linux.git/arch/x86/kernel/devicetree.c, branch v3.10

x86: dt: Use linear irq domain for ioapic(s)

2012-08-21T20:16:57+00:00

The former conversion to irq_domain_add_legacy() did not fully work
since we miss the irq decs for NR_IRQS_LEGACY+.

Ideally we could use irq_domain_add_simple() or the no-map variant (and
program the virq <-> line mapping directly into ioapic) but this would
require a different irq lookup in "do_IRQ()" and won't work with ACPI
without changes. So this is probably easiest for everyone.

Tested-by: Thierry Reding 
Signed-off-by: Sebastian Andrzej Siewior 
Cc: Grant Likely 
Link: http://lkml.kernel.org/r/20120813202304.GA3529@breakpoint.cc
Signed-off-by: Thomas Gleixner

irq_domain/x86: Convert x86 (embedded) to use common irq_domain

2012-02-23T21:37:47+00:00

This patch removes the x86-specific definition of irq_domain and replaces
it with the common implementation.

Signed-off-by: Grant Likely 
Acked-by: Sebastian Andrzej Siewior 
Cc: Rob Herring 
Cc: Thomas Gleixner

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31T23:30:35+00:00

These files were implicitly getting EXPORT_SYMBOL via device.h
which was including module.h, but that will be fixed up shortly.

By fixing these now, we can avoid seeing things like:

arch/x86/kernel/rtc.c:29: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL’
arch/x86/kernel/pci-dma.c:20: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL’
arch/x86/kernel/e820.c:69: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL_GPL’

[ with input from Randy Dunlap  and also
  from Stephen Rothwell  ]

Signed-off-by: Paul Gortmaker

Merge branch 'of-pci' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

2011-07-22T21:54:02+00:00

* 'of-pci' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  pci/of: Consolidate pci_bus_to_OF_node()
  pci/of: Consolidate pci_device_to_OF_node()
  x86/devicetree: Use generic PCI <-> OF matching
  microblaze/pci: Move the remains of pci_32.c to pci-common.c
  microblaze/pci: Remove powermac originated cruft
  pci/of: Match PCI devices to OF nodes dynamically

x86: devicetree: Add missing early_init_dt_setup_initrd_arch stub

2011-06-09T13:39:43+00:00

This patch fixes the following build failure:

drivers/built-in.o: In function `early_init_dt_check_for_initrd':
/home/florian/dev/kernel/x86/linux-2.6-x86/drivers/of/fdt.c:571:
undefined reference to `early_init_dt_setup_initrd_arch'
make: *** [.tmp_vmlinux1] Error 1

which happens as soon as we enable initrd support on a x86 devicetree
platform such as Intel CE4100.

Signed-off-by: Florian Fainelli 
Acked-by: Grant Likely 
Cc: Maxime Bizon 
Acked-by: Sebastian Andrzej Siewior 
Cc: stable@kernel.org # 2.6.39
Link: http://lkml.kernel.org/r/201106061015.50039.ffainelli@freebox.fr
Signed-off-by: Thomas Gleixner

x86/devicetree: Use generic PCI <-> OF matching

2011-06-07T23:08:40+00:00

Instead of walking the whole PCI tree to update the of_node's for
PCI busses and devices after the fact, enable the new generic core
code for doing so by providing the proper device nodes for the
PCI host bridges

Signed-off-by: Benjamin Herrenschmidt 
Acked-by: Grant Likely 
Tested-by: Sebastian Andrzej Siewior

x86, ioapic: Consolidate gsi routing info into 'struct ioapic'

2011-05-20T11:41:01+00:00

Signed-off-by: Suresh Siddha 
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233157.994002011@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar

x86, ioapic: Consolidate mp_ioapics[] into 'struct ioapic'

2011-05-20T11:40:59+00:00

Signed-off-by: Suresh Siddha 
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233157.909013179@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar

x86: devicetree: Configure IOAPIC pin only once

2011-04-28T09:38:30+00:00

We use io_apic_setup_irq_pin() in order to configure pin's interrupt
number polarity and type. This is done on every irq_create_of_mapping()
which happens for instance during pci enable calls. Level typed
interrupts are masked by default, edge are unmasked.

On the first ->xlate() call the level interrupt is configured and
masked. The driver calls request_irq() and the line is unmasked. Lets
assume the interrupt line is shared with another device and we call
pci_enable_device() for this device. The ->xlate() configures the pin
again and it is masked. request_irq() does not unmask the line because
it _is_ already unmasked according to its internal state. So the
interrupt will never be unmasked again.

This patch is based on an earlier work by Torben Hohn and solves the
problem by configuring the pin only once. Since all devices must agree
on the same type and polarity there is no point in configuring the pin
more than once.

[ tglx: Split out the ce4100 part into a separate patch ]

Cc: Torben Hohn 
Signed-off-by: Sebastian Andrzej Siewior 
Link: http://lkml.kernel.org/r/%3C20110427143052.GA15211%40linutronix.de%3E
Signed-off-by: Thomas Gleixner

x86: DT: Cleanup namespace and call irq_set_irq_type() unconditional

2011-03-24T22:17:56+00:00

That call escaped the name space cleanup. Fix it up.

We really want to call there. The chip might have changed since the
irq was setup initially. So let the core code and the chip decide what
to do. The status is just an unreliable snapshot.

Signed-off-by: Thomas Gleixner 
Cc: Sebastian Andrzej Siewior