[Ipodlinux-devel] 3g firewire success

[PALFFY D. <dp...@ra...>]

Hi!

The problem with the 3g ipod forewire driver seems to be found.

The hardware is capable to do direct DMA transfers between the firewire
controller and the hard disk, and to support this, we think that the apple
firmware does some interrupt setup in the firewire init routine. This
kills the ide driver under linux (and is not used anyways), so it had to
be removed.

Quick howto:

- Take the 2.4.24-uc0 kernel, and use the current ipodlinux CVS (older
  versions wont work).
- edit arch/armnommu/mach-ipod/tsb42aa82.c:
  #undef IPOD_2G, and #define IPOD_3G on lines 37-38
  comment out lines 1036-1038: (Bern, you might want to commit this)
	/*	outl(inl(0xcf00000c) | (1<<7), 0xcf00000c);
                outl(inl(0xcf00001c) | (1<<7), 0xcf00001c);
                outl(inl(0xcf00002c) & ~(1<<7), 0xcf00002c); */
- build the kernel and modules and install these.

On the host side you will need a 2.4 kernel (2.6 doesn't work and causes
panics on the ipod!). If you have 2.4.21 or later (IIRC), put an #if 0
around the body of nodemgr_do_irm_duties() in drivers/ieee1394/nodemgr.c.
Copy drivers/ieee1394/eth1394.[ch] over from the ipodlinux CVS tree into
your kernel sources (the stock version doesn't work). Apply the patch from
http://ipodlinux.sourceforge.net/manual.shtml to eth1394.c and build the
kernel for the host. Now everything should work as described in the
docs, telnet, etc work fine.

--
Daniel
			...and Linux for all.