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
|
/*
* 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/>.
*/
#ifndef __MSM_DRM_H__
#define __MSM_DRM_H__
#include "drm.h"
/* Please note that modifications to all structs defined here are
* subject to backwards-compatibility constraints:
* 1) Do not use pointers, use __u64 instead for 32 bit / 64 bit
* user/kernel compatibility
* 2) Keep fields aligned to their size
* 3) Because of how drm_ioctl() works, we can add new fields at
* the end of an ioctl if some care is taken: drm_ioctl() will
* zero out the new fields at the tail of the ioctl, so a zero
* value should have a backwards compatible meaning. And for
* output params, userspace won't see the newly added output
* fields.. so that has to be somehow ok.
*/
#define MSM_PIPE_NONE 0x00
#define MSM_PIPE_2D0 0x01
#define MSM_PIPE_2D1 0x02
#define MSM_PIPE_3D0 0x10
/* timeouts are specified in clock-monotonic absolute times (to simplify
* restarting interrupted ioctls). The following struct is logically the
* same as 'struct timespec' but 32/64b ABI safe.
*/
struct drm_msm_timespec {
__s64 tv_sec; /* seconds */
__s64 tv_nsec; /* nanoseconds */
};
#define MSM_PARAM_GPU_ID 0x01
#define MSM_PARAM_GMEM_SIZE 0x02
#define MSM_PARAM_CHIP_ID 0x03
#define MSM_PARAM_MAX_FREQ 0x04
#define MSM_PARAM_TIMESTAMP 0x05
struct drm_msm_param {
__u32 pipe; /* in, MSM_PIPE_x */
__u32 param; /* in, MSM_PARAM_x */
__u64 value; /* out (get_param) or in (set_param) */
};
/*
* GEM buffers:
*/
#define MSM_BO_SCANOUT 0x00000001 /* scanout capable */
#define MSM_BO_GPU_READONLY 0x00000002
#define MSM_BO_CACHE_MASK 0x000f0000
/* cache modes */
#define MSM_BO_CACHED 0x00010000
#define MSM_BO_WC 0x00020000
#define MSM_BO_UNCACHED 0x00040000
#define MSM_BO_FLAGS (MSM_BO_SCANOUT | \
MSM_BO_GPU_READONLY | \
MSM_BO_CACHED | \
MSM_BO_WC | \
MSM_BO_UNCACHED)
struct drm_msm_gem_new {
__u64 size; /* in */
__u32 flags; /* in, mask of MSM_BO_x */
__u32 handle; /* out */
};
struct drm_msm_gem_info {
__u32 handle; /* in */
__u32 pad;
__u64 offset; /* out, offset to pass to mmap() */
};
#define MSM_PREP_READ 0x01
#define MSM_PREP_WRITE 0x02
#define MSM_PREP_NOSYNC 0x04
#define MSM_PREP_FLAGS (MSM_PREP_READ | MSM_PREP_WRITE | MSM_PREP_NOSYNC)
struct drm_msm_gem_cpu_prep {
__u32 handle; /* in */
__u32 op; /* in, mask of MSM_PREP_x */
struct drm_msm_timespec timeout; /* in */
};
struct drm_msm_gem_cpu_fini {
__u32 handle; /* in */
};
/*
* Cmdstream Submission:
*/
/* The value written into the cmdstream is logically:
*
* ((relocbuf->gpuaddr + reloc_offset) << shift) | or
*
* When we have GPU's w/ >32bit ptrs, it should be possible to deal
* with this by emit'ing two reloc entries with appropriate shift
* values. Or a new MSM_SUBMIT_CMD_x type would also be an option.
*
* NOTE that reloc's must be sorted by order of increasing submit_offset,
* otherwise EINVAL.
*/
struct drm_msm_gem_submit_reloc {
__u32 submit_offset; /* in, offset from submit_bo */
__u32 or; /* in, value OR'd with result */
__s32 shift; /* in, amount of left shift (can be negative) */
__u32 reloc_idx; /* in, index of reloc_bo buffer */
__u64 reloc_offset; /* in, offset from start of reloc_bo */
};
/* submit-types:
* BUF - this cmd buffer is executed normally.
* IB_TARGET_BUF - this cmd buffer is an IB target. Reloc's are
* processed normally, but the kernel does not setup an IB to
* this buffer in the first-level ringbuffer
* CTX_RESTORE_BUF - only executed if there has been a GPU context
* switch since the last SUBMIT ioctl
*/
#define MSM_SUBMIT_CMD_BUF 0x0001
#define MSM_SUBMIT_CMD_IB_TARGET_BUF 0x0002
#define MSM_SUBMIT_CMD_CTX_RESTORE_BUF 0x0003
struct drm_msm_gem_submit_cmd {
__u32 type; /* in, one of MSM_SUBMIT_CMD_x */
__u32 submit_idx; /* in, index of submit_bo cmdstream buffer */
__u32 submit_offset; /* in, offset into submit_bo */
__u32 size; /* in, cmdstream size */
__u32 pad;
__u32 nr_relocs; /* in, number of submit_reloc's */
__u64 __user relocs; /* in, ptr to array of submit_reloc's */
};
/* Each buffer referenced elsewhere in the cmdstream submit (ie. the
* cmdstream buffer(s) themselves or reloc entries) has one (and only
* one) entry in the submit->bos[] table.
*
* As a optimization, the current buffer (gpu virtual address) can be
* passed back through the 'presumed' field. If on a subsequent reloc,
* userspace passes back a 'presumed' address that is still valid,
* then patching the cmdstream for this entry is skipped. This can
* avoid kernel needing to map/access the cmdstream bo in the common
* case.
*/
#define MSM_SUBMIT_BO_READ 0x0001
#define MSM_SUBMIT_BO_WRITE 0x0002
#define MSM_SUBMIT_BO_FLAGS (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE)
struct drm_msm_gem_submit_bo {
__u32 flags; /* in, mask of MSM_SUBMIT_BO_x */
__u32 handle; /* in, GEM handle */
__u64 presumed; /* in/out, presumed buffer address */
};
/* Each cmdstream submit consists of a table of buffers involved, and
* one or more cmdstream buffers. This allows for conditional execution
* (context-restore), and IB buffers needed for per tile/bin draw cmds.
*/
struct drm_msm_gem_submit {
__u32 pipe; /* in, MSM_PIPE_x */
__u32 fence; /* out */
__u32 nr_bos; /* in, number of submit_bo's */
__u32 nr_cmds; /* in, number of submit_cmd's */
__u64 __user bos; /* in, ptr to array of submit_bo's */
__u64 __user cmds; /* in, ptr to array of submit_cmd's */
};
/* The normal way to synchronize with the GPU is just to CPU_PREP on
* a buffer if you need to access it from the CPU (other cmdstream
* submission from same or other contexts, PAGE_FLIP ioctl, etc, all
* handle the required synchronization under the hood). This ioctl
* mainly just exists as a way to implement the gallium pipe_fence
* APIs without requiring a dummy bo to synchronize on.
*/
struct drm_msm_wait_fence {
__u32 fence; /* in */
__u32 pad;
struct drm_msm_timespec timeout; /* in */
};
#define DRM_MSM_GET_PARAM 0x00
/* placeholder:
#define DRM_MSM_SET_PARAM 0x01
*/
#define DRM_MSM_GEM_NEW 0x02
#define DRM_MSM_GEM_INFO 0x03
#define DRM_MSM_GEM_CPU_PREP 0x04
#define DRM_MSM_GEM_CPU_FINI 0x05
#define DRM_MSM_GEM_SUBMIT 0x06
#define DRM_MSM_WAIT_FENCE 0x07
#define DRM_MSM_NUM_IOCTLS 0x08
#define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param)
#define DRM_IOCTL_MSM_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new)
#define DRM_IOCTL_MSM_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_INFO, struct drm_msm_gem_info)
#define DRM_IOCTL_MSM_GEM_CPU_PREP DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_PREP, struct drm_msm_gem_cpu_prep)
#define DRM_IOCTL_MSM_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_FINI, struct drm_msm_gem_cpu_fini)
#define DRM_IOCTL_MSM_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_SUBMIT, struct drm_msm_gem_submit)
#define DRM_IOCTL_MSM_WAIT_FENCE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_WAIT_FENCE, struct drm_msm_wait_fence)
#endif /* __MSM_DRM_H__ */
|
