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add a 2.6.24 specific patch for the switch driver, thanks to Francesco Gringoli for his 2.6.24-rc2 patch

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SVN-Revision: 10337
This commit is contained in:
Gabor Juhos 2008-01-31 10:18:58 +00:00
parent 7b3d603037
commit fdee1a5a5a
1 changed files with 144 additions and 0 deletions
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144
target/linux/adm5120/patches-2.6.24/900-adm5120_switch_napi.patch Normal file
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@ -0,0 +1,144 @@
Index: linux-2.6.24/drivers/net/adm5120sw.c
===================================================================
--- linux-2.6.24.orig/drivers/net/adm5120sw.c
+++ linux-2.6.24/drivers/net/adm5120sw.c
@@ -93,8 +93,14 @@
/* ------------------------------------------------------------------------ */
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 {
@@ -333,7 +339,6 @@ static void sw_dump_regs(void)
SW_DBG("rlda: %08X\n", t);
}
-
/* ------------------------------------------------------------------------ */
static inline void adm5120_rx_dma_update(struct dma_desc *desc,
@@ -495,9 +500,11 @@ static void adm5120_switch_tx(void)
}
#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;
@@ -509,13 +516,10 @@ static int adm5120_if_poll(struct net_de
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;
}
@@ -541,10 +545,12 @@ static irqreturn_t adm5120_switch_irq(in
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);
@@ -779,12 +785,31 @@ static void adm5120_switch_set_vlan_port
/* ------------------------------------------------------------------------ */
+#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) {
@@ -809,6 +834,7 @@ static int adm5120_if_open(struct net_de
return 0;
err:
+ adm5120_if_napi_disable(dev);
return err;
}
@@ -818,6 +844,7 @@ static int adm5120_if_stop(struct net_de
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);
@@ -1001,6 +1028,9 @@ static struct net_device *adm5120_if_all
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;
@@ -1010,13 +1040,11 @@ static struct net_device *adm5120_if_all
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;
}