1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
#include <gbm.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <wlr/util/log.h>
#include "backend/drm/drm.h"
#include "backend/drm/iface.h"
#include "backend/drm/util.h"
struct atomic {
drmModeAtomicReq *req;
int cursor;
bool failed;
};
static void atomic_begin(struct wlr_drm_crtc *crtc, struct atomic *atom) {
if (!crtc->atomic) {
crtc->atomic = drmModeAtomicAlloc();
if (!crtc->atomic) {
wlr_log_errno(L_ERROR, "Allocation failed");
atom->failed = true;
return;
}
}
atom->req = crtc->atomic;
atom->cursor = drmModeAtomicGetCursor(atom->req);
atom->failed = false;
}
static bool atomic_end(int drm_fd, struct atomic *atom) {
if (atom->failed) {
return false;
}
uint32_t flags = DRM_MODE_ATOMIC_TEST_ONLY | DRM_MODE_ATOMIC_NONBLOCK;
if (drmModeAtomicCommit(drm_fd, atom->req, flags, NULL)) {
wlr_log_errno(L_ERROR, "Atomic test failed");
drmModeAtomicSetCursor(atom->req, atom->cursor);
return false;
}
return true;
}
static bool atomic_commit(int drm_fd, struct atomic *atom,
struct wlr_drm_connector *conn, uint32_t flag, bool modeset) {
if (atom->failed) {
return false;
}
uint32_t flags = DRM_MODE_PAGE_FLIP_EVENT | flag;
int ret = drmModeAtomicCommit(drm_fd, atom->req, flags, conn);
if (ret) {
wlr_log_errno(L_ERROR, "%s: Atomic commit failed (%s)",
conn->output.name, modeset ? "modeset" : "pageflip");
// Try to commit without new changes
drmModeAtomicSetCursor(atom->req, atom->cursor);
if (drmModeAtomicCommit(drm_fd, atom->req, flags, conn)) {
wlr_log_errno(L_ERROR, "%s: Atomic commit failed (%s)",
conn->output.name, modeset ? "modeset" : "pageflip");
}
}
drmModeAtomicSetCursor(atom->req, 0);
return !ret;
}
static inline void atomic_add(struct atomic *atom, uint32_t id, uint32_t prop, uint64_t val) {
if (!atom->failed && drmModeAtomicAddProperty(atom->req, id, prop, val) < 0) {
wlr_log_errno(L_ERROR, "Failed to add atomic DRM property");
atom->failed = true;
}
}
static void set_plane_props(struct atomic *atom, struct wlr_drm_plane *plane,
uint32_t crtc_id, uint32_t fb_id, bool set_crtc_xy) {
uint32_t id = plane->id;
const union wlr_drm_plane_props *props = &plane->props;
// The src_* properties are in 16.16 fixed point
atomic_add(atom, id, props->src_x, 0);
atomic_add(atom, id, props->src_y, 0);
atomic_add(atom, id, props->src_w, plane->surf.width << 16);
atomic_add(atom, id, props->src_h, plane->surf.height << 16);
atomic_add(atom, id, props->crtc_w, plane->surf.width);
atomic_add(atom, id, props->crtc_h, plane->surf.height);
atomic_add(atom, id, props->fb_id, fb_id);
atomic_add(atom, id, props->crtc_id, crtc_id);
if (set_crtc_xy) {
atomic_add(atom, id, props->crtc_x, 0);
atomic_add(atom, id, props->crtc_y, 0);
}
}
static bool atomic_crtc_pageflip(struct wlr_drm_backend *drm,
struct wlr_drm_connector *conn,
struct wlr_drm_crtc *crtc,
uint32_t fb_id, drmModeModeInfo *mode) {
if (mode) {
if (crtc->mode_id) {
drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
}
if (drmModeCreatePropertyBlob(drm->fd, mode, sizeof(*mode), &crtc->mode_id)) {
wlr_log_errno(L_ERROR, "Unable to create property blob");
return false;
}
}
struct atomic atom;
atomic_begin(crtc, &atom);
atomic_add(&atom, conn->id, conn->props.crtc_id, crtc->id);
atomic_add(&atom, crtc->id, crtc->props.mode_id, crtc->mode_id);
atomic_add(&atom, crtc->id, crtc->props.active, 1);
set_plane_props(&atom, crtc->primary, crtc->id, fb_id, true);
return atomic_commit(drm->fd, &atom, conn,
mode ? DRM_MODE_ATOMIC_ALLOW_MODESET : DRM_MODE_ATOMIC_NONBLOCK,
mode);
}
static void atomic_conn_enable(struct wlr_drm_backend *drm,
struct wlr_drm_connector *conn, bool enable) {
struct wlr_drm_crtc *crtc = conn->crtc;
struct atomic atom;
atomic_begin(crtc, &atom);
atomic_add(&atom, crtc->id, crtc->props.active, enable);
atomic_end(drm->fd, &atom);
}
bool legacy_crtc_set_cursor(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, struct gbm_bo *bo);
static bool atomic_crtc_set_cursor(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, struct gbm_bo *bo) {
if (!crtc || !crtc->cursor) {
return true;
}
struct wlr_drm_plane *plane = crtc->cursor;
// We can't use atomic operations on fake planes
if (plane->id == 0) {
return legacy_crtc_set_cursor(drm, crtc, bo);
}
struct atomic atom;
atomic_begin(crtc, &atom);
if (bo) {
set_plane_props(&atom, plane, crtc->id, get_fb_for_bo(bo), false);
} else {
atomic_add(&atom, plane->id, plane->props.fb_id, 0);
atomic_add(&atom, plane->id, plane->props.crtc_id, 0);
}
return atomic_end(drm->fd, &atom);
}
bool legacy_crtc_move_cursor(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, int x, int y);
static bool atomic_crtc_move_cursor(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, int x, int y) {
if (!crtc || !crtc->cursor) {
return true;
}
struct wlr_drm_plane *plane = crtc->cursor;
// We can't use atomic operations on fake planes
if (plane->id == 0) {
return legacy_crtc_move_cursor(drm, crtc, x, y);
}
struct atomic atom;
atomic_begin(crtc, &atom);
atomic_add(&atom, plane->id, plane->props.crtc_x, x);
atomic_add(&atom, plane->id, plane->props.crtc_y, y);
return atomic_end(drm->fd, &atom);
}
const struct wlr_drm_interface atomic_iface = {
.conn_enable = atomic_conn_enable,
.crtc_pageflip = atomic_crtc_pageflip,
.crtc_set_cursor = atomic_crtc_set_cursor,
.crtc_move_cursor = atomic_crtc_move_cursor,
};
|
