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authorJerome Glisse <glisse@freedesktop.org>2009-06-17 13:28:30 +0200
committerDave Airlie <airlied@redhat.com>2009-06-19 09:32:27 +1000
commit068a117ca38f27c9641db7642f24fe9270d9424e (patch)
treee1038db118114aa777312a5eae70b512fa13617b /drivers/gpu/drm/radeon/radeon_device.c
parent8b5c744485b75d940ccb1c83c9a358b20eb91346 (diff)
drm/radeon: command stream checker for r3xx-r5xx hardware
For security purpose we want to make sure the userspace process doesn't access memory beyond buffer it owns. To achieve this we need to check states the userspace program. For color buffer and zbuffer we check that the clipping register will discard access beyond buffers set as color or zbuffer. For vertex buffer we check that no vertex fetch will happen beyond buffer end. For texture we check various texture states (number of mipmap level, texture size, texture depth, ...) to compute the amount of memory the texture fetcher might access. The command stream checking impact the performances so far quick benchmark shows an average of 3% decrease in fps of various applications. It can be optimized a bit more by caching result of checking and thus avoid a full recheck if no states changed since last check. Note that this patch is still incomplete on checking side as it doesn't check 2d rendering states. Signed-off-by: Jerome Glisse <jglisse@redhat.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.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 5fd2b639bf6..f30aa7274a5 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -470,6 +470,10 @@ int radeon_device_init(struct radeon_device *rdev,
if (r) {
return r;
}
+ r = radeon_init(rdev);
+ if (r) {
+ return r;
+ }
/* Report DMA addressing limitation */
r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(32));