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/*******************************************************************************

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  Copyright(c) 1999 - 2005 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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  vim: noexpandtab

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*******************************************************************************/

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#include "e1000-2.6.13-ethercat.h"

    32

    33

/* Change Log

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 * 6.0.58       4/20/05

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 *   o Accepted ethtool cleanup patch from Stephen Hemminger 

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 * 6.0.44+	2/15/05

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 *   o applied Anton's patch to resolve tx hang in hardware

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 *   o Applied Andrew Mortons patch - e1000 stops working after resume

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 */

    40

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char e1000_driver_name[] = "ec_e1000";

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static char e1000_driver_string[] = "EtherCAT 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		"6.0.60-k2"DRIVERNAPI

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char e1000_driver_version[] = DRV_VERSION;

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char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation.";

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    52

/* 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)}

    58

 */

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static struct pci_device_id e1000_pci_tbl[] = {

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	INTEL_E1000_ETHERNET_DEVICE(0x1000),

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	INTEL_E1000_ETHERNET_DEVICE(0x1001),

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	INTEL_E1000_ETHERNET_DEVICE(0x1004),

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	INTEL_E1000_ETHERNET_DEVICE(0x1008),

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	INTEL_E1000_ETHERNET_DEVICE(0x1009),

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	INTEL_E1000_ETHERNET_DEVICE(0x100C),

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	INTEL_E1000_ETHERNET_DEVICE(0x100D),

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	INTEL_E1000_ETHERNET_DEVICE(0x100E),

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	INTEL_E1000_ETHERNET_DEVICE(0x100F),

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	INTEL_E1000_ETHERNET_DEVICE(0x1010),

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	INTEL_E1000_ETHERNET_DEVICE(0x1011),

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	INTEL_E1000_ETHERNET_DEVICE(0x1012),

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	INTEL_E1000_ETHERNET_DEVICE(0x1013),

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	INTEL_E1000_ETHERNET_DEVICE(0x1014),

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	INTEL_E1000_ETHERNET_DEVICE(0x1015),

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	INTEL_E1000_ETHERNET_DEVICE(0x1016),

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	INTEL_E1000_ETHERNET_DEVICE(0x1017),

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	INTEL_E1000_ETHERNET_DEVICE(0x1018),

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	INTEL_E1000_ETHERNET_DEVICE(0x1019),

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	INTEL_E1000_ETHERNET_DEVICE(0x101A),

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	INTEL_E1000_ETHERNET_DEVICE(0x101D),

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	INTEL_E1000_ETHERNET_DEVICE(0x101E),

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	INTEL_E1000_ETHERNET_DEVICE(0x1026),

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	INTEL_E1000_ETHERNET_DEVICE(0x1027),

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	INTEL_E1000_ETHERNET_DEVICE(0x1028),

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	INTEL_E1000_ETHERNET_DEVICE(0x1075),

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	INTEL_E1000_ETHERNET_DEVICE(0x1076),

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	INTEL_E1000_ETHERNET_DEVICE(0x1077),

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	INTEL_E1000_ETHERNET_DEVICE(0x1078),

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	INTEL_E1000_ETHERNET_DEVICE(0x1079),

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	INTEL_E1000_ETHERNET_DEVICE(0x107A),

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	INTEL_E1000_ETHERNET_DEVICE(0x107B),

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	INTEL_E1000_ETHERNET_DEVICE(0x107C),

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	INTEL_E1000_ETHERNET_DEVICE(0x108A),

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	INTEL_E1000_ETHERNET_DEVICE(0x108B),

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	INTEL_E1000_ETHERNET_DEVICE(0x108C),

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	INTEL_E1000_ETHERNET_DEVICE(0x1099),

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	/* required last entry */

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	{0,}

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};

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// do not auto-load driver

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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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   114

/* 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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void ec_poll(struct net_device *);

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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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static boolean_t e1000_clean_rx_irq_ps(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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static boolean_t e1000_clean_rx_irq_ps(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 void e1000_alloc_rx_buffers_ps(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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   164

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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#ifdef CONFIG_PM

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static int e1000_suspend(struct pci_dev *pdev, uint32_t state);

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static int e1000_resume(struct pci_dev *pdev);

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#endif

   173

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#ifdef CONFIG_NET_POLL_CONTROLLER

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/* for netdump / net console */

   176

static void e1000_netpoll (struct net_device *netdev);

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#endif

   178

   179

/* Exported from other modules */

   180

   181

extern void e1000_check_options(struct e1000_adapter *adapter);

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   183

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("Florian Pose <fp@igh-essen.com>");

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MODULE_DESCRIPTION("EtherCAT-capable 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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   200

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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 **/

   210

   211

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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   218

	printk(KERN_INFO "%s\n", e1000_copyright);

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   220

	ret = pci_module_init(&e1000_driver);

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	return ret;

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}

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module_init(e1000_init_module);

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   227

/**

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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.

   232

 **/

   233

   234

static void __exit

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e1000_exit_module(void)

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{

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	pci_unregister_driver(&e1000_driver);

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}

   239

   240

module_exit(e1000_exit_module);

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   242

/**

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 * e1000_irq_disable - Mask off interrupt generation on the NIC

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 * @adapter: board private structure

   245

 **/

   246

   247

static inline void

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e1000_irq_disable(struct e1000_adapter *adapter)

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{

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    if (adapter->ecdev)

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        return;

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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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   258

/**

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 * e1000_irq_enable - Enable default interrupt generation settings

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 * @adapter: board private structure

   261

 **/

   262

   263

static inline void

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e1000_irq_enable(struct e1000_adapter *adapter)

   265

{

   266

    if (adapter->ecdev)

   267

        return;

   268

	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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	}

   272

}

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void

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e1000_update_mng_vlan(struct e1000_adapter *adapter)

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{

   276

	struct net_device *netdev = adapter->netdev;

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	uint16_t vid = adapter->hw.mng_cookie.vlan_id;

   278

	uint16_t old_vid = adapter->mng_vlan_id;

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	if(adapter->vlgrp) {

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		if(!adapter->vlgrp->vlan_devices[vid]) {

   281

			if(adapter->hw.mng_cookie.status &

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				E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {

   283

				e1000_vlan_rx_add_vid(netdev, vid);

   284

				adapter->mng_vlan_id = vid;

   285

			} else

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				adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;

   287

   288

			if((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) &&

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					(vid != old_vid) && 

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					!adapter->vlgrp->vlan_devices[old_vid])

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				e1000_vlan_rx_kill_vid(netdev, old_vid);

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		}

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	}

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}

   295

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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;

   301

   302

	/* hardware has been reset, we need to reload some things */

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   304

	/* 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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	}

   311

   312

	e1000_set_multi(netdev);

   313

   314

	e1000_restore_vlan(adapter);

   315

   316

	e1000_configure_tx(adapter);

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	e1000_setup_rctl(adapter);

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	e1000_configure_rx(adapter);

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	adapter->alloc_rx_buf(adapter);

   320

   321

#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;

   328

		}

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	}

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#endif

   331

    if (!adapter->ecdev) {

   332

        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))) {

   335

            DPRINTK(PROBE, ERR,

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                    "Unable to allocate interrupt Error: %d\n", err);

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            return err;

   338

        }

   339

   340

        mod_timer(&adapter->watchdog_timer, jiffies);

   341

   342

#ifdef CONFIG_E1000_NAPI

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        netif_poll_enable(netdev);

   344

#endif

   345

        e1000_irq_enable(adapter);

   346

    }

   347

   348

	return 0;

   349

}

   350

   351

void

   352

e1000_down(struct e1000_adapter *adapter)

   353

{

   354

	struct net_device *netdev = adapter->netdev;

   355

   356

    if (!adapter->ecdev) {

   357

        e1000_irq_disable(adapter);

   358

        free_irq(adapter->pdev->irq, netdev);

   359

    }

   360

#ifdef CONFIG_PCI_MSI

   361

	if(adapter->hw.mac_type > e1000_82547_rev_2 &&

   362

	   adapter->have_msi == TRUE)

   363

		pci_disable_msi(adapter->pdev);

   364

#endif

   365

    if (!adapter->ecdev) {

   366

        del_timer_sync(&adapter->tx_fifo_stall_timer);

   367

        del_timer_sync(&adapter->watchdog_timer);

   368

        del_timer_sync(&adapter->phy_info_timer);

   369

   370

#ifdef CONFIG_E1000_NAPI

   371

        netif_poll_disable(netdev);

   372

#endif

   373

    }

   374

	adapter->link_speed = 0;

   375

	adapter->link_duplex = 0;

   376

	if (!adapter->ecdev) {

   377

		netif_carrier_off(netdev);

   378

		netif_stop_queue(netdev);

   379

	}

   380

   381

	e1000_reset(adapter);

   382

	e1000_clean_tx_ring(adapter);

   383

	e1000_clean_rx_ring(adapter);

   384

   385

	/* If WoL is not enabled

   386

	 * and management mode is not IAMT

   387

	 * Power down the PHY so no link is implied when interface is down */

   388

	if(!adapter->wol && adapter->hw.mac_type >= e1000_82540 &&

   389

	   adapter->hw.media_type == e1000_media_type_copper &&

   390

	   !e1000_check_mng_mode(&adapter->hw) &&

   391

	   !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN)) {

   392

		uint16_t mii_reg;

   393

		e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);

   394

		mii_reg |= MII_CR_POWER_DOWN;

   395

		e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);

   396

		mdelay(1);

   397

	}

   398

}

   399

   400

void

   401

e1000_reset(struct e1000_adapter *adapter)

   402

{

   403

	struct net_device *netdev = adapter->netdev;

   404

	uint32_t pba, manc;

   405

	uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;

   406

	uint16_t fc_low_water_mark = E1000_FC_LOW_DIFF;

   407

   408

	/* Repartition Pba for greater than 9k mtu

   409

	 * To take effect CTRL.RST is required.

   410

	 */

   411

   412

	switch (adapter->hw.mac_type) {

   413

	case e1000_82547:

   414

	case e1000_82547_rev_2:

   415

		pba = E1000_PBA_30K;

   416

		break;

   417

	case e1000_82573:

   418

		pba = E1000_PBA_12K;

   419

		break;

   420

	default:

   421

		pba = E1000_PBA_48K;

   422

		break;

   423

	}

   424

   425

	if((adapter->hw.mac_type != e1000_82573) &&

   426

	   (adapter->rx_buffer_len > E1000_RXBUFFER_8192)) {

   427

		pba -= 8; /* allocate more FIFO for Tx */

   428

		/* send an XOFF when there is enough space in the

   429

		 * Rx FIFO to hold one extra full size Rx packet 

   430

		*/

   431

		fc_high_water_mark = netdev->mtu + ENET_HEADER_SIZE + 

   432

					ETHERNET_FCS_SIZE + 1;

   433

		fc_low_water_mark = fc_high_water_mark + 8;

   434

	}

   435

   436

   437

	if(adapter->hw.mac_type == e1000_82547) {

   438

		adapter->tx_fifo_head = 0;

   439

		adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;

   440

		adapter->tx_fifo_size =

   441

			(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;

   442

		atomic_set(&adapter->tx_fifo_stall, 0);

   443

	}

   444

   445

	E1000_WRITE_REG(&adapter->hw, PBA, pba);

   446

   447

	/* flow control settings */

   448

	adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) -

   449

				    fc_high_water_mark;

   450

	adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) -

   451

				   fc_low_water_mark;

   452

	adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;

   453

	adapter->hw.fc_send_xon = 1;

   454

	adapter->hw.fc = adapter->hw.original_fc;

   455

   456

	/* Allow time for pending master requests to run */

   457

	e1000_reset_hw(&adapter->hw);

   458

	if(adapter->hw.mac_type >= e1000_82544)

   459

		E1000_WRITE_REG(&adapter->hw, WUC, 0);

   460

	if(e1000_init_hw(&adapter->hw))

   461

		DPRINTK(PROBE, ERR, "Hardware Error\n");

   462

	e1000_update_mng_vlan(adapter);

   463

	/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */

   464

	E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);

   465

   466

	e1000_reset_adaptive(&adapter->hw);

   467

	e1000_phy_get_info(&adapter->hw, &adapter->phy_info);

   468

	if (adapter->en_mng_pt) {

   469

		manc = E1000_READ_REG(&adapter->hw, MANC);

   470

		manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);

   471

		E1000_WRITE_REG(&adapter->hw, MANC, manc);

   472

	}

   473

}

   474

   475

/**

   476

 * e1000_probe - Device Initialization Routine

   477

 * @pdev: PCI device information struct

   478

 * @ent: entry in e1000_pci_tbl

   479

 *

   480

 * Returns 0 on success, negative on failure

   481

 *

   482

 * e1000_probe initializes an adapter identified by a pci_dev structure.

   483

 * The OS initialization, configuring of the adapter private structure,

   484

 * and a hardware reset occur.

   485

 **/

   486

   487

static int __devinit

   488

e1000_probe(struct pci_dev *pdev,

   489

            const struct pci_device_id *ent)

   490

{

   491

	struct net_device *netdev;

   492

	struct e1000_adapter *adapter;

   493

	unsigned long mmio_start, mmio_len;

   494

	uint32_t swsm;

   495

   496

	static int cards_found = 0;

   497

	int i, err, pci_using_dac;

   498

	uint16_t eeprom_data;

   499

	uint16_t eeprom_apme_mask = E1000_EEPROM_APME;

   500

	if((err = pci_enable_device(pdev)))

   501

		return err;

   502

   503

	if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {

   504

		pci_using_dac = 1;

   505

	} else {

   506

		if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {

   507

			E1000_ERR("No usable DMA configuration, aborting\n");

   508

			return err;

   509

		}

   510

		pci_using_dac = 0;

   511

	}

   512

   513

	if((err = pci_request_regions(pdev, e1000_driver_name)))

   514

		return err;

   515

   516

	pci_set_master(pdev);

   517

   518

	netdev = alloc_etherdev(sizeof(struct e1000_adapter));

   519

	if(!netdev) {

   520

		err = -ENOMEM;

   521

		goto err_alloc_etherdev;

   522

	}

   523

   524

	SET_MODULE_OWNER(netdev);

   525

	SET_NETDEV_DEV(netdev, &pdev->dev);

   526