linux-toradex.git/include/linux/of_pci.h, branch v3.14.3

of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.

2013-10-24T10:50:36+00:00

Several architectures open code effectively the same code block for
finding and mapping PCI irqs. This patch consolidates it down to a
single function.

Signed-off-by: Grant Likely 
Acked-by: Michal Simek 
Cc: Russell King 
Cc: Ralf Baechle 
Cc: Benjamin Herrenschmidt

of/irq: Replace of_irq with of_phandle_args

2013-10-24T10:42:51+00:00

struct of_irq and struct of_phandle_args are exactly the same structure.
This patch makes the kernel use of_phandle_args everywhere. This in
itself isn't a big deal, but it makes some follow-on patches simpler.

Signed-off-by: Grant Likely 
Acked-by: Michal Simek 
Acked-by: Tony Lindgren 
Cc: Russell King 
Cc: Ralf Baechle 
Cc: Benjamin Herrenschmidt

of/irq: Rename of_irq_map_* functions to of_irq_parse_*

2013-10-24T10:40:59+00:00

The OF irq handling code has been overloading the term 'map' to refer to
both parsing the data in the device tree and mapping it to the internal
linux irq system. This is probably because the device tree does have the
concept of an 'interrupt-map' function for translating interrupt
references from one node to another, but 'map' is still confusing when
the primary purpose of some of the functions are to parse the DT data.

This patch renames all the of_irq_map_* functions to of_irq_parse_*
which makes it clear that there is a difference between the parsing
phase and the mapping phase. Kernel code can make use of just the
parsing or just the mapping support as needed by the subsystem.

The patch was generated mechanically with a handful of sed commands.

Signed-off-by: Grant Likely 
Acked-by: Michal Simek 
Acked-by: Tony Lindgren 
Cc: Ralf Baechle 
Cc: Benjamin Herrenschmidt

of: pci: add registry of MSI chips

2013-08-12T15:27:01+00:00

This commit adds a very basic registry of msi_chip structures, so that
an IRQ controller driver can register an msi_chip, and a PCIe host
controller can find it, based on a 'struct device_node'.

Signed-off-by: Thomas Petazzoni 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Rob Herring 
Signed-off-by: Jason Cooper

of/pci: Add of_pci_parse_bus_range() function

2013-05-19T20:30:10+00:00

This function can be used to parse a bus-range property as specified by
device nodes representing PCI bridges.

Signed-off-by: Thierry Reding 
Signed-off-by: Jason Cooper

of/pci: Add of_pci_get_devfn() function

2013-05-19T20:30:10+00:00

This function can be used to parse the device and function number from a
standard 5-cell PCI resource. PCI_SLOT() and PCI_FUNC() can be used on
the returned value obtain the device and function numbers respectively.

Signed-off-by: Thierry Reding 
Signed-off-by: Thomas Petazzoni 
Signed-off-by: Jason Cooper

OF: PCI: const usage needed by MIPS

2012-05-21T13:31:48+00:00

On MIPS we want to call of_irq_map_pci from inside

arch/mips/include/asm/pci.h:extern int pcibios_map_irq(
				const struct pci_dev *dev, u8 slot, u8 pin);
For this to work we need to change several functions to const usage.

Signed-off-by: John Crispin 
Cc: linux-pci@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-mips@linux-mips.org
Acked-by: Bjorn Helgaas 
Acked-by: Grant Likely 
Patchwork: https://patchwork.linux-mips.org/patch/3710/
Signed-off-by: Ralf Baechle

pci/of: Match PCI devices to OF nodes dynamically

2011-06-07T23:08:17+00:00

powerpc has two different ways of matching PCI devices to their
corresponding OF node (if any) for historical reasons. The ppc64 one
does a scan looking for matching bus/dev/fn, while the ppc32 one does a
scan looking only for matching dev/fn on each level in order to be
agnostic to busses being renumbered (which Linux does on some
platforms).

This removes both and instead moves the matching code to the PCI core
itself. It's the most logical place to do it: when a pci_dev is created,
we know the parent and thus can do a single level scan for the matching
device_node (if any).

The benefit is that all archs now get the matching for free. There's one
hook the arch might want to provide to match a PHB bus to its device
node. A default weak implementation is provided that looks for the
parent device device node, but it's not entirely reliable on powerpc for
various reasons so powerpc provides its own.

Signed-off-by: Benjamin Herrenschmidt 
Acked-by: Michal Simek 
Acked-by: Jesse Barnes

of/pci: move of_irq_map_pci() into generic code

2011-02-04T18:46:50+00:00

There is a tiny difference between PPC32 and PPC64. Microblaze uses the
PPC32 variant.

Signed-off-by: Sebastian Andrzej Siewior 
[grant.likely@secretlab.ca: Added comment to #endif, moved documentation
	block to function implementation, fixed for non ppc and microblaze
	compiles]
Signed-off-by: Grant Likely