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Accepting request 199483 from X11:XOrg

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Added U_radeon-pad-CS-to-8-DW.patch from upstream -- aligns the IB to 8 DWs. r6xx also require at least 4 DW alignment to avoid a hw bug. (forwarded request 199428 from sumski)

OBS-URL: https://build.opensuse.org/request/show/199483
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/Mesa?expand=0&rev=192
This commit is contained in:
Stephan Kulow 2013-09-23 08:04:37 +00:00 committed by Git OBS Bridge
commit bf40c8b82a
3 changed files with 80 additions and 0 deletions
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9
Mesa.changes
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@ -1,3 +1,12 @@
-------------------------------------------------------------------
Tue Sep 17 17:50:56 UTC 2013 - hrvoje.senjan@gmail.com
- Added U_radeon-winsys-pad-IBs-to-a-multiple-of-8-DWs.patch from
upstream -- aligns the gfx, compute, and dma IBs to 8 DW boundries.
Additionally, r6xx hardware requires at least 4
DW alignment to avoid a hw bug. This also aligns the DMA
IBs to 8 DW which is required for the DMA engine.
-------------------------------------------------------------------
Mon Sep 16 12:44:53 UTC 2013 - sndirsch@suse.com

3
Mesa.spec
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@ -111,6 +111,8 @@ Patch15: u_mesa-8.0-llvmpipe-shmget.patch
# PATCH-FIX-UPSTREAM gallium-egl-gbm-use-wayland-cflags.patch -- use pkgconfig for finding wayland
Patch16: u_gallium-egl-gbm-use-wayland-cflags.patch
Patch18: U_wayland-egl-pc-require-wayland.patch
# PATCH-FIX-UPSTREAM U_radeon-winsys-pad-IBs-to-a-multiple-of-8-DWs.patch -- from http://cgit.freedesktop.org/mesa/mesa/commit/?id=a81beee37e0dd7b75422448420e8e8b0b4b76c1e
Patch19: U_radeon-winsys-pad-IBs-to-a-multiple-of-8-DWs.patch
BuildRoot: %{_tmppath}/%{name}-%{version}-build
@ -534,6 +536,7 @@ rm -rf docs/README.{VMS,WIN32,OS2}
%patch16 -p1
%endif
%patch18 -p1
%patch19 -p1
%build

68
U_radeon-winsys-pad-IBs-to-a-multiple-of-8-DWs.patch Normal file
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@ -0,0 +1,68 @@
From a81beee37e0dd7b75422448420e8e8b0b4b76c1e Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 6 Sep 2013 16:43:34 -0400
Subject: [PATCH 1/1] radeon/winsys: pad IBs to a multiple of 8 DWs
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This aligns the gfx, compute, and dma IBs to 8 DW boundries.
This aligns the the IB to the fetch size of the CP for optimal
performance. Additionally, r6xx hardware requires at least 4
DW alignment to avoid a hw bug. This also aligns the DMA
IBs to 8 DW which is required for the DMA engine. This
alignment is already handled in the gallium driver, but that
patch can be removed now that it's done in the winsys.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
CC: "9.2" <mesa-stable@lists.freedesktop.org>
CC: "9.1" <mesa-stable@lists.freedesktop.org>
---
src/gallium/winsys/radeon/drm/radeon_drm_cs.c | 30 +++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_cs.c b/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
index ea0c99d..38a9209 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
@@ -466,6 +466,36 @@ static void radeon_drm_cs_flush(struct radeon_winsys_cs *rcs, unsigned flags, ui
struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
struct radeon_cs_context *tmp;
+ switch (cs->base.ring_type) {
+ case RING_DMA:
+ /* pad DMA ring to 8 DWs */
+ if (cs->ws->info.chip_class <= SI) {
+ while (rcs->cdw & 7)
+ OUT_CS(&cs->base, 0xf0000000); /* NOP packet */
+ } else {
+ while (rcs->cdw & 7)
+ OUT_CS(&cs->base, 0x00000000); /* NOP packet */
+ }
+ break;
+ case RING_GFX:
+ /* pad DMA ring to 8 DWs to meet CP fetch alignment requirements
+ * r6xx, requires at least 4 dw alignment to avoid a hw bug.
+ */
+ if (flags & RADEON_FLUSH_COMPUTE) {
+ if (cs->ws->info.chip_class <= SI) {
+ while (rcs->cdw & 7)
+ OUT_CS(&cs->base, 0x80000000); /* type2 nop packet */
+ } else {
+ while (rcs->cdw & 7)
+ OUT_CS(&cs->base, 0xffff1000); /* type3 nop packet */
+ }
+ } else {
+ while (rcs->cdw & 7)
+ OUT_CS(&cs->base, 0x80000000); /* type2 nop packet */
+ }
+ break;
+ }
+
if (rcs->cdw > RADEON_MAX_CMDBUF_DWORDS) {
fprintf(stderr, "radeon: command stream overflowed\n");
}
--
1.8.4