[dpdk-dev] [PATCH v2 28/40] net/ixgbe/base: reduce delay for SWFW semaphore

[Xiao Wang]

This patch reduces the SWFW semaphore/PHY Token retry delay.

ixgbe_release_swfw_sync_X540: Reduce 5 ms delay after releasing
semaphore to 2 ms. HW team indicated 1 ms delay would be sufficient
for FW access.

ixgbe_acquire_swfw_sync_X540: Remove 5 ms delay after acquiring
semaphore.

ixgbe_acquire_swfw_sync_X550a: Remove 5 ms delay since there are
two 2 ms delays in the semaphore release flow.

Signed-off-by: Xiao Wang <xiao.w.wang at intel.com>
---

v2: - Removed the unrelated blank line change from this patch.

---
 drivers/net/ixgbe/base/ixgbe_x540.c | 3 +--
 drivers/net/ixgbe/base/ixgbe_x550.c | 1 -
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ixgbe/base/ixgbe_x540.c b/drivers/net/ixgbe/base/ixgbe_x540.c
index 24e9c93..c58f36a 100644
--- a/drivers/net/ixgbe/base/ixgbe_x540.c
+++ b/drivers/net/ixgbe/base/ixgbe_x540.c
@@ -783,7 +783,6 @@ s32 ixgbe_acquire_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
 			IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw),
 					swfw_sync);
 			ixgbe_release_swfw_sync_semaphore(hw);
-			msec_delay(5);
 			return IXGBE_SUCCESS;
 		}
 		/* Firmware currently using resource (fwmask), hardware
@@ -860,7 +859,7 @@ void ixgbe_release_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
 	IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw), swfw_sync);
 
 	ixgbe_release_swfw_sync_semaphore(hw);
-	msec_delay(5);
+	msec_delay(2);
 }
 
 /**
diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index 32759cc..f2e885c 100644
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c
@@ -4523,7 +4523,6 @@ STATIC s32 ixgbe_acquire_swfw_sync_X550a(struct ixgbe_hw *hw, u32 mask)
 			ixgbe_release_swfw_sync_X540(hw, hmask);
 		if (status != IXGBE_ERR_TOKEN_RETRY)
 			return status;
-		msec_delay(FW_PHY_TOKEN_DELAY);
 	}
 
 	return status;
-- 
1.9.3