DSDT supported !
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@ -45,7 +45,7 @@ struct RSDPLegacy {
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//
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// ACPI 2.0 descriptor
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//
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struct RSDPDescriptor {
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struct RSDPDescriptor_t {
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// RSDT ACPI 1.0 and above
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struct RSDPLegacy legacy;
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@ -59,7 +59,7 @@ struct RSDPDescriptor {
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//
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// ACPI System Description Table
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//
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struct SDTHeader {
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struct SDTHeader_t {
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char signature[4];
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uint length;
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uchar revision;
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@ -69,7 +69,19 @@ struct SDTHeader {
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uint OEMRevision;
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uint creatorID;
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uint creatorRevision;
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uint sdtTablePtr;
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uint sdtEntry;
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};
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//
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// GAS type, used by ACPI tables to inform about registers
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//
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struct GenericAddressStructure
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{
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uchar addressSpace;
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uchar width;
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uchar offset;
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uchar accessSize;
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ulong address;
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};
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//
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@ -103,13 +115,89 @@ enum {
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#define N_SDT_TYPES 23
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//----------------------------------------------------------------------------//
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// FADT related
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//
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struct FADT_t
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{
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char signature[4];
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uint length;
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uchar revision;
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uchar checksum;
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char OEMID[6];
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char OEMTableID[8];
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uint OEMRevision;
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uint creatorID;
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uint creatorRevision;
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uint firmwareCtrlAddress;
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uint dsdtAddress;
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uchar reserved; // legacy
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uchar preferredPowerManagementProfile;
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ushort SCIInterrupt;
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uint SMICommandPort;
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uchar acpiEnable;
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uchar acpiDisable;
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uchar S4BIOSREQ;
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uchar PSTATEControl;
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uint PM1aEventBlock;
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uint PM1bEventBlock;
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uint PM1aControlBlock;
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uint PM1bControlBlock;
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uint PM2ControlBlock;
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uint PMTimerBlock;
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uint GPE0Block;
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uint GPE1Block;
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uchar PM1EventLength;
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uchar PM1ControlLength;
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uchar PM2ControlLength;
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uchar PMTimerLength;
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uchar GPE0Length;
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uchar GPE1Length;
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uchar GPE1Base;
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uchar CStateControl;
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ushort worstC2Latency;
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ushort worstC3Latency;
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ushort flushSize;
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ushort flushStride;
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uchar dutyOffset;
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uchar dutyWidth;
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uchar dayAlarm;
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uchar monthAlarm;
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uchar century;
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// reserved in ACPI1, available since ACPI2
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ushort bootArchitectureFlags;
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uchar reserved2; // legacy
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uint flags;
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struct GenericAddressStructure resetReg;
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uchar resetValue;
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uchar reserved3[3];
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// 64bit pointers, available since ACPI2
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ulong xFirmwareControlAddress;
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ulong xDsdtAddress;
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struct GenericAddressStructure xPM1aEventBlock;
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struct GenericAddressStructure xPM1bEventBlock;
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struct GenericAddressStructure xPM1aControlBlock;
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struct GenericAddressStructure xPM1bControlBlock;
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struct GenericAddressStructure xPM2ControlBlock;
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struct GenericAddressStructure xPMTimerBlock;
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struct GenericAddressStructure xGPE0Block;
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struct GenericAddressStructure xGPE1Block;
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};
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//----------------------------------------------------------------------------//
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void IoInitAcpi(void);
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SDTHeader *IoGetAcpiTable(ulong id);
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SDTHeader_t *IoGetAcpiTable(ulong id);
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//----------------------------------------------------------------------------//
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@ -56,8 +56,9 @@ typedef struct IdtPtr_t IdtPtr_t;
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typedef struct ISRList_t ISRList_t;
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typedef struct ISRFrame_t ISRFrame_t;
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typedef struct RSDPDescriptor RSDPDescriptor;
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typedef struct SDTHeader SDTHeader;
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typedef struct RSDPDescriptor_t RSDPDescriptor_t;
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typedef struct SDTHeader_t SDTHeader_t;
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typedef struct FADT_t FADT_t;
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typedef struct MemoryMap_t MemoryMap_t;
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typedef struct MapEntry_t MapEntry_t;
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@ -61,7 +61,7 @@ static char *SDTChar[N_SDT_TYPES] = {
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};
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// ACPI Tables Directory
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static SDTHeader *SDTDirectory[N_SDT_TYPES] = {0};
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static SDTHeader_t *SDTDirectory[N_SDT_TYPES] = {0};
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//
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// Returns the checksum of the given structure
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@ -81,7 +81,7 @@ static char DoChecksum(const void *ptr, const size_t size,
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//
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// Returns the address of the RSDP
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//
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static inline RSDPDescriptor *IoFindRSDP()
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static inline RSDPDescriptor_t *IoFindRSDP()
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{
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char *rsdp = NULL;
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@ -92,7 +92,7 @@ static inline RSDPDescriptor *IoFindRSDP()
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rsdp++) {
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if (!strncmp(rsdp, "RSD PTR", 6)) {
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return (RSDPDescriptor *)rsdp;
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return (RSDPDescriptor_t *)rsdp;
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}
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}
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@ -102,7 +102,7 @@ static inline RSDPDescriptor *IoFindRSDP()
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rsdp++) {
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if (!strncmp(rsdp, "RSD PTR", 6)) {
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return (RSDPDescriptor *)rsdp;
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return (RSDPDescriptor_t *)rsdp;
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}
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}
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@ -116,12 +116,12 @@ static inline void IoInitRSDP(void)
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{
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char checksum = 1;
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RSDPDescriptor *rsdp = IoFindRSDP();
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RSDPDescriptor_t *rsdp = IoFindRSDP();
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if (!rsdp)
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KeStartPanic("ACPI RSDP not found in memory");
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// Checksum calculation
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checksum = DoChecksum(rsdp, (size_t)sizeof(RSDPDescriptor),
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checksum = DoChecksum(rsdp, (size_t)sizeof(RSDPDescriptor_t),
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(size_t)sizeof(struct RSDPLegacy),
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!rsdp->legacy.revision
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);
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@ -152,7 +152,7 @@ static inline void IoInitRXSDT(void)
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{
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char checksum = 1;
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SDTHeader *rxsdt = SDTDirectory[SDT_RSDT];
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SDTHeader_t *rxsdt = SDTDirectory[SDT_RSDT];
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if (IoACPIVersion == 2) {
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rxsdt = SDTDirectory[SDT_XSDT];
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@ -189,8 +189,8 @@ static inline void IoInitRXSDT(void)
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//
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static inline void IoSearchAcpiTables(void)
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{
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SDTHeader *xrsdt = SDTDirectory[SDT_RSDT];
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SDTHeader *table = NULL;
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SDTHeader_t *xrsdt = SDTDirectory[SDT_RSDT];
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SDTHeader_t *table = NULL;
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uint *curInt = NULL;
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ulong *curLong = NULL;
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register char checksum;
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@ -205,15 +205,16 @@ static inline void IoSearchAcpiTables(void)
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DebugLog("ACPI detected %d entries\n", entries);
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curInt = (uint*)&(xrsdt->sdtTablePtr);
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curLong = (ulong*)&(xrsdt->sdtTablePtr);
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curInt = (uint*)&(xrsdt->sdtEntry);
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curLong = (ulong*)&(xrsdt->sdtEntry);
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// Parsing R/XSDT
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for (int i = 0; i < entries; i++) {
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if (IoACPIVersion == 1)
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table = (SDTHeader *)(ulong)curInt[i];
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table = (SDTHeader_t *)(ulong)curInt[i];
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else
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table = (SDTHeader *)(ulong)curLong[i];
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table = (SDTHeader_t *)(ulong)curLong[i];
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//KernLog("\tACPI RSDT[%d] %p\n", i, table);
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if (MmIsBusyZone(table)) {
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@ -233,8 +234,30 @@ static inline void IoSearchAcpiTables(void)
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}
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}
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}
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}
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// Parsing FADT
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FADT_t *fadt = (FADT_t *)IoGetAcpiTable(SDT_FADT);
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SDTHeader_t *dsdt;
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if (IoACPIVersion == 1) {
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dsdt = (SDTHeader_t *)(ulong)fadt->dsdtAddress;
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} else {
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dsdt = (SDTHeader_t *)(ulong)fadt->xDsdtAddress;
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}
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checksum = DoChecksum(dsdt, (size_t)dsdt->length, 0, 0);
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if (!checksum) {
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if (!strncmp(dsdt->signature, SDTChar[SDT_DSDT], 3)) {
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DebugLog("ACPI System Table %s (OEM %s) length %d [%p]\n",
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SDTChar[SDT_DSDT],
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dsdt->OEMID,
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dsdt->length,
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dsdt
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);
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SDTDirectory[SDT_DSDT] = dsdt;
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}
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}
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}
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// -------------------------------------------------------------------------- //
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@ -275,13 +298,14 @@ void IoInitAcpi(void)
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IoSearchAcpiTables();
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}
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// -------------------------------------------------------------------------- //
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//
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// Returns the addr of the submitted SDT
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//
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// Arg must be a member of the enum in acpi.h
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//
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SDTHeader *IoGetAcpiTable(ulong id)
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SDTHeader_t *IoGetAcpiTable(ulong id)
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{
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return SDTDirectory[id];
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}
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