Hi Ben,
On Tue, Mar 04, 2008 at 08:26:14AM +1100, Benjamin Herrenschmidt wrote:
>
> > > Maybe your PCI interrupt-map is wrong...
> >
> > Is the PCI-interrupt map that part of the dts file :
> >
> > interrupt-map = <
> >
> > /* IDSEL 0x02 */
> > 1000 0 0 1 &mpic 1 1
> > 1000 0 0 2 &mpic 2 1
> > 1000 0 0 3 &mpic 3 1
> > 1000 0 0 4 &mpic 4 1
> >
> > /* IDSEL 0x03 */
> > 1800 0 0 1 &mpic 4 1
> > 1800 0 0 2 &mpic 1 1
> > 1800 0 0 3 &mpic 2 1
> > 1800 0 0 4 &mpic 3 1
> >
> > ...
> >
> > I do not understand anything there :(
>
> It's documented in booting-without-of.txt afaik... The interrupt-map
> goes along with the interrupt-map-mask. The later defines which bits of
> the map are relevant.
Maybe I should read my mail in time-of-arrival order :)
>
> The first part of the map is 3 cells containing a PCI address, followed
> by a cell containing a PCI IRQ line (1=A....4=D). The next is the parent
> interrupt controller, followed by the IRQ specification, which for MPIC
> is the interrupt number on that controller, followed by an encoding of
> the interrupt polarity & trigger type (1 for level-low).
>
> The first part, the PCI address, has a special format, which should be
> documented as well in the document I pointed out. For readability, we
> ommited the top 16 bits of the first cell, which are the address type
> and bus number, mostly irrelevant for interrupt mapping. The next bits
> are the device/function. Usually only the device part is unmasked.
1. Can all that info be found in /proc in a running system or even in the
sources, or do I need an hardware doc for that ?
2. Maybe you could explain the conversion between the kernel/lsusb notation
(0000:00:12.0, 0000:00:12.1, 0000:00:12.2)
or /proc/bus/pci notation :
0090 104cac46 35 9ffff000 0
0 0 0 0
0 1000 0
0 0 0 0
0 yenta_cardbus
0091 104cac46 36 9fbfe000 0
0 0 0 0
0 1000 0
0 0 0 0
0 yenta_cardbus
0092 104c802a 37 9f7fd800 9f7f8000
0 0 0 0
0 800 4000
0 0 0 0
0 ohci1394
and dts-notation ?
Thanks for listening
Philippe
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