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
|
From 30da7e6ac1682b5de547686369d1b8199c6929c3 Mon Sep 17 00:00:00 2001
From: Junwei Zhang <Jerry.Zhang@amd.com>
Date: Wed, 19 Aug 2015 17:39:37 +0800
Subject: [PATCH 026/117] amdgpu: add the interface of waiting multiple fences
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
---
amdgpu/amdgpu.h | 22 +++++++++++++++
amdgpu/amdgpu_cs.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++
include/drm/amdgpu_drm.h | 27 ++++++++++++++++++
3 files changed, 121 insertions(+)
diff --git a/amdgpu/amdgpu.h b/amdgpu/amdgpu.h
index 0851306..8822a0c 100644
--- a/amdgpu/amdgpu.h
+++ b/amdgpu/amdgpu.h
@@ -907,6 +907,28 @@ int amdgpu_cs_query_fence_status(struct amdgpu_cs_fence *fence,
uint64_t flags,
uint32_t *expired);
+/**
+ * Wait for multiple fences
+ *
+ * \param fences - \c [in] The fence array to wait
+ * \param fence_count - \c [in] The fence count
+ * \param wait_all - \c [in] If true, wait all fences to be signaled,
+ * otherwise, wait at least one fence
+ * \param timeout_ns - \c [in] The timeout to wait, in nanoseconds
+ * \param status - \c [out] '1' for signaled, '0' for timeout
+ *
+ * \return 0 on success
+ * <0 - Negative POSIX Error code
+ *
+ * \note Currently it supports only one amdgpu_device. All fences come from
+ * the same amdgpu_device with the same fd.
+*/
+int amdgpu_cs_wait_fences(struct amdgpu_cs_fence *fences,
+ uint32_t fence_count,
+ bool wait_all,
+ uint64_t timeout_ns,
+ uint32_t *status);
+
/*
* Query / Info API
*
diff --git a/amdgpu/amdgpu_cs.c b/amdgpu/amdgpu_cs.c
index b4f41b0..896352b 100644
--- a/amdgpu/amdgpu_cs.c
+++ b/amdgpu/amdgpu_cs.c
@@ -435,6 +435,78 @@ int amdgpu_cs_query_fence_status(struct amdgpu_cs_fence *fence,
return r;
}
+static int amdgpu_ioctl_wait_fences(struct amdgpu_cs_fence *fences,
+ uint32_t fence_count,
+ bool wait_all,
+ uint64_t timeout_ns,
+ uint32_t *status)
+{
+ struct drm_amdgpu_fence *drm_fences;
+ amdgpu_device_handle dev = fences[0].context->dev;
+ union drm_amdgpu_wait_fences args;
+ int r;
+ uint32_t i;
+
+ drm_fences = alloca(sizeof(struct drm_amdgpu_fence) * fence_count);
+ for (i = 0; i < fence_count; i++) {
+ drm_fences[i].ctx_id = fences[i].context->id;
+ drm_fences[i].ip_type = fences[i].ip_type;
+ drm_fences[i].ip_instance = fences[i].ip_instance;
+ drm_fences[i].ring = fences[i].ring;
+ drm_fences[i].seq_no = fences[i].fence;
+ }
+
+ memset(&args, 0, sizeof(args));
+ args.in.fences = (uint64_t)(uintptr_t)drm_fences;
+ args.in.fence_count = fence_count;
+ args.in.wait_all = wait_all;
+ args.in.timeout_ns = amdgpu_cs_calculate_timeout(timeout_ns);
+
+ r = drmIoctl(dev->fd, DRM_IOCTL_AMDGPU_WAIT_FENCES, &args);
+ if (r)
+ return -errno;
+
+ *status = args.out.status;
+ return 0;
+}
+
+int amdgpu_cs_wait_fences(struct amdgpu_cs_fence *fences,
+ uint32_t fence_count,
+ bool wait_all,
+ uint64_t timeout_ns,
+ uint32_t *status)
+{
+ uint32_t ioctl_status = 0;
+ uint32_t i;
+ int r;
+
+ /* Sanity check */
+ if (NULL == fences)
+ return -EINVAL;
+ if (NULL == status)
+ return -EINVAL;
+ if (fence_count <= 0)
+ return -EINVAL;
+ for (i = 0; i < fence_count; i++) {
+ if (NULL == fences[i].context)
+ return -EINVAL;
+ if (fences[i].ip_type >= AMDGPU_HW_IP_NUM)
+ return -EINVAL;
+ if (fences[i].ring >= AMDGPU_CS_MAX_RINGS)
+ return -EINVAL;
+ }
+
+ *status = 0;
+
+ r = amdgpu_ioctl_wait_fences(fences, fence_count, wait_all, timeout_ns,
+ &ioctl_status);
+
+ if (!r)
+ *status = ioctl_status;
+
+ return r;
+}
+
int amdgpu_cs_create_semaphore(amdgpu_semaphore_handle *sem)
{
struct amdgpu_semaphore *gpu_semaphore;
diff --git a/include/drm/amdgpu_drm.h b/include/drm/amdgpu_drm.h
index fbdd118..2cbea72 100644
--- a/include/drm/amdgpu_drm.h
+++ b/include/drm/amdgpu_drm.h
@@ -46,6 +46,7 @@
#define DRM_AMDGPU_WAIT_CS 0x09
#define DRM_AMDGPU_GEM_OP 0x10
#define DRM_AMDGPU_GEM_USERPTR 0x11
+#define DRM_AMDGPU_WAIT_FENCES 0x12
#define DRM_IOCTL_AMDGPU_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_CREATE, union drm_amdgpu_gem_create)
#define DRM_IOCTL_AMDGPU_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_MMAP, union drm_amdgpu_gem_mmap)
@@ -59,6 +60,7 @@
#define DRM_IOCTL_AMDGPU_WAIT_CS DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_WAIT_CS, union drm_amdgpu_wait_cs)
#define DRM_IOCTL_AMDGPU_GEM_OP DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_OP, struct drm_amdgpu_gem_op)
#define DRM_IOCTL_AMDGPU_GEM_USERPTR DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_USERPTR, struct drm_amdgpu_gem_userptr)
+#define DRM_IOCTL_AMDGPU_WAIT_FENCES DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_WAIT_FENCES, union drm_amdgpu_wait_fences)
#define AMDGPU_GEM_DOMAIN_CPU 0x1
#define AMDGPU_GEM_DOMAIN_GTT 0x2
@@ -297,6 +299,31 @@ union drm_amdgpu_wait_cs {
struct drm_amdgpu_wait_cs_out out;
};
+struct drm_amdgpu_fence {
+ uint32_t ctx_id;
+ uint32_t ip_type;
+ uint32_t ip_instance;
+ uint32_t ring;
+ uint64_t seq_no;
+};
+
+struct drm_amdgpu_wait_fences_in {
+ /** This points to uint64_t * which points to fences */
+ uint64_t fences;
+ uint32_t fence_count;
+ uint32_t wait_all;
+ uint64_t timeout_ns;
+};
+
+struct drm_amdgpu_wait_fences_out {
+ uint64_t status;
+};
+
+union drm_amdgpu_wait_fences {
+ struct drm_amdgpu_wait_fences_in in;
+ struct drm_amdgpu_wait_fences_out out;
+};
+
#define AMDGPU_GEM_OP_GET_GEM_CREATE_INFO 0
#define AMDGPU_GEM_OP_SET_PLACEMENT 1
--
2.7.4
|
