Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=91a500ac5654766e4d9a6502dfcceb7e0a235f98
Commit: 91a500ac5654766e4d9a6502dfcceb7e0a235f98
Parent: 3f516c00d416bd39aab6cfb348b68919e295fe23
Author: Jay Cliburn <[EMAIL PROTECTED]>
AuthorDate: Thu Jul 19 18:45:12 2007 -0500
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Tue Jul 24 16:28:41 2007 -0400
atl1: change cmb write threshold
Change the threshold number of descriptors used to trigger CMB writes.
The vendor reports that under certain conditions this will reduce the
number of unnecessary tx interrupts and improve rx performance.
This change is lifted directly from vendor version 1.2.40.2 of the L1
driver.
Signed-off-by: Jay Cliburn <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/net/atl1/atl1_main.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/net/atl1/atl1_main.c b/drivers/net/atl1/atl1_main.c
index 3b8f633..6aa2dc3 100644
--- a/drivers/net/atl1/atl1_main.c
+++ b/drivers/net/atl1/atl1_main.c
@@ -917,7 +917,10 @@ static u32 atl1_configure(struct atl1_adapter *adapter)
iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
/* config CMB / SMB */
- value = hw->cmb_rrd | ((u32) hw->cmb_tpd << 16);
+ value = (hw->cmb_tpd > adapter->tpd_ring.count) ?
+ hw->cmb_tpd : adapter->tpd_ring.count;
+ value <<= 16;
+ value |= hw->cmb_rrd;
iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
-
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