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
|
From 713485538f2f98590cd3e89ec10a8d9e77f304dc Mon Sep 17 00:00:00 2001
From: jqdeng <Emily.Deng@amd.com>
Date: Tue, 5 Jul 2016 15:43:37 +0800
Subject: [PATCH 078/117] amdgpu: Add interface amdgpu_get_fb_id
The amdgpu_get_fb_id is used to export the crtc's
framebuffer's buffer id to OpenGL driver for capturing
desktop to OpenGL texture. This is for linux rapidfire server.
Signed-off-by: jqdeng <Emily.Deng@amd.com>
Reviewed-by: Chunming Zhou <David1.Zhou@amd.com>
---
amdgpu/amdgpu-symbol-check | 1 +
amdgpu/amdgpu.h | 15 +++++++++++++++
amdgpu/amdgpu_bo.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 64 insertions(+)
diff --git a/amdgpu/amdgpu-symbol-check b/amdgpu/amdgpu-symbol-check
index 648db9b..e26ffe2 100755
--- a/amdgpu/amdgpu-symbol-check
+++ b/amdgpu/amdgpu-symbol-check
@@ -48,6 +48,7 @@ amdgpu_read_mm_registers
amdgpu_va_range_alloc
amdgpu_va_range_free
amdgpu_va_range_query
+amdgpu_get_fb_id
EOF
done)
diff --git a/amdgpu/amdgpu.h b/amdgpu/amdgpu.h
index d8c436f..0f31100 100644
--- a/amdgpu/amdgpu.h
+++ b/amdgpu/amdgpu.h
@@ -637,6 +637,21 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
struct amdgpu_bo_import_result *output);
/**
+ * Allow others to get access to crtc's framebuffer
+ *
+ * \param dev - \c [in] Device handle.
+ * See #amdgpu_device_initialize()
+ * \param fb_id - \c [out] the first crtc's framebuffer's buffer_id
+ *
+ * \return 0 on success\n
+ * <0 - Negative POSIX Error code
+ *
+ * \sa amdgpu_get_fb_id()
+ *
+*/
+int amdgpu_get_fb_id(amdgpu_device_handle dev, unsigned int *fb_id);
+
+/**
* Request GPU access to user allocated memory e.g. via "malloc"
*
* \param dev - [in] Device handle. See #amdgpu_device_initialize()
diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index c3f5fb9..49b951b 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -43,6 +43,7 @@
#include "amdgpu_internal.h"
#include "util_hash_table.h"
#include "util_math.h"
+#include "xf86drmMode.h"
static void amdgpu_close_kms_handle(amdgpu_device_handle dev,
uint32_t handle)
@@ -417,6 +418,53 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
return 0;
}
+/* Get the first use crtc's frame buffer's buffer_id. */
+int amdgpu_get_fb_id(amdgpu_device_handle dev, unsigned int *fb_id)
+{
+ drmModeResPtr mode_res;
+ int count_crtcs;
+ drmModeCrtcPtr mode_crtc;
+ int current_id = 0;
+ drmModeFBPtr fbcur;
+ struct drm_amdgpu_gem_create_in bo_info = {};
+ struct drm_amdgpu_gem_op gem_op = {};
+ int r = 0;
+ int i;
+ struct amdgpu_bo *bo = NULL;
+ int flag_auth = 0;
+ int fd = dev->fd;
+
+ amdgpu_get_auth(dev->fd, &flag_auth);
+ if (flag_auth) {
+ fd = dev->fd;
+ } else {
+ amdgpu_get_auth(dev->flink_fd, &flag_auth);
+ if (flag_auth) {
+ fd = dev->flink_fd;
+ } else {
+ fprintf(stderr, "amdgpu: amdgpu_get_fb_id, couldn't get the auth fd\n");
+ return EINVAL;
+ }
+ }
+
+ mode_res = drmModeGetResources(fd);
+ if (!mode_res)
+ return EFAULT;
+
+ count_crtcs = mode_res->count_crtcs;
+ for (i = 0; i < mode_res->count_crtcs; i++) {
+ mode_crtc = drmModeGetCrtc(fd, mode_res->crtcs[i]);
+ if (mode_crtc->buffer_id) {
+ current_id = mode_crtc->buffer_id;
+ if (current_id != NULL)
+ break;
+ }
+ }
+ *fb_id = current_id;
+
+ return r;
+}
+
int amdgpu_bo_free(amdgpu_bo_handle buf_handle)
{
/* Just drop the reference. */
--
2.7.4
|
