTC state
51 * @base: base CRTC state
52 * @crc_work: work struct to compute and add CRC entries
53 * @n_frame_start: start frame number for computed CRC
54 * @n_frame_end: end frame number for computed CRC
55 */
56struct vkms_crtc_state {
57 struct drm_crtc_state base;
58 struct work_struct crc_work;
59 u64 frame_start;
60 u64 frame_end;
61};
62
63struct vkms_output {
64 struct drm_crtc crtc;
65 struct drm_encoder encoder;
66 struct drm_connector connector;
67 struct hrtimer vblank_hrtimer;
68 ktime_t period_ns;
69 struct drm_pending_vblank_event *event;
70 bool crc_enabled;
71 /* ordered wq for crc_work */
72 struct workqueue_struct *crc_workq;
73 /* protects concurrent access to crc_data */
74 spinlock_t lock;
75 /* protects concurrent access to crtc_state */
76 spinlock_t state_lock;
77};
78
79struct vkms_device {
80 struct drm_device drm;
81 struct platform_device *platform;
82 struct vkms_output output;
83};
84
85struct vkms_gem_object {
86 struct drm_gem_object gem;
87 struct mutex pages_lock; /* Page lock used in page fault handler */
88 struct page **pages;
89 unsigned int vmap_count;
90 void *vaddr;
91};
92
93#define drm_crtc_to_vkms_output(target) \
94 container_of(target, struct vkms_output, crtc)
95
96#define drm_device_to_vkms_device(target) \
97 container_of(target, struct vkms_device, drm)
98
99#define drm_gem_to_vkms_gem(target)\
100 container_of(target, struct vkms_gem_object, gem)
101
102#define to_vkms_crtc_state(target)\
103 container_of(target, struct vkms_crtc_state, base)
104
105#define to_vkms_plane_state(target)\
106 container_of(target, struct vkms_plane_state, base)
107
108/* CRTC */
109int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
110 struct drm_plane *primary, struct drm_plane *cursor);
111
112bool vkms_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
113 int *max_error, ktime_t *vblank_time,
114 bool in_vblank_irq);
115
116int vkms_output_init(struct vkms_device *vkmsdev);
117
118struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev,
119 enum drm_plane_type type);
120
121/* Gem stuff */
122struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
123 struct drm_file *file,
124 u32 *handle,
125 u64 size);
126
127vm_fault_t vkms_gem_fault(struct vm_fault *vmf);
128
129int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
130 struct drm_mode_create_dumb *args);
131
132void vkms_gem_free_object(struct drm_gem_object *obj);
133
134int vkms_gem_vmap(struct drm_gem_object *obj);
135
136void vkms_gem_vunmap(struct drm_gem_object *obj);
137
138/* CRC Support */
139int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name);
140int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
141 size_t *values_cnt);
142void vkms_crc_work_handle(struct work_struct *work);
143
144#endif /* _VKMS_DRV_H_ */