diff options
Diffstat (limited to 'hw/net/stellaris_enet.c')
| -rw-r--r-- | hw/net/stellaris_enet.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/hw/net/stellaris_enet.c b/hw/net/stellaris_enet.c index b99f93e732..2079fc691f 100644 --- a/hw/net/stellaris_enet.c +++ b/hw/net/stellaris_enet.c @@ -109,6 +109,15 @@ static inline bool stellaris_txpacket_complete(stellaris_enet_state *s) return s->tx_fifo_len >= framelen; } +/* Return true if the TX FIFO threshold is enabled and the FIFO + * has filled enough to reach it. + */ +static inline bool stellaris_tx_thr_reached(stellaris_enet_state *s) +{ + return (s->thr < 0x3f && + (s->tx_fifo_len >= 4 * (s->thr * 8 + 1))); +} + /* Send the packet currently in the TX FIFO */ static void stellaris_enet_send(stellaris_enet_state *s) { @@ -309,7 +318,7 @@ static void stellaris_enet_write(void *opaque, hwaddr offset, s->tx_fifo[s->tx_fifo_len++] = value >> 24; } - if (stellaris_txpacket_complete(s)) { + if (stellaris_tx_thr_reached(s) && stellaris_txpacket_complete(s)) { stellaris_enet_send(s); } break; @@ -338,9 +347,13 @@ static void stellaris_enet_write(void *opaque, hwaddr offset, case 0x2c: /* MTXD */ s->mtxd = value & 0xff; break; + case 0x38: /* TR */ + if (value & 1) { + stellaris_enet_send(s); + } + break; case 0x30: /* MRXD */ case 0x34: /* NP */ - case 0x38: /* TR */ /* Ignored. */ case 0x3c: /* Undocuented: Timestamp? */ /* Ignored. */ |