karmic ppc fails to load rt2500 pccard

[Jonathan Hudson]

Binary package hint: linux-image

On karmic 9.10 Alpha 4 PPC, with kernel 2.6.31-8-powerpc from a live CD, the rt2500 driver fails to load. dmesg reports:

[ 2665.526752] pci 0001:11:00.0: reg 10 32bit mmio: [0xffffe000-0xffffffff]
[ 2665.744801] rt2500pci 0001:11:00.0: enabling device (0000 -> 0002)
[ 2665.744827] rt2x00pci -> rt2x00pci_probe: Error - PCI DMA not supported.
[ 2665.744851] rt2500pci: probe of 0001:11:00.0 failed with error -5.

No wireless device is created.

The same device works fine in the Jaunty kernel and with kernel.org 2.6.29

[Jonathan Hudson (jh+lpd)]

The hardware is a Powerbook G4. dmesg attached.

[Jonathan Hudson (jh+lpd)]

The alpha 6 kernel (specifically the daily of 2009-09-29), as the Alpha 6 one didn't boot at all, also exhibits this bug, which is not limited to the Rt2500 card, but also applies to other PCCARD devices, e.g. a b43 card:

[ 541.024180] pci 0001:11:00.0: reg 10 32bit mmio: [0xffffe000-0xffffffff]
[ 541.590906] rt2500pci 0001:11:00.0: enabling device (0000 -> 0002)
[ 541.590930] rt2x00pci -> rt2x00pci_probe: Error - PCI DMA not supported.
[ 541.590952] rt2500pci: probe of 0001:11:00.0 failed with error -5
[ 604.188179] pcmcia_socket pcmcia_socket0: pccard: card ejected from slot 0
[ 782.908828] kjournald starting. Commit interval 5 seconds
[ 782.909231] EXT3 FS on hda3, internal journal
[ 782.909242] EXT3-fs: mounted filesystem with writeback data mode.
[ 849.976126] pcmcia_socket pcmcia_socket0: pccard: CardBus card inserted into slot 0
[ 849.976171] pci 0001:11:00.0: reg 10 32bit mmio: [0x000000-0x001fff]
[ 849.976407] b43-pci-bridge 0001:11:00.0: enabling device (0000 -> 0002)
[ 849.980145] b43-phy3: Broadcom 4306 WLAN found (core revision 5)
[ 850.029741] phy3: Selected rate control algorithm 'minstrel'
[ 850.031446] ssb: Sonics Silicon Backplane found on PCI device 0001:11:00.0
[ 850.144141] b43 ssb1:0: firmware: requesting b43/ucode5.fw
[ 850.154907] b43 ssb1:0: firmware: requesting b43/pcm5.fw
[ 850.169967] b43 ssb1:0: firmware: requesting b43/b0g0initvals5.fw
[ 850.184863] b43 ssb1:0: firmware: requesting b43/b0g0bsinitvals5.fw
[ 850.316136] b43-phy3: Loading firmware version 478.104 (2008-07-01 00:50:23)
[ 850.376200] b43-phy3 ERROR: The machine/kernel does not support the required 30-bit DMA mask
[ 851.504153] b43-phy3 ERROR: Microcode not responding

[Jonathan Hudson (jh+lpd)]

Forgot to mention that this bug also applies to upstream (kernel.org) 2.6.31 kernels as well

[Jonathan Hudson (jh+lpd)]

A patch was published 2009-12-09 by Benjamin Herrenschmidt <email address hidden> "[PATCH] cardbus: Add a fixup hook and fix powerpc" that fixes this problem.

The patch applies with offset against 2.6.31 kernels, and cleanly against 2.6.32. The patch uploaded against https://bugs.launchpad.net/bugs/455723, and is found at http://launchpadlibrarian.net/36634049/cardbus.patch.