diff options
| author | Jason Wang <jasowang@redhat.com> | 2012-09-28 10:06:00 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2012-10-08 13:59:39 +0200 |
| commit | 9e12c5aff2cfdd1574bf732c4bbf579d0c2e85c1 (patch) | |
| tree | 33b132c7934018fdf79d36162bdcc1f41ce89353 /hw/rtl8139.c | |
| parent | 4bb26682f70a5f626cad3e0ac82bf4b6252ea7a4 (diff) | |
rtl8139: implement 8139cp link status
Add a link status chang callback and change the link status bit in BMSR
& MSR accordingly. Tested in Linux/Windows guests.
The link status bit of MediaStatus is infered from BasicModeStatus,
they are inverse.
nc.link_down could not be migrated, this patch updates link_down in
rtl8139_post_load() to keep it coincident with real link status.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Amos Kong <akong@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Diffstat (limited to 'hw/rtl8139.c')
| -rw-r--r-- | hw/rtl8139.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/hw/rtl8139.c b/hw/rtl8139.c index b7c82ee027..6b28fea96a 100644 --- a/hw/rtl8139.c +++ b/hw/rtl8139.c @@ -167,7 +167,7 @@ enum IntrStatusBits { PCIErr = 0x8000, PCSTimeout = 0x4000, RxFIFOOver = 0x40, - RxUnderrun = 0x20, + RxUnderrun = 0x20, /* Packet Underrun / Link Change */ RxOverflow = 0x10, TxErr = 0x08, TxOK = 0x04, @@ -3003,7 +3003,8 @@ static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr) break; case MediaStatus: - ret = 0xd0; + /* The LinkDown bit of MediaStatus is inverse with link status */ + ret = 0xd0 | (~s->BasicModeStatus & 0x04); DPRINTF("MediaStatus read 0x%x\n", ret); break; @@ -3258,6 +3259,10 @@ static int rtl8139_post_load(void *opaque, int version_id) s->cplus_enabled = s->CpCmd != 0; } + /* nc.link_down can't be migrated, so infer link_down according + * to link status bit in BasicModeStatus */ + s->nic->nc.link_down = (s->BasicModeStatus & 0x04) == 0; + return 0; } @@ -3449,12 +3454,27 @@ static void pci_rtl8139_uninit(PCIDevice *dev) qemu_del_net_client(&s->nic->nc); } +static void rtl8139_set_link_status(NetClientState *nc) +{ + RTL8139State *s = DO_UPCAST(NICState, nc, nc)->opaque; + + if (nc->link_down) { + s->BasicModeStatus &= ~0x04; + } else { + s->BasicModeStatus |= 0x04; + } + + s->IntrStatus |= RxUnderrun; + rtl8139_update_irq(s); +} + static NetClientInfo net_rtl8139_info = { .type = NET_CLIENT_OPTIONS_KIND_NIC, .size = sizeof(NICState), .can_receive = rtl8139_can_receive, .receive = rtl8139_receive, .cleanup = rtl8139_cleanup, + .link_status_changed = rtl8139_set_link_status, }; static int pci_rtl8139_init(PCIDevice *dev) |