Commit Graph

75417 Commits

Author SHA1 Message Date
Becky Bruce
c51a3fdc0a [POWERPC] Fixup use of phys_addr_t in mpic code
The mpic_map() and __mpic_map_mmio() need to use phys_addr_t for the
physical address they are passed.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:32:33 -06:00
Kumar Gala
82f0183ef3 [POWERPC] Remove update_bridge_resource
The 85xx/86xx pci code no longer uses update_bridge_resource and it was the
only caller.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:32:30 -06:00
Kumar Gala
72b122cc30 [POWERPC] FSL: Rework PCI/PCIe support for 85xx/86xx
The current PCI code for Freescale 85xx/86xx was treating the virtual
P2P PCIe bridge as a transparent bridge.  Rather than doing that fixup
the virtual P2P bridge by copying the resources from the PHB.

Also, fixup a bit of the code for dealing with resource_size_t being
64-bits and how we set ATMU registers for >4G.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:31:16 -06:00
Kumar Gala
b188b2aefe [POWERPC] Fixup transparent P2P resources
For transparent P2P bridges the first 3 resources may get set from based on
BAR registers and need to get fixed up. Where as the remainder come from the
parent bus and have already been fixed up.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:30:33 -06:00
Kumar Gala
96d69c31c5 [POWERPC] Ensure we only handle PowerMac PCI bus fixup for memory resources
The fixup code that handles the case for PowerMac's that leave bridge
windows open over an inaccessible region should only be applied to
memory resources (IORESOURCE_MEM).  If not we can get it trying to fixup
IORESOURCE_IO on some systems since the other conditions that are used to
detect the case can easily match for IORESOURCE_IO.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:30:28 -06:00
Kumar Gala
f98eeb4eb1 [POWERPC] Fix handling of memreserve if the range lands in highmem
There were several issues if a memreserve range existed and happened
to be in highmem:

* The bootmem allocator is only aware of lowmem so calling
  reserve_bootmem with a highmem address would cause a BUG_ON
* All highmem pages were provided to the buddy allocator

Added a lmb_is_reserved() api that we now use to determine if a highem
page should continue to be PageReserved or provided to the buddy
allocator.

Also, we incorrectly reported the amount of pages reserved since all
highmem pages are initally marked reserved and we clear the
PageReserved flag as we "free" up the highmem pages.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:29:08 -06:00
Paul Mackerras
52920df4aa Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/olof/pasemi into for-2.6.25 2008-01-17 16:17:58 +11:00
Jon Loeliger
0173d422aa [POWERPC] Use <linux/of_{platform, device}.h> and not <asm/...> variants.
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:58:57 +11:00
Stephen Rothwell
0a4690cf75 [POWERPC] Check that the syscall table matches the syscall numbers
Also check that __NR_syscalls has been updated appropriately.

Hopefully this will catch any out of order additions to the
table in the future.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:38 +11:00
Jon Tollefson
4ec161cf73 [POWERPC] Add hugepagesz boot-time parameter
This adds the hugepagesz boot-time parameter for ppc64.  It lets one
pick the size for huge pages.  The choices available are 64K and 16M
when the base page size is 4k.  It defaults to 16M (previously the
only only choice) if nothing or an invalid choice is specified.

Tested 64K huge pages successfully with the libhugetlbfs 1.2.

Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:36 +11:00
Mark A. Greer
5b14e5f9dd [POWERPC] #address-cells & #size-cells properties are not inherited
Fix error in booting-without-of.txt that indicates that a node can inherit
its #address-cells and #size-cells definitions from its parent's parent.
This is not correct.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:35 +11:00
Stephen Rothwell
10804f0fb8 [POWERPC] therm_adt746x: Eliminate some build warnings
We don't care if the device_create_file calls fail, the driver will work
just as well without them, so just issue a runtime warning.

drivers/macintosh/therm_adt746x.c: In function 'thermostat_init':
drivers/macintosh/therm_adt746x.c:615: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:616: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:617: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:618: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:619: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:620: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:621: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:622: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:623: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_adt746x.c:625: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:31 +11:00
Stephen Rothwell
98894dffaf [POWERPC] therm_windtunnel: Eliminate some build warnings
We don't care if the device_create_file calls fail, the driver will work
just as well without them, so just issue a runtime warning.

drivers/macintosh/therm_windtunnel.c: In function 'setup_hardware':
drivers/macintosh/therm_windtunnel.c:268: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_windtunnel.c:269: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:27 +11:00
Stephen Rothwell
85e99b9fff [POWERPC] arch/powerpc/kernel: Use for_each_child_of_node
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:20 +11:00
Grant Likely
e25c47ffa9 [POWERPC] cell: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:15 +11:00
Grant Likely
d518b71784 [POWERPC] powermac: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:14 +11:00
Stephen Rothwell
97759e494e [POWERPC] therm_pm72: Suppress some compile warnings
We don't really care if any of these calls to device_create_file fails,
so just issue warnings in that case.

drivers/macintosh/therm_pm72.c: In function 'init_cpu_state':
drivers/macintosh/therm_pm72.c:1185: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1186: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1187: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1188: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1189: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1191: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1192: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1193: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1194: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1195: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c: In function 'init_backside_state':
drivers/macintosh/therm_pm72.c:1383: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1384: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c: In function 'init_drives_state':
drivers/macintosh/therm_pm72.c:1503: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1504: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c: In function 'init_dimms_state':
drivers/macintosh/therm_pm72.c:1625: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c: In function 'init_slots_state':
drivers/macintosh/therm_pm72.c:1743: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result
drivers/macintosh/therm_pm72.c:1744: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:12 +11:00
Jochen Friedrich
9eb81bdf12 [POWERPC] Update .gitignore files
Update .gitignore as needed by dtc addition.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:09 +11:00
Stephen Rothwell
66524b220a [POWERPC] pci_32.c: Use for_each_child_of_node
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:08 +11:00
Stephen Rothwell
acaa617620 [POWERPC] eeh.c: Use for_each_child_of_node
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:07 +11:00
Stephen Rothwell
885b86e4e7 [POWERPC] iSeries: eliminate pci_dn bussubno
xlate_iomm_address() really wants the ds_addr to pass to the HV, so store
that value (instead of the BAR number) when we allocate the device bars.
This is not a fast path, so we can look up the device_node property
there instead of using the bussubno field of the pci_dn.

The other user of iseries_ds_addr() was already scanning the device tree,
so looking up a property will not slow it down any more.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:05 +11:00
Stephen Rothwell
b6ed42a794 [POWERPC] The pci_dn pcidev is only used by EEH
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:01 +11:00
Stephen Rothwell
86bcab492c [POWERPC] The pci_dn class_code is only used by EEH
... so move it into the #ifdef CONFIG_EEH section.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:00 +11:00
Anton Vorontsov
253772b151 [POWERPC] booting-without-of: localbus should not include board name
Fix documentation once and for ever, because I'm pretty tired of
repeating that I am merely following it. ;-)

http://ozlabs.org/pipermail/linuxppc-dev/2007-December/048096.html

http://ozlabs.org/pipermail/linuxppc-dev/2007-November/046977.html
http://ozlabs.org/pipermail/linuxppc-dev/2007-November/046979.html

http://ozlabs.org/pipermail/linuxppc-dev/2007-October/044411.html
http://ozlabs.org/pipermail/linuxppc-dev/2007-October/044413.html

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:56:59 +11:00
Cyrill Gorcunov
dc2e425857 [POWERPC] Use for_each macros in arch/powerpc/platforms/powermac
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:56:57 +11:00
Cyrill Gorcunov
3329c0d1b2 [POWERPC] Use for_each macros in arch/powerpc/kernel
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:56:55 +11:00
Cyrill Gorcunov
26cb7d8bbd [POWERPC] Use for_each macros in arch/powerpc/sysdev
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:56:54 +11:00
Grant Likely
283029d16a [POWERPC] Add of_find_matching_node() helper function
Similar to of_find_compatible_node(), of_find_matching_node() and
for_each_matching_node() allow you to iterate over the device tree
looking for specific nodes, except that they take of_device_id
tables instead of strings.

This also moves of_match_node() from driver/of/device.c to
driver/of/base.c to colocate it with the of_find_matching_node which
depends on it.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:53:22 +11:00
Geert Uytterhoeven
91bbbe22db [POWERPC] Kill sparse warning in HPTE_V_COMPARE()
Fixes sparse warning: constant 0xffffffffffffff80 is so big it is
unsigned long

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:53:19 +11:00
Olof Johansson
9cd55be4d2 [POWERPC] pasemi: Move electra-ide to pata_of_platform
Move electra-ide glue over to the new pata_of_platform framework, and
add the quirks needed to that driver.

Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-15 10:26:45 -06:00
Anton Vorontsov
61f7162117 libata: pata_of_platform: OF-Platform PATA device driver
This driver nicely wraps around pata_platform library functions,
and provides OF platform bus bindings to the PATA devices.

Also add || PPC to the PATA_PLATFORM's "depends on" Kconfig entry,
needed for PA Semi Electra.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-15 10:23:43 -06:00
Anton Vorontsov
cf03613e96 libata: pata_platform: make probe and remove functions device type neutral
Split pata_platform_{probe,remove} into two pieces:
1. pata_platform_{probe,remove} -- platform_device-dependant bits;
2. __ptata_platform_{probe,remove} -- device type neutral bits.

This is done to not duplicate code for the OF-platform driver.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-15 10:23:41 -06:00
Josh Boyer
98c31c1d6c Merge branch 'virtex-for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-virtex into for-2.6.25 2008-01-11 07:02:57 -06:00
Stephen Neuendorffer
f67702a375 [POWERPC] Xilinx uartlite: Section type fixups
All the __devexit functions are now appropriately tagged.  This fixes
some ppc link warnings.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-09 07:59:00 -07:00
Stephen Neuendorffer
c35a8fb2f2 [POWERPC] Xilinx: updated device tree compatibility to match uboot bsp generator.
Missed this one in the boot loader before.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-09 07:56:31 -07:00
Stephen Neuendorffer
ab99eee8ac [POWERPC] Xilinx: Update booting-without-of.
This now better describes what the UBoot device tree generator
actually does.  In particular:

1) Nodes have a label derived from the device name, and a node name
derived from a generic version of the device type, e.g. 'ethernet',
'serial', etc.

2) Usage of compound nodes (representing more than one device in the
same IP) which actually works.  This requires having a valid
compatible node, and all the other things that a bus normally has.
I've chosen 'xlnx,compound' as the bus name to describe these compound
nodes.

In addition, I've clarified some of the language relating to how mhs
nodes should be represent in the device tree.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-09 07:56:30 -07:00
Stephen Neuendorffer
faa6511109 [POWERPC] Xilinx: Add correct compatible list for device tree bus bindings.
Includes both flavors of plb, opb, dcr, and a pseudo 'compound' bus
for representing compound peripherals containing more than one logical
device.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-09 07:56:29 -07:00
Stephen Neuendorffer
021a607c2f [POWERPC] Xilinx: update compatible list for interrupt controller
These values now match what is generated by the uboot BSP generator.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-09 07:48:31 -07:00
Stefan Roese
78994e240f [POWERPC] 4xx: PCIe: Increase max busses per port to 64
Because of how big mapping the config space is (1M per bus), we limit how
many busses we support for now. In the long run, we could replace that
with something akin to kmap_atomic instead.

This patch changes the limit from currently 16 to 64.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-08 08:05:23 -06:00
Matthias Fuchs
2af59f7d5c [POWERPC] 4xx: Add 405GPr and 405EP support in boot wrapper
This patch adds support for 405GPr processors with optional
new mode strapping. ibm405gp_fixup_clocks() can now be used
for 405GP and 405GPr CPUs.

This is in preparation of porting the cpci405 platform support
from arch/ppc to arch/powerpc.

This patch also adds ibm405ep_fixup_clocks() to support
405EP CPUs from the boot wrapper.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-08 07:58:09 -06:00
Hollis Blanchard
5834584e4e [POWERPC] 4xx: enable built-in networking for Sequoia defconfig
Enable EMAC driver for Sequoia (and while we're in there, disable
Macintosh drivers for Sequoia and Bamboo).

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-08 07:43:57 -06:00
Stefan Roese
7e52b48216 [POWERPC] 4xx: Add EMAC support to Kilauea defconfig
Somehow the EMAC support was dropped (or never really added) to the
Kilauea defconfig file. This patch finally adds EMAC support.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-04 12:52:52 -06:00
Grant Likely
bdddec454c [POWERPC] pasemi: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-02 14:08:42 -06:00
Olof Johansson
f0d4577c4d [POWERPC] pasemi: Fix NMI handling check
The logic that checks to see if a machine check is caused by an NMI will
always match when NMI hasn't been initialized, since the mpic routine
will return NO_IRQ (and that's what the nmi_virq value is as well).

Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-02 12:40:29 -06:00
Grant Likely
1fe1b95d86 [POWERPC] 4xx: typo in calling machine_device_initcall() for Sequoia board
Fix an obvious typo.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-02 11:38:15 -06:00
Paul Mackerras
4f43143f9f Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/pasemi 2007-12-31 13:54:13 +11:00
Paul Mackerras
533b1928b5 Revert "[POWERPC] Disable PCI IO/Mem on a device when resources can't be allocated"
This reverts commit 553aa7659b at Ben H's
request, because it confused IORESOURCE_* flags with command register
bits.

Requested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-31 10:12:45 +11:00
Olof Johansson
90c26375b4 [POWERPC] Enable CONFIG_PCI_MSI and CONFIG_MD in pasemi_defconfig
Enable MSI now that we have an implementation, and enable CONFIG_MD and
the raid options by default as well.

Signed-off-by: Olof Johansson <olof@lixom.net>
2007-12-28 11:02:34 -06:00
Olof Johansson
d87bf3bed7 [POWERPC] pasemi: Distribute interrupts evenly across cpus
By default the OpenPIC on PWRficient will bias to one core (since that
will improve changes of the other core being able to stay idle/powered
down). However, this conflicts with most irq load balancing schemes,
since setting an interrupt to be delivered to either core doesn't really
result in the load being shared. It also doesn't work well with the
soft irq disable feature of PPC, since EE will stay on until the first
interrupt is taken while soft disabled.

Set the gconf0 config bit that enables even distribution of interrupts
among the two cores.

Signed-off-by: Olof Johansson <olof@lixom.net>
2007-12-28 09:22:25 -06:00
Olof Johansson
f365355e65 [POWERPC] pasemi: Implement NMI support
Some PWRficient-based boards have a NMI button that's wired up to a GPIO
as interrupt source. By configuring the openpic accordingly, these get
delivered as a machine check with high priority, instead of as an external
interrupt.

The device tree contains a property "nmi-source" in the openpic node
for these systems, and it's the (hwirq) source for the input.

Also, for these interrupts, the IACK is read from another register than
the regular (MCACK instead), but they are EOI'd as usual. So implement
said function for the mpic driver.

Finally, move a couple of external function defines to include/ instead
of local under sysdev. Being able to mask/unmask and eoi directly saves
us from setting up a dummy irq handler that will never be called.

Signed-off-by: Olof Johansson <olof@lixom.net>
2007-12-28 09:22:24 -06:00