diff options
Diffstat (limited to 'hw/pcnet.c')
| -rw-r--r-- | hw/pcnet.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/hw/pcnet.c b/hw/pcnet.c index 7413409331..d769b08b78 100644 --- a/hw/pcnet.c +++ b/hw/pcnet.c @@ -77,6 +77,7 @@ struct qemu_ether_header { #define CSR_DTX(S) !!(((S)->csr[15])&0x0002) #define CSR_LOOP(S) !!(((S)->csr[15])&0x0004) #define CSR_DXMTFCS(S) !!(((S)->csr[15])&0x0008) +#define CSR_INTL(S) !!(((S)->csr[15])&0x0040) #define CSR_DRCVPA(S) !!(((S)->csr[15])&0x2000) #define CSR_DRCVBC(S) !!(((S)->csr[15])&0x4000) #define CSR_PROM(S) !!(((S)->csr[15])&0x8000) @@ -1234,6 +1235,15 @@ static void pcnet_transmit(PCNetState *s) if (BCR_SWSTYLE(s) != 1) add_crc = GET_FIELD(tmd.status, TMDS, ADDFCS); } + if (s->lnkst == 0 && + (!CSR_LOOP(s) || (!CSR_INTL(s) && !BCR_TMAULOOP(s)))) { + SET_FIELD(&tmd.misc, TMDM, LCAR, 1); + SET_FIELD(&tmd.status, TMDS, ERR, 1); + SET_FIELD(&tmd.status, TMDS, OWN, 0); + s->csr[0] |= 0xa000; /* ERR | CERR */ + s->xmit_pos = -1; + goto txdone; + } if (!GET_FIELD(tmd.status, TMDS, ENP)) { int bcnt = 4096 - GET_FIELD(tmd.length, TMDL, BCNT); s->phys_mem_read(s->dma_opaque, PHYSADDR(s, tmd.tbadr), @@ -1262,6 +1272,7 @@ static void pcnet_transmit(PCNetState *s) s->xmit_pos = -1; } + txdone: SET_FIELD(&tmd.status, TMDS, OWN, 0); TMDSTORE(&tmd, PHYSADDR(s,CSR_CXDA(s))); if (!CSR_TOKINTD(s) || (CSR_LTINTEN(s) && GET_FIELD(tmd.status, TMDS, LTINT))) |