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

     2

     3

  Intel PRO/1000 Linux driver

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  Copyright(c) 1999 - 2006 Intel Corporation.

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  This program is free software; you can redistribute it and/or modify it

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  under the terms and conditions of the GNU General Public License,

     8

  version 2, as published by the Free Software Foundation.

     9

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  This program is distributed in the hope it will be useful, but WITHOUT

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  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

    13

  more details.

    14

    15

  You should have received a copy of the GNU General Public License along with

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  this program; if not, write to the Free Software Foundation, Inc.,

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  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

    18

    19

  The full GNU General Public License is included in this distribution in

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  the file called "COPYING".

    21

    22

  Contact Information:

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  Linux NICS <linux.nics@intel.com>

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  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>

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  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

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    29

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

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#include "e1000-2.6.24-ethercat.h"

    32

#include <net/ip6_checksum.h>

    33

    34

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 "7.3.20-k2"DRIVERNAPI

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const char e1000_driver_version[] = DRV_VERSION;

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static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";

    44

    45

/* e1000_pci_tbl - PCI Device ID Table

    46

 *

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 * Last entry must be all 0s

    48

 *

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 * Macro expands to...

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 *   {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}

    51

 */

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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(0x1049),

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	INTEL_E1000_ETHERNET_DEVICE(0x104A),

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	INTEL_E1000_ETHERNET_DEVICE(0x104B),

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	INTEL_E1000_ETHERNET_DEVICE(0x104C),

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	INTEL_E1000_ETHERNET_DEVICE(0x104D),

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	INTEL_E1000_ETHERNET_DEVICE(0x105E),

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	INTEL_E1000_ETHERNET_DEVICE(0x105F),

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	INTEL_E1000_ETHERNET_DEVICE(0x1060),

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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(0x107D),

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	INTEL_E1000_ETHERNET_DEVICE(0x107E),

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	INTEL_E1000_ETHERNET_DEVICE(0x107F),

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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(0x1096),

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	INTEL_E1000_ETHERNET_DEVICE(0x1098),

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	INTEL_E1000_ETHERNET_DEVICE(0x1099),

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	INTEL_E1000_ETHERNET_DEVICE(0x109A),

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	INTEL_E1000_ETHERNET_DEVICE(0x10A4),

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	INTEL_E1000_ETHERNET_DEVICE(0x10A5),

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	INTEL_E1000_ETHERNET_DEVICE(0x10B5),

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	INTEL_E1000_ETHERNET_DEVICE(0x10B9),

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	INTEL_E1000_ETHERNET_DEVICE(0x10BA),

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	INTEL_E1000_ETHERNET_DEVICE(0x10BB),

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	INTEL_E1000_ETHERNET_DEVICE(0x10BC),

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	INTEL_E1000_ETHERNET_DEVICE(0x10C4),

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	INTEL_E1000_ETHERNET_DEVICE(0x10C5),

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	INTEL_E1000_ETHERNET_DEVICE(0x10D5),

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	INTEL_E1000_ETHERNET_DEVICE(0x10D9),

   115

	INTEL_E1000_ETHERNET_DEVICE(0x10DA),

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	/* required last entry */

   117

	{0,}

   118

};

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// do not auto-load driver

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// MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);

   122

   123

int e1000_up(struct e1000_adapter *adapter);

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void e1000_down(struct e1000_adapter *adapter);

   125

void e1000_reinit_locked(struct e1000_adapter *adapter);

   126

void e1000_reset(struct e1000_adapter *adapter);

   127

int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);

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int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);

   129

int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);

   130

void e1000_free_all_tx_resources(struct e1000_adapter *adapter);

   131

void e1000_free_all_rx_resources(struct e1000_adapter *adapter);

   132

static int e1000_setup_tx_resources(struct e1000_adapter *adapter,

   133

                             struct e1000_tx_ring *txdr);

   134

static int e1000_setup_rx_resources(struct e1000_adapter *adapter,

   135

                             struct e1000_rx_ring *rxdr);

   136

static void e1000_free_tx_resources(struct e1000_adapter *adapter,

   137

                             struct e1000_tx_ring *tx_ring);

   138

static void e1000_free_rx_resources(struct e1000_adapter *adapter,

   139

                             struct e1000_rx_ring *rx_ring);

   140

void e1000_update_stats(struct e1000_adapter *adapter);

   141

   142

static int e1000_init_module(void);

   143

static void e1000_exit_module(void);

   144

static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);

   145

static void __devexit e1000_remove(struct pci_dev *pdev);

   146

static int e1000_alloc_queues(struct e1000_adapter *adapter);

   147

static int e1000_sw_init(struct e1000_adapter *adapter);

   148

static int e1000_open(struct net_device *netdev);

   149

static int e1000_close(struct net_device *netdev);

   150

static void e1000_configure_tx(struct e1000_adapter *adapter);

   151

static void e1000_configure_rx(struct e1000_adapter *adapter);

   152

static void e1000_setup_rctl(struct e1000_adapter *adapter);

   153

static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);

   154

static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);

   155

static void e1000_clean_tx_ring(struct e1000_adapter *adapter,

   156

                                struct e1000_tx_ring *tx_ring);

   157

static void e1000_clean_rx_ring(struct e1000_adapter *adapter,

   158

                                struct e1000_rx_ring *rx_ring);

   159

static void e1000_set_multi(struct net_device *netdev);

   160

static void e1000_update_phy_info(unsigned long data);

   161

static void e1000_watchdog(unsigned long data);

   162

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);

   164

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);

   166

static int e1000_set_mac(struct net_device *netdev, void *p);

   167

void ec_poll(struct net_device *);

   168

static irqreturn_t e1000_intr(int irq, void *data);

   169

static irqreturn_t e1000_intr_msi(int irq, void *data);

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static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter,

   171

                                    struct e1000_tx_ring *tx_ring);

   172

#ifdef CONFIG_E1000_NAPI

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static int e1000_clean(struct napi_struct *napi, int budget);

   174

static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,

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                                    struct e1000_rx_ring *rx_ring,

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                                    int *work_done, int work_to_do);

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static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,

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                                       struct e1000_rx_ring *rx_ring,

   179

                                       int *work_done, int work_to_do);

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#else

   181

static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,

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                                    struct e1000_rx_ring *rx_ring);

   183

static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,

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                                       struct e1000_rx_ring *rx_ring);

   185

#endif

   186

static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,

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                                   struct e1000_rx_ring *rx_ring,

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				   int cleaned_count);

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static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,

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                                      struct e1000_rx_ring *rx_ring,

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				      int cleaned_count);

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static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);

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static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,

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			   int cmd);

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static void e1000_enter_82542_rst(struct e1000_adapter *adapter);

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static void e1000_leave_82542_rst(struct e1000_adapter *adapter);

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static void e1000_tx_timeout(struct net_device *dev);

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static void e1000_reset_task(struct work_struct *work);

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static void e1000_smartspeed(struct e1000_adapter *adapter);

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static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,

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                                       struct sk_buff *skb);

   202

   203

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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   208

static int e1000_suspend(struct pci_dev *pdev, pm_message_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

   212

static void e1000_shutdown(struct pci_dev *pdev);

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   214

#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

   218

   219

#define COPYBREAK_DEFAULT 256

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static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;

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module_param(copybreak, uint, 0644);

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MODULE_PARM_DESC(copybreak,

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	"Maximum size of packet that is copied to a new buffer on receive");

   224

   225

static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,

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                     pci_channel_state_t state);

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static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);

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static void e1000_io_resume(struct pci_dev *pdev);

   229

   230

static struct pci_error_handlers e1000_err_handler = {

   231

	.error_detected = e1000_io_error_detected,

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	.slot_reset = e1000_io_slot_reset,

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	.resume = e1000_io_resume,

   234

};

   235

   236

static struct pci_driver e1000_driver = {

   237

	.name     = e1000_driver_name,

   238

	.id_table = e1000_pci_tbl,

   239

	.probe    = e1000_probe,

   240

	.remove   = __devexit_p(e1000_remove),

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#ifdef CONFIG_PM

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	/* Power Managment Hooks */

   243

	.suspend  = e1000_suspend,

   244

	.resume   = e1000_resume,

   245

#endif

   246

	.shutdown = e1000_shutdown,

   247

	.err_handler = &e1000_err_handler

   248

};

   249

   250

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

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MODULE_DESCRIPTION("EtherCAT-capable Intel(R) PRO/1000 Network Driver");

   252

MODULE_LICENSE("GPL");

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MODULE_VERSION(DRV_VERSION);

   254

   255

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)");

   258

   259

/**

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 * e1000_init_module - Driver Registration Routine

   261

 *

   262

 * e1000_init_module is the first routine called when the driver is

   263

 * loaded. All it does is register with the PCI subsystem.

   264

 **/

   265

   266

static int __init

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e1000_init_module(void)

   268

{

   269

	int ret;

   270

	printk(KERN_INFO "%s - version %s\n",

   271

	       e1000_driver_string, e1000_driver_version);

   272

   273

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

   274

   275

	ret = pci_register_driver(&e1000_driver);

   276

	if (copybreak != COPYBREAK_DEFAULT) {

   277

		if (copybreak == 0)

   278

			printk(KERN_INFO "e1000: copybreak disabled\n");

   279

		else

   280

			printk(KERN_INFO "e1000: copybreak enabled for "

   281

			       "packets <= %u bytes\n", copybreak);

   282

	}

   283

	return ret;

   284

}

   285

   286

module_init(e1000_init_module);

   287

   288

/**

   289

 * e1000_exit_module - Driver Exit Cleanup Routine

   290

 *

   291

 * e1000_exit_module is called just before the driver is removed

   292

 * from memory.

   293

 **/

   294

   295

static void __exit

   296

e1000_exit_module(void)

   297

{

   298

	pci_unregister_driver(&e1000_driver);

   299

}

   300

   301

module_exit(e1000_exit_module);

   302

   303

static int e1000_request_irq(struct e1000_adapter *adapter)

   304

{

   305

	struct net_device *netdev = adapter->netdev;

   306

	void (*handler) = &e1000_intr;

   307

	int irq_flags = IRQF_SHARED;

   308

	int err;

   309

   310

	if (adapter->ecdev)

   311

		return 0;

   312

   313

	if (adapter->hw.mac_type >= e1000_82571) {

   314

		adapter->have_msi = !pci_enable_msi(adapter->pdev);

   315

		if (adapter->have_msi) {

   316

			handler = &e1000_intr_msi;

   317

			irq_flags = 0;

   318

		}

   319

	}

   320

   321

	err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,

   322

	                  netdev);

   323

	if (err) {

   324

		if (adapter->have_msi)

   325

			pci_disable_msi(adapter->pdev);

   326

		DPRINTK(PROBE, ERR,

   327

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

   328

	}

   329

   330

	return err;

   331

}

   332

   333

static void e1000_free_irq(struct e1000_adapter *adapter)

   334

{

   335

	struct net_device *netdev = adapter->netdev;

   336

   337

	if (adapter->ecdev)

   338

		return;

   339

   340

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

   341

   342

	if (adapter->have_msi)

   343

		pci_disable_msi(adapter->pdev);

   344

}

   345

   346

/**

   347

 * e1000_irq_disable - Mask off interrupt generation on the NIC

   348

 * @adapter: board private structure

   349

 **/

   350

   351

static void

   352

e1000_irq_disable(struct e1000_adapter *adapter)

   353

{

   354

    if (adapter->ecdev)

   355

        return;

   356

   357

	atomic_inc(&adapter->irq_sem);

   358

	E1000_WRITE_REG(&adapter->hw, IMC, ~0);

   359

	E1000_WRITE_FLUSH(&adapter->hw);

   360

	synchronize_irq(adapter->pdev->irq);

   361

}

   362

   363

/**

   364

 * e1000_irq_enable - Enable default interrupt generation settings

   365

 * @adapter: board private structure

   366

 **/

   367

   368

static void

   369

e1000_irq_enable(struct e1000_adapter *adapter)

   370

{

   371

    if (adapter->ecdev)

   372

        return;

   373

   374

	if (likely(atomic_dec_and_test(&adapter->irq_sem))) {

   375

		E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);

   376

		E1000_WRITE_FLUSH(&adapter->hw);

   377

	}

   378

}

   379

   380

static void

   381

e1000_update_mng_vlan(struct e1000_adapter *adapter)

   382

{

   383

	struct net_device *netdev = adapter->netdev;

   384

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

   385

	uint16_t old_vid = adapter->mng_vlan_id;

   386

	if (adapter->vlgrp) {

   387

		if (!vlan_group_get_device(adapter->vlgrp, vid)) {

   388

			if (adapter->hw.mng_cookie.status &

   389

				E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {

   390

				e1000_vlan_rx_add_vid(netdev, vid);

   391

				adapter->mng_vlan_id = vid;

   392

			} else

   393

				adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;

   394

   395

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

   396

					(vid != old_vid) &&

   397

			    !vlan_group_get_device(adapter->vlgrp, old_vid))

   398

				e1000_vlan_rx_kill_vid(netdev, old_vid);

   399

		} else

   400

			adapter->mng_vlan_id = vid;

   401

	}

   402

}

   403

   404

/**

   405

 * e1000_release_hw_control - release control of the h/w to f/w

   406

 * @adapter: address of board private structure

   407

 *

   408

 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.

   409

 * For ASF and Pass Through versions of f/w this means that the

   410

 * driver is no longer loaded. For AMT version (only with 82573) i

   411

 * of the f/w this means that the network i/f is closed.

   412

 *

   413

 **/

   414

   415

static void

   416

e1000_release_hw_control(struct e1000_adapter *adapter)

   417

{

   418

	uint32_t ctrl_ext;

   419

	uint32_t swsm;

   420

   421

	/* Let firmware taken over control of h/w */

   422

	switch (adapter->hw.mac_type) {

   423

	case e1000_82573:

   424

		swsm = E1000_READ_REG(&adapter->hw, SWSM);

   425

		E1000_WRITE_REG(&adapter->hw, SWSM,

   426

				swsm & ~E1000_SWSM_DRV_LOAD);

   427

		break;

   428

	case e1000_82571:

   429

	case e1000_82572:

   430

	case e1000_80003es2lan:

   431

	case e1000_ich8lan:

   432

		ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);

   433

		E1000_WRITE_REG(&adapter->hw, CTRL_EXT,

   434

				ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);

   435

		break;

   436

	default:

   437

		break;

   438

	}

   439

}

   440

   441

/**

   442

 * e1000_get_hw_control - get control of the h/w from f/w

   443

 * @adapter: address of board private structure

   444

 *

   445

 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.

   446

 * For ASF and Pass Through versions of f/w this means that

   447

 * the driver is loaded. For AMT version (only with 82573)

   448

 * of the f/w this means that the network i/f is open.

   449

 *

   450

 **/

   451

   452

static void

   453

e1000_get_hw_control(struct e1000_adapter *adapter)

   454

{

   455

	uint32_t ctrl_ext;

   456

	uint32_t swsm;

   457

   458

	/* Let firmware know the driver has taken over */

   459

	switch (adapter->hw.mac_type) {

   460

	case e1000_82573:

   461

		swsm = E1000_READ_REG(&adapter->hw, SWSM);

   462

		E1000_WRITE_REG(&adapter->hw, SWSM,

   463

				swsm | E1000_SWSM_DRV_LOAD);

   464

		break;

   465

	case e1000_82571:

   466

	case e1000_82572:

   467

	case e1000_80003es2lan:

   468

	case e1000_ich8lan:

   469

		ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);

   470

		E1000_WRITE_REG(&adapter->hw, CTRL_EXT,

   471

				ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);

   472

		break;

   473

	default:

   474

		break;

   475

	}

   476

}

   477

   478

static void

   479

e1000_init_manageability(struct e1000_adapter *adapter)

   480

{

   481

	if (adapter->en_mng_pt) {

   482

		uint32_t manc = E1000_READ_REG(&adapter->hw, MANC);

   483

   484

		/* disable hardware interception of ARP */

   485

		manc &= ~(E1000_MANC_ARP_EN);

   486

   487

		/* enable receiving management packets to the host */

   488

		/* this will probably generate destination unreachable messages

   489

		 * from the host OS, but the packets will be handled on SMBUS */

   490

		if (adapter->hw.has_manc2h) {

   491

			uint32_t manc2h = E1000_READ_REG(&adapter->hw, MANC2H);

   492

   493

			manc |= E1000_MANC_EN_MNG2HOST;

   494

#define E1000_MNG2HOST_PORT_623 (1 << 5)

   495

#define E1000_MNG2HOST_PORT_664 (1 << 6)

   496

			manc2h |= E1000_MNG2HOST_PORT_623;

   497

			manc2h |= E1000_MNG2HOST_PORT_664;

   498

			E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h);

   499

		}

   500

   501

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

   502

	}

   503

}

   504

   505

static void

   506

e1000_release_manageability(struct e1000_adapter *adapter)

   507

{

   508

	if (adapter->en_mng_pt) {

   509

		uint32_t manc = E1000_READ_REG(&adapter->hw, MANC);

   510

   511

		/* re-enable hardware interception of ARP */

   512

		manc |= E1000_MANC_ARP_EN;

   513

   514

		if (adapter->hw.has_manc2h)

   515

			manc &= ~E1000_MANC_EN_MNG2HOST;

   516

   517

		/* don't explicitly have to mess with MANC2H since

   518

		 * MANC has an enable disable that gates MANC2H */

   519

   520

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

   521

	}

   522

}

   523

   524

/**

   525

 * e1000_configure - configure the hardware for RX and TX

   526

 * @adapter = private board structure

   527

 **/

   528

static void e1000_configure(struct e1000_adapter *adapter)

   529

{