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/*
* Copyright (C) 2019 Collabora, Ltd.
* Copyright (C) 2019 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors (Collabora):
* Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
*
*/
#include "pan_context.h"
#include "util/u_memory.h"
#include "nir_serialize.h"
/* Compute CSOs are tracked like graphics shader CSOs, but are
* considerably simpler. We do not implement multiple
* variants/keying. So the CSO create function just goes ahead and
* compiles the thing. */
static void *
panfrost_create_compute_state(
struct pipe_context *pctx,
const struct pipe_compute_state *cso)
{
struct panfrost_context *ctx = pan_context(pctx);
struct panfrost_shader_variants *so = CALLOC_STRUCT(panfrost_shader_variants);
so->cbase = *cso;
so->is_compute = true;
struct panfrost_shader_state *v = &so->variants[0];
so->variant_count = 1;
so->active_variant = 0;
v->tripipe = malloc(sizeof(struct mali_shader_meta));
if (cso->ir_type == PIPE_SHADER_IR_NIR_SERIALIZED) {
struct blob_reader reader;
const struct pipe_binary_program_header *hdr = cso->prog;
blob_reader_init(&reader, hdr->blob, hdr->num_bytes);
so->cbase.prog = nir_deserialize(NULL, &midgard_nir_options, &reader);
so->cbase.ir_type = PIPE_SHADER_IR_NIR;
}
panfrost_shader_compile(ctx, v->tripipe,
so->cbase.ir_type, so->cbase.prog,
MESA_SHADER_COMPUTE, v, NULL);
return so;
}
static void
panfrost_bind_compute_state(struct pipe_context *pipe, void *cso)
{
struct panfrost_context *ctx = pan_context(pipe);
struct panfrost_shader_variants *variants =
(struct panfrost_shader_variants *) cso;
ctx->shader[PIPE_SHADER_COMPUTE] = variants;
}
static void
panfrost_delete_compute_state(struct pipe_context *pipe, void *cso)
{
free(cso);
}
/* Launch grid is the compute equivalent of draw_vbo, so in this routine, we
* construct the COMPUTE job and some of its payload.
*/
static void
panfrost_launch_grid(struct pipe_context *pipe,
const struct pipe_grid_info *info)
{
struct panfrost_context *ctx = pan_context(pipe);
/* TODO: Do we want a special compute-only batch? */
struct panfrost_batch *batch = panfrost_get_batch_for_fbo(ctx);
ctx->compute_grid = info;
struct mali_job_descriptor_header job = {
.job_type = JOB_TYPE_COMPUTE,
.job_descriptor_size = 1,
.job_barrier = 1
};
/* TODO: Stub */
struct midgard_payload_vertex_tiler *payload = &ctx->payloads[PIPE_SHADER_COMPUTE];
panfrost_emit_for_draw(ctx, false);
/* Compute jobs have a "compute FBD". It's not a real framebuffer
* descriptor - there is no framebuffer - but it takes the place of
* one. As far as I can tell, it's actually the beginning of a
* single-render-target framebuffer descriptor with almost everything
* zeroed out.
*/
struct mali_compute_fbd compute_fbd = {
.unknown1 = {
0, 0x1F, 0, 0, 0, 0, 0, 0
}
};
payload->postfix.framebuffer =
panfrost_upload_transient(batch, &compute_fbd, sizeof(compute_fbd));
/* Invoke according to the grid info */
panfrost_pack_work_groups_compute(&payload->prefix,
info->grid[0], info->grid[1], info->grid[2],
info->block[0], info->block[1], info->block[2], false);
/* Upload the payload */
struct panfrost_transfer transfer = panfrost_allocate_transient(batch, sizeof(job) + sizeof(*payload));
memcpy(transfer.cpu, &job, sizeof(job));
memcpy(transfer.cpu + sizeof(job), payload, sizeof(*payload));
/* Queue the job */
panfrost_scoreboard_queue_compute_job(batch, transfer);
panfrost_flush_all_batches(ctx, true);
}
void
panfrost_compute_context_init(struct pipe_context *pctx)
{
pctx->create_compute_state = panfrost_create_compute_state;
pctx->bind_compute_state = panfrost_bind_compute_state;
pctx->delete_compute_state = panfrost_delete_compute_state;
pctx->launch_grid = panfrost_launch_grid;
}
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