linux-toradex.git/arch/powerpc/kernel/pci_32.c, branch v2.6.30.8

powerpc/pci: Fix PCI<->OF matching of old style multifunc devices

2009-02-22T23:48:57+00:00

Old OF variants used to create a 'dummy' parent node "multifunc-device"
for devices with more than one PCI function. Our code that matches OF
nodes to PCI devices dealt with that in one place but not in another,
this fixes it.

This has the practical effect of fixing interrupt routing of multifunction
PCI cards on some older PowerMac machines.

Signed-off-by: Tom Arbuckle 
Signed-off-by: Benjamin Herrenschmidt

powerpc/pci: Move hose_list and pci_address_to_pio to pci-common

2009-02-11T05:00:07+00:00

move the definition of hose_list next to its hotplug spinlock.

create pcibios_io_size to encapsulate ifdef in existing pci-common
function pcibios_vaddr_is_ioport

move pci_address_to_pio to pci-common, using new pcibios_io_size, and
protect this GPL exported function against concurrent hotplug removal

Signed-off-by: Milton Miller 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Remove `have_of' global variable

2008-12-16T04:52:57+00:00

The `have_of' variable is a relic from the arch/ppc time, it isn't
useful nowadays.

Signed-off-by: Anton Vorontsov 
Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

powerpc/pci: Remove pcibios_do_bus_setup()

2008-11-05T11:11:53+00:00

The function pcibios_do_bus_setup() was used by pcibios_fixup_bus()
to perform setup that is different between the 32-bit and 64-bit
code.  This difference no longer exists, thus the function is removed
and the setup now done directly from pci-common.c.

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

powerpc/pci: Use common PHB resource hookup

2008-11-05T11:11:53+00:00

The 32-bit and 64-bit powerpc PCI code used to set up the resource
pointers of the root bus of a given PHB in completely different
places.

This unifies this in large part, by making 32-bit use a routine very
similar to what 64-bit does when initially scanning the PCI busses.

The actual setup of the PHB resources itself is then moved to a
common function in pci-common.c.

This should cause no functional change on 64-bit.  On 32-bit, the
effect is that the PHB resources are going to be setup a bit earlier,
instead of being setup from pcibios_fixup_bus().

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

powerpc/pci: Cleanup debug printk's

2008-11-05T11:11:53+00:00

This removes the various DBG() macro from the powerpc PCI code and
makes it use the standard pr_debug instead.

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

powerpc: Fix link errors on 32-bit machines using legacy DMA

2008-10-14T23:13:29+00:00

The new merged DMA code will try to access isa_bridge_pcidev when
trying to DMA to/from legacy devices. This is however only defined
on 64-bit. Fixes this for now by adding the variable, even if it
stays NULL. In the long run, we'll make isa-bridge.c common to
32 and 64-bit.

Signed-off-by: Benjamin Herrenschmidt

powerpc/fsl: Hide MPC5121 pci bridge.

2008-10-13T16:09:58+00:00

The class of the MPC5121 pci host bridge is PCI_CLASS_BRIDGE_OTHER
while other freescale host bridges have class set to
PCI_CLASS_PROCESSOR_POWERPC.

This patch makes fixup_hide_host_resource_fsl match
PCI_CLASS_BRIDGE_OTHER in addition to PCI_CLASS_PROCESSOR_POWERPC.

Signed-off-by: John Rigby 
Signed-off-by: Kumar Gala

powerpc: Merge 32 and 64-bit dma code

2008-09-24T21:26:45+00:00

We essentially adopt the 64-bit dma code, with some changes to support
32-bit systems, including HIGHMEM.  dma functions on 32-bit are now
invoked via accessor functions which call the correct op for a device based
on archdata dma_ops.  If there is no archdata dma_ops, this defaults
to dma_direct_ops.

In addition, the dma_map/unmap_page functions are added to dma_ops
because we can't just fall back on map/unmap_single when HIGHMEM is
enabled. In the case of dma_direct_*, we stop using map/unmap_single
and just use the page version - this saves a lot of ugly
ifdeffing.  We leave map/unmap_single in the dma_ops definition,
though, because they are needed by the iommu code, which does not
implement map/unmap_page.  Ideally, going forward, we will completely
eliminate map/unmap_single and just have map/unmap_page, if it's
workable for 64-bit.

Signed-off-by: Becky Bruce 
Signed-off-by: Kumar Gala

[POWERPC] Remove update_bridge_resource

2008-01-24T01:32:30+00:00

The 85xx/86xx pci code no longer uses update_bridge_resource and it was the
only caller.

Signed-off-by: Kumar Gala