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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "msm_drv.h"
#include "msm_kms.h"
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
struct msm_framebuffer {
struct drm_framebuffer base;
const struct msm_format *format;
struct drm_gem_object *planes[MAX_PLANE];
};
#define to_msm_framebuffer(x) container_of(x, struct msm_framebuffer, base)
static int msm_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
return drm_gem_handle_create(file_priv,
msm_fb->planes[0], handle);
}
static void msm_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
int i, n = drm_format_num_planes(fb->pixel_format);
DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
drm_framebuffer_cleanup(fb);
for (i = 0; i < n; i++) {
struct drm_gem_object *bo = msm_fb->planes[i];
if (bo)
drm_gem_object_unreference_unlocked(bo);
}
kfree(msm_fb);
}
static int msm_framebuffer_dirty(struct drm_framebuffer *fb,
struct drm_file *file_priv, unsigned flags, unsigned color,
struct drm_clip_rect *clips, unsigned num_clips)
{
return 0;
}
static const struct drm_framebuffer_funcs msm_framebuffer_funcs = {
.create_handle = msm_framebuffer_create_handle,
.destroy = msm_framebuffer_destroy,
.dirty = msm_framebuffer_dirty,
};
#ifdef CONFIG_DEBUG_FS
void msm_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
int i, n = drm_format_num_planes(fb->pixel_format);
seq_printf(m, "fb: %dx%d@%4.4s (%2d, ID:%d)\n",
fb->width, fb->height, (char *)&fb->pixel_format,
drm_framebuffer_read_refcount(fb), fb->base.id);
for (i = 0; i < n; i++) {
seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
i, fb->offsets[i], fb->pitches[i]);
msm_gem_describe(msm_fb->planes[i], m);
}
}
#endif
/* prepare/pin all the fb's bo's for scanout. Note that it is not valid
* to prepare an fb more multiple different initiator 'id's. But that
* should be fine, since only the scanout (mdpN) side of things needs
* this, the gpu doesn't care about fb's.
*/
int msm_framebuffer_prepare(struct drm_framebuffer *fb, int id)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
int ret, i, n = drm_format_num_planes(fb->pixel_format);
uint32_t iova;
for (i = 0; i < n; i++) {
ret = msm_gem_get_iova(msm_fb->planes[i], id, &iova);
DBG("FB[%u]: iova[%d]: %08x (%d)", fb->base.id, i, iova, ret);
if (ret)
return ret;
}
return 0;
}
void msm_framebuffer_cleanup(struct drm_framebuffer *fb, int id)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
int i, n = drm_format_num_planes(fb->pixel_format);
for (i = 0; i < n; i++)
msm_gem_put_iova(msm_fb->planes[i], id);
}
uint32_t msm_framebuffer_iova(struct drm_framebuffer *fb, int id, int plane)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
if (!msm_fb->planes[plane])
return 0;
return msm_gem_iova(msm_fb->planes[plane], id) + fb->offsets[plane];
}
struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
return msm_fb->planes[plane];
}
const struct msm_format *msm_framebuffer_format(struct drm_framebuffer *fb)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
return msm_fb->format;
}
struct drm_framebuffer *msm_framebuffer_create(struct drm_device *dev,
struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_gem_object *bos[4] = {0};
struct drm_framebuffer *fb;
int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
for (i = 0; i < n; i++) {
bos[i] = drm_gem_object_lookup(file, mode_cmd->handles[i]);
if (!bos[i]) {
ret = -ENXIO;
goto out_unref;
}
}
fb = msm_framebuffer_init(dev, mode_cmd, bos);
if (IS_ERR(fb)) {
ret = PTR_ERR(fb);
goto out_unref;
}
return fb;
out_unref:
for (i = 0; i < n; i++)
drm_gem_object_unreference_unlocked(bos[i]);
return ERR_PTR(ret);
}
struct drm_framebuffer *msm_framebuffer_init(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
struct msm_framebuffer *msm_fb = NULL;
struct drm_framebuffer *fb;
const struct msm_format *format;
int ret, i, n;
unsigned int hsub, vsub;
DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
dev, mode_cmd, mode_cmd->width, mode_cmd->height,
(char *)&mode_cmd->pixel_format);
n = drm_format_num_planes(mode_cmd->pixel_format);
hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
format = kms->funcs->get_format(kms, mode_cmd->pixel_format);
if (!format) {
dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
(char *)&mode_cmd->pixel_format);
ret = -EINVAL;
goto fail;
}
msm_fb = kzalloc(sizeof(*msm_fb), GFP_KERNEL);
if (!msm_fb) {
ret = -ENOMEM;
goto fail;
}
fb = &msm_fb->base;
msm_fb->format = format;
if (n > ARRAY_SIZE(msm_fb->planes)) {
ret = -EINVAL;
goto fail;
}
for (i = 0; i < n; i++) {
unsigned int width = mode_cmd->width / (i ? hsub : 1);
unsigned int height = mode_cmd->height / (i ? vsub : 1);
unsigned int min_size;
min_size = (height - 1) * mode_cmd->pitches[i]
+ width * drm_format_plane_cpp(mode_cmd->pixel_format, i)
+ mode_cmd->offsets[i];
if (bos[i]->size < min_size) {
ret = -EINVAL;
goto fail;
}
msm_fb->planes[i] = bos[i];
}
drm_helper_mode_fill_fb_struct(fb, mode_cmd);
ret = drm_framebuffer_init(dev, fb, &msm_framebuffer_funcs);
if (ret) {
dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
goto fail;
}
DBG("create: FB ID: %d (%p)", fb->base.id, fb);
return fb;
fail:
kfree(msm_fb);
return ERR_PTR(ret);
}
|
