/** @file
  Header file for AHCI mode of ATA host controller.

  Copyright (c) 2010 - 2020, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __ATA_HC_AHCI_MODE_H__
#define __ATA_HC_AHCI_MODE_H__

#define EFI_AHCI_BAR_INDEX  0x05

#define EFI_AHCI_CAPABILITY_OFFSET  0x0000
#define   EFI_AHCI_CAP_SAM          BIT18
#define   EFI_AHCI_CAP_SSS          BIT27
#define   EFI_AHCI_CAP_S64A         BIT31
#define EFI_AHCI_GHC_OFFSET         0x0004
#define   EFI_AHCI_GHC_RESET        BIT0
#define   EFI_AHCI_GHC_IE           BIT1
#define   EFI_AHCI_GHC_ENABLE       BIT31
#define EFI_AHCI_IS_OFFSET          0x0008
#define EFI_AHCI_PI_OFFSET          0x000C

#define EFI_AHCI_MAX_PORTS  32

#define AHCI_CAPABILITY2_OFFSET  0x0024
#define   AHCI_CAP2_SDS          BIT3
#define   AHCI_CAP2_SADM         BIT4

typedef struct {
  UINT32    Lower32;
  UINT32    Upper32;
} DATA_32;

typedef union {
  DATA_32    Uint32;
  UINT64     Uint64;
} DATA_64;

//
// Refer SATA1.0a spec section 5.2, the Phy detection time should be less than 10ms.
// Add a bit of margin for robustness.
//
#define  EFI_AHCI_BUS_PHY_DETECT_TIMEOUT  15
//
// Refer SATA1.0a spec, the FIS enable time should be less than 500ms.
//
#define  EFI_AHCI_PORT_CMD_FR_CLEAR_TIMEOUT  EFI_TIMER_PERIOD_MILLISECONDS(500)
//
// Refer SATA1.0a spec, the bus reset time should be less than 1s.
//
#define  EFI_AHCI_BUS_RESET_TIMEOUT  EFI_TIMER_PERIOD_SECONDS(1)

#define  EFI_AHCI_ATAPI_DEVICE_SIG     0xEB140000
#define  EFI_AHCI_ATA_DEVICE_SIG       0x00000000
#define  EFI_AHCI_PORT_MULTIPLIER_SIG  0x96690000
#define  EFI_AHCI_ATAPI_SIG_MASK       0xFFFF0000

//
// Each PRDT entry can point to a memory block up to 4M byte
//
#define EFI_AHCI_MAX_DATA_PER_PRDT  0x400000

#define EFI_AHCI_FIS_REGISTER_H2D           0x27         // Register FIS - Host to Device
#define   EFI_AHCI_FIS_REGISTER_H2D_LENGTH  20
#define EFI_AHCI_FIS_REGISTER_D2H           0x34         // Register FIS - Device to Host
#define   EFI_AHCI_FIS_REGISTER_D2H_LENGTH  20
#define EFI_AHCI_FIS_DMA_ACTIVATE           0x39         // DMA Activate FIS - Device to Host
#define   EFI_AHCI_FIS_DMA_ACTIVATE_LENGTH  4
#define EFI_AHCI_FIS_DMA_SETUP              0x41         // DMA Setup FIS - Bi-directional
#define   EFI_AHCI_FIS_DMA_SETUP_LENGTH     28
#define EFI_AHCI_FIS_DATA                   0x46         // Data FIS - Bi-directional
#define EFI_AHCI_FIS_BIST                   0x58         // BIST Activate FIS - Bi-directional
#define   EFI_AHCI_FIS_BIST_LENGTH          12
#define EFI_AHCI_FIS_PIO_SETUP              0x5F         // PIO Setup FIS - Device to Host
#define   EFI_AHCI_FIS_PIO_SETUP_LENGTH     20
#define EFI_AHCI_FIS_SET_DEVICE             0xA1         // Set Device Bits FIS - Device to Host
#define   EFI_AHCI_FIS_SET_DEVICE_LENGTH    8

#define EFI_AHCI_D2H_FIS_OFFSET  0x40
#define EFI_AHCI_DMA_FIS_OFFSET  0x00
#define EFI_AHCI_PIO_FIS_OFFSET  0x20
#define EFI_AHCI_SDB_FIS_OFFSET  0x58
#define EFI_AHCI_FIS_TYPE_MASK   0xFF
#define EFI_AHCI_U_FIS_OFFSET    0x60

//
// Port register
//
#define EFI_AHCI_PORT_START                  0x0100
#define EFI_AHCI_PORT_REG_WIDTH              0x0080
#define EFI_AHCI_PORT_CLB                    0x0000
#define EFI_AHCI_PORT_CLBU                   0x0004
#define EFI_AHCI_PORT_FB                     0x0008
#define EFI_AHCI_PORT_FBU                    0x000C
#define EFI_AHCI_PORT_IS                     0x0010
#define   EFI_AHCI_PORT_IS_DHRS              BIT0
#define   EFI_AHCI_PORT_IS_PSS               BIT1
#define   EFI_AHCI_PORT_IS_DSS               BIT2
#define   EFI_AHCI_PORT_IS_SDBS              BIT3
#define   EFI_AHCI_PORT_IS_UFS               BIT4
#define   EFI_AHCI_PORT_IS_DPS               BIT5
#define   EFI_AHCI_PORT_IS_PCS               BIT6
#define   EFI_AHCI_PORT_IS_DIS               BIT7
#define   EFI_AHCI_PORT_IS_PRCS              BIT22
#define   EFI_AHCI_PORT_IS_IPMS              BIT23
#define   EFI_AHCI_PORT_IS_OFS               BIT24
#define   EFI_AHCI_PORT_IS_INFS              BIT26
#define   EFI_AHCI_PORT_IS_IFS               BIT27
#define   EFI_AHCI_PORT_IS_HBDS              BIT28
#define   EFI_AHCI_PORT_IS_HBFS              BIT29
#define   EFI_AHCI_PORT_IS_TFES              BIT30
#define   EFI_AHCI_PORT_IS_CPDS              BIT31
#define   EFI_AHCI_PORT_IS_CLEAR             0xFFFFFFFF
#define   EFI_AHCI_PORT_IS_FIS_CLEAR         0x0000000F
#define   EFI_AHCI_PORT_IS_ERROR_MASK        (EFI_AHCI_PORT_IS_INFS | EFI_AHCI_PORT_IS_IFS | EFI_AHCI_PORT_IS_HBDS | EFI_AHCI_PORT_IS_HBFS | EFI_AHCI_PORT_IS_TFES)
#define   EFI_AHCI_PORT_IS_FATAL_ERROR_MASK  (EFI_AHCI_PORT_IS_IFS | EFI_AHCI_PORT_IS_HBDS | EFI_AHCI_PORT_IS_HBFS | EFI_AHCI_PORT_IS_TFES)

#define EFI_AHCI_PORT_IE                  0x0014
#define EFI_AHCI_PORT_CMD                 0x0018
#define   EFI_AHCI_PORT_CMD_ST_MASK       0xFFFFFFFE
#define   EFI_AHCI_PORT_CMD_ST            BIT0
#define   EFI_AHCI_PORT_CMD_SUD           BIT1
#define   EFI_AHCI_PORT_CMD_POD           BIT2
#define   EFI_AHCI_PORT_CMD_CLO           BIT3
#define   EFI_AHCI_PORT_CMD_FRE           BIT4
#define   EFI_AHCI_PORT_CMD_CCS_MASK      (BIT8 | BIT9 | BIT10 | BIT11 | BIT12)
#define   EFI_AHCI_PORT_CMD_CCS_SHIFT     8
#define   EFI_AHCI_PORT_CMD_FR            BIT14
#define   EFI_AHCI_PORT_CMD_CR            BIT15
#define   EFI_AHCI_PORT_CMD_MASK          ~(EFI_AHCI_PORT_CMD_ST | EFI_AHCI_PORT_CMD_FRE | EFI_AHCI_PORT_CMD_COL)
#define   EFI_AHCI_PORT_CMD_PMA           BIT17
#define   EFI_AHCI_PORT_CMD_HPCP          BIT18
#define   EFI_AHCI_PORT_CMD_MPSP          BIT19
#define   EFI_AHCI_PORT_CMD_CPD           BIT20
#define   EFI_AHCI_PORT_CMD_ESP           BIT21
#define   EFI_AHCI_PORT_CMD_ATAPI         BIT24
#define   EFI_AHCI_PORT_CMD_DLAE          BIT25
#define   EFI_AHCI_PORT_CMD_ALPE          BIT26
#define   EFI_AHCI_PORT_CMD_ASP           BIT27
#define   EFI_AHCI_PORT_CMD_ICC_MASK      (BIT28 | BIT29 | BIT30 | BIT31)
#define   EFI_AHCI_PORT_CMD_ACTIVE        (1 << 28 )
#define EFI_AHCI_PORT_TFD                 0x0020
#define   EFI_AHCI_PORT_TFD_MASK          (BIT7 | BIT3 | BIT0)
#define   EFI_AHCI_PORT_TFD_BSY           BIT7
#define   EFI_AHCI_PORT_TFD_DRQ           BIT3
#define   EFI_AHCI_PORT_TFD_ERR           BIT0
#define   EFI_AHCI_PORT_TFD_ERR_MASK      0x00FF00 // ERROR field is specified by ATA/ATAPI Command Set specification
#define   EFI_AHCI_PORT_TFD_ERR_INT_CRC   BIT15
#define EFI_AHCI_PORT_SIG                 0x0024
#define EFI_AHCI_PORT_SSTS                0x0028
#define   EFI_AHCI_PORT_SSTS_DET_MASK     0x000F
#define   EFI_AHCI_PORT_SSTS_DET          0x0001
#define   EFI_AHCI_PORT_SSTS_DET_PCE      0x0003
#define   EFI_AHCI_PORT_SSTS_SPD_MASK     0x00F0
#define EFI_AHCI_PORT_SCTL                0x002C
#define   EFI_AHCI_PORT_SCTL_DET_MASK     0x000F
#define   EFI_AHCI_PORT_SCTL_MASK         (~EFI_AHCI_PORT_SCTL_DET_MASK)
#define   EFI_AHCI_PORT_SCTL_DET_INIT     0x0001
#define   EFI_AHCI_PORT_SCTL_DET_PHYCOMM  0x0003
#define   EFI_AHCI_PORT_SCTL_SPD_MASK     0x00F0
#define   EFI_AHCI_PORT_SCTL_IPM_MASK     0x0F00
#define   EFI_AHCI_PORT_SCTL_IPM_INIT     0x0300
#define   EFI_AHCI_PORT_SCTL_IPM_PSD      0x0100
#define   EFI_AHCI_PORT_SCTL_IPM_SSD      0x0200
#define EFI_AHCI_PORT_SERR                0x0030
#define   EFI_AHCI_PORT_SERR_RDIE         BIT0
#define   EFI_AHCI_PORT_SERR_RCE          BIT1
#define   EFI_AHCI_PORT_SERR_TDIE         BIT8
#define   EFI_AHCI_PORT_SERR_PCDIE        BIT9
#define   EFI_AHCI_PORT_SERR_PE           BIT10
#define   EFI_AHCI_PORT_SERR_IE           BIT11
#define   EFI_AHCI_PORT_SERR_PRC          BIT16
#define   EFI_AHCI_PORT_SERR_PIE          BIT17
#define   EFI_AHCI_PORT_SERR_CW           BIT18
#define   EFI_AHCI_PORT_SERR_BDE          BIT19
#define   EFI_AHCI_PORT_SERR_DE           BIT20
#define   EFI_AHCI_PORT_SERR_CRCE         BIT21
#define   EFI_AHCI_PORT_SERR_HE           BIT22
#define   EFI_AHCI_PORT_SERR_LSE          BIT23
#define   EFI_AHCI_PORT_SERR_TSTE         BIT24
#define   EFI_AHCI_PORT_SERR_UFT          BIT25
#define   EFI_AHCI_PORT_SERR_EX           BIT26
#define   EFI_AHCI_PORT_ERR_CLEAR         0xFFFFFFFF
#define EFI_AHCI_PORT_SACT                0x0034
#define EFI_AHCI_PORT_CI                  0x0038
#define EFI_AHCI_PORT_SNTF                0x003C
#define AHCI_PORT_DEVSLP                  0x0044
#define   AHCI_PORT_DEVSLP_ADSE           BIT0
#define   AHCI_PORT_DEVSLP_DSP            BIT1
#define   AHCI_PORT_DEVSLP_DETO_MASK      0x000003FC
#define   AHCI_PORT_DEVSLP_MDAT_MASK      0x00007C00
#define   AHCI_PORT_DEVSLP_DITO_MASK      0x01FF8000
#define   AHCI_PORT_DEVSLP_DM_MASK        0x1E000000

#define AHCI_COMMAND_RETRIES  (PcdGet32 (PcdAhciCommandRetryCount))

#pragma pack(1)
//
// Command List structure includes total 32 entries.
// The entry data structure is listed at the following.
//
typedef struct {
  UINT32    AhciCmdCfl   : 5; // Command FIS Length
  UINT32    AhciCmdA     : 1; // ATAPI
  UINT32    AhciCmdW     : 1; // Write
  UINT32    AhciCmdP     : 1; // Prefetchable
  UINT32    AhciCmdR     : 1; // Reset
  UINT32    AhciCmdB     : 1; // BIST
  UINT32    AhciCmdC     : 1; // Clear Busy upon R_OK
  UINT32    AhciCmdRsvd  : 1;
  UINT32    AhciCmdPmp   : 4;  // Port Multiplier Port
  UINT32    AhciCmdPrdtl : 16; // Physical Region Descriptor Table Length
  UINT32    AhciCmdPrdbc;      // Physical Region Descriptor Byte Count
  UINT32    AhciCmdCtba;       // Command Table Descriptor Base Address
  UINT32    AhciCmdCtbau;      // Command Table Descriptor Base Address Upper 32-BITs
  UINT32    AhciCmdRsvd1[4];
} EFI_AHCI_COMMAND_LIST;

//
// This is a software constructed FIS.
// For data transfer operations, this is the H2D Register FIS format as
// specified in the Serial ATA Revision 2.6 specification.
//
typedef struct {
  UINT8    AhciCFisType;
  UINT8    AhciCFisPmNum  : 4;
  UINT8    AhciCFisRsvd   : 1;
  UINT8    AhciCFisRsvd1  : 1;
  UINT8    AhciCFisRsvd2  : 1;
  UINT8    AhciCFisCmdInd : 1;
  UINT8    AhciCFisCmd;
  UINT8    AhciCFisFeature;
  UINT8    AhciCFisSecNum;
  UINT8    AhciCFisClyLow;
  UINT8    AhciCFisClyHigh;
  UINT8    AhciCFisDevHead;
  UINT8    AhciCFisSecNumExp;
  UINT8    AhciCFisClyLowExp;
  UINT8    AhciCFisClyHighExp;
  UINT8    AhciCFisFeatureExp;
  UINT8    AhciCFisSecCount;
  UINT8    AhciCFisSecCountExp;
  UINT8    AhciCFisRsvd3;
  UINT8    AhciCFisControl;
  UINT8    AhciCFisRsvd4[4];
  UINT8    AhciCFisRsvd5[44];
} EFI_AHCI_COMMAND_FIS;

typedef enum {
  SataFisD2H = 0,
  SataFisPioSetup,
  SataFisDmaSetup
} SATA_FIS_TYPE;

//
// ACMD: ATAPI command (12 or 16 bytes)
//
typedef struct {
  UINT8    AtapiCmd[0x10];
} EFI_AHCI_ATAPI_COMMAND;

//
// Physical Region Descriptor Table includes up to 65535 entries
// The entry data structure is listed at the following.
// the actual entry number comes from the PRDTL field in the command
// list entry for this command slot.
//
typedef struct {
  UINT32    AhciPrdtDba;      // Data Base Address
  UINT32    AhciPrdtDbau;     // Data Base Address Upper 32-BITs
  UINT32    AhciPrdtRsvd;
  UINT32    AhciPrdtDbc   : 22; // Data Byte Count
  UINT32    AhciPrdtRsvd1 : 9;
  UINT32    AhciPrdtIoc   : 1; // Interrupt on Completion
} EFI_AHCI_COMMAND_PRDT;

//
// Command table data structure which is pointed to by the entry in the command list
//
typedef struct {
  EFI_AHCI_COMMAND_FIS      CommandFis;       // A software constructed FIS.
  EFI_AHCI_ATAPI_COMMAND    AtapiCmd;         // 12 or 16 bytes ATAPI cmd.
  UINT8                     Reserved[0x30];
  EFI_AHCI_COMMAND_PRDT     PrdtTable[65535];     // The scatter/gather list for data transfer
} EFI_AHCI_COMMAND_TABLE;

//
// Received FIS structure
//
typedef struct {
  UINT8     AhciDmaSetupFis[0x1C];        // Dma Setup Fis: offset 0x00
  UINT8     AhciDmaSetupFisRsvd[0x04];
  UINT8     AhciPioSetupFis[0x14];        // Pio Setup Fis: offset 0x20
  UINT8     AhciPioSetupFisRsvd[0x0C];
  UINT8     AhciD2HRegisterFis[0x14];     // D2H Register Fis: offset 0x40
  UINT8     AhciD2HRegisterFisRsvd[0x04];
  UINT64    AhciSetDeviceBitsFis;         // Set Device Bits Fix: offset 0x58
  UINT8     AhciUnknownFis[0x40];         // Unknown Fis: offset 0x60
  UINT8     AhciUnknownFisRsvd[0x60];
} EFI_AHCI_RECEIVED_FIS;

typedef struct {
  UINT8     Madt        : 5;
  UINT8     Reserved_5  : 3;
  UINT8     Deto;
  UINT16    Reserved_16;
  UINT32    Reserved_32 : 31;
  UINT32    Supported   : 1;
} DEVSLP_TIMING_VARIABLES;

#pragma pack()

typedef struct {
  EFI_AHCI_RECEIVED_FIS     *AhciRFis;
  EFI_AHCI_COMMAND_LIST     *AhciCmdList;
  EFI_AHCI_COMMAND_TABLE    *AhciCommandTable;
  EFI_AHCI_RECEIVED_FIS     *AhciRFisPciAddr;
  EFI_AHCI_COMMAND_LIST     *AhciCmdListPciAddr;
  EFI_AHCI_COMMAND_TABLE    *AhciCommandTablePciAddr;
  UINT64                    MaxCommandListSize;
  UINT64                    MaxCommandTableSize;
  UINT64                    MaxReceiveFisSize;
  VOID                      *MapRFis;
  VOID                      *MapCmdList;
  VOID                      *MapCommandTable;
} EFI_AHCI_REGISTERS;

/**
  This function is used to send out ATAPI commands conforms to the Packet Command
  with PIO Protocol.

  @param PciIo              The PCI IO protocol instance.
  @param AhciRegisters      The pointer to the EFI_AHCI_REGISTERS.
  @param Port               The number of port.
  @param PortMultiplier     The number of port multiplier.
  @param Packet             A pointer to EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET structure.

  @retval EFI_SUCCESS       send out the ATAPI packet command successfully
                            and device sends data successfully.
  @retval EFI_DEVICE_ERROR  the device failed to send data.

**/
EFI_STATUS
EFIAPI
AhciPacketCommandExecute (
  IN  EFI_PCI_IO_PROTOCOL                         *PciIo,
  IN  EFI_AHCI_REGISTERS                          *AhciRegisters,
  IN  UINT8                                       Port,
  IN  UINT8                                       PortMultiplier,
  IN  EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET  *Packet
  );

/**
  Start command for give slot on specific port.

  @param  PciIo              The PCI IO protocol instance.
  @param  Port               The number of port.
  @param  CommandSlot        The number of CommandSlot.
  @param  Timeout            The timeout value of start, uses 100ns as a unit.

  @retval EFI_DEVICE_ERROR   The command start unsuccessfully.
  @retval EFI_TIMEOUT        The operation is time out.
  @retval EFI_SUCCESS        The command start successfully.

**/
EFI_STATUS
EFIAPI
AhciStartCommand (
  IN  EFI_PCI_IO_PROTOCOL  *PciIo,
  IN  UINT8                Port,
  IN  UINT8                CommandSlot,
  IN  UINT64               Timeout
  );

/**
  Stop command running for giving port

  @param  PciIo              The PCI IO protocol instance.
  @param  Port               The number of port.
  @param  Timeout            The timeout value of stop, uses 100ns as a unit.

  @retval EFI_DEVICE_ERROR   The command stop unsuccessfully.
  @retval EFI_TIMEOUT        The operation is time out.
  @retval EFI_SUCCESS        The command stop successfully.

**/
EFI_STATUS
EFIAPI
AhciStopCommand (
  IN  EFI_PCI_IO_PROTOCOL  *PciIo,
  IN  UINT8                Port,
  IN  UINT64               Timeout
  );

#endif