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[Qemu-devel] [PATCH 3/4] Implement e1000 link status
From: |
Mark McLoughlin |
Subject: |
[Qemu-devel] [PATCH 3/4] Implement e1000 link status |
Date: |
Thu, 8 Jan 2009 18:37:49 +0000 |
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 <address@hidden>
---
hw/e1000.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/hw/e1000.c b/hw/e1000.c
index 09cb96a..ccf9bc0 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -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);
--
1.6.0.6