diff options
| author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-05-20 06:55:16 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-11 16:29:59 -0700 |
| commit | 2b133ad6e9e96798007e64eb912c42fa00adef0a (patch) | |
| tree | 34d1760a9257b150289893cda05b4adfa1990306 /drivers/net/atl1c/atl1c_main.c | |
| parent | 3401299a1b9e747cbf7de2cc0c8f6376c3cbe565 (diff) | |
atl*: Move the Atheros drivers
Move the Atheros drivers into drivers/net/ethernet/atheros/ and
make the necessary Kconfig and Makefile changes.
CC: Jay Cliburn <jcliburn@gmail.com>
CC: Chris Snook <chris.snook@gmail.com>
CC: Jie Yang <jie.yang@atheros.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/atl1c/atl1c_main.c')
| -rw-r--r-- | drivers/net/atl1c/atl1c_main.c | 2934 |
1 files changed, 0 insertions, 2934 deletions
diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c deleted file mode 100644 index 972244218408..000000000000 --- a/drivers/net/atl1c/atl1c_main.c +++ /dev/null @@ -1,2934 +0,0 @@ -/* - * 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 "1.0.1.0-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 -#define PCI_DEVICE_ID_ATHEROS_L2C_B 0x2060 /* AR8152 v1.1 Fast 10/100 */ -#define PCI_DEVICE_ID_ATHEROS_L2C_B2 0x2062 /* AR8152 v2.0 Fast 10/100 */ -#define PCI_DEVICE_ID_ATHEROS_L1D 0x1073 /* AR8151 v1.0 Gigabit 1000 */ -#define PCI_DEVICE_ID_ATHEROS_L1D_2_0 0x1083 /* AR8151 v2.0 Gigabit 1000 */ -#define L2CB_V10 0xc0 -#define L2CB_V11 0xc1 - -/* - * 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 DEFINE_PCI_DEVICE_TABLE(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)}, - {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B)}, - {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B2)}, - {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D)}, - {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D_2_0)}, - /* 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 int atl1c_up(struct atl1c_adapter *adapter); -static void atl1c_down(struct atl1c_adapter *adapter); - -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; -static void atl1c_pcie_patch(struct atl1c_hw *hw) -{ - u32 data; - - AT_READ_REG(hw, REG_PCIE_PHYMISC, &data); - data |= PCIE_PHYMISC_FORCE_RCV_DET; - AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data); - - if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) { - AT_READ_REG(hw, REG_PCIE_PHYMISC2, &data); - - data &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK << - PCIE_PHYMISC2_SERDES_CDR_SHIFT); - data |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT; - data &= ~(PCIE_PHYMISC2_SERDES_TH_MASK << - PCIE_PHYMISC2_SERDES_TH_SHIFT); - data |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT; - AT_WRITE_REG(hw, REG_PCIE_PHYMISC2, data); - } -} - -/* FIXME: no need any more ? */ -/* - * 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); - - AT_READ_REG(hw, REG_LTSSM_ID_CTRL, &data); - data &= ~LTSSM_ID_EN_WRO; - AT_WRITE_REG(hw, REG_LTSSM_ID_CTRL, data); - - atl1c_pcie_patch(hw); - 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(5); -} - -/* - * 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_REG(&adapter->hw, REG_ISR, ISR_DIS_INT); - 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_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 */ - 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); - netif_stop_queue(netdev); - atl1c_phy_reset(hw); - atl1c_phy_init(&adapter->hw); - } 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); - } -} - -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; - } - } - - set_bit(ATL1C_WORK_EVENT_LINK_CHANGE, &adapter->work_event); - schedule_work(&adapter->common_task); -} - -static void atl1c_common_task(struct work_struct *work) -{ - struct atl1c_adapter *adapter; - struct net_device *netdev; - - adapter = container_of(work, struct atl1c_adapter, common_task); - netdev = adapter->netdev; - - if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event)) { - netif_device_detach(netdev); - atl1c_down(adapter); - atl1c_up(adapter); - netif_device_attach(netdev); - } - - if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE, - &adapter->work_event)) - atl1c_check_link_status(adapter); -} - - -static void atl1c_del_timer(struct atl1c_adapter *adapter) -{ - del_timer_sync(&adapter->phy_config_timer); -} - - -/* - * 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 */ - set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); - schedule_work(&adapter->common_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 netdev_hw_addr *ha; - 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 */ - netdev_for_each_mc_addr(ha, netdev) { - hash_value = atl1c_hash_mc_addr(hw, ha->addr); - atl1c_hash_set(hw, hash_value); - } -} - -static void __atl1c_vlan_mode(u32 features, u32 *mac_ctrl_data) -{ - if (features & NETIF_F_HW_VLAN_RX) { - /* 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; - } -} - -static void atl1c_vlan_mode(struct net_device *netdev, u32 features) -{ - 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_mode\n"); - - atl1c_irq_disable(adapter); - AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data); - __atl1c_vlan_mode(features, &mac_ctrl_data); - 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\n"); - atl1c_vlan_mode(adapter->netdev, adapter->netdev->features); -} - -/* - * 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; -} - -static u32 atl1c_fix_features(struct net_device *netdev, u32 features) -{ - /* - * Since there is no support for separate rx/tx vlan accel - * enable/disable make sure tx flag is always in same state as rx. - */ - if (features & NETIF_F_HW_VLAN_RX) - features |= NETIF_F_HW_VLAN_TX; - else - features &= ~NETIF_F_HW_VLAN_TX; - - if (netdev->mtu > MAX_TSO_FRAME_SIZE) - features &= ~(NETIF_F_TSO | NETIF_F_TSO6); - - return features; -} - -static int atl1c_set_features(struct net_device *netdev, u32 features) -{ - u32 changed = netdev->features ^ features; - - if (changed & NETIF_F_HW_VLAN_RX) - atl1c_vlan_mode(netdev, features); - - return 0; -} - -/* - * 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); - netdev_update_features(netdev); - 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; - case PCI_DEVICE_ID_ATHEROS_L2C_B: - hw->nic_type = athr_l2c_b; - break; - case PCI_DEVICE_ID_ATHEROS_L2C_B2: - hw->nic_type = athr_l2c_b2; - break; - case PCI_DEVICE_ID_ATHEROS_L1D: - hw->nic_type = athr_l1d; - break; - case PCI_DEVICE_ID_ATHEROS_L1D_2_0: - hw->nic_type = athr_l1d_2; - 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_MODRT_ENABLE | - 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 (link_ctrl_data & LINK_CTRL_EXT_SYNC) - hw->ctrl_flags |= ATL1C_LINK_EXT_SYNC; - hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; - - if (hw->nic_type == athr_l1c || - hw->nic_type == athr_l1d || - hw->nic_type == athr_l1d_2) - hw->link_cap_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; - u32 revision; - - - adapter->wol = 0; - device_set_wakeup_enable(&pdev->dev, false); - 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; - AT_READ_REG(hw, PCI_CLASS_REVISION, &revision); - hw->revision_id = revision & 0xFF; - /* 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; -} - -static inline void atl1c_clean_buffer(struct pci_dev *pdev, - struct atl1c_buffer *buffer_info, int in_irq) -{ - u16 pci_driection; - if (buffer_info->flags & ATL1C_BUFFER_FREE) - return; - if (buffer_info->dma) { - if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE) - pci_driection = PCI_DMA_FROMDEVICE; - else - pci_driection = PCI_DMA_TODEVICE; - - if (buffer_info->flags & ATL1C_PCIMAP_SINGLE) - pci_unmap_single(pdev, buffer_info->dma, - buffer_info->length, pci_driection); - else if (buffer_info->flags & ATL1C_PCIMAP_PAGE) - pci_unmap_page(pdev, buffer_info->dma, - buffer_info->length, pci_driection); - } - if (buffer_info->skb) { - if (in_irq) - dev_kfree_skb_irq(buffer_info->skb); - else - dev_kfree_skb(buffer_info->skb); - } - buffer_info->dma = 0; - buffer_info->skb = NULL; - ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); -} -/* - * 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]; - atl1c_clean_buffer(pdev, buffer_info, 0); - } - - /* 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]; - atl1c_clean_buffer(pdev, buffer_info, 0); - } - /* 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++) - ATL1C_SET_BUFFER_STATE(&buffer_info[i], - ATL1C_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]; - ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_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; - u32 data; - - /* 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)); - if (hw->nic_type == athr_l2c_b) { - AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L); - AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L); - AT_WRITE_REG(hw, REG_SRAM_RXF_ADDR, 0x029f0000L); - AT_WRITE_REG(hw, REG_SRAM_RFD0_INFO, 0x02bf02a0L); - AT_WRITE_REG(hw, REG_SRAM_TXF_ADDR, 0x03bf02c0L); - AT_WRITE_REG(hw, REG_SRAM_TRD_ADDR, 0x03df03c0L); - AT_WRITE_REG(hw, REG_TXF_WATER_MARK, 0); /* TX watermark, to enter l1 state.*/ - AT_WRITE_REG(hw, REG_RXD_DMA_CTRL, 0); /* RXD threshold.*/ - } - if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d_2) { - /* Power Saving for L2c_B */ - AT_READ_REG(hw, REG_SERDES_LOCK, &data); - data |= SERDES_MAC_CLK_SLOWDOWN; - data |= SERDES_PYH_CLK_SLOWDOWN; - AT_WRITE_REG(hw, REG_SERDES_LOCK, data); - } - /* 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 max_pay_load_data; - - 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_t(u32, 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_t(u32, 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; - max_pay_load_data = (atl1c_pay_load_size[hw->dmar_block] & - TXQ_TXF_BURST_NUM_MASK) << TXQ_TXF_BURST_NUM_SHIFT; - if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) - max_pay_load_data >>= 1; - txq_ctrl_data |= max_pay_load_data; - - 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_1M & - 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; - u32 master_ctrl_data = 0; - - AT_WRITE_REG(hw, REG_IMR, 0); - AT_WRITE_REG(hw, REG_ISR, ISR_DIS_INT); - - atl1c_stop_mac(hw); - /* - * 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_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); - master_ctrl_data |= MASTER_CTRL_OOB_DIS_OFF; - AT_WRITE_REGW(hw, REG_MASTER_CTRL, ((master_ctrl_data | MASTER_CTRL_SOFT_RST) - & 0xFFFF)); - - 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; - u32 link_ctrl_data; - u32 link_l1_timer = 0xF; - - AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); - AT_READ_REG(hw, REG_LINK_CTRL, &link_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_LCKDET_TIMER_MASK << - PM_CTRL_LCKDET_TIMER_SHIFT); - pm_ctrl_data |= AT_LCKDET_TIMER << PM_CTRL_LCKDET_TIMER_SHIFT; - - if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || - hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { - link_ctrl_data &= ~LINK_CTRL_EXT_SYNC; - if (!(hw->ctrl_flags & ATL1C_APS_MODE_ENABLE)) { - if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) - link_ctrl_data |= LINK_CTRL_EXT_SYNC; - } - - AT_WRITE_REG(hw, REG_LINK_CTRL, link_ctrl_data); - - pm_ctrl_data |= PM_CTRL_RCVR_WT_TIMER; - pm_ctrl_data &= ~(PM_CTRL_PM_REQ_TIMER_MASK << - PM_CTRL_PM_REQ_TIMER_SHIFT); - pm_ctrl_data |= AT_ASPM_L1_TIMER << - PM_CTRL_PM_REQ_TIMER_SHIFT; - pm_ctrl_data &= ~PM_CTRL_SA_DLY_EN; - pm_ctrl_data &= ~PM_CTRL_HOTRST; - pm_ctrl_data |= 1 << PM_CTRL_L1_ENTRY_TIMER_SHIFT; - pm_ctrl_data |= PM_CTRL_SERDES_PD_EX_L1; - } - pm_ctrl_data |= PM_CTRL_MAC_ASPM_CHK; - if (linkup) { - pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; - pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; - if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) - pm_ctrl_data |= PM_CTRL_ASPM_L1_EN; - if (hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT) - pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN; - - if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || - hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { - if (hw->nic_type == athr_l2c_b) - if (!(hw->ctrl_flags & ATL1C_APS_MODE_ENABLE)) - pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; - pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN; - pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN; - pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN; - pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; - if (hw->adapter->link_speed == SPEED_100 || - hw->adapter->link_speed == SPEED_1000) { - pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << - PM_CTRL_L1_ENTRY_TIMER_SHIFT); - if (hw->nic_type == athr_l2c_b) - link_l1_timer = 7; - else if (hw->nic_type == athr_l2c_b2 || - hw->nic_type == athr_l1d_2) - link_l1_timer = 4; - pm_ctrl_data |= link_l1_timer << - PM_CTRL_L1_ENTRY_TIMER_SHIFT; - } - } else { - pm_ctrl_data |= PM_CTRL_SERDES_L1_EN; - pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN; - pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN; - pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1; - pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; - pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; - - } - } else { - 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); - - return; -} - -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); - - __atl1c_vlan_mode(netdev->features, &mac_ctrl_data); - - 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; - if (hw->nic_type == athr_l1d || hw->nic_type == athr_l2c_b2 || - hw->nic_type == athr_l1d_2) { - mac_ctrl_data |= MAC_CTRL_SPEED_MODE_SW; - mac_ctrl_data |= MAC_CTRL_HASH_ALG_CRC32; - } - 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; - u32 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. - */ - - data = CLK_GATING_EN_ALL; - if (hw->ctrl_flags & ATL1C_CLK_GATING_EN) { - if (hw->nic_type == athr_l2c_b) - data &= ~CLK_GATING_RXMAC_EN; - } else - data = 0; - AT_WRITE_REG(hw, REG_CLK_GATING_CTRL, data); - - 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; - - master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN; - 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 = &netdev->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 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; - struct pci_dev *pdev = adapter->pdev; - 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]; - atl1c_clean_buffer(pdev, buffer_info, 1); - 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 */ - adapter->work_event |= ATL1C_WORK_EVENT_RESET; - schedule_work(&adapter->common_task); - return IRQ_HANDLED; - } - - if (status & ISR_OVER) - if (netif_msg_intr(adapter)) - dev_warn(&pdev->dev, - "TX/RX overflow (status = 0x%x)\n", - status & ISR_OVER); - - /* link event */ - if (status & (ISR_GPHY | ISR_MANUAL)) { - netdev->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_checksum_none_assert(skb); -} - -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->flags & ATL1C_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; - ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_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); - ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, - ATL1C_PCIMAP_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; - ATL1C_SET_BUFFER_STATE(&buffer_info[rfd_index], - ATL1C_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); - atl1c_rx_checksum(adapter, skb, rrs); - if (rrs->word3 & RRS_VLAN_INS) { - u16 vlan; - - AT_TAG_TO_VLAN(rrs->vlan_tag, vlan); - vlan = le16_to_cpu(vlan); - __vlan_hwaccel_put_tag(skb, vlan); - } - 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_checksum_start_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); - ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); - ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, - ATL1C_PCIMAP_TODEVICE); - 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)); - } - 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); - ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); - ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, - ATL1C_PCIMAP_TODEVICE); - 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); - ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); - ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE, - ATL1C_PCIMAP_TODEVICE); - 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(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; -} - -static 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; -} - -static void atl1c_down(struct atl1c_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - - atl1c_del_timer(adapter); - adapter->work_event = 0; /* clear all event */ - /* 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); - /* 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 device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct net_device *netdev = pci_get_drvdata(pdev); - struct atl1c_adapter *adapter = netdev_priv(netdev); - struct atl1c_hw *hw = &adapter->hw; - u32 mac_ctrl_data = 0; - u32 master_ctrl_data = 0; - u32 wol_ctrl_data = 0; - u16 mii_intr_status_data = 0; - u32 wufc = adapter->wol; - - atl1c_disable_l0s_l1(hw); - if (netif_running(netdev)) { - WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); - atl1c_down(adapter); - } - netif_device_detach(netdev); - - if (wufc) - if (atl1c_phy_power_saving(hw) != 0) - dev_dbg(&pdev->dev, "phy power saving failed"); - - AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); - AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); - - master_ctrl_data &= ~MASTER_CTRL_CLK_SEL_DIS; - mac_ctrl_data &= ~(MAC_CTRL_PRMLEN_MASK << MAC_CTRL_PRMLEN_SHIFT); - mac_ctrl_data |= (((u32)adapter->hw.preamble_len & - MAC_CTRL_PRMLEN_MASK) << - MAC_CTRL_PRMLEN_SHIFT); - mac_ctrl_data &= ~(MAC_CTRL_SPEED_MASK << MAC_CTRL_SPEED_SHIFT); - mac_ctrl_data &= ~MAC_CTRL_DUPLX; - - if (wufc) { - mac_ctrl_data |= MAC_CTRL_RX_EN; - if (adapter->link_speed == SPEED_1000 || - adapter->link_speed == SPEED_0) { - mac_ctrl_data |= atl1c_mac_speed_1000 << - MAC_CTRL_SPEED_SHIFT; - mac_ctrl_data |= MAC_CTRL_DUPLX; - } else - mac_ctrl_data |= atl1c_mac_speed_10_100 << - MAC_CTRL_SPEED_SHIFT; - - if (adapter->link_duplex == DUPLEX_FULL) - mac_ctrl_data |= MAC_CTRL_DUPLX; - - /* 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) { - 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) { - dev_dbg(&pdev->dev, "%s: read write phy " - "register failed.\n", - atl1c_driver_name); - } - } - /* clear phy interrupt */ - atl1c_read_phy_reg(hw, MII_ISR, &mii_intr_status_data); - /* Config MAC Ctrl register */ - __atl1c_vlan_mode(netdev->features, &mac_ctrl_data); - - /* magic packet maybe Broadcast&multicast&Unicast frame */ - if (wufc & AT_WUFC_MAG) - mac_ctrl_data |= MAC_CTRL_BC_EN; - - 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); - - AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT | - GPHY_CTRL_EXT_RESET); - } else { - AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_POWER_SAVING); - master_ctrl_data |= MASTER_CTRL_CLK_SEL_DIS; - mac_ctrl_data |= atl1c_mac_speed_10_100 << MAC_CTRL_SPEED_SHIFT; - mac_ctrl_data |= MAC_CTRL_DUPLX; - AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); - AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); - AT_WRITE_REG(hw, REG_WOL_CTRL, 0); - hw->phy_configured = false; /* re-init PHY when resume */ - } - - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int atl1c_resume(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct net_device *netdev = pci_get_drvdata(pdev); - struct atl1c_adapter *adapter = netdev_priv(netdev); - - AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); - atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE | - ATL1C_PCIE_PHY_RESET); - - atl1c_phy_reset(&adapter->hw); - atl1c_reset_mac(&adapter->hw); - atl1c_phy_init(&adapter->hw); - -#if 0 - AT_READ_REG(&adapter->hw, REG_PM_CTRLSTAT, &pm_data); - pm_data &= ~PM_CTRLSTAT_PME_EN; - AT_WRITE_REG(&adapter->hw, REG_PM_CTRLSTAT, pm_data); -#endif - - netif_device_attach(netdev); - if (netif_running(netdev)) - atl1c_up(adapter); - - return 0; -} -#endif - -static void atl1c_shutdown(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct atl1c_adapter *adapter = netdev_priv(netdev); - - atl1c_suspend(&pdev->dev); - pci_wake_from_d3(pdev, adapter->wol); - pci_set_power_state(pdev, PCI_D3hot); -} - -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_fix_features = atl1c_fix_features, - .ndo_set_features = atl1c_set_features, - .ndo_do_ioctl = atl1c_ioctl, - .ndo_tx_timeout = atl1c_tx_timeout, - .ndo_get_stats = atl1c_get_stats, -#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->hw_features = NETIF_F_SG | - NETIF_F_HW_CSUM | - NETIF_F_HW_VLAN_RX | - NETIF_F_TSO | - NETIF_F_TSO6; - netdev->features = netdev->hw_features | - NETIF_F_HW_VLAN_TX; - 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; - } - - /* 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 : %pM\n", - adapter->hw.mac_addr); - - atl1c_hw_set_mac_addr(&adapter->hw); - INIT_WORK(&adapter->common_task, atl1c_common_task); - adapter->work_event = 0; - 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 SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume); - -static struct pci_driver atl1c_driver = { - .name = atl1c_driver_name, - .id_table = atl1c_pci_tbl, - .probe = atl1c_probe, - .remove = __devexit_p(atl1c_remove), - .shutdown = atl1c_shutdown, - .err_handler = &atl1c_err_handler, - .driver.pm = &atl1c_pm_ops, -}; - -/* - * 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); |