KernelLand/Modules/Storage/AHCI/ata.h

   1 /*
   2  * Acess2
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * ata.h
   6  * - ATA Definitions
   7  */
   8 #ifndef _AHCI__ATA_H_
   9 #define _AHCI__ATA_H_
  10
  11 enum eATA_Commands
  12 {
  13         ATA_CMD_IDENTIFY_DEVICE = 0xEC,
  14         ATA_CMD_READDMA48       = 0x25,
  15         ATA_CMD_READDMA28       = 0xC8,
  16 };
  17
  18 #define ATA_STATUS_ERR  0x01    // Error encountered
  19 #define ATA_STATUS_DRQ  0x08    // Data Request
  20 #define ATA_STATUS_CDEP 0x10    // Command-dependent
  21 #define ATA_STATUS_DF   0x20    // Device Fault
  22 #define ATA_STATUS_DRDY 0x40    // Device ready
  23 #define ATA_STATUS_BSY  0x80    // Device busy
  24
  25 typedef struct sATA_Identify tATA_Identify;
  26
  27 /**
  28  * \brief Structure returned by the ATA IDENTIFY command
  29  */
  30 struct sATA_Identify
  31 {
  32         Uint16  Flags;          // 1
  33         Uint16  Usused1[9];     // 10
  34         char    SerialNum[20];  // 20
  35         Uint16  Usused2[3];     // 23
  36         char    FirmwareVer[8]; // 27
  37         char    ModelNumber[40];        // 47
  38         Uint16  SectPerInt;     // 48 - Low byte only
  39         Uint16  Unused3;        // 49
  40         Uint16  Capabilities[2];        // 51
  41         Uint16  Unused4[2];     // 53
  42         Uint16  ValidExtData;   // 54
  43         Uint16  Unused5[5];      // 59
  44         Uint16  SizeOfRWMultiple;       // 60
  45         Uint32  Sectors28;      // LBA 28 Sector Count
  46         Uint16  Unused6[100-62];
  47         Uint64  Sectors48;      // LBA 48 Sector Count
  48         Uint16  Unused7[256-104];
  49 } PACKED;
  50
  51 #endif
  52