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Date: Tue, 3 Jun 2008 13:02:25 +0200
From: Lennert Buytenhek <buytenh@...tstofly.org>
To: Dale Farnsworth <dale@...nsworth.org>
Cc: netdev@...r.kernel.org
Subject: [PATCH 10/39] mv643xx_eth: clarify irq masking and unmasking
Replace the nondescriptive names ETH_INT_UNMASK_ALL and
ETH_INT_UNMASK_ALL_EXT by names of the actual fields being masked
and unmasked in the various writes to the interrupt mask registers.
Signed-off-by: Lennert Buytenhek <buytenh@...vell.com>
---
drivers/net/mv643xx_eth.c | 61 +++++++++++++++++---------------------------
1 files changed, 24 insertions(+), 37 deletions(-)
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index bdb03f3..ffdd3fc 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -97,7 +97,14 @@ static char mv643xx_driver_version[] = "1.0";
#define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
#define TX_BW_MTU(p) (0x0458 + ((p) << 10))
#define INT_CAUSE(p) (0x0460 + ((p) << 10))
+#define INT_RX 0x00000804
+#define INT_EXT 0x00000002
#define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10))
+#define INT_EXT_LINK 0x00100000
+#define INT_EXT_PHY 0x00010000
+#define INT_EXT_TX_ERROR_0 0x00000100
+#define INT_EXT_TX_0 0x00000001
+#define INT_EXT_TX 0x00000101
#define INT_MASK(p) (0x0468 + ((p) << 10))
#define INT_MASK_EXT(p) (0x046c + ((p) << 10))
#define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
@@ -153,26 +160,6 @@ static char mv643xx_driver_version[] = "1.0";
#define PORT_DEFAULT_TRANSMIT_QUEUE_SIZE 800
#define PORT_DEFAULT_RECEIVE_QUEUE_SIZE 400
-#define ETH_RX_QUEUES_ENABLED (1 << 0) /* use only Q0 for receive */
-#define ETH_TX_QUEUES_ENABLED (1 << 0) /* use only Q0 for transmit */
-
-#define ETH_INT_CAUSE_RX_DONE (ETH_RX_QUEUES_ENABLED << 2)
-#define ETH_INT_CAUSE_RX_ERROR (ETH_RX_QUEUES_ENABLED << 9)
-#define ETH_INT_CAUSE_RX (ETH_INT_CAUSE_RX_DONE | ETH_INT_CAUSE_RX_ERROR)
-#define ETH_INT_CAUSE_EXT 0x00000002
-#define ETH_INT_UNMASK_ALL (ETH_INT_CAUSE_RX | ETH_INT_CAUSE_EXT)
-
-#define ETH_INT_CAUSE_TX_DONE (ETH_TX_QUEUES_ENABLED << 0)
-#define ETH_INT_CAUSE_TX_ERROR (ETH_TX_QUEUES_ENABLED << 8)
-#define ETH_INT_CAUSE_TX (ETH_INT_CAUSE_TX_DONE | ETH_INT_CAUSE_TX_ERROR)
-#define ETH_INT_CAUSE_PHY 0x00010000
-#define ETH_INT_CAUSE_STATE 0x00100000
-#define ETH_INT_UNMASK_ALL_EXT (ETH_INT_CAUSE_TX | ETH_INT_CAUSE_PHY | \
- ETH_INT_CAUSE_STATE)
-
-#define ETH_INT_MASK_ALL 0x00000000
-#define ETH_INT_MASK_ALL_EXT 0x00000000
-
#define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */
#define PHY_WAIT_MICRO_SECONDS 10
@@ -832,7 +819,7 @@ static int mv643xx_poll(struct napi_struct *napi, int budget)
netif_rx_complete(dev, napi);
wrl(mp, INT_CAUSE(port_num), 0);
wrl(mp, INT_CAUSE_EXT(port_num), 0);
- wrl(mp, INT_MASK(port_num), ETH_INT_UNMASK_ALL);
+ wrl(mp, INT_MASK(port_num), INT_RX | INT_EXT);
}
return work_done;
@@ -988,7 +975,7 @@ static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
/* ensure all descriptors are written before poking hardware */
wmb();
- mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
+ mv643xx_eth_port_enable_tx(mp, 1);
mp->tx_desc_count += nr_frags + 1;
}
@@ -1971,21 +1958,21 @@ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
unsigned int port_num = mp->port_num;
/* Read interrupt cause registers */
- eth_int_cause = rdl(mp, INT_CAUSE(port_num)) & ETH_INT_UNMASK_ALL;
- if (eth_int_cause & ETH_INT_CAUSE_EXT) {
+ eth_int_cause = rdl(mp, INT_CAUSE(port_num)) & (INT_RX | INT_EXT);
+ if (eth_int_cause & INT_EXT) {
eth_int_cause_ext = rdl(mp, INT_CAUSE_EXT(port_num))
- & ETH_INT_UNMASK_ALL_EXT;
+ & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
wrl(mp, INT_CAUSE_EXT(port_num), ~eth_int_cause_ext);
}
/* PHY status changed */
- if (eth_int_cause_ext & (ETH_INT_CAUSE_PHY | ETH_INT_CAUSE_STATE)) {
+ if (eth_int_cause_ext & (INT_EXT_LINK | INT_EXT_PHY)) {
struct ethtool_cmd cmd;
if (mii_link_ok(&mp->mii)) {
mii_ethtool_gset(&mp->mii, &cmd);
mv643xx_eth_update_pscr(dev, &cmd);
- mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
+ mv643xx_eth_port_enable_tx(mp, 1);
if (!netif_carrier_ok(dev)) {
netif_carrier_on(dev);
if (mp->tx_ring_size - mp->tx_desc_count >=
@@ -1999,9 +1986,9 @@ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
}
#ifdef MV643XX_NAPI
- if (eth_int_cause & ETH_INT_CAUSE_RX) {
+ if (eth_int_cause & INT_RX) {
/* schedule the NAPI poll routine to maintain port */
- wrl(mp, INT_MASK(port_num), ETH_INT_MASK_ALL);
+ wrl(mp, INT_MASK(port_num), 0x00000000);
/* wait for previous write to complete */
rdl(mp, INT_MASK(port_num));
@@ -2009,10 +1996,10 @@ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
netif_rx_schedule(dev, &mp->napi);
}
#else
- if (eth_int_cause & ETH_INT_CAUSE_RX)
+ if (eth_int_cause & INT_RX)
mv643xx_eth_receive_queue(dev, INT_MAX);
#endif
- if (eth_int_cause_ext & ETH_INT_CAUSE_TX)
+ if (eth_int_cause_ext & INT_EXT_TX)
mv643xx_eth_free_completed_tx_descs(dev);
/*
@@ -2136,7 +2123,7 @@ static void eth_port_start(struct net_device *dev)
wrl(mp, SDMA_CONFIG(port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
/* Enable port Rx. */
- mv643xx_eth_port_enable_rx(mp, ETH_RX_QUEUES_ENABLED);
+ mv643xx_eth_port_enable_rx(mp, 1);
/* Disable port bandwidth limits by clearing MTU register */
wrl(mp, TX_BW_MTU(port_num), 0);
@@ -2383,10 +2370,10 @@ static int mv643xx_eth_open(struct net_device *dev)
eth_port_set_tx_coal(mp, MV643XX_TX_COAL);
/* Unmask phy and link status changes interrupts */
- wrl(mp, INT_MASK_EXT(port_num), ETH_INT_UNMASK_ALL_EXT);
+ wrl(mp, INT_MASK_EXT(port_num), INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
/* Unmask RX buffer and TX end interrupt */
- wrl(mp, INT_MASK(port_num), ETH_INT_UNMASK_ALL);
+ wrl(mp, INT_MASK(port_num), INT_RX | INT_EXT);
return 0;
@@ -2453,7 +2440,7 @@ static int mv643xx_eth_stop(struct net_device *dev)
unsigned int port_num = mp->port_num;
/* Mask all interrupts on ethernet port */
- wrl(mp, INT_MASK(port_num), ETH_INT_MASK_ALL);
+ wrl(mp, INT_MASK(port_num), 0x00000000);
/* wait for previous write to complete */
rdl(mp, INT_MASK(port_num));
@@ -2558,13 +2545,13 @@ static void mv643xx_netpoll(struct net_device *netdev)
struct mv643xx_private *mp = netdev_priv(netdev);
int port_num = mp->port_num;
- wrl(mp, INT_MASK(port_num), ETH_INT_MASK_ALL);
+ wrl(mp, INT_MASK(port_num), 0x00000000);
/* wait for previous write to complete */
rdl(mp, INT_MASK(port_num));
mv643xx_eth_int_handler(netdev->irq, netdev);
- wrl(mp, INT_MASK(port_num), ETH_INT_UNMASK_ALL);
+ wrl(mp, INT_MASK(port_num), INT_RX | INT_CAUSE_EXT);
}
#endif
--
1.5.3.4
--
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