/*
* ADM5120 built-in ethernet switch driver
*
- * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
+ * Copyright (C) 2007,2008 Gabor Juhos <juhosg at openwrt.org>
*
* This code was based on a driver for Linux 2.6.xx by Jeroen Vreeken.
* Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2005
#define DRV_NAME "adm5120-switch"
#define DRV_DESC "ADM5120 built-in ethernet switch driver"
-#define DRV_VERSION "0.1.0"
+#define DRV_VERSION "0.1.1"
#define CONFIG_ADM5120_SWITCH_NAPI 1
#undef CONFIG_ADM5120_SWITCH_DEBUG
/* ------------------------------------------------------------------------ */
struct adm5120_if_priv {
+ struct net_device *dev;
+
unsigned int vlan_no;
unsigned int port_mask;
+
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+ struct napi_struct napi;
+#endif
};
struct dma_desc {
{
u32 t;
- t = SW_READ_REG(PHY_STATUS);
+ t = sw_read_reg(SWITCH_REG_PHY_STATUS);
SW_DBG("phy_status: %08X\n", t);
- t = SW_READ_REG(CPUP_CONF);
+ t = sw_read_reg(SWITCH_REG_CPUP_CONF);
SW_DBG("cpup_conf: %08X%s%s%s\n", t,
(t & CPUP_CONF_DCPUP) ? " DCPUP" : "",
(t & CPUP_CONF_CRCP) ? " CRCP" : "",
(t & CPUP_CONF_BTM) ? " BTM" : "");
- t = SW_READ_REG(PORT_CONF0);
+ t = sw_read_reg(SWITCH_REG_PORT_CONF0);
SW_DBG("port_conf0: %08X\n", t);
- t = SW_READ_REG(PORT_CONF1);
+ t = sw_read_reg(SWITCH_REG_PORT_CONF1);
SW_DBG("port_conf1: %08X\n", t);
- t = SW_READ_REG(PORT_CONF2);
+ t = sw_read_reg(SWITCH_REG_PORT_CONF2);
SW_DBG("port_conf2: %08X\n", t);
- t = SW_READ_REG(VLAN_G1);
+ t = sw_read_reg(SWITCH_REG_VLAN_G1);
SW_DBG("vlan g1: %08X\n", t);
- t = SW_READ_REG(VLAN_G2);
+ t = sw_read_reg(SWITCH_REG_VLAN_G2);
SW_DBG("vlan g2: %08X\n", t);
- t = SW_READ_REG(BW_CNTL0);
+ t = sw_read_reg(SWITCH_REG_BW_CNTL0);
SW_DBG("bw_cntl0: %08X\n", t);
- t = SW_READ_REG(BW_CNTL1);
+ t = sw_read_reg(SWITCH_REG_BW_CNTL1);
SW_DBG("bw_cntl1: %08X\n", t);
- t = SW_READ_REG(PHY_CNTL0);
+ t = sw_read_reg(SWITCH_REG_PHY_CNTL0);
SW_DBG("phy_cntl0: %08X\n", t);
- t = SW_READ_REG(PHY_CNTL1);
+ t = sw_read_reg(SWITCH_REG_PHY_CNTL1);
SW_DBG("phy_cntl1: %08X\n", t);
- t = SW_READ_REG(PHY_CNTL2);
+ t = sw_read_reg(SWITCH_REG_PHY_CNTL2);
SW_DBG("phy_cntl2: %08X\n", t);
- t = SW_READ_REG(PHY_CNTL3);
+ t = sw_read_reg(SWITCH_REG_PHY_CNTL3);
SW_DBG("phy_cntl3: %08X\n", t);
- t = SW_READ_REG(PHY_CNTL4);
+ t = sw_read_reg(SWITCH_REG_PHY_CNTL4);
SW_DBG("phy_cntl4: %08X\n", t);
- t = SW_READ_REG(INT_STATUS);
+ t = sw_read_reg(SWITCH_REG_INT_STATUS);
sw_dump_intr_mask("int_status: ", t);
- t = SW_READ_REG(INT_MASK);
+ t = sw_read_reg(SWITCH_REG_INT_MASK);
sw_dump_intr_mask("int_mask: ", t);
- t = SW_READ_REG(SHDA);
+ t = sw_read_reg(SWITCH_REG_SHDA);
SW_DBG("shda: %08X\n", t);
- t = SW_READ_REG(SLDA);
+ t = sw_read_reg(SWITCH_REG_SLDA);
SW_DBG("slda: %08X\n", t);
- t = SW_READ_REG(RHDA);
+ t = sw_read_reg(SWITCH_REG_RHDA);
SW_DBG("rhda: %08X\n", t);
- t = SW_READ_REG(RLDA);
+ t = sw_read_reg(SWITCH_REG_RLDA);
SW_DBG("rlda: %08X\n", t);
}
-
/* ------------------------------------------------------------------------ */
static inline void adm5120_rx_dma_update(struct dma_desc *desc,
dma_cache_wback_inv((unsigned long)skb->data,
skb->len);
-#ifdef CONFIG_ADM5120_SWITCH_USE_NAPI
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
netif_receive_skb(skb);
#else
netif_rx(skb);
}
#ifdef CONFIG_ADM5120_SWITCH_NAPI
-static int adm5120_if_poll(struct net_device *dev, int *budget)
+static int adm5120_if_poll(struct napi_struct *napi, int limit)
{
- int limit = min(dev->quota, *budget);
+ struct adm5120_if_priv *priv = container_of(napi,
+ struct adm5120_if_priv, napi);
+ struct net_device *dev = priv->dev;
int done;
u32 status;
SW_DBG("%s: processing RX ring\n", dev->name);
done = adm5120_switch_rx(limit);
- *budget -= done;
- dev->quota -= done;
-
status = sw_int_status() & SWITCH_INTS_POLL;
if ((done < limit) && (!status)) {
SW_DBG("disable polling mode for %s\n", dev->name);
- netif_rx_complete(dev);
+ netif_rx_complete(dev, napi);
sw_int_unmask(SWITCH_INTS_POLL);
return 0;
}
dev->name, done, status);
return 1;
}
-#endif /* CONFIG_ADM5120_SWITCH_USE_NAPI */
+#endif /* CONFIG_ADM5120_SWITCH_NAPI */
static irqreturn_t adm5120_switch_irq(int irq, void *dev_id)
if (status & SWITCH_INTS_POLL) {
struct net_device *dev = dev_id;
+ struct adm5120_if_priv *priv = netdev_priv(dev);
+
sw_dump_intr_mask("poll ints", status);
SW_DBG("enable polling mode for %s\n", dev->name);
sw_int_mask(SWITCH_INTS_POLL);
- netif_rx_schedule(dev);
+ netif_rx_schedule(dev, &priv->napi);
}
#else
sw_int_ack(status);
/* ------------------------------------------------------------------------ */
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+static inline void adm5120_if_napi_enable(struct net_device *dev)
+{
+ struct adm5120_if_priv *priv = netdev_priv(dev);
+ napi_enable(&priv->napi);
+}
+
+static inline void adm5120_if_napi_disable(struct net_device *dev)
+{
+ struct adm5120_if_priv *priv = netdev_priv(dev);
+ napi_disable(&priv->napi);
+}
+#else
+static inline void adm5120_if_napi_enable(struct net_device *dev) {}
+static inline void adm5120_if_napi_disable(struct net_device *dev) {}
+#endif /* CONFIG_ADM5120_SWITCH_NAPI */
+
static int adm5120_if_open(struct net_device *dev)
{
u32 t;
int err;
int i;
+ adm5120_if_napi_enable(dev);
+
err = request_irq(dev->irq, adm5120_switch_irq,
(IRQF_SHARED | IRQF_DISABLED), dev->name, dev);
if (err) {
return 0;
err:
+ adm5120_if_napi_disable(dev);
return err;
}
int i;
netif_stop_queue(dev);
+ adm5120_if_napi_disable(dev);
/* disable port if not assigned to other devices */
t = sw_read_reg(SWITCH_REG_PORT_CONF0);
struct adm5120_if_priv *priv = netdev_priv(dev);
unsigned int entry;
unsigned long data;
+ int i;
/* lock switch irq */
spin_lock_irq(&tx_lock);
cur_txl++;
if (cur_txl == dirty_txl + TX_QUEUE_LEN) {
- /* FIXME: stop queue for all devices */
- netif_stop_queue(dev);
+ for (i = 0; i < SWITCH_NUM_PORTS; i++) {
+ if (!adm5120_devs[i])
+ continue;
+ netif_stop_queue(adm5120_devs[i]);
+ }
}
dev->trans_start = jiffies;
if (!dev)
return NULL;
+ priv = netdev_priv(dev);
+ priv->dev = dev;
+
dev->irq = ADM5120_IRQ_SWITCH;
dev->open = adm5120_if_open;
dev->hard_start_xmit = adm5120_if_hard_start_xmit;
dev->tx_timeout = adm5120_if_tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
dev->set_mac_address = adm5120_if_set_mac_address;
+
#ifdef CONFIG_ADM5120_SWITCH_NAPI
- dev->poll = adm5120_if_poll;
- dev->weight = 64;
+ netif_napi_add(dev, &priv->napi, adm5120_if_poll, 64);
#endif
- SET_MODULE_OWNER(dev);
-
return dev;
}
(SWITCH_PORTS_PHY << PHY_CNTL2_PHYR_SHIFT) |
(SWITCH_PORTS_PHY << PHY_CNTL2_AMDIX_SHIFT) |
PHY_CNTL2_RMAE;
- SW_WRITE_REG(PHY_CNTL2, t);
+ sw_write_reg(SWITCH_REG_PHY_CNTL2, t);
t = sw_read_reg(SWITCH_REG_PHY_CNTL3);
t |= PHY_CNTL3_RNT;
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