drm/radeon: add pci config hard reset
This is used to hard reset the asic. If a soft
reset is not able to reset things, a hard reset
can be used.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 9dd6cc4..746c0c6 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -140,6 +140,9 @@
#define RADEON_VA_RESERVED_SIZE (8 << 20)
#define RADEON_IB_VM_MAX_SIZE (64 << 10)
+/* hard reset data */
+#define RADEON_ASIC_RESET_DATA 0x39d5e86b
+
/* reset flags */
#define RADEON_RESET_GFX (1 << 0)
#define RADEON_RESET_COMPUTE (1 << 1)
@@ -2675,6 +2678,7 @@
/* Common functions */
/* AGP */
extern int radeon_gpu_reset(struct radeon_device *rdev);
+extern void radeon_pci_config_reset(struct radeon_device *rdev);
extern void r600_set_bios_scratch_engine_hung(struct radeon_device *rdev, bool hung);
extern void radeon_agp_disable(struct radeon_device *rdev);
extern int radeon_modeset_init(struct radeon_device *rdev);