On Tue, Jul 31, 2012 at 10:41 AM, Konstantin Belousov
wrote:
>> It's a bit of a hack, but if you are root, you can access physical
>> memory via /dev/mem.
>>
>> memfd = open(/dev/mem)
>> ptr = mmap(NULL, bar_size, PROT_READ, 0, memfd, bar_address);
>>
>> You can even use dd:
>>
>> dd if=/dev/mem b
On Tue, Jul 31, 2012 at 10:15:22AM -0700, Artem Belevich wrote:
> On Tue, Jul 31, 2012 at 5:48 AM, Venkat Duvvuru
> wrote:
> > Hi,
> > How to mmap PCI BARs from userland in freebsd?
> > In Linux the PCI BAR appears as a file in the sysfs file system. How can I
> > access PCI BAR as a file in free
On Tue, Jul 31, 2012 at 5:48 AM, Venkat Duvvuru
wrote:
> Hi,
> How to mmap PCI BARs from userland in freebsd?
> In Linux the PCI BAR appears as a file in the sysfs file system. How can I
> access PCI BAR as a file in freebsd to mmap it?
It's a bit of a hack, but if you are root, you can access p
On Tuesday, July 31, 2012 12:14:41 pm Adrian Chadd wrote:
> On 31 July 2012 08:22, Venkat Duvvuru wrote:
> > Hi John,
> > Thanks for your response.
> > Is there an alternative to mmap the PCI BARs, I mean without implementing
> > an mmap method in the driver, something like a pci subsystem mmap in
On 31 July 2012 08:22, Venkat Duvvuru wrote:
> Hi John,
> Thanks for your response.
> Is there an alternative to mmap the PCI BARs, I mean without implementing
> an mmap method in the driver, something like a pci subsystem mmap in Linux.
> Linux allows to mmap PCI BARs without any change in the de
On Tuesday, July 31, 2012 11:22:25 am Venkat Duvvuru wrote:
> Hi John,
> Thanks for your response.
> Is there an alternative to mmap the PCI BARs, I mean without implementing
> an mmap method in the driver, something like a pci subsystem mmap in Linux.
> Linux allows to mmap PCI BARs without any ch
Hi John,
Thanks for your response.
Is there an alternative to mmap the PCI BARs, I mean without implementing
an mmap method in the driver, something like a pci subsystem mmap in Linux.
Linux allows to mmap PCI BARs without any change in the device driver.
/Venkat
On Tue, Jul 31, 2012 at 7:21 PM,
On Tuesday, July 31, 2012 8:48:00 am Venkat Duvvuru wrote:
> Hi,
> How to mmap PCI BARs from userland in freebsd?
> In Linux the PCI BAR appears as a file in the sysfs file system. How can I
> access PCI BAR as a file in freebsd to mmap it?
You can export a BAR via a d_mmap() method from a cdevsw
