blob: 46d15b7b8d132057b1b86f8668a8afaca1c1a5d9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
/* SPDX-License-Identifier: GPL-2.0-only */
#define ROOT_BRIDGE(acpi_name) \
Device(acpi_name) { \
Name(_HID, EISAID("PNP0A08")) /* PCI Express Root Bridge */ \
Name(_CID, EISAID("PNP0A03")) /* PCI Root Bridge */ \
Method (_OSC, 4, NotSerialized) { \
/* Check for proper PCI/PCIe UUID */ \
If (Arg0 == ToUUID("33DB4D5B-1FF7-401C-9657-7441C03DD766")) \
{ \
/* Let OS control everything */ \
Return(Arg3) \
} Else { \
CreateDWordField(Arg3, 0, CDW1) \
CDW1 = CDW1 | 4 /* Unrecognized UUID, so set bit 2 to 1 */ \
Return(Arg3) \
} \
} \
}
|
