src/gallium/drivers/panfrost/pan_compute.c

   1 /*
   2  * Copyright (C) 2019 Collabora, Ltd.
   3  *
   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:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors (Collabora):
  24  *   Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
  25  *
  26  */
  27
  28 #include "pan_context.h"
  29 #include "util/u_memory.h"
  30
  31 static void *
  32 panfrost_create_compute_state(
  33         struct pipe_context *pctx,
  34         const struct pipe_compute_state *cso)
  35 {
  36         return mem_dup(cso, sizeof(*cso));
  37 }
  38
  39 static void
  40 panfrost_bind_compute_state(struct pipe_context *pipe, void *cso)
  41 {
  42         struct pipe_compute_state *state = (struct pipe_compute_state *) cso;
  43
  44         printf("Binding compute %p\n", state);
  45         /* Stub */
  46 }
  47
  48 static void
  49 panfrost_delete_compute_state(struct pipe_context *pipe, void *cso)
  50 {
  51         free(cso);
  52 }
  53
  54 /* Launch grid is the compute equivalent of draw_vbo, so in this routine, we
  55  * construct the COMPUTE job and some of its payload.
  56  */
  57
  58 static void
  59 panfrost_launch_grid(struct pipe_context *pipe,
  60                 const struct pipe_grid_info *info)
  61 {
  62         struct panfrost_context *ctx = pan_context(pipe);
  63
  64         struct mali_job_descriptor_header job = {
  65                 .job_type = JOB_TYPE_COMPUTE,
  66                 .job_descriptor_size = 1,
  67                 .job_barrier = 1
  68         };
  69
  70         /* TODO: Stub */
  71         struct midgard_payload_vertex_tiler *payload = &ctx->payloads[PIPE_SHADER_COMPUTE];
  72
  73         struct panfrost_transfer transfer = panfrost_allocate_transient(ctx, sizeof(job) + sizeof(*payload));
  74         memcpy(transfer.cpu, &job, sizeof(job));
  75         memcpy(transfer.cpu + sizeof(job), payload, sizeof(*payload));
  76
  77         /* TODO: Do we want a special compute-only batch? */
  78         struct panfrost_job *batch = panfrost_get_job_for_fbo(ctx);
  79
  80         /* Queue the job */
  81         panfrost_scoreboard_queue_compute_job(batch, transfer);
  82 }
  83
  84 void
  85 panfrost_compute_context_init(struct pipe_context *pctx)
  86 {
  87         pctx->create_compute_state = panfrost_create_compute_state;
  88         pctx->bind_compute_state = panfrost_bind_compute_state;
  89         pctx->delete_compute_state = panfrost_delete_compute_state;
  90
  91         pctx->launch_grid = panfrost_launch_grid;
  92 }
  93
  94