*/
#include <stdio.h>
-#include "hw.h"
+#include "sysbus.h"
#include "net.h"
-
-#include "etraxfs_dma.h"
+#include "etraxfs.h"
#define D(x)
-#define R_STAT 0x2c
-#define RW_MGM_CTRL 0x28
-#define FS_ETH_MAX_REGS 0x5c
-
-
+/* Advertisement control register. */
+#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
+#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
+#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
+#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */
+/*
+ * The MDIO extensions in the TDK PHY model were reversed engineered from the
+ * linux driver (PHYID and Diagnostics reg).
+ * TODO: Add friendly names for the register nums.
+ */
struct qemu_phy
{
uint32_t regs[32];
+ int link;
+
unsigned int (*read)(struct qemu_phy *phy, unsigned int req);
- void (*write)(struct qemu_phy *phy, unsigned int req, unsigned int data);
+ void (*write)(struct qemu_phy *phy, unsigned int req,
+ unsigned int data);
};
static unsigned int tdk_read(struct qemu_phy *phy, unsigned int req)
switch (regnum) {
case 1:
- /* MR1. */
+ if (!phy->link)
+ break;
+ /* MR1. */
/* Speeds and modes. */
r |= (1 << 13) | (1 << 14);
r |= (1 << 11) | (1 << 12);
r |= (1 << 5); /* Autoneg complete. */
- r |= (1 << 3); /* Autoneg able. */
- r |= (1 << 2); /* Link. */
+ r |= (1 << 3); /* Autoneg able. */
+ r |= (1 << 2); /* link. */
break;
+ case 5:
+ /* Link partner ability.
+ We are kind; always agree with whatever best mode
+ the guest advertises. */
+ r = 1 << 14; /* Success. */
+ /* Copy advertised modes. */
+ r |= phy->regs[4] & (15 << 5);
+ /* Autoneg support. */
+ r |= 1;
+ break;
+ case 18:
+ {
+ /* Diagnostics reg. */
+ int duplex = 0;
+ int speed_100 = 0;
+
+ if (!phy->link)
+ break;
+
+ /* Are we advertising 100 half or 100 duplex ? */
+ speed_100 = !!(phy->regs[4] & ADVERTISE_100HALF);
+ speed_100 |= !!(phy->regs[4] & ADVERTISE_100FULL);
+
+ /* Are we advertising 10 duplex or 100 duplex ? */
+ duplex = !!(phy->regs[4] & ADVERTISE_100FULL);
+ duplex |= !!(phy->regs[4] & ADVERTISE_10FULL);
+ r = (speed_100 << 10) | (duplex << 11);
+ }
+ break;
+
default:
r = phy->regs[regnum];
break;
}
- D(printf("%s %x = reg[%d]\n", __func__, r, regnum));
+ D(printf("\n%s %x = reg[%d]\n", __func__, r, regnum));
return r;
}
static void
tdk_init(struct qemu_phy *phy)
{
+ phy->regs[0] = 0x3100;
+ /* PHY Id. */
+ phy->regs[2] = 0x0300;
+ phy->regs[3] = 0xe400;
+ /* Autonegotiation advertisement reg. */
+ phy->regs[4] = 0x01E1;
+ phy->link = 1;
+
phy->read = tdk_read;
phy->write = tdk_write;
}
struct qemu_mdio
{
- /* bus. */
+ /* bus. */
int mdc;
int mdio;
bus->devs[addr & 0x1f] = phy;
}
+#ifdef USE_THIS_DEAD_CODE
static void
mdio_detach(struct qemu_mdio *bus, struct qemu_phy *phy, unsigned int addr)
{
bus->devs[addr & 0x1f] = NULL;
}
+#endif
static void mdio_read_req(struct qemu_mdio *bus)
{
case DATA:
if (!bus->mdc) {
if (bus->drive) {
- bus->mdio = bus->data & 1;
- bus->data >>= 1;
+ bus->mdio = !!(bus->data & (1 << 15));
+ bus->data <<= 1;
}
} else {
if (!bus->drive) {
if (bus->cnt == 16 * 2) {
bus->cnt = 0;
bus->state = PREAMBLE;
- mdio_write_req(bus);
+ if (!bus->drive)
+ mdio_write_req(bus);
+ bus->drive = 0;
}
}
break;
}
}
+/* ETRAX-FS Ethernet MAC block starts here. */
+
+#define RW_MA0_LO 0x00
+#define RW_MA0_HI 0x01
+#define RW_MA1_LO 0x02
+#define RW_MA1_HI 0x03
+#define RW_GA_LO 0x04
+#define RW_GA_HI 0x05
+#define RW_GEN_CTRL 0x06
+#define RW_REC_CTRL 0x07
+#define RW_TR_CTRL 0x08
+#define RW_CLR_ERR 0x09
+#define RW_MGM_CTRL 0x0a
+#define R_STAT 0x0b
+#define FS_ETH_MAX_REGS 0x17
struct fs_eth
{
- CPUState *env;
- qemu_irq *irq;
- target_phys_addr_t base;
- VLANClientState *vc;
- uint8_t macaddr[6];
+ SysBusDevice busdev;
+ NICState *nic;
+ NICConf conf;
int ethregs;
+ /* Two addrs in the filter. */
+ uint8_t macaddr[2][6];
uint32_t regs[FS_ETH_MAX_REGS];
- unsigned char rx_fifo[1536];
- int rx_fifo_len;
- int rx_fifo_pos;
-
- struct etraxfs_dma_client *dma_out;
- struct etraxfs_dma_client *dma_in;
+ union {
+ void *vdma_out;
+ struct etraxfs_dma_client *dma_out;
+ };
+ union {
+ void *vdma_in;
+ struct etraxfs_dma_client *dma_in;
+ };
/* MDIO bus. */
struct qemu_mdio mdio_bus;
- /* PHY. */
+ unsigned int phyaddr;
+ int duplex_mismatch;
+
+ /* PHY. */
struct qemu_phy phy;
};
-static uint32_t eth_rinvalid (void *opaque, target_phys_addr_t addr)
+static void eth_validate_duplex(struct fs_eth *eth)
{
- struct fs_eth *eth = opaque;
- CPUState *env = eth->env;
- cpu_abort(env, "Unsupported short access. reg=%x pc=%x.\n",
- addr, env->pc);
- return 0;
+ struct qemu_phy *phy;
+ unsigned int phy_duplex;
+ unsigned int mac_duplex;
+ int new_mm = 0;
+
+ phy = eth->mdio_bus.devs[eth->phyaddr];
+ phy_duplex = !!(phy->read(phy, 18) & (1 << 11));
+ mac_duplex = !!(eth->regs[RW_REC_CTRL] & 128);
+
+ if (mac_duplex != phy_duplex)
+ new_mm = 1;
+
+ if (eth->regs[RW_GEN_CTRL] & 1) {
+ if (new_mm != eth->duplex_mismatch) {
+ if (new_mm)
+ printf("HW: WARNING "
+ "ETH duplex mismatch MAC=%d PHY=%d\n",
+ mac_duplex, phy_duplex);
+ else
+ printf("HW: ETH duplex ok.\n");
+ }
+ eth->duplex_mismatch = new_mm;
+ }
}
static uint32_t eth_readl (void *opaque, target_phys_addr_t addr)
{
- struct fs_eth *eth = opaque;
- D(CPUState *env = eth->env);
- uint32_t r = 0;
+ struct fs_eth *eth = opaque;
+ uint32_t r = 0;
- /* Make addr relative to this instances base. */
- addr -= eth->base;
- switch (addr) {
+ addr >>= 2;
+
+ switch (addr) {
case R_STAT:
- /* Attach an MDIO/PHY abstraction. */
r = eth->mdio_bus.mdio & 1;
break;
- default:
+ default:
r = eth->regs[addr];
- D(printf ("%s %x p=%x\n", __func__, addr, env->pc));
- break;
- }
- return r;
+ D(printf ("%s %x\n", __func__, addr * 4));
+ break;
+ }
+ return r;
}
-static void
-eth_winvalid (void *opaque, target_phys_addr_t addr, uint32_t value)
+static void eth_update_ma(struct fs_eth *eth, int ma)
{
- struct fs_eth *eth = opaque;
- CPUState *env = eth->env;
- cpu_abort(env, "Unsupported short access. reg=%x pc=%x.\n",
- addr, env->pc);
+ int reg;
+ int i = 0;
+
+ ma &= 1;
+
+ reg = RW_MA0_LO;
+ if (ma)
+ reg = RW_MA1_LO;
+
+ eth->macaddr[ma][i++] = eth->regs[reg];
+ eth->macaddr[ma][i++] = eth->regs[reg] >> 8;
+ eth->macaddr[ma][i++] = eth->regs[reg] >> 16;
+ eth->macaddr[ma][i++] = eth->regs[reg] >> 24;
+ eth->macaddr[ma][i++] = eth->regs[reg + 1];
+ eth->macaddr[ma][i] = eth->regs[reg + 1] >> 8;
+
+ D(printf("set mac%d=%x.%x.%x.%x.%x.%x\n", ma,
+ eth->macaddr[ma][0], eth->macaddr[ma][1],
+ eth->macaddr[ma][2], eth->macaddr[ma][3],
+ eth->macaddr[ma][4], eth->macaddr[ma][5]));
}
static void
eth_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
{
- struct fs_eth *eth = opaque;
- CPUState *env = eth->env;
+ struct fs_eth *eth = opaque;
+
+ addr >>= 2;
+ switch (addr)
+ {
+ case RW_MA0_LO:
+ case RW_MA0_HI:
+ eth->regs[addr] = value;
+ eth_update_ma(eth, 0);
+ break;
+ case RW_MA1_LO:
+ case RW_MA1_HI:
+ eth->regs[addr] = value;
+ eth_update_ma(eth, 1);
+ break;
- /* Make addr relative to this instances base. */
- addr -= eth->base;
- switch (addr)
- {
case RW_MGM_CTRL:
/* Attach an MDIO/PHY abstraction. */
if (value & 2)
eth->mdio_bus.mdio = value & 1;
- if (eth->mdio_bus.mdc != (value & 4))
+ if (eth->mdio_bus.mdc != (value & 4)) {
mdio_cycle(ð->mdio_bus);
+ eth_validate_duplex(eth);
+ }
eth->mdio_bus.mdc = !!(value & 4);
+ eth->regs[addr] = value;
break;
- default:
- printf ("%s %x %x pc=%x\n",
- __func__, addr, value, env->pc);
- break;
- }
+ case RW_REC_CTRL:
+ eth->regs[addr] = value;
+ eth_validate_duplex(eth);
+ break;
+
+ default:
+ eth->regs[addr] = value;
+ D(printf ("%s %x %x\n",
+ __func__, addr, value));
+ break;
+ }
}
-static int eth_can_receive(void *opaque)
+/* The ETRAX FS has a groupt address table (GAT) which works like a k=1 bloom
+ filter dropping group addresses we have not joined. The filter has 64
+ bits (m). The has function is a simple nible xor of the group addr. */
+static int eth_match_groupaddr(struct fs_eth *eth, const unsigned char *sa)
{
- struct fs_eth *eth = opaque;
- int r;
-
- r = eth->rx_fifo_len == 0;
- if (!r) {
- /* TODO: signal fifo overrun. */
- printf("PACKET LOSS!\n");
- }
- return r;
+ unsigned int hsh;
+ int m_individual = eth->regs[RW_REC_CTRL] & 4;
+ int match;
+
+ /* First bit on the wire of a MAC address signals multicast or
+ physical address. */
+ if (!m_individual && !(sa[0] & 1))
+ return 0;
+
+ /* Calculate the hash index for the GA registers. */
+ hsh = 0;
+ hsh ^= (*sa) & 0x3f;
+ hsh ^= ((*sa) >> 6) & 0x03;
+ ++sa;
+ hsh ^= ((*sa) << 2) & 0x03c;
+ hsh ^= ((*sa) >> 4) & 0xf;
+ ++sa;
+ hsh ^= ((*sa) << 4) & 0x30;
+ hsh ^= ((*sa) >> 2) & 0x3f;
+ ++sa;
+ hsh ^= (*sa) & 0x3f;
+ hsh ^= ((*sa) >> 6) & 0x03;
+ ++sa;
+ hsh ^= ((*sa) << 2) & 0x03c;
+ hsh ^= ((*sa) >> 4) & 0xf;
+ ++sa;
+ hsh ^= ((*sa) << 4) & 0x30;
+ hsh ^= ((*sa) >> 2) & 0x3f;
+
+ hsh &= 63;
+ if (hsh > 31)
+ match = eth->regs[RW_GA_HI] & (1 << (hsh - 32));
+ else
+ match = eth->regs[RW_GA_LO] & (1 << hsh);
+ D(printf("hsh=%x ga=%x.%x mtch=%d\n", hsh,
+ eth->regs[RW_GA_HI], eth->regs[RW_GA_LO], match));
+ return match;
}
-static void eth_receive(void *opaque, const uint8_t *buf, int size)
+static int eth_can_receive(VLANClientState *nc)
{
- struct fs_eth *eth = opaque;
- if (size > sizeof(eth->rx_fifo)) {
- /* TODO: signal error. */
- } else {
- memcpy(eth->rx_fifo, buf, size);
- /* +4, HW passes the CRC to sw. */
- eth->rx_fifo_len = size + 4;
- eth->rx_fifo_pos = 0;
- }
+ return 1;
}
-static void eth_rx_pull(void *opaque)
+static ssize_t eth_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
{
- struct fs_eth *eth = opaque;
- int len;
- if (eth->rx_fifo_len) {
- D(printf("%s %d\n", __func__, eth->rx_fifo_len));
-#if 0
- {
- int i;
- for (i = 0; i < 32; i++)
- printf("%2.2x", eth->rx_fifo[i]);
- printf("\n");
- }
-#endif
- len = etraxfs_dmac_input(eth->dma_in,
- eth->rx_fifo + eth->rx_fifo_pos,
- eth->rx_fifo_len, 1);
- eth->rx_fifo_len -= len;
- eth->rx_fifo_pos += len;
- }
+ unsigned char sa_bcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+ struct fs_eth *eth = DO_UPCAST(NICState, nc, nc)->opaque;
+ int use_ma0 = eth->regs[RW_REC_CTRL] & 1;
+ int use_ma1 = eth->regs[RW_REC_CTRL] & 2;
+ int r_bcast = eth->regs[RW_REC_CTRL] & 8;
+
+ if (size < 12)
+ return -1;
+
+ D(printf("%x.%x.%x.%x.%x.%x ma=%d %d bc=%d\n",
+ buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
+ use_ma0, use_ma1, r_bcast));
+
+ /* Does the frame get through the address filters? */
+ if ((!use_ma0 || memcmp(buf, eth->macaddr[0], 6))
+ && (!use_ma1 || memcmp(buf, eth->macaddr[1], 6))
+ && (!r_bcast || memcmp(buf, sa_bcast, 6))
+ && !eth_match_groupaddr(eth, buf))
+ return size;
+
+ /* FIXME: Find another way to pass on the fake csum. */
+ etraxfs_dmac_input(eth->dma_in, (void *)buf, size + 4, 1);
+
+ return size;
}
static int eth_tx_push(void *opaque, unsigned char *buf, int len)
struct fs_eth *eth = opaque;
D(printf("%s buf=%p len=%d\n", __func__, buf, len));
- qemu_send_packet(eth->vc, buf, len);
+ qemu_send_packet(ð->nic->nc, buf, len);
return len;
}
-static CPUReadMemoryFunc *eth_read[] = {
- ð_rinvalid,
- ð_rinvalid,
- ð_readl,
+static void eth_set_link(VLANClientState *nc)
+{
+ struct fs_eth *eth = DO_UPCAST(NICState, nc, nc)->opaque;
+ D(printf("%s %d\n", __func__, nc->link_down));
+ eth->phy.link = !nc->link_down;
+}
+
+static CPUReadMemoryFunc * const eth_read[] = {
+ NULL, NULL,
+ ð_readl,
+};
+
+static CPUWriteMemoryFunc * const eth_write[] = {
+ NULL, NULL,
+ ð_writel,
+};
+
+static void eth_cleanup(VLANClientState *nc)
+{
+ struct fs_eth *eth = DO_UPCAST(NICState, nc, nc)->opaque;
+
+ cpu_unregister_io_memory(eth->ethregs);
+
+ /* Disconnect the client. */
+ eth->dma_out->client.push = NULL;
+ eth->dma_out->client.opaque = NULL;
+ eth->dma_in->client.opaque = NULL;
+ eth->dma_in->client.pull = NULL;
+ g_free(eth);
+}
+
+static NetClientInfo net_etraxfs_info = {
+ .type = NET_CLIENT_TYPE_NIC,
+ .size = sizeof(NICState),
+ .can_receive = eth_can_receive,
+ .receive = eth_receive,
+ .cleanup = eth_cleanup,
+ .link_status_changed = eth_set_link,
};
-static CPUWriteMemoryFunc *eth_write[] = {
- ð_winvalid,
- ð_winvalid,
- ð_writel,
+static int fs_eth_init(SysBusDevice *dev)
+{
+ struct fs_eth *s = FROM_SYSBUS(typeof(*s), dev);
+ int eth_regs;
+
+ if (!s->dma_out || !s->dma_in) {
+ hw_error("Unconnected ETRAX-FS Ethernet MAC.\n");
+ }
+
+ s->dma_out->client.push = eth_tx_push;
+ s->dma_out->client.opaque = s;
+ s->dma_in->client.opaque = s;
+ s->dma_in->client.pull = NULL;
+
+ eth_regs = cpu_register_io_memory(eth_read, eth_write, s,
+ DEVICE_LITTLE_ENDIAN);
+ sysbus_init_mmio(dev, 0x5c, eth_regs);
+
+ qemu_macaddr_default_if_unset(&s->conf.macaddr);
+ s->nic = qemu_new_nic(&net_etraxfs_info, &s->conf,
+ dev->qdev.info->name, dev->qdev.id, s);
+ qemu_format_nic_info_str(&s->nic->nc, s->conf.macaddr.a);
+
+ tdk_init(&s->phy);
+ mdio_attach(&s->mdio_bus, &s->phy, s->phyaddr);
+ return 0;
+}
+
+static SysBusDeviceInfo etraxfs_eth_info = {
+ .init = fs_eth_init,
+ .qdev.name = "etraxfs-eth",
+ .qdev.size = sizeof(struct fs_eth),
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT32("phyaddr", struct fs_eth, phyaddr, 1),
+ DEFINE_PROP_PTR("dma_out", struct fs_eth, vdma_out),
+ DEFINE_PROP_PTR("dma_in", struct fs_eth, vdma_in),
+ DEFINE_NIC_PROPERTIES(struct fs_eth, conf),
+ DEFINE_PROP_END_OF_LIST(),
+ }
};
-void *etraxfs_eth_init(NICInfo *nd, CPUState *env,
- qemu_irq *irq, target_phys_addr_t base)
+static void etraxfs_eth_register(void)
{
- struct etraxfs_dma_client *dma = NULL;
- struct fs_eth *eth = NULL;
-
- dma = qemu_mallocz(sizeof *dma * 2);
- if (!dma)
- return NULL;
-
- eth = qemu_mallocz(sizeof *eth);
- if (!eth)
- goto err;
-
- dma[0].client.push = eth_tx_push;
- dma[0].client.opaque = eth;
- dma[1].client.opaque = eth;
- dma[1].client.pull = eth_rx_pull;
-
- eth->env = env;
- eth->base = base;
- eth->irq = irq;
- eth->dma_out = dma;
- eth->dma_in = dma + 1;
- memcpy(eth->macaddr, nd->macaddr, 6);
-
- /* Connect the phy. */
- tdk_init(ð->phy);
- mdio_attach(ð->mdio_bus, ð->phy, 0x1);
-
- eth->ethregs = cpu_register_io_memory(0, eth_read, eth_write, eth);
- cpu_register_physical_memory (base, 0x5c, eth->ethregs);
-
- eth->vc = qemu_new_vlan_client(nd->vlan,
- eth_receive, eth_can_receive, eth);
-
- return dma;
- err:
- qemu_free(eth);
- qemu_free(dma);
- return NULL;
+ sysbus_register_withprop(&etraxfs_eth_info);
}
+
+device_init(etraxfs_eth_register)
projects / qemu.git / blobdiff