diff options
Diffstat (limited to 'drivers/net/atl1e/atl1e_main.c')
| -rw-r--r-- | drivers/net/atl1e/atl1e_main.c | 2599 |
1 files changed, 2599 insertions, 0 deletions
diff --git a/drivers/net/atl1e/atl1e_main.c b/drivers/net/atl1e/atl1e_main.c new file mode 100644 index 00000000000..35264c244cf --- /dev/null +++ b/drivers/net/atl1e/atl1e_main.c @@ -0,0 +1,2599 @@ +/* + * Copyright(c) 2007 Atheros Corporation. All rights reserved. + * + * Derived from Intel e1000 driver + * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include "atl1e.h" + +#define DRV_VERSION "1.0.0.7-NAPI" + +char atl1e_driver_name[] = "ATL1E"; +char atl1e_driver_version[] = DRV_VERSION; +#define PCI_DEVICE_ID_ATTANSIC_L1E 0x1026 +/* + * atl1e_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 atl1e_pci_tbl[] = { + {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1E)}, + /* required last entry */ + { 0 } +}; +MODULE_DEVICE_TABLE(pci, atl1e_pci_tbl); + +MODULE_AUTHOR("Atheros Corporation, <xiong.huang@atheros.com>, Jie Yang <jie.yang@atheros.com>"); +MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +static inline void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter); + +static const u16 +atl1e_rx_page_vld_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = +{ + {REG_HOST_RXF0_PAGE0_VLD, REG_HOST_RXF0_PAGE1_VLD}, + {REG_HOST_RXF1_PAGE0_VLD, REG_HOST_RXF1_PAGE1_VLD}, + {REG_HOST_RXF2_PAGE0_VLD, REG_HOST_RXF2_PAGE1_VLD}, + {REG_HOST_RXF3_PAGE0_VLD, REG_HOST_RXF3_PAGE1_VLD} +}; + +static const u16 atl1e_rx_page_hi_addr_regs[AT_MAX_RECEIVE_QUEUE] = +{ + REG_RXF0_BASE_ADDR_HI, + REG_RXF1_BASE_ADDR_HI, + REG_RXF2_BASE_ADDR_HI, + REG_RXF3_BASE_ADDR_HI +}; + +static const u16 +atl1e_rx_page_lo_addr_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = +{ + {REG_HOST_RXF0_PAGE0_LO, REG_HOST_RXF0_PAGE1_LO}, + {REG_HOST_RXF1_PAGE0_LO, REG_HOST_RXF1_PAGE1_LO}, + {REG_HOST_RXF2_PAGE0_LO, REG_HOST_RXF2_PAGE1_LO}, + {REG_HOST_RXF3_PAGE0_LO, REG_HOST_RXF3_PAGE1_LO} +}; + +static const u16 +atl1e_rx_page_write_offset_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = +{ + {REG_HOST_RXF0_MB0_LO, REG_HOST_RXF0_MB1_LO}, + {REG_HOST_RXF1_MB0_LO, REG_HOST_RXF1_MB1_LO}, + {REG_HOST_RXF2_MB0_LO, REG_HOST_RXF2_MB1_LO}, + {REG_HOST_RXF3_MB0_LO, REG_HOST_RXF3_MB1_LO} +}; + +static const u16 atl1e_pay_load_size[] = { + 128, 256, 512, 1024, 2048, 4096, +}; + +/* + * atl1e_irq_enable - Enable default interrupt generation settings + * @adapter: board private structure + */ +static inline void atl1e_irq_enable(struct atl1e_adapter *adapter) +{ + if (likely(atomic_dec_and_test(&adapter->irq_sem))) { + AT_WRITE_REG(&adapter->hw, REG_ISR, 0); + AT_WRITE_REG(&adapter->hw, REG_IMR, IMR_NORMAL_MASK); + AT_WRITE_FLUSH(&adapter->hw); + } +} + +/* + * atl1e_irq_disable - Mask off interrupt generation on the NIC + * @adapter: board private structure + */ +static inline void atl1e_irq_disable(struct atl1e_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); +} + +/* + * atl1e_irq_reset - reset interrupt confiure on the NIC + * @adapter: board private structure + */ +static inline void atl1e_irq_reset(struct atl1e_adapter *adapter) +{ + atomic_set(&adapter->irq_sem, 0); + AT_WRITE_REG(&adapter->hw, REG_ISR, 0); + AT_WRITE_REG(&adapter->hw, REG_IMR, 0); + AT_WRITE_FLUSH(&adapter->hw); +} + +/* + * atl1e_phy_config - Timer Call-back + * @data: pointer to netdev cast into an unsigned long + */ +static void atl1e_phy_config(unsigned long data) +{ + struct atl1e_adapter *adapter = (struct atl1e_adapter *) data; + struct atl1e_hw *hw = &adapter->hw; + unsigned long flags; + + spin_lock_irqsave(&adapter->mdio_lock, flags); + atl1e_restart_autoneg(hw); + spin_unlock_irqrestore(&adapter->mdio_lock, flags); +} + +void atl1e_reinit_locked(struct atl1e_adapter *adapter) +{ + + WARN_ON(in_interrupt()); + while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) + msleep(1); + atl1e_down(adapter); + atl1e_up(adapter); + clear_bit(__AT_RESETTING, &adapter->flags); +} + +static void atl1e_reset_task(struct work_struct *work) +{ + struct atl1e_adapter *adapter; + adapter = container_of(work, struct atl1e_adapter, reset_task); + + atl1e_reinit_locked(adapter); +} + +static int atl1e_check_link(struct atl1e_adapter *adapter) +{ + struct atl1e_hw *hw = &adapter->hw; + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + int err = 0; + u16 speed, duplex, phy_data; + + /* MII_BMSR must read twise */ + atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); + atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); + if ((phy_data & BMSR_LSTATUS) == 0) { + /* link down */ + if (netif_carrier_ok(netdev)) { /* old link state: Up */ + u32 value; + /* disable rx */ + value = AT_READ_REG(hw, REG_MAC_CTRL); + value &= ~MAC_CTRL_RX_EN; + AT_WRITE_REG(hw, REG_MAC_CTRL, value); + adapter->link_speed = SPEED_0; + netif_carrier_off(netdev); + netif_stop_queue(netdev); + } + } else { + /* Link Up */ + err = atl1e_get_speed_and_duplex(hw, &speed, &duplex); + if (unlikely(err)) + return err; + + /* link result is our setting */ + if (adapter->link_speed != speed || + adapter->link_duplex != duplex) { + adapter->link_speed = speed; + adapter->link_duplex = duplex; + atl1e_setup_mac_ctrl(adapter); + dev_info(&pdev->dev, + "%s: %s NIC Link is Up<%d Mbps %s>\n", + atl1e_driver_name, netdev->name, + adapter->link_speed, + adapter->link_duplex == FULL_DUPLEX ? + "Full Duplex" : "Half Duplex"); + } + + if (!netif_carrier_ok(netdev)) { + /* Link down -> Up */ + netif_carrier_on(netdev); + netif_wake_queue(netdev); + } + } + return 0; +} + +/* + * atl1e_link_chg_task - deal with link change event Out of interrupt context + * @netdev: network interface device structure + */ +static void atl1e_link_chg_task(struct work_struct *work) +{ + struct atl1e_adapter *adapter; + unsigned long flags; + + adapter = container_of(work, struct atl1e_adapter, link_chg_task); + spin_lock_irqsave(&adapter->mdio_lock, flags); + atl1e_check_link(adapter); + spin_unlock_irqrestore(&adapter->mdio_lock, flags); +} + +static void atl1e_link_chg_event(struct atl1e_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + u16 phy_data = 0; + u16 link_up = 0; + + spin_lock(&adapter->mdio_lock); + atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); + atl1e_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 */ + dev_info(&pdev->dev, "%s: %s NIC Link is Down\n", + atl1e_driver_name, netdev->name); + adapter->link_speed = SPEED_0; + netif_stop_queue(netdev); + } + } + schedule_work(&adapter->link_chg_task); +} + +static void atl1e_del_timer(struct atl1e_adapter *adapter) +{ + del_timer_sync(&adapter->phy_config_timer); +} + +static void atl1e_cancel_work(struct atl1e_adapter *adapter) +{ + cancel_work_sync(&adapter->reset_task); + cancel_work_sync(&adapter->link_chg_task); +} + +/* + * atl1e_tx_timeout - Respond to a Tx Hang + * @netdev: network interface device structure + */ +static void atl1e_tx_timeout(struct net_device *netdev) +{ + struct atl1e_adapter *adapter = netdev_priv(netdev); + + /* Do the reset outside of interrupt context */ + schedule_work(&adapter->reset_task); +} + +/* + * atl1e_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 atl1e_set_multi(struct net_device *netdev) +{ + struct atl1e_adapter *adapter = netdev_priv(netdev); + struct atl1e_hw *hw = &adapter->hw; + struct dev_mc_list *mc_ptr; + u32 mac_ctrl_data = 0; + u32 hash_value; + + /* Check for Promiscuous and All Multicast modes */ + mac_ctrl_data = AT_READ_REG(hw, REG_MAC_CTRL); + + 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 = atl1e_hash_mc_addr(hw, mc_ptr->dmi_addr); + atl1e_hash_set(hw, hash_value); + } +} + +static void atl1e_vlan_rx_register(struct net_device *netdev, + struct vlan_group *grp) +{ + struct atl1e_adapter *adapter = netdev_priv(netdev); + struct pci_dev *pdev = adapter->pdev; + u32 mac_ctrl_data = 0; + + dev_dbg(&pdev->dev, "atl1e_vlan_rx_register\n"); + + atl1e_irq_disable(adapter); + + adapter->vlgrp = grp; + mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL); + + 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); + atl1e_irq_enable(adapter); +} + +static void atl1e_restore_vlan(struct atl1e_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + + dev_dbg(&pdev->dev, "atl1e_restore_vlan !"); + atl1e_vlan_rx_register(adapter->netdev, adapter->vlgrp); +} +/* + * atl1e_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 atl1e_set_mac_addr(struct net_device *netdev, void *p) +{ + struct atl1e_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); + + atl1e_hw_set_mac_addr(&adapter->hw); + + return 0; +} + +/* + * atl1e_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 atl1e_change_mtu(struct net_device *netdev, int new_mtu) +{ + struct atl1e_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)) { + 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; + adapter->hw.rx_jumbo_th = (max_frame + 7) >> 3; + atl1e_down(adapter); + atl1e_up(adapter); + clear_bit(__AT_RESETTING, &adapter->flags); + } + return 0; +} + +/* + * caller should hold mdio_lock + */ +static int atl1e_mdio_read(struct net_device *netdev, int phy_id, int reg_num) +{ + struct atl1e_adapter *adapter = netdev_priv(netdev); + u16 result; + + atl1e_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); + return result; +} + +static void atl1e_mdio_write(struct net_device *netdev, int phy_id, + int reg_num, int val) +{ + struct atl1e_adapter *adapter = netdev_priv(netdev); + + atl1e_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val); +} + +/* + * atl1e_mii_ioctl - + * @netdev: + * @ifreq: + * @cmd: + */ +static int atl1e_mii_ioctl(struct net_device *netdev, + struct ifreq *ifr, int cmd) +{ + struct atl1e_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 (!capable(CAP_NET_ADMIN)) { + retval = -EPERM; + goto out; + } + if (atl1e_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, + &data->val_out)) { + retval = -EIO; + goto out; + } + break; + + case SIOCSMIIREG: + if (!capable(CAP_NET_ADMIN)) { + retval = -EPERM; + goto out; + } + if (data->reg_num & ~(0x1F)) { + retval = -EFAULT; + goto out; + } + + dev_dbg(&pdev->dev, "<atl1e_mii_ioctl> write %x %x", + data->reg_num, data->val_in); + if (atl1e_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; + +} + +/* + * atl1e_ioctl - + * @netdev: + * @ifreq: + * @cmd: + */ +static int atl1e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) +{ + switch (cmd) { + case SIOCGMIIPHY: + case SIOCGMIIREG: + case SIOCSMIIREG: + return atl1e_mii_ioctl(netdev, ifr, cmd); + default: + return -EOPNOTSUPP; + } +} + +static void atl1e_setup_pcicmd(struct pci_dev *pdev) +{ + u16 cmd; + + pci_read_config_word(pdev, PCI_COMMAND, &cmd); + cmd &= ~(PCI_COMMAND_INTX_DISABLE | PCI_COMMAND_IO); + cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); + pci_write_config_word(pdev, PCI_COMMAND, cmd); + + /* + * some motherboards BIOS(PXE/EFI) driver may set PME + * while they transfer control to OS (Windows/Linux) + * so we should clear this bit before NIC work normally + */ + pci_write_config_dword(pdev, REG_PM_CTRLSTAT, 0); + msleep(1); +} + +/* + * atl1e_alloc_queues - Allocate memory for all rings + * @adapter: board private structure to initialize + * + */ +static int __devinit atl1e_alloc_queues(struct atl1e_adapter *adapter) +{ + return 0; +} + +/* + * atl1e_sw_init - Initialize general software structures (struct atl1e_adapter) + * @adapter: board private structure to initialize + * + * atl1e_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 atl1e_sw_init(struct atl1e_adapter *adapter) +{ + struct atl1e_hw *hw = &adapter->hw; + struct pci_dev *pdev = adapter->pdev; + u32 phy_status_data = 0; + + adapter->wol = 0; + adapter->link_speed = SPEED_0; /* hardware init */ + adapter->link_duplex = FULL_DUPLEX; + adapter->num_rx_queues = 1; + + /* PCI config space info */ + hw->vendor_id = pdev->vendor; + hw->device_id = pdev->device; + hw->subsystem_vendor_id = pdev->subsystem_vendor; + hw->subsystem_id = pdev->subsystem_device; + + pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); + pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); + + phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); + /* nic type */ + if (hw->revision_id >= 0xF0) { + hw->nic_type = athr_l2e_revB; + } else { + if (phy_status_data & PHY_STATUS_100M) + hw->nic_type = athr_l1e; + else + hw->nic_type = athr_l2e_revA; + } + + phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); + + if (phy_status_data & PHY_STATUS_EMI_CA) + hw->emi_ca = true; + else + hw->emi_ca = false; + + hw->phy_configured = false; + hw->preamble_len = 7; + hw->max_frame_size = adapter->netdev->mtu; + hw->rx_jumbo_th = (hw->max_frame_size + ETH_HLEN + + VLAN_HLEN + ETH_FCS_LEN + 7) >> 3; + + hw->rrs_type = atl1e_rrs_disable; + hw->indirect_tab = 0; + hw->base_cpu = 0; + + /* need confirm */ + + hw->ict = 50000; /* 100ms */ + hw->smb_timer = 200000; /* 200ms */ + hw->tpd_burst = 5; + hw->rrd_thresh = 1; + hw->tpd_thresh = adapter->tx_ring.count / 2; + hw->rx_count_down = 4; /* 2us resolution */ + hw->tx_count_down = hw->imt * 4 / 3; + hw->dmar_block = atl1e_dma_req_1024; + hw->dmaw_block = atl1e_dma_req_1024; + hw->dmar_dly_cnt = 15; + hw->dmaw_dly_cnt = 4; + + if (atl1e_alloc_queues(adapter)) { + dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); + return -ENOMEM; + } + + 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; +} + +/* + * atl1e_clean_tx_ring - Free Tx-skb + * @adapter: board private structure + */ +static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter) +{ + struct atl1e_tx_ring *tx_ring = (struct atl1e_tx_ring *) + &adapter->tx_ring; + struct atl1e_tx_buffer *tx_buffer = NULL; + struct pci_dev *pdev = adapter->pdev; + u16 index, ring_count; + + if (tx_ring->desc == NULL || tx_ring->tx_buffer == NULL) + return; + + ring_count = tx_ring->count; + /* first unmmap dma */ + for (index = 0; index < ring_count; index++) { + tx_buffer = &tx_ring->tx_buffer[index]; + if (tx_buffer->dma) { + pci_unmap_page(pdev, tx_buffer->dma, + tx_buffer->length, PCI_DMA_TODEVICE); + tx_buffer->dma = 0; + } + } + /* second free skb */ + for (index = 0; index < ring_count; index++) { + tx_buffer = &tx_ring->tx_buffer[index]; + if (tx_buffer->skb) { + dev_kfree_skb_any(tx_buffer->skb); + tx_buffer->skb = NULL; + } + } + /* Zero out Tx-buffers */ + memset(tx_ring->desc, 0, sizeof(struct atl1e_tpd_desc) * + ring_count); + memset(tx_ring->tx_buffer, 0, sizeof(struct atl1e_tx_buffer) * + ring_count); +} + +/* + * atl1e_clean_rx_ring - Free rx-reservation skbs + * @adapter: board private structure + */ +static void atl1e_clean_rx_ring(struct atl1e_adapter *adapter) +{ + struct atl1e_rx_ring *rx_ring = + (struct atl1e_rx_ring *)&adapter->rx_ring; + struct atl1e_rx_page_desc *rx_page_desc = rx_ring->rx_page_desc; + u16 i, j; + + + if (adapter->ring_vir_addr == NULL) + return; + /* Zero out the descriptor ring */ + for (i = 0; i < adapter->num_rx_queues; i++) { + for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { + if (rx_page_desc[i].rx_page[j].addr != NULL) { + memset(rx_page_desc[i].rx_page[j].addr, 0, + rx_ring->real_page_size); + } + } + } +} + +static void atl1e_cal_ring_size(struct atl1e_adapter *adapter, u32 *ring_size) +{ + *ring_size = ((u32)(adapter->tx_ring.count * + sizeof(struct atl1e_tpd_desc) + 7 + /* tx ring, qword align */ + + adapter->rx_ring.real_page_size * AT_PAGE_NUM_PER_QUEUE * + adapter->num_rx_queues + 31 + /* rx ring, 32 bytes align */ + + (1 + AT_PAGE_NUM_PER_QUEUE * adapter->num_rx_queues) * + sizeof(u32) + 3)); + /* tx, rx cmd, dword align */ +} + +static void atl1e_init_ring_resources(struct atl1e_adapter *adapter) +{ + struct atl1e_tx_ring *tx_ring = NULL; + struct atl1e_rx_ring *rx_ring = NULL; + + tx_ring = &adapter->tx_ring; + rx_ring = &adapter->rx_ring; + + rx_ring->real_page_size = adapter->rx_ring.page_size + + adapter->hw.max_frame_size + + ETH_HLEN + VLAN_HLEN + + ETH_FCS_LEN; + rx_ring->real_page_size = roundup(rx_ring->real_page_size, 32); + atl1e_cal_ring_size(adapter, &adapter->ring_size); + + adapter->ring_vir_addr = NULL; + adapter->rx_ring.desc = NULL; + rwlock_init(&adapter->tx_ring.tx_lock); + + return; +} + +/* + * Read / Write Ptr Initialize: + */ +static void atl1e_init_ring_ptrs(struct atl1e_adapter *adapter) +{ + struct atl1e_tx_ring *tx_ring = NULL; + struct atl1e_rx_ring *rx_ring = NULL; + struct atl1e_rx_page_desc *rx_page_desc = NULL; + int i, j; + + tx_ring = &adapter->tx_ring; + rx_ring = &adapter->rx_ring; + rx_page_desc = rx_ring->rx_page_desc; + + tx_ring->next_to_use = 0; + atomic_set(&tx_ring->next_to_clean, 0); + + for (i = 0; i < adapter->num_rx_queues; i++) { + rx_page_desc[i].rx_using = 0; + rx_page_desc[i].rx_nxseq = 0; + for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { + *rx_page_desc[i].rx_page[j].write_offset_addr = 0; + rx_page_desc[i].rx_page[j].read_offset = 0; + } + } +} + +/* + * atl1e_free_ring_resources - Free Tx / RX descriptor Resources + * @adapter: board private structure + * + * Free all transmit software resources + */ +static void atl1e_free_ring_resources(struct atl1e_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + + atl1e_clean_tx_ring(adapter); + atl1e_clean_rx_ring(adapter); + + if (adapter->ring_vir_addr) { + pci_free_consistent(pdev, adapter->ring_size, + adapter->ring_vir_addr, adapter->ring_dma); + adapter->ring_vir_addr = NULL; + } + + if (adapter->tx_ring.tx_buffer) { + kfree(adapter->tx_ring.tx_buffer); + adapter->tx_ring.tx_buffer = NULL; + } +} + +/* + * atl1e_setup_mem_resources - allocate Tx / RX descriptor resources + * @adapter: board private structure + * + * Return 0 on success, negative on failure + */ +static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct atl1e_tx_ring *tx_ring; + struct atl1e_rx_ring *rx_ring; + struct atl1e_rx_page_desc *rx_page_desc; + int size, i, j; + u32 offset = 0; + int err = 0; + + if (adapter->ring_vir_addr != NULL) + return 0; /* alloced already */ + + tx_ring = &adapter->tx_ring; + rx_ring = &adapter->rx_ring; + + /* real ring DMA buffer */ + + size = adapter->ring_size; + adapter->ring_vir_addr = pci_alloc_consistent(pdev, + adapter->ring_size, &adapter->ring_dma); + + if (adapter->ring_vir_addr == NULL) { + dev_err(&pdev->dev, "pci_alloc_consistent failed, " + "size = D%d", size); + return -ENOMEM; + } + + memset(adapter->ring_vir_addr, 0, adapter->ring_size); + + rx_page_desc = rx_ring->rx_page_desc; + + /* Init TPD Ring */ + tx_ring->dma = roundup(adapter->ring_dma, 8); + offset = tx_ring->dma - adapter->ring_dma; + tx_ring->desc = (struct atl1e_tpd_desc *) + (adapter->ring_vir_addr + offset); + size = sizeof(struct atl1e_tx_buffer) * (tx_ring->count); + tx_ring->tx_buffer = kzalloc(size, GFP_KERNEL); + if (tx_ring->tx_buffer == NULL) { + dev_err(&pdev->dev, "kzalloc failed , size = D%d", size); + err = -ENOMEM; + goto failed; + } + + /* Init RXF-Pages */ + offset += (sizeof(struct atl1e_tpd_desc) * tx_ring->count); + offset = roundup(offset, 32); + + for (i = 0; i < adapter->num_rx_queues; i++) { + for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { + rx_page_desc[i].rx_page[j].dma = + adapter->ring_dma + offset; + rx_page_desc[i].rx_page[j].addr = + adapter->ring_vir_addr + offset; + offset += rx_ring->real_page_size; + } + } + + /* Init CMB dma address */ + tx_ring->cmb_dma = adapter->ring_dma + offset; + tx_ring->cmb = (u32 *)(adapter->ring_vir_addr + offset); + offset += sizeof(u32); + + for (i = 0; i < adapter->num_rx_queues; i++) { + for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { + rx_page_desc[i].rx_page[j].write_offset_dma = + adapter->ring_dma + offset; + rx_page_desc[i].rx_page[j].write_offset_addr = + adapter->ring_vir_addr + offset; + offset += sizeof(u32); + } + } + + if (unlikely(offset > adapter->ring_size)) { + dev_err(&pdev->dev, "offset(%d) > ring size(%d) !!\n", + offset, adapter->ring_size); + err = -1; + goto failed; + } + + return 0; +failed: + if (adapter->ring_vir_addr != NULL) { + pci_free_consistent(pdev, adapter->ring_size, + adapter->ring_vir_addr, adapter->ring_dma); + adapter->ring_vir_addr = NULL; + } + return err; +} + +static inline void atl1e_configure_des_ring(const struct atl1e_adapter *adapter) +{ + + struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; + struct atl1e_rx_ring *rx_ring = + (struct atl1e_rx_ring *)&adapter->rx_ring; + struct atl1e_tx_ring *tx_ring = + (struct atl1e_tx_ring *)&adapter->tx_ring; + struct atl1e_rx_page_desc *rx_page_desc = NULL; + int i, j; + + AT_WRITE_REG(hw, REG_DESC_BASE_ADDR_HI, + (u32)((adapter->ring_dma & AT_DMA_HI_ADDR_MASK) >> 32)); + AT_WRITE_REG(hw, REG_TPD_BASE_ADDR_LO, + (u32)((tx_ring->dma) & AT_DMA_LO_ADDR_MASK)); + AT_WRITE_REG(hw, REG_TPD_RING_SIZE, (u16)(tx_ring->count)); + AT_WRITE_REG(hw, REG_HOST_TX_CMB_LO, + (u32)((tx_ring->cmb_dma) & AT_DMA_LO_ADDR_MASK)); + + rx_page_desc = rx_ring->rx_page_desc; + /* RXF Page Physical address / Page Length */ + for (i = 0; i < AT_MAX_RECEIVE_QUEUE; i++) { + AT_WRITE_REG(hw, atl1e_rx_page_hi_addr_regs[i], + (u32)((adapter->ring_dma & + AT_DMA_HI_ADDR_MASK) >> 32)); + for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { + u32 page_phy_addr; + u32 offset_phy_addr; + + page_phy_addr = rx_page_desc[i].rx_page[j].dma; + offset_phy_addr = + rx_page_desc[i].rx_page[j].write_offset_dma; + + AT_WRITE_REG(hw, atl1e_rx_page_lo_addr_regs[i][j], + page_phy_addr & AT_DMA_LO_ADDR_MASK); + AT_WRITE_REG(hw, atl1e_rx_page_write_offset_regs[i][j], + offset_phy_addr & AT_DMA_LO_ADDR_MASK); + AT_WRITE_REGB(hw, atl1e_rx_page_vld_regs[i][j], 1); + } + } + /* Page Length */ + AT_WRITE_REG(hw, REG_HOST_RXFPAGE_SIZE, rx_ring->page_size); + /* Load all of base address above */ + AT_WRITE_REG(hw, REG_LOAD_PTR, 1); + + return; +} + +static inline void atl1e_configure_tx(struct atl1e_adapter *adapter) +{ + struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; + u32 dev_ctrl_data = 0; + u32 max_pay_load = 0; + u32 jumbo_thresh = 0; + u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */ + + /* configure TXQ param */ + if (hw->nic_type != athr_l2e_revB) { + extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN; + if (hw->max_frame_size <= 1500) { + jumbo_thresh = hw->max_frame_size + extra_size; + } else if (hw->max_frame_size < 6*1024) { + jumbo_thresh = + (hw->max_frame_size + extra_size) * 2 / 3; + } else { + jumbo_thresh = (hw->max_frame_size + extra_size) / 2; + } + AT_WRITE_REG(hw, REG_TX_EARLY_TH, (jumbo_thresh + 7) >> 3); + } + + dev_ctrl_data = AT_READ_REG(hw, REG_DEVICE_CTRL); + + 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); + + if (hw->nic_type != athr_l2e_revB) + AT_WRITE_REGW(hw, REG_TXQ_CTRL + 2, + atl1e_pay_load_size[hw->dmar_block]); + /* enable TXQ */ + AT_WRITE_REGW(hw, REG_TXQ_CTRL, + (((u16)hw->tpd_burst & TXQ_CTRL_NUM_TPD_BURST_MASK) + << TXQ_CTRL_NUM_TPD_BURST_SHIFT) + | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN); + return; +} + +static inline void atl1e_configure_rx(struct atl1e_adapter *adapter) +{ + struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; + u32 rxf_len = 0; + u32 rxf_low = 0; + u32 rxf_high = 0; + u32 rxf_thresh_data = 0; + u32 rxq_ctrl_data = 0; + + if (hw->nic_type != athr_l2e_revB) { + AT_WRITE_REGW(hw, REG_RXQ_JMBOSZ_RRDTIM, + (u16)((hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) << + RXQ_JMBOSZ_TH_SHIFT | + (1 & RXQ_JMBO_LKAH_MASK) << + RXQ_JMBO_LKAH_SHIFT)); + + rxf_len = AT_READ_REG(hw, REG_SRAM_RXF_LEN); + rxf_high = rxf_len * 4 / 5; + rxf_low = rxf_len / 5; + rxf_thresh_data = ((rxf_high & RXQ_RXF_PAUSE_TH_HI_MASK) + << RXQ_RXF_PAUSE_TH_HI_SHIFT) | + ((rxf_low & RXQ_RXF_PAUSE_TH_LO_MASK) + << RXQ_RXF_PAUSE_TH_LO_SHIFT); + + AT_WRITE_REG(hw, REG_RXQ_RXF_PAUSE_THRESH, rxf_thresh_data); + } + + /* RRS */ + AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); + AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); + + if (hw->rrs_type & atl1e_rrs_ipv4) + rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4; + + if (hw->rrs_type & atl1e_rrs_ipv4_tcp) + rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4_TCP; + + if (hw->rrs_type & atl1e_rrs_ipv6) + rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6; + + if (hw->rrs_type & atl1e_rrs_ipv6_tcp) + rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6_TCP; + + if (hw->rrs_type != atl1e_rrs_disable) + rxq_ctrl_data |= + (RXQ_CTRL_HASH_ENABLE | RXQ_CTRL_RSS_MODE_MQUESINT); + + rxq_ctrl_data |= RXQ_CTRL_IPV6_XSUM_VERIFY_EN | RXQ_CTRL_PBA_ALIGN_32 | + RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN; + + AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); + return; +} + +static inline void atl1e_configure_dma(struct atl1e_adapter *adapter) +{ + struct atl1e_hw *hw = &adapter->hw; + u32 dma_ctrl_data = 0; + + dma_ctrl_data = DMA_CTRL_RXCMB_EN; + 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 |= DMA_CTRL_DMAR_REQ_PRI | DMA_CTRL_DMAR_OUT_ORDER; + 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); + return; +} + +static inline void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter) +{ + u32 value; + struct atl1e_hw *hw = &adapter->hw; + struct net_device *netdev = adapter->netdev; + + /* Config MAC CTRL Register */ + value = MAC_CTRL_TX_EN | + MAC_CTRL_RX_EN ; + + if (FULL_DUPLEX == adapter->link_duplex) + value |= MAC_CTRL_DUPLX; + + value |= ((u32)((SPEED_1000 == adapter->link_speed) ? + MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << + MAC_CTRL_SPEED_SHIFT); + value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); + + value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); + value |= (((u32)adapter->hw.preamble_len & + MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); + + if (adapter->vlgrp) + value |= MAC_CTRL_RMV_VLAN; + + value |= MAC_CTRL_BC_EN; + if (netdev->flags & IFF_PROMISC) + value |= MAC_CTRL_PROMIS_EN; + if (netdev->flags & IFF_ALLMULTI) + value |= MAC_CTRL_MC_ALL_EN; + + AT_WRITE_REG(hw, REG_MAC_CTRL, value); +} + +/* + * atl1e_configure - Configure Transmit&Receive Unit after Reset + * @adapter: board private structure + * + * Configure the Tx /Rx unit of the MAC after a reset. + */ +static int atl1e_configure(struct atl1e_adapter *adapter) +{ + struct atl1e_hw *hw = &adapter->hw; + struct pci_dev *pdev = adapter->pdev; + + u32 intr_status_data = 0; + + /* clear interrupt status */ + AT_WRITE_REG(hw, REG_ISR, ~0); + + /* 1. set MAC Address */ + atl1e_hw_set_mac_addr(hw); + + /* 2. Init the Multicast HASH table done by set_muti */ + + /* 3. Clear any WOL status */ + AT_WRITE_REG(hw, REG_WOL_CTRL, 0); + + /* 4. Descripter Ring BaseMem/Length/Read ptr/Write ptr + * TPD Ring/SMB/RXF0 Page CMBs, they use the same + * High 32bits memory */ + atl1e_configure_des_ring(adapter); + + /* 5. set Interrupt Moderator Timer */ + AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER_INIT, hw->imt); + AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER2_INIT, hw->imt); + AT_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_LED_MODE | + MASTER_CTRL_ITIMER_EN | MASTER_CTRL_ITIMER2_EN); + + /* 6. rx/tx threshold to trig interrupt */ + AT_WRITE_REGW(hw, REG_TRIG_RRD_THRESH, hw->rrd_thresh); + AT_WRITE_REGW(hw, REG_TRIG_TPD_THRESH, hw->tpd_thresh); + AT_WRITE_REGW(hw, REG_TRIG_RXTIMER, hw->rx_count_down); + AT_WRITE_REGW(hw, REG_TRIG_TXTIMER, hw->tx_count_down); + + /* 7. set Interrupt Clear Timer */ + AT_WRITE_REGW(hw, REG_CMBDISDMA_TIMER, hw->ict); + + /* 8. set MTU */ + AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + + VLAN_HLEN + ETH_FCS_LEN); + + /* 9. config TXQ early tx threshold */ + atl1e_configure_tx(adapter); + + /* 10. config RXQ */ + atl1e_configure_rx(adapter); + + /* 11. config DMA Engine */ + atl1e_configure_dma(adapter); + + /* 12. smb timer to trig interrupt */ + AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, hw->smb_timer); + + intr_status_data = AT_READ_REG(hw, REG_ISR); + if (unlikely((intr_status_data & ISR_PHY_LINKDOWN) != 0)) { + dev_err(&pdev->dev, "atl1e_configure failed," + "PCIE phy link down\n"); + return -1; + } + + AT_WRITE_REG(hw, REG_ISR, 0x7fffffff); + return 0; +} + +/* + * atl1e_get_stats - Get System Network Statistics + * @netdev: network interface device structure |