static int eth_close(struct net_device *dev)
{
struct port *port = netdev_priv(dev);
struct msg msg;
int buffs = RX_DESCS; /* allocated RX buffers */
int i;
ports_open--;
qmgr_disable_irq(port->plat->rxq);
napi_disable(&port->napi);
netif_stop_queue(dev);
while (queue_get_desc(RXFREE_QUEUE(port->id), port, 0) >= 0)
buffs--;
memset(&msg, 0, sizeof(msg));
msg.cmd = NPE_SETLOOPBACK_MODE;
msg.eth_id = port->id;
msg.byte3 = 1;
if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK"))
printk(KERN_CRIT "%s: unable to enable loopback\n", dev->name);
i = 0;
do { /* drain RX buffers */
while (queue_get_desc(port->plat->rxq, port, 0) >= 0)
buffs--;
if (!buffs)
break;
if (qmgr_stat_empty(TX_QUEUE(port->id))) {
/* we have to inject some packet */
struct desc *desc;
u32 phys;
int n = queue_get_desc(port->plat->txreadyq, port, 1);
BUG_ON(n < 0);
desc = tx_desc_ptr(port, n);
phys = tx_desc_phys(port, n);
desc->buf_len = desc->pkt_len = 1;
wmb();
queue_put_desc(TX_QUEUE(port->id), phys, desc);
}
udelay(1);
} while (++i < MAX_CLOSE_WAIT);
if (buffs)
printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)"
" left in NPE\n", dev->name, buffs);
#if DEBUG_CLOSE
if (!buffs)
printk(KERN_DEBUG "Draining RX queue took %i cycles\n", i);
#endif
buffs = TX_DESCS;
while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0)
buffs--; /* cancel TX */
i = 0;
do {
while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0)
buffs--;
if (!buffs)
break;
} while (++i < MAX_CLOSE_WAIT);
if (buffs)
printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) "
"left in NPE\n", dev->name, buffs);
#if DEBUG_CLOSE
if (!buffs)
printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i);
#endif
msg.byte3 = 0;
if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK"))
printk(KERN_CRIT "%s: unable to disable loopback\n",
dev->name);
phy_stop(port->phydev);
if (!ports_open)
qmgr_disable_irq(TXDONE_QUEUE);
destroy_queues(port);
release_queues(port);
return 0;
}
static int eth_open(struct net_device *dev)
{
struct port *port = netdev_priv(dev);
struct npe *npe = port->npe;
struct msg msg;
int i, err;
if (!npe_running(npe)) {
err = npe_load_firmware(npe, npe_name(npe), &dev->dev);
if (err)
return err;
if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) {
printk(KERN_ERR "%s: %s not responding\n", dev->name,
npe_name(npe));
return -EIO;
}
port->firmware[0] = msg.byte4;
port->firmware[1] = msg.byte5;
port->firmware[2] = msg.byte6;
port->firmware[3] = msg.byte7;
}
memset(&msg, 0, sizeof(msg));
msg.cmd = NPE_VLAN_SETRXQOSENTRY;
msg.eth_id = port->id;
msg.byte5 = port->plat->rxq | 0x80;
msg.byte7 = port->plat->rxq << 4;
for (i = 0; i < 8; i++) {
msg.byte3 = i;
if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ"))
return -EIO;
}
msg.cmd = NPE_EDB_SETPORTADDRESS;
msg.eth_id = PHYSICAL_ID(port->id);
msg.byte2 = dev->dev_addr[0];
msg.byte3 = dev->dev_addr[1];
msg.byte4 = dev->dev_addr[2];
msg.byte5 = dev->dev_addr[3];
msg.byte6 = dev->dev_addr[4];
msg.byte7 = dev->dev_addr[5];
if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC"))
return -EIO;
memset(&msg, 0, sizeof(msg));
msg.cmd = NPE_FW_SETFIREWALLMODE;
msg.eth_id = port->id;
if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE"))
return -EIO;
if ((err = request_queues(port)) != 0)
return err;
if ((err = init_queues(port)) != 0) {
destroy_queues(port);
release_queues(port);
return err;
}
port->speed = 0; /* force "link up" message */
phy_start(port->phydev);
for (i = 0; i < ETH_ALEN; i++)
__raw_writel(dev->dev_addr[i], &port->regs->hw_addr[i]);
__raw_writel(0x08, &port->regs->random_seed);
__raw_writel(0x12, &port->regs->partial_empty_threshold);
__raw_writel(0x30, &port->regs->partial_full_threshold);
__raw_writel(0x08, &port->regs->tx_start_bytes);
__raw_writel(0x15, &port->regs->tx_deferral);
__raw_writel(0x08, &port->regs->tx_2part_deferral[0]);
__raw_writel(0x07, &port->regs->tx_2part_deferral[1]);
__raw_writel(0x80, &port->regs->slot_time);
__raw_writel(0x01, &port->regs->int_clock_threshold);
/* Populate queues with buffers, no failure after this point */
for (i = 0; i < TX_DESCS; i++)
queue_put_desc(port->plat->txreadyq,
tx_desc_phys(port, i), tx_desc_ptr(port, i));
for (i = 0; i < RX_DESCS; i++)
queue_put_desc(RXFREE_QUEUE(port->id),
rx_desc_phys(port, i), rx_desc_ptr(port, i));
__raw_writel(TX_CNTRL1_RETRIES, &port->regs->tx_control[1]);
__raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]);
__raw_writel(0, &port->regs->rx_control[1]);
__raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]);
napi_enable(&port->napi);
eth_set_mcast_list(dev);
netif_start_queue(dev);
qmgr_set_irq(port->plat->rxq, QUEUE_IRQ_SRC_NOT_EMPTY,
eth_rx_irq, dev);
if (!ports_open) {
qmgr_set_irq(TXDONE_QUEUE, QUEUE_IRQ_SRC_NOT_EMPTY,
eth_txdone_irq, NULL);
qmgr_enable_irq(TXDONE_QUEUE);
}
ports_open++;
/* we may already have RX data, enables IRQ */
napi_schedule(&port->napi);
return 0;
}
static void queue_out_deinit(struct module *m)
{
struct queue_out_priv *priv = get_priv(m);
release_queues(priv->port, m, PACKET_DIR_OUT, &priv->qid, 1);
}
