diff options
| author | Aaron Lu <aaron.lu@intel.com> | 2015-03-25 09:31:41 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-04-08 22:39:30 +0300 |
| commit | 18e94a3384368340d438cf67fcaebd72084f34f8 (patch) | |
| tree | a23e29fde7ad6f0429562adbb7bdb6f07d37c630 /drivers/pci/pci-acpi.c | |
| parent | c89ac4433030fa95a453b14857358cc6ec2e30db (diff) | |
| download | linux-18e94a3384368340d438cf67fcaebd72084f34f8.tar.xz | |
PCI: Make a shareable UUID for PCI firmware ACPI _DSM
The PCI Firmware Specification, r3.0, sec 4.6.4.1.3, defines a single UUID
for an ACPI _DSM method to provide device-specific control functions. This
_DSM method support several functions, including PCI Express Slot
Information, PCI Express Slot Number, PCI Bus Capabilities, etc.
Move the UUID definition from pci/pci-label.c, where it could be used only
for one function, to pci/pci-acpi.c where it can be shared for all these
functions.
[bhelgaas: changelog]
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/pci/pci-acpi.c')
| -rw-r--r-- | drivers/pci/pci-acpi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 489063987325..bea6be4992c3 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -18,6 +18,15 @@ #include <linux/pm_qos.h> #include "pci.h" +/* + * The UUID is defined in the PCI Firmware Specification available here: + * https://www.pcisig.com/members/downloads/pcifw_r3_1_13Dec10.pdf + */ +const u8 pci_acpi_dsm_uuid[] = { + 0xd0, 0x37, 0xc9, 0xe5, 0x53, 0x35, 0x7a, 0x4d, + 0x91, 0x17, 0xea, 0x4d, 0x19, 0xc3, 0x43, 0x4d +}; + phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle) { acpi_status status = AE_NOT_EXIST; |