diff options
Diffstat (limited to 'drivers/net/ethernet/atheros/atlx/atlx.c')
| -rw-r--r-- | drivers/net/ethernet/atheros/atlx/atlx.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/drivers/net/ethernet/atheros/atlx/atlx.c b/drivers/net/ethernet/atheros/atlx/atlx.c new file mode 100644 index 000000000..e8cfbf4ff --- /dev/null +++ b/drivers/net/ethernet/atheros/atlx/atlx.c @@ -0,0 +1,266 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* 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. + */ + +/* 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; + + eth_hw_addr_set(netdev, addr->sa_data); + 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 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, unsigned int txqueue) +{ + 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_CTAG_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); +} + +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_CTAG_RX) + features |= NETIF_F_HW_VLAN_CTAG_TX; + else + features &= ~NETIF_F_HW_VLAN_CTAG_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_CTAG_RX) + atlx_vlan_mode(netdev, features); + + return 0; +} + +#endif /* ATLX_C */ |