![Jay Cliburn](/assets/img/avatar_default.png)
See http://marc.info/?l=linux-netdev&m=121931988219314&w=2 Stop the queue and turn off carrier to prevent transmit timeouts when the cable is unplugged/replugged. Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
256 lines
7.4 KiB
C
256 lines
7.4 KiB
C
/* atlx.c -- common functions for Attansic network drivers
|
|
*
|
|
* Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
|
|
* Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
|
|
* Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
|
|
* Copyright(c) 2007 Atheros Corporation. All rights reserved.
|
|
*
|
|
* Derived from Intel e1000 driver
|
|
* Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc., 59
|
|
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/* Including this file like a header is a temporary hack, I promise. -- CHS */
|
|
#ifndef ATLX_C
|
|
#define ATLX_C
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/if.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/socket.h>
|
|
#include <linux/sockios.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/string.h>
|
|
#include <linux/types.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
#include "atlx.h"
|
|
|
|
static struct atlx_spi_flash_dev flash_table[] = {
|
|
/* MFR_NAME WRSR READ PRGM WREN WRDI RDSR RDID SEC_ERS CHIP_ERS */
|
|
{"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52, 0x62},
|
|
{"SST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20, 0x60},
|
|
{"ST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8, 0xC7},
|
|
};
|
|
|
|
static int atlx_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
|
{
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
case SIOCGMIIREG:
|
|
case SIOCSMIIREG:
|
|
return atlx_mii_ioctl(netdev, ifr, cmd);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* atlx_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 atlx_set_mac(struct net_device *netdev, void *p)
|
|
{
|
|
struct atlx_adapter *adapter = netdev_priv(netdev);
|
|
struct sockaddr *addr = p;
|
|
|
|
if (netif_running(netdev))
|
|
return -EBUSY;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
|
|
|
|
atlx_set_mac_addr(&adapter->hw);
|
|
return 0;
|
|
}
|
|
|
|
static void atlx_check_for_link(struct atlx_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
u16 phy_data = 0;
|
|
|
|
spin_lock(&adapter->lock);
|
|
adapter->phy_timer_pending = false;
|
|
atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
|
|
atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
|
|
spin_unlock(&adapter->lock);
|
|
|
|
/* notify upper layer link down ASAP */
|
|
if (!(phy_data & BMSR_LSTATUS)) {
|
|
/* Link Down */
|
|
if (netif_carrier_ok(netdev)) {
|
|
/* old link state: Up */
|
|
dev_info(&adapter->pdev->dev, "%s link is down\n",
|
|
netdev->name);
|
|
adapter->link_speed = SPEED_0;
|
|
netif_carrier_off(netdev);
|
|
}
|
|
}
|
|
schedule_work(&adapter->link_chg_task);
|
|
}
|
|
|
|
/*
|
|
* atlx_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 atlx_set_multi(struct net_device *netdev)
|
|
{
|
|
struct atlx_adapter *adapter = netdev_priv(netdev);
|
|
struct atlx_hw *hw = &adapter->hw;
|
|
struct dev_mc_list *mc_ptr;
|
|
u32 rctl;
|
|
u32 hash_value;
|
|
|
|
/* Check for Promiscuous and All Multicast modes */
|
|
rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
|
|
if (netdev->flags & IFF_PROMISC)
|
|
rctl |= MAC_CTRL_PROMIS_EN;
|
|
else if (netdev->flags & IFF_ALLMULTI) {
|
|
rctl |= MAC_CTRL_MC_ALL_EN;
|
|
rctl &= ~MAC_CTRL_PROMIS_EN;
|
|
} else
|
|
rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
|
|
|
|
iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);
|
|
|
|
/* clear the old settings from the multicast hash table */
|
|
iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
|
|
iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
|
|
|
|
/* compute mc addresses' hash value ,and put it into hash table */
|
|
for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
|
|
hash_value = atlx_hash_mc_addr(hw, mc_ptr->dmi_addr);
|
|
atlx_hash_set(hw, hash_value);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* atlx_irq_enable - Enable default interrupt generation settings
|
|
* @adapter: board private structure
|
|
*/
|
|
static void atlx_irq_enable(struct atlx_adapter *adapter)
|
|
{
|
|
iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
|
|
ioread32(adapter->hw.hw_addr + REG_IMR);
|
|
}
|
|
|
|
/*
|
|
* atlx_irq_disable - Mask off interrupt generation on the NIC
|
|
* @adapter: board private structure
|
|
*/
|
|
static void atlx_irq_disable(struct atlx_adapter *adapter)
|
|
{
|
|
iowrite32(0, adapter->hw.hw_addr + REG_IMR);
|
|
ioread32(adapter->hw.hw_addr + REG_IMR);
|
|
synchronize_irq(adapter->pdev->irq);
|
|
}
|
|
|
|
static void atlx_clear_phy_int(struct atlx_adapter *adapter)
|
|
{
|
|
u16 phy_data;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&adapter->lock, flags);
|
|
atlx_read_phy_reg(&adapter->hw, 19, &phy_data);
|
|
spin_unlock_irqrestore(&adapter->lock, flags);
|
|
}
|
|
|
|
/*
|
|
* atlx_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 *atlx_get_stats(struct net_device *netdev)
|
|
{
|
|
struct atlx_adapter *adapter = netdev_priv(netdev);
|
|
return &adapter->net_stats;
|
|
}
|
|
|
|
/*
|
|
* atlx_tx_timeout - Respond to a Tx Hang
|
|
* @netdev: network interface device structure
|
|
*/
|
|
static void atlx_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct atlx_adapter *adapter = netdev_priv(netdev);
|
|
/* Do the reset outside of interrupt context */
|
|
schedule_work(&adapter->tx_timeout_task);
|
|
}
|
|
|
|
/*
|
|
* atlx_link_chg_task - deal with link change event Out of interrupt context
|
|
*/
|
|
static void atlx_link_chg_task(struct work_struct *work)
|
|
{
|
|
struct atlx_adapter *adapter;
|
|
unsigned long flags;
|
|
|
|
adapter = container_of(work, struct atlx_adapter, link_chg_task);
|
|
|
|
spin_lock_irqsave(&adapter->lock, flags);
|
|
atlx_check_link(adapter);
|
|
spin_unlock_irqrestore(&adapter->lock, flags);
|
|
}
|
|
|
|
static void atlx_vlan_rx_register(struct net_device *netdev,
|
|
struct vlan_group *grp)
|
|
{
|
|
struct atlx_adapter *adapter = netdev_priv(netdev);
|
|
unsigned long flags;
|
|
u32 ctrl;
|
|
|
|
spin_lock_irqsave(&adapter->lock, flags);
|
|
/* atlx_irq_disable(adapter); FIXME: confirm/remove */
|
|
adapter->vlgrp = grp;
|
|
|
|
if (grp) {
|
|
/* enable VLAN tag insert/strip */
|
|
ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
|
|
ctrl |= MAC_CTRL_RMV_VLAN;
|
|
iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
|
|
} else {
|
|
/* disable VLAN tag insert/strip */
|
|
ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
|
|
ctrl &= ~MAC_CTRL_RMV_VLAN;
|
|
iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
|
|
}
|
|
|
|
/* atlx_irq_enable(adapter); FIXME */
|
|
spin_unlock_irqrestore(&adapter->lock, flags);
|
|
}
|
|
|
|
static void atlx_restore_vlan(struct atlx_adapter *adapter)
|
|
{
|
|
atlx_vlan_rx_register(adapter->netdev, adapter->vlgrp);
|
|
}
|
|
|
|
#endif /* ATLX_C */
|