diff options
Diffstat (limited to 'sim/bfin/dv-bfin_emac.c')
| -rw-r--r-- | sim/bfin/dv-bfin_emac.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/sim/bfin/dv-bfin_emac.c b/sim/bfin/dv-bfin_emac.c index 1abdf99..7bdedbb 100644 --- a/sim/bfin/dv-bfin_emac.c +++ b/sim/bfin/dv-bfin_emac.c @@ -177,8 +177,10 @@ bfin_emac_io_write_buffer (struct hw *me, const void *source, 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; @@ -263,7 +265,7 @@ bfin_emac_io_write_buffer (struct hw *me, const void *source, break; default: dv_bfin_mmr_invalid (me, addr, nr_bytes, true); - break; + return 0; } return nr_bytes; @@ -277,8 +279,10 @@ bfin_emac_io_read_buffer (struct hw *me, void *dest, 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); @@ -328,7 +332,7 @@ bfin_emac_io_read_buffer (struct hw *me, void *dest, break; default: dv_bfin_mmr_invalid (me, addr, nr_bytes, false); - break; + return 0; } return nr_bytes; |