Hi Tomasz,
On 2016/1/13 21:21, Tomasz Nowicki wrote:
Because of two patch series:
- Jiang Liu's common interface to support PCI host controller init
- MMCONFIG refactoring (part of this patch set)
now we can think about generic ACPI based PCI host controller init implementation out of arch/ directory.
These calls use information from MCFG table (PCI config space regions) and _CRS method (IO/irq resources) to initialize PCI hostbridge.
TBD: We are still not sure whether we should reassign resources after PCI bus enumeration or trust firmware to do all that work for us properly.
Signed-off-by: Tomasz Nowicki tn@semihalf.com Signed-off-by: Hanjun Guo hanjun.guo@linaro.org Signed-off-by: Suravee Suthikulpanit Suravee.Suthikulpanit@amd.com CC: Arnd Bergmann arnd@arndb.de CC: Catalin Marinas catalin.marinas@arm.com CC: Liviu Dudau Liviu.Dudau@arm.com CC: Lorenzo Pieralisi Lorenzo.Pieralisi@arm.com CC: Will Deacon will.deacon@arm.com Tested-by: Suravee Suthikulpanit Suravee.Suthikulpanit@amd.com Tested-by: Jeremy Linton jeremy.linton@arm.com
drivers/acpi/Kconfig | 5 ++ drivers/acpi/pci_root.c | 131 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 136 insertions(+)
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index c3664be..e315061 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -335,6 +335,11 @@ config ACPI_PCI_SLOT i.e., segment/bus/device/function tuples, with physical slots in the system. If you are unsure, say N.
+config ACPI_PCI_HOST_GENERIC
- bool "Generic ACPI PCI host controller"
- help
Say Y here if you want to support generic ACPI PCI host controller.
Since x86 and IA64 will not use ACPI_PCI_HOST_GENERIC in this patch, it should be defined as
config ACPI_PCI_HOST_GENERIC bool
and select for ARCHs, or will default y on x86 and IA64 too.
Compiling the kernel on a IA64 machine, will send out the result when it's ready.
Thanks Hanjun