Release 4.10 drivers/net/ethernet/intel/e1000/e1000_main.c
/*******************************************************************************
Intel PRO/1000 Linux driver
Copyright(c) 1999 - 2006 Intel Corporation.
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information:
Linux NICS <linux.nics@intel.com>
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include "e1000.h"
#include <net/ip6_checksum.h>
#include <linux/io.h>
#include <linux/prefetch.h>
#include <linux/bitops.h>
#include <linux/if_vlan.h>
char e1000_driver_name[] = "e1000";
static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
#define DRV_VERSION "7.3.21-k8-NAPI"
const char e1000_driver_version[] = DRV_VERSION;
static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
/* e1000_pci_tbl - PCI Device ID Table
*
* Last entry must be all 0s
*
* Macro expands to...
* {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
*/
static const struct pci_device_id e1000_pci_tbl[] = {
INTEL_E1000_ETHERNET_DEVICE(0x1000),
INTEL_E1000_ETHERNET_DEVICE(0x1001),
INTEL_E1000_ETHERNET_DEVICE(0x1004),
INTEL_E1000_ETHERNET_DEVICE(0x1008),
INTEL_E1000_ETHERNET_DEVICE(0x1009),
INTEL_E1000_ETHERNET_DEVICE(0x100C),
INTEL_E1000_ETHERNET_DEVICE(0x100D),
INTEL_E1000_ETHERNET_DEVICE(0x100E),
INTEL_E1000_ETHERNET_DEVICE(0x100F),
INTEL_E1000_ETHERNET_DEVICE(0x1010),
INTEL_E1000_ETHERNET_DEVICE(0x1011),
INTEL_E1000_ETHERNET_DEVICE(0x1012),
INTEL_E1000_ETHERNET_DEVICE(0x1013),
INTEL_E1000_ETHERNET_DEVICE(0x1014),
INTEL_E1000_ETHERNET_DEVICE(0x1015),
INTEL_E1000_ETHERNET_DEVICE(0x1016),
INTEL_E1000_ETHERNET_DEVICE(0x1017),
INTEL_E1000_ETHERNET_DEVICE(0x1018),
INTEL_E1000_ETHERNET_DEVICE(0x1019),
INTEL_E1000_ETHERNET_DEVICE(0x101A),
INTEL_E1000_ETHERNET_DEVICE(0x101D),
INTEL_E1000_ETHERNET_DEVICE(0x101E),
INTEL_E1000_ETHERNET_DEVICE(0x1026),
INTEL_E1000_ETHERNET_DEVICE(0x1027),
INTEL_E1000_ETHERNET_DEVICE(0x1028),
INTEL_E1000_ETHERNET_DEVICE(0x1075),
INTEL_E1000_ETHERNET_DEVICE(0x1076),
INTEL_E1000_ETHERNET_DEVICE(0x1077),
INTEL_E1000_ETHERNET_DEVICE(0x1078),
INTEL_E1000_ETHERNET_DEVICE(0x1079),
INTEL_E1000_ETHERNET_DEVICE(0x107A),
INTEL_E1000_ETHERNET_DEVICE(0x107B),
INTEL_E1000_ETHERNET_DEVICE(0x107C),
INTEL_E1000_ETHERNET_DEVICE(0x108A),
INTEL_E1000_ETHERNET_DEVICE(0x1099),
INTEL_E1000_ETHERNET_DEVICE(0x10B5),
INTEL_E1000_ETHERNET_DEVICE(0x2E6E),
/* required last entry */
{0,}
};
MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
int e1000_up(struct e1000_adapter *adapter);
void e1000_down(struct e1000_adapter *adapter);
void e1000_reinit_locked(struct e1000_adapter *adapter);
void e1000_reset(struct e1000_adapter *adapter);
int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
struct e1000_tx_ring *txdr);
static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
struct e1000_rx_ring *rxdr);
static void e1000_free_tx_resources(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring);
static void e1000_free_rx_resources(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring);
void e1000_update_stats(struct e1000_adapter *adapter);
static int e1000_init_module(void);
static void e1000_exit_module(void);
static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static void e1000_remove(struct pci_dev *pdev);
static int e1000_alloc_queues(struct e1000_adapter *adapter);
static int e1000_sw_init(struct e1000_adapter *adapter);
int e1000_open(struct net_device *netdev);
int e1000_close(struct net_device *netdev);
static void e1000_configure_tx(struct e1000_adapter *adapter);
static void e1000_configure_rx(struct e1000_adapter *adapter);
static void e1000_setup_rctl(struct e1000_adapter *adapter);
static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring);
static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring);
static void e1000_set_rx_mode(struct net_device *netdev);
static void e1000_update_phy_info_task(struct work_struct *work);
static void e1000_watchdog(struct work_struct *work);
static void e1000_82547_tx_fifo_stall_task(struct work_struct *work);
static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
struct net_device *netdev);
static struct net_device_stats *e1000_get_stats(struct net_device *netdev);
static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
static int e1000_set_mac(struct net_device *netdev, void *p);
static irqreturn_t e1000_intr(int irq, void *data);
static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring);
static int e1000_clean(struct napi_struct *napi, int budget);
static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int *work_done, int work_to_do);
static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int *work_done, int work_to_do);
static void e1000_alloc_dummy_rx_buffers(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int cleaned_count)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sabrina dubroca | sabrina dubroca | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int cleaned_count);
static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int cleaned_count);
static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
int cmd);
static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
static void e1000_tx_timeout(struct net_device *dev);
static void e1000_reset_task(struct work_struct *work);
static void e1000_smartspeed(struct e1000_adapter *adapter);
static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
struct sk_buff *skb);
static bool e1000_vlan_used(struct e1000_adapter *adapter);
static void e1000_vlan_mode(struct net_device *netdev,
netdev_features_t features);
static void e1000_vlan_filter_on_off(struct e1000_adapter *adapter,
bool filter_on);
static int e1000_vlan_rx_add_vid(struct net_device *netdev,
__be16 proto, u16 vid);
static int e1000_vlan_rx_kill_vid(struct net_device *netdev,
__be16 proto, u16 vid);
static void e1000_restore_vlan(struct e1000_adapter *adapter);
#ifdef CONFIG_PM
static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
static int e1000_resume(struct pci_dev *pdev);
#endif
static void e1000_shutdown(struct pci_dev *pdev);
#ifdef CONFIG_NET_POLL_CONTROLLER
/* for netdump / net console */
static void e1000_netpoll (struct net_device *netdev);
#endif
#define COPYBREAK_DEFAULT 256
static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
module_param(copybreak, uint, 0644);
MODULE_PARM_DESC(copybreak,
"Maximum size of packet that is copied to a new buffer on receive");
static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
pci_channel_state_t state);
static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
static void e1000_io_resume(struct pci_dev *pdev);
static const struct pci_error_handlers e1000_err_handler = {
.error_detected = e1000_io_error_detected,
.slot_reset = e1000_io_slot_reset,
.resume = e1000_io_resume,
};
static struct pci_driver e1000_driver = {
.name = e1000_driver_name,
.id_table = e1000_pci_tbl,
.probe = e1000_probe,
.remove = e1000_remove,
#ifdef CONFIG_PM
/* Power Management Hooks */
.suspend = e1000_suspend,
.resume = e1000_resume,
#endif
.shutdown = e1000_shutdown,
.err_handler = &e1000_err_handler
};
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
/**
* e1000_get_hw_dev - return device
* used by hardware layer to print debugging information
*
**/
struct net_device *e1000_get_hw_dev(struct e1000_hw *hw)
{
struct e1000_adapter *adapter = hw->back;
return adapter->netdev;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| emil tantilov | emil tantilov | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
/**
* e1000_init_module - Driver Registration Routine
*
* e1000_init_module is the first routine called when the driver is
* loaded. All it does is register with the PCI subsystem.
**/
static int __init e1000_init_module(void)
{
int ret;
pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version);
pr_info("%s\n", e1000_copyright);
ret = pci_register_driver(&e1000_driver);
if (copybreak != COPYBREAK_DEFAULT) {
if (copybreak == 0)
pr_info("copybreak disabled\n");
else
pr_info("copybreak enabled for "
"packets <= %u bytes\n", copybreak);
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 29 | 43.28% | 2 | 40.00% |
| jesse brandeburg | jesse brandeburg | 24 | 35.82% | 1 | 20.00% |
| scott feldman | scott feldman | 8 | 11.94% | 1 | 20.00% |
| emil tantilov | emil tantilov | 6 | 8.96% | 1 | 20.00% |
| Total | 67 | 100.00% | 5 | 100.00% |
module_init(e1000_init_module);
/**
* e1000_exit_module - Driver Exit Cleanup Routine
*
* e1000_exit_module is called just before the driver is removed
* from memory.
**/
static void __exit e1000_exit_module(void)
{
pci_unregister_driver(&e1000_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_exit(e1000_exit_module);
static int e1000_request_irq(struct e1000_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
irq_handler_t handler = e1000_intr;
int irq_flags = IRQF_SHARED;
int err;
err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
netdev);
if (err) {
e_err(probe, "Unable to allocate interrupt Error: %d\n", err);
}
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 43 | 59.72% | 2 | 33.33% |
| jesse brandeburg | jesse brandeburg | 23 | 31.94% | 1 | 16.67% |
| emil tantilov | emil tantilov | 3 | 4.17% | 2 | 33.33% |
| al viro | al viro | 3 | 4.17% | 1 | 16.67% |
| Total | 72 | 100.00% | 6 | 100.00% |
static void e1000_free_irq(struct e1000_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
free_irq(adapter->pdev->irq, netdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
/**
* e1000_irq_disable - Mask off interrupt generation on the NIC
* @adapter: board private structure
**/
static void e1000_irq_disable(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
ew32(IMC, ~0);
E1000_WRITE_FLUSH();
synchronize_irq(adapter->pdev->irq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ganesh venkatesan | ganesh venkatesan | 32 | 78.05% | 1 | 50.00% |
| joe perches | joe perches | 9 | 21.95% | 1 | 50.00% |
| Total | 41 | 100.00% | 2 | 100.00% |
/**
* e1000_irq_enable - Enable default interrupt generation settings
* @adapter: board private structure
**/
static void e1000_irq_enable(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
ew32(IMS, IMS_ENABLE_MASK);
E1000_WRITE_FLUSH();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ganesh venkatesan | ganesh venkatesan | 22 | 70.97% | 1 | 50.00% |
| joe perches | joe perches | 9 | 29.03% | 1 | 50.00% |
| Total | 31 | 100.00% | 2 | 100.00% |
static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
u16 vid = hw->mng_cookie.vlan_id;
u16 old_vid = adapter->mng_vlan_id;
if (!e1000_vlan_used(adapter))
return;
if (!test_bit(vid, adapter->active_vlans)) {
if (hw->mng_cookie.status &
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid);
adapter->mng_vlan_id = vid;
} else {
adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
}
if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
(vid != old_vid) &&
!test_bit(old_vid, adapter->active_vlans))
e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
old_vid);
} else {
adapter->mng_vlan_id = vid;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 103 | 66.03% | 1 | 12.50% |
| jiri pirko | jiri pirko | 16 | 10.26% | 1 | 12.50% |
| joe perches | joe perches | 15 | 9.62% | 2 | 25.00% |
| patrick mchardy | patrick mchardy | 10 | 6.41% | 1 | 12.50% |
| jeff kirsher | jeff kirsher | 7 | 4.49% | 1 | 12.50% |
| dan aloni | dan aloni | 4 | 2.56% | 1 | 12.50% |
| adrian bunk | adrian bunk | 1 | 0.64% | 1 | 12.50% |
| Total | 156 | 100.00% | 8 | 100.00% |
static void e1000_init_manageability(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
if (adapter->en_mng_pt) {
u32 manc = er32(MANC);
/* disable hardware interception of ARP */
manc &= ~(E1000_MANC_ARP_EN);
ew32(MANC, manc);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 17 | 32.69% | 1 | 25.00% |
| jeff kirsher | jeff kirsher | 17 | 32.69% | 1 | 25.00% |
| joe perches | joe perches | 13 | 25.00% | 1 | 25.00% |
| auke kok | auke kok | 5 | 9.62% | 1 | 25.00% |
| Total | 52 | 100.00% | 4 | 100.00% |
static void e1000_release_manageability(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
if (adapter->en_mng_pt) {
u32 manc = er32(MANC);
/* re-enable hardware interception of ARP */
manc |= E1000_MANC_ARP_EN;
ew32(MANC, manc);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 15 | 30.61% | 1 | 25.00% |
| jeff kirsher | jeff kirsher | 14 | 28.57% | 1 | 25.00% |
| joe perches | joe perches | 13 | 26.53% | 1 | 25.00% |
| auke kok | auke kok | 7 | 14.29% | 1 | 25.00% |
| Total | 49 | 100.00% | 4 | 100.00% |
/**
* e1000_configure - configure the hardware for RX and TX
* @adapter = private board structure
**/
static void e1000_configure(struct e1000_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
int i;
e1000_set_rx_mode(netdev);
e1000_restore_vlan(adapter);
e1000_init_manageability(adapter);
e1000_configure_tx(adapter);
e1000_setup_rctl(adapter);
e1000_configure_rx(adapter);
/* call E1000_DESC_UNUSED which always leaves
* at least 1 descriptor unused to make sure
* next_to_use != next_to_clean
*/
for (i = 0; i < adapter->num_rx_queues; i++) {
struct e1000_rx_ring *ring = &adapter->rx_ring[i];
adapter->alloc_rx_buf(adapter, ring,
E1000_DESC_UNUSED(ring));
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff kirsher | jeff kirsher | 22 | 22.45% | 3 | 33.33% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 21 | 21.43% | 1 | 11.11% |
| jesse brandeburg | jesse brandeburg | 20 | 20.41% | 1 | 11.11% |
| jeff garzik | jeff garzik | 14 | 14.29% | 1 | 11.11% |
| jeb cramer | jeb cramer | 14 | 14.29% | 1 | 11.11% |
| joe perches | joe perches | 6 | 6.12% | 1 | 11.11% |
| auke kok | auke kok | 1 | 1.02% | 1 | 11.11% |
| Total | 98 | 100.00% | 9 | 100.00% |
int e1000_up(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
/* hardware has been reset, we need to reload some things */
e1000_configure(adapter);
clear_bit(__E1000_DOWN, &adapter->flags);
napi_enable(&adapter->napi);
e1000_irq_enable(adapter);
netif_wake_queue(adapter->netdev);
/* fire a link change interrupt to start the watchdog */
ew32(ICS, E1000_ICS_LSC);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 31 | 46.27% | 2 | 22.22% |
| joe perches | joe perches | 11 | 16.42% | 1 | 11.11% |
| jesse brandeburg | jesse brandeburg | 10 | 14.93% | 2 | 22.22% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 8 | 11.94% | 2 | 22.22% |
| jeff garzik | jeff garzik | 4 | 5.97% | 1 | 11.11% |
| stephen hemminger | stephen hemminger | 3 | 4.48% | 1 | 11.11% |
| Total | 67 | 100.00% | 9 | 100.00% |
/**
* e1000_power_up_phy - restore link in case the phy was powered down
* @adapter: address of board private structure
*
* The phy may be powered down to save power and turn off link when the
* driver is unloaded and wake on lan is not enabled (among others)
* *** this routine MUST be followed by a call to e1000_reset ***
**/
void e1000_power_up_phy(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u16 mii_reg = 0;
/* Just clear the power down bit to wake the phy back up */
if (hw->media_type == e1000_media_type_copper) {
/* according to the manual, the phy will retain its
* settings across a power-down/up cycle
*/
e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
mii_reg &= ~MII_CR_POWER_DOWN;
e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 28 | 45.90% | 1 | 12.50% |
| jeff garzik | jeff garzik | 13 | 21.31% | 1 | 12.50% |
| joe perches | joe perches | 12 | 19.67% | 2 | 25.00% |
| jeff kirsher | jeff kirsher | 4 | 6.56% | 2 | 25.00% |
| jeb cramer | jeb cramer | 2 | 3.28% | 1 | 12.50% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 2 | 3.28% | 1 | 12.50% |
| Total | 61 | 100.00% | 8 | 100.00% |
static void e1000_power_down_phy(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
/* Power down the PHY so no link is implied when interface is down *
* The PHY cannot be powered down if any of the following is true *
* (a) WoL is enabled
* (b) AMT is active
* (c) SoL/IDER session is active
*/
if (!adapter->wol && hw->mac_type >= e1000_82540 &&
hw->media_type == e1000_media_type_copper) {
u16 mii_reg = 0;
switch (hw->mac_type) {
case e1000_82540:
case e1000_82545:
case e1000_82545_rev_3:
case e1000_82546:
case e1000_ce4100:
case e1000_82546_rev_3:
case e1000_82541:
case e1000_82541_rev_2:
case e1000_82547:
case e1000_82547_rev_2:
if (er32(MANC) & E1000_MANC_SMBUS_EN)
goto out;
break;
default:
goto out;
}
e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
mii_reg |= MII_CR_POWER_DOWN;
e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
msleep(1);
}
out:
return;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| bruce allan | bruce allan | 56 | 41.79% | 1 | 6.67% |
| ganesh venkatesan | ganesh venkatesan | 28 | 20.90% | 1 | 6.67% |
| joe perches | joe perches | 15 | 11.19% | 2 | 13.33% |
| auke kok | auke kok | 10 | 7.46% | 2 | 13.33% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 10 | 7.46% | 3 | 20.00% |
| jeff garzik | jeff garzik | 6 | 4.48% | 1 | 6.67% |
| jeff kirsher | jeff kirsher | 4 | 2.99% | 2 | 13.33% |
| dirk brandewie | dirk brandewie | 3 | 2.24% | 1 | 6.67% |
| christopher goldfarb | christopher goldfarb | 1 | 0.75% | 1 | 6.67% |
| jesse brandeburg | jesse brandeburg | 1 | 0.75% | 1 | 6.67% |
| Total | 134 | 100.00% | 15 | 100.00% |
static void e1000_down_and_stop(struct e1000_adapter *adapter)
{
set_bit(__E1000_DOWN, &adapter->flags);
cancel_delayed_work_sync(&adapter->watchdog_task);
/*
* Since the watchdog task can reschedule other tasks, we should cancel
* it first, otherwise we can run into the situation when a work is
* still running after the adapter has been turned down.
*/
cancel_delayed_work_sync(&adapter->phy_info_task);
cancel_delayed_work_sync(&adapter->fifo_stall_task);
/* Only kill reset task if adapter is not resetting */
if (!test_bit(__E1000_RESETTING, &adapter->flags))
cancel_work_sync(&adapter->reset_task);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 45 | 66.18% | 1 | 33.33% |
| vladimir davydov | vladimir davydov | 18 | 26.47% | 1 | 33.33% |
| tushar dave | tushar dave | 5 | 7.35% | 1 | 33.33% |
| Total | 68 | 100.00% | 3 | 100.00% |
void e1000_down(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
u32 rctl, tctl;
netif_carrier_off(netdev);
/* disable receives in the hardware */
rctl = er32(RCTL);
ew32(RCTL, rctl & ~E1000_RCTL_EN);
/* flush and sleep below */
netif_tx_disable(netdev);
/* disable transmits in the hardware */
tctl = er32(TCTL);
tctl &= ~E1000_TCTL_EN;
ew32(TCTL, tctl);
/* flush both disables and wait for them to finish */
E1000_WRITE_FLUSH();
msleep(10);
napi_disable(&adapter->napi);
e1000_irq_disable(adapter);
/* Setting DOWN must be after irq_disable to prevent
* a screaming interrupt. Setting DOWN also prevents
* tasks from rescheduling.
*/
e1000_down_and_stop(adapter);
adapter->link_speed = 0;
adapter->link_duplex = 0;
e1000_reset(adapter);
e1000_clean_all_tx_rings(adapter);
e1000_clean_all_rx_rings(adapter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 69 | 50.00% | 3 | 21.43% |
| auke kok | auke kok | 20 | 14.49% | 2 | 14.29% |
| jeff garzik | jeff garzik | 15 | 10.87% | 1 | 7.14% |
| christopher goldfarb | christopher goldfarb | 14 | 10.14% | 2 | 14.29% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 8 | 5.80% | 2 | 14.29% |
| stephen hemminger | stephen hemminger | 5 | 3.62% | 1 | 7.14% |
| eliezer tamir | eliezer tamir | 5 | 3.62% | 1 | 7.14% |
| jeff kirsher | jeff kirsher | 1 | 0.72% | 1 | 7.14% |
| joe perches | joe perches | 1 | 0.72% | 1 | 7.14% |
| Total | 138 | 100.00% | 14 | 100.00% |
void e1000_reinit_locked(struct e1000_adapter *adapter)
{
WARN_ON(in_interrupt());
while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
msleep(1);
e1000_down(adapter);
e1000_up(adapter);
clear_bit(__E1000_RESETTING, &adapter->flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 32 | 60.38% | 1 | 20.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 10 | 18.87% | 2 | 40.00% |
| ganesh venkatesan | ganesh venkatesan | 10 | 18.87% | 1 | 20.00% |
| joe perches | joe perches | 1 | 1.89% | 1 | 20.00% |
| Total | 53 | 100.00% | 5 | 100.00% |
void e1000_reset(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 pba = 0, tx_space, min_tx_space, min_rx_space;
bool legacy_pba_adjust = false;
u16 hwm;
/* Repartition Pba for greater than 9k mtu
* To take effect CTRL.RST is required.
*/
switch (hw->mac_type) {
case e1000_82542_rev2_0:
case e1000_82542_rev2_1:
case e1000_82543:
case e1000_82544:
case e1000_82540:
case e1000_82541:
case e1000_82541_rev_2:
legacy_pba_adjust = true;
pba = E1000_PBA_48K;
break;
case e1000_82545:
case e1000_82545_rev_3:
case e1000_82546:
case e1000_ce4100:
case e1000_82546_rev_3:
pba = E1000_PBA_48K;
break;
case e1000_82547:
case e1000_82547_rev_2:
legacy_pba_adjust = true;
pba = E1000_PBA_30K;
break;
case e1000_undefined:
case e1000_num_macs:
break;
}
if (legacy_pba_adjust) {
if (hw->max_frame_size > E1000_RXBUFFER_8192)
pba -= 8; /* allocate more FIFO for Tx */
if (hw->mac_type == e1000_82547) {
adapter->tx_fifo_head = 0;
adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
adapter->tx_fifo_size =
(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
atomic_set(&adapter->tx_fifo_stall, 0);
}
} else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
/* adjust PBA for jumbo frames */
ew32(PBA, pba);
/* To maintain wire speed transmits, the Tx FIFO should be
* large enough to accommodate two full transmit packets,
* rounded up to the next 1KB and expressed in KB. Likewise,
* the Rx FIFO should be large enough to accommodate at least
* one full receive packet and is similarly rounded up and
* expressed in KB.
*/
pba = er32(PBA);
/* upper 16 bits has Tx packet buffer allocation size in KB */
tx_space = pba >> 16;
/* lower 16 bits has Rx packet buffer allocation size in KB */
pba &= 0xffff;
/* the Tx fifo also stores 16 bytes of information about the Tx
* but don't include ethernet FCS because hardware appends it
*/
min_tx_space = (hw->max_frame_size +
sizeof(struct e1000_tx_desc) -
ETH_FCS_LEN) * 2;
min_tx_space = ALIGN(min_tx_space, 1024);
min_tx_space >>= 10;
/* software strips receive CRC, so leave room for it */
min_rx_space = hw->max_frame_size;
min_rx_space = ALIGN(min_rx_space, 1024);
min_rx_space >>= 10;
/* If current Tx allocation is less than the min Tx FIFO size,
* and the min Tx FIFO size is less than the current Rx FIFO
* allocation, take space away from current Rx allocation
*/
if (tx_space < min_tx_space &&
((min_tx_space - tx_space) < pba)) {
pba = pba - (min_tx_space - tx_space);
/* PCI/PCIx hardware has PBA alignment constraints */
switch (hw->mac_type) {
case e1000_82545 ... e1000_82546_rev_3:
pba &= ~(E1000_PBA_8K - 1);
break;
default:
break;
}
/* if short on Rx space, Rx wins and must trump Tx
* adjustment or use Early Receive if available
*/
if (pba < min_rx_space)
pba = min_rx_space;
}
}
ew32(PBA, pba);
/* flow control settings:
* The high water mark must be low enough to fit one full frame
* (or the size used for early receive) above it in the Rx FIFO.
* Set it to the lower of:
* - 90% of the Rx FIFO size, and
* - the full Rx FIFO size minus the early receive size (for parts
* with ERT support assuming ERT set to E1000_ERT_2048), or
* - the full Rx FIFO size minus one full frame
*/
hwm = min(((pba << 10) * 9 / 10),
((pba << 10) - hw->max_frame_size));
hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */
hw->fc_low_water = hw->fc_high_water - 8;
hw->fc_pause_time = E1000_FC_PAUSE_TIME;
hw->fc_send_xon = 1;
hw->fc = hw->original_fc;
/* Allow time for pending master requests to run */
e1000_reset_hw(hw);
if (hw->mac_type >= e1000_82544)
ew32(WUC, 0);
if (e1000_init_hw(hw))
e_dev_err("Hardware Error\n");
e1000_update_mng_vlan(adapter);
/* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
if (hw->mac_type >= e1000_82544 &&
hw->autoneg == 1 &&
hw->autoneg_advertised == ADVERTISE_1000_FULL) {
u32 ctrl = er32(CTRL);
/* clear phy power management bit if we are in gig only mode,
* which if enabled will attempt negotiation to 100Mb, which
* can cause a loss of link at power off or driver unload
*/
ctrl &= ~E1000_CTRL_SWDPIN3;
ew32(CTRL, ctrl);
}
/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
ew32(VET, ETHERNET_IEEE_VLAN_TYPE);
e1000_reset_adaptive(hw);
e1000_phy_get_info(hw, &adapter->phy_info);
e1000_release_manageability(adapter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| bruce allan | bruce allan | 193 | 36.42% | 1 | 3.70% |
| jesse brandeburg | jesse brandeburg | 88 | 16.60% | 2 | 7.41% |
| jeb cramer | jeb cramer | 43 | 8.11% | 1 | 3.70% |
| scott feldman | scott feldman | 40 | 7.55% | 4 | 14.81% |
| joe perches | joe perches | 38 | 7.17% | 4 | 14.81% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 37 | 6.98% | 3 | 11.11% |
| jeff garzik | jeff garzik | 34 | 6.42% | 2 | 7.41% |
| christopher goldfarb | christopher goldfarb | 20 | 3.77% | 2 | 7.41% |
| jeff kirsher | jeff kirsher | 16 | 3.02% | 3 | 11.11% |
| milind arun choudhary | milind arun choudhary | 6 | 1.13% | 1 | 3.70% |
| ganesh venkatesan | ganesh venkatesan | 6 | 1.13% | 1 | 3.70% |
| auke kok | auke kok | 5 | 0.94% | 1 | 3.70% |
| dirk brandewie | dirk brandewie | 3 | 0.57% | 1 | 3.70% |
| emil tantilov | emil tantilov | 1 | 0.19% | 1 | 3.70% |
| Total | 530 | 100.00% | 27 | 100.00% |
/* Dump the eeprom for users having checksum issues */
static void e1000_dump_eeprom(struct e1000_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct ethtool_eeprom eeprom;
const struct ethtool_ops *ops = netdev->ethtool_ops;
u8 *data;
int i;
u16 csum_old, csum_new = 0;
eeprom.len = ops->get_eeprom_len(netdev);
eeprom.offset = 0;
data = kmalloc(eeprom.len, GFP_KERNEL);
if (!data)
return;
ops->get_eeprom(netdev, &eeprom, data);
csum_old = (data[EEPROM_CHECKSUM_REG * 2]) +
(data[EEPROM_CHECKSUM_REG * 2 + 1] << 8);
for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2)
csum_new += data[i] + (data[i + 1] << 8);
csum_new = EEPROM_SUM - csum_new;
pr_err("/*********************/\n");
pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old);
pr_err("Calculated : 0x%04x\n", csum_new);
pr_err("Offset Values\n");
pr_err("======== ======\n");
print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
pr_err("Include this output when contacting your support provider.\n");
pr_err("This is not a software error! Something bad happened to\n");
pr_err("your hardware or EEPROM image. Ignoring this problem could\n");
pr_err("result in further problems, possibly loss of data,\n");
pr_err("corruption or system hangs!\n");
pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n");
pr_err("which is invalid and requires you to set the proper MAC\n");
pr_err("address manually before continuing to enable this network\n");
pr_err("device. Please inspect the EEPROM dump and report the\n");
pr_err("issue to your hardware vendor or Intel Customer Support.\n");
pr_err("/*********************/\n");
kfree(data);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 236 | 88.72% | 1 | 33.33% |
| emil tantilov | emil tantilov | 29 | 10.90% | 1 | 33.33% |
| adrian bunk | adrian bunk | 1 | 0.38% | 1 | 33.33% |
| Total | 266 | 100.00% | 3 | 100.00% |
/**
* e1000_is_need_ioport - determine if an adapter needs ioport resources or not
* @pdev: PCI device information struct
*
* Return true if an adapter needs ioport resources
**/
static int e1000_is_need_ioport(struct pci_dev *pdev)
{
switch (pdev->device) {
case E1000_DEV_ID_82540EM:
case E1000_DEV_ID_82540EM_LOM:
case E1000_DEV_ID_82540EP:
case E1000_DEV_ID_82540EP_LOM:
case E1000_DEV_ID_82540EP_LP:
case E1000_DEV_ID_82541EI:
case E1000_DEV_ID_82541EI_MOBILE:
case E1000_DEV_ID_82541ER:
case E1000_DEV_ID_82541ER_LOM:
case E1000_DEV_ID_82541GI:
case E1000_DEV_ID_82541GI_LF:
case E1000_DEV_ID_82541GI_MOBILE:
case E1000_DEV_ID_82544EI_COPPER:
case E1000_DEV_ID_82544EI_FIBER:
case E1000_DEV_ID_82544GC_COPPER:
case E1000_DEV_ID_82544GC_LOM:
case E1000_DEV_ID_82545EM_COPPER:
case E1000_DEV_ID_82545EM_FIBER:
case E1000_DEV_ID_82546EB_COPPER:
case E1000_DEV_ID_82546EB_FIBER:
case E1000_DEV_ID_82546EB_QUAD_COPPER:
return true;
default:
return false;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| taku izumi | taku izumi | 89 | 100.00% | 1 | 100.00% |
| Total | 89 | 100.00% | 1 | 100.00% |
static netdev_features_t e1000_fix_features(struct net_device *netdev,
netdev_features_t features)
{
/* Since there is no support for separate Rx/Tx vlan accel
* enable/disable make sure Tx flag is always in same state as Rx.
*/
if (features & NETIF_F_HW_VLAN_CTAG_RX)
features |= NETIF_F_HW_VLAN_CTAG_TX;
else
features &= ~NETIF_F_HW_VLAN_CTAG_TX;
return features;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jiri pirko | jiri pirko | 28 | 82.35% | 1 | 25.00% |
| patrick mchardy | patrick mchardy | 3 | 8.82% | 1 | 25.00% |
| michal miroslaw | michal miroslaw | 2 | 5.88% | 1 | 25.00% |
| jeff kirsher | jeff kirsher | 1 | 2.94% | 1 | 25.00% |
| Total | 34 | 100.00% | 4 | 100.00% |
static int e1000_set_features(struct net_device *netdev,
netdev_features_t features)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
netdev_features_t changed = features ^ netdev->features;
if (changed & NETIF_F_HW_VLAN_CTAG_RX)
e1000_vlan_mode(netdev, features);
if (!(changed & (NETIF_F_RXCSUM | NETIF_F_RXALL)))
return 0;
netdev->features = features;
adapter->rx_csum = !!(features & NETIF_F_RXCSUM);
if (netif_running(netdev))
e1000_reinit_locked(adapter);
else
e1000_reset(adapter);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michal miroslaw | michal miroslaw | 78 | 77.23% | 2 | 40.00% |
| jiri pirko | jiri pirko | 12 | 11.88% | 1 | 20.00% |
| ben greear | ben greear | 10 | 9.90% | 1 | 20.00% |
| patrick mchardy | patrick mchardy | 1 | 0.99% | 1 | 20.00% |
| Total | 101 | 100.00% | 5 | 100.00% |
static const struct net_device_ops e1000_netdev_ops = {
.ndo_open = e1000_open,
.ndo_stop = e1000_close,
.ndo_start_xmit = e1000_xmit_frame,
.ndo_get_stats = e1000_get_stats,
.ndo_set_rx_mode = e1000_set_rx_mode,
.ndo_set_mac_address = e1000_set_mac,
.ndo_tx_timeout = e1000_tx_timeout,
.ndo_change_mtu = e1000_change_mtu,
.ndo_do_ioctl = e1000_ioctl,
.ndo_validate_addr = eth_validate_addr,
.ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = e1000_netpoll,
#endif
.ndo_fix_features = e1000_fix_features,
.ndo_set_features = e1000_set_features,
};
/**
* e1000_init_hw_struct - initialize members of hw struct
* @adapter: board private struct
* @hw: structure used by e1000_hw.c
*
* Factors out initialization of the e1000_hw struct to its own function
* that can be called very early at init (just after struct allocation).
* Fields are initialized based on PCI device information and
* OS network device settings (MTU size).
* Returns negative error codes if MAC type setup fails.
*/
static int e1000_init_hw_struct(struct e1000_adapter *adapter,
struct e1000_hw *hw)
{
struct pci_dev *pdev = adapter->pdev;
/* PCI config space info */
hw->vendor_id = pdev->vendor;
hw->device_id = pdev->device;
hw->subsystem_vendor_id = pdev->subsystem_vendor;
hw->subsystem_id = pdev->subsystem_device;
hw->revision_id = pdev->revision;
pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
hw->max_frame_size = adapter->netdev->mtu +
ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
/* identify the MAC */
if (e1000_set_mac_type(hw)) {
e_err(probe, "Unknown MAC Type\n");
return -EIO;
}
switch (hw->mac_type) {
default:
break;
case e1000_82541:
case e1000_82547:
case e1000_82541_rev_2:
case e1000_82547_rev_2:
hw->phy_init_script = 1;
break;
}
e1000_set_media_type(hw);
e1000_get_bus_info(hw);
hw->wait_autoneg_complete = false;
hw->tbi_compatibility_en = true;
hw->adaptive_ifs = true;
/* Copper options */
if (hw->media_type == e1000_media_type_copper) {
hw->mdix = AUTO_ALL_MODES;
hw->disable_polarity_correction = false;
hw->master_slave = E1000_MASTER_SLAVE;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 208 | 100.00% | 1 | 100.00% |
| Total | 208 | 100.00% | 1 | 100.00% |
/**
* e1000_probe - Device Initialization Routine
* @pdev: PCI device information struct
* @ent: entry in e1000_pci_tbl
*
* Returns 0 on success, negative on failure
*
* e1000_probe initializes an adapter identified by a pci_dev structure.
* The OS initialization, configuring of the adapter private structure,
* and a hardware reset occur.
**/
static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct net_device *netdev;
struct e1000_adapter *adapter;
struct e1000_hw *hw;
static int cards_found;
static int global_quad_port_a; /* global ksp3 port a indication */
int i, err, pci_using_dac;
u16 eeprom_data = 0;
u16 tmp = 0;
u16 eeprom_apme_mask = E1000_EEPROM_APME;
int bars, need_ioport;
/* do not allocate ioport bars when not needed */
need_ioport = e1000_is_need_ioport(pdev);
if (need_ioport) {
bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
err = pci_enable_device(pdev);
} else {
bars = pci_select_bars(pdev, IORESOURCE_MEM);
err = pci_enable_device_mem(pdev);
}
if (err)
return err;
err = pci_request_selected_regions(pdev, bars, e1000_driver_name);
if (err)
goto err_pci_reg;
pci_set_master(pdev);
err = pci_save_state(pdev);
if (err)
goto err_alloc_etherdev;
err = -ENOMEM;
netdev = alloc_etherdev(sizeof(struct e1000_adapter));
if (!netdev)
goto err_alloc_etherdev;
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);
adapter = netdev_priv(netdev);
adapter->netdev = netdev;
adapter->pdev = pdev;
adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
adapter->bars = bars;
adapter->need_ioport = need_ioport;
hw = &adapter->hw;
hw->back = adapter;
err = -EIO;
hw->hw_addr = pci_ioremap_bar(pdev, BAR_0);
if (!hw->hw_addr)
goto err_ioremap;
if (adapter->need_ioport) {
for (i = BAR_1; i <= BAR_5; i++) {
if (pci_resource_len(pdev, i) == 0)
continue;
if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
hw->io_base = pci_resource_start(pdev, i);
break;
}
}
}
/* make ready for any if (hw->...) below */
err = e1000_init_hw_struct(adapter, hw);
if (err)
goto err_sw_init;
/* there is a workaround being applied below that limits
* 64-bit DMA addresses to 64-bit hardware. There are some
* 32-bit adapters that Tx hang when given 64-bit DMA addresses
*/
pci_using_dac = 0;
if ((hw->bus_type == e1000_bus_type_pcix) &&
!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
pci_using_dac = 1;
} else {
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
pr_err("No usable DMA config, aborting\n");
goto err_dma;
}
}
netdev->netdev_ops = &e1000_netdev_ops;
e1000_set_ethtool_ops(netdev);
netdev->watchdog_timeo = 5 * HZ;
netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
adapter->bd_number = cards_found;
/* setup the private structure */
err = e1000_sw_init(adapter);
if (err)
goto err_sw_init;
err = -EIO;
if (hw->mac_type == e1000_ce4100) {
hw->ce4100_gbe_mdio_base_virt =
ioremap(pci_resource_start(pdev, BAR_1),
pci_resource_len(pdev, BAR_1));
if (!hw->ce4100_gbe_mdio_base_virt)
goto err_mdio_ioremap;
}
if (hw->mac_type >= e1000_82543) {
netdev->hw_features = NETIF_F_SG |
NETIF_F_HW_CSUM |
NETIF_F_HW_VLAN_CTAG_RX;
netdev->features = NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_FILTER;
}
if ((hw->mac_type >= e1000_82544) &&
(hw->mac_type != e1000_82547))
netdev->hw_features |= NETIF_F_TSO;
netdev->priv_flags |= IFF_SUPP_NOFCS;
netdev->features |= netdev->hw_features;
netdev->hw_features |= (NETIF_F_RXCSUM |
NETIF_F_RXALL |
NETIF_F_RXFCS);
if (pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
netdev->vlan_features |= (NETIF_F_TSO |
NETIF_F_HW_CSUM |
NETIF_F_SG);
/* Do not set IFF_UNICAST_FLT for VMWare's 82545EM */
if (hw->device_id != E1000_DEV_ID_82545EM_COPPER ||
hw->subsystem_vendor_id != PCI_VENDOR_ID_VMWARE)
netdev->priv_flags |= IFF_UNICAST_FLT;
/* MTU range: 46 - 16110 */
netdev->min_mtu = ETH_ZLEN - ETH_HLEN;
netdev->max_mtu = MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN);
adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
/* initialize eeprom parameters */
if (e1000_init_eeprom_params(hw)) {
e_err(probe, "EEPROM initialization failed\n");
goto err_eeprom;
}
/* before reading the EEPROM, reset the controller to
* put the device in a known good starting state
*/
e1000_reset_hw(hw);
/* make sure the EEPROM is good */
if (e1000_validate_eeprom_checksum(hw) < 0) {
e_err(probe, "The EEPROM Checksum Is Not Valid\n");
e1000_dump_eeprom(adapter);
/* set MAC address to all zeroes to invalidate and temporary
* disable this device for the user. This blocks regular
* traffic while still permitting ethtool ioctls from reaching
* the hardware as well as allowing the user to run the
* interface after manually setting a hw addr using
* `ip set address`
*/
memset(hw->mac_addr, 0, netdev->addr_len);
} else {
/* copy the MAC address out of the EEPROM */
if (e1000_read_mac_addr(hw))
e_err(probe, "EEPROM Read Error\n");
}
/* don't block initialization here due to bad MAC address */
memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len);
if (!is_valid_ether_addr(netdev->dev_addr))
e_err(probe, "Invalid MAC Address\n");
INIT_DELAYED_WORK(&adapter->watchdog_task, e1000_watchdog);
INIT_DELAYED_WORK(&adapter->fifo_stall_task,
e1000_82547_tx_fifo_stall_task);
INIT_DELAYED_WORK(&adapter->phy_info_task, e1000_update_phy_info_task);
INIT_WORK(&adapter->reset_task, e1000_reset_task);
e1000_check_options(adapter);
/* Initial Wake on LAN setting
* If APM wake is enabled in the EEPROM,
* enable the ACPI Magic Packet filter
*/
switch (hw->mac_type) {
case e1000_82542_rev2_0:
case e1000_82542_rev2_1:
case e1000_82543:
break;
case e1000_82544:
e1000_read_eeprom(hw,
EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
eeprom_apme_mask = E1000_EEPROM_82544_APM;
break;
case e1000_82546:
case e1000_82546_rev_3:
if (er32(STATUS) & E1000_STATUS_FUNC_1) {
e1000_read_eeprom(hw,
EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
break;
}
/* Fall Through */
default:
e1000_read_eeprom(hw,
EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
break;
}
if (eeprom_data & eeprom_apme_mask)
adapter->eeprom_wol |= E1000_WUFC_MAG;
/* now that we have the eeprom settings, apply the special cases
* where the eeprom may be wrong or the board simply won't support
* wake on lan on a particular port
*/
switch (pdev->device) {
case E1000_DEV_ID_82546GB_PCIE:
adapter->eeprom_wol = 0;
break;
case E1000_DEV_ID_82546EB_FIBER:
case E1000_DEV_ID_82546GB_FIBER:
/* Wake events only supported on port A for dual fiber
* regardless of eeprom setting
*/
if (er32(STATUS) & E1000_STATUS_FUNC_1)
adapter->eeprom_wol = 0;
break;
case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
/* if quad port adapter, disable WoL on all but port A */
if (global_quad_port_a != 0)
adapter->eeprom_wol = 0;
else
adapter->quad_port_a = true;
/* Reset for multiple quad port adapters */
if (++global_quad_port_a == 4)
global_quad_port_a = 0;
break;
}
/* initialize the wol settings based on the eeprom settings */
adapter->wol = adapter->eeprom_wol;
device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
/* Auto detect PHY address */
if (hw->mac_type == e1000_ce4100) {
for (i = 0; i < 32; i++) {
hw->phy_addr = i;
e1000_read_phy_reg(hw, PHY_ID2, &tmp);
if (tmp != 0 && tmp != 0xFF)
break;
}
if (i >= 32)
goto err_eeprom;
}
/* reset the hardware with the new settings */
e1000_reset(adapter);
strcpy(netdev->name, "eth%d");
err = register_netdev(netdev);
if (err)
goto err_register;
e1000_vlan_filter_on_off(adapter, false);
/* print bus type/speed/width info */
e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n",
((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""),
((hw->bus_speed == e1000_bus_speed_133) ? 133 :
(hw->bus_speed == e1000_bus_speed_120) ? 120 :
(hw->bus_speed == e1000_bus_speed_100) ? 100 :
(hw->bus_speed == e1000_bus_speed_66) ? 66 : 33),
((hw->bus_width == e1000_bus_width_64) ? 64 : 32),
netdev->dev_addr);
/* carrier off reporting is important to ethtool even BEFORE open */
netif_carrier_off(netdev);
e_info(probe, "Intel(R) PRO/1000 Network Connection\n");
cards_found++;
return 0;
err_register:
err_eeprom:
e1000_phy_hw_reset(hw);
if (hw->flash_address)
iounmap(hw->flash_address);
kfree(adapter->tx_ring);
kfree(adapter->rx_ring);
err_dma:
err_sw_init:
err_mdio_ioremap:
iounmap(hw->ce4100_gbe_mdio_base_virt);
iounmap(hw->hw_addr);
err_ioremap:
free_netdev(netdev);
err_alloc_etherdev:
pci_release_selected_regions(pdev, bars);
err_pci_reg:
pci_disable_device(pdev);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 203 | 15.04% | 5 | 6.33% |
| jeff garzik | jeff garzik | 202 | 14.96% | 3 | 3.80% |
| scott feldman | scott feldman | 129 | 9.56% | 10 | 12.66% |
| dirk brandewie | dirk brandewie | 101 | 7.48% | 1 | 1.27% |
| jeff kirsher | jeff kirsher | 81 | 6.00% | 3 | 3.80% |
| taku izumi | taku izumi | 73 | 5.41% | 1 | 1.27% |
| joe perches | joe perches | 57 | 4.22% | 6 | 7.59% |
| auke kok | auke kok | 55 | 4.07% | 3 | 3.80% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 55 | 4.07% | 3 | 3.80% |
| vasily averin | vasily averin | 49 | 3.63% | 1 | 1.27% |
| emil tantilov | emil tantilov | 47 | 3.48% | 2 | 2.53% |
| ganesh venkatesan | ganesh venkatesan | 35 | 2.59% | 4 | 5.06% |
| stephen hemminger | stephen hemminger | 26 | 1.93% | 4 | 5.06% |
| jeb cramer | jeb cramer | 22 | 1.63% | 2 | 2.53% |
| jarod wilson | jarod wilson | 21 | 1.56% | 1 | 1.27% |
| michal miroslaw | michal miroslaw | 20 | 1.48% | 1 | 1.27% |
| dean nelson | dean nelson | 17 | 1.26% | 1 | 1.27% |
| jiri pirko | jiri pirko | 15 | 1.11% | 4 | 5.06% |
| francesco ruggeri | francesco ruggeri | 15 | 1.11% | 1 | 1.27% |
| rafael j. wysocki | rafael j. wysocki | 14 | 1.04% | 1 | 1.27% |
| nicholas nunley | nicholas nunley | 14 | 1.04% | 1 | 1.27% |
| alexey kuznetsov | alexey kuznetsov | 12 | 0.89% | 1 | 1.27% |
| christopher goldfarb | christopher goldfarb | 10 | 0.74% | 3 | 3.80% |
| chris leech | chris leech | 10 | 0.74% | 1 | 1.27% |
| florian fainelli | florian fainelli | 9 | 0.67% | 1 | 1.27% |
| patrick mchardy | patrick mchardy | 9 | 0.67% | 2 | 2.53% |
| ben greear | ben greear | 9 | 0.67% | 3 | 3.80% |
| yi zou | yi zou | 8 | 0.59% | 1 | 1.27% |
| tushar dave | tushar dave | 8 | 0.59% | 1 | 1.27% |
| jean sacren | jean sacren | 7 | 0.52% | 1 | 1.27% |
| jeb j. cramer | jeb j. cramer | 6 | 0.44% | 1 | 1.27% |
| benjamin herrenschmidt | benjamin herrenschmidt | 4 | 0.30% | 1 | 1.27% |
| david s. miller | david s. miller | 2 | 0.15% | 1 | 1.27% |
| russell king | russell king | 2 | 0.15% | 1 | 1.27% |
| rusty russell | rusty russell | 1 | 0.07% | 1 | 1.27% |
| karsten keil | karsten keil | 1 | 0.07% | 1 | 1.27% |
| arjan van de ven | arjan van de ven | 1 | 0.07% | 1 | 1.27% |
| Total | 1350 | 100.00% | 79 | 100.00% |
/**
* e1000_remove - Device Removal Routine
* @pdev: PCI device information struct
*
* e1000_remove is called by the PCI subsystem to alert the driver
* that it should release a PCI device. That could be caused by a
* Hot-Plug event, or because the driver is going to be removed from
* memory.
**/
static void e1000_remove(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
e1000_down_and_stop(adapter);
e1000_release_manageability(adapter);
unregister_netdev(netdev);
e1000_phy_hw_reset(hw);
kfree(adapter->tx_ring);
kfree(adapter->rx_ring);
if (hw->mac_type == e1000_ce4100)
iounmap(hw->ce4100_gbe_mdio_base_virt);
iounmap(hw->hw_addr);
if (hw->flash_address)
iounmap(hw->flash_address);
pci_release_selected_regions(pdev, adapter->bars);
free_netdev(netdev);
pci_disable_device(pdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 46 | 35.66% | 2 | 11.11% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 22 | 17.05% | 4 | 22.22% |
| florian fainelli | florian fainelli | 15 | 11.63% | 2 | 11.11% |
| joe perches | joe perches | 13 | 10.08% | 1 | 5.56% |
| auke kok | auke kok | 11 | 8.53% | 1 | 5.56% |
| stephen hemminger | stephen hemminger | 6 | 4.65% | 2 | 11.11% |
| andrew morton | andrew morton | 6 | 4.65% | 2 | 11.11% |
| taku izumi | taku izumi | 5 | 3.88% | 1 | 5.56% |
| jesse brandeburg | jesse brandeburg | 3 | 2.33% | 2 | 11.11% |
| christopher goldfarb | christopher goldfarb | 2 | 1.55% | 1 | 5.56% |
| Total | 129 | 100.00% | 18 | 100.00% |
/**
* e1000_sw_init - Initialize general software structures (struct e1000_adapter)
* @adapter: board private structure to initialize
*
* e1000_sw_init initializes the Adapter private data structure.
* e1000_init_hw_struct MUST be called before this function
**/
static int e1000_sw_init(struct e1000_adapter *adapter)
{
adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
adapter->num_tx_queues = 1;
adapter->num_rx_queues = 1;
if (e1000_alloc_queues(adapter)) {
e_err(probe, "Unable to allocate memory for queues\n");
return -ENOMEM;
}
/* Explicitly disable IRQ since the NIC can be in any state. */
e1000_irq_disable(adapter);
spin_lock_init(&adapter->stats_lock);
set_bit(__E1000_DOWN, &adapter->flags);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 23 | 30.26% | 1 | 10.00% |
| jeff garzik | jeff garzik | 22 | 28.95% | 1 | 10.00% |
| auke kok | auke kok | 11 | 14.47% | 2 | 20.00% |
| jeff kirsher | jeff kirsher | 7 | 9.21% | 1 | 10.00% |
| herbert xu | herbert xu | 4 | 5.26% | 1 | 10.00% |
| david s. miller | david s. miller | 3 | 3.95% | 1 | 10.00% |
| emil tantilov | emil tantilov | 3 | 3.95% | 2 | 20.00% |
| jeb j. cramer | jeb j. cramer | 3 | 3.95% | 1 | 10.00% |
| Total | 76 | 100.00% | 10 | 100.00% |
/**
* e1000_alloc_queues - Allocate memory for all rings
* @adapter: board private structure to initialize
*
* We allocate one ring per queue at run-time since we don't know the
* number of queues at compile-time.
**/
static int e1000_alloc_queues(struct e1000_adapter *adapter)
{
adapter->tx_ring = kcalloc(adapter->num_tx_queues,
sizeof(struct e1000_tx_ring), GFP_KERNEL);
if (!adapter->tx_ring)
return -ENOMEM;
adapter->rx_ring = kcalloc(adapter->num_rx_queues,
sizeof(struct e1000_rx_ring), GFP_KERNEL);
if (!adapter->rx_ring) {
kfree(adapter->tx_ring);
return -ENOMEM;
}
return E1000_SUCCESS;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 67 | 80.72% | 1 | 33.33% |
| yan burman | yan burman | 15 | 18.07% | 1 | 33.33% |
| jeff kirsher | jeff kirsher | 1 | 1.20% | 1 | 33.33% |
| Total | 83 | 100.00% | 3 | 100.00% |
/**
* e1000_open - Called when a network interface is made active
* @netdev: network interface device structure
*
* Returns 0 on success, negative value on failure
*
* The open entry point is called when a network interface is made
* active by the system (IFF_UP). At this point all resources needed
* for transmit and receive operations are allocated, the interrupt
* handler is registered with the OS, the watchdog task is started,
* and the stack is notified that the interface is ready.
**/
int e1000_open(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
int err;
/* disallow open during test */
if (test_bit(__E1000_TESTING, &adapter->flags))
return -EBUSY;
netif_carrier_off(netdev);
/* allocate transmit descriptors */
err = e1000_setup_all_tx_resources(adapter);
if (err)
goto err_setup_tx;
/* allocate receive descriptors */
err = e1000_setup_all_rx_resources(adapter);
if (err)
goto err_setup_rx;
e1000_power_up_phy(adapter);
adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
if ((hw->mng_cookie.status &
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
e1000_update_mng_vlan(adapter);
}
/* before we allocate an interrupt, we must be ready to handle it.
* Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
* as soon as we call pci_request_irq, so we have to setup our
* clean_rx handler before we do so.
*/
e1000_configure(adapter);
err = e1000_request_irq(adapter);
if (err)
goto err_req_irq;
/* From here on the code is the same as e1000_up() */
clear_bit(__E1000_DOWN, &adapter->flags);
napi_enable(&adapter->napi);
e1000_irq_enable(adapter);
netif_start_queue(netdev);
/* fire a link status change interrupt to start the watchdog */
ew32(ICS, E1000_ICS_LSC);
return E1000_SUCCESS;
err_req_irq:
e1000_power_down_phy(adapter);
e1000_free_all_rx_resources(adapter);
err_setup_rx:
e1000_free_all_tx_resources(adapter);
err_setup_tx:
e1000_reset(adapter);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 71 | 34.80% | 4 | 21.05% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 53 | 25.98% | 3 | 15.79% |
| jeff garzik | jeff garzik | 24 | 11.76% | 1 | 5.26% |
| linus torvalds | linus torvalds | 12 | 5.88% | 1 | 5.26% |
| joe perches | joe perches | 12 | 5.88% | 1 | 5.26% |
| jeff kirsher | jeff kirsher | 8 | 3.92% | 2 | 10.53% |
| ben hutchings | ben hutchings | 5 | 2.45% | 1 | 5.26% |
| jesse brandeburg | jesse brandeburg | 5 | 2.45% | 1 | 5.26% |
| stephen hemminger | stephen hemminger | 5 | 2.45% | 1 | 5.26% |
| vasily averin | vasily averin | 4 | 1.96% | 1 | 5.26% |
| herbert xu | herbert xu | 3 | 1.47% | 1 | 5.26% |
| scott feldman | scott feldman | 1 | 0.49% | 1 | 5.26% |
| ganesh venkatesan | ganesh venkatesan | 1 | 0.49% | 1 | 5.26% |
| Total | 204 | 100.00% | 19 | 100.00% |
/**
* e1000_close - Disables a network interface
* @netdev: network interface device structure
*
* Returns 0, this is not allowed to fail
*
* The close entry point is called when an interface is de-activated
* by the OS. The hardware is still under the drivers control, but
* needs to be disabled. A global MAC reset is issued to stop the
* hardware, and all transmit and receive resources are freed.
**/
int e1000_close(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
int count = E1000_CHECK_RESET_COUNT;
while (test_bit(__E1000_RESETTING, &adapter->flags) && count--)
usleep_range(10000, 20000);
WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
e1000_down(adapter);
e1000_power_down_phy(adapter);
e1000_free_irq(adapter);
e1000_free_all_tx_resources(adapter);
e1000_free_all_rx_resources(adapter);
/* kill manageability vlan ID if supported, but not if a vlan with
* the same ID is registered on the host OS (let 8021q kill it)
*/
if ((hw->mng_cookie.status &
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
!test_bit(adapter->mng_vlan_id, adapter->active_vlans)) {
e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
adapter->mng_vlan_id);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 31 | 22.30% | 3 | 23.08% |
| jeff garzik | jeff garzik | 29 | 20.86% | 1 | 7.69% |
| yanjun zhu | yanjun zhu | 27 | 19.42% | 1 | 7.69% |
| auke kok | auke kok | 23 | 16.55% | 2 | 15.38% |
| joe perches | joe perches | 11 | 7.91% | 1 | 7.69% |
| bruce allan | bruce allan | 6 | 4.32% | 1 | 7.69% |
| patrick mchardy | patrick mchardy | 5 | 3.60% | 1 | 7.69% |
| jiri pirko | jiri pirko | 3 | 2.16% | 1 | 7.69% |
| dan aloni | dan aloni | 3 | 2.16% | 1 | 7.69% |
| jeff kirsher | jeff kirsher | 1 | 0.72% | 1 | 7.69% |
| Total | 139 | 100.00% | 13 | 100.00% |
/**
* e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
* @adapter: address of board private structure
* @start: address of beginning of memory
* @len: length of memory
**/
static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start,
unsigned long len)
{
struct e1000_hw *hw = &adapter->hw;
unsigned long begin = (unsigned long)start;
unsigned long end = begin + len;
/* First rev 82545 and 82546 need to not allow any memory
* write location to cross 64k boundary due to errata 23
*/
if (hw->mac_type == e1000_82545 ||
hw->mac_type == e1000_ce4100 ||
hw->mac_type == e1000_82546) {
return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
}
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 71 | 75.53% | 2 | 33.33% |
| joe perches | joe perches | 16 | 17.02% | 2 | 33.33% |
| dirk brandewie | dirk brandewie | 6 | 6.38% | 1 | 16.67% |
| jeff kirsher | jeff kirsher | 1 | 1.06% | 1 | 16.67% |
| Total | 94 | 100.00% | 6 | 100.00% |
/**
* e1000_setup_tx_resources - allocate Tx resources (Descriptors)
* @adapter: board private structure
* @txdr: tx descriptor ring (for a specific queue) to setup
*
* Return 0 on success, negative on failure
**/
static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
struct e1000_tx_ring *txdr)
{
struct pci_dev *pdev = adapter->pdev;
int size;
size = sizeof(struct e1000_tx_buffer) * txdr->count;
txdr->buffer_info = vzalloc(size);
if (!txdr->buffer_info)
return -ENOMEM;
/* round up to nearest 4K */
txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
txdr->size = ALIGN(txdr->size, 4096);
txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma,
GFP_KERNEL);
if (!txdr->desc) {
setup_tx_desc_die:
vfree(txdr->buffer_info);
return -ENOMEM;
}
/* Fix for errata 23, can't cross 64kB boundary */
if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
void *olddesc = txdr->desc;
dma_addr_t olddma = txdr->dma;
e_err(tx_err, "txdr align check failed: %u bytes at %p\n",
txdr->size, txdr->desc);
/* Try again, without freeing the previous */
txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size,
&txdr->dma, GFP_KERNEL);
/* Failed allocation, critical failure */
if (!txdr->desc) {
dma_free_coherent(&pdev->dev, txdr->size, olddesc,
olddma);
goto setup_tx_desc_die;
}
if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
/* give up */
dma_free_coherent(&pdev->dev, txdr->size, txdr->desc,
txdr->dma);
dma_free_coherent(&pdev->dev, txdr->size, olddesc,
olddma);
e_err(probe, "Unable to allocate aligned memory "
"for the transmit descriptor ring\n");
vfree(txdr->buffer_info);
return -ENOMEM;
} else {
/* Free old allocation, new allocation was successful */
dma_free_coherent(&pdev->dev, txdr->size, olddesc,
olddma);
}
}
memset(txdr->desc, 0, txdr->size);
txdr->next_to_use = 0;
txdr->next_to_clean = 0;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 208 | 58.26% | 3 | 25.00% |
| jeff garzik | jeff garzik | 105 | 29.41% | 1 | 8.33% |
| nicholas nunley | nicholas nunley | 28 | 7.84% | 1 | 8.33% |
| emil tantilov | emil tantilov | 7 | 1.96% | 2 | 16.67% |
| milind arun choudhary | milind arun choudhary | 5 | 1.40% | 1 | 8.33% |
| florian westphal | florian westphal | 1 | 0.28% | 1 | 8.33% |
| eric dumazet | eric dumazet | 1 | 0.28% | 1 | 8.33% |
| jesse brandeburg | jesse brandeburg | 1 | 0.28% | 1 | 8.33% |
| adrian bunk | adrian bunk | 1 | 0.28% | 1 | 8.33% |
| Total | 357 | 100.00% | 12 | 100.00% |
/**
* e1000_setup_all_tx_resources - wrapper to allocate Tx resources
* (Descriptors) for all queues
* @adapter: board private structure
*
* Return 0 on success, negative on failure
**/
int e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
{
int i, err = 0;
for (i = 0; i < adapter->num_tx_queues; i++) {
err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
if (err) {
e_err(probe, "Allocation for Tx Queue %u failed\n", i);
for (i-- ; i >= 0; i--)
e1000_free_tx_resources(adapter,
&adapter->tx_ring[i]);
break;
}
}
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 60 | 64.52% | 2 | 25.00% |
| vasily averin | vasily averin | 25 | 26.88% | 1 | 12.50% |
| jeff garzik | jeff garzik | 3 | 3.23% | 1 | 12.50% |
| emil tantilov | emil tantilov | 3 | 3.23% | 2 | 25.00% |
| jeff kirsher | jeff kirsher | 1 | 1.08% | 1 | 12.50% |
| joe perches | joe perches | 1 | 1.08% | 1 | 12.50% |
| Total | 93 | 100.00% | 8 | 100.00% |
/**
* e1000_configure_tx - Configure 8254x Transmit Unit after Reset
* @adapter: board private structure
*
* Configure the Tx unit of the MAC after a reset.
**/
static void e1000_configure_tx(struct e1000_adapter *adapter)
{
u64 tdba;
struct e1000_hw *hw = &adapter->hw;
u32 tdlen, tctl, tipg;
u32 ipgr1, ipgr2;
/* Setup the HW Tx Head and Tail descriptor pointers */
switch (adapter->num_tx_queues) {
case 1:
default:
tdba = adapter->tx_ring[0].dma;
tdlen = adapter->tx_ring[0].count *
sizeof(struct e1000_tx_desc);
ew32(TDLEN, tdlen);
ew32(TDBAH, (tdba >> 32));
ew32(TDBAL, (tdba & 0x00000000ffffffffULL));
ew32(TDT, 0);
ew32(TDH, 0);
adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ?
E1000_TDH : E1000_82542_TDH);
adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ?
E1000_TDT : E1000_82542_TDT);
break;
}
/* Set the default values for the Tx Inter Packet Gap timer */
if ((hw->media_type == e1000_media_type_fiber ||
hw->media_type == e1000_media_type_internal_serdes))
tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
else
tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
switch (hw->mac_type) {
case e1000_82542_rev2_0:
case e1000_82542_rev2_1:
tipg = DEFAULT_82542_TIPG_IPGT;
ipgr1 = DEFAULT_82542_TIPG_IPGR1;
ipgr2 = DEFAULT_82542_TIPG_IPGR2;
break;
default:
ipgr1 = DEFAULT_82543_TIPG_IPGR1;
ipgr2 = DEFAULT_82543_TIPG_IPGR2;
break;
}
tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
ew32(TIPG, tipg);
/* Set the Tx Interrupt Delay register */
ew32(TIDV, adapter->tx_int_delay);
if (hw->mac_type >= e1000_82540)
ew32(TADV, adapter->tx_abs_int_delay);
/* Program the Transmit Control Register */
tctl = er32(TCTL);
tctl &= ~E1000_TCTL_CT;
tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
(E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
e1000_config_collision_dist(hw);
/* Setup Transmit Descriptor Settings for eop descriptor */
adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
/* only set IDE if we are delaying interrupts using the timers */
if (adapter->tx_int_delay)
adapter->txd_cmd |= E1000_TXD_CMD_IDE;
if (hw->mac_type < e1000_82543)
adapter->txd_cmd |= E1000_TXD_CMD_RPS;
else
adapter->txd_cmd |= E1000_TXD_CMD_RS;
/* Cache if we're 82544 running in PCI-X because we'll
* need this to apply a workaround later in the send path.
*/
if (hw->mac_type == e1000_82544 &&
hw->bus_type == e1000_bus_type_pcix)
adapter->pcix_82544 = true;
ew32(TCTL, tctl);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 130 | 34.48% | 1 | 4.55% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 69 | 18.30% | 2 | 9.09% |
| jeff kirsher | jeff kirsher | 49 | 13.00% | 5 | 22.73% |
| scott feldman | scott feldman | 35 | 9.28% | 2 | 9.09% |
| auke kok | auke kok | 34 | 9.02% | 2 | 9.09% |
| christopher goldfarb | christopher goldfarb | 20 | 5.31% | 2 | 9.09% |
| jesse brandeburg | jesse brandeburg | 17 | 4.51% | 3 | 13.64% |
| joe perches | joe perches | 13 | 3.45% | 2 | 9.09% |
| ganesh venkatesan | ganesh venkatesan | 5 | 1.33% | 1 | 4.55% |
| jeb cramer | jeb cramer | 4 | 1.06% | 1 | 4.55% |
| rusty russell | rusty russell | 1 | 0.27% | 1 | 4.55% |
| Total | 377 | 100.00% | 22 | 100.00% |
/**
* e1000_setup_rx_resources - allocate Rx resources (Descriptors)
* @adapter: board private structure
* @rxdr: rx descriptor ring (for a specific queue) to setup
*
* Returns 0 on success, negative on failure
**/
static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
struct e1000_rx_ring *rxdr)
{
struct pci_dev *pdev = adapter->pdev;
int size, desc_len;
size = sizeof(struct e1000_rx_buffer) * rxdr->count;
rxdr->buffer_info = vzalloc(size);
if (!rxdr->buffer_info)
return -ENOMEM;
desc_len = sizeof(struct e1000_rx_desc);
/* Round up to nearest 4K */
rxdr->size = rxdr->count * desc_len;
rxdr->size = ALIGN(rxdr->size, 4096);
rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma,
GFP_KERNEL);
if (!rxdr->desc) {
setup_rx_desc_die:
vfree(rxdr->buffer_info);
return -ENOMEM;
}
/* Fix for errata 23, can't cross 64kB boundary */
if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
void *olddesc = rxdr->desc;
dma_addr_t olddma = rxdr->dma;
e_err(rx_err, "rxdr align check failed: %u bytes at %p\n",
rxdr->size, rxdr->desc);
/* Try again, without freeing the previous */
rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size,
&rxdr->dma, GFP_KERNEL);
/* Failed allocation, critical failure */
if (!rxdr->desc) {
dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
olddma);
goto setup_rx_desc_die;
}
if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
/* give up */
dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc,
rxdr->dma);
dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
olddma);
e_err(probe, "Unable to allocate aligned memory for "
"the Rx descriptor ring\n");
goto setup_rx_desc_die;
} else {
/* Free old allocation, new allocation was successful */
dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
olddma);
}
}
memset(rxdr->desc, 0, rxdr->size);
rxdr->next_to_clean = 0;
rxdr->next_to_use = 0;
rxdr->rx_skb_top = NULL;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 207 | 57.34% | 4 | 28.57% |
| jeff garzik | jeff garzik | 98 | 27.15% | 1 | 7.14% |
| nicholas nunley | nicholas nunley | 28 | 7.76% | 1 | 7.14% |
| emil tantilov | emil tantilov | 9 | 2.49% | 2 | 14.29% |
| jesse brandeburg | jesse brandeburg | 6 | 1.66% | 1 | 7.14% |
| milind arun choudhary | milind arun choudhary | 5 | 1.39% | 1 | 7.14% |
| ganesh venkatesan | ganesh venkatesan | 5 | 1.39% | 1 | 7.14% |
| adrian bunk | adrian bunk | 1 | 0.28% | 1 | 7.14% |
| eric dumazet | eric dumazet | 1 | 0.28% | 1 | 7.14% |
| florian westphal | florian westphal | 1 | 0.28% | 1 | 7.14% |
| Total | 361 | 100.00% | 14 | 100.00% |
/**
* e1000_setup_all_rx_resources - wrapper to allocate Rx resources
* (Descriptors) for all queues
* @adapter: board private structure
*
* Return 0 on success, negative on failure
**/
int e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
{
int i, err = 0;
for (i = 0; i < adapter->num_rx_queues; i++) {
err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
if (err) {
e_err(probe, "Allocation for Rx Queue %u failed\n", i);
for (i-- ; i >= 0; i--)
e1000_free_rx_resources(adapter,
&adapter->rx_ring[i]);
break;
}
}
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 63 | 67.74% | 1 | 16.67% |
| vasily averin | vasily averin | 25 | 26.88% | 1 | 16.67% |
| emil tantilov | emil tantilov | 3 | 3.23% | 2 | 33.33% |
| jeff kirsher | jeff kirsher | 1 | 1.08% | 1 | 16.67% |
| joe perches | joe perches | 1 | 1.08% | 1 | 16.67% |
| Total | 93 | 100.00% | 6 | 100.00% |
/**
* e1000_setup_rctl - configure the receive control registers
* @adapter: Board private structure
**/
static void e1000_setup_rctl(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 rctl;
rctl = er32(RCTL);
rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
rctl |= E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
E1000_RCTL_RDMTS_HALF |
(hw->mc_filter_type << E1000_RCTL_MO_SHIFT);
if (hw->tbi_compatibility_on == 1)
rctl |= E1000_RCTL_SBP;
else
rctl &= ~E1000_RCTL_SBP;
if (adapter->netdev->mtu <= ETH_DATA_LEN)
rctl &= ~E1000_RCTL_LPE;
else
rctl |= E1000_RCTL_LPE;
/* Setup buffer sizes */
rctl &= ~E1000_RCTL_SZ_4096;
rctl |= E1000_RCTL_BSEX;
switch (adapter->rx_buffer_len) {
case E1000_RXBUFFER_2048:
default:
rctl |= E1000_RCTL_SZ_2048;
rctl &= ~E1000_RCTL_BSEX;
break;
case E1000_RXBUFFER_4096:
rctl |= E1000_RCTL_SZ_4096;
break;
case E1000_RXBUFFER_8192:
rctl |= E1000_RCTL_SZ_8192;
break;
case E1000_RXBUFFER_16384:
rctl |= E1000_RCTL_SZ_16384;
break;
}
/* This is useful for sniffing bad packets. */
if (adapter->netdev->features & NETIF_F_RXALL) {
/* UPE and MPE will be handled by normal PROMISC logic
* in e1000e_set_rx_mode
*/
rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
E1000_RCTL_BAM | /* RX All Bcast Pkts */
E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
E1000_RCTL_DPF | /* Allow filtered pause */
E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
/* Do not mess with E1000_CTRL_VME, it affects transmit as well,
* and that breaks VLANs.
*/
}
ew32(RCTL, rctl);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff kirsher | jeff kirsher | 43 | 21.61% | 2 | 16.67% |
| ben greear | ben greear | 41 | 20.60% | 1 | 8.33% |
| jeff garzik | jeff garzik | 38 | 19.10% | 1 | 8.33% |
| christopher goldfarb | christopher goldfarb | 32 | 16.08% | 2 | 16.67% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 24 | 12.06% | 2 | 16.67% |
| joe perches | joe perches | 14 | 7.04% | 2 | 16.67% |
| jesse brandeburg | jesse brandeburg | 5 | 2.51% | 1 | 8.33% |
| ganesh venkatesan | ganesh venkatesan | 2 | 1.01% | 1 | 8.33% |
| Total | 199 | 100.00% | 12 | 100.00% |
/**
* e1000_configure_rx - Configure 8254x Receive Unit after Reset
* @adapter: board private structure
*
* Configure the Rx unit of the MAC after a reset.
**/
static void e1000_configure_rx(struct e1000_adapter *adapter)
{
u64 rdba;
struct e1000_hw *hw = &adapter->hw;
u32 rdlen, rctl, rxcsum;
if (adapter->netdev->mtu > ETH_DATA_LEN) {
rdlen = adapter->rx_ring[0].count *
sizeof(struct e1000_rx_desc);
adapter->clean_rx = e1000_clean_jumbo_rx_irq;
adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
} else {
rdlen = adapter->rx_ring[0].count *
sizeof(struct e1000_rx_desc);
adapter->clean_rx = e1000_clean_rx_irq;
adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
}
/* disable receives while setting up the descriptors */
rctl = er32(RCTL);
ew32(RCTL, rctl & ~E1000_RCTL_EN);
/* set the Receive Delay Timer Register */
ew32(RDTR, adapter->rx_int_delay);
if (hw->mac_type >= e1000_82540) {
ew32(RADV, adapter->rx_abs_int_delay);
if (adapter->itr_setting != 0)
ew32(ITR, 1000000000 / (adapter->itr * 256));
}
/* Setup the HW Rx Head and Tail Descriptor Pointers and
* the Base and Length of the Rx Descriptor Ring
*/
switch (adapter->num_rx_queues) {
case 1:
default:
rdba = adapter->rx_ring[0].dma;
ew32(RDLEN, rdlen);
ew32(RDBAH, (rdba >> 32));
ew32(RDBAL, (rdba & 0x00000000ffffffffULL));
ew32(RDT, 0);
ew32(RDH, 0);
adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ?
E1000_RDH : E1000_82542_RDH);
adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ?
E1000_RDT : E1000_82542_RDT);
break;
}
/* Enable 82543 Receive Checksum Offload for TCP and UDP */
if (hw->mac_type >= e1000_82543) {
rxcsum = er32(RXCSUM);
if (adapter->rx_csum)
rxcsum |= E1000_RXCSUM_TUOFL;
else
/* don't need to clear IPPCSE as it defaults to 0 */
rxcsum &= ~E1000_RXCSUM_TUOFL;
ew32(RXCSUM, rxcsum);
}
/* Enable Receives */
ew32(RCTL, rctl | E1000_RCTL_EN);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 96 | 28.24% | 4 | 18.18% |
| jesse brandeburg | jesse brandeburg | 88 | 25.88% | 4 | 18.18% |
| jeff garzik | jeff garzik | 48 | 14.12% | 1 | 4.55% |
| auke kok | auke kok | 34 | 10.00% | 2 | 9.09% |
| christopher goldfarb | christopher goldfarb | 19 | 5.59% | 2 | 9.09% |
| jeb cramer | jeb cramer | 14 | 4.12% | 1 | 4.55% |
| joe perches | joe perches | 13 | 3.82% | 1 | 4.55% |
| jeff kirsher | jeff kirsher | 12 | 3.53% | 3 | 13.64% |
| jeb j. cramer | jeb j. cramer | 8 | 2.35% | 1 | 4.55% |
| scott feldman | scott feldman | 5 | 1.47% | 1 | 4.55% |
| dean nelson | dean nelson | 2 | 0.59% | 1 | 4.55% |
| ganesh venkatesan | ganesh venkatesan | 1 | 0.29% | 1 | 4.55% |
| Total | 340 | 100.00% | 22 | 100.00% |
/**
* e1000_free_tx_resources - Free Tx Resources per Queue
* @adapter: board private structure
* @tx_ring: Tx descriptor ring for a specific queue
*
* Free all transmit software resources
**/
static void e1000_free_tx_resources(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring)
{
struct pci_dev *pdev = adapter->pdev;
e1000_clean_tx_ring(adapter, tx_ring);
vfree(tx_ring->buffer_info);
tx_ring->buffer_info = NULL;
dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
tx_ring->dma);
tx_ring->desc = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 36 | 50.70% | 1 | 20.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 29 | 40.85% | 1 | 20.00% |
| nicholas nunley | nicholas nunley | 4 | 5.63% | 1 | 20.00% |
| ganesh venkatesan | ganesh venkatesan | 1 | 1.41% | 1 | 20.00% |
| adrian bunk | adrian bunk | 1 | 1.41% | 1 | 20.00% |
| Total | 71 | 100.00% | 5 | 100.00% |
/**
* e1000_free_all_tx_resources - Free Tx Resources for All Queues
* @adapter: board private structure
*
* Free all transmit software resources
**/
void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_tx_queues; i++)
e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 29 | 70.73% | 1 | 25.00% |
| jeff garzik | jeff garzik | 10 | 24.39% | 1 | 25.00% |
| joe perches | joe perches | 1 | 2.44% | 1 | 25.00% |
| jeff kirsher | jeff kirsher | 1 | 2.44% | 1 | 25.00% |
| Total | 41 | 100.00% | 4 | 100.00% |
static void
e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
struct e1000_tx_buffer *buffer_info)
{
if (buffer_info->dma) {
if (buffer_info->mapped_as_page)
dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
buffer_info->length, DMA_TO_DEVICE);
else
dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
buffer_info->length,
DMA_TO_DEVICE);
buffer_info->dma = 0;
}
if (buffer_info->skb) {
dev_kfree_skb_any(buffer_info->skb);
buffer_info->skb = NULL;
}
buffer_info->time_stamp = 0;
/* buffer_info must be completely set up in the transmit path */
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| alexander duyck | alexander duyck | 45 | 42.86% | 2 | 25.00% |
| ganesh venkatesan | ganesh venkatesan | 38 | 36.19% | 1 | 12.50% |
| nicholas nunley | nicholas nunley | 10 | 9.52% | 1 | 12.50% |
| jesse brandeburg | jesse brandeburg | 9 | 8.57% | 2 | 25.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 2 | 1.90% | 1 | 12.50% |
| florian westphal | florian westphal | 1 | 0.95% | 1 | 12.50% |
| Total | 105 | 100.00% | 8 | 100.00% |
/**
* e1000_clean_tx_ring - Free Tx Buffers
* @adapter: board private structure
* @tx_ring: ring to be cleaned
**/
static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring)
{
struct e1000_hw *hw = &adapter->hw;
struct e1000_tx_buffer *buffer_info;
unsigned long size;
unsigned int i;
/* Free all the Tx ring sk_buffs */
for (i = 0; i < tx_ring->count; i++) {
buffer_info = &tx_ring->buffer_info[i];
e1000_unmap_and_free_tx_resource(adapter, buffer_info);
}
netdev_reset_queue(adapter->netdev);
size = sizeof(struct e1000_tx_buffer) * tx_ring->count;
memset(tx_ring->buffer_info, 0, size);
/* Zero out the descriptor ring */
memset(tx_ring->desc, 0, tx_ring->size);
tx_ring->next_to_use = 0;
tx_ring->next_to_clean = 0;
tx_ring->last_tx_tso = false;
writel(0, hw->hw_addr + tx_ring->tdh);
writel(0, hw->hw_addr + tx_ring->tdt);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 92 | 56.79% | 1 | 10.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 20 | 12.35% | 1 | 10.00% |
| scott feldman | scott feldman | 19 | 11.73% | 1 | 10.00% |
| joe perches | joe perches | 12 | 7.41% | 1 | 10.00% |
| otto estuardo solares cabrera | otto estuardo solares cabrera | 7 | 4.32% | 1 | 10.00% |
| jeff kirsher | jeff kirsher | 5 | 3.09% | 1 | 10.00% |
| florian westphal | florian westphal | 2 | 1.23% | 1 | 10.00% |
| christopher goldfarb | christopher goldfarb | 2 | 1.23% | 1 | 10.00% |
| ganesh venkatesan | ganesh venkatesan | 2 | 1.23% | 1 | 10.00% |
| rusty russell | rusty russell | 1 | 0.62% | 1 | 10.00% |
| Total | 162 | 100.00% | 10 | 100.00% |
/**
* e1000_clean_all_tx_rings - Free Tx Buffers for all queues
* @adapter: board private structure
**/
static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_tx_queues; i++)
e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 30 | 71.43% | 1 | 25.00% |
| jeff garzik | jeff garzik | 8 | 19.05% | 1 | 25.00% |
| scott feldman | scott feldman | 3 | 7.14% | 1 | 25.00% |
| jeff kirsher | jeff kirsher | 1 | 2.38% | 1 | 25.00% |
| Total | 42 | 100.00% | 4 | 100.00% |
/**
* e1000_free_rx_resources - Free Rx Resources
* @adapter: board private structure
* @rx_ring: ring to clean the resources from
*
* Free all receive software resources
**/
static void e1000_free_rx_resources(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring)
{
struct pci_dev *pdev = adapter->pdev;
e1000_clean_rx_ring(adapter, rx_ring);
vfree(rx_ring->buffer_info);
rx_ring->buffer_info = NULL;
dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
rx_ring->dma);
rx_ring->desc = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 42 | 59.15% | 1 | 16.67% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 15 | 21.13% | 1 | 16.67% |
| scott feldman | scott feldman | 8 | 11.27% | 1 | 16.67% |
| nicholas nunley | nicholas nunley | 4 | 5.63% | 1 | 16.67% |
| adrian bunk | adrian bunk | 1 | 1.41% | 1 | 16.67% |
| ganesh venkatesan | ganesh venkatesan | 1 | 1.41% | 1 | 16.67% |
| Total | 71 | 100.00% | 6 | 100.00% |
/**
* e1000_free_all_rx_resources - Free Rx Resources for All Queues
* @adapter: board private structure
*
* Free all receive software resources
**/
void e1000_free_all_rx_resources(struct e1000_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_rx_queues; i++)
e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 28 | 68.29% | 1 | 20.00% |
| jeff garzik | jeff garzik | 7 | 17.07% | 1 | 20.00% |
| scott feldman | scott feldman | 4 | 9.76% | 1 | 20.00% |
| jeff kirsher | jeff kirsher | 1 | 2.44% | 1 | 20.00% |
| joe perches | joe perches | 1 | 2.44% | 1 | 20.00% |
| Total | 41 | 100.00% | 5 | 100.00% |
#define E1000_HEADROOM (NET_SKB_PAD + NET_IP_ALIGN)
static unsigned int e1000_frag_len(const struct e1000_adapter *a)
{
return SKB_DATA_ALIGN(a->rx_buffer_len + E1000_HEADROOM) +
SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| florian westphal | florian westphal | 32 | 100.00% | 1 | 100.00% |
| Total | 32 | 100.00% | 1 | 100.00% |
static void *e1000_alloc_frag(const struct e1000_adapter *a)
{
unsigned int len = e1000_frag_len(a);
u8 *data = netdev_alloc_frag(len);
if (likely(data))
data += E1000_HEADROOM;
return data;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| florian westphal | florian westphal | 45 | 100.00% | 1 | 100.00% |
| Total | 45 | 100.00% | 1 | 100.00% |
/**
* e1000_clean_rx_ring - Free Rx Buffers per Queue
* @adapter: board private structure
* @rx_ring: ring to free buffers from
**/
static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring)
{
struct e1000_hw *hw = &adapter->hw;
struct e1000_rx_buffer *buffer_info;
struct pci_dev *pdev = adapter->pdev;
unsigned long size;
unsigned int i;
/* Free all the Rx netfrags */
for (i = 0; i < rx_ring->count; i++) {
buffer_info = &rx_ring->buffer_info[i];
if (adapter->clean_rx == e1000_clean_rx_irq) {
if (buffer_info->dma)
dma_unmap_single(&pdev->dev, buffer_info->dma,
adapter->rx_buffer_len,
DMA_FROM_DEVICE);
if (buffer_info->rxbuf.data) {
skb_free_frag(buffer_info->rxbuf.data);
buffer_info->rxbuf.data = NULL;
}
} else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) {
if (buffer_info->dma)
dma_unmap_page(&pdev->dev, buffer_info->dma,
adapter->rx_buffer_len,
DMA_FROM_DEVICE);
if (buffer_info->rxbuf.page) {
put_page(buffer_info->rxbuf.page);
buffer_info->rxbuf.page = NULL;
}
}
buffer_info->dma = 0;
}
/* there also may be some cached data from a chained receive */
napi_free_frags(&adapter->napi);
rx_ring->rx_skb_top = NULL;
size = sizeof(struct e1000_rx_buffer) * rx_ring->count;
memset(rx_ring->buffer_info, 0, size);
/* Zero out the descriptor ring */
memset(rx_ring->desc, 0, rx_ring->size);
rx_ring->next_to_clean = 0;
rx_ring->next_to_use = 0;
writel(0, hw->hw_addr + rx_ring->rdh);
writel(0, hw->hw_addr + rx_ring->rdt);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 70 | 23.73% | 3 | 20.00% |
| jeff garzik | jeff garzik | 69 | 23.39% | 1 | 6.67% |
| florian westphal | florian westphal | 58 | 19.66% | 3 | 20.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 46 | 15.59% | 2 | 13.33% |
| scott feldman | scott feldman | 20 | 6.78% | 1 | 6.67% |
| joe perches | joe perches | 12 | 4.07% | 1 | 6.67% |
| nicholas nunley | nicholas nunley | 10 | 3.39% | 1 | 6.67% |
| jeff kirsher | jeff kirsher | 7 | 2.37% | 1 | 6.67% |
| christopher goldfarb | christopher goldfarb | 2 | 0.68% | 1 | 6.67% |
| alexander duyck | alexander duyck | 1 | 0.34% | 1 | 6.67% |
| Total | 295 | 100.00% | 15 | 100.00% |
/**
* e1000_clean_all_rx_rings - Free Rx Buffers for all queues
* @adapter: board private structure
**/
static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_rx_queues; i++)
e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 37 | 88.10% | 1 | 33.33% |
| jeff garzik | jeff garzik | 4 | 9.52% | 1 | 33.33% |
| jeff kirsher | jeff kirsher | 1 | 2.38% | 1 | 33.33% |
| Total | 42 | 100.00% | 3 | 100.00% |
/* The 82542 2.0 (revision 2) needs to have the receive unit in reset
* and memory write and invalidate disabled for certain operations
*/
static void e1000_enter_82542_rst(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
u32 rctl;
e1000_pci_clear_mwi(hw);
rctl = er32(RCTL);
rctl |= E1000_RCTL_RST;
ew32(RCTL, rctl);
E1000_WRITE_FLUSH();
mdelay(5);
if (netif_running(netdev))
e1000_clean_all_rx_rings(adapter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 56 | 73.68% | 1 | 20.00% |
| joe perches | joe perches | 14 | 18.42% | 2 | 40.00% |
| scott feldman | scott feldman | 5 | 6.58% | 1 | 20.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 1 | 1.32% | 1 | 20.00% |
| Total | 76 | 100.00% | 5 | 100.00% |
static void e1000_leave_82542_rst(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
u32 rctl;
rctl = er32(RCTL);
rctl &= ~E1000_RCTL_RST;
ew32(RCTL, rctl);
E1000_WRITE_FLUSH();
mdelay(5);
if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
e1000_pci_set_mwi(hw);
if (netif_running(netdev)) {
/* No need to loop, because 82542 supports only 1 queue */
struct e1000_rx_ring *ring = &adapter->rx_ring[0];
e1000_configure_rx(adapter);
adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 62 | 53.91% | 1 | 14.29% |
| jeff kirsher | jeff kirsher | 19 | 16.52% | 1 | 14.29% |
| joe perches | joe perches | 15 | 13.04% | 2 | 28.57% |
| scott feldman | scott feldman | 7 | 6.09% | 1 | 14.29% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 7 | 6.09% | 1 | 14.29% |
| jesse brandeburg | jesse brandeburg | 5 | 4.35% | 1 | 14.29% |
| Total | 115 | 100.00% | 7 | 100.00% |
/**
* e1000_set_mac - Change the Ethernet Address of the NIC
* @netdev: network interface device structure
* @p: pointer to an address structure
*
* Returns 0 on success, negative on failure
**/
static int e1000_set_mac(struct net_device *netdev, void *p)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
struct sockaddr *addr = p;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
/* 82542 2.0 needs to be in reset to write receive address registers */
if (hw->mac_type == e1000_82542_rev2_0)
e1000_enter_82542_rst(adapter);
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len);
e1000_rar_set(hw, hw->mac_addr, 0);
if (hw->mac_type == e1000_82542_rev2_0)
e1000_leave_82542_rst(adapter);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 105 | 82.68% | 2 | 40.00% |
| joe perches | joe perches | 14 | 11.02% | 1 | 20.00% |
| christopher goldfarb | christopher goldfarb | 5 | 3.94% | 1 | 20.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 3 | 2.36% | 1 | 20.00% |
| Total | 127 | 100.00% | 5 | 100.00% |
/**
* e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
* @netdev: network interface device structure
*
* The set_rx_mode entry point is called whenever the unicast or multicast
* address lists or the network interface flags are updated. This routine is
* responsible for configuring the hardware for proper unicast, multicast,
* promiscuous mode, and all-multi behavior.
**/
static void e1000_set_rx_mode(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
struct netdev_hw_addr *ha;
bool use_uc = false;
u32 rctl;
u32 hash_value;
int i, rar_entries = E1000_RAR_ENTRIES;
int mta_reg_count = E1000_NUM_MTA_REGISTERS;
u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC);
if (!mcarray)
return;
/* Check for Promiscuous and All Multicast modes */
rctl = er32(RCTL);
if (netdev->flags & IFF_PROMISC) {
rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
rctl &= ~E1000_RCTL_VFE;
} else {
if (netdev->flags & IFF_ALLMULTI)
rctl |= E1000_RCTL_MPE;
else
rctl &= ~E1000_RCTL_MPE;
/* Enable VLAN filter if there is a VLAN */
if (e1000_vlan_used(adapter))
rctl |= E1000_RCTL_VFE;
}
if (netdev_uc_count(netdev) > rar_entries - 1) {
rctl |= E1000_RCTL_UPE;
} else if (!(netdev->flags & IFF_PROMISC)) {
rctl &= ~E1000_RCTL_UPE;
use_uc = true;
}
ew32(RCTL, rctl);
/* 82542 2.0 needs to be in reset to write receive address registers */
if (hw->mac_type == e1000_82542_rev2_0)
e1000_enter_82542_rst(adapter);
/* load the first 14 addresses into the exact filters 1-14. Unicast
* addresses take precedence to avoid disabling unicast filtering
* when possible.
*
* RAR 0 is used for the station MAC address
* if there are not 14 addresses, go ahead and clear the filters
*/
i = 1;
if (use_uc)
netdev_for_each_uc_addr(ha, netdev) {
if (i == rar_entries)
break;
e1000_rar_set(hw, ha->addr, i++);
}
netdev_for_each_mc_addr(ha, netdev) {
if (i == rar_entries) {
/* load any remaining addresses into the hash table */
u32 hash_reg, hash_bit, mta;
hash_value = e1000_hash_mc_addr(hw, ha->addr);
hash_reg = (hash_value >> 5) & 0x7F;
hash_bit = hash_value & 0x1F;
mta = (1 << hash_bit);
mcarray[hash_reg] |= mta;
} else {
e1000_rar_set(hw, ha->addr, i++);
}
}
for (; i < rar_entries; i++) {
E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
E1000_WRITE_FLUSH();
E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
E1000_WRITE_FLUSH();
}
/* write the hash table completely, write from bottom to avoid
* both stupid write combining chipsets, and flushing each write
*/
for (i = mta_reg_count - 1; i >= 0 ; i--) {
/* If we are on an 82544 has an errata where writing odd
* offsets overwrites the previous even offset, but writing
* backwards over the range solves the issue by always
* writing the odd offset first
*/
E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]);
}
E1000_WRITE_FLUSH();
if (hw->mac_type == e1000_82542_rev2_0)
e1000_leave_82542_rst(adapter);
kfree(mcarray);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 136 | 32.00% | 1 | 5.00% |
| jiri pirko | jiri pirko | 109 | 25.65% | 5 | 25.00% |
| jesse brandeburg | jesse brandeburg | 94 | 22.12% | 1 | 5.00% |
| patrick mchardy | patrick mchardy | 54 | 12.71% | 2 | 10.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 8 | 1.88% | 3 | 15.00% |
| christopher goldfarb | christopher goldfarb | 7 | 1.65% | 2 | 10.00% |
| auke kok | auke kok | 5 | 1.18% | 1 | 5.00% |
| david graham | david graham | 5 | 1.18% | 1 | 5.00% |
| joe perches | joe perches | 4 | 0.94% | 2 | 10.00% |
| jeff kirsher | jeff kirsher | 2 | 0.47% | 1 | 5.00% |
| uwe kleine-koenig | uwe kleine-koenig | 1 | 0.24% | 1 | 5.00% |
| Total | 425 | 100.00% | 20 | 100.00% |
/**
* e1000_update_phy_info_task - get phy info
* @work: work struct contained inside adapter struct
*
* Need to wait a few seconds after link up to get diagnostic information from
* the phy
*/
static void e1000_update_phy_info_task(struct work_struct *work)
{
struct e1000_adapter *adapter = container_of(work,
struct e1000_adapter,
phy_info_task.work);
e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 30 | 73.17% | 2 | 50.00% |
| jeff garzik | jeff garzik | 8 | 19.51% | 1 | 25.00% |
| joe perches | joe perches | 3 | 7.32% | 1 | 25.00% |
| Total | 41 | 100.00% | 4 | 100.00% |
/**
* e1000_82547_tx_fifo_stall_task - task to complete work
* @work: work struct contained inside adapter struct
**/
static void e1000_82547_tx_fifo_stall_task(struct work_struct *work)
{
struct e1000_adapter *adapter = container_of(work,
struct e1000_adapter,
fifo_stall_task.work);
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
u32 tctl;
if (atomic_read(&adapter->tx_fifo_stall)) {
if ((er32(TDT) == er32(TDH)) &&
(er32(TDFT) == er32(TDFH)) &&
(er32(TDFTS) == er32(TDFHS))) {
tctl = er32(TCTL);
ew32(TCTL, tctl & ~E1000_TCTL_EN);
ew32(TDFT, adapter->tx_head_addr);
ew32(TDFH, adapter->tx_head_addr);
ew32(TDFTS, adapter->tx_head_addr);
ew32(TDFHS, adapter->tx_head_addr);
ew32(TCTL, tctl);
E1000_WRITE_FLUSH();
adapter->tx_fifo_head = 0;
atomic_set(&adapter->tx_fifo_stall, 0);
netif_wake_queue(netdev);
} else if (!test_bit(__E1000_DOWN, &adapter->flags)) {
schedule_delayed_work(&adapter->fifo_stall_task, 1);
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeb cramer | jeb cramer | 122 | 57.55% | 1 | 11.11% |
| jesse brandeburg | jesse brandeburg | 45 | 21.23% | 4 | 44.44% |
| joe perches | joe perches | 25 | 11.79% | 2 | 22.22% |
| jeff garzik | jeff garzik | 19 | 8.96% | 1 | 11.11% |
| scott feldman | scott feldman | 1 | 0.47% | 1 | 11.11% |
| Total | 212 | 100.00% | 9 | 100.00% |
bool e1000_has_link(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
bool link_active = false;
/* get_link_status is set on LSC (link status) interrupt or rx
* sequence error interrupt (except on intel ce4100).
* get_link_status will stay false until the
* e1000_check_for_link establishes link for copper adapters
* ONLY
*/
switch (hw->media_type) {
case e1000_media_type_copper:
if (hw->mac_type == e1000_ce4100)
hw->get_link_status = 1;
if (hw->get_link_status) {
e1000_check_for_link(hw);
link_active = !hw->get_link_status;
} else {
link_active = true;
}
break;
case e1000_media_type_fiber:
e1000_check_for_link(hw);
link_active = !!(er32(STATUS) & E1000_STATUS_LU);
break;
case e1000_media_type_internal_serdes:
e1000_check_for_link(hw);
link_active = hw->serdes_has_link;
break;
default:
break;
}
return link_active;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 106 | 87.60% | 1 | 50.00% |
| nicolas schichan | nicolas schichan | 15 | 12.40% | 1 | 50.00% |
| Total | 121 | 100.00% | 2 | 100.00% |
/**
* e1000_watchdog - work function
* @work: work struct contained inside adapter struct
**/
static void e1000_watchdog(struct work_struct *work)
{
struct e1000_adapter *adapter = container_of(work,
struct e1000_adapter,
watchdog_task.work);
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
struct e1000_tx_ring *txdr = adapter->tx_ring;
u32 link, tctl;
link = e1000_has_link(adapter);
if ((netif_carrier_ok(netdev)) && link)
goto link_up;
if (link) {
if (!netif_carrier_ok(netdev)) {
u32 ctrl;
bool txb2b = true;
/* update snapshot of PHY registers on LSC */
e1000_get_speed_and_duplex(hw,
&adapter->link_speed,
&adapter->link_duplex);
ctrl = er32(CTRL);
pr_info("%s NIC Link is Up %d Mbps %s, "
"Flow Control: %s\n",
netdev->name,
adapter->link_speed,
adapter->link_duplex == FULL_DUPLEX ?
"Full Duplex" : "Half Duplex",
((ctrl & E1000_CTRL_TFCE) && (ctrl &
E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
E1000_CTRL_RFCE) ? "RX" : ((ctrl &
E1000_CTRL_TFCE) ? "TX" : "None")));
/* adjust timeout factor according to speed/duplex */
adapter->tx_timeout_factor = 1;
switch (adapter->link_speed) {
case SPEED_10:
txb2b = false;
adapter->tx_timeout_factor = 16;
break;
case SPEED_100:
txb2b = false;
/* maybe add some timeout factor ? */
break;
}
/* enable transmits in the hardware */
tctl = er32(TCTL);
tctl |= E1000_TCTL_EN;
ew32(TCTL, tctl);
netif_carrier_on(netdev);
if (!test_bit(__E1000_DOWN, &adapter->flags))
schedule_delayed_work(&adapter->phy_info_task,
2 * HZ);
adapter->smartspeed = 0;
}
} else {
if (netif_carrier_ok(netdev)) {
adapter->link_speed = 0;
adapter->link_duplex = 0;
pr_info("%s NIC Link is Down\n",
netdev->name);
netif_carrier_off(netdev);
if (!test_bit(__E1000_DOWN, &adapter->flags))
schedule_delayed_work(&adapter->phy_info_task,
2 * HZ);
}
e1000_smartspeed(adapter);
}
link_up:
e1000_update_stats(adapter);
hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
adapter->tpt_old = adapter->stats.tpt;
hw->collision_delta = adapter->stats.colc - adapter->colc_old;
adapter->colc_old = adapter->stats.colc;
adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
adapter->gorcl_old = adapter->stats.gorcl;
adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
adapter->gotcl_old = adapter->stats.gotcl;
e1000_update_adaptive(hw);
if (!netif_carrier_ok(netdev)) {
if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
/* We've lost link, so the controller stops DMA,
* but we've got queued Tx work that's never going
* to get done, so reset controller to flush Tx.
* (Do the reset outside of interrupt context).
*/
adapter->tx_timeout_count++;
schedule_work(&adapter->reset_task);
/* exit immediately since reset is imminent */
return;
}
}
/* Simple mode for Interrupt Throttle Rate (ITR) */
if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) {
/* Symmetric Tx/Rx gets a reduced ITR=2000;
* Total asymmetrical Tx or Rx gets ITR=8000;
* everyone else is between 2000-8000.
*/
u32 goc = (adapter->gotcl + adapter->gorcl) / 10000;
u32 dif = (adapter->gotcl > adapter->gorcl ?
adapter->gotcl - adapter->gorcl :
adapter->gorcl - adapter->gotcl) / 10000;
u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
ew32(ITR, 1000000000 / (itr * 256));
}
/* Cause software interrupt to ensure rx ring is cleaned */
ew32(ICS, E1000_ICS_RXDMT0);
/* Force detection of hung controller every watchdog period */
adapter->detect_tx_hung = true;
/* Reschedule the task */
if (!test_bit(__E1000_DOWN, &adapter->flags))
schedule_delayed_work(&adapter->watchdog_task, 2 * HZ);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 173 | 27.12% | 6 | 17.14% |
| scott feldman | scott feldman | 100 | 15.67% | 4 | 11.43% |
| jeb cramer | jeb cramer | 93 | 14.58% | 2 | 5.71% |
| jeff garzik | jeff garzik | 89 | 13.95% | 1 | 2.86% |
| jeff kirsher | jeff kirsher | 70 | 10.97% | 6 | 17.14% |
| auke kok | auke kok | 56 | 8.78% | 3 | 8.57% |
| joe perches | joe perches | 24 | 3.76% | 3 | 8.57% |
| christopher goldfarb | christopher goldfarb | 15 | 2.35% | 2 | 5.71% |
| jeb j. cramer | jeb j. cramer | 7 | 1.10% | 1 | 2.86% |
| emil tantilov | emil tantilov | 5 | 0.78% | 2 | 5.71% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 4 | 0.63% | 3 | 8.57% |
| ganesh venkatesan | ganesh venkatesan | 1 | 0.16% | 1 | 2.86% |
| vladimir davydov | vladimir davydov | 1 | 0.16% | 1 | 2.86% |
| Total | 638 | 100.00% | 35 | 100.00% |
enum latency_range {
lowest_latency = 0,
low_latency = 1,
bulk_latency = 2,
latency_invalid = 255
};
/**
* e1000_update_itr - update the dynamic ITR value based on statistics
* @adapter: pointer to adapter
* @itr_setting: current adapter->itr
* @packets: the number of packets during this measurement interval
* @bytes: the number of bytes during this measurement interval
*
* Stores a new ITR value based on packets and byte
* counts during the last interrupt. The advantage of per interrupt
* computation is faster updates and more accurate ITR for the current
* traffic pattern. Constants in this function were computed
* based on theoretical maximum wire speed and thresholds were set based
* on testing data as well as attempting to minimize response time
* while increasing bulk throughput.
* this functionality is controlled by the InterruptThrottleRate module
* parameter (see e1000_param.c)
**/
static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
u16 itr_setting, int packets, int bytes)
{
unsigned int retval = itr_setting;
struct e1000_hw *hw = &adapter->hw;
if (unlikely(hw->mac_type < e1000_82540))
goto update_itr_done;
if (packets == 0)
goto update_itr_done;
switch (itr_setting) {
case lowest_latency:
/* jumbo frames get bulk treatment*/
if (bytes/packets > 8000)
retval = bulk_latency;
else if ((packets < 5) && (bytes > 512))
retval = low_latency;
break;
case low_latency: /* 50 usec aka 20000 ints/s */
if (bytes > 10000) {
/* jumbo frames need bulk latency setting */
if (bytes/packets > 8000)
retval = bulk_latency;
else if ((packets < 10) || ((bytes/packets) > 1200))
retval = bulk_latency;
else if ((packets > 35))
retval = lowest_latency;
} else if (bytes/packets > 2000)
retval = bulk_latency;
else if (packets <= 2 && bytes < 512)
retval = lowest_latency;
break;
case bulk_latency: /* 250 usec aka 4000 ints/s */
if (bytes > 25000) {
if (packets > 35)
retval = low_latency;
} else if (bytes < 6000) {
retval = low_latency;
}
break;
}
update_itr_done:
return retval;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 192 | 82.40% | 2 | 20.00% |
| alexey kuznetsov | alexey kuznetsov | 23 | 9.87% | 1 | 10.00% |
| herbert xu | herbert xu | 9 | 3.86% | 1 | 10.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 4 | 1.72% | 2 | 20.00% |
| ganesh venkatesan | ganesh venkatesan | 2 | 0.86% | 1 | 10.00% |
| scott feldman | scott feldman | 1 | 0.43% | 1 | 10.00% |
| joe perches | joe perches | 1 | 0.43% | 1 | 10.00% |
| jeff garzik | jeff garzik | 1 | 0.43% | 1 | 10.00% |
| Total | 233 | 100.00% | 10 | 100.00% |
static void e1000_set_itr(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u16 current_itr;
u32 new_itr = adapter->itr;
if (unlikely(hw->mac_type < e1000_82540))
return;
/* for non-gigabit speeds, just fix the interrupt rate at 4000 */
if (unlikely(adapter->link_speed != SPEED_1000)) {
current_itr = 0;
new_itr = 4000;
goto set_itr_now;
}
adapter->tx_itr = e1000_update_itr(adapter, adapter->tx_itr,
adapter->total_tx_packets,
adapter->total_tx_bytes);
/* conservative mode (itr 3) eliminates the lowest_latency setting */
if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
adapter->tx_itr = low_latency;
adapter->rx_itr = e1000_update_itr(adapter, adapter->rx_itr,
adapter->total_rx_packets,
adapter->total_rx_bytes);
/* conservative mode (itr 3) eliminates the lowest_latency setting */
if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
adapter->rx_itr = low_latency;
current_itr = max(adapter->rx_itr, adapter->tx_itr);
switch (current_itr) {
/* counts and packets in update_itr are dependent on these numbers */
case lowest_latency:
new_itr = 70000;
break;
case low_latency:
new_itr = 20000; /* aka hwitr = ~200 */
break;
case bulk_latency:
new_itr = 4000;
break;
default:
break;
}
set_itr_now:
if (new_itr != adapter->itr) {
/* this attempts to bias the interrupt rate towards Bulk
* by adding intermediate steps when interrupt rate is
* increasing
*/
new_itr = new_itr > adapter->itr ?
min(adapter->itr + (new_itr >> 2), new_itr) :
new_itr;
adapter->itr = new_itr;
ew32(ITR, 1000000000 / (new_itr * 256));
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 224 | 87.50% | 2 | 28.57% |
| alexey kuznetsov | alexey kuznetsov | 19 | 7.42% | 1 | 14.29% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 9 | 3.52% | 1 | 14.29% |
| joe perches | joe perches | 3 | 1.17% | 2 | 28.57% |
| jeff kirsher | jeff kirsher | 1 | 0.39% | 1 | 14.29% |
| Total | 256 | 100.00% | 7 | 100.00% |
#define E1000_TX_FLAGS_CSUM 0x00000001
#define E1000_TX_FLAGS_VLAN 0x00000002
#define E1000_TX_FLAGS_TSO 0x00000004
#define E1000_TX_FLAGS_IPV4 0x00000008
#define E1000_TX_FLAGS_NO_FCS 0x00000010
#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
#define E1000_TX_FLAGS_VLAN_SHIFT 16
static int e1000_tso(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring, struct sk_buff *skb,
__be16 protocol)
{
struct e1000_context_desc *context_desc;
struct e1000_tx_buffer *buffer_info;
unsigned int i;
u32 cmd_length = 0;
u16 ipcse = 0, tucse, mss;
u8 ipcss, ipcso, tucss, tucso, hdr_len;
if (skb_is_gso(skb)) {
int err;
err = skb_cow_head(skb, 0);
if (err < 0)
return err;
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
mss = skb_shinfo(skb)->gso_size;
if (protocol == htons(ETH_P_IP)) {
struct iphdr *iph = ip_hdr(skb);
iph->tot_len = 0;
iph->check = 0;
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
iph->daddr, 0,
IPPROTO_TCP,
0);
cmd_length = E1000_TXD_CMD_IP;
ipcse = skb_transport_offset(skb) - 1;
} else if (skb_is_gso_v6(skb)) {
ipv6_hdr(skb)->payload_len = 0;
tcp_hdr(skb)->check =
~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr,
0, IPPROTO_TCP, 0);
ipcse = 0;
}
ipcss = skb_network_offset(skb);
ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
tucss = skb_transport_offset(skb);
tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
tucse = 0;
cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
i = tx_ring->next_to_use;
context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
buffer_info = &tx_ring->buffer_info[i];
context_desc->lower_setup.ip_fields.ipcss = ipcss;
context_desc->lower_setup.ip_fields.ipcso = ipcso;
context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
context_desc->upper_setup.tcp_fields.tucss = tucss;
context_desc->upper_setup.tcp_fields.tucso = tucso;
context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
context_desc->cmd_and_length = cpu_to_le32(cmd_length);
buffer_info->time_stamp = jiffies;
buffer_info->next_to_watch = i;
if (++i == tx_ring->count)
i = 0;
tx_ring->next_to_use = i;
return true;
}
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| alexey kuznetsov | alexey kuznetsov | 228 | 46.72% | 1 | 4.55% |
| jesse brandeburg | jesse brandeburg | 72 | 14.75% | 2 | 9.09% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 67 | 13.73% | 2 | 9.09% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 45 | 9.22% | 6 | 27.27% |
| ganesh venkatesan | ganesh venkatesan | 21 | 4.30% | 1 | 4.55% |
| jeff kirsher | jeff kirsher | 16 | 3.28% | 1 | 4.55% |
| herbert xu | herbert xu | 13 | 2.66% | 2 | 9.09% |
| jeb cramer | jeb cramer | 8 | 1.64% | 1 | 4.55% |
| francois romieu | francois romieu | 6 | 1.23% | 1 | 4.55% |
| vlad yasevich | vlad yasevich | 5 | 1.02% | 1 | 4.55% |
| joe perches | joe perches | 5 | 1.02% | 2 | 9.09% |
| florian westphal | florian westphal | 1 | 0.20% | 1 | 4.55% |
| alexey dobriyan | alexey dobriyan | 1 | 0.20% | 1 | 4.55% |
| Total | 488 | 100.00% | 22 | 100.00% |
static bool e1000_tx_csum(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring, struct sk_buff *skb,
__be16 protocol)
{
struct e1000_context_desc *context_desc;
struct e1000_tx_buffer *buffer_info;
unsigned int i;
u8 css;
u32 cmd_len = E1000_TXD_CMD_DEXT;
if (skb->ip_summed != CHECKSUM_PARTIAL)
return false;
switch (protocol) {
case cpu_to_be16(ETH_P_IP):
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
cmd_len |= E1000_TXD_CMD_TCP;
break;
case cpu_to_be16(ETH_P_IPV6):
/* XXX not handling all IPV6 headers */
if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
cmd_len |= E1000_TXD_CMD_TCP;
break;
default:
if (unlikely(net_ratelimit()))
e_warn(drv, "checksum_partial proto=%x!\n",
skb->protocol);
break;
}
css = skb_checksum_start_offset(skb);
i = tx_ring->next_to_use;
buffer_info = &tx_ring->buffer_info[i];
context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
context_desc->lower_setup.ip_config = 0;
context_desc->upper_setup.tcp_fields.tucss = css;
context_desc->upper_setup.tcp_fields.tucso =
css + skb->csum_offset;
context_desc->upper_setup.tcp_fields.tucse = 0;
context_desc->tcp_seg_setup.data = 0;
context_desc->cmd_and_length = cpu_to_le32(cmd_len);
buffer_info->time_stamp = jiffies;
buffer_info->next_to_watch = i;
if (unlikely(++i == tx_ring->count))
i = 0;
tx_ring->next_to_use = i;
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 80 | 31.01% | 1 | 4.35% |
| david graham | david graham | 76 | 29.46% | 1 | 4.35% |
| christopher goldfarb | christopher goldfarb | 25 | 9.69% | 1 | 4.35% |
| jeff kirsher | jeff kirsher | 20 | 7.75% | 1 | 4.35% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 9 | 3.49% | 1 | 4.35% |
| jeb cramer | jeb cramer | 8 | 3.10% | 1 | 4.35% |
| bruce allan | bruce allan | 8 | 3.10% | 1 | 4.35% |
| ganesh venkatesan | ganesh venkatesan | 7 | 2.71% | 2 | 8.70% |
| jesse brandeburg | jesse brandeburg | 6 | 2.33% | 1 | 4.35% |
| emil tantilov | emil tantilov | 3 | 1.16% | 2 | 8.70% |
| vlad yasevich | vlad yasevich | 3 | 1.16% | 1 | 4.35% |
| joe perches | joe perches | 3 | 1.16% | 2 | 8.70% |
| harvey harrison | harvey harrison | 2 | 0.78% | 1 | 4.35% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 2 | 0.78% | 1 | 4.35% |
| herbert xu | herbert xu | 1 | 0.39% | 1 | 4.35% |
| michal miroslaw | michal miroslaw | 1 | 0.39% | 1 | 4.35% |
| florian westphal | florian westphal | 1 | 0.39% | 1 | 4.35% |
| scott feldman | scott feldman | 1 | 0.39% | 1 | 4.35% |
| alexey kuznetsov | alexey kuznetsov | 1 | 0.39% | 1 | 4.35% |
| patrick mchardy | patrick mchardy | 1 | 0.39% | 1 | 4.35% |
| Total | 258 | 100.00% | 23 | 100.00% |
#define E1000_MAX_TXD_PWR 12
#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
static int e1000_tx_map(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring,
struct sk_buff *skb, unsigned int first,
unsigned int max_per_txd, unsigned int nr_frags,
unsigned int mss)
{
struct e1000_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
struct e1000_tx_buffer *buffer_info;
unsigned int len = skb_headlen(skb);
unsigned int offset = 0, size, count = 0, i;
unsigned int f, bytecount, segs;
i = tx_ring->next_to_use;
while (len) {
buffer_info = &tx_ring->buffer_info[i];
size = min(len, max_per_txd);
/* Workaround for Controller erratum --
* descriptor for non-tso packet in a linear SKB that follows a
* tso gets written back prematurely before the data is fully
* DMA'd to the controller
*/
if (!skb->data_len && tx_ring->last_tx_tso &&
!skb_is_gso(skb)) {
tx_ring->last_tx_tso = false;
size -= 4;
}
/* Workaround for premature desc write-backs
* in TSO mode. Append 4-byte sentinel desc
*/
if (unlikely(mss && !nr_frags && size == len && size > 8))
size -= 4;
/* work-around for errata 10 and it applies
* to all controllers in PCI-X mode
* The fix is to make sure that the first descriptor of a
* packet is smaller than 2048 - 16 - 16 (or 2016) bytes
*/
if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
(size > 2015) && count == 0))
size = 2015;
/* Workaround for potential 82544 hang in PCI-X. Avoid
* terminating buffers within evenly-aligned dwords.
*/
if (unlikely(adapter->pcix_82544 &&
!((unsigned long)(skb->data + offset + size - 1) & 4) &&
size > 4))
size -= 4;
buffer_info->length = size;
/* set time_stamp *before* dma to help avoid a possible race */
buffer_info->time_stamp = jiffies;
buffer_info->mapped_as_page = false;
buffer_info->dma = dma_map_single(&pdev->dev,
skb->data + offset,
size, DMA_TO_DEVICE);
if (dma_mapping_error(&pdev->dev, buffer_info->dma))
goto dma_error;
buffer_info->next_to_watch = i;
len -= size;
offset += size;
count++;
if (len) {
i++;
if (unlikely(i == tx_ring->count))
i = 0;
}
}
for (f = 0; f < nr_frags; f++) {
const struct skb_frag_struct *frag;
frag = &skb_shinfo(skb)->frags[f];
len = skb_frag_size(frag);
offset = 0;
while (len) {
unsigned long bufend;
i++;
if (unlikely(i == tx_ring->count))
i = 0;
buffer_info = &tx_ring->buffer_info[i];
size = min(len, max_per_txd);
/* Workaround for premature desc write-backs
* in TSO mode. Append 4-byte sentinel desc
*/
if (unlikely(mss && f == (nr_frags-1) &&
size == len && size > 8))
size -= 4;
/* Workaround for potential 82544 hang in PCI-X.
* Avoid terminating buffers within evenly-aligned
* dwords.
*/
bufend = (unsigned long)
page_to_phys(skb_frag_page(frag));
bufend += offset + size - 1;
if (unlikely(adapter->pcix_82544 &&
!(bufend & 4) &&
size > 4))
size -= 4;
buffer_info->length = size;
buffer_info->time_stamp = jiffies;
buffer_info->mapped_as_page = true;
buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
offset, size, DMA_TO_DEVICE);
if (dma_mapping_error(&pdev->dev, buffer_info->dma))
goto dma_error;
buffer_info->next_to_watch = i;
len -= size;
offset += size;
count++;
}
}
segs = skb_shinfo(skb)->gso_segs ?: 1;
/* multiply data chunks by size of headers */
bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
tx_ring->buffer_info[i].skb = skb;
tx_ring->buffer_info[i].segs = segs;
tx_ring->buffer_info[i].bytecount = bytecount;
tx_ring->buffer_info[first].next_to_watch = i;
return count;
dma_error:
dev_err(&pdev->dev, "TX DMA map failed\n");
buffer_info->dma = 0;
if (count)
count--;
while (count--) {
if (i == 0)
i += tx_ring->count;
i--;
buffer_info = &tx_ring->buffer_info[i];
e1000_unmap_and_free_tx_resource(adapter, buffer_info);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| alexander duyck | alexander duyck | 156 | 21.46% | 2 | 5.71% |
| christopher goldfarb | christopher goldfarb | 129 | 17.74% | 1 | 2.86% |
| scott feldman | scott feldman | 106 | 14.58% | 4 | 11.43% |
| dean nelson | dean nelson | 58 | 7.98% | 1 | 2.86% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 42 | 5.78% | 3 | 8.57% |
| alexey kuznetsov | alexey kuznetsov | 41 | 5.64% | 1 | 2.86% |
| jeff kirsher | jeff kirsher | 38 | 5.23% | 3 | 8.57% |
| jesse brandeburg | jesse brandeburg | 29 | 3.99% | 4 | 11.43% |
| ian campbell | ian campbell | 27 | 3.71% | 1 | 2.86% |
| ganesh venkatesan | ganesh venkatesan | 25 | 3.44% | 3 | 8.57% |
| jeb cramer | jeb cramer | 24 | 3.30% | 2 | 5.71% |
| nicholas nunley | nicholas nunley | 17 | 2.34% | 1 | 2.86% |
| joe perches | joe perches | 10 | 1.38% | 1 | 2.86% |
| roel kluin | roel kluin | 9 | 1.24% | 1 | 2.86% |
| eric dumazet | eric dumazet | 7 | 0.96% | 2 | 5.71% |
| andrew morton | andrew morton | 4 | 0.55% | 1 | 2.86% |
| jeff garzik | jeff garzik | 2 | 0.28% | 1 | 2.86% |
| rusty russell | rusty russell | 1 | 0.14% | 1 | 2.86% |
| herbert xu | herbert xu | 1 | 0.14% | 1 | 2.86% |
| florian westphal | florian westphal | 1 | 0.14% | 1 | 2.86% |
| Total | 727 | 100.00% | 35 | 100.00% |
static void e1000_tx_queue(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring, int tx_flags,
int count)
{
struct e1000_tx_desc *tx_desc = NULL;
struct e1000_tx_buffer *buffer_info;
u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
unsigned int i;
if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
E1000_TXD_CMD_TSE;
txd_upper |= E1000_TXD_POPTS_TXSM << 8;
if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
txd_upper |= E1000_TXD_POPTS_IXSM << 8;
}
if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
txd_upper |= E1000_TXD_POPTS_TXSM << 8;
}
if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
txd_lower |= E1000_TXD_CMD_VLE;
txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
}
if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
txd_lower &= ~(E1000_TXD_CMD_IFCS);
i = tx_ring->next_to_use;
while (count--) {
buffer_info = &tx_ring->buffer_info[i];
tx_desc = E1000_TX_DESC(*tx_ring, i);
tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
tx_desc->lower.data =
cpu_to_le32(txd_lower | buffer_info->length);
tx_desc->upper.data = cpu_to_le32(txd_upper);
if (unlikely(++i == tx_ring->count))
i = 0;
}
tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
/* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
/* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only
* applicable for weak-ordered memory model archs,
* such as IA-64).
*/
wmb();
tx_ring->next_to_use = i;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| christopher goldfarb | christopher goldfarb | 105 | 37.23% | 2 | 12.50% |
| ben greear | ben greear | 40 | 14.18% | 1 | 6.25% |
| jeff garzik | jeff garzik | 38 | 13.48% | 1 | 6.25% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 26 | 9.22% | 2 | 12.50% |
| alexey kuznetsov | alexey kuznetsov | 21 | 7.45% | 1 | 6.25% |
| jeff kirsher | jeff kirsher | 18 | 6.38% | 2 | 12.50% |
| jeb cramer | jeb cramer | 15 | 5.32% | 2 | 12.50% |
| ganesh venkatesan | ganesh venkatesan | 12 | 4.26% | 1 | 6.25% |
| scott feldman | scott feldman | 5 | 1.77% | 2 | 12.50% |
| joe perches | joe perches | 1 | 0.35% | 1 | 6.25% |
| florian westphal | florian westphal | 1 | 0.35% | 1 | 6.25% |
| Total | 282 | 100.00% | 16 | 100.00% |
/* 82547 workaround to avoid controller hang in half-duplex environment.
* The workaround is to avoid queuing a large packet that would span
* the internal Tx FIFO ring boundary by notifying the stack to resend
* the packet at a later time. This gives the Tx FIFO an opportunity to
* flush all packets. When that occurs, we reset the Tx FIFO pointers
* to the beginning of the Tx FIFO.
*/
#define E1000_FIFO_HDR 0x10
#define E1000_82547_PAD_LEN 0x3E0
static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
struct sk_buff *skb)
{
u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
u32 skb_fifo_len = skb->len + E1000_FIFO_HDR;
skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR);
if (adapter->link_duplex != HALF_DUPLEX)
goto no_fifo_stall_required;
if (atomic_read(&adapter->tx_fifo_stall))
return 1;
if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
atomic_set(&adapter->tx_fifo_stall, 1);
return 1;
}
no_fifo_stall_required:
adapter->tx_fifo_head += skb_fifo_len;
if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
adapter->tx_fifo_head -= adapter->tx_fifo_size;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ganesh venkatesan | ganesh venkatesan | 81 | 65.85% | 1 | 12.50% |
| christopher goldfarb | christopher goldfarb | 18 | 14.63% | 1 | 12.50% |
| jeb cramer | jeb cramer | 15 | 12.20% | 2 | 25.00% |
| milind arun choudhary | milind arun choudhary | 3 | 2.44% | 1 | 12.50% |
| scott feldman | scott feldman | 2 | 1.63% | 1 | 12.50% |
| joe perches | joe perches | 2 | 1.63% | 1 | 12.50% |
| jeff garzik | jeff garzik | 2 | 1.63% | 1 | 12.50% |
| Total | 123 | 100.00% | 8 | 100.00% |
static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_tx_ring *tx_ring = adapter->tx_ring;
netif_stop_queue(netdev);
/* Herbert's original patch had:
* smp_mb__after_netif_stop_queue();
* but since that doesn't exist yet, just open code it.
*/
smp_mb();
/* We need to check again in a case another CPU has just
* made room available.
*/
if (likely(E1000_DESC_UNUSED(tx_ring) < size))
return -EBUSY;
/* A reprieve! */
netif_start_queue(netdev);
++adapter->restart_queue;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 42 | 57.53% | 3 | 27.27% |
| ganesh venkatesan | ganesh venkatesan | 12 | 16.44% | 2 | 18.18% |
| christopher goldfarb | christopher goldfarb | 8 | 10.96% | 1 | 9.09% |
| jeb cramer | jeb cramer | 6 | 8.22% | 2 | 18.18% |
| jeff kirsher | jeff kirsher | 2 | 2.74% | 1 | 9.09% |
| scott feldman | scott feldman | 2 | 2.74% | 1 | 9.09% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 1 | 1.37% | 1 | 9.09% |
| Total | 73 | 100.00% | 11 | 100.00% |
static int e1000_maybe_stop_tx(struct net_device *netdev,
struct e1000_tx_ring *tx_ring, int size)
{
if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
return 0;
return __e1000_maybe_stop_tx(netdev, size);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 31 | 73.81% | 1 | 33.33% |
| christopher goldfarb | christopher goldfarb | 7 | 16.67% | 1 | 33.33% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 4 | 9.52% | 1 | 33.33% |
| Total | 42 | 100.00% | 3 | 100.00% |
#define TXD_USE_COUNT(S, X) (((S) + ((1 << (X)) - 1)) >> (X))
static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
struct e1000_tx_ring *tx_ring;
unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
unsigned int tx_flags = 0;
unsigned int len = skb_headlen(skb);
unsigned int nr_frags;
unsigned int mss;
int count = 0;
int tso;
unsigned int f;
__be16 protocol = vlan_get_protocol(skb);
/* This goes back to the question of how to logically map a Tx queue
* to a flow. Right now, performance is impacted slightly negatively
* if using multiple Tx queues. If the stack breaks away from a
* single qdisc implementation, we can look at this again.
*/
tx_ring = adapter->tx_ring;
/* On PCI/PCI-X HW, if packet size is less than ETH_ZLEN,
* packets may get corrupted during padding by HW.
* To WA this issue, pad all small packets manually.
*/
if (eth_skb_pad(skb))
return NETDEV_TX_OK;
mss = skb_shinfo(skb)->gso_size;
/* The controller does a simple calculation to
* make sure there is enough room in the FIFO before
* initiating the DMA for each buffer. The calc is:
* 4 = ceil(buffer len/mss). To make sure we don't
* overrun the FIFO, adjust the max buffer len if mss
* drops.
*/
if (mss) {
u8 hdr_len;
max_per_txd = min(mss << 2, max_per_txd);
max_txd_pwr = fls(max_per_txd) - 1;
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
if (skb->data_len && hdr_len == len) {
switch (hw->mac_type) {
unsigned int pull_size;
case e1000_82544:
/* Make sure we have room to chop off 4 bytes,
* and that the end alignment will work out to
* this hardware's requirements
* NOTE: this is a TSO only workaround
* if end byte alignment not correct move us
* into the next dword
*/
if ((unsigned long)(skb_tail_pointer(skb) - 1)
& 4)
break;
/* fall through */
pull_size = min((unsigned int)4, skb->data_len);
if (!__pskb_pull_tail(skb, pull_size)) {
e_err(drv, "__pskb_pull_tail "
"failed.\n");
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
len = skb_headlen(skb);
break;
default:
/* do nothing */
break;
}
}
}
/* reserve a descriptor for the offload context */
if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
count++;
count++;
/* Controller Erratum workaround */
if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
count++;
count += TXD_USE_COUNT(len, max_txd_pwr);
if (adapter->pcix_82544)
count++;
/* work-around for errata 10 and it applies to all controllers
* in PCI-X mode, so add one more descriptor to the count
*/
if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
(len > 2015)))
count++;
nr_frags = skb_shinfo(skb)->nr_frags;
for (f = 0; f < nr_frags; f++)
count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]),
max_txd_pwr);
if (adapter->pcix_82544)
count += nr_frags;
/* need: count + 2 desc gap to keep tail from touching
* head, otherwise try next time
*/
if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2)))
return NETDEV_TX_BUSY;
if (unlikely((hw->mac_type == e1000_82547) &&
(e1000_82547_fifo_workaround(adapter, skb)))) {
netif_stop_queue(netdev);
if (!test_bit(__E1000_DOWN, &adapter->flags))
schedule_delayed_work(&adapter->fifo_stall_task, 1);
return NETDEV_TX_BUSY;
}
if (skb_vlan_tag_present(skb)) {
tx_flags |= E1000_TX_FLAGS_VLAN;
tx_flags |= (skb_vlan_tag_get(skb) <<
E1000_TX_FLAGS_VLAN_SHIFT);
}
first = tx_ring->next_to_use;
tso = e1000_tso(adapter, tx_ring, skb, protocol);
if (tso < 0) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
if (likely(tso)) {
if (likely(hw->mac_type != e1000_82544))
tx_ring->last_tx_tso = true;
tx_flags |= E1000_TX_FLAGS_TSO;
} else if (likely(e1000_tx_csum(adapter, tx_ring, skb, protocol)))
tx_flags |= E1000_TX_FLAGS_CSUM;
if (protocol == htons(ETH_P_IP))
tx_flags |= E1000_TX_FLAGS_IPV4;
if (unlikely(skb->no_fcs))
tx_flags |= E1000_TX_FLAGS_NO_FCS;
count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd,
nr_frags, mss);
if (count) {
/* The descriptors needed is higher than other Intel drivers
* due to a number of workarounds. The breakdown is below:
* Data descriptors: MAX_SKB_FRAGS + 1
* Context Descriptor: 1
* Keep head from touching tail: 2
* Workarounds: 3
*/
int desc_needed = MAX_SKB_FRAGS + 7;
netdev_sent_queue(netdev, skb->len);
skb_tx_timestamp(skb);
e1000_tx_queue(adapter, tx_ring, tx_flags, count);
/* 82544 potentially requires twice as many data descriptors
* in order to guarantee buffers don't end on evenly-aligned
* dwords
*/
if (adapter->pcix_82544)
desc_needed += MAX_SKB_FRAGS + 1;
/* Make sure there is space in the ring for the next send. */
e1000_maybe_stop_tx(netdev, tx_ring, desc_needed);
if (!skb->xmit_more ||
netif_xmit_stopped(netdev_get_tx_queue(netdev, 0))) {
writel(tx_ring->next_to_use, hw->hw_addr + tx_ring->tdt);
/* we need this if more than one processor can write to
* our tail at a time, it synchronizes IO on IA64/Altix
* systems
*/
mmiowb();
}
} else {
dev_kfree_skb_any(skb);
tx_ring->buffer_info[first].time_stamp = 0;
tx_ring->next_to_use = first;
}
return NETDEV_TX_OK;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 293 | 38.45% | 3 | 5.17% |
| jeff kirsher | jeff kirsher | 84 | 11.02% | 5 | 8.62% |
| alexander duyck | alexander duyck | 66 | 8.66% | 3 | 5.17% |
| christopher goldfarb | christopher goldfarb | 45 | 5.91% | 2 | 3.45% |
| jesse brandeburg | jesse brandeburg | 41 | 5.38% | 5 | 8.62% |
| florian westphal | florian westphal | 38 | 4.99% | 1 | 1.72% |
| ganesh venkatesan | ganesh venkatesan | 35 | 4.59% | 4 | 6.90% |
| herbert xu | herbert xu | 26 | 3.41% | 4 | 6.90% |
| joe perches | joe perches | 14 | 1.84% | 2 | 3.45% |
| jeb cramer | jeb cramer | 13 | 1.71% | 3 | 5.17% |
| ben greear | ben greear | 13 | 1.71% | 1 | 1.72% |
| vlad yasevich | vlad yasevich | 12 | 1.57% | 1 | 1.72% |
| eric dumazet | eric dumazet | 10 | 1.31% | 2 | 3.45% |
| tushar dave | tushar dave | 10 | 1.31% | 1 | 1.72% |
| otto estuardo solares cabrera | otto estuardo solares cabrera | 9 | 1.18% | 1 | 1.72% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 9 | 1.18% | 3 | 5.17% |
| alexey kuznetsov | alexey kuznetsov | 9 | 1.18% | 1 | 1.72% |
| scott feldman | scott feldman | 8 | 1.05% | 4 | 6.90% |
| jeff garzik | jeff garzik | 5 | 0.66% | 1 | 1.72% |
| willem de bruijn | willem de bruijn | 5 | 0.66% | 1 | 1.72% |
| david s. miller | david s. miller | 5 | 0.66% | 2 | 3.45% |
| emil tantilov | emil tantilov | 5 | 0.66% | 2 | 3.45% |
| jiri pirko | jiri pirko | 2 | 0.26% | 1 | 1.72% |
| alexey dobriyan | alexey dobriyan | 1 | 0.13% | 1 | 1.72% |
| auke kok | auke kok | 1 | 0.13% | 1 | 1.72% |
| rusty russell | rusty russell | 1 | 0.13% | 1 | 1.72% |
| stephen hemminger | stephen hemminger | 1 | 0.13% | 1 | 1.72% |
| patrick mchardy | patrick mchardy | 1 | 0.13% | 1 | 1.72% |
| Total | 762 | 100.00% | 58 | 100.00% |
#define NUM_REGS 38
/* 1 based count */
static void e1000_regdump(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 regs[NUM_REGS];
u32 *regs_buff = regs;
int i = 0;
static const char * const reg_name[] = {
"CTRL", "STATUS",
"RCTL", "RDLEN", "RDH", "RDT", "RDTR",
"TCTL", "TDBAL", "TDBAH", "TDLEN", "TDH", "TDT",
"TIDV", "TXDCTL", "TADV", "TARC0",
"TDBAL1", "TDBAH1", "TDLEN1", "TDH1", "TDT1",
"TXDCTL1", "TARC1",
"CTRL_EXT", "ERT", "RDBAL", "RDBAH",
"TDFH", "TDFT", "TDFHS", "TDFTS", "TDFPC",
"RDFH", "RDFT", "RDFHS", "RDFTS", "RDFPC"
};
regs_buff[0] = er32(CTRL);
regs_buff[1] = er32(STATUS);
regs_buff[2] = er32(RCTL);
regs_buff[3] = er32(RDLEN);
regs_buff[4] = er32(RDH);
regs_buff[5] = er32(RDT);
regs_buff[6] = er32(RDTR);
regs_buff[7] = er32(TCTL);
regs_buff[8] = er32(TDBAL);
regs_buff[9] = er32(TDBAH);
regs_buff[10] = er32(TDLEN);
regs_buff[11] = er32(TDH);
regs_buff[12] = er32(TDT);
regs_buff[13] = er32(TIDV);
regs_buff[14] = er32(TXDCTL);
regs_buff[15] = er32(TADV);
regs_buff[16] = er32(TARC0);
regs_buff[17] = er32(TDBAL1);
regs_buff[18] = er32(TDBAH1);
regs_buff[19] = er32(TDLEN1);
regs_buff[20] = er32(TDH1);
regs_buff[21] = er32(TDT1);
regs_buff[22] = er32(TXDCTL1);
regs_buff[23] = er32(TARC1);
regs_buff[24] = er32(CTRL_EXT);
regs_buff[25] = er32(ERT);
regs_buff[26] = er32(RDBAL0);
regs_buff[27] = er32(RDBAH0);
regs_buff[28] = er32(TDFH);
regs_buff[29] = er32(TDFT);
regs_buff[30] = er32(TDFHS);
regs_buff[31] = er32(TDFTS);
regs_buff[32] = er32(TDFPC);
regs_buff[33] = er32(RDFH);
regs_buff[34] = er32(RDFT);
regs_buff[35] = er32(RDFHS);
regs_buff[36] = er32(RDFTS);
regs_buff[37] = er32(RDFPC);
pr_info("Register dump\n");
for (i = 0; i < NUM_REGS; i++)
pr_info("%-15s %08x\n", reg_name[i], regs_buff[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| tushar dave | tushar dave | 537 | 100.00% | 2 | 100.00% |
| Total | 537 | 100.00% | 2 | 100.00% |
/*
* e1000_dump: Print registers, tx ring and rx ring
*/
static void e1000_dump(struct e1000_adapter *adapter)
{
/* this code doesn't handle multiple rings */
struct e1000_tx_ring *tx_ring = adapter->tx_ring;
struct e1000_rx_ring *rx_ring = adapter->rx_ring;
int i;
if (!netif_msg_hw(adapter))
return;
/* Print Registers */
e1000_regdump(adapter);
/* transmit dump */
pr_info("TX Desc ring0 dump\n");
/* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
*
* Legacy Transmit Descriptor
* +--------------------------------------------------------------+
* 0 | Buffer Address [63:0] (Reserved on Write Back) |
* +--------------------------------------------------------------+
* 8 | Special | CSS | Status | CMD | CSO | Length |
* +--------------------------------------------------------------+
* 63 48 47 36 35 32 31 24 23 16 15 0
*
* Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
* 63 48 47 40 39 32 31 16 15 8 7 0
* +----------------------------------------------------------------+
* 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
* +----------------------------------------------------------------+
* 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
* +----------------------------------------------------------------+
* 63 48 47 40 39 36 35 32 31 24 23 20 19 0
*
* Extended Data Descriptor (DTYP=0x1)
* +----------------------------------------------------------------+
* 0 | Buffer Address [63:0] |
* +----------------------------------------------------------------+
* 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
* +----------------------------------------------------------------+
* 63 48 47 40 39 36 35 32 31 24 23 20 19 0
*/
pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestmp bi->skb\n");
pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestmp bi->skb\n");
if (!netif_msg_tx_done(adapter))
goto rx_ring_summary;
for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
struct e1000_tx_buffer *buffer_info = &tx_ring->buffer_info[i];
struct my_u { __le64 a; __le64 b; };
struct my_u *u = (struct my_u *)tx_desc;
const char *type;
if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
type = "NTC/U";
else if (i == tx_ring->next_to_use)
type = "NTU";
else if (i == tx_ring->next_to_clean)
type = "NTC";
else
type = "";
pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p %s\n",
((le64_to_cpu(u->b) & (1<<20)) ? 'd' : 'c'), i,
le64_to_cpu(u->a), le64_to_cpu(u->b),
(u64)buffer_info->dma, buffer_info->length,
buffer_info->next_to_watch,
(u64)buffer_info->time_stamp, buffer_info->skb, type);
}
rx_ring_summary:
/* receive dump */
pr_info("\nRX Desc ring dump\n");
/* Legacy Receive Descriptor Format
*
* +-----------------------------------------------------+
* | Buffer Address [63:0] |
* +-----------------------------------------------------+
* | VLAN Tag | Errors | Status 0 | Packet csum | Length |
* +-----------------------------------------------------+
* 63 48 47 40 39 32 31 16 15 0
*/
pr_info("R[desc] [address 63:0 ] [vl er S cks ln] [bi->dma ] [bi->skb]\n");
if (!netif_msg_rx_status(adapter))
goto exit;
for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
struct e1000_rx_desc *rx_desc = E1000_RX_DESC(*rx_ring, i);
struct e1000_rx_buffer *buffer_info = &rx_ring->buffer_info[i];
struct my_u { __le64 a; __le64 b; };
struct my_u *u = (struct my_u *)rx_desc;
const char *type;
if (i == rx_ring->next_to_use)
type = "NTU";
else if (i == rx_ring->next_to_clean)
type = "NTC";
else
type = "";
pr_info("R[0x%03X] %016llX %016llX %016llX %p %s\n",
i, le64_to_cpu(u->a), le64_to_cpu(u->b),
(u64)buffer_info->dma, buffer_info->rxbuf.data, type);
} /* for */
/* dump the descriptor caches */
/* rx */
pr_info("Rx descriptor cache in 64bit format\n");
for (i = 0x6000; i <= 0x63FF ; i += 0x10) {
pr_info("R%04X: %08X|%08X %08X|%08X\n",
i,
readl(adapter->hw.hw_addr + i+4),
readl(adapter->hw.hw_addr + i),
readl(adapter->hw.hw_addr + i+12),
readl(adapter->hw.hw_addr + i+8));
}
/* tx */
pr_info("Tx descriptor cache in 64bit format\n");
for (i = 0x7000; i <= 0x73FF ; i += 0x10) {
pr_info("T%04X: %08X|%08X %08X|%08X\n",
i,
readl(adapter->hw.hw_addr + i+4),
readl(adapter->hw.hw_addr + i),
readl(adapter->hw.hw_addr + i+12),
readl(adapter->hw.hw_addr + i+8));
}
exit:
return;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| tushar dave | tushar dave | 592 | 98.18% | 2 | 28.57% |
| florian westphal | florian westphal | 5 | 0.83% | 3 | 42.86% |
| andrei emeltchenko | andrei emeltchenko | 4 | 0.66% | 1 | 14.29% |
| jeff kirsher | jeff kirsher | 2 | 0.33% | 1 | 14.29% |
| Total | 603 | 100.00% | 7 | 100.00% |
/**
* e1000_tx_timeout - Respond to a Tx Hang
* @netdev: network interface device structure
**/
static void e1000_tx_timeout(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
/* Do the reset outside of interrupt context */
adapter->tx_timeout_count++;
schedule_work(&adapter->reset_task);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 23 | 65.71% | 1 | 33.33% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 8 | 22.86% | 1 | 33.33% |
| jeff kirsher | jeff kirsher | 4 | 11.43% | 1 | 33.33% |
| Total | 35 | 100.00% | 3 | 100.00% |
static void e1000_reset_task(struct work_struct *work)
{
struct e1000_adapter *adapter =
container_of(work, struct e1000_adapter, reset_task);
e_err(drv, "Reset adapter\n");
e1000_reinit_locked(adapter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 15 | 39.47% | 2 | 28.57% |
| david howells | david howells | 9 | 23.68% | 1 | 14.29% |
| tushar dave | tushar dave | 7 | 18.42% | 1 | 14.29% |
| jesse brandeburg | jesse brandeburg | 5 | 13.16% | 1 | 14.29% |
| vladimir davydov | vladimir davydov | 1 | 2.63% | 1 | 14.29% |
| jeff kirsher | jeff kirsher | 1 | 2.63% | 1 | 14.29% |
| Total | 38 | 100.00% | 7 | 100.00% |
/**
* e1000_get_stats - Get System Network Statistics
* @netdev: network interface device structure
*
* Returns the address of the device statistics structure.
* The statistics are actually updated from the watchdog.
**/
static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
{
/* only return the current stats */
return &netdev->stats;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 10 | 50.00% | 1 | 20.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 4 | 20.00% | 1 | 20.00% |
| jeff garzik | jeff garzik | 3 | 15.00% | 1 | 20.00% |
| ajit khaparde | ajit khaparde | 2 | 10.00% | 1 | 20.00% |
| jeff kirsher | jeff kirsher | 1 | 5.00% | 1 | 20.00% |
| Total | 20 | 100.00% | 5 | 100.00% |
/**
* e1000_change_mtu - Change the Maximum Transfer Unit
* @netdev: network interface device structure
* @new_mtu: new value for maximum frame size
*
* Returns 0 on success, negative on failure
**/
static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
/* Adapter-specific max frame size limits. */
switch (hw->mac_type) {
case e1000_undefined ... e1000_82542_rev2_1:
if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) {
e_err(probe, "Jumbo Frames not supported.\n");
return -EINVAL;
}
break;
default:
/* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
break;
}
while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
msleep(1);
/* e1000_down has a dependency on max_frame_size */
hw->max_frame_size = max_frame;
if (netif_running(netdev)) {
/* prevent buffers from being reallocated */
adapter->alloc_rx_buf = e1000_alloc_dummy_rx_buffers;
e1000_down(adapter);
}
/* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
* means we reserve 2 more, this pushes us to allocate from the next
* larger slab size.
* i.e. RXBUFFER_2048 --> size-4096 slab
* however with the new *_jumbo_rx* routines, jumbo receives will use
* fragmented skbs
*/
if (max_frame <= E1000_RXBUFFER_2048)
adapter->rx_buffer_len = E1000_RXBUFFER_2048;
else
#if (PAGE_SIZE >= E1000_RXBUFFER_16384)
adapter->rx_buffer_len = E1000_RXBUFFER_16384;
#elif (PAGE_SIZE >= E1000_RXBUFFER_4096)
adapter->rx_buffer_len = PAGE_SIZE;
#endif
/* adjust allocation if LPE protects us, and we aren't using SBP */
if (!hw->tbi_compatibility_on &&
((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) ||
(max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
pr_info("%s changing MTU from %d to %d\n",
netdev->name, netdev->mtu, new_mtu);
netdev->mtu = new_mtu;
if (netif_running(netdev))
e1000_up(adapter);
else
e1000_reset(adapter);
clear_bit(__E1000_RESETTING, &adapter->flags);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 93 | 36.47% | 3 | 13.04% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 53 | 20.78% | 3 | 13.04% |
| jeff kirsher | jeff kirsher | 40 | 15.69% | 6 | 26.09% |
| auke kok | auke kok | 20 | 7.84% | 1 | 4.35% |
| jeff garzik | jeff garzik | 14 | 5.49% | 1 | 4.35% |
| joe perches | joe perches | 13 | 5.10% | 1 | 4.35% |
| sabrina dubroca | sabrina dubroca | 9 | 3.53% | 1 | 4.35% |
| emil tantilov | emil tantilov | 5 | 1.96% | 2 | 8.70% |
| herbert xu | herbert xu | 2 | 0.78% | 1 | 4.35% |
| jarod wilson | jarod wilson | 2 | 0.78% | 1 | 4.35% |
| bruce allan | bruce allan | 2 | 0.78% | 1 | 4.35% |
| jeb cramer | jeb cramer | 1 | 0.39% | 1 | 4.35% |
| christopher goldfarb | christopher goldfarb | 1 | 0.39% | 1 | 4.35% |
| Total | 255 | 100.00% | 23 | 100.00% |
/**
* e1000_update_stats - Update the board statistics counters
* @adapter: board private structure
**/
void e1000_update_stats(struct e1000_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct e1000_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
unsigned long flags;
u16 phy_tmp;
#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
/* Prevent stats update while adapter is being reset, or if the pci
* connection is down.
*/
if (adapter->link_speed == 0)
return;
if (pci_channel_offline(pdev))
return;
spin_lock_irqsave(&adapter->stats_lock, flags);
/* these counters are modified from e1000_tbi_adjust_stats,
* called from the interrupt context, so they must only
* be written while holding adapter->stats_lock
*/
adapter->stats.crcerrs += er32(CRCERRS);
adapter->stats.gprc += er32(GPRC);
adapter->stats.gorcl += er32(GORCL);
adapter->stats.gorch += er32(GORCH);
adapter->stats.bprc += er32(BPRC);
adapter->stats.mprc += er32(MPRC);
adapter->stats.roc += er32(ROC);
adapter->stats.prc64 += er32(PRC64);
adapter->stats.prc127 += er32(PRC127);
adapter->stats.prc255 += er32(PRC255);
adapter->stats.prc511 += er32(PRC511);
adapter->stats.prc1023 += er32(PRC1023);
adapter->stats.prc1522 += er32(PRC1522);
adapter->stats.symerrs += er32(SYMERRS);
adapter->stats.mpc += er32(MPC);
adapter->stats.scc += er32(SCC);
adapter->stats.ecol += er32(ECOL);
adapter->stats.mcc += er32(MCC);
adapter->stats.latecol += er32(LATECOL);
adapter->stats.dc += er32(DC);
adapter->stats.sec += er32(SEC);
adapter->stats.rlec += er32(RLEC);
adapter->stats.xonrxc += er32(XONRXC);
adapter->stats.xontxc += er32(XONTXC);
adapter->stats.xoffrxc += er32(XOFFRXC);
adapter->stats.xofftxc += er32(XOFFTXC);
adapter->stats.fcruc += er32(FCRUC);
adapter->stats.gptc += er32(GPTC);
adapter->stats.gotcl += er32(GOTCL);
adapter->stats.gotch += er32(GOTCH);
adapter->stats.rnbc += er32(RNBC);
adapter->stats.ruc += er32(RUC);
adapter->stats.rfc += er32(RFC);
adapter->stats.rjc += er32(RJC);
adapter->stats.torl += er32(TORL);
adapter->stats.torh += er32(TORH);
adapter->stats.totl += er32(TOTL);
adapter->stats.toth += er32(TOTH);
adapter->stats.tpr += er32(TPR);
adapter->stats.ptc64 += er32(PTC64);
adapter->stats.ptc127 += er32(PTC127);
adapter->stats.ptc255 += er32(PTC255);
adapter->stats.ptc511 += er32(PTC511);
adapter->stats.ptc1023 += er32(PTC1023);
adapter->stats.ptc1522 += er32(PTC1522);
adapter->stats.mptc += er32(MPTC);
adapter->stats.bptc += er32(BPTC);
/* used for adaptive IFS */
hw->tx_packet_delta = er32(TPT);
adapter->stats.tpt += hw->tx_packet_delta;
hw->collision_delta = er32(COLC);
adapter->stats.colc += hw->collision_delta;
if (hw->mac_type >= e1000_82543) {
adapter->stats.algnerrc += er32(ALGNERRC);
adapter->stats.rxerrc += er32(RXERRC);
adapter->stats.tncrs += er32(TNCRS);
adapter->stats.cexterr += er32(CEXTERR);
adapter->stats.tsctc += er32(TSCTC);
adapter->stats.tsctfc += er32(TSCTFC);
}
/* Fill out the OS statistics structure */
netdev->stats.multicast = adapter->stats.mprc;
netdev->stats.collisions = adapter->stats.colc;
/* Rx Errors */
/* RLEC on some newer hardware can be incorrect so build
* our own version based on RUC and ROC
*/
netdev->stats.rx_errors = adapter->stats.rxerrc +
adapter->stats.crcerrs + adapter->stats.algnerrc +
adapter->stats.ruc + adapter->stats.roc +
adapter->stats.cexterr;
adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
netdev->stats.rx_length_errors = adapter->stats.rlerrc;
netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
netdev->stats.rx_missed_errors = adapter->stats.mpc;
/* Tx Errors */
adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
netdev->stats.tx_errors = adapter->stats.txerrc;
netdev->stats.tx_aborted_errors = adapter->stats.ecol;
netdev->stats.tx_window_errors = adapter->stats.latecol;
netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
if (hw->bad_tx_carr_stats_fd &&
adapter->link_duplex == FULL_DUPLEX) {
netdev->stats.tx_carrier_errors = 0;
adapter->stats.tncrs = 0;
}
/* Tx Dropped needs to be maintained elsewhere */
/* Phy Stats */
if (hw->media_type == e1000_media_type_copper) {
if ((adapter->link_speed == SPEED_1000) &&
(!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
adapter->phy_stats.idle_errors += phy_tmp;
}
if ((hw->mac_type <= e1000_82546) &&
(hw->phy_type == e1000_phy_m88) &&
!e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
adapter->phy_stats.receive_errors += phy_tmp;
}
/* Management Stats */
if (hw->has_smbus) {
adapter->stats.mgptc += er32(MGTPTC);
adapter->stats.mgprc += er32(MGTPRC);
adapter->stats.mgpdc += er32(MGTPDC);
}
spin_unlock_irqrestore(&adapter->stats_lock, flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 689 | 63.80% | 3 | 8.33% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 137 | 12.69% | 4 | 11.11% |
| joe perches | joe perches | 61 | 5.65% | 3 | 8.33% |
| christopher goldfarb | christopher goldfarb | 49 | 4.54% | 3 | 8.33% |
| ajit khaparde | ajit khaparde | 33 | 3.06% | 1 | 2.78% |
| jeff kirsher | jeff kirsher | 26 | 2.41% | 6 | 16.67% |
| jesse brandeburg | jesse brandeburg | 20 | 1.85% | 3 | 8.33% |
| linas vepstas | linas vepstas | 17 | 1.57% | 2 | 5.56% |
| auke kok | auke kok | 15 | 1.39% | 3 | 8.33% |
| scott feldman | scott feldman | 13 | 1.20% | 2 | 5.56% |
| mitch a williams | mitch a williams | 12 | 1.11% | 2 | 5.56% |
| bruce allan | bruce allan | 3 | 0.28% | 1 | 2.78% |
| david s. miller | david s. miller | 2 | 0.19% | 1 | 2.78% |
| stephen hemminger | stephen hemminger | 2 | 0.19% | 1 | 2.78% |
| masatake yamato | masatake yamato | 1 | 0.09% | 1 | 2.78% |
| Total | 1080 | 100.00% | 36 | 100.00% |
/**
* e1000_intr - Interrupt Handler
* @irq: interrupt number
* @data: pointer to a network interface device structure
**/
static irqreturn_t e1000_intr(int irq, void *data)
{
struct net_device *netdev = data;
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
u32 icr = er32(ICR);
if (unlikely((!icr)))
return IRQ_NONE; /* Not our interrupt */
/* we might have caused the interrupt, but the above
* read cleared it, and just in case the driver is
* down there is nothing to do so return handled
*/
if (unlikely(test_bit(__E1000_DOWN, &adapter->flags)))
return IRQ_HANDLED;
if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
hw->get_link_status = 1;
/* guard against interrupt when we're going down */
if (!test_bit(__E1000_DOWN, &adapter->flags))
schedule_delayed_work(&adapter->watchdog_task, 1);
}
/* disable interrupts, without the synchronize_irq bit */
ew32(IMC, ~0);
E1000_WRITE_FLUSH();
if (likely(napi_schedule_prep(&adapter->napi))) {
adapter->total_tx_bytes = 0;
adapter->total_tx_packets = 0;
adapter->total_rx_bytes = 0;
adapter->total_rx_packets = 0;
__napi_schedule(&adapter->napi);
} else {
/* this really should not happen! if it does it is basically a
* bug, but not a hard error, so enable ints and continue
*/
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_enable(adapter);
}
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 107 | 50.95% | 3 | 18.75% |
| jesse brandeburg | jesse brandeburg | 68 | 32.38% | 6 | 37.50% |
| auke kok | auke kok | 15 | 7.14% | 1 | 6.25% |
| stephen hemminger | stephen hemminger | 8 | 3.81% | 1 | 6.25% |
| joe perches | joe perches | 4 | 1.90% | 2 | 12.50% |
| francois romieu | francois romieu | 4 | 1.90% | 1 | 6.25% |
| jeff kirsher | jeff kirsher | 2 | 0.95% | 1 | 6.25% |
| ben hutchings | ben hutchings | 2 | 0.95% | 1 | 6.25% |
| Total | 210 | 100.00% | 16 | 100.00% |
/**
* e1000_clean - NAPI Rx polling callback
* @adapter: board private structure
**/
static int e1000_clean(struct napi_struct *napi, int budget)
{
struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
napi);
int tx_clean_complete = 0, work_done = 0;
tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]);
adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget);
if (!tx_clean_complete)
work_done = budget;
/* If budget not fully consumed, exit the polling mode */
if (work_done < budget) {
if (likely(adapter->itr_setting & 3))
e1000_set_itr(adapter);
napi_complete_done(napi, work_done);
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_enable(adapter);
}
return work_done;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 42 | 31.11% | 2 | 15.38% |
| jesse brandeburg | jesse brandeburg | 35 | 25.93% | 4 | 30.77% |
| francois romieu | francois romieu | 19 | 14.07% | 1 | 7.69% |
| david s. miller | david s. miller | 14 | 10.37% | 2 | 15.38% |
| jeff kirsher | jeff kirsher | 13 | 9.63% | 1 | 7.69% |
| stephen hemminger | stephen hemminger | 10 | 7.41% | 1 | 7.69% |
| auke kok | auke kok | 1 | 0.74% | 1 | 7.69% |
| alexander duyck | alexander duyck | 1 | 0.74% | 1 | 7.69% |
| Total | 135 | 100.00% | 13 | 100.00% |
/**
* e1000_clean_tx_irq - Reclaim resources after transmit completes
* @adapter: board private structure
**/
static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring)
{
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
struct e1000_tx_desc *tx_desc, *eop_desc;
struct e1000_tx_buffer *buffer_info;
unsigned int i, eop;
unsigned int count = 0;
unsigned int total_tx_bytes = 0, total_tx_packets = 0;
unsigned int bytes_compl = 0, pkts_compl = 0;
i = tx_ring->next_to_clean;
eop = tx_ring->buffer_info[i].next_to_watch;
eop_desc = E1000_TX_DESC(*tx_ring, eop);
while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
(count < tx_ring->count)) {
bool cleaned = false;
dma_rmb(); /* read buffer_info after eop_desc */
for ( ; !cleaned; count++) {
tx_desc = E1000_TX_DESC(*tx_ring, i);
buffer_info = &tx_ring->buffer_info[i];
cleaned = (i == eop);
if (cleaned) {
total_tx_packets += buffer_info->segs;
total_tx_bytes += buffer_info->bytecount;
if (buffer_info->skb) {
bytes_compl += buffer_info->skb->len;
pkts_compl++;
}
}
e1000_unmap_and_free_tx_resource(adapter, buffer_info);
tx_desc->upper.data = 0;
if (unlikely(++i == tx_ring->count))
i = 0;
}
eop = tx_ring->buffer_info[i].next_to_watch;
eop_desc = E1000_TX_DESC(*tx_ring, eop);
}
/* Synchronize with E1000_DESC_UNUSED called from e1000_xmit_frame,
* which will reuse the cleaned buffers.
*/
smp_store_release(&tx_ring->next_to_clean, i);
netdev_completed_queue(netdev, pkts_compl, bytes_compl);
#define TX_WAKE_THRESHOLD 32
if (unlikely(count && netif_carrier_ok(netdev) &&
E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
/* Make sure that anybody stopping the queue after this
* sees the new next_to_clean.
*/
smp_mb();
if (netif_queue_stopped(netdev) &&
!(test_bit(__E1000_DOWN, &adapter->flags))) {
netif_wake_queue(netdev);
++adapter->restart_queue;
}
}
if (adapter->detect_tx_hung) {
/* Detect a transmit hang in hardware, this serializes the
* check with the clearing of time_stamp and movement of i
*/
adapter->detect_tx_hung = false;
if (tx_ring->buffer_info[eop].time_stamp &&
time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
(adapter->tx_timeout_factor * HZ)) &&
!(er32(STATUS) & E1000_STATUS_TXOFF)) {
/* detected Tx unit hang */
e_err(drv, "Detected Tx Unit Hang\n"
" Tx Queue <%lu>\n"
" TDH <%x>\n"
" TDT <%x>\n"
" next_to_use <%x>\n"
" next_to_clean <%x>\n"
"buffer_info[next_to_clean]\n"
" time_stamp <%lx>\n"
" next_to_watch <%x>\n"
" jiffies <%lx>\n"
" next_to_watch.status <%x>\n",
(unsigned long)(tx_ring - adapter->tx_ring),
readl(hw->hw_addr + tx_ring->tdh),
readl(hw->hw_addr + tx_ring->tdt),
tx_ring->next_to_use,
tx_ring->next_to_clean,
tx_ring->buffer_info[eop].time_stamp,
eop,
jiffies,
eop_desc->upper.fields.status);
e1000_dump(adapter);
netif_stop_queue(netdev);
}
}
adapter->total_tx_bytes += total_tx_bytes;
adapter->total_tx_packets += total_tx_packets;
netdev->stats.tx_bytes += total_tx_bytes;
netdev->stats.tx_packets += total_tx_packets;
return count < tx_ring->count;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 260 | 48.51% | 3 | 7.50% |
| jesse brandeburg | jesse brandeburg | 78 | 14.55% | 7 | 17.50% |
| otto estuardo solares cabrera | otto estuardo solares cabrera | 38 | 7.09% | 1 | 2.50% |
| auke kok | auke kok | 31 | 5.78% | 2 | 5.00% |
| jeff kirsher | jeff kirsher | 30 | 5.60% | 6 | 15.00% |
| alexander duyck | alexander duyck | 19 | 3.54% | 3 | 7.50% |
| jeff garzik | jeff garzik | 17 | 3.17% | 2 | 5.00% |
| joe perches | joe perches | 16 | 2.99% | 2 | 5.00% |
| scott feldman | scott feldman | 7 | 1.31% | 2 | 5.00% |
| jeb j. cramer | jeb j. cramer | 6 | 1.12% | 1 | 2.50% |
| dmitriy vyukov | dmitriy vyukov | 6 | 1.12% | 1 | 2.50% |
| tushar dave | tushar dave | 5 | 0.93% | 1 | 2.50% |
| ganesh venkatesan | ganesh venkatesan | 5 | 0.93% | 1 | 2.50% |
| christopher goldfarb | christopher goldfarb | 4 | 0.75% | 1 | 2.50% |
| ajit khaparde | ajit khaparde | 4 | 0.75% | 1 | 2.50% |
| dean nelson | dean nelson | 4 | 0.75% | 1 | 2.50% |
| emil tantilov | emil tantilov | 3 | 0.56% | 2 | 5.00% |
| jeb cramer | jeb cramer | 2 | 0.37% | 2 | 5.00% |
| florian westphal | florian westphal | 1 | 0.19% | 1 | 2.50% |
| Total | 536 | 100.00% | 40 | 100.00% |
/**
* e1000_rx_checksum - Receive Checksum Offload for 82543
* @adapter: board private structure
* @status_err: receive descriptor status and error fields
* @csum: receive descriptor csum field
* @sk_buff: socket buffer with received data
**/
static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
u32 csum, struct sk_buff *skb)
{
struct e1000_hw *hw = &adapter->hw;
u16 status = (u16)status_err;
u8 errors = (u8)(status_err >> 24);
skb_checksum_none_assert(skb);
/* 82543 or newer only */
if (unlikely(hw->mac_type < e1000_82543))
return;
/* Ignore Checksum bit is set */
if (unlikely(status & E1000_RXD_STAT_IXSM))
return;
/* TCP/UDP checksum error bit is set */
if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
/* let the stack verify checksum errors */
adapter->hw_csum_err++;
return;
}
/* TCP/UDP Checksum has not been calculated */
if (!(status & E1000_RXD_STAT_TCPCS))
return;
/* It must be a TCP or UDP packet with a valid checksum */
if (likely(status & E1000_RXD_STAT_TCPCS)) {
/* TCP checksum is good */
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
adapter->hw_csum_good++;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 88 | 65.19% | 1 | 14.29% |
| jeb cramer | jeb cramer | 22 | 16.30% | 1 | 14.29% |
| joe perches | joe perches | 17 | 12.59% | 2 | 28.57% |
| scott feldman | scott feldman | 5 | 3.70% | 2 | 28.57% |
| eric dumazet | eric dumazet | 3 | 2.22% | 1 | 14.29% |
| Total | 135 | 100.00% | 7 | 100.00% |
/**
* e1000_consume_page - helper function for jumbo Rx path
**/
static void e1000_consume_page(struct e1000_rx_buffer *bi, struct sk_buff *skb,
u16 length)
{
bi->rxbuf.page = NULL;
skb->len += length;
skb->data_len += length;
skb->truesize += PAGE_SIZE;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 29 | 64.44% | 1 | 12.50% |
| francois romieu | francois romieu | 8 | 17.78% | 1 | 12.50% |
| florian westphal | florian westphal | 3 | 6.67% | 2 | 25.00% |
| jeff garzik | jeff garzik | 2 | 4.44% | 1 | 12.50% |
| joe perches | joe perches | 2 | 4.44% | 2 | 25.00% |
| eric dumazet | eric dumazet | 1 | 2.22% | 1 | 12.50% |
| Total | 45 | 100.00% | 8 | 100.00% |
/**
* e1000_receive_skb - helper function to handle rx indications
* @adapter: board private structure
* @status: descriptor status field as written by hardware
* @vlan: descriptor vlan field as written by hardware (no le/be conversion)
* @skb: pointer to sk_buff to be indicated to stack
*/
static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status,
__le16 vlan, struct sk_buff *skb)
{
skb->protocol = eth_type_trans(skb, adapter->netdev);
if (status & E1000_RXD_STAT_VP) {
u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
}
napi_gro_receive(&adapter->napi, skb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 60 | 80.00% | 2 | 50.00% |
| jiri pirko | jiri pirko | 10 | 13.33% | 1 | 25.00% |
| patrick mchardy | patrick mchardy | 5 | 6.67% | 1 | 25.00% |
| Total | 75 | 100.00% | 4 | 100.00% |
/**
* e1000_tbi_adjust_stats
* @hw: Struct containing variables accessed by shared code
* @frame_len: The length of the frame in question
* @mac_addr: The Ethernet destination address of the frame in question
*
* Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT
*/
static void e1000_tbi_adjust_stats(struct e1000_hw *hw,
struct e1000_hw_stats *stats,
u32 frame_len, const u8 *mac_addr)
{
u64 carry_bit;
/* First adjust the frame length. */
frame_len--;
/* We need to adjust the statistics counters, since the hardware
* counters overcount this packet as a CRC error and undercount
* the packet as a good packet
*/
/* This packet should not be counted as a CRC error. */
stats->crcerrs--;
/* This packet does count as a Good Packet Received. */
stats->gprc++;
/* Adjust the Good Octets received counters */
carry_bit = 0x80000000 & stats->gorcl;
stats->gorcl += frame_len;
/* If the high bit of Gorcl (the low 32 bits of the Good Octets
* Received Count) was one before the addition,
* AND it is zero after, then we lost the carry out,
* need to add one to Gorch (Good Octets Received Count High).
* This could be simplified if all environments supported
* 64-bit integers.
*/
if (carry_bit && ((stats->gorcl & 0x80000000) == 0))
stats->gorch++;
/* Is this a broadcast or multicast? Check broadcast first,
* since the test for a multicast frame will test positive on
* a broadcast frame.
*/
if (is_broadcast_ether_addr(mac_addr))
stats->bprc++;
else if (is_multicast_ether_addr(mac_addr))
stats->mprc++;
if (frame_len == hw->max_frame_size) {
/* In this case, the hardware has overcounted the number of
* oversize frames.
*/
if (stats->roc > 0)
stats->roc--;
}
/* Adjust the bin counters when the extra byte put the frame in the
* wrong bin. Remember that the frame_len was adjusted above.
*/
if (frame_len == 64) {
stats->prc64++;
stats->prc127--;
} else if (frame_len == 127) {
stats->prc127++;
stats->prc255--;
} else if (frame_len == 255) {
stats->prc255++;
stats->prc511--;
} else if (frame_len == 511) {
stats->prc511++;
stats->prc1023--;
} else if (frame_len == 1023) {
stats->prc1023++;
stats->prc1522--;
} else if (frame_len == 1522) {
stats->prc1522++;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| florian westphal | florian westphal | 240 | 100.00% | 1 | 100.00% |
| Total | 240 | 100.00% | 1 | 100.00% |
static bool e1000_tbi_should_accept(struct e1000_adapter *adapter,
u8 status, u8 errors,
u32 length, const u8 *data)
{
struct e1000_hw *hw = &adapter->hw;
u8 last_byte = *(data + length - 1);
if (TBI_ACCEPT(hw, status, errors, length, last_byte)) {
unsigned long irq_flags;
spin_lock_irqsave(&adapter->stats_lock, irq_flags);
e1000_tbi_adjust_stats(hw, &adapter->stats, length, data);
spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
return true;
}
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| florian westphal | florian westphal | 108 | 100.00% | 1 | 100.00% |
| Total | 108 | 100.00% | 1 | 100.00% |
static struct sk_buff *e1000_alloc_rx_skb(struct e1000_adapter *adapter,
unsigned int bufsz)
{
struct sk_buff *skb = napi_alloc_skb(&adapter->napi, bufsz);
if (unlikely(!skb))
adapter->alloc_rx_buff_failed++;
return skb;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| florian westphal | florian westphal | 45 | 93.75% | 1 | 50.00% |
| alexander duyck | alexander duyck | 3 | 6.25% | 1 | 50.00% |
| Total | 48 | 100.00% | 2 | 100.00% |
/**
* e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
* @adapter: board private structure
* @rx_ring: ring to clean
* @work_done: amount of napi work completed this call
* @work_to_do: max amount of work allowed for this call to do
*
* the return value indicates whether actual cleaning was done, there
* is no guarantee that everything was cleaned
*/
static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int *work_done, int work_to_do)
{
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc, *next_rxd;
struct e1000_rx_buffer *buffer_info, *next_buffer;
u32 length;
unsigned int i;
int cleaned_count = 0;
bool cleaned = false;
unsigned int total_rx_bytes = 0, total_rx_packets = 0;
i = rx_ring->next_to_clean;
rx_desc = E1000_RX_DESC(*rx_ring, i);
buffer_info = &rx_ring->buffer_info[i];
while (rx_desc->status & E1000_RXD_STAT_DD) {
struct sk_buff *skb;
u8 status;
if (*work_done >= work_to_do)
break;
(*work_done)++;
dma_rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
if (++i == rx_ring->count)
i = 0;
next_rxd = E1000_RX_DESC(*rx_ring, i);
prefetch(next_rxd);
next_buffer = &rx_ring->buffer_info[i];
cleaned = true;
cleaned_count++;
dma_unmap_page(&pdev->dev, buffer_info->dma,
adapter->rx_buffer_len, DMA_FROM_DEVICE);
buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
/* errors is only valid for DD + EOP descriptors */
if (unlikely((status & E1000_RXD_STAT_EOP) &&
(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
u8 *mapped = page_address(buffer_info->rxbuf.page);
if (e1000_tbi_should_accept(adapter, status,
rx_desc->errors,
length, mapped)) {
length--;
} else if (netdev->features & NETIF_F_RXALL) {
goto process_skb;
} else {
/* an error means any chain goes out the window
* too
*/
if (rx_ring->rx_skb_top)
dev_kfree_skb(rx_ring->rx_skb_top);
rx_ring->rx_skb_top = NULL;
goto next_desc;
}
}
#define rxtop rx_ring->rx_skb_top
process_skb:
if (!(status & E1000_RXD_STAT_EOP)) {
/* this descriptor is only the beginning (or middle) */
if (!rxtop) {
/* this is the beginning of a chain */
rxtop = napi_get_frags(&adapter->napi);
if (!rxtop)
break;
skb_fill_page_desc(rxtop, 0,
buffer_info->rxbuf.page,
0, length);
} else {
/* this is the middle of a chain */
skb_fill_page_desc(rxtop,
skb_shinfo(rxtop)->nr_frags,
buffer_info->rxbuf.page, 0, length);
}
e1000_consume_page(buffer_info, rxtop, length);
goto next_desc;
} else {
if (rxtop) {
/* end of the chain */
skb_fill_page_desc(rxtop,
skb_shinfo(rxtop)->nr_frags,
buffer_info->rxbuf.page, 0, length);
skb = rxtop;
rxtop = NULL;
e1000_consume_page(buffer_info, skb, length);
} else {
struct page *p;
/* no chain, got EOP, this buf is the packet
* copybreak to save the put_page/alloc_page
*/
p = buffer_info->rxbuf.page;
if (length <= copybreak) {
u8 *vaddr;
if (likely(!(netdev->features & NETIF_F_RXFCS)))
length -= 4;
skb = e1000_alloc_rx_skb(adapter,
length);
if (!skb)
break;
vaddr = kmap_atomic(p);
memcpy(skb_tail_pointer(skb), vaddr,
length);
kunmap_atomic(vaddr);
/* re-use the page, so don't erase
* buffer_info->rxbuf.page
*/
skb_put(skb, length);
e1000_rx_checksum(adapter,
status | rx_desc->errors << 24,
le16_to_cpu(rx_desc->csum), skb);
total_rx_bytes += skb->len;
total_rx_packets++;
e1000_receive_skb(adapter, status,
rx_desc->special, skb);
goto next_desc;
} else {
skb = napi_get_frags(&adapter->napi);
if (!skb) {
adapter->alloc_rx_buff_failed++;
break;
}
skb_fill_page_desc(skb, 0, p, 0,
length);
e1000_consume_page(buffer_info, skb,
length);
}
}
}
/* Receive Checksum Offload XXX recompute due to CRC strip? */
e1000_rx_checksum(adapter,
(u32)(status) |
((u32)(rx_desc->errors) << 24),
le16_to_cpu(rx_desc->csum), skb);
total_rx_bytes += (skb->len - 4); /* don't count FCS */
if (likely(!(netdev->features & NETIF_F_RXFCS)))
pskb_trim(skb, skb->len - 4);
total_rx_packets++;
if (status & E1000_RXD_STAT_VP) {
__le16 vlan = rx_desc->special;
u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
}
napi_gro_frags(&adapter->napi);
next_desc:
rx_desc->status = 0;
/* return some buffers to hardware, one at a time is too slow */
if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
cleaned_count = 0;
}
/* use prefetched values */
rx_desc = next_rxd;
buffer_info = next_buffer;
}
rx_ring->next_to_clean = i;
cleaned_count = E1000_DESC_UNUSED(rx_ring);
if (cleaned_count)
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
adapter->total_rx_packets += total_rx_packets;
adapter->total_rx_bytes += total_rx_bytes;
netdev->stats.rx_bytes += total_rx_bytes;
netdev->stats.rx_packets += total_rx_packets;
return cleaned;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 428 | 48.42% | 5 | 15.62% |
| florian westphal | florian westphal | 182 | 20.59% | 4 | 12.50% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 118 | 13.35% | 2 | 6.25% |
| jeff kirsher | jeff kirsher | 57 | 6.45% | 6 | 18.75% |
| ben greear | ben greear | 38 | 4.30% | 2 | 6.25% |
| jeb cramer | jeb cramer | 21 | 2.38% | 2 | 6.25% |
| jeff garzik | jeff garzik | 10 | 1.13% | 1 | 3.12% |
| sebastian andrzej siewior | sebastian andrzej siewior | 8 | 0.90% | 1 | 3.12% |
| joe perches | joe perches | 6 | 0.68% | 2 | 6.25% |
| nicholas nunley | nicholas nunley | 5 | 0.57% | 1 | 3.12% |
| ajit khaparde | ajit khaparde | 4 | 0.45% | 1 | 3.12% |
| david s. miller | david s. miller | 2 | 0.23% | 1 | 3.12% |
| scott feldman | scott feldman | 2 | 0.23% | 1 | 3.12% |
| alexander duyck | alexander duyck | 1 | 0.11% | 1 | 3.12% |
| neil horman | neil horman | 1 | 0.11% | 1 | 3.12% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 1 | 0.11% | 1 | 3.12% |
| Total | 884 | 100.00% | 32 | 100.00% |
/* this should improve performance for small packets with large amounts
* of reassembly being done in the stack
*/
static struct sk_buff *e1000_copybreak(struct e1000_adapter *adapter,
struct e1000_rx_buffer *buffer_info,
u32 length, const void *data)
{
struct sk_buff *skb;
if (length > copybreak)
return NULL;
skb = e1000_alloc_rx_skb(adapter, length);
if (!skb)
return NULL;
dma_sync_single_for_cpu(&adapter->pdev->dev, buffer_info->dma,
length, DMA_FROM_DEVICE);
memcpy(skb_put(skb, length), data, length);
return skb;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| florian westphal | florian westphal | 46 | 50.00% | 2 | 66.67% |
| joe perches | joe perches | 46 | 50.00% | 1 | 33.33% |
| Total | 92 | 100.00% | 3 | 100.00% |
/**
* e1000_clean_rx_irq - Send received data up the network stack; legacy
* @adapter: board private structure
* @rx_ring: ring to clean
* @work_done: amount of napi work completed this call
* @work_to_do: max amount of work allowed for this call to do
*/
static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int *work_done, int work_to_do)
{
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc, *next_rxd;
struct e1000_rx_buffer *buffer_info, *next_buffer;
u32 length;
unsigned int i;
int cleaned_count = 0;
bool cleaned = false;
unsigned int total_rx_bytes = 0, total_rx_packets = 0;
i = rx_ring->next_to_clean;
rx_desc = E1000_RX_DESC(*rx_ring, i);
buffer_info = &rx_ring->buffer_info[i];
while (rx_desc->status & E1000_RXD_STAT_DD) {
struct sk_buff *skb;
u8 *data;
u8 status;
if (*work_done >= work_to_do)
break;
(*work_done)++;
dma_rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
length = le16_to_cpu(rx_desc->length);
data = buffer_info->rxbuf.data;
prefetch(data);
skb = e1000_copybreak(adapter, buffer_info, length, data);
if (!skb) {
unsigned int frag_len = e1000_frag_len(adapter);
skb = build_skb(data - E1000_HEADROOM, frag_len);
if (!skb) {
adapter->alloc_rx_buff_failed++;
break;
}
skb_reserve(skb, E1000_HEADROOM);
dma_unmap_single(&pdev->dev, buffer_info->dma,
adapter->rx_buffer_len,
DMA_FROM_DEVICE);
buffer_info->dma = 0;
buffer_info->rxbuf.data = NULL;
}
if (++i == rx_ring->count)
i = 0;
next_rxd = E1000_RX_DESC(*rx_ring, i);
prefetch(next_rxd);
next_buffer = &rx_ring->buffer_info[i];
cleaned = true;
cleaned_count++;
/* !EOP means multiple descriptors were used to store a single
* packet, if thats the case we need to toss it. In fact, we
* to toss every packet with the EOP bit clear and the next
* frame that _does_ have the EOP bit set, as it is by
* definition only a frame fragment
*/
if (unlikely(!(status & E1000_RXD_STAT_EOP)))
adapter->discarding = true;
if (adapter->discarding) {
/* All receives must fit into a single buffer */
netdev_dbg(netdev, "Receive packet consumed multiple buffers\n");
dev_kfree_skb(skb);
if (status & E1000_RXD_STAT_EOP)
adapter->discarding = false;
goto next_desc;
}
if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
if (e1000_tbi_should_accept(adapter, status,
rx_desc->errors,
length, data)) {
length--;
} else if (netdev->features & NETIF_F_RXALL) {
goto process_skb;
} else {
dev_kfree_skb(skb);
goto next_desc;
}
}
process_skb:
total_rx_bytes += (length - 4); /* don't count FCS */
total_rx_packets++;
if (likely(!(netdev->features & NETIF_F_RXFCS)))
/* adjust length to remove Ethernet CRC, this must be
* done after the TBI_ACCEPT workaround above
*/
length -= 4;
if (buffer_info->rxbuf.data == NULL)
skb_put(skb, length);
else /* copybreak skb */
skb_trim(skb, length);
/* Receive Checksum Offload */
e1000_rx_checksum(adapter,
(u32)(status) |
((u32)(rx_desc->errors) << 24),
le16_to_cpu(rx_desc->csum), skb);
e1000_receive_skb(adapter, status, rx_desc->special, skb);
next_desc:
rx_desc->status = 0;
/* return some buffers to hardware, one at a time is too slow */
if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
cleaned_count = 0;
}
/* use prefetched values */
rx_desc = next_rxd;
buffer_info = next_buffer;
}
rx_ring->next_to_clean = i;
cleaned_count = E1000_DESC_UNUSED(rx_ring);
if (cleaned_count)
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
adapter->total_rx_packets += total_rx_packets;
adapter->total_rx_bytes += total_rx_bytes;
netdev->stats.rx_bytes += total_rx_bytes;
netdev->stats.rx_packets += total_rx_packets;
return cleaned;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 450 | 70.31% | 2 | 15.38% |
| florian westphal | florian westphal | 142 | 22.19% | 4 | 30.77% |
| ben greear | ben greear | 37 | 5.78% | 2 | 15.38% |
| ajit khaparde | ajit khaparde | 4 | 0.62% | 1 | 7.69% |
| jeff kirsher | jeff kirsher | 3 | 0.47% | 1 | 7.69% |
| joe perches | joe perches | 2 | 0.31% | 1 | 7.69% |
| alexander duyck | alexander duyck | 1 | 0.16% | 1 | 7.69% |
| emil tantilov | emil tantilov | 1 | 0.16% | 1 | 7.69% |
| Total | 640 | 100.00% | 13 | 100.00% |
/**
* e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
* @adapter: address of board private structure
* @rx_ring: pointer to receive ring structure
* @cleaned_count: number of buffers to allocate this pass
**/
static void
e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring, int cleaned_count)
{
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc;
struct e1000_rx_buffer *buffer_info;
unsigned int i;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
while (cleaned_count--) {
/* allocate a new page if necessary */
if (!buffer_info->rxbuf.page) {
buffer_info->rxbuf.page = alloc_page(GFP_ATOMIC);
if (unlikely(!buffer_info->rxbuf.page)) {
adapter->alloc_rx_buff_failed++;
break;
}
}
if (!buffer_info->dma) {
buffer_info->dma = dma_map_page(&pdev->dev,
buffer_info->rxbuf.page, 0,
adapter->rx_buffer_len,
DMA_FROM_DEVICE);
if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
put_page(buffer_info->rxbuf.page);
buffer_info->rxbuf.page = NULL;
buffer_info->dma = 0;
adapter->alloc_rx_buff_failed++;
break;
}
}
rx_desc = E1000_RX_DESC(*rx_ring, i);
rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
if (unlikely(++i == rx_ring->count))
i = 0;
buffer_info = &rx_ring->buffer_info[i];
}
if (likely(rx_ring->next_to_use != i)) {
rx_ring->next_to_use = i;
if (unlikely(i-- == 0))
i = (rx_ring->count - 1);
/* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only
* applicable for weak-ordered memory model archs,
* such as IA-64).
*/
wmb();
writel(i, adapter->hw.hw_addr + rx_ring->rdt);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 177 | 60.41% | 3 | 18.75% |
| anton blanchard | anton blanchard | 39 | 13.31% | 1 | 6.25% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 30 | 10.24% | 3 | 18.75% |
| florian westphal | florian westphal | 16 | 5.46% | 2 | 12.50% |
| jeff kirsher | jeff kirsher | 10 | 3.41% | 2 | 12.50% |
| nicholas nunley | nicholas nunley | 9 | 3.07% | 1 | 6.25% |
| jeb cramer | jeb cramer | 5 | 1.71% | 2 | 12.50% |
| auke kok | auke kok | 5 | 1.71% | 1 | 6.25% |
| ganesh venkatesan | ganesh venkatesan | 2 | 0.68% | 1 | 6.25% |
| Total | 293 | 100.00% | 16 | 100.00% |
/**
* e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
* @adapter: address of board private structure
**/
static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int cleaned_count)
{
struct e1000_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc;
struct e1000_rx_buffer *buffer_info;
unsigned int i;
unsigned int bufsz = adapter->rx_buffer_len;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
while (cleaned_count--) {
void *data;
if (buffer_info->rxbuf.data)
goto skip;
data = e1000_alloc_frag(adapter);
if (!data) {
/* Better luck next round */
adapter->alloc_rx_buff_failed++;
break;
}
/* Fix for errata 23, can't cross 64kB boundary */
if (!e1000_check_64k_bound(adapter, data, bufsz)) {
void *olddata = data;
e_err(rx_err, "skb align check failed: %u bytes at "
"%p\n", bufsz, data);
/* Try again, without freeing the previous */
data = e1000_alloc_frag(adapter);
/* Failed allocation, critical failure */
if (!data) {
skb_free_frag(olddata);
adapter->alloc_rx_buff_failed++;
break;
}
if (!e1000_check_64k_bound(adapter, data, bufsz)) {
/* give up */
skb_free_frag(data);
skb_free_frag(olddata);
adapter->alloc_rx_buff_failed++;
break;
}
/* Use new allocation */
skb_free_frag(olddata);
}
buffer_info->dma = dma_map_single(&pdev->dev,
data,
adapter->rx_buffer_len,
DMA_FROM_DEVICE);
if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
skb_free_frag(data);
buffer_info->dma = 0;
adapter->alloc_rx_buff_failed++;
break;
}
/* XXX if it was allocated cleanly it will never map to a
* boundary crossing
*/
/* Fix for errata 23, can't cross 64kB boundary */
if (!e1000_check_64k_bound(adapter,
(void *)(unsigned long)buffer_info->dma,
adapter->rx_buffer_len)) {
e_err(rx_err, "dma align check failed: %u bytes at "
"%p\n", adapter->rx_buffer_len,
(void *)(unsigned long)buffer_info->dma);
dma_unmap_single(&pdev->dev, buffer_info->dma,
adapter->rx_buffer_len,
DMA_FROM_DEVICE);
skb_free_frag(data);
buffer_info->rxbuf.data = NULL;
buffer_info->dma = 0;
adapter->alloc_rx_buff_failed++;
break;
}
buffer_info->rxbuf.data = data;
skip:
rx_desc = E1000_RX_DESC(*rx_ring, i);
rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
if (unlikely(++i == rx_ring->count))
i = 0;
buffer_info = &rx_ring->buffer_info[i];
}
if (likely(rx_ring->next_to_use != i)) {
rx_ring->next_to_use = i;
if (unlikely(i-- == 0))
i = (rx_ring->count - 1);
/* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only
* applicable for weak-ordered memory model archs,
* such as IA-64).
*/
wmb();
writel(i, hw->hw_addr + rx_ring->rdt);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 229 | 48.01% | 6 | 19.35% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 61 | 12.79% | 4 | 12.90% |
| florian westphal | florian westphal | 51 | 10.69% | 3 | 9.68% |
| anton blanchard | anton blanchard | 27 | 5.66% | 1 | 3.23% |
| jeff garzik | jeff garzik | 26 | 5.45% | 1 | 3.23% |
| nicholas nunley | nicholas nunley | 14 | 2.94% | 1 | 3.23% |
| scott feldman | scott feldman | 11 | 2.31% | 1 | 3.23% |
| emil tantilov | emil tantilov | 10 | 2.10% | 2 | 6.45% |
| auke kok | auke kok | 10 | 2.10% | 1 | 3.23% |
| francois romieu | francois romieu | 8 | 1.68% | 1 | 3.23% |
| jeb cramer | jeb cramer | 8 | 1.68% | 2 | 6.45% |
| jeff kirsher | jeff kirsher | 7 | 1.47% | 2 | 6.45% |
| alexander duyck | alexander duyck | 6 | 1.26% | 1 | 3.23% |
| ganesh venkatesan | ganesh venkatesan | 4 | 0.84% | 1 | 3.23% |
| christopher goldfarb | christopher goldfarb | 2 | 0.42% | 1 | 3.23% |
| joe perches | joe perches | 2 | 0.42% | 2 | 6.45% |
| al viro | al viro | 1 | 0.21% | 1 | 3.23% |
| Total | 477 | 100.00% | 31 | 100.00% |
/**
* e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
* @adapter:
**/
static void e1000_smartspeed(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u16 phy_status;
u16 phy_ctrl;
if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg ||
!(hw->autoneg_advertised & ADVERTISE_1000_FULL))
return;
if (adapter->smartspeed == 0) {
/* If Master/Slave config fault is asserted twice,
* we assume back-to-back
*/
e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
if (!(phy_status & SR_1000T_MS_CONFIG_FAULT))
return;
e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
if (!(phy_status & SR_1000T_MS_CONFIG_FAULT))
return;
e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
if (phy_ctrl & CR_1000T_MS_ENABLE) {
phy_ctrl &= ~CR_1000T_MS_ENABLE;
e1000_write_phy_reg(hw, PHY_1000T_CTRL,
phy_ctrl);
adapter->smartspeed++;
if (!e1000_phy_setup_autoneg(hw) &&
!e1000_read_phy_reg(hw, PHY_CTRL,
&phy_ctrl)) {
phy_ctrl |= (MII_CR_AUTO_NEG_EN |
MII_CR_RESTART_AUTO_NEG);
e1000_write_phy_reg(hw, PHY_CTRL,
phy_ctrl);
}
}
return;
} else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
/* If still no link, perhaps using 2/3 pair cable */
e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
phy_ctrl |= CR_1000T_MS_ENABLE;
e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl);
if (!e1000_phy_setup_autoneg(hw) &&
!e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) {
phy_ctrl |= (MII_CR_AUTO_NEG_EN |
MII_CR_RESTART_AUTO_NEG);
e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl);
}
}
/* Restart process after E1000_SMARTSPEED_MAX iterations */
if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
adapter->smartspeed = 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeb cramer | jeb cramer | 252 | 94.03% | 1 | 25.00% |
| joe perches | joe perches | 15 | 5.60% | 2 | 50.00% |
| jeff kirsher | jeff kirsher | 1 | 0.37% | 1 | 25.00% |
| Total | 268 | 100.00% | 4 | 100.00% |
/**
* e1000_ioctl -
* @netdev:
* @ifreq:
* @cmd:
**/
static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
switch (cmd) {
case SIOCGMIIPHY:
case SIOCGMIIREG:
case SIOCSMIIREG:
return e1000_mii_ioctl(netdev, ifr, cmd);
default:
return -EOPNOTSUPP;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 31 | 63.27% | 1 | 50.00% |
| jeb cramer | jeb cramer | 18 | 36.73% | 1 | 50.00% |
| Total | 49 | 100.00% | 2 | 100.00% |
/**
* e1000_mii_ioctl -
* @netdev:
* @ifreq:
* @cmd:
**/
static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
int cmd)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
struct mii_ioctl_data *data = if_mii(ifr);
int retval;
u16 mii_reg;
unsigned long flags;
if (hw->media_type != e1000_media_type_copper)
return -EOPNOTSUPP;
switch (cmd) {
case SIOCGMIIPHY:
data->phy_id = hw->phy_addr;
break;
case SIOCGMIIREG:
spin_lock_irqsave(&adapter->stats_lock, flags);
if (e1000_read_phy_reg(hw, data->reg_num & 0x1F,
&data->val_out)) {
spin_unlock_irqrestore(&adapter->stats_lock, flags);
return -EIO;
}
spin_unlock_irqrestore(&adapter->stats_lock, flags);
break;
case SIOCSMIIREG:
if (data->reg_num & ~(0x1F))
return -EFAULT;
mii_reg = data->val_in;
spin_lock_irqsave(&adapter->stats_lock, flags);
if (e1000_write_phy_reg(hw, data->reg_num,
mii_reg)) {
spin_unlock_irqrestore(&adapter->stats_lock, flags);
return -EIO;
}
spin_unlock_irqrestore(&adapter->stats_lock, flags);
if (hw->media_type == e1000_media_type_copper) {
switch (data->reg_num) {
case PHY_CTRL:
if (mii_reg & MII_CR_POWER_DOWN)
break;
if (mii_reg & MII_CR_AUTO_NEG_EN) {
hw->autoneg = 1;
hw->autoneg_advertised = 0x2F;
} else {
u32 speed;
if (mii_reg & 0x40)
speed = SPEED_1000;
else if (mii_reg & 0x2000)
speed = SPEED_100;
else
speed = SPEED_10;
retval = e1000_set_spd_dplx(
adapter, speed,
((mii_reg & 0x100)
? DUPLEX_FULL :
DUPLEX_HALF));
if (retval)
return retval;
}
if (netif_running(adapter->netdev))
e1000_reinit_locked(adapter);
else
e1000_reset(adapter);
break;
case M88E1000_PHY_SPEC_CTRL:
case M88E1000_EXT_PHY_SPEC_CTRL:
if (e1000_phy_reset(hw))
return -EIO;
break;
}
} else {
switch (data->reg_num) {
case PHY_CTRL:
if (mii_reg & MII_CR_POWER_DOWN)
break;
if (netif_running(adapter->netdev))
e1000_reinit_locked(adapter);
else
e1000_reset(adapter);
break;
}
}
break;
default:
return -EOPNOTSUPP;
}
return E1000_SUCCESS;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeb cramer | jeb cramer | 249 | 59.57% | 1 | 7.14% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 61 | 14.59% | 2 | 14.29% |
| ganesh venkatesan | ganesh venkatesan | 55 | 13.16% | 2 | 14.29% |
| joe perches | joe perches | 16 | 3.83% | 2 | 14.29% |
| david decotigny | david decotigny | 16 | 3.83% | 1 | 7.14% |
| jesse brandeburg | jesse brandeburg | 10 | 2.39% | 1 | 7.14% |
| jeff kirsher | jeff kirsher | 3 | 0.72% | 1 | 7.14% |
| auke kok | auke kok | 3 | 0.72% | 2 | 14.29% |
| al viro | al viro | 3 | 0.72% | 1 | 7.14% |
| scott feldman | scott feldman | 2 | 0.48% | 1 | 7.14% |
| Total | 418 | 100.00% | 14 | 100.00% |
void e1000_pci_set_mwi(struct e1000_hw *hw)
{
struct e1000_adapter *adapter = hw->back;
int ret_val = pci_set_mwi(adapter->pdev);
if (ret_val)
e_err(probe, "Error in setting MWI\n");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| scott feldman | scott feldman | 25 | 62.50% | 1 | 16.67% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 10 | 25.00% | 1 | 16.67% |
| emil tantilov | emil tantilov | 3 | 7.50% | 2 | 33.33% |
| joe perches | joe perches | 1 | 2.50% | 1 | 16.67% |
| ganesh venkatesan | ganesh venkatesan | 1 | 2.50% | 1 | 16.67% |
| Total | 40 | 100.00% | 6 | 100.00% |
void e1000_pci_clear_mwi(struct e1000_hw *hw)
{
struct e1000_adapter *adapter = hw->back;
pci_clear_mwi(adapter->pdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| scott feldman | scott feldman | 25 | 96.15% | 1 | 50.00% |
| joe perches | joe perches | 1 | 3.85% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
int e1000_pcix_get_mmrbc(struct e1000_hw *hw)
{
struct e1000_adapter *adapter = hw->back;
return pcix_get_mmrbc(adapter->pdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| peter oruba | peter oruba | 26 | 96.30% | 1 | 50.00% |
| joe perches | joe perches | 1 | 3.70% | 1 | 50.00% |
| Total | 27 | 100.00% | 2 | 100.00% |
void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
{
struct e1000_adapter *adapter = hw->back;
pcix_set_mmrbc(adapter->pdev, mmrbc);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| peter oruba | peter oruba | 30 | 96.77% | 1 | 50.00% |
| joe perches | joe perches | 1 | 3.23% | 1 | 50.00% |
| Total | 31 | 100.00% | 2 | 100.00% |
void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value)
{
outl(value, port);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| scott feldman | scott feldman | 22 | 91.67% | 2 | 50.00% |
| joe perches | joe perches | 2 | 8.33% | 2 | 50.00% |
| Total | 24 | 100.00% | 4 | 100.00% |
static bool e1000_vlan_used(struct e1000_adapter *adapter)
{
u16 vid;
for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
return true;
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jiri pirko | jiri pirko | 22 | 78.57% | 1 | 50.00% |
| christopher goldfarb | christopher goldfarb | 6 | 21.43% | 1 | 50.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
static void __e1000_vlan_mode(struct e1000_adapter *adapter,
netdev_features_t features)
{
struct e1000_hw *hw = &adapter->hw;
u32 ctrl;
ctrl = er32(CTRL);
if (features & NETIF_F_HW_VLAN_CTAG_RX) {
/* enable VLAN tag insert/strip */
ctrl |= E1000_CTRL_VME;
} else {
/* disable VLAN tag insert/strip */
ctrl &= ~E1000_CTRL_VME;
}
ew32(CTRL, ctrl);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jiri pirko | jiri pirko | 62 | 98.41% | 1 | 50.00% |
| patrick mchardy | patrick mchardy | 1 | 1.59% | 1 | 50.00% |
| Total | 63 | 100.00% | 2 | 100.00% |
static void e1000_vlan_filter_on_off(struct e1000_adapter *adapter,
bool filter_on)
{
struct e1000_hw *hw = &adapter->hw;
u32 rctl;
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_disable(adapter);
__e1000_vlan_mode(adapter, adapter->netdev->features);
if (filter_on) {
/* enable VLAN receive filtering */
rctl = er32(RCTL);
rctl &= ~E1000_RCTL_CFIEN;
if (!(adapter->netdev->flags & IFF_PROMISC))
rctl |= E1000_RCTL_VFE;
ew32(RCTL, rctl);
e1000_update_mng_vlan(adapter);
} else {
/* disable VLAN receive filtering */
rctl = er32(RCTL);
rctl &= ~E1000_RCTL_VFE;
ew32(RCTL, rctl);
}
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_enable(adapter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jiri pirko | jiri pirko | 38 | 26.21% | 2 | 25.00% |
| christopher goldfarb | christopher goldfarb | 37 | 25.52% | 1 | 12.50% |
| david graham | david graham | 35 | 24.14% | 1 | 12.50% |
| jesse brandeburg | jesse brandeburg | 13 | 8.97% | 1 | 12.50% |
| joe perches | joe perches | 12 | 8.28% | 2 | 25.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 10 | 6.90% | 1 | 12.50% |
| Total | 145 | 100.00% | 8 | 100.00% |
static void e1000_vlan_mode(struct net_device *netdev,
netdev_features_t features)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_disable(adapter);
__e1000_vlan_mode(adapter, features);
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_enable(adapter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jiri pirko | jiri pirko | 39 | 58.21% | 2 | 33.33% |
| jesse brandeburg | jesse brandeburg | 13 | 19.40% | 1 | 16.67% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 8 | 11.94% | 1 | 16.67% |
| christopher goldfarb | christopher goldfarb | 6 | 8.96% | 1 | 16.67% |
| michal miroslaw | michal miroslaw | 1 | 1.49% | 1 | 16.67% |
| Total | 67 | 100.00% | 6 | 100.00% |
static int e1000_vlan_rx_add_vid(struct net_device *netdev,
__be16 proto, u16 vid)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
u32 vfta, index;
if ((hw->mng_cookie.status &
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
(vid == adapter->mng_vlan_id))
return 0;
if (!e1000_vlan_used(adapter))
e1000_vlan_filter_on_off(adapter, true);
/* add VID to filter table */
index = (vid >> 5) & 0x7F;
vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
vfta |= (1 << (vid & 0x1F));
e1000_write_vfta(hw, index, vfta);
set_bit(vid, adapter->active_vlans);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| christopher goldfarb | christopher goldfarb | 66 | 48.89% | 1 | 12.50% |
| jiri pirko | jiri pirko | 31 | 22.96% | 2 | 25.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 22 | 16.30% | 2 | 25.00% |
| joe perches | joe perches | 13 | 9.63% | 2 | 25.00% |
| patrick mchardy | patrick mchardy | 3 | 2.22% | 1 | 12.50% |
| Total | 135 | 100.00% | 8 | 100.00% |
static int e1000_vlan_rx_kill_vid(struct net_device *netdev,
__be16 proto, u16 vid)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
u32 vfta, index;
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_disable(adapter);
if (!test_bit(__E1000_DOWN, &adapter->flags))
e1000_irq_enable(adapter);
/* remove VID from filter table */
index = (vid >> 5) & 0x7F;
vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
vfta &= ~(1 << (vid & 0x1F));
e1000_write_vfta(hw, index, vfta);
clear_bit(vid, adapter->active_vlans);
if (!e1000_vlan_used(adapter))
e1000_vlan_filter_on_off(adapter, false);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| christopher goldfarb | christopher goldfarb | 76 | 51.01% | 1 | 11.11% |
| jiri pirko | jiri pirko | 28 | 18.79% | 2 | 22.22% |
| jesse brandeburg | jesse brandeburg | 26 | 17.45% | 1 | 11.11% |
| joe perches | joe perches | 12 | 8.05% | 2 | 22.22% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 3 | 2.01% | 1 | 11.11% |
| patrick mchardy | patrick mchardy | 3 | 2.01% | 1 | 11.11% |
| ganesh venkatesan | ganesh venkatesan | 1 | 0.67% | 1 | 11.11% |
| Total | 149 | 100.00% | 9 | 100.00% |
static void e1000_restore_vlan(struct e1000_adapter *adapter)
{
u16 vid;
if (!e1000_vlan_used(adapter))
return;
e1000_vlan_filter_on_off(adapter, true);
for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff garzik | jeff garzik | 27 | 51.92% | 1 | 20.00% |
| jiri pirko | jiri pirko | 17 | 32.69% | 1 | 20.00% |
| patrick mchardy | patrick mchardy | 5 | 9.62% | 1 | 20.00% |
| dan aloni | dan aloni | 2 | 3.85% | 1 | 20.00% |
| joe perches | joe perches | 1 | 1.92% | 1 | 20.00% |
| Total | 52 | 100.00% | 5 | 100.00% |
int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
{
struct e1000_hw *hw = &adapter->hw;
hw->autoneg = 0;
/* Make sure dplx is at most 1 bit and lsb of speed is not set
* for the switch() below to work
*/
if ((spd & 1) || (dplx & ~1))
goto err_inval;
/* Fiber NICs only allow 1000 gbps Full duplex */
if ((hw->media_type == e1000_media_type_fiber) &&
spd != SPEED_1000 &&
dplx != DUPLEX_FULL)
goto err_inval;
switch (spd + dplx) {
case SPEED_10 + DUPLEX_HALF:
hw->forced_speed_duplex = e1000_10_half;
break;
case SPEED_10 + DUPLEX_FULL:
hw->forced_speed_duplex = e1000_10_full;
break;
case SPEED_100 + DUPLEX_HALF:
hw->forced_speed_duplex = e1000_100_half;
break;
case SPEED_100 + DUPLEX_FULL:
hw->forced_speed_duplex = e1000_100_full;
break;
case SPEED_1000 + DUPLEX_FULL:
hw->autoneg = 1;
hw->autoneg_advertised = ADVERTISE_1000_FULL;
break;
case SPEED_1000 + DUPLEX_HALF: /* not supported */
default:
goto err_inval;
}
/* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
hw->mdix = AUTO_ALL_MODES;
return 0;
err_inval:
e_err(probe, "Unsupported Speed/Duplex configuration\n");
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeb cramer | jeb cramer | 92 | 51.11% | 1 | 9.09% |
| david decotigny | david decotigny | 42 | 23.33% | 1 | 9.09% |
| joe perches | joe perches | 17 | 9.44% | 2 | 18.18% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 15 | 8.33% | 2 | 18.18% |
| jesse brandeburg | jesse brandeburg | 7 | 3.89% | 1 | 9.09% |
| emil tantilov | emil tantilov | 3 | 1.67% | 2 | 18.18% |
| ganesh venkatesan | ganesh venkatesan | 3 | 1.67% | 1 | 9.09% |
| jeff kirsher | jeff kirsher | 1 | 0.56% | 1 | 9.09% |
| Total | 180 | 100.00% | 11 | 100.00% |
static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
u32 ctrl, ctrl_ext, rctl, status;
u32 wufc = adapter->wol;
#ifdef CONFIG_PM
int retval = 0;
#endif
netif_device_detach(netdev);
if (netif_running(netdev)) {
int count = E1000_CHECK_RESET_COUNT;
while (test_bit(__E1000_RESETTING, &adapter->flags) && count--)
usleep_range(10000, 20000);
WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
e1000_down(adapter);
}
#ifdef CONFIG_PM
retval = pci_save_state(pdev);
if (retval)
return retval;
#endif
status = er32(STATUS);
if (status & E1000_STATUS_LU)
wufc &= ~E1000_WUFC_LNKC;
if (wufc) {
e1000_setup_rctl(adapter);
e1000_set_rx_mode(netdev);
rctl = er32(RCTL);
/* turn on all-multi mode if wake on multicast is enabled */
if (wufc & E1000_WUFC_MC)
rctl |= E1000_RCTL_MPE;
/* enable receives in the hardware */
ew32(RCTL, rctl | E1000_RCTL_EN);
if (hw->mac_type >= e1000_82540) {
ctrl = er32(CTRL);
/* advertise wake from D3Cold */
#define E1000_CTRL_ADVD3WUC 0x00100000
/* phy power management enable */
#define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
ctrl |= E1000_CTRL_ADVD3WUC |
E1000_CTRL_EN_PHY_PWR_MGMT;
ew32(CTRL, ctrl);
}
if (hw->media_type == e1000_media_type_fiber ||
hw->media_type == e1000_media_type_internal_serdes) {
/* keep the laser running in D3 */
ctrl_ext = er32(CTRL_EXT);
ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
ew32(CTRL_EXT, ctrl_ext);
}
ew32(WUC, E1000_WUC_PME_EN);
ew32(WUFC, wufc);
} else {
ew32(WUC, 0);
ew32(WUFC, 0);
}
e1000_release_manageability(adapter);
*enable_wake = !!wufc;
/* make sure adapter isn't asleep if manageability is enabled */
if (adapter->en_mng_pt)
*enable_wake = true;
if (netif_running(netdev))
e1000_free_irq(adapter);
pci_disable_device(pdev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| scott feldman | scott feldman | 155 | 42.94% | 3 | 13.64% |
| auke kok | auke kok | 34 | 9.42% | 5 | 22.73% |
| jeff garzik | jeff garzik | 32 | 8.86% | 2 | 9.09% |
| yanjun zhu | yanjun zhu | 27 | 7.48% | 1 | 4.55% |
| jeb j. cramer | jeb j. cramer | 26 | 7.20% | 1 | 4.55% |
| joe perches | joe perches | 26 | 7.20% | 2 | 9.09% |
| rafael j. wysocki | rafael j. wysocki | 19 | 5.26% | 1 | 4.55% |
| jesse brandeburg | jesse brandeburg | 17 | 4.71% | 1 | 4.55% |
| dean nelson | dean nelson | 10 | 2.77% | 1 | 4.55% |
| ganesh venkatesan | ganesh venkatesan | 5 | 1.39% | 1 | 4.55% |
| jeff kirsher | jeff kirsher | 5 | 1.39% | 1 | 4.55% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 3 | 0.83% | 1 | 4.55% |
| jeb cramer | jeb cramer | 1 | 0.28% | 1 | 4.55% |
| patrick mchardy | patrick mchardy | 1 | 0.28% | 1 | 4.55% |
| Total | 361 | 100.00% | 22 | 100.00% |
#ifdef CONFIG_PM
static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
{
int retval;
bool wake;
retval = __e1000_shutdown(pdev, &wake);
if (retval)
return retval;
if (wake) {
pci_prepare_to_sleep(pdev);
} else {
pci_wake_from_d3(pdev, false);
pci_set_power_state(pdev, PCI_D3hot);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| rafael j. wysocki | rafael j. wysocki | 55 | 80.88% | 1 | 33.33% |
| scott feldman | scott feldman | 9 | 13.24% | 1 | 33.33% |
| pavel machek | pavel machek | 4 | 5.88% | 1 | 33.33% |
| Total | 68 | 100.00% | 3 | 100.00% |
static int e1000_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
u32 err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
pci_save_state(pdev);
if (adapter->need_ioport)
err = pci_enable_device(pdev);
else
err = pci_enable_device_mem(pdev);
if (err) {
pr_err("Cannot enable PCI device from suspend\n");
return err;
}
pci_set_master(pdev);
pci_enable_wake(pdev, PCI_D3hot, 0);
pci_enable_wake(pdev, PCI_D3cold, 0);
if (netif_running(netdev)) {
err = e1000_request_irq(adapter);
if (err)
return err;
}
e1000_power_up_phy(adapter);
e1000_reset(adapter);
ew32(WUS, ~0);
e1000_init_manageability(adapter);
if (netif_running(netdev))
e1000_up(adapter);
netif_device_attach(netdev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| scott feldman | scott feldman | 63 | 34.05% | 1 | 5.88% |
| auke kok | auke kok | 33 | 17.84% | 3 | 17.65% |
| joe perches | joe perches | 23 | 12.43% | 3 | 17.65% |
| taku izumi | taku izumi | 14 | 7.57% | 1 | 5.88% |
| jeb j. cramer | jeb j. cramer | 12 | 6.49% | 1 | 5.88% |
| andrew morton | andrew morton | 11 | 5.95% | 1 | 5.88% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 11 | 5.95% | 2 | 11.76% |
| nicholas nunley | nicholas nunley | 5 | 2.70% | 1 | 5.88% |
| jeff garzik | jeff garzik | 5 | 2.70% | 1 | 5.88% |
| pavel machek | pavel machek | 3 | 1.62% | 1 | 5.88% |
| jesse brandeburg | jesse brandeburg | 3 | 1.62% | 1 | 5.88% |
| emil tantilov | emil tantilov | 2 | 1.08% | 1 | 5.88% |
| Total | 185 | 100.00% | 17 | 100.00% |
#endif
static void e1000_shutdown(struct pci_dev *pdev)
{
bool wake;
__e1000_shutdown(pdev, &wake);
if (system_state == SYSTEM_POWER_OFF) {
pci_wake_from_d3(pdev, wake);
pci_set_power_state(pdev, PCI_D3hot);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| rafael j. wysocki | rafael j. wysocki | 28 | 63.64% | 1 | 50.00% |
| auke kok | auke kok | 16 | 36.36% | 1 | 50.00% |
| Total | 44 | 100.00% | 2 | 100.00% |
#ifdef CONFIG_NET_POLL_CONTROLLER
/* Polling 'interrupt' - used by things like netconsole to send skbs
* without having to re-enable interrupts. It's not called while
* the interrupt routine is executing.
*/
static void e1000_netpoll(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
if (disable_hardirq(adapter->pdev->irq))
e1000_intr(adapter->pdev->irq, netdev);
enable_irq(adapter->pdev->irq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| scott feldman | scott feldman | 42 | 80.77% | 1 | 25.00% |
| americo wang | americo wang | 4 | 7.69% | 1 | 25.00% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 3 | 5.77% | 1 | 25.00% |
| ganesh venkatesan | ganesh venkatesan | 3 | 5.77% | 1 | 25.00% |
| Total | 52 | 100.00% | 4 | 100.00% |
#endif
/**
* e1000_io_error_detected - called when PCI error is detected
* @pdev: Pointer to PCI device
* @state: The current pci connection state
*
* This function is called after a PCI bus error affecting
* this device has been detected.
*/
static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
netif_device_detach(netdev);
if (state == pci_channel_io_perm_failure)
return PCI_ERS_RESULT_DISCONNECT;
if (netif_running(netdev))
e1000_down(adapter);
pci_disable_device(pdev);
/* Request a slot slot reset. */
return PCI_ERS_RESULT_NEED_RESET;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 52 | 75.36% | 1 | 25.00% |
| andre detsch | andre detsch | 9 | 13.04% | 1 | 25.00% |
| linas vepstas | linas vepstas | 5 | 7.25% | 1 | 25.00% |
| wang chen | wang chen | 3 | 4.35% | 1 | 25.00% |
| Total | 69 | 100.00% | 4 | 100.00% |
/**
* e1000_io_slot_reset - called after the pci bus has been reset.
* @pdev: Pointer to PCI device
*
* Restart the card from scratch, as if from a cold-boot. Implementation
* resembles the first-half of the e1000_resume routine.
*/
static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
int err;
if (adapter->need_ioport)
err = pci_enable_device(pdev);
else
err = pci_enable_device_mem(pdev);
if (err) {
pr_err("Cannot re-enable PCI device after reset.\n");
return PCI_ERS_RESULT_DISCONNECT;
}
pci_set_master(pdev);
pci_enable_wake(pdev, PCI_D3hot, 0);
pci_enable_wake(pdev, PCI_D3cold, 0);
e1000_reset(adapter);
ew32(WUS, ~0);
return PCI_ERS_RESULT_RECOVERED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 79 | 66.95% | 1 | 16.67% |
| taku izumi | taku izumi | 21 | 17.80% | 1 | 16.67% |
| joe perches | joe perches | 11 | 9.32% | 1 | 16.67% |
| wang chen | wang chen | 3 | 2.54% | 1 | 16.67% |
| linas vepstas | linas vepstas | 2 | 1.69% | 1 | 16.67% |
| emil tantilov | emil tantilov | 2 | 1.69% | 1 | 16.67% |
| Total | 118 | 100.00% | 6 | 100.00% |
/**
* e1000_io_resume - called when traffic can start flowing again.
* @pdev: Pointer to PCI device
*
* This callback is called when the error recovery driver tells us that
* its OK to resume normal operation. Implementation resembles the
* second-half of the e1000_resume routine.
*/
static void e1000_io_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
e1000_init_manageability(adapter);
if (netif_running(netdev)) {
if (e1000_up(adapter)) {
pr_info("can't bring device back up after reset\n");
return;
}
}
netif_device_attach(netdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| auke kok | auke kok | 55 | 84.62% | 1 | 25.00% |
| jeff garzik | jeff garzik | 5 | 7.69% | 1 | 25.00% |
| wang chen | wang chen | 3 | 4.62% | 1 | 25.00% |
| emil tantilov | emil tantilov | 2 | 3.08% | 1 | 25.00% |
| Total | 65 | 100.00% | 4 | 100.00% |
/* e1000_main.c */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jesse brandeburg | jesse brandeburg | 3964 | 17.36% | 53 | 12.99% |
| mallikarjuna r chilakala | mallikarjuna r chilakala | 3142 | 13.76% | 23 | 5.64% |
| jeff garzik | jeff garzik | 2979 | 13.04% | 10 | 2.45% |
| auke kok | auke kok | 1202 | 5.26% | 27 | 6.62% |
| tushar dave | tushar dave | 1170 | 5.12% | 5 | 1.23% |
| jeb cramer | jeb cramer | 1162 | 5.09% | 13 | 3.19% |
| scott feldman | scott feldman | 1034 | 4.53% | 32 | 7.84% |
| florian westphal | florian westphal | 1027 | 4.50% | 8 | 1.96% |
| jeff kirsher | jeff kirsher | 796 | 3.49% | 35 | 8.58% |
| joe perches | joe perches | 783 | 3.43% | 9 | 2.21% |
| christopher goldfarb | christopher goldfarb | 767 | 3.36% | 7 | 1.72% |
| ganesh venkatesan | ganesh venkatesan | 585 | 2.56% | 14 | 3.43% |
| jiri pirko | jiri pirko | 470 | 2.06% | 10 | 2.45% |
| alexey kuznetsov | alexey kuznetsov | 354 | 1.55% | 1 | 0.25% |
| alexander duyck | alexander duyck | 300 | 1.31% | 9 | 2.21% |
| bruce allan | bruce allan | 268 | 1.17% | 6 | 1.47% |
| nicholas nunley | nicholas nunley | 229 | 1.00% | 3 | 0.74% |
| taku izumi | taku izumi | 203 | 0.89% | 1 | 0.25% |
| ben greear | ben greear | 192 | 0.84% | 3 | 0.74% |
| emil tantilov | emil tantilov | 182 | 0.80% | 3 | 0.74% |
| stephen hemminger | stephen hemminger | 156 | 0.68% | 9 | 2.21% |
| rafael j. wysocki | rafael j. wysocki | 122 | 0.53% | 2 | 0.49% |
| dirk brandewie | dirk brandewie | 121 | 0.53% | 1 | 0.25% |
| david graham | david graham | 116 | 0.51% | 2 | 0.49% |
| patrick mchardy | patrick mchardy | 110 | 0.48% | 7 | 1.72% |
| michal miroslaw | michal miroslaw | 108 | 0.47% | 3 | 0.74% |
| vasily averin | vasily averin | 105 | 0.46% | 3 | 0.74% |
| dean nelson | dean nelson | 91 | 0.40% | 4 | 0.98% |
| jeb j. cramer | jeb j. cramer | 74 | 0.32% | 5 | 1.23% |
| anton blanchard | anton blanchard | 66 | 0.29% | 1 | 0.25% |
| herbert xu | herbert xu | 59 | 0.26% | 6 | 1.47% |
| david decotigny | david decotigny | 58 | 0.25% | 1 | 0.25% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 57 | 0.25% | 8 | 1.96% |
| peter oruba | peter oruba | 56 | 0.25% | 1 | 0.25% |
| yanjun zhu | yanjun zhu | 54 | 0.24% | 1 | 0.25% |
| otto estuardo solares cabrera | otto estuardo solares cabrera | 54 | 0.24% | 1 | 0.25% |
| ajit khaparde | ajit khaparde | 47 | 0.21% | 1 | 0.25% |
| francois romieu | francois romieu | 46 | 0.20% | 2 | 0.49% |
| david s. miller | david s. miller | 28 | 0.12% | 5 | 1.23% |
| ian campbell | ian campbell | 27 | 0.12% | 1 | 0.25% |
| sabrina dubroca | sabrina dubroca | 27 | 0.12% | 1 | 0.25% |
| andrew morton | andrew morton | 24 | 0.11% | 5 | 1.23% |
| linas vepstas | linas vepstas | 24 | 0.11% | 4 | 0.98% |
| florian fainelli | florian fainelli | 24 | 0.11% | 2 | 0.49% |
| eric dumazet | eric dumazet | 23 | 0.10% | 6 | 1.47% |
| jarod wilson | jarod wilson | 23 | 0.10% | 1 | 0.25% |
| linus torvalds | linus torvalds | 20 | 0.09% | 2 | 0.49% |
| vlad yasevich | vlad yasevich | 20 | 0.09% | 1 | 0.25% |
| vladimir davydov | vladimir davydov | 20 | 0.09% | 2 | 0.49% |
| milind arun choudhary | milind arun choudhary | 19 | 0.08% | 1 | 0.25% |
| rusty russell | rusty russell | 17 | 0.07% | 2 | 0.49% |
| nicolas schichan | nicolas schichan | 15 | 0.07% | 1 | 0.25% |
| yan burman | yan burman | 15 | 0.07% | 1 | 0.25% |
| francesco ruggeri | francesco ruggeri | 15 | 0.07% | 1 | 0.25% |
| david howells | david howells | 12 | 0.05% | 3 | 0.74% |
| adrian bunk | adrian bunk | 12 | 0.05% | 2 | 0.49% |
| mitch a williams | mitch a williams | 12 | 0.05% | 2 | 0.49% |
| chris leech | chris leech | 10 | 0.04% | 1 | 0.25% |
| wang chen | wang chen | 10 | 0.04% | 2 | 0.49% |
| andre detsch | andre detsch | 9 | 0.04% | 1 | 0.25% |
| ben hutchings | ben hutchings | 9 | 0.04% | 3 | 0.74% |
| roel kluin | roel kluin | 9 | 0.04% | 1 | 0.25% |
| john w. linville | john w. linville | 9 | 0.04% | 1 | 0.25% |
| dan aloni | dan aloni | 9 | 0.04% | 1 | 0.25% |
| pavel machek | pavel machek | 8 | 0.04% | 1 | 0.25% |
| yi zou | yi zou | 8 | 0.04% | 1 | 0.25% |
| sebastian andrzej siewior | sebastian andrzej siewior | 8 | 0.04% | 1 | 0.25% |
| jean sacren | jean sacren | 8 | 0.04% | 2 | 0.49% |
| al viro | al viro | 7 | 0.03% | 2 | 0.49% |
| benoit taine | benoit taine | 6 | 0.03% | 1 | 0.25% |
| dmitriy vyukov | dmitriy vyukov | 6 | 0.03% | 1 | 0.25% |
| eliezer tamir | eliezer tamir | 5 | 0.02% | 1 | 0.25% |
| willem de bruijn | willem de bruijn | 5 | 0.02% | 1 | 0.25% |
| benjamin herrenschmidt | benjamin herrenschmidt | 4 | 0.02% | 1 | 0.25% |
| andrei emeltchenko | andrei emeltchenko | 4 | 0.02% | 1 | 0.25% |
| americo wang | americo wang | 4 | 0.02% | 1 | 0.25% |
| paul gortmaker | paul gortmaker | 3 | 0.01% | 1 | 0.25% |
| russell king | russell king | 2 | 0.01% | 1 | 0.25% |
| harvey harrison | harvey harrison | 2 | 0.01% | 1 | 0.25% |
| alexey dobriyan | alexey dobriyan | 2 | 0.01% | 1 | 0.25% |
| masatake yamato | masatake yamato | 1 | 0.00% | 1 | 0.25% |
| karsten keil | karsten keil | 1 | 0.00% | 1 | 0.25% |
| anupam chanda | anupam chanda | 1 | 0.00% | 1 | 0.25% |
| lucas de marchi | lucas de marchi | 1 | 0.00% | 1 | 0.25% |
| neil horman | neil horman | 1 | 0.00% | 1 | 0.25% |
| arjan van de ven | arjan van de ven | 1 | 0.00% | 1 | 0.25% |
| uwe kleine-koenig | uwe kleine-koenig | 1 | 0.00% | 1 | 0.25% |
| greg kroah-hartman | greg kroah-hartman | | 0.00% | 0 | 0.00% |
| Total | 22840 | 100.00% | 408 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.