USB点滴

1.EHCI,UHCI,OHCI

EHCI is for the high-speed USB 2.0 functionality.

The Universal Host Controller Interface(UHCI) or Open Host Controller Interface for USB (OHCI) are the two industry standard USB 1.1 host controller interfaces.

 

2.寄存器接口

2.1. PCI Configuration Registers (USB)

2.2. Host Controller Capability Registers

2.3. Host Controller Operational Registers

 

3.pci设备扫描

void pciScan(void)
{
    UINT32 temp;
    int devNum,busNo,funNo,offset;
    for(busNo=0; busNo<32; busNo++)
    {
        for(devNum=0; devNum<32; devNum++)
        {
            for(funNo=0; funNo<8; funNo++)
            {
                temp = 0;
                pciConfigInLong(busNo,devNum,funNo,0,&temp);
                if((temp!=0xffffffff)&&(temp!=0))
                {
                    printf("\nBusNo=%02d,devNum=%02d,funNo=%02d",busNo,devNum,funNo);
                    for(offset=0; offset<=0x40; offset += 4)
                    {
                        pciConfigInLong(busNo,devNum,funNo,offset,&temp);
                        if((offset%16)==0)printf("\n%08x:",offset);
                        printf(" %08x",temp);
                    }
                    printf("\n");
                }
                if((busNo==0)&&(devNum==0))break;
            }
        }
    }
}