On Sat, Sep 10, 2011 at 12:35 PM, Vipin vj358@nyu.edu wrote:
Hello,
First, my system set up
Fedora 14 Before : 2.6.35.6 booted with drm.debug=0x07
I see drm:r600_irq_process, IH: CP int: 0x00000000 and No IH: CP EOP
with the default fedora 14 install with the above mentioned kernel
After: 3.0.3 booted with drm.debug=0x07 When I recompile my kernel, I don't see any CP int: , but only CP EOP interrupts.
I have seen this behaviour across two machines one with fedora install & another with an ubuntu 10.10 (2.6.35.28 -> 3.0.3)
The code in r600.c specified plain switch based on the received case. Does this mean the case 176-178 are not executed when I recompile the kernel ? which doesn't sound right because its being shown in the previous kernel ?
Am I doing any mistake ? Any missing option in kernel configuration ? but then I shouldn't even see CP EOP.
Firmware exists in /lib/firmware/radeon
Any further pointers are appreciated. Please ask for more information.
The CP interrupt and the CP EOP interrupt are different interrupts. The driver uses them for the same purpose. Older kernels use the CP int and newer kernels use the CP EOP interrupt as that is the preferred method of operation for what we are using it for (GPU fences).
Alex