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Implement e1000 link status (Mark McLoughlin) 

On link up or down we set the E1000_STATUS_LU ("link up") bit
in the status register and set the E1000_ICR_LSC ("link
status changed") bit in the interrupt cause register before
interrupting the guest.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6249 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-01-08 19:45:50 +00:00
parent 34b25ca74e
commit 99ed7e30cb
1 changed files with 16 additions and 0 deletions
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16
hw/e1000.c
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@ -570,6 +570,21 @@ receive_filter(E1000State *s, const uint8_t *buf, int size)
return 0;
}
static void
e1000_set_link_status(VLANClientState *vc)
{
E1000State *s = vc->opaque;
uint32_t old_status = s->mac_reg[STATUS];
if (vc->link_down)
s->mac_reg[STATUS] &= ~E1000_STATUS_LU;
else
s->mac_reg[STATUS] |= E1000_STATUS_LU;
if (s->mac_reg[STATUS] != old_status)
set_ics(s, 0, E1000_ICR_LSC);
}
static int
e1000_can_receive(void *opaque)
{
@ -1073,6 +1088,7 @@ pci_e1000_init(PCIBus *bus, NICInfo *nd, int devfn)
d->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name,
e1000_receive, e1000_can_receive, d);
d->vc->link_status_changed = e1000_set_link_status;
qemu_format_nic_info_str(d->vc, d->nd->macaddr);