ACPI_STATUS
AcpiOsReadPort (
ACPI_IO_ADDRESS Address,
UINT32 *Value,
UINT32 Width)
{
switch (Width) {
case 8:
*Value = in_b((uint16_t)Address);
break;
case 16:
*Value = in_h((uint16_t)Address);
break;
case 32:
*Value = in_w((uint16_t)Address);
break;
default:
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/*
* Memory block inputs (16 bit) cnt : number of half words
*/
EXPORT void InMemH(UW iob, W ix, UH *buf, W cnt)
{
UW port = iob + (ix * IOSTEP);
while (--cnt >= 0) {
*buf++ = in_h(port);
}
}
/*
I/O read
*/
EXPORT W readIO(UW addr, UW *data, W unit)
{
W n;
UW pa;
/* address misalignment is reported as error */
if (addr & (unit - 1)) return 0;
/* I/O address check & conversion to physical address */
n = chkIOAddr(addr, &pa, unit);
if (n < unit) return 0;
switch(unit) {
case 4: *data = in_w(pa); break;
case 2: *data = in_h(pa); break;
default: *data = in_b(pa);
}
return unit;
}
