Re: [Bluez-users] bt3c_cs time out - no firmware loaded?

[Marcel Holtmann <marcel@rvs.uni-bielefeld.de>]

Hi Ben,

> > > Hrm... The problem isn't simple. You are just not supposed to tap IOs
> > > that way from userland, especially since PPC arch doesn't have anything
> > > like "PIO" instructions. The IO space of your card is actually mapped
> > > somewhere in physical memory, that "somewhere" not beeing generally
> > > available to userland.
> > > 
> > > Can you tell me more about the card ? Is it a 16 bits PCMCIA device or
> > > is it a cardbus (PCI) one ? Why can't you tap the IOs solely from within
> > > a kernel driver ?
> > 
> > this is a 16 Bit PCMCIA card. We need to load the firmware from
> > userspace, because we can't distribute it within the kernel driver due
> > the legal issues. At the moment we don't even distribute the firmware
> > file with our userspace firmware loader program.
> 
> Can't you do some kind of ioctl or /proc entry to the card's driver
> to pass it the firmware from userland and have the actual IO code in
> the kernel ?

an ioctl is not possible at that time, because we need the firmware
loaded before we can initialise the Bluetooth HCI device. And I don't
want to use the /proc for this kind of stuff. We hopefully will have a
unified interface for this in 2.5 with request_firmware() call and the
sysfs. See current discussion on LKML.

Regards

Marcel




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