This patchset factors out duplicated code associated with parsing PCI
DT "ranges" properties across the architectures and introduces a
"ranges" parser. This parser "of_pci_range_parser" can be used directly
by ARM host bridge drivers enabling them to obtain ranges from device
trees.
I've included the Reviewed-by and Tested-by's received from v5 in this
patchset, earlier versions of this patchset (v3) have been tested-by:
Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
Jingoo Han <jg1.han@xxxxxxxxxxx>
I believe a version of this patchset has also been tested through its
inclusion in Thomas Petazzoni's Armada 370 and Armada XP SoCs PCIe support by:
Linus Walleij <linus.walleij@xxxxxxxxxx>
I've tested that this patchset builds and runs on ARM and that it builds on
PowerPC.
Compared to the v5 sent by Andrew Murray, the following changes have
been made:
* Use of CONFIG_64BIT instead of CONFIG_[a32bitarch] as suggested by
Rob Herring in drivers/of/of_pci.c
* Added forward declaration of struct pci_controller in linux/of_pci.h
to prevent compiler warning as suggested by Thomas Petazzoni
* Improved error checking (!range check), removal of unnecessary be32_to_cpup
call, improved formatting of struct of_pci_range_parser layout and
replacement of macro with a static inline. All suggested by Rob Herring.
Compared to the v4 (incorrectly labelled v3) sent by Andrew Murray,
the following changes have been made:
* Split the patch as suggested by Rob Herring
Compared to the v3 sent by Andrew Murray, the following changes have
been made:
* Unify and move duplicate pci_process_bridge_OF_ranges functions to
drivers/of/of_pci.c as suggested by Rob Herring
* Fix potential build errors with Microblaze/MIPS
Compared to "[PATCH v5 01/17] of/pci: Provide support for parsing PCI DT
ranges property", the following changes have been made:
* Correct use of IORESOURCE_* as suggested by Russell King
* Improved interface and naming as suggested by Thierry Reding
Compared to the v2 sent by Andrew Murray, Thomas Petazzoni did:
* Add a memset() on the struct of_pci_range_iter when starting the
for loop in for_each_pci_range(). Otherwise, with an uninitialized
of_pci_range_iter, of_pci_process_ranges() may crash.
* Add parenthesis around 'res', 'np' and 'iter' in the
for_each_of_pci_range macro definitions. Otherwise, passing
something like &foobar as 'res' didn't work.
* Rebased on top of 3.9-rc2, which required fixing a few conflicts in
the Microblaze code.
v2:
This follows on from suggestions made by Grant Likely
(marc.info/?l=linux-kernel&m=136079602806328)
Andrew Murray (3):
of/pci: Unify pci_process_bridge_OF_ranges from Microblaze and
PowerPC
of/pci: Provide support for parsing PCI DT ranges property
of/pci: mips: convert to common of_pci_range_parser
arch/microblaze/include/asm/pci-bridge.h | 5 +-
arch/microblaze/pci/pci-common.c | 192 ------------------------------
arch/mips/pci/pci.c | 50 +++------
arch/powerpc/include/asm/pci-bridge.h | 5 +-
arch/powerpc/kernel/pci-common.c | 192 ------------------------------
drivers/of/address.c | 66 ++++++++++
drivers/of/of_pci.c | 168 ++++++++++++++++++++++++++
include/linux/of_address.h | 46 +++++++
include/linux/of_pci.h | 4 +
9 files changed, 302 insertions(+), 426 deletions(-)
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