/*++ Copyright (c) 1999 - 2019, Intel Corporation. All rights reserved SPDX-License-Identifier: BSD-2-Clause-Patent Module Name: IgdOpRn.ASL Abstract: IGD OpRegion/Software SCI Reference Code for the Baytrail Family. This file contains the interrupt handler code for the Integrated Graphics Device (IGD) OpRegion/Software SCI mechanism. --*/ //NOTES: // // (1) The code contained in this file inherits the scope in which it // was included. So BIOS developers must be sure to include this // file in the scope associated with the graphics device // (ex. \_SB.PCI0.GFX0). // (2) Create a _L06 method under the GPE scope to handle the event // generated by the graphics driver. The _L06 method must call // the GSCI method in this file. // (3) The MCHP operation region assumes that _ADR and _BBN names // corresponding to bus 0, device0, function 0 have been declared // under the PCI0 scope. // (4) Before the first execution of the GSCI method, the base address // of the GMCH SCI OpRegion must be programmed where the driver can // access it. A 32bit scratch register at 0xFC in the IGD PCI // configuration space (B0/D2/F0/R0FCh) is used for this purpose. // Define an OperationRegion to cover the GMCH PCI configuration space as // described in the IGD OpRegion specificiation. // Define an OperationRegion to cover the IGD PCI configuration space as // described in the IGD OpRegion specificiation. OperationRegion(IGDP, PCI_Config,0x00,0x100) Field(IGDP, AnyAcc, NoLock, Preserve) { Offset(0x10), // GTTMMADR MADR, 32, Offset(0x50), // GMCH Graphics Control Register , 1, GIVD, 1, // IGD VGA disable bit , 1, GUMA, 5, // Stolen memory size , 8, Offset(0x54), , 4, GMFN, 1, // Gfx function 1 enable , 27, Offset(0x5C), // Stolen Memory Base Address GSTM, 32, Offset(0xE0), // Reg 0xE8, SWSCI control register GSSE, 1, // Graphics SCI event (1=event pending) GSSB, 14, // Graphics SCI scratchpad bits GSES, 1, // Graphics event select (1=SCI) Offset(0xE4), ASLE, 8, // Reg 0xE4, ASLE interrupt register , 24, // Only use first byte of ASLE reg Offset(0xFC), ASLS, 32, // Reg 0xFC, Address of the IGD OpRegion } // Define an OperationRegion to cover the IGD OpRegion layout. OperationRegion(IGDM, SystemMemory, ASLB, 0x2000) Field(IGDM, AnyAcc, NoLock, Preserve) { // OpRegion Header SIGN, 128, // Signature-"IntelGraphicsMem" SIZE, 32, // OpRegion Size OVER, 32, // OpRegion Version SVER, 256, // System BIOS Version VVER, 128, // VBIOS Version GVER, 128, // Driver version MBOX, 32, // Mailboxes supported DMOD, 32, // Driver Model PCON, 32, // 96, Platform Configuration // OpRegion Mailbox 1 (Public ACPI Methods) // Note: Mailbox 1 is normally reserved for desktop platforms. Offset(0x100), DRDY, 32, // Driver readiness (ACPI notification) CSTS, 32, // Notification status CEVT, 32, // Current event Offset(0x120), DIDL, 32, // Supported display device ID list DDL2, 32, // Allows for 8 devices DDL3, 32, DDL4, 32, DDL5, 32, DDL6, 32, DDL7, 32, DDL8, 32, CPDL, 32, // Currently present display list CPL2, 32, // Allows for 8 devices CPL3, 32, CPL4, 32, CPL5, 32, CPL6, 32, CPL7, 32, CPL8, 32, CAD1, 32, // Currently active display list CAL2, 32, // Allows for 8 devices CAL3, 32, CAL4, 32, CAL5, 32, CAL6, 32, CAL7, 32, CAL8, 32, NADL, 32, // Next active display list NDL2, 32, // Allows for 8 devices NDL3, 32, NDL4, 32, NDL5, 32, NDL6, 32, NDL7, 32, NDL8, 32, ASLP, 32, // ASL sleep timeout TIDX, 32, // Toggle table index CHPD, 32, // Current hot plug enable indicator CLID, 32, // Current lid state indicator CDCK, 32, // Current docking state indicator SXSW, 32, // Display switch notify on resume EVTS, 32, // Events supported by ASL (diag only) CNOT, 32, // Current OS notifications (diag only) NRDY, 32, // OpRegion Mailbox 2 (Software SCI Interface) Offset(0x200), // SCIC SCIE, 1, // SCI entry bit (1=call unserviced) GEFC, 4, // Entry function code GXFC, 3, // Exit result GESF, 8, // Entry/exit sub-function/parameter , 16, // SCIC[31:16] reserved Offset(0x204), // PARM PARM, 32, // PARM register (extra parameters) DSLP, 32, // Driver sleep time out // OpRegion Mailbox 3 (BIOS to Driver Notification) // Note: Mailbox 3 is normally reserved for desktop platforms. Offset(0x300), ARDY, 32, // Driver readiness (power conservation) ASLC, 32, // ASLE interrupt command/status TCHE, 32, // Technology enabled indicator ALSI, 32, // Current ALS illuminance reading BCLP, 32, // Backlight brightness PFIT, 32, // Panel fitting state or request CBLV, 32, // Current brightness level BCLM, 320, // Backlight brightness level duty cycle mapping table CPFM, 32, // Current panel fitting mode EPFM, 32, // Enabled panel fitting modes PLUT, 592, // Optional. 74-byte Panel LUT Table PFMB, 32, // Optional. PWM Frequency and Minimum Brightness CCDV, 32, // Optional. Gamma, Brightness, Contrast values. PCFT, 32, // Optional. Power Conservation Features Offset(0x3B6), STAT, 32, // Status register // OpRegion Mailbox 4 (VBT) Offset(0x400), GVD1, 0xC000, // 6K bytes maximum VBT image // OpRegion Mailbox 5 (BIOS to Driver Notification Extension) Offset(0x1C00), PHED, 32, // Panel Header BDDC, 2048, // Panel EDID (Max 256 bytes) } // Convert boot display type into a port mask. Name (DBTB, Package() { 0x0000, // Automatic 0x0007, // Port-0 : Integrated CRT 0x0038, // Port-1 : DVO-A, or Integrated LVDS 0x01C0, // Port-2 : SDVO-B, or SDVO-B/C 0x0E00, // Port-3 : SDVO-C 0x003F, // [CRT + DVO-A / Integrated LVDS] 0x01C7, // [CRT + SDVO-B] or [CRT + SDVO-B/C] 0x0E07, // [CRT + SDVO-C] 0x01F8, // [DVO-A / Integrated LVDS + SDVO-B] 0x0E38, // [DVO-A / Integrated LVDS + SDVO-C] 0x0FC0, // [SDVO-B + SDVO-C] 0x0000, // Reserved 0x0000, // Reserved 0x0000, // Reserved 0x0000, // Reserved 0x0000, // Reserved 0x7000, // Port-4: Integrated TV 0x7007, // [Integrated TV + CRT] 0x7038, // [Integrated TV + LVDS] 0x71C0, // [Integrated TV + DVOB] 0x7E00 // [Integrated TV + DVOC] }) // Core display clock value table. Name (CDCT, Package() { Package() {160}, Package() {200}, Package() {267}, Package() {320}, Package() {356}, Package() {400}, }) // Defined exit result values: Name (SUCC, 1) // Exit result: Success Name (NVLD, 2) // Exit result: Invalid parameter Name (CRIT, 4) // Exit result: Critical failure Name (NCRT, 6) // Exit result: Non-critical failure /************************************************************************; ;* ;* Name: GSCI ;* ;* Description: Handles an SCI generated by the graphics driver. The ;* PARM and SCIC input fields are parsed to determine the ;* functionality requested by the driver. GBDA or SBCB ;* is called based on the input data in SCIC. ;* ;* Usage: The method must be called in response to a GPE 06 event ;* which will be generated by the graphics driver. ;* Ex: Method(\_GPE._L06) {Return(\_SB.PCI0.GFX0.GSCI())} ;* ;* Input: PARM and SCIC are indirect inputs ;* ;* Output: PARM and SIC are indirect outputs ;* ;* References: GBDA (Get BIOS Data method), SBCB (System BIOS Callback ;* method) ;* ;************************************************************************/ Method (GSCI, 0, Serialized) { Include("IgdOGBDA.ASL") // "Get BIOS Data" Functions Include("IgdOSBCB.ASL") // "System BIOS CallBacks" If (LEqual(GEFC, 4)) { Store(GBDA(), GXFC) // Process Get BIOS Data functions } If (LEqual(GEFC, 6)) { Store(SBCB(), GXFC) // Process BIOS Callback functions } Store(0, GEFC) // Wipe out the entry function code Store(1, SCIS) // Clear the GUNIT SCI status bit in PCH ACPI I/O space. Store(0, GSSE) // Clear the SCI generation bit in PCI space. Store(0, SCIE) // Clr SCI serviced bit to signal completion Return(Zero) } // Include MOBLFEAT.ASL for mobile systems only. Remove for desktop. Include("IgdOMOBF.ASL") // IGD SCI mobile features