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| author | Stephen Hemminger <shemminger@osdl.org> | 2005-12-09 11:35:06 -0800 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-12-12 15:27:21 -0500 |
| commit | 69634ee7366d05b26b2650584bed180edf923125 (patch) | |
| tree | f446c787632620f28f2b89984271788e37a2d9d2 /drivers/net/sky2.c | |
| parent | 3e4b32e11674a40cf50e48a79764f12988641e20 (diff) | |
| download | op-kernel-dev-69634ee7366d05b26b2650584bed180edf923125.zip op-kernel-dev-69634ee7366d05b26b2650584bed180edf923125.tar.gz | |
[PATCH] sky2: interrupt coalescing tuning
Adjust interrupt deferral values for better performance and avoid
starvation issues under stress.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index af9739c..0b82dbb 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -2115,9 +2115,8 @@ static int sky2_reset(struct sky2_hw *hw) sky2_write8(hw, B0_Y2LED, LED_STAT_ON); - /* Turn on descriptor polling (every 75us) */ - sky2_write32(hw, B28_DPT_INI, sky2_us2clk(hw, 75)); - sky2_write8(hw, B28_DPT_CTRL, DPT_START); + /* Turn off descriptor polling */ + sky2_write32(hw, B28_DPT_CTRL, DPT_STOP); /* Turn off receive timestamp */ sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP); @@ -2162,8 +2161,6 @@ static int sky2_reset(struct sky2_hw *hw) /* Set the list last index */ sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1); - sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000)); - /* These status setup values are copied from SysKonnect's driver */ if (is_ec_a1(hw)) { /* WA for dev. #4.3 */ @@ -2174,21 +2171,20 @@ static int sky2_reset(struct sky2_hw *hw) /* set Status-FIFO ISR watermark */ sky2_write8(hw, STAT_FIFO_ISR_WM, 0x07); /* WA for dev. #4.18 */ - + sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 10000)); } else { - sky2_write16(hw, STAT_TX_IDX_TH, 0x000a); - - /* set Status-FIFO watermark */ - sky2_write8(hw, STAT_FIFO_WM, 0x10); + sky2_write16(hw, STAT_TX_IDX_TH, 10); + sky2_write8(hw, STAT_FIFO_WM, 16); /* set Status-FIFO ISR watermark */ if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0) - sky2_write8(hw, STAT_FIFO_ISR_WM, 0x10); - - else /* WA dev 4.109 */ - sky2_write8(hw, STAT_FIFO_ISR_WM, 0x04); + sky2_write8(hw, STAT_FIFO_ISR_WM, 4); + else + sky2_write8(hw, STAT_FIFO_ISR_WM, 16); - sky2_write32(hw, STAT_ISR_TIMER_INI, 0x0190); + sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000)); + sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100)); + sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20)); } /* enable status unit */ |
