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path: root/drivers/net/ethernet/intel/e1000e/netdev.c
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Diffstat (limited to 'drivers/net/ethernet/intel/e1000e/netdev.c')
-rw-r--r--drivers/net/ethernet/intel/e1000e/netdev.c163
1 files changed, 100 insertions, 63 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 9b4ec13d9161..75e60897b7e7 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -242,7 +242,7 @@ static void e1000e_dump(struct e1000_adapter *adapter)
dev_info(&adapter->pdev->dev, "Net device Info\n");
pr_info("Device Name state trans_start last_rx\n");
pr_info("%-15s %016lX %016lX %016lX\n", netdev->name,
- netdev->state, netdev->trans_start, netdev->last_rx);
+ netdev->state, dev_trans_start(netdev), netdev->last_rx);
}
/* Print Registers */
@@ -317,8 +317,8 @@ static void e1000e_dump(struct e1000_adapter *adapter)
else
next_desc = "";
pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
- (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
- ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')),
+ (!(le64_to_cpu(u0->b) & BIT(29)) ? 'l' :
+ ((le64_to_cpu(u0->b) & BIT(20)) ? 'd' : 'c')),
i,
(unsigned long long)le64_to_cpu(u0->a),
(unsigned long long)le64_to_cpu(u0->b),
@@ -2018,7 +2018,7 @@ static void e1000_configure_msix(struct e1000_adapter *adapter)
adapter->eiac_mask |= E1000_IMS_OTHER;
/* Cause Tx interrupts on every write back */
- ivar |= (1 << 31);
+ ivar |= BIT(31);
ew32(IVAR, ivar);
@@ -2709,7 +2709,7 @@ static int e1000_vlan_rx_add_vid(struct net_device *netdev,
if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
index = (vid >> 5) & 0x7F;
vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
- vfta |= (1 << (vid & 0x1F));
+ vfta |= BIT((vid & 0x1F));
hw->mac.ops.write_vfta(hw, index, vfta);
}
@@ -2737,7 +2737,7 @@ static int e1000_vlan_rx_kill_vid(struct net_device *netdev,
if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
index = (vid >> 5) & 0x7F;
vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
- vfta &= ~(1 << (vid & 0x1F));
+ vfta &= ~BIT((vid & 0x1F));
hw->mac.ops.write_vfta(hw, index, vfta);
}
@@ -2878,7 +2878,7 @@ static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
/* Enable this decision filter in MANC2H */
if (mdef)
- manc2h |= (1 << i);
+ manc2h |= BIT(i);
j |= mdef;
}
@@ -2891,7 +2891,7 @@ static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
if (er32(MDEF(i)) == 0) {
ew32(MDEF(i), (E1000_MDEF_PORT_623 |
E1000_MDEF_PORT_664));
- manc2h |= (1 << 1);
+ manc2h |= BIT(1);
j++;
break;
}
@@ -2971,7 +2971,7 @@ static void e1000_configure_tx(struct e1000_adapter *adapter)
/* set the speed mode bit, we'll clear it if we're not at
* gigabit link later
*/
-#define SPEED_MODE_BIT (1 << 21)
+#define SPEED_MODE_BIT BIT(21)
tarc |= SPEED_MODE_BIT;
ew32(TARC(0), tarc);
}
@@ -3071,12 +3071,12 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter)
e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
phy_data &= 0xfff8;
- phy_data |= (1 << 2);
+ phy_data |= BIT(2);
e1e_wphy(hw, PHY_REG(770, 26), phy_data);
e1e_rphy(hw, 22, &phy_data);
phy_data &= 0x0fff;
- phy_data |= (1 << 14);
+ phy_data |= BIT(14);
e1e_wphy(hw, 0x10, 0x2823);
e1e_wphy(hw, 0x11, 0x0003);
e1e_wphy(hw, 22, phy_data);
@@ -3368,12 +3368,12 @@ static int e1000e_write_uc_addr_list(struct net_device *netdev)
* combining
*/
netdev_for_each_uc_addr(ha, netdev) {
- int rval;
+ int ret_val;
if (!rar_entries)
break;
- rval = hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
- if (rval < 0)
+ ret_val = hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
+ if (ret_val < 0)
return -ENOMEM;
count++;
}
@@ -3503,8 +3503,8 @@ s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca)
!(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_ENABLED)) {
u32 fextnvm7 = er32(FEXTNVM7);
- if (!(fextnvm7 & (1 << 0))) {
- ew32(FEXTNVM7, fextnvm7 | (1 << 0));
+ if (!(fextnvm7 & BIT(0))) {
+ ew32(FEXTNVM7, fextnvm7 | BIT(0));
e1e_flush();
}
}
@@ -3580,7 +3580,6 @@ static int e1000e_config_hwtstamp(struct e1000_adapter *adapter,
bool is_l4 = false;
bool is_l2 = false;
u32 regval;
- s32 ret_val;
if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
return -EINVAL;
@@ -3719,16 +3718,6 @@ static int e1000e_config_hwtstamp(struct e1000_adapter *adapter,
er32(RXSTMPH);
er32(TXSTMPH);
- /* Get and set the System Time Register SYSTIM base frequency */
- ret_val = e1000e_get_base_timinca(adapter, &regval);
- if (ret_val)
- return ret_val;
- ew32(TIMINCA, regval);
-
- /* reset the ns time counter */
- timecounter_init(&adapter->tc, &adapter->cc,
- ktime_to_ns(ktime_get_real()));
-
return 0;
}
@@ -3839,7 +3828,7 @@ static void e1000_flush_rx_ring(struct e1000_adapter *adapter)
/* update thresholds: prefetch threshold to 31, host threshold to 1
* and make sure the granularity is "descriptors" and not "cache lines"
*/
- rxdctl |= (0x1F | (1 << 8) | E1000_RXDCTL_THRESH_UNIT_DESC);
+ rxdctl |= (0x1F | BIT(8) | E1000_RXDCTL_THRESH_UNIT_DESC);
ew32(RXDCTL(0), rxdctl);
/* momentarily enable the RX ring for the changes to take effect */
@@ -3885,6 +3874,53 @@ static void e1000_flush_desc_rings(struct e1000_adapter *adapter)
}
/**
+ * e1000e_systim_reset - reset the timesync registers after a hardware reset
+ * @adapter: board private structure
+ *
+ * When the MAC is reset, all hardware bits for timesync will be reset to the
+ * default values. This function will restore the settings last in place.
+ * Since the clock SYSTIME registers are reset, we will simply restore the
+ * cyclecounter to the kernel real clock time.
+ **/
+static void e1000e_systim_reset(struct e1000_adapter *adapter)
+{
+ struct ptp_clock_info *info = &adapter->ptp_clock_info;
+ struct e1000_hw *hw = &adapter->hw;
+ unsigned long flags;
+ u32 timinca;
+ s32 ret_val;
+
+ if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
+ return;
+
+ if (info->adjfreq) {
+ /* restore the previous ptp frequency delta */
+ ret_val = info->adjfreq(info, adapter->ptp_delta);
+ } else {
+ /* set the default base frequency if no adjustment possible */
+ ret_val = e1000e_get_base_timinca(adapter, &timinca);
+ if (!ret_val)
+ ew32(TIMINCA, timinca);
+ }
+
+ if (ret_val) {
+ dev_warn(&adapter->pdev->dev,
+ "Failed to restore TIMINCA clock rate delta: %d\n",
+ ret_val);
+ return;
+ }
+
+ /* reset the systim ns time counter */
+ spin_lock_irqsave(&adapter->systim_lock, flags);
+ timecounter_init(&adapter->tc, &adapter->cc,
+ ktime_to_ns(ktime_get_real()));
+ spin_unlock_irqrestore(&adapter->systim_lock, flags);
+
+ /* restore the previous hwtstamp configuration settings */
+ e1000e_config_hwtstamp(adapter, &adapter->hwtstamp_config);
+}
+
+/**
* e1000e_reset - bring the hardware into a known good state
*
* This function boots the hardware and enables some settings that
@@ -4063,8 +4099,8 @@ void e1000e_reset(struct e1000_adapter *adapter)
e1000e_reset_adaptive(hw);
- /* initialize systim and reset the ns time counter */
- e1000e_config_hwtstamp(adapter, &adapter->hwtstamp_config);
+ /* restore systim and hwtstamp settings */
+ e1000e_systim_reset(adapter);
/* Set EEE advertisement as appropriate */
if (adapter->flags2 & FLAG2_HAS_EEE) {
@@ -4275,7 +4311,7 @@ static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc)
struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter,
cc);
struct e1000_hw *hw = &adapter->hw;
- u32 systimel_1, systimel_2, systimeh;
+ u32 systimel, systimeh;
cycle_t systim, systim_next;
/* SYSTIMH latching upon SYSTIML read does not work well.
* This means that if SYSTIML overflows after we read it but before
@@ -4283,24 +4319,25 @@ static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc)
* will experience a huge non linear increment in the systime value
* to fix that we test for overflow and if true, we re-read systime.
*/
- systimel_1 = er32(SYSTIML);
+ systimel = er32(SYSTIML);
systimeh = er32(SYSTIMH);
- systimel_2 = er32(SYSTIML);
- /* Check for overflow. If there was no overflow, use the values */
- if (systimel_1 < systimel_2) {
- systim = (cycle_t)systimel_1;
- systim |= (cycle_t)systimeh << 32;
- } else {
- /* There was an overflow, read again SYSTIMH, and use
- * systimel_2
- */
- systimeh = er32(SYSTIMH);
- systim = (cycle_t)systimel_2;
- systim |= (cycle_t)systimeh << 32;
+ /* Is systimel is so large that overflow is possible? */
+ if (systimel >= (u32)0xffffffff - E1000_TIMINCA_INCVALUE_MASK) {
+ u32 systimel_2 = er32(SYSTIML);
+ if (systimel > systimel_2) {
+ /* There was an overflow, read again SYSTIMH, and use
+ * systimel_2
+ */
+ systimeh = er32(SYSTIMH);
+ systimel = systimel_2;
+ }
}
+ systim = (cycle_t)systimel;
+ systim |= (cycle_t)systimeh << 32;
if ((hw->mac.type == e1000_82574) || (hw->mac.type == e1000_82583)) {
- u64 incvalue, time_delta, rem, temp;
+ u64 time_delta, rem, temp;
+ u32 incvalue;
int i;
/* errata for 82574/82583 possible bad bits read from SYSTIMH/L
@@ -4495,7 +4532,7 @@ static int e1000_test_msi(struct e1000_adapter *adapter)
}
/**
- * e1000_open - Called when a network interface is made active
+ * e1000e_open - Called when a network interface is made active
* @netdev: network interface device structure
*
* Returns 0 on success, negative value on failure
@@ -4506,7 +4543,7 @@ static int e1000_test_msi(struct e1000_adapter *adapter)
* handler is registered with the OS, the watchdog timer is started,
* and the stack is notified that the interface is ready.
**/
-static int e1000_open(struct net_device *netdev)
+int e1000e_open(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
@@ -4604,7 +4641,7 @@ err_setup_tx:
}
/**
- * e1000_close - Disables a network interface
+ * e1000e_close - Disables a network interface
* @netdev: network interface device structure
*
* Returns 0, this is not allowed to fail
@@ -4614,7 +4651,7 @@ err_setup_tx:
* needs to be disabled. A global MAC reset is issued to stop the
* hardware, and all transmit and receive resources are freed.
**/
-static int e1000_close(struct net_device *netdev)
+int e1000e_close(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct pci_dev *pdev = adapter->pdev;
@@ -6861,7 +6898,7 @@ static void e1000_eeprom_checks(struct e1000_adapter *adapter)
ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
le16_to_cpus(&buf);
- if (!ret_val && (!(buf & (1 << 0)))) {
+ if (!ret_val && (!(buf & BIT(0)))) {
/* Deep Smart Power Down (DSPD) */
dev_warn(&adapter->pdev->dev,
"Warning: detected DSPD enabled in EEPROM\n");
@@ -6920,8 +6957,8 @@ static int e1000_set_features(struct net_device *netdev,
}
static const struct net_device_ops e1000e_netdev_ops = {
- .ndo_open = e1000_open,
- .ndo_stop = e1000_close,
+ .ndo_open = e1000e_open,
+ .ndo_stop = e1000e_close,
.ndo_start_xmit = e1000_xmit_frame,
.ndo_get_stats64 = e1000e_get_stats64,
.ndo_set_rx_mode = e1000e_set_rx_mode,
@@ -6965,7 +7002,7 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
int bars, i, err, pci_using_dac;
u16 eeprom_data = 0;
u16 eeprom_apme_mask = E1000_EEPROM_APME;
- s32 rval = 0;
+ s32 ret_val = 0;
if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
aspm_disable_flag = PCIE_LINK_STATE_L0S;
@@ -7200,18 +7237,18 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
} else if (adapter->flags & FLAG_APME_IN_CTRL3) {
if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
(adapter->hw.bus.func == 1))
- rval = e1000_read_nvm(&adapter->hw,
+ ret_val = e1000_read_nvm(&adapter->hw,
NVM_INIT_CONTROL3_PORT_B,
1, &eeprom_data);
else
- rval = e1000_read_nvm(&adapter->hw,
+ ret_val = e1000_read_nvm(&adapter->hw,
NVM_INIT_CONTROL3_PORT_A,
1, &eeprom_data);
}
/* fetch WoL from EEPROM */
- if (rval)
- e_dbg("NVM read error getting WoL initial values: %d\n", rval);
+ if (ret_val)
+ e_dbg("NVM read error getting WoL initial values: %d\n", ret_val);
else if (eeprom_data & eeprom_apme_mask)
adapter->eeprom_wol |= E1000_WUFC_MAG;
@@ -7231,13 +7268,16 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
device_wakeup_enable(&pdev->dev);
/* save off EEPROM version number */
- rval = e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
+ ret_val = e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
- if (rval) {
- e_dbg("NVM read error getting EEPROM version: %d\n", rval);
+ if (ret_val) {
+ e_dbg("NVM read error getting EEPROM version: %d\n", ret_val);
adapter->eeprom_vers = 0;
}
+ /* init PTP hardware clock */
+ e1000e_ptp_init(adapter);
+
/* reset the hardware with the new settings */
e1000e_reset(adapter);
@@ -7256,9 +7296,6 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
/* carrier off reporting is important to ethtool even BEFORE open */
netif_carrier_off(netdev);
- /* init PTP hardware clock */
- e1000e_ptp_init(adapter);
-
e1000_print_device_info(adapter);
if (pci_dev_run_wake(pdev))
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.