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#include "ATADrive.class.h"
#include <DeviceManager/Dev.ns.h>
#include <VFS/Part.ns.h>
String ATAController::getClass() {
return "controller.ata";
}
String ATAController::getName() {
return String("ATA controller #") + String::number(m_number);
}
void ATAController::detect() {
ATAController *c[2];
c[0] = new ATAController(ATA_BUS1_BASE, 0);
c[1] = new ATAController(ATA_BUS2_BASE, 1);
Dev::registerDevice(c[0]); Dev::registerDevice(c[1]);
for (u32int d = 0; d < 2; d++) {
for (u32int r = 0; r < 2; r++) {
ATADrive* drv = c[d]->m_drives[r];
if (drv != 0) {
Dev::registerDevice(drv);
Part::registerDevice(drv);
}
}
}
}
ATAController::ATAController(u32int base, u8int number) {
m_base = base; m_number = number;
m_drives[0] = NULL; m_drives[1] = NULL;
identify(false); //Identify master device
identify(true); //Identify slave device
}
void ATAController::identify(bool slave) {
if (m_drives[(slave ? 1 : 0)] != NULL) return;
writeByte(ATA_PORT_DRIVE_SELECT, (slave ? 0xB0 : 0xA0));
writeByte(ATA_PORT_COMMAND, ATA_CMD_IDENTIFY);
u8int ret = readByte(ATA_PORT_COMMAND);
if (ret == 0) return; //Drive does not exist
while ((ret & 0x88) != 0x08 and (ret & 1) != 1) {
ret = readByte(ATA_PORT_COMMAND);
}
if ((ret & 1) == 1) return; //Error while IDENTIFY
u16int data[256];
for (u32int i = 0; i < 256; i++) data[i] = readWord(ATA_PORT_DATA);
u32int blocks = (data[61] << 16) | data[60];
if (blocks != 0) { //Drive supports LBA28
m_drives[(slave ? 1 : 0)] = new ATADrive(this, slave, blocks, data);
}
}
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