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authorAaron Lu <aaron.lu@intel.com>2015-03-25 14:31:41 +0800
committerBjorn Helgaas <bhelgaas@google.com>2015-04-08 14:39:30 -0500
commit18e94a3384368340d438cf67fcaebd72084f34f8 (patch)
treea23e29fde7ad6f0429562adbb7bdb6f07d37c630 /drivers/pci/pci-acpi.c
parentc89ac4433030fa95a453b14857358cc6ec2e30db (diff)
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.c9
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;