#include <drv_pci.h>
#include <tpl_drv_common.h>
#include <tpl_drv_disk.h>
+#include "common.h"
// --- Flags ---
#define START_BEFORE_CMD 0
-// === CONSTANTS ===
-#define MAX_ATA_DISKS 4
-#define SECTOR_SIZE 512
-#define MAX_DMA_SECTORS (0x1000 / SECTOR_SIZE)
-
-#define IDE_PRI_BASE 0x1F0
-#define IDE_SEC_BASE 0x170
-
-#define IDE_PRDT_LAST 0x8000
-/**
- \enum HddControls
- \brief Commands to be sent to HDD_CMD
-*/
-enum HddControls {
- HDD_PIO_R28 = 0x20,
- HDD_PIO_R48 = 0x24,
- HDD_DMA_R48 = 0x25,
- HDD_PIO_W28 = 0x30,
- HDD_PIO_W48 = 0x34,
- HDD_DMA_W48 = 0x35,
- HDD_DMA_R28 = 0xC8,
- HDD_DMA_W28 = 0xCA,
-};
-
// === STRUCTURES ===
-typedef struct {
+typedef struct
+{
Uint32 PBufAddr;
Uint16 Bytes;
Uint16 Flags;
-} tPRDT_Ent;
-typedef struct {
+} __attribute__ ((packed)) tPRDT_Ent;
+typedef struct
+{
Uint16 Flags; // 1
Uint16 Usused1[9]; // 10
char SerialNum[20]; // 20
Uint16 Usused2[3]; // 23
char FirmwareVer[8]; // 27
char ModelNumber[40]; // 47
- Uint16 SectPerInt; // 48 - and with 0xFF to get true value;
+ Uint16 SectPerInt; // 48 - AND with 0xFF to get true value;
Uint16 Unused3; // 49
Uint16 Capabilities[2]; // 51
Uint16 Unused4[2]; // 53
Uint16 Unused6[100-62];
Uint64 Sectors48;
Uint16 Unused7[256-104];
-} tIdentify;
-typedef struct {
- Uint8 BootCode[0x1BE];
- struct {
- Uint8 Boot;
- Uint8 Unused1; // Also CHS Start
- Uint16 StartHi; // Also CHS Start
- Uint8 SystemID;
- Uint8 Unused2; // Also CHS Length
- Uint16 LengthHi; // Also CHS Length
- Uint32 LBAStart;
- Uint32 LBALength;
- } __attribute__ ((packed)) Parts[4];
- Uint16 BootFlag; // = 0xAA 55
-} __attribute__ ((packed)) tMBR;
+} __attribute__ ((packed)) tIdentify;
-typedef struct {
- Uint64 Start;
- Uint64 Length;
- char Name[4];
- tVFS_Node Node;
-} tATA_Partition;
-typedef struct {
- Uint64 Sectors;
- char Name[2];
- tVFS_Node Node;
- int NumPartitions;
- tATA_Partition *Partitions;
-} tATA_Disk;
+// === IMPORTS ===
+extern void ATA_ParseMBR(int Disk);
// === PROTOTYPES ===
int ATA_Install();
void ATA_SetupVFS();
int ATA_ScanDisk(int Disk);
void ATA_ParseGPT(int Disk);
-void ATA_ParseMBR(int Disk);
void ATA_int_MakePartition(tATA_Partition *Part, int Disk, int Num, Uint64 Start, Uint64 Length);
Uint16 ATA_GetBasePort(int Disk);
// Filesystem Interface
return 1;
}
-/**
- * \fn void ATA_ParseGPT(int Disk)
- * \brief Parses the GUID Partition Table
- */
-void ATA_ParseGPT(int Disk)
-{
- ///\todo Support GPT Disks
- Warning("GPT Disks are currently unsupported");
-}
-
-/**
- * \fn void ATA_ParseMBR(int Disk)
- */
-void ATA_ParseMBR(int Disk)
-{
- int i, j = 0, k = 4;
- tMBR mbr;
- Uint64 extendedLBA;
-
- ENTER("iDisk", Disk);
-
- // Read Boot Sector
- ATA_ReadDMA( Disk, 0, 1, &mbr );
-
- // Count Partitions
- gATA_Disks[Disk].NumPartitions = 0;
- extendedLBA = 0;
- for( i = 0; i < 4; i ++ )
- {
- if( mbr.Parts[i].SystemID == 0 ) continue;
- if(
- mbr.Parts[i].Boot == 0x0 || mbr.Parts[i].Boot == 0x80 // LBA 28
- || mbr.Parts[i].Boot == 0x1 || mbr.Parts[i].Boot == 0x81 // LBA 48
- )
- {
- if( mbr.Parts[i].SystemID == 0xF || mbr.Parts[i].SystemID == 5 ) {
- LOG("Extended Partition");
- if(extendedLBA != 0) {
- Warning("Disk %i has multiple extended partitions, ignoring rest", Disk);
- continue;
- }
- extendedLBA = mbr.Parts[i].LBAStart;
- continue;
- }
- LOG("Primary Partition");
-
- gATA_Disks[Disk].NumPartitions ++;
- continue;
- }
- // Invalid Partition, so don't count it
- }
- while(extendedLBA != 0)
- {
- if( ATA_ReadDMA( Disk, extendedLBA, 1, &mbr ) != 0 )
- break; // Stop on Errors
-
- extendedLBA = 0;
-
- if( mbr.Parts[0].SystemID == 0 ) continue;
- if( mbr.Parts[0].Boot == 0x0 || mbr.Parts[0].Boot == 0x80 // LBA 28
- || mbr.Parts[0].Boot == 0x1 || mbr.Parts[0].Boot == 0x81 // LBA 48
- )
- {
- if(mbr.Parts[0].SystemID == 0xF || mbr.Parts[0].SystemID == 0x7)
- extendedLBA = mbr.Parts[0].LBAStart;
- else
- gATA_Disks[Disk].NumPartitions ++;
- }
-
- if( mbr.Parts[1].SystemID == 0 ) continue;
- if( mbr.Parts[1].Boot == 0x0 || mbr.Parts[1].Boot == 0x80 // LBA 28
- || mbr.Parts[1].Boot == 0x1 || mbr.Parts[1].Boot == 0x81 // LBA 48
- )
- {
- if(mbr.Parts[1].SystemID == 0xF || mbr.Parts[1].SystemID == 0x7) {
- if(extendedLBA == 0) {
- Warning("Disk %i has twp forward link in the extended partition",
- Disk);
- break;
- }
- extendedLBA = mbr.Parts[1].LBAStart;
- }
- else {
- if(extendedLBA != 0) {
- Warning("Disk %i lacks a forward link in the extended partition",
- Disk);
- break;
- }
- gATA_Disks[Disk].NumPartitions ++;
- }
- }
- }
- LOG("gATA_Disks[Disk].NumPartitions = %i", gATA_Disks[Disk].NumPartitions);
-
- // Create patition array
- gATA_Disks[Disk].Partitions = malloc( gATA_Disks[Disk].NumPartitions * sizeof(tATA_Partition) );
-
- // --- Fill Partition Info ---
- extendedLBA = 0;
- for( i = 0; i < 4; i ++ )
- {
- Log("mbr.Parts[%i].SystemID = 0x%02x", i, mbr.Parts[i].SystemID);
- if( mbr.Parts[i].SystemID == 0 ) continue;
- if( mbr.Parts[i].Boot == 0x0 || mbr.Parts[i].Boot == 0x80 ) // LBA 28
- {
- if( mbr.Parts[1].SystemID == 0xF || mbr.Parts[1].SystemID == 5 ) {
- if(extendedLBA != 0) {
- Warning("Disk %i has multiple extended partitions, ignoring rest", Disk);
- continue;
- }
- extendedLBA = mbr.Parts[1].LBAStart;
- continue;
- }
- // Create Partition
- ATA_int_MakePartition( &gATA_Disks[Disk].Partitions[j], Disk, i,
- mbr.Parts[i].LBAStart, mbr.Parts[i].LBALength
- );
- j ++;
- continue;
- }
- if( mbr.Parts[i].Boot == 0x1 || mbr.Parts[i].Boot == 0x81 ) // LBA 48
- {
- if( mbr.Parts[i].SystemID == 0xF || mbr.Parts[i].SystemID == 5 ) {
- if(extendedLBA != 0) {
- Warning("Disk %i has multiple extended partitions, ignoring rest", Disk);
- continue;
- }
- extendedLBA = (mbr.Parts[i].StartHi << 16) | mbr.Parts[i].LBAStart;
- continue;
- }
- ATA_int_MakePartition( &gATA_Disks[Disk].Partitions[j], Disk, i,
- (mbr.Parts[i].StartHi << 16) | mbr.Parts[i].LBAStart,
- (mbr.Parts[i].LengthHi << 16) | mbr.Parts[i].LBALength
- );
- j ++;
- }
- // Invalid Partition, so don't count it
- }
- // Scan extended partition
- while(extendedLBA != 0)
- {
- if( ATA_ReadDMA( Disk, extendedLBA, 1, &mbr ) != 0 )
- break; // Stop on Errors
-
- extendedLBA = 0;
-
- // Check first entry (should be partition)
- if( mbr.Parts[0].SystemID != 0)
- {
- if( mbr.Parts[0].Boot == 0x0 || mbr.Parts[0].Boot == 0x80 ) // LBA 28
- {
- // Forward Link to next Extended partition entry
- if(mbr.Parts[0].SystemID == 0xF || mbr.Parts[0].SystemID == 0x7)
- extendedLBA = mbr.Parts[0].LBAStart;
- else {
- ATA_int_MakePartition( &gATA_Disks[Disk].Partitions[j], Disk, k,
- mbr.Parts[0].LBAStart, mbr.Parts[0].LBALength
- );
- j ++; k ++;
- }
- }
- else if( mbr.Parts[0].Boot == 0x1 || mbr.Parts[0].Boot == 0x81 ) // LBA 48
- {
- if(mbr.Parts[0].SystemID == 0xF || mbr.Parts[0].SystemID == 0x7)
- extendedLBA = (mbr.Parts[0].StartHi << 16) | mbr.Parts[0].LBAStart;
- else {
- ATA_int_MakePartition( &gATA_Disks[Disk].Partitions[j], Disk, k,
- (mbr.Parts[0].StartHi << 16) | mbr.Parts[0].LBAStart,
- (mbr.Parts[0].LengthHi << 16) | mbr.Parts[0].LBALength
- );
- j ++; k ++;
- }
- }
- }
-
- // Check second entry (should be forward link)
- if( mbr.Parts[1].SystemID != 0)
- {
- if(mbr.Parts[1].Boot == 0x0 || mbr.Parts[1].Boot == 0x80 ) // LBA 28
- {
- if(mbr.Parts[1].SystemID == 0xF || mbr.Parts[1].SystemID == 0x7) {
- if(extendedLBA == 0) {
- Warning("Disk %i has twp forward link in the extended partition",
- Disk);
- break;
- }
- extendedLBA = mbr.Parts[1].LBAStart;
- }
- else
- {
- if(extendedLBA != 0) {
- Warning("Disk %i lacks a forward link in the extended partition",
- Disk);
- break;
- }
- ATA_int_MakePartition( &gATA_Disks[Disk].Partitions[j], Disk, k,
- mbr.Parts[1].LBAStart, mbr.Parts[1].LBALength
- );
- j ++; k ++;
- }
-
- }
- else if( mbr.Parts[1].Boot == 0x1 || mbr.Parts[1].Boot == 0x81 ) // LBA 48
- {
- if(mbr.Parts[1].SystemID == 0xF || mbr.Parts[1].SystemID == 0x7) {
- if(extendedLBA == 0) {
- Warning("Disk %i has twp forward link in the extended partition",
- Disk);
- break;
- }
- extendedLBA = (mbr.Parts[1].StartHi << 16) | mbr.Parts[1].LBAStart;
- }
- else
- {
- if(extendedLBA != 0) {
- Warning("Disk %i lacks a forward link in the extended partition",
- Disk);
- break;
- }
- ATA_int_MakePartition( &gATA_Disks[Disk].Partitions[j], Disk, k,
- (mbr.Parts[1].StartHi << 16) | mbr.Parts[1].LBAStart,
- (mbr.Parts[1].LengthHi << 16) | mbr.Parts[1].LBALength
- );
- j ++; k ++;
- }
- }
- }
- }
-
- LEAVE('-');
-}
-
/**
* \fn void ATA_int_MakePartition(tATA_Partition *Part, int Disk, int Num, Uint64 Start, Uint64 Length)
* \brief Fills a parition's information structure
LEAVE('-');
}
+/**
+ * \fn void ATA_ParseGPT(int Disk)
+ * \brief Parses the GUID Partition Table
+ */
+void ATA_ParseGPT(int Disk)
+{
+ ///\todo Support GPT Disks
+ Warning("GPT Disks are currently unsupported");
+}
+
/**
* \fn Uint16 ATA_GetPortBase(int Disk)
* \brief Returns the base port for a given disk
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