From: Jon Mason Date: Fri, 10 Dec 2010 14:03:01 +0000 (+0000) Subject: vxge: independent interrupt moderation X-Git-Tag: v3.12-rc1~7851^2~244 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b55e7b153f698bb027102759388d0c09542f68bd;p=kernel%2Fkernel-generic.git vxge: independent interrupt moderation Configure the workload clock register and TIM register for independent interrupt moderation based on the individual vpath utilization instead of common link utilization. This greatly improves latency. Signed-off-by: Jon Mason Signed-off-by: Ram Vepa Signed-off-by: David S. Miller --- diff --git a/drivers/net/vxge/vxge-config.c b/drivers/net/vxge/vxge-config.c index 1169aa3..01c05f5 100644 --- a/drivers/net/vxge/vxge-config.c +++ b/drivers/net/vxge/vxge-config.c @@ -4422,8 +4422,7 @@ __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id) if (config->tti.util_sel != VXGE_HW_USE_FLASH_DEFAULT) { val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(0x3f); - val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL( - config->tti.util_sel); + val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(vp_id); } if (config->tti.ltimer_val != VXGE_HW_USE_FLASH_DEFAULT) { @@ -4527,8 +4526,7 @@ __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id) if (config->rti.util_sel != VXGE_HW_USE_FLASH_DEFAULT) { val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(0x3f); - val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL( - config->rti.util_sel); + val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(vp_id); } if (config->rti.ltimer_val != VXGE_HW_USE_FLASH_DEFAULT) { @@ -4549,6 +4547,11 @@ __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id) writeq(val64, &vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_BMAP]); writeq(val64, &vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_BMAP]); + val64 = VXGE_HW_TIM_WRKLD_CLC_WRKLD_EVAL_PRD(150); + val64 |= VXGE_HW_TIM_WRKLD_CLC_WRKLD_EVAL_DIV(0); + val64 |= VXGE_HW_TIM_WRKLD_CLC_CNT_RX_TX(3); + writeq(val64, &vp_reg->tim_wrkld_clc); + return status; }