diff options
Diffstat (limited to 'Platform/Intel/KabylakeOpenBoardPkg/Features/Tbt/AcpiTables/Rtd3SptPcieTbt.asl')
| -rw-r--r-- | Platform/Intel/KabylakeOpenBoardPkg/Features/Tbt/AcpiTables/Rtd3SptPcieTbt.asl | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/Platform/Intel/KabylakeOpenBoardPkg/Features/Tbt/AcpiTables/Rtd3SptPcieTbt.asl b/Platform/Intel/KabylakeOpenBoardPkg/Features/Tbt/AcpiTables/Rtd3SptPcieTbt.asl new file mode 100644 index 0000000000..b54b5a41c3 --- /dev/null +++ b/Platform/Intel/KabylakeOpenBoardPkg/Features/Tbt/AcpiTables/Rtd3SptPcieTbt.asl @@ -0,0 +1,410 @@ +/** @file
+ ACPI RTD3 SSDT table for SPT PCIe
+
+Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#define PID_ICC 0xDC
+#define R_PCH_PCR_ICC_MSKCKRQ 0x100C ///< Mask Control CLKREQ
+
+External(PCRA,MethodObj)
+External(PCRO,MethodObj)
+External(\MMRP, MethodObj)
+External(\MMTB, MethodObj)
+External(\TRDO, IntObj)
+External(\TRD3, IntObj)
+External(\TBPE, IntObj)
+External(\TOFF, IntObj)
+External(\TBSE, IntObj)
+External(\TBOD, IntObj)
+External(\TBRP, IntObj)
+External(\TBHR, IntObj)
+External(\RTBC, IntObj)
+External(\TBCD, IntObj)
+
+Name(G2SD, 0) // Go2Sx done, set by GO2S, cleaned by _ON
+
+Name(WKEN, 0)
+
+ Method(_S0W, 0)
+ {
+ /// This method returns the lowest D-state supported by PCIe root port during S0 state
+
+ ///- PMEs can be generated from D3hot for ULT
+ Return(4)
+
+ /** @defgroup pcie_s0W PCIE _S0W **/
+ } // End _S0W
+
+ Method (_DSD, 0) {
+ Return (
+ Package () {
+ ToUUID("6211E2C0-58A3-4AF3-90E1-927A4E0C55A4"),
+ Package () {
+ Package (2) {"HotPlugSupportInD3", 1},
+ }
+ }
+ ) // End of Return ()
+ }
+
+ Method(_DSW, 3)
+ {
+ /// This method is used to enable/disable wake from PCIe (WKEN)
+ If (LGreaterEqual(Arg1, 1)) { /// If entering Sx, need to disable WAKE# from generating runtime PME
+ /// Also set 2 to TOFF.
+ Store(0, WKEN)
+ Store (2, TOFF)
+ } Else { /// If Staying in S0
+ If(LAnd(Arg0, Arg2)) ///- Check if Exiting D0 and arming for wake
+ { ///- Set PME
+ Store(1, WKEN)
+ Store (1, TOFF)
+ } Else { ///- Disable runtime PME, either because staying in D0 or disabling wake
+ Store(0, WKEN)
+ Store(0, TOFF)
+ }
+ }
+
+ /** @defgroup pcie_dsw PCIE _DSW **/
+ } // End _DSW
+
+
+ PowerResource(PXP, 0, 0)
+ {
+ /// Define the PowerResource for PCIe slot
+ /// Method: _STA(), _ON(), _OFF()
+ /** @defgroup pcie_pxp PCIE Power Resource **/
+
+ Method(_STA, 0)
+ {
+ Return(PSTA())
+ } /** @defgroup pcie_sta PCIE _STA method **/
+
+ Method(_ON) /// Turn on core power to PCIe Slot
+ {
+ Store(1, TRDO)
+ PON()
+ Store(0, TRDO)
+ } /** @defgroup pcie_on PCIE _ON method **/
+
+ Method(_OFF) /// Turn off core power to PCIe Slot
+ {
+ Store(1, TRD3)
+ POFF()
+ Store(0, TRD3)
+ } // End of Method_OFF
+ } // End PXP
+
+ Method(PSTA, 0)
+ {
+ /// Returns the status of PCIe slot core power
+ // detect power pin status
+ if(LNotEqual(DeRefOf(Index(PWRG, 0)),0)) {
+ if(LEqual(DeRefOf(Index(PWRG, 0)),1)) { // GPIO mode
+ if(LEqual(\_SB.GGOV(DeRefOf(Index(PWRG, 2))),DeRefOf(Index(PWRG, 3)))){
+ Return (1)
+ } Else {
+ Return (0)
+ }
+ } // GPIO mode
+ if(LEqual(DeRefOf(Index(PWRG, 0)),2)) { // IOEX mode
+ if(LEqual(\_SB.PCI0.GEXP.GEPS(DeRefOf(Index(PWRG, 1)),DeRefOf(Index(PWRG, 2))),DeRefOf(Index(PWRG, 3)))){
+ Return (1)
+ } Else {
+ Return (0)
+ }
+ } // IOEX mode
+ }
+ // detect reset pin status
+ if(LNotEqual(DeRefOf(Index(RSTG, 0)),0)) {
+ if(LEqual(DeRefOf(Index(RSTG, 0)),1)) { // GPIO mode
+ if(LEqual(\_SB.GGOV(DeRefOf(Index(RSTG, 2))),DeRefOf(Index(RSTG, 3)))){
+ Return (1)
+ } Else {
+ Return (0)
+ }
+ } // GPIO mode
+ if(LEqual(DeRefOf(Index(RSTG, 0)),2)) { // IOEX mode
+ if(LEqual(\_SB.PCI0.GEXP.GEPS(DeRefOf(Index(RSTG, 1)),DeRefOf(Index(RSTG, 2))),DeRefOf(Index(RSTG, 3)))){
+ Return (1)
+ } Else {
+ Return (0)
+ }
+ } // IOEX mode
+ }
+ Return (0)
+ } /** @defgroup pcie_sta PCIE _STA method **/
+
+ Method (SXEX, 0, Serialized) {
+
+ Store(\MMTB(TBSE), Local7)
+ OperationRegion(TBDI, SystemMemory, Local7, 0x550)// TBT HR PCICFG MMIO
+ Field(TBDI,DWordAcc, NoLock, Preserve) {
+ DIVI, 32,
+ CMDR, 32,
+ Offset(0x548),
+ TB2P, 32,
+ P2TB, 32
+ }
+
+ Store(100, Local1)
+ Store(0x09, P2TB) // Write SX_EXIT_TBT_CONNECTED to PCIe2TBT
+ While (LGreater(Local1, 0)) {
+
+ Store(Subtract(Local1, 1), Local1)
+ Store(TB2P, Local2)
+ If (LEqual(Local2, 0xFFFFFFFF)) { // Device gone
+ Return()
+ }
+ If (And(Local2, 1)) { // Done
+ break
+ }
+ Sleep(5)
+ }
+ Store(0x0, P2TB) // Write 0 to PCIe2TBT
+
+ // Fast Link bring-up flow
+ Store(500, Local1)
+ While (LGreater(Local1, 0)) {
+ Store(Subtract(Local1, 1), Local1)
+ Store(TB2P, Local2)
+ If (LEqual(Local2, 0xFFFFFFFF)) {// Device gone
+ Return()
+ }
+ If (LNotEqual(DIVI, 0xFFFFFFFF)) {
+ break
+ }
+ Sleep(10)
+ }
+ } // End of Method(SXEX, 0, Serialized)
+
+ Method(PON) /// Turn on core power to PCIe Slot
+ {
+
+ Store(\MMRP(\TBSE), Local7)
+ OperationRegion(L23P,SystemMemory,Local7,0xE4)
+ Field(L23P,WordAcc, NoLock, Preserve)
+ {
+ Offset(0xA4),// PMCSR
+ PSD0, 2, // PowerState
+ Offset(0xE2),// 0xE2, RPPGEN - Root Port Power Gating Enable
+ , 2,
+ L2TE, 1, // 2, L23_Rdy Entry Request (L23ER)
+ L2TR, 1, // 3, L23_Rdy to Detect Transition (L23R2DT)
+ }
+
+ Store(\MMTB(\TBSE), Local6)
+ OperationRegion(TBDI, SystemMemory, Local6, 0x550)// TBT HR PCICFG MMIO
+ Field(TBDI,DWordAcc, NoLock, Preserve) {
+ DIVI, 32,
+ CMDR, 32,
+ Offset(0xA4),
+ TBPS, 2, // PowerState of TBT
+ Offset(0x548),
+ TB2P, 32,
+ P2TB, 32
+ }
+
+ Store(0, TOFF)
+ // Check RTD3 power enable, if already ON, no need to execute sx_exit
+ If (TBPE) {
+ Return()
+ }
+
+ Store(0,G2SD)
+ If (\RTBC) {
+ /// de-assert CLK_REQ MSK
+ if(LNotEqual(DeRefOf(Index(SCLK, 0)),0)) { // if power gating enabled
+ PCRA(PID_ICC,R_PCH_PCR_ICC_MSKCKRQ,Not(DeRefOf(Index(SCLK, 1)))) // And ~SCLK to clear bit
+ }
+ Sleep(\TBCD)
+ }
+
+ /// Turn ON Power for PCIe Slot
+ if(LNotEqual(DeRefOf(Index(PWRG, 0)),0)) { // if power gating enabled
+ if(LEqual(DeRefOf(Index(PWRG, 0)),1)) { // GPIO mode
+ \_SB.SGOV(DeRefOf(Index(PWRG, 2)),DeRefOf(Index(PWRG, 3)))
+ Store(1, TBPE)
+ Sleep(PEP0) /// Sleep for programmable delay
+ }
+ if(LEqual(DeRefOf(Index(PWRG, 0)),2)) { // IOEX mode
+ \_SB.PCI0.GEXP.SGEP(DeRefOf(Index(PWRG, 1)),DeRefOf(Index(PWRG, 2)),DeRefOf(Index(PWRG, 3)))
+ Store(1, TBPE)
+ Sleep(PEP0) /// Sleep for programmable delay
+ }
+ }
+
+ /// De-Assert Reset Pin
+ if(LNotEqual(DeRefOf(Index(RSTG, 0)),0)) { // if reset pin enabled
+ if(LEqual(DeRefOf(Index(RSTG, 0)),1)) { // GPIO mode
+ \_SB.SGOV(DeRefOf(Index(RSTG, 2)),DeRefOf(Index(RSTG, 3)))
+ }
+ if(LEqual(DeRefOf(Index(RSTG, 0)),2)) { // IOEX mode
+ \_SB.PCI0.GEXP.SGEP(DeRefOf(Index(RSTG, 1)),DeRefOf(Index(RSTG, 2)),DeRefOf(Index(RSTG, 3)))
+ }
+ }
+
+ /// Clear DLSULPPGE, then set L23_Rdy to Detect Transition (L23R2DT)
+ Store(0, DPGE)
+ Store(1, L2TR)
+ Sleep(16)
+ Store(0, Local0)
+ /// Wait up to 12 ms for transition to Detect
+ While(L2TR) {
+ If(Lgreater(Local0, 4)) // Debug - Wait for 5 ms
+ {
+ Break
+ }
+ Sleep(16)
+ Increment(Local0)
+ }
+ /// Once in Detect, wait up to 124 ms for Link Active (typically happens in under 70ms)
+ /// Worst case per PCIe spec from Detect to Link Active is:
+ /// 24ms in Detect (12+12), 72ms in Polling (24+48), 28ms in Config (24+2+2+2+2)
+ Store(1, DPGE)
+ Store(0, Local0)
+ While(LEqual(LASX,0)) {
+ If(Lgreater(Local0, 8))
+ {
+ Break
+ }
+ Sleep(16)
+ Increment(Local0)
+ }
+ Store(0, LEDM) /// Set PCIEDBG.DMIL1EDM (324[3]) = 0
+
+ // TBT special sleep.
+ Store(PSD0, Local1)
+ Store(0, PSD0)// D0
+ Store(20, Local2) // Poll for TBT, up to 200 ms
+
+ While (LGreater(Local2, 0)) {
+ Store(Subtract(Local2, 1), Local2)
+ Store(TB2P, Local3)
+ If (LNotEqual(Local3, 0xFFFFFFFF)) { // Done
+ break
+ }
+ Sleep(10)
+ }
+
+ If (LLessEqual(Local2, 0)) {
+ }
+ SXEX()
+ Store(Local1, PSD0) // Back to Local1
+ } /** @defgroup pcie_on PCIE _ON method **/
+
+ Method(POFF) { /// Turn off core power to PCIe Slot
+ If (LEqual(TOFF, 0)) {
+ Return()
+ }
+ Store(\MMRP(\TBSE), Local7)
+ OperationRegion(L23P, SystemMemory, Local7, 0xE4)
+ Field(L23P,WordAcc, NoLock, Preserve)
+ {
+ Offset(0xA4),// PMCSR
+ PSD0, 2, // PowerState
+ Offset(0xE2),// 0xE2, RPPGEN - Root Port Power Gating Enable
+ , 2,
+ L2TE, 1, // 2, L23_Rdy Entry Request (L23ER)
+ L2TR, 1, // 3, L23_Rdy to Detect Transition (L23R2DT)
+ }
+
+ Store(\MMTB(TBSE), Local6)
+ OperationRegion(TBDI, SystemMemory, Local6, 0x550)// TBT HR PCICFG MMIO
+ Field(TBDI,DWordAcc, NoLock, Preserve) {
+ DIVI, 32,
+ CMDR, 32,
+ Offset(0xA4),
+ TBPS, 2, // PowerState of TBT
+ Offset(0x548),
+ TB2P, 32,
+ P2TB, 32
+ }
+
+ Store(PSD0, Local1)
+ Store(0, PSD0)// D0
+
+ Store(P2TB, Local3)
+
+ If (Lgreater(TOFF, 1)) {
+ Sleep(10)
+ Store(Local1, PSD0) // Back to Local1
+ Return()
+ }
+ Store(0, TOFF)
+
+ Store(Local1, PSD0) // Back to Local1
+
+ /// Set L23_Rdy Entry Request (L23ER)
+ Store(1, L2TE)
+ Sleep(16)
+ Store(0, Local0)
+ While(L2TE) {
+ If(Lgreater(Local0, 4)) /// Debug - Wait for 5 ms
+ {
+ Break
+ }
+ Sleep(16)
+ Increment(Local0)
+ }
+ Store(1, LEDM) /// PCIEDBG.DMIL1EDM (324[3]) = 1
+
+ /// Assert Reset Pin
+ if(LNotEqual(DeRefOf(Index(RSTG, 0)),0)) { // if reset pin enabled
+ if(LEqual(DeRefOf(Index(RSTG, 0)),1)) { // GPIO mode
+ \_SB.SGOV(DeRefOf(Index(RSTG, 2)),Xor(DeRefOf(Index(RSTG, 3)),1))
+ }
+ if(LEqual(DeRefOf(Index(RSTG, 0)),2)) { // IOEX mode
+ \_SB.PCI0.GEXP.SGEP(DeRefOf(Index(RSTG, 1)),DeRefOf(Index(RSTG, 2)),Xor(DeRefOf(Index(RSTG, 3)),1))
+ }
+ }
+ If (\RTBC) {
+ /// assert CLK_REQ MSK
+ if(LNotEqual(DeRefOf(Index(SCLK, 0)),0)) { // if power gating enabled
+ PCRO(PID_ICC,R_PCH_PCR_ICC_MSKCKRQ,DeRefOf(Index(SCLK, 1))) // Or SCLK to set bit
+ Sleep(16)
+ }
+ }
+
+ /// Power OFF for TBT
+ if(LNotEqual(DeRefOf(Index(PWRG, 0)),0)) { // if power gating enabled
+ if(LEqual(DeRefOf(Index(PWRG, 0)),1)) { // GPIO mode
+ \_SB.SGOV(DeRefOf(Index(PWRG, 2)),Xor(DeRefOf(Index(PWRG, 3)),1))
+ }
+ if(LEqual(DeRefOf(Index(PWRG, 0)),2)) { // IOEX mode
+ \_SB.PCI0.GEXP.SGEP(DeRefOf(Index(PWRG, 1)),DeRefOf(Index(PWRG, 2)),Xor(DeRefOf(Index(PWRG, 3)),1))
+ }
+ }
+
+ Store(0, TBPE)
+
+ Store(1, LDIS) /// Set Link Disable
+ Store(0, LDIS) /// Toggle link disable
+
+ /// enable WAKE
+ If (WKEN) {
+ If (LNotEqual(DeRefOf(Index(WAKG, 0)),0)) { // if power gating enabled
+ If (LEqual(DeRefOf(Index(WAKG, 0)),1)) { // GPIO mode
+ \_SB.SGOV(DeRefOf(Index(WAKG, 2)),DeRefOf(Index(WAKG, 3)))
+ \_SB.SHPO(DeRefOf(Index(WAKG, 2)), 0) // set gpio ownership to ACPI(0=ACPI mode, 1=GPIO mode)
+ }
+ If (LEqual(DeRefOf(Index(WAKG, 0)),2)) { // IOEX mode
+ \_SB.PCI0.GEXP.SGEP(DeRefOf(Index(WAKG, 1)),DeRefOf(Index(WAKG, 2)),DeRefOf(Index(WAKG, 3)))
+ }
+ }
+ }
+ Sleep(\TBOD)
+ /** @defgroup pcie_off PCIE _OFF method **/
+ } // End of Method_OFF
+
+ Name(_PR0, Package(){PXP})
+ Name(_PR3, Package(){PXP})
+
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