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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 * Copyright (C) 2015 Etnaviv Project
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef __ETNAVIV_DRM_H__
19#define __ETNAVIV_DRM_H__
20
21#include "drm.h"
22
23#if defined(__cplusplus)
24extern "C" {
25#endif
26
27/* Please note that modifications to all structs defined here are
28 * subject to backwards-compatibility constraints:
29 * 1) Do not use pointers, use __u64 instead for 32 bit / 64 bit
30 * user/kernel compatibility
31 * 2) Keep fields aligned to their size
32 * 3) Because of how drm_ioctl() works, we can add new fields at
33 * the end of an ioctl if some care is taken: drm_ioctl() will
34 * zero out the new fields at the tail of the ioctl, so a zero
35 * value should have a backwards compatible meaning. And for
36 * output params, userspace won't see the newly added output
37 * fields.. so that has to be somehow ok.
38 */
39
40/* timeouts are specified in clock-monotonic absolute times (to simplify
41 * restarting interrupted ioctls). The following struct is logically the
42 * same as 'struct timespec' but 32/64b ABI safe.
43 */
44struct drm_etnaviv_timespec {
45 __s64 tv_sec; /* seconds */
46 __s64 tv_nsec; /* nanoseconds */
47};
48
49#define ETNAVIV_PARAM_GPU_MODEL 0x01
50#define ETNAVIV_PARAM_GPU_REVISION 0x02
51#define ETNAVIV_PARAM_GPU_FEATURES_0 0x03
52#define ETNAVIV_PARAM_GPU_FEATURES_1 0x04
53#define ETNAVIV_PARAM_GPU_FEATURES_2 0x05
54#define ETNAVIV_PARAM_GPU_FEATURES_3 0x06
55#define ETNAVIV_PARAM_GPU_FEATURES_4 0x07
56#define ETNAVIV_PARAM_GPU_FEATURES_5 0x08
57#define ETNAVIV_PARAM_GPU_FEATURES_6 0x09
58#define ETNAVIV_PARAM_GPU_FEATURES_7 0x0a
59#define ETNAVIV_PARAM_GPU_FEATURES_8 0x0b
60#define ETNAVIV_PARAM_GPU_FEATURES_9 0x0c
61#define ETNAVIV_PARAM_GPU_FEATURES_10 0x0d
62#define ETNAVIV_PARAM_GPU_FEATURES_11 0x0e
63#define ETNAVIV_PARAM_GPU_FEATURES_12 0x0f
64
65#define ETNAVIV_PARAM_GPU_STREAM_COUNT 0x10
66#define ETNAVIV_PARAM_GPU_REGISTER_MAX 0x11
67#define ETNAVIV_PARAM_GPU_THREAD_COUNT 0x12
68#define ETNAVIV_PARAM_GPU_VERTEX_CACHE_SIZE 0x13
69#define ETNAVIV_PARAM_GPU_SHADER_CORE_COUNT 0x14
70#define ETNAVIV_PARAM_GPU_PIXEL_PIPES 0x15
71#define ETNAVIV_PARAM_GPU_VERTEX_OUTPUT_BUFFER_SIZE 0x16
72#define ETNAVIV_PARAM_GPU_BUFFER_SIZE 0x17
73#define ETNAVIV_PARAM_GPU_INSTRUCTION_COUNT 0x18
74#define ETNAVIV_PARAM_GPU_NUM_CONSTANTS 0x19
75#define ETNAVIV_PARAM_GPU_NUM_VARYINGS 0x1a
76
77#define ETNA_MAX_PIPES 4
78
79struct drm_etnaviv_param {
80 __u32 pipe; /* in */
81 __u32 param; /* in, ETNAVIV_PARAM_x */
82 __u64 value; /* out (get_param) or in (set_param) */
83};
84
85/*
86 * GEM buffers:
87 */
88
89#define ETNA_BO_CACHE_MASK 0x000f0000
90/* cache modes */
91#define ETNA_BO_CACHED 0x00010000
92#define ETNA_BO_WC 0x00020000
93#define ETNA_BO_UNCACHED 0x00040000
94/* map flags */
95#define ETNA_BO_FORCE_MMU 0x00100000
96
97struct drm_etnaviv_gem_new {
98 __u64 size; /* in */
99 __u32 flags; /* in, mask of ETNA_BO_x */
100 __u32 handle; /* out */
101};
102
103struct drm_etnaviv_gem_info {
104 __u32 handle; /* in */
105 __u32 pad;
106 __u64 offset; /* out, offset to pass to mmap() */
107};
108
109#define ETNA_PREP_READ 0x01
110#define ETNA_PREP_WRITE 0x02
111#define ETNA_PREP_NOSYNC 0x04
112
113struct drm_etnaviv_gem_cpu_prep {
114 __u32 handle; /* in */
115 __u32 op; /* in, mask of ETNA_PREP_x */
116 struct drm_etnaviv_timespec timeout; /* in */
117};
118
119struct drm_etnaviv_gem_cpu_fini {
120 __u32 handle; /* in */
121 __u32 flags; /* in, placeholder for now, no defined values */
122};
123
124/*
125 * Cmdstream Submission:
126 */
127
128/* The value written into the cmdstream is logically:
129 * relocbuf->gpuaddr + reloc_offset
130 *
131 * NOTE that reloc's must be sorted by order of increasing submit_offset,
132 * otherwise EINVAL.
133 */
134struct drm_etnaviv_gem_submit_reloc {
135 __u32 submit_offset; /* in, offset from submit_bo */
136 __u32 reloc_idx; /* in, index of reloc_bo buffer */
137 __u64 reloc_offset; /* in, offset from start of reloc_bo */
138 __u32 flags; /* in, placeholder for now, no defined values */
139};
140
141/* Each buffer referenced elsewhere in the cmdstream submit (ie. the
142 * cmdstream buffer(s) themselves or reloc entries) has one (and only
143 * one) entry in the submit->bos[] table.
144 *
145 * As a optimization, the current buffer (gpu virtual address) can be
146 * passed back through the 'presumed' field. If on a subsequent reloc,
147 * userspace passes back a 'presumed' address that is still valid,
148 * then patching the cmdstream for this entry is skipped. This can
149 * avoid kernel needing to map/access the cmdstream bo in the common
150 * case.
151 */
152#define ETNA_SUBMIT_BO_READ 0x0001
153#define ETNA_SUBMIT_BO_WRITE 0x0002
154struct drm_etnaviv_gem_submit_bo {
155 __u32 flags; /* in, mask of ETNA_SUBMIT_BO_x */
156 __u32 handle; /* in, GEM handle */
157 __u64 presumed; /* in/out, presumed buffer address */
158};
159
160/* performance monitor request (pmr) */
161#define ETNA_PM_PROCESS_PRE 0x0001
162#define ETNA_PM_PROCESS_POST 0x0002
163struct drm_etnaviv_gem_submit_pmr {
164 __u32 flags; /* in, when to process request (ETNA_PM_PROCESS_x) */
165 __u8 domain; /* in, pm domain */
166 __u8 pad;
167 __u16 signal; /* in, pm signal */
168 __u32 sequence; /* in, sequence number */
169 __u32 read_offset; /* in, offset from read_bo */
170 __u32 read_idx; /* in, index of read_bo buffer */
171};
172
173/* Each cmdstream submit consists of a table of buffers involved, and
174 * one or more cmdstream buffers. This allows for conditional execution
175 * (context-restore), and IB buffers needed for per tile/bin draw cmds.
176 */
177#define ETNA_SUBMIT_NO_IMPLICIT 0x0001
178#define ETNA_SUBMIT_FENCE_FD_IN 0x0002
179#define ETNA_SUBMIT_FENCE_FD_OUT 0x0004
180#define ETNA_SUBMIT_FLAGS (ETNA_SUBMIT_NO_IMPLICIT | \
181 ETNA_SUBMIT_FENCE_FD_IN | \
182 ETNA_SUBMIT_FENCE_FD_OUT)
183#define ETNA_PIPE_3D 0x00
184#define ETNA_PIPE_2D 0x01
185#define ETNA_PIPE_VG 0x02
186struct drm_etnaviv_gem_submit {
187 __u32 fence; /* out */
188 __u32 pipe; /* in */
189 __u32 exec_state; /* in, initial execution state (ETNA_PIPE_x) */
190 __u32 nr_bos; /* in, number of submit_bo's */
191 __u32 nr_relocs; /* in, number of submit_reloc's */
192 __u32 stream_size; /* in, cmdstream size */
193 __u64 bos; /* in, ptr to array of submit_bo's */
194 __u64 relocs; /* in, ptr to array of submit_reloc's */
195 __u64 stream; /* in, ptr to cmdstream */
196 __u32 flags; /* in, mask of ETNA_SUBMIT_x */
197 __s32 fence_fd; /* in/out, fence fd (see ETNA_SUBMIT_FENCE_FD_x) */
198 __u64 pmrs; /* in, ptr to array of submit_pmr's */
199 __u32 nr_pmrs; /* in, number of submit_pmr's */
200 __u32 pad;
201};
202
203/* The normal way to synchronize with the GPU is just to CPU_PREP on
204 * a buffer if you need to access it from the CPU (other cmdstream
205 * submission from same or other contexts, PAGE_FLIP ioctl, etc, all
206 * handle the required synchronization under the hood). This ioctl
207 * mainly just exists as a way to implement the gallium pipe_fence
208 * APIs without requiring a dummy bo to synchronize on.
209 */
210#define ETNA_WAIT_NONBLOCK 0x01
211struct drm_etnaviv_wait_fence {
212 __u32 pipe; /* in */
213 __u32 fence; /* in */
214 __u32 flags; /* in, mask of ETNA_WAIT_x */
215 __u32 pad;
216 struct drm_etnaviv_timespec timeout; /* in */
217};
218
219#define ETNA_USERPTR_READ 0x01
220#define ETNA_USERPTR_WRITE 0x02
221struct drm_etnaviv_gem_userptr {
222 __u64 user_ptr; /* in, page aligned user pointer */
223 __u64 user_size; /* in, page aligned user size */
224 __u32 flags; /* in, flags */
225 __u32 handle; /* out, non-zero handle */
226};
227
228struct drm_etnaviv_gem_wait {
229 __u32 pipe; /* in */
230 __u32 handle; /* in, bo to be waited for */
231 __u32 flags; /* in, mask of ETNA_WAIT_x */
232 __u32 pad;
233 struct drm_etnaviv_timespec timeout; /* in */
234};
235
236/*
237 * Performance Monitor (PM):
238 */
239
240struct drm_etnaviv_pm_domain {
241 __u32 pipe; /* in */
242 __u8 iter; /* in/out, select pm domain at index iter */
243 __u8 id; /* out, id of domain */
244 __u16 nr_signals; /* out, how many signals does this domain provide */
245 char name[64]; /* out, name of domain */
246};
247
248struct drm_etnaviv_pm_signal {
249 __u32 pipe; /* in */
250 __u8 domain; /* in, pm domain index */
251 __u8 pad;
252 __u16 iter; /* in/out, select pm source at index iter */
253 __u16 id; /* out, id of signal */
254 char name[64]; /* out, name of domain */
255};
256
257#define DRM_ETNAVIV_GET_PARAM 0x00
258/* placeholder:
259#define DRM_ETNAVIV_SET_PARAM 0x01
260 */
261#define DRM_ETNAVIV_GEM_NEW 0x02
262#define DRM_ETNAVIV_GEM_INFO 0x03
263#define DRM_ETNAVIV_GEM_CPU_PREP 0x04
264#define DRM_ETNAVIV_GEM_CPU_FINI 0x05
265#define DRM_ETNAVIV_GEM_SUBMIT 0x06
266#define DRM_ETNAVIV_WAIT_FENCE 0x07
267#define DRM_ETNAVIV_GEM_USERPTR 0x08
268#define DRM_ETNAVIV_GEM_WAIT 0x09
269#define DRM_ETNAVIV_PM_QUERY_DOM 0x0a
270#define DRM_ETNAVIV_PM_QUERY_SIG 0x0b
271#define DRM_ETNAVIV_NUM_IOCTLS 0x0c
272
273#define DRM_IOCTL_ETNAVIV_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GET_PARAM, struct drm_etnaviv_param)
274#define DRM_IOCTL_ETNAVIV_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_NEW, struct drm_etnaviv_gem_new)
275#define DRM_IOCTL_ETNAVIV_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_INFO, struct drm_etnaviv_gem_info)
276#define DRM_IOCTL_ETNAVIV_GEM_CPU_PREP DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_CPU_PREP, struct drm_etnaviv_gem_cpu_prep)
277#define DRM_IOCTL_ETNAVIV_GEM_CPU_FINI DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_CPU_FINI, struct drm_etnaviv_gem_cpu_fini)
278#define DRM_IOCTL_ETNAVIV_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_SUBMIT, struct drm_etnaviv_gem_submit)
279#define DRM_IOCTL_ETNAVIV_WAIT_FENCE DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_WAIT_FENCE, struct drm_etnaviv_wait_fence)
280#define DRM_IOCTL_ETNAVIV_GEM_USERPTR DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_USERPTR, struct drm_etnaviv_gem_userptr)
281#define DRM_IOCTL_ETNAVIV_GEM_WAIT DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_WAIT, struct drm_etnaviv_gem_wait)
282#define DRM_IOCTL_ETNAVIV_PM_QUERY_DOM DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_PM_QUERY_DOM, struct drm_etnaviv_pm_domain)
283#define DRM_IOCTL_ETNAVIV_PM_QUERY_SIG DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_PM_QUERY_SIG, struct drm_etnaviv_pm_signal)
284
285#if defined(__cplusplus)
286}
287#endif
288
289#endif /* __ETNAVIV_DRM_H__ */