xilinx_hwicap driver problems

[Will Kritikos]

Steve,
Yes, this fixed that problem.  the following is now printed when
booting the kernel.

[    5.866230] icap icap.0: Xilinx icap port driver
[    5.866401] icap icap.0: ioremap 40200000 to c5000000 with size 10000

The icap is at address 0x40200000 on my system, so that seems correct.

However, when I copy partial bitstreams to the device, I get strange
results.  Here is what I am seeing.

 # mknod /dev/icap c 259 0
# cp opb_prr_0_lin_partial.bit /dev/icap
cp: write error: Bad address
# cp opb_prr_0_lin_partial.bit /dev/icap
[   66.566107] icap icap.0: Failed to open file#
# cp opb_prr_0_lin_partial.bit /dev/icap
#

I know that this file exists in the current directory, and is a
working partial bitstream.

Thanks for the help.
Will


On Wed, May 14, 2008 at 2:37 PM, Stephen Neuendorffer
<stephen.neuendorffer at xilinx.com> wrote:
>
> I bet you're using ARCH ppc...
>
> It looks like in arch/ppc/syslib/virtex_devices.c:
>
> #define XPAR_HWICAP(num) { \
>        .name = "xilinx_icap", \
>
> Should probably be:
>
> #define XPAR_HWICAP(num) { \
>        .name = "icap", \
>
> now.
>
> Can you make this change locally and verify that it solves the problem?
>
> Steve
>
>> -----Original Message-----
>> From: linuxppc-embedded-bounces+stephen=neuendorffer.name at ozlabs.org
> [mailto:linuxppc-embedded-
>> bounces+stephen=neuendorffer.name at ozlabs.org] On Behalf Of Will
> Kritikos
>> Sent: Wednesday, May 14, 2008 9:03 AM
>> To: linuxppc-embedded at ozlabs.org
>> Subject: xilinx_hwicap driver problems
>>
>> I am having some trouble using the xilinx_hwicap driver in Linux.
>> I am using version 2.6.24-rc8-xlnx of the Linux kernel from the Xilinx
>> GIT repository.
>> The xilinx_hwicap driver is statically compiled in - not a loadable
> module.
>> I am using the opb_hwicap device on a V4FX60 FPGA, Linux running on
> the PPC405.
>>
>> The driver successfully is initialized on boot - I added a printk to
>> the init function to verify this.   However, as far as I can tell, the
>> probe function is never called.  There is nothing in dmesg from the
>> icap driver.
>>
>> After boot, the following files exist in /sys
>>
>> /sys/bus/platform/xilinx_icap.0
>> /sys/bus/platform/drivers/icap/bind
>> /sys/bus/platform/drivers/icap/uevent
>> /sys/bus/platform/drivers/icap/unbind
>> /sys/devices/platform/xilinx_icap.0
>>
>> I can make a device node /dev/icap, major number 259 minor number 0,
>> and copy partial bitstreams to it, but again nothing happens, and no
>> output in dmesg.
>>
>> Any help is appreciated.  I am probably overlooking something simple.
>>
>> Thanks,
>> Will Kritikos
>> _______________________________________________
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>> Linuxppc-embedded at ozlabs.org
>> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
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