[PATCH v2 0/8] of: Handle multi-parent version of msi-parent & msi-map

Marc Zyngier marc.zyngier at arm.com
Tue Oct 6 10:03:55 PDT 2015

Now that we have a useable and documented version of msi-parent that
can deal with multiple parenting, we can properly handle it in the
kernel. This leads to a new OF helper, some rework in the PCI and
platform layers, as well as a small patch for the ITS driver, which is
the only thing in the kernel requirering this functionality so far.

On top of that, the msi-map property also offers a new feature, which
is that ability to have a per-device MSI controller (instead of having
a global one). The last four patches enable this.

These patches are on top of David Daney's series:


(of_msi_map_rid is a dependency), and has been tested on 4.3-rc3,
using both platform and PCI MSI devices.

* From the initial version
  - Dropped the of parsing patch
  - Built on top of David's series to reuse of_msi_map_rid
  - New per-device PCI/MSI domain assignment hook
  - Parse msi-map at bus probing time and populate the msi_domain field

Marc Zyngier (8):
  of/irq: Add support code for multi-parent version of "msi-parent"
  of/irq: Use of_msi_get_domain instead of open-coded "msi-parent"
  PCI/MSI: Use of_msi_get_domain instead of open-coded "msi-parent"
  irqchip/gic-v3-its: Parse new version of msi-parent property
  of/irq: Split of_msi_map_rid to reuse msi-map lookup
  of/irq: Use the msi-map property to provide device-specific MSI domain
  PCI: Add per-device MSI domain hook
  PCI/MSI: Allow the MSI domain to be device-specific

 drivers/irqchip/irq-gic-v3-its-platform-msi.c |  18 ++-
 drivers/of/irq.c                              | 151 ++++++++++++++++++++------
 drivers/pci/msi.c                             |  17 +++
 drivers/pci/of.c                              |  13 +--
 drivers/pci/probe.c                           |  43 +++++++-
 include/linux/msi.h                           |   6 +
 include/linux/of_irq.h                        |  16 +++
 7 files changed, 214 insertions(+), 50 deletions(-)


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