This series moves all architectures to a uniform way of indicating that we
shouldn't touch PCI resource assignments done by firmware. Previously, we had
a mix of using the PCI_PROBE_ONLY bit in pci_flags or arch-specific variables
like "pci_probe_only" or "use_firmware." This moves everybody to using the
PCI_PROBE_ONLY bit.
I want to do this to make it easier to move some resource assignment
functionality into the PCI core, while still allowing the architectures
to prevent resource changes.
The core has a very complicated interface for scanning buses and assigning
resources to devices, including these and probably other functions:
pci_create_root_bus
pci_scan_root_bus
pci_add_new_bus
pci_scan_bus
pci_scan_slot
pci_scan_child_bus
pci_bus_size_bridges
pci_bus_assign_resources
pci_assign_unassigned_bridge_resources
pci_claim_resource
pci_enable_bridges
pci_bus_add_devices
When you look at all the users of these interfaces (mostly architecture code
and hotplug drivers) and how many things are similar but not quite the same,
it's amazing that things work at all. I think we'll be better off if we
can make some of this functionality internal to the core and simplify the
external interface.
These patches are also available in this git repo:
git://github.com/bjorn-helgaas/linux.git pci-probe-only-v2-9c310d6
Or you can browse them here:
https://github.com/bjorn-helgaas/linux/compare/master...pci-probe-only-v2-9c310d6
Changes since v1:
- Incorporate Ben H's patch to change ppc64 pci_probe_only default to 0
---
Bjorn Helgaas (12):
PCI: make pci_flags always available
PCI: add pci_clear_flags()
alpha/PCI: replace pci_probe_only with pci_flags
arm/PCI: remove arch pci_flags definition
arm/PCI: use pci_flags PCI_PROBE_ONLY instead of arm-specific flag
microblaze/PCI: remove unused pci_flags
mips/PCI: replace pci_probe_only with pci_flags
mips/PCI: removed unused pci_probe configurability
powerpc/PCI: make pci_probe_only default to 0
powerpc/PCI: replace pci_probe_only with pci_flags
unicore32/PCI: use pci_flags PCI_PROBE_ONLY instead of arm-specific flag
PCI: make pci_flags non-weak
arch/alpha/include/asm/pci.h | 1 +
arch/alpha/kernel/pci.c | 15 ++++-----
arch/alpha/kernel/pci_impl.h | 3 --
arch/alpha/kernel/sys_marvel.c | 3 +-
arch/alpha/kernel/sys_titan.c | 3 +-
arch/arm/kernel/bios32.c | 7 ++--
arch/arm/mm/iomap.c | 3 --
arch/microblaze/include/asm/pci-bridge.h | 1 -
arch/microblaze/pci/pci-common.c | 48 +++++------------------------
arch/mips/include/asm/pci.h | 3 +-
arch/mips/pci/pci-bcm1480.c | 2 +
arch/mips/pci/pci-ip27.c | 2 +
arch/mips/pci/pci-lantiq.c | 3 +-
arch/mips/pci/pci-sb1250.c | 2 +
arch/mips/pci/pci-xlr.c | 2 +
arch/mips/pci/pci.c | 19 ++++-------
arch/powerpc/include/asm/ppc-pci.h | 2 -
arch/powerpc/kernel/pci-common.c | 3 --
arch/powerpc/kernel/pci_64.c | 5 ---
arch/powerpc/kernel/rtas_pci.c | 10 ++++--
arch/powerpc/platforms/iseries/pci.c | 2 +
arch/powerpc/platforms/maple/pci.c | 2 +
arch/powerpc/platforms/pasemi/pci.c | 2 +
arch/powerpc/platforms/powermac/pci.c | 3 --
arch/powerpc/platforms/powernv/pci-ioda.c | 5 +--
arch/powerpc/platforms/powernv/pci.c | 5 +--
arch/powerpc/platforms/pseries/setup.c | 3 ++
arch/powerpc/platforms/wsp/wsp_pci.c | 1 -
arch/unicore32/kernel/pci.c | 6 ++--
drivers/pci/setup-bus.c | 3 ++
include/asm-generic/pci-bridge.h | 6 ++++
31 files changed, 66 insertions(+), 109 deletions(-)
--
Bjorn
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