489 lines
14 KiB
C
489 lines
14 KiB
C
#include "ata.h"
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#include "io.h"
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#include "kernel.h"
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#include "klibc.h"
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#include "kthread.h"
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// from
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// https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/ata/ns-ata-_identify_device_data
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struct _IDENTIFY_DEVICE_DATA {
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struct {
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uint16_t Reserved1 : 1;
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uint16_t Retired3 : 1;
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uint16_t ResponseIncomplete : 1;
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uint16_t Retired2 : 3;
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uint16_t FixedDevice : 1;
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uint16_t RemovableMedia : 1;
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uint16_t Retired1 : 7;
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uint16_t DeviceType : 1;
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} GeneralConfiguration;
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uint16_t NumCylinders;
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uint16_t SpecificConfiguration;
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uint16_t NumHeads;
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uint16_t Retired1[2];
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uint16_t NumSectorsPerTrack;
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uint16_t VendorUnique1[3];
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uint8_t SerialNumber[20];
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uint16_t Retired2[2];
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uint16_t Obsolete1;
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uint8_t FirmwareRevision[8];
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uint8_t ModelNumber[40];
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uint8_t MaximumBlockTransfer;
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uint8_t VendorUnique2;
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struct {
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uint16_t FeatureSupported : 1;
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uint16_t Reserved : 15;
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} TrustedComputing;
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struct {
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uint8_t CurrentLongPhysicalSectorAlignment : 2;
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uint8_t ReservedByte49 : 6;
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uint8_t DmaSupported : 1;
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uint8_t LbaSupported : 1;
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uint8_t IordyDisable : 1;
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uint8_t IordySupported : 1;
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uint8_t Reserved1 : 1;
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uint8_t StandybyTimerSupport : 1;
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uint8_t Reserved2 : 2;
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uint16_t ReservedWord50;
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} Capabilities;
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uint16_t ObsoleteWords51[2];
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uint16_t TranslationFieldsValid : 3;
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uint16_t Reserved3 : 5;
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uint16_t FreeFallControlSensitivity : 8;
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uint16_t NumberOfCurrentCylinders;
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uint16_t NumberOfCurrentHeads;
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uint16_t CurrentSectorsPerTrack;
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uint32_t CurrentSectorCapacity;
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uint8_t CurrentMultiSectorSetting;
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uint8_t MultiSectorSettingValid : 1;
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uint8_t ReservedByte59 : 3;
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uint8_t SanitizeFeatureSupported : 1;
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uint8_t CryptoScrambleExtCommandSupported : 1;
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uint8_t OverwriteExtCommandSupported : 1;
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uint8_t BlockEraseExtCommandSupported : 1;
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uint32_t UserAddressableSectors;
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uint16_t ObsoleteWord62;
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uint16_t MultiWordDMASupport : 8;
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uint16_t MultiWordDMAActive : 8;
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uint16_t AdvancedPIOModes : 8;
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uint16_t ReservedByte64 : 8;
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uint16_t MinimumMWXferCycleTime;
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uint16_t RecommendedMWXferCycleTime;
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uint16_t MinimumPIOCycleTime;
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uint16_t MinimumPIOCycleTimeIORDY;
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struct {
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uint16_t ZonedCapabilities : 2;
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uint16_t NonVolatileWriteCache : 1;
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uint16_t ExtendedUserAddressableSectorsSupported : 1;
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uint16_t DeviceEncryptsAllUserData : 1;
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uint16_t ReadZeroAfterTrimSupported : 1;
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uint16_t Optional28BitCommandsSupported : 1;
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uint16_t IEEE1667 : 1;
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uint16_t DownloadMicrocodeDmaSupported : 1;
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uint16_t SetMaxSetPasswordUnlockDmaSupported : 1;
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uint16_t WriteBufferDmaSupported : 1;
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uint16_t ReadBufferDmaSupported : 1;
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uint16_t DeviceConfigIdentifySetDmaSupported : 1;
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uint16_t LPSAERCSupported : 1;
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uint16_t DeterministicReadAfterTrimSupported : 1;
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uint16_t CFastSpecSupported : 1;
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} AdditionalSupported;
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uint16_t ReservedWords70[5];
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uint16_t QueueDepth : 5;
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uint16_t ReservedWord75 : 11;
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struct {
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uint16_t Reserved0 : 1;
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uint16_t SataGen1 : 1;
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uint16_t SataGen2 : 1;
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uint16_t SataGen3 : 1;
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uint16_t Reserved1 : 4;
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uint16_t NCQ : 1;
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uint16_t HIPM : 1;
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uint16_t PhyEvents : 1;
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uint16_t NcqUnload : 1;
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uint16_t NcqPriority : 1;
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uint16_t HostAutoPS : 1;
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uint16_t DeviceAutoPS : 1;
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uint16_t ReadLogDMA : 1;
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uint16_t Reserved2 : 1;
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uint16_t CurrentSpeed : 3;
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uint16_t NcqStreaming : 1;
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uint16_t NcqQueueMgmt : 1;
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uint16_t NcqReceiveSend : 1;
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uint16_t DEVSLPtoReducedPwrState : 1;
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uint16_t Reserved3 : 8;
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} SerialAtaCapabilities;
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struct {
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uint16_t Reserved0 : 1;
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uint16_t NonZeroOffsets : 1;
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uint16_t DmaSetupAutoActivate : 1;
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uint16_t DIPM : 1;
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uint16_t InOrderData : 1;
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uint16_t HardwareFeatureControl : 1;
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uint16_t SoftwareSettingsPreservation : 1;
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uint16_t NCQAutosense : 1;
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uint16_t DEVSLP : 1;
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uint16_t HybridInformation : 1;
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uint16_t Reserved1 : 6;
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} SerialAtaFeaturesSupported;
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struct {
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uint16_t Reserved0 : 1;
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uint16_t NonZeroOffsets : 1;
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uint16_t DmaSetupAutoActivate : 1;
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uint16_t DIPM : 1;
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uint16_t InOrderData : 1;
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uint16_t HardwareFeatureControl : 1;
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uint16_t SoftwareSettingsPreservation : 1;
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uint16_t DeviceAutoPS : 1;
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uint16_t DEVSLP : 1;
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uint16_t HybridInformation : 1;
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uint16_t Reserved1 : 6;
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} SerialAtaFeaturesEnabled;
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uint16_t MajorRevision;
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uint16_t MinorRevision;
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struct {
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uint16_t SmartCommands : 1;
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uint16_t SecurityMode : 1;
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uint16_t RemovableMediaFeature : 1;
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uint16_t PowerManagement : 1;
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uint16_t Reserved1 : 1;
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uint16_t WriteCache : 1;
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uint16_t LookAhead : 1;
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uint16_t ReleaseInterrupt : 1;
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uint16_t ServiceInterrupt : 1;
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uint16_t DeviceReset : 1;
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uint16_t HostProtectedArea : 1;
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uint16_t Obsolete1 : 1;
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uint16_t WriteBuffer : 1;
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uint16_t ReadBuffer : 1;
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uint16_t Nop : 1;
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uint16_t Obsolete2 : 1;
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uint16_t DownloadMicrocode : 1;
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uint16_t DmaQueued : 1;
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uint16_t Cfa : 1;
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uint16_t AdvancedPm : 1;
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uint16_t Msn : 1;
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uint16_t PowerUpInStandby : 1;
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uint16_t ManualPowerUp : 1;
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uint16_t Reserved2 : 1;
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uint16_t SetMax : 1;
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uint16_t Acoustics : 1;
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uint16_t BigLba : 1;
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uint16_t DeviceConfigOverlay : 1;
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uint16_t FlushCache : 1;
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uint16_t FlushCacheExt : 1;
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uint16_t WordValid83 : 2;
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uint16_t SmartErrorLog : 1;
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uint16_t SmartSelfTest : 1;
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uint16_t MediaSerialNumber : 1;
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uint16_t MediaCardPassThrough : 1;
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uint16_t StreamingFeature : 1;
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uint16_t GpLogging : 1;
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uint16_t WriteFua : 1;
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uint16_t WriteQueuedFua : 1;
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uint16_t WWN64Bit : 1;
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uint16_t URGReadStream : 1;
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uint16_t URGWriteStream : 1;
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uint16_t ReservedForTechReport : 2;
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uint16_t IdleWithUnloadFeature : 1;
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uint16_t WordValid : 2;
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} CommandSetSupport;
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struct {
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uint16_t SmartCommands : 1;
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uint16_t SecurityMode : 1;
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uint16_t RemovableMediaFeature : 1;
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uint16_t PowerManagement : 1;
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uint16_t Reserved1 : 1;
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uint16_t WriteCache : 1;
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uint16_t LookAhead : 1;
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uint16_t ReleaseInterrupt : 1;
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uint16_t ServiceInterrupt : 1;
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uint16_t DeviceReset : 1;
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uint16_t HostProtectedArea : 1;
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uint16_t Obsolete1 : 1;
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uint16_t WriteBuffer : 1;
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uint16_t ReadBuffer : 1;
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uint16_t Nop : 1;
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uint16_t Obsolete2 : 1;
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uint16_t DownloadMicrocode : 1;
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uint16_t DmaQueued : 1;
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uint16_t Cfa : 1;
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uint16_t AdvancedPm : 1;
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uint16_t Msn : 1;
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uint16_t PowerUpInStandby : 1;
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uint16_t ManualPowerUp : 1;
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uint16_t Reserved2 : 1;
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uint16_t SetMax : 1;
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uint16_t Acoustics : 1;
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uint16_t BigLba : 1;
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uint16_t DeviceConfigOverlay : 1;
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uint16_t FlushCache : 1;
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uint16_t FlushCacheExt : 1;
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uint16_t Resrved3 : 1;
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uint16_t Words119_120Valid : 1;
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uint16_t SmartErrorLog : 1;
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uint16_t SmartSelfTest : 1;
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uint16_t MediaSerialNumber : 1;
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uint16_t MediaCardPassThrough : 1;
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uint16_t StreamingFeature : 1;
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uint16_t GpLogging : 1;
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uint16_t WriteFua : 1;
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uint16_t WriteQueuedFua : 1;
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uint16_t WWN64Bit : 1;
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uint16_t URGReadStream : 1;
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uint16_t URGWriteStream : 1;
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uint16_t ReservedForTechReport : 2;
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uint16_t IdleWithUnloadFeature : 1;
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uint16_t Reserved4 : 2;
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} CommandSetActive;
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uint16_t UltraDMASupport : 8;
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uint16_t UltraDMAActive : 8;
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struct {
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uint16_t TimeRequired : 15;
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uint16_t ExtendedTimeReported : 1;
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} NormalSecurityEraseUnit;
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struct {
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uint16_t TimeRequired : 15;
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uint16_t ExtendedTimeReported : 1;
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} EnhancedSecurityEraseUnit;
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uint16_t CurrentAPMLevel : 8;
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uint16_t ReservedWord91 : 8;
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uint16_t MasterPasswordID;
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uint16_t HardwareResetResult;
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uint16_t CurrentAcousticValue : 8;
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uint16_t RecommendedAcousticValue : 8;
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uint16_t StreamMinRequestSize;
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uint16_t StreamingTransferTimeDMA;
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uint16_t StreamingAccessLatencyDMAPIO;
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uint32_t StreamingPerfGranularity;
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uint32_t Max48BitLBA[2];
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uint16_t StreamingTransferTime;
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uint16_t DsmCap;
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struct {
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uint16_t LogicalSectorsPerPhysicalSector : 4;
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uint16_t Reserved0 : 8;
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uint16_t LogicalSectorLongerThan256Words : 1;
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uint16_t MultipleLogicalSectorsPerPhysicalSector : 1;
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uint16_t Reserved1 : 2;
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} PhysicalLogicalSectorSize;
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uint16_t InterSeekDelay;
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uint16_t WorldWideName[4];
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uint16_t ReservedForWorldWideName128[4];
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uint16_t ReservedForTlcTechnicalReport;
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uint16_t WordsPerLogicalSector[2];
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struct {
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uint16_t ReservedForDrqTechnicalReport : 1;
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uint16_t WriteReadVerify : 1;
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uint16_t WriteUncorrectableExt : 1;
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uint16_t ReadWriteLogDmaExt : 1;
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uint16_t DownloadMicrocodeMode3 : 1;
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uint16_t FreefallControl : 1;
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uint16_t SenseDataReporting : 1;
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uint16_t ExtendedPowerConditions : 1;
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uint16_t Reserved0 : 6;
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uint16_t WordValid : 2;
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} CommandSetSupportExt;
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struct {
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uint16_t ReservedForDrqTechnicalReport : 1;
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uint16_t WriteReadVerify : 1;
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uint16_t WriteUncorrectableExt : 1;
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uint16_t ReadWriteLogDmaExt : 1;
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uint16_t DownloadMicrocodeMode3 : 1;
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uint16_t FreefallControl : 1;
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uint16_t SenseDataReporting : 1;
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uint16_t ExtendedPowerConditions : 1;
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uint16_t Reserved0 : 6;
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uint16_t Reserved1 : 2;
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} CommandSetActiveExt;
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uint16_t ReservedForExpandedSupportandActive[6];
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uint16_t MsnSupport : 2;
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uint16_t ReservedWord127 : 14;
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struct {
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uint16_t SecuritySupported : 1;
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uint16_t SecurityEnabled : 1;
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uint16_t SecurityLocked : 1;
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uint16_t SecurityFrozen : 1;
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uint16_t SecurityCountExpired : 1;
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uint16_t EnhancedSecurityEraseSupported : 1;
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uint16_t Reserved0 : 2;
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uint16_t SecurityLevel : 1;
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uint16_t Reserved1 : 7;
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} SecurityStatus;
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uint16_t ReservedWord129[31];
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struct {
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uint16_t MaximumCurrentInMA : 12;
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uint16_t CfaPowerMode1Disabled : 1;
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uint16_t CfaPowerMode1Required : 1;
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uint16_t Reserved0 : 1;
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uint16_t Word160Supported : 1;
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} CfaPowerMode1;
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uint16_t ReservedForCfaWord161[7];
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uint16_t NominalFormFactor : 4;
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uint16_t ReservedWord168 : 12;
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struct {
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uint16_t SupportsTrim : 1;
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uint16_t Reserved0 : 15;
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} DataSetManagementFeature;
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uint16_t AdditionalProductID[4];
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uint16_t ReservedForCfaWord174[2];
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uint16_t CurrentMediaSerialNumber[30];
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struct {
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uint16_t Supported : 1;
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uint16_t Reserved0 : 1;
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uint16_t WriteSameSuported : 1;
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uint16_t ErrorRecoveryControlSupported : 1;
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uint16_t FeatureControlSuported : 1;
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uint16_t DataTablesSuported : 1;
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uint16_t Reserved1 : 6;
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uint16_t VendorSpecific : 4;
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} SCTCommandTransport;
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uint16_t ReservedWord207[2];
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struct {
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uint16_t AlignmentOfLogicalWithinPhysical : 14;
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uint16_t Word209Supported : 1;
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uint16_t Reserved0 : 1;
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} BlockAlignment;
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uint16_t WriteReadVerifySectorCountMode3Only[2];
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uint16_t WriteReadVerifySectorCountMode2Only[2];
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struct {
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uint16_t NVCachePowerModeEnabled : 1;
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uint16_t Reserved0 : 3;
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uint16_t NVCacheFeatureSetEnabled : 1;
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uint16_t Reserved1 : 3;
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uint16_t NVCachePowerModeVersion : 4;
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uint16_t NVCacheFeatureSetVersion : 4;
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} NVCacheCapabilities;
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uint16_t NVCacheSizeLSW;
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uint16_t NVCacheSizeMSW;
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uint16_t NominalMediaRotationRate;
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uint16_t ReservedWord218;
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struct {
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uint8_t NVCacheEstimatedTimeToSpinUpInSeconds;
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uint8_t Reserved;
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} NVCacheOptions;
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uint16_t WriteReadVerifySectorCountMode : 8;
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uint16_t ReservedWord220 : 8;
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uint16_t ReservedWord221;
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struct {
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uint16_t MajorVersion : 12;
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uint16_t TransportType : 4;
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} TransportMajorVersion;
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uint16_t TransportMinorVersion;
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uint16_t ReservedWord224[6];
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uint32_t ExtendedNumberOfUserAddressableSectors[2];
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uint16_t MinBlocksPerDownloadMicrocodeMode03;
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uint16_t MaxBlocksPerDownloadMicrocodeMode03;
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uint16_t ReservedWord236[19];
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uint16_t Signature : 8;
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uint16_t CheckSum : 8;
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} __attribute__((packed));
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static struct ata_controller controllers[MAX_ATA_CONTROLLER] = {{
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.id = 0,
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.base = 0x1F0,
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.dev_ctl = 0x3F6,
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.present = 0,
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},
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{
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.id = 1,
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.base = 0x170,
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.dev_ctl = 0x376,
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.present = 0,
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}};
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int ATADetectDevice(struct ata_device *dev)
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{
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struct ata_controller *ctl = dev->ctl;
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outb(ctl->base + ATA_PIO_DRIVE, 0xA0 | dev->isSlave << 4);
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unsigned st = inb(ctl->base + ATA_PIO_STATUS);
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if (st & ATA_PIO_STATUS_DRIVE_BUSY)
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goto no_disk;
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unsigned cl = inb(ctl->base + ATA_PIO_LBAMID); /* get the "signature bytes" */
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unsigned ch = inb(ctl->base + ATA_PIO_LBAHI);
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/* differentiate ATA, ATAPI, SATA and SATAPI */
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if (cl == 0x14 && ch == 0xEB) {
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return ATA_DEV_PATAPI;
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}
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if (cl == 0x69 && ch == 0x96) {
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return ATA_DEV_SATAPI;
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}
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if (cl == 0 && ch == 0) {
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return ATA_DEV_PATA;
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}
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if (cl == 0x3c && ch == 0xc3) {
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return ATA_DEV_SATA;
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}
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no_disk:
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return ATA_DEV_UNKNOWN;
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}
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int ATAGetDeviceInfo(struct ata_device *dev)
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{
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int status;
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int16_t buffer[256];
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struct ata_controller *ctl = dev->ctl;
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struct _IDENTIFY_DEVICE_DATA *deviceInfo;
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outb(ctl->base + ATA_PIO_DRIVE, 0xA0 | dev->isSlave << 4);
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outb(ctl->base + ATA_PIO_CMD, ATA_PIO_CMD_IDENTIFY);
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/* Wait for command completion (wait while busy bit is set) */
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for (int timeout = 0; timeout < 30000; timeout++) {
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status = inb(ctl->base + ATA_PIO_STATUS);
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if (!(status & ATA_PIO_STATUS_DRIVE_BUSY))
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break;
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}
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/* DRQ bit indicates that data is ready to be read. If it is not set
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after an IDENTIFY command, there is a problem */
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if (!(status & ATA_PIO_STATUS_DRQ)) {
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return -1;
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}
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/* Read data from the controller buffer to a temporary buffer */
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for (int i = 0; i < 256; i++)
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buffer[i] = inw(ctl->base + ATA_PIO_DATA);
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deviceInfo = (struct _IDENTIFY_DEVICE_DATA *)buffer;
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dev->heads = deviceInfo->NumHeads;
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dev->cyls = deviceInfo->NumCylinders;
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dev->sectors = deviceInfo->NumSectorsPerTrack;
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printf("Disk Detected[%d][%d]: %d Ko\n", ctl->id, dev->id,
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(dev->heads * dev->cyls * dev->sectors * DISK_SECTOR_SIZE) / 1024);
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return 0;
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}
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int ATADetectController(struct ata_controller *controller)
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{
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controller->devices[0].id = 0;
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controller->devices[0].isSlave = 0;
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controller->devices[0].ctl = controller;
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controller->devices[0].type = ATADetectDevice(&controllers->devices[0]);
|
|
|
|
if (controller->devices[0].type == ATA_DEV_PATA ||
|
|
controller->devices[0].type == ATA_DEV_SATA) {
|
|
ATAGetDeviceInfo(&controller->devices[0]);
|
|
}
|
|
|
|
controller->devices[1].id = 1;
|
|
controller->devices[1].isSlave = 1;
|
|
controller->devices[1].ctl = controller;
|
|
controller->devices[1].type = ATADetectDevice(&controllers->devices[1]);
|
|
|
|
if (controller->devices[1].type == ATA_DEV_PATA ||
|
|
controller->devices[1].type == ATA_DEV_SATA) {
|
|
ATAGetDeviceInfo(&controller->devices[1]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ATAInit()
|
|
{
|
|
for (uint i = 0; i < MAX_ATA_CONTROLLER; i++) {
|
|
ATADetectController(&controllers[i]);
|
|
}
|
|
return 0;
|
|
}
|