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| author | Myron Stowe | 2010-10-21 22:23:59 +0200 |
|---|---|---|
| committer | Len Brown | 2010-10-25 05:26:23 +0200 |
| commit | 29718521237a1b1607ea05b49243100ea2044337 (patch) | |
| tree | 69608fa74248415a6055f0b48753cf54b63043b3 /include/linux/acpi.h | |
| parent | ACPI: Maintain a list of ACPI memory mapped I/O remappings (diff) | |
| download | kernel-qcow2-linux-29718521237a1b1607ea05b49243100ea2044337.tar.gz kernel-qcow2-linux-29718521237a1b1607ea05b49243100ea2044337.tar.xz kernel-qcow2-linux-29718521237a1b1607ea05b49243100ea2044337.zip | |
ACPI: Add interfaces for ioremapping/iounmapping ACPI registers
Add remapping and unmapping interfaces for ACPI registers that are
backed by memory mapped I/O (MMIO). These interfaces, along with
the MMIO remapping list, enable accesses of such registers from within
interrupt context.
ACPI Generic Address Structure (GAS) reference (ACPI's fixed/generic
hardware registers use the GAS format):
ACPI Specification, Revision 4.0, Section 5.2.3.1, "Generic Address
Structure".
Signed-off-by: Myron Stowe <myron.stowe@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index c227757feb06..7774e6d8fddd 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -308,6 +308,9 @@ extern acpi_status acpi_pci_osc_control_set(acpi_handle handle, u32 *mask, u32 req); extern void acpi_early_init(void); +int acpi_os_map_generic_address(struct acpi_generic_address *addr); +void acpi_os_unmap_generic_address(struct acpi_generic_address *addr); + #else /* !CONFIG_ACPI */ #define acpi_disabled 1 |