1 /* SPDX-License-Identifier: MIT */
2 /*
3 * Copyright © 2014-2018 Broadcom
4 * Copyright © 2019 Collabora ltd.
5 */
6 #ifndef _PANFROST_DRM_H_
7 #define _PANFROST_DRM_H_
8
9 #include "drm.h"
10
11 #if defined(__cplusplus)
12 extern "C" {
13 #endif
14
15 #define DRM_PANFROST_SUBMIT 0x00
16 #define DRM_PANFROST_WAIT_BO 0x01
17 #define DRM_PANFROST_CREATE_BO 0x02
18 #define DRM_PANFROST_MMAP_BO 0x03
19 #define DRM_PANFROST_GET_PARAM 0x04
20 #define DRM_PANFROST_GET_BO_OFFSET 0x05
21 #define DRM_PANFROST_PERFCNT_ENABLE 0x06
22 #define DRM_PANFROST_PERFCNT_DUMP 0x07
23 #define DRM_PANFROST_MADVISE 0x08
24
25 #define DRM_IOCTL_PANFROST_SUBMIT DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_SUBMIT, struct drm_panfrost_submit)
26 #define DRM_IOCTL_PANFROST_WAIT_BO DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_WAIT_BO, struct drm_panfrost_wait_bo)
27 #define DRM_IOCTL_PANFROST_CREATE_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_CREATE_BO, struct drm_panfrost_create_bo)
28 #define DRM_IOCTL_PANFROST_MMAP_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_MMAP_BO, struct drm_panfrost_mmap_bo)
29 #define DRM_IOCTL_PANFROST_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_GET_PARAM, struct drm_panfrost_get_param)
30 #define DRM_IOCTL_PANFROST_GET_BO_OFFSET DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_GET_BO_OFFSET, struct drm_panfrost_get_bo_offset)
31 #define DRM_IOCTL_PANFROST_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_MADVISE, struct drm_panfrost_madvise)
32
33 /*
34 * Unstable ioctl(s): only exposed when the unsafe unstable_ioctls module
35 * param is set to true.
36 * All these ioctl(s) are subject to deprecation, so please don't rely on
37 * them for anything but debugging purpose.
38 */
39 #define DRM_IOCTL_PANFROST_PERFCNT_ENABLE DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_PERFCNT_ENABLE, struct drm_panfrost_perfcnt_enable)
40 #define DRM_IOCTL_PANFROST_PERFCNT_DUMP DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_PERFCNT_DUMP, struct drm_panfrost_perfcnt_dump)
41
42 #define PANFROST_JD_REQ_FS (1 << 0)
43 /**
44 * struct drm_panfrost_submit - ioctl argument for submitting commands to the 3D
45 * engine.
46 *
47 * This asks the kernel to have the GPU execute a render command list.
48 */
49 struct drm_panfrost_submit {
50
51 /** Address to GPU mapping of job descriptor */
52 __u64 jc;
53
54 /** An optional array of sync objects to wait on before starting this job. */
55 __u64 in_syncs;
56
57 /** Number of sync objects to wait on before starting this job. */
58 __u32 in_sync_count;
59
60 /** An optional sync object to place the completion fence in. */
61 __u32 out_sync;
62
63 /** Pointer to a u32 array of the BOs that are referenced by the job. */
64 __u64 bo_handles;
65
66 /** Number of BO handles passed in (size is that times 4). */
67 __u32 bo_handle_count;
68
69 /** A combination of PANFROST_JD_REQ_* */
70 __u32 requirements;
71 };
72
73 /**
74 * struct drm_panfrost_wait_bo - ioctl argument for waiting for
75 * completion of the last DRM_PANFROST_SUBMIT on a BO.
76 *
77 * This is useful for cases where multiple processes might be
78 * rendering to a BO and you want to wait for all rendering to be
79 * completed.
80 */
81 struct drm_panfrost_wait_bo {
82 __u32 handle;
83 __u32 pad;
84 __s64 timeout_ns; /* absolute */
85 };
86
87 #define PANFROST_BO_NOEXEC 1
88 #define PANFROST_BO_HEAP 2
89
90 /**
91 * struct drm_panfrost_create_bo - ioctl argument for creating Panfrost BOs.
92 *
93 * There are currently no values for the flags argument, but it may be
94 * used in a future extension.
95 */
96 struct drm_panfrost_create_bo {
97 __u32 size;
98 __u32 flags;
99 /** Returned GEM handle for the BO. */
100 __u32 handle;
101 /* Pad, must be zero-filled. */
102 __u32 pad;
103 /**
104 * Returned offset for the BO in the GPU address space. This offset
105 * is private to the DRM fd and is valid for the lifetime of the GEM
106 * handle.
107 *
108 * This offset value will always be nonzero, since various HW
109 * units treat 0 specially.
110 */
111 __u64 offset;
112 };
113
114 /**
115 * struct drm_panfrost_mmap_bo - ioctl argument for mapping Panfrost BOs.
116 *
117 * This doesn't actually perform an mmap. Instead, it returns the
118 * offset you need to use in an mmap on the DRM device node. This
119 * means that tools like valgrind end up knowing about the mapped
120 * memory.
121 *
122 * There are currently no values for the flags argument, but it may be
123 * used in a future extension.
124 */
125 struct drm_panfrost_mmap_bo {
126 /** Handle for the object being mapped. */
127 __u32 handle;
128 __u32 flags;
129 /** offset into the drm node to use for subsequent mmap call. */
130 __u64 offset;
131 };
132
133 enum drm_panfrost_param {
134 DRM_PANFROST_PARAM_GPU_PROD_ID,
135 DRM_PANFROST_PARAM_GPU_REVISION,
136 DRM_PANFROST_PARAM_SHADER_PRESENT,
137 DRM_PANFROST_PARAM_TILER_PRESENT,
138 DRM_PANFROST_PARAM_L2_PRESENT,
139 DRM_PANFROST_PARAM_STACK_PRESENT,
140 DRM_PANFROST_PARAM_AS_PRESENT,
141 DRM_PANFROST_PARAM_JS_PRESENT,
142 DRM_PANFROST_PARAM_L2_FEATURES,
143 DRM_PANFROST_PARAM_CORE_FEATURES,
144 DRM_PANFROST_PARAM_TILER_FEATURES,
145 DRM_PANFROST_PARAM_MEM_FEATURES,
146 DRM_PANFROST_PARAM_MMU_FEATURES,
147 DRM_PANFROST_PARAM_THREAD_FEATURES,
148 DRM_PANFROST_PARAM_MAX_THREADS,
149 DRM_PANFROST_PARAM_THREAD_MAX_WORKGROUP_SZ,
150 DRM_PANFROST_PARAM_THREAD_MAX_BARRIER_SZ,
151 DRM_PANFROST_PARAM_COHERENCY_FEATURES,
152 DRM_PANFROST_PARAM_TEXTURE_FEATURES0,
153 DRM_PANFROST_PARAM_TEXTURE_FEATURES1,
154 DRM_PANFROST_PARAM_TEXTURE_FEATURES2,
155 DRM_PANFROST_PARAM_TEXTURE_FEATURES3,
156 DRM_PANFROST_PARAM_JS_FEATURES0,
157 DRM_PANFROST_PARAM_JS_FEATURES1,
158 DRM_PANFROST_PARAM_JS_FEATURES2,
159 DRM_PANFROST_PARAM_JS_FEATURES3,
160 DRM_PANFROST_PARAM_JS_FEATURES4,
161 DRM_PANFROST_PARAM_JS_FEATURES5,
162 DRM_PANFROST_PARAM_JS_FEATURES6,
163 DRM_PANFROST_PARAM_JS_FEATURES7,
164 DRM_PANFROST_PARAM_JS_FEATURES8,
165 DRM_PANFROST_PARAM_JS_FEATURES9,
166 DRM_PANFROST_PARAM_JS_FEATURES10,
167 DRM_PANFROST_PARAM_JS_FEATURES11,
168 DRM_PANFROST_PARAM_JS_FEATURES12,
169 DRM_PANFROST_PARAM_JS_FEATURES13,
170 DRM_PANFROST_PARAM_JS_FEATURES14,
171 DRM_PANFROST_PARAM_JS_FEATURES15,
172 DRM_PANFROST_PARAM_NR_CORE_GROUPS,
173 DRM_PANFROST_PARAM_THREAD_TLS_ALLOC,
174 };
175
176 struct drm_panfrost_get_param {
177 __u32 param;
178 __u32 pad;
179 __u64 value;
180 };
181
182 /**
183 * Returns the offset for the BO in the GPU address space for this DRM fd.
184 * This is the same value returned by drm_panfrost_create_bo, if that was called
185 * from this DRM fd.
186 */
187 struct drm_panfrost_get_bo_offset {
188 __u32 handle;
189 __u32 pad;
190 __u64 offset;
191 };
192
193 struct drm_panfrost_perfcnt_enable {
194 __u32 enable;
195 /*
196 * On bifrost we have 2 sets of counters, this parameter defines the
197 * one to track.
198 */
199 __u32 counterset;
200 };
201
202 struct drm_panfrost_perfcnt_dump {
203 __u64 buf_ptr;
204 };
205
206 /* madvise provides a way to tell the kernel in case a buffers contents
207 * can be discarded under memory pressure, which is useful for userspace
208 * bo cache where we want to optimistically hold on to buffer allocate
209 * and potential mmap, but allow the pages to be discarded under memory
210 * pressure.
211 *
212 * Typical usage would involve madvise(DONTNEED) when buffer enters BO
213 * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache.
214 * In the WILLNEED case, 'retained' indicates to userspace whether the
215 * backing pages still exist.
216 */
217 #define PANFROST_MADV_WILLNEED 0 /* backing pages are needed, status returned in 'retained' */
218 #define PANFROST_MADV_DONTNEED 1 /* backing pages not needed */
219
220 struct drm_panfrost_madvise {
221 __u32 handle; /* in, GEM handle */
222 __u32 madv; /* in, PANFROST_MADV_x */
223 __u32 retained; /* out, whether backing store still exists */
224 };
225
226 #if defined(__cplusplus)
227 }
228 #endif
229
230 #endif /* _PANFROST_DRM_H_ */