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etnaviv/ml: Implement ml_operation_supported() callback

Browse source 
Choose what operations are supported so Teflon can forward that
information to TensorFlow Lite.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29698>
This commit is contained in:
Tomeu Vizoso 2025-05-14 09:32:18 +02:00
parent 49bffdd797
commit 41eee4c3cc
3 changed files with 87 additions and 0 deletions
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1
src/gallium/drivers/etnaviv/etnaviv_context.c
View file

@ -700,6 +700,7 @@ etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
pctx->destroy = etna_context_destroy;
pctx->draw_vbo = etna_draw_vbo;
pctx->ml_operation_supported = etna_ml_operation_supported;
pctx->ml_subgraph_create = etna_ml_subgraph_create;
pctx->ml_subgraph_invoke = etna_ml_subgraph_invoke;
pctx->ml_subgraph_read_output = etna_ml_subgraph_read_outputs;

82
src/gallium/drivers/etnaviv/etnaviv_ml.c
View file

@ -557,6 +557,88 @@ count_tensors(const struct pipe_ml_operation *poperations,
return tensor_count + 1;
}
static bool
tensor_quantization_supported(struct pipe_tensor *tensor)
{
/*
* Per-axis quantization not supported, for details see:
* https://ai.google.dev/edge/litert/models/quantization_spec#per-axis_vs_per-tensor
*/
return tensor->scales == NULL && tensor->zero_points == NULL;
}
bool
etna_ml_operation_supported(struct pipe_context *pcontext,
const struct pipe_ml_operation *operation)
{
bool supported = false;
switch (operation->type) {
case PIPE_ML_OPERATION_TYPE_CONVOLUTION: {
struct pipe_tensor *input_tensor = operation->input_tensors[0];
struct pipe_tensor *weight_tensor = operation->conv.weight_tensor;
struct pipe_tensor *bias_tensor = operation->conv.bias_tensor;
struct pipe_tensor *output_tensor = operation->output_tensors[0];
// Dilation and per-axis quantization not yet implemented
if (tensor_quantization_supported(input_tensor) &&
tensor_quantization_supported(weight_tensor) &&
tensor_quantization_supported(bias_tensor) &&
tensor_quantization_supported(output_tensor) &&
operation->conv.dilation_width_factor == 1 &&
operation->conv.dilation_height_factor == 1) {
supported = true;
}
break;
}
case PIPE_ML_OPERATION_TYPE_ADD: {
supported = operation->input_tensors[0]->resource == NULL &&
operation->input_tensors[1]->resource == NULL;
break;
}
case PIPE_ML_OPERATION_TYPE_CONCATENATION: {
supported = true;
if (operation->conc.axis != 3 &&
operation->conc.axis != -1)
supported = false;
break;
}
case PIPE_ML_OPERATION_TYPE_SPLIT: {
supported = true;
if (operation->conc.axis != 3 &&
operation->conc.axis != -1)
supported = false;
unsigned output_channels = operation->output_tensors[0]->dims[3];
for (unsigned i = 1; i < operation->output_count; i++)
if (output_channels != operation->output_tensors[i]->dims[3])
supported = false;
break;
}
case PIPE_ML_OPERATION_TYPE_PAD: {
supported = operation->pad.before_x <= 2 &&
operation->pad.after_x <= 2 &&
operation->pad.before_y <= 2 &&
operation->pad.after_y <= 2 &&
operation->pad.before_z <= 2 &&
operation->pad.after_z <= 2;
break;
}
case PIPE_ML_OPERATION_TYPE_FULLY_CONNECTED: {
supported = operation->input_tensors[0]->dims[3] < 1280;
break;
}
default:
return false;
}
return supported;
}
struct pipe_ml_subgraph *
etna_ml_subgraph_create(struct pipe_context *pcontext,
const struct pipe_ml_operation *poperations,

4
src/gallium/drivers/etnaviv/etnaviv_ml.h
View file

@ -141,6 +141,10 @@ struct pipe_resource *etna_ml_create_resource(struct pipe_context *pctx, size_t
struct etna_core_npu_info *etna_ml_get_core_info(struct etna_context *context);
bool
etna_ml_operation_supported(struct pipe_context *pcontext,
const struct pipe_ml_operation *operation);
struct pipe_ml_subgraph *
etna_ml_subgraph_create(struct pipe_context *context,
const struct pipe_ml_operation *operations,