[PATCH 6/7] vxge: independent interrupt moderation

[Jon Mason <jon.mason@exar.com>]

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 <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
---
 drivers/net/vxge/vxge-config.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

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;
 }
 
-- 
1.7.0.4