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Author SHA1 Message Date
Thomas Gleixner f5dbdd429f tile/pci_gx: Prepare trio_handle_level_irq for irq argument removal 
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

Search and update was done with coccinelle and the invaluable help of
Julia Lawall.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
 2015-08-01 08:07:22 +02:00
Thomas Gleixner 625b86ad26 m68k/irq: Prepare irq handlers for irq argument removal 
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

Search and update was done with coccinelle and the invaluable help of
Julia Lawall.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
 2015-08-01 08:07:22 +02:00
Thomas Gleixner 88bd64628f C6X/megamode-pic: Prepare megamod_irq_cascade for irq argument removal 
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

Search and update was done with coccinelle and the invaluable help of
Julia Lawall.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Mark Salter <msalter@redhat.com>
Cc: linux-c6x-dev@linux-c6x.org
 2015-07-31 22:20:05 +02:00
Thomas Gleixner 2b501769c4 blackfin: Prepare irq handlers for irq argument removal 
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

Search and update was done with coccinelle and the invaluable help of
Julia Lawall.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Steven Miao <realmz6@gmail.com>
Cc: adi-buildroot-devel@lists.sourceforge.net
 2015-07-31 22:20:05 +02:00
Thomas Gleixner badae6bc94 arc/irq: Prepare idu_cascade_isr for irq argument removal 
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

Search and update was done with coccinelle and the invaluable help of
Julia Lawall.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Vineet Gupta <vgupta@synopsys.com>
 2015-07-31 22:20:05 +02:00
Jiang Liu d7185a98d5 sparc/irq: Use access helper irq_data_get_affinity_mask() 
This is a preparatory patch for moving irq_data struct members.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/1433145945-789-27-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 22:20:05 +02:00
Jiang Liu 6a4a5b34c3 sparc/irq: Use helper irq_data_get_irq_handler_data() 
Use helper function irq_data_get_irq_handler_data() to hide irq_desc
implementation details. This allows to move irq_data->handler_data to
irq_data_common, once all usage sites are converted.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/1433145945-789-9-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 22:20:05 +02:00
Jiang Liu d2109a1219 parisc/irq: Use access helper irq_data_get_affinity_mask() 
Use access helper irq_data_get_affinity_mask() to hide implementation
details of struct irq_desc.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Link: http://lkml.kernel.org/r/1433145945-789-24-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 22:20:04 +02:00
Jiang Liu 9d03e784bc mn10300/irq: Use access helper irq_data_get_affinity_mask() 
Use access helper irq_data_get_affinity_mask() to hide implementation
details of struct irq_desc.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-am33-list@redhat.com
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Link: http://lkml.kernel.org/r/1433145945-789-23-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 22:20:04 +02:00
Thomas Gleixner 4ba375016f irqchip/i8259: Prepare i8259_irq_dispatch for irq argument removal 
Make irq a local variable and retrieve domain from the irq descriptor
which avoid a redundant lookup.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
 2015-07-31 22:20:04 +02:00
Ralf Baechle 0509cfde03 MIPS/irqchip: Move i8259 irqchip driver to drivers/irqchip 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 22:04:49 +02:00
Joel Porquet 0b73670170 irqchip: Remove header drivers/irqchip/irqchip.h 
All drivers using the macro IRQCHIP_DECLARE have been converted to using global
header include/linux/irqchip.h. Local header drivers/irqchip/irqchip.h is now
useless and can be removed.

Signed-off-by: Joel Porquet <joel@porquet.org>
Cc: vgupta@synopsys.com
Cc: monstr@monstr.eu
Cc: ralf@linux-mips.org
Cc: jason@lakedaemon.net
Link: http://lkml.kernel.org/r/2818400.nekF4hg2Ig@joel-zenbook
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 20:51:22 +02:00
Joel Porquet 0a271c2a34 mips/irq: prepare for drivers/irqchip/irqchip.h removal 
The IRQCHIP_DECLARE macro migrated to 'include/linux/irqchip.h'.

See commit 91e20b5040
("irqchip: Move IRQCHIP_DECLARE macro to include/linux/irqchip.h").

This patch removes inclusions of private header 'drivers/irqchip/irqchip.h'and
replaces them with the inclusion of 'include/linux/irqchip.h'.

Signed-off-by: Joel Porquet <joel@porquet.org>
Cc: vgupta@synopsys.com
Cc: monstr@monstr.eu
Cc: ralf@linux-mips.org
Cc: jason@lakedaemon.net
Link: http://lkml.kernel.org/r/3357968.0IznKtY3Q9@joel-zenbook
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 20:51:21 +02:00
Joel Porquet fd4b267b3d microblaze/irq: prepare for drivers/irqchip/irqchip.h removal 
The IRQCHIP_DECLARE macro migrated to 'include/linux/irqchip.h'.

See commit 91e20b5040
("irqchip: Move IRQCHIP_DECLARE macro to include/linux/irqchip.h").

This patch removes the inclusion of private header 'drivers/irqchip/irqchip.h'
and replaces it with the inclusion of 'include/linux/irqchip.h'.

Signed-off-by: Joel Porquet <joel@porquet.org>
Cc: vgupta@synopsys.com
Cc: monstr@monstr.eu
Cc: ralf@linux-mips.org
Cc: jason@lakedaemon.net
Link: http://lkml.kernel.org/r/12384045.pHnZrl3CFY@joel-zenbook
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-31 20:51:21 +02:00
Marc Zyngier f075915ac0 PCI/MSI: Drop domain field from msi_controller 
The only three users of that field are not using the msi_controller
structure anymore, so drop it altogether.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-20-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:39 +02:00
Marc Zyngier 8d63bc7bea PCI/MSI: pci-xgene-msi: Get rid of struct msi_controller 
The X-Gene MSI driver only uses the msi_controller structure as
a way to match the host bridge  with its MSI HW, and thus the
msi_domain.

But now that we can directly associate an msi_domain with a device,
there is no use keeping this msi_controller around.

Just remove all traces of msi_controller from the driver.

Tested-by: Duc Dang <dhdang@apm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-19-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:39 +02:00
Marc Zyngier ef50645aa3 irqchip/GICv2m: Add platform MSI support 
In order to support non-PCI MSI with GICv2m, add the minimal
required entry points for the MSI domain, which is actually almost
nothing (we just use the defaults provided by the core code).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-18-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:39 +02:00
Marc Zyngier 5cedceb37c irqchip/GICv2m: Get rid of struct msi_controller 
GICv2m only uses the msi_controller structure as a way to match
the host bridge with its MSI HW, and thus the msi_domain.

But now that we can directly associate an msi_domain with a device,
there is no use keeping this msi_controller around.

Just remove all traces of msi_controller from the driver. Also
tag the inner (non-PCI) domain with DOMAIN_BUS_NEXUS.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-17-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:39 +02:00
Marc Zyngier 1e6db00048 irqchip/gicv3-its: Add platform MSI support 
In order to support non-PCI MSI with the GICv3 ITS, add the minimal
required entry points for the MSI domain (an msi_prepare implementation).

The rest is only boilerplate code to find the raw ITS domain.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-16-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:38 +02:00
Marc Zyngier 54456db9a2 irqchip/gicv3-its: Make the PCI/MSI code standalone 
We can now lookup the base ITS domain, making it possible to
initialize the PCI/MSI code independently from the main ITS
subsystem.

This allows us to remove all the previously add hooks.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-15-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:38 +02:00
Marc Zyngier 841514ab41 irqchip/gicv3-its: Get rid of struct msi_controller 
The GICv3 ITS only uses the msi_controller structure as a way
to match the host bridge with its MSI HW, and thus the msi_domain.
But now that we can directly associate an msi_domain with a device,
there is no use keeping this msi_controller around.

Just remove all traces of msi_controller from the driver.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-14-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:38 +02:00
Marc Zyngier e55dcd4d8b irqchip/gicv3-its: Register irq domain with NEXUS token 
Now that we can distinguish between multiple domains carrying the
same device_node, tag the raw ITS domain with DOMAIN_BUS_NEXUS.
This will allow MSI providers built on top of the raw ITS domain
to identify it.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-13-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:38 +02:00
Marc Zyngier f130420e51 irqchip/gicv3-its: Split PCI/MSI code from the core ITS driver 
It is becoming obvious that having the PCI/MSI code in the same
file as the the core ITS code is giving people implementing non-PCI
MSI support the wrong kind of idea.

In order to make things a bit clearer, let's move the PCI/MSI code
out to its own file. Hopefully it will make it clear that whoever
thinks of hooking into the core ITS better have a very strong point.

We use a temporary entry point that will get removed in a subsequent
patch, once the proper infrastructure is added.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-12-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:38 +02:00
Marc Zyngier a5716070d8 genirq: Add DOMAIN_BUS_NEXUS irqdomain property 
Some IRQ domains are not designed to directly provide interrupts
to devices, but strictly to be used by other domains. An example
of this is the GICv3 ITS, which is completely bus agnostic, and
on which it is possible to implement a PCI/MSI domain.

Just introduce the irq_domain_bus_token property for now.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-11-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:38 +02:00
Marc Zyngier c09fcc4b2b drivers/base: Add MSI domain support for non-PCI devices 
With the msi_list and the msi_domain properties now being at the
generic device level, it is starting to be relatively easy to offer
a generic way of providing non-PCI MSIs.

The two major hurdles with this idea are:

- Lack of global ID that identifies a device: this is worked around by
  having a global ID allocator for each device that gets enrolled in
  the platform MSI subsystem

- Lack of standard way to write the message in the generating device.
  This is solved by mandating driver code to provide a write_msg
  callback, so that everyone can have their own square wheel

Apart from that, the API is fairly straightforward:

- platform_msi_create_irq_domain creates an MSI domain that gets
  tagged with DOMAIN_BUS_PLATFORM_MSI

- platform_msi_domain_alloc_irqs allocate MSIs for a given device,
  populating the msi_list

- platform_msi_domain_free_irqs does what is written on the tin

[ tglx: Created a seperate struct platform_msi_desc and added
  	kerneldoc entries ]

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-10-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-30 00:14:38 +02:00