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| author | Tomasz Nowicki <tn@semihalf.com> | 2016-06-10 21:55:13 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-06-11 01:27:59 +0200 |
| commit | 935c760ec8101413248da23b6df45f0a7a643c62 (patch) | |
| tree | eb8e54c07bbc7fecebcb7584ba01d9ebf27058cd /drivers/acpi/Kconfig | |
| parent | PCI/ACPI: Support I/O resources when parsing host bridge resources (diff) | |
| download | linux-935c760ec8101413248da23b6df45f0a7a643c62.tar.xz linux-935c760ec8101413248da23b6df45f0a7a643c62.zip | |
PCI/ACPI: Add generic MCFG table handling
On ACPI systems that support memory-mapped config space access, i.e., ECAM,
the PCI Firmware Specification says the OS can learn where the ECAM space
is from either:
- the static MCFG table (for non-hotpluggable bridges), or
- the _CBA method (for hotpluggable bridges)
The current MCFG table handling code cannot be easily generalized owing to
x86-specific quirks, which makes it hard to reuse on other architectures.
Implement generic MCFG handling from scratch, including:
- Simple MCFG table parsing (via pci_mmcfg_late_init() as in current x86)
- MCFG region lookup for a (domain, bus_start, bus_end) tuple
[bhelgaas: changelog]
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Diffstat (limited to 'drivers/acpi/Kconfig')
| -rw-r--r-- | drivers/acpi/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index b7e2e776397d..f98c3287256e 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -217,6 +217,9 @@ config ACPI_PROCESSOR_IDLE bool select CPU_IDLE +config ACPI_MCFG + bool + config ACPI_CPPC_LIB bool depends on ACPI_PROCESSOR |