4e48a2b91d
Fix kernel panic with 82541 LOM when using a 100M cable Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
3179 lines
86 KiB
C
3179 lines
86 KiB
C
/*******************************************************************************
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Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that 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., 59
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Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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The full GNU General Public License is included in this distribution in the
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file called LICENSE.
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Contact Information:
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Linux NICS <linux.nics@intel.com>
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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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/* Change Log
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* 5.3.12 6/7/04
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* - kcompat NETIF_MSG for older kernels (2.4.9) <sean.p.mcdermott@intel.com>
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* - if_mii support and associated kcompat for older kernels
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* - More errlogging support from Jon Mason <jonmason@us.ibm.com>
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* - Fix TSO issues on PPC64 machines -- Jon Mason <jonmason@us.ibm.com>
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*
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* 5.7.1 12/16/04
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* - Resurrect 82547EI/GI related fix in e1000_intr to avoid deadlocks. This
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* fix was removed as it caused system instability. The suspected cause of
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* this is the called to e1000_irq_disable in e1000_intr. Inlined the
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* required piece of e1000_irq_disable into e1000_intr - Anton Blanchard
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* 5.7.0 12/10/04
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* - include fix to the condition that determines when to quit NAPI - Robert Olsson
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* - use netif_poll_{disable/enable} to synchronize between NAPI and i/f up/down
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* 5.6.5 11/01/04
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* - Enabling NETIF_F_SG without checksum offload is illegal -
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John Mason <jdmason@us.ibm.com>
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* 5.6.3 10/26/04
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* - Remove redundant initialization - Jamal Hadi
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* - Reset buffer_info->dma in tx resource cleanup logic
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* 5.6.2 10/12/04
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* - Avoid filling tx_ring completely - shemminger@osdl.org
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* - Replace schedule_timeout() with msleep()/msleep_interruptible() -
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* nacc@us.ibm.com
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* - Sparse cleanup - shemminger@osdl.org
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* - Fix tx resource cleanup logic
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* - LLTX support - ak@suse.de and hadi@cyberus.ca
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*/
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char e1000_driver_name[] = "e1000";
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char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
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#ifndef CONFIG_E1000_NAPI
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#define DRIVERNAPI
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#else
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#define DRIVERNAPI "-NAPI"
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#endif
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#define DRV_VERSION "5.7.6-k2"DRIVERNAPI
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char e1000_driver_version[] = DRV_VERSION;
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char e1000_copyright[] = "Copyright (c) 1999-2004 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(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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/* 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_reset(struct e1000_adapter *adapter);
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int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
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int e1000_setup_tx_resources(struct e1000_adapter *adapter);
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int e1000_setup_rx_resources(struct e1000_adapter *adapter);
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void e1000_free_tx_resources(struct e1000_adapter *adapter);
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void e1000_free_rx_resources(struct e1000_adapter *adapter);
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void e1000_update_stats(struct e1000_adapter *adapter);
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/* Local Function Prototypes */
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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_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_tx_ring(struct e1000_adapter *adapter);
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static void e1000_clean_rx_ring(struct e1000_adapter *adapter);
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static void e1000_set_multi(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_watchdog_task(struct e1000_adapter *adapter);
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static void e1000_82547_tx_fifo_stall(unsigned long data);
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static int e1000_xmit_frame(struct sk_buff *skb, 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, struct pt_regs *regs);
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static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter);
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#ifdef CONFIG_E1000_NAPI
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static int e1000_clean(struct net_device *netdev, int *budget);
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static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
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int *work_done, int work_to_do);
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#else
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static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter);
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#endif
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static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter);
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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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void e1000_set_ethtool_ops(struct net_device *netdev);
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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_tx_timeout_task(struct net_device *dev);
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static void e1000_smartspeed(struct e1000_adapter *adapter);
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static inline 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, uint16_t vid);
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static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
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static void e1000_restore_vlan(struct e1000_adapter *adapter);
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static int e1000_notify_reboot(struct notifier_block *, unsigned long event, void *ptr);
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static int e1000_suspend(struct pci_dev *pdev, uint32_t state);
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#ifdef CONFIG_PM
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static int e1000_resume(struct pci_dev *pdev);
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#endif
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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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struct notifier_block e1000_notifier_reboot = {
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.notifier_call = e1000_notify_reboot,
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.next = NULL,
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.priority = 0
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};
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/* Exported from other modules */
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extern void e1000_check_options(struct e1000_adapter *adapter);
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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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/* Power Managment Hooks */
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#ifdef CONFIG_PM
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.suspend = e1000_suspend,
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.resume = e1000_resume
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#endif
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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
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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_module_init(&e1000_driver);
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if(ret >= 0) {
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register_reboot_notifier(&e1000_notifier_reboot);
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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
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e1000_exit_module(void)
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{
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unregister_reboot_notifier(&e1000_notifier_reboot);
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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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/**
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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 inline void
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e1000_irq_disable(struct e1000_adapter *adapter)
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{
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atomic_inc(&adapter->irq_sem);
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E1000_WRITE_REG(&adapter->hw, IMC, ~0);
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E1000_WRITE_FLUSH(&adapter->hw);
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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 inline void
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e1000_irq_enable(struct e1000_adapter *adapter)
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{
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if(likely(atomic_dec_and_test(&adapter->irq_sem))) {
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E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
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E1000_WRITE_FLUSH(&adapter->hw);
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}
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}
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int
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e1000_up(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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int err;
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/* hardware has been reset, we need to reload some things */
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/* Reset the PHY if it was previously powered down */
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if(adapter->hw.media_type == e1000_media_type_copper) {
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uint16_t mii_reg;
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e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
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if(mii_reg & MII_CR_POWER_DOWN)
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e1000_phy_reset(&adapter->hw);
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}
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e1000_set_multi(netdev);
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e1000_restore_vlan(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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e1000_alloc_rx_buffers(adapter);
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#ifdef CONFIG_PCI_MSI
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if(adapter->hw.mac_type > e1000_82547_rev_2) {
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adapter->have_msi = TRUE;
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if((err = pci_enable_msi(adapter->pdev))) {
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DPRINTK(PROBE, ERR,
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"Unable to allocate MSI interrupt Error: %d\n", err);
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adapter->have_msi = FALSE;
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}
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}
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#endif
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if((err = request_irq(adapter->pdev->irq, &e1000_intr,
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SA_SHIRQ | SA_SAMPLE_RANDOM,
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netdev->name, netdev)))
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return err;
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mod_timer(&adapter->watchdog_timer, jiffies);
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#ifdef CONFIG_E1000_NAPI
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netif_poll_enable(netdev);
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#endif
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e1000_irq_enable(adapter);
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return 0;
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}
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void
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e1000_down(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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e1000_irq_disable(adapter);
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free_irq(adapter->pdev->irq, netdev);
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#ifdef CONFIG_PCI_MSI
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if(adapter->hw.mac_type > e1000_82547_rev_2 &&
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adapter->have_msi == TRUE)
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pci_disable_msi(adapter->pdev);
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#endif
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del_timer_sync(&adapter->tx_fifo_stall_timer);
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del_timer_sync(&adapter->watchdog_timer);
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del_timer_sync(&adapter->phy_info_timer);
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#ifdef CONFIG_E1000_NAPI
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netif_poll_disable(netdev);
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#endif
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adapter->link_speed = 0;
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adapter->link_duplex = 0;
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netif_carrier_off(netdev);
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netif_stop_queue(netdev);
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e1000_reset(adapter);
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e1000_clean_tx_ring(adapter);
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e1000_clean_rx_ring(adapter);
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/* If WoL is not enabled
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* Power down the PHY so no link is implied when interface is down */
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if(!adapter->wol && adapter->hw.media_type == e1000_media_type_copper) {
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uint16_t mii_reg;
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e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
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mii_reg |= MII_CR_POWER_DOWN;
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e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
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mdelay(1);
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}
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}
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void
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e1000_reset(struct e1000_adapter *adapter)
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{
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uint32_t pba;
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/* Repartition Pba for greater than 9k mtu
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* To take effect CTRL.RST is required.
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*/
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if(adapter->hw.mac_type < e1000_82547) {
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if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
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pba = E1000_PBA_40K;
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else
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pba = E1000_PBA_48K;
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} else {
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if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
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pba = E1000_PBA_22K;
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else
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pba = E1000_PBA_30K;
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adapter->tx_fifo_head = 0;
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adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
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adapter->tx_fifo_size =
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(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
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atomic_set(&adapter->tx_fifo_stall, 0);
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}
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E1000_WRITE_REG(&adapter->hw, PBA, pba);
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/* flow control settings */
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adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) -
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E1000_FC_HIGH_DIFF;
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adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) -
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E1000_FC_LOW_DIFF;
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adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
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adapter->hw.fc_send_xon = 1;
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adapter->hw.fc = adapter->hw.original_fc;
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e1000_reset_hw(&adapter->hw);
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if(adapter->hw.mac_type >= e1000_82544)
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E1000_WRITE_REG(&adapter->hw, WUC, 0);
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if(e1000_init_hw(&adapter->hw))
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DPRINTK(PROBE, ERR, "Hardware Error\n");
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/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
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E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
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e1000_reset_adaptive(&adapter->hw);
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e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
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}
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/**
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* e1000_probe - Device Initialization Routine
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* @pdev: PCI device information struct
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* @ent: entry in e1000_pci_tbl
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*
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* Returns 0 on success, negative on failure
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*
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* e1000_probe initializes an adapter identified by a pci_dev structure.
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* The OS initialization, configuring of the adapter private structure,
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* and a hardware reset occur.
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**/
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static int __devinit
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|
e1000_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *netdev;
|
|
struct e1000_adapter *adapter;
|
|
static int cards_found = 0;
|
|
unsigned long mmio_start;
|
|
int mmio_len;
|
|
int pci_using_dac;
|
|
int i;
|
|
int err;
|
|
uint16_t eeprom_data;
|
|
uint16_t eeprom_apme_mask = E1000_EEPROM_APME;
|
|
|
|
if((err = pci_enable_device(pdev)))
|
|
return err;
|
|
|
|
if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
|
|
pci_using_dac = 1;
|
|
} else {
|
|
if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
|
|
E1000_ERR("No usable DMA configuration, aborting\n");
|
|
return err;
|
|
}
|
|
pci_using_dac = 0;
|
|
}
|
|
|
|
if((err = pci_request_regions(pdev, e1000_driver_name)))
|
|
return err;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
netdev = alloc_etherdev(sizeof(struct e1000_adapter));
|
|
if(!netdev) {
|
|
err = -ENOMEM;
|
|
goto err_alloc_etherdev;
|
|
}
|
|
|
|
SET_MODULE_OWNER(netdev);
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
|
|
pci_set_drvdata(pdev, netdev);
|
|
adapter = netdev->priv;
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
adapter->hw.back = adapter;
|
|
adapter->msg_enable = (1 << debug) - 1;
|
|
|
|
mmio_start = pci_resource_start(pdev, BAR_0);
|
|
mmio_len = pci_resource_len(pdev, BAR_0);
|
|
|
|
adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
|
|
if(!adapter->hw.hw_addr) {
|
|
err = -EIO;
|
|
goto err_ioremap;
|
|
}
|
|
|
|
for(i = BAR_1; i <= BAR_5; i++) {
|
|
if(pci_resource_len(pdev, i) == 0)
|
|
continue;
|
|
if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
|
|
adapter->hw.io_base = pci_resource_start(pdev, i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
netdev->open = &e1000_open;
|
|
netdev->stop = &e1000_close;
|
|
netdev->hard_start_xmit = &e1000_xmit_frame;
|
|
netdev->get_stats = &e1000_get_stats;
|
|
netdev->set_multicast_list = &e1000_set_multi;
|
|
netdev->set_mac_address = &e1000_set_mac;
|
|
netdev->change_mtu = &e1000_change_mtu;
|
|
netdev->do_ioctl = &e1000_ioctl;
|
|
e1000_set_ethtool_ops(netdev);
|
|
netdev->tx_timeout = &e1000_tx_timeout;
|
|
netdev->watchdog_timeo = 5 * HZ;
|
|
#ifdef CONFIG_E1000_NAPI
|
|
netdev->poll = &e1000_clean;
|
|
netdev->weight = 64;
|
|
#endif
|
|
netdev->vlan_rx_register = e1000_vlan_rx_register;
|
|
netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
|
|
netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
netdev->poll_controller = e1000_netpoll;
|
|
#endif
|
|
strcpy(netdev->name, pci_name(pdev));
|
|
|
|
netdev->mem_start = mmio_start;
|
|
netdev->mem_end = mmio_start + mmio_len;
|
|
netdev->base_addr = adapter->hw.io_base;
|
|
|
|
adapter->bd_number = cards_found;
|
|
|
|
/* setup the private structure */
|
|
|
|
if((err = e1000_sw_init(adapter)))
|
|
goto err_sw_init;
|
|
|
|
if(adapter->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;
|
|
}
|
|
|
|
#ifdef NETIF_F_TSO
|
|
if((adapter->hw.mac_type >= e1000_82544) &&
|
|
(adapter->hw.mac_type != e1000_82547))
|
|
netdev->features |= NETIF_F_TSO;
|
|
#endif
|
|
if(pci_using_dac)
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
|
|
/* hard_start_xmit is safe against parallel locking */
|
|
netdev->features |= NETIF_F_LLTX;
|
|
|
|
/* before reading the EEPROM, reset the controller to
|
|
* put the device in a known good starting state */
|
|
|
|
e1000_reset_hw(&adapter->hw);
|
|
|
|
/* make sure the EEPROM is good */
|
|
|
|
if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
|
|
DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
|
|
err = -EIO;
|
|
goto err_eeprom;
|
|
}
|
|
|
|
/* copy the MAC address out of the EEPROM */
|
|
|
|
if (e1000_read_mac_addr(&adapter->hw))
|
|
DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
|
|
memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
|
|
|
|
if(!is_valid_ether_addr(netdev->dev_addr)) {
|
|
DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
|
|
err = -EIO;
|
|
goto err_eeprom;
|
|
}
|
|
|
|
e1000_read_part_num(&adapter->hw, &(adapter->part_num));
|
|
|
|
e1000_get_bus_info(&adapter->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_WORK(&adapter->watchdog_task,
|
|
(void (*)(void *))e1000_watchdog_task, 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->tx_timeout_task,
|
|
(void (*)(void *))e1000_tx_timeout_task, netdev);
|
|
|
|
/* we're going to reset, so assume we have no link for now */
|
|
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
|
|
e1000_check_options(adapter);
|
|
|
|
/* Initial Wake on LAN setting
|
|
* If APM wake is enabled in the EEPROM,
|
|
* enable the ACPI Magic Packet filter
|
|
*/
|
|
|
|
switch(adapter->hw.mac_type) {
|
|
case e1000_82542_rev2_0:
|
|
case e1000_82542_rev2_1:
|
|
case e1000_82543:
|
|
break;
|
|
case e1000_82544:
|
|
e1000_read_eeprom(&adapter->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((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
|
|
&& (adapter->hw.media_type == e1000_media_type_copper)) {
|
|
e1000_read_eeprom(&adapter->hw,
|
|
EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
|
|
break;
|
|
}
|
|
/* Fall Through */
|
|
default:
|
|
e1000_read_eeprom(&adapter->hw,
|
|
EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
|
|
break;
|
|
}
|
|
if(eeprom_data & eeprom_apme_mask)
|
|
adapter->wol |= E1000_WUFC_MAG;
|
|
|
|
/* reset the hardware with the new settings */
|
|
e1000_reset(adapter);
|
|
|
|
strcpy(netdev->name, "eth%d");
|
|
if((err = register_netdev(netdev)))
|
|
goto err_register;
|
|
|
|
DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
|
|
|
|
cards_found++;
|
|
return 0;
|
|
|
|
err_register:
|
|
err_sw_init:
|
|
err_eeprom:
|
|
iounmap(adapter->hw.hw_addr);
|
|
err_ioremap:
|
|
free_netdev(netdev);
|
|
err_alloc_etherdev:
|
|
pci_release_regions(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;
|
|
uint32_t manc;
|
|
|
|
flush_scheduled_work();
|
|
|
|
if(adapter->hw.mac_type >= e1000_82540 &&
|
|
adapter->hw.media_type == e1000_media_type_copper) {
|
|
manc = E1000_READ_REG(&adapter->hw, MANC);
|
|
if(manc & E1000_MANC_SMBUS_EN) {
|
|
manc |= E1000_MANC_ARP_EN;
|
|
E1000_WRITE_REG(&adapter->hw, MANC, manc);
|
|
}
|
|
}
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
e1000_phy_hw_reset(&adapter->hw);
|
|
|
|
iounmap(adapter->hw.hw_addr);
|
|
pci_release_regions(pdev);
|
|
|
|
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;
|
|
|
|
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
|
|
|
|
pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
|
|
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_2048;
|
|
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;
|
|
}
|
|
|
|
/* initialize eeprom parameters */
|
|
|
|
e1000_init_eeprom_params(hw);
|
|
|
|
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;
|
|
}
|
|
|
|
atomic_set(&adapter->irq_sem, 1);
|
|
spin_lock_init(&adapter->stats_lock);
|
|
spin_lock_init(&adapter->tx_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
int err;
|
|
|
|
/* allocate transmit descriptors */
|
|
|
|
if((err = e1000_setup_tx_resources(adapter)))
|
|
goto err_setup_tx;
|
|
|
|
/* allocate receive descriptors */
|
|
|
|
if((err = e1000_setup_rx_resources(adapter)))
|
|
goto err_setup_rx;
|
|
|
|
if((err = e1000_up(adapter)))
|
|
goto err_up;
|
|
|
|
return E1000_SUCCESS;
|
|
|
|
err_up:
|
|
e1000_free_rx_resources(adapter);
|
|
err_setup_rx:
|
|
e1000_free_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;
|
|
|
|
e1000_down(adapter);
|
|
|
|
e1000_free_tx_resources(adapter);
|
|
e1000_free_rx_resources(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
|
|
* @adapter: address of board private structure
|
|
* @begin: address of beginning of memory
|
|
* @end: address of end of memory
|
|
**/
|
|
static inline boolean_t
|
|
e1000_check_64k_bound(struct e1000_adapter *adapter,
|
|
void *start, unsigned long len)
|
|
{
|
|
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 a 64k boundary due to errata 23 */
|
|
if (adapter->hw.mac_type == e1000_82545 ||
|
|
adapter->hw.mac_type == e1000_82546 ) {
|
|
|
|
/* check buffer doesn't cross 64kB */
|
|
return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_tx_resources - allocate Tx resources (Descriptors)
|
|
* @adapter: board private structure
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
|
|
int
|
|
e1000_setup_tx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_desc_ring *txdr = &adapter->tx_ring;
|
|
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);
|
|
E1000_ROUNDUP(txdr->size, 4096);
|
|
|
|
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
|
|
if(!txdr->desc) {
|
|
setup_tx_desc_die:
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to Allocate Memory for the Transmit descriptor ring\n");
|
|
vfree(txdr->buffer_info);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* fix for errata 23, cant 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, critial 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, move on with the new one since its okay */
|
|
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_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)
|
|
{
|
|
uint64_t tdba = adapter->tx_ring.dma;
|
|
uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc);
|
|
uint32_t tctl, tipg;
|
|
|
|
E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL));
|
|
E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32));
|
|
|
|
E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen);
|
|
|
|
/* Setup the HW Tx Head and Tail descriptor pointers */
|
|
|
|
E1000_WRITE_REG(&adapter->hw, TDH, 0);
|
|
E1000_WRITE_REG(&adapter->hw, TDT, 0);
|
|
|
|
/* Set the default values for the Tx Inter Packet Gap timer */
|
|
|
|
switch (adapter->hw.mac_type) {
|
|
case e1000_82542_rev2_0:
|
|
case e1000_82542_rev2_1:
|
|
tipg = DEFAULT_82542_TIPG_IPGT;
|
|
tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
|
|
tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
|
|
break;
|
|
default:
|
|
if(adapter->hw.media_type == e1000_media_type_fiber ||
|
|
adapter->hw.media_type == e1000_media_type_internal_serdes)
|
|
tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
|
|
else
|
|
tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
|
|
tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
|
|
tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
|
|
}
|
|
E1000_WRITE_REG(&adapter->hw, TIPG, tipg);
|
|
|
|
/* Set the Tx Interrupt Delay register */
|
|
|
|
E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay);
|
|
if(adapter->hw.mac_type >= e1000_82540)
|
|
E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay);
|
|
|
|
/* Program the Transmit Control Register */
|
|
|
|
tctl = E1000_READ_REG(&adapter->hw, TCTL);
|
|
|
|
tctl &= ~E1000_TCTL_CT;
|
|
tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
|
|
(E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
|
|
|
|
E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
|
|
|
|
e1000_config_collision_dist(&adapter->hw);
|
|
|
|
/* Setup Transmit Descriptor Settings for eop descriptor */
|
|
adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
|
|
E1000_TXD_CMD_IFCS;
|
|
|
|
if(adapter->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(adapter->hw.mac_type == e1000_82544 &&
|
|
adapter->hw.bus_type == e1000_bus_type_pcix)
|
|
adapter->pcix_82544 = 1;
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_rx_resources - allocate Rx resources (Descriptors)
|
|
* @adapter: board private structure
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
|
|
int
|
|
e1000_setup_rx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_desc_ring *rxdr = &adapter->rx_ring;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
int size;
|
|
|
|
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 Recieve descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(rxdr->buffer_info, 0, size);
|
|
|
|
/* Round up to nearest 4K */
|
|
|
|
rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
|
|
E1000_ROUNDUP(rxdr->size, 4096);
|
|
|
|
rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
|
|
|
|
if(!rxdr->desc) {
|
|
setup_rx_desc_die:
|
|
DPRINTK(PROBE, ERR,
|
|
"Unble to Allocate Memory for the Recieve descriptor ring\n");
|
|
vfree(rxdr->buffer_info);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* fix for errata 23, cant 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, critial failure */
|
|
if(!rxdr->desc) {
|
|
pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
|
|
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");
|
|
vfree(rxdr->buffer_info);
|
|
return -ENOMEM;
|
|
} else {
|
|
/* free old, move on with the new one since its okay */
|
|
pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
|
|
}
|
|
}
|
|
memset(rxdr->desc, 0, rxdr->size);
|
|
|
|
rxdr->next_to_clean = 0;
|
|
rxdr->next_to_use = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_rctl - configure the receive control register
|
|
* @adapter: Board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_setup_rctl(struct e1000_adapter *adapter)
|
|
{
|
|
uint32_t rctl;
|
|
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
|
|
rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
|
|
|
|
rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
|
|
E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
|
|
(adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
|
|
|
|
if(adapter->hw.tbi_compatibility_on == 1)
|
|
rctl |= E1000_RCTL_SBP;
|
|
else
|
|
rctl &= ~E1000_RCTL_SBP;
|
|
|
|
/* Setup buffer sizes */
|
|
rctl &= ~(E1000_RCTL_SZ_4096);
|
|
rctl |= (E1000_RCTL_BSEX | E1000_RCTL_LPE);
|
|
switch (adapter->rx_buffer_len) {
|
|
case E1000_RXBUFFER_2048:
|
|
default:
|
|
rctl |= E1000_RCTL_SZ_2048;
|
|
rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
|
|
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;
|
|
}
|
|
|
|
E1000_WRITE_REG(&adapter->hw, 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)
|
|
{
|
|
uint64_t rdba = adapter->rx_ring.dma;
|
|
uint32_t rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc);
|
|
uint32_t rctl;
|
|
uint32_t rxcsum;
|
|
|
|
/* disable receives while setting up the descriptors */
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN);
|
|
|
|
/* set the Receive Delay Timer Register */
|
|
E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay);
|
|
|
|
if(adapter->hw.mac_type >= e1000_82540) {
|
|
E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay);
|
|
if(adapter->itr > 1)
|
|
E1000_WRITE_REG(&adapter->hw, ITR,
|
|
1000000000 / (adapter->itr * 256));
|
|
}
|
|
|
|
/* Setup the Base and Length of the Rx Descriptor Ring */
|
|
E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL));
|
|
E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32));
|
|
|
|
E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen);
|
|
|
|
/* Setup the HW Rx Head and Tail Descriptor Pointers */
|
|
E1000_WRITE_REG(&adapter->hw, RDH, 0);
|
|
E1000_WRITE_REG(&adapter->hw, RDT, 0);
|
|
|
|
/* Enable 82543 Receive Checksum Offload for TCP and UDP */
|
|
if((adapter->hw.mac_type >= e1000_82543) &&
|
|
(adapter->rx_csum == TRUE)) {
|
|
rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM);
|
|
rxcsum |= E1000_RXCSUM_TUOFL;
|
|
E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum);
|
|
}
|
|
|
|
/* Enable Receives */
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
}
|
|
|
|
/**
|
|
* e1000_free_tx_resources - Free Tx Resources
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
|
|
void
|
|
e1000_free_tx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
e1000_clean_tx_ring(adapter);
|
|
|
|
vfree(adapter->tx_ring.buffer_info);
|
|
adapter->tx_ring.buffer_info = NULL;
|
|
|
|
pci_free_consistent(pdev, adapter->tx_ring.size,
|
|
adapter->tx_ring.desc, adapter->tx_ring.dma);
|
|
|
|
adapter->tx_ring.desc = NULL;
|
|
}
|
|
|
|
static inline void
|
|
e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
|
|
struct e1000_buffer *buffer_info)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
if(buffer_info->dma) {
|
|
pci_unmap_page(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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_tx_ring - Free Tx Buffers
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_clean_tx_ring(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned long size;
|
|
unsigned int i;
|
|
|
|
/* Free all the Tx ring sk_buffs */
|
|
|
|
if (likely(adapter->previous_buffer_info.skb != NULL)) {
|
|
e1000_unmap_and_free_tx_resource(adapter,
|
|
&adapter->previous_buffer_info);
|
|
}
|
|
|
|
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;
|
|
|
|
E1000_WRITE_REG(&adapter->hw, TDH, 0);
|
|
E1000_WRITE_REG(&adapter->hw, TDT, 0);
|
|
}
|
|
|
|
/**
|
|
* e1000_free_rx_resources - Free Rx Resources
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
|
|
void
|
|
e1000_free_rx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
e1000_clean_rx_ring(adapter);
|
|
|
|
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_clean_rx_ring - Free Rx Buffers
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_clean_rx_ring(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
|
|
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->skb) {
|
|
|
|
pci_unmap_single(pdev,
|
|
buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
dev_kfree_skb(buffer_info->skb);
|
|
buffer_info->skb = 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;
|
|
|
|
E1000_WRITE_REG(&adapter->hw, RDH, 0);
|
|
E1000_WRITE_REG(&adapter->hw, RDT, 0);
|
|
}
|
|
|
|
/* 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 net_device *netdev = adapter->netdev;
|
|
uint32_t rctl;
|
|
|
|
e1000_pci_clear_mwi(&adapter->hw);
|
|
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl |= E1000_RCTL_RST;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
E1000_WRITE_FLUSH(&adapter->hw);
|
|
mdelay(5);
|
|
|
|
if(netif_running(netdev))
|
|
e1000_clean_rx_ring(adapter);
|
|
}
|
|
|
|
static void
|
|
e1000_leave_82542_rst(struct e1000_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
uint32_t rctl;
|
|
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl &= ~E1000_RCTL_RST;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
E1000_WRITE_FLUSH(&adapter->hw);
|
|
mdelay(5);
|
|
|
|
if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
|
|
e1000_pci_set_mwi(&adapter->hw);
|
|
|
|
if(netif_running(netdev)) {
|
|
e1000_configure_rx(adapter);
|
|
e1000_alloc_rx_buffers(adapter);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
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(adapter->hw.mac_type == e1000_82542_rev2_0)
|
|
e1000_enter_82542_rst(adapter);
|
|
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
|
|
|
|
e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
|
|
|
|
if(adapter->hw.mac_type == e1000_82542_rev2_0)
|
|
e1000_leave_82542_rst(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_set_multi - Multicast and Promiscuous mode set
|
|
* @netdev: network interface device structure
|
|
*
|
|
* The set_multi entry point is called whenever the multicast address
|
|
* list or the network interface flags are updated. This routine is
|
|
* responsible for configuring the hardware for proper multicast,
|
|
* promiscuous mode, and all-multi behavior.
|
|
**/
|
|
|
|
static void
|
|
e1000_set_multi(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct dev_mc_list *mc_ptr;
|
|
uint32_t rctl;
|
|
uint32_t hash_value;
|
|
int i;
|
|
unsigned long flags;
|
|
|
|
/* Check for Promiscuous and All Multicast modes */
|
|
|
|
spin_lock_irqsave(&adapter->tx_lock, flags);
|
|
|
|
rctl = E1000_READ_REG(hw, RCTL);
|
|
|
|
if(netdev->flags & IFF_PROMISC) {
|
|
rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
|
|
} else if(netdev->flags & IFF_ALLMULTI) {
|
|
rctl |= E1000_RCTL_MPE;
|
|
rctl &= ~E1000_RCTL_UPE;
|
|
} else {
|
|
rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
|
|
}
|
|
|
|
E1000_WRITE_REG(hw, 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 multicast address into the exact filters 1-14
|
|
* RAR 0 is used for the station MAC adddress
|
|
* if there are not 14 addresses, go ahead and clear the filters
|
|
*/
|
|
mc_ptr = netdev->mc_list;
|
|
|
|
for(i = 1; i < E1000_RAR_ENTRIES; i++) {
|
|
if(mc_ptr) {
|
|
e1000_rar_set(hw, mc_ptr->dmi_addr, i);
|
|
mc_ptr = mc_ptr->next;
|
|
} else {
|
|
E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
|
|
E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
|
|
}
|
|
}
|
|
|
|
/* clear the old settings from the multicast hash table */
|
|
|
|
for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++)
|
|
E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
|
|
|
|
/* load any remaining addresses into the hash table */
|
|
|
|
for(; mc_ptr; mc_ptr = mc_ptr->next) {
|
|
hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
|
|
e1000_mta_set(hw, hash_value);
|
|
}
|
|
|
|
if(hw->mac_type == e1000_82542_rev2_0)
|
|
e1000_leave_82542_rst(adapter);
|
|
|
|
spin_unlock_irqrestore(&adapter->tx_lock, flags);
|
|
}
|
|
|
|
/* 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;
|
|
e1000_phy_get_info(&adapter->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 net_device *netdev = adapter->netdev;
|
|
uint32_t tctl;
|
|
|
|
if(atomic_read(&adapter->tx_fifo_stall)) {
|
|
if((E1000_READ_REG(&adapter->hw, TDT) ==
|
|
E1000_READ_REG(&adapter->hw, TDH)) &&
|
|
(E1000_READ_REG(&adapter->hw, TDFT) ==
|
|
E1000_READ_REG(&adapter->hw, TDFH)) &&
|
|
(E1000_READ_REG(&adapter->hw, TDFTS) ==
|
|
E1000_READ_REG(&adapter->hw, TDFHS))) {
|
|
tctl = E1000_READ_REG(&adapter->hw, TCTL);
|
|
E1000_WRITE_REG(&adapter->hw, TCTL,
|
|
tctl & ~E1000_TCTL_EN);
|
|
E1000_WRITE_REG(&adapter->hw, TDFT,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TDFH,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TDFTS,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TDFHS,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
|
|
E1000_WRITE_FLUSH(&adapter->hw);
|
|
|
|
adapter->tx_fifo_head = 0;
|
|
atomic_set(&adapter->tx_fifo_stall, 0);
|
|
netif_wake_queue(netdev);
|
|
} else {
|
|
mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
/* Do the rest outside of interrupt context */
|
|
schedule_work(&adapter->watchdog_task);
|
|
}
|
|
|
|
static void
|
|
e1000_watchdog_task(struct e1000_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_desc_ring *txdr = &adapter->tx_ring;
|
|
uint32_t link;
|
|
|
|
e1000_check_for_link(&adapter->hw);
|
|
|
|
if((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
|
|
!(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
|
|
link = !adapter->hw.serdes_link_down;
|
|
else
|
|
link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
|
|
|
|
if(link) {
|
|
if(!netif_carrier_ok(netdev)) {
|
|
e1000_get_speed_and_duplex(&adapter->hw,
|
|
&adapter->link_speed,
|
|
&adapter->link_duplex);
|
|
|
|
DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
|
|
adapter->link_speed,
|
|
adapter->link_duplex == FULL_DUPLEX ?
|
|
"Full Duplex" : "Half Duplex");
|
|
|
|
netif_carrier_on(netdev);
|
|
netif_wake_queue(netdev);
|
|
mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
|
|
adapter->smartspeed = 0;
|
|
}
|
|
} else {
|
|
if(netif_carrier_ok(netdev)) {
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
DPRINTK(LINK, INFO, "NIC Link is Down\n");
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
|
|
}
|
|
|
|
e1000_smartspeed(adapter);
|
|
}
|
|
|
|
e1000_update_stats(adapter);
|
|
|
|
adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
|
|
adapter->tpt_old = adapter->stats.tpt;
|
|
adapter->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(&adapter->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). */
|
|
schedule_work(&adapter->tx_timeout_task);
|
|
}
|
|
}
|
|
|
|
/* Dynamic mode for Interrupt Throttle Rate (ITR) */
|
|
if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) {
|
|
/* Symmetric Tx/Rx gets a reduced ITR=2000; Total
|
|
* asymmetrical Tx or Rx gets ITR=8000; everyone
|
|
* else is between 2000-8000. */
|
|
uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000;
|
|
uint32_t dif = (adapter->gotcl > adapter->gorcl ?
|
|
adapter->gotcl - adapter->gorcl :
|
|
adapter->gorcl - adapter->gotcl) / 10000;
|
|
uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
|
|
E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256));
|
|
}
|
|
|
|
/* Cause software interrupt to ensure rx ring is cleaned */
|
|
E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
|
|
|
|
/* Force detection of hung controller every watchdog period*/
|
|
adapter->detect_tx_hung = TRUE;
|
|
|
|
/* Reset the timer */
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
|
|
}
|
|
|
|
#define E1000_TX_FLAGS_CSUM 0x00000001
|
|
#define E1000_TX_FLAGS_VLAN 0x00000002
|
|
#define E1000_TX_FLAGS_TSO 0x00000004
|
|
#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
|
|
#define E1000_TX_FLAGS_VLAN_SHIFT 16
|
|
|
|
static inline int
|
|
e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
#ifdef NETIF_F_TSO
|
|
struct e1000_context_desc *context_desc;
|
|
unsigned int i;
|
|
uint32_t cmd_length = 0;
|
|
uint16_t ipcse, tucse, mss;
|
|
uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
|
|
int err;
|
|
|
|
if(skb_shinfo(skb)->tso_size) {
|
|
if (skb_header_cloned(skb)) {
|
|
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
|
|
mss = skb_shinfo(skb)->tso_size;
|
|
skb->nh.iph->tot_len = 0;
|
|
skb->nh.iph->check = 0;
|
|
skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
|
|
skb->nh.iph->daddr,
|
|
0,
|
|
IPPROTO_TCP,
|
|
0);
|
|
ipcss = skb->nh.raw - skb->data;
|
|
ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
|
|
ipcse = skb->h.raw - skb->data - 1;
|
|
tucss = skb->h.raw - skb->data;
|
|
tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
|
|
tucse = 0;
|
|
|
|
cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
|
|
E1000_TXD_CMD_IP | E1000_TXD_CMD_TCP |
|
|
(skb->len - (hdr_len)));
|
|
|
|
i = adapter->tx_ring.next_to_use;
|
|
context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, 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);
|
|
|
|
if(++i == adapter->tx_ring.count) i = 0;
|
|
adapter->tx_ring.next_to_use = i;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline boolean_t
|
|
e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
struct e1000_context_desc *context_desc;
|
|
unsigned int i;
|
|
uint8_t css;
|
|
|
|
if(likely(skb->ip_summed == CHECKSUM_HW)) {
|
|
css = skb->h.raw - skb->data;
|
|
|
|
i = adapter->tx_ring.next_to_use;
|
|
context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
|
|
|
|
context_desc->upper_setup.tcp_fields.tucss = css;
|
|
context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
|
|
context_desc->upper_setup.tcp_fields.tucse = 0;
|
|
context_desc->tcp_seg_setup.data = 0;
|
|
context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
|
|
|
|
if(unlikely(++i == adapter->tx_ring.count)) i = 0;
|
|
adapter->tx_ring.next_to_use = i;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
#define E1000_MAX_TXD_PWR 12
|
|
#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
|
|
|
|
static inline int
|
|
e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb,
|
|
unsigned int first, unsigned int max_per_txd,
|
|
unsigned int nr_frags, unsigned int mss)
|
|
{
|
|
struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int len = skb->len;
|
|
unsigned int offset = 0, size, count = 0, i;
|
|
unsigned int f;
|
|
len -= skb->data_len;
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
while(len) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
size = min(len, max_per_txd);
|
|
#ifdef NETIF_F_TSO
|
|
/* 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;
|
|
#endif
|
|
/* 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;
|
|
buffer_info->dma =
|
|
pci_map_single(adapter->pdev,
|
|
skb->data + offset,
|
|
size,
|
|
PCI_DMA_TODEVICE);
|
|
buffer_info->time_stamp = jiffies;
|
|
|
|
len -= size;
|
|
offset += size;
|
|
count++;
|
|
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) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
size = min(len, max_per_txd);
|
|
#ifdef NETIF_F_TSO
|
|
/* 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;
|
|
#endif
|
|
/* Workaround for potential 82544 hang in PCI-X.
|
|
* Avoid terminating buffers within evenly-aligned
|
|
* dwords. */
|
|
if(unlikely(adapter->pcix_82544 &&
|
|
!((unsigned long)(frag->page+offset+size-1) & 4) &&
|
|
size > 4))
|
|
size -= 4;
|
|
|
|
buffer_info->length = size;
|
|
buffer_info->dma =
|
|
pci_map_page(adapter->pdev,
|
|
frag->page,
|
|
offset,
|
|
size,
|
|
PCI_DMA_TODEVICE);
|
|
buffer_info->time_stamp = jiffies;
|
|
|
|
len -= size;
|
|
offset += size;
|
|
count++;
|
|
if(unlikely(++i == tx_ring->count)) i = 0;
|
|
}
|
|
}
|
|
|
|
i = (i == 0) ? tx_ring->count - 1 : i - 1;
|
|
tx_ring->buffer_info[i].skb = skb;
|
|
tx_ring->buffer_info[first].next_to_watch = i;
|
|
|
|
return count;
|
|
}
|
|
|
|
static inline void
|
|
e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags)
|
|
{
|
|
struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
|
|
struct e1000_tx_desc *tx_desc = NULL;
|
|
struct e1000_buffer *buffer_info;
|
|
uint32_t 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_IXSM | E1000_TXD_POPTS_TXSM) << 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;
|
|
E1000_WRITE_REG(&adapter->hw, TDT, i);
|
|
}
|
|
|
|
/**
|
|
* 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 inline int
|
|
e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
|
|
uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
|
|
|
|
E1000_ROUNDUP(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;
|
|
}
|
|
|
|
#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
|
|
static int
|
|
e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
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;
|
|
unsigned long flags;
|
|
unsigned int nr_frags = 0;
|
|
unsigned int mss = 0;
|
|
int count = 0;
|
|
int tso;
|
|
unsigned int f;
|
|
len -= skb->data_len;
|
|
|
|
if(unlikely(skb->len <= 0)) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
#ifdef NETIF_F_TSO
|
|
mss = skb_shinfo(skb)->tso_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) {
|
|
max_per_txd = min(mss << 2, max_per_txd);
|
|
max_txd_pwr = fls(max_per_txd) - 1;
|
|
}
|
|
|
|
if((mss) || (skb->ip_summed == CHECKSUM_HW))
|
|
count++;
|
|
count++; /* for sentinel desc */
|
|
#else
|
|
if(skb->ip_summed == CHECKSUM_HW)
|
|
count++;
|
|
#endif
|
|
count += TXD_USE_COUNT(len, max_txd_pwr);
|
|
|
|
if(adapter->pcix_82544)
|
|
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;
|
|
|
|
local_irq_save(flags);
|
|
if (!spin_trylock(&adapter->tx_lock)) {
|
|
/* Collision - tell upper layer to requeue */
|
|
local_irq_restore(flags);
|
|
return NETDEV_TX_LOCKED;
|
|
}
|
|
|
|
/* need: count + 2 desc gap to keep tail from touching
|
|
* head, otherwise try next time */
|
|
if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2)) {
|
|
netif_stop_queue(netdev);
|
|
spin_unlock_irqrestore(&adapter->tx_lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
if(unlikely(adapter->hw.mac_type == e1000_82547)) {
|
|
if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
|
|
netif_stop_queue(netdev);
|
|
mod_timer(&adapter->tx_fifo_stall_timer, jiffies);
|
|
spin_unlock_irqrestore(&adapter->tx_lock, flags);
|
|
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 = adapter->tx_ring.next_to_use;
|
|
|
|
tso = e1000_tso(adapter, skb);
|
|
if (tso < 0) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (likely(tso))
|
|
tx_flags |= E1000_TX_FLAGS_TSO;
|
|
else if(likely(e1000_tx_csum(adapter, skb)))
|
|
tx_flags |= E1000_TX_FLAGS_CSUM;
|
|
|
|
e1000_tx_queue(adapter,
|
|
e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss),
|
|
tx_flags);
|
|
|
|
netdev->trans_start = jiffies;
|
|
|
|
/* Make sure there is space in the ring for the next send. */
|
|
if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < MAX_SKB_FRAGS + 2))
|
|
netif_stop_queue(netdev);
|
|
|
|
spin_unlock_irqrestore(&adapter->tx_lock, flags);
|
|
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;
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
schedule_work(&adapter->tx_timeout_task);
|
|
}
|
|
|
|
static void
|
|
e1000_tx_timeout_task(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
|
|
e1000_down(adapter);
|
|
e1000_up(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)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
|
|
e1000_update_stats(adapter);
|
|
return &adapter->net_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;
|
|
int old_mtu = adapter->rx_buffer_len;
|
|
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;
|
|
}
|
|
|
|
if(max_frame <= MAXIMUM_ETHERNET_FRAME_SIZE) {
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_2048;
|
|
|
|
} else if(adapter->hw.mac_type < e1000_82543) {
|
|
DPRINTK(PROBE, ERR, "Jumbo Frames not supported on 82542\n");
|
|
return -EINVAL;
|
|
|
|
} else if(max_frame <= E1000_RXBUFFER_4096) {
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_4096;
|
|
|
|
} else if(max_frame <= E1000_RXBUFFER_8192) {
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_8192;
|
|
|
|
} else {
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_16384;
|
|
}
|
|
|
|
if(old_mtu != adapter->rx_buffer_len && netif_running(netdev)) {
|
|
e1000_down(adapter);
|
|
e1000_up(adapter);
|
|
}
|
|
|
|
netdev->mtu = new_mtu;
|
|
adapter->hw.max_frame_size = max_frame;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_update_stats - Update the board statistics counters
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
void
|
|
e1000_update_stats(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
unsigned long flags;
|
|
uint16_t phy_tmp;
|
|
|
|
#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
|
|
|
|
spin_lock_irqsave(&adapter->stats_lock, flags);
|
|
|
|
/* these counters are modified from e1000_adjust_tbi_stats,
|
|
* called from the interrupt context, so they must only
|
|
* be written while holding adapter->stats_lock
|
|
*/
|
|
|
|
adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
|
|
adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
|
|
adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
|
|
adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
|
|
adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
|
|
adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
|
|
adapter->stats.roc += E1000_READ_REG(hw, ROC);
|
|
adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
|
|
adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
|
|
adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
|
|
adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
|
|
adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
|
|
adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
|
|
|
|
adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
|
|
adapter->stats.mpc += E1000_READ_REG(hw, MPC);
|
|
adapter->stats.scc += E1000_READ_REG(hw, SCC);
|
|
adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
|
|
adapter->stats.mcc += E1000_READ_REG(hw, MCC);
|
|
adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
|
|
adapter->stats.dc += E1000_READ_REG(hw, DC);
|
|
adapter->stats.sec += E1000_READ_REG(hw, SEC);
|
|
adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
|
|
adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
|
|
adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
|
|
adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
|
|
adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
|
|
adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
|
|
adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
|
|
adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
|
|
adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
|
|
adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
|
|
adapter->stats.ruc += E1000_READ_REG(hw, RUC);
|
|
adapter->stats.rfc += E1000_READ_REG(hw, RFC);
|
|
adapter->stats.rjc += E1000_READ_REG(hw, RJC);
|
|
adapter->stats.torl += E1000_READ_REG(hw, TORL);
|
|
adapter->stats.torh += E1000_READ_REG(hw, TORH);
|
|
adapter->stats.totl += E1000_READ_REG(hw, TOTL);
|
|
adapter->stats.toth += E1000_READ_REG(hw, TOTH);
|
|
adapter->stats.tpr += E1000_READ_REG(hw, TPR);
|
|
adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
|
|
adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
|
|
adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
|
|
adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
|
|
adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
|
|
adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
|
|
adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
|
|
adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
|
|
|
|
/* used for adaptive IFS */
|
|
|
|
hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
|
|
adapter->stats.tpt += hw->tx_packet_delta;
|
|
hw->collision_delta = E1000_READ_REG(hw, COLC);
|
|
adapter->stats.colc += hw->collision_delta;
|
|
|
|
if(hw->mac_type >= e1000_82543) {
|
|
adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
|
|
adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
|
|
adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
|
|
adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
|
|
adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
|
|
adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
|
|
}
|
|
|
|
/* Fill out the OS statistics structure */
|
|
|
|
adapter->net_stats.rx_packets = adapter->stats.gprc;
|
|
adapter->net_stats.tx_packets = adapter->stats.gptc;
|
|
adapter->net_stats.rx_bytes = adapter->stats.gorcl;
|
|
adapter->net_stats.tx_bytes = adapter->stats.gotcl;
|
|
adapter->net_stats.multicast = adapter->stats.mprc;
|
|
adapter->net_stats.collisions = adapter->stats.colc;
|
|
|
|
/* Rx Errors */
|
|
|
|
adapter->net_stats.rx_errors = adapter->stats.rxerrc +
|
|
adapter->stats.crcerrs + adapter->stats.algnerrc +
|
|
adapter->stats.rlec + adapter->stats.rnbc +
|
|
adapter->stats.mpc + adapter->stats.cexterr;
|
|
adapter->net_stats.rx_dropped = adapter->stats.rnbc;
|
|
adapter->net_stats.rx_length_errors = adapter->stats.rlec;
|
|
adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
|
|
adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
|
|
adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
|
|
adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
|
|
|
|
/* Tx Errors */
|
|
|
|
adapter->net_stats.tx_errors = adapter->stats.ecol +
|
|
adapter->stats.latecol;
|
|
adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
|
|
adapter->net_stats.tx_window_errors = adapter->stats.latecol;
|
|
adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&adapter->stats_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* e1000_intr - Interrupt Handler
|
|
* @irq: interrupt number
|
|
* @data: pointer to a network interface device structure
|
|
* @pt_regs: CPU registers structure
|
|
**/
|
|
|
|
static irqreturn_t
|
|
e1000_intr(int irq, void *data, struct pt_regs *regs)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
uint32_t icr = E1000_READ_REG(hw, ICR);
|
|
#ifndef CONFIG_E1000_NAPI
|
|
unsigned int i;
|
|
#endif
|
|
|
|
if(unlikely(!icr))
|
|
return IRQ_NONE; /* Not our interrupt */
|
|
|
|
if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
|
|
hw->get_link_status = 1;
|
|
mod_timer(&adapter->watchdog_timer, jiffies);
|
|
}
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if(likely(netif_rx_schedule_prep(netdev))) {
|
|
|
|
/* Disable interrupts and register for poll. The flush
|
|
of the posted write is intentionally left out.
|
|
*/
|
|
|
|
atomic_inc(&adapter->irq_sem);
|
|
E1000_WRITE_REG(hw, IMC, ~0);
|
|
__netif_rx_schedule(netdev);
|
|
}
|
|
#else
|
|
/* Writing IMC and IMS is needed for 82547.
|
|
Due to Hub Link bus being occupied, an interrupt
|
|
de-assertion message is not able to be sent.
|
|
When an interrupt assertion message is generated later,
|
|
two messages are re-ordered and sent out.
|
|
That causes APIC to think 82547 is in de-assertion
|
|
state, while 82547 is in assertion state, resulting
|
|
in dead lock. Writing IMC forces 82547 into
|
|
de-assertion state.
|
|
*/
|
|
if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2){
|
|
atomic_inc(&adapter->irq_sem);
|
|
E1000_WRITE_REG(&adapter->hw, IMC, ~0);
|
|
}
|
|
|
|
for(i = 0; i < E1000_MAX_INTR; i++)
|
|
if(unlikely(!e1000_clean_rx_irq(adapter) &
|
|
!e1000_clean_tx_irq(adapter)))
|
|
break;
|
|
|
|
if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2)
|
|
e1000_irq_enable(adapter);
|
|
#endif
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
/**
|
|
* e1000_clean - NAPI Rx polling callback
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static int
|
|
e1000_clean(struct net_device *netdev, int *budget)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
int work_to_do = min(*budget, netdev->quota);
|
|
int tx_cleaned;
|
|
int work_done = 0;
|
|
|
|
tx_cleaned = e1000_clean_tx_irq(adapter);
|
|
e1000_clean_rx_irq(adapter, &work_done, work_to_do);
|
|
|
|
*budget -= work_done;
|
|
netdev->quota -= work_done;
|
|
|
|
/* if no Tx and not enough Rx work done, exit the polling mode */
|
|
if((!tx_cleaned && (work_done < work_to_do)) ||
|
|
!netif_running(netdev)) {
|
|
netif_rx_complete(netdev);
|
|
e1000_irq_enable(adapter);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
#endif
|
|
/**
|
|
* e1000_clean_tx_irq - Reclaim resources after transmit completes
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static boolean_t
|
|
e1000_clean_tx_irq(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_tx_desc *tx_desc, *eop_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int i, eop;
|
|
boolean_t cleaned = FALSE;
|
|
|
|
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)) {
|
|
/* pre-mature writeback of Tx descriptors */
|
|
/* clear (free buffers and unmap pci_mapping) */
|
|
/* previous_buffer_info */
|
|
if (likely(adapter->previous_buffer_info.skb != NULL)) {
|
|
e1000_unmap_and_free_tx_resource(adapter,
|
|
&adapter->previous_buffer_info);
|
|
}
|
|
|
|
for(cleaned = FALSE; !cleaned; ) {
|
|
tx_desc = E1000_TX_DESC(*tx_ring, i);
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
cleaned = (i == eop);
|
|
|
|
/* pre-mature writeback of Tx descriptors */
|
|
/* save the cleaning of the this for the */
|
|
/* next iteration */
|
|
if (cleaned) {
|
|
memcpy(&adapter->previous_buffer_info,
|
|
buffer_info,
|
|
sizeof(struct e1000_buffer));
|
|
memset(buffer_info,
|
|
0,
|
|
sizeof(struct e1000_buffer));
|
|
} else {
|
|
e1000_unmap_and_free_tx_resource(adapter,
|
|
buffer_info);
|
|
}
|
|
|
|
tx_desc->buffer_addr = 0;
|
|
tx_desc->lower.data = 0;
|
|
tx_desc->upper.data = 0;
|
|
|
|
cleaned = (i == eop);
|
|
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;
|
|
|
|
spin_lock(&adapter->tx_lock);
|
|
|
|
if(unlikely(cleaned && netif_queue_stopped(netdev) &&
|
|
netif_carrier_ok(netdev)))
|
|
netif_wake_queue(netdev);
|
|
|
|
spin_unlock(&adapter->tx_lock);
|
|
|
|
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[i].dma &&
|
|
time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) &&
|
|
!(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF))
|
|
netif_stop_queue(netdev);
|
|
}
|
|
|
|
return cleaned;
|
|
}
|
|
|
|
/**
|
|
* e1000_rx_checksum - Receive Checksum Offload for 82543
|
|
* @adapter: board private structure
|
|
* @rx_desc: receive descriptor
|
|
* @sk_buff: socket buffer with received data
|
|
**/
|
|
|
|
static inline void
|
|
e1000_rx_checksum(struct e1000_adapter *adapter,
|
|
struct e1000_rx_desc *rx_desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
/* 82543 or newer only */
|
|
if(unlikely((adapter->hw.mac_type < e1000_82543) ||
|
|
/* Ignore Checksum bit is set */
|
|
(rx_desc->status & E1000_RXD_STAT_IXSM) ||
|
|
/* TCP Checksum has not been calculated */
|
|
(!(rx_desc->status & E1000_RXD_STAT_TCPCS)))) {
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
return;
|
|
}
|
|
|
|
/* At this point we know the hardware did the TCP checksum */
|
|
/* now look at the TCP checksum error bit */
|
|
if(rx_desc->errors & E1000_RXD_ERR_TCPE) {
|
|
/* let the stack verify checksum errors */
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
adapter->hw_csum_err++;
|
|
} else {
|
|
/* TCP checksum is good */
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
adapter->hw_csum_good++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_rx_irq - Send received data up the network stack
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static boolean_t
|
|
#ifdef CONFIG_E1000_NAPI
|
|
e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done,
|
|
int work_to_do)
|
|
#else
|
|
e1000_clean_rx_irq(struct e1000_adapter *adapter)
|
|
#endif
|
|
{
|
|
struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
|
|
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 long flags;
|
|
uint32_t length;
|
|
uint8_t last_byte;
|
|
unsigned int i;
|
|
boolean_t cleaned = FALSE;
|
|
|
|
i = rx_ring->next_to_clean;
|
|
rx_desc = E1000_RX_DESC(*rx_ring, i);
|
|
|
|
while(rx_desc->status & E1000_RXD_STAT_DD) {
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if(*work_done >= work_to_do)
|
|
break;
|
|
(*work_done)++;
|
|
#endif
|
|
cleaned = TRUE;
|
|
|
|
pci_unmap_single(pdev,
|
|
buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
skb = buffer_info->skb;
|
|
length = le16_to_cpu(rx_desc->length);
|
|
|
|
if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) {
|
|
/* All receives must fit into a single buffer */
|
|
E1000_DBG("%s: Receive packet consumed multiple"
|
|
" buffers\n", netdev->name);
|
|
dev_kfree_skb_irq(skb);
|
|
goto next_desc;
|
|
}
|
|
|
|
if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
|
|
last_byte = *(skb->data + length - 1);
|
|
if(TBI_ACCEPT(&adapter->hw, rx_desc->status,
|
|
rx_desc->errors, length, last_byte)) {
|
|
spin_lock_irqsave(&adapter->stats_lock, flags);
|
|
e1000_tbi_adjust_stats(&adapter->hw,
|
|
&adapter->stats,
|
|
length, skb->data);
|
|
spin_unlock_irqrestore(&adapter->stats_lock,
|
|
flags);
|
|
length--;
|
|
} else {
|
|
dev_kfree_skb_irq(skb);
|
|
goto next_desc;
|
|
}
|
|
}
|
|
|
|
/* Good Receive */
|
|
skb_put(skb, length - ETHERNET_FCS_SIZE);
|
|
|
|
/* Receive Checksum Offload */
|
|
e1000_rx_checksum(adapter, rx_desc, skb);
|
|
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if(unlikely(adapter->vlgrp &&
|
|
(rx_desc->status & E1000_RXD_STAT_VP))) {
|
|
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
|
|
le16_to_cpu(rx_desc->special) &
|
|
E1000_RXD_SPC_VLAN_MASK);
|
|
} else {
|
|
netif_receive_skb(skb);
|
|
}
|
|
#else /* CONFIG_E1000_NAPI */
|
|
if(unlikely(adapter->vlgrp &&
|
|
(rx_desc->status & E1000_RXD_STAT_VP))) {
|
|
vlan_hwaccel_rx(skb, adapter->vlgrp,
|
|
le16_to_cpu(rx_desc->special) &
|
|
E1000_RXD_SPC_VLAN_MASK);
|
|
} else {
|
|
netif_rx(skb);
|
|
}
|
|
#endif /* CONFIG_E1000_NAPI */
|
|
netdev->last_rx = jiffies;
|
|
|
|
next_desc:
|
|
rx_desc->status = 0;
|
|
buffer_info->skb = NULL;
|
|
if(unlikely(++i == rx_ring->count)) i = 0;
|
|
|
|
rx_desc = E1000_RX_DESC(*rx_ring, i);
|
|
}
|
|
|
|
rx_ring->next_to_clean = i;
|
|
|
|
e1000_alloc_rx_buffers(adapter);
|
|
|
|
return cleaned;
|
|
}
|
|
|
|
/**
|
|
* e1000_alloc_rx_buffers - Replace used receive buffers
|
|
* @adapter: address of board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_alloc_rx_buffers(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
|
|
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, bufsz;
|
|
|
|
i = rx_ring->next_to_use;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
|
|
while(!buffer_info->skb) {
|
|
bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
|
|
|
|
skb = dev_alloc_skb(bufsz);
|
|
if(unlikely(!skb)) {
|
|
/* Better luck next round */
|
|
break;
|
|
}
|
|
|
|
/* fix for errata 23, cant 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 = dev_alloc_skb(bufsz);
|
|
if (!skb) {
|
|
dev_kfree_skb(oldskb);
|
|
break;
|
|
}
|
|
if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
|
|
/* give up */
|
|
dev_kfree_skb(skb);
|
|
dev_kfree_skb(oldskb);
|
|
break; /* while !buffer_info->skb */
|
|
} else {
|
|
/* move on with the new one */
|
|
dev_kfree_skb(oldskb);
|
|
}
|
|
}
|
|
|
|
/* Make buffer alignment 2 beyond a 16 byte boundary
|
|
* this will result in a 16 byte aligned IP header after
|
|
* the 14 byte MAC header is removed
|
|
*/
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
|
|
skb->dev = netdev;
|
|
|
|
buffer_info->skb = skb;
|
|
buffer_info->length = adapter->rx_buffer_len;
|
|
buffer_info->dma = pci_map_single(pdev,
|
|
skb->data,
|
|
adapter->rx_buffer_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
/* fix for errata 23, cant 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 %ld\n",
|
|
adapter->rx_buffer_len, (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);
|
|
|
|
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 & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) {
|
|
/* 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();
|
|
|
|
E1000_WRITE_REG(&adapter->hw, RDT, i);
|
|
}
|
|
|
|
if(unlikely(++i == rx_ring->count)) i = 0;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
}
|
|
|
|
rx_ring->next_to_use = i;
|
|
}
|
|
|
|
/**
|
|
* e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
|
|
* @adapter:
|
|
**/
|
|
|
|
static void
|
|
e1000_smartspeed(struct e1000_adapter *adapter)
|
|
{
|
|
uint16_t phy_status;
|
|
uint16_t phy_ctrl;
|
|
|
|
if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
|
|
!(adapter->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(&adapter->hw, PHY_1000T_STATUS, &phy_status);
|
|
if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
|
|
e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
|
|
if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
|
|
e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
|
|
if(phy_ctrl & CR_1000T_MS_ENABLE) {
|
|
phy_ctrl &= ~CR_1000T_MS_ENABLE;
|
|
e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
|
|
phy_ctrl);
|
|
adapter->smartspeed++;
|
|
if(!e1000_phy_setup_autoneg(&adapter->hw) &&
|
|
!e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
|
|
&phy_ctrl)) {
|
|
phy_ctrl |= (MII_CR_AUTO_NEG_EN |
|
|
MII_CR_RESTART_AUTO_NEG);
|
|
e1000_write_phy_reg(&adapter->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(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
|
|
phy_ctrl |= CR_1000T_MS_ENABLE;
|
|
e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
|
|
if(!e1000_phy_setup_autoneg(&adapter->hw) &&
|
|
!e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
|
|
phy_ctrl |= (MII_CR_AUTO_NEG_EN |
|
|
MII_CR_RESTART_AUTO_NEG);
|
|
e1000_write_phy_reg(&adapter->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;
|
|
struct mii_ioctl_data *data = if_mii(ifr);
|
|
int retval;
|
|
uint16_t mii_reg;
|
|
uint16_t spddplx;
|
|
|
|
if(adapter->hw.media_type != e1000_media_type_copper)
|
|
return -EOPNOTSUPP;
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
data->phy_id = adapter->hw.phy_addr;
|
|
break;
|
|
case SIOCGMIIREG:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
|
|
&data->val_out))
|
|
return -EIO;
|
|
break;
|
|
case SIOCSMIIREG:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
if (data->reg_num & ~(0x1F))
|
|
return -EFAULT;
|
|
mii_reg = data->val_in;
|
|
if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
|
|
mii_reg))
|
|
return -EIO;
|
|
if (adapter->hw.phy_type == e1000_phy_m88) {
|
|
switch (data->reg_num) {
|
|
case PHY_CTRL:
|
|
if(mii_reg & MII_CR_POWER_DOWN)
|
|
break;
|
|
if(mii_reg & MII_CR_AUTO_NEG_EN) {
|
|
adapter->hw.autoneg = 1;
|
|
adapter->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)
|
|
? FULL_DUPLEX :
|
|
HALF_DUPLEX;
|
|
retval = e1000_set_spd_dplx(adapter,
|
|
spddplx);
|
|
if(retval)
|
|
return retval;
|
|
}
|
|
if(netif_running(adapter->netdev)) {
|
|
e1000_down(adapter);
|
|
e1000_up(adapter);
|
|
} else
|
|
e1000_reset(adapter);
|
|
break;
|
|
case M88E1000_PHY_SPEC_CTRL:
|
|
case M88E1000_EXT_PHY_SPEC_CTRL:
|
|
if (e1000_phy_reset(&adapter->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_down(adapter);
|
|
e1000_up(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;
|
|
ret = pci_set_mwi(adapter->pdev);
|
|
}
|
|
|
|
void
|
|
e1000_pci_clear_mwi(struct e1000_hw *hw)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
|
|
pci_clear_mwi(adapter->pdev);
|
|
}
|
|
|
|
void
|
|
e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
|
|
pci_read_config_word(adapter->pdev, reg, value);
|
|
}
|
|
|
|
void
|
|
e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
|
|
pci_write_config_word(adapter->pdev, reg, *value);
|
|
}
|
|
|
|
uint32_t
|
|
e1000_io_read(struct e1000_hw *hw, unsigned long port)
|
|
{
|
|
return inl(port);
|
|
}
|
|
|
|
void
|
|
e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
|
|
{
|
|
outl(value, port);
|
|
}
|
|
|
|
static void
|
|
e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
uint32_t ctrl, rctl;
|
|
|
|
e1000_irq_disable(adapter);
|
|
adapter->vlgrp = grp;
|
|
|
|
if(grp) {
|
|
/* enable VLAN tag insert/strip */
|
|
ctrl = E1000_READ_REG(&adapter->hw, CTRL);
|
|
ctrl |= E1000_CTRL_VME;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
|
|
|
|
/* enable VLAN receive filtering */
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl |= E1000_RCTL_VFE;
|
|
rctl &= ~E1000_RCTL_CFIEN;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
} else {
|
|
/* disable VLAN tag insert/strip */
|
|
ctrl = E1000_READ_REG(&adapter->hw, CTRL);
|
|
ctrl &= ~E1000_CTRL_VME;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
|
|
|
|
/* disable VLAN filtering */
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl &= ~E1000_RCTL_VFE;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
}
|
|
|
|
e1000_irq_enable(adapter);
|
|
}
|
|
|
|
static void
|
|
e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
uint32_t vfta, index;
|
|
|
|
/* add VID to filter table */
|
|
index = (vid >> 5) & 0x7F;
|
|
vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
|
|
vfta |= (1 << (vid & 0x1F));
|
|
e1000_write_vfta(&adapter->hw, index, vfta);
|
|
}
|
|
|
|
static void
|
|
e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
|
|
{
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
uint32_t vfta, index;
|
|
|
|
e1000_irq_disable(adapter);
|
|
|
|
if(adapter->vlgrp)
|
|
adapter->vlgrp->vlan_devices[vid] = NULL;
|
|
|
|
e1000_irq_enable(adapter);
|
|
|
|
/* remove VID from filter table */
|
|
index = (vid >> 5) & 0x7F;
|
|
vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
|
|
vfta &= ~(1 << (vid & 0x1F));
|
|
e1000_write_vfta(&adapter->hw, index, vfta);
|
|
}
|
|
|
|
static void
|
|
e1000_restore_vlan(struct e1000_adapter *adapter)
|
|
{
|
|
e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
|
|
|
|
if(adapter->vlgrp) {
|
|
uint16_t vid;
|
|
for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
|
|
if(!adapter->vlgrp->vlan_devices[vid])
|
|
continue;
|
|
e1000_vlan_rx_add_vid(adapter->netdev, vid);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
|
|
{
|
|
adapter->hw.autoneg = 0;
|
|
|
|
switch(spddplx) {
|
|
case SPEED_10 + DUPLEX_HALF:
|
|
adapter->hw.forced_speed_duplex = e1000_10_half;
|
|
break;
|
|
case SPEED_10 + DUPLEX_FULL:
|
|
adapter->hw.forced_speed_duplex = e1000_10_full;
|
|
break;
|
|
case SPEED_100 + DUPLEX_HALF:
|
|
adapter->hw.forced_speed_duplex = e1000_100_half;
|
|
break;
|
|
case SPEED_100 + DUPLEX_FULL:
|
|
adapter->hw.forced_speed_duplex = e1000_100_full;
|
|
break;
|
|
case SPEED_1000 + DUPLEX_FULL:
|
|
adapter->hw.autoneg = 1;
|
|
adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
|
|
break;
|
|
case SPEED_1000 + DUPLEX_HALF: /* not supported */
|
|
default:
|
|
DPRINTK(PROBE, ERR,
|
|
"Unsupported Speed/Duplexity configuration\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
e1000_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
|
|
{
|
|
struct pci_dev *pdev = NULL;
|
|
|
|
switch(event) {
|
|
case SYS_DOWN:
|
|
case SYS_HALT:
|
|
case SYS_POWER_OFF:
|
|
while((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) {
|
|
if(pci_dev_driver(pdev) == &e1000_driver)
|
|
e1000_suspend(pdev, 3);
|
|
}
|
|
}
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static int
|
|
e1000_suspend(struct pci_dev *pdev, uint32_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
uint32_t ctrl, ctrl_ext, rctl, manc, status;
|
|
uint32_t wufc = adapter->wol;
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if(netif_running(netdev))
|
|
e1000_down(adapter);
|
|
|
|
status = E1000_READ_REG(&adapter->hw, STATUS);
|
|
if(status & E1000_STATUS_LU)
|
|
wufc &= ~E1000_WUFC_LNKC;
|
|
|
|
if(wufc) {
|
|
e1000_setup_rctl(adapter);
|
|
e1000_set_multi(netdev);
|
|
|
|
/* turn on all-multi mode if wake on multicast is enabled */
|
|
if(adapter->wol & E1000_WUFC_MC) {
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl |= E1000_RCTL_MPE;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
}
|
|
|
|
if(adapter->hw.mac_type >= e1000_82540) {
|
|
ctrl = E1000_READ_REG(&adapter->hw, 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;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
|
|
}
|
|
|
|
if(adapter->hw.media_type == e1000_media_type_fiber ||
|
|
adapter->hw.media_type == e1000_media_type_internal_serdes) {
|
|
/* keep the laser running in D3 */
|
|
ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
|
|
ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
|
|
}
|
|
|
|
E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
|
|
E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
|
|
pci_enable_wake(pdev, 3, 1);
|
|
pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
|
|
} else {
|
|
E1000_WRITE_REG(&adapter->hw, WUC, 0);
|
|
E1000_WRITE_REG(&adapter->hw, WUFC, 0);
|
|
pci_enable_wake(pdev, 3, 0);
|
|
pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
|
|
}
|
|
|
|
pci_save_state(pdev);
|
|
|
|
if(adapter->hw.mac_type >= e1000_82540 &&
|
|
adapter->hw.media_type == e1000_media_type_copper) {
|
|
manc = E1000_READ_REG(&adapter->hw, MANC);
|
|
if(manc & E1000_MANC_SMBUS_EN) {
|
|
manc |= E1000_MANC_ARP_EN;
|
|
E1000_WRITE_REG(&adapter->hw, MANC, manc);
|
|
pci_enable_wake(pdev, 3, 1);
|
|
pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
|
|
}
|
|
}
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
state = (state > 0) ? 3 : 0;
|
|
pci_set_power_state(pdev, state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int
|
|
e1000_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
uint32_t manc, ret;
|
|
|
|
pci_set_power_state(pdev, 0);
|
|
pci_restore_state(pdev);
|
|
ret = pci_enable_device(pdev);
|
|
if (pdev->is_busmaster)
|
|
pci_set_master(pdev);
|
|
|
|
pci_enable_wake(pdev, 3, 0);
|
|
pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
|
|
|
|
e1000_reset(adapter);
|
|
E1000_WRITE_REG(&adapter->hw, WUS, ~0);
|
|
|
|
if(netif_running(netdev))
|
|
e1000_up(adapter);
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
if(adapter->hw.mac_type >= e1000_82540 &&
|
|
adapter->hw.media_type == e1000_media_type_copper) {
|
|
manc = E1000_READ_REG(&adapter->hw, MANC);
|
|
manc &= ~(E1000_MANC_ARP_EN);
|
|
E1000_WRITE_REG(&adapter->hw, MANC, manc);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#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;
|
|
disable_irq(adapter->pdev->irq);
|
|
e1000_intr(adapter->pdev->irq, netdev, NULL);
|
|
enable_irq(adapter->pdev->irq);
|
|
}
|
|
#endif
|
|
|
|
/* e1000_main.c */
|