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/**************************************************************************
2
 *
3
 * Copyright © 2008-2012 VMware, Inc., Palo Alto, CA., USA
4
 * All Rights Reserved.
5
 *
6
 * Permission is hereby granted, free of charge, to any person obtaining a
7
 * copy of this software and associated documentation files (the
8
 * "Software"), to deal in the Software without restriction, including
9
 * without limitation the rights to use, copy, modify, merge, publish,
10
 * distribute, sub license, and/or sell copies of the Software, and to
11
 * permit persons to whom the Software is furnished to do so, subject to
12
 * the following conditions:
13
 *
14
 * The above copyright notice and this permission notice (including the
15
 * next paragraph) shall be included in all copies or substantial portions
16
 * of the Software.
17
 *
18
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25
 *
26
 **************************************************************************/
27
 
28
#ifdef __KERNEL__
29
 
30
#include 
31
#define surf_size_struct struct drm_vmw_size
32
 
33
#else /* __KERNEL__ */
34
 
35
#ifndef ARRAY_SIZE
36
#define ARRAY_SIZE(_A) (sizeof(_A) / sizeof((_A)[0]))
37
#endif /* ARRAY_SIZE */
38
 
39
#define DIV_ROUND_UP(x, y)  (((x) + (y) - 1) / (y))
40
#define max_t(type, x, y)  ((x) > (y) ? (x) : (y))
41
#define surf_size_struct SVGA3dSize
42
#define u32 uint32
43
 
44
#endif /* __KERNEL__ */
45
 
46
#include "svga3d_reg.h"
47
 
48
/*
49
 * enum svga3d_block_desc describes the active data channels in a block.
50
 *
51
 * There can be at-most four active channels in a block:
52
 *    1. Red, bump W, luminance and depth are stored in the first channel.
53
 *    2. Green, bump V and stencil are stored in the second channel.
54
 *    3. Blue and bump U are stored in the third channel.
55
 *    4. Alpha and bump Q are stored in the fourth channel.
56
 *
57
 * Block channels can be used to store compressed and buffer data:
58
 *    1. For compressed formats, only the data channel is used and its size
59
 *       is equal to that of a singular block in the compression scheme.
60
 *    2. For buffer formats, only the data channel is used and its size is
61
 *       exactly one byte in length.
62
 *    3. In each case the bit depth represent the size of a singular block.
63
 *
64
 * Note: Compressed and IEEE formats do not use the bitMask structure.
65
 */
66
 
67
enum svga3d_block_desc {
68
	SVGA3DBLOCKDESC_NONE        = 0,         /* No channels are active */
69
	SVGA3DBLOCKDESC_BLUE        = 1 << 0,    /* Block with red channel
70
						    data */
71
	SVGA3DBLOCKDESC_U           = 1 << 0,    /* Block with bump U channel
72
						    data */
73
	SVGA3DBLOCKDESC_UV_VIDEO    = 1 << 7,    /* Block with alternating video
74
						    U and V */
75
	SVGA3DBLOCKDESC_GREEN       = 1 << 1,    /* Block with green channel
76
						    data */
77
	SVGA3DBLOCKDESC_V           = 1 << 1,    /* Block with bump V channel
78
						    data */
79
	SVGA3DBLOCKDESC_STENCIL     = 1 << 1,    /* Block with a stencil
80
						    channel */
81
	SVGA3DBLOCKDESC_RED         = 1 << 2,    /* Block with blue channel
82
						    data */
83
	SVGA3DBLOCKDESC_W           = 1 << 2,    /* Block with bump W channel
84
						    data */
85
	SVGA3DBLOCKDESC_LUMINANCE   = 1 << 2,    /* Block with luminance channel
86
						    data */
87
	SVGA3DBLOCKDESC_Y           = 1 << 2,    /* Block with video luminance
88
						    data */
89
	SVGA3DBLOCKDESC_DEPTH       = 1 << 2,    /* Block with depth channel */
90
	SVGA3DBLOCKDESC_ALPHA       = 1 << 3,    /* Block with an alpha
91
						    channel */
92
	SVGA3DBLOCKDESC_Q           = 1 << 3,    /* Block with bump Q channel
93
						    data */
94
	SVGA3DBLOCKDESC_BUFFER      = 1 << 4,    /* Block stores 1 byte of
95
						    data */
96
	SVGA3DBLOCKDESC_COMPRESSED  = 1 << 5,    /* Block stores n bytes of
97
						    data depending on the
98
						    compression method used */
99
	SVGA3DBLOCKDESC_IEEE_FP     = 1 << 6,    /* Block stores data in an IEEE
100
						    floating point
101
						    representation in
102
						    all channels */
103
	SVGA3DBLOCKDESC_PLANAR_YUV  = 1 << 8,    /* Three separate blocks store
104
						    data. */
105
	SVGA3DBLOCKDESC_U_VIDEO     = 1 << 9,    /* Block with U video data */
106
	SVGA3DBLOCKDESC_V_VIDEO     = 1 << 10,   /* Block with V video data */
107
	SVGA3DBLOCKDESC_EXP         = 1 << 11,   /* Shared exponent */
108
	SVGA3DBLOCKDESC_SRGB        = 1 << 12,   /* Data is in sRGB format */
109
	SVGA3DBLOCKDESC_2PLANAR_YUV = 1 << 13,   /* 2 planes of Y, UV,
110
						    e.g., NV12. */
111
	SVGA3DBLOCKDESC_3PLANAR_YUV = 1 << 14,   /* 3 planes of separate
112
						    Y, U, V, e.g., YV12. */
113
 
114
	SVGA3DBLOCKDESC_RG         = SVGA3DBLOCKDESC_RED |
115
	SVGA3DBLOCKDESC_GREEN,
116
	SVGA3DBLOCKDESC_RGB        = SVGA3DBLOCKDESC_RG |
117
	SVGA3DBLOCKDESC_BLUE,
118
	SVGA3DBLOCKDESC_RGB_SRGB   = SVGA3DBLOCKDESC_RGB |
119
	SVGA3DBLOCKDESC_SRGB,
120
	SVGA3DBLOCKDESC_RGBA       = SVGA3DBLOCKDESC_RGB |
121
	SVGA3DBLOCKDESC_ALPHA,
122
	SVGA3DBLOCKDESC_RGBA_SRGB  = SVGA3DBLOCKDESC_RGBA |
123
	SVGA3DBLOCKDESC_SRGB,
124
	SVGA3DBLOCKDESC_UV         = SVGA3DBLOCKDESC_U |
125
	SVGA3DBLOCKDESC_V,
126
	SVGA3DBLOCKDESC_UVL        = SVGA3DBLOCKDESC_UV |
127
	SVGA3DBLOCKDESC_LUMINANCE,
128
	SVGA3DBLOCKDESC_UVW        = SVGA3DBLOCKDESC_UV |
129
	SVGA3DBLOCKDESC_W,
130
	SVGA3DBLOCKDESC_UVWA       = SVGA3DBLOCKDESC_UVW |
131
	SVGA3DBLOCKDESC_ALPHA,
132
	SVGA3DBLOCKDESC_UVWQ       = SVGA3DBLOCKDESC_U |
133
	SVGA3DBLOCKDESC_V |
134
	SVGA3DBLOCKDESC_W |
135
	SVGA3DBLOCKDESC_Q,
136
	SVGA3DBLOCKDESC_LA         = SVGA3DBLOCKDESC_LUMINANCE |
137
	SVGA3DBLOCKDESC_ALPHA,
138
	SVGA3DBLOCKDESC_R_FP       = SVGA3DBLOCKDESC_RED |
139
	SVGA3DBLOCKDESC_IEEE_FP,
140
	SVGA3DBLOCKDESC_RG_FP      = SVGA3DBLOCKDESC_R_FP |
141
	SVGA3DBLOCKDESC_GREEN,
142
	SVGA3DBLOCKDESC_RGB_FP     = SVGA3DBLOCKDESC_RG_FP |
143
	SVGA3DBLOCKDESC_BLUE,
144
	SVGA3DBLOCKDESC_RGBA_FP    = SVGA3DBLOCKDESC_RGB_FP |
145
	SVGA3DBLOCKDESC_ALPHA,
146
	SVGA3DBLOCKDESC_DS         = SVGA3DBLOCKDESC_DEPTH |
147
	SVGA3DBLOCKDESC_STENCIL,
148
	SVGA3DBLOCKDESC_YUV        = SVGA3DBLOCKDESC_UV_VIDEO |
149
	SVGA3DBLOCKDESC_Y,
150
	SVGA3DBLOCKDESC_AYUV       = SVGA3DBLOCKDESC_ALPHA |
151
	SVGA3DBLOCKDESC_Y |
152
	SVGA3DBLOCKDESC_U_VIDEO |
153
	SVGA3DBLOCKDESC_V_VIDEO,
154
	SVGA3DBLOCKDESC_RGBE       = SVGA3DBLOCKDESC_RGB |
155
	SVGA3DBLOCKDESC_EXP,
156
	SVGA3DBLOCKDESC_COMPRESSED_SRGB = SVGA3DBLOCKDESC_COMPRESSED |
157
	SVGA3DBLOCKDESC_SRGB,
158
	SVGA3DBLOCKDESC_NV12       = SVGA3DBLOCKDESC_PLANAR_YUV |
159
	SVGA3DBLOCKDESC_2PLANAR_YUV,
160
	SVGA3DBLOCKDESC_YV12       = SVGA3DBLOCKDESC_PLANAR_YUV |
161
	SVGA3DBLOCKDESC_3PLANAR_YUV,
162
};
163
 
164
/*
165
 * SVGA3dSurfaceDesc describes the actual pixel data.
166
 *
167
 * This structure provides the following information:
168
 *    1. Block description.
169
 *    2. Dimensions of a block in the surface.
170
 *    3. Size of block in bytes.
171
 *    4. Bit depth of the pixel data.
172
 *    5. Channel bit depths and masks (if applicable).
173
 */
174
#define SVGA3D_CHANNEL_DEF(type)		\
175
	struct {				\
176
		union {				\
177
			type blue;              \
178
			type u;                 \
179
			type uv_video;          \
180
			type u_video;           \
181
		};				\
182
		union {				\
183
			type green;             \
184
			type v;                 \
185
			type stencil;           \
186
			type v_video;           \
187
		};				\
188
		union {				\
189
			type red;               \
190
			type w;                 \
191
			type luminance;         \
192
			type y;                 \
193
			type depth;             \
194
			type data;              \
195
		};				\
196
		union {				\
197
			type alpha;             \
198
			type q;                 \
199
			type exp;               \
200
		};				\
201
	}
202
 
203
struct svga3d_surface_desc {
204
	enum svga3d_block_desc block_desc;
205
	surf_size_struct block_size;
206
	u32 bytes_per_block;
207
	u32 pitch_bytes_per_block;
208
 
209
	struct {
210
		u32 total;
211
		SVGA3D_CHANNEL_DEF(uint8);
212
	} bit_depth;
213
 
214
	struct {
215
		SVGA3D_CHANNEL_DEF(uint8);
216
	} bit_offset;
217
};
218
 
219
static const struct svga3d_surface_desc svga3d_surface_descs[] = {
220
	{SVGA3DBLOCKDESC_NONE,
221
	 {1, 1, 1},  0, 0, {0, {{0}, {0}, {0}, {0} } },
222
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_FORMAT_INVALID */
223
 
224
	{SVGA3DBLOCKDESC_RGB,
225
	 {1, 1, 1},  4, 4, {24, {{8}, {8}, {8}, {0} } },
226
	 {{{0}, {8}, {16}, {24} } } },   /* SVGA3D_X8R8G8B8 */
227
 
228
	{SVGA3DBLOCKDESC_RGBA,
229
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
230
	 {{{0}, {8}, {16}, {24} } } },   /* SVGA3D_A8R8G8B8 */
231
 
232
	{SVGA3DBLOCKDESC_RGB,
233
	 {1, 1, 1},  2, 2, {16, {{5}, {6}, {5}, {0} } },
234
	 {{{0}, {5}, {11}, {0} } } },    /* SVGA3D_R5G6B5 */
235
 
236
	{SVGA3DBLOCKDESC_RGB,
237
	 {1, 1, 1},  2, 2, {15, {{5}, {5}, {5}, {0} } },
238
	 {{{0}, {5}, {10}, {0} } } },    /* SVGA3D_X1R5G5B5 */
239
 
240
	{SVGA3DBLOCKDESC_RGBA,
241
	 {1, 1, 1},  2, 2, {16, {{5}, {5}, {5}, {1} } },
242
	 {{{0}, {5}, {10}, {15} } } },   /* SVGA3D_A1R5G5B5 */
243
 
244
	{SVGA3DBLOCKDESC_RGBA,
245
	 {1, 1, 1},  2, 2, {16, {{4}, {4}, {4}, {4} } },
246
	 {{{0}, {4}, {8}, {12} } } },    /* SVGA3D_A4R4G4B4 */
247
 
248
	{SVGA3DBLOCKDESC_DEPTH,
249
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {32}, {0} } },
250
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_Z_D32 */
251
 
252
	{SVGA3DBLOCKDESC_DEPTH,
253
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
254
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_Z_D16 */
255
 
256
	{SVGA3DBLOCKDESC_DS,
257
	 {1, 1, 1},  4, 4, {32, {{0}, {8}, {24}, {0} } },
258
	 {{{0}, {24}, {0}, {0} } } },    /* SVGA3D_Z_D24S8 */
259
 
260
	{SVGA3DBLOCKDESC_DS,
261
	 {1, 1, 1},  2, 2, {16, {{0}, {1}, {15}, {0} } },
262
	 {{{0}, {15}, {0}, {0} } } },    /* SVGA3D_Z_D15S1 */
263
 
264
	{SVGA3DBLOCKDESC_LUMINANCE,
265
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
266
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_LUMINANCE8 */
267
 
268
	{SVGA3DBLOCKDESC_LA,
269
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {4}, {4} } },
270
	 {{{0}, {0}, {0}, {4} } } },     /* SVGA3D_LUMINANCE4_ALPHA4 */
271
 
272
	{SVGA3DBLOCKDESC_LUMINANCE,
273
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
274
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_LUMINANCE16 */
275
 
276
	{SVGA3DBLOCKDESC_LA,
277
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {8}, {8} } },
278
	 {{{0}, {0}, {0}, {8} } } },     /* SVGA3D_LUMINANCE8_ALPHA8 */
279
 
280
	{SVGA3DBLOCKDESC_COMPRESSED,
281
	 {4, 4, 1},  8, 8, {64, {{0}, {0}, {64}, {0} } },
282
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_DXT1 */
283
 
284
	{SVGA3DBLOCKDESC_COMPRESSED,
285
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
286
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_DXT2 */
287
 
288
	{SVGA3DBLOCKDESC_COMPRESSED,
289
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
290
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_DXT3 */
291
 
292
	{SVGA3DBLOCKDESC_COMPRESSED,
293
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
294
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_DXT4 */
295
 
296
	{SVGA3DBLOCKDESC_COMPRESSED,
297
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
298
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_DXT5 */
299
 
300
	{SVGA3DBLOCKDESC_UV,
301
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {8}, {8} } },
302
	 {{{0}, {0}, {0}, {8} } } },     /* SVGA3D_BUMPU8V8 */
303
 
304
	{SVGA3DBLOCKDESC_UVL,
305
	 {1, 1, 1},  2, 2, {16, {{5}, {5}, {6}, {0} } },
306
	 {{{11}, {6}, {0}, {0} } } },    /* SVGA3D_BUMPL6V5U5 */
307
 
308
	{SVGA3DBLOCKDESC_UVL,
309
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {0} } },
310
	 {{{16}, {8}, {0}, {0} } } },    /* SVGA3D_BUMPX8L8V8U8 */
311
 
312
	{SVGA3DBLOCKDESC_UVL,
313
	 {1, 1, 1},  3, 3, {24, {{8}, {8}, {8}, {0} } },
314
	 {{{16}, {8}, {0}, {0} } } },    /* SVGA3D_BUMPL8V8U8 */
315
 
316
	{SVGA3DBLOCKDESC_RGBA_FP,
317
	 {1, 1, 1},  8, 8, {64, {{16}, {16}, {16}, {16} } },
318
	 {{{32}, {16}, {0}, {48} } } },  /* SVGA3D_ARGB_S10E5 */
319
 
320
	{SVGA3DBLOCKDESC_RGBA_FP,
321
	 {1, 1, 1},  16, 16, {128, {{32}, {32}, {32}, {32} } },
322
	 {{{64}, {32}, {0}, {96} } } },  /* SVGA3D_ARGB_S23E8 */
323
 
324
	{SVGA3DBLOCKDESC_RGBA,
325
	 {1, 1, 1},  4, 4, {32, {{10}, {10}, {10}, {2} } },
326
	 {{{0}, {10}, {20}, {30} } } },  /* SVGA3D_A2R10G10B10 */
327
 
328
	{SVGA3DBLOCKDESC_UV,
329
	 {1, 1, 1},  2, 2, {16, {{8}, {8}, {0}, {0} } },
330
	 {{{8}, {0}, {0}, {0} } } },     /* SVGA3D_V8U8 */
331
 
332
	{SVGA3DBLOCKDESC_UVWQ,
333
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
334
	 {{{24}, {16}, {8}, {0} } } },   /* SVGA3D_Q8W8V8U8 */
335
 
336
	{SVGA3DBLOCKDESC_UV,
337
	 {1, 1, 1},  2, 2, {16, {{8}, {8}, {0}, {0} } },
338
	 {{{8}, {0}, {0}, {0} } } },     /* SVGA3D_CxV8U8 */
339
 
340
	{SVGA3DBLOCKDESC_UVL,
341
	 {1, 1, 1},  4, 4, {24, {{8}, {8}, {8}, {0} } },
342
	 {{{16}, {8}, {0}, {0} } } },    /* SVGA3D_X8L8V8U8 */
343
 
344
	{SVGA3DBLOCKDESC_UVWA,
345
	 {1, 1, 1},  4, 4, {32, {{10}, {10}, {10}, {2} } },
346
	 {{{0}, {10}, {20}, {30} } } },  /* SVGA3D_A2W10V10U10 */
347
 
348
	{SVGA3DBLOCKDESC_ALPHA,
349
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {0}, {8} } },
350
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_ALPHA8 */
351
 
352
	{SVGA3DBLOCKDESC_R_FP,
353
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
354
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R_S10E5 */
355
 
356
	{SVGA3DBLOCKDESC_R_FP,
357
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {32}, {0} } },
358
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R_S23E8 */
359
 
360
	{SVGA3DBLOCKDESC_RG_FP,
361
	 {1, 1, 1},  4, 4, {32, {{0}, {16}, {16}, {0} } },
362
	 {{{0}, {16}, {0}, {0} } } },    /* SVGA3D_RG_S10E5 */
363
 
364
	{SVGA3DBLOCKDESC_RG_FP,
365
	 {1, 1, 1},  8, 8, {64, {{0}, {32}, {32}, {0} } },
366
	 {{{0}, {32}, {0}, {0} } } },    /* SVGA3D_RG_S23E8 */
367
 
368
	{SVGA3DBLOCKDESC_BUFFER,
369
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
370
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BUFFER */
371
 
372
	{SVGA3DBLOCKDESC_DEPTH,
373
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {24}, {0} } },
374
	 {{{0}, {24}, {0}, {0} } } },    /* SVGA3D_Z_D24X8 */
375
 
376
	{SVGA3DBLOCKDESC_UV,
377
	 {1, 1, 1},  4, 4, {32, {{16}, {16}, {0}, {0} } },
378
	 {{{16}, {0}, {0}, {0} } } },    /* SVGA3D_V16U16 */
379
 
380
	{SVGA3DBLOCKDESC_RG,
381
	 {1, 1, 1},  4, 4, {32, {{0}, {16}, {16}, {0} } },
382
	 {{{0}, {0}, {16}, {0} } } },    /* SVGA3D_G16R16 */
383
 
384
	{SVGA3DBLOCKDESC_RGBA,
385
	 {1, 1, 1},  8, 8, {64, {{16}, {16}, {16}, {16} } },
386
	 {{{32}, {16}, {0}, {48} } } },  /* SVGA3D_A16B16G16R16 */
387
 
388
	{SVGA3DBLOCKDESC_YUV,
389
	 {1, 1, 1},  2, 2, {16, {{8}, {0}, {8}, {0} } },
390
	 {{{0}, {0}, {8}, {0} } } },     /* SVGA3D_UYVY */
391
 
392
	{SVGA3DBLOCKDESC_YUV,
393
	 {1, 1, 1},  2, 2, {16, {{8}, {0}, {8}, {0} } },
394
	 {{{8}, {0}, {0}, {0} } } },     /* SVGA3D_YUY2 */
395
 
396
	{SVGA3DBLOCKDESC_NV12,
397
	 {2, 2, 1},  6, 2, {48, {{0}, {0}, {48}, {0} } },
398
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_NV12 */
399
 
400
	{SVGA3DBLOCKDESC_AYUV,
401
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
402
	 {{{0}, {8}, {16}, {24} } } },   /* SVGA3D_AYUV */
403
 
404
	{SVGA3DBLOCKDESC_RGBA,
405
	 {1, 1, 1},  16, 16, {128, {{32}, {32}, {32}, {32} } },
406
	 {{{64}, {32}, {0}, {96} } } },  /* SVGA3D_R32G32B32A32_TYPELESS */
407
 
408
	{SVGA3DBLOCKDESC_RGBA,
409
	 {1, 1, 1},  16, 16, {128, {{32}, {32}, {32}, {32} } },
410
	 {{{64}, {32}, {0}, {96} } } },  /* SVGA3D_R32G32B32A32_UINT */
411
 
412
	{SVGA3DBLOCKDESC_UVWQ,
413
	 {1, 1, 1},  16, 16, {128, {{32}, {32}, {32}, {32} } },
414
	 {{{64}, {32}, {0}, {96} } } },  /* SVGA3D_R32G32B32A32_SINT */
415
 
416
	{SVGA3DBLOCKDESC_RGB,
417
	 {1, 1, 1},  12, 12, {96, {{32}, {32}, {32}, {0} } },
418
	 {{{64}, {32}, {0}, {0} } } },   /* SVGA3D_R32G32B32_TYPELESS */
419
 
420
	{SVGA3DBLOCKDESC_RGB_FP,
421
	 {1, 1, 1},  12, 12, {96, {{32}, {32}, {32}, {0} } },
422
	 {{{64}, {32}, {0}, {0} } } },   /* SVGA3D_R32G32B32_FLOAT */
423
 
424
	{SVGA3DBLOCKDESC_RGB,
425
	 {1, 1, 1},  12, 12, {96, {{32}, {32}, {32}, {0} } },
426
	 {{{64}, {32}, {0}, {0} } } },   /* SVGA3D_R32G32B32_UINT */
427
 
428
	{SVGA3DBLOCKDESC_UVW,
429
	 {1, 1, 1},  12, 12, {96, {{32}, {32}, {32}, {0} } },
430
	 {{{64}, {32}, {0}, {0} } } },   /* SVGA3D_R32G32B32_SINT */
431
 
432
	{SVGA3DBLOCKDESC_RGBA,
433
	 {1, 1, 1},  8, 8, {64, {{16}, {16}, {16}, {16} } },
434
	 {{{32}, {16}, {0}, {48} } } },  /* SVGA3D_R16G16B16A16_TYPELESS */
435
 
436
	{SVGA3DBLOCKDESC_RGBA,
437
	 {1, 1, 1},  8, 8, {64, {{16}, {16}, {16}, {16} } },
438
	 {{{32}, {16}, {0}, {48} } } },  /* SVGA3D_R16G16B16A16_UINT */
439
 
440
	{SVGA3DBLOCKDESC_UVWQ,
441
	 {1, 1, 1},  8, 8, {64, {{16}, {16}, {16}, {16} } },
442
	 {{{32}, {16}, {0}, {48} } } },  /* SVGA3D_R16G16B16A16_SNORM */
443
 
444
	{SVGA3DBLOCKDESC_UVWQ,
445
	 {1, 1, 1},  8, 8, {64, {{16}, {16}, {16}, {16} } },
446
	 {{{32}, {16}, {0}, {48} } } },  /* SVGA3D_R16G16B16A16_SINT */
447
 
448
	{SVGA3DBLOCKDESC_RG,
449
	 {1, 1, 1},  8, 8, {64, {{0}, {32}, {32}, {0} } },
450
	 {{{0}, {32}, {0}, {0} } } },    /* SVGA3D_R32G32_TYPELESS */
451
 
452
	{SVGA3DBLOCKDESC_RG,
453
	 {1, 1, 1},  8, 8, {64, {{0}, {32}, {32}, {0} } },
454
	 {{{0}, {32}, {0}, {0} } } },    /* SVGA3D_R32G32_UINT */
455
 
456
	{SVGA3DBLOCKDESC_UV,
457
	 {1, 1, 1},  8, 8, {64, {{0}, {32}, {32}, {0} } },
458
	 {{{0}, {32}, {0}, {0} } } },    /* SVGA3D_R32G32_SINT */
459
 
460
	{SVGA3DBLOCKDESC_RG,
461
	 {1, 1, 1},  8, 8, {64, {{0}, {8}, {32}, {0} } },
462
	 {{{0}, {32}, {0}, {0} } } },    /* SVGA3D_R32G8X24_TYPELESS */
463
 
464
	{SVGA3DBLOCKDESC_DS,
465
	 {1, 1, 1},  8, 8, {64, {{0}, {8}, {32}, {0} } },
466
	 {{{0}, {32}, {0}, {0} } } },    /* SVGA3D_D32_FLOAT_S8X24_UINT */
467
 
468
	{SVGA3DBLOCKDESC_R_FP,
469
	 {1, 1, 1},  8, 8, {64, {{0}, {0}, {32}, {0} } },
470
	 {{{0}, {0}, {0}, {0} } } },    /* SVGA3D_R32_FLOAT_X8_X24_TYPELESS */
471
 
472
	{SVGA3DBLOCKDESC_GREEN,
473
	 {1, 1, 1},  8, 8, {64, {{0}, {8}, {0}, {0} } },
474
	 {{{0}, {32}, {0}, {0} } } },    /* SVGA3D_X32_TYPELESS_G8X24_UINT */
475
 
476
	{SVGA3DBLOCKDESC_RGBA,
477
	 {1, 1, 1},  4, 4, {32, {{10}, {10}, {10}, {2} } },
478
	 {{{0}, {10}, {20}, {30} } } },  /* SVGA3D_R10G10B10A2_TYPELESS */
479
 
480
	{SVGA3DBLOCKDESC_RGBA,
481
	 {1, 1, 1},  4, 4, {32, {{10}, {10}, {10}, {2} } },
482
	 {{{0}, {10}, {20}, {30} } } },  /* SVGA3D_R10G10B10A2_UINT */
483
 
484
	{SVGA3DBLOCKDESC_RGB_FP,
485
	 {1, 1, 1},  4, 4, {32, {{10}, {11}, {11}, {0} } },
486
	 {{{0}, {10}, {21}, {0} } } },  /* SVGA3D_R11G11B10_FLOAT */
487
 
488
	{SVGA3DBLOCKDESC_RGBA,
489
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
490
	 {{{16}, {8}, {0}, {24} } } },   /* SVGA3D_R8G8B8A8_TYPELESS */
491
 
492
	{SVGA3DBLOCKDESC_RGBA,
493
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
494
	 {{{16}, {8}, {0}, {24} } } },   /* SVGA3D_R8G8B8A8_UNORM */
495
 
496
	{SVGA3DBLOCKDESC_RGBA_SRGB,
497
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
498
	 {{{16}, {8}, {0}, {24} } } },   /* SVGA3D_R8G8B8A8_UNORM_SRGB */
499
 
500
	{SVGA3DBLOCKDESC_RGBA,
501
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
502
	 {{{16}, {8}, {0}, {24} } } },   /* SVGA3D_R8G8B8A8_UINT */
503
 
504
	{SVGA3DBLOCKDESC_RGBA,
505
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
506
	 {{{16}, {8}, {0}, {24} } } },   /* SVGA3D_R8G8B8A8_SINT */
507
 
508
	{SVGA3DBLOCKDESC_RG,
509
	 {1, 1, 1},  4, 4, {32, {{0}, {16}, {16}, {0} } },
510
	 {{{0}, {16}, {0}, {0} } } },    /* SVGA3D_R16G16_TYPELESS */
511
 
512
	{SVGA3DBLOCKDESC_RG_FP,
513
	 {1, 1, 1},  4, 4, {32, {{0}, {16}, {16}, {0} } },
514
	 {{{0}, {16}, {0}, {0} } } },    /* SVGA3D_R16G16_UINT */
515
 
516
	{SVGA3DBLOCKDESC_UV,
517
	 {1, 1, 1},  4, 4, {32, {{0}, {16}, {16}, {0} } },
518
	 {{{0}, {16}, {0}, {0} } } },    /* SVGA3D_R16G16_SINT */
519
 
520
	{SVGA3DBLOCKDESC_RED,
521
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {32}, {0} } },
522
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R32_TYPELESS */
523
 
524
	{SVGA3DBLOCKDESC_DEPTH,
525
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {32}, {0} } },
526
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_D32_FLOAT */
527
 
528
	{SVGA3DBLOCKDESC_RED,
529
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {32}, {0} } },
530
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R32_UINT */
531
 
532
	{SVGA3DBLOCKDESC_RED,
533
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {32}, {0} } },
534
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R32_SINT */
535
 
536
	{SVGA3DBLOCKDESC_RG,
537
	 {1, 1, 1},  4, 4, {32, {{0}, {8}, {24}, {0} } },
538
	 {{{0}, {24}, {0}, {0} } } },    /* SVGA3D_R24G8_TYPELESS */
539
 
540
	{SVGA3DBLOCKDESC_DS,
541
	 {1, 1, 1},  4, 4, {32, {{0}, {8}, {24}, {0} } },
542
	 {{{0}, {24}, {0}, {0} } } },    /* SVGA3D_D24_UNORM_S8_UINT */
543
 
544
	{SVGA3DBLOCKDESC_RED,
545
	 {1, 1, 1},  4, 4, {32, {{0}, {0}, {24}, {0} } },
546
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R24_UNORM_X8_TYPELESS */
547
 
548
	{SVGA3DBLOCKDESC_GREEN,
549
	 {1, 1, 1},  4, 4, {32, {{0}, {8}, {0}, {0} } },
550
	 {{{0}, {24}, {0}, {0} } } },    /* SVGA3D_X24_TYPELESS_G8_UINT */
551
 
552
	{SVGA3DBLOCKDESC_RG,
553
	 {1, 1, 1},  2, 2, {16, {{0}, {8}, {8}, {0} } },
554
	 {{{0}, {8}, {0}, {0} } } },     /* SVGA3D_R8G8_TYPELESS */
555
 
556
	{SVGA3DBLOCKDESC_RG,
557
	 {1, 1, 1},  2, 2, {16, {{0}, {8}, {8}, {0} } },
558
	 {{{0}, {8}, {0}, {0} } } },     /* SVGA3D_R8G8_UNORM */
559
 
560
	{SVGA3DBLOCKDESC_RG,
561
	 {1, 1, 1},  2, 2, {16, {{0}, {8}, {8}, {0} } },
562
	 {{{0}, {8}, {0}, {0} } } },     /* SVGA3D_R8G8_UINT */
563
 
564
	{SVGA3DBLOCKDESC_UV,
565
	 {1, 1, 1},  2, 2, {16, {{0}, {8}, {8}, {0} } },
566
	 {{{0}, {8}, {0}, {0} } } },     /* SVGA3D_R8G8_SINT */
567
 
568
	{SVGA3DBLOCKDESC_RED,
569
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
570
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R16_TYPELESS */
571
 
572
	{SVGA3DBLOCKDESC_RED,
573
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
574
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R16_UNORM */
575
 
576
	{SVGA3DBLOCKDESC_RED,
577
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
578
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R16_UINT */
579
 
580
	{SVGA3DBLOCKDESC_U,
581
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
582
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R16_SNORM */
583
 
584
	{SVGA3DBLOCKDESC_U,
585
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
586
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R16_SINT */
587
 
588
	{SVGA3DBLOCKDESC_RED,
589
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
590
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R8_TYPELESS */
591
 
592
	{SVGA3DBLOCKDESC_RED,
593
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
594
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R8_UNORM */
595
 
596
	{SVGA3DBLOCKDESC_RED,
597
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
598
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R8_UINT */
599
 
600
	{SVGA3DBLOCKDESC_U,
601
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
602
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R8_SNORM */
603
 
604
	{SVGA3DBLOCKDESC_U,
605
	 {1, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
606
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R8_SINT */
607
 
608
	{SVGA3DBLOCKDESC_RED,
609
	 {8, 1, 1},  1, 1, {8, {{0}, {0}, {8}, {0} } },
610
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_R1_UNORM */
611
 
612
	{SVGA3DBLOCKDESC_RGBE,
613
	 {1, 1, 1},  4, 4, {32, {{9}, {9}, {9}, {5} } },
614
	 {{{18}, {9}, {0}, {27} } } },   /* SVGA3D_R9G9B9E5_SHAREDEXP */
615
 
616
	{SVGA3DBLOCKDESC_RG,
617
	 {1, 1, 1},  2, 2, {16, {{0}, {8}, {8}, {0} } },
618
	 {{{0}, {8}, {0}, {0} } } },     /* SVGA3D_R8G8_B8G8_UNORM */
619
 
620
	{SVGA3DBLOCKDESC_RG,
621
	 {1, 1, 1},  2, 2, {16, {{0}, {8}, {8}, {0} } },
622
	 {{{0}, {8}, {0}, {0} } } },     /* SVGA3D_G8R8_G8B8_UNORM */
623
 
624
	{SVGA3DBLOCKDESC_COMPRESSED,
625
	 {4, 4, 1},  8, 8, {64, {{0}, {0}, {64}, {0} } },
626
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC1_TYPELESS */
627
 
628
	{SVGA3DBLOCKDESC_COMPRESSED_SRGB,
629
	 {4, 4, 1},  8, 8, {64, {{0}, {0}, {64}, {0} } },
630
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC1_UNORM_SRGB */
631
 
632
	{SVGA3DBLOCKDESC_COMPRESSED,
633
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
634
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC2_TYPELESS */
635
 
636
	{SVGA3DBLOCKDESC_COMPRESSED_SRGB,
637
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
638
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC2_UNORM_SRGB */
639
 
640
	{SVGA3DBLOCKDESC_COMPRESSED,
641
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
642
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC3_TYPELESS */
643
 
644
	{SVGA3DBLOCKDESC_COMPRESSED_SRGB,
645
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
646
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC3_UNORM_SRGB */
647
 
648
	{SVGA3DBLOCKDESC_COMPRESSED,
649
	 {4, 4, 1},  8, 8, {64, {{0}, {0}, {64}, {0} } },
650
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC4_TYPELESS */
651
 
652
	{SVGA3DBLOCKDESC_COMPRESSED,
653
	 {4, 4, 1},  8, 8, {64, {{0}, {0}, {64}, {0} } },
654
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC4_UNORM */
655
 
656
	{SVGA3DBLOCKDESC_COMPRESSED,
657
	 {4, 4, 1},  8, 8, {64, {{0}, {0}, {64}, {0} } },
658
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC4_SNORM */
659
 
660
	{SVGA3DBLOCKDESC_COMPRESSED,
661
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
662
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC5_TYPELESS */
663
 
664
	{SVGA3DBLOCKDESC_COMPRESSED,
665
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
666
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC5_UNORM */
667
 
668
	{SVGA3DBLOCKDESC_COMPRESSED,
669
	 {4, 4, 1},  16, 16, {128, {{0}, {0}, {128}, {0} } },
670
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_BC5_SNORM */
671
 
672
	{SVGA3DBLOCKDESC_RGBA,
673
	 {1, 1, 1},  4, 4, {32, {{10}, {10}, {10}, {2} } },
674
	 {{{0}, {10}, {20}, {30} } } },  /* SVGA3D_R10G10B10_XR_BIAS_A2_UNORM */
675
 
676
	{SVGA3DBLOCKDESC_RGBA,
677
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
678
	 {{{0}, {8}, {16}, {24} } } },   /* SVGA3D_B8G8R8A8_TYPELESS */
679
 
680
	{SVGA3DBLOCKDESC_RGBA_SRGB,
681
	 {1, 1, 1},  4, 4, {32, {{8}, {8}, {8}, {8} } },
682
	 {{{0}, {8}, {16}, {24} } } },   /* SVGA3D_B8G8R8A8_UNORM_SRGB */
683
 
684
	{SVGA3DBLOCKDESC_RGB,
685
	 {1, 1, 1},  4, 4, {24, {{8}, {8}, {8}, {0} } },
686
	 {{{0}, {8}, {16}, {24} } } },   /* SVGA3D_B8G8R8X8_TYPELESS */
687
 
688
	{SVGA3DBLOCKDESC_RGB_SRGB,
689
	 {1, 1, 1},  4, 4, {24, {{8}, {8}, {8}, {0} } },
690
	 {{{0}, {8}, {16}, {24} } } },   /* SVGA3D_B8G8R8X8_UNORM_SRGB */
691
 
692
	{SVGA3DBLOCKDESC_DEPTH,
693
	 {1, 1, 1},  2, 2, {16, {{0}, {0}, {16}, {0} } },
694
	 {{{0}, {0}, {0}, {0} } } },     /* SVGA3D_Z_DF16 */
695
 
696
	{SVGA3DBLOCKDESC_DS,
697
	 {1, 1, 1},  4, 4, {32, {{0}, {8}, {24}, {0} } },
698
	 {{{0}, {24}, {0}, {0} } } },    /* SVGA3D_Z_DF24 */
699
 
700
	{SVGA3DBLOCKDESC_DS,
701
	 {1, 1, 1},  4, 4, {32, {{0}, {8}, {24}, {0} } },
702
	 {{{0}, {24}, {0}, {0} } } },    /* SVGA3D_Z_D24S8_INT */
703
};
704
 
705
static inline u32 clamped_umul32(u32 a, u32 b)
706
{
707
	uint64_t tmp = (uint64_t) a*b;
708
	return (tmp > (uint64_t) ((u32) -1)) ? (u32) -1 : tmp;
709
}
710
 
711
static inline const struct svga3d_surface_desc *
712
svga3dsurface_get_desc(SVGA3dSurfaceFormat format)
713
{
714
	if (format < ARRAY_SIZE(svga3d_surface_descs))
715
		return &svga3d_surface_descs[format];
716
 
717
	return &svga3d_surface_descs[SVGA3D_FORMAT_INVALID];
718
}
719
 
720
/*
721
 *----------------------------------------------------------------------
722
 *
723
 * svga3dsurface_get_mip_size --
724
 *
725
 *      Given a base level size and the mip level, compute the size of
726
 *      the mip level.
727
 *
728
 * Results:
729
 *      See above.
730
 *
731
 * Side effects:
732
 *      None.
733
 *
734
 *----------------------------------------------------------------------
735
 */
736
 
737
static inline surf_size_struct
738
svga3dsurface_get_mip_size(surf_size_struct base_level, u32 mip_level)
739
{
740
	surf_size_struct size;
741
 
742
	size.width = max_t(u32, base_level.width >> mip_level, 1);
743
	size.height = max_t(u32, base_level.height >> mip_level, 1);
744
	size.depth = max_t(u32, base_level.depth >> mip_level, 1);
745
	return size;
746
}
747
 
748
static inline void
749
svga3dsurface_get_size_in_blocks(const struct svga3d_surface_desc *desc,
750
				 const surf_size_struct *pixel_size,
751
				 surf_size_struct *block_size)
752
{
753
	block_size->width = DIV_ROUND_UP(pixel_size->width,
754
					 desc->block_size.width);
755
	block_size->height = DIV_ROUND_UP(pixel_size->height,
756
					  desc->block_size.height);
757
	block_size->depth = DIV_ROUND_UP(pixel_size->depth,
758
					 desc->block_size.depth);
759
}
760
 
761
static inline bool
762
svga3dsurface_is_planar_surface(const struct svga3d_surface_desc *desc)
763
{
764
	return (desc->block_desc & SVGA3DBLOCKDESC_PLANAR_YUV) != 0;
765
}
766
 
767
static inline u32
768
svga3dsurface_calculate_pitch(const struct svga3d_surface_desc *desc,
769
			      const surf_size_struct *size)
770
{
771
	u32 pitch;
772
	surf_size_struct blocks;
773
 
774
	svga3dsurface_get_size_in_blocks(desc, size, &blocks);
775
 
776
	pitch = blocks.width * desc->pitch_bytes_per_block;
777
 
778
	return pitch;
779
}
780
 
781
/*
782
 *-----------------------------------------------------------------------------
783
 *
784
 * svga3dsurface_get_image_buffer_size --
785
 *
786
 *      Return the number of bytes of buffer space required to store
787
 *      one image of a surface, optionally using the specified pitch.
788
 *
789
 *      If pitch is zero, it is assumed that rows are tightly packed.
790
 *
791
 *      This function is overflow-safe. If the result would have
792
 *      overflowed, instead we return MAX_UINT32.
793
 *
794
 * Results:
795
 *      Byte count.
796
 *
797
 * Side effects:
798
 *      None.
799
 *
800
 *-----------------------------------------------------------------------------
801
 */
802
 
803
static inline u32
804
svga3dsurface_get_image_buffer_size(const struct svga3d_surface_desc *desc,
805
				    const surf_size_struct *size,
806
				    u32 pitch)
807
{
808
	surf_size_struct image_blocks;
809
	u32 slice_size, total_size;
810
 
811
	svga3dsurface_get_size_in_blocks(desc, size, &image_blocks);
812
 
813
	if (svga3dsurface_is_planar_surface(desc)) {
814
		total_size = clamped_umul32(image_blocks.width,
815
					    image_blocks.height);
816
		total_size = clamped_umul32(total_size, image_blocks.depth);
817
		total_size = clamped_umul32(total_size, desc->bytes_per_block);
818
		return total_size;
819
	}
820
 
821
	if (pitch == 0)
822
		pitch = svga3dsurface_calculate_pitch(desc, size);
823
 
824
	slice_size = clamped_umul32(image_blocks.height, pitch);
825
	total_size = clamped_umul32(slice_size, image_blocks.depth);
826
 
827
	return total_size;
828
}
829
 
830
static inline u32
831
svga3dsurface_get_serialized_size(SVGA3dSurfaceFormat format,
832
				  surf_size_struct base_level_size,
833
				  u32 num_mip_levels,
834
				  bool cubemap)
835
{
836
	const struct svga3d_surface_desc *desc = svga3dsurface_get_desc(format);
837
	u32 total_size = 0;
838
	u32 mip;
839
 
840
	for (mip = 0; mip < num_mip_levels; mip++) {
841
		surf_size_struct size =
842
			svga3dsurface_get_mip_size(base_level_size, mip);
843
		total_size += svga3dsurface_get_image_buffer_size(desc,
844
								  &size, 0);
845
	}
846
 
847
	if (cubemap)
848
		total_size *= SVGA3D_MAX_SURFACE_FACES;
849
 
850
	return total_size;
851
}
852
 
853
 
854
/**
855
 * svga3dsurface_get_pixel_offset - Compute the offset (in bytes) to a pixel
856
 * in an image (or volume).
857
 *
858
 * @width: The image width in pixels.
859
 * @height: The image height in pixels
860
 */
861
static inline u32
862
svga3dsurface_get_pixel_offset(SVGA3dSurfaceFormat format,
863
			       u32 width, u32 height,
864
			       u32 x, u32 y, u32 z)
865
{
866
	const struct svga3d_surface_desc *desc = svga3dsurface_get_desc(format);
867
	const u32 bw = desc->block_size.width, bh = desc->block_size.height;
868
	const u32 bd = desc->block_size.depth;
869
	const u32 rowstride = DIV_ROUND_UP(width, bw) * desc->bytes_per_block;
870
	const u32 imgstride = DIV_ROUND_UP(height, bh) * rowstride;
871
	const u32 offset = (z / bd * imgstride +
872
			    y / bh * rowstride +
873
			    x / bw * desc->bytes_per_block);
874
	return offset;
875
}
876
 
877
 
878
static inline u32
879
svga3dsurface_get_image_offset(SVGA3dSurfaceFormat format,
880
			       surf_size_struct baseLevelSize,
881
			       u32 numMipLevels,
882
			       u32 face,
883
			       u32 mip)
884
 
885
{
886
	u32 offset;
887
	u32 mipChainBytes;
888
	u32 mipChainBytesToLevel;
889
	u32 i;
890
	const struct svga3d_surface_desc *desc;
891
	surf_size_struct mipSize;
892
	u32 bytes;
893
 
894
	desc = svga3dsurface_get_desc(format);
895
 
896
	mipChainBytes = 0;
897
	mipChainBytesToLevel = 0;
898
	for (i = 0; i < numMipLevels; i++) {
899
		mipSize = svga3dsurface_get_mip_size(baseLevelSize, i);
900
		bytes = svga3dsurface_get_image_buffer_size(desc, &mipSize, 0);
901
		mipChainBytes += bytes;
902
		if (i < mip)
903
			mipChainBytesToLevel += bytes;
904
	}
905
 
906
	offset = mipChainBytes * face + mipChainBytesToLevel;
907
 
908
	return offset;
909
}