2 * Copyright (C) 2015 Etnaviv Project
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.
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
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/>.
17 #ifndef __ETNAVIV_DRM_H__
18 #define __ETNAVIV_DRM_H__
22 #if defined(__cplusplus)
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.
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.
43 struct drm_etnaviv_timespec {
44 __s64 tv_sec; /* seconds */
45 __s64 tv_nsec; /* nanoseconds */
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
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
70 #define ETNA_MAX_PIPES 4
72 struct drm_etnaviv_param {
74 __u32 param; /* in, ETNAVIV_PARAM_x */
75 __u64 value; /* out (get_param) or in (set_param) */
82 #define ETNA_BO_CACHE_MASK 0x000f0000
84 #define ETNA_BO_CACHED 0x00010000
85 #define ETNA_BO_WC 0x00020000
86 #define ETNA_BO_UNCACHED 0x00040000
88 #define ETNA_BO_FORCE_MMU 0x00100000
90 struct drm_etnaviv_gem_new {
92 __u32 flags; /* in, mask of ETNA_BO_x */
93 __u32 handle; /* out */
96 struct drm_etnaviv_gem_info {
97 __u32 handle; /* in */
99 __u64 offset; /* out, offset to pass to mmap() */
102 #define ETNA_PREP_READ 0x01
103 #define ETNA_PREP_WRITE 0x02
104 #define ETNA_PREP_NOSYNC 0x04
106 struct 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 */
112 struct drm_etnaviv_gem_cpu_fini {
113 __u32 handle; /* in */
114 __u32 flags; /* in, placeholder for now, no defined values */
118 * Cmdstream Submission:
121 /* The value written into the cmdstream is logically:
122 * relocbuf->gpuaddr + reloc_offset
124 * NOTE that reloc's must be sorted by order of increasing submit_offset,
127 struct 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 */
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.
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
145 #define ETNA_SUBMIT_BO_READ 0x0001
146 #define ETNA_SUBMIT_BO_WRITE 0x0002
147 struct 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 */
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.
157 #define ETNA_PIPE_3D 0x00
158 #define ETNA_PIPE_2D 0x01
159 #define ETNA_PIPE_VG 0x02
160 struct drm_etnaviv_gem_submit {
161 __u32 fence; /* out */
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 */
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.
179 #define ETNA_WAIT_NONBLOCK 0x01
180 struct drm_etnaviv_wait_fence {
182 __u32 fence; /* in */
183 __u32 flags; /* in, mask of ETNA_WAIT_x */
185 struct drm_etnaviv_timespec timeout; /* in */
188 #define ETNA_USERPTR_READ 0x01
189 #define ETNA_USERPTR_WRITE 0x02
190 struct 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 */
197 struct drm_etnaviv_gem_wait {
199 __u32 handle; /* in, bo to be waited for */
200 __u32 flags; /* in, mask of ETNA_WAIT_x */
202 struct drm_etnaviv_timespec timeout; /* in */
205 #define DRM_ETNAVIV_GET_PARAM 0x00
207 #define DRM_ETNAVIV_SET_PARAM 0x01
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
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)
229 #if defined(__cplusplus)
233 #endif /* __ETNAVIV_DRM_H__ */