/* Blackfin Two Wire Interface (TWI) model
- Copyright (C) 2010-2011 Free Software Foundation, Inc.
+ Copyright (C) 2010-2020 Free Software Foundation, Inc.
Contributed by Analog Devices, Inc.
This file is part of simulators.
bu32 value;
bu16 *valuep;
+ /* Invalid access mode is higher priority than missing register. */
+ if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
+ return 0;
+
value = dv_load_2 (source);
mmr_off = addr - twi->base;
valuep = (void *)((unsigned long)twi + mmr_base() + mmr_off);
HW_TRACE_WRITE ();
- dv_bfin_mmr_require_16 (me, addr, nr_bytes, true);
-
switch (mmr_off)
{
case mmr_offset(clkdiv):
*valuep = value;
break;
case mmr_offset(int_stat):
- dv_w1c_2 (valuep, value, 0);
+ dv_w1c_2 (valuep, value, -1);
break;
case mmr_offset(master_stat):
- dv_w1c_2 (valuep, value, MPROG | SDASEN | SCLSEN | BUSBUSY);
+ dv_w1c_2 (valuep, value, BUFWRERR | BUFRDERR | DNAK | ANAK | LOSTARB);
break;
case mmr_offset(slave_stat):
case mmr_offset(fifo_stat):
break;
default:
dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
- break;
+ return 0;
}
return nr_bytes;
bu32 mmr_off;
bu16 *valuep;
+ /* Invalid access mode is higher priority than missing register. */
+ if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, false))
+ return 0;
+
mmr_off = addr - twi->base;
valuep = (void *)((unsigned long)twi + mmr_base() + mmr_off);
HW_TRACE_READ ();
- dv_bfin_mmr_require_16 (me, addr, nr_bytes, false);
-
switch (mmr_off)
{
case mmr_offset(clkdiv):
break;
default:
dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
- break;
+ return 0;
}
return nr_bytes;