/* 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 s32 atlx_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data); static u32 atlx_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr); static void atlx_set_mac_addr(struct atl1_hw *hw); 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); #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)) netdev->addr_assign_type &= ~NET_ADDR_RANDOM; #endif 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 netdev_hw_addr *ha; 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 */ netdev_for_each_mc_addr(ha, netdev) { hash_value = atlx_hash_mc_addr(hw, ha->addr); atlx_hash_set(hw, hash_value); } } static inline void atlx_imr_set(struct atlx_adapter *adapter, unsigned int imr) { iowrite32(imr, adapter->hw.hw_addr + REG_IMR); ioread32(adapter->hw.hw_addr + REG_IMR); } /* * atlx_irq_enable - Enable default interrupt generation settings * @adapter: board private structure */ static void atlx_irq_enable(struct atlx_adapter *adapter) { atlx_imr_set(adapter, IMR_NORMAL_MASK); adapter->int_enabled = true; } /* * atlx_irq_disable - Mask off interrupt generation on the NIC * @adapter: board private structure */ static void atlx_irq_disable(struct atlx_adapter *adapter) { adapter->int_enabled = false; atlx_imr_set(adapter, 0); 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_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->reset_dev_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_mode(netdev_features_t features, u32 *ctrl) { if (features & NETIF_F_HW_VLAN_RX) { /* enable VLAN tag insert/strip */ *ctrl |= MAC_CTRL_RMV_VLAN; } else { /* disable VLAN tag insert/strip */ *ctrl &= ~MAC_CTRL_RMV_VLAN; } } static void atlx_vlan_mode(struct net_device *netdev, netdev_features_t features) { 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 */ ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL); __atlx_vlan_mode(features, &ctrl); 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_mode(adapter->netdev, adapter->netdev->features); } #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) static netdev_features_t atlx_fix_features(struct net_device *netdev, netdev_features_t features) { /* * Since there is no support for separate rx/tx vlan accel * enable/disable make sure tx flag is always in same state as rx. */ if (features & NETIF_F_HW_VLAN_RX) features |= NETIF_F_HW_VLAN_TX; else features &= ~NETIF_F_HW_VLAN_TX; return features; } static int atlx_set_features(struct net_device *netdev, netdev_features_t features) { netdev_features_t changed = netdev->features ^ features; if (changed & NETIF_F_HW_VLAN_RX) atlx_vlan_mode(netdev, features); return 0; } #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)) */ #endif /* ATLX_C */