diff options
Diffstat (limited to 'src/soc/intel/pantherlake/acpi/tcss_pcierp.asl')
| -rw-r--r-- | src/soc/intel/pantherlake/acpi/tcss_pcierp.asl | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/src/soc/intel/pantherlake/acpi/tcss_pcierp.asl b/src/soc/intel/pantherlake/acpi/tcss_pcierp.asl new file mode 100644 index 0000000000..827ccebac2 --- /dev/null +++ b/src/soc/intel/pantherlake/acpi/tcss_pcierp.asl @@ -0,0 +1,335 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +/* + * TCSS PCIE RP Channel Configuration (CCFG) Config Space register offsets + * MPC - Miscellaneous Port Configuration Register + * RPPGEN - Root Port Power Gating Enable Register + * SMSCS - SMI/SCI Status Register + */ +#define PXCS_OPREGION_SIZE 0xc00 +#define TCSS_CFG_MPC_FROM_CCFG 0xba8 +#define TCSS_CFG_SMSCS_FROM_CCFG 0xbac +#define TCSS_CFG_RPPGEN_FROM_CCFG 0xbb2 + +OperationRegion (PXCS, SystemMemory, BASE(_ADR), PXCS_OPREGION_SIZE) +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 */ + , 4, + 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 */ + Offset(0x62), + PSPX, 1, /* 16, PME Status */ + Offset (0x68), + , 10, + LNRE, 1, /* LTR Mechanism Enable */ + Offset(0xA4), + D3HT, 2, /* Power State */ + Offset (0x404), + LSOE, 1, + LNSE, 1, + 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] */ + Offset(TCSS_CFG_MPC_FROM_CCFG), /* 0xba8, MPC - Miscellaneous Port Configuration Register */ + , 30, + HPEX, 1, /* 30, Hot Plug SCI Enable */ + PMEX, 1, /* 31, Power Management SCI Enable */ + Offset(TCSS_CFG_RPPGEN_FROM_CCFG), /* 0xbb2, RPPGEN - Root Port Power Gating Enable */ + , 2, + L23E, 1, /* 2, L23_Rdy Entry Request (L23ER) */ + L23R, 1, /* 3, L23_Rdy to Detect Transition (L23R2DT) */ +} + +Field (PXCS, AnyAcc, NoLock, WriteAsZeros) +{ + Offset(TCSS_CFG_SMSCS_FROM_CCFG), /* 0xbac, 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 }) +} + +/* + * A bitmask of functions support + */ +Name(OPTS, Buffer(2) {0, 0}) + +Device (PXSX) +{ + Name (_ADR, 0x00000000) + + /* + * _DSM Device Specific Method + * + * Arg0: UUID: E5C937D0-3553-4d7a-9117-EA4D19C3434D + * Arg1: Revision ID: 3 + * Arg2: Function index: 0, 9 + * Arg3: Empty package + */ + Method (_DSM, 4, Serialized) + { + If (Arg0 == ToUUID("E5C937D0-3553-4d7a-9117-EA4D19C3434D")) { + If (Arg1 >= 3) { + If (Arg2 == 0) { + /* + * Function index: 0 + * Standard query - A bitmask of functions supported + */ + CreateBitField(OPTS, 9, FUN9) + FUN9 = 1 + Return (OPTS) + } ElseIf (Arg2 == 9) { + /* + * Function index: 9 + * Specifying device readiness durations + */ + Return (Package() { FW_RESET_TIME, FW_DL_UP_TIME, + FW_FLR_RESET_TIME, FW_D3HOT_TO_D0_TIME, + FW_VF_ENABLE_TIME }) + } + } + } + Return (Buffer() { 0x0 }) + } + + Method (_PRW, 0) + { + Return (Package() { 0x76, 4 }) + } +} + +Method (_DSW, 3) +{ + /* If entering Sx (Arg1 > 1), need to skip TCSS D3Cold & TBT RTD3/D3Cold. */ + If ((TUID == 0) || (TUID == 1)) { + \_SB.PCI0.TDM0.SD3C = Arg1 + } Else { + \_SB.PCI0.TDM1.SD3C = Arg1 + } + + C2PM (Arg0, Arg1, Arg2, DCPM) +} + +Method (_PRW, 0) +{ + Return (Package() { 0x76, 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 +} + +/* + * RTD3 Entry method to enable TBT controller RTD3 mode. + */ +Method (D3CE, 0, Serialized) +{ + If (STAT == 0x0) { + Return + } + + If ((LNSE == 1) || (LSOE == 1)) { + If ((LASX == 1) && (LNRE == 0)) { + LNRE = 1 + Sleep(1) + LNRE = 0 + } + } + + 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 */ + } +} + +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 (_S0W, 0x0, NotSerialized) +{ +#if CONFIG(D3COLD_SUPPORT) + Return (0x4) +#else + Return (0x3) +#endif // D3COLD_SUPPORT +} + +Method (_PR0) +{ +#if CONFIG(D3COLD_SUPPORT) + If ((TUID == 0) || (TUID == 1)) { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT1 }) + } +#else + If ((TUID == 0) || (TUID == 1)) { + Return (Package() { \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.TBT1 }) + } +#endif // D3COLD_SUPPORT +} + +Method (_PR3) +{ +#if CONFIG(D3COLD_SUPPORT) + If ((TUID == 0) || (TUID == 1)) { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.D3C, \_SB.PCI0.TBT1 }) + } +#else + If ((TUID == 0) || (TUID == 1)) { + Return (Package() { \_SB.PCI0.TBT0 }) + } Else { + Return (Package() { \_SB.PCI0.TBT1 }) + } +#endif // D3COLD_SUPPORT +} + +/* + * 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) +} |