Global constant buffer size is not align to 4 byte, will cause assert in BDW when set bti. Per spec, the low two bits of surface state's width must be 11 if SURFACE_BUFFER's format is RAW. Align the global constant buffer size to 4.
Signed-off-by: Yang Rong <[email protected]> --- src/cl_command_queue_gen7.c | 6 +++++- src/intel/intel_gpgpu.c | 10 +++++++++- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/src/cl_command_queue_gen7.c b/src/cl_command_queue_gen7.c index d847806..225bb34 100644 --- a/src/cl_command_queue_gen7.c +++ b/src/cl_command_queue_gen7.c @@ -109,7 +109,11 @@ cl_upload_constant_buffer(cl_command_queue queue, cl_kernel ker) gbe_program prog = ker->program->opaque; const int32_t arg_n = interp_kernel_get_arg_num(ker->opaque); size_t global_const_size = interp_program_get_global_constant_size(prog); - aligned_size = raw_size = global_const_size; + raw_size = global_const_size; + // Surface state need 4 byte alignment, and Constant argument's buffer size + // have align to 4 byte when alloc, so align global constant size to 4 can + // ensure the finally aligned_size align to 4. + aligned_size = ALIGN(raw_size, 4); /* Reserve 8 bytes to get rid of 0 address */ if(global_const_size == 0) aligned_size = 8; diff --git a/src/intel/intel_gpgpu.c b/src/intel/intel_gpgpu.c index 167d8d9..69c7771 100644 --- a/src/intel/intel_gpgpu.c +++ b/src/intel/intel_gpgpu.c @@ -848,6 +848,9 @@ intel_gpgpu_setup_bti_gen7(intel_gpgpu_t *gpgpu, drm_intel_bo *buf, uint32_t int ss0->ss0.surface_type = I965_SURFACE_BUFFER; ss0->ss0.surface_format = format; ss0->ss2.width = s & 0x7f; /* bits 6:0 of sz */ + // Per bspec, I965_SURFACE_BUFFER and RAW format, size must be a multiple of 4 byte. + if(format == I965_SURFACEFORMAT_RAW) + assert((ss0->ss2.width & 0x03) == 3); ss0->ss2.height = (s >> 7) & 0x3fff; /* bits 20:7 of sz */ ss0->ss3.depth = (s >> 21) & 0x3ff; /* bits 30:21 of sz */ ss0->ss5.cache_control = cl_gpgpu_get_cache_ctrl(); @@ -881,6 +884,9 @@ intel_gpgpu_setup_bti_gen75(intel_gpgpu_t *gpgpu, drm_intel_bo *buf, uint32_t in ss0->ss7.shader_a = I965_SURCHAN_SELECT_ALPHA; } ss0->ss2.width = s & 0x7f; /* bits 6:0 of sz */ + // Per bspec, I965_SURFACE_BUFFER and RAW format, size must be a multiple of 4 byte. + if(format == I965_SURFACEFORMAT_RAW) + assert((ss0->ss2.width & 0x03) == 3); ss0->ss2.height = (s >> 7) & 0x3fff; /* bits 20:7 of sz */ ss0->ss3.depth = (s >> 21) & 0x3ff; /* bits 30:21 of sz */ ss0->ss5.cache_control = cl_gpgpu_get_cache_ctrl(); @@ -914,7 +920,9 @@ intel_gpgpu_setup_bti_gen8(intel_gpgpu_t *gpgpu, drm_intel_bo *buf, uint32_t int ss0->ss7.shader_channel_select_alpha = I965_SURCHAN_SELECT_ALPHA; } ss0->ss2.width = s & 0x7f; /* bits 6:0 of sz */ - assert(ss0->ss2.width & 0x03); + // Per bspec, I965_SURFACE_BUFFER and RAW format, size must be a multiple of 4 byte. + if(format == I965_SURFACEFORMAT_RAW) + assert((ss0->ss2.width & 0x03) == 3); ss0->ss2.height = (s >> 7) & 0x3fff; /* bits 20:7 of sz */ ss0->ss3.depth = (s >> 21) & 0x3ff; /* bits 30:21 of sz */ ss0->ss1.mem_obj_ctrl_state = cl_gpgpu_get_cache_ctrl(); -- 1.9.1 _______________________________________________ Beignet mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/beignet
