linux.git/arch/powerpc/kernel/prom_parse.c, branch v2.6.20

[POWERPC] Workaround oldworld OF bug with IRQs & P2P bridges

2006-12-20T05:37:47+00:00

On some oldworld PowerMacs, OF doesn't assign interrupts properly
beyond P2P bridges. Fortunately, the fix is easy as all those machines
just wire all IRQ lines together to one IRQ which is assigned to the
bridge itself. We already have a special function for parsing Apple
OldWorld interrupts which are special, so let's add to it the ability
to walk up the PCI tree to find interrupts.

This fixes irqs on the lower slots of s900 clones among others.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[POWERPC] Fix OF pci flags parsing

2006-12-04T09:41:49+00:00

For PCI devices with only io ports, of_bus_pci_get_flags() will fall
through and still mark the resource as IORESOURCE_MEM.

Signed-off-by: Olof Johansson 
Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[POWERPC] Fix up the OF functions to only do PCI stuff if PCI is actually configured

2006-10-24T05:01:27+00:00

The original problem that inspired this patch was solved quite some time
ago (Turning off PCI didn't work), but this patch neatens things up a
little (I think), by putting all the PCI stuff inside a single CONFIG_PCI
block.  It also removes the OF PCI bus matching entries if CONFIG_PCI is
off.

Signed-off-by: Paul Mackerras

Revert "[POWERPC] Don't get PCI IRQ from OF for devices with no IRQ"

2006-10-08T22:38:22+00:00

This reverts commit 41550c5128150175197257b6ceab2cd50dea7b51.

Quoth Ben Herrenschmidt:
 "Please revert this one for now.  It seems to break G5s :( Looks like
  PCI cells inside Apple IO ASICs don't have a PCI_INTERRUPT_LINE set.
  I need to figure out a better fix."

Signed-off-by: Linus Torvalds

[POWERPC] Don't get PCI IRQ from OF for devices with no IRQ

2006-10-06T11:10:41+00:00

This patch adds checking of the PCI_INTERRUPT_PIN register before
using standard OF parsing to retreive PCI interrupts. The reason is
that some PCI devices may have no PCI interrupt, though they may have
interrupts attached via other means. In this case, we shall not use
irq->pdev, but device-specific code can later retreive those interrupts
instead.

Without that patch, Maple and derivatives don't get the right interrupt
for the second IDE channel as the linux IDE code fallsback to the PCI
irq instead of trying to use the legacy ones for the on-board controller
(which has no PCI_INTERRUPT_PIN). Having no PCI IRQ assign to it (as it
doesn't request any) fixes it.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

Merge branch 'merge'

2006-08-31T05:45:48+00:00

[POWERPC] Make OF irq map code detect more error cases

2006-08-30T04:31:03+00:00

Device-tree bugs on js20 with some versions of SLOF were causing the
interrupt for IDE to not be parsed correctly and fail to boot. This
patch adds a bit more sanity checking to the parser to detect some of
those errors and fail instead of returning bogus information.  The
powerpc PCI code can then trigger a fallback that works on those
machines.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

Merge branch 'merge'

2006-08-25T04:56:07+00:00

[POWERPC] Fix compile problem without CONFIG_PCI

2006-08-23T07:12:33+00:00

Compile fails without defining CONFIG_PCI.
The patch fix this.

[paulus@samba.org: Moved of_irq_pci_swizzle so we only need one #ifdef]

Signed-off-by: Li Yang 
Signed-off-by: Paul Mackerras

Merge branch 'merge'

2006-08-01T00:37:25+00:00