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mv643xx_eth: delete unused and uninteresting interrupt source mask bits 

Delete a couple of unused and uninteresting interrupt source mask bits:
- The receive resource underrun interrupt sources are uninteresting
  because if we are in out-of-memory mode, we are already dealing with
  the issue, and we don't need the hardware to remind us again that we
  are out of memory.
- The LINK and PHY interrupt sources can be coalesced into one define,
  since we always use them together.
- The transmit resource underrun interrupt source can be disabled since
  we never activate the head descriptor of a paged skb until the
  fragments are all activated, so transmit underrun during a packet
  should never happen.
- The INT_EXT_TX_0 define is never used.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
This commit is contained in:
Lennert Buytenhek 2008-08-28 06:10:04 +02:00 committed by Lennert Buytenhek
parent 4fdeca3f4e
commit befefe2177
1 changed files with 6 additions and 11 deletions
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17
drivers/net/mv643xx_eth.c
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@ -105,14 +105,11 @@ static char mv643xx_eth_driver_version[] = "1.3";
#define INT_CAUSE(p) (0x0460 + ((p) << 10))
#define INT_TX_END_0 0x00080000
#define INT_TX_END 0x07f80000
#define INT_RX 0x0007fbfc
#define INT_RX 0x000003fc
#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 0x0000ffff
#define INT_EXT_LINK_PHY 0x00110000
#define INT_EXT_TX 0x000000ff
#define INT_MASK(p) (0x0468 + ((p) << 10))
#define INT_MASK_EXT(p) (0x046c + ((p) << 10))
#define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
@ -1815,11 +1812,11 @@ static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
int_cause_ext = 0;
if (int_cause & INT_EXT) {
int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num))
& (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
& (INT_EXT_LINK_PHY | INT_EXT_TX);
wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext);
}
if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK))
if (int_cause_ext & INT_EXT_LINK_PHY)
handle_link_event(mp);
/*
@ -2059,9 +2056,7 @@ static int mv643xx_eth_open(struct net_device *dev)
set_rx_coal(mp, 0);
set_tx_coal(mp, 0);
wrl(mp, INT_MASK_EXT(mp->port_num),
INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
wrl(mp, INT_MASK_EXT(mp->port_num), INT_EXT_LINK_PHY | INT_EXT_TX);
wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
return 0;