From ae4536b4f71cbe76230ea7edc7eb4d6041e651b4 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michel=20D=C3=A4nzer?= Date: Tue, 11 Nov 2014 16:10:20 +0900 Subject: [PATCH] radeonsi: Disable asynchronous DMA except for PIPE_BUFFER MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Using the asynchronous DMA engine for multi-dimensional operations seems to cause random GPU lockups for various people. While the root cause for this might need to be fixed in the kernel, let's disable it for now. Before re-enabling this, please make sure you can hit all newly enabled paths in your testing, preferably with both piglit and real world apps, and get in touch with people on the bug reports below for stability testing. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85647 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83500 Cc: "10.3 10.4" Reviewed-by: Marek Olšák Reviewed-by: Grigori Goronzy --- src/gallium/drivers/radeonsi/si_dma.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/src/gallium/drivers/radeonsi/si_dma.c b/src/gallium/drivers/radeonsi/si_dma.c index b1bd5e7..db523ee 100644 --- a/src/gallium/drivers/radeonsi/si_dma.c +++ b/src/gallium/drivers/radeonsi/si_dma.c @@ -250,6 +250,21 @@ void si_dma_copy(struct pipe_context *ctx, return; } + /* XXX: Using the asynchronous DMA engine for multi-dimensional + * operations seems to cause random GPU lockups for various people. + * While the root cause for this might need to be fixed in the kernel, + * let's disable it for now. + * + * Before re-enabling this, please make sure you can hit all newly + * enabled paths in your testing, preferably with both piglit and real + * world apps, and get in touch with people on the bug reports below + * for stability testing. + * + * https://bugs.freedesktop.org/show_bug.cgi?id=85647 + * https://bugs.freedesktop.org/show_bug.cgi?id=83500 + */ + goto fallback; + if (src->format != dst->format || src_box->depth > 1 || rdst->dirty_level_mask != 0 || rdst->cmask.size || rdst->fmask.size || -- 2.7.4