![Joe Perches](/assets/img/avatar_default.png)
Only files where David Miller is the primary git-signer. wireless, wimax, ixgbe, etc are not modified. Compile tested x86 allyesconfig only Not all files compiled (not x86 compatible) Added a few > 80 column lines, which I ignored. Existing checkpatch complaints ignored. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
4757 lines
131 KiB
C
4757 lines
131 KiB
C
/*******************************************************************************
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Intel PRO/1000 Linux driver
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Copyright(c) 1999 - 2006 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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Linux NICS <linux.nics@intel.com>
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#include "e1000.h"
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#include <net/ip6_checksum.h>
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char e1000_driver_name[] = "e1000";
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static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
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#define DRV_VERSION "7.3.21-k5-NAPI"
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const char e1000_driver_version[] = DRV_VERSION;
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static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
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/* e1000_pci_tbl - PCI Device ID Table
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*
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* Last entry must be all 0s
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*
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* Macro expands to...
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* {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
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*/
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static struct pci_device_id e1000_pci_tbl[] = {
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INTEL_E1000_ETHERNET_DEVICE(0x1000),
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INTEL_E1000_ETHERNET_DEVICE(0x1001),
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INTEL_E1000_ETHERNET_DEVICE(0x1004),
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INTEL_E1000_ETHERNET_DEVICE(0x1008),
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INTEL_E1000_ETHERNET_DEVICE(0x1009),
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INTEL_E1000_ETHERNET_DEVICE(0x100C),
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INTEL_E1000_ETHERNET_DEVICE(0x100D),
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INTEL_E1000_ETHERNET_DEVICE(0x100E),
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INTEL_E1000_ETHERNET_DEVICE(0x100F),
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INTEL_E1000_ETHERNET_DEVICE(0x1010),
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INTEL_E1000_ETHERNET_DEVICE(0x1011),
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INTEL_E1000_ETHERNET_DEVICE(0x1012),
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INTEL_E1000_ETHERNET_DEVICE(0x1013),
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INTEL_E1000_ETHERNET_DEVICE(0x1014),
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INTEL_E1000_ETHERNET_DEVICE(0x1015),
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INTEL_E1000_ETHERNET_DEVICE(0x1016),
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INTEL_E1000_ETHERNET_DEVICE(0x1017),
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INTEL_E1000_ETHERNET_DEVICE(0x1018),
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INTEL_E1000_ETHERNET_DEVICE(0x1019),
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INTEL_E1000_ETHERNET_DEVICE(0x101A),
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INTEL_E1000_ETHERNET_DEVICE(0x101D),
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INTEL_E1000_ETHERNET_DEVICE(0x101E),
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INTEL_E1000_ETHERNET_DEVICE(0x1026),
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INTEL_E1000_ETHERNET_DEVICE(0x1027),
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INTEL_E1000_ETHERNET_DEVICE(0x1028),
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INTEL_E1000_ETHERNET_DEVICE(0x1075),
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INTEL_E1000_ETHERNET_DEVICE(0x1076),
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INTEL_E1000_ETHERNET_DEVICE(0x1077),
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INTEL_E1000_ETHERNET_DEVICE(0x1078),
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INTEL_E1000_ETHERNET_DEVICE(0x1079),
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INTEL_E1000_ETHERNET_DEVICE(0x107A),
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INTEL_E1000_ETHERNET_DEVICE(0x107B),
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INTEL_E1000_ETHERNET_DEVICE(0x107C),
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INTEL_E1000_ETHERNET_DEVICE(0x108A),
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INTEL_E1000_ETHERNET_DEVICE(0x1099),
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INTEL_E1000_ETHERNET_DEVICE(0x10B5),
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/* required last entry */
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
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int e1000_up(struct e1000_adapter *adapter);
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void e1000_down(struct e1000_adapter *adapter);
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void e1000_reinit_locked(struct e1000_adapter *adapter);
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void e1000_reset(struct e1000_adapter *adapter);
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int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
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int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
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int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
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void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
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void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
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static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
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struct e1000_tx_ring *txdr);
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static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rxdr);
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static void e1000_free_tx_resources(struct e1000_adapter *adapter,
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struct e1000_tx_ring *tx_ring);
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static void e1000_free_rx_resources(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring);
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void e1000_update_stats(struct e1000_adapter *adapter);
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static int e1000_init_module(void);
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static void e1000_exit_module(void);
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static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
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static void __devexit e1000_remove(struct pci_dev *pdev);
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static int e1000_alloc_queues(struct e1000_adapter *adapter);
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static int e1000_sw_init(struct e1000_adapter *adapter);
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static int e1000_open(struct net_device *netdev);
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static int e1000_close(struct net_device *netdev);
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static void e1000_configure_tx(struct e1000_adapter *adapter);
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static void e1000_configure_rx(struct e1000_adapter *adapter);
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static void e1000_setup_rctl(struct e1000_adapter *adapter);
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static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
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static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
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static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
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struct e1000_tx_ring *tx_ring);
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static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring);
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static void e1000_set_rx_mode(struct net_device *netdev);
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static void e1000_update_phy_info(unsigned long data);
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static void e1000_watchdog(unsigned long data);
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static void e1000_82547_tx_fifo_stall(unsigned long data);
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static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
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struct net_device *netdev);
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static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
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static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
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static int e1000_set_mac(struct net_device *netdev, void *p);
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static irqreturn_t e1000_intr(int irq, void *data);
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static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
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struct e1000_tx_ring *tx_ring);
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static int e1000_clean(struct napi_struct *napi, int budget);
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static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int *work_done, int work_to_do);
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static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int *work_done, int work_to_do);
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static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int cleaned_count);
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static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int cleaned_count);
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static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
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static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
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int cmd);
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static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
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static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
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static void e1000_tx_timeout(struct net_device *dev);
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static void e1000_reset_task(struct work_struct *work);
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static void e1000_smartspeed(struct e1000_adapter *adapter);
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static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
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struct sk_buff *skb);
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static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
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static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
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static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
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static void e1000_restore_vlan(struct e1000_adapter *adapter);
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#ifdef CONFIG_PM
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static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
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static int e1000_resume(struct pci_dev *pdev);
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#endif
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static void e1000_shutdown(struct pci_dev *pdev);
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#ifdef CONFIG_NET_POLL_CONTROLLER
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/* for netdump / net console */
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static void e1000_netpoll (struct net_device *netdev);
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#endif
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#define COPYBREAK_DEFAULT 256
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static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
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module_param(copybreak, uint, 0644);
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MODULE_PARM_DESC(copybreak,
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"Maximum size of packet that is copied to a new buffer on receive");
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static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
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pci_channel_state_t state);
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static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
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static void e1000_io_resume(struct pci_dev *pdev);
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static struct pci_error_handlers e1000_err_handler = {
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.error_detected = e1000_io_error_detected,
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.slot_reset = e1000_io_slot_reset,
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.resume = e1000_io_resume,
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};
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static struct pci_driver e1000_driver = {
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.name = e1000_driver_name,
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.id_table = e1000_pci_tbl,
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.probe = e1000_probe,
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.remove = __devexit_p(e1000_remove),
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#ifdef CONFIG_PM
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/* Power Managment Hooks */
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.suspend = e1000_suspend,
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.resume = e1000_resume,
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#endif
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.shutdown = e1000_shutdown,
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.err_handler = &e1000_err_handler
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};
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MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
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MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
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/**
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* e1000_init_module - Driver Registration Routine
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*
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* e1000_init_module is the first routine called when the driver is
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* loaded. All it does is register with the PCI subsystem.
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**/
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static int __init e1000_init_module(void)
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{
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int ret;
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printk(KERN_INFO "%s - version %s\n",
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e1000_driver_string, e1000_driver_version);
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printk(KERN_INFO "%s\n", e1000_copyright);
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ret = pci_register_driver(&e1000_driver);
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if (copybreak != COPYBREAK_DEFAULT) {
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if (copybreak == 0)
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printk(KERN_INFO "e1000: copybreak disabled\n");
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else
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printk(KERN_INFO "e1000: copybreak enabled for "
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"packets <= %u bytes\n", copybreak);
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}
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return ret;
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}
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module_init(e1000_init_module);
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/**
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* e1000_exit_module - Driver Exit Cleanup Routine
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*
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* e1000_exit_module is called just before the driver is removed
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* from memory.
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**/
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static void __exit e1000_exit_module(void)
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{
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pci_unregister_driver(&e1000_driver);
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}
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module_exit(e1000_exit_module);
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static int e1000_request_irq(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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irq_handler_t handler = e1000_intr;
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int irq_flags = IRQF_SHARED;
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int err;
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err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
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netdev);
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if (err) {
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DPRINTK(PROBE, ERR,
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"Unable to allocate interrupt Error: %d\n", err);
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}
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return err;
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}
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static void e1000_free_irq(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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free_irq(adapter->pdev->irq, netdev);
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}
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/**
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* e1000_irq_disable - Mask off interrupt generation on the NIC
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* @adapter: board private structure
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**/
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static void e1000_irq_disable(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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ew32(IMC, ~0);
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E1000_WRITE_FLUSH();
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synchronize_irq(adapter->pdev->irq);
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}
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/**
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* e1000_irq_enable - Enable default interrupt generation settings
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* @adapter: board private structure
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**/
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static void e1000_irq_enable(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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ew32(IMS, IMS_ENABLE_MASK);
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E1000_WRITE_FLUSH();
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}
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static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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struct net_device *netdev = adapter->netdev;
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u16 vid = hw->mng_cookie.vlan_id;
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u16 old_vid = adapter->mng_vlan_id;
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if (adapter->vlgrp) {
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if (!vlan_group_get_device(adapter->vlgrp, vid)) {
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if (hw->mng_cookie.status &
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E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
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e1000_vlan_rx_add_vid(netdev, vid);
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adapter->mng_vlan_id = vid;
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} else
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adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
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if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
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(vid != old_vid) &&
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!vlan_group_get_device(adapter->vlgrp, old_vid))
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e1000_vlan_rx_kill_vid(netdev, old_vid);
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} else
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adapter->mng_vlan_id = vid;
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}
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}
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static void e1000_init_manageability(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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if (adapter->en_mng_pt) {
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u32 manc = er32(MANC);
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/* disable hardware interception of ARP */
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manc &= ~(E1000_MANC_ARP_EN);
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ew32(MANC, manc);
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}
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}
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static void e1000_release_manageability(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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if (adapter->en_mng_pt) {
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u32 manc = er32(MANC);
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/* re-enable hardware interception of ARP */
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manc |= E1000_MANC_ARP_EN;
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ew32(MANC, manc);
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}
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}
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/**
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* e1000_configure - configure the hardware for RX and TX
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* @adapter = private board structure
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**/
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static void e1000_configure(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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int i;
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e1000_set_rx_mode(netdev);
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e1000_restore_vlan(adapter);
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e1000_init_manageability(adapter);
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e1000_configure_tx(adapter);
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e1000_setup_rctl(adapter);
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e1000_configure_rx(adapter);
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/* call E1000_DESC_UNUSED which always leaves
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* at least 1 descriptor unused to make sure
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* next_to_use != next_to_clean */
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for (i = 0; i < adapter->num_rx_queues; i++) {
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struct e1000_rx_ring *ring = &adapter->rx_ring[i];
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adapter->alloc_rx_buf(adapter, ring,
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E1000_DESC_UNUSED(ring));
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}
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adapter->tx_queue_len = netdev->tx_queue_len;
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}
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int e1000_up(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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/* hardware has been reset, we need to reload some things */
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e1000_configure(adapter);
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clear_bit(__E1000_DOWN, &adapter->flags);
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napi_enable(&adapter->napi);
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e1000_irq_enable(adapter);
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netif_wake_queue(adapter->netdev);
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/* fire a link change interrupt to start the watchdog */
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ew32(ICS, E1000_ICS_LSC);
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return 0;
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}
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/**
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* e1000_power_up_phy - restore link in case the phy was powered down
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* @adapter: address of board private structure
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*
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* The phy may be powered down to save power and turn off link when the
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* driver is unloaded and wake on lan is not enabled (among others)
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* *** this routine MUST be followed by a call to e1000_reset ***
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*
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**/
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void e1000_power_up_phy(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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u16 mii_reg = 0;
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/* Just clear the power down bit to wake the phy back up */
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if (hw->media_type == e1000_media_type_copper) {
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/* according to the manual, the phy will retain its
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* settings across a power-down/up cycle */
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e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
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mii_reg &= ~MII_CR_POWER_DOWN;
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e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
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}
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}
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static void e1000_power_down_phy(struct e1000_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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/* Power down the PHY so no link is implied when interface is down *
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* The PHY cannot be powered down if any of the following is true *
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* (a) WoL is enabled
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* (b) AMT is active
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* (c) SoL/IDER session is active */
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if (!adapter->wol && hw->mac_type >= e1000_82540 &&
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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_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);
|
|
mdelay(1);
|
|
}
|
|
out:
|
|
return;
|
|
}
|
|
|
|
void e1000_down(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
u32 rctl, tctl;
|
|
|
|
/* signal that we're down so the interrupt handler does not
|
|
* reschedule our watchdog timer */
|
|
set_bit(__E1000_DOWN, &adapter->flags);
|
|
|
|
/* 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);
|
|
|
|
del_timer_sync(&adapter->tx_fifo_stall_timer);
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
del_timer_sync(&adapter->phy_info_timer);
|
|
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
netif_carrier_off(netdev);
|
|
|
|
e1000_reset(adapter);
|
|
e1000_clean_all_tx_rings(adapter);
|
|
e1000_clean_all_rx_rings(adapter);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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_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))
|
|
DPRINTK(PROBE, 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);
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
printk(KERN_ERR "Unable to allocate memory to dump EEPROM"
|
|
" data\n");
|
|
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;
|
|
|
|
printk(KERN_ERR "/*********************/\n");
|
|
printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old);
|
|
printk(KERN_ERR "Calculated : 0x%04x\n", csum_new);
|
|
|
|
printk(KERN_ERR "Offset Values\n");
|
|
printk(KERN_ERR "======== ======\n");
|
|
print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
|
|
|
|
printk(KERN_ERR "Include this output when contacting your support "
|
|
"provider.\n");
|
|
printk(KERN_ERR "This is not a software error! Something bad "
|
|
"happened to your hardware or\n");
|
|
printk(KERN_ERR "EEPROM image. Ignoring this "
|
|
"problem could result in further problems,\n");
|
|
printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n");
|
|
printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, "
|
|
"which is invalid\n");
|
|
printk(KERN_ERR "and requires you to set the proper MAC "
|
|
"address manually before continuing\n");
|
|
printk(KERN_ERR "to enable this network device.\n");
|
|
printk(KERN_ERR "Please inspect the EEPROM dump and report the issue "
|
|
"to your hardware vendor\n");
|
|
printk(KERN_ERR "or Intel Customer Support.\n");
|
|
printk(KERN_ERR "/*********************/\n");
|
|
|
|
kfree(data);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
}
|
|
|
|
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_register = e1000_vlan_rx_register,
|
|
.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
|
|
};
|
|
|
|
/**
|
|
* 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 __devinit 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 = 0;
|
|
static int global_quad_port_a = 0; /* global ksp3 port a indication */
|
|
int i, err, pci_using_dac;
|
|
u16 eeprom_data = 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;
|
|
|
|
if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
|
|
!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
|
|
pci_using_dac = 1;
|
|
} else {
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (err) {
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (err) {
|
|
E1000_ERR("No usable DMA configuration, "
|
|
"aborting\n");
|
|
goto err_dma;
|
|
}
|
|
}
|
|
pci_using_dac = 0;
|
|
}
|
|
|
|
err = pci_request_selected_regions(pdev, bars, e1000_driver_name);
|
|
if (err)
|
|
goto err_pci_reg;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
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 = (1 << debug) - 1;
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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_82543) {
|
|
netdev->features = NETIF_F_SG |
|
|
NETIF_F_HW_CSUM |
|
|
NETIF_F_HW_VLAN_TX |
|
|
NETIF_F_HW_VLAN_RX |
|
|
NETIF_F_HW_VLAN_FILTER;
|
|
}
|
|
|
|
if ((hw->mac_type >= e1000_82544) &&
|
|
(hw->mac_type != e1000_82547))
|
|
netdev->features |= NETIF_F_TSO;
|
|
|
|
if (pci_using_dac)
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
|
|
netdev->vlan_features |= NETIF_F_TSO;
|
|
netdev->vlan_features |= NETIF_F_HW_CSUM;
|
|
netdev->vlan_features |= NETIF_F_SG;
|
|
|
|
adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
|
|
|
|
/* initialize eeprom parameters */
|
|
if (e1000_init_eeprom_params(hw)) {
|
|
E1000_ERR("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) {
|
|
DPRINTK(PROBE, ERR, "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))
|
|
DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
|
|
}
|
|
/* don't block initalization here due to bad MAC address */
|
|
memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len);
|
|
memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len);
|
|
|
|
if (!is_valid_ether_addr(netdev->perm_addr))
|
|
DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
|
|
|
|
e1000_get_bus_info(hw);
|
|
|
|
init_timer(&adapter->tx_fifo_stall_timer);
|
|
adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
|
|
adapter->tx_fifo_stall_timer.data = (unsigned long)adapter;
|
|
|
|
init_timer(&adapter->watchdog_timer);
|
|
adapter->watchdog_timer.function = &e1000_watchdog;
|
|
adapter->watchdog_timer.data = (unsigned long) adapter;
|
|
|
|
init_timer(&adapter->phy_info_timer);
|
|
adapter->phy_info_timer.function = &e1000_update_phy_info;
|
|
adapter->phy_info_timer.data = (unsigned long)adapter;
|
|
|
|
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 = 1;
|
|
/* 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);
|
|
|
|
/* print bus type/speed/width info */
|
|
DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
|
|
((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""),
|
|
((hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
|
|
(hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
|
|
(hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
|
|
(hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
|
|
((hw->bus_width == e1000_bus_width_64) ? "64-bit" : "32-bit"));
|
|
|
|
printk("%pM\n", netdev->dev_addr);
|
|
|
|
/* reset the hardware with the new settings */
|
|
e1000_reset(adapter);
|
|
|
|
strcpy(netdev->name, "eth%d");
|
|
err = register_netdev(netdev);
|
|
if (err)
|
|
goto err_register;
|
|
|
|
/* carrier off reporting is important to ethtool even BEFORE open */
|
|
netif_carrier_off(netdev);
|
|
|
|
DPRINTK(PROBE, INFO, "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_sw_init:
|
|
iounmap(hw->hw_addr);
|
|
err_ioremap:
|
|
free_netdev(netdev);
|
|
err_alloc_etherdev:
|
|
pci_release_selected_regions(pdev, bars);
|
|
err_pci_reg:
|
|
err_dma:
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* 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. The could be caused by a
|
|
* Hot-Plug event, or because the driver is going to be removed from
|
|
* memory.
|
|
**/
|
|
|
|
static void __devexit 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;
|
|
|
|
set_bit(__E1000_DOWN, &adapter->flags);
|
|
del_timer_sync(&adapter->tx_fifo_stall_timer);
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
del_timer_sync(&adapter->phy_info_timer);
|
|
|
|
cancel_work_sync(&adapter->reset_task);
|
|
|
|
e1000_release_manageability(adapter);
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
e1000_phy_hw_reset(hw);
|
|
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
* Fields are initialized based on PCI device information and
|
|
* OS network device settings (MTU size).
|
|
**/
|
|
|
|
static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
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);
|
|
|
|
adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
|
|
hw->max_frame_size = 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)) {
|
|
DPRINTK(PROBE, ERR, "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);
|
|
|
|
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;
|
|
}
|
|
|
|
adapter->num_tx_queues = 1;
|
|
adapter->num_rx_queues = 1;
|
|
|
|
if (e1000_alloc_queues(adapter)) {
|
|
DPRINTK(PROBE, ERR, "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;
|
|
}
|
|
|
|
/**
|
|
* 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 __devinit 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;
|
|
}
|
|
|
|
/**
|
|
* 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 timer is started,
|
|
* and the stack is notified that the interface is ready.
|
|
**/
|
|
|
|
static 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;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
**/
|
|
|
|
static int e1000_close(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
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) &&
|
|
!(adapter->vlgrp &&
|
|
vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
|
|
e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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_82546) {
|
|
return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 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_buffer) * txdr->count;
|
|
txdr->buffer_info = vmalloc(size);
|
|
if (!txdr->buffer_info) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the transmit descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(txdr->buffer_info, 0, size);
|
|
|
|
/* round up to nearest 4K */
|
|
|
|
txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
|
|
txdr->size = ALIGN(txdr->size, 4096);
|
|
|
|
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
|
|
if (!txdr->desc) {
|
|
setup_tx_desc_die:
|
|
vfree(txdr->buffer_info);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the transmit descriptor ring\n");
|
|
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;
|
|
DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
|
|
"at %p\n", txdr->size, txdr->desc);
|
|
/* Try again, without freeing the previous */
|
|
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
|
|
/* Failed allocation, critical failure */
|
|
if (!txdr->desc) {
|
|
pci_free_consistent(pdev, txdr->size, olddesc, olddma);
|
|
goto setup_tx_desc_die;
|
|
}
|
|
|
|
if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
|
|
/* give up */
|
|
pci_free_consistent(pdev, txdr->size, txdr->desc,
|
|
txdr->dma);
|
|
pci_free_consistent(pdev, txdr->size, olddesc, olddma);
|
|
DPRINTK(PROBE, ERR,
|
|
"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 */
|
|
pci_free_consistent(pdev, txdr->size, olddesc, olddma);
|
|
}
|
|
}
|
|
memset(txdr->desc, 0, txdr->size);
|
|
|
|
txdr->next_to_use = 0;
|
|
txdr->next_to_clean = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
DPRINTK(PROBE, ERR,
|
|
"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;
|
|
}
|
|
|
|
/**
|
|
* 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 = 1;
|
|
|
|
ew32(TCTL, tctl);
|
|
|
|
}
|
|
|
|
/**
|
|
* 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_buffer) * rxdr->count;
|
|
rxdr->buffer_info = vmalloc(size);
|
|
if (!rxdr->buffer_info) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the receive descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(rxdr->buffer_info, 0, size);
|
|
|
|
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 = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
|
|
|
|
if (!rxdr->desc) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the receive descriptor ring\n");
|
|
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;
|
|
DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
|
|
"at %p\n", rxdr->size, rxdr->desc);
|
|
/* Try again, without freeing the previous */
|
|
rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
|
|
/* Failed allocation, critical failure */
|
|
if (!rxdr->desc) {
|
|
pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory "
|
|
"for the receive descriptor ring\n");
|
|
goto setup_rx_desc_die;
|
|
}
|
|
|
|
if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
|
|
/* give up */
|
|
pci_free_consistent(pdev, rxdr->size, rxdr->desc,
|
|
rxdr->dma);
|
|
pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate aligned memory "
|
|
"for the receive descriptor ring\n");
|
|
goto setup_rx_desc_die;
|
|
} else {
|
|
/* Free old allocation, new allocation was successful */
|
|
pci_free_consistent(pdev, 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;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
DPRINTK(PROBE, ERR,
|
|
"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;
|
|
}
|
|
|
|
/**
|
|
* 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_EN | 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_256:
|
|
rctl |= E1000_RCTL_SZ_256;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case E1000_RXBUFFER_512:
|
|
rctl |= E1000_RCTL_SZ_512;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case E1000_RXBUFFER_1024:
|
|
rctl |= E1000_RCTL_SZ_1024;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
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;
|
|
}
|
|
|
|
ew32(RCTL, rctl);
|
|
}
|
|
|
|
/**
|
|
* 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_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;
|
|
|
|
pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
|
|
|
|
tx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* 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]);
|
|
}
|
|
|
|
static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
|
|
struct e1000_buffer *buffer_info)
|
|
{
|
|
if (buffer_info->dma) {
|
|
if (buffer_info->mapped_as_page)
|
|
pci_unmap_page(adapter->pdev, buffer_info->dma,
|
|
buffer_info->length, PCI_DMA_TODEVICE);
|
|
else
|
|
pci_unmap_single(adapter->pdev, buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_TODEVICE);
|
|
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 */
|
|
}
|
|
|
|
/**
|
|
* 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_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);
|
|
}
|
|
|
|
size = sizeof(struct e1000_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 = 0;
|
|
|
|
writel(0, hw->hw_addr + tx_ring->tdh);
|
|
writel(0, hw->hw_addr + tx_ring->tdt);
|
|
}
|
|
|
|
/**
|
|
* 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]);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
|
|
|
|
rx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* 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]);
|
|
}
|
|
|
|
/**
|
|
* 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_buffer *buffer_info;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
unsigned long size;
|
|
unsigned int i;
|
|
|
|
/* Free all the Rx ring sk_buffs */
|
|
for (i = 0; i < rx_ring->count; i++) {
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
if (buffer_info->dma &&
|
|
adapter->clean_rx == e1000_clean_rx_irq) {
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
} else if (buffer_info->dma &&
|
|
adapter->clean_rx == e1000_clean_jumbo_rx_irq) {
|
|
pci_unmap_page(pdev, buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
}
|
|
|
|
buffer_info->dma = 0;
|
|
if (buffer_info->page) {
|
|
put_page(buffer_info->page);
|
|
buffer_info->page = NULL;
|
|
}
|
|
if (buffer_info->skb) {
|
|
dev_kfree_skb(buffer_info->skb);
|
|
buffer_info->skb = NULL;
|
|
}
|
|
}
|
|
|
|
/* there also may be some cached data from a chained receive */
|
|
if (rx_ring->rx_skb_top) {
|
|
dev_kfree_skb(rx_ring->rx_skb_top);
|
|
rx_ring->rx_skb_top = NULL;
|
|
}
|
|
|
|
size = sizeof(struct e1000_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);
|
|
}
|
|
|
|
/**
|
|
* 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]);
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
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));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
struct dev_addr_list *mc_ptr;
|
|
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) {
|
|
DPRINTK(PROBE, ERR, "memory allocation failed\n");
|
|
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 (adapter->vlgrp)
|
|
rctl |= E1000_RCTL_VFE;
|
|
}
|
|
|
|
if (netdev->uc.count > 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 adddress
|
|
* if there are not 14 addresses, go ahead and clear the filters
|
|
*/
|
|
i = 1;
|
|
if (use_uc)
|
|
list_for_each_entry(ha, &netdev->uc.list, list) {
|
|
if (i == rar_entries)
|
|
break;
|
|
e1000_rar_set(hw, ha->addr, i++);
|
|
}
|
|
|
|
WARN_ON(i == rar_entries);
|
|
|
|
mc_ptr = netdev->mc_list;
|
|
|
|
for (; i < rar_entries; i++) {
|
|
if (mc_ptr) {
|
|
e1000_rar_set(hw, mc_ptr->da_addr, i);
|
|
mc_ptr = mc_ptr->next;
|
|
} else {
|
|
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();
|
|
}
|
|
}
|
|
|
|
/* load any remaining addresses into the hash table */
|
|
|
|
for (; mc_ptr; mc_ptr = mc_ptr->next) {
|
|
u32 hash_reg, hash_bit, mta;
|
|
hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr);
|
|
hash_reg = (hash_value >> 5) & 0x7F;
|
|
hash_bit = hash_value & 0x1F;
|
|
mta = (1 << hash_bit);
|
|
mcarray[hash_reg] |= mta;
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/* Need to wait a few seconds after link up to get diagnostic information from
|
|
* the phy */
|
|
|
|
static void e1000_update_phy_info(unsigned long data)
|
|
{
|
|
struct e1000_adapter *adapter = (struct e1000_adapter *)data;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
e1000_phy_get_info(hw, &adapter->phy_info);
|
|
}
|
|
|
|
/**
|
|
* e1000_82547_tx_fifo_stall - Timer Call-back
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
**/
|
|
|
|
static void e1000_82547_tx_fifo_stall(unsigned long data)
|
|
{
|
|
struct e1000_adapter *adapter = (struct e1000_adapter *)data;
|
|
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)) {
|
|
mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static 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. 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->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;
|
|
}
|
|
|
|
/**
|
|
* e1000_watchdog - Timer Call-back
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
**/
|
|
static void e1000_watchdog(unsigned long data)
|
|
{
|
|
struct e1000_adapter *adapter = (struct e1000_adapter *)data;
|
|
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);
|
|
printk(KERN_INFO "e1000: %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" )));
|
|
|
|
/* tweak tx_queue_len according to speed/duplex
|
|
* and adjust the timeout factor */
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
adapter->tx_timeout_factor = 1;
|
|
switch (adapter->link_speed) {
|
|
case SPEED_10:
|
|
txb2b = false;
|
|
netdev->tx_queue_len = 10;
|
|
adapter->tx_timeout_factor = 16;
|
|
break;
|
|
case SPEED_100:
|
|
txb2b = false;
|
|
netdev->tx_queue_len = 100;
|
|
/* 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))
|
|
mod_timer(&adapter->phy_info_timer,
|
|
round_jiffies(jiffies + 2 * HZ));
|
|
adapter->smartspeed = 0;
|
|
}
|
|
} else {
|
|
if (netif_carrier_ok(netdev)) {
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
printk(KERN_INFO "e1000: %s NIC Link is Down\n",
|
|
netdev->name);
|
|
netif_carrier_off(netdev);
|
|
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
mod_timer(&adapter->phy_info_timer,
|
|
round_jiffies(jiffies + 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);
|
|
/* return immediately since reset is imminent */
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
|
|
/* Reset the timer */
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
mod_timer(&adapter->watchdog_timer,
|
|
round_jiffies(jiffies + 2 * HZ));
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
#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_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)
|
|
{
|
|
struct e1000_context_desc *context_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int i;
|
|
u32 cmd_length = 0;
|
|
u16 ipcse = 0, tucse, mss;
|
|
u8 ipcss, ipcso, tucss, tucso, hdr_len;
|
|
int err;
|
|
|
|
if (skb_is_gso(skb)) {
|
|
if (skb_header_cloned(skb)) {
|
|
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
|
|
mss = skb_shinfo(skb)->gso_size;
|
|
if (skb->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->protocol == htons(ETH_P_IPV6)) {
|
|
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;
|
|
}
|
|
|
|
static bool e1000_tx_csum(struct e1000_adapter *adapter,
|
|
struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
|
|
{
|
|
struct e1000_context_desc *context_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int i;
|
|
u8 css;
|
|
u32 cmd_len = E1000_TXD_CMD_DEXT;
|
|
|
|
if (skb->ip_summed != CHECKSUM_PARTIAL)
|
|
return false;
|
|
|
|
switch (skb->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()))
|
|
DPRINTK(DRV, WARNING,
|
|
"checksum_partial proto=%x!\n", skb->protocol);
|
|
break;
|
|
}
|
|
|
|
css = skb_transport_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;
|
|
}
|
|
|
|
#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_buffer *buffer_info;
|
|
unsigned int len = skb_headlen(skb);
|
|
unsigned int offset = 0, size, count = 0, i;
|
|
unsigned int f;
|
|
|
|
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 = 0;
|
|
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 = pci_map_single(pdev, skb->data + offset,
|
|
size, PCI_DMA_TODEVICE);
|
|
if (pci_dma_mapping_error(pdev, 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++) {
|
|
struct skb_frag_struct *frag;
|
|
|
|
frag = &skb_shinfo(skb)->frags[f];
|
|
len = frag->size;
|
|
offset = frag->page_offset;
|
|
|
|
while (len) {
|
|
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. */
|
|
if (unlikely(adapter->pcix_82544 &&
|
|
!((unsigned long)(page_to_phys(frag->page) + offset
|
|
+ size - 1) & 4) &&
|
|
size > 4))
|
|
size -= 4;
|
|
|
|
buffer_info->length = size;
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->mapped_as_page = true;
|
|
buffer_info->dma = pci_map_page(pdev, frag->page,
|
|
offset, size,
|
|
PCI_DMA_TODEVICE);
|
|
if (pci_dma_mapping_error(pdev, buffer_info->dma))
|
|
goto dma_error;
|
|
buffer_info->next_to_watch = i;
|
|
|
|
len -= size;
|
|
offset += size;
|
|
count++;
|
|
}
|
|
}
|
|
|
|
tx_ring->buffer_info[i].skb = skb;
|
|
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;
|
|
count--;
|
|
|
|
while (count >= 0) {
|
|
count--;
|
|
i--;
|
|
if (i < 0)
|
|
i += tx_ring->count;
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
e1000_unmap_and_free_tx_resource(adapter, buffer_info);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void e1000_tx_queue(struct e1000_adapter *adapter,
|
|
struct e1000_tx_ring *tx_ring, int tx_flags,
|
|
int count)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct e1000_tx_desc *tx_desc = NULL;
|
|
struct e1000_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);
|
|
}
|
|
|
|
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);
|
|
|
|
/* 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;
|
|
writel(i, hw->hw_addr + tx_ring->tdt);
|
|
/* we need this if more than one processor can write to our tail
|
|
* at a time, it syncronizes IO on IA64/Altix systems */
|
|
mmiowb();
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
|
|
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->len - skb->data_len;
|
|
unsigned int nr_frags;
|
|
unsigned int mss;
|
|
int count = 0;
|
|
int tso;
|
|
unsigned int f;
|
|
|
|
/* 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;
|
|
|
|
if (unlikely(skb->len <= 0)) {
|
|
dev_kfree_skb_any(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)) {
|
|
DPRINTK(DRV, ERR,
|
|
"__pskb_pull_tail failed.\n");
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
len = skb->len - skb->data_len;
|
|
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_shinfo(skb)->frags[f].size,
|
|
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)) {
|
|
if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
|
|
netif_stop_queue(netdev);
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
mod_timer(&adapter->tx_fifo_stall_timer,
|
|
jiffies + 1);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
}
|
|
|
|
if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
|
|
tx_flags |= E1000_TX_FLAGS_VLAN;
|
|
tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
|
|
}
|
|
|
|
first = tx_ring->next_to_use;
|
|
|
|
tso = e1000_tso(adapter, tx_ring, skb);
|
|
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 = 1;
|
|
tx_flags |= E1000_TX_FLAGS_TSO;
|
|
} else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
|
|
tx_flags |= E1000_TX_FLAGS_CSUM;
|
|
|
|
if (likely(skb->protocol == htons(ETH_P_IP)))
|
|
tx_flags |= E1000_TX_FLAGS_IPV4;
|
|
|
|
count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd,
|
|
nr_frags, mss);
|
|
|
|
if (count) {
|
|
e1000_tx_queue(adapter, tx_ring, tx_flags, count);
|
|
/* Make sure there is space in the ring for the next send. */
|
|
e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
|
|
|
|
} else {
|
|
dev_kfree_skb_any(skb);
|
|
tx_ring->buffer_info[first].time_stamp = 0;
|
|
tx_ring->next_to_use = first;
|
|
}
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
static void e1000_reset_task(struct work_struct *work)
|
|
{
|
|
struct e1000_adapter *adapter =
|
|
container_of(work, struct e1000_adapter, reset_task);
|
|
|
|
e1000_reinit_locked(adapter);
|
|
}
|
|
|
|
/**
|
|
* 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 timer callback.
|
|
**/
|
|
|
|
static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
|
|
{
|
|
/* only return the current stats */
|
|
return &netdev->stats;
|
|
}
|
|
|
|
/**
|
|
* 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 + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
|
|
|
|
if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
|
|
(max_frame > MAX_JUMBO_FRAME_SIZE)) {
|
|
DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* 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)) {
|
|
DPRINTK(PROBE, ERR, "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))
|
|
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_256)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_256;
|
|
else if (max_frame <= E1000_RXBUFFER_512)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_512;
|
|
else if (max_frame <= E1000_RXBUFFER_1024)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_1024;
|
|
else 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;
|
|
|
|
printk(KERN_INFO "e1000: %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;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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) || test_bit(__E1000_DOWN, &adapter->flags)))
|
|
return IRQ_NONE; /* Not our interrupt */
|
|
|
|
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))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 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;
|
|
}
|
|
|
|
/**
|
|
* 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(napi);
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
e1000_irq_enable(adapter);
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
/**
|
|
* 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_buffer *buffer_info;
|
|
unsigned int i, eop;
|
|
unsigned int count = 0;
|
|
unsigned int total_tx_bytes=0, total_tx_packets=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;
|
|
for ( ; !cleaned; count++) {
|
|
tx_desc = E1000_TX_DESC(*tx_ring, i);
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
cleaned = (i == eop);
|
|
|
|
if (cleaned) {
|
|
struct sk_buff *skb = buffer_info->skb;
|
|
unsigned int segs, bytecount;
|
|
segs = skb_shinfo(skb)->gso_segs ?: 1;
|
|
/* multiply data chunks by size of headers */
|
|
bytecount = ((segs - 1) * skb_headlen(skb)) +
|
|
skb->len;
|
|
total_tx_packets += segs;
|
|
total_tx_bytes += bytecount;
|
|
}
|
|
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);
|
|
}
|
|
|
|
tx_ring->next_to_clean = i;
|
|
|
|
#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 */
|
|
DPRINTK(DRV, ERR, "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) /
|
|
sizeof(struct e1000_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);
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* 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->ip_summed = CHECKSUM_NONE;
|
|
|
|
/* 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++;
|
|
}
|
|
|
|
/**
|
|
* e1000_consume_page - helper function
|
|
**/
|
|
static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
|
|
u16 length)
|
|
{
|
|
bi->page = NULL;
|
|
skb->len += length;
|
|
skb->data_len += length;
|
|
skb->truesize += length;
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
if (unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP))) {
|
|
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
|
|
le16_to_cpu(vlan) &
|
|
E1000_RXD_SPC_VLAN_MASK);
|
|
} else {
|
|
netif_receive_skb(skb);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct e1000_rx_desc *rx_desc, *next_rxd;
|
|
struct e1000_buffer *buffer_info, *next_buffer;
|
|
unsigned long irq_flags;
|
|
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)++;
|
|
|
|
status = rx_desc->status;
|
|
skb = buffer_info->skb;
|
|
buffer_info->skb = 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++;
|
|
pci_unmap_page(pdev, buffer_info->dma, buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
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 last_byte = *(skb->data + length - 1);
|
|
if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
|
|
last_byte)) {
|
|
spin_lock_irqsave(&adapter->stats_lock,
|
|
irq_flags);
|
|
e1000_tbi_adjust_stats(hw, &adapter->stats,
|
|
length, skb->data);
|
|
spin_unlock_irqrestore(&adapter->stats_lock,
|
|
irq_flags);
|
|
length--;
|
|
} else {
|
|
/* recycle both page and skb */
|
|
buffer_info->skb = skb;
|
|
/* 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
|
|
if (!(status & E1000_RXD_STAT_EOP)) {
|
|
/* this descriptor is only the beginning (or middle) */
|
|
if (!rxtop) {
|
|
/* this is the beginning of a chain */
|
|
rxtop = skb;
|
|
skb_fill_page_desc(rxtop, 0, buffer_info->page,
|
|
0, length);
|
|
} else {
|
|
/* this is the middle of a chain */
|
|
skb_fill_page_desc(rxtop,
|
|
skb_shinfo(rxtop)->nr_frags,
|
|
buffer_info->page, 0, length);
|
|
/* re-use the skb, only consumed the page */
|
|
buffer_info->skb = skb;
|
|
}
|
|
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->page, 0, length);
|
|
/* re-use the current skb, we only consumed the
|
|
* page */
|
|
buffer_info->skb = skb;
|
|
skb = rxtop;
|
|
rxtop = NULL;
|
|
e1000_consume_page(buffer_info, skb, length);
|
|
} else {
|
|
/* no chain, got EOP, this buf is the packet
|
|
* copybreak to save the put_page/alloc_page */
|
|
if (length <= copybreak &&
|
|
skb_tailroom(skb) >= length) {
|
|
u8 *vaddr;
|
|
vaddr = kmap_atomic(buffer_info->page,
|
|
KM_SKB_DATA_SOFTIRQ);
|
|
memcpy(skb_tail_pointer(skb), vaddr, length);
|
|
kunmap_atomic(vaddr,
|
|
KM_SKB_DATA_SOFTIRQ);
|
|
/* re-use the page, so don't erase
|
|
* buffer_info->page */
|
|
skb_put(skb, length);
|
|
} else {
|
|
skb_fill_page_desc(skb, 0,
|
|
buffer_info->page, 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);
|
|
|
|
pskb_trim(skb, skb->len - 4);
|
|
|
|
/* probably a little skewed due to removing CRC */
|
|
total_rx_bytes += skb->len;
|
|
total_rx_packets++;
|
|
|
|
/* eth type trans needs skb->data to point to something */
|
|
if (!pskb_may_pull(skb, ETH_HLEN)) {
|
|
DPRINTK(DRV, ERR, "pskb_may_pull failed.\n");
|
|
dev_kfree_skb(skb);
|
|
goto next_desc;
|
|
}
|
|
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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 e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct e1000_rx_desc *rx_desc, *next_rxd;
|
|
struct e1000_buffer *buffer_info, *next_buffer;
|
|
unsigned long flags;
|
|
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)++;
|
|
|
|
status = rx_desc->status;
|
|
skb = buffer_info->skb;
|
|
buffer_info->skb = NULL;
|
|
|
|
prefetch(skb->data - NET_IP_ALIGN);
|
|
|
|
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++;
|
|
pci_unmap_single(pdev, buffer_info->dma, buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
buffer_info->dma = 0;
|
|
|
|
length = le16_to_cpu(rx_desc->length);
|
|
/* !EOP means multiple descriptors were used to store a single
|
|
* packet, also make sure the frame isn't just CRC only */
|
|
if (unlikely(!(status & E1000_RXD_STAT_EOP) || (length <= 4))) {
|
|
/* All receives must fit into a single buffer */
|
|
E1000_DBG("%s: Receive packet consumed multiple"
|
|
" buffers\n", netdev->name);
|
|
/* recycle */
|
|
buffer_info->skb = skb;
|
|
goto next_desc;
|
|
}
|
|
|
|
if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
|
|
u8 last_byte = *(skb->data + length - 1);
|
|
if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
|
|
last_byte)) {
|
|
spin_lock_irqsave(&adapter->stats_lock, flags);
|
|
e1000_tbi_adjust_stats(hw, &adapter->stats,
|
|
length, skb->data);
|
|
spin_unlock_irqrestore(&adapter->stats_lock,
|
|
flags);
|
|
length--;
|
|
} else {
|
|
/* recycle */
|
|
buffer_info->skb = skb;
|
|
goto next_desc;
|
|
}
|
|
}
|
|
|
|
/* adjust length to remove Ethernet CRC, this must be
|
|
* done after the TBI_ACCEPT workaround above */
|
|
length -= 4;
|
|
|
|
/* probably a little skewed due to removing CRC */
|
|
total_rx_bytes += length;
|
|
total_rx_packets++;
|
|
|
|
/* code added for copybreak, this should improve
|
|
* performance for small packets with large amounts
|
|
* of reassembly being done in the stack */
|
|
if (length < copybreak) {
|
|
struct sk_buff *new_skb =
|
|
netdev_alloc_skb_ip_align(netdev, length);
|
|
if (new_skb) {
|
|
skb_copy_to_linear_data_offset(new_skb,
|
|
-NET_IP_ALIGN,
|
|
(skb->data -
|
|
NET_IP_ALIGN),
|
|
(length +
|
|
NET_IP_ALIGN));
|
|
/* save the skb in buffer_info as good */
|
|
buffer_info->skb = skb;
|
|
skb = new_skb;
|
|
}
|
|
/* else just continue with the old one */
|
|
}
|
|
/* end copybreak code */
|
|
skb_put(skb, length);
|
|
|
|
/* Receive Checksum Offload */
|
|
e1000_rx_checksum(adapter,
|
|
(u32)(status) |
|
|
((u32)(rx_desc->errors) << 24),
|
|
le16_to_cpu(rx_desc->csum), skb);
|
|
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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 net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct e1000_rx_desc *rx_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
struct sk_buff *skb;
|
|
unsigned int i;
|
|
unsigned int bufsz = 256 - 16 /*for skb_reserve */ ;
|
|
|
|
i = rx_ring->next_to_use;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
|
|
while (cleaned_count--) {
|
|
skb = buffer_info->skb;
|
|
if (skb) {
|
|
skb_trim(skb, 0);
|
|
goto check_page;
|
|
}
|
|
|
|
skb = netdev_alloc_skb_ip_align(netdev, bufsz);
|
|
if (unlikely(!skb)) {
|
|
/* 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, skb->data, bufsz)) {
|
|
struct sk_buff *oldskb = skb;
|
|
DPRINTK(PROBE, ERR, "skb align check failed: %u bytes "
|
|
"at %p\n", bufsz, skb->data);
|
|
/* Try again, without freeing the previous */
|
|
skb = netdev_alloc_skb_ip_align(netdev, bufsz);
|
|
/* Failed allocation, critical failure */
|
|
if (!skb) {
|
|
dev_kfree_skb(oldskb);
|
|
adapter->alloc_rx_buff_failed++;
|
|
break;
|
|
}
|
|
|
|
if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
|
|
/* give up */
|
|
dev_kfree_skb(skb);
|
|
dev_kfree_skb(oldskb);
|
|
break; /* while (cleaned_count--) */
|
|
}
|
|
|
|
/* Use new allocation */
|
|
dev_kfree_skb(oldskb);
|
|
}
|
|
buffer_info->skb = skb;
|
|
buffer_info->length = adapter->rx_buffer_len;
|
|
check_page:
|
|
/* allocate a new page if necessary */
|
|
if (!buffer_info->page) {
|
|
buffer_info->page = alloc_page(GFP_ATOMIC);
|
|
if (unlikely(!buffer_info->page)) {
|
|
adapter->alloc_rx_buff_failed++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!buffer_info->dma)
|
|
buffer_info->dma = pci_map_page(pdev,
|
|
buffer_info->page, 0,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct e1000_rx_desc *rx_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
struct sk_buff *skb;
|
|
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--) {
|
|
skb = buffer_info->skb;
|
|
if (skb) {
|
|
skb_trim(skb, 0);
|
|
goto map_skb;
|
|
}
|
|
|
|
skb = netdev_alloc_skb_ip_align(netdev, bufsz);
|
|
if (unlikely(!skb)) {
|
|
/* 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, skb->data, bufsz)) {
|
|
struct sk_buff *oldskb = skb;
|
|
DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
|
|
"at %p\n", bufsz, skb->data);
|
|
/* Try again, without freeing the previous */
|
|
skb = netdev_alloc_skb_ip_align(netdev, bufsz);
|
|
/* Failed allocation, critical failure */
|
|
if (!skb) {
|
|
dev_kfree_skb(oldskb);
|
|
adapter->alloc_rx_buff_failed++;
|
|
break;
|
|
}
|
|
|
|
if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
|
|
/* give up */
|
|
dev_kfree_skb(skb);
|
|
dev_kfree_skb(oldskb);
|
|
adapter->alloc_rx_buff_failed++;
|
|
break; /* while !buffer_info->skb */
|
|
}
|
|
|
|
/* Use new allocation */
|
|
dev_kfree_skb(oldskb);
|
|
}
|
|
buffer_info->skb = skb;
|
|
buffer_info->length = adapter->rx_buffer_len;
|
|
map_skb:
|
|
buffer_info->dma = pci_map_single(pdev,
|
|
skb->data,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
/*
|
|
* 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)) {
|
|
DPRINTK(RX_ERR, ERR,
|
|
"dma align check failed: %u bytes at %p\n",
|
|
adapter->rx_buffer_len,
|
|
(void *)(unsigned long)buffer_info->dma);
|
|
dev_kfree_skb(skb);
|
|
buffer_info->skb = NULL;
|
|
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_buffer_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
buffer_info->dma = 0;
|
|
|
|
adapter->alloc_rx_buff_failed++;
|
|
break; /* while !buffer_info->skb */
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
u16 spddplx;
|
|
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 {
|
|
if (mii_reg & 0x40)
|
|
spddplx = SPEED_1000;
|
|
else if (mii_reg & 0x2000)
|
|
spddplx = SPEED_100;
|
|
else
|
|
spddplx = SPEED_10;
|
|
spddplx += (mii_reg & 0x100)
|
|
? DUPLEX_FULL :
|
|
DUPLEX_HALF;
|
|
retval = e1000_set_spd_dplx(adapter,
|
|
spddplx);
|
|
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;
|
|
}
|
|
|
|
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)
|
|
DPRINTK(PROBE, ERR, "Error in setting MWI\n");
|
|
}
|
|
|
|
void e1000_pci_clear_mwi(struct e1000_hw *hw)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
|
|
pci_clear_mwi(adapter->pdev);
|
|
}
|
|
|
|
int e1000_pcix_get_mmrbc(struct e1000_hw *hw)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
return pcix_get_mmrbc(adapter->pdev);
|
|
}
|
|
|
|
void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
pcix_set_mmrbc(adapter->pdev, mmrbc);
|
|
}
|
|
|
|
void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value)
|
|
{
|
|
outl(value, port);
|
|
}
|
|
|
|
static void e1000_vlan_rx_register(struct net_device *netdev,
|
|
struct vlan_group *grp)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 ctrl, rctl;
|
|
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
e1000_irq_disable(adapter);
|
|
adapter->vlgrp = grp;
|
|
|
|
if (grp) {
|
|
/* enable VLAN tag insert/strip */
|
|
ctrl = er32(CTRL);
|
|
ctrl |= E1000_CTRL_VME;
|
|
ew32(CTRL, ctrl);
|
|
|
|
/* enable VLAN receive filtering */
|
|
rctl = er32(RCTL);
|
|
rctl &= ~E1000_RCTL_CFIEN;
|
|
if (!(netdev->flags & IFF_PROMISC))
|
|
rctl |= E1000_RCTL_VFE;
|
|
ew32(RCTL, rctl);
|
|
e1000_update_mng_vlan(adapter);
|
|
} else {
|
|
/* disable VLAN tag insert/strip */
|
|
ctrl = er32(CTRL);
|
|
ctrl &= ~E1000_CTRL_VME;
|
|
ew32(CTRL, ctrl);
|
|
|
|
/* disable VLAN receive filtering */
|
|
rctl = er32(RCTL);
|
|
rctl &= ~E1000_RCTL_VFE;
|
|
ew32(RCTL, rctl);
|
|
|
|
if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
|
|
e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
|
|
adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
|
|
}
|
|
}
|
|
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
e1000_irq_enable(adapter);
|
|
}
|
|
|
|
static void e1000_vlan_rx_add_vid(struct net_device *netdev, 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;
|
|
/* 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);
|
|
}
|
|
|
|
static void e1000_vlan_rx_kill_vid(struct net_device *netdev, 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);
|
|
vlan_group_set_device(adapter->vlgrp, vid, NULL);
|
|
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);
|
|
}
|
|
|
|
static void e1000_restore_vlan(struct e1000_adapter *adapter)
|
|
{
|
|
e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
|
|
|
|
if (adapter->vlgrp) {
|
|
u16 vid;
|
|
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
|
|
if (!vlan_group_get_device(adapter->vlgrp, vid))
|
|
continue;
|
|
e1000_vlan_rx_add_vid(adapter->netdev, vid);
|
|
}
|
|
}
|
|
}
|
|
|
|
int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
hw->autoneg = 0;
|
|
|
|
/* Fiber NICs only allow 1000 gbps Full duplex */
|
|
if ((hw->media_type == e1000_media_type_fiber) &&
|
|
spddplx != (SPEED_1000 + DUPLEX_FULL)) {
|
|
DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (spddplx) {
|
|
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:
|
|
DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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)) {
|
|
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);
|
|
|
|
/* turn on all-multi mode if wake on multicast is enabled */
|
|
if (wufc & E1000_WUFC_MC) {
|
|
rctl = er32(RCTL);
|
|
rctl |= E1000_RCTL_MPE;
|
|
ew32(RCTL, rctl);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#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;
|
|
}
|
|
|
|
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);
|
|
|
|
if (adapter->need_ioport)
|
|
err = pci_enable_device(pdev);
|
|
else
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err) {
|
|
printk(KERN_ERR "e1000: 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;
|
|
}
|
|
#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);
|
|
}
|
|
}
|
|
|
|
#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);
|
|
|
|
disable_irq(adapter->pdev->irq);
|
|
e1000_intr(adapter->pdev->irq, netdev);
|
|
enable_irq(adapter->pdev->irq);
|
|
}
|
|
#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;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
printk(KERN_ERR "e1000: 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;
|
|
}
|
|
|
|
/**
|
|
* 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)) {
|
|
printk("e1000: can't bring device back up after reset\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
netif_device_attach(netdev);
|
|
}
|
|
|
|
/* e1000_main.c */
|