drm/radeon: add a bios scratch asic hung helper

Used by all asic families from r600+.
Flag for the vbios and later instances of the driver
that the GPU is hung.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 835992d8d067..af9e86d2fc07 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1422,6 +1422,8 @@ static int cayman_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask)
         if (reset_mask == 0)
                 return 0;
 
+        r600_set_bios_scratch_engine_hung(rdev, true);
+
         dev_info(rdev->dev, "GPU softreset: 0x%08X\n", reset_mask);
 
         dev_info(rdev->dev, "  VM_CONTEXT0_PROTECTION_FAULT_ADDR   0x%08X\n",
@@ -1448,6 +1450,9 @@ static int cayman_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask)
         udelay(50);
 
         evergreen_mc_resume(rdev, &save);
+
+        r600_set_bios_scratch_engine_hung(rdev, false);
+
         return 0;
 }