2
* Copyright © 2014 Broadcom
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:
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
25
* Command list validator for VC4.
27
* The VC4 has no IOMMU between it and system memory. So, a user with
28
* access to execute command lists could escalate privilege by
29
* overwriting system memory (drawing to it as a framebuffer) or
30
* reading system memory it shouldn't (reading it as a texture, or
31
* uniform data, or vertex data).
33
* This validates command lists to ensure that all accesses are within
34
* the bounds of the GEM objects referenced. It explicitly whitelists
35
* packets, and looks at the offsets in any address fields to make
36
* sure they're constrained within the BOs they reference.
38
* Note that because of the validation that's happening anyway, this
39
* is where GEM relocation processing happens.
43
#include "vc4_packet.h"
45
#define VALIDATE_ARGS \
46
struct vc4_exec_info *exec, \
50
/** Return the width in pixels of a 64-byte microtile. */
63
DRM_ERROR("unknown cpp: %d\n", cpp);
68
/** Return the height in pixels of a 64-byte microtile. */
80
DRM_ERROR("unknown cpp: %d\n", cpp);
86
* The texture unit decides what tiling format a particular miplevel is using
87
* this function, so we lay out our miptrees accordingly.
90
size_is_lt(uint32_t width, uint32_t height, int cpp)
92
return (width <= 4 * utile_width(cpp) ||
93
height <= 4 * utile_height(cpp));
96
struct drm_gem_cma_object *
97
vc4_use_bo(struct vc4_exec_info *exec, uint32_t hindex)
99
struct drm_gem_cma_object *obj;
100
struct drm_vc4_bo *bo;
102
if (hindex >= exec->bo_count) {
103
DRM_ERROR("BO index %d greater than BO count %d\n",
104
hindex, exec->bo_count);
107
obj = exec->bo[hindex];
108
bo = to_vc4_bo(&obj->base);
110
if (bo->validated_shader) {
111
DRM_ERROR("Trying to use shader BO as something other than "
119
static struct drm_gem_cma_object *
120
vc4_use_handle(struct vc4_exec_info *exec, uint32_t gem_handles_packet_index)
122
return vc4_use_bo(exec, exec->bo_index[gem_handles_packet_index]);
126
validate_bin_pos(struct vc4_exec_info *exec, void *untrusted, uint32_t pos)
128
/* Note that the untrusted pointer passed to these functions is
129
* incremented past the packet byte.
131
return (untrusted - 1 == exec->bin_u + pos);
135
gl_shader_rec_size(uint32_t pointer_bits)
137
uint32_t attribute_count = pointer_bits & 7;
138
bool extended = pointer_bits & 8;
140
if (attribute_count == 0)
144
return 100 + attribute_count * 4;
146
return 36 + attribute_count * 8;
150
vc4_check_tex_size(struct vc4_exec_info *exec, struct drm_gem_cma_object *fbo,
151
uint32_t offset, uint8_t tiling_format,
152
uint32_t width, uint32_t height, uint8_t cpp)
154
uint32_t aligned_width, aligned_height, stride, size;
155
uint32_t utile_w = utile_width(cpp);
156
uint32_t utile_h = utile_height(cpp);
158
/* The shaded vertex format stores signed 12.4 fixed point
159
* (-2048,2047) offsets from the viewport center, so we should
160
* never have a render target larger than 4096. The texture
161
* unit can only sample from 2048x2048, so it's even more
162
* restricted. This lets us avoid worrying about overflow in
165
if (width > 4096 || height > 4096) {
166
DRM_ERROR("Surface dimesions (%d,%d) too large", width, height);
170
switch (tiling_format) {
171
case VC4_TILING_FORMAT_LINEAR:
172
aligned_width = round_up(width, utile_w);
173
aligned_height = height;
175
case VC4_TILING_FORMAT_T:
176
aligned_width = round_up(width, utile_w * 8);
177
aligned_height = round_up(height, utile_h * 8);
179
case VC4_TILING_FORMAT_LT:
180
aligned_width = round_up(width, utile_w);
181
aligned_height = round_up(height, utile_h);
184
DRM_ERROR("buffer tiling %d unsupported\n", tiling_format);
188
stride = aligned_width * cpp;
189
size = stride * aligned_height;
191
if (size + offset < size ||
192
size + offset > fbo->base.size) {
193
DRM_ERROR("Overflow in %dx%d (%dx%d) fbo size (%d + %d > %zd)\n",
195
aligned_width, aligned_height,
196
size, offset, fbo->base.size);
204
validate_flush(VALIDATE_ARGS)
206
if (!validate_bin_pos(exec, untrusted, exec->args->bin_cl_size - 1)) {
207
DRM_ERROR("Bin CL must end with VC4_PACKET_FLUSH\n");
210
exec->found_flush = true;
216
validate_start_tile_binning(VALIDATE_ARGS)
218
if (exec->found_start_tile_binning_packet) {
219
DRM_ERROR("Duplicate VC4_PACKET_START_TILE_BINNING\n");
222
exec->found_start_tile_binning_packet = true;
224
if (!exec->found_tile_binning_mode_config_packet) {
225
DRM_ERROR("missing VC4_PACKET_TILE_BINNING_MODE_CONFIG\n");
233
validate_increment_semaphore(VALIDATE_ARGS)
235
if (!validate_bin_pos(exec, untrusted, exec->args->bin_cl_size - 2)) {
236
DRM_ERROR("Bin CL must end with "
237
"VC4_PACKET_INCREMENT_SEMAPHORE\n");
240
exec->found_increment_semaphore_packet = true;
246
validate_indexed_prim_list(VALIDATE_ARGS)
248
struct drm_gem_cma_object *ib;
249
uint32_t length = *(uint32_t *)(untrusted + 1);
250
uint32_t offset = *(uint32_t *)(untrusted + 5);
251
uint32_t max_index = *(uint32_t *)(untrusted + 9);
252
uint32_t index_size = (*(uint8_t *)(untrusted + 0) >> 4) ? 2 : 1;
253
struct vc4_shader_state *shader_state;
255
/* Check overflow condition */
256
if (exec->shader_state_count == 0) {
257
DRM_ERROR("shader state must precede primitives\n");
260
shader_state = &exec->shader_state[exec->shader_state_count - 1];
262
if (max_index > shader_state->max_index)
263
shader_state->max_index = max_index;
265
ib = vc4_use_handle(exec, 0);
269
if (offset > ib->base.size ||
270
(ib->base.size - offset) / index_size < length) {
271
DRM_ERROR("IB access overflow (%d + %d*%d > %zd)\n",
272
offset, length, index_size, ib->base.size);
276
*(uint32_t *)(validated + 5) = ib->paddr + offset;
282
validate_gl_array_primitive(VALIDATE_ARGS)
284
uint32_t length = *(uint32_t *)(untrusted + 1);
285
uint32_t base_index = *(uint32_t *)(untrusted + 5);
287
struct vc4_shader_state *shader_state;
289
/* Check overflow condition */
290
if (exec->shader_state_count == 0) {
291
DRM_ERROR("shader state must precede primitives\n");
294
shader_state = &exec->shader_state[exec->shader_state_count - 1];
296
if (length + base_index < length) {
297
DRM_ERROR("primitive vertex count overflow\n");
300
max_index = length + base_index - 1;
302
if (max_index > shader_state->max_index)
303
shader_state->max_index = max_index;
309
validate_gl_shader_state(VALIDATE_ARGS)
311
uint32_t i = exec->shader_state_count++;
313
if (i >= exec->shader_state_size) {
314
DRM_ERROR("More requests for shader states than declared\n");
318
exec->shader_state[i].addr = *(uint32_t *)untrusted;
319
exec->shader_state[i].max_index = 0;
321
if (exec->shader_state[i].addr & ~0xf) {
322
DRM_ERROR("high bits set in GL shader rec reference\n");
326
*(uint32_t *)validated = (exec->shader_rec_p +
327
exec->shader_state[i].addr);
329
exec->shader_rec_p +=
330
roundup(gl_shader_rec_size(exec->shader_state[i].addr), 16);
336
validate_tile_binning_config(VALIDATE_ARGS)
338
struct drm_device *dev = exec->exec_bo->base.dev;
340
uint32_t tile_state_size, tile_alloc_size;
343
if (exec->found_tile_binning_mode_config_packet) {
344
DRM_ERROR("Duplicate VC4_PACKET_TILE_BINNING_MODE_CONFIG\n");
347
exec->found_tile_binning_mode_config_packet = true;
349
exec->bin_tiles_x = *(uint8_t *)(untrusted + 12);
350
exec->bin_tiles_y = *(uint8_t *)(untrusted + 13);
351
tile_count = exec->bin_tiles_x * exec->bin_tiles_y;
352
flags = *(uint8_t *)(untrusted + 14);
354
if (exec->bin_tiles_x == 0 ||
355
exec->bin_tiles_y == 0) {
356
DRM_ERROR("Tile binning config of %dx%d too small\n",
357
exec->bin_tiles_x, exec->bin_tiles_y);
361
if (flags & (VC4_BIN_CONFIG_DB_NON_MS |
362
VC4_BIN_CONFIG_TILE_BUFFER_64BIT)) {
363
DRM_ERROR("unsupported binning config flags 0x%02x\n", flags);
367
/* The tile state data array is 48 bytes per tile, and we put it at
368
* the start of a BO containing both it and the tile alloc.
370
tile_state_size = 48 * tile_count;
372
/* Since the tile alloc array will follow us, align. */
373
exec->tile_alloc_offset = roundup(tile_state_size, 4096);
375
*(uint8_t *)(validated + 14) =
376
((flags & ~(VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE_MASK |
377
VC4_BIN_CONFIG_ALLOC_BLOCK_SIZE_MASK)) |
378
VC4_BIN_CONFIG_AUTO_INIT_TSDA |
379
VC4_SET_FIELD(VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE_32,
380
VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE) |
381
VC4_SET_FIELD(VC4_BIN_CONFIG_ALLOC_BLOCK_SIZE_128,
382
VC4_BIN_CONFIG_ALLOC_BLOCK_SIZE));
384
/* Initial block size. */
385
tile_alloc_size = 32 * tile_count;
388
* The initial allocation gets rounded to the next 256 bytes before
389
* the hardware starts fulfilling further allocations.
391
tile_alloc_size = roundup(tile_alloc_size, 256);
393
/* Add space for the extra allocations. This is what gets used first,
394
* before overflow memory. It must have at least 4096 bytes, but we
395
* want to avoid overflow memory usage if possible.
397
tile_alloc_size += 1024 * 1024;
399
exec->tile_bo = drm_gem_cma_create(dev, exec->tile_alloc_offset +
403
list_addtail(&to_vc4_bo(&exec->tile_bo->base)->unref_head,
406
/* tile alloc address. */
407
*(uint32_t *)(validated + 0) = (exec->tile_bo->paddr +
408
exec->tile_alloc_offset);
409
/* tile alloc size. */
410
*(uint32_t *)(validated + 4) = tile_alloc_size;
411
/* tile state address. */
412
*(uint32_t *)(validated + 8) = exec->tile_bo->paddr;
418
validate_gem_handles(VALIDATE_ARGS)
420
memcpy(exec->bo_index, untrusted, sizeof(exec->bo_index));
424
#define VC4_DEFINE_PACKET(packet, func) \
425
[packet] = { packet ## _SIZE, #packet, func }
427
static const struct cmd_info {
430
int (*func)(struct vc4_exec_info *exec, void *validated,
433
VC4_DEFINE_PACKET(VC4_PACKET_HALT, NULL),
434
VC4_DEFINE_PACKET(VC4_PACKET_NOP, NULL),
435
VC4_DEFINE_PACKET(VC4_PACKET_FLUSH, validate_flush),
436
VC4_DEFINE_PACKET(VC4_PACKET_FLUSH_ALL, NULL),
437
VC4_DEFINE_PACKET(VC4_PACKET_START_TILE_BINNING,
438
validate_start_tile_binning),
439
VC4_DEFINE_PACKET(VC4_PACKET_INCREMENT_SEMAPHORE,
440
validate_increment_semaphore),
442
VC4_DEFINE_PACKET(VC4_PACKET_GL_INDEXED_PRIMITIVE,
443
validate_indexed_prim_list),
444
VC4_DEFINE_PACKET(VC4_PACKET_GL_ARRAY_PRIMITIVE,
445
validate_gl_array_primitive),
447
VC4_DEFINE_PACKET(VC4_PACKET_PRIMITIVE_LIST_FORMAT, NULL),
449
VC4_DEFINE_PACKET(VC4_PACKET_GL_SHADER_STATE, validate_gl_shader_state),
451
VC4_DEFINE_PACKET(VC4_PACKET_CONFIGURATION_BITS, NULL),
452
VC4_DEFINE_PACKET(VC4_PACKET_FLAT_SHADE_FLAGS, NULL),
453
VC4_DEFINE_PACKET(VC4_PACKET_POINT_SIZE, NULL),
454
VC4_DEFINE_PACKET(VC4_PACKET_LINE_WIDTH, NULL),
455
VC4_DEFINE_PACKET(VC4_PACKET_RHT_X_BOUNDARY, NULL),
456
VC4_DEFINE_PACKET(VC4_PACKET_DEPTH_OFFSET, NULL),
457
VC4_DEFINE_PACKET(VC4_PACKET_CLIP_WINDOW, NULL),
458
VC4_DEFINE_PACKET(VC4_PACKET_VIEWPORT_OFFSET, NULL),
459
VC4_DEFINE_PACKET(VC4_PACKET_CLIPPER_XY_SCALING, NULL),
460
/* Note: The docs say this was also 105, but it was 106 in the
461
* initial userland code drop.
463
VC4_DEFINE_PACKET(VC4_PACKET_CLIPPER_Z_SCALING, NULL),
465
VC4_DEFINE_PACKET(VC4_PACKET_TILE_BINNING_MODE_CONFIG,
466
validate_tile_binning_config),
468
VC4_DEFINE_PACKET(VC4_PACKET_GEM_HANDLES, validate_gem_handles),
472
vc4_validate_bin_cl(struct drm_device *dev,
475
struct vc4_exec_info *exec)
477
uint32_t len = exec->args->bin_cl_size;
478
uint32_t dst_offset = 0;
479
uint32_t src_offset = 0;
481
while (src_offset < len) {
482
void *dst_pkt = validated + dst_offset;
483
void *src_pkt = unvalidated + src_offset;
484
u8 cmd = *(uint8_t *)src_pkt;
485
const struct cmd_info *info;
487
if (cmd >= ARRAY_SIZE(cmd_info)) {
488
DRM_ERROR("0x%08x: packet %d out of bounds\n",
493
info = &cmd_info[cmd];
495
DRM_ERROR("0x%08x: packet %d invalid\n",
500
if (src_offset + info->len > len) {
501
DRM_ERROR("0x%08x: packet %d (%s) length 0x%08x "
502
"exceeds bounds (0x%08x)\n",
503
src_offset, cmd, info->name, info->len,
508
if (cmd != VC4_PACKET_GEM_HANDLES)
509
memcpy(dst_pkt, src_pkt, info->len);
511
if (info->func && info->func(exec,
514
DRM_ERROR("0x%08x: packet %d (%s) failed to validate\n",
515
src_offset, cmd, info->name);
519
src_offset += info->len;
520
/* GEM handle loading doesn't produce HW packets. */
521
if (cmd != VC4_PACKET_GEM_HANDLES)
522
dst_offset += info->len;
524
/* When the CL hits halt, it'll stop reading anything else. */
525
if (cmd == VC4_PACKET_HALT)
529
exec->ct0ea = exec->ct0ca + dst_offset;
531
if (!exec->found_start_tile_binning_packet) {
532
DRM_ERROR("Bin CL missing VC4_PACKET_START_TILE_BINNING\n");
536
/* The bin CL must be ended with INCREMENT_SEMAPHORE and FLUSH. The
537
* semaphore is used to trigger the render CL to start up, and the
538
* FLUSH is what caps the bin lists with
539
* VC4_PACKET_RETURN_FROM_SUB_LIST (so they jump back to the main
540
* render CL when they get called to) and actually triggers the queued
541
* semaphore increment.
543
if (!exec->found_increment_semaphore_packet || !exec->found_flush) {
544
DRM_ERROR("Bin CL missing VC4_PACKET_INCREMENT_SEMAPHORE + "
545
"VC4_PACKET_FLUSH\n");
553
reloc_tex(struct vc4_exec_info *exec,
554
void *uniform_data_u,
555
struct vc4_texture_sample_info *sample,
556
uint32_t texture_handle_index)
559
struct drm_gem_cma_object *tex;
560
uint32_t p0 = *(uint32_t *)(uniform_data_u + sample->p_offset[0]);
561
uint32_t p1 = *(uint32_t *)(uniform_data_u + sample->p_offset[1]);
562
uint32_t p2 = (sample->p_offset[2] != ~0 ?
563
*(uint32_t *)(uniform_data_u + sample->p_offset[2]) : 0);
564
uint32_t p3 = (sample->p_offset[3] != ~0 ?
565
*(uint32_t *)(uniform_data_u + sample->p_offset[3]) : 0);
566
uint32_t *validated_p0 = exec->uniforms_v + sample->p_offset[0];
567
uint32_t offset = p0 & VC4_TEX_P0_OFFSET_MASK;
568
uint32_t miplevels = VC4_GET_FIELD(p0, VC4_TEX_P0_MIPLVLS);
569
uint32_t width = VC4_GET_FIELD(p1, VC4_TEX_P1_WIDTH);
570
uint32_t height = VC4_GET_FIELD(p1, VC4_TEX_P1_HEIGHT);
571
uint32_t cpp, tiling_format, utile_w, utile_h;
573
uint32_t cube_map_stride = 0;
574
enum vc4_texture_data_type type;
576
tex = vc4_use_bo(exec, texture_handle_index);
580
if (sample->is_direct) {
581
uint32_t remaining_size = tex->base.size - p0;
583
if (p0 > tex->base.size - 4) {
584
DRM_ERROR("UBO offset greater than UBO size\n");
587
if (p1 > remaining_size - 4) {
588
DRM_ERROR("UBO clamp would allow reads "
592
*validated_p0 = tex->paddr + p0;
601
if (p0 & VC4_TEX_P0_CMMODE_MASK) {
602
if (VC4_GET_FIELD(p2, VC4_TEX_P2_PTYPE) ==
603
VC4_TEX_P2_PTYPE_CUBE_MAP_STRIDE)
604
cube_map_stride = p2 & VC4_TEX_P2_CMST_MASK;
605
if (VC4_GET_FIELD(p3, VC4_TEX_P2_PTYPE) ==
606
VC4_TEX_P2_PTYPE_CUBE_MAP_STRIDE) {
607
if (cube_map_stride) {
608
DRM_ERROR("Cube map stride set twice\n");
612
cube_map_stride = p3 & VC4_TEX_P2_CMST_MASK;
614
if (!cube_map_stride) {
615
DRM_ERROR("Cube map stride not set\n");
620
type = (VC4_GET_FIELD(p0, VC4_TEX_P0_TYPE) |
621
(VC4_GET_FIELD(p1, VC4_TEX_P1_TYPE4) << 4));
624
case VC4_TEXTURE_TYPE_RGBA8888:
625
case VC4_TEXTURE_TYPE_RGBX8888:
626
case VC4_TEXTURE_TYPE_RGBA32R:
629
case VC4_TEXTURE_TYPE_RGBA4444:
630
case VC4_TEXTURE_TYPE_RGBA5551:
631
case VC4_TEXTURE_TYPE_RGB565:
632
case VC4_TEXTURE_TYPE_LUMALPHA:
633
case VC4_TEXTURE_TYPE_S16F:
634
case VC4_TEXTURE_TYPE_S16:
637
case VC4_TEXTURE_TYPE_LUMINANCE:
638
case VC4_TEXTURE_TYPE_ALPHA:
639
case VC4_TEXTURE_TYPE_S8:
642
case VC4_TEXTURE_TYPE_ETC1:
643
/* ETC1 is arranged as 64-bit blocks, where each block is 4x4
647
width = (width + 3) >> 2;
648
height = (height + 3) >> 2;
650
case VC4_TEXTURE_TYPE_BW1:
651
case VC4_TEXTURE_TYPE_A4:
652
case VC4_TEXTURE_TYPE_A1:
653
case VC4_TEXTURE_TYPE_RGBA64:
654
case VC4_TEXTURE_TYPE_YUV422R:
656
DRM_ERROR("Texture format %d unsupported\n", type);
659
utile_w = utile_width(cpp);
660
utile_h = utile_height(cpp);
662
if (type == VC4_TEXTURE_TYPE_RGBA32R) {
663
tiling_format = VC4_TILING_FORMAT_LINEAR;
665
if (size_is_lt(width, height, cpp))
666
tiling_format = VC4_TILING_FORMAT_LT;
668
tiling_format = VC4_TILING_FORMAT_T;
671
if (!vc4_check_tex_size(exec, tex, offset + cube_map_stride * 5,
672
tiling_format, width, height, cpp)) {
676
/* The mipmap levels are stored before the base of the texture. Make
677
* sure there is actually space in the BO.
679
for (i = 1; i <= miplevels; i++) {
680
uint32_t level_width = max(width >> i, 1u);
681
uint32_t level_height = max(height >> i, 1u);
682
uint32_t aligned_width, aligned_height;
685
/* Once the levels get small enough, they drop from T to LT. */
686
if (tiling_format == VC4_TILING_FORMAT_T &&
687
size_is_lt(level_width, level_height, cpp)) {
688
tiling_format = VC4_TILING_FORMAT_LT;
691
switch (tiling_format) {
692
case VC4_TILING_FORMAT_T:
693
aligned_width = round_up(level_width, utile_w * 8);
694
aligned_height = round_up(level_height, utile_h * 8);
696
case VC4_TILING_FORMAT_LT:
697
aligned_width = round_up(level_width, utile_w);
698
aligned_height = round_up(level_height, utile_h);
701
aligned_width = round_up(level_width, utile_w);
702
aligned_height = level_height;
706
level_size = aligned_width * cpp * aligned_height;
708
if (offset < level_size) {
709
DRM_ERROR("Level %d (%dx%d -> %dx%d) size %db "
710
"overflowed buffer bounds (offset %d)\n",
711
i, level_width, level_height,
712
aligned_width, aligned_height,
717
offset -= level_size;
720
*validated_p0 = tex->paddr + p0;
724
DRM_INFO("Texture p0 at %d: 0x%08x\n", sample->p_offset[0], p0);
725
DRM_INFO("Texture p1 at %d: 0x%08x\n", sample->p_offset[1], p1);
726
DRM_INFO("Texture p2 at %d: 0x%08x\n", sample->p_offset[2], p2);
727
DRM_INFO("Texture p3 at %d: 0x%08x\n", sample->p_offset[3], p3);
732
validate_gl_shader_rec(struct drm_device *dev,
733
struct vc4_exec_info *exec,
734
struct vc4_shader_state *state)
736
uint32_t *src_handles;
738
static const uint32_t shader_reloc_offsets[] = {
743
uint32_t shader_reloc_count = ARRAY_SIZE(shader_reloc_offsets);
744
struct drm_gem_cma_object *bo[shader_reloc_count + 8];
745
uint32_t nr_attributes, nr_relocs, packet_size;
748
nr_attributes = state->addr & 0x7;
749
if (nr_attributes == 0)
751
packet_size = gl_shader_rec_size(state->addr);
753
nr_relocs = ARRAY_SIZE(shader_reloc_offsets) + nr_attributes;
754
if (nr_relocs * 4 > exec->shader_rec_size) {
755
DRM_ERROR("overflowed shader recs reading %d handles "
756
"from %d bytes left\n",
757
nr_relocs, exec->shader_rec_size);
760
src_handles = exec->shader_rec_u;
761
exec->shader_rec_u += nr_relocs * 4;
762
exec->shader_rec_size -= nr_relocs * 4;
764
if (packet_size > exec->shader_rec_size) {
765
DRM_ERROR("overflowed shader recs copying %db packet "
766
"from %d bytes left\n",
767
packet_size, exec->shader_rec_size);
770
pkt_u = exec->shader_rec_u;
771
pkt_v = exec->shader_rec_v;
772
memcpy(pkt_v, pkt_u, packet_size);
773
exec->shader_rec_u += packet_size;
774
/* Shader recs have to be aligned to 16 bytes (due to the attribute
775
* flags being in the low bytes), so round the next validated shader
776
* rec address up. This should be safe, since we've got so many
777
* relocations in a shader rec packet.
779
BUG_ON(roundup(packet_size, 16) - packet_size > nr_relocs * 4);
780
exec->shader_rec_v += roundup(packet_size, 16);
781
exec->shader_rec_size -= packet_size;
783
for (i = 0; i < shader_reloc_count; i++) {
784
if (src_handles[i] > exec->bo_count) {
785
DRM_ERROR("Shader handle %d too big\n", src_handles[i]);
789
bo[i] = exec->bo[src_handles[i]];
793
for (i = shader_reloc_count; i < nr_relocs; i++) {
794
bo[i] = vc4_use_bo(exec, src_handles[i]);
799
if (((*(uint16_t *)pkt_u & VC4_SHADER_FLAG_FS_SINGLE_THREAD) == 0) !=
800
to_vc4_bo(&bo[0]->base)->validated_shader->is_threaded) {
801
DRM_ERROR("Thread mode of CL and FS do not match\n");
805
if (to_vc4_bo(&bo[1]->base)->validated_shader->is_threaded ||
806
to_vc4_bo(&bo[2]->base)->validated_shader->is_threaded) {
807
DRM_ERROR("cs and vs cannot be threaded\n");
811
for (i = 0; i < shader_reloc_count; i++) {
812
struct vc4_validated_shader_info *validated_shader;
813
uint32_t o = shader_reloc_offsets[i];
814
uint32_t src_offset = *(uint32_t *)(pkt_u + o);
815
uint32_t *texture_handles_u;
816
void *uniform_data_u;
819
*(uint32_t *)(pkt_v + o) = bo[i]->paddr + src_offset;
821
if (src_offset != 0) {
822
DRM_ERROR("Shaders must be at offset 0 of "
827
validated_shader = to_vc4_bo(&bo[i]->base)->validated_shader;
828
if (!validated_shader)
831
if (validated_shader->uniforms_src_size >
832
exec->uniforms_size) {
833
DRM_ERROR("Uniforms src buffer overflow\n");
837
texture_handles_u = exec->uniforms_u;
838
uniform_data_u = (texture_handles_u +
839
validated_shader->num_texture_samples);
841
memcpy(exec->uniforms_v, uniform_data_u,
842
validated_shader->uniforms_size);
845
tex < validated_shader->num_texture_samples;
849
&validated_shader->texture_samples[tex],
850
texture_handles_u[tex])) {
855
/* Fill in the uniform slots that need this shader's
856
* start-of-uniforms address (used for resetting the uniform
857
* stream in the presence of control flow).
860
uni < validated_shader->num_uniform_addr_offsets;
862
uint32_t o = validated_shader->uniform_addr_offsets[uni];
863
((uint32_t *)exec->uniforms_v)[o] = exec->uniforms_p;
866
*(uint32_t *)(pkt_v + o + 4) = exec->uniforms_p;
868
exec->uniforms_u += validated_shader->uniforms_src_size;
869
exec->uniforms_v += validated_shader->uniforms_size;
870
exec->uniforms_p += validated_shader->uniforms_size;
873
for (i = 0; i < nr_attributes; i++) {
874
struct drm_gem_cma_object *vbo =
875
bo[ARRAY_SIZE(shader_reloc_offsets) + i];
876
uint32_t o = 36 + i * 8;
877
uint32_t offset = *(uint32_t *)(pkt_u + o + 0);
878
uint32_t attr_size = *(uint8_t *)(pkt_u + o + 4) + 1;
879
uint32_t stride = *(uint8_t *)(pkt_u + o + 5);
882
if (state->addr & 0x8)
883
stride |= (*(uint32_t *)(pkt_u + 100 + i * 4)) & ~0xff;
885
if (vbo->base.size < offset ||
886
vbo->base.size - offset < attr_size) {
887
DRM_ERROR("BO offset overflow (%d + %d > %zd)\n",
888
offset, attr_size, vbo->base.size);
893
max_index = ((vbo->base.size - offset - attr_size) /
895
if (state->max_index > max_index) {
896
DRM_ERROR("primitives use index %d out of "
898
state->max_index, max_index);
903
*(uint32_t *)(pkt_v + o) = vbo->paddr + offset;
910
vc4_validate_shader_recs(struct drm_device *dev,
911
struct vc4_exec_info *exec)
916
for (i = 0; i < exec->shader_state_count; i++) {
917
ret = validate_gl_shader_rec(dev, exec, &exec->shader_state[i]);