diff options
| author | Stephen Hemminger <shemminger@osdl.org> | 2006-05-08 15:11:31 -0700 |
|---|---|---|
| committer | Stephen Hemminger <shemminger@osdl.org> | 2006-05-08 16:00:27 -0700 |
| commit | e71ebd73276cc21efc74aba4118ef037cd32e50a (patch) | |
| tree | f19a898ff09d4d78e3334b33c08c48a7bd77ced1 | |
| parent | 01bd75645f94d49cb7ffd61022890166ce00ec2a (diff) | |
| download | linux-e71ebd73276cc21efc74aba4118ef037cd32e50a.tar.bz2 | |
sky2: dont write status ring
It is more efficient not to write the status ring from the
processor and just read the active portion.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
| -rw-r--r-- | drivers/net/sky2.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 940ed699a702..ea23da53677b 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -1865,35 +1865,28 @@ static inline void sky2_tx_done(struct net_device *dev, u16 last) static int sky2_status_intr(struct sky2_hw *hw, int to_do) { int work_done = 0; + u16 hwidx = sky2_read16(hw, STAT_PUT_IDX); rmb(); - for(;;) { + while (hw->st_idx != hwidx) { struct sky2_status_le *le = hw->st_le + hw->st_idx; struct net_device *dev; struct sky2_port *sky2; struct sk_buff *skb; u32 status; u16 length; - u8 link, opcode; - - opcode = le->opcode; - if (!opcode) - break; - opcode &= ~HW_OWNER; hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE); - le->opcode = 0; - link = le->link; - BUG_ON(link >= 2); - dev = hw->dev[link]; + BUG_ON(le->link >= 2); + dev = hw->dev[le->link]; sky2 = netdev_priv(dev); length = le->length; status = le->status; - switch (opcode) { + switch (le->opcode & ~HW_OWNER) { case OP_RXSTAT: skb = sky2_receive(sky2, length, status); if (!skb) @@ -1944,8 +1937,8 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do) default: if (net_ratelimit()) printk(KERN_WARNING PFX - "unknown status opcode 0x%x\n", opcode); - break; + "unknown status opcode 0x%x\n", le->opcode); + goto exit_loop; } } |