1 /*
2 * Copyright 2011 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24 #ifndef DRM_FOURCC_H
25 #define DRM_FOURCC_H
26
27 #include "drm.h"
28
29 #if defined(__cplusplus)
30 extern "C" {
31 #endif
32
33 /**
34 * DOC: overview
35 *
36 * In the DRM subsystem, framebuffer pixel formats are described using the
37 * fourcc codes defined in `include/uapi/drm/drm_fourcc.h`. In addition to the
38 * fourcc code, a Format Modifier may optionally be provided, in order to
39 * further describe the buffer's format - for example tiling or compression.
40 *
41 * Format Modifiers
42 * ----------------
43 *
44 * Format modifiers are used in conjunction with a fourcc code, forming a
45 * unique fourcc:modifier pair. This format:modifier pair must fully define the
46 * format and data layout of the buffer, and should be the only way to describe
47 * that particular buffer.
48 *
49 * Having multiple fourcc:modifier pairs which describe the same layout should
50 * be avoided, as such aliases run the risk of different drivers exposing
51 * different names for the same data format, forcing userspace to understand
52 * that they are aliases.
53 *
54 * Format modifiers may change any property of the buffer, including the number
55 * of planes and/or the required allocation size. Format modifiers are
56 * vendor-namespaced, and as such the relationship between a fourcc code and a
57 * modifier is specific to the modifier being used. For example, some modifiers
58 * may preserve meaning - such as number of planes - from the fourcc code,
59 * whereas others may not.
60 *
61 * Modifiers must uniquely encode buffer layout. In other words, a buffer must
62 * match only a single modifier. A modifier must not be a subset of layouts of
63 * another modifier. For instance, it's incorrect to encode pitch alignment in
64 * a modifier: a buffer may match a 64-pixel aligned modifier and a 32-pixel
65 * aligned modifier. That said, modifiers can have implicit minimal
66 * requirements.
67 *
68 * For modifiers where the combination of fourcc code and modifier can alias,
69 * a canonical pair needs to be defined and used by all drivers. Preferred
70 * combinations are also encouraged where all combinations might lead to
71 * confusion and unnecessarily reduced interoperability. An example for the
72 * latter is AFBC, where the ABGR layouts are preferred over ARGB layouts.
73 *
74 * There are two kinds of modifier users:
75 *
76 * - Kernel and user-space drivers: for drivers it's important that modifiers
77 * don't alias, otherwise two drivers might support the same format but use
78 * different aliases, preventing them from sharing buffers in an efficient
79 * format.
80 * - Higher-level programs interfacing with KMS/GBM/EGL/Vulkan/etc: these users
81 * see modifiers as opaque tokens they can check for equality and intersect.
82 * These users mustn't need to know to reason about the modifier value
83 * (i.e. they are not expected to extract information out of the modifier).
84 *
85 * Vendors should document their modifier usage in as much detail as
86 * possible, to ensure maximum compatibility across devices, drivers and
87 * applications.
88 *
89 * The authoritative list of format modifier codes is found in
90 * `include/uapi/drm/drm_fourcc.h`
91 *
92 * Open Source User Waiver
93 * -----------------------
94 *
95 * Because this is the authoritative source for pixel formats and modifiers
96 * referenced by GL, Vulkan extensions and other standards and hence used both
97 * by open source and closed source driver stacks, the usual requirement for an
98 * upstream in-kernel or open source userspace user does not apply.
99 *
100 * To ensure, as much as feasible, compatibility across stacks and avoid
101 * confusion with incompatible enumerations stakeholders for all relevant driver
102 * stacks should approve additions.
103 */
104
105 #define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \
106 ((__u32)(c) << 16) | ((__u32)(d) << 24))
107
108 #define DRM_FORMAT_BIG_ENDIAN (1U<<31) /* format is big endian instead of little endian */
109
110 /* Reserve 0 for the invalid format specifier */
111 #define DRM_FORMAT_INVALID 0
112
113 /* color index */
114 #define DRM_FORMAT_C1 fourcc_code('C', '1', ' ', ' ') /* [7:0] C0:C1:C2:C3:C4:C5:C6:C7 1:1:1:1:1:1:1:1 eight pixels/byte */
115 #define DRM_FORMAT_C2 fourcc_code('C', '2', ' ', ' ') /* [7:0] C0:C1:C2:C3 2:2:2:2 four pixels/byte */
116 #define DRM_FORMAT_C4 fourcc_code('C', '4', ' ', ' ') /* [7:0] C0:C1 4:4 two pixels/byte */
117 #define DRM_FORMAT_C8 fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
118
119 /* 1 bpp Darkness (inverse relationship between channel value and brightness) */
120 #define DRM_FORMAT_D1 fourcc_code('D', '1', ' ', ' ') /* [7:0] D0:D1:D2:D3:D4:D5:D6:D7 1:1:1:1:1:1:1:1 eight pixels/byte */
121
122 /* 2 bpp Darkness (inverse relationship between channel value and brightness) */
123 #define DRM_FORMAT_D2 fourcc_code('D', '2', ' ', ' ') /* [7:0] D0:D1:D2:D3 2:2:2:2 four pixels/byte */
124
125 /* 4 bpp Darkness (inverse relationship between channel value and brightness) */
126 #define DRM_FORMAT_D4 fourcc_code('D', '4', ' ', ' ') /* [7:0] D0:D1 4:4 two pixels/byte */
127
128 /* 8 bpp Darkness (inverse relationship between channel value and brightness) */
129 #define DRM_FORMAT_D8 fourcc_code('D', '8', ' ', ' ') /* [7:0] D */
130
131 /* 1 bpp Red (direct relationship between channel value and brightness) */
132 #define DRM_FORMAT_R1 fourcc_code('R', '1', ' ', ' ') /* [7:0] R0:R1:R2:R3:R4:R5:R6:R7 1:1:1:1:1:1:1:1 eight pixels/byte */
133
134 /* 2 bpp Red (direct relationship between channel value and brightness) */
135 #define DRM_FORMAT_R2 fourcc_code('R', '2', ' ', ' ') /* [7:0] R0:R1:R2:R3 2:2:2:2 four pixels/byte */
136
137 /* 4 bpp Red (direct relationship between channel value and brightness) */
138 #define DRM_FORMAT_R4 fourcc_code('R', '4', ' ', ' ') /* [7:0] R0:R1 4:4 two pixels/byte */
139
140 /* 8 bpp Red (direct relationship between channel value and brightness) */
141 #define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
142
143 /* 10 bpp Red (direct relationship between channel value and brightness) */
144 #define DRM_FORMAT_R10 fourcc_code('R', '1', '0', ' ') /* [15:0] x:R 6:10 little endian */
145
146 /* 12 bpp Red (direct relationship between channel value and brightness) */
147 #define DRM_FORMAT_R12 fourcc_code('R', '1', '2', ' ') /* [15:0] x:R 4:12 little endian */
148
149 /* 16 bpp Red (direct relationship between channel value and brightness) */
150 #define DRM_FORMAT_R16 fourcc_code('R', '1', '6', ' ') /* [15:0] R little endian */
151
152 /* 16 bpp RG */
153 #define DRM_FORMAT_RG88 fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
154 #define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
155
156 /* 32 bpp RG */
157 #define DRM_FORMAT_RG1616 fourcc_code('R', 'G', '3', '2') /* [31:0] R:G 16:16 little endian */
158 #define DRM_FORMAT_GR1616 fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */
159
160 /* 8 bpp RGB */
161 #define DRM_FORMAT_RGB332 fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
162 #define DRM_FORMAT_BGR233 fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
163
164 /* 16 bpp RGB */
165 #define DRM_FORMAT_XRGB4444 fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
166 #define DRM_FORMAT_XBGR4444 fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
167 #define DRM_FORMAT_RGBX4444 fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
168 #define DRM_FORMAT_BGRX4444 fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
169
170 #define DRM_FORMAT_ARGB4444 fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
171 #define DRM_FORMAT_ABGR4444 fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
172 #define DRM_FORMAT_RGBA4444 fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
173 #define DRM_FORMAT_BGRA4444 fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
174
175 #define DRM_FORMAT_XRGB1555 fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
176 #define DRM_FORMAT_XBGR1555 fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
177 #define DRM_FORMAT_RGBX5551 fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
178 #define DRM_FORMAT_BGRX5551 fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
179
180 #define DRM_FORMAT_ARGB1555 fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
181 #define DRM_FORMAT_ABGR1555 fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
182 #define DRM_FORMAT_RGBA5551 fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
183 #define DRM_FORMAT_BGRA5551 fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
184
185 #define DRM_FORMAT_RGB565 fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
186 #define DRM_FORMAT_BGR565 fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
187
188 /* 24 bpp RGB */
189 #define DRM_FORMAT_RGB888 fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
190 #define DRM_FORMAT_BGR888 fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
191
192 /* 32 bpp RGB */
193 #define DRM_FORMAT_XRGB8888 fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
194 #define DRM_FORMAT_XBGR8888 fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
195 #define DRM_FORMAT_RGBX8888 fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
196 #define DRM_FORMAT_BGRX8888 fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
197
198 #define DRM_FORMAT_ARGB8888 fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
199 #define DRM_FORMAT_ABGR8888 fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
200 #define DRM_FORMAT_RGBA8888 fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
201 #define DRM_FORMAT_BGRA8888 fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
202
203 #define DRM_FORMAT_XRGB2101010 fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
204 #define DRM_FORMAT_XBGR2101010 fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
205 #define DRM_FORMAT_RGBX1010102 fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
206 #define DRM_FORMAT_BGRX1010102 fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
207
208 #define DRM_FORMAT_ARGB2101010 fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
209 #define DRM_FORMAT_ABGR2101010 fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
210 #define DRM_FORMAT_RGBA1010102 fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
211 #define DRM_FORMAT_BGRA1010102 fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
212
213 /* 64 bpp RGB */
214 #define DRM_FORMAT_XRGB16161616 fourcc_code('X', 'R', '4', '8') /* [63:0] x:R:G:B 16:16:16:16 little endian */
215 #define DRM_FORMAT_XBGR16161616 fourcc_code('X', 'B', '4', '8') /* [63:0] x:B:G:R 16:16:16:16 little endian */
216
217 #define DRM_FORMAT_ARGB16161616 fourcc_code('A', 'R', '4', '8') /* [63:0] A:R:G:B 16:16:16:16 little endian */
218 #define DRM_FORMAT_ABGR16161616 fourcc_code('A', 'B', '4', '8') /* [63:0] A:B:G:R 16:16:16:16 little endian */
219
220 /*
221 * Floating point 64bpp RGB
222 * IEEE 754-2008 binary16 half-precision float
223 * [15:0] sign:exponent:mantissa 1:5:10
224 */
225 #define DRM_FORMAT_XRGB16161616F fourcc_code('X', 'R', '4', 'H') /* [63:0] x:R:G:B 16:16:16:16 little endian */
226 #define DRM_FORMAT_XBGR16161616F fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */
227
228 #define DRM_FORMAT_ARGB16161616F fourcc_code('A', 'R', '4', 'H') /* [63:0] A:R:G:B 16:16:16:16 little endian */
229 #define DRM_FORMAT_ABGR16161616F fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */
230
231 /*
232 * RGBA format with 10-bit components packed in 64-bit per pixel, with 6 bits
233 * of unused padding per component:
234 */
235 #define DRM_FORMAT_AXBXGXRX106106106106 fourcc_code('A', 'B', '1', '0') /* [63:0] A:x:B:x:G:x:R:x 10:6:10:6:10:6:10:6 little endian */
236
237 /* packed YCbCr */
238 #define DRM_FORMAT_YUYV fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
239 #define DRM_FORMAT_YVYU fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
240 #define DRM_FORMAT_UYVY fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
241 #define DRM_FORMAT_VYUY fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
242
243 #define DRM_FORMAT_AYUV fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
244 #define DRM_FORMAT_AVUY8888 fourcc_code('A', 'V', 'U', 'Y') /* [31:0] A:Cr:Cb:Y 8:8:8:8 little endian */
245 #define DRM_FORMAT_XYUV8888 fourcc_code('X', 'Y', 'U', 'V') /* [31:0] X:Y:Cb:Cr 8:8:8:8 little endian */
246 #define DRM_FORMAT_XVUY8888 fourcc_code('X', 'V', 'U', 'Y') /* [31:0] X:Cr:Cb:Y 8:8:8:8 little endian */
247 #define DRM_FORMAT_VUY888 fourcc_code('V', 'U', '2', '4') /* [23:0] Cr:Cb:Y 8:8:8 little endian */
248 #define DRM_FORMAT_VUY101010 fourcc_code('V', 'U', '3', '0') /* Y followed by U then V, 10:10:10. Non-linear modifier only */
249
250 /*
251 * packed Y2xx indicate for each component, xx valid data occupy msb
252 * 16-xx padding occupy lsb
253 */
254 #define DRM_FORMAT_Y210 fourcc_code('Y', '2', '1', '0') /* [63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 10:6:10:6:10:6:10:6 little endian per 2 Y pixels */
255 #define DRM_FORMAT_Y212 fourcc_code('Y', '2', '1', '2') /* [63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 12:4:12:4:12:4:12:4 little endian per 2 Y pixels */
256 #define DRM_FORMAT_Y216 fourcc_code('Y', '2', '1', '6') /* [63:0] Cr0:Y1:Cb0:Y0 16:16:16:16 little endian per 2 Y pixels */
257
258 /*
259 * packed Y4xx indicate for each component, xx valid data occupy msb
260 * 16-xx padding occupy lsb except Y410
261 */
262 #define DRM_FORMAT_Y410 fourcc_code('Y', '4', '1', '0') /* [31:0] A:Cr:Y:Cb 2:10:10:10 little endian */
263 #define DRM_FORMAT_Y412 fourcc_code('Y', '4', '1', '2') /* [63:0] A:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian */
264 #define DRM_FORMAT_Y416 fourcc_code('Y', '4', '1', '6') /* [63:0] A:Cr:Y:Cb 16:16:16:16 little endian */
265
266 #define DRM_FORMAT_XVYU2101010 fourcc_code('X', 'V', '3', '0') /* [31:0] X:Cr:Y:Cb 2:10:10:10 little endian */
267 #define DRM_FORMAT_XVYU12_16161616 fourcc_code('X', 'V', '3', '6') /* [63:0] X:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian */
268 #define DRM_FORMAT_XVYU16161616 fourcc_code('X', 'V', '4', '8') /* [63:0] X:Cr:Y:Cb 16:16:16:16 little endian */
269
270 /*
271 * packed YCbCr420 2x2 tiled formats
272 * first 64 bits will contain Y,Cb,Cr components for a 2x2 tile
273 */
274 /* [63:0] A3:A2:Y3:0:Cr0:0:Y2:0:A1:A0:Y1:0:Cb0:0:Y0:0 1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian */
275 #define DRM_FORMAT_Y0L0 fourcc_code('Y', '0', 'L', '0')
276 /* [63:0] X3:X2:Y3:0:Cr0:0:Y2:0:X1:X0:Y1:0:Cb0:0:Y0:0 1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian */
277 #define DRM_FORMAT_X0L0 fourcc_code('X', '0', 'L', '0')
278
279 /* [63:0] A3:A2:Y3:Cr0:Y2:A1:A0:Y1:Cb0:Y0 1:1:10:10:10:1:1:10:10:10 little endian */
280 #define DRM_FORMAT_Y0L2 fourcc_code('Y', '0', 'L', '2')
281 /* [63:0] X3:X2:Y3:Cr0:Y2:X1:X0:Y1:Cb0:Y0 1:1:10:10:10:1:1:10:10:10 little endian */
282 #define DRM_FORMAT_X0L2 fourcc_code('X', '0', 'L', '2')
283
284 /*
285 * 1-plane YUV 4:2:0
286 * In these formats, the component ordering is specified (Y, followed by U
287 * then V), but the exact Linear layout is undefined.
288 * These formats can only be used with a non-Linear modifier.
289 */
290 #define DRM_FORMAT_YUV420_8BIT fourcc_code('Y', 'U', '0', '8')
291 #define DRM_FORMAT_YUV420_10BIT fourcc_code('Y', 'U', '1', '0')
292
293 /*
294 * 2 plane RGB + A
295 * index 0 = RGB plane, same format as the corresponding non _A8 format has
296 * index 1 = A plane, [7:0] A
297 */
298 #define DRM_FORMAT_XRGB8888_A8 fourcc_code('X', 'R', 'A', '8')
299 #define DRM_FORMAT_XBGR8888_A8 fourcc_code('X', 'B', 'A', '8')
300 #define DRM_FORMAT_RGBX8888_A8 fourcc_code('R', 'X', 'A', '8')
301 #define DRM_FORMAT_BGRX8888_A8 fourcc_code('B', 'X', 'A', '8')
302 #define DRM_FORMAT_RGB888_A8 fourcc_code('R', '8', 'A', '8')
303 #define DRM_FORMAT_BGR888_A8 fourcc_code('B', '8', 'A', '8')
304 #define DRM_FORMAT_RGB565_A8 fourcc_code('R', '5', 'A', '8')
305 #define DRM_FORMAT_BGR565_A8 fourcc_code('B', '5', 'A', '8')
306
307 /*
308 * 2 plane YCbCr
309 * index 0 = Y plane, [7:0] Y
310 * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
311 * or
312 * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
313 */
314 #define DRM_FORMAT_NV12 fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
315 #define DRM_FORMAT_NV21 fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
316 #define DRM_FORMAT_NV16 fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
317 #define DRM_FORMAT_NV61 fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
318 #define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
319 #define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
320 /*
321 * 2 plane YCbCr
322 * index 0 = Y plane, [39:0] Y3:Y2:Y1:Y0 little endian
323 * index 1 = Cr:Cb plane, [39:0] Cr1:Cb1:Cr0:Cb0 little endian
324 */
325 #define DRM_FORMAT_NV15 fourcc_code('N', 'V', '1', '5') /* 2x2 subsampled Cr:Cb plane */
326 #define DRM_FORMAT_NV20 fourcc_code('N', 'V', '2', '0') /* 2x1 subsampled Cr:Cb plane */
327 #define DRM_FORMAT_NV30 fourcc_code('N', 'V', '3', '0') /* non-subsampled Cr:Cb plane */
328
329 /*
330 * 2 plane YCbCr MSB aligned
331 * index 0 = Y plane, [15:0] Y:x [10:6] little endian
332 * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
333 */
334 #define DRM_FORMAT_P210 fourcc_code('P', '2', '1', '0') /* 2x1 subsampled Cr:Cb plane, 10 bit per channel */
335
336 /*
337 * 2 plane YCbCr MSB aligned
338 * index 0 = Y plane, [15:0] Y:x [10:6] little endian
339 * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
340 */
341 #define DRM_FORMAT_P010 fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cr:Cb plane 10 bits per channel */
342
343 /*
344 * 2 plane YCbCr MSB aligned
345 * index 0 = Y plane, [15:0] Y:x [12:4] little endian
346 * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [12:4:12:4] little endian
347 */
348 #define DRM_FORMAT_P012 fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cr:Cb plane 12 bits per channel */
349
350 /*
351 * 2 plane YCbCr MSB aligned
352 * index 0 = Y plane, [15:0] Y little endian
353 * index 1 = Cr:Cb plane, [31:0] Cr:Cb [16:16] little endian
354 */
355 #define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
356
357 /* 2 plane YCbCr420.
358 * 3 10 bit components and 2 padding bits packed into 4 bytes.
359 * index 0 = Y plane, [31:0] x:Y2:Y1:Y0 2:10:10:10 little endian
360 * index 1 = Cr:Cb plane, [63:0] x:Cr2:Cb2:Cr1:x:Cb1:Cr0:Cb0 [2:10:10:10:2:10:10:10] little endian
361 */
362 #define DRM_FORMAT_P030 fourcc_code('P', '0', '3', '0') /* 2x2 subsampled Cr:Cb plane 10 bits per channel packed */
363
364 /* 3 plane non-subsampled (444) YCbCr
365 * 16 bits per component, but only 10 bits are used and 6 bits are padded
366 * index 0: Y plane, [15:0] Y:x [10:6] little endian
367 * index 1: Cb plane, [15:0] Cb:x [10:6] little endian
368 * index 2: Cr plane, [15:0] Cr:x [10:6] little endian
369 */
370 #define DRM_FORMAT_Q410 fourcc_code('Q', '4', '1', '0')
371
372 /* 3 plane non-subsampled (444) YCrCb
373 * 16 bits per component, but only 10 bits are used and 6 bits are padded
374 * index 0: Y plane, [15:0] Y:x [10:6] little endian
375 * index 1: Cr plane, [15:0] Cr:x [10:6] little endian
376 * index 2: Cb plane, [15:0] Cb:x [10:6] little endian
377 */
378 #define DRM_FORMAT_Q401 fourcc_code('Q', '4', '0', '1')
379
380 /*
381 * 3 plane YCbCr
382 * index 0: Y plane, [7:0] Y
383 * index 1: Cb plane, [7:0] Cb
384 * index 2: Cr plane, [7:0] Cr
385 * or
386 * index 1: Cr plane, [7:0] Cr
387 * index 2: Cb plane, [7:0] Cb
388 */
389 #define DRM_FORMAT_YUV410 fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
390 #define DRM_FORMAT_YVU410 fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
391 #define DRM_FORMAT_YUV411 fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
392 #define DRM_FORMAT_YVU411 fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
393 #define DRM_FORMAT_YUV420 fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
394 #define DRM_FORMAT_YVU420 fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
395 #define DRM_FORMAT_YUV422 fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
396 #define DRM_FORMAT_YVU422 fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
397 #define DRM_FORMAT_YUV444 fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
398 #define DRM_FORMAT_YVU444 fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
399
400
401 /*
402 * Format Modifiers:
403 *
404 * Format modifiers describe, typically, a re-ordering or modification
405 * of the data in a plane of an FB. This can be used to express tiled/
406 * swizzled formats, or compression, or a combination of the two.
407 *
408 * The upper 8 bits of the format modifier are a vendor-id as assigned
409 * below. The lower 56 bits are assigned as vendor sees fit.
410 */
411
412 /* Vendor Ids: */
413 #define DRM_FORMAT_MOD_VENDOR_NONE 0
414 #define DRM_FORMAT_MOD_VENDOR_INTEL 0x01
415 #define DRM_FORMAT_MOD_VENDOR_AMD 0x02
416 #define DRM_FORMAT_MOD_VENDOR_NVIDIA 0x03
417 #define DRM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
418 #define DRM_FORMAT_MOD_VENDOR_QCOM 0x05
419 #define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06
420 #define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07
421 #define DRM_FORMAT_MOD_VENDOR_ARM 0x08
422 #define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09
423 #define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a
424
425 /* add more to the end as needed */
426
427 #define DRM_FORMAT_RESERVED ((1ULL << 56) - 1)
428
429 #define fourcc_mod_get_vendor(modifier) \
430 (((modifier) >> 56) & 0xff)
431
432 #define fourcc_mod_is_vendor(modifier, vendor) \
433 (fourcc_mod_get_vendor(modifier) == DRM_FORMAT_MOD_VENDOR_## vendor)
434
435 #define fourcc_mod_code(vendor, val) \
436 ((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL))
437
438 /*
439 * Format Modifier tokens:
440 *
441 * When adding a new token please document the layout with a code comment,
442 * similar to the fourcc codes above. drm_fourcc.h is considered the
443 * authoritative source for all of these.
444 *
445 * Generic modifier names:
446 *
447 * DRM_FORMAT_MOD_GENERIC_* definitions are used to provide vendor-neutral names
448 * for layouts which are common across multiple vendors. To preserve
449 * compatibility, in cases where a vendor-specific definition already exists and
450 * a generic name for it is desired, the common name is a purely symbolic alias
451 * and must use the same numerical value as the original definition.
452 *
453 * Note that generic names should only be used for modifiers which describe
454 * generic layouts (such as pixel re-ordering), which may have
455 * independently-developed support across multiple vendors.
456 *
457 * In future cases where a generic layout is identified before merging with a
458 * vendor-specific modifier, a new 'GENERIC' vendor or modifier using vendor
459 * 'NONE' could be considered. This should only be for obvious, exceptional
460 * cases to avoid polluting the 'GENERIC' namespace with modifiers which only
461 * apply to a single vendor.
462 *
463 * Generic names should not be used for cases where multiple hardware vendors
464 * have implementations of the same standardised compression scheme (such as
465 * AFBC). In those cases, all implementations should use the same format
466 * modifier(s), reflecting the vendor of the standard.
467 */
468
469 #define DRM_FORMAT_MOD_GENERIC_16_16_TILE DRM_FORMAT_MOD_SAMSUNG_16_16_TILE
470
471 /*
472 * Invalid Modifier
473 *
474 * This modifier can be used as a sentinel to terminate the format modifiers
475 * list, or to initialize a variable with an invalid modifier. It might also be
476 * used to report an error back to userspace for certain APIs.
477 */
478 #define DRM_FORMAT_MOD_INVALID fourcc_mod_code(NONE, DRM_FORMAT_RESERVED)
479
480 /*
481 * Linear Layout
482 *
483 * Just plain linear layout. Note that this is different from no specifying any
484 * modifier (e.g. not setting DRM_MODE_FB_MODIFIERS in the DRM_ADDFB2 ioctl),
485 * which tells the driver to also take driver-internal information into account
486 * and so might actually result in a tiled framebuffer.
487 */
488 #define DRM_FORMAT_MOD_LINEAR fourcc_mod_code(NONE, 0)
489
490 /*
491 * Deprecated: use DRM_FORMAT_MOD_LINEAR instead
492 *
493 * The "none" format modifier doesn't actually mean that the modifier is
494 * implicit, instead it means that the layout is linear. Whether modifiers are
495 * used is out-of-band information carried in an API-specific way (e.g. in a
496 * flag for drm_mode_fb_cmd2).
497 */
498 #define DRM_FORMAT_MOD_NONE 0
499
500 /* Intel framebuffer modifiers */
501
502 /*
503 * Intel X-tiling layout
504 *
505 * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
506 * in row-major layout. Within the tile bytes are laid out row-major, with
507 * a platform-dependent stride. On top of that the memory can apply
508 * platform-depending swizzling of some higher address bits into bit6.
509 *
510 * Note that this layout is only accurate on intel gen 8+ or valleyview chipsets.
511 * On earlier platforms the is highly platforms specific and not useful for
512 * cross-driver sharing. It exists since on a given platform it does uniquely
513 * identify the layout in a simple way for i915-specific userspace, which
514 * facilitated conversion of userspace to modifiers. Additionally the exact
515 * format on some really old platforms is not known.
516 */
517 #define I915_FORMAT_MOD_X_TILED fourcc_mod_code(INTEL, 1)
518
519 /*
520 * Intel Y-tiling layout
521 *
522 * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
523 * in row-major layout. Within the tile bytes are laid out in OWORD (16 bytes)
524 * chunks column-major, with a platform-dependent height. On top of that the
525 * memory can apply platform-depending swizzling of some higher address bits
526 * into bit6.
527 *
528 * Note that this layout is only accurate on intel gen 8+ or valleyview chipsets.
529 * On earlier platforms the is highly platforms specific and not useful for
530 * cross-driver sharing. It exists since on a given platform it does uniquely
531 * identify the layout in a simple way for i915-specific userspace, which
532 * facilitated conversion of userspace to modifiers. Additionally the exact
533 * format on some really old platforms is not known.
534 */
535 #define I915_FORMAT_MOD_Y_TILED fourcc_mod_code(INTEL, 2)
536
537 /*
538 * Intel Yf-tiling layout
539 *
540 * This is a tiled layout using 4Kb tiles in row-major layout.
541 * Within the tile pixels are laid out in 16 256 byte units / sub-tiles which
542 * are arranged in four groups (two wide, two high) with column-major layout.
543 * Each group therefore consists out of four 256 byte units, which are also laid
544 * out as 2x2 column-major.
545 * 256 byte units are made out of four 64 byte blocks of pixels, producing
546 * either a square block or a 2:1 unit.
547 * 64 byte blocks of pixels contain four pixel rows of 16 bytes, where the width
548 * in pixel depends on the pixel depth.
549 */
550 #define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
551
552 /*
553 * Intel color control surface (CCS) for render compression
554 *
555 * The framebuffer format must be one of the 8:8:8:8 RGB formats.
556 * The main surface will be plane index 0 and must be Y/Yf-tiled,
557 * the CCS will be plane index 1.
558 *
559 * Each CCS tile matches a 1024x512 pixel area of the main surface.
560 * To match certain aspects of the 3D hardware the CCS is
561 * considered to be made up of normal 128Bx32 Y tiles, Thus
562 * the CCS pitch must be specified in multiples of 128 bytes.
563 *
564 * In reality the CCS tile appears to be a 64Bx64 Y tile, composed
565 * of QWORD (8 bytes) chunks instead of OWORD (16 bytes) chunks.
566 * But that fact is not relevant unless the memory is accessed
567 * directly.
568 */
569 #define I915_FORMAT_MOD_Y_TILED_CCS fourcc_mod_code(INTEL, 4)
570 #define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5)
571
572 /*
573 * Intel color control surfaces (CCS) for Gen-12 render compression.
574 *
575 * The main surface is Y-tiled and at plane index 0, the CCS is linear and
576 * at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
577 * main surface. In other words, 4 bits in CCS map to a main surface cache
578 * line pair. The main surface pitch is required to be a multiple of four
579 * Y-tile widths.
580 */
581 #define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)
582
583 /*
584 * Intel color control surfaces (CCS) for Gen-12 media compression
585 *
586 * The main surface is Y-tiled and at plane index 0, the CCS is linear and
587 * at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
588 * main surface. In other words, 4 bits in CCS map to a main surface cache
589 * line pair. The main surface pitch is required to be a multiple of four
590 * Y-tile widths. For semi-planar formats like NV12, CCS planes follow the
591 * Y and UV planes i.e., planes 0 and 1 are used for Y and UV surfaces,
592 * planes 2 and 3 for the respective CCS.
593 */
594 #define I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS fourcc_mod_code(INTEL, 7)
595
596 /*
597 * Intel Color Control Surface with Clear Color (CCS) for Gen-12 render
598 * compression.
599 *
600 * The main surface is Y-tiled and is at plane index 0 whereas CCS is linear
601 * and at index 1. The clear color is stored at index 2, and the pitch should
602 * be 64 bytes aligned. The clear color structure is 256 bits. The first 128 bits
603 * represents Raw Clear Color Red, Green, Blue and Alpha color each represented
604 * by 32 bits. The raw clear color is consumed by the 3d engine and generates
605 * the converted clear color of size 64 bits. The first 32 bits store the Lower
606 * Converted Clear Color value and the next 32 bits store the Higher Converted
607 * Clear Color value when applicable. The Converted Clear Color values are
608 * consumed by the DE. The last 64 bits are used to store Color Discard Enable
609 * and Depth Clear Value Valid which are ignored by the DE. A CCS cache line
610 * corresponds to an area of 4x1 tiles in the main surface. The main surface
611 * pitch is required to be a multiple of 4 tile widths.
612 */
613 #define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC fourcc_mod_code(INTEL, 8)
614
615 /*
616 * Intel Tile 4 layout
617 *
618 * This is a tiled layout using 4KB tiles in a row-major layout. It has the same
619 * shape as Tile Y at two granularities: 4KB (128B x 32) and 64B (16B x 4). It
620 * only differs from Tile Y at the 256B granularity in between. At this
621 * granularity, Tile Y has a shape of 16B x 32 rows, but this tiling has a shape
622 * of 64B x 8 rows.
623 */
624 #define I915_FORMAT_MOD_4_TILED fourcc_mod_code(INTEL, 9)
625
626 /*
627 * Intel color control surfaces (CCS) for DG2 render compression.
628 *
629 * The main surface is Tile 4 and at plane index 0. The CCS data is stored
630 * outside of the GEM object in a reserved memory area dedicated for the
631 * storage of the CCS data for all RC/RC_CC/MC compressible GEM objects. The
632 * main surface pitch is required to be a multiple of four Tile 4 widths.
633 */
634 #define I915_FORMAT_MOD_4_TILED_DG2_RC_CCS fourcc_mod_code(INTEL, 10)
635
636 /*
637 * Intel color control surfaces (CCS) for DG2 media compression.
638 *
639 * The main surface is Tile 4 and at plane index 0. For semi-planar formats
640 * like NV12, the Y and UV planes are Tile 4 and are located at plane indices
641 * 0 and 1, respectively. The CCS for all planes are stored outside of the
642 * GEM object in a reserved memory area dedicated for the storage of the
643 * CCS data for all RC/RC_CC/MC compressible GEM objects. The main surface
644 * pitch is required to be a multiple of four Tile 4 widths.
645 */
646 #define I915_FORMAT_MOD_4_TILED_DG2_MC_CCS fourcc_mod_code(INTEL, 11)
647
648 /*
649 * Intel Color Control Surface with Clear Color (CCS) for DG2 render compression.
650 *
651 * The main surface is Tile 4 and at plane index 0. The CCS data is stored
652 * outside of the GEM object in a reserved memory area dedicated for the
653 * storage of the CCS data for all RC/RC_CC/MC compressible GEM objects. The
654 * main surface pitch is required to be a multiple of four Tile 4 widths. The
655 * clear color is stored at plane index 1 and the pitch should be 64 bytes
656 * aligned. The format of the 256 bits of clear color data matches the one used
657 * for the I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC modifier, see its description
658 * for details.
659 */
660 #define I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC fourcc_mod_code(INTEL, 12)
661
662 /*
663 * Intel Color Control Surfaces (CCS) for display ver. 14 render compression.
664 *
665 * The main surface is tile4 and at plane index 0, the CCS is linear and
666 * at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
667 * main surface. In other words, 4 bits in CCS map to a main surface cache
668 * line pair. The main surface pitch is required to be a multiple of four
669 * tile4 widths.
670 */
671 #define I915_FORMAT_MOD_4_TILED_MTL_RC_CCS fourcc_mod_code(INTEL, 13)
672
673 /*
674 * Intel Color Control Surfaces (CCS) for display ver. 14 media compression
675 *
676 * The main surface is tile4 and at plane index 0, the CCS is linear and
677 * at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
678 * main surface. In other words, 4 bits in CCS map to a main surface cache
679 * line pair. The main surface pitch is required to be a multiple of four
680 * tile4 widths. For semi-planar formats like NV12, CCS planes follow the
681 * Y and UV planes i.e., planes 0 and 1 are used for Y and UV surfaces,
682 * planes 2 and 3 for the respective CCS.
683 */
684 #define I915_FORMAT_MOD_4_TILED_MTL_MC_CCS fourcc_mod_code(INTEL, 14)
685
686 /*
687 * Intel Color Control Surface with Clear Color (CCS) for display ver. 14 render
688 * compression.
689 *
690 * The main surface is tile4 and is at plane index 0 whereas CCS is linear
691 * and at index 1. The clear color is stored at index 2, and the pitch should
692 * be ignored. The clear color structure is 256 bits. The first 128 bits
693 * represents Raw Clear Color Red, Green, Blue and Alpha color each represented
694 * by 32 bits. The raw clear color is consumed by the 3d engine and generates
695 * the converted clear color of size 64 bits. The first 32 bits store the Lower
696 * Converted Clear Color value and the next 32 bits store the Higher Converted
697 * Clear Color value when applicable. The Converted Clear Color values are
698 * consumed by the DE. The last 64 bits are used to store Color Discard Enable
699 * and Depth Clear Value Valid which are ignored by the DE. A CCS cache line
700 * corresponds to an area of 4x1 tiles in the main surface. The main surface
701 * pitch is required to be a multiple of 4 tile widths.
702 */
703 #define I915_FORMAT_MOD_4_TILED_MTL_RC_CCS_CC fourcc_mod_code(INTEL, 15)
704
705 /*
706 * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
707 *
708 * Macroblocks are laid in a Z-shape, and each pixel data is following the
709 * standard NV12 style.
710 * As for NV12, an image is the result of two frame buffers: one for Y,
711 * one for the interleaved Cb/Cr components (1/2 the height of the Y buffer).
712 * Alignment requirements are (for each buffer):
713 * - multiple of 128 pixels for the width
714 * - multiple of 32 pixels for the height
715 *
716 * For more information: see https://linuxtv.org/downloads/v4l-dvb-apis/re32.html
717 */
718 #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 1)
719
720 /*
721 * Tiled, 16 (pixels) x 16 (lines) - sized macroblocks
722 *
723 * This is a simple tiled layout using tiles of 16x16 pixels in a row-major
724 * layout. For YCbCr formats Cb/Cr components are taken in such a way that
725 * they correspond to their 16x16 luma block.
726 */
727 #define DRM_FORMAT_MOD_SAMSUNG_16_16_TILE fourcc_mod_code(SAMSUNG, 2)
728
729 /*
730 * Qualcomm Compressed Format
731 *
732 * Refers to a compressed variant of the base format that is compressed.
733 * Implementation may be platform and base-format specific.
734 *
735 * Each macrotile consists of m x n (mostly 4 x 4) tiles.
736 * Pixel data pitch/stride is aligned with macrotile width.
737 * Pixel data height is aligned with macrotile height.
738 * Entire pixel data buffer is aligned with 4k(bytes).
739 */
740 #define DRM_FORMAT_MOD_QCOM_COMPRESSED fourcc_mod_code(QCOM, 1)
741
742 /*
743 * Qualcomm Tiled Format
744 *
745 * Similar to DRM_FORMAT_MOD_QCOM_COMPRESSED but not compressed.
746 * Implementation may be platform and base-format specific.
747 *
748 * Each macrotile consists of m x n (mostly 4 x 4) tiles.
749 * Pixel data pitch/stride is aligned with macrotile width.
750 * Pixel data height is aligned with macrotile height.
751 * Entire pixel data buffer is aligned with 4k(bytes).
752 */
753 #define DRM_FORMAT_MOD_QCOM_TILED3 fourcc_mod_code(QCOM, 3)
754
755 /*
756 * Qualcomm Alternate Tiled Format
757 *
758 * Alternate tiled format typically only used within GMEM.
759 * Implementation may be platform and base-format specific.
760 */
761 #define DRM_FORMAT_MOD_QCOM_TILED2 fourcc_mod_code(QCOM, 2)
762
763
764 /* Vivante framebuffer modifiers */
765
766 /*
767 * Vivante 4x4 tiling layout
768 *
769 * This is a simple tiled layout using tiles of 4x4 pixels in a row-major
770 * layout.
771 */
772 #define DRM_FORMAT_MOD_VIVANTE_TILED fourcc_mod_code(VIVANTE, 1)
773
774 /*
775 * Vivante 64x64 super-tiling layout
776 *
777 * This is a tiled layout using 64x64 pixel super-tiles, where each super-tile
778 * contains 8x4 groups of 2x4 tiles of 4x4 pixels (like above) each, all in row-
779 * major layout.
780 *
781 * For more information: see
782 * https://github.com/etnaviv/etna_viv/blob/master/doc/hardware.md#texture-tiling
783 */
784 #define DRM_FORMAT_MOD_VIVANTE_SUPER_TILED fourcc_mod_code(VIVANTE, 2)
785
786 /*
787 * Vivante 4x4 tiling layout for dual-pipe
788 *
789 * Same as the 4x4 tiling layout, except every second 4x4 pixel tile starts at a
790 * different base address. Offsets from the base addresses are therefore halved
791 * compared to the non-split tiled layout.
792 */
793 #define DRM_FORMAT_MOD_VIVANTE_SPLIT_TILED fourcc_mod_code(VIVANTE, 3)
794
795 /*
796 * Vivante 64x64 super-tiling layout for dual-pipe
797 *
798 * Same as the 64x64 super-tiling layout, except every second 4x4 pixel tile
799 * starts at a different base address. Offsets from the base addresses are
800 * therefore halved compared to the non-split super-tiled layout.
801 */
802 #define DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED fourcc_mod_code(VIVANTE, 4)
803
804 /*
805 * Vivante TS (tile-status) buffer modifiers. They can be combined with all of
806 * the color buffer tiling modifiers defined above. When TS is present it's a
807 * separate buffer containing the clear/compression status of each tile. The
808 * modifiers are defined as VIVANTE_MOD_TS_c_s, where c is the color buffer
809 * tile size in bytes covered by one entry in the status buffer and s is the
810 * number of status bits per entry.
811 * We reserve the top 8 bits of the Vivante modifier space for tile status
812 * clear/compression modifiers, as future cores might add some more TS layout
813 * variations.
814 */
815 #define VIVANTE_MOD_TS_64_4 (1ULL << 48)
816 #define VIVANTE_MOD_TS_64_2 (2ULL << 48)
817 #define VIVANTE_MOD_TS_128_4 (3ULL << 48)
818 #define VIVANTE_MOD_TS_256_4 (4ULL << 48)
819 #define VIVANTE_MOD_TS_MASK (0xfULL << 48)
820
821 /*
822 * Vivante compression modifiers. Those depend on a TS modifier being present
823 * as the TS bits get reinterpreted as compression tags instead of simple
824 * clear markers when compression is enabled.
825 */
826 #define VIVANTE_MOD_COMP_DEC400 (1ULL << 52)
827 #define VIVANTE_MOD_COMP_MASK (0xfULL << 52)
828
829 /* Masking out the extension bits will yield the base modifier. */
830 #define VIVANTE_MOD_EXT_MASK (VIVANTE_MOD_TS_MASK | \
831 VIVANTE_MOD_COMP_MASK)
832
833 /* NVIDIA frame buffer modifiers */
834
835 /*
836 * Tegra Tiled Layout, used by Tegra 2, 3 and 4.
837 *
838 * Pixels are arranged in simple tiles of 16 x 16 bytes.
839 */
840 #define DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED fourcc_mod_code(NVIDIA, 1)
841
842 /*
843 * Generalized Block Linear layout, used by desktop GPUs starting with NV50/G80,
844 * and Tegra GPUs starting with Tegra K1.
845 *
846 * Pixels are arranged in Groups of Bytes (GOBs). GOB size and layout varies
847 * based on the architecture generation. GOBs themselves are then arranged in
848 * 3D blocks, with the block dimensions (in terms of GOBs) always being a power
849 * of two, and hence expressible as their log2 equivalent (E.g., "2" represents
850 * a block depth or height of "4").
851 *
852 * Chapter 20 "Pixel Memory Formats" of the Tegra X1 TRM describes this format
853 * in full detail.
854 *
855 * Macro
856 * Bits Param Description
857 * ---- ----- -----------------------------------------------------------------
858 *
859 * 3:0 h log2(height) of each block, in GOBs. Placed here for
860 * compatibility with the existing
861 * DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK()-based modifiers.
862 *
863 * 4:4 - Must be 1, to indicate block-linear layout. Necessary for
864 * compatibility with the existing
865 * DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK()-based modifiers.
866 *
867 * 8:5 - Reserved (To support 3D-surfaces with variable log2(depth) block
868 * size). Must be zero.
869 *
870 * Note there is no log2(width) parameter. Some portions of the
871 * hardware support a block width of two gobs, but it is impractical
872 * to use due to lack of support elsewhere, and has no known
873 * benefits.
874 *
875 * 11:9 - Reserved (To support 2D-array textures with variable array stride
876 * in blocks, specified via log2(tile width in blocks)). Must be
877 * zero.
878 *
879 * 19:12 k Page Kind. This value directly maps to a field in the page
880 * tables of all GPUs >= NV50. It affects the exact layout of bits
881 * in memory and can be derived from the tuple
882 *
883 * (format, GPU model, compression type, samples per pixel)
884 *
885 * Where compression type is defined below. If GPU model were
886 * implied by the format modifier, format, or memory buffer, page
887 * kind would not need to be included in the modifier itself, but
888 * since the modifier should define the layout of the associated
889 * memory buffer independent from any device or other context, it
890 * must be included here.
891 *
892 * 21:20 g GOB Height and Page Kind Generation. The height of a GOB changed
893 * starting with Fermi GPUs. Additionally, the mapping between page
894 * kind and bit layout has changed at various points.
895 *
896 * 0 = Gob Height 8, Fermi - Volta, Tegra K1+ Page Kind mapping
897 * 1 = Gob Height 4, G80 - GT2XX Page Kind mapping
898 * 2 = Gob Height 8, Turing+ Page Kind mapping
899 * 3 = Reserved for future use.
900 *
901 * 22:22 s Sector layout. On Tegra GPUs prior to Xavier, there is a further
902 * bit remapping step that occurs at an even lower level than the
903 * page kind and block linear swizzles. This causes the layout of
904 * surfaces mapped in those SOC's GPUs to be incompatible with the
905 * equivalent mapping on other GPUs in the same system.
906 *
907 * 0 = Tegra K1 - Tegra Parker/TX2 Layout.
908 * 1 = Desktop GPU and Tegra Xavier+ Layout
909 *
910 * 25:23 c Lossless Framebuffer Compression type.
911 *
912 * 0 = none
913 * 1 = ROP/3D, layout 1, exact compression format implied by Page
914 * Kind field
915 * 2 = ROP/3D, layout 2, exact compression format implied by Page
916 * Kind field
917 * 3 = CDE horizontal
918 * 4 = CDE vertical
919 * 5 = Reserved for future use
920 * 6 = Reserved for future use
921 * 7 = Reserved for future use
922 *
923 * 55:25 - Reserved for future use. Must be zero.
924 */
925 #define DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(c, s, g, k, h) \
926 fourcc_mod_code(NVIDIA, (0x10 | \
927 ((h) & 0xf) | \
928 (((k) & 0xff) << 12) | \
929 (((g) & 0x3) << 20) | \
930 (((s) & 0x1) << 22) | \
931 (((c) & 0x7) << 23)))
932
933 /* To grandfather in prior block linear format modifiers to the above layout,
934 * the page kind "0", which corresponds to "pitch/linear" and hence is unusable
935 * with block-linear layouts, is remapped within drivers to the value 0xfe,
936 * which corresponds to the "generic" kind used for simple single-sample
937 * uncompressed color formats on Fermi - Volta GPUs.
938 */
939 static inline __u64
drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)940 drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)
941 {
942 if (!(modifier & 0x10) || (modifier & (0xff << 12)))
943 return modifier;
944 else
945 return modifier | (0xfe << 12);
946 }
947
948 /*
949 * 16Bx2 Block Linear layout, used by Tegra K1 and later
950 *
951 * Pixels are arranged in 64x8 Groups Of Bytes (GOBs). GOBs are then stacked
952 * vertically by a power of 2 (1 to 32 GOBs) to form a block.
953 *
954 * Within a GOB, data is ordered as 16B x 2 lines sectors laid in Z-shape.
955 *
956 * Parameter 'v' is the log2 encoding of the number of GOBs stacked vertically.
957 * Valid values are:
958 *
959 * 0 == ONE_GOB
960 * 1 == TWO_GOBS
961 * 2 == FOUR_GOBS
962 * 3 == EIGHT_GOBS
963 * 4 == SIXTEEN_GOBS
964 * 5 == THIRTYTWO_GOBS
965 *
966 * Chapter 20 "Pixel Memory Formats" of the Tegra X1 TRM describes this format
967 * in full detail.
968 */
969 #define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(v) \
970 DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 0, 0, 0, (v))
971
972 #define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_ONE_GOB \
973 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0)
974 #define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_TWO_GOB \
975 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1)
976 #define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_FOUR_GOB \
977 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2)
978 #define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_EIGHT_GOB \
979 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3)
980 #define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_SIXTEEN_GOB \
981 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4)
982 #define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_THIRTYTWO_GOB \
983 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5)
984
985 /*
986 * Some Broadcom modifiers take parameters, for example the number of
987 * vertical lines in the image. Reserve the lower 32 bits for modifier
988 * type, and the next 24 bits for parameters. Top 8 bits are the
989 * vendor code.
990 */
991 #define __fourcc_mod_broadcom_param_shift 8
992 #define __fourcc_mod_broadcom_param_bits 48
993 #define fourcc_mod_broadcom_code(val, params) \
994 fourcc_mod_code(BROADCOM, ((((__u64)params) << __fourcc_mod_broadcom_param_shift) | val))
995 #define fourcc_mod_broadcom_param(m) \
996 ((int)(((m) >> __fourcc_mod_broadcom_param_shift) & \
997 ((1ULL << __fourcc_mod_broadcom_param_bits) - 1)))
998 #define fourcc_mod_broadcom_mod(m) \
999 ((m) & ~(((1ULL << __fourcc_mod_broadcom_param_bits) - 1) << \
1000 __fourcc_mod_broadcom_param_shift))
1001
1002 /*
1003 * Broadcom VC4 "T" format
1004 *
1005 * This is the primary layout that the V3D GPU can texture from (it
1006 * can't do linear). The T format has:
1007 *
1008 * - 64b utiles of pixels in a raster-order grid according to cpp. It's 4x4
1009 * pixels at 32 bit depth.
1010 *
1011 * - 1k subtiles made of a 4x4 raster-order grid of 64b utiles (so usually
1012 * 16x16 pixels).
1013 *
1014 * - 4k tiles made of a 2x2 grid of 1k subtiles (so usually 32x32 pixels). On
1015 * even 4k tile rows, they're arranged as (BL, TL, TR, BR), and on odd rows
1016 * they're (TR, BR, BL, TL), where bottom left is start of memory.
1017 *
1018 * - an image made of 4k tiles in rows either left-to-right (even rows of 4k
1019 * tiles) or right-to-left (odd rows of 4k tiles).
1020 */
1021 #define DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED fourcc_mod_code(BROADCOM, 1)
1022
1023 /*
1024 * Broadcom SAND format
1025 *
1026 * This is the native format that the H.264 codec block uses. For VC4
1027 * HVS, it is only valid for H.264 (NV12/21) and RGBA modes.
1028 *
1029 * The image can be considered to be split into columns, and the
1030 * columns are placed consecutively into memory. The width of those
1031 * columns can be either 32, 64, 128, or 256 pixels, but in practice
1032 * only 128 pixel columns are used.
1033 *
1034 * The pitch between the start of each column is set to optimally
1035 * switch between SDRAM banks. This is passed as the number of lines
1036 * of column width in the modifier (we can't use the stride value due
1037 * to various core checks that look at it , so you should set the
1038 * stride to width*cpp).
1039 *
1040 * Note that the column height for this format modifier is the same
1041 * for all of the planes, assuming that each column contains both Y
1042 * and UV. Some SAND-using hardware stores UV in a separate tiled
1043 * image from Y to reduce the column height, which is not supported
1044 * with these modifiers.
1045 *
1046 * The DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT modifier is also
1047 * supported for DRM_FORMAT_P030 where the columns remain as 128 bytes
1048 * wide, but as this is a 10 bpp format that translates to 96 pixels.
1049 */
1050
1051 #define DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(v) \
1052 fourcc_mod_broadcom_code(2, v)
1053 #define DRM_FORMAT_MOD_BROADCOM_SAND64_COL_HEIGHT(v) \
1054 fourcc_mod_broadcom_code(3, v)
1055 #define DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(v) \
1056 fourcc_mod_broadcom_code(4, v)
1057 #define DRM_FORMAT_MOD_BROADCOM_SAND256_COL_HEIGHT(v) \
1058 fourcc_mod_broadcom_code(5, v)
1059
1060 #define DRM_FORMAT_MOD_BROADCOM_SAND32 \
1061 DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(0)
1062 #define DRM_FORMAT_MOD_BROADCOM_SAND64 \
1063 DRM_FORMAT_MOD_BROADCOM_SAND64_COL_HEIGHT(0)
1064 #define DRM_FORMAT_MOD_BROADCOM_SAND128 \
1065 DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(0)
1066 #define DRM_FORMAT_MOD_BROADCOM_SAND256 \
1067 DRM_FORMAT_MOD_BROADCOM_SAND256_COL_HEIGHT(0)
1068
1069 /* Broadcom UIF format
1070 *
1071 * This is the common format for the current Broadcom multimedia
1072 * blocks, including V3D 3.x and newer, newer video codecs, and
1073 * displays.
1074 *
1075 * The image consists of utiles (64b blocks), UIF blocks (2x2 utiles),
1076 * and macroblocks (4x4 UIF blocks). Those 4x4 UIF block groups are
1077 * stored in columns, with padding between the columns to ensure that
1078 * moving from one column to the next doesn't hit the same SDRAM page
1079 * bank.
1080 *
1081 * To calculate the padding, it is assumed that each hardware block
1082 * and the software driving it knows the platform's SDRAM page size,
1083 * number of banks, and XOR address, and that it's identical between
1084 * all blocks using the format. This tiling modifier will use XOR as
1085 * necessary to reduce the padding. If a hardware block can't do XOR,
1086 * the assumption is that a no-XOR tiling modifier will be created.
1087 */
1088 #define DRM_FORMAT_MOD_BROADCOM_UIF fourcc_mod_code(BROADCOM, 6)
1089
1090 /*
1091 * Arm Framebuffer Compression (AFBC) modifiers
1092 *
1093 * AFBC is a proprietary lossless image compression protocol and format.
1094 * It provides fine-grained random access and minimizes the amount of data
1095 * transferred between IP blocks.
1096 *
1097 * AFBC has several features which may be supported and/or used, which are
1098 * represented using bits in the modifier. Not all combinations are valid,
1099 * and different devices or use-cases may support different combinations.
1100 *
1101 * Further information on the use of AFBC modifiers can be found in
1102 * Documentation/gpu/afbc.rst
1103 */
1104
1105 /*
1106 * The top 4 bits (out of the 56 bits allotted for specifying vendor specific
1107 * modifiers) denote the category for modifiers. Currently we have three
1108 * categories of modifiers ie AFBC, MISC and AFRC. We can have a maximum of
1109 * sixteen different categories.
1110 */
1111 #define DRM_FORMAT_MOD_ARM_CODE(__type, __val) \
1112 fourcc_mod_code(ARM, ((__u64)(__type) << 52) | ((__val) & 0x000fffffffffffffULL))
1113
1114 #define DRM_FORMAT_MOD_ARM_TYPE_AFBC 0x00
1115 #define DRM_FORMAT_MOD_ARM_TYPE_MISC 0x01
1116
1117 #define DRM_FORMAT_MOD_ARM_AFBC(__afbc_mode) \
1118 DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_AFBC, __afbc_mode)
1119
1120 /*
1121 * AFBC superblock size
1122 *
1123 * Indicates the superblock size(s) used for the AFBC buffer. The buffer
1124 * size (in pixels) must be aligned to a multiple of the superblock size.
1125 * Four lowest significant bits(LSBs) are reserved for block size.
1126 *
1127 * Where one superblock size is specified, it applies to all planes of the
1128 * buffer (e.g. 16x16, 32x8). When multiple superblock sizes are specified,
1129 * the first applies to the Luma plane and the second applies to the Chroma
1130 * plane(s). e.g. (32x8_64x4 means 32x8 Luma, with 64x4 Chroma).
1131 * Multiple superblock sizes are only valid for multi-plane YCbCr formats.
1132 */
1133 #define AFBC_FORMAT_MOD_BLOCK_SIZE_MASK 0xf
1134 #define AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 (1ULL)
1135 #define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 (2ULL)
1136 #define AFBC_FORMAT_MOD_BLOCK_SIZE_64x4 (3ULL)
1137 #define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4 (4ULL)
1138
1139 /*
1140 * AFBC lossless colorspace transform
1141 *
1142 * Indicates that the buffer makes use of the AFBC lossless colorspace
1143 * transform.
1144 */
1145 #define AFBC_FORMAT_MOD_YTR (1ULL << 4)
1146
1147 /*
1148 * AFBC block-split
1149 *
1150 * Indicates that the payload of each superblock is split. The second
1151 * half of the payload is positioned at a predefined offset from the start
1152 * of the superblock payload.
1153 */
1154 #define AFBC_FORMAT_MOD_SPLIT (1ULL << 5)
1155
1156 /*
1157 * AFBC sparse layout
1158 *
1159 * This flag indicates that the payload of each superblock must be stored at a
1160 * predefined position relative to the other superblocks in the same AFBC
1161 * buffer. This order is the same order used by the header buffer. In this mode
1162 * each superblock is given the same amount of space as an uncompressed
1163 * superblock of the particular format would require, rounding up to the next
1164 * multiple of 128 bytes in size.
1165 */
1166 #define AFBC_FORMAT_MOD_SPARSE (1ULL << 6)
1167
1168 /*
1169 * AFBC copy-block restrict
1170 *
1171 * Buffers with this flag must obey the copy-block restriction. The restriction
1172 * is such that there are no copy-blocks referring across the border of 8x8
1173 * blocks. For the subsampled data the 8x8 limitation is also subsampled.
1174 */
1175 #define AFBC_FORMAT_MOD_CBR (1ULL << 7)
1176
1177 /*
1178 * AFBC tiled layout
1179 *
1180 * The tiled layout groups superblocks in 8x8 or 4x4 tiles, where all
1181 * superblocks inside a tile are stored together in memory. 8x8 tiles are used
1182 * for pixel formats up to and including 32 bpp while 4x4 tiles are used for
1183 * larger bpp formats. The order between the tiles is scan line.
1184 * When the tiled layout is used, the buffer size (in pixels) must be aligned
1185 * to the tile size.
1186 */
1187 #define AFBC_FORMAT_MOD_TILED (1ULL << 8)
1188
1189 /*
1190 * AFBC solid color blocks
1191 *
1192 * Indicates that the buffer makes use of solid-color blocks, whereby bandwidth
1193 * can be reduced if a whole superblock is a single color.
1194 */
1195 #define AFBC_FORMAT_MOD_SC (1ULL << 9)
1196
1197 /*
1198 * AFBC double-buffer
1199 *
1200 * Indicates that the buffer is allocated in a layout safe for front-buffer
1201 * rendering.
1202 */
1203 #define AFBC_FORMAT_MOD_DB (1ULL << 10)
1204
1205 /*
1206 * AFBC buffer content hints
1207 *
1208 * Indicates that the buffer includes per-superblock content hints.
1209 */
1210 #define AFBC_FORMAT_MOD_BCH (1ULL << 11)
1211
1212 /* AFBC uncompressed storage mode
1213 *
1214 * Indicates that the buffer is using AFBC uncompressed storage mode.
1215 * In this mode all superblock payloads in the buffer use the uncompressed
1216 * storage mode, which is usually only used for data which cannot be compressed.
1217 * The buffer layout is the same as for AFBC buffers without USM set, this only
1218 * affects the storage mode of the individual superblocks. Note that even a
1219 * buffer without USM set may use uncompressed storage mode for some or all
1220 * superblocks, USM just guarantees it for all.
1221 */
1222 #define AFBC_FORMAT_MOD_USM (1ULL << 12)
1223
1224 /*
1225 * Arm Fixed-Rate Compression (AFRC) modifiers
1226 *
1227 * AFRC is a proprietary fixed rate image compression protocol and format,
1228 * designed to provide guaranteed bandwidth and memory footprint
1229 * reductions in graphics and media use-cases.
1230 *
1231 * AFRC buffers consist of one or more planes, with the same components
1232 * and meaning as an uncompressed buffer using the same pixel format.
1233 *
1234 * Within each plane, the pixel/luma/chroma values are grouped into
1235 * "coding unit" blocks which are individually compressed to a
1236 * fixed size (in bytes). All coding units within a given plane of a buffer
1237 * store the same number of values, and have the same compressed size.
1238 *
1239 * The coding unit size is configurable, allowing different rates of compression.
1240 *
1241 * The start of each AFRC buffer plane must be aligned to an alignment granule which
1242 * depends on the coding unit size.
1243 *
1244 * Coding Unit Size Plane Alignment
1245 * ---------------- ---------------
1246 * 16 bytes 1024 bytes
1247 * 24 bytes 512 bytes
1248 * 32 bytes 2048 bytes
1249 *
1250 * Coding units are grouped into paging tiles. AFRC buffer dimensions must be aligned
1251 * to a multiple of the paging tile dimensions.
1252 * The dimensions of each paging tile depend on whether the buffer is optimised for
1253 * scanline (SCAN layout) or rotated (ROT layout) access.
1254 *
1255 * Layout Paging Tile Width Paging Tile Height
1256 * ------ ----------------- ------------------
1257 * SCAN 16 coding units 4 coding units
1258 * ROT 8 coding units 8 coding units
1259 *
1260 * The dimensions of each coding unit depend on the number of components
1261 * in the compressed plane and whether the buffer is optimised for
1262 * scanline (SCAN layout) or rotated (ROT layout) access.
1263 *
1264 * Number of Components in Plane Layout Coding Unit Width Coding Unit Height
1265 * ----------------------------- --------- ----------------- ------------------
1266 * 1 SCAN 16 samples 4 samples
1267 * Example: 16x4 luma samples in a 'Y' plane
1268 * 16x4 chroma 'V' values, in the 'V' plane of a fully-planar YUV buffer
1269 * ----------------------------- --------- ----------------- ------------------
1270 * 1 ROT 8 samples 8 samples
1271 * Example: 8x8 luma samples in a 'Y' plane
1272 * 8x8 chroma 'V' values, in the 'V' plane of a fully-planar YUV buffer
1273 * ----------------------------- --------- ----------------- ------------------
1274 * 2 DONT CARE 8 samples 4 samples
1275 * Example: 8x4 chroma pairs in the 'UV' plane of a semi-planar YUV buffer
1276 * ----------------------------- --------- ----------------- ------------------
1277 * 3 DONT CARE 4 samples 4 samples
1278 * Example: 4x4 pixels in an RGB buffer without alpha
1279 * ----------------------------- --------- ----------------- ------------------
1280 * 4 DONT CARE 4 samples 4 samples
1281 * Example: 4x4 pixels in an RGB buffer with alpha
1282 */
1283
1284 #define DRM_FORMAT_MOD_ARM_TYPE_AFRC 0x02
1285
1286 #define DRM_FORMAT_MOD_ARM_AFRC(__afrc_mode) \
1287 DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_AFRC, __afrc_mode)
1288
1289 /*
1290 * AFRC coding unit size modifier.
1291 *
1292 * Indicates the number of bytes used to store each compressed coding unit for
1293 * one or more planes in an AFRC encoded buffer. The coding unit size for chrominance
1294 * is the same for both Cb and Cr, which may be stored in separate planes.
1295 *
1296 * AFRC_FORMAT_MOD_CU_SIZE_P0 indicates the number of bytes used to store
1297 * each compressed coding unit in the first plane of the buffer. For RGBA buffers
1298 * this is the only plane, while for semi-planar and fully-planar YUV buffers,
1299 * this corresponds to the luma plane.
1300 *
1301 * AFRC_FORMAT_MOD_CU_SIZE_P12 indicates the number of bytes used to store
1302 * each compressed coding unit in the second and third planes in the buffer.
1303 * For semi-planar and fully-planar YUV buffers, this corresponds to the chroma plane(s).
1304 *
1305 * For single-plane buffers, AFRC_FORMAT_MOD_CU_SIZE_P0 must be specified
1306 * and AFRC_FORMAT_MOD_CU_SIZE_P12 must be zero.
1307 * For semi-planar and fully-planar buffers, both AFRC_FORMAT_MOD_CU_SIZE_P0 and
1308 * AFRC_FORMAT_MOD_CU_SIZE_P12 must be specified.
1309 */
1310 #define AFRC_FORMAT_MOD_CU_SIZE_MASK 0xf
1311 #define AFRC_FORMAT_MOD_CU_SIZE_16 (1ULL)
1312 #define AFRC_FORMAT_MOD_CU_SIZE_24 (2ULL)
1313 #define AFRC_FORMAT_MOD_CU_SIZE_32 (3ULL)
1314
1315 #define AFRC_FORMAT_MOD_CU_SIZE_P0(__afrc_cu_size) (__afrc_cu_size)
1316 #define AFRC_FORMAT_MOD_CU_SIZE_P12(__afrc_cu_size) ((__afrc_cu_size) << 4)
1317
1318 /*
1319 * AFRC scanline memory layout.
1320 *
1321 * Indicates if the buffer uses the scanline-optimised layout
1322 * for an AFRC encoded buffer, otherwise, it uses the rotation-optimised layout.
1323 * The memory layout is the same for all planes.
1324 */
1325 #define AFRC_FORMAT_MOD_LAYOUT_SCAN (1ULL << 8)
1326
1327 /*
1328 * Arm 16x16 Block U-Interleaved modifier
1329 *
1330 * This is used by Arm Mali Utgard and Midgard GPUs. It divides the image
1331 * into 16x16 pixel blocks. Blocks are stored linearly in order, but pixels
1332 * in the block are reordered.
1333 */
1334 #define DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED \
1335 DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_MISC, 1ULL)
1336
1337 /*
1338 * Allwinner tiled modifier
1339 *
1340 * This tiling mode is implemented by the VPU found on all Allwinner platforms,
1341 * codenamed sunxi. It is associated with a YUV format that uses either 2 or 3
1342 * planes.
1343 *
1344 * With this tiling, the luminance samples are disposed in tiles representing
1345 * 32x32 pixels and the chrominance samples in tiles representing 32x64 pixels.
1346 * The pixel order in each tile is linear and the tiles are disposed linearly,
1347 * both in row-major order.
1348 */
1349 #define DRM_FORMAT_MOD_ALLWINNER_TILED fourcc_mod_code(ALLWINNER, 1)
1350
1351 /*
1352 * Amlogic Video Framebuffer Compression modifiers
1353 *
1354 * Amlogic uses a proprietary lossless image compression protocol and format
1355 * for their hardware video codec accelerators, either video decoders or
1356 * video input encoders.
1357 *
1358 * It considerably reduces memory bandwidth while writing and reading
1359 * frames in memory.
1360 *
1361 * The underlying storage is considered to be 3 components, 8bit or 10-bit
1362 * per component YCbCr 420, single plane :
1363 * - DRM_FORMAT_YUV420_8BIT
1364 * - DRM_FORMAT_YUV420_10BIT
1365 *
1366 * The first 8 bits of the mode defines the layout, then the following 8 bits
1367 * defines the options changing the layout.
1368 *
1369 * Not all combinations are valid, and different SoCs may support different
1370 * combinations of layout and options.
1371 */
1372 #define __fourcc_mod_amlogic_layout_mask 0xff
1373 #define __fourcc_mod_amlogic_options_shift 8
1374 #define __fourcc_mod_amlogic_options_mask 0xff
1375
1376 #define DRM_FORMAT_MOD_AMLOGIC_FBC(__layout, __options) \
1377 fourcc_mod_code(AMLOGIC, \
1378 ((__layout) & __fourcc_mod_amlogic_layout_mask) | \
1379 (((__options) & __fourcc_mod_amlogic_options_mask) \
1380 << __fourcc_mod_amlogic_options_shift))
1381
1382 /* Amlogic FBC Layouts */
1383
1384 /*
1385 * Amlogic FBC Basic Layout
1386 *
1387 * The basic layout is composed of:
1388 * - a body content organized in 64x32 superblocks with 4096 bytes per
1389 * superblock in default mode.
1390 * - a 32 bytes per 128x64 header block
1391 *
1392 * This layout is transferrable between Amlogic SoCs supporting this modifier.
1393 */
1394 #define AMLOGIC_FBC_LAYOUT_BASIC (1ULL)
1395
1396 /*
1397 * Amlogic FBC Scatter Memory layout
1398 *
1399 * Indicates the header contains IOMMU references to the compressed
1400 * frames content to optimize memory access and layout.
1401 *
1402 * In this mode, only the header memory address is needed, thus the
1403 * content memory organization is tied to the current producer
1404 * execution and cannot be saved/dumped neither transferrable between
1405 * Amlogic SoCs supporting this modifier.
1406 *
1407 * Due to the nature of the layout, these buffers are not expected to
1408 * be accessible by the user-space clients, but only accessible by the
1409 * hardware producers and consumers.
1410 *
1411 * The user-space clients should expect a failure while trying to mmap
1412 * the DMA-BUF handle returned by the producer.
1413 */
1414 #define AMLOGIC_FBC_LAYOUT_SCATTER (2ULL)
1415
1416 /* Amlogic FBC Layout Options Bit Mask */
1417
1418 /*
1419 * Amlogic FBC Memory Saving mode
1420 *
1421 * Indicates the storage is packed when pixel size is multiple of word
1422 * boundaries, i.e. 8bit should be stored in this mode to save allocation
1423 * memory.
1424 *
1425 * This mode reduces body layout to 3072 bytes per 64x32 superblock with
1426 * the basic layout and 3200 bytes per 64x32 superblock combined with
1427 * the scatter layout.
1428 */
1429 #define AMLOGIC_FBC_OPTION_MEM_SAVING (1ULL << 0)
1430
1431 /*
1432 * AMD modifiers
1433 *
1434 * Memory layout:
1435 *
1436 * without DCC:
1437 * - main surface
1438 *
1439 * with DCC & without DCC_RETILE:
1440 * - main surface in plane 0
1441 * - DCC surface in plane 1 (RB-aligned, pipe-aligned if DCC_PIPE_ALIGN is set)
1442 *
1443 * with DCC & DCC_RETILE:
1444 * - main surface in plane 0
1445 * - displayable DCC surface in plane 1 (not RB-aligned & not pipe-aligned)
1446 * - pipe-aligned DCC surface in plane 2 (RB-aligned & pipe-aligned)
1447 *
1448 * For multi-plane formats the above surfaces get merged into one plane for
1449 * each format plane, based on the required alignment only.
1450 *
1451 * Bits Parameter Notes
1452 * ----- ------------------------ ---------------------------------------------
1453 *
1454 * 7:0 TILE_VERSION Values are AMD_FMT_MOD_TILE_VER_*
1455 * 12:8 TILE Values are AMD_FMT_MOD_TILE_<version>_*
1456 * 13 DCC
1457 * 14 DCC_RETILE
1458 * 15 DCC_PIPE_ALIGN
1459 * 16 DCC_INDEPENDENT_64B
1460 * 17 DCC_INDEPENDENT_128B
1461 * 19:18 DCC_MAX_COMPRESSED_BLOCK Values are AMD_FMT_MOD_DCC_BLOCK_*
1462 * 20 DCC_CONSTANT_ENCODE
1463 * 23:21 PIPE_XOR_BITS Only for some chips
1464 * 26:24 BANK_XOR_BITS Only for some chips
1465 * 29:27 PACKERS Only for some chips
1466 * 32:30 RB Only for some chips
1467 * 35:33 PIPE Only for some chips
1468 * 55:36 - Reserved for future use, must be zero
1469 */
1470 #define AMD_FMT_MOD fourcc_mod_code(AMD, 0)
1471
1472 #define IS_AMD_FMT_MOD(val) (((val) >> 56) == DRM_FORMAT_MOD_VENDOR_AMD)
1473
1474 /* Reserve 0 for GFX8 and older */
1475 #define AMD_FMT_MOD_TILE_VER_GFX9 1
1476 #define AMD_FMT_MOD_TILE_VER_GFX10 2
1477 #define AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS 3
1478 #define AMD_FMT_MOD_TILE_VER_GFX11 4
1479
1480 /*
1481 * 64K_S is the same for GFX9/GFX10/GFX10_RBPLUS and hence has GFX9 as canonical
1482 * version.
1483 */
1484 #define AMD_FMT_MOD_TILE_GFX9_64K_S 9
1485
1486 /*
1487 * 64K_D for non-32 bpp is the same for GFX9/GFX10/GFX10_RBPLUS and hence has
1488 * GFX9 as canonical version.
1489 */
1490 #define AMD_FMT_MOD_TILE_GFX9_64K_D 10
1491 #define AMD_FMT_MOD_TILE_GFX9_64K_S_X 25
1492 #define AMD_FMT_MOD_TILE_GFX9_64K_D_X 26
1493 #define AMD_FMT_MOD_TILE_GFX9_64K_R_X 27
1494 #define AMD_FMT_MOD_TILE_GFX11_256K_R_X 31
1495
1496 #define AMD_FMT_MOD_DCC_BLOCK_64B 0
1497 #define AMD_FMT_MOD_DCC_BLOCK_128B 1
1498 #define AMD_FMT_MOD_DCC_BLOCK_256B 2
1499
1500 #define AMD_FMT_MOD_TILE_VERSION_SHIFT 0
1501 #define AMD_FMT_MOD_TILE_VERSION_MASK 0xFF
1502 #define AMD_FMT_MOD_TILE_SHIFT 8
1503 #define AMD_FMT_MOD_TILE_MASK 0x1F
1504
1505 /* Whether DCC compression is enabled. */
1506 #define AMD_FMT_MOD_DCC_SHIFT 13
1507 #define AMD_FMT_MOD_DCC_MASK 0x1
1508
1509 /*
1510 * Whether to include two DCC surfaces, one which is rb & pipe aligned, and
1511 * one which is not-aligned.
1512 */
1513 #define AMD_FMT_MOD_DCC_RETILE_SHIFT 14
1514 #define AMD_FMT_MOD_DCC_RETILE_MASK 0x1
1515
1516 /* Only set if DCC_RETILE = false */
1517 #define AMD_FMT_MOD_DCC_PIPE_ALIGN_SHIFT 15
1518 #define AMD_FMT_MOD_DCC_PIPE_ALIGN_MASK 0x1
1519
1520 #define AMD_FMT_MOD_DCC_INDEPENDENT_64B_SHIFT 16
1521 #define AMD_FMT_MOD_DCC_INDEPENDENT_64B_MASK 0x1
1522 #define AMD_FMT_MOD_DCC_INDEPENDENT_128B_SHIFT 17
1523 #define AMD_FMT_MOD_DCC_INDEPENDENT_128B_MASK 0x1
1524 #define AMD_FMT_MOD_DCC_MAX_COMPRESSED_BLOCK_SHIFT 18
1525 #define AMD_FMT_MOD_DCC_MAX_COMPRESSED_BLOCK_MASK 0x3
1526
1527 /*
1528 * DCC supports embedding some clear colors directly in the DCC surface.
1529 * However, on older GPUs the rendering HW ignores the embedded clear color
1530 * and prefers the driver provided color. This necessitates doing a fastclear
1531 * eliminate operation before a process transfers control.
1532 *
1533 * If this bit is set that means the fastclear eliminate is not needed for these
1534 * embeddable colors.
1535 */
1536 #define AMD_FMT_MOD_DCC_CONSTANT_ENCODE_SHIFT 20
1537 #define AMD_FMT_MOD_DCC_CONSTANT_ENCODE_MASK 0x1
1538
1539 /*
1540 * The below fields are for accounting for per GPU differences. These are only
1541 * relevant for GFX9 and later and if the tile field is *_X/_T.
1542 *
1543 * PIPE_XOR_BITS = always needed
1544 * BANK_XOR_BITS = only for TILE_VER_GFX9
1545 * PACKERS = only for TILE_VER_GFX10_RBPLUS
1546 * RB = only for TILE_VER_GFX9 & DCC
1547 * PIPE = only for TILE_VER_GFX9 & DCC & (DCC_RETILE | DCC_PIPE_ALIGN)
1548 */
1549 #define AMD_FMT_MOD_PIPE_XOR_BITS_SHIFT 21
1550 #define AMD_FMT_MOD_PIPE_XOR_BITS_MASK 0x7
1551 #define AMD_FMT_MOD_BANK_XOR_BITS_SHIFT 24
1552 #define AMD_FMT_MOD_BANK_XOR_BITS_MASK 0x7
1553 #define AMD_FMT_MOD_PACKERS_SHIFT 27
1554 #define AMD_FMT_MOD_PACKERS_MASK 0x7
1555 #define AMD_FMT_MOD_RB_SHIFT 30
1556 #define AMD_FMT_MOD_RB_MASK 0x7
1557 #define AMD_FMT_MOD_PIPE_SHIFT 33
1558 #define AMD_FMT_MOD_PIPE_MASK 0x7
1559
1560 #define AMD_FMT_MOD_SET(field, value) \
1561 ((__u64)(value) << AMD_FMT_MOD_##field##_SHIFT)
1562 #define AMD_FMT_MOD_GET(field, value) \
1563 (((value) >> AMD_FMT_MOD_##field##_SHIFT) & AMD_FMT_MOD_##field##_MASK)
1564 #define AMD_FMT_MOD_CLEAR(field) \
1565 (~((__u64)AMD_FMT_MOD_##field##_MASK << AMD_FMT_MOD_##field##_SHIFT))
1566
1567 #if defined(__cplusplus)
1568 }
1569 #endif
1570
1571 #endif /* DRM_FOURCC_H */
1572