diff options
Diffstat (limited to 'src/soc/intel/tigerlake/acpi/tcss_dma.asl')
| -rw-r--r-- | src/soc/intel/tigerlake/acpi/tcss_dma.asl | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/acpi/tcss_dma.asl b/src/soc/intel/tigerlake/acpi/tcss_dma.asl new file mode 100644 index 0000000000..a2f86baf09 --- /dev/null +++ b/src/soc/intel/tigerlake/acpi/tcss_dma.asl @@ -0,0 +1,227 @@ +/* + * This file is part of the coreboot project. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +OperationRegion (DPME, SystemMemory, BASE(_ADR), 0x100) +Field (DPME, AnyAcc, NoLock, Preserve) +{ + VDID, 32, + Offset(0x84), /* 0x84, DMA CFG PM CAP */ + PMST, 2, /* 1:0, PM_STATE */ + , 6, + PMEE, 1, /* 8, PME_EN */ + , 6, + PMES, 1, /* 15, PME_STATUS */ + Offset(0xC8), /* 0xC8, TBT NVM FW Revision */ + , 31, + INFR, 1, /* TBT NVM FW Ready */ + Offset(0xEC), /* 0xEC, TBT TO PCIE Register */ + TB2P, 32, /* TBT to PCIe */ + P2TB, 32, /* PCIe to TBT */ + Offset(0xFC), /* 0xFC, DMA RTD3 Force Power */ + DD3E, 1, /* 0:0 DMA RTD3 Enable */ + DFPE, 1, /* 1:1 DMA Force Power */ + , 22, + DMAD, 8 /* 31:24 DMA Active Delay */ +} + +/* + * TBT MailBox Command Method + * Arg0 - MailBox Cmd ID + */ +Method (ITMB, 1, Serialized) +{ + Local0 = Arg0 | 0x1 /* 0x1, PCIE2TBT_VLD_B */ + P2TB = Local0 +} + +/* + * Wait For Command Completed + * Arg0 - TimeOut value (unit is 1 millisecond) + */ +Method (WFCC, 1, Serialized) +{ + WTBS (Arg0) + P2TB = 0 + WTBC (Arg0) +} + +/* + * Wait For Command Set + * Arg0 - TimeOut value + */ +Method (WTBS, 1, Serialized) +{ + Local0 = Arg0 + While (Local0 > 0) { + /* Wait for Bit to Set. */ + If (TB2P & 0x1) { /* 0x1, TBT2PCIE_DON_R */ + Break + } + Local0-- + Sleep (1) + } +} + +/* + * Wait For Command Clear + * Arg0 - TimeOut value + */ +Method (WTBC, 1, Serialized) +{ + Local0 = Arg0 + While (Local0 > 0) { + /* Wait for Bit to Clear. */ + If ((TB2P & 0x1) != 0x0) { /* 0x1, TBT2PCIE_DON_R */ + Break + } + Local0-- + Sleep (1) + } +} + +/* + * TCSS TBT CONNECT_TOPOLOGY MailBox Command Method + */ +Method (CNTP, 0, Serialized) +{ + Local0 = 0 + /* Set Force Power if it is not set */ + If (DFPE == 0) { + DMAD = 0x22 + DFPE = 1 + /* + * Poll the TBT NVM FW Ready bit with timeout(default is 500ms) before + * send the TBT MailBox command. + */ + While ((INFR == 0) && (Local0 < 500)) { + Sleep (1) + Local0++ + } + } + If (Local0 != 100) { + ITMB (0x3E) /* 0x3E, PCIE2TBT_CONNECT_TOPOLOGY_COMMAND */ + } +} + +Name (STAT, 0x1) /* Variable to save power state 1 - D0, 0 - D3C */ +Name (ALCT, 0x0) /* Connect-Topology cmd can be sent or not 1 - yes, 0 - no */ +/* + * Wait Connect-Topology cmd done + * 0 - no need to wait + * 1 - need to wait + * 2 - wait in progress + */ +Name (WACT, 0x0) + +Method (_PS0, 0, Serialized) +{ + If (WACT == 1) { + /* + * PCIe rp0/rp1 is grouped with DMA0 and PCIe rp2/rp3 is grouped wit DMA1. + * Whenever the Connect-Topology command is in the process, WACT flag is set 1. + * PCIe root ports 0/1/2/3/ and DMA 0/1 _PS0 method set WACT to 2 to indicate + * other thread's _PS0 to wait for the command completion. WACT is cleared to + * be 0 after command is finished. + */ + WACT = 2 + WFCC (100) /* Wait for command complete. */ + WACT = 0 + } ElseIf (WACT == 2) { + While (WACT != 0) { + Sleep (5) + } + } +} + +Method (_PS3, 0, Serialized) +{ +} + +Method (_S0W, 0x0) +{ + Return (0x4) +} + +Method (_PR0) +{ + If (DUID == 0) { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT1 }) + } +} + +Method (_PR3) +{ + If (DUID == 0) { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT1 }) + } +} + +/* + * RTD3 Exit Method to bring TBT controller out of RTD3 mode. + */ +Method (D3CX, 0, Serialized) +{ + DD3E = 0 /* Disable DMA RTD3 */ + STAT = 0x1 +} + +/* + * RTD3 Entry method to enable TBT controller RTD3 mode. + */ +Method (D3CE, 0, Serialized) +{ + DD3E = 1 /* Enable DMA RTD3 */ + STAT = 0 + ALCT = 0x1 /* Allow to send Connect-Topology cmd. */ +} + +/* + * Variable to skip TCSS/TBT D3 cold; 1+: Skip D3CE, 0 - Enable D3CE + * TCSS D3 Cold and TBT RTD3 is only available when system power state is in S0. + */ +Name (SD3C, 0) + +Method (_DSW, 3) +{ + /* If entering Sx (Arg1 > 1), need to skip TCSS D3Cold & TBT RTD3/D3Cold. */ + SD3C = Arg1 +} + +Method (_PRW, 0) +{ + Return (Package() { 0x6D, 4 }) +} + +Method (_DSD, 0) +{ + Return( + Package() + { + /* Thunderbolt GUID for IMR_VALID at ../drivers/acpi/property.c */ + ToUUID("C44D002F-69F9-4E7D-A904-A7BAABDF43F7"), + Package () + { + Package (2) { "IMR_VALID", 1 } + }, + + /* Thunderbolt GUID for WAKE_SUPPORTED at ../drivers/acpi/property.c */ + ToUUID("6C501103-C189-4296-BA72-9BF5A26EBE5D"), + Package () + { + Package (2) { "WAKE_SUPPORTED", 1 } + } + } + ) +} + +Method (_DSM, 4, Serialized) +{ + Return (Buffer() { 0 }) +} |