From 14898532e15660070279afbc8b4360973277db48 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Mon, 25 Jul 2016 06:44:34 -0500
Subject: [PATCH] reduce e1000e boot time by tightening sleep ranges
commit ab6973aed6200510662856afce5e3d1e386b7b64 upstream.
The e1000e driver is a great user of the usleep_range() API,
and has any nice ranges that in principle help power management.
However the ranges that are used only during system startup are
very long (and can add easily 100 msec to the boot time) while
the power savings of such long ranges is irrelevant due to the
one-off, boot only, nature of these functions.
This patch shrinks some of the longest ranges to be shorter
(while still using a power friendly 1 msec range); this saves
100msec+ of boot time on my BDW NUCs
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com>
---
.../net/ethernet/intel/e1000e/80003es2lan.c | 2 +-
drivers/net/ethernet/intel/e1000e/82571.c | 2 +-
drivers/net/ethernet/intel/e1000e/ethtool.c | 14 ++++++-------
drivers/net/ethernet/intel/e1000e/ich8lan.c | 20 +++++++++----------
drivers/net/ethernet/intel/e1000e/mac.c | 2 +-
drivers/net/ethernet/intel/e1000e/netdev.c | 14 ++++++-------
drivers/net/ethernet/intel/e1000e/nvm.c | 2 +-
7 files changed, 28 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ethernet/intel/e1000e/80003es2lan.c b/drivers/net/ethernet/intel/e1000e/80003es2lan.c
index 257bd59bc9c6..94bce9823336 100644
--- a/drivers/net/ethernet/intel/e1000e/80003es2lan.c
+++ b/drivers/net/ethernet/intel/e1000e/80003es2lan.c
@@ -680,7 +680,7 @@ static s32 e1000_reset_hw_80003es2lan(struct e1000_hw *hw)
ew32(TCTL, E1000_TCTL_PSP);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
ctrl = er32(CTRL);
diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
index b9309302c29e..2c1bab377b2a 100644
--- a/drivers/net/ethernet/intel/e1000e/82571.c
+++ b/drivers/net/ethernet/intel/e1000e/82571.c
@@ -959,7 +959,7 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
ew32(TCTL, tctl);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
/* Must acquire the MDIO ownership before MAC reset.
* Ownership defaults to firmware after a reset.
diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c b/drivers/net/ethernet/intel/e1000e/ethtool.c
index 02ebf208f48b..08342698386d 100644
--- a/drivers/net/ethernet/intel/e1000e/ethtool.c
+++ b/drivers/net/ethernet/intel/e1000e/ethtool.c
@@ -1014,7 +1014,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
/* Disable all the interrupts */
ew32(IMC, 0xFFFFFFFF);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
/* Test each interrupt */
for (i = 0; i < 10; i++) {
@@ -1046,7 +1046,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
ew32(IMC, mask);
ew32(ICS, mask);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
if (adapter->test_icr & mask) {
*data = 3;
@@ -1064,7 +1064,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
ew32(IMS, mask);
ew32(ICS, mask);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
if (!(adapter->test_icr & mask)) {
*data = 4;
@@ -1082,7 +1082,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
ew32(IMC, ~mask & 0x00007FFF);
ew32(ICS, ~mask & 0x00007FFF);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
if (adapter->test_icr) {
*data = 5;
@@ -1094,7 +1094,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
/* Disable all the interrupts */
ew32(IMC, 0xFFFFFFFF);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
/* Unhook test interrupt handler */
free_irq(irq, netdev);
@@ -1470,7 +1470,7 @@ static int e1000_set_82571_fiber_loopback(struct e1000_adapter *adapter)
*/
ew32(SCTL, E1000_SCTL_ENABLE_SERDES_LOOPBACK);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
return 0;
}
@@ -1584,7 +1584,7 @@ static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
hw->phy.media_type == e1000_media_type_internal_serdes) {
ew32(SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
break;
}
/* Fall Through */
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index 7998a73b6a0f..a1fab77b2096 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -271,7 +271,7 @@ static void e1000_toggle_lanphypc_pch_lpt(struct e1000_hw *hw)
u16 count = 20;
do {
- usleep_range(5000, 10000);
+ usleep_range(5000, 6000);
} while (!(er32(CTRL_EXT) & E1000_CTRL_EXT_LPCD) && count--);
msleep(30);
@@ -405,7 +405,7 @@ static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
/* Ungate automatic PHY configuration on non-managed 82579 */
if ((hw->mac.type == e1000_pch2lan) &&
!(fwsm & E1000_ICH_FWSM_FW_VALID)) {
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
e1000_gate_hw_phy_config_ich8lan(hw, false);
}
@@ -531,7 +531,7 @@ static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
phy->id = 0;
while ((e1000_phy_unknown == e1000e_get_phy_type_from_id(phy->id)) &&
(i++ < 100)) {
- usleep_range(1000, 2000);
+ usleep_range(1000, 1100);
ret_val = e1000e_get_phy_id(hw);
if (ret_val)
return ret_val;
@@ -1244,7 +1244,7 @@ static s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
goto out;
}
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
}
e_dbg("ULP_CONFIG_DONE cleared after %dmsec\n", i * 10);
@@ -2009,7 +2009,7 @@ static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw)
while ((blocked = !(er32(FWSM) & E1000_ICH_FWSM_RSPCIPHY)) &&
(i++ < 30))
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
return blocked ? E1000_BLK_PHY_RESET : 0;
}
@@ -2828,7 +2828,7 @@ static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
return 0;
/* Allow time for h/w to get to quiescent state after reset */
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
/* Perform any necessary post-reset workarounds */
switch (hw->mac.type) {
@@ -2864,7 +2864,7 @@ static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
if (hw->mac.type == e1000_pch2lan) {
/* Ungate automatic PHY configuration on non-managed 82579 */
if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) {
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
e1000_gate_hw_phy_config_ich8lan(hw, false);
}
@@ -3885,7 +3885,7 @@ static s32 e1000_update_nvm_checksum_spt(struct e1000_hw *hw)
*/
if (!ret_val) {
nvm->ops.reload(hw);
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
}
out:
@@ -4036,7 +4036,7 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
*/
if (!ret_val) {
nvm->ops.reload(hw);
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
}
out:
@@ -4660,7 +4660,7 @@ static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
ew32(TCTL, E1000_TCTL_PSP);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
/* Workaround for ICH8 bit corruption issue in FIFO memory */
if (hw->mac.type == e1000_ich8lan) {
diff --git a/drivers/net/ethernet/intel/e1000e/mac.c b/drivers/net/ethernet/intel/e1000e/mac.c
index 4abd55d646c5..e531976f8a67 100644
--- a/drivers/net/ethernet/intel/e1000e/mac.c
+++ b/drivers/net/ethernet/intel/e1000e/mac.c
@@ -797,7 +797,7 @@ static s32 e1000_poll_fiber_serdes_link_generic(struct e1000_hw *hw)
* milliseconds even if the other end is doing it in SW).
*/
for (i = 0; i < FIBER_LINK_UP_LIMIT; i++) {
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
status = er32(STATUS);
if (status & E1000_STATUS_LU)
break;
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index a7b5a47ab83d..35a3290d14c7 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -3207,7 +3207,7 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
ew32(RCTL, rctl & ~E1000_RCTL_EN);
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
if (adapter->flags2 & FLAG2_DMA_BURST) {
/* set the writeback threshold (only takes effect if the RDTR
@@ -4272,7 +4272,7 @@ void e1000e_down(struct e1000_adapter *adapter, bool reset)
/* flush both disables and wait for them to finish */
e1e_flush();
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
e1000_irq_disable(adapter);
@@ -4310,7 +4310,7 @@ void e1000e_reinit_locked(struct e1000_adapter *adapter)
{
might_sleep();
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- usleep_range(1000, 2000);
+ usleep_range(1000, 1100);
e1000e_down(adapter, true);
e1000e_up(adapter);
clear_bit(__E1000_RESETTING, &adapter->state);
@@ -4685,7 +4685,7 @@ int e1000e_close(struct net_device *netdev)
int count = E1000_CHECK_RESET_COUNT;
while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
@@ -6005,7 +6005,7 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
}
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- usleep_range(1000, 2000);
+ usleep_range(1000, 1100);
/* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
adapter->max_frame_size = max_frame;
e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
@@ -6285,7 +6285,7 @@ static int e1000e_pm_freeze(struct device *dev)
int count = E1000_CHECK_RESET_COUNT;
while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
@@ -6700,7 +6700,7 @@ static int e1000e_pm_runtime_suspend(struct device *dev)
int count = E1000_CHECK_RESET_COUNT;
while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
diff --git a/drivers/net/ethernet/intel/e1000e/nvm.c b/drivers/net/ethernet/intel/e1000e/nvm.c
index 937f9af22d26..e609f4df86f4 100644
--- a/drivers/net/ethernet/intel/e1000e/nvm.c
+++ b/drivers/net/ethernet/intel/e1000e/nvm.c
@@ -392,7 +392,7 @@ s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
break;
}
}
- usleep_range(10000, 20000);
+ usleep_range(10000, 11000);
nvm->ops.release(hw);
}
--
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