On Mon, 2 Feb 2009, Benjamin Herrenschmidt wrote:
> The PCI 2.x cells used on some 44x SoCs only let us configure the decode
> for the low 32-bit of the incoming PLB addresses. The top 4 bits (this
> is a 36-bit bus) are hard wired to different values depending on the
> specific SoC in use. Our code used to work "by accident" until I added
> support for the ISA memory holes and while at it added more validity
> checking of the addresses.
>
> This patch should bring it back to working condition. It still relies
> on the device-tree being correct but that's somewhat a pre-requisite
> for anything to work anyway.
>
> Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
> ---
>
> This is untested. Geert, can you give it a go on Sequoia and let me
> know if it fixes your problem ?
Thanks, it seems to fix the problems.
Acked-by: Geert Uytterhoeven <geert.uytterhoe...@sonycom.com>
| sequoia:~# lspci -v
| 00:00.0 Bridge: IBM Device 027f
| Subsystem: Applied Micro Circuits Corp. Device cafe
| Flags: bus master, medium devsel, latency 0, IRQ 16
| Memory at <unassigned> (32-bit, prefetchable)
^^^^^^^^^^^^
Is this expected?
| Capabilities: [58] Power Management version 2
|
| 00:0a.0 USB Controller: NEC Corporation USB (rev 43) (prog-if 10 [OHCI])
| Subsystem: DTK Computer PTI-205N USB 2.0 Host Controller
| Flags: bus master, medium devsel, latency 8, IRQ 16
| Memory at 180000000 (32-bit, non-prefetchable) [size=4K]
| Capabilities: [40] Power Management version 2
| Kernel driver in use: ohci_hcd
|
| 00:0a.1 USB Controller: NEC Corporation USB (rev 43) (prog-if 10 [OHCI])
| Subsystem: DTK Computer PTI-205N USB 2.0 Host Controller
| Flags: bus master, medium devsel, latency 8, IRQ 16
| Memory at 180001000 (32-bit, non-prefetchable) [size=4K]
| Capabilities: [40] Power Management version 2
| Kernel driver in use: ohci_hcd
|
| 00:0a.2 USB Controller: NEC Corporation USB 2.0 (rev 04) (prog-if 20 [EHCI])
| Subsystem: DTK Computer PTI-205N USB 2.0 Host Controller
| Flags: bus master, medium devsel, latency 68, IRQ 16
| Memory at 180002000 (32-bit, non-prefetchable) [size=256]
| Capabilities: [40] Power Management version 2
| Kernel driver in use: ehci_hcd
|
| sequoia:~#
However, 'lsusb' doesn't detect any USB devices connected to the USB PCI card,
except for
the root hubs:
| sequoia:~# lsusb
| Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
| Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
| Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
| sequoia:~#
An E1000 Ethernet card does work fine now.
With kind regards,
Geert Uytterhoeven
Software Architect
Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium
Phone: +32 (0)2 700 8453
Fax: +32 (0)2 700 8622
E-mail: geert.uytterhoe...@sonycom.com
Internet: http://www.sony-europe.com/
A division of Sony Europe (Belgium) N.V.
VAT BE 0413.825.160 · RPR Brussels
Fortis · BIC GEBABEBB · IBAN BE41293037680010
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