diff options
| author | Saeed Bishara <saeed@marvell.com> | 2009-05-06 03:02:01 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-06 22:33:39 (GMT) |
| commit | e0ca84105bca8691f39ef7ff221a88046ba11f23 (patch) | |
| tree | 9c68d0490a5537dd51aa4d813444e4fe98713ab9 /drivers/net/mv643xx_eth.c | |
| parent | 7fd96ce47ff83fc17ab78d465d8e067467a7f51e (diff) | |
| download | linux-e0ca84105bca8691f39ef7ff221a88046ba11f23.tar.xz | |
mv643xx_eth: only unmask RX and TX_END interrupts for available queues
It is not a good idea to blindly unmask the RX and TX_END interrupts
for all eight queues on all mv643xx_eth hardware, since some variations
of the hardware have less than eight transmit/receive queues, and the
RX/TX_END interrupts for the queues they don't have can be in use by
other interrupt sources.
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/mv643xx_eth.c')
| -rw-r--r-- | drivers/net/mv643xx_eth.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index 05bb1c5..d583852 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -123,7 +123,9 @@ static char mv643xx_eth_driver_version[] = "1.4"; #define TX_BW_BURST 0x005c #define INT_CAUSE 0x0060 #define INT_TX_END 0x07f80000 +#define INT_TX_END_0 0x00080000 #define INT_RX 0x000003fc +#define INT_RX_0 0x00000004 #define INT_EXT 0x00000002 #define INT_CAUSE_EXT 0x0064 #define INT_EXT_LINK_PHY 0x00110000 @@ -392,6 +394,7 @@ struct mv643xx_eth_private { struct work_struct tx_timeout_task; struct napi_struct napi; + u32 int_mask; u8 oom; u8 work_link; u8 work_tx; @@ -2058,15 +2061,16 @@ static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp) u32 int_cause; u32 int_cause_ext; - int_cause = rdlp(mp, INT_CAUSE) & (INT_TX_END | INT_RX | INT_EXT); + int_cause = rdlp(mp, INT_CAUSE) & mp->int_mask; if (int_cause == 0) return 0; int_cause_ext = 0; - if (int_cause & INT_EXT) + if (int_cause & INT_EXT) { + int_cause &= ~INT_EXT; int_cause_ext = rdlp(mp, INT_CAUSE_EXT); + } - int_cause &= INT_TX_END | INT_RX; if (int_cause) { wrlp(mp, INT_CAUSE, ~int_cause); mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) & @@ -2212,7 +2216,7 @@ static int mv643xx_eth_poll(struct napi_struct *napi, int budget) if (mp->oom) mod_timer(&mp->rx_oom, jiffies + (HZ / 10)); napi_complete(napi); - wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT); + wrlp(mp, INT_MASK, mp->int_mask); } return work_done; @@ -2366,6 +2370,8 @@ static int mv643xx_eth_open(struct net_device *dev) skb_queue_head_init(&mp->rx_recycle); + mp->int_mask = INT_EXT; + for (i = 0; i < mp->rxq_count; i++) { err = rxq_init(mp, i); if (err) { @@ -2375,6 +2381,7 @@ static int mv643xx_eth_open(struct net_device *dev) } rxq_refill(mp->rxq + i, INT_MAX); + mp->int_mask |= INT_RX_0 << i; } if (mp->oom) { @@ -2389,12 +2396,13 @@ static int mv643xx_eth_open(struct net_device *dev) txq_deinit(mp->txq + i); goto out_free; } + mp->int_mask |= INT_TX_END_0 << i; } port_start(mp); wrlp(mp, INT_MASK_EXT, INT_EXT_LINK_PHY | INT_EXT_TX); - wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT); + wrlp(mp, INT_MASK, mp->int_mask); return 0; @@ -2538,7 +2546,7 @@ static void mv643xx_eth_netpoll(struct net_device *dev) mv643xx_eth_irq(dev->irq, dev); - wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT); + wrlp(mp, INT_MASK, mp->int_mask); } #endif |