On 07/01/2014 18:17, Steven Chamberlain wrote:
>>> It is most interesting that your HD 2400 / RV610 isn't falling back in
>>> the same way as described above.
>>
>> I haven't tried my patch on RV610 yet. I didn't look at the logs though, only
>> that output is deterministically garbled when firmware is not loaded.
>
> Could you check if the modesetting sysctl is really registered or not
> if firmware isn't available?
It is.
Uhm, you're right. It seems that r600.c inits successfully without the firmware
blobs. All it does it disabling 3D acceleration.
I just copied this from the si.c driver. 'pfp' as a placeholder but enough to
test.
I'll give it a try...
--- kfreebsd-10.orig/sys/dev/drm2/radeon/r600.c 2014-01-07 19:15:37.271947000
+0100
+++ kfreebsd-10/sys/dev/drm2/radeon/r600.c 2014-01-07 19:19:53.349946975
+0100
@@ -3012,6 +3012,15 @@
rdev->accel_working = false;
}
+ /* Don't start up if the ?? ucode is missing.
+ * The default clocks and voltages before the ?? ucode
+ * is loaded are not suffient for advanced operations.
+ */
+ if (!rdev->pfp_fw) {
+ DRM_ERROR("radeon: ?? ucode required for R600.\n");
+ return -EINVAL;
+ }
+
return 0;
}
--
Robert Millan
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