That's not much "indirect" the way it's done, but looks alright to me ;-).
Reviewed-by: Roland Scheidegger <srol...@vmware.com>
Am 30.01.2018 um 03:22 schrieb Dave Airlie:
> From: Dave Airlie <airl...@redhat.com>
>
> I think the cp packets can be made work, but I think it might
> need a kernel change, so for now just do the worst thing.
> ---
> src/gallium/drivers/r600/evergreen_compute.c | 26 +++++++++++++++++++-------
> 1 file changed, 19 insertions(+), 7 deletions(-)
>
> diff --git a/src/gallium/drivers/r600/evergreen_compute.c
> b/src/gallium/drivers/r600/evergreen_compute.c
> index 7880d0f..b2c724f 100644
> --- a/src/gallium/drivers/r600/evergreen_compute.c
> +++ b/src/gallium/drivers/r600/evergreen_compute.c
> @@ -630,13 +630,25 @@ static void evergreen_emit_dispatch(struct r600_context
> *rctx,
> radeon_compute_set_context_reg(cs, R_0288E8_SQ_LDS_ALLOC,
> lds_size | (num_waves << 14));
>
> - /* Dispatch packet */
> - radeon_emit(cs, PKT3C(PKT3_DISPATCH_DIRECT, 3, 0));
> - radeon_emit(cs, info->grid[0]);
> - radeon_emit(cs, info->grid[1]);
> - radeon_emit(cs, info->grid[2]);
> - /* VGT_DISPATCH_INITIATOR = COMPUTE_SHADER_EN */
> - radeon_emit(cs, 1);
> + if (info->indirect) {
> + struct r600_resource *indirect_resource = (struct r600_resource
> *)info->indirect;
> + unsigned *data = r600_buffer_map_sync_with_rings(&rctx->b,
> indirect_resource, PIPE_TRANSFER_READ);
> + if (data) {
> + radeon_emit(cs, PKT3C(PKT3_DISPATCH_DIRECT, 3, 0));
> + radeon_emit(cs, data[0]);
> + radeon_emit(cs, data[1]);
> + radeon_emit(cs, data[2]);
> + radeon_emit(cs, 1);
> + }
> + } else {
> + /* Dispatch packet */
> + radeon_emit(cs, PKT3C(PKT3_DISPATCH_DIRECT, 3, 0));
> + radeon_emit(cs, info->grid[0]);
> + radeon_emit(cs, info->grid[1]);
> + radeon_emit(cs, info->grid[2]);
> + /* VGT_DISPATCH_INITIATOR = COMPUTE_SHADER_EN */
> + radeon_emit(cs, 1);
> + }
>
> if (rctx->is_debug)
> eg_trace_emit(rctx);
>
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