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, Tested-by and Acked-by's received from v5/v6/v7
in this patchset, earlier versions of this patchset (v3) have been tested-by:
Thierry Reding <thierry.red...@avionic-design.de>
Jingoo Han <jg1....@samsung.com>
I've tested that this patchset builds and runs on ARM and that it builds on
PowerPC, x86_64 and MIPS.
Compared to the v7 sent by Andrew Murray, the following changes have been made
(please note that the first patch is unchanged from v7):
* Rename of_pci_range_parser to of_pci_range_parser_init and
of_pci_process_ranges to of_pci_range_parser_one as suggested by Grant
Likely.
* Reverted back to using a switch statement instead of if/else in
pci_process_bridge_OF_ranges. Grant Likely highlighted this change from
the original code which was unnecessary.
* Squashed in a patch provided by Gabor Juhos which fixes build errors on
MIPS found in the last patchset.
Compared to the v6 sent by Andrew Murray, the following changes have
been made in response to build errors/warnings:
* Inclusion of linux/of_address.h in of_pci.c as suggested by Michal
Simek to prevent compilation failures on Microblaze (and others) and his
ack.
* Use of externs, static inlines and a typo in linux/of_address.h in response
to linker errors (multiple defination) on x86_64 as spotted by a kbuild test
robot on (jcooper/linux.git mvebu/drivers)
* Add EXPORT_SYMBOL_GPL to of_pci_range_parser function to be consistent
with of_pci_process_ranges function
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 | 51 +++-----
arch/powerpc/include/asm/pci-bridge.h | 5 +-
arch/powerpc/kernel/pci-common.c | 192 ------------------------------
drivers/of/address.c | 67 +++++++++++
drivers/of/of_pci.c | 173 +++++++++++++++++++++++++++
include/linux/of_address.h | 48 ++++++++
include/linux/of_pci.h | 4 +
9 files changed, 313 insertions(+), 424 deletions(-)
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