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Date: Thu, 6 Jan 2011 16:29:52 -0800
From: jeffrey.t.kirsher@...el.com
To: davem@...emloft.net
Cc: Bruce Allan <bruce.w.allan@...el.com>, netdev@...r.kernel.org,
gosp@...hat.com, bphilips@...ell.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 05/12] e1000e: power off PHY after reset when interface is down
From: Bruce Allan <bruce.w.allan@...el.com>
Some Phys supported by the driver do not remain powered off across a reset
of the device when the interface is down, e.g. on 82571, but not on 82574.
This patch powers down (only when WoL is disabled) the PHY after a reset if
the interface is down and the ethtool diagnostics are not currently running.
The ethtool diagnostic function required a minor re-factor as a result, and
the e1000_[get|put]_hw_control() functions are renamed since they are no
longer static to netdev.c as they are needed by the ethtool diagnostics.
A couple minor whitespace issues were cleaned up, too.
Reported-by: Arthur Jones <ajones@...erbed.com>
Signed-off-by: Bruce Allan <bruce.w.allan@...el.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/e1000e/e1000.h | 2 +
drivers/net/e1000e/ethtool.c | 40 ++++++++++++++++++++++-------------
drivers/net/e1000e/netdev.c | 46 +++++++++++++++++++++++------------------
3 files changed, 53 insertions(+), 35 deletions(-)
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index 4b3802a..5255be7 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -497,6 +497,8 @@ extern void e1000e_free_tx_resources(struct e1000_adapter *adapter);
extern void e1000e_update_stats(struct e1000_adapter *adapter);
extern void e1000e_set_interrupt_capability(struct e1000_adapter *adapter);
extern void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter);
+extern void e1000e_get_hw_control(struct e1000_adapter *adapter);
+extern void e1000e_release_hw_control(struct e1000_adapter *adapter);
extern void e1000e_disable_aspm(struct pci_dev *pdev, u16 state);
extern unsigned int copybreak;
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index c942cca..f8ed03d 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -1708,6 +1708,19 @@ static void e1000_diag_test(struct net_device *netdev,
bool if_running = netif_running(netdev);
set_bit(__E1000_TESTING, &adapter->state);
+
+ if (!if_running) {
+ /* Get control of and reset hardware */
+ if (adapter->flags & FLAG_HAS_AMT)
+ e1000e_get_hw_control(adapter);
+
+ e1000e_power_up_phy(adapter);
+
+ adapter->hw.phy.autoneg_wait_to_complete = 1;
+ e1000e_reset(adapter);
+ adapter->hw.phy.autoneg_wait_to_complete = 0;
+ }
+
if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
/* Offline tests */
@@ -1721,8 +1734,6 @@ static void e1000_diag_test(struct net_device *netdev,
if (if_running)
/* indicate we're in test mode */
dev_close(netdev);
- else
- e1000e_reset(adapter);
if (e1000_reg_test(adapter, &data[0]))
eth_test->flags |= ETH_TEST_FL_FAILED;
@@ -1736,8 +1747,6 @@ static void e1000_diag_test(struct net_device *netdev,
eth_test->flags |= ETH_TEST_FL_FAILED;
e1000e_reset(adapter);
- /* make sure the phy is powered up */
- e1000e_power_up_phy(adapter);
if (e1000_loopback_test(adapter, &data[3]))
eth_test->flags |= ETH_TEST_FL_FAILED;
@@ -1759,28 +1768,29 @@ static void e1000_diag_test(struct net_device *netdev,
if (if_running)
dev_open(netdev);
} else {
- if (!if_running && (adapter->flags & FLAG_HAS_AMT)) {
- clear_bit(__E1000_TESTING, &adapter->state);
- dev_open(netdev);
- set_bit(__E1000_TESTING, &adapter->state);
- }
+ /* Online tests */
e_info("online testing starting\n");
- /* Online tests */
- if (e1000_link_test(adapter, &data[4]))
- eth_test->flags |= ETH_TEST_FL_FAILED;
- /* Online tests aren't run; pass by default */
+ /* register, eeprom, intr and loopback tests not run online */
data[0] = 0;
data[1] = 0;
data[2] = 0;
data[3] = 0;
- if (!if_running && (adapter->flags & FLAG_HAS_AMT))
- dev_close(netdev);
+ if (e1000_link_test(adapter, &data[4]))
+ eth_test->flags |= ETH_TEST_FL_FAILED;
clear_bit(__E1000_TESTING, &adapter->state);
}
+
+ if (!if_running) {
+ e1000e_reset(adapter);
+
+ if (adapter->flags & FLAG_HAS_AMT)
+ e1000e_release_hw_control(adapter);
+ }
+
msleep_interruptible(4 * 1000);
}
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 98729a6..fa5b604 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -1980,15 +1980,15 @@ static void e1000_irq_enable(struct e1000_adapter *adapter)
}
/**
- * e1000_get_hw_control - get control of the h/w from f/w
+ * e1000e_get_hw_control - get control of the h/w from f/w
* @adapter: address of board private structure
*
- * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
+ * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
* For ASF and Pass Through versions of f/w this means that
* the driver is loaded. For AMT version (only with 82573)
* of the f/w this means that the network i/f is open.
**/
-static void e1000_get_hw_control(struct e1000_adapter *adapter)
+void e1000e_get_hw_control(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 ctrl_ext;
@@ -2005,16 +2005,16 @@ static void e1000_get_hw_control(struct e1000_adapter *adapter)
}
/**
- * e1000_release_hw_control - release control of the h/w to f/w
+ * e1000e_release_hw_control - release control of the h/w to f/w
* @adapter: address of board private structure
*
- * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
+ * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
* For ASF and Pass Through versions of f/w this means that the
* driver is no longer loaded. For AMT version (only with 82573) i
* of the f/w this means that the network i/f is closed.
*
**/
-static void e1000_release_hw_control(struct e1000_adapter *adapter)
+void e1000e_release_hw_control(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 ctrl_ext;
@@ -2445,7 +2445,7 @@ static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
(vid == adapter->mng_vlan_id)) {
/* release control to f/w */
- e1000_release_hw_control(adapter);
+ e1000e_release_hw_control(adapter);
return;
}
@@ -3187,7 +3187,6 @@ void e1000e_reset(struct e1000_adapter *adapter)
ew32(PBA, pba);
}
-
/*
* flow control settings
*
@@ -3275,7 +3274,7 @@ void e1000e_reset(struct e1000_adapter *adapter)
* that the network interface is in control
*/
if (adapter->flags & FLAG_HAS_AMT)
- e1000_get_hw_control(adapter);
+ e1000e_get_hw_control(adapter);
ew32(WUC, 0);
@@ -3288,6 +3287,13 @@ void e1000e_reset(struct e1000_adapter *adapter)
ew32(VET, ETH_P_8021Q);
e1000e_reset_adaptive(hw);
+
+ if (!netif_running(adapter->netdev) &&
+ !test_bit(__E1000_TESTING, &adapter->state)) {
+ e1000_power_down_phy(adapter);
+ return;
+ }
+
e1000_get_phy_info(hw);
if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
@@ -3573,7 +3579,7 @@ static int e1000_open(struct net_device *netdev)
* interface is now open and reset the part to a known state.
*/
if (adapter->flags & FLAG_HAS_AMT) {
- e1000_get_hw_control(adapter);
+ e1000e_get_hw_control(adapter);
e1000e_reset(adapter);
}
@@ -3637,7 +3643,7 @@ static int e1000_open(struct net_device *netdev)
return 0;
err_req_irq:
- e1000_release_hw_control(adapter);
+ e1000e_release_hw_control(adapter);
e1000_power_down_phy(adapter);
e1000e_free_rx_resources(adapter);
err_setup_rx:
@@ -3692,8 +3698,9 @@ static int e1000_close(struct net_device *netdev)
* If AMT is enabled, let the firmware know that the network
* interface is now closed
*/
- if (adapter->flags & FLAG_HAS_AMT)
- e1000_release_hw_control(adapter);
+ if ((adapter->flags & FLAG_HAS_AMT) &&
+ !test_bit(__E1000_TESTING, &adapter->state))
+ e1000e_release_hw_control(adapter);
if ((adapter->flags & FLAG_HAS_ERT) ||
(adapter->hw.mac.type == e1000_pch2lan))
@@ -5212,7 +5219,7 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
* Release control of h/w to f/w. If f/w is AMT enabled, this
* would have already happened in close and is redundant.
*/
- e1000_release_hw_control(adapter);
+ e1000e_release_hw_control(adapter);
pci_disable_device(pdev);
@@ -5369,7 +5376,7 @@ static int __e1000_resume(struct pci_dev *pdev)
* under the control of the driver.
*/
if (!(adapter->flags & FLAG_HAS_AMT))
- e1000_get_hw_control(adapter);
+ e1000e_get_hw_control(adapter);
return 0;
}
@@ -5616,7 +5623,7 @@ static void e1000_io_resume(struct pci_dev *pdev)
* under the control of the driver.
*/
if (!(adapter->flags & FLAG_HAS_AMT))
- e1000_get_hw_control(adapter);
+ e1000e_get_hw_control(adapter);
}
@@ -5966,7 +5973,7 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
* under the control of the driver.
*/
if (!(adapter->flags & FLAG_HAS_AMT))
- e1000_get_hw_control(adapter);
+ e1000e_get_hw_control(adapter);
strncpy(netdev->name, "eth%d", sizeof(netdev->name) - 1);
err = register_netdev(netdev);
@@ -5985,12 +5992,11 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
err_register:
if (!(adapter->flags & FLAG_HAS_AMT))
- e1000_release_hw_control(adapter);
+ e1000e_release_hw_control(adapter);
err_eeprom:
if (!e1000_check_reset_block(&adapter->hw))
e1000_phy_hw_reset(&adapter->hw);
err_hw_init:
-
kfree(adapter->tx_ring);
kfree(adapter->rx_ring);
err_sw_init:
@@ -6056,7 +6062,7 @@ static void __devexit e1000_remove(struct pci_dev *pdev)
* Release control of h/w to f/w. If f/w is AMT enabled, this
* would have already happened in close and is redundant.
*/
- e1000_release_hw_control(adapter);
+ e1000e_release_hw_control(adapter);
e1000e_reset_interrupt_capability(adapter);
kfree(adapter->tx_ring);
--
1.7.3.4
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