On Fri, Jul 25, 2014 at 9:30 PM, Marek Olšák <mar...@gmail.com> wrote:
> From: Marek Olšák <marek.ol...@amd.com>
>
> I actually couldn't reproduce this one, but internal docs recommend this
> workaround. Better safe than sorry.
>
> Also, the number of dwords for the sync packets is increased by 4 instead
> of 2, because it wasn't bumped last time when a new packet was added there.
>
> Cc: mesa-sta...@lists.freedesktop.org
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>
> ---
> src/gallium/drivers/radeon/r600_pipe_common.h | 1 +
> src/gallium/drivers/radeonsi/si_state_draw.c | 14 +++++++++++++-
> 2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/src/gallium/drivers/radeon/r600_pipe_common.h
> b/src/gallium/drivers/radeon/r600_pipe_common.h
> index 5348b8d..dcec2bb 100644
> --- a/src/gallium/drivers/radeon/r600_pipe_common.h
> +++ b/src/gallium/drivers/radeon/r600_pipe_common.h
> @@ -72,6 +72,7 @@
> #define R600_CONTEXT_WAIT_3D_IDLE (1 << 17)
> #define R600_CONTEXT_WAIT_CP_DMA_IDLE (1 << 18)
> #define R600_CONTEXT_VGT_FLUSH (1 << 19)
> +#define R600_CONTEXT_VGT_STREAMOUT_SYNC (1 << 20)
>
> /* Debug flags. */
> /* logging */
> diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c
> b/src/gallium/drivers/radeonsi/si_state_draw.c
> index 1816540..eb21ba1 100644
> --- a/src/gallium/drivers/radeonsi/si_state_draw.c
> +++ b/src/gallium/drivers/radeonsi/si_state_draw.c
> @@ -868,11 +868,15 @@ void si_emit_cache_flush(struct r600_common_context
> *sctx, struct r600_atom *ato
> radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
> radeon_emit(cs, EVENT_TYPE(V_028A90_VGT_FLUSH) |
> EVENT_INDEX(0));
> }
> + if (sctx->flags & R600_CONTEXT_VGT_STREAMOUT_SYNC) {
> + radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
> + radeon_emit(cs, EVENT_TYPE(V_028A90_VGT_STREAMOUT_SYNC) |
> EVENT_INDEX(0));
> + }
>
> sctx->flags = 0;
> }
>
> -const struct r600_atom si_atom_cache_flush = { si_emit_cache_flush, 13 }; /*
> number of CS dwords */
> +const struct r600_atom si_atom_cache_flush = { si_emit_cache_flush, 17 }; /*
> number of CS dwords */
>
> static void si_get_draw_start_count(struct si_context *sctx,
> const struct pipe_draw_info *info,
> @@ -985,6 +989,14 @@ void si_draw_vbo(struct pipe_context *ctx, const struct
> pipe_draw_info *info)
> }
> #endif
>
> + /* Workaround for a VGT hang when streamout is enabled.
> + * It must be done after drawing. */
> + if (sctx->b.family == CHIP_HAWAII &&
> + (sctx->b.streamout.streamout_enabled ||
> + sctx->b.streamout.prims_gen_query_enabled)) {
> + sctx->b.flags |= R600_CONTEXT_VGT_STREAMOUT_SYNC;
> + }
> +
> /* Set the depth buffer as dirty. */
> if (sctx->framebuffer.state.zsbuf) {
> struct pipe_surface *surf = sctx->framebuffer.state.zsbuf;
> --
> 1.9.1
>
> _______________________________________________
> mesa-dev mailing list
> mesa-dev@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
