| /* |
| * Copyright(c) 2008 - 2009 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. |
| */ |
| |
| #include "atl1c.h" |
| |
| #define ATL1C_DRV_VERSION "1.0.0.1-NAPI" |
| char atl1c_driver_name[] = "atl1c"; |
| char atl1c_driver_version[] = ATL1C_DRV_VERSION; |
| #define PCI_DEVICE_ID_ATTANSIC_L2C 0x1062 |
| #define PCI_DEVICE_ID_ATTANSIC_L1C 0x1063 |
| /* |
| * atl1c_pci_tbl - PCI Device ID Table |
| * |
| * Wildcard entries (PCI_ANY_ID) should come last |
| * Last entry must be all 0s |
| * |
| * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, |
| * Class, Class Mask, private data (not used) } |
| */ |
| static struct pci_device_id atl1c_pci_tbl[] = { |
| {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)}, |
| /* required last entry */ |
| { 0 } |
| }; |
| MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl); |
| |
| MODULE_AUTHOR("Jie Yang <jie.yang@atheros.com>"); |
| MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(ATL1C_DRV_VERSION); |
| |
| static int atl1c_stop_mac(struct atl1c_hw *hw); |
| static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw); |
| static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw); |
| static void atl1c_disable_l0s_l1(struct atl1c_hw *hw); |
| static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup); |
| static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter); |
| static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que, |
| int *work_done, int work_to_do); |
| |
| static const u16 atl1c_pay_load_size[] = { |
| 128, 256, 512, 1024, 2048, 4096, |
| }; |
| |
| static const u16 atl1c_rfd_prod_idx_regs[AT_MAX_RECEIVE_QUEUE] = |
| { |
| REG_MB_RFD0_PROD_IDX, |
| REG_MB_RFD1_PROD_IDX, |
| REG_MB_RFD2_PROD_IDX, |
| REG_MB_RFD3_PROD_IDX |
| }; |
| |
| static const u16 atl1c_rfd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] = |
| { |
| REG_RFD0_HEAD_ADDR_LO, |
| REG_RFD1_HEAD_ADDR_LO, |
| REG_RFD2_HEAD_ADDR_LO, |
| REG_RFD3_HEAD_ADDR_LO |
| }; |
| |
| static const u16 atl1c_rrd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] = |
| { |
| REG_RRD0_HEAD_ADDR_LO, |
| REG_RRD1_HEAD_ADDR_LO, |
| REG_RRD2_HEAD_ADDR_LO, |
| REG_RRD3_HEAD_ADDR_LO |
| }; |
| |
| static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | |
| NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP; |
| |
| /* |
| * atl1c_init_pcie - init PCIE module |
| */ |
| static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag) |
| { |
| u32 data; |
| u32 pci_cmd; |
| struct pci_dev *pdev = hw->adapter->pdev; |
| |
| AT_READ_REG(hw, PCI_COMMAND, &pci_cmd); |
| pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; |
| pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | |
| PCI_COMMAND_IO); |
| AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd); |
| |
| /* |
| * Clear any PowerSaveing Settings |
| */ |
| pci_enable_wake(pdev, PCI_D3hot, 0); |
| pci_enable_wake(pdev, PCI_D3cold, 0); |
| |
| /* |
| * Mask some pcie error bits |
| */ |
| AT_READ_REG(hw, REG_PCIE_UC_SEVERITY, &data); |
| data &= ~PCIE_UC_SERVRITY_DLP; |
| data &= ~PCIE_UC_SERVRITY_FCP; |
| AT_WRITE_REG(hw, REG_PCIE_UC_SEVERITY, data); |
| |
| if (flag & ATL1C_PCIE_L0S_L1_DISABLE) |
| atl1c_disable_l0s_l1(hw); |
| if (flag & ATL1C_PCIE_PHY_RESET) |
| AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT); |
| else |
| AT_WRITE_REG(hw, REG_GPHY_CTRL, |
| GPHY_CTRL_DEFAULT | GPHY_CTRL_EXT_RESET); |
| |
| msleep(1); |
| } |
| |
| /* |
| * atl1c_irq_enable - Enable default interrupt generation settings |
| * @adapter: board private structure |
| */ |
| static inline void atl1c_irq_enable(struct atl1c_adapter *adapter) |
| { |
| if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
| AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF); |
| AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); |
| AT_WRITE_FLUSH(&adapter->hw); |
| } |
| } |
| |
| /* |
| * atl1c_irq_disable - Mask off interrupt generation on the NIC |
| * @adapter: board private structure |
| */ |
| static inline void atl1c_irq_disable(struct atl1c_adapter *adapter) |
| { |
| atomic_inc(&adapter->irq_sem); |
| AT_WRITE_REG(&adapter->hw, REG_IMR, 0); |
| AT_WRITE_FLUSH(&adapter->hw); |
| synchronize_irq(adapter->pdev->irq); |
| } |
| |
| /* |
| * atl1c_irq_reset - reset interrupt confiure on the NIC |
| * @adapter: board private structure |
| */ |
| static inline void atl1c_irq_reset(struct atl1c_adapter *adapter) |
| { |
| atomic_set(&adapter->irq_sem, 1); |
| atl1c_irq_enable(adapter); |
| } |
| |
| /* |
| * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads |
| * of the idle status register until the device is actually idle |
| */ |
| static u32 atl1c_wait_until_idle(struct atl1c_hw *hw) |
| { |
| int timeout; |
| u32 data; |
| |
| for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { |
| AT_READ_REG(hw, REG_IDLE_STATUS, &data); |
| if ((data & IDLE_STATUS_MASK) == 0) |
| return 0; |
| msleep(1); |
| } |
| return data; |
| } |
| |
| /* |
| * atl1c_phy_config - Timer Call-back |
| * @data: pointer to netdev cast into an unsigned long |
| */ |
| static void atl1c_phy_config(unsigned long data) |
| { |
| struct atl1c_adapter *adapter = (struct atl1c_adapter *) data; |
| struct atl1c_hw *hw = &adapter->hw; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&adapter->mdio_lock, flags); |
| atl1c_restart_autoneg(hw); |
| spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| } |
| |
| void atl1c_reinit_locked(struct atl1c_adapter *adapter) |
| { |
| |
| WARN_ON(in_interrupt()); |
| atl1c_down(adapter); |
| atl1c_up(adapter); |
| clear_bit(__AT_RESETTING, &adapter->flags); |
| } |
| |
| static void atl1c_reset_task(struct work_struct *work) |
| { |
| struct atl1c_adapter *adapter; |
| struct net_device *netdev; |
| |
| adapter = container_of(work, struct atl1c_adapter, reset_task); |
| netdev = adapter->netdev; |
| |
| netif_device_detach(netdev); |
| atl1c_down(adapter); |
| atl1c_up(adapter); |
| netif_device_attach(netdev); |
| } |
| |
| static void atl1c_check_link_status(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| struct net_device *netdev = adapter->netdev; |
| struct pci_dev *pdev = adapter->pdev; |
| int err; |
| unsigned long flags; |
| u16 speed, duplex, phy_data; |
| |
| spin_lock_irqsave(&adapter->mdio_lock, flags); |
| /* MII_BMSR must read twise */ |
| atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); |
| atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); |
| spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| |
| if ((phy_data & BMSR_LSTATUS) == 0) { |
| /* link down */ |
| if (netif_carrier_ok(netdev)) { |
| hw->hibernate = true; |
| if (atl1c_stop_mac(hw) != 0) |
| if (netif_msg_hw(adapter)) |
| dev_warn(&pdev->dev, |
| "stop mac failed\n"); |
| atl1c_set_aspm(hw, false); |
| } |
| netif_carrier_off(netdev); |
| } else { |
| /* Link Up */ |
| hw->hibernate = false; |
| spin_lock_irqsave(&adapter->mdio_lock, flags); |
| err = atl1c_get_speed_and_duplex(hw, &speed, &duplex); |
| spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| if (unlikely(err)) |
| return; |
| /* link result is our setting */ |
| if (adapter->link_speed != speed || |
| adapter->link_duplex != duplex) { |
| adapter->link_speed = speed; |
| adapter->link_duplex = duplex; |
| atl1c_set_aspm(hw, true); |
| atl1c_enable_tx_ctrl(hw); |
| atl1c_enable_rx_ctrl(hw); |
| atl1c_setup_mac_ctrl(adapter); |
| if (netif_msg_link(adapter)) |
| dev_info(&pdev->dev, |
| "%s: %s NIC Link is Up<%d Mbps %s>\n", |
| atl1c_driver_name, netdev->name, |
| adapter->link_speed, |
| adapter->link_duplex == FULL_DUPLEX ? |
| "Full Duplex" : "Half Duplex"); |
| } |
| if (!netif_carrier_ok(netdev)) |
| netif_carrier_on(netdev); |
| } |
| } |
| |
| /* |
| * atl1c_link_chg_task - deal with link change event Out of interrupt context |
| * @netdev: network interface device structure |
| */ |
| static void atl1c_link_chg_task(struct work_struct *work) |
| { |
| struct atl1c_adapter *adapter; |
| |
| adapter = container_of(work, struct atl1c_adapter, link_chg_task); |
| atl1c_check_link_status(adapter); |
| } |
| |
| static void atl1c_link_chg_event(struct atl1c_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct pci_dev *pdev = adapter->pdev; |
| u16 phy_data; |
| u16 link_up; |
| |
| spin_lock(&adapter->mdio_lock); |
| atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); |
| atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); |
| spin_unlock(&adapter->mdio_lock); |
| link_up = phy_data & BMSR_LSTATUS; |
| /* notify upper layer link down ASAP */ |
| if (!link_up) { |
| if (netif_carrier_ok(netdev)) { |
| /* old link state: Up */ |
| netif_carrier_off(netdev); |
| if (netif_msg_link(adapter)) |
| dev_info(&pdev->dev, |
| "%s: %s NIC Link is Down\n", |
| atl1c_driver_name, netdev->name); |
| adapter->link_speed = SPEED_0; |
| } |
| } |
| schedule_work(&adapter->link_chg_task); |
| } |
| |
| static void atl1c_del_timer(struct atl1c_adapter *adapter) |
| { |
| del_timer_sync(&adapter->phy_config_timer); |
| } |
| |
| static void atl1c_cancel_work(struct atl1c_adapter *adapter) |
| { |
| cancel_work_sync(&adapter->reset_task); |
| cancel_work_sync(&adapter->link_chg_task); |
| } |
| |
| /* |
| * atl1c_tx_timeout - Respond to a Tx Hang |
| * @netdev: network interface device structure |
| */ |
| static void atl1c_tx_timeout(struct net_device *netdev) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| /* Do the reset outside of interrupt context */ |
| schedule_work(&adapter->reset_task); |
| } |
| |
| /* |
| * atl1c_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 atl1c_set_multi(struct net_device *netdev) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| struct atl1c_hw *hw = &adapter->hw; |
| struct dev_mc_list *mc_ptr; |
| u32 mac_ctrl_data; |
| u32 hash_value; |
| |
| /* Check for Promiscuous and All Multicast modes */ |
| AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); |
| |
| if (netdev->flags & IFF_PROMISC) { |
| mac_ctrl_data |= MAC_CTRL_PROMIS_EN; |
| } else if (netdev->flags & IFF_ALLMULTI) { |
| mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; |
| mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; |
| } else { |
| mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); |
| } |
| |
| AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); |
| |
| /* clear the old settings from the multicast hash table */ |
| AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); |
| AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); |
| |
| /* comoute 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 = atl1c_hash_mc_addr(hw, mc_ptr->dmi_addr); |
| atl1c_hash_set(hw, hash_value); |
| } |
| } |
| |
| static void atl1c_vlan_rx_register(struct net_device *netdev, |
| struct vlan_group *grp) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| struct pci_dev *pdev = adapter->pdev; |
| u32 mac_ctrl_data = 0; |
| |
| if (netif_msg_pktdata(adapter)) |
| dev_dbg(&pdev->dev, "atl1c_vlan_rx_register\n"); |
| |
| atl1c_irq_disable(adapter); |
| |
| adapter->vlgrp = grp; |
| AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data); |
| |
| if (grp) { |
| /* enable VLAN tag insert/strip */ |
| mac_ctrl_data |= MAC_CTRL_RMV_VLAN; |
| } else { |
| /* disable VLAN tag insert/strip */ |
| mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; |
| } |
| |
| AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); |
| atl1c_irq_enable(adapter); |
| } |
| |
| static void atl1c_restore_vlan(struct atl1c_adapter *adapter) |
| { |
| struct pci_dev *pdev = adapter->pdev; |
| |
| if (netif_msg_pktdata(adapter)) |
| dev_dbg(&pdev->dev, "atl1c_restore_vlan !"); |
| atl1c_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| } |
| /* |
| * atl1c_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 atl1c_set_mac_addr(struct net_device *netdev, void *p) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| struct sockaddr *addr = p; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| if (netif_running(netdev)) |
| return -EBUSY; |
| |
| memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
| memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); |
| |
| atl1c_hw_set_mac_addr(&adapter->hw); |
| |
| return 0; |
| } |
| |
| static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, |
| struct net_device *dev) |
| { |
| int mtu = dev->mtu; |
| |
| adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ? |
| roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE; |
| } |
| /* |
| * atl1c_change_mtu - Change the Maximum Transfer Unit |
| * @netdev: network interface device structure |
| * @new_mtu: new value for maximum frame size |
| * |
| * Returns 0 on success, negative on failure |
| */ |
| static int atl1c_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| int old_mtu = netdev->mtu; |
| int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
| |
| if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || |
| (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
| if (netif_msg_link(adapter)) |
| dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); |
| return -EINVAL; |
| } |
| /* set MTU */ |
| if (old_mtu != new_mtu && netif_running(netdev)) { |
| while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) |
| msleep(1); |
| netdev->mtu = new_mtu; |
| adapter->hw.max_frame_size = new_mtu; |
| atl1c_set_rxbufsize(adapter, netdev); |
| atl1c_down(adapter); |
| atl1c_up(adapter); |
| clear_bit(__AT_RESETTING, &adapter->flags); |
| if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) { |
| u32 phy_data; |
| |
| AT_READ_REG(&adapter->hw, 0x1414, &phy_data); |
| phy_data |= 0x10000000; |
| AT_WRITE_REG(&adapter->hw, 0x1414, phy_data); |
| } |
| |
| } |
| return 0; |
| } |
| |
| /* |
| * caller should hold mdio_lock |
| */ |
| static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| u16 result; |
| |
| atl1c_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); |
| return result; |
| } |
| |
| static void atl1c_mdio_write(struct net_device *netdev, int phy_id, |
| int reg_num, int val) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| atl1c_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val); |
| } |
| |
| /* |
| * atl1c_mii_ioctl - |
| * @netdev: |
| * @ifreq: |
| * @cmd: |
| */ |
| static int atl1c_mii_ioctl(struct net_device *netdev, |
| struct ifreq *ifr, int cmd) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| struct pci_dev *pdev = adapter->pdev; |
| struct mii_ioctl_data *data = if_mii(ifr); |
| unsigned long flags; |
| int retval = 0; |
| |
| if (!netif_running(netdev)) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&adapter->mdio_lock, flags); |
| switch (cmd) { |
| case SIOCGMIIPHY: |
| data->phy_id = 0; |
| break; |
| |
| case SIOCGMIIREG: |
| if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
| &data->val_out)) { |
| retval = -EIO; |
| goto out; |
| } |
| break; |
| |
| case SIOCSMIIREG: |
| if (data->reg_num & ~(0x1F)) { |
| retval = -EFAULT; |
| goto out; |
| } |
| |
| dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x", |
| data->reg_num, data->val_in); |
| if (atl1c_write_phy_reg(&adapter->hw, |
| data->reg_num, data->val_in)) { |
| retval = -EIO; |
| goto out; |
| } |
| break; |
| |
| default: |
| retval = -EOPNOTSUPP; |
| break; |
| } |
| out: |
| spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| return retval; |
| } |
| |
| /* |
| * atl1c_ioctl - |
| * @netdev: |
| * @ifreq: |
| * @cmd: |
| */ |
| static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| { |
| switch (cmd) { |
| case SIOCGMIIPHY: |
| case SIOCGMIIREG: |
| case SIOCSMIIREG: |
| return atl1c_mii_ioctl(netdev, ifr, cmd); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| /* |
| * atl1c_alloc_queues - Allocate memory for all rings |
| * @adapter: board private structure to initialize |
| * |
| */ |
| static int __devinit atl1c_alloc_queues(struct atl1c_adapter *adapter) |
| { |
| return 0; |
| } |
| |
| static void atl1c_set_mac_type(struct atl1c_hw *hw) |
| { |
| switch (hw->device_id) { |
| case PCI_DEVICE_ID_ATTANSIC_L2C: |
| hw->nic_type = athr_l2c; |
| break; |
| |
| case PCI_DEVICE_ID_ATTANSIC_L1C: |
| hw->nic_type = athr_l1c; |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static int atl1c_setup_mac_funcs(struct atl1c_hw *hw) |
| { |
| u32 phy_status_data; |
| u32 link_ctrl_data; |
| |
| atl1c_set_mac_type(hw); |
| AT_READ_REG(hw, REG_PHY_STATUS, &phy_status_data); |
| AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); |
| |
| hw->ctrl_flags = ATL1C_INTR_CLEAR_ON_READ | |
| ATL1C_INTR_MODRT_ENABLE | |
| ATL1C_RX_IPV6_CHKSUM | |
| ATL1C_TXQ_MODE_ENHANCE; |
| if (link_ctrl_data & LINK_CTRL_L0S_EN) |
| hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT; |
| if (link_ctrl_data & LINK_CTRL_L1_EN) |
| hw->ctrl_flags |= ATL1C_ASPM_L1_SUPPORT; |
| |
| if (hw->nic_type == athr_l1c) { |
| hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; |
| hw->ctrl_flags |= ATL1C_LINK_CAP_1000M; |
| } |
| return 0; |
| } |
| /* |
| * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) |
| * @adapter: board private structure to initialize |
| * |
| * atl1c_sw_init initializes the Adapter private data structure. |
| * Fields are initialized based on PCI device information and |
| * OS network device settings (MTU size). |
| */ |
| static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| struct pci_dev *pdev = adapter->pdev; |
| |
| adapter->wol = 0; |
| adapter->link_speed = SPEED_0; |
| adapter->link_duplex = FULL_DUPLEX; |
| adapter->num_rx_queues = AT_DEF_RECEIVE_QUEUE; |
| adapter->tpd_ring[0].count = 1024; |
| adapter->rfd_ring[0].count = 512; |
| |
| hw->vendor_id = pdev->vendor; |
| hw->device_id = pdev->device; |
| hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| hw->subsystem_id = pdev->subsystem_device; |
| |
| /* before link up, we assume hibernate is true */ |
| hw->hibernate = true; |
| hw->media_type = MEDIA_TYPE_AUTO_SENSOR; |
| if (atl1c_setup_mac_funcs(hw) != 0) { |
| dev_err(&pdev->dev, "set mac function pointers failed\n"); |
| return -1; |
| } |
| hw->intr_mask = IMR_NORMAL_MASK; |
| hw->phy_configured = false; |
| hw->preamble_len = 7; |
| hw->max_frame_size = adapter->netdev->mtu; |
| if (adapter->num_rx_queues < 2) { |
| hw->rss_type = atl1c_rss_disable; |
| hw->rss_mode = atl1c_rss_mode_disable; |
| } else { |
| hw->rss_type = atl1c_rss_ipv4; |
| hw->rss_mode = atl1c_rss_mul_que_mul_int; |
| hw->rss_hash_bits = 16; |
| } |
| hw->autoneg_advertised = ADVERTISED_Autoneg; |
| hw->indirect_tab = 0xE4E4E4E4; |
| hw->base_cpu = 0; |
| |
| hw->ict = 50000; /* 100ms */ |
| hw->smb_timer = 200000; /* 400ms */ |
| hw->cmb_tpd = 4; |
| hw->cmb_tx_timer = 1; /* 2 us */ |
| hw->rx_imt = 200; |
| hw->tx_imt = 1000; |
| |
| hw->tpd_burst = 5; |
| hw->rfd_burst = 8; |
| hw->dma_order = atl1c_dma_ord_out; |
| hw->dmar_block = atl1c_dma_req_1024; |
| hw->dmaw_block = atl1c_dma_req_1024; |
| hw->dmar_dly_cnt = 15; |
| hw->dmaw_dly_cnt = 4; |
| |
| if (atl1c_alloc_queues(adapter)) { |
| dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| return -ENOMEM; |
| } |
| /* TODO */ |
| atl1c_set_rxbufsize(adapter, adapter->netdev); |
| atomic_set(&adapter->irq_sem, 1); |
| spin_lock_init(&adapter->mdio_lock); |
| spin_lock_init(&adapter->tx_lock); |
| set_bit(__AT_DOWN, &adapter->flags); |
| |
| return 0; |
| } |
| |
| /* |
| * atl1c_clean_tx_ring - Free Tx-skb |
| * @adapter: board private structure |
| */ |
| static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, |
| enum atl1c_trans_queue type) |
| { |
| struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| struct atl1c_buffer *buffer_info; |
| struct pci_dev *pdev = adapter->pdev; |
| u16 index, ring_count; |
| |
| ring_count = tpd_ring->count; |
| for (index = 0; index < ring_count; index++) { |
| buffer_info = &tpd_ring->buffer_info[index]; |
| if (buffer_info->state == ATL1_BUFFER_FREE) |
| continue; |
| if (buffer_info->dma) |
| pci_unmap_single(pdev, buffer_info->dma, |
| buffer_info->length, |
| PCI_DMA_TODEVICE); |
| if (buffer_info->skb) |
| dev_kfree_skb(buffer_info->skb); |
| buffer_info->dma = 0; |
| buffer_info->skb = NULL; |
| buffer_info->state = ATL1_BUFFER_FREE; |
| } |
| |
| /* Zero out Tx-buffers */ |
| memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * |
| ring_count); |
| atomic_set(&tpd_ring->next_to_clean, 0); |
| tpd_ring->next_to_use = 0; |
| } |
| |
| /* |
| * atl1c_clean_rx_ring - Free rx-reservation skbs |
| * @adapter: board private structure |
| */ |
| static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; |
| struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; |
| struct atl1c_buffer *buffer_info; |
| struct pci_dev *pdev = adapter->pdev; |
| int i, j; |
| |
| for (i = 0; i < adapter->num_rx_queues; i++) { |
| for (j = 0; j < rfd_ring[i].count; j++) { |
| buffer_info = &rfd_ring[i].buffer_info[j]; |
| if (buffer_info->state == ATL1_BUFFER_FREE) |
| continue; |
| if (buffer_info->dma) |
| pci_unmap_single(pdev, buffer_info->dma, |
| buffer_info->length, |
| PCI_DMA_FROMDEVICE); |
| if (buffer_info->skb) |
| dev_kfree_skb(buffer_info->skb); |
| buffer_info->state = ATL1_BUFFER_FREE; |
| buffer_info->skb = NULL; |
| } |
| /* zero out the descriptor ring */ |
| memset(rfd_ring[i].desc, 0, rfd_ring[i].size); |
| rfd_ring[i].next_to_clean = 0; |
| rfd_ring[i].next_to_use = 0; |
| rrd_ring[i].next_to_use = 0; |
| rrd_ring[i].next_to_clean = 0; |
| } |
| } |
| |
| /* |
| * Read / Write Ptr Initialize: |
| */ |
| static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; |
| struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; |
| struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; |
| struct atl1c_buffer *buffer_info; |
| int i, j; |
| |
| for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { |
| tpd_ring[i].next_to_use = 0; |
| atomic_set(&tpd_ring[i].next_to_clean, 0); |
| buffer_info = tpd_ring[i].buffer_info; |
| for (j = 0; j < tpd_ring->count; j++) |
| buffer_info[i].state = ATL1_BUFFER_FREE; |
| } |
| for (i = 0; i < adapter->num_rx_queues; i++) { |
| rfd_ring[i].next_to_use = 0; |
| rfd_ring[i].next_to_clean = 0; |
| rrd_ring[i].next_to_use = 0; |
| rrd_ring[i].next_to_clean = 0; |
| for (j = 0; j < rfd_ring[i].count; j++) { |
| buffer_info = &rfd_ring[i].buffer_info[j]; |
| buffer_info->state = ATL1_BUFFER_FREE; |
| } |
| } |
| } |
| |
| /* |
| * atl1c_free_ring_resources - Free Tx / RX descriptor Resources |
| * @adapter: board private structure |
| * |
| * Free all transmit software resources |
| */ |
| static void atl1c_free_ring_resources(struct atl1c_adapter *adapter) |
| { |
| struct pci_dev *pdev = adapter->pdev; |
| |
| pci_free_consistent(pdev, adapter->ring_header.size, |
| adapter->ring_header.desc, |
| adapter->ring_header.dma); |
| adapter->ring_header.desc = NULL; |
| |
| /* Note: just free tdp_ring.buffer_info, |
| * it contain rfd_ring.buffer_info, do not double free */ |
| if (adapter->tpd_ring[0].buffer_info) { |
| kfree(adapter->tpd_ring[0].buffer_info); |
| adapter->tpd_ring[0].buffer_info = NULL; |
| } |
| } |
| |
| /* |
| * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources |
| * @adapter: board private structure |
| * |
| * Return 0 on success, negative on failure |
| */ |
| static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter) |
| { |
| struct pci_dev *pdev = adapter->pdev; |
| struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; |
| struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; |
| struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; |
| struct atl1c_ring_header *ring_header = &adapter->ring_header; |
| int num_rx_queues = adapter->num_rx_queues; |
| int size; |
| int i; |
| int count = 0; |
| int rx_desc_count = 0; |
| u32 offset = 0; |
| |
| rrd_ring[0].count = rfd_ring[0].count; |
| for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++) |
| tpd_ring[i].count = tpd_ring[0].count; |
| |
| for (i = 1; i < adapter->num_rx_queues; i++) |
| rfd_ring[i].count = rrd_ring[i].count = rfd_ring[0].count; |
| |
| /* 2 tpd queue, one high priority queue, |
| * another normal priority queue */ |
| size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 + |
| rfd_ring->count * num_rx_queues); |
| tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); |
| if (unlikely(!tpd_ring->buffer_info)) { |
| dev_err(&pdev->dev, "kzalloc failed, size = %d\n", |
| size); |
| goto err_nomem; |
| } |
| for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { |
| tpd_ring[i].buffer_info = |
| (struct atl1c_buffer *) (tpd_ring->buffer_info + count); |
| count += tpd_ring[i].count; |
| } |
| |
| for (i = 0; i < num_rx_queues; i++) { |
| rfd_ring[i].buffer_info = |
| (struct atl1c_buffer *) (tpd_ring->buffer_info + count); |
| count += rfd_ring[i].count; |
| rx_desc_count += rfd_ring[i].count; |
| } |
| /* |
| * real ring DMA buffer |
| * each ring/block may need up to 8 bytes for alignment, hence the |
| * additional bytes tacked onto the end. |
| */ |
| ring_header->size = size = |
| sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 + |
| sizeof(struct atl1c_rx_free_desc) * rx_desc_count + |
| sizeof(struct atl1c_recv_ret_status) * rx_desc_count + |
| sizeof(struct atl1c_hw_stats) + |
| 8 * 4 + 8 * 2 * num_rx_queues; |
| |
| ring_header->desc = pci_alloc_consistent(pdev, ring_header->size, |
| &ring_header->dma); |
| if (unlikely(!ring_header->desc)) { |
| dev_err(&pdev->dev, "pci_alloc_consistend failed\n"); |
| goto err_nomem; |
| } |
| memset(ring_header->desc, 0, ring_header->size); |
| /* init TPD ring */ |
| |
| tpd_ring[0].dma = roundup(ring_header->dma, 8); |
| offset = tpd_ring[0].dma - ring_header->dma; |
| for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { |
| tpd_ring[i].dma = ring_header->dma + offset; |
| tpd_ring[i].desc = (u8 *) ring_header->desc + offset; |
| tpd_ring[i].size = |
| sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count; |
| offset += roundup(tpd_ring[i].size, 8); |
| } |
| /* init RFD ring */ |
| for (i = 0; i < num_rx_queues; i++) { |
| rfd_ring[i].dma = ring_header->dma + offset; |
| rfd_ring[i].desc = (u8 *) ring_header->desc + offset; |
| rfd_ring[i].size = sizeof(struct atl1c_rx_free_desc) * |
| rfd_ring[i].count; |
| offset += roundup(rfd_ring[i].size, 8); |
| } |
| |
| /* init RRD ring */ |
| for (i = 0; i < num_rx_queues; i++) { |
| rrd_ring[i].dma = ring_header->dma + offset; |
| rrd_ring[i].desc = (u8 *) ring_header->desc + offset; |
| rrd_ring[i].size = sizeof(struct atl1c_recv_ret_status) * |
| rrd_ring[i].count; |
| offset += roundup(rrd_ring[i].size, 8); |
| } |
| |
| adapter->smb.dma = ring_header->dma + offset; |
| adapter->smb.smb = (u8 *)ring_header->desc + offset; |
| return 0; |
| |
| err_nomem: |
| kfree(tpd_ring->buffer_info); |
| return -ENOMEM; |
| } |
| |
| static void atl1c_configure_des_ring(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| struct atl1c_rfd_ring *rfd_ring = (struct atl1c_rfd_ring *) |
| adapter->rfd_ring; |
| struct atl1c_rrd_ring *rrd_ring = (struct atl1c_rrd_ring *) |
| adapter->rrd_ring; |
| struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) |
| adapter->tpd_ring; |
| struct atl1c_cmb *cmb = (struct atl1c_cmb *) &adapter->cmb; |
| struct atl1c_smb *smb = (struct atl1c_smb *) &adapter->smb; |
| int i; |
| |
| /* TPD */ |
| AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI, |
| (u32)((tpd_ring[atl1c_trans_normal].dma & |
| AT_DMA_HI_ADDR_MASK) >> 32)); |
| /* just enable normal priority TX queue */ |
| AT_WRITE_REG(hw, REG_NTPD_HEAD_ADDR_LO, |
| (u32)(tpd_ring[atl1c_trans_normal].dma & |
| AT_DMA_LO_ADDR_MASK)); |
| AT_WRITE_REG(hw, REG_HTPD_HEAD_ADDR_LO, |
| (u32)(tpd_ring[atl1c_trans_high].dma & |
| AT_DMA_LO_ADDR_MASK)); |
| AT_WRITE_REG(hw, REG_TPD_RING_SIZE, |
| (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK)); |
| |
| |
| /* RFD */ |
| AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI, |
| (u32)((rfd_ring[0].dma & AT_DMA_HI_ADDR_MASK) >> 32)); |
| for (i = 0; i < adapter->num_rx_queues; i++) |
| AT_WRITE_REG(hw, atl1c_rfd_addr_lo_regs[i], |
| (u32)(rfd_ring[i].dma & AT_DMA_LO_ADDR_MASK)); |
| |
| AT_WRITE_REG(hw, REG_RFD_RING_SIZE, |
| rfd_ring[0].count & RFD_RING_SIZE_MASK); |
| AT_WRITE_REG(hw, REG_RX_BUF_SIZE, |
| adapter->rx_buffer_len & RX_BUF_SIZE_MASK); |
| |
| /* RRD */ |
| for (i = 0; i < adapter->num_rx_queues; i++) |
| AT_WRITE_REG(hw, atl1c_rrd_addr_lo_regs[i], |
| (u32)(rrd_ring[i].dma & AT_DMA_LO_ADDR_MASK)); |
| AT_WRITE_REG(hw, REG_RRD_RING_SIZE, |
| (rrd_ring[0].count & RRD_RING_SIZE_MASK)); |
| |
| /* CMB */ |
| AT_WRITE_REG(hw, REG_CMB_BASE_ADDR_LO, cmb->dma & AT_DMA_LO_ADDR_MASK); |
| |
| /* SMB */ |
| AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_HI, |
| (u32)((smb->dma & AT_DMA_HI_ADDR_MASK) >> 32)); |
| AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_LO, |
| (u32)(smb->dma & AT_DMA_LO_ADDR_MASK)); |
| /* Load all of base address above */ |
| AT_WRITE_REG(hw, REG_LOAD_PTR, 1); |
| } |
| |
| static void atl1c_configure_tx(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| u32 dev_ctrl_data; |
| u32 max_pay_load; |
| u16 tx_offload_thresh; |
| u32 txq_ctrl_data; |
| u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */ |
| |
| extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN; |
| tx_offload_thresh = MAX_TX_OFFLOAD_THRESH; |
| AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH, |
| (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK); |
| AT_READ_REG(hw, REG_DEVICE_CTRL, &dev_ctrl_data); |
| max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT) & |
| DEVICE_CTRL_MAX_PAYLOAD_MASK; |
| hw->dmaw_block = min(max_pay_load, hw->dmaw_block); |
| max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT) & |
| DEVICE_CTRL_MAX_RREQ_SZ_MASK; |
| hw->dmar_block = min(max_pay_load, hw->dmar_block); |
| |
| txq_ctrl_data = (hw->tpd_burst & TXQ_NUM_TPD_BURST_MASK) << |
| TXQ_NUM_TPD_BURST_SHIFT; |
| if (hw->ctrl_flags & ATL1C_TXQ_MODE_ENHANCE) |
| txq_ctrl_data |= TXQ_CTRL_ENH_MODE; |
| txq_ctrl_data |= (atl1c_pay_load_size[hw->dmar_block] & |
| TXQ_TXF_BURST_NUM_MASK) << TXQ_TXF_BURST_NUM_SHIFT; |
| |
| AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data); |
| } |
| |
| static void atl1c_configure_rx(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| u32 rxq_ctrl_data; |
| |
| rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) << |
| RXQ_RFD_BURST_NUM_SHIFT; |
| |
| if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM) |
| rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN; |
| if (hw->rss_type == atl1c_rss_ipv4) |
| rxq_ctrl_data |= RSS_HASH_IPV4; |
| if (hw->rss_type == atl1c_rss_ipv4_tcp) |
| rxq_ctrl_data |= RSS_HASH_IPV4_TCP; |
| if (hw->rss_type == atl1c_rss_ipv6) |
| rxq_ctrl_data |= RSS_HASH_IPV6; |
| if (hw->rss_type == atl1c_rss_ipv6_tcp) |
| rxq_ctrl_data |= RSS_HASH_IPV6_TCP; |
| if (hw->rss_type != atl1c_rss_disable) |
| rxq_ctrl_data |= RRS_HASH_CTRL_EN; |
| |
| rxq_ctrl_data |= (hw->rss_mode & RSS_MODE_MASK) << |
| RSS_MODE_SHIFT; |
| rxq_ctrl_data |= (hw->rss_hash_bits & RSS_HASH_BITS_MASK) << |
| RSS_HASH_BITS_SHIFT; |
| if (hw->ctrl_flags & ATL1C_ASPM_CTRL_MON) |
| rxq_ctrl_data |= (ASPM_THRUPUT_LIMIT_100M & |
| ASPM_THRUPUT_LIMIT_MASK) << ASPM_THRUPUT_LIMIT_SHIFT; |
| |
| AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); |
| } |
| |
| static void atl1c_configure_rss(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| |
| AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); |
| AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); |
| } |
| |
| static void atl1c_configure_dma(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| u32 dma_ctrl_data; |
| |
| dma_ctrl_data = DMA_CTRL_DMAR_REQ_PRI; |
| if (hw->ctrl_flags & ATL1C_CMB_ENABLE) |
| dma_ctrl_data |= DMA_CTRL_CMB_EN; |
| if (hw->ctrl_flags & ATL1C_SMB_ENABLE) |
| dma_ctrl_data |= DMA_CTRL_SMB_EN; |
| else |
| dma_ctrl_data |= MAC_CTRL_SMB_DIS; |
| |
| switch (hw->dma_order) { |
| case atl1c_dma_ord_in: |
| dma_ctrl_data |= DMA_CTRL_DMAR_IN_ORDER; |
| break; |
| case atl1c_dma_ord_enh: |
| dma_ctrl_data |= DMA_CTRL_DMAR_ENH_ORDER; |
| break; |
| case atl1c_dma_ord_out: |
| dma_ctrl_data |= DMA_CTRL_DMAR_OUT_ORDER; |
| break; |
| default: |
| break; |
| } |
| |
| dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) |
| << DMA_CTRL_DMAR_BURST_LEN_SHIFT; |
| dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) |
| << DMA_CTRL_DMAW_BURST_LEN_SHIFT; |
| dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK) |
| << DMA_CTRL_DMAR_DLY_CNT_SHIFT; |
| dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK) |
| << DMA_CTRL_DMAW_DLY_CNT_SHIFT; |
| |
| AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); |
| } |
| |
| /* |
| * Stop the mac, transmit and receive units |
| * hw - Struct containing variables accessed by shared code |
| * return : 0 or idle status (if error) |
| */ |
| static int atl1c_stop_mac(struct atl1c_hw *hw) |
| { |
| u32 data; |
| |
| AT_READ_REG(hw, REG_RXQ_CTRL, &data); |
| data &= ~(RXQ1_CTRL_EN | RXQ2_CTRL_EN | |
| RXQ3_CTRL_EN | RXQ_CTRL_EN); |
| AT_WRITE_REG(hw, REG_RXQ_CTRL, data); |
| |
| AT_READ_REG(hw, REG_TXQ_CTRL, &data); |
| data &= ~TXQ_CTRL_EN; |
| AT_WRITE_REG(hw, REG_TWSI_CTRL, data); |
| |
| atl1c_wait_until_idle(hw); |
| |
| AT_READ_REG(hw, REG_MAC_CTRL, &data); |
| data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); |
| AT_WRITE_REG(hw, REG_MAC_CTRL, data); |
| |
| return (int)atl1c_wait_until_idle(hw); |
| } |
| |
| static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw) |
| { |
| u32 data; |
| |
| AT_READ_REG(hw, REG_RXQ_CTRL, &data); |
| switch (hw->adapter->num_rx_queues) { |
| case 4: |
| data |= (RXQ3_CTRL_EN | RXQ2_CTRL_EN | RXQ1_CTRL_EN); |
| break; |
| case 3: |
| data |= (RXQ2_CTRL_EN | RXQ1_CTRL_EN); |
| break; |
| case 2: |
| data |= RXQ1_CTRL_EN; |
| break; |
| default: |
| break; |
| } |
| data |= RXQ_CTRL_EN; |
| AT_WRITE_REG(hw, REG_RXQ_CTRL, data); |
| } |
| |
| static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw) |
| { |
| u32 data; |
| |
| AT_READ_REG(hw, REG_TXQ_CTRL, &data); |
| data |= TXQ_CTRL_EN; |
| AT_WRITE_REG(hw, REG_TXQ_CTRL, data); |
| } |
| |
| /* |
| * Reset the transmit and receive units; mask and clear all interrupts. |
| * hw - Struct containing variables accessed by shared code |
| * return : 0 or idle status (if error) |
| */ |
| static int atl1c_reset_mac(struct atl1c_hw *hw) |
| { |
| struct atl1c_adapter *adapter = (struct atl1c_adapter *)hw->adapter; |
| struct pci_dev *pdev = adapter->pdev; |
| int ret; |
| |
| AT_WRITE_REG(hw, REG_IMR, 0); |
| AT_WRITE_REG(hw, REG_ISR, ISR_DIS_INT); |
| |
| ret = atl1c_stop_mac(hw); |
| if (ret) |
| return ret; |
| /* |
| * Issue Soft Reset to the MAC. This will reset the chip's |
| * transmit, receive, DMA. It will not effect |
| * the current PCI configuration. The global reset bit is self- |
| * clearing, and should clear within a microsecond. |
| */ |
| AT_WRITE_REGW(hw, REG_MASTER_CTRL, MASTER_CTRL_SOFT_RST); |
| AT_WRITE_FLUSH(hw); |
| msleep(10); |
| /* Wait at least 10ms for All module to be Idle */ |
| |
| if (atl1c_wait_until_idle(hw)) { |
| dev_err(&pdev->dev, |
| "MAC state machine can't be idle since" |
| " disabled for 10ms second\n"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static void atl1c_disable_l0s_l1(struct atl1c_hw *hw) |
| { |
| u32 pm_ctrl_data; |
| |
| AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); |
| pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << |
| PM_CTRL_L1_ENTRY_TIMER_SHIFT); |
| pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1; |
| pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
| pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; |
| pm_ctrl_data &= ~PM_CTRL_MAC_ASPM_CHK; |
| pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1; |
| |
| pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN; |
| pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN; |
| pm_ctrl_data |= PM_CTRL_SERDES_L1_EN; |
| AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); |
| } |
| |
| /* |
| * Set ASPM state. |
| * Enable/disable L0s/L1 depend on link state. |
| */ |
| static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup) |
| { |
| u32 pm_ctrl_data; |
| |
| AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); |
| |
| pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1; |
| pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << |
| PM_CTRL_L1_ENTRY_TIMER_SHIFT); |
| |
| pm_ctrl_data |= PM_CTRL_MAC_ASPM_CHK; |
| |
| if (linkup) { |
| pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN; |
| pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1; |
| |
| pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN; |
| pm_ctrl_data |= PM_CTRL_SERDES_L1_EN; |
| } else { |
| pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN; |
| pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN; |
| pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
| pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN; |
| |
| pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; |
| |
| if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) |
| pm_ctrl_data |= PM_CTRL_ASPM_L1_EN; |
| else |
| pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; |
| } |
| |
| AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); |
| } |
| |
| static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| struct net_device *netdev = adapter->netdev; |
| u32 mac_ctrl_data; |
| |
| mac_ctrl_data = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN; |
| mac_ctrl_data |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); |
| |
| if (adapter->link_duplex == FULL_DUPLEX) { |
| hw->mac_duplex = true; |
| mac_ctrl_data |= MAC_CTRL_DUPLX; |
| } |
| |
| if (adapter->link_speed == SPEED_1000) |
| hw->mac_speed = atl1c_mac_speed_1000; |
| else |
| hw->mac_speed = atl1c_mac_speed_10_100; |
| |
| mac_ctrl_data |= (hw->mac_speed & MAC_CTRL_SPEED_MASK) << |
| MAC_CTRL_SPEED_SHIFT; |
| |
| mac_ctrl_data |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); |
| mac_ctrl_data |= ((hw->preamble_len & MAC_CTRL_PRMLEN_MASK) << |
| MAC_CTRL_PRMLEN_SHIFT); |
| |
| if (adapter->vlgrp) |
| mac_ctrl_data |= MAC_CTRL_RMV_VLAN; |
| |
| mac_ctrl_data |= MAC_CTRL_BC_EN; |
| if (netdev->flags & IFF_PROMISC) |
| mac_ctrl_data |= MAC_CTRL_PROMIS_EN; |
| if (netdev->flags & IFF_ALLMULTI) |
| mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; |
| |
| mac_ctrl_data |= MAC_CTRL_SINGLE_PAUSE_EN; |
| AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); |
| } |
| |
| /* |
| * atl1c_configure - Configure Transmit&Receive Unit after Reset |
| * @adapter: board private structure |
| * |
| * Configure the Tx /Rx unit of the MAC after a reset. |
| */ |
| static int atl1c_configure(struct atl1c_adapter *adapter) |
| { |
| struct atl1c_hw *hw = &adapter->hw; |
| u32 master_ctrl_data = 0; |
| u32 intr_modrt_data; |
| |
| /* clear interrupt status */ |
| AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF); |
| /* Clear any WOL status */ |
| AT_WRITE_REG(hw, REG_WOL_CTRL, 0); |
| /* set Interrupt Clear Timer |
| * HW will enable self to assert interrupt event to system after |
| * waiting x-time for software to notify it accept interrupt. |
| */ |
| AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER, |
| hw->ict & INT_RETRIG_TIMER_MASK); |
| |
| atl1c_configure_des_ring(adapter); |
| |
| if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) { |
| intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) << |
| IRQ_MODRT_TX_TIMER_SHIFT; |
| intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) << |
| IRQ_MODRT_RX_TIMER_SHIFT; |
| AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data); |
| master_ctrl_data |= |
| MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN; |
| } |
| |
| if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ) |
| master_ctrl_data |= MASTER_CTRL_INT_RDCLR; |
| |
| AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
| |
| if (hw->ctrl_flags & ATL1C_CMB_ENABLE) { |
| AT_WRITE_REG(hw, REG_CMB_TPD_THRESH, |
| hw->cmb_tpd & CMB_TPD_THRESH_MASK); |
| AT_WRITE_REG(hw, REG_CMB_TX_TIMER, |
| hw->cmb_tx_timer & CMB_TX_TIMER_MASK); |
| } |
| |
| if (hw->ctrl_flags & ATL1C_SMB_ENABLE) |
| AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, |
| hw->smb_timer & SMB_STAT_TIMER_MASK); |
| /* set MTU */ |
| AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + |
| VLAN_HLEN + ETH_FCS_LEN); |
| /* HDS, disable */ |
| AT_WRITE_REG(hw, REG_HDS_CTRL, 0); |
| |
| atl1c_configure_tx(adapter); |
| atl1c_configure_rx(adapter); |
| atl1c_configure_rss(adapter); |
| atl1c_configure_dma(adapter); |
| |
| return 0; |
| } |
| |
| static void atl1c_update_hw_stats(struct atl1c_adapter *adapter) |
| { |
| u16 hw_reg_addr = 0; |
| unsigned long *stats_item = NULL; |
| u32 data; |
| |
| /* update rx status */ |
| hw_reg_addr = REG_MAC_RX_STATUS_BIN; |
| stats_item = &adapter->hw_stats.rx_ok; |
| while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { |
| AT_READ_REG(&adapter->hw, hw_reg_addr, &data); |
| *stats_item += data; |
| stats_item++; |
| hw_reg_addr += 4; |
| } |
| /* update tx status */ |
| hw_reg_addr = REG_MAC_TX_STATUS_BIN; |
| stats_item = &adapter->hw_stats.tx_ok; |
| while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { |
| AT_READ_REG(&adapter->hw, hw_reg_addr, &data); |
| *stats_item += data; |
| stats_item++; |
| hw_reg_addr += 4; |
| } |
| } |
| |
| /* |
| * atl1c_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 *atl1c_get_stats(struct net_device *netdev) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| struct atl1c_hw_stats *hw_stats = &adapter->hw_stats; |
| struct net_device_stats *net_stats = &adapter->net_stats; |
| |
| atl1c_update_hw_stats(adapter); |
| net_stats->rx_packets = hw_stats->rx_ok; |
| net_stats->tx_packets = hw_stats->tx_ok; |
| net_stats->rx_bytes = hw_stats->rx_byte_cnt; |
| net_stats->tx_bytes = hw_stats->tx_byte_cnt; |
| net_stats->multicast = hw_stats->rx_mcast; |
| net_stats->collisions = hw_stats->tx_1_col + |
| hw_stats->tx_2_col * 2 + |
| hw_stats->tx_late_col + hw_stats->tx_abort_col; |
| net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err + |
| hw_stats->rx_len_err + hw_stats->rx_sz_ov + |
| hw_stats->rx_rrd_ov + hw_stats->rx_align_err; |
| net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; |
| net_stats->rx_length_errors = hw_stats->rx_len_err; |
| net_stats->rx_crc_errors = hw_stats->rx_fcs_err; |
| net_stats->rx_frame_errors = hw_stats->rx_align_err; |
| net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; |
| |
| net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; |
| |
| net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col + |
| hw_stats->tx_underrun + hw_stats->tx_trunc; |
| net_stats->tx_fifo_errors = hw_stats->tx_underrun; |
| net_stats->tx_aborted_errors = hw_stats->tx_abort_col; |
| net_stats->tx_window_errors = hw_stats->tx_late_col; |
| |
| return &adapter->net_stats; |
| } |
| |
| static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter) |
| { |
| u16 phy_data; |
| |
| spin_lock(&adapter->mdio_lock); |
| atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data); |
| spin_unlock(&adapter->mdio_lock); |
| } |
| |
| static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, |
| enum atl1c_trans_queue type) |
| { |
| struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) |
| &adapter->tpd_ring[type]; |
| struct atl1c_buffer *buffer_info; |
| u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); |
| u16 hw_next_to_clean; |
| u16 shift; |
| u32 data; |
| |
| if (type == atl1c_trans_high) |
| shift = MB_HTPD_CONS_IDX_SHIFT; |
| else |
| shift = MB_NTPD_CONS_IDX_SHIFT; |
| |
| AT_READ_REG(&adapter->hw, REG_MB_PRIO_CONS_IDX, &data); |
| hw_next_to_clean = (data >> shift) & MB_PRIO_PROD_IDX_MASK; |
| |
| while (next_to_clean != hw_next_to_clean) { |
| buffer_info = &tpd_ring->buffer_info[next_to_clean]; |
| if (buffer_info->state == ATL1_BUFFER_BUSY) { |
| pci_unmap_page(adapter->pdev, buffer_info->dma, |
| buffer_info->length, PCI_DMA_TODEVICE); |
| buffer_info->dma = 0; |
| if (buffer_info->skb) { |
| dev_kfree_skb_irq(buffer_info->skb); |
| buffer_info->skb = NULL; |
| } |
| buffer_info->state = ATL1_BUFFER_FREE; |
| } |
| if (++next_to_clean == tpd_ring->count) |
| next_to_clean = 0; |
| atomic_set(&tpd_ring->next_to_clean, next_to_clean); |
| } |
| |
| if (netif_queue_stopped(adapter->netdev) && |
| netif_carrier_ok(adapter->netdev)) { |
| netif_wake_queue(adapter->netdev); |
| } |
| |
| return true; |
| } |
| |
| /* |
| * atl1c_intr - Interrupt Handler |
| * @irq: interrupt number |
| * @data: pointer to a network interface device structure |
| * @pt_regs: CPU registers structure |
| */ |
| static irqreturn_t atl1c_intr(int irq, void *data) |
| { |
| struct net_device *netdev = data; |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| struct pci_dev *pdev = adapter->pdev; |
| struct atl1c_hw *hw = &adapter->hw; |
| int max_ints = AT_MAX_INT_WORK; |
| int handled = IRQ_NONE; |
| u32 status; |
| u32 reg_data; |
| |
| do { |
| AT_READ_REG(hw, REG_ISR, ®_data); |
| status = reg_data & hw->intr_mask; |
| |
| if (status == 0 || (status & ISR_DIS_INT) != 0) { |
| if (max_ints != AT_MAX_INT_WORK) |
| handled = IRQ_HANDLED; |
| break; |
| } |
| /* link event */ |
| if (status & ISR_GPHY) |
| atl1c_clear_phy_int(adapter); |
| /* Ack ISR */ |
| AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); |
| if (status & ISR_RX_PKT) { |
| if (likely(napi_schedule_prep(&adapter->napi))) { |
| hw->intr_mask &= ~ISR_RX_PKT; |
| AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); |
| __napi_schedule(&adapter->napi); |
| } |
| } |
| if (status & ISR_TX_PKT) |
| atl1c_clean_tx_irq(adapter, atl1c_trans_normal); |
| |
| handled = IRQ_HANDLED; |
| /* check if PCIE PHY Link down */ |
| if (status & ISR_ERROR) { |
| if (netif_msg_hw(adapter)) |
| dev_err(&pdev->dev, |
| "atl1c hardware error (status = 0x%x)\n", |
| status & ISR_ERROR); |
| /* reset MAC */ |
| hw->intr_mask &= ~ISR_ERROR; |
| AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); |
| schedule_work(&adapter->reset_task); |
| break; |
| } |
| |
| if (status & ISR_OVER) |
| if (netif_msg_intr(adapter)) |
| dev_warn(&pdev->dev, |
| "TX/RX over flow (status = 0x%x)\n", |
| status & ISR_OVER); |
| |
| /* link event */ |
| if (status & (ISR_GPHY | ISR_MANUAL)) { |
| adapter->net_stats.tx_carrier_errors++; |
| atl1c_link_chg_event(adapter); |
| break; |
| } |
| |
| } while (--max_ints > 0); |
| /* re-enable Interrupt*/ |
| AT_WRITE_REG(&adapter->hw, REG_ISR, 0); |
| return handled; |
| } |
| |
| static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, |
| struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) |
| { |
| /* |
| * The pid field in RRS in not correct sometimes, so we |
| * cannot figure out if the packet is fragmented or not, |
| * so we tell the KERNEL CHECKSUM_NONE |
| */ |
| skb->ip_summed = CHECKSUM_NONE; |
| } |
| |
| static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, const int ringid) |
| { |
| struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[ringid]; |
| struct pci_dev *pdev = adapter->pdev; |
| struct atl1c_buffer *buffer_info, *next_info; |
| struct sk_buff *skb; |
| void *vir_addr = NULL; |
| u16 num_alloc = 0; |
| u16 rfd_next_to_use, next_next; |
| struct atl1c_rx_free_desc *rfd_desc; |
| |
| next_next = rfd_next_to_use = rfd_ring->next_to_use; |
| if (++next_next == rfd_ring->count) |
| next_next = 0; |
| buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; |
| next_info = &rfd_ring->buffer_info[next_next]; |
| |
| while (next_info->state == ATL1_BUFFER_FREE) { |
| rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use); |
| |
| skb = dev_alloc_skb(adapter->rx_buffer_len); |
| if (unlikely(!skb)) { |
| if (netif_msg_rx_err(adapter)) |
| dev_warn(&pdev->dev, "alloc rx buffer failed\n"); |
| break; |
| } |
| |
| /* |
| * Make buffer alignment 2 beyond a 16 byte boundary |
| * this will result in a 16 byte aligned IP header after |
| * the 14 byte MAC header is removed |
| */ |
| vir_addr = skb->data; |
| buffer_info->state = ATL1_BUFFER_BUSY; |
| buffer_info->skb = skb; |
| buffer_info->length = adapter->rx_buffer_len; |
| buffer_info->dma = pci_map_single(pdev, vir_addr, |
| buffer_info->length, |
| PCI_DMA_FROMDEVICE); |
| rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
| rfd_next_to_use = next_next; |
| if (++next_next == rfd_ring->count) |
| next_next = 0; |
| buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; |
| next_info = &rfd_ring->buffer_info[next_next]; |
| num_alloc++; |
| } |
| |
| if (num_alloc) { |
| /* TODO: update mailbox here */ |
| wmb(); |
| rfd_ring->next_to_use = rfd_next_to_use; |
| AT_WRITE_REG(&adapter->hw, atl1c_rfd_prod_idx_regs[ringid], |
| rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK); |
| } |
| |
| return num_alloc; |
| } |
| |
| static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring, |
| struct atl1c_recv_ret_status *rrs, u16 num) |
| { |
| u16 i; |
| /* the relationship between rrd and rfd is one map one */ |
| for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring, |
| rrd_ring->next_to_clean)) { |
| rrs->word3 &= ~RRS_RXD_UPDATED; |
| if (++rrd_ring->next_to_clean == rrd_ring->count) |
| rrd_ring->next_to_clean = 0; |
| } |
| } |
| |
| static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring, |
| struct atl1c_recv_ret_status *rrs, u16 num) |
| { |
| u16 i; |
| u16 rfd_index; |
| struct atl1c_buffer *buffer_info = rfd_ring->buffer_info; |
| |
| rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & |
| RRS_RX_RFD_INDEX_MASK; |
| for (i = 0; i < num; i++) { |
| buffer_info[rfd_index].skb = NULL; |
| buffer_info[rfd_index].state = ATL1_BUFFER_FREE; |
| if (++rfd_index == rfd_ring->count) |
| rfd_index = 0; |
| } |
| rfd_ring->next_to_clean = rfd_index; |
| } |
| |
| static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que, |
| int *work_done, int work_to_do) |
| { |
| u16 rfd_num, rfd_index; |
| u16 count = 0; |
| u16 length; |
| struct pci_dev *pdev = adapter->pdev; |
| struct net_device *netdev = adapter->netdev; |
| struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[que]; |
| struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring[que]; |
| struct sk_buff *skb; |
| struct atl1c_recv_ret_status *rrs; |
| struct atl1c_buffer *buffer_info; |
| |
| while (1) { |
| if (*work_done >= work_to_do) |
| break; |
| rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean); |
| if (likely(RRS_RXD_IS_VALID(rrs->word3))) { |
| rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) & |
| RRS_RX_RFD_CNT_MASK; |
| if (unlikely(rfd_num != 1)) |
| /* TODO support mul rfd*/ |
| if (netif_msg_rx_err(adapter)) |
| dev_warn(&pdev->dev, |
| "Multi rfd not support yet!\n"); |
| goto rrs_checked; |
| } else { |
| break; |
| } |
| rrs_checked: |
| atl1c_clean_rrd(rrd_ring, rrs, rfd_num); |
| if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) { |
| atl1c_clean_rfd(rfd_ring, rrs, rfd_num); |
| if (netif_msg_rx_err(adapter)) |
| dev_warn(&pdev->dev, |
| "wrong packet! rrs word3 is %x\n", |
| rrs->word3); |
| continue; |
| } |
| |
| length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) & |
| RRS_PKT_SIZE_MASK); |
| /* Good Receive */ |
| if (likely(rfd_num == 1)) { |
| rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & |
| RRS_RX_RFD_INDEX_MASK; |
| buffer_info = &rfd_ring->buffer_info[rfd_index]; |
| pci_unmap_single(pdev, buffer_info->dma, |
| buffer_info->length, PCI_DMA_FROMDEVICE); |
| skb = buffer_info->skb; |
| } else { |
| /* TODO */ |
| if (netif_msg_rx_err(adapter)) |
| dev_warn(&pdev->dev, |
| "Multi rfd not support yet!\n"); |
| break; |
| } |
| atl1c_clean_rfd(rfd_ring, rrs, rfd_num); |
| skb_put(skb, length - ETH_FCS_LEN); |
| skb->protocol = eth_type_trans(skb, netdev); |
| skb->dev = netdev; |
| atl1c_rx_checksum(adapter, skb, rrs); |
| if (unlikely(adapter->vlgrp) && rrs->word3 & RRS_VLAN_INS) { |
| u16 vlan; |
| |
| AT_TAG_TO_VLAN(rrs->vlan_tag, vlan); |
| vlan = le16_to_cpu(vlan); |
| vlan_hwaccel_receive_skb(skb, adapter->vlgrp, vlan); |
| } else |
| netif_receive_skb(skb); |
| |
| (*work_done)++; |
| count++; |
| } |
| if (count) |
| atl1c_alloc_rx_buffer(adapter, que); |
| } |
| |
| /* |
| * atl1c_clean - NAPI Rx polling callback |
| * @adapter: board private structure |
| */ |
| static int atl1c_clean(struct napi_struct *napi, int budget) |
| { |
| struct atl1c_adapter *adapter = |
| container_of(napi, struct atl1c_adapter, napi); |
| int work_done = 0; |
| |
| /* Keep link state information with original netdev */ |
| if (!netif_carrier_ok(adapter->netdev)) |
| goto quit_polling; |
| /* just enable one RXQ */ |
| atl1c_clean_rx_irq(adapter, 0, &work_done, budget); |
| |
| if (work_done < budget) { |
| quit_polling: |
| napi_complete(napi); |
| adapter->hw.intr_mask |= ISR_RX_PKT; |
| AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); |
| } |
| return work_done; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| |
| /* |
| * Polling 'interrupt' - used by things like netconsole to send skbs |
| * without having to re-enable interrupts. It's not called while |
| * the interrupt routine is executing. |
| */ |
| static void atl1c_netpoll(struct net_device *netdev) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| disable_irq(adapter->pdev->irq); |
| atl1c_intr(adapter->pdev->irq, netdev); |
| enable_irq(adapter->pdev->irq); |
| } |
| #endif |
| |
| static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, enum atl1c_trans_queue type) |
| { |
| struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| u16 next_to_use = 0; |
| u16 next_to_clean = 0; |
| |
| next_to_clean = atomic_read(&tpd_ring->next_to_clean); |
| next_to_use = tpd_ring->next_to_use; |
| |
| return (u16)(next_to_clean > next_to_use) ? |
| (next_to_clean - next_to_use - 1) : |
| (tpd_ring->count + next_to_clean - next_to_use - 1); |
| } |
| |
| /* |
| * get next usable tpd |
| * Note: should call atl1c_tdp_avail to make sure |
| * there is enough tpd to use |
| */ |
| static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter, |
| enum atl1c_trans_queue type) |
| { |
| struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| struct atl1c_tpd_desc *tpd_desc; |
| u16 next_to_use = 0; |
| |
| next_to_use = tpd_ring->next_to_use; |
| if (++tpd_ring->next_to_use == tpd_ring->count) |
| tpd_ring->next_to_use = 0; |
| tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use); |
| memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc)); |
| return tpd_desc; |
| } |
| |
| static struct atl1c_buffer * |
| atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd) |
| { |
| struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; |
| |
| return &tpd_ring->buffer_info[tpd - |
| (struct atl1c_tpd_desc *)tpd_ring->desc]; |
| } |
| |
| /* Calculate the transmit packet descript needed*/ |
| static u16 atl1c_cal_tpd_req(const struct sk_buff *skb) |
| { |
| u16 tpd_req; |
| u16 proto_hdr_len = 0; |
| |
| tpd_req = skb_shinfo(skb)->nr_frags + 1; |
| |
| if (skb_is_gso(skb)) { |
| proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
| if (proto_hdr_len < skb_headlen(skb)) |
| tpd_req++; |
| if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) |
| tpd_req++; |
| } |
| return tpd_req; |
| } |
| |
| static int atl1c_tso_csum(struct atl1c_adapter *adapter, |
| struct sk_buff *skb, |
| struct atl1c_tpd_desc **tpd, |
| enum atl1c_trans_queue type) |
| { |
| struct pci_dev *pdev = adapter->pdev; |
| u8 hdr_len; |
| u32 real_len; |
| unsigned short offload_type; |
| int err; |
| |
| if (skb_is_gso(skb)) { |
| if (skb_header_cloned(skb)) { |
| err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| if (unlikely(err)) |
| return -1; |
| } |
| offload_type = skb_shinfo(skb)->gso_type; |
| |
| if (offload_type & SKB_GSO_TCPV4) { |
| real_len = (((unsigned char *)ip_hdr(skb) - skb->data) |
| + ntohs(ip_hdr(skb)->tot_len)); |
| |
| if (real_len < skb->len) |
| pskb_trim(skb, real_len); |
| |
| hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); |
| if (unlikely(skb->len == hdr_len)) { |
| /* only xsum need */ |
| if (netif_msg_tx_queued(adapter)) |
| dev_warn(&pdev->dev, |
| "IPV4 tso with zero data??\n"); |
| goto check_sum; |
| } else { |
| ip_hdr(skb)->check = 0; |
| tcp_hdr(skb)->check = ~csum_tcpudp_magic( |
| ip_hdr(skb)->saddr, |
| ip_hdr(skb)->daddr, |
| 0, IPPROTO_TCP, 0); |
| (*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT; |
| } |
| } |
| |
| if (offload_type & SKB_GSO_TCPV6) { |
| struct atl1c_tpd_ext_desc *etpd = |
| *(struct atl1c_tpd_ext_desc **)(tpd); |
| |
| memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc)); |
| *tpd = atl1c_get_tpd(adapter, type); |
| ipv6_hdr(skb)->payload_len = 0; |
| /* check payload == 0 byte ? */ |
| hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); |
| if (unlikely(skb->len == hdr_len)) { |
| /* only xsum need */ |
| if (netif_msg_tx_queued(adapter)) |
| dev_warn(&pdev->dev, |
| "IPV6 tso with zero data??\n"); |
| goto check_sum; |
| } else |
| tcp_hdr(skb)->check = ~csum_ipv6_magic( |
| &ipv6_hdr(skb)->saddr, |
| &ipv6_hdr(skb)->daddr, |
| 0, IPPROTO_TCP, 0); |
| etpd->word1 |= 1 << TPD_LSO_EN_SHIFT; |
| etpd->word1 |= 1 << TPD_LSO_VER_SHIFT; |
| etpd->pkt_len = cpu_to_le32(skb->len); |
| (*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT; |
| } |
| |
| (*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT; |
| (*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) << |
| TPD_TCPHDR_OFFSET_SHIFT; |
| (*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) << |
| TPD_MSS_SHIFT; |
| return 0; |
| } |
| |
| check_sum: |
| if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
| u8 css, cso; |
| cso = skb_transport_offset(skb); |
| |
| if (unlikely(cso & 0x1)) { |
| if (netif_msg_tx_err(adapter)) |
| dev_err(&adapter->pdev->dev, |
| "payload offset should not an event number\n"); |
| return -1; |
| } else { |
| css = cso + skb->csum_offset; |
| |
| (*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) << |
| TPD_PLOADOFFSET_SHIFT; |
| (*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) << |
| TPD_CCSUM_OFFSET_SHIFT; |
| (*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT; |
| } |
| } |
| return 0; |
| } |
| |
| static void atl1c_tx_map(struct atl1c_adapter *adapter, |
| struct sk_buff *skb, struct atl1c_tpd_desc *tpd, |
| enum atl1c_trans_queue type) |
| { |
| struct atl1c_tpd_desc *use_tpd = NULL; |
| struct atl1c_buffer *buffer_info = NULL; |
| u16 buf_len = skb_headlen(skb); |
| u16 map_len = 0; |
| u16 mapped_len = 0; |
| u16 hdr_len = 0; |
| u16 nr_frags; |
| u16 f; |
| int tso; |
| |
| nr_frags = skb_shinfo(skb)->nr_frags; |
| tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK; |
| if (tso) { |
| /* TSO */ |
| map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
| use_tpd = tpd; |
| |
| buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); |
| buffer_info->length = map_len; |
| buffer_info->dma = pci_map_single(adapter->pdev, |
| skb->data, hdr_len, PCI_DMA_TODEVICE); |
| buffer_info->state = ATL1_BUFFER_BUSY; |
| mapped_len += map_len; |
| use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
| use_tpd->buffer_len = cpu_to_le16(buffer_info->length); |
| } |
| |
| if (mapped_len < buf_len) { |
| /* mapped_len == 0, means we should use the first tpd, |
| which is given by caller */ |
| if (mapped_len == 0) |
| use_tpd = tpd; |
| else { |
| use_tpd = atl1c_get_tpd(adapter, type); |
| memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
| use_tpd = atl1c_get_tpd(adapter, type); |
| memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
| } |
| buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); |
| buffer_info->length = buf_len - mapped_len; |
| buffer_info->dma = |
| pci_map_single(adapter->pdev, skb->data + mapped_len, |
| buffer_info->length, PCI_DMA_TODEVICE); |
| buffer_info->state = ATL1_BUFFER_BUSY; |
| |
| use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
| use_tpd->buffer_len = cpu_to_le16(buffer_info->length); |
| } |
| |
| for (f = 0; f < nr_frags; f++) { |
| struct skb_frag_struct *frag; |
| |
| frag = &skb_shinfo(skb)->frags[f]; |
| |
| use_tpd = atl1c_get_tpd(adapter, type); |
| memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
| |
| buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); |
| buffer_info->length = frag->size; |
| buffer_info->dma = |
| pci_map_page(adapter->pdev, frag->page, |
| frag->page_offset, |
| buffer_info->length, |
| PCI_DMA_TODEVICE); |
| buffer_info->state = ATL1_BUFFER_BUSY; |
| |
| use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
| use_tpd->buffer_len = cpu_to_le16(buffer_info->length); |
| } |
| |
| /* The last tpd */ |
| use_tpd->word1 |= 1 << TPD_EOP_SHIFT; |
| /* The last buffer info contain the skb address, |
| so it will be free after unmap */ |
| buffer_info->skb = skb; |
| } |
| |
| static void atl1c_tx_queue(struct atl1c_adapter *adapter, struct sk_buff *skb, |
| struct atl1c_tpd_desc *tpd, enum atl1c_trans_queue type) |
| { |
| struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| u32 prod_data; |
| |
| AT_READ_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, &prod_data); |
| switch (type) { |
| case atl1c_trans_high: |
| prod_data &= 0xFFFF0000; |
| prod_data |= tpd_ring->next_to_use & 0xFFFF; |
| break; |
| case atl1c_trans_normal: |
| prod_data &= 0x0000FFFF; |
| prod_data |= (tpd_ring->next_to_use & 0xFFFF) << 16; |
| break; |
| default: |
| break; |
| } |
| wmb(); |
| AT_WRITE_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, prod_data); |
| } |
| |
| static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb, |
| struct net_device *netdev) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| unsigned long flags; |
| u16 tpd_req = 1; |
| struct atl1c_tpd_desc *tpd; |
| enum atl1c_trans_queue type = atl1c_trans_normal; |
| |
| if (test_bit(__AT_DOWN, &adapter->flags)) { |
| dev_kfree_skb_any(skb); |
| return NETDEV_TX_OK; |
| } |
| |
| tpd_req = atl1c_cal_tpd_req(skb); |
| if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { |
| if (netif_msg_pktdata(adapter)) |
| dev_info(&adapter->pdev->dev, "tx locked\n"); |
| return NETDEV_TX_LOCKED; |
| } |
| if (skb->mark == 0x01) |
| type = atl1c_trans_high; |
| else |
| type = atl1c_trans_normal; |
| |
| if (atl1c_tpd_avail(adapter, type) < tpd_req) { |
| /* no enough descriptor, just stop queue */ |
| netif_stop_queue(netdev); |
| spin_unlock_irqrestore(&adapter->tx_lock, flags); |
| return NETDEV_TX_BUSY; |
| } |
| |
| tpd = atl1c_get_tpd(adapter, type); |
| |
| /* do TSO and check sum */ |
| if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) { |
| spin_unlock_irqrestore(&adapter->tx_lock, flags); |
| dev_kfree_skb_any(skb); |
| return NETDEV_TX_OK; |
| } |
| |
| if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
| u16 vlan = vlan_tx_tag_get(skb); |
| __le16 tag; |
| |
| vlan = cpu_to_le16(vlan); |
| AT_VLAN_TO_TAG(vlan, tag); |
| tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT; |
| tpd->vlan_tag = tag; |
| } |
| |
| if (skb_network_offset(skb) != ETH_HLEN) |
| tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */ |
| |
| atl1c_tx_map(adapter, skb, tpd, type); |
| atl1c_tx_queue(adapter, skb, tpd, type); |
| |
| spin_unlock_irqrestore(&adapter->tx_lock, flags); |
| return NETDEV_TX_OK; |
| } |
| |
| static void atl1c_free_irq(struct atl1c_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| |
| free_irq(adapter->pdev->irq, netdev); |
| |
| if (adapter->have_msi) |
| pci_disable_msi(adapter->pdev); |
| } |
| |
| static int atl1c_request_irq(struct atl1c_adapter *adapter) |
| { |
| struct pci_dev *pdev = adapter->pdev; |
| struct net_device *netdev = adapter->netdev; |
| int flags = 0; |
| int err = 0; |
| |
| adapter->have_msi = true; |
| err = pci_enable_msi(adapter->pdev); |
| if (err) { |
| if (netif_msg_ifup(adapter)) |
| dev_err(&pdev->dev, |
| "Unable to allocate MSI interrupt Error: %d\n", |
| err); |
| adapter->have_msi = false; |
| } else |
| netdev->irq = pdev->irq; |
| |
| if (!adapter->have_msi) |
| flags |= IRQF_SHARED; |
| err = request_irq(adapter->pdev->irq, &atl1c_intr, flags, |
| netdev->name, netdev); |
| if (err) { |
| if (netif_msg_ifup(adapter)) |
| dev_err(&pdev->dev, |
| "Unable to allocate interrupt Error: %d\n", |
| err); |
| if (adapter->have_msi) |
| pci_disable_msi(adapter->pdev); |
| return err; |
| } |
| if (netif_msg_ifup(adapter)) |
| dev_dbg(&pdev->dev, "atl1c_request_irq OK\n"); |
| return err; |
| } |
| |
| int atl1c_up(struct atl1c_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| int num; |
| int err; |
| int i; |
| |
| netif_carrier_off(netdev); |
| atl1c_init_ring_ptrs(adapter); |
| atl1c_set_multi(netdev); |
| atl1c_restore_vlan(adapter); |
| |
| for (i = 0; i < adapter->num_rx_queues; i++) { |
| num = atl1c_alloc_rx_buffer(adapter, i); |
| if (unlikely(num == 0)) { |
| err = -ENOMEM; |
| goto err_alloc_rx; |
| } |
| } |
| |
| if (atl1c_configure(adapter)) { |
| err = -EIO; |
| goto err_up; |
| } |
| |
| err = atl1c_request_irq(adapter); |
| if (unlikely(err)) |
| goto err_up; |
| |
| clear_bit(__AT_DOWN, &adapter->flags); |
| napi_enable(&adapter->napi); |
| atl1c_irq_enable(adapter); |
| atl1c_check_link_status(adapter); |
| netif_start_queue(netdev); |
| return err; |
| |
| err_up: |
| err_alloc_rx: |
| atl1c_clean_rx_ring(adapter); |
| return err; |
| } |
| |
| void atl1c_down(struct atl1c_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| |
| atl1c_del_timer(adapter); |
| atl1c_cancel_work(adapter); |
| |
| /* signal that we're down so the interrupt handler does not |
| * reschedule our watchdog timer */ |
| set_bit(__AT_DOWN, &adapter->flags); |
| netif_carrier_off(netdev); |
| napi_disable(&adapter->napi); |
| atl1c_irq_disable(adapter); |
| atl1c_free_irq(adapter); |
| AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT); |
| /* reset MAC to disable all RX/TX */ |
| atl1c_reset_mac(&adapter->hw); |
| msleep(1); |
| |
| adapter->link_speed = SPEED_0; |
| adapter->link_duplex = -1; |
| atl1c_clean_tx_ring(adapter, atl1c_trans_normal); |
| atl1c_clean_tx_ring(adapter, atl1c_trans_high); |
| atl1c_clean_rx_ring(adapter); |
| } |
| |
| /* |
| * atl1c_open - Called when a network interface is made active |
| * @netdev: network interface device structure |
| * |
| * Returns 0 on success, negative value on failure |
| * |
| * The open entry point is called when a network interface is made |
| * active by the system (IFF_UP). At this point all resources needed |
| * for transmit and receive operations are allocated, the interrupt |
| * handler is registered with the OS, the watchdog timer is started, |
| * and the stack is notified that the interface is ready. |
| */ |
| static int atl1c_open(struct net_device *netdev) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| int err; |
| |
| /* disallow open during test */ |
| if (test_bit(__AT_TESTING, &adapter->flags)) |
| return -EBUSY; |
| |
| /* allocate rx/tx dma buffer & descriptors */ |
| err = atl1c_setup_ring_resources(adapter); |
| if (unlikely(err)) |
| return err; |
| |
| err = atl1c_up(adapter); |
| if (unlikely(err)) |
| goto err_up; |
| |
| if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) { |
| u32 phy_data; |
| |
| AT_READ_REG(&adapter->hw, REG_MDIO_CTRL, &phy_data); |
| phy_data |= MDIO_AP_EN; |
| AT_WRITE_REG(&adapter->hw, REG_MDIO_CTRL, phy_data); |
| } |
| return 0; |
| |
| err_up: |
| atl1c_free_irq(adapter); |
| atl1c_free_ring_resources(adapter); |
| atl1c_reset_mac(&adapter->hw); |
| return err; |
| } |
| |
| /* |
| * atl1c_close - Disables a network interface |
| * @netdev: network interface device structure |
| * |
| * Returns 0, this is not allowed to fail |
| * |
| * The close entry point is called when an interface is de-activated |
| * by the OS. The hardware is still under the drivers control, but |
| * needs to be disabled. A global MAC reset is issued to stop the |
| * hardware, and all transmit and receive resources are freed. |
| */ |
| static int atl1c_close(struct net_device *netdev) |
| { |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); |
| atl1c_down(adapter); |
| atl1c_free_ring_resources(adapter); |
| return 0; |
| } |
| |
| static int atl1c_suspend(struct pci_dev *pdev, pm_message_t state) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| struct atl1c_hw *hw = &adapter->hw; |
| u32 ctrl; |
| u32 mac_ctrl_data; |
| u32 master_ctrl_data; |
| u32 wol_ctrl_data; |
| u16 mii_bmsr_data; |
| u16 save_autoneg_advertised; |
| u16 mii_intr_status_data; |
| u32 wufc = adapter->wol; |
| u32 i; |
| int retval = 0; |
| |
| if (netif_running(netdev)) { |
| WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); |
| atl1c_down(adapter); |
| } |
| netif_device_detach(netdev); |
| atl1c_disable_l0s_l1(hw); |
| retval = pci_save_state(pdev); |
| if (retval) |
| return retval; |
| if (wufc) { |
| AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); |
| master_ctrl_data &= ~MASTER_CTRL_CLK_SEL_DIS; |
| |
| /* get link status */ |
| atl1c_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); |
| atl1c_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); |
| save_autoneg_advertised = hw->autoneg_advertised; |
| hw->autoneg_advertised = ADVERTISED_10baseT_Half; |
| if (atl1c_restart_autoneg(hw) != 0) |
| if (netif_msg_link(adapter)) |
| dev_warn(&pdev->dev, "phy autoneg failed\n"); |
| hw->phy_configured = false; /* re-init PHY when resume */ |
| hw->autoneg_advertised = save_autoneg_advertised; |
| /* turn on magic packet wol */ |
| if (wufc & AT_WUFC_MAG) |
| wol_ctrl_data = WOL_MAGIC_EN | WOL_MAGIC_PME_EN; |
| |
| if (wufc & AT_WUFC_LNKC) { |
| for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) { |
| msleep(100); |
| atl1c_read_phy_reg(hw, MII_BMSR, |
| (u16 *)&mii_bmsr_data); |
| if (mii_bmsr_data & BMSR_LSTATUS) |
| break; |
| } |
| if ((mii_bmsr_data & BMSR_LSTATUS) == 0) |
| if (netif_msg_link(adapter)) |
| dev_warn(&pdev->dev, |
| "%s: Link may change" |
| "when suspend\n", |
| atl1c_driver_name); |
| wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN; |
| /* only link up can wake up */ |
| if (atl1c_write_phy_reg(hw, MII_IER, IER_LINK_UP) != 0) { |
| if (netif_msg_link(adapter)) |
| dev_err(&pdev->dev, |
| "%s: read write phy " |
| "register failed.\n", |
| atl1c_driver_name); |
| goto wol_dis; |
| } |
| } |
| /* clear phy interrupt */ |
| atl1c_read_phy_reg(hw, MII_ISR, &mii_intr_status_data); |
| /* Config MAC Ctrl register */ |
| mac_ctrl_data = MAC_CTRL_RX_EN; |
| /* set to 10/100M halt duplex */ |
| mac_ctrl_data |= atl1c_mac_speed_10_100 << MAC_CTRL_SPEED_SHIFT; |
| mac_ctrl_data |= (((u32)adapter->hw.preamble_len & |
| MAC_CTRL_PRMLEN_MASK) << |
| MAC_CTRL_PRMLEN_SHIFT); |
| |
| if (adapter->vlgrp) |
| mac_ctrl_data |= MAC_CTRL_RMV_VLAN; |
| |
| /* magic packet maybe Broadcast&multicast&Unicast frame */ |
| if (wufc & AT_WUFC_MAG) |
| mac_ctrl_data |= MAC_CTRL_BC_EN; |
| |
| if (netif_msg_hw(adapter)) |
| dev_dbg(&pdev->dev, |
| "%s: suspend MAC=0x%x\n", |
| atl1c_driver_name, mac_ctrl_data); |
| AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
| AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data); |
| AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); |
| |
| /* pcie patch */ |
| AT_READ_REG(hw, REG_PCIE_PHYMISC, &ctrl); |
| ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; |
| AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); |
| |
| pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); |
| goto suspend_exit; |
| } |
| wol_dis: |
| |
| /* WOL disabled */ |
| AT_WRITE_REG(hw, REG_WOL_CTRL, 0); |
| |
| /* pcie patch */ |
| AT_READ_REG(hw, REG_PCIE_PHYMISC, &ctrl); |
| ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; |
| AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); |
| |
| atl1c_phy_disable(hw); |
| hw->phy_configured = false; /* re-init PHY when resume */ |
| |
| pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); |
| suspend_exit: |
| |
| pci_disable_device(pdev); |
| pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
| |
| return 0; |
| } |
| |
| static int atl1c_resume(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| pci_set_power_state(pdev, PCI_D0); |
| pci_restore_state(pdev); |
| pci_enable_wake(pdev, PCI_D3hot, 0); |
| pci_enable_wake(pdev, PCI_D3cold, 0); |
| |
| AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); |
| |
| atl1c_phy_reset(&adapter->hw); |
| atl1c_reset_mac(&adapter->hw); |
| netif_device_attach(netdev); |
| if (netif_running(netdev)) |
| atl1c_up(adapter); |
| |
| return 0; |
| } |
| |
| static void atl1c_shutdown(struct pci_dev *pdev) |
| { |
| atl1c_suspend(pdev, PMSG_SUSPEND); |
| } |
| |
| static const struct net_device_ops atl1c_netdev_ops = { |
| .ndo_open = atl1c_open, |
| .ndo_stop = atl1c_close, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_start_xmit = atl1c_xmit_frame, |
| .ndo_set_mac_address = atl1c_set_mac_addr, |
| .ndo_set_multicast_list = atl1c_set_multi, |
| .ndo_change_mtu = atl1c_change_mtu, |
| .ndo_do_ioctl = atl1c_ioctl, |
| .ndo_tx_timeout = atl1c_tx_timeout, |
| .ndo_get_stats = atl1c_get_stats, |
| .ndo_vlan_rx_register = atl1c_vlan_rx_register, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = atl1c_netpoll, |
| #endif |
| }; |
| |
| static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev) |
| { |
| SET_NETDEV_DEV(netdev, &pdev->dev); |
| pci_set_drvdata(pdev, netdev); |
| |
| netdev->irq = pdev->irq; |
| netdev->netdev_ops = &atl1c_netdev_ops; |
| netdev->watchdog_timeo = AT_TX_WATCHDOG; |
| atl1c_set_ethtool_ops(netdev); |
| |
| /* TODO: add when ready */ |
| netdev->features = NETIF_F_SG | |
| NETIF_F_HW_CSUM | |
| NETIF_F_HW_VLAN_TX | |
| NETIF_F_HW_VLAN_RX | |
| NETIF_F_TSO | |
| NETIF_F_TSO6; |
| return 0; |
| } |
| |
| /* |
| * atl1c_probe - Device Initialization Routine |
| * @pdev: PCI device information struct |
| * @ent: entry in atl1c_pci_tbl |
| * |
| * Returns 0 on success, negative on failure |
| * |
| * atl1c_probe initializes an adapter identified by a pci_dev structure. |
| * The OS initialization, configuring of the adapter private structure, |
| * and a hardware reset occur. |
| */ |
| static int __devinit atl1c_probe(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| struct net_device *netdev; |
| struct atl1c_adapter *adapter; |
| static int cards_found; |
| |
| int err = 0; |
| |
| /* enable device (incl. PCI PM wakeup and hotplug setup) */ |
| err = pci_enable_device_mem(pdev); |
| if (err) { |
| dev_err(&pdev->dev, "cannot enable PCI device\n"); |
| return err; |
| } |
| |
| /* |
| * The atl1c chip can DMA to 64-bit addresses, but it uses a single |
| * shared register for the high 32 bits, so only a single, aligned, |
| * 4 GB physical address range can be used at a time. |
| * |
| * Supporting 64-bit DMA on this hardware is more trouble than it's |
| * worth. It is far easier to limit to 32-bit DMA than update |
| * various kernel subsystems to support the mechanics required by a |
| * fixed-high-32-bit system. |
| */ |
| if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
| (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { |
| dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
| goto err_dma; |
| } |
| |
| err = pci_request_regions(pdev, atl1c_driver_name); |
| if (err) { |
| dev_err(&pdev->dev, "cannot obtain PCI resources\n"); |
| goto err_pci_reg; |
| } |
| |
| pci_set_master(pdev); |
| |
| netdev = alloc_etherdev(sizeof(struct atl1c_adapter)); |
| if (netdev == NULL) { |
| err = -ENOMEM; |
| dev_err(&pdev->dev, "etherdev alloc failed\n"); |
| goto err_alloc_etherdev; |
| } |
| |
| err = atl1c_init_netdev(netdev, pdev); |
| if (err) { |
| dev_err(&pdev->dev, "init netdevice failed\n"); |
| goto err_init_netdev; |
| } |
| adapter = netdev_priv(netdev); |
| adapter->bd_number = cards_found; |
| adapter->netdev = netdev; |
| adapter->pdev = pdev; |
| adapter->hw.adapter = adapter; |
| adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg); |
| adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| if (!adapter->hw.hw_addr) { |
| err = -EIO; |
| dev_err(&pdev->dev, "cannot map device registers\n"); |
| goto err_ioremap; |
| } |
| netdev->base_addr = (unsigned long)adapter->hw.hw_addr; |
| |
| /* init mii data */ |
| adapter->mii.dev = netdev; |
| adapter->mii.mdio_read = atl1c_mdio_read; |
| adapter->mii.mdio_write = atl1c_mdio_write; |
| adapter->mii.phy_id_mask = 0x1f; |
| adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK; |
| netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64); |
| setup_timer(&adapter->phy_config_timer, atl1c_phy_config, |
| (unsigned long)adapter); |
| /* setup the private structure */ |
| err = atl1c_sw_init(adapter); |
| if (err) { |
| dev_err(&pdev->dev, "net device private data init failed\n"); |
| goto err_sw_init; |
| } |
| atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE | |
| ATL1C_PCIE_PHY_RESET); |
| |
| /* Init GPHY as early as possible due to power saving issue */ |
| atl1c_phy_reset(&adapter->hw); |
| |
| err = atl1c_reset_mac(&adapter->hw); |
| if (err) { |
| err = -EIO; |
| goto err_reset; |
| } |
| |
| device_init_wakeup(&pdev->dev, 1); |
| /* reset the controller to |
| * put the device in a known good starting state */ |
| err = atl1c_phy_init(&adapter->hw); |
| if (err) { |
| err = -EIO; |
| goto err_reset; |
| } |
| if (atl1c_read_mac_addr(&adapter->hw) != 0) { |
| err = -EIO; |
| dev_err(&pdev->dev, "get mac address failed\n"); |
| goto err_eeprom; |
| } |
| memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); |
| memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
| if (netif_msg_probe(adapter)) |
| dev_dbg(&pdev->dev, |
| "mac address : %02x-%02x-%02x-%02x-%02x-%02x\n", |
| adapter->hw.mac_addr[0], adapter->hw.mac_addr[1], |
| adapter->hw.mac_addr[2], adapter->hw.mac_addr[3], |
| adapter->hw.mac_addr[4], adapter->hw.mac_addr[5]); |
| |
| atl1c_hw_set_mac_addr(&adapter->hw); |
| INIT_WORK(&adapter->reset_task, atl1c_reset_task); |
| INIT_WORK(&adapter->link_chg_task, atl1c_link_chg_task); |
| err = register_netdev(netdev); |
| if (err) { |
| dev_err(&pdev->dev, "register netdevice failed\n"); |
| goto err_register; |
| } |
| |
| if (netif_msg_probe(adapter)) |
| dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION); |
| cards_found++; |
| return 0; |
| |
| err_reset: |
| err_register: |
| err_sw_init: |
| err_eeprom: |
| iounmap(adapter->hw.hw_addr); |
| err_init_netdev: |
| err_ioremap: |
| free_netdev(netdev); |
| err_alloc_etherdev: |
| pci_release_regions(pdev); |
| err_pci_reg: |
| err_dma: |
| pci_disable_device(pdev); |
| return err; |
| } |
| |
| /* |
| * atl1c_remove - Device Removal Routine |
| * @pdev: PCI device information struct |
| * |
| * atl1c_remove is called by the PCI subsystem to alert the driver |
| * that it should release a PCI device. The could be caused by a |
| * Hot-Plug event, or because the driver is going to be removed from |
| * memory. |
| */ |
| static void __devexit atl1c_remove(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| unregister_netdev(netdev); |
| atl1c_phy_disable(&adapter->hw); |
| |
| iounmap(adapter->hw.hw_addr); |
| |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| free_netdev(netdev); |
| } |
| |
| /* |
| * atl1c_io_error_detected - called when PCI error is detected |
| * @pdev: Pointer to PCI device |
| * @state: The current pci connection state |
| * |
| * This function is called after a PCI bus error affecting |
| * this device has been detected. |
| */ |
| static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev, |
| pci_channel_state_t state) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| netif_device_detach(netdev); |
| |
| if (state == pci_channel_io_perm_failure) |
| return PCI_ERS_RESULT_DISCONNECT; |
| |
| if (netif_running(netdev)) |
| atl1c_down(adapter); |
| |
| pci_disable_device(pdev); |
| |
| /* Request a slot slot reset. */ |
| return PCI_ERS_RESULT_NEED_RESET; |
| } |
| |
| /* |
| * atl1c_io_slot_reset - called after the pci bus has been reset. |
| * @pdev: Pointer to PCI device |
| * |
| * Restart the card from scratch, as if from a cold-boot. Implementation |
| * resembles the first-half of the e1000_resume routine. |
| */ |
| static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| if (pci_enable_device(pdev)) { |
| if (netif_msg_hw(adapter)) |
| dev_err(&pdev->dev, |
| "Cannot re-enable PCI device after reset\n"); |
| return PCI_ERS_RESULT_DISCONNECT; |
| } |
| pci_set_master(pdev); |
| |
| pci_enable_wake(pdev, PCI_D3hot, 0); |
| pci_enable_wake(pdev, PCI_D3cold, 0); |
| |
| atl1c_reset_mac(&adapter->hw); |
| |
| return PCI_ERS_RESULT_RECOVERED; |
| } |
| |
| /* |
| * atl1c_io_resume - called when traffic can start flowing again. |
| * @pdev: Pointer to PCI device |
| * |
| * This callback is called when the error recovery driver tells us that |
| * its OK to resume normal operation. Implementation resembles the |
| * second-half of the atl1c_resume routine. |
| */ |
| static void atl1c_io_resume(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct atl1c_adapter *adapter = netdev_priv(netdev); |
| |
| if (netif_running(netdev)) { |
| if (atl1c_up(adapter)) { |
| if (netif_msg_hw(adapter)) |
| dev_err(&pdev->dev, |
| "Cannot bring device back up after reset\n"); |
| return; |
| } |
| } |
| |
| netif_device_attach(netdev); |
| } |
| |
| static struct pci_error_handlers atl1c_err_handler = { |
| .error_detected = atl1c_io_error_detected, |
| .slot_reset = atl1c_io_slot_reset, |
| .resume = atl1c_io_resume, |
| }; |
| |
| static struct pci_driver atl1c_driver = { |
| .name = atl1c_driver_name, |
| .id_table = atl1c_pci_tbl, |
| .probe = atl1c_probe, |
| .remove = __devexit_p(atl1c_remove), |
| /* Power Managment Hooks */ |
| .suspend = atl1c_suspend, |
| .resume = atl1c_resume, |
| .shutdown = atl1c_shutdown, |
| .err_handler = &atl1c_err_handler |
| }; |
| |
| /* |
| * atl1c_init_module - Driver Registration Routine |
| * |
| * atl1c_init_module is the first routine called when the driver is |
| * loaded. All it does is register with the PCI subsystem. |
| */ |
| static int __init atl1c_init_module(void) |
| { |
| return pci_register_driver(&atl1c_driver); |
| } |
| |
| /* |
| * atl1c_exit_module - Driver Exit Cleanup Routine |
| * |
| * atl1c_exit_module is called just before the driver is removed |
| * from memory. |
| */ |
| static void __exit atl1c_exit_module(void) |
| { |
| pci_unregister_driver(&atl1c_driver); |
| } |
| |
| module_init(atl1c_init_module); |
| module_exit(atl1c_exit_module); |