Re: [PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-16 Thread Thomas Gleixner
On Wed, 15 Jul 2015, David Daney wrote:

> From: David Daney 
> 
> The subject pretty much says it all.  The first four patches tweak the
> infrastructure a little so that we can get required behavior.  The

Just that you avoid to describe what the required behaviour is.

Can you please provide a proper description how this looks like from
the HW side and how you want to map that into software?

Thanks,

tglx

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-16 Thread Thomas Gleixner
On Wed, 15 Jul 2015, David Daney wrote:

 From: David Daney david.da...@cavium.com
 
 The subject pretty much says it all.  The first four patches tweak the
 infrastructure a little so that we can get required behavior.  The

Just that you avoid to describe what the required behaviour is.

Can you please provide a proper description how this looks like from
the HW side and how you want to map that into software?

Thanks,

tglx

--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-15 Thread Will Deacon
On Wed, Jul 15, 2015 at 06:07:01PM +0100, Mark Rutland wrote:
> On Wed, Jul 15, 2015 at 05:54:40PM +0100, David Daney wrote:
> > From: David Daney 
> > 
> > The subject pretty much says it all.  The first four patches tweak the
> > infrastructure a little so that we can get required behavior.  The
> > final patch adds the drivers.
> > 
> > David Daney (5):
> >   pci: Add is_pcierc element to struct pci_bus
> >   gic-its: Allow pci_requester_id to be overridden.
> >   arm64, pci: Allow RC drivers to supply pcibios_add_device()
> > implementation.
> >   irqchip: gic-v3: Add gic_get_irq_domain() to get the irqdomain of the
> > GIC.
> >   PCI: Add host drivers for Cavium ThunderX processors.
> > 
> >  arch/arm64/include/asm/pci.h|   3 +
> >  arch/arm64/kernel/pci.c |  10 +
> >  drivers/irqchip/irq-gic-v3-its.c|  14 +-
> >  drivers/irqchip/irq-gic-v3.c|   5 +
> >  drivers/pci/host/Kconfig|  12 +
> >  drivers/pci/host/Makefile   |   2 +
> >  drivers/pci/host/pcie-thunder-pem.c | 462 
> > 
> >  drivers/pci/host/pcie-thunder.c | 422 
> >  drivers/pci/probe.c |   2 +
> >  include/linux/irqchip/arm-gic-v3.h  |   3 +
> >  include/linux/pci.h |   1 +
> >  11 files changed, 935 insertions(+), 1 deletion(-)
> 
> I note that the driver attempts to probe with DT, yet there is no DT
> binding in this patch, nor has the devicetree mailing list been placed
> on Cc.
> 
> A DT binding document is mandatory for anything probing via DT.
> 
> Please write one, and submit it (as its own patch) with the next version
> of this series as per
> Documentation/devicetree/bindings/submitting-patches.txt.

Furthermore, the RequesterID -> DeviceID transformation should be described
in device-tree as an offset on each PCI host controller node, rather than
computed dynamically by picking apart the (software-assigned) PCI domain
ID.

For ACPI, IORT should be used.

Will
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-15 Thread Mark Rutland
Hi,

On Wed, Jul 15, 2015 at 05:54:40PM +0100, David Daney wrote:
> From: David Daney 
> 
> The subject pretty much says it all.  The first four patches tweak the
> infrastructure a little so that we can get required behavior.  The
> final patch adds the drivers.
> 
> David Daney (5):
>   pci: Add is_pcierc element to struct pci_bus
>   gic-its: Allow pci_requester_id to be overridden.
>   arm64, pci: Allow RC drivers to supply pcibios_add_device()
> implementation.
>   irqchip: gic-v3: Add gic_get_irq_domain() to get the irqdomain of the
> GIC.
>   PCI: Add host drivers for Cavium ThunderX processors.
> 
>  arch/arm64/include/asm/pci.h|   3 +
>  arch/arm64/kernel/pci.c |  10 +
>  drivers/irqchip/irq-gic-v3-its.c|  14 +-
>  drivers/irqchip/irq-gic-v3.c|   5 +
>  drivers/pci/host/Kconfig|  12 +
>  drivers/pci/host/Makefile   |   2 +
>  drivers/pci/host/pcie-thunder-pem.c | 462 
> 
>  drivers/pci/host/pcie-thunder.c | 422 
>  drivers/pci/probe.c |   2 +
>  include/linux/irqchip/arm-gic-v3.h  |   3 +
>  include/linux/pci.h |   1 +
>  11 files changed, 935 insertions(+), 1 deletion(-)

I note that the driver attempts to probe with DT, yet there is no DT
binding in this patch, nor has the devicetree mailing list been placed
on Cc.

A DT binding document is mandatory for anything probing via DT.

Please write one, and submit it (as its own patch) with the next version
of this series as per
Documentation/devicetree/bindings/submitting-patches.txt.

Thanks,
Mark.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


[PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-15 Thread David Daney
From: David Daney 

The subject pretty much says it all.  The first four patches tweak the
infrastructure a little so that we can get required behavior.  The
final patch adds the drivers.

David Daney (5):
  pci: Add is_pcierc element to struct pci_bus
  gic-its: Allow pci_requester_id to be overridden.
  arm64, pci: Allow RC drivers to supply pcibios_add_device()
implementation.
  irqchip: gic-v3: Add gic_get_irq_domain() to get the irqdomain of the
GIC.
  PCI: Add host drivers for Cavium ThunderX processors.

 arch/arm64/include/asm/pci.h|   3 +
 arch/arm64/kernel/pci.c |  10 +
 drivers/irqchip/irq-gic-v3-its.c|  14 +-
 drivers/irqchip/irq-gic-v3.c|   5 +
 drivers/pci/host/Kconfig|  12 +
 drivers/pci/host/Makefile   |   2 +
 drivers/pci/host/pcie-thunder-pem.c | 462 
 drivers/pci/host/pcie-thunder.c | 422 
 drivers/pci/probe.c |   2 +
 include/linux/irqchip/arm-gic-v3.h  |   3 +
 include/linux/pci.h |   1 +
 11 files changed, 935 insertions(+), 1 deletion(-)
 create mode 100644 drivers/pci/host/pcie-thunder-pem.c
 create mode 100644 drivers/pci/host/pcie-thunder.c

-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


[PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-15 Thread David Daney
From: David Daney david.da...@cavium.com

The subject pretty much says it all.  The first four patches tweak the
infrastructure a little so that we can get required behavior.  The
final patch adds the drivers.

David Daney (5):
  pci: Add is_pcierc element to struct pci_bus
  gic-its: Allow pci_requester_id to be overridden.
  arm64, pci: Allow RC drivers to supply pcibios_add_device()
implementation.
  irqchip: gic-v3: Add gic_get_irq_domain() to get the irqdomain of the
GIC.
  PCI: Add host drivers for Cavium ThunderX processors.

 arch/arm64/include/asm/pci.h|   3 +
 arch/arm64/kernel/pci.c |  10 +
 drivers/irqchip/irq-gic-v3-its.c|  14 +-
 drivers/irqchip/irq-gic-v3.c|   5 +
 drivers/pci/host/Kconfig|  12 +
 drivers/pci/host/Makefile   |   2 +
 drivers/pci/host/pcie-thunder-pem.c | 462 
 drivers/pci/host/pcie-thunder.c | 422 
 drivers/pci/probe.c |   2 +
 include/linux/irqchip/arm-gic-v3.h  |   3 +
 include/linux/pci.h |   1 +
 11 files changed, 935 insertions(+), 1 deletion(-)
 create mode 100644 drivers/pci/host/pcie-thunder-pem.c
 create mode 100644 drivers/pci/host/pcie-thunder.c

-- 
1.9.1

--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-15 Thread Will Deacon
On Wed, Jul 15, 2015 at 06:07:01PM +0100, Mark Rutland wrote:
 On Wed, Jul 15, 2015 at 05:54:40PM +0100, David Daney wrote:
  From: David Daney david.da...@cavium.com
  
  The subject pretty much says it all.  The first four patches tweak the
  infrastructure a little so that we can get required behavior.  The
  final patch adds the drivers.
  
  David Daney (5):
pci: Add is_pcierc element to struct pci_bus
gic-its: Allow pci_requester_id to be overridden.
arm64, pci: Allow RC drivers to supply pcibios_add_device()
  implementation.
irqchip: gic-v3: Add gic_get_irq_domain() to get the irqdomain of the
  GIC.
PCI: Add host drivers for Cavium ThunderX processors.
  
   arch/arm64/include/asm/pci.h|   3 +
   arch/arm64/kernel/pci.c |  10 +
   drivers/irqchip/irq-gic-v3-its.c|  14 +-
   drivers/irqchip/irq-gic-v3.c|   5 +
   drivers/pci/host/Kconfig|  12 +
   drivers/pci/host/Makefile   |   2 +
   drivers/pci/host/pcie-thunder-pem.c | 462 
  
   drivers/pci/host/pcie-thunder.c | 422 
   drivers/pci/probe.c |   2 +
   include/linux/irqchip/arm-gic-v3.h  |   3 +
   include/linux/pci.h |   1 +
   11 files changed, 935 insertions(+), 1 deletion(-)
 
 I note that the driver attempts to probe with DT, yet there is no DT
 binding in this patch, nor has the devicetree mailing list been placed
 on Cc.
 
 A DT binding document is mandatory for anything probing via DT.
 
 Please write one, and submit it (as its own patch) with the next version
 of this series as per
 Documentation/devicetree/bindings/submitting-patches.txt.

Furthermore, the RequesterID - DeviceID transformation should be described
in device-tree as an offset on each PCI host controller node, rather than
computed dynamically by picking apart the (software-assigned) PCI domain
ID.

For ACPI, IORT should be used.

Will
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH 0/5] arm64, pci: Add ECAM/PCIe support for Cavium ThunderX

2015-07-15 Thread Mark Rutland
Hi,

On Wed, Jul 15, 2015 at 05:54:40PM +0100, David Daney wrote:
 From: David Daney david.da...@cavium.com
 
 The subject pretty much says it all.  The first four patches tweak the
 infrastructure a little so that we can get required behavior.  The
 final patch adds the drivers.
 
 David Daney (5):
   pci: Add is_pcierc element to struct pci_bus
   gic-its: Allow pci_requester_id to be overridden.
   arm64, pci: Allow RC drivers to supply pcibios_add_device()
 implementation.
   irqchip: gic-v3: Add gic_get_irq_domain() to get the irqdomain of the
 GIC.
   PCI: Add host drivers for Cavium ThunderX processors.
 
  arch/arm64/include/asm/pci.h|   3 +
  arch/arm64/kernel/pci.c |  10 +
  drivers/irqchip/irq-gic-v3-its.c|  14 +-
  drivers/irqchip/irq-gic-v3.c|   5 +
  drivers/pci/host/Kconfig|  12 +
  drivers/pci/host/Makefile   |   2 +
  drivers/pci/host/pcie-thunder-pem.c | 462 
 
  drivers/pci/host/pcie-thunder.c | 422 
  drivers/pci/probe.c |   2 +
  include/linux/irqchip/arm-gic-v3.h  |   3 +
  include/linux/pci.h |   1 +
  11 files changed, 935 insertions(+), 1 deletion(-)

I note that the driver attempts to probe with DT, yet there is no DT
binding in this patch, nor has the devicetree mailing list been placed
on Cc.

A DT binding document is mandatory for anything probing via DT.

Please write one, and submit it (as its own patch) with the next version
of this series as per
Documentation/devicetree/bindings/submitting-patches.txt.

Thanks,
Mark.
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/