diff options
| -rw-r--r-- | src/soc/intel/tigerlake/acpi/tcss.asl | 66 |
1 files changed, 41 insertions, 25 deletions
diff --git a/src/soc/intel/tigerlake/acpi/tcss.asl b/src/soc/intel/tigerlake/acpi/tcss.asl index 3f51ecc8c1..3312b597b5 100644 --- a/src/soc/intel/tigerlake/acpi/tcss.asl +++ b/src/soc/intel/tigerlake/acpi/tcss.asl @@ -139,38 +139,54 @@ Scope (\_SB) Method (_OSC, 4, Serialized) { - /* - * Operating System Capabilities for USB4 - * Arg0: UUID = {23A0D13A-26AB-486C-9C5F-0FFA525A575A} - * Arg1: Revision ID = 1 - * Arg2: Count of entries (DWORD) in Arg3 (Integer): 3 - * Arg3: DWORD capabilities buffer: - * First DWORD: The standard definition bits are used to return errors. - * Second DWORD: OSPM support field for USB4, bits [31:0] reserved. - * Third DWORD: OSPM control field for USB4. - * bit 0: USB tunneling - * bit 1: DisplayPort tunneling - * bit 2: PCIe tunneling - * bit 3: Inter-domain USB4 internet protocol - * bit 31:4: reserved - * Return: The platform acknowledges the capabilities buffer by returning - * a buffer of DWORD of the same length. Masked/Cleared bits in the - * control field indicate that the platform does not permit OSPM - * control of the respectively capabilities or features. - */ - Name (CTRL, 0) /* Control field value */ CreateDWordField (Arg3, 0, CDW1) - If (Arg0 == ToUUID("23A0D13A-26AB-486C-9C5F-0FFA525A575A")) { - CreateDWordField (Arg3, 2, CDW3) - CTRL = CDW3 + If (Arg0 == ToUUID("0811B06E-4A27-44F9-8D60-3CBBC22E7B48")) { + /* Platform-Wide _OSC Capabilities + * Arg0: UUID = {0811B06E-4A27-44F9-8D60-3CBBC22E7B48} + * Arg1: Revision ID = 1 + * Arg2: Count of entries (DWORD) in Arge3 (Integer): 3 + * Arg3: DWORD capabilities buffer: + * First DWORD: The standard definition bits are used to return errors. + * Second DWORD: See ACPI specification Platform-Wide _OSC Capabilities + * DWORD2 table for Bits 0-17. Bit 18 is newly defined as native USB4 + * support. The OS sets this bit to indicate support for an OSPM-native + * USB4 Connection Manager which handles USB4 connection events and + * link management. + */ + If (Arg1 != REVISION_ID) { + CDW1 |= UNRECOGNIZED_REVISION + } + Return (Arg3) + } ElseIf (Arg0 == ToUUID("23A0D13A-26AB-486C-9C5F-0FFA525A575A")) { + /* + * Operating System Capabilities for USB4 + * Arg0: UUID = {23A0D13A-26AB-486C-9C5F-0FFA525A575A} + * Arg1: Revision ID = 1 + * Arg2: Count of entries (DWORD) in Arg3 (Integer): 3 + * Arg3: DWORD capabilities buffer: + * First DWORD: The standard definition bits are used to return errors. + * Second DWORD: OSPM support field for USB4, bits [31:0] reserved. + * Third DWORD: OSPM control field for USB4. + * bit 0: USB tunneling + * bit 1: DisplayPort tunneling + * bit 2: PCIe tunneling + * bit 3: Inter-domain USB4 internet protocol + * bit 31:4: reserved + * Return: The platform acknowledges the capabilities buffer by + * returning a buffer of DWORD of the same length. Masked/Cleared bits + * in the control field indicate that the platform does not permit OSPM + * control of the respectively capabilities or features. + */ + CreateDWordField (Arg3, 8, CDW3) + Local0 = CDW3 If (Arg1 != REVISION_ID) { CDW1 |= UNRECOGNIZED_REVISION Return (Arg3) } - CTRL |= USB_TUNNELING | DISPLAY_PORT_TUNNELING | PCIE_TUNNELING | + Local0 |= USB_TUNNELING | DISPLAY_PORT_TUNNELING | PCIE_TUNNELING | INTER_DOMAIN_USB4_INTERNET_PROTOCOL - CDW3 = CTRL + CDW3 = Local0 Return (Arg3) } Else { CDW1 |= UNRECOGNIZED_UUID |