Started splitting ATA driver into separate files

[tpg/acess2.git] / Modules / ATA / common.h

diff --git a/Modules/ATA/common.h b/Modules/ATA/common.h
new file mode 100644 (file)
index 0000000..18e62a8
--- /dev/null
+++ b/Modules/ATA/common.h
@@ -0,0 +1,77 @@
+/*
+ * Acess2 IDE Harddisk Driver
+ * - main.c
+ */
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+#include <acess.h>
+#include <vfs.h>
+
+// === 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
+{
+       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;
+
+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;
+
+// === GLOBALS ===
+extern tATA_Disk       gATA_Disks[];
+
+// === FUNCTIONS ===
+extern void    ATA_int_MakePartition(tATA_Partition *Part, int Disk, int Num, Uint64 Start, Uint64 Length);
+extern int     ATA_ReadDMA(Uint8 Disk, Uint64 Address, Uint Count, void *Buffer);
+extern int     ATA_WriteDMA(Uint8 Disk, Uint64 Address, Uint Count, void *Buffer);
+
+#endif