/* Blackfin Ethernet Media Access Controller (EMAC) 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;
bu32 *valuep;
+ /* Invalid access mode is higher priority than missing register. */
/* XXX: 16bit accesses are allowed ... */
- dv_bfin_mmr_require_32 (me, addr, nr_bytes, true);
+ if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, true))
+ return 0;
value = dv_load_4 (source);
mmr_off = addr - emac->base;
dv_w1c_4_partial (valuep, value, 0xf20);
break;
case mmr_offset(systat):
- dv_w1c_4 (valuep, value, 0x1e);
+ dv_w1c_4 (valuep, value, 0xe1);
break;
case mmr_offset(staadd):
*valuep = value | STABUSY;
case mmr_offset(tx_stky):
case mmr_offset(mmc_rirqs):
case mmr_offset(mmc_tirqs):
- dv_w1c_4 (valuep, value, 0);
+ dv_w1c_4 (valuep, value, -1);
break;
case mmr_offset(mmc_ctl):
/* Writing to bit 0 clears all counters. */
break;
default:
dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
- break;
+ return 0;
}
return nr_bytes;
bu32 mmr_off;
bu32 *valuep;
+ /* Invalid access mode is higher priority than missing register. */
/* XXX: 16bit accesses are allowed ... */
- dv_bfin_mmr_require_32 (me, addr, nr_bytes, false);
+ if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, false))
+ return 0;
mmr_off = addr - emac->base;
valuep = (void *)((unsigned long)emac + mmr_base() + mmr_off);
break;
default:
dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
- break;
+ return 0;
}
return nr_bytes;
if (ret < 0)
return 0;
ret += 4; /* include crc */
- pad_ret = MAX (ret + 4, 64);
+ pad_ret = max (ret + 4, 64);
len = pad_ret;
memcpy (dest, &len, 2);