[PATCH] drm/radeon/kms/NI: don't load if MC ucode is not available
Alex Deucher
alexdeucher at gmail.com
Wed Feb 2 09:53:19 PST 2011
The default clocks and voltages are not sufficient for
advanced operation. On prior asics, the MC ucode
was loaded by the vbios during asic_init so they did not
have this limitation.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=26812
Signed-off-by: Alex Deucher <alexdeucher at gmail.com>
---
drivers/gpu/drm/radeon/evergreen.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index d404522..993a7cd 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3132,6 +3132,18 @@ int evergreen_init(struct radeon_device *rdev)
rdev->accel_working = false;
}
}
+
+ /* Don't start up if the MC ucode is missing.
+ * The default clocks and voltages before the MC ucode
+ * is loaded are not suffient for advanced operations.
+ */
+ if (ASIC_IS_DCE5(rdev)) {
+ if (!rdev->mc_fw) {
+ DRM_ERROR("radeon: MC ucode required for NI+.\n");
+ return -EINVAL;
+ }
+ }
+
return 0;
}
--
1.7.1.1
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