drm/amdgpu: fix VA hole handling on Vega10 v3

Similar to the CPU address space the VA on Vega10 has a hole in it.

v2: use dev_dbg instead of dev_err
v3: add some more comments to explain how the hw works

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index c16579287aee..59c9facf9bd7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -564,6 +564,17 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
                 return -EINVAL;
         }
 
+        if (args->va_address >= AMDGPU_VA_HOLE_START &&
+            args->va_address < AMDGPU_VA_HOLE_END) {
+                dev_dbg(&dev->pdev->dev,
+                        "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n",
+                        args->va_address, AMDGPU_VA_HOLE_START,
+                        AMDGPU_VA_HOLE_END);
+                return -EINVAL;
+        }
+
+        args->va_address &= AMDGPU_VA_HOLE_MASK;
+
         if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
                 dev_err(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
                         args->flags);