Displaying 2 results from an estimated 2 matches for "nvreg_enablemsi".
2015 Jul 23
4
[PATCH] nouveau: nv46: Change mc subdev oclass from nv44 to nv4c
MSI interrupts appear to not work for nv46 based cards. Change the mc
subdev oclass for these cards from nv44 to nv4c, the nv4c mc code is
identical to the nv44 mc code except that it does not use msi
(it does not define a msi_rearm callback).
BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=90435
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
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2015 Jul 27
4
[PATCH] nouveau: nv46: Change mc subdev oclass from nv44 to nv4c
...oesn't/can't use MSI on these too (there might be an alternate method
> we need to use).
>
> Would you be able to grab the latest proprietary driver that works on
> nv4x, and do a mmiotrace of it?
I've grabbed 304.125
> You *might* need to use "modprobe
> nvidia NVreg_EnableMSI=1", because at some point NVIDIA didn't use it
> by default anywhere.
You're right I needed to specify NVreg_EnableMSI=1, with that set
/proc/interrupts shows that MSI is used.
Here is an of running glxgears with the binary driver using msi interrupts mmiotrace:
https://fedorapeo...