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-rw-r--r--hw/lan9118.c1093
1 files changed, 1093 insertions, 0 deletions
diff --git a/hw/lan9118.c b/hw/lan9118.c
new file mode 100644
index 0000000000..6394f3a73d
--- /dev/null
+++ b/hw/lan9118.c
@@ -0,0 +1,1093 @@
+/*
+ * SMSC LAN9118 Ethernet interface emulation
+ *
+ * Copyright (c) 2009 CodeSourcery, LLC.
+ * Written by Paul Brook
+ *
+ * This code is licenced under the GNU GPL v2
+ */
+
+#include "sysbus.h"
+#include "net.h"
+#include "devices.h"
+/* For crc32 */
+#include <zlib.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
+
+#define CSR_ID_REV 0x50
+#define CSR_IRQ_CFG 0x54
+#define CSR_INT_STS 0x58
+#define CSR_INT_EN 0x5c
+#define CSR_BYTE_TEST 0x64
+#define CSR_FIFO_INT 0x68
+#define CSR_RX_CFG 0x6c
+#define CSR_TX_CFG 0x70
+#define CSR_HW_CFG 0x74
+#define CSR_RX_DP_CTRL 0x78
+#define CSR_RX_FIFO_INF 0x7c
+#define CSR_TX_FIFO_INF 0x80
+#define CSR_PMT_CTRL 0x84
+#define CSR_GPIO_CFG 0x88
+#define CSR_GPT_CFG 0x8c /* TODO */
+#define CSR_GPT_CNT 0x90 /* TODO */
+#define CSR_WORD_SWAP 0x98
+#define CSR_FREE_RUN 0x9c
+#define CSR_RX_DROP 0xa0
+#define CSR_MAC_CSR_CMD 0xa4
+#define CSR_MAC_CSR_DATA 0xa8
+#define CSR_AFC_CFG 0xac
+#define CSR_E2P_CMD 0xb0
+#define CSR_E2P_DATA 0xb4
+
+/* IRQ_CFG */
+#define IRQ_EN 0x00000100
+#define IRQ_POL 0x00000010
+#define IRQ_TYPE 0x00000001
+
+/* INT_STS/INT_EN */
+#define SW_INT 0x80000000
+#define TXSTOP_INT 0x02000000
+#define RXSTOP_INT 0x01000000
+#define RXDFH_INT 0x00800000
+#define TX_IOC_INT 0x00200000
+#define RXD_INT 0x00100000
+#define GPT_INT 0x00080000
+#define PHY_INT 0x00040000
+#define PME_INT 0x00020000
+#define TXSO_INT 0x00010000
+#define RWT_INT 0x00008000
+#define RXE_INT 0x00004000
+#define TXE_INT 0x00002000
+#define TDFU_INT 0x00000800
+#define TDFO_INT 0x00000400
+#define TDFA_INT 0x00000200
+#define TSFF_INT 0x00000100
+#define TSFL_INT 0x00000080
+#define RXDF_INT 0x00000040
+#define RDFL_INT 0x00000020
+#define RSFF_INT 0x00000010
+#define RSFL_INT 0x00000008
+#define GPIO2_INT 0x00000004
+#define GPIO1_INT 0x00000002
+#define GPIO0_INT 0x00000001
+#define RESERVED_INT 0x7c001000
+
+#define MAC_CR 1
+#define MAC_ADDRH 2
+#define MAC_ADDRL 3
+#define MAC_HASHH 4
+#define MAC_HASHL 5
+#define MAC_MII_ACC 6
+#define MAC_MII_DATA 7
+#define MAC_FLOW 8
+#define MAC_VLAN1 9 /* TODO */
+#define MAC_VLAN2 10 /* TODO */
+#define MAC_WUFF 11 /* TODO */
+#define MAC_WUCSR 12 /* TODO */
+
+#define MAC_CR_RXALL 0x80000000
+#define MAC_CR_RCVOWN 0x00800000
+#define MAC_CR_LOOPBK 0x00200000
+#define MAC_CR_FDPX 0x00100000
+#define MAC_CR_MCPAS 0x00080000
+#define MAC_CR_PRMS 0x00040000
+#define MAC_CR_INVFILT 0x00020000
+#define MAC_CR_PASSBAD 0x00010000
+#define MAC_CR_HO 0x00008000
+#define MAC_CR_HPFILT 0x00002000
+#define MAC_CR_LCOLL 0x00001000
+#define MAC_CR_BCAST 0x00000800
+#define MAC_CR_DISRTY 0x00000400
+#define MAC_CR_PADSTR 0x00000100
+#define MAC_CR_BOLMT 0x000000c0
+#define MAC_CR_DFCHK 0x00000020
+#define MAC_CR_TXEN 0x00000008
+#define MAC_CR_RXEN 0x00000004
+#define MAC_CR_RESERVED 0x7f404213
+
+enum tx_state {
+ TX_IDLE,
+ TX_B,
+ TX_DATA
+};
+
+typedef struct {
+ enum tx_state state;
+ uint32_t cmd_a;
+ uint32_t cmd_b;
+ int buffer_size;
+ int offset;
+ int pad;
+ int fifo_used;
+ int len;
+ uint8_t data[2048];
+} LAN9118Packet;
+
+typedef struct {
+ SysBusDevice busdev;
+ VLANClientState *vc;
+ NICConf conf;
+ qemu_irq irq;
+ int mmio_index;
+
+ uint32_t irq_cfg;
+ uint32_t int_sts;
+ uint32_t int_en;
+ uint32_t fifo_int;
+ uint32_t rx_cfg;
+ uint32_t tx_cfg;
+ uint32_t hw_cfg;
+ uint32_t pmt_ctrl;
+ uint32_t gpio_cfg;
+ uint32_t word_swap;
+ uint32_t free_timer_start;
+ uint32_t mac_cmd;
+ uint32_t mac_data;
+ uint32_t afc_cfg;
+ uint32_t e2p_cmd;
+ uint32_t e2p_data;
+
+ uint32_t mac_cr;
+ uint32_t mac_hashh;
+ uint32_t mac_hashl;
+ uint32_t mac_mii_acc;
+ uint32_t mac_mii_data;
+ uint32_t mac_flow;
+
+ uint32_t phy_status;
+ uint32_t phy_control;
+ uint32_t phy_advertise;
+
+ int eeprom_writable;
+ uint8_t eeprom[8];
+
+ int tx_fifo_size;
+ LAN9118Packet *txp;
+ LAN9118Packet tx_packet;
+
+ int tx_status_fifo_used;
+ int tx_status_fifo_head;
+ uint32_t tx_status_fifo[512];
+
+ int rx_status_fifo_size;
+ int rx_status_fifo_used;
+ int rx_status_fifo_head;
+ uint32_t rx_status_fifo[896];
+ int rx_fifo_size;
+ int rx_fifo_used;
+ int rx_fifo_head;
+ uint32_t rx_fifo[3360];
+ int rx_packet_size_head;
+ int rx_packet_size_tail;
+ int rx_packet_size[1024];
+
+ int rxp_offset;
+ int rxp_size;
+ int rxp_pad;
+} lan9118_state;
+
+static void lan9118_update(lan9118_state *s)
+{
+ int level;
+
+ /* TODO: Implement FIFO level IRQs. */
+ level = (s->int_sts & s->int_en) != 0;
+ if ((s->irq_cfg & IRQ_EN) == 0) {
+ level = 0;
+ }
+ qemu_set_irq(s->irq, level);
+}
+
+static void lan9118_mac_changed(lan9118_state *s)
+{
+ qemu_format_nic_info_str(s->vc, s->conf.macaddr.a);
+}
+
+static void lan9118_reload_eeprom(lan9118_state *s)
+{
+ int i;
+ if (s->eeprom[0] != 0xa5) {
+ s->e2p_cmd &= ~0x10;
+ DPRINTF("MACADDR load failed\n");
+ return;
+ }
+ for (i = 0; i < 6; i++) {
+ s->conf.macaddr.a[i] = s->eeprom[i + 1];
+ }
+ s->e2p_cmd |= 0x10;
+ DPRINTF("MACADDR loaded from eeprom\n");
+ lan9118_mac_changed(s);
+}
+
+static void phy_update_link(lan9118_state *s)
+{
+ /* Autonegotiation status mirrors link status. */
+ if (s->vc->link_down) {
+ s->phy_status &= ~0x0024;
+ } else {
+ s->phy_status |= 0x0024;
+ }
+}
+
+static void lan9118_set_link(VLANClientState *vc)
+{
+ phy_update_link(vc->opaque);
+}
+
+static void phy_reset(lan9118_state *s)
+{
+ s->phy_status = 0x7805;
+ s->phy_control = 0x3000;
+ s->phy_advertise = 0x01e1;
+ phy_update_link(s);
+}
+
+static void lan9118_reset(DeviceState *d)
+{
+ lan9118_state *s = FROM_SYSBUS(lan9118_state, sysbus_from_qdev(d));
+
+ s->irq_cfg &= ~(IRQ_TYPE | IRQ_POL);
+ s->int_sts = 0;
+ s->int_en = 0;
+ s->fifo_int = 0x48000000;
+ s->rx_cfg = 0;
+ s->tx_cfg = 0;
+ s->hw_cfg = 0x00050000;
+ s->pmt_ctrl &= 0x45;
+ s->gpio_cfg = 0;
+ s->txp->fifo_used = 0;
+ s->txp->state = TX_IDLE;
+ s->txp->cmd_a = 0xffffffffu;
+ s->txp->cmd_b = 0xffffffffu;
+ s->txp->len = 0;
+ s->txp->fifo_used = 0;
+ s->tx_fifo_size = 4608;
+ s->tx_status_fifo_used = 0;
+ s->rx_status_fifo_size = 704;
+ s->rx_fifo_size = 2640;
+ s->rx_fifo_used = 0;
+ s->rx_status_fifo_size = 176;
+ s->rx_status_fifo_used = 0;
+ s->rxp_offset = 0;
+ s->rxp_size = 0;
+ s->rxp_pad = 0;
+ s->rx_packet_size_tail = s->rx_packet_size_head;
+ s->rx_packet_size[s->rx_packet_size_head] = 0;
+ s->mac_cmd = 0;
+ s->mac_data = 0;
+ s->afc_cfg = 0;
+ s->e2p_cmd = 0;
+ s->e2p_data = 0;
+ s->free_timer_start = qemu_get_clock(vm_clock) / 40;
+
+ s->mac_cr = MAC_CR_PRMS;
+ s->mac_hashh = 0;
+ s->mac_hashl = 0;
+ s->mac_mii_acc = 0;
+ s->mac_mii_data = 0;
+ s->mac_flow = 0;
+
+ phy_reset(s);
+
+ s->eeprom_writable = 0;
+ lan9118_reload_eeprom(s);
+}
+
+static int lan9118_can_receive(VLANClientState *vc)
+{
+ return 1;
+}
+
+static void rx_fifo_push(lan9118_state *s, uint32_t val)
+{
+ int fifo_pos;
+ fifo_pos = s->rx_fifo_head + s->rx_fifo_used;
+ if (fifo_pos >= s->rx_fifo_size)
+ fifo_pos -= s->rx_fifo_size;
+ s->rx_fifo[fifo_pos] = val;
+ s->rx_fifo_used++;
+}
+
+/* Return nonzero if the packet is accepted by the filter. */
+static int lan9118_filter(lan9118_state *s, const uint8_t *addr)
+{
+ int multicast;
+ uint32_t hash;
+
+ if (s->mac_cr & MAC_CR_PRMS) {
+ return 1;
+ }
+ if (addr[0] == 0xff && addr[1] == 0xff && addr[2] == 0xff &&
+ addr[3] == 0xff && addr[4] == 0xff && addr[5] == 0xff) {
+ return (s->mac_cr & MAC_CR_BCAST) == 0;
+ }
+
+ multicast = addr[0] & 1;
+ if (multicast &&s->mac_cr & MAC_CR_MCPAS) {
+ return 1;
+ }
+ if (multicast ? (s->mac_cr & MAC_CR_HPFILT) == 0
+ : (s->mac_cr & MAC_CR_HO) == 0) {
+ /* Exact matching. */
+ hash = memcmp(addr, s->conf.macaddr.a, 6);
+ if (s->mac_cr & MAC_CR_INVFILT) {
+ return hash != 0;
+ } else {
+ return hash == 0;
+ }
+ } else {
+ /* Hash matching */
+ hash = (crc32(~0, addr, 6) >> 26);
+ if (hash & 0x20) {
+ return (s->mac_hashh >> (hash & 0x1f)) & 1;
+ } else {
+ return (s->mac_hashl >> (hash & 0x1f)) & 1;
+ }
+ }
+}
+
+static ssize_t lan9118_receive(VLANClientState *vc, const uint8_t *buf,
+ size_t size)
+{
+ lan9118_state *s = vc->opaque;
+ int fifo_len;
+ int offset;
+ int src_pos;
+ int n;
+ int filter;
+ uint32_t val;
+ uint32_t crc;
+ uint32_t status;
+
+ if ((s->mac_cr & MAC_CR_RXEN) == 0) {
+ return -1;
+ }
+
+ if (size >= 2048 || size < 14) {
+ return -1;
+ }
+
+ /* TODO: Implement FIFO overflow notification. */
+ if (s->rx_status_fifo_used == s->rx_status_fifo_size) {
+ return -1;
+ }
+
+ filter = lan9118_filter(s, buf);
+ if (!filter && (s->mac_cr & MAC_CR_RXALL) == 0) {
+ return size;
+ }
+
+ offset = (s->rx_cfg >> 8) & 0x1f;
+ n = offset & 3;
+ fifo_len = (size + n + 3) >> 2;
+ /* Add a word for the CRC. */
+ fifo_len++;
+ if (s->rx_fifo_size - s->rx_fifo_used < fifo_len) {
+ return -1;
+ }
+
+ DPRINTF("Got packet len:%d fifo:%d filter:%s\n",
+ (int)size, fifo_len, filter ? "pass" : "fail");
+ val = 0;
+ crc = bswap32(crc32(~0, buf, size));
+ for (src_pos = 0; src_pos < size; src_pos++) {
+ val = (val >> 8) | ((uint32_t)buf[src_pos] << 24);
+ n++;
+ if (n == 4) {
+ n = 0;
+ rx_fifo_push(s, val);
+ val = 0;
+ }
+ }
+ if (n) {
+ val >>= ((4 - n) * 8);
+ val |= crc << (n * 8);
+ rx_fifo_push(s, val);
+ val = crc >> ((4 - n) * 8);
+ rx_fifo_push(s, val);
+ } else {
+ rx_fifo_push(s, crc);
+ }
+ n = s->rx_status_fifo_head + s->rx_status_fifo_used;
+ if (n >= s->rx_status_fifo_size) {
+ n -= s->rx_status_fifo_size;
+ }
+ s->rx_packet_size[s->rx_packet_size_tail] = fifo_len;
+ s->rx_packet_size_tail = (s->rx_packet_size_tail + 1023) & 1023;
+ s->rx_status_fifo_used++;
+
+ status = (size + 4) << 16;
+ if (buf[0] == 0xff && buf[1] == 0xff && buf[2] == 0xff &&
+ buf[3] == 0xff && buf[4] == 0xff && buf[5] == 0xff) {
+ status |= 0x00002000;
+ } else if (buf[0] & 1) {
+ status |= 0x00000400;
+ }
+ if (!filter) {
+ status |= 0x40000000;
+ }
+ s->rx_status_fifo[n] = status;
+
+ if (s->rx_status_fifo_used > (s->fifo_int & 0xff)) {
+ s->int_sts |= RSFL_INT;
+ }
+ lan9118_update(s);
+
+ return size;
+}
+
+static uint32_t rx_fifo_pop(lan9118_state *s)
+{
+ int n;
+ uint32_t val;
+
+ if (s->rxp_size == 0 && s->rxp_pad == 0) {
+ s->rxp_size = s->rx_packet_size[s->rx_packet_size_head];
+ s->rx_packet_size[s->rx_packet_size_head] = 0;
+ if (s->rxp_size != 0) {
+ s->rx_packet_size_head = (s->rx_packet_size_head + 1023) & 1023;
+ s->rxp_offset = (s->rx_cfg >> 10) & 7;
+ n = s->rxp_offset + s->rxp_size;
+ switch (s->rx_cfg >> 30) {
+ case 1:
+ n = (-n) & 3;
+ break;
+ case 2:
+ n = (-n) & 7;
+ break;
+ default:
+ n = 0;
+ break;
+ }
+ s->rxp_pad = n;
+ DPRINTF("Pop packet size:%d offset:%d pad: %d\n",
+ s->rxp_size, s->rxp_offset, s->rxp_pad);
+ }
+ }
+ if (s->rxp_offset > 0) {
+ s->rxp_offset--;
+ val = 0;
+ } else if (s->rxp_size > 0) {
+ s->rxp_size--;
+ val = s->rx_fifo[s->rx_fifo_head++];
+ if (s->rx_fifo_head >= s->rx_fifo_size) {
+ s->rx_fifo_head -= s->rx_fifo_size;
+ }
+ s->rx_fifo_used--;
+ } else if (s->rxp_pad > 0) {
+ s->rxp_pad--;
+ val = 0;
+ } else {
+ DPRINTF("RX underflow\n");
+ s->int_sts |= RXE_INT;
+ val = 0;
+ }
+ lan9118_update(s);
+ return val;
+}
+
+static void do_tx_packet(lan9118_state *s)
+{
+ int n;
+ uint32_t status;
+
+ /* 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(s->vc, s->txp->data, s->txp->len);
+ } else {
+ qemu_send_packet(s->vc, s->txp->data, s->txp->len);
+ }
+ s->txp->fifo_used = 0;
+
+ if (s->tx_status_fifo_used == 512) {
+ /* Status FIFO full */
+ return;
+ }
+ /* Add entry to status FIFO. */
+ status = s->txp->cmd_b & 0xffff0000u;
+ DPRINTF("Sent packet tag:%04x len %d\n", status >> 16, s->txp->len);
+ n = (s->tx_status_fifo_head + s->tx_status_fifo_used) & 511;
+ s->tx_status_fifo[n] = status;
+ s->tx_status_fifo_used++;
+ if (s->tx_status_fifo_used == 512) {
+ s->int_sts |= TSFF_INT;
+ /* TODO: Stop transmission. */
+ }
+}
+
+static uint32_t rx_status_fifo_pop(lan9118_state *s)
+{
+ uint32_t val;
+
+ val = s->rx_status_fifo[s->rx_status_fifo_head];
+ if (s->rx_status_fifo_used != 0) {
+ s->rx_status_fifo_used--;
+ s->rx_status_fifo_head++;
+ if (s->rx_status_fifo_head >= s->rx_status_fifo_size) {
+ s->rx_status_fifo_head -= s->rx_status_fifo_size;
+ }
+ /* ??? What value should be returned when the FIFO is empty? */
+ DPRINTF("RX status pop 0x%08x\n", val);
+ }
+ return val;
+}
+
+static uint32_t tx_status_fifo_pop(lan9118_state *s)
+{
+ uint32_t val;
+
+ val = s->tx_status_fifo[s->tx_status_fifo_head];
+ if (s->tx_status_fifo_used != 0) {
+ s->tx_status_fifo_used--;
+ s->tx_status_fifo_head = (s->tx_status_fifo_head + 1) & 511;
+ /* ??? What value should be returned when the FIFO is empty? */
+ }
+ return val;
+}
+
+static void tx_fifo_push(lan9118_state *s, uint32_t val)
+{
+ int n;
+
+ if (s->txp->fifo_used == s->tx_fifo_size) {
+ s->int_sts |= TDFO_INT;
+ return;
+ }
+ switch (s->txp->state) {
+ case TX_IDLE:
+ s->txp->cmd_a = val & 0x831f37ff;
+ s->txp->fifo_used++;
+ s->txp->state = TX_B;
+ break;
+ case TX_B:
+ if (s->txp->cmd_a & 0x2000) {
+ /* First segment */
+ s->txp->cmd_b = val;
+ s->txp->fifo_used++;
+ s->txp->buffer_size = s->txp->cmd_a & 0x7ff;
+ s->txp->offset = (s->txp->cmd_a >> 16) & 0x1f;
+ /* End alignment does not include command words. */
+ n = (s->txp->buffer_size + s->txp->offset + 3) >> 2;
+ switch ((n >> 24) & 3) {
+ case 1:
+ n = (-n) & 3;
+ break;
+ case 2:
+ n = (-n) & 7;
+ break;
+ default:
+ n = 0;
+ }
+ s->txp->pad = n;
+ s->txp->len = 0;
+ }
+ DPRINTF("Block len:%d offset:%d pad:%d cmd %08x\n",
+ s->txp->buffer_size, s->txp->offset, s->txp->pad,
+ s->txp->cmd_a);
+ s->txp->state = TX_DATA;
+ break;
+ case TX_DATA:
+ if (s->txp->offset >= 4) {
+ s->txp->offset -= 4;
+ break;
+ }
+ if (s->txp->buffer_size <= 0 && s->txp->pad != 0) {
+ s->txp->pad--;
+ } else {
+ n = 4;
+ while (s->txp->offset) {
+ val >>= 8;
+ n--;
+ s->txp->offset--;
+ }
+ /* 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--) {
+ s->txp->data[s->txp->len] = val & 0xff;
+ s->txp->len++;
+ val >>= 8;
+ s->txp->buffer_size--;
+ }
+ s->txp->fifo_used++;
+ }
+ if (s->txp->buffer_size <= 0 && s->txp->pad == 0) {
+ if (s->txp->cmd_a & 0x1000) {
+ do_tx_packet(s);
+ }
+ if (s->txp->cmd_a & 0x80000000) {
+ s->int_sts |= TX_IOC_INT;
+ }
+ s->txp->state = TX_IDLE;
+ }
+ break;
+ }
+}
+
+static uint32_t do_phy_read(lan9118_state *s, int reg)
+{
+ switch (reg) {
+ case 0: /* Basic Control */
+ return s->phy_control;
+ case 1: /* Basic Status */
+ return s->phy_status;
+ case 2: /* ID1 */
+ return 0x0007;
+ case 3: /* ID2 */
+ return 0xc0d1;
+ case 4: /* Auto-neg advertisment */
+ return s->phy_advertise;
+ case 5: /* Auto-neg Link Partner Ability */
+ return 0x0f71;
+ case 6: /* Auto-neg Expansion */
+ return 1;
+ /* TODO 17, 18, 27, 29, 30, 31 */
+ default:
+ BADF("PHY read reg %d\n", reg);
+ return 0;
+ }
+}
+
+static void do_phy_write(lan9118_state *s, int reg, uint32_t val)
+{
+ switch (reg) {
+ case 0: /* Basic Control */
+ if (val & 0x8000) {
+ phy_reset(s);
+ break;
+ }
+ s->phy_control = val & 0x7980;
+ /* Complete autonegotiation imediately. */
+ if (val & 0x1000) {
+ s->phy_status |= 0x0020;
+ }
+ break;
+ case 4: /* Auto-neg advertisment */
+ s->phy_advertise = (val & 0x2d7f) | 0x80;
+ break;
+ /* TODO 17, 18, 27, 29, 30, 31 */
+ default:
+ BADF("PHY write reg %d = 0x%04x\n", reg, val);
+ }
+}
+
+static void do_mac_write(lan9118_state *s, int reg, uint32_t val)
+{
+ switch (reg) {
+ case MAC_CR:
+ if ((s->mac_cr & MAC_CR_RXEN) != 0 && (val & MAC_CR_RXEN) == 0) {
+ s->int_sts |= RXSTOP_INT;
+ }
+ s->mac_cr = val & ~MAC_CR_RESERVED;
+ DPRINTF("MAC_CR: %08x\n", val);
+ break;
+ case MAC_ADDRH:
+ s->conf.macaddr.a[4] = val & 0xff;
+ s->conf.macaddr.a[5] = (val >> 8) & 0xff;
+ lan9118_mac_changed(s);
+ break;
+ case MAC_ADDRL:
+ s->conf.macaddr.a[0] = val & 0xff;
+ s->conf.macaddr.a[1] = (val >> 8) & 0xff;
+ s->conf.macaddr.a[2] = (val >> 16) & 0xff;
+ s->conf.macaddr.a[3] = (val >> 24) & 0xff;
+ lan9118_mac_changed(s);
+ break;
+ case MAC_HASHH:
+ s->mac_hashh = val;
+ break;
+ case MAC_HASHL:
+ s->mac_hashl = val;
+ break;
+ case MAC_MII_ACC:
+ s->mac_mii_acc = val & 0xffc2;
+ if (val & 2) {
+ DPRINTF("PHY write %d = 0x%04x\n",
+ (val >> 6) & 0x1f, s->mac_mii_data);
+ do_phy_write(s, (val >> 6) & 0x1f, s->mac_mii_data);
+ } else {
+ s->mac_mii_data = do_phy_read(s, (val >> 6) & 0x1f);
+ DPRINTF("PHY read %d = 0x%04x\n",
+ (val >> 6) & 0x1f, s->mac_mii_data);
+ }
+ break;
+ case MAC_MII_DATA:
+ s->mac_mii_data = val & 0xffff;
+ break;
+ case MAC_FLOW:
+ s->mac_flow = val & 0xffff0000;
+ break;
+ default:
+ hw_error("lan9118: Unimplemented MAC register write: %d = 0x%x\n",
+ s->mac_cmd & 0xf, val);
+ }
+}
+
+static uint32_t do_mac_read(lan9118_state *s, int reg)
+{
+ switch (reg) {
+ case MAC_CR:
+ return s->mac_cr;
+ case MAC_ADDRH:
+ return s->conf.macaddr.a[4] | (s->conf.macaddr.a[5] << 8);
+ case MAC_ADDRL:
+ return s->conf.macaddr.a[0] | (s->conf.macaddr.a[1] << 8)
+ | (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:
+ return s->mac_mii_data;
+ case MAC_FLOW:
+ return s->mac_flow;
+ default:
+ hw_error("lan9118: Unimplemented MAC register read: %d\n",
+ s->mac_cmd & 0xf);
+ }
+}
+
+static void lan9118_eeprom_cmd(lan9118_state *s, int cmd, int addr)
+{
+ s->e2p_cmd = (s->e2p_cmd & 0x10) | (cmd << 28) | addr;
+ switch (cmd) {
+ case 0:
+ s->e2p_data = s->eeprom[addr];
+ DPRINTF("EEPROM Read %d = 0x%02x\n", addr, s->e2p_data);
+ break;
+ case 1:
+ s->eeprom_writable = 0;
+ DPRINTF("EEPROM Write Disable\n");
+ break;
+ case 2: /* EWEN */
+ s->eeprom_writable = 1;
+ DPRINTF("EEPROM Write Enable\n");
+ break;
+ case 3: /* WRITE */
+ if (s->eeprom_writable) {
+ s->eeprom[addr] &= s->e2p_data;
+ DPRINTF("EEPROM Write %d = 0x%02x\n", addr, s->e2p_data);
+ } else {
+ DPRINTF("EEPROM Write %d (ignored)\n", addr);
+ }
+ break;
+ case 4: /* WRAL */
+ if (s->eeprom_writable) {
+ for (addr = 0; addr < 128; addr++) {
+ s->eeprom[addr] &= s->e2p_data;
+ }
+ DPRINTF("EEPROM Write All 0x%02x\n", s->e2p_data);
+ } else {
+ DPRINTF("EEPROM Write All (ignored)\n");
+ }
+ case 5: /* ERASE */
+ if (s->eeprom_writable) {
+ s->eeprom[addr] = 0xff;
+ DPRINTF("EEPROM Erase %d\n", addr);
+ } else {
+ DPRINTF("EEPROM Erase %d (ignored)\n", addr);
+ }
+ break;
+ case 6: /* ERAL */
+ if (s->eeprom_writable) {
+ memset(s->eeprom, 0xff, 128);
+ DPRINTF("EEPROM Erase All\n");
+ } else {
+ DPRINTF("EEPROM Erase All (ignored)\n");
+ }
+ break;
+ case 7: /* RELOAD */
+ lan9118_reload_eeprom(s);
+ break;
+ }
+}
+
+static void lan9118_writel(void *opaque, target_phys_addr_t offset,
+ uint32_t val)
+{
+ lan9118_state *s = (lan9118_state *)opaque;
+ offset &= 0xff;
+
+ //DPRINTF("Write reg 0x%02x = 0x%08x\n", (int)offset, val);
+ if (offset >= 0x20 && offset < 0x40) {
+ /* TX FIFO */
+ tx_fifo_push(s, val);
+ return;
+ }
+ switch (offset) {
+ case CSR_IRQ_CFG:
+ /* TODO: Implement interrupt deassertion intervals. */
+ s->irq_cfg = (val & IRQ_EN);
+ break;
+ case CSR_INT_STS:
+ s->int_sts &= ~val;
+ break;
+ case CSR_INT_EN:
+ s->int_en = val & ~RESERVED_INT;
+ s->int_sts |= val & SW_INT;
+ break;
+ case CSR_FIFO_INT:
+ DPRINTF("FIFO INT levels %08x\n", val);
+ s->fifo_int = val;
+ break;
+ case CSR_RX_CFG:
+ if (val & 0x8000) {
+ /* RX_DUMP */
+ s->rx_fifo_used = 0;
+ s->rx_status_fifo_used = 0;
+ s->rx_packet_size_tail = s->rx_packet_size_head;
+ s->rx_packet_size[s->rx_packet_size_head] = 0;
+ }
+ s->rx_cfg = val & 0xcfff1ff0;
+ break;
+ case CSR_TX_CFG:
+ if (val & 0x8000) {
+ s->tx_status_fifo_used = 0;
+ }
+ if (val & 0x4000) {
+ s->txp->state = TX_IDLE;
+ s->txp->fifo_used = 0;
+ s->txp->cmd_a = 0xffffffff;
+ }
+ s->tx_cfg = val & 6;
+ break;
+ case CSR_HW_CFG:
+ if (val & 1) {
+ /* SRST */
+ lan9118_reset(&s->busdev.qdev);
+ } else {
+ s->hw_cfg = val & 0x003f300;
+ }
+ break;
+ case CSR_RX_DP_CTRL:
+ if (val & 0x80000000) {
+ /* Skip forward to next packet. */
+ s->rxp_pad = 0;
+ s->rxp_offset = 0;
+ if (s->rxp_size == 0) {
+ /* Pop a word to start the next packet. */
+ rx_fifo_pop(s);
+ s->rxp_pad = 0;
+ s->rxp_offset = 0;
+ }
+ s->rx_fifo_head += s->rxp_size;
+ if (s->rx_fifo_head >= s->rx_fifo_size) {
+ s->rx_fifo_head -= s->rx_fifo_size;
+ }
+ }
+ break;
+ case CSR_PMT_CTRL:
+ if (val & 0x400) {
+ phy_reset(s);
+ }
+ s->pmt_ctrl &= ~0x34e;
+ s->pmt_ctrl |= (val & 0x34e);
+ break;
+ case CSR_GPIO_CFG:
+ /* Probably just enabling LEDs. */
+ s->gpio_cfg = val & 0x7777071f;
+ break;
+ case CSR_WORD_SWAP:
+ /* Ignored because we're in 32-bit mode. */
+ s->word_swap = val;
+ break;
+ case CSR_MAC_CSR_CMD:
+ s->mac_cmd = val & 0x4000000f;
+ if (val & 0x80000000) {
+ if (val & 0x40000000) {
+ s->mac_data = do_mac_read(s, val & 0xf);
+ DPRINTF("MAC read %d = 0x%08x\n", val & 0xf, s->mac_data);
+ } else {
+ DPRINTF("MAC write %d = 0x%08x\n", val & 0xf, s->mac_data);
+ do_mac_write(s, val & 0xf, s->mac_data);
+ }
+ }
+ break;
+ case CSR_MAC_CSR_DATA:
+ s->mac_data = val;
+ break;
+ case CSR_AFC_CFG:
+ s->afc_cfg = val & 0x00ffffff;
+ break;
+ case CSR_E2P_CMD:
+ lan9118_eeprom_cmd(s, (val >> 28) & 7, val & 0xff);
+ break;
+ case CSR_E2P_DATA:
+ s->e2p_data = val & 0xff;
+ break;
+
+ default:
+ hw_error("lan9118_write: Bad reg 0x%x = %x\n", (int)offset, val);
+ break;
+ }
+ lan9118_update(s);
+}
+
+static uint32_t lan9118_readl(void *opaque, target_phys_addr_t offset)
+{
+ lan9118_state *s = (lan9118_state *)opaque;
+
+ //DPRINTF("Read reg 0x%02x\n", (int)offset);
+ if (offset < 0x20) {
+ /* RX FIFO */
+ return rx_fifo_pop(s);
+ }
+ switch (offset) {
+ case 0x40:
+ return rx_status_fifo_pop(s);
+ case 0x44:
+ return s->rx_status_fifo[s->tx_status_fifo_head];
+ case 0x48:
+ return tx_status_fifo_pop(s);
+ case 0x4c:
+ return s->tx_status_fifo[s->tx_status_fifo_head];
+ case CSR_ID_REV:
+ return 0x01180001;
+ case CSR_IRQ_CFG:
+ return s->irq_cfg;
+ case CSR_INT_STS:
+ return s->int_sts;
+ case CSR_INT_EN:
+ return s->int_en;
+ case CSR_BYTE_TEST:
+ return 0x87654321;
+ case CSR_FIFO_INT:
+ return s->fifo_int;
+ case CSR_RX_CFG:
+ return s->rx_cfg;
+ case CSR_TX_CFG:
+ return s->tx_cfg;
+ case CSR_HW_CFG:
+ return s->hw_cfg | 0x4;
+ case CSR_RX_DP_CTRL:
+ return 0;
+ case CSR_RX_FIFO_INF:
+ return (s->rx_status_fifo_used << 16) | (s->rx_fifo_used << 2);
+ case CSR_TX_FIFO_INF:
+ return (s->tx_status_fifo_used << 16)
+ | (s->tx_fifo_size - s->txp->fifo_used);
+ case CSR_PMT_CTRL:
+ return s->pmt_ctrl;
+ case CSR_GPIO_CFG:
+ return s->gpio_cfg;
+ case CSR_WORD_SWAP:
+ return s->word_swap;
+ case CSR_FREE_RUN:
+ return (qemu_get_clock(vm_clock) / 40) - s->free_timer_start;
+ case CSR_RX_DROP:
+ /* TODO: Implement dropped frames counter. */
+ return 0;
+ case CSR_MAC_CSR_CMD:
+ return s->mac_cmd;
+ case CSR_MAC_CSR_DATA:
+ return s->mac_data;
+ case CSR_AFC_CFG:
+ return s->afc_cfg;
+ case CSR_E2P_CMD:
+ return s->e2p_cmd;
+ case CSR_E2P_DATA:
+ return s->e2p_data;
+ }
+ hw_error("lan9118_read: Bad reg 0x%x\n", (int)offset);
+ return 0;
+}
+
+static CPUReadMemoryFunc * const lan9118_readfn[] = {
+ lan9118_readl,
+ lan9118_readl,
+ lan9118_readl
+};
+
+static CPUWriteMemoryFunc * const lan9118_writefn[] = {
+ lan9118_writel,
+ lan9118_writel,
+ lan9118_writel
+};
+
+static void lan9118_cleanup(VLANClientState *vc)
+{
+ lan9118_state *s = vc->opaque;
+
+ s->vc = NULL;
+}
+
+static int lan9118_init1(SysBusDevice *dev)
+{
+ lan9118_state *s = FROM_SYSBUS(lan9118_state, dev);
+ int i;
+
+ s->mmio_index = cpu_register_io_memory(lan9118_readfn,
+ lan9118_writefn, s);
+ sysbus_init_mmio(dev, 0x100, s->mmio_index);
+ sysbus_init_irq(dev, &s->irq);
+ qemu_macaddr_default_if_unset(&s->conf.macaddr);
+
+ s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_NIC,
+ s->conf.vlan, s->conf.peer,
+ dev->qdev.info->name, dev->qdev.id,
+ lan9118_can_receive, lan9118_receive, NULL,
+ NULL, lan9118_cleanup, s);
+ s->vc->link_status_changed = lan9118_set_link;
+ qemu_format_nic_info_str(s->vc, s->conf.macaddr.a);
+ s->eeprom[0] = 0xa5;
+ for (i = 0; i < 6; i++) {
+ s->eeprom[i + 1] = s->conf.macaddr.a[i];
+ }
+ s->pmt_ctrl = 1;
+ s->txp = &s->tx_packet;
+
+ /* ??? Save/restore. */
+ return 0;
+}
+
+static SysBusDeviceInfo lan9118_info = {
+ .init = lan9118_init1,
+ .qdev.name = "lan9118",
+ .qdev.size = sizeof(lan9118_state),
+ .qdev.reset = lan9118_reset,
+ .qdev.props = (Property[]) {
+ DEFINE_NIC_PROPERTIES(lan9118_state, conf),
+ DEFINE_PROP_END_OF_LIST(),
+ }
+};
+
+static void lan9118_register_devices(void)
+{
+ sysbus_register_withprop(&lan9118_info);
+}
+
+/* Legacy helper function. Should go away when machine config files are
+ implemented. */
+void lan9118_init(NICInfo *nd, uint32_t base, qemu_irq irq)
+{
+ DeviceState *dev;
+ SysBusDevice *s;
+
+ qemu_check_nic_model(nd, "lan9118");
+ dev = qdev_create(NULL, "lan9118");
+ qdev_set_nic_properties(dev, nd);
+ qdev_init_nofail(dev);
+ s = sysbus_from_qdev(dev);
+ sysbus_mmio_map(s, 0, base);
+ sysbus_connect_irq(s, 0, irq);
+}
+
+device_init(lan9118_register_devices)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-13 15:26:26 +0000