diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2010-09-04 05:04:34 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-10-06 11:38:08 +1000 |
| commit | d0f8a854c340986359a3b0a97e380c71def7a440 (patch) | |
| tree | 4f4065bb8c920badc92f56c25b5b105066ae6fc2 /drivers/gpu/drm/radeon/radeon_device.c | |
| parent | 724c80e1d630296d1324859e964d80d35007d83c (diff) | |
| download | kernel_samsung_smdk4412-d0f8a854c340986359a3b0a97e380c71def7a440.zip kernel_samsung_smdk4412-d0f8a854c340986359a3b0a97e380c71def7a440.tar.gz kernel_samsung_smdk4412-d0f8a854c340986359a3b0a97e380c71def7a440.tar.bz2 | |
drm/radeon/kms/r6xx+: use new style fencing (v3)
On r6xx+ a newer fence mechanism was implemented to replace
the old wait_until plus scratch regs setup. A single EOP event
will flush the destination caches, write a fence value, and generate
an interrupt. This is the recommended fence mechanism on r6xx+ asics.
This requires my previous writeback patch.
v2: fix typo that enabled event fence checking on all asics
rather than just r6xx+.
v3: properly enable EOP interrupts
Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=29972
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_device.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index cfc162d..8adfedf 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -208,6 +208,8 @@ int radeon_wb_init(struct radeon_device *rdev) return r; } + /* disable event_write fences */ + rdev->wb.use_event = false; /* disabled via module param */ if (radeon_no_wb == 1) rdev->wb.enabled = false; @@ -215,8 +217,12 @@ int radeon_wb_init(struct radeon_device *rdev) /* often unreliable on AGP */ if (rdev->flags & RADEON_IS_AGP) { rdev->wb.enabled = false; - } else + } else { rdev->wb.enabled = true; + /* event_write fences are only available on r600+ */ + if (rdev->family >= CHIP_R600) + rdev->wb.use_event = true; + } } dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis"); |