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r600g: r6xx deadlock workaround (v6) 

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=50655
https://bugs.freedesktop.org/show_bug.cgi?id=47116

v2: flush along with workaround.
v3: just need a flush
v4: try WAIT_UNTIL
v5: switch to PS partial flush
v6: rework patch

Note: this is a candidate for the 9.1 branch.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-02-22 17:04:43 -05:00
parent 7ebf83f109
commit 8442b67f5f
1 changed files with 6 additions and 0 deletions
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6
src/gallium/drivers/r600/r600_state_common.c
View File

@ -1360,6 +1360,12 @@ static void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info
rctx->vgt_state.atom.dirty = true;
}
/* Workaround for hardware deadlock on certain R600 ASICs: write into a CB register. */
if (rctx->chip_class == R600) {
rctx->flags |= R600_CONTEXT_PS_PARTIAL_FLUSH;
rctx->cb_misc_state.atom.dirty = true;
}
/* Emit states. */
r600_need_cs_space(rctx, ib.user_buffer ? 5 : 0, TRUE);
r600_flush_emit(rctx);