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Diffstat (limited to 'hw/e1000.c')
-rw-r--r--hw/e1000.c95
1 files changed, 70 insertions, 25 deletions
diff --git a/hw/e1000.c b/hw/e1000.c
index 5537ad2..d6fe815 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -26,12 +26,12 @@
#include "hw.h"
-#include "pci.h"
-#include "net.h"
+#include "pci/pci.h"
+#include "net/net.h"
#include "net/checksum.h"
#include "loader.h"
-#include "sysemu.h"
-#include "dma.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/dma.h"
#include "e1000_hw.h"
@@ -61,6 +61,8 @@ static int debugflags = DBGBIT(TXERR) | DBGBIT(GENERAL);
/* this is the size past which hardware will drop packets when setting LPE=0 */
#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
+/* this is the size past which hardware will drop packets when setting LPE=1 */
+#define MAXIMUM_ETHERNET_LPE_SIZE 16384
/*
* HW models:
@@ -164,7 +166,6 @@ static void
set_phy_ctrl(E1000State *s, int index, uint16_t val)
{
if ((val & MII_CR_AUTO_NEG_EN) && (val & MII_CR_RESTART_AUTO_NEG)) {
- s->nic->nc.link_down = true;
e1000_link_down(s);
s->phy_reg[PHY_STATUS] &= ~MII_SR_AUTONEG_COMPLETE;
DBGOUT(PHY, "Start link auto negotiation\n");
@@ -176,8 +177,9 @@ static void
e1000_autoneg_timer(void *opaque)
{
E1000State *s = opaque;
- s->nic->nc.link_down = false;
- e1000_link_up(s);
+ if (!qemu_get_queue(s->nic)->link_down) {
+ e1000_link_up(s);
+ }
s->phy_reg[PHY_STATUS] |= MII_SR_AUTONEG_COMPLETE;
DBGOUT(PHY, "Auto negotiation is completed\n");
}
@@ -230,7 +232,17 @@ set_interrupt_cause(E1000State *s, int index, uint32_t val)
val |= E1000_ICR_INT_ASSERTED;
}
s->mac_reg[ICR] = val;
+
+ /*
+ * Make sure ICR and ICS registers have the same value.
+ * The spec says that the ICS register is write-only. However in practice,
+ * on real hardware ICS is readable, and for reads it has the same value as
+ * ICR (except that ICS does not have the clear on read behaviour of ICR).
+ *
+ * The VxWorks PRO/1000 driver uses this behaviour.
+ */
s->mac_reg[ICS] = val;
+
qemu_set_irq(s->dev.irq[0], (s->mac_reg[IMS] & s->mac_reg[ICR]) != 0);
}
@@ -279,7 +291,7 @@ static void e1000_reset(void *opaque)
d->rxbuf_min_shift = 1;
memset(&d->tx, 0, sizeof d->tx);
- if (d->nic->nc.link_down) {
+ if (qemu_get_queue(d->nic)->link_down) {
e1000_link_down(d);
}
@@ -307,7 +319,7 @@ set_rx_control(E1000State *s, int index, uint32_t val)
s->rxbuf_min_shift = ((val / E1000_RCTL_RDMTS_QUAT) & 3) + 1;
DBGOUT(RX, "RCTL: %d, mac_reg[RCTL] = 0x%x\n", s->mac_reg[RDT],
s->mac_reg[RCTL]);
- qemu_flush_queued_packets(&s->nic->nc);
+ qemu_flush_queued_packets(qemu_get_queue(s->nic));
}
static void
@@ -458,10 +470,11 @@ fcs_len(E1000State *s)
static void
e1000_send_packet(E1000State *s, const uint8_t *buf, int size)
{
+ NetClientState *nc = qemu_get_queue(s->nic);
if (s->phy_reg[PHY_CTRL] & MII_CR_LOOPBACK) {
- s->nic->nc.info->receive(&s->nic->nc, buf, size);
+ nc->info->receive(nc, buf, size);
} else {
- qemu_send_packet(&s->nic->nc, buf, size);
+ qemu_send_packet(nc, buf, size);
}
}
@@ -735,7 +748,7 @@ receive_filter(E1000State *s, const uint8_t *buf, int size)
static void
e1000_set_link_status(NetClientState *nc)
{
- E1000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
+ E1000State *s = qemu_get_nic_opaque(nc);
uint32_t old_status = s->mac_reg[STATUS];
if (nc->link_down) {
@@ -769,9 +782,10 @@ static bool e1000_has_rxbufs(E1000State *s, size_t total_size)
static int
e1000_can_receive(NetClientState *nc)
{
- E1000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
+ E1000State *s = qemu_get_nic_opaque(nc);
- return (s->mac_reg[RCTL] & E1000_RCTL_EN) && e1000_has_rxbufs(s, 1);
+ return (s->mac_reg[STATUS] & E1000_STATUS_LU) &&
+ (s->mac_reg[RCTL] & E1000_RCTL_EN) && e1000_has_rxbufs(s, 1);
}
static uint64_t rx_desc_base(E1000State *s)
@@ -785,7 +799,7 @@ static uint64_t rx_desc_base(E1000State *s)
static ssize_t
e1000_receive(NetClientState *nc, const uint8_t *buf, size_t size)
{
- E1000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
+ E1000State *s = qemu_get_nic_opaque(nc);
struct e1000_rx_desc desc;
dma_addr_t base;
unsigned int n, rdt;
@@ -797,8 +811,13 @@ e1000_receive(NetClientState *nc, const uint8_t *buf, size_t size)
size_t desc_size;
size_t total_size;
- if (!(s->mac_reg[RCTL] & E1000_RCTL_EN))
+ if (!(s->mac_reg[STATUS] & E1000_STATUS_LU)) {
return -1;
+ }
+
+ if (!(s->mac_reg[RCTL] & E1000_RCTL_EN)) {
+ return -1;
+ }
/* Pad to minimum Ethernet frame length */
if (size < sizeof(min_buf)) {
@@ -809,8 +828,9 @@ e1000_receive(NetClientState *nc, const uint8_t *buf, size_t size)
}
/* Discard oversized packets if !LPE and !SBP. */
- if (size > MAXIMUM_ETHERNET_VLAN_SIZE
- && !(s->mac_reg[RCTL] & E1000_RCTL_LPE)
+ if ((size > MAXIMUM_ETHERNET_LPE_SIZE ||
+ (size > MAXIMUM_ETHERNET_VLAN_SIZE
+ && !(s->mac_reg[RCTL] & E1000_RCTL_LPE)))
&& !(s->mac_reg[RCTL] & E1000_RCTL_SBP)) {
return size;
}
@@ -945,7 +965,7 @@ set_rdt(E1000State *s, int index, uint32_t val)
{
s->mac_reg[index] = val & 0xffff;
if (e1000_has_rxbufs(s, 1)) {
- qemu_flush_queued_packets(&s->nic->nc);
+ qemu_flush_queued_packets(qemu_get_queue(s->nic));
}
}
@@ -1096,13 +1116,37 @@ static bool is_version_1(void *opaque, int version_id)
return version_id == 1;
}
+static void e1000_pre_save(void *opaque)
+{
+ E1000State *s = opaque;
+ NetClientState *nc = qemu_get_queue(s->nic);
+ /*
+ * If link is down and auto-negotiation is ongoing, complete
+ * auto-negotiation immediately. This allows is to look at
+ * MII_SR_AUTONEG_COMPLETE to infer link status on load.
+ */
+ if (nc->link_down &&
+ s->phy_reg[PHY_CTRL] & MII_CR_AUTO_NEG_EN &&
+ s->phy_reg[PHY_CTRL] & MII_CR_RESTART_AUTO_NEG) {
+ s->phy_reg[PHY_STATUS] |= MII_SR_AUTONEG_COMPLETE;
+ }
+}
+
static int e1000_post_load(void *opaque, int version_id)
{
E1000State *s = opaque;
+ NetClientState *nc = qemu_get_queue(s->nic);
/* nc.link_down can't be migrated, so infer link_down according
- * to link status bit in mac_reg[STATUS] */
- s->nic->nc.link_down = (s->mac_reg[STATUS] & E1000_STATUS_LU) == 0;
+ * to link status bit in mac_reg[STATUS].
+ * Alternatively, restart link negotiation if it was in progress. */
+ nc->link_down = (s->mac_reg[STATUS] & E1000_STATUS_LU) == 0;
+ if (s->phy_reg[PHY_CTRL] & MII_CR_AUTO_NEG_EN &&
+ s->phy_reg[PHY_CTRL] & MII_CR_RESTART_AUTO_NEG &&
+ !(s->phy_reg[PHY_STATUS] & MII_SR_AUTONEG_COMPLETE)) {
+ nc->link_down = false;
+ qemu_mod_timer(s->autoneg_timer, qemu_get_clock_ms(vm_clock) + 500);
+ }
return 0;
}
@@ -1112,6 +1156,7 @@ static const VMStateDescription vmstate_e1000 = {
.version_id = 2,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
+ .pre_save = e1000_pre_save,
.post_load = e1000_post_load,
.fields = (VMStateField []) {
VMSTATE_PCI_DEVICE(dev, E1000State),
@@ -1220,7 +1265,7 @@ e1000_mmio_setup(E1000State *d)
static void
e1000_cleanup(NetClientState *nc)
{
- E1000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
+ E1000State *s = qemu_get_nic_opaque(nc);
s->nic = NULL;
}
@@ -1234,7 +1279,7 @@ pci_e1000_uninit(PCIDevice *dev)
qemu_free_timer(d->autoneg_timer);
memory_region_destroy(&d->mmio);
memory_region_destroy(&d->io);
- qemu_del_net_client(&d->nic->nc);
+ qemu_del_nic(d->nic);
}
static NetClientInfo net_e1000_info = {
@@ -1281,7 +1326,7 @@ static int pci_e1000_init(PCIDevice *pci_dev)
d->nic = qemu_new_nic(&net_e1000_info, &d->conf,
object_get_typename(OBJECT(d)), d->dev.qdev.id, d);
- qemu_format_nic_info_str(&d->nic->nc, macaddr);
+ qemu_format_nic_info_str(qemu_get_queue(d->nic), macaddr);
add_boot_device_path(d->conf.bootindex, &pci_dev->qdev, "/ethernet-phy@0");
@@ -1319,7 +1364,7 @@ static void e1000_class_init(ObjectClass *klass, void *data)
dc->props = e1000_properties;
}
-static TypeInfo e1000_info = {
+static const TypeInfo e1000_info = {
.name = "e1000",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(E1000State),
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-22 02:45:05 +0000