static void
write_control_reg (struct hw *me,
struct mn103ser *serial,
unsigned_word serial_reg,
const void *source,
unsigned nr_bytes)
{
unsigned16 val = LE2H_2 (*(unsigned16 *)source);
/* really allow 1 byte write, too */
if ( nr_bytes == 2 )
{
if ( serial_reg == 2 && (val & 0x0C04) != 0 )
{
hw_abort(me, "Cannot write to read-only bits of SC2CTR.");
}
else
{
serial->device[serial_reg].control = val;
}
}
else
{
hw_abort (me, "bad read size of %d bytes from SC%dSTR.", nr_bytes,
serial_reg);
}
}
static unsigned
mn103cpu_io_write_buffer (struct hw *me,
const void *source,
int space,
unsigned_word base,
unsigned nr_bytes)
{
struct mn103cpu *controller = hw_data (me);
unsigned16 val;
enum mn103cpu_regs reg;
if (nr_bytes != 2)
hw_abort (me, "must be two byte write");
reg = decode_mn103cpu_addr (me, controller, base);
val = LE2H_2 (* (unsigned16 *) source);
switch (reg)
{
case IVR0_REG:
case IVR1_REG:
case IVR2_REG:
case IVR3_REG:
case IVR4_REG:
case IVR5_REG:
case IVR6_REG:
controller->interrupt_vector[reg - IVR0_REG] = val;
HW_TRACE ((me, "ivr%d = 0x%04lx", reg - IVR0_REG, (long) val));
break;
default:
/* just ignore the write */
break;
}
return nr_bytes;
}
