mirror of https://gitlab.com/qemu-project/qemu
e1000: introduce helpers to manipulate link status
This patch introduces helpers to change link status bit for phy/mac register. This would help to reduce code duplication and would be used by following patches. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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23
hw/e1000.c
23
hw/e1000.c
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@ -142,6 +142,20 @@ enum {
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defreg(VET),
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defreg(VET),
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};
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};
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static void
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e1000_link_down(E1000State *s)
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{
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s->mac_reg[STATUS] &= ~E1000_STATUS_LU;
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s->phy_reg[PHY_STATUS] &= ~MII_SR_LINK_STATUS;
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}
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static void
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e1000_link_up(E1000State *s)
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{
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s->mac_reg[STATUS] |= E1000_STATUS_LU;
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s->phy_reg[PHY_STATUS] |= MII_SR_LINK_STATUS;
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}
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enum { PHY_R = 1, PHY_W = 2, PHY_RW = PHY_R | PHY_W };
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enum { PHY_R = 1, PHY_W = 2, PHY_RW = PHY_R | PHY_W };
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static const char phy_regcap[0x20] = {
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static const char phy_regcap[0x20] = {
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[PHY_STATUS] = PHY_R, [M88E1000_EXT_PHY_SPEC_CTRL] = PHY_RW,
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[PHY_STATUS] = PHY_R, [M88E1000_EXT_PHY_SPEC_CTRL] = PHY_RW,
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@ -228,8 +242,7 @@ static void e1000_reset(void *opaque)
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memset(&d->tx, 0, sizeof d->tx);
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memset(&d->tx, 0, sizeof d->tx);
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if (d->nic->nc.link_down) {
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if (d->nic->nc.link_down) {
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d->mac_reg[STATUS] &= ~E1000_STATUS_LU;
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e1000_link_down(d);
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d->phy_reg[PHY_STATUS] &= ~MII_SR_LINK_STATUS;
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}
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}
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}
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}
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@ -675,11 +688,9 @@ e1000_set_link_status(VLANClientState *nc)
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uint32_t old_status = s->mac_reg[STATUS];
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uint32_t old_status = s->mac_reg[STATUS];
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if (nc->link_down) {
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if (nc->link_down) {
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s->mac_reg[STATUS] &= ~E1000_STATUS_LU;
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e1000_link_down(s);
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s->phy_reg[PHY_STATUS] &= ~MII_SR_LINK_STATUS;
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} else {
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} else {
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s->mac_reg[STATUS] |= E1000_STATUS_LU;
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e1000_link_up(s);
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s->phy_reg[PHY_STATUS] |= MII_SR_LINK_STATUS;
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}
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}
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if (s->mac_reg[STATUS] != old_status)
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if (s->mac_reg[STATUS] != old_status)
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