Hi,
This patch adds support for PCIe to AArch64. It depends on my v10 patch
that adds support for creating generic host bridge resources from device
trees. With that in place, I was able to boot a platform that
has PCIe host bridge support and use a PCIe network card.
Changes from v9:
- Moved the pcibios_add_device() patch that parses the IRQ number from DT into here.
- Moved the arm64-specific redefine of pgprot_device here from the generic patchset.
- Readability fix for definition of IO_SPACE_LIMIT
Changes from v8:
- Added support for generic PCI domains
Changes from v7:
- Rebased to v3.16-rc3
- Removed pci_ioremap_io() function as it is provided by my v8 generic
PCI host bridge patches under a different name.
Changes from v6:
- Guard the pci_domain_nr() inline implementation with #ifdef CONFIG_PCI as
to avoid conflict with default empty version present in include/linux/pci.h.
Thanks to Jingoo Han for catching this.
Changes from v5:
- Removed pcibios_fixup_bridge_ranges() as the week default version is fine.
- Removed the ALIGN() call in pcibios_align_resource()
- Stopped exporting pcibios_align_resource()
Changes from v4:
- Fixed the pci_domain_nr() implementation for arm64. Now we use
find_pci_host_bride() to find the host bridge before we retrieve
the domain number.
Changes from v3:
- Added Acks accumulated so far ;)
- Still carrying Catalin's patch for moving the PCI_IO_BASE until it
lands in linux-next or mainline, in order to ease applying the series
Changes from v2:
- Implement an arch specific version of pci_register_io_range() and
pci_address_to_pio().
- Return 1 from pci_proc_domain().
Changes from v1:
- Added Catalin's patch for moving the PCI_IO_BASE location and extend
its size to 16MB
- Integrated Arnd's version of pci_ioremap_io that uses a bitmap for
keeping track of assigned IO space and returns an io_offset. At the
moment the code is added in arch/arm64 but it can be moved in drivers/pci.
- Added a fix for the generic ioport_map() function when !CONFIG_GENERIC_IOMAP
as suggested by Arnd.
v9 thread here: https://lkml.org/lkml/2014/8/12/394
v8 thread here: https://lkml.org/lkml/2014/7/1/705
v7 thread here: https://lkml.org/lkml/2014/3/14/320
v6 thread here: https://lkml.org/lkml/2014/3/5/41
v5 thread here: https://lkml.org/lkml/2014/3/4/307
v4 thread here: https://lkml.org/lkml/2014/3/3/298
v3 thread here: https://lkml.org/lkml/2014/2/28/211
v2 thread here: https://lkml.org/lkml/2014/2/27/255
v1 thread here: https://lkml.org/lkml/2014/2/3/389
Best regards,
Liviu
Liviu Dudau (1):
arm64: Add architectural support for PCIe
arch/arm64/Kconfig | 22 ++++++++++++++-
arch/arm64/include/asm/Kbuild | 1 +
arch/arm64/include/asm/io.h | 3 +-
arch/arm64/include/asm/pci.h | 37 +++++++++++++++++++++++++
arch/arm64/include/asm/pgtable.h | 2 ++
arch/arm64/kernel/Makefile | 1 +
arch/arm64/kernel/pci.c | 59 ++++++++++++++++++++++++++++++++++++++++
7 files changed, 123 insertions(+), 2 deletions(-)
create mode 100644 arch/arm64/include/asm/pci.h
create mode 100644 arch/arm64/kernel/pci.c
--
2.0.4
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