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Diffstat (limited to 'hw/net/lan9118.c')
-rw-r--r--hw/net/lan9118.c135
1 files changed, 89 insertions, 46 deletions
diff --git a/hw/net/lan9118.c b/hw/net/lan9118.c
index b9032dac59..91d81b410b 100644
--- a/hw/net/lan9118.c
+++ b/hw/net/lan9118.c
@@ -12,28 +12,40 @@
#include "qemu/osdep.h"
#include "hw/sysbus.h"
+#include "migration/vmstate.h"
#include "net/net.h"
#include "net/eth.h"
-#include "hw/devices.h"
-#include "sysemu/sysemu.h"
+#include "hw/irq.h"
+#include "hw/net/lan9118.h"
#include "hw/ptimer.h"
+#include "hw/qdev-properties.h"
+#include "qapi/error.h"
#include "qemu/log.h"
+#include "qemu/module.h"
/* For crc32 */
#include <zlib.h>
+#include "qom/object.h"
//#define DEBUG_LAN9118
#ifdef DEBUG_LAN9118
#define DPRINTF(fmt, ...) \
do { printf("lan9118: " fmt , ## __VA_ARGS__); } while (0)
-#define BADF(fmt, ...) \
-do { hw_error("lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
#else
#define DPRINTF(fmt, ...) do {} while(0)
-#define BADF(fmt, ...) \
-do { fprintf(stderr, "lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
#endif
+/* The tx and rx fifo ports are a range of aliased 32-bit registers */
+#define RX_DATA_FIFO_PORT_FIRST 0x00
+#define RX_DATA_FIFO_PORT_LAST 0x1f
+#define TX_DATA_FIFO_PORT_FIRST 0x20
+#define TX_DATA_FIFO_PORT_LAST 0x3f
+
+#define RX_STATUS_FIFO_PORT 0x40
+#define RX_STATUS_FIFO_PEEK 0x44
+#define TX_STATUS_FIFO_PORT 0x48
+#define TX_STATUS_FIFO_PEEK 0x4c
+
#define CSR_ID_REV 0x50
#define CSR_IRQ_CFG 0x54
#define CSR_INT_STS 0x58
@@ -138,6 +150,12 @@ do { fprintf(stderr, "lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
#define GPT_TIMER_EN 0x20000000
+/*
+ * The MAC Interface Layer (MIL), within the MAC, contains a 2K Byte transmit
+ * and a 128 Byte receive FIFO which is separate from the TX and RX FIFOs.
+ */
+#define MIL_TXFIFO_SIZE 2048
+
enum tx_state {
TX_IDLE,
TX_B,
@@ -154,14 +172,14 @@ typedef struct {
int32_t pad;
int32_t fifo_used;
int32_t len;
- uint8_t data[2048];
+ uint8_t data[MIL_TXFIFO_SIZE];
} LAN9118Packet;
static const VMStateDescription vmstate_lan9118_packet = {
.name = "lan9118_packet",
.version_id = 1,
.minimum_version_id = 1,
- .fields = (VMStateField[]) {
+ .fields = (const VMStateField[]) {
VMSTATE_UINT32(state, LAN9118Packet),
VMSTATE_UINT32(cmd_a, LAN9118Packet),
VMSTATE_UINT32(cmd_b, LAN9118Packet),
@@ -170,15 +188,14 @@ static const VMStateDescription vmstate_lan9118_packet = {
VMSTATE_INT32(pad, LAN9118Packet),
VMSTATE_INT32(fifo_used, LAN9118Packet),
VMSTATE_INT32(len, LAN9118Packet),
- VMSTATE_UINT8_ARRAY(data, LAN9118Packet, 2048),
+ VMSTATE_UINT8_ARRAY(data, LAN9118Packet, MIL_TXFIFO_SIZE),
VMSTATE_END_OF_LIST()
}
};
-#define TYPE_LAN9118 "lan9118"
-#define LAN9118(obj) OBJECT_CHECK(lan9118_state, (obj), TYPE_LAN9118)
+OBJECT_DECLARE_SIMPLE_TYPE(lan9118_state, LAN9118)
-typedef struct {
+struct lan9118_state {
SysBusDevice parent_obj;
NICState *nic;
@@ -254,13 +271,13 @@ typedef struct {
uint32_t read_long;
uint32_t mode_16bit;
-} lan9118_state;
+};
static const VMStateDescription vmstate_lan9118 = {
.name = "lan9118",
.version_id = 2,
.minimum_version_id = 1,
- .fields = (VMStateField[]) {
+ .fields = (const VMStateField[]) {
VMSTATE_PTIMER(timer, lan9118_state),
VMSTATE_UINT32(irq_cfg, lan9118_state),
VMSTATE_UINT32(int_sts, lan9118_state),
@@ -446,8 +463,10 @@ static void lan9118_reset(DeviceState *d)
s->e2p_data = 0;
s->free_timer_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / 40;
+ ptimer_transaction_begin(s->timer);
ptimer_stop(s->timer);
ptimer_set_count(s->timer, 0xffff);
+ ptimer_transaction_commit(s->timer);
s->gpt_cfg = 0xffff;
s->mac_cr = MAC_CR_PRMS;
@@ -531,7 +550,7 @@ static ssize_t lan9118_receive(NetClientState *nc, const uint8_t *buf,
return -1;
}
- if (size >= 2048 || size < 14) {
+ if (size >= MIL_TXFIFO_SIZE || size < 14) {
return -1;
}
@@ -662,7 +681,7 @@ static void do_tx_packet(lan9118_state *s)
/* FIXME: Honor TX disable, and allow queueing of packets. */
if (s->phy_control & 0x4000) {
/* This assumes the receive routine doesn't touch the VLANClient. */
- lan9118_receive(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
+ qemu_receive_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
} else {
qemu_send_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
}
@@ -678,6 +697,14 @@ static void do_tx_packet(lan9118_state *s)
n = (s->tx_status_fifo_head + s->tx_status_fifo_used) & 511;
s->tx_status_fifo[n] = status;
s->tx_status_fifo_used++;
+
+ /*
+ * Generate TSFL interrupt if TX FIFO level exceeds the level
+ * specified in the FIFO_INT TX Status Level field.
+ */
+ if (s->tx_status_fifo_used > ((s->fifo_int >> 16) & 0xff)) {
+ s->int_sts |= TSFL_INT;
+ }
if (s->tx_status_fifo_used == 512) {
s->int_sts |= TSFF_INT;
/* TODO: Stop transmission. */
@@ -772,8 +799,22 @@ static void tx_fifo_push(lan9118_state *s, uint32_t val)
/* Documentation is somewhat unclear on the ordering of bytes
in FIFO words. Empirical results show it to be little-endian.
*/
- /* TODO: FIFO overflow checking. */
while (n--) {
+ if (s->txp->len == MIL_TXFIFO_SIZE) {
+ /*
+ * No more space in the FIFO. The datasheet is not
+ * precise about this case. We choose what is easiest
+ * to model: the packet is truncated, and TXE is raised.
+ *
+ * Note, it could be a fragmented packet, but we currently
+ * do not handle that (see earlier TX_B case).
+ */
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "MIL TX FIFO overrun, discarding %u byte%s\n",
+ n, n > 1 ? "s" : "");
+ s->int_sts |= TXE_INT;
+ break;
+ }
s->txp->data[s->txp->len] = val & 0xff;
s->txp->len++;
val >>= 8;
@@ -822,7 +863,8 @@ static uint32_t do_phy_read(lan9118_state *s, int reg)
case 30: /* Interrupt mask */
return s->phy_int_mask;
default:
- BADF("PHY read reg %d\n", reg);
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "do_phy_read: PHY read reg %d\n", reg);
return 0;
}
}
@@ -850,7 +892,8 @@ static void do_phy_write(lan9118_state *s, int reg, uint32_t val)
phy_update_irq(s);
break;
default:
- BADF("PHY write reg %d = 0x%04x\n", reg, val);
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "do_phy_write: PHY write reg %d = 0x%04x\n", reg, val);
}
}
@@ -925,10 +968,8 @@ static uint32_t do_mac_read(lan9118_state *s, int reg)
| (s->conf.macaddr.a[2] << 16) | (s->conf.macaddr.a[3] << 24);
case MAC_HASHH:
return s->mac_hashh;
- break;
case MAC_HASHL:
return s->mac_hashl;
- break;
case MAC_MII_ACC:
return s->mac_mii_acc;
case MAC_MII_DATA:
@@ -1015,7 +1056,8 @@ static void lan9118_writel(void *opaque, hwaddr offset,
offset &= 0xff;
//DPRINTF("Write reg 0x%02x = 0x%08x\n", (int)offset, val);
- if (offset >= 0x20 && offset < 0x40) {
+ if (offset >= TX_DATA_FIFO_PORT_FIRST &&
+ offset <= TX_DATA_FIFO_PORT_LAST) {
/* TX FIFO */
tx_fifo_push(s, val);
return;
@@ -1096,6 +1138,7 @@ static void lan9118_writel(void *opaque, hwaddr offset,
break;
case CSR_GPT_CFG:
if ((s->gpt_cfg ^ val) & GPT_TIMER_EN) {
+ ptimer_transaction_begin(s->timer);
if (val & GPT_TIMER_EN) {
ptimer_set_count(s->timer, val & 0xffff);
ptimer_run(s->timer, 0);
@@ -1103,6 +1146,7 @@ static void lan9118_writel(void *opaque, hwaddr offset,
ptimer_stop(s->timer);
ptimer_set_count(s->timer, 0xffff);
}
+ ptimer_transaction_commit(s->timer);
}
s->gpt_cfg = val & (GPT_TIMER_EN | 0xffff);
break;
@@ -1182,7 +1226,8 @@ static void lan9118_16bit_mode_write(void *opaque, hwaddr offset,
return;
}
- hw_error("lan9118_write: Bad size 0x%x\n", size);
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "lan9118_16bit_mode_write: Bad size 0x%x\n", size);
}
static uint64_t lan9118_readl(void *opaque, hwaddr offset,
@@ -1191,18 +1236,18 @@ static uint64_t lan9118_readl(void *opaque, hwaddr offset,
lan9118_state *s = (lan9118_state *)opaque;
//DPRINTF("Read reg 0x%02x\n", (int)offset);
- if (offset < 0x20) {
+ if (offset <= RX_DATA_FIFO_PORT_LAST) {
/* RX FIFO */
return rx_fifo_pop(s);
}
switch (offset) {
- case 0x40:
+ case RX_STATUS_FIFO_PORT:
return rx_status_fifo_pop(s);
- case 0x44:
- return s->rx_status_fifo[s->tx_status_fifo_head];
- case 0x48:
+ case RX_STATUS_FIFO_PEEK:
+ return s->rx_status_fifo[s->rx_status_fifo_head];
+ case TX_STATUS_FIFO_PORT:
return tx_status_fifo_pop(s);
- case 0x4c:
+ case TX_STATUS_FIFO_PEEK:
return s->tx_status_fifo[s->tx_status_fifo_head];
case CSR_ID_REV:
return 0x01180001;
@@ -1297,7 +1342,8 @@ static uint64_t lan9118_16bit_mode_read(void *opaque, hwaddr offset,
return lan9118_readl(opaque, offset, size);
}
- hw_error("lan9118_read: Bad size 0x%x\n", size);
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "lan9118_16bit_mode_read: Bad size 0x%x\n", size);
return 0;
}
@@ -1320,11 +1366,10 @@ static NetClientInfo net_lan9118_info = {
.link_status_changed = lan9118_set_link,
};
-static int lan9118_init1(SysBusDevice *sbd)
+static void lan9118_realize(DeviceState *dev, Error **errp)
{
- DeviceState *dev = DEVICE(sbd);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
lan9118_state *s = LAN9118(dev);
- QEMUBH *bh;
int i;
const MemoryRegionOps *mem_ops =
s->mode_16bit ? &lan9118_16bit_mem_ops : &lan9118_mem_ops;
@@ -1336,7 +1381,8 @@ static int lan9118_init1(SysBusDevice *sbd)
qemu_macaddr_default_if_unset(&s->conf.macaddr);
s->nic = qemu_new_nic(&net_lan9118_info, &s->conf,
- object_get_typename(OBJECT(dev)), dev->id, s);
+ object_get_typename(OBJECT(dev)), dev->id,
+ &dev->mem_reentrancy_guard, s);
qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
s->eeprom[0] = 0xa5;
for (i = 0; i < 6; i++) {
@@ -1345,12 +1391,11 @@ static int lan9118_init1(SysBusDevice *sbd)
s->pmt_ctrl = 1;
s->txp = &s->tx_packet;
- bh = qemu_bh_new(lan9118_tick, s);
- s->timer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
+ s->timer = ptimer_init(lan9118_tick, s, PTIMER_POLICY_LEGACY);
+ ptimer_transaction_begin(s->timer);
ptimer_set_freq(s->timer, 10000);
ptimer_set_limit(s->timer, 0xffff, 1);
-
- return 0;
+ ptimer_transaction_commit(s->timer);
}
static Property lan9118_properties[] = {
@@ -1362,12 +1407,11 @@ static Property lan9118_properties[] = {
static void lan9118_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
- k->init = lan9118_init1;
dc->reset = lan9118_reset;
- dc->props = lan9118_properties;
+ device_class_set_props(dc, lan9118_properties);
dc->vmsd = &vmstate_lan9118;
+ dc->realize = lan9118_realize;
}
static const TypeInfo lan9118_info = {
@@ -1384,16 +1428,15 @@ static void lan9118_register_types(void)
/* Legacy helper function. Should go away when machine config files are
implemented. */
-void lan9118_init(NICInfo *nd, uint32_t base, qemu_irq irq)
+void lan9118_init(uint32_t base, qemu_irq irq)
{
DeviceState *dev;
SysBusDevice *s;
- qemu_check_nic_model(nd, "lan9118");
- dev = qdev_create(NULL, TYPE_LAN9118);
- qdev_set_nic_properties(dev, nd);
- qdev_init_nofail(dev);
+ dev = qdev_new(TYPE_LAN9118);
+ qemu_configure_nic_device(dev, true, NULL);
s = SYS_BUS_DEVICE(dev);
+ sysbus_realize_and_unref(s, &error_fatal);
sysbus_mmio_map(s, 0, base);
sysbus_connect_irq(s, 0, irq);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 17:15:07 +0000