diff options
Diffstat (limited to 'src/soc/intel/alderlake/acpi/tcss_pcierp.asl')
-rw-r--r-- | src/soc/intel/alderlake/acpi/tcss_pcierp.asl | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/acpi/tcss_pcierp.asl b/src/soc/intel/alderlake/acpi/tcss_pcierp.asl new file mode 100644 index 0000000000..abca5d1607 --- /dev/null +++ b/src/soc/intel/alderlake/acpi/tcss_pcierp.asl @@ -0,0 +1,340 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +OperationRegion (PXCS, SystemMemory, BASE(_ADR), 0x800) +Field (PXCS, AnyAcc, NoLock, Preserve) +{ + VDID, 32, + Offset(0x50), /* LCTL - Link Control Register */ + L0SE, 1, /* 0, L0s Entry Enabled */ + , 3, + LDIS, 1, /* 1, Link Disable */ + , 3, + Offset(0x52), /* LSTS - Link Status Register */ + , 13, + LASX, 1, /* 0, Link Active Status */ + Offset(0x5A), /* SLSTS[7:0] - Slot Status Register */ + ABPX, 1, /* 0, Attention Button Pressed */ + , 2, + PDCX, 1, /* 3, Presence Detect Changed */ + , 2, + PDSX, 1, /* 6, Presence Detect State */ + , 1, + DLSC, 1, /* 8, Data Link Layer State Changed */ + Offset(0x60), /* RSTS - Root Status Register */ + , 16, + PSPX, 1, /* 16, PME Status */ + Offset(0xA4), + D3HT, 2, /* Power State */ + Offset(0xD8), /* 0xD8, MPC - Miscellaneous Port Configuration Register */ + , 30, + HPEX, 1, /* 30, Hot Plug SCI Enable */ + PMEX, 1, /* 31, Power Management SCI Enable */ + Offset(0xE2), /* 0xE2, RPPGEN - Root Port Power Gating Enable */ + , 2, + L23E, 1, /* 2, L23_Rdy Entry Request (L23ER) */ + L23R, 1, /* 3, L23_Rdy to Detect Transition (L23R2DT) */ + Offset(0x420), /* 0x420, PCIEPMECTL (PCIe PM Extension Control) */ + , 30, + DPGE, 1, /* PCIEPMECTL[30]: Disabled, Detect and L23_Rdy State PHY Lane */ + /* Power Gating Enable (DLSULPPGE) */ + Offset(0x5BC), /* 0x5BC, PCIE ADVMCTRL */ + , 3, + RPER, 1, /* RTD3PERST[3] */ + RPFE, 1, /* RTD3PFETDIS[4] */ +} + +Field (PXCS, AnyAcc, NoLock, WriteAsZeros) +{ + Offset(0xDC), /* 0xDC, SMSCS - SMI/SCI Status Register */ + , 30, + HPSX, 1, /* 30, Hot Plug SCI Status */ + PMSX, 1 /* 31, Power Management SCI Status */ +} + +/* + * _DSM Device Specific Method + * + * Arg0: UUID Unique function identifier + * Arg1: Integer Revision Level + * Arg2: Integer Function Index (0 = Return Supported Functions) + * Arg3: Package Parameters + */ +Method (_DSM, 4, Serialized) +{ + Return (Buffer() { 0x00 }) +} + +Device (PXSX) +{ + Name (_ADR, 0x00000000) + + Method (_PRW, 0) + { + Return (Package() { 0x69, 4 }) + } +} + +Method (_DSW, 3) +{ + C2PM (Arg0, Arg1, Arg2, DCPM) + /* If entering Sx (Arg1 > 1), need to skip TCSS D3Cold & TBT RTD3/D3Cold. */ + \_SB.PCI0.TDM0.SD3C = Arg1 + \_SB.PCI0.TDM1.SD3C = Arg1 +} + +Method (_PRW, 0) +{ + Return (Package() { 0x69, 4 }) +} + +/* + * Sub-Method of _L61 Hot-Plug event + * _L61 event handler should invoke this method to support HotPlug wake event from TBT RP. + */ +Method (HPEV, 0, Serialized) +{ + If ((VDID != 0xFFFFFFFF) && HPSX) { + If ((PDCX == 1) && (DLSC == 1)) { + /* Clear all status bits first. */ + PDCX = 1 + HPSX = 1 + + /* Perform proper notification to the OS. */ + Notify (^, 0) + } Else { + /* False event. Clear Hot-Plug Status, then exit. */ + HPSX = 1 + } + } +} + +/* + * Power Management routine for D3 + */ +Name (STAT, 0x1) /* Variable to save power state 1 - D0, 0 - D3C */ + +/* + * RTD3 Exit Method to bring TBT controller out of RTD3 mode. + */ +Method (D3CX, 0, Serialized) +{ + If (STAT == 0x1) { + Return + } + + RPFE = 0 /* Set RTD3PFETDIS = 0 */ + RPER = 0 /* Set RTD3PERST = 0 */ + L23R = 1 /* Set L23r2dt = 1 */ + + /* + * Poll for L23r2dt == 0. Wait for transition to Detect. + */ + Local0 = 0 + Local1 = L23R + While (Local1) { + If (Local0 > 20) { + Break + } + Sleep(5) + Local0++ + Local1 = L23R + } + STAT = 0x1 + + /* Wait for LA = 1 */ + Local0 = 0 + Local1 = LASX + While (Local1 == 0) { + If (Local0 > 20) { + Break + } + Sleep(5) + Local0++ + Local1 = LASX + } +} + +/* + * RTD3 Entry method to enable TBT controller RTD3 mode. + */ +Method (D3CE, 0, Serialized) +{ + If (STAT == 0x0) { + Return + } + + L23E = 1 /* Set L23er = 1 */ + + /* Poll until L23er == 0 */ + Local0 = 0 + Local1 = L23E + While (Local1) { + If (Local0 > 20) { + Break + } + Sleep(5) + Local0++ + Local1 = L23E + } + + STAT = 0 /* D3Cold */ + RPFE = 1 /* Set RTD3PFETDIS = 1 */ + RPER = 1 /* Set RTD3PERST = 1 */ +} + +Method (_PS0, 0, Serialized) +{ + HPEV () /* Check and handle Hot Plug SCI status. */ + If (HPEX == 1) { + HPEX = 0 /* Disable Hot Plug SCI */ + } + HPME () /* Check and handle PME SCI status */ + If (PMEX == 1) { + PMEX = 0 /* Disable Power Management SCI */ + } + + Sleep(100) /* Wait for 100ms before return to OS starts any OS activities. */ +} + +Method (_PS3, 0, Serialized) +{ + /* Check it is hotplug SCI or not, then clear PDC accordingly */ + If (PDCX == 1) { + If (DLSC == 0) { + /* Clear PDC since it is not a hotplug. */ + PDCX = 1 + } + } + + If (HPEX == 0) { + HPEX = 1 /* Enable Hot Plug SCI. */ + HPEV () /* Check and handle Hot Plug SCI status. */ + } + If (PMEX == 0) { + PMEX = 1 /* Enable Power Management SCI. */ + HPME () /* Check and handle PME SCI status. */ + } +} + +Method (_DSD, 0) { + If ((TUID == 0) || (TUID == 1)) { + Return ( Package() { + /* acpi_pci_bridge_d3 at ../drivers/pci/pci-acpi.c */ + ToUUID("6211E2C0-58A3-4AF3-90E1-927A4E0C55A4"), + Package () + { + Package (2) { "HotPlugSupportInD3", 1 }, + }, + + /* pci_acpi_set_untrusted at ../drivers/pci/pci-acpi.c */ + ToUUID("EFCC06CC-73AC-4BC3-BFF0-76143807C389"), + Package () { + Package (2) { "ExternalFacingPort", 1 }, /* TBT/CIO port */ + /* + * UID of the TBT RP on platform, range is: 0, 1 ..., + * (NumOfTBTRP - 1). + */ + Package (2) { "UID", TUID }, + }, + ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), + Package () { + Package (2) { "usb4-host-interface", \_SB.PCI0.TDM0 }, + Package (2) { "usb4-port-number", TUID }, + } + }) + } ElseIf (TUID == 2) { + Return ( Package () { + /* acpi_pci_bridge_d3 at ../drivers/pci/pci-acpi.c */ + ToUUID("6211E2C0-58A3-4AF3-90E1-927A4E0C55A4"), + Package () + { + Package (2) { "HotPlugSupportInD3", 1 }, + }, + + /* pci_acpi_set_untrusted at ../drivers/pci/pci-acpi.c */ + ToUUID("EFCC06CC-73AC-4BC3-BFF0-76143807C389"), + Package () { + Package (2) { "ExternalFacingPort", 1 }, /* TBT/CIO port */ + /* + * UID of the TBT RP on platform, range is: 0, 1 ..., + * (NumOfTBTRP - 1). + */ + Package (2) { "UID", TUID }, + }, + ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), + Package () { + Package (2) { "usb4-host-interface", \_SB.PCI0.TDM1 }, + Package (2) { "usb4-port-number", 0 }, + } + }) + } Else { /* TUID == 3 */ + Return ( Package () { + /* acpi_pci_bridge_d3 at ../drivers/pci/pci-acpi.c */ + ToUUID("6211E2C0-58A3-4AF3-90E1-927A4E0C55A4"), + Package () + { + Package (2) { "HotPlugSupportInD3", 1 }, + }, + + /* pci_acpi_set_untrusted at ../drivers/pci/pci-acpi.c */ + ToUUID("EFCC06CC-73AC-4BC3-BFF0-76143807C389"), + Package () { + Package (2) { "ExternalFacingPort", 1 }, /* TBT/CIO port */ + /* + * UID of the TBT RP on platform, range is: 0, 1 ..., + * (NumOfTBTRP - 1). + */ + Package (2) { "UID", TUID }, + }, + ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), + Package () { + Package (2) { "usb4-host-interface", \_SB.PCI0.TDM1 }, + Package (2) { "usb4-port-number", 1 }, + } + }) + } +} + +Method (_S0W, 0x0, NotSerialized) +{ + Return (0x4) +} + +Method (_PR0) +{ + If ((TUID == 0) || (TUID == 1)) { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT1 }) + } +} + +Method (_PR3) +{ + If ((TUID == 0) || (TUID == 1)) { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT1 }) + } +} + +/* + * PCI_EXP_STS Handler for PCIE Root Port + */ +Method (HPME, 0, Serialized) +{ + If ((VDID != 0xFFFFFFFF) && (PMSX == 1)) { /* if port exists and PME SCI Status set */ + /* + * Notify child device; this will cause its driver to clear PME_Status from + * device. + */ + Notify (PXSX, 0x2) + PMSX = 1 /* clear rootport's PME SCI status */ + /* + * Consume one pending PME notification to prevent it from blocking the queue. + */ + PSPX = 1 + Return (0x01) + } + Return (0x00) +} |