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authorThe etnaviv authors2016-09-06 11:15:53 -0500
committerChristian Gmeiner2016-09-17 08:05:25 -0500
commit95e2cc6a801d92a0634b75fb02221213bd11e9da (patch)
treee2502b4adf10dfc2d2b9311752b51c399c2a4b57 /etnaviv/etnaviv_drm.h
parent2d00869599a1c853238401a38a334c3bc8673343 (diff)
downloadexternal-libdrm-95e2cc6a801d92a0634b75fb02221213bd11e9da.tar.gz
external-libdrm-95e2cc6a801d92a0634b75fb02221213bd11e9da.tar.xz
external-libdrm-95e2cc6a801d92a0634b75fb02221213bd11e9da.zip
libdrm: add etnaviv drm support
Add the libdrm_etnaviv helper library to encapsulate etnaviv-specific interfaces to the DRM. Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Tested-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'etnaviv/etnaviv_drm.h')
-rw-r--r--etnaviv/etnaviv_drm.h233
1 files changed, 233 insertions, 0 deletions
diff --git a/etnaviv/etnaviv_drm.h b/etnaviv/etnaviv_drm.h
new file mode 100644
index 00000000..2584c1cc
--- /dev/null
+++ b/etnaviv/etnaviv_drm.h
@@ -0,0 +1,233 @@
1/*
2 * Copyright (C) 2015 Etnaviv Project
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published by
6 * the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#ifndef __ETNAVIV_DRM_H__
18#define __ETNAVIV_DRM_H__
19
20#include "drm.h"
21
22#if defined(__cplusplus)
23extern "C" {
24#endif
25
26/* Please note that modifications to all structs defined here are
27 * subject to backwards-compatibility constraints:
28 * 1) Do not use pointers, use __u64 instead for 32 bit / 64 bit
29 * user/kernel compatibility
30 * 2) Keep fields aligned to their size
31 * 3) Because of how drm_ioctl() works, we can add new fields at
32 * the end of an ioctl if some care is taken: drm_ioctl() will
33 * zero out the new fields at the tail of the ioctl, so a zero
34 * value should have a backwards compatible meaning. And for
35 * output params, userspace won't see the newly added output
36 * fields.. so that has to be somehow ok.
37 */
38
39/* timeouts are specified in clock-monotonic absolute times (to simplify
40 * restarting interrupted ioctls). The following struct is logically the
41 * same as 'struct timespec' but 32/64b ABI safe.
42 */
43struct drm_etnaviv_timespec {
44 __s64 tv_sec; /* seconds */
45 __s64 tv_nsec; /* nanoseconds */
46};
47
48#define ETNAVIV_PARAM_GPU_MODEL 0x01
49#define ETNAVIV_PARAM_GPU_REVISION 0x02
50#define ETNAVIV_PARAM_GPU_FEATURES_0 0x03
51#define ETNAVIV_PARAM_GPU_FEATURES_1 0x04
52#define ETNAVIV_PARAM_GPU_FEATURES_2 0x05
53#define ETNAVIV_PARAM_GPU_FEATURES_3 0x06
54#define ETNAVIV_PARAM_GPU_FEATURES_4 0x07
55#define ETNAVIV_PARAM_GPU_FEATURES_5 0x08
56#define ETNAVIV_PARAM_GPU_FEATURES_6 0x09
57
58#define ETNAVIV_PARAM_GPU_STREAM_COUNT 0x10
59#define ETNAVIV_PARAM_GPU_REGISTER_MAX 0x11
60#define ETNAVIV_PARAM_GPU_THREAD_COUNT 0x12
61#define ETNAVIV_PARAM_GPU_VERTEX_CACHE_SIZE 0x13
62#define ETNAVIV_PARAM_GPU_SHADER_CORE_COUNT 0x14
63#define ETNAVIV_PARAM_GPU_PIXEL_PIPES 0x15
64#define ETNAVIV_PARAM_GPU_VERTEX_OUTPUT_BUFFER_SIZE 0x16
65#define ETNAVIV_PARAM_GPU_BUFFER_SIZE 0x17
66#define ETNAVIV_PARAM_GPU_INSTRUCTION_COUNT 0x18
67#define ETNAVIV_PARAM_GPU_NUM_CONSTANTS 0x19
68#define ETNAVIV_PARAM_GPU_NUM_VARYINGS 0x1a
69
70#define ETNA_MAX_PIPES 4
71
72struct drm_etnaviv_param {
73 __u32 pipe; /* in */
74 __u32 param; /* in, ETNAVIV_PARAM_x */
75 __u64 value; /* out (get_param) or in (set_param) */
76};
77
78/*
79 * GEM buffers:
80 */
81
82#define ETNA_BO_CACHE_MASK 0x000f0000
83/* cache modes */
84#define ETNA_BO_CACHED 0x00010000
85#define ETNA_BO_WC 0x00020000
86#define ETNA_BO_UNCACHED 0x00040000
87/* map flags */
88#define ETNA_BO_FORCE_MMU 0x00100000
89
90struct drm_etnaviv_gem_new {
91 __u64 size; /* in */
92 __u32 flags; /* in, mask of ETNA_BO_x */
93 __u32 handle; /* out */
94};
95
96struct drm_etnaviv_gem_info {
97 __u32 handle; /* in */
98 __u32 pad;
99 __u64 offset; /* out, offset to pass to mmap() */
100};
101
102#define ETNA_PREP_READ 0x01
103#define ETNA_PREP_WRITE 0x02
104#define ETNA_PREP_NOSYNC 0x04
105
106struct drm_etnaviv_gem_cpu_prep {
107 __u32 handle; /* in */
108 __u32 op; /* in, mask of ETNA_PREP_x */
109 struct drm_etnaviv_timespec timeout; /* in */
110};
111
112struct drm_etnaviv_gem_cpu_fini {
113 __u32 handle; /* in */
114 __u32 flags; /* in, placeholder for now, no defined values */
115};
116
117/*
118 * Cmdstream Submission:
119 */
120
121/* The value written into the cmdstream is logically:
122 * relocbuf->gpuaddr + reloc_offset
123 *
124 * NOTE that reloc's must be sorted by order of increasing submit_offset,
125 * otherwise EINVAL.
126 */
127struct drm_etnaviv_gem_submit_reloc {
128 __u32 submit_offset; /* in, offset from submit_bo */
129 __u32 reloc_idx; /* in, index of reloc_bo buffer */
130 __u64 reloc_offset; /* in, offset from start of reloc_bo */
131 __u32 flags; /* in, placeholder for now, no defined values */
132};
133
134/* Each buffer referenced elsewhere in the cmdstream submit (ie. the
135 * cmdstream buffer(s) themselves or reloc entries) has one (and only
136 * one) entry in the submit->bos[] table.
137 *
138 * As a optimization, the current buffer (gpu virtual address) can be
139 * passed back through the 'presumed' field. If on a subsequent reloc,
140 * userspace passes back a 'presumed' address that is still valid,
141 * then patching the cmdstream for this entry is skipped. This can
142 * avoid kernel needing to map/access the cmdstream bo in the common
143 * case.
144 */
145#define ETNA_SUBMIT_BO_READ 0x0001
146#define ETNA_SUBMIT_BO_WRITE 0x0002
147struct drm_etnaviv_gem_submit_bo {
148 __u32 flags; /* in, mask of ETNA_SUBMIT_BO_x */
149 __u32 handle; /* in, GEM handle */
150 __u64 presumed; /* in/out, presumed buffer address */
151};
152
153/* Each cmdstream submit consists of a table of buffers involved, and
154 * one or more cmdstream buffers. This allows for conditional execution
155 * (context-restore), and IB buffers needed for per tile/bin draw cmds.
156 */
157#define ETNA_PIPE_3D 0x00
158#define ETNA_PIPE_2D 0x01
159#define ETNA_PIPE_VG 0x02
160struct drm_etnaviv_gem_submit {
161 __u32 fence; /* out */
162 __u32 pipe; /* in */
163 __u32 exec_state; /* in, initial execution state (ETNA_PIPE_x) */
164 __u32 nr_bos; /* in, number of submit_bo's */
165 __u32 nr_relocs; /* in, number of submit_reloc's */
166 __u32 stream_size; /* in, cmdstream size */
167 __u64 bos; /* in, ptr to array of submit_bo's */
168 __u64 relocs; /* in, ptr to array of submit_reloc's */
169 __u64 stream; /* in, ptr to cmdstream */
170};
171
172/* The normal way to synchronize with the GPU is just to CPU_PREP on
173 * a buffer if you need to access it from the CPU (other cmdstream
174 * submission from same or other contexts, PAGE_FLIP ioctl, etc, all
175 * handle the required synchronization under the hood). This ioctl
176 * mainly just exists as a way to implement the gallium pipe_fence
177 * APIs without requiring a dummy bo to synchronize on.
178 */
179#define ETNA_WAIT_NONBLOCK 0x01
180struct drm_etnaviv_wait_fence {
181 __u32 pipe; /* in */
182 __u32 fence; /* in */
183 __u32 flags; /* in, mask of ETNA_WAIT_x */
184 __u32 pad;
185 struct drm_etnaviv_timespec timeout; /* in */
186};
187
188#define ETNA_USERPTR_READ 0x01
189#define ETNA_USERPTR_WRITE 0x02
190struct drm_etnaviv_gem_userptr {
191 __u64 user_ptr; /* in, page aligned user pointer */
192 __u64 user_size; /* in, page aligned user size */
193 __u32 flags; /* in, flags */
194 __u32 handle; /* out, non-zero handle */
195};
196
197struct drm_etnaviv_gem_wait {
198 __u32 pipe; /* in */
199 __u32 handle; /* in, bo to be waited for */
200 __u32 flags; /* in, mask of ETNA_WAIT_x */
201 __u32 pad;
202 struct drm_etnaviv_timespec timeout; /* in */
203};
204
205#define DRM_ETNAVIV_GET_PARAM 0x00
206/* placeholder:
207#define DRM_ETNAVIV_SET_PARAM 0x01
208 */
209#define DRM_ETNAVIV_GEM_NEW 0x02
210#define DRM_ETNAVIV_GEM_INFO 0x03
211#define DRM_ETNAVIV_GEM_CPU_PREP 0x04
212#define DRM_ETNAVIV_GEM_CPU_FINI 0x05
213#define DRM_ETNAVIV_GEM_SUBMIT 0x06
214#define DRM_ETNAVIV_WAIT_FENCE 0x07
215#define DRM_ETNAVIV_GEM_USERPTR 0x08
216#define DRM_ETNAVIV_GEM_WAIT 0x09
217#define DRM_ETNAVIV_NUM_IOCTLS 0x0a
218
219#define DRM_IOCTL_ETNAVIV_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GET_PARAM, struct drm_etnaviv_param)
220#define DRM_IOCTL_ETNAVIV_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_NEW, struct drm_etnaviv_gem_new)
221#define DRM_IOCTL_ETNAVIV_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_INFO, struct drm_etnaviv_gem_info)
222#define DRM_IOCTL_ETNAVIV_GEM_CPU_PREP DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_CPU_PREP, struct drm_etnaviv_gem_cpu_prep)
223#define DRM_IOCTL_ETNAVIV_GEM_CPU_FINI DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_CPU_FINI, struct drm_etnaviv_gem_cpu_fini)
224#define DRM_IOCTL_ETNAVIV_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_SUBMIT, struct drm_etnaviv_gem_submit)
225#define DRM_IOCTL_ETNAVIV_WAIT_FENCE DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_WAIT_FENCE, struct drm_etnaviv_wait_fence)
226#define DRM_IOCTL_ETNAVIV_GEM_USERPTR DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_USERPTR, struct drm_etnaviv_gem_userptr)
227#define DRM_IOCTL_ETNAVIV_GEM_WAIT DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_WAIT, struct drm_etnaviv_gem_wait)
228
229#if defined(__cplusplus)
230}
231#endif
232
233#endif /* __ETNAVIV_DRM_H__ */