From f536097f67521180dafd270b28ac9a852af9c141 Mon Sep 17 00:00:00 2001 From: Lionel Landwerlin Date: Tue, 1 May 2018 12:32:45 +0100 Subject: [PATCH] i965: require pixel scoreboard stall prior to ISP disable Invalidating the indirect state pointers might affect a previously scheduled & still running 3DPRIMITIVE (causing page fault). So stall on pixel scoreboard before that. v2: Fix compile issue :( v3: Stall on pixel scoreboard v4: Drop the post sync operation (Lionel) Signed-off-by: Lionel Landwerlin Reviewed-by: Rafael Antognolli Fixes: ca19ee33d7d39 ("i965/gen10: Ignore push constant packets during context restore.") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106243 --- src/mesa/drivers/dri/i965/brw_pipe_control.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/brw_pipe_control.c b/src/mesa/drivers/dri/i965/brw_pipe_control.c index 02278be..879bfb6 100644 --- a/src/mesa/drivers/dri/i965/brw_pipe_control.c +++ b/src/mesa/drivers/dri/i965/brw_pipe_control.c @@ -349,14 +349,21 @@ gen7_emit_vs_workaround_flush(struct brw_context *brw) * context restore, so the mentioned hang doesn't happen. However, * software must program push constant commands for all stages prior to * rendering anything, so we flag them as dirty. + * + * Finally, we also make sure to stall at pixel scoreboard to make sure the + * constants have been loaded into the EUs prior to disable the push constants + * so that it doesn't hang a previous 3DPRIMITIVE. */ void gen10_emit_isp_disable(struct brw_context *brw) { brw_emit_pipe_control(brw, - PIPE_CONTROL_ISP_DIS | + PIPE_CONTROL_STALL_AT_SCOREBOARD | PIPE_CONTROL_CS_STALL, NULL, 0, 0); + brw_emit_pipe_control(brw, + PIPE_CONTROL_ISP_DIS, + NULL, 0, 0); brw->vs.base.push_constants_dirty = true; brw->tcs.base.push_constants_dirty = true; -- 2.7.4