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-rw-r--r--hw/net/cadence_gem.c11
-rw-r--r--hw/net/lance.c3
-rw-r--r--hw/net/milkymist-minimac2.c6
-rw-r--r--hw/net/mipsnet.c3
-rw-r--r--hw/net/smc91c111.c2
-rw-r--r--hw/net/stellaris_enet.c312
-rw-r--r--hw/net/xgmac.c2
7 files changed, 194 insertions, 145 deletions
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
index cdb18253b6..47e70381fe 100644
--- a/hw/net/cadence_gem.c
+++ b/hw/net/cadence_gem.c
@@ -717,7 +717,6 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
rxbuf_ptr = (void *)buf;
} else {
unsigned crc_val;
- int crc_offset;
/* The application wants the FCS field, which QEMU does not provide.
* We must try and caclculate one.
@@ -727,12 +726,7 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
memset(rxbuf + size, 0, sizeof(rxbuf) - size);
rxbuf_ptr = rxbuf;
crc_val = cpu_to_le32(crc32(0, rxbuf, MAX(size, 60)));
- if (size < 60) {
- crc_offset = 60;
- } else {
- crc_offset = size;
- }
- memcpy(rxbuf + crc_offset, &crc_val, sizeof(crc_val));
+ memcpy(rxbuf + size, &crc_val, sizeof(crc_val));
bytes_to_copy += 4;
size += 4;
@@ -1257,8 +1251,7 @@ static const VMStateDescription vmstate_cadence_gem = {
.name = "cadence_gem",
.version_id = 2,
.minimum_version_id = 2,
- .minimum_version_id_old = 2,
- .fields = (VMStateField[]) {
+ .fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, GemState, GEM_MAXREG),
VMSTATE_UINT16_ARRAY(phy_regs, GemState, 32),
VMSTATE_UINT8(phy_loop, GemState),
diff --git a/hw/net/lance.c b/hw/net/lance.c
index fe18564e1e..7811a9edc2 100644
--- a/hw/net/lance.c
+++ b/hw/net/lance.c
@@ -110,8 +110,7 @@ static const VMStateDescription vmstate_lance = {
.name = "pcnet",
.version_id = 3,
.minimum_version_id = 2,
- .minimum_version_id_old = 2,
- .fields = (VMStateField []) {
+ .fields = (VMStateField[]) {
VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState),
VMSTATE_END_OF_LIST()
}
diff --git a/hw/net/milkymist-minimac2.c b/hw/net/milkymist-minimac2.c
index 1e9237984d..c023351c0d 100644
--- a/hw/net/milkymist-minimac2.c
+++ b/hw/net/milkymist-minimac2.c
@@ -492,8 +492,7 @@ static const VMStateDescription vmstate_milkymist_minimac2_mdio = {
.name = "milkymist-minimac2-mdio",
.version_id = 1,
.minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .fields = (VMStateField[]) {
+ .fields = (VMStateField[]) {
VMSTATE_INT32(last_clk, MilkymistMinimac2MdioState),
VMSTATE_INT32(count, MilkymistMinimac2MdioState),
VMSTATE_UINT32(data, MilkymistMinimac2MdioState),
@@ -509,8 +508,7 @@ static const VMStateDescription vmstate_milkymist_minimac2 = {
.name = "milkymist-minimac2",
.version_id = 1,
.minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .fields = (VMStateField[]) {
+ .fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, MilkymistMinimac2State, R_MAX),
VMSTATE_UINT16_ARRAY(phy_regs, MilkymistMinimac2State, R_PHY_MAX),
VMSTATE_STRUCT(mdio, MilkymistMinimac2State, 0,
diff --git a/hw/net/mipsnet.c b/hw/net/mipsnet.c
index e421b867e7..b26c369178 100644
--- a/hw/net/mipsnet.c
+++ b/hw/net/mipsnet.c
@@ -198,8 +198,7 @@ static const VMStateDescription vmstate_mipsnet = {
.name = "mipsnet",
.version_id = 0,
.minimum_version_id = 0,
- .minimum_version_id_old = 0,
- .fields = (VMStateField[]) {
+ .fields = (VMStateField[]) {
VMSTATE_UINT32(busy, MIPSnetState),
VMSTATE_UINT32(rx_count, MIPSnetState),
VMSTATE_UINT32(rx_read, MIPSnetState),
diff --git a/hw/net/smc91c111.c b/hw/net/smc91c111.c
index a8e29b3b42..d1dca8f4e2 100644
--- a/hw/net/smc91c111.c
+++ b/hw/net/smc91c111.c
@@ -54,7 +54,7 @@ static const VMStateDescription vmstate_smc91c111 = {
.name = "smc91c111",
.version_id = 1,
.minimum_version_id = 1,
- .fields = (VMStateField []) {
+ .fields = (VMStateField[]) {
VMSTATE_UINT16(tcr, smc91c111_state),
VMSTATE_UINT16(rcr, smc91c111_state),
VMSTATE_UINT16(cr, smc91c111_state),
diff --git a/hw/net/stellaris_enet.c b/hw/net/stellaris_enet.c
index d04e6a46f8..c9ee5d3f10 100644
--- a/hw/net/stellaris_enet.c
+++ b/hw/net/stellaris_enet.c
@@ -47,6 +47,11 @@ do { fprintf(stderr, "stellaris_enet: error: " fmt , ## __VA_ARGS__);} while (0)
OBJECT_CHECK(stellaris_enet_state, (obj), TYPE_STELLARIS_ENET)
typedef struct {
+ uint8_t data[2048];
+ uint32_t len;
+} StellarisEnetRxFrame;
+
+typedef struct {
SysBusDevice parent_obj;
uint32_t ris;
@@ -59,29 +64,159 @@ typedef struct {
uint32_t mtxd;
uint32_t mrxd;
uint32_t np;
- int tx_frame_len;
- int tx_fifo_len;
+ uint32_t tx_fifo_len;
uint8_t tx_fifo[2048];
/* Real hardware has a 2k fifo, which works out to be at most 31 packets.
We implement a full 31 packet fifo. */
- struct {
- uint8_t data[2048];
- int len;
- } rx[31];
- uint8_t *rx_fifo;
- int rx_fifo_len;
- int next_packet;
+ StellarisEnetRxFrame rx[31];
+ uint32_t rx_fifo_offset;
+ uint32_t next_packet;
NICState *nic;
NICConf conf;
qemu_irq irq;
MemoryRegion mmio;
} stellaris_enet_state;
+static const VMStateDescription vmstate_rx_frame = {
+ .name = "stellaris_enet/rx_frame",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8_ARRAY(data, StellarisEnetRxFrame, 2048),
+ VMSTATE_UINT32(len, StellarisEnetRxFrame),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int stellaris_enet_post_load(void *opaque, int version_id)
+{
+ stellaris_enet_state *s = opaque;
+ int i;
+
+ /* Sanitize inbound state. Note that next_packet is an index but
+ * np is a size; hence their valid upper bounds differ.
+ */
+ if (s->next_packet >= ARRAY_SIZE(s->rx)) {
+ return -1;
+ }
+
+ if (s->np > ARRAY_SIZE(s->rx)) {
+ return -1;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(s->rx); i++) {
+ if (s->rx[i].len > ARRAY_SIZE(s->rx[i].data)) {
+ return -1;
+ }
+ }
+
+ if (s->rx_fifo_offset > ARRAY_SIZE(s->rx[0].data) - 4) {
+ return -1;
+ }
+
+ if (s->tx_fifo_len > ARRAY_SIZE(s->tx_fifo)) {
+ return -1;
+ }
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_stellaris_enet = {
+ .name = "stellaris_enet",
+ .version_id = 2,
+ .minimum_version_id = 2,
+ .post_load = stellaris_enet_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(ris, stellaris_enet_state),
+ VMSTATE_UINT32(im, stellaris_enet_state),
+ VMSTATE_UINT32(rctl, stellaris_enet_state),
+ VMSTATE_UINT32(tctl, stellaris_enet_state),
+ VMSTATE_UINT32(thr, stellaris_enet_state),
+ VMSTATE_UINT32(mctl, stellaris_enet_state),
+ VMSTATE_UINT32(mdv, stellaris_enet_state),
+ VMSTATE_UINT32(mtxd, stellaris_enet_state),
+ VMSTATE_UINT32(mrxd, stellaris_enet_state),
+ VMSTATE_UINT32(np, stellaris_enet_state),
+ VMSTATE_UINT32(tx_fifo_len, stellaris_enet_state),
+ VMSTATE_UINT8_ARRAY(tx_fifo, stellaris_enet_state, 2048),
+ VMSTATE_STRUCT_ARRAY(rx, stellaris_enet_state, 31, 1,
+ vmstate_rx_frame, StellarisEnetRxFrame),
+ VMSTATE_UINT32(rx_fifo_offset, stellaris_enet_state),
+ VMSTATE_UINT32(next_packet, stellaris_enet_state),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static void stellaris_enet_update(stellaris_enet_state *s)
{
qemu_set_irq(s->irq, (s->ris & s->im) != 0);
}
+/* Return the data length of the packet currently being assembled
+ * in the TX fifo.
+ */
+static inline int stellaris_txpacket_datalen(stellaris_enet_state *s)
+{
+ return s->tx_fifo[0] | (s->tx_fifo[1] << 8);
+}
+
+/* Return true if the packet currently in the TX FIFO is complete,
+* ie the FIFO holds enough bytes for the data length, ethernet header,
+* payload and optionally CRC.
+*/
+static inline bool stellaris_txpacket_complete(stellaris_enet_state *s)
+{
+ int framelen = stellaris_txpacket_datalen(s);
+ framelen += 16;
+ if (!(s->tctl & SE_TCTL_CRC)) {
+ framelen += 4;
+ }
+ /* Cover the corner case of a 2032 byte payload with auto-CRC disabled:
+ * this requires more bytes than will fit in the FIFO. It's not totally
+ * clear how the h/w handles this, but if using threshold-based TX
+ * it will definitely try to transmit something.
+ */
+ framelen = MIN(framelen, ARRAY_SIZE(s->tx_fifo));
+ return s->tx_fifo_len >= framelen;
+}
+
+/* Return true if the TX FIFO threshold is enabled and the FIFO
+ * has filled enough to reach it.
+ */
+static inline bool stellaris_tx_thr_reached(stellaris_enet_state *s)
+{
+ return (s->thr < 0x3f &&
+ (s->tx_fifo_len >= 4 * (s->thr * 8 + 1)));
+}
+
+/* Send the packet currently in the TX FIFO */
+static void stellaris_enet_send(stellaris_enet_state *s)
+{
+ int framelen = stellaris_txpacket_datalen(s);
+
+ /* Ethernet header is in the FIFO but not in the datacount.
+ * We don't implement explicit CRC, so just ignore any
+ * CRC value in the FIFO.
+ */
+ framelen += 14;
+ if ((s->tctl & SE_TCTL_PADEN) && framelen < 60) {
+ memset(&s->tx_fifo[framelen + 2], 0, 60 - framelen);
+ framelen = 60;
+ }
+ /* This MIN will have no effect unless the FIFO data is corrupt
+ * (eg bad data from an incoming migration); otherwise the check
+ * on the datalen at the start of writing the data into the FIFO
+ * will have caught this. Silently write a corrupt half-packet,
+ * which is what the hardware does in FIFO underrun situations.
+ */
+ framelen = MIN(framelen, ARRAY_SIZE(s->tx_fifo) - 2);
+ qemu_send_packet(qemu_get_queue(s->nic), s->tx_fifo + 2, framelen);
+ s->tx_fifo_len = 0;
+ s->ris |= SE_INT_TXEMP;
+ stellaris_enet_update(s);
+ DPRINTF("Done TX\n");
+}
+
/* TODO: Implement MAC address filtering. */
static ssize_t stellaris_enet_receive(NetClientState *nc, const uint8_t *buf, size_t size)
{
@@ -97,7 +232,7 @@ static ssize_t stellaris_enet_receive(NetClientState *nc, const uint8_t *buf, si
return -1;
}
- DPRINTF("Received packet len=%d\n", size);
+ DPRINTF("Received packet len=%zu\n", size);
n = s->next_packet + s->np;
if (n >= 31)
n -= 31;
@@ -152,21 +287,21 @@ static uint64_t stellaris_enet_read(void *opaque, hwaddr offset,
case 0x0c: /* TCTL */
return s->tctl;
case 0x10: /* DATA */
- if (s->rx_fifo_len == 0) {
- if (s->np == 0) {
- BADF("RX underflow\n");
- return 0;
- }
- s->rx_fifo_len = s->rx[s->next_packet].len;
- s->rx_fifo = s->rx[s->next_packet].data;
- DPRINTF("RX FIFO start packet len=%d\n", s->rx_fifo_len);
+ {
+ uint8_t *rx_fifo;
+
+ if (s->np == 0) {
+ BADF("RX underflow\n");
+ return 0;
}
- val = s->rx_fifo[0] | (s->rx_fifo[1] << 8) | (s->rx_fifo[2] << 16)
- | (s->rx_fifo[3] << 24);
- s->rx_fifo += 4;
- s->rx_fifo_len -= 4;
- if (s->rx_fifo_len <= 0) {
- s->rx_fifo_len = 0;
+
+ rx_fifo = s->rx[s->next_packet].data + s->rx_fifo_offset;
+
+ val = rx_fifo[0] | (rx_fifo[1] << 8) | (rx_fifo[2] << 16)
+ | (rx_fifo[3] << 24);
+ s->rx_fifo_offset += 4;
+ if (s->rx_fifo_offset >= s->rx[s->next_packet].len) {
+ s->rx_fifo_offset = 0;
s->next_packet++;
if (s->next_packet >= 31)
s->next_packet = 0;
@@ -174,6 +309,7 @@ static uint64_t stellaris_enet_read(void *opaque, hwaddr offset,
DPRINTF("RX done np=%d\n", s->np);
}
return val;
+ }
case 0x14: /* IA0 */
return s->conf.macaddr.a[0] | (s->conf.macaddr.a[1] << 8)
| (s->conf.macaddr.a[2] << 16)
@@ -212,22 +348,23 @@ static void stellaris_enet_write(void *opaque, hwaddr offset,
switch (offset) {
case 0x00: /* IACK */
s->ris &= ~value;
- DPRINTF("IRQ ack %02x/%02x\n", value, s->ris);
+ DPRINTF("IRQ ack %02" PRIx64 "/%02x\n", value, s->ris);
stellaris_enet_update(s);
/* Clearing TXER also resets the TX fifo. */
- if (value & SE_INT_TXER)
- s->tx_frame_len = -1;
+ if (value & SE_INT_TXER) {
+ s->tx_fifo_len = 0;
+ }
break;
case 0x04: /* IM */
- DPRINTF("IRQ mask %02x/%02x\n", value, s->ris);
+ DPRINTF("IRQ mask %02" PRIx64 "/%02x\n", value, s->ris);
s->im = value;
stellaris_enet_update(s);
break;
case 0x08: /* RCTL */
s->rctl = value;
if (value & SE_RCTL_RSTFIFO) {
- s->rx_fifo_len = 0;
s->np = 0;
+ s->rx_fifo_offset = 0;
stellaris_enet_update(s);
}
break;
@@ -235,43 +372,26 @@ static void stellaris_enet_write(void *opaque, hwaddr offset,
s->tctl = value;
break;
case 0x10: /* DATA */
- if (s->tx_frame_len == -1) {
- s->tx_frame_len = value & 0xffff;
- if (s->tx_frame_len > 2032) {
- DPRINTF("TX frame too long (%d)\n", s->tx_frame_len);
- s->tx_frame_len = 0;
+ if (s->tx_fifo_len == 0) {
+ /* The first word is special, it contains the data length */
+ int framelen = value & 0xffff;
+ if (framelen > 2032) {
+ DPRINTF("TX frame too long (%d)\n", framelen);
s->ris |= SE_INT_TXER;
stellaris_enet_update(s);
- } else {
- DPRINTF("Start TX frame len=%d\n", s->tx_frame_len);
- /* The value written does not include the ethernet header. */
- s->tx_frame_len += 14;
- if ((s->tctl & SE_TCTL_CRC) == 0)
- s->tx_frame_len += 4;
- s->tx_fifo_len = 0;
- s->tx_fifo[s->tx_fifo_len++] = value >> 16;
- s->tx_fifo[s->tx_fifo_len++] = value >> 24;
+ break;
}
- } else {
+ }
+
+ if (s->tx_fifo_len + 4 <= ARRAY_SIZE(s->tx_fifo)) {
s->tx_fifo[s->tx_fifo_len++] = value;
s->tx_fifo[s->tx_fifo_len++] = value >> 8;
s->tx_fifo[s->tx_fifo_len++] = value >> 16;
s->tx_fifo[s->tx_fifo_len++] = value >> 24;
- if (s->tx_fifo_len >= s->tx_frame_len) {
- /* We don't implement explicit CRC, so just chop it off. */
- if ((s->tctl & SE_TCTL_CRC) == 0)
- s->tx_frame_len -= 4;
- if ((s->tctl & SE_TCTL_PADEN) && s->tx_frame_len < 60) {
- memset(&s->tx_fifo[s->tx_frame_len], 0, 60 - s->tx_frame_len);
- s->tx_fifo_len = 60;
- }
- qemu_send_packet(qemu_get_queue(s->nic), s->tx_fifo,
- s->tx_frame_len);
- s->tx_frame_len = -1;
- s->ris |= SE_INT_TXEMP;
- stellaris_enet_update(s);
- DPRINTF("Done TX\n");
- }
+ }
+
+ if (stellaris_tx_thr_reached(s) && stellaris_txpacket_complete(s)) {
+ stellaris_enet_send(s);
}
break;
case 0x14: /* IA0 */
@@ -299,9 +419,13 @@ static void stellaris_enet_write(void *opaque, hwaddr offset,
case 0x2c: /* MTXD */
s->mtxd = value & 0xff;
break;
+ case 0x38: /* TR */
+ if (value & 1) {
+ stellaris_enet_send(s);
+ }
+ break;
case 0x30: /* MRXD */
case 0x34: /* NP */
- case 0x38: /* TR */
/* Ignored. */
case 0x3c: /* Undocuented: Timestamp? */
/* Ignored. */
@@ -324,68 +448,7 @@ static void stellaris_enet_reset(stellaris_enet_state *s)
s->im = SE_INT_PHY | SE_INT_MD | SE_INT_RXER | SE_INT_FOV | SE_INT_TXEMP
| SE_INT_TXER | SE_INT_RX;
s->thr = 0x3f;
- s->tx_frame_len = -1;
-}
-
-static void stellaris_enet_save(QEMUFile *f, void *opaque)
-{
- stellaris_enet_state *s = (stellaris_enet_state *)opaque;
- int i;
-
- qemu_put_be32(f, s->ris);
- qemu_put_be32(f, s->im);
- qemu_put_be32(f, s->rctl);
- qemu_put_be32(f, s->tctl);
- qemu_put_be32(f, s->thr);
- qemu_put_be32(f, s->mctl);
- qemu_put_be32(f, s->mdv);
- qemu_put_be32(f, s->mtxd);
- qemu_put_be32(f, s->mrxd);
- qemu_put_be32(f, s->np);
- qemu_put_be32(f, s->tx_frame_len);
- qemu_put_be32(f, s->tx_fifo_len);
- qemu_put_buffer(f, s->tx_fifo, sizeof(s->tx_fifo));
- for (i = 0; i < 31; i++) {
- qemu_put_be32(f, s->rx[i].len);
- qemu_put_buffer(f, s->rx[i].data, sizeof(s->rx[i].data));
-
- }
- qemu_put_be32(f, s->next_packet);
- qemu_put_be32(f, s->rx_fifo - s->rx[s->next_packet].data);
- qemu_put_be32(f, s->rx_fifo_len);
-}
-
-static int stellaris_enet_load(QEMUFile *f, void *opaque, int version_id)
-{
- stellaris_enet_state *s = (stellaris_enet_state *)opaque;
- int i;
-
- if (version_id != 1)
- return -EINVAL;
-
- s->ris = qemu_get_be32(f);
- s->im = qemu_get_be32(f);
- s->rctl = qemu_get_be32(f);
- s->tctl = qemu_get_be32(f);
- s->thr = qemu_get_be32(f);
- s->mctl = qemu_get_be32(f);
- s->mdv = qemu_get_be32(f);
- s->mtxd = qemu_get_be32(f);
- s->mrxd = qemu_get_be32(f);
- s->np = qemu_get_be32(f);
- s->tx_frame_len = qemu_get_be32(f);
- s->tx_fifo_len = qemu_get_be32(f);
- qemu_get_buffer(f, s->tx_fifo, sizeof(s->tx_fifo));
- for (i = 0; i < 31; i++) {
- s->rx[i].len = qemu_get_be32(f);
- qemu_get_buffer(f, s->rx[i].data, sizeof(s->rx[i].data));
-
- }
- s->next_packet = qemu_get_be32(f);
- s->rx_fifo = s->rx[s->next_packet].data + qemu_get_be32(f);
- s->rx_fifo_len = qemu_get_be32(f);
-
- return 0;
+ s->tx_fifo_len = 0;
}
static void stellaris_enet_cleanup(NetClientState *nc)
@@ -419,8 +482,6 @@ static int stellaris_enet_init(SysBusDevice *sbd)
qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
stellaris_enet_reset(s);
- register_savevm(dev, "stellaris_enet", -1, 1,
- stellaris_enet_save, stellaris_enet_load, s);
return 0;
}
@@ -428,8 +489,6 @@ static void stellaris_enet_unrealize(DeviceState *dev, Error **errp)
{
stellaris_enet_state *s = STELLARIS_ENET(dev);
- unregister_savevm(DEVICE(s), "stellaris_enet", s);
-
memory_region_destroy(&s->mmio);
}
@@ -446,6 +505,7 @@ static void stellaris_enet_class_init(ObjectClass *klass, void *data)
k->init = stellaris_enet_init;
dc->unrealize = stellaris_enet_unrealize;
dc->props = stellaris_enet_properties;
+ dc->vmsd = &vmstate_stellaris_enet;
}
static const TypeInfo stellaris_enet_info = {
diff --git a/hw/net/xgmac.c b/hw/net/xgmac.c
index 88349ac6a2..aeffcb58b7 100644
--- a/hw/net/xgmac.c
+++ b/hw/net/xgmac.c
@@ -156,7 +156,7 @@ static const VMStateDescription vmstate_rxtx_stats = {
.name = "xgmac_stats",
.version_id = 1,
.minimum_version_id = 1,
- .fields = (VMStateField[]) {
+ .fields = (VMStateField[]) {
VMSTATE_UINT64(rx_bytes, RxTxStats),
VMSTATE_UINT64(tx_bytes, RxTxStats),
VMSTATE_UINT64(rx, RxTxStats),
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-17 02:01:52 +0000