--- /dev/null
+/*
+ * Copyright(c) 2006 - 2007 Atheros Corporation. All rights reserved.
+ * Copyright(c) 2007 - 2008 Chris Snook <csnook@redhat.com>
+ *
+ * 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 <linux/atomic.h>
+#include <linux/crc32.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/hardirq.h>
+#include <linux/if_vlan.h>
+#include <linux/in.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h>
+#include <linux/irqflags.h>
+#include <linux/irqreturn.h>
+#include <linux/mii.h>
+#include <linux/net.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/pm.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/tcp.h>
+#include <linux/timer.h>
+#include <linux/types.h>
+#include <linux/workqueue.h>
+
+#include "atl2.h"
+
+#define ATL2_DRV_VERSION "2.2.3"
+
+static const char atl2_driver_name[] = "atl2";
+static const char atl2_driver_string[] = "Atheros(R) L2 Ethernet Driver";
+static const char atl2_copyright[] = "Copyright (c) 2007 Atheros Corporation.";
+static const char atl2_driver_version[] = ATL2_DRV_VERSION;
+static const struct ethtool_ops atl2_ethtool_ops;
+
+MODULE_AUTHOR("Atheros Corporation <xiong.huang@atheros.com>, Chris Snook <csnook@redhat.com>");
+MODULE_DESCRIPTION("Atheros Fast Ethernet Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(ATL2_DRV_VERSION);
+
+/*
+ * atl2_pci_tbl - PCI Device ID Table
+ */
+static const struct pci_device_id atl2_pci_tbl[] = {
+ {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2)},
+ /* required last entry */
+ {0,}
+};
+MODULE_DEVICE_TABLE(pci, atl2_pci_tbl);
+
+static void atl2_check_options(struct atl2_adapter *adapter);
+
+/**
+ * atl2_sw_init - Initialize general software structures (struct atl2_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * atl2_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 atl2_sw_init(struct atl2_adapter *adapter)
+{
+ struct atl2_hw *hw = &adapter->hw;
+ struct pci_dev *pdev = adapter->pdev;
+
+ /* 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;
+ hw->revision_id = pdev->revision;
+
+ pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
+
+ adapter->wol = 0;
+ adapter->ict = 50000; /* ~100ms */
+ adapter->link_speed = SPEED_0; /* hardware init */
+ adapter->link_duplex = FULL_DUPLEX;
+
+ hw->phy_configured = false;
+ hw->preamble_len = 7;
+ hw->ipgt = 0x60;
+ hw->min_ifg = 0x50;
+ hw->ipgr1 = 0x40;
+ hw->ipgr2 = 0x60;
+ hw->retry_buf = 2;
+ hw->max_retry = 0xf;
+ hw->lcol = 0x37;
+ hw->jam_ipg = 7;
+ hw->fc_rxd_hi = 0;
+ hw->fc_rxd_lo = 0;
+ hw->max_frame_size = adapter->netdev->mtu;
+
+ spin_lock_init(&adapter->stats_lock);
+
+ set_bit(__ATL2_DOWN, &adapter->flags);
+
+ return 0;
+}
+
+/**
+ * atl2_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 atl2_set_multi(struct net_device *netdev)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+ struct netdev_hw_addr *ha;
+ u32 rctl;
+ u32 hash_value;
+
+ /* Check for Promiscuous and All Multicast modes */
+ rctl = ATL2_READ_REG(hw, REG_MAC_CTRL);
+
+ if (netdev->flags & IFF_PROMISC) {
+ rctl |= MAC_CTRL_PROMIS_EN;
+ } else if (netdev->flags & IFF_ALLMULTI) {
+ rctl |= MAC_CTRL_MC_ALL_EN;
+ rctl &= ~MAC_CTRL_PROMIS_EN;
+ } else
+ rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
+
+ ATL2_WRITE_REG(hw, REG_MAC_CTRL, rctl);
+
+ /* clear the old settings from the multicast hash table */
+ ATL2_WRITE_REG(hw, REG_RX_HASH_TABLE, 0);
+ ATL2_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 = atl2_hash_mc_addr(hw, ha->addr);
+ atl2_hash_set(hw, hash_value);
+ }
+}
+
+static void init_ring_ptrs(struct atl2_adapter *adapter)
+{
+ /* Read / Write Ptr Initialize: */
+ adapter->txd_write_ptr = 0;
+ atomic_set(&adapter->txd_read_ptr, 0);
+
+ adapter->rxd_read_ptr = 0;
+ adapter->rxd_write_ptr = 0;
+
+ atomic_set(&adapter->txs_write_ptr, 0);
+ adapter->txs_next_clear = 0;
+}
+
+/**
+ * atl2_configure - Configure Transmit&Receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx /Rx unit of the MAC after a reset.
+ */
+static int atl2_configure(struct atl2_adapter *adapter)
+{
+ struct atl2_hw *hw = &adapter->hw;
+ u32 value;
+
+ /* clear interrupt status */
+ ATL2_WRITE_REG(&adapter->hw, REG_ISR, 0xffffffff);
+
+ /* set MAC Address */
+ value = (((u32)hw->mac_addr[2]) << 24) |
+ (((u32)hw->mac_addr[3]) << 16) |
+ (((u32)hw->mac_addr[4]) << 8) |
+ (((u32)hw->mac_addr[5]));
+ ATL2_WRITE_REG(hw, REG_MAC_STA_ADDR, value);
+ value = (((u32)hw->mac_addr[0]) << 8) |
+ (((u32)hw->mac_addr[1]));
+ ATL2_WRITE_REG(hw, (REG_MAC_STA_ADDR+4), value);
+
+ /* HI base address */
+ ATL2_WRITE_REG(hw, REG_DESC_BASE_ADDR_HI,
+ (u32)((adapter->ring_dma & 0xffffffff00000000ULL) >> 32));
+
+ /* LO base address */
+ ATL2_WRITE_REG(hw, REG_TXD_BASE_ADDR_LO,
+ (u32)(adapter->txd_dma & 0x00000000ffffffffULL));
+ ATL2_WRITE_REG(hw, REG_TXS_BASE_ADDR_LO,
+ (u32)(adapter->txs_dma & 0x00000000ffffffffULL));
+ ATL2_WRITE_REG(hw, REG_RXD_BASE_ADDR_LO,
+ (u32)(adapter->rxd_dma & 0x00000000ffffffffULL));
+
+ /* element count */
+ ATL2_WRITE_REGW(hw, REG_TXD_MEM_SIZE, (u16)(adapter->txd_ring_size/4));
+ ATL2_WRITE_REGW(hw, REG_TXS_MEM_SIZE, (u16)adapter->txs_ring_size);
+ ATL2_WRITE_REGW(hw, REG_RXD_BUF_NUM, (u16)adapter->rxd_ring_size);
+
+ /* config Internal SRAM */
+/*
+ ATL2_WRITE_REGW(hw, REG_SRAM_TXRAM_END, sram_tx_end);
+ ATL2_WRITE_REGW(hw, REG_SRAM_TXRAM_END, sram_rx_end);
+*/
+
+ /* config IPG/IFG */
+ value = (((u32)hw->ipgt & MAC_IPG_IFG_IPGT_MASK) <<
+ MAC_IPG_IFG_IPGT_SHIFT) |
+ (((u32)hw->min_ifg & MAC_IPG_IFG_MIFG_MASK) <<
+ MAC_IPG_IFG_MIFG_SHIFT) |
+ (((u32)hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK) <<
+ MAC_IPG_IFG_IPGR1_SHIFT)|
+ (((u32)hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK) <<
+ MAC_IPG_IFG_IPGR2_SHIFT);
+ ATL2_WRITE_REG(hw, REG_MAC_IPG_IFG, value);
+
+ /* config Half-Duplex Control */
+ value = ((u32)hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
+ (((u32)hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK) <<
+ MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
+ MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
+ (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
+ (((u32)hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK) <<
+ MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
+ ATL2_WRITE_REG(hw, REG_MAC_HALF_DUPLX_CTRL, value);
+
+ /* set Interrupt Moderator Timer */
+ ATL2_WRITE_REGW(hw, REG_IRQ_MODU_TIMER_INIT, adapter->imt);
+ ATL2_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_ITIMER_EN);
+
+ /* set Interrupt Clear Timer */
+ ATL2_WRITE_REGW(hw, REG_CMBDISDMA_TIMER, adapter->ict);
+
+ /* set MTU */
+ ATL2_WRITE_REG(hw, REG_MTU, adapter->netdev->mtu +
+ ENET_HEADER_SIZE + VLAN_SIZE + ETHERNET_FCS_SIZE);
+
+ /* 1590 */
+ ATL2_WRITE_REG(hw, REG_TX_CUT_THRESH, 0x177);
+
+ /* flow control */
+ ATL2_WRITE_REGW(hw, REG_PAUSE_ON_TH, hw->fc_rxd_hi);
+ ATL2_WRITE_REGW(hw, REG_PAUSE_OFF_TH, hw->fc_rxd_lo);
+
+ /* Init mailbox */
+ ATL2_WRITE_REGW(hw, REG_MB_TXD_WR_IDX, (u16)adapter->txd_write_ptr);
+ ATL2_WRITE_REGW(hw, REG_MB_RXD_RD_IDX, (u16)adapter->rxd_read_ptr);
+
+ /* enable DMA read/write */
+ ATL2_WRITE_REGB(hw, REG_DMAR, DMAR_EN);
+ ATL2_WRITE_REGB(hw, REG_DMAW, DMAW_EN);
+
+ value = ATL2_READ_REG(&adapter->hw, REG_ISR);
+ if ((value & ISR_PHY_LINKDOWN) != 0)
+ value = 1; /* config failed */
+ else
+ value = 0;
+
+ /* clear all interrupt status */
+ ATL2_WRITE_REG(&adapter->hw, REG_ISR, 0x3fffffff);
+ ATL2_WRITE_REG(&adapter->hw, REG_ISR, 0);
+ return value;
+}
+
+/**
+ * atl2_setup_ring_resources - allocate Tx / RX descriptor resources
+ * @adapter: board private structure
+ *
+ * Return 0 on success, negative on failure
+ */
+static s32 atl2_setup_ring_resources(struct atl2_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ int size;
+ u8 offset = 0;
+
+ /* real ring DMA buffer */
+ adapter->ring_size = size =
+ adapter->txd_ring_size * 1 + 7 + /* dword align */
+ adapter->txs_ring_size * 4 + 7 + /* dword align */
+ adapter->rxd_ring_size * 1536 + 127; /* 128bytes align */
+
+ adapter->ring_vir_addr = pci_alloc_consistent(pdev, size,
+ &adapter->ring_dma);
+ if (!adapter->ring_vir_addr)
+ return -ENOMEM;
+ memset(adapter->ring_vir_addr, 0, adapter->ring_size);
+
+ /* Init TXD Ring */
+ adapter->txd_dma = adapter->ring_dma ;
+ offset = (adapter->txd_dma & 0x7) ? (8 - (adapter->txd_dma & 0x7)) : 0;
+ adapter->txd_dma += offset;
+ adapter->txd_ring = adapter->ring_vir_addr + offset;
+
+ /* Init TXS Ring */
+ adapter->txs_dma = adapter->txd_dma + adapter->txd_ring_size;
+ offset = (adapter->txs_dma & 0x7) ? (8 - (adapter->txs_dma & 0x7)) : 0;
+ adapter->txs_dma += offset;
+ adapter->txs_ring = (struct tx_pkt_status *)
+ (((u8 *)adapter->txd_ring) + (adapter->txd_ring_size + offset));
+
+ /* Init RXD Ring */
+ adapter->rxd_dma = adapter->txs_dma + adapter->txs_ring_size * 4;
+ offset = (adapter->rxd_dma & 127) ?
+ (128 - (adapter->rxd_dma & 127)) : 0;
+ if (offset > 7)
+ offset -= 8;
+ else
+ offset += (128 - 8);
+
+ adapter->rxd_dma += offset;
+ adapter->rxd_ring = (struct rx_desc *) (((u8 *)adapter->txs_ring) +
+ (adapter->txs_ring_size * 4 + offset));
+
+/*
+ * Read / Write Ptr Initialize:
+ * init_ring_ptrs(adapter);
+ */
+ return 0;
+}
+
+/**
+ * atl2_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ */
+static inline void atl2_irq_enable(struct atl2_adapter *adapter)
+{
+ ATL2_WRITE_REG(&adapter->hw, REG_IMR, IMR_NORMAL_MASK);
+ ATL2_WRITE_FLUSH(&adapter->hw);
+}
+
+/**
+ * atl2_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ */
+static inline void atl2_irq_disable(struct atl2_adapter *adapter)
+{
+ ATL2_WRITE_REG(&adapter->hw, REG_IMR, 0);
+ ATL2_WRITE_FLUSH(&adapter->hw);
+ synchronize_irq(adapter->pdev->irq);
+}
+
+static void __atl2_vlan_mode(netdev_features_t features, u32 *ctrl)
+{
+ if (features & NETIF_F_HW_VLAN_CTAG_RX) {
+ /* enable VLAN tag insert/strip */
+ *ctrl |= MAC_CTRL_RMV_VLAN;
+ } else {
+ /* disable VLAN tag insert/strip */
+ *ctrl &= ~MAC_CTRL_RMV_VLAN;
+ }
+}
+
+static void atl2_vlan_mode(struct net_device *netdev,
+ netdev_features_t features)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ u32 ctrl;
+
+ atl2_irq_disable(adapter);
+
+ ctrl = ATL2_READ_REG(&adapter->hw, REG_MAC_CTRL);
+ __atl2_vlan_mode(features, &ctrl);
+ ATL2_WRITE_REG(&adapter->hw, REG_MAC_CTRL, ctrl);
+
+ atl2_irq_enable(adapter);
+}
+
+static void atl2_restore_vlan(struct atl2_adapter *adapter)
+{
+ atl2_vlan_mode(adapter->netdev, adapter->netdev->features);
+}
+
+static netdev_features_t atl2_fix_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ /*
+ * Since there is no support for separate rx/tx vlan accel
+ * enable/disable make sure tx flag is always in same state as rx.
+ */
+ if (features & NETIF_F_HW_VLAN_CTAG_RX)
+ features |= NETIF_F_HW_VLAN_CTAG_TX;
+ else
+ features &= ~NETIF_F_HW_VLAN_CTAG_TX;
+
+ return features;
+}
+
+static int atl2_set_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ netdev_features_t changed = netdev->features ^ features;
+
+ if (changed & NETIF_F_HW_VLAN_CTAG_RX)
+ atl2_vlan_mode(netdev, features);
+
+ return 0;
+}
+
+static void atl2_intr_rx(struct atl2_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct rx_desc *rxd;
+ struct sk_buff *skb;
+
+ do {
+ rxd = adapter->rxd_ring+adapter->rxd_write_ptr;
+ if (!rxd->status.update)
+ break; /* end of tx */
+
+ /* clear this flag at once */
+ rxd->status.update = 0;
+
+ if (rxd->status.ok && rxd->status.pkt_size >= 60) {
+ int rx_size = (int)(rxd->status.pkt_size - 4);
+ /* alloc new buffer */
+ skb = netdev_alloc_skb_ip_align(netdev, rx_size);
+ if (NULL == skb) {
+ /*
+ * Check that some rx space is free. If not,
+ * free one and mark stats->rx_dropped++.
+ */
+ netdev->stats.rx_dropped++;
+ break;
+ }
+ memcpy(skb->data, rxd->packet, rx_size);
+ skb_put(skb, rx_size);
+ skb->protocol = eth_type_trans(skb, netdev);
+ if (rxd->status.vlan) {
+ u16 vlan_tag = (rxd->status.vtag>>4) |
+ ((rxd->status.vtag&7) << 13) |
+ ((rxd->status.vtag&8) << 9);
+
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
+ }
+ netif_rx(skb);
+ netdev->stats.rx_bytes += rx_size;
+ netdev->stats.rx_packets++;
+ } else {
+ netdev->stats.rx_errors++;
+
+ if (rxd->status.ok && rxd->status.pkt_size <= 60)
+ netdev->stats.rx_length_errors++;
+ if (rxd->status.mcast)
+ netdev->stats.multicast++;
+ if (rxd->status.crc)
+ netdev->stats.rx_crc_errors++;
+ if (rxd->status.align)
+ netdev->stats.rx_frame_errors++;
+ }
+
+ /* advance write ptr */
+ if (++adapter->rxd_write_ptr == adapter->rxd_ring_size)
+ adapter->rxd_write_ptr = 0;
+ } while (1);
+
+ /* update mailbox? */
+ adapter->rxd_read_ptr = adapter->rxd_write_ptr;
+ ATL2_WRITE_REGW(&adapter->hw, REG_MB_RXD_RD_IDX, adapter->rxd_read_ptr);
+}
+
+static void atl2_intr_tx(struct atl2_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ u32 txd_read_ptr;
+ u32 txs_write_ptr;
+ struct tx_pkt_status *txs;
+ struct tx_pkt_header *txph;
+ int free_hole = 0;
+
+ do {
+ txs_write_ptr = (u32) atomic_read(&adapter->txs_write_ptr);
+ txs = adapter->txs_ring + txs_write_ptr;
+ if (!txs->update)
+ break; /* tx stop here */
+
+ free_hole = 1;
+ txs->update = 0;
+
+ if (++txs_write_ptr == adapter->txs_ring_size)
+ txs_write_ptr = 0;
+ atomic_set(&adapter->txs_write_ptr, (int)txs_write_ptr);
+
+ txd_read_ptr = (u32) atomic_read(&adapter->txd_read_ptr);
+ txph = (struct tx_pkt_header *)
+ (((u8 *)adapter->txd_ring) + txd_read_ptr);
+
+ if (txph->pkt_size != txs->pkt_size) {
+ struct tx_pkt_status *old_txs = txs;
+ printk(KERN_WARNING
+ "%s: txs packet size not consistent with txd"
+ " txd_:0x%08x, txs_:0x%08x!\n",
+ adapter->netdev->name,
+ *(u32 *)txph, *(u32 *)txs);
+ printk(KERN_WARNING
+ "txd read ptr: 0x%x\n",
+ txd_read_ptr);
+ txs = adapter->txs_ring + txs_write_ptr;
+ printk(KERN_WARNING
+ "txs-behind:0x%08x\n",
+ *(u32 *)txs);
+ if (txs_write_ptr < 2) {
+ txs = adapter->txs_ring +
+ (adapter->txs_ring_size +
+ txs_write_ptr - 2);
+ } else {
+ txs = adapter->txs_ring + (txs_write_ptr - 2);
+ }
+ printk(KERN_WARNING
+ "txs-before:0x%08x\n",
+ *(u32 *)txs);
+ txs = old_txs;
+ }
+
+ /* 4for TPH */
+ txd_read_ptr += (((u32)(txph->pkt_size) + 7) & ~3);
+ if (txd_read_ptr >= adapter->txd_ring_size)
+ txd_read_ptr -= adapter->txd_ring_size;
+
+ atomic_set(&adapter->txd_read_ptr, (int)txd_read_ptr);
+
+ /* tx statistics: */
+ if (txs->ok) {
+ netdev->stats.tx_bytes += txs->pkt_size;
+ netdev->stats.tx_packets++;
+ }
+ else
+ netdev->stats.tx_errors++;
+
+ if (txs->defer)
+ netdev->stats.collisions++;
+ if (txs->abort_col)
+ netdev->stats.tx_aborted_errors++;
+ if (txs->late_col)
+ netdev->stats.tx_window_errors++;
+ if (txs->underun)
+ netdev->stats.tx_fifo_errors++;
+ } while (1);
+
+ if (free_hole) {
+ if (netif_queue_stopped(adapter->netdev) &&
+ netif_carrier_ok(adapter->netdev))
+ netif_wake_queue(adapter->netdev);
+ }
+}
+
+static void atl2_check_for_link(struct atl2_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ u16 phy_data = 0;
+
+ spin_lock(&adapter->stats_lock);
+ atl2_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
+ atl2_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
+ spin_unlock(&adapter->stats_lock);
+
+ /* notify upper layer link down ASAP */
+ if (!(phy_data & BMSR_LSTATUS)) { /* Link Down */
+ if (netif_carrier_ok(netdev)) { /* old link state: Up */
+ printk(KERN_INFO "%s: %s NIC Link is Down\n",
+ atl2_driver_name, netdev->name);
+ adapter->link_speed = SPEED_0;
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+ }
+ }
+ schedule_work(&adapter->link_chg_task);
+}
+
+static inline void atl2_clear_phy_int(struct atl2_adapter *adapter)
+{
+ u16 phy_data;
+ spin_lock(&adapter->stats_lock);
+ atl2_read_phy_reg(&adapter->hw, 19, &phy_data);
+ spin_unlock(&adapter->stats_lock);
+}
+
+/**
+ * atl2_intr - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ */
+static irqreturn_t atl2_intr(int irq, void *data)
+{
+ struct atl2_adapter *adapter = netdev_priv(data);
+ struct atl2_hw *hw = &adapter->hw;
+ u32 status;
+
+ status = ATL2_READ_REG(hw, REG_ISR);
+ if (0 == status)
+ return IRQ_NONE;
+
+ /* link event */
+ if (status & ISR_PHY)
+ atl2_clear_phy_int(adapter);
+
+ /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
+ ATL2_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT);
+
+ /* check if PCIE PHY Link down */
+ if (status & ISR_PHY_LINKDOWN) {
+ if (netif_running(adapter->netdev)) { /* reset MAC */
+ ATL2_WRITE_REG(hw, REG_ISR, 0);
+ ATL2_WRITE_REG(hw, REG_IMR, 0);
+ ATL2_WRITE_FLUSH(hw);
+ schedule_work(&adapter->reset_task);
+ return IRQ_HANDLED;
+ }
+ }
+
+ /* check if DMA read/write error? */
+ if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
+ ATL2_WRITE_REG(hw, REG_ISR, 0);
+ ATL2_WRITE_REG(hw, REG_IMR, 0);
+ ATL2_WRITE_FLUSH(hw);
+ schedule_work(&adapter->reset_task);
+ return IRQ_HANDLED;
+ }
+
+ /* link event */
+ if (status & (ISR_PHY | ISR_MANUAL)) {
+ adapter->netdev->stats.tx_carrier_errors++;
+ atl2_check_for_link(adapter);
+ }
+
+ /* transmit event */
+ if (status & ISR_TX_EVENT)
+ atl2_intr_tx(adapter);
+
+ /* rx exception */
+ if (status & ISR_RX_EVENT)
+ atl2_intr_rx(adapter);
+
+ /* re-enable Interrupt */
+ ATL2_WRITE_REG(&adapter->hw, REG_ISR, 0);
+ return IRQ_HANDLED;
+}
+
+static int atl2_request_irq(struct atl2_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int flags, err = 0;
+
+ flags = IRQF_SHARED;
+ adapter->have_msi = true;
+ err = pci_enable_msi(adapter->pdev);
+ if (err)
+ adapter->have_msi = false;
+
+ if (adapter->have_msi)
+ flags &= ~IRQF_SHARED;
+
+ return request_irq(adapter->pdev->irq, atl2_intr, flags, netdev->name,
+ netdev);
+}
+
+/**
+ * atl2_free_ring_resources - Free Tx / RX descriptor Resources
+ * @adapter: board private structure
+ *
+ * Free all transmit software resources
+ */
+static void atl2_free_ring_resources(struct atl2_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ pci_free_consistent(pdev, adapter->ring_size, adapter->ring_vir_addr,
+ adapter->ring_dma);
+}
+
+/**
+ * atl2_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 atl2_open(struct net_device *netdev)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ int err;
+ u32 val;
+
+ /* disallow open during test */
+ if (test_bit(__ATL2_TESTING, &adapter->flags))
+ return -EBUSY;
+
+ /* allocate transmit descriptors */
+ err = atl2_setup_ring_resources(adapter);
+ if (err)
+ return err;
+
+ err = atl2_init_hw(&adapter->hw);
+ if (err) {
+ err = -EIO;
+ goto err_init_hw;
+ }
+
+ /* hardware has been reset, we need to reload some things */
+ atl2_set_multi(netdev);
+ init_ring_ptrs(adapter);
+
+ atl2_restore_vlan(adapter);
+
+ if (atl2_configure(adapter)) {
+ err = -EIO;
+ goto err_config;
+ }
+
+ err = atl2_request_irq(adapter);
+ if (err)
+ goto err_req_irq;
+
+ clear_bit(__ATL2_DOWN, &adapter->flags);
+
+ mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 4*HZ));
+
+ val = ATL2_READ_REG(&adapter->hw, REG_MASTER_CTRL);
+ ATL2_WRITE_REG(&adapter->hw, REG_MASTER_CTRL,
+ val | MASTER_CTRL_MANUAL_INT);
+
+ atl2_irq_enable(adapter);
+
+ return 0;
+
+err_init_hw:
+err_req_irq:
+err_config:
+ atl2_free_ring_resources(adapter);
+ atl2_reset_hw(&adapter->hw);
+
+ return err;
+}
+
+static void atl2_down(struct atl2_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ /* signal that we're down so the interrupt handler does not
+ * reschedule our watchdog timer */
+ set_bit(__ATL2_DOWN, &adapter->flags);
+
+ netif_tx_disable(netdev);
+
+ /* reset MAC to disable all RX/TX */
+ atl2_reset_hw(&adapter->hw);
+ msleep(1);
+
+ atl2_irq_disable(adapter);
+
+ del_timer_sync(&adapter->watchdog_timer);
+ del_timer_sync(&adapter->phy_config_timer);
+ clear_bit(0, &adapter->cfg_phy);
+
+ netif_carrier_off(netdev);
+ adapter->link_speed = SPEED_0;
+ adapter->link_duplex = -1;
+}
+
+static void atl2_free_irq(struct atl2_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ free_irq(adapter->pdev->irq, netdev);
+
+#ifdef CONFIG_PCI_MSI
+ if (adapter->have_msi)
+ pci_disable_msi(adapter->pdev);
+#endif
+}
+
+/**
+ * atl2_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 atl2_close(struct net_device *netdev)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+
+ WARN_ON(test_bit(__ATL2_RESETTING, &adapter->flags));
+
+ atl2_down(adapter);
+ atl2_free_irq(adapter);
+ atl2_free_ring_resources(adapter);
+
+ return 0;
+}
+
+static inline int TxsFreeUnit(struct atl2_adapter *adapter)
+{
+ u32 txs_write_ptr = (u32) atomic_read(&adapter->txs_write_ptr);
+
+ return (adapter->txs_next_clear >= txs_write_ptr) ?
+ (int) (adapter->txs_ring_size - adapter->txs_next_clear +
+ txs_write_ptr - 1) :
+ (int) (txs_write_ptr - adapter->txs_next_clear - 1);
+}
+
+static inline int TxdFreeBytes(struct atl2_adapter *adapter)
+{
+ u32 txd_read_ptr = (u32)atomic_read(&adapter->txd_read_ptr);
+
+ return (adapter->txd_write_ptr >= txd_read_ptr) ?
+ (int) (adapter->txd_ring_size - adapter->txd_write_ptr +
+ txd_read_ptr - 1) :
+ (int) (txd_read_ptr - adapter->txd_write_ptr - 1);
+}
+
+static netdev_tx_t atl2_xmit_frame(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct tx_pkt_header *txph;
+ u32 offset, copy_len;
+ int txs_unused;
+ int txbuf_unused;
+
+ if (test_bit(__ATL2_DOWN, &adapter->flags)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ if (unlikely(skb->len <= 0)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ txs_unused = TxsFreeUnit(adapter);
+ txbuf_unused = TxdFreeBytes(adapter);
+
+ if (skb->len + sizeof(struct tx_pkt_header) + 4 > txbuf_unused ||
+ txs_unused < 1) {
+ /* not enough resources */
+ netif_stop_queue(netdev);
+ return NETDEV_TX_BUSY;
+ }
+
+ offset = adapter->txd_write_ptr;
+
+ txph = (struct tx_pkt_header *) (((u8 *)adapter->txd_ring) + offset);
+
+ *(u32 *)txph = 0;
+ txph->pkt_size = skb->len;
+
+ offset += 4;
+ if (offset >= adapter->txd_ring_size)
+ offset -= adapter->txd_ring_size;
+ copy_len = adapter->txd_ring_size - offset;
+ if (copy_len >= skb->len) {
+ memcpy(((u8 *)adapter->txd_ring) + offset, skb->data, skb->len);
+ offset += ((u32)(skb->len + 3) & ~3);
+ } else {
+ memcpy(((u8 *)adapter->txd_ring)+offset, skb->data, copy_len);
+ memcpy((u8 *)adapter->txd_ring, skb->data+copy_len,
+ skb->len-copy_len);
+ offset = ((u32)(skb->len-copy_len + 3) & ~3);
+ }
+#ifdef NETIF_F_HW_VLAN_CTAG_TX
+ if (skb_vlan_tag_present(skb)) {
+ u16 vlan_tag = skb_vlan_tag_get(skb);
+ vlan_tag = (vlan_tag << 4) |
+ (vlan_tag >> 13) |
+ ((vlan_tag >> 9) & 0x8);
+ txph->ins_vlan = 1;
+ txph->vlan = vlan_tag;
+ }
+#endif
+ if (offset >= adapter->txd_ring_size)
+ offset -= adapter->txd_ring_size;
+ adapter->txd_write_ptr = offset;
+
+ /* clear txs before send */
+ adapter->txs_ring[adapter->txs_next_clear].update = 0;
+ if (++adapter->txs_next_clear == adapter->txs_ring_size)
+ adapter->txs_next_clear = 0;
+
+ ATL2_WRITE_REGW(&adapter->hw, REG_MB_TXD_WR_IDX,
+ (adapter->txd_write_ptr >> 2));
+
+ mmiowb();
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+}
+
+/**
+ * atl2_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 atl2_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+
+ if ((new_mtu < 40) || (new_mtu > (ETH_DATA_LEN + VLAN_SIZE)))
+ return -EINVAL;
+
+ /* set MTU */
+ if (hw->max_frame_size != new_mtu) {
+ netdev->mtu = new_mtu;
+ ATL2_WRITE_REG(hw, REG_MTU, new_mtu + ENET_HEADER_SIZE +
+ VLAN_SIZE + ETHERNET_FCS_SIZE);
+ }
+
+ return 0;
+}
+
+/**
+ * atl2_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 atl2_set_mac(struct net_device *netdev, void *p)
+{
+ struct atl2_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);
+
+ atl2_set_mac_addr(&adapter->hw);
+
+ return 0;
+}
+
+static int atl2_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct mii_ioctl_data *data = if_mii(ifr);
+ unsigned long flags;
+
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ data->phy_id = 0;
+ break;
+ case SIOCGMIIREG:
+ spin_lock_irqsave(&adapter->stats_lock, flags);
+ if (atl2_read_phy_reg(&adapter->hw,
+ data->reg_num & 0x1F, &data->val_out)) {
+ spin_unlock_irqrestore(&adapter->stats_lock, flags);
+ return -EIO;
+ }
+ spin_unlock_irqrestore(&adapter->stats_lock, flags);
+ break;
+ case SIOCSMIIREG:
+ if (data->reg_num & ~(0x1F))
+ return -EFAULT;
+ spin_lock_irqsave(&adapter->stats_lock, flags);
+ if (atl2_write_phy_reg(&adapter->hw, data->reg_num,
+ data->val_in)) {
+ spin_unlock_irqrestore(&adapter->stats_lock, flags);
+ return -EIO;
+ }
+ spin_unlock_irqrestore(&adapter->stats_lock, flags);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ return 0;
+}
+
+static int atl2_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ case SIOCGMIIREG:
+ case SIOCSMIIREG:
+ return atl2_mii_ioctl(netdev, ifr, cmd);
+#ifdef ETHTOOL_OPS_COMPAT
+ case SIOCETHTOOL:
+ return ethtool_ioctl(ifr);
+#endif
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+/**
+ * atl2_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ */
+static void atl2_tx_timeout(struct net_device *netdev)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+
+ /* Do the reset outside of interrupt context */
+ schedule_work(&adapter->reset_task);
+}
+
+/**
+ * atl2_watchdog - Timer Call-back
+ * @data: pointer to netdev cast into an unsigned long
+ */
+static void atl2_watchdog(unsigned long data)
+{
+ struct atl2_adapter *adapter = (struct atl2_adapter *) data;
+
+ if (!test_bit(__ATL2_DOWN, &adapter->flags)) {
+ u32 drop_rxd, drop_rxs;
+ unsigned long flags;
+
+ spin_lock_irqsave(&adapter->stats_lock, flags);
+ drop_rxd = ATL2_READ_REG(&adapter->hw, REG_STS_RXD_OV);
+ drop_rxs = ATL2_READ_REG(&adapter->hw, REG_STS_RXS_OV);
+ spin_unlock_irqrestore(&adapter->stats_lock, flags);
+
+ adapter->netdev->stats.rx_over_errors += drop_rxd + drop_rxs;
+
+ /* Reset the timer */
+ mod_timer(&adapter->watchdog_timer,
+ round_jiffies(jiffies + 4 * HZ));
+ }
+}
+
+/**
+ * atl2_phy_config - Timer Call-back
+ * @data: pointer to netdev cast into an unsigned long
+ */
+static void atl2_phy_config(unsigned long data)
+{
+ struct atl2_adapter *adapter = (struct atl2_adapter *) data;
+ struct atl2_hw *hw = &adapter->hw;
+ unsigned long flags;
+
+ spin_lock_irqsave(&adapter->stats_lock, flags);
+ atl2_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
+ atl2_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN |
+ MII_CR_RESTART_AUTO_NEG);
+ spin_unlock_irqrestore(&adapter->stats_lock, flags);
+ clear_bit(0, &adapter->cfg_phy);
+}
+
+static int atl2_up(struct atl2_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int err = 0;
+ u32 val;
+
+ /* hardware has been reset, we need to reload some things */
+
+ err = atl2_init_hw(&adapter->hw);
+ if (err) {
+ err = -EIO;
+ return err;
+ }
+
+ atl2_set_multi(netdev);
+ init_ring_ptrs(adapter);
+
+ atl2_restore_vlan(adapter);
+
+ if (atl2_configure(adapter)) {
+ err = -EIO;
+ goto err_up;
+ }
+
+ clear_bit(__ATL2_DOWN, &adapter->flags);
+
+ val = ATL2_READ_REG(&adapter->hw, REG_MASTER_CTRL);
+ ATL2_WRITE_REG(&adapter->hw, REG_MASTER_CTRL, val |
+ MASTER_CTRL_MANUAL_INT);
+
+ atl2_irq_enable(adapter);
+
+err_up:
+ return err;
+}
+
+static void atl2_reinit_locked(struct atl2_adapter *adapter)
+{
+ WARN_ON(in_interrupt());
+ while (test_and_set_bit(__ATL2_RESETTING, &adapter->flags))
+ msleep(1);
+ atl2_down(adapter);
+ atl2_up(adapter);
+ clear_bit(__ATL2_RESETTING, &adapter->flags);
+}
+
+static void atl2_reset_task(struct work_struct *work)
+{
+ struct atl2_adapter *adapter;
+ adapter = container_of(work, struct atl2_adapter, reset_task);
+
+ atl2_reinit_locked(adapter);
+}
+
+static void atl2_setup_mac_ctrl(struct atl2_adapter *adapter)
+{
+ u32 value;
+ struct atl2_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+
+ /* Config MAC CTRL Register */
+ value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN | MAC_CTRL_MACLP_CLK_PHY;
+
+ /* duplex */
+ if (FULL_DUPLEX == adapter->link_duplex)
+ value |= MAC_CTRL_DUPLX;
+
+ /* flow control */
+ value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
+
+ /* PAD & CRC */
+ value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
+
+ /* preamble length */
+ value |= (((u32)adapter->hw.preamble_len & MAC_CTRL_PRMLEN_MASK) <<
+ MAC_CTRL_PRMLEN_SHIFT);
+
+ /* vlan */
+ __atl2_vlan_mode(netdev->features, &value);
+
+ /* filter mode */
+ value |= MAC_CTRL_BC_EN;
+ if (netdev->flags & IFF_PROMISC)
+ value |= MAC_CTRL_PROMIS_EN;
+ else if (netdev->flags & IFF_ALLMULTI)
+ value |= MAC_CTRL_MC_ALL_EN;
+
+ /* half retry buffer */
+ value |= (((u32)(adapter->hw.retry_buf &
+ MAC_CTRL_HALF_LEFT_BUF_MASK)) << MAC_CTRL_HALF_LEFT_BUF_SHIFT);
+
+ ATL2_WRITE_REG(hw, REG_MAC_CTRL, value);
+}
+
+static int atl2_check_link(struct atl2_adapter *adapter)
+{
+ struct atl2_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ int ret_val;
+ u16 speed, duplex, phy_data;
+ int reconfig = 0;
+
+ /* MII_BMSR must read twise */
+ atl2_read_phy_reg(hw, MII_BMSR, &phy_data);
+ atl2_read_phy_reg(hw, MII_BMSR, &phy_data);
+ if (!(phy_data&BMSR_LSTATUS)) { /* link down */
+ if (netif_carrier_ok(netdev)) { /* old link state: Up */
+ u32 value;
+ /* disable rx */
+ value = ATL2_READ_REG(hw, REG_MAC_CTRL);
+ value &= ~MAC_CTRL_RX_EN;
+ ATL2_WRITE_REG(hw, REG_MAC_CTRL, value);
+ adapter->link_speed = SPEED_0;
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+ }
+ return 0;
+ }
+
+ /* Link Up */
+ ret_val = atl2_get_speed_and_duplex(hw, &speed, &duplex);
+ if (ret_val)
+ return ret_val;
+ switch (hw->MediaType) {
+ case MEDIA_TYPE_100M_FULL:
+ if (speed != SPEED_100 || duplex != FULL_DUPLEX)
+ reconfig = 1;
+ break;
+ case MEDIA_TYPE_100M_HALF:
+ if (speed != SPEED_100 || duplex != HALF_DUPLEX)
+ reconfig = 1;
+ break;
+ case MEDIA_TYPE_10M_FULL:
+ if (speed != SPEED_10 || duplex != FULL_DUPLEX)
+ reconfig = 1;
+ break;
+ case MEDIA_TYPE_10M_HALF:
+ if (speed != SPEED_10 || duplex != HALF_DUPLEX)
+ reconfig = 1;
+ break;
+ }
+ /* link result is our setting */
+ if (reconfig == 0) {
+ if (adapter->link_speed != speed ||
+ adapter->link_duplex != duplex) {
+ adapter->link_speed = speed;
+ adapter->link_duplex = duplex;
+ atl2_setup_mac_ctrl(adapter);
+ printk(KERN_INFO "%s: %s NIC Link is Up<%d Mbps %s>\n",
+ atl2_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;
+ }
+
+ /* change original link status */
+ if (netif_carrier_ok(netdev)) {
+ u32 value;
+ /* disable rx */
+ value = ATL2_READ_REG(hw, REG_MAC_CTRL);
+ value &= ~MAC_CTRL_RX_EN;
+ ATL2_WRITE_REG(hw, REG_MAC_CTRL, value);
+
+ adapter->link_speed = SPEED_0;
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+ }
+
+ /* auto-neg, insert timer to re-config phy
+ * (if interval smaller than 5 seconds, something strange) */
+ if (!test_bit(__ATL2_DOWN, &adapter->flags)) {
+ if (!test_and_set_bit(0, &adapter->cfg_phy))
+ mod_timer(&adapter->phy_config_timer,
+ round_jiffies(jiffies + 5 * HZ));
+ }
+
+ return 0;
+}
+
+/**
+ * atl2_link_chg_task - deal with link change event Out of interrupt context
+ */
+static void atl2_link_chg_task(struct work_struct *work)
+{
+ struct atl2_adapter *adapter;
+ unsigned long flags;
+
+ adapter = container_of(work, struct atl2_adapter, link_chg_task);
+
+ spin_lock_irqsave(&adapter->stats_lock, flags);
+ atl2_check_link(adapter);
+ spin_unlock_irqrestore(&adapter->stats_lock, flags);
+}
+
+static void atl2_setup_pcicmd(struct pci_dev *pdev)
+{
+ u16 cmd;
+
+ pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+
+ if (cmd & PCI_COMMAND_INTX_DISABLE)
+ cmd &= ~PCI_COMMAND_INTX_DISABLE;
+ if (cmd & PCI_COMMAND_IO)
+ cmd &= ~PCI_COMMAND_IO;
+ if (0 == (cmd & PCI_COMMAND_MEMORY))
+ cmd |= PCI_COMMAND_MEMORY;
+ if (0 == (cmd & PCI_COMMAND_MASTER))
+ cmd |= 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);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void atl2_poll_controller(struct net_device *netdev)
+{
+ disable_irq(netdev->irq);
+ atl2_intr(netdev->irq, netdev);
+ enable_irq(netdev->irq);
+}
+#endif
+
+
+static const struct net_device_ops atl2_netdev_ops = {
+ .ndo_open = atl2_open,
+ .ndo_stop = atl2_close,
+ .ndo_start_xmit = atl2_xmit_frame,
+ .ndo_set_rx_mode = atl2_set_multi,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = atl2_set_mac,
+ .ndo_change_mtu = atl2_change_mtu,
+ .ndo_fix_features = atl2_fix_features,
+ .ndo_set_features = atl2_set_features,
+ .ndo_do_ioctl = atl2_ioctl,
+ .ndo_tx_timeout = atl2_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = atl2_poll_controller,
+#endif
+};
+
+/**
+ * atl2_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in atl2_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * atl2_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 atl2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct net_device *netdev;
+ struct atl2_adapter *adapter;
+ static int cards_found;
+ unsigned long mmio_start;
+ int mmio_len;
+ int err;
+
+ cards_found = 0;
+
+ err = pci_enable_device(pdev);
+ if (err)
+ return err;
+
+ /*
+ * atl2 is a shared-high-32-bit device, so we're stuck with 32-bit DMA
+ * until the kernel has the proper infrastructure to support 64-bit DMA
+ * on these devices.
+ */
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
+ pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
+ printk(KERN_ERR "atl2: No usable DMA configuration, aborting\n");
+ goto err_dma;
+ }
+
+ /* Mark all PCI regions associated with PCI device
+ * pdev as being reserved by owner atl2_driver_name */
+ err = pci_request_regions(pdev, atl2_driver_name);
+ if (err)
+ goto err_pci_reg;
+
+ /* Enables bus-mastering on the device and calls
+ * pcibios_set_master to do the needed arch specific settings */
+ pci_set_master(pdev);
+
+ err = -ENOMEM;
+ netdev = alloc_etherdev(sizeof(struct atl2_adapter));
+ if (!netdev)
+ goto err_alloc_etherdev;
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ pci_set_drvdata(pdev, netdev);
+ adapter = netdev_priv(netdev);
+ adapter->netdev = netdev;
+ adapter->pdev = pdev;
+ adapter->hw.back = adapter;
+
+ mmio_start = pci_resource_start(pdev, 0x0);
+ mmio_len = pci_resource_len(pdev, 0x0);
+
+ adapter->hw.mem_rang = (u32)mmio_len;
+ adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
+ if (!adapter->hw.hw_addr) {
+ err = -EIO;
+ goto err_ioremap;
+ }
+
+ atl2_setup_pcicmd(pdev);
+
+ netdev->netdev_ops = &atl2_netdev_ops;
+ netdev->ethtool_ops = &atl2_ethtool_ops;
+ netdev->watchdog_timeo = 5 * HZ;
+ strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+
+ netdev->mem_start = mmio_start;
+ netdev->mem_end = mmio_start + mmio_len;
+ adapter->bd_number = cards_found;
+ adapter->pci_using_64 = false;
+
+ /* setup the private structure */
+ err = atl2_sw_init(adapter);
+ if (err)
+ goto err_sw_init;
+
+ err = -EIO;
+
+ netdev->hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_RX;
+ netdev->features |= (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX);
+
+ /* Init PHY as early as possible due to power saving issue */
+ atl2_phy_init(&adapter->hw);
+
+ /* reset the controller to
+ * put the device in a known good starting state */
+
+ if (atl2_reset_hw(&adapter->hw)) {
+ err = -EIO;
+ goto err_reset;
+ }
+
+ /* copy the MAC address out of the EEPROM */
+ atl2_read_mac_addr(&adapter->hw);
+ memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
+ if (!is_valid_ether_addr(netdev->dev_addr)) {
+ err = -EIO;
+ goto err_eeprom;
+ }
+
+ atl2_check_options(adapter);
+
+ setup_timer(&adapter->watchdog_timer, atl2_watchdog,
+ (unsigned long)adapter);
+
+ setup_timer(&adapter->phy_config_timer, atl2_phy_config,
+ (unsigned long)adapter);
+
+ INIT_WORK(&adapter->reset_task, atl2_reset_task);
+ INIT_WORK(&adapter->link_chg_task, atl2_link_chg_task);
+
+ strcpy(netdev->name, "eth%d"); /* ?? */
+ err = register_netdev(netdev);
+ if (err)
+ goto err_register;
+
+ /* assume we have no link for now */
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+
+ cards_found++;
+
+ return 0;
+
+err_reset:
+err_register:
+err_sw_init:
+err_eeprom:
+ iounmap(adapter->hw.hw_addr);
+err_ioremap:
+ free_netdev(netdev);
+err_alloc_etherdev:
+ pci_release_regions(pdev);
+err_pci_reg:
+err_dma:
+ pci_disable_device(pdev);
+ return err;
+}
+
+/**
+ * atl2_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * atl2_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.
+ */
+/* FIXME: write the original MAC address back in case it was changed from a
+ * BIOS-set value, as in atl1 -- CHS */
+static void atl2_remove(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+
+ /* flush_scheduled work may reschedule our watchdog task, so
+ * explicitly disable watchdog tasks from being rescheduled */
+ set_bit(__ATL2_DOWN, &adapter->flags);
+
+ del_timer_sync(&adapter->watchdog_timer);
+ del_timer_sync(&adapter->phy_config_timer);
+ cancel_work_sync(&adapter->reset_task);
+ cancel_work_sync(&adapter->link_chg_task);
+
+ unregister_netdev(netdev);
+
+ atl2_force_ps(&adapter->hw);
+
+ iounmap(adapter->hw.hw_addr);
+ pci_release_regions(pdev);
+
+ free_netdev(netdev);
+
+ pci_disable_device(pdev);
+}
+
+static int atl2_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+ u16 speed, duplex;
+ u32 ctrl = 0;
+ u32 wufc = adapter->wol;
+
+#ifdef CONFIG_PM
+ int retval = 0;
+#endif
+
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev)) {
+ WARN_ON(test_bit(__ATL2_RESETTING, &adapter->flags));
+ atl2_down(adapter);
+ }
+
+#ifdef CONFIG_PM
+ retval = pci_save_state(pdev);
+ if (retval)
+ return retval;
+#endif
+
+ atl2_read_phy_reg(hw, MII_BMSR, (u16 *)&ctrl);
+ atl2_read_phy_reg(hw, MII_BMSR, (u16 *)&ctrl);
+ if (ctrl & BMSR_LSTATUS)
+ wufc &= ~ATLX_WUFC_LNKC;
+
+ if (0 != (ctrl & BMSR_LSTATUS) && 0 != wufc) {
+ u32 ret_val;
+ /* get current link speed & duplex */
+ ret_val = atl2_get_speed_and_duplex(hw, &speed, &duplex);
+ if (ret_val) {
+ printk(KERN_DEBUG
+ "%s: get speed&duplex error while suspend\n",
+ atl2_driver_name);
+ goto wol_dis;
+ }
+
+ ctrl = 0;
+
+ /* turn on magic packet wol */
+ if (wufc & ATLX_WUFC_MAG)
+ ctrl |= (WOL_MAGIC_EN | WOL_MAGIC_PME_EN);
+
+ /* ignore Link Chg event when Link is up */
+ ATL2_WRITE_REG(hw, REG_WOL_CTRL, ctrl);
+
+ /* Config MAC CTRL Register */
+ ctrl = MAC_CTRL_RX_EN | MAC_CTRL_MACLP_CLK_PHY;
+ if (FULL_DUPLEX == adapter->link_duplex)
+ ctrl |= MAC_CTRL_DUPLX;
+ ctrl |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
+ ctrl |= (((u32)adapter->hw.preamble_len &
+ MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
+ ctrl |= (((u32)(adapter->hw.retry_buf &
+ MAC_CTRL_HALF_LEFT_BUF_MASK)) <<
+ MAC_CTRL_HALF_LEFT_BUF_SHIFT);
+ if (wufc & ATLX_WUFC_MAG) {
+ /* magic packet maybe Broadcast&multicast&Unicast */
+ ctrl |= MAC_CTRL_BC_EN;
+ }
+
+ ATL2_WRITE_REG(hw, REG_MAC_CTRL, ctrl);
+
+ /* pcie patch */
+ ctrl = ATL2_READ_REG(hw, REG_PCIE_PHYMISC);
+ ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
+ ATL2_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
+ ctrl = ATL2_READ_REG(hw, REG_PCIE_DLL_TX_CTRL1);
+ ctrl |= PCIE_DLL_TX_CTRL1_SEL_NOR_CLK;
+ ATL2_WRITE_REG(hw, REG_PCIE_DLL_TX_CTRL1, ctrl);
+
+ pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
+ goto suspend_exit;
+ }
+
+ if (0 == (ctrl&BMSR_LSTATUS) && 0 != (wufc&ATLX_WUFC_LNKC)) {
+ /* link is down, so only LINK CHG WOL event enable */
+ ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
+ ATL2_WRITE_REG(hw, REG_WOL_CTRL, ctrl);
+ ATL2_WRITE_REG(hw, REG_MAC_CTRL, 0);
+
+ /* pcie patch */
+ ctrl = ATL2_READ_REG(hw, REG_PCIE_PHYMISC);
+ ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
+ ATL2_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
+ ctrl = ATL2_READ_REG(hw, REG_PCIE_DLL_TX_CTRL1);
+ ctrl |= PCIE_DLL_TX_CTRL1_SEL_NOR_CLK;
+ ATL2_WRITE_REG(hw, REG_PCIE_DLL_TX_CTRL1, ctrl);
+
+ hw->phy_configured = false; /* re-init PHY when resume */
+
+ pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
+
+ goto suspend_exit;
+ }
+
+wol_dis:
+ /* WOL disabled */
+ ATL2_WRITE_REG(hw, REG_WOL_CTRL, 0);
+
+ /* pcie patch */
+ ctrl = ATL2_READ_REG(hw, REG_PCIE_PHYMISC);
+ ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
+ ATL2_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
+ ctrl = ATL2_READ_REG(hw, REG_PCIE_DLL_TX_CTRL1);
+ ctrl |= PCIE_DLL_TX_CTRL1_SEL_NOR_CLK;
+ ATL2_WRITE_REG(hw, REG_PCIE_DLL_TX_CTRL1, ctrl);
+
+ atl2_force_ps(hw);
+ hw->phy_configured = false; /* re-init PHY when resume */
+
+ pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
+
+suspend_exit:
+ if (netif_running(netdev))
+ atl2_free_irq(adapter);
+
+ pci_disable_device(pdev);
+
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int atl2_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ u32 err;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ printk(KERN_ERR
+ "atl2: Cannot enable PCI device from suspend\n");
+ return err;
+ }
+
+ pci_set_master(pdev);
+
+ ATL2_READ_REG(&adapter->hw, REG_WOL_CTRL); /* clear WOL status */
+
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+ pci_enable_wake(pdev, PCI_D3cold, 0);
+
+ ATL2_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0);
+
+ if (netif_running(netdev)) {
+ err = atl2_request_irq(adapter);
+ if (err)
+ return err;
+ }
+
+ atl2_reset_hw(&adapter->hw);
+
+ if (netif_running(netdev))
+ atl2_up(adapter);
+
+ netif_device_attach(netdev);
+
+ return 0;
+}
+#endif
+
+static void atl2_shutdown(struct pci_dev *pdev)
+{
+ atl2_suspend(pdev, PMSG_SUSPEND);
+}
+
+static struct pci_driver atl2_driver = {
+ .name = atl2_driver_name,
+ .id_table = atl2_pci_tbl,
+ .probe = atl2_probe,
+ .remove = atl2_remove,
+ /* Power Management Hooks */
+ .suspend = atl2_suspend,
+#ifdef CONFIG_PM
+ .resume = atl2_resume,
+#endif
+ .shutdown = atl2_shutdown,
+};
+
+/**
+ * atl2_init_module - Driver Registration Routine
+ *
+ * atl2_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ */
+static int __init atl2_init_module(void)
+{
+ printk(KERN_INFO "%s - version %s\n", atl2_driver_string,
+ atl2_driver_version);
+ printk(KERN_INFO "%s\n", atl2_copyright);
+ return pci_register_driver(&atl2_driver);
+}
+module_init(atl2_init_module);
+
+/**
+ * atl2_exit_module - Driver Exit Cleanup Routine
+ *
+ * atl2_exit_module is called just before the driver is removed
+ * from memory.
+ */
+static void __exit atl2_exit_module(void)
+{
+ pci_unregister_driver(&atl2_driver);
+}
+module_exit(atl2_exit_module);
+
+static void atl2_read_pci_cfg(struct atl2_hw *hw, u32 reg, u16 *value)
+{
+ struct atl2_adapter *adapter = hw->back;
+ pci_read_config_word(adapter->pdev, reg, value);
+}
+
+static void atl2_write_pci_cfg(struct atl2_hw *hw, u32 reg, u16 *value)
+{
+ struct atl2_adapter *adapter = hw->back;
+ pci_write_config_word(adapter->pdev, reg, *value);
+}
+
+static int atl2_get_settings(struct net_device *netdev,
+ struct ethtool_cmd *ecmd)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+
+ ecmd->supported = (SUPPORTED_10baseT_Half |
+ SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half |
+ SUPPORTED_100baseT_Full |
+ SUPPORTED_Autoneg |
+ SUPPORTED_TP);
+ ecmd->advertising = ADVERTISED_TP;
+
+ ecmd->advertising |= ADVERTISED_Autoneg;
+ ecmd->advertising |= hw->autoneg_advertised;
+
+ ecmd->port = PORT_TP;
+ ecmd->phy_address = 0;
+ ecmd->transceiver = XCVR_INTERNAL;
+
+ if (adapter->link_speed != SPEED_0) {
+ ethtool_cmd_speed_set(ecmd, adapter->link_speed);
+ if (adapter->link_duplex == FULL_DUPLEX)
+ ecmd->duplex = DUPLEX_FULL;
+ else
+ ecmd->duplex = DUPLEX_HALF;
+ } else {
+ ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
+ ecmd->duplex = DUPLEX_UNKNOWN;
+ }
+
+ ecmd->autoneg = AUTONEG_ENABLE;
+ return 0;
+}
+
+static int atl2_set_settings(struct net_device *netdev,
+ struct ethtool_cmd *ecmd)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+
+ while (test_and_set_bit(__ATL2_RESETTING, &adapter->flags))
+ msleep(1);
+
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+#define MY_ADV_MASK (ADVERTISE_10_HALF | \
+ ADVERTISE_10_FULL | \
+ ADVERTISE_100_HALF| \
+ ADVERTISE_100_FULL)
+
+ if ((ecmd->advertising & MY_ADV_MASK) == MY_ADV_MASK) {
+ hw->MediaType = MEDIA_TYPE_AUTO_SENSOR;
+ hw->autoneg_advertised = MY_ADV_MASK;
+ } else if ((ecmd->advertising & MY_ADV_MASK) ==
+ ADVERTISE_100_FULL) {
+ hw->MediaType = MEDIA_TYPE_100M_FULL;
+ hw->autoneg_advertised = ADVERTISE_100_FULL;
+ } else if ((ecmd->advertising & MY_ADV_MASK) ==
+ ADVERTISE_100_HALF) {
+ hw->MediaType = MEDIA_TYPE_100M_HALF;
+ hw->autoneg_advertised = ADVERTISE_100_HALF;
+ } else if ((ecmd->advertising & MY_ADV_MASK) ==
+ ADVERTISE_10_FULL) {
+ hw->MediaType = MEDIA_TYPE_10M_FULL;
+ hw->autoneg_advertised = ADVERTISE_10_FULL;
+ } else if ((ecmd->advertising & MY_ADV_MASK) ==
+ ADVERTISE_10_HALF) {
+ hw->MediaType = MEDIA_TYPE_10M_HALF;
+ hw->autoneg_advertised = ADVERTISE_10_HALF;
+ } else {
+ clear_bit(__ATL2_RESETTING, &adapter->flags);
+ return -EINVAL;
+ }
+ ecmd->advertising = hw->autoneg_advertised |
+ ADVERTISED_TP | ADVERTISED_Autoneg;
+ } else {
+ clear_bit(__ATL2_RESETTING, &adapter->flags);
+ return -EINVAL;
+ }
+
+ /* reset the link */
+ if (netif_running(adapter->netdev)) {
+ atl2_down(adapter);
+ atl2_up(adapter);
+ } else
+ atl2_reset_hw(&adapter->hw);
+
+ clear_bit(__ATL2_RESETTING, &adapter->flags);
+ return 0;
+}
+
+static u32 atl2_get_msglevel(struct net_device *netdev)
+{
+ return 0;
+}
+
+/*
+ * It's sane for this to be empty, but we might want to take advantage of this.
+ */
+static void atl2_set_msglevel(struct net_device *netdev, u32 data)
+{
+}
+
+static int atl2_get_regs_len(struct net_device *netdev)
+{
+#define ATL2_REGS_LEN 42
+ return sizeof(u32) * ATL2_REGS_LEN;
+}
+
+static void atl2_get_regs(struct net_device *netdev,
+ struct ethtool_regs *regs, void *p)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+ u32 *regs_buff = p;
+ u16 phy_data;
+
+ memset(p, 0, sizeof(u32) * ATL2_REGS_LEN);
+
+ regs->version = (1 << 24) | (hw->revision_id << 16) | hw->device_id;
+
+ regs_buff[0] = ATL2_READ_REG(hw, REG_VPD_CAP);
+ regs_buff[1] = ATL2_READ_REG(hw, REG_SPI_FLASH_CTRL);
+ regs_buff[2] = ATL2_READ_REG(hw, REG_SPI_FLASH_CONFIG);
+ regs_buff[3] = ATL2_READ_REG(hw, REG_TWSI_CTRL);
+ regs_buff[4] = ATL2_READ_REG(hw, REG_PCIE_DEV_MISC_CTRL);
+ regs_buff[5] = ATL2_READ_REG(hw, REG_MASTER_CTRL);
+ regs_buff[6] = ATL2_READ_REG(hw, REG_MANUAL_TIMER_INIT);
+ regs_buff[7] = ATL2_READ_REG(hw, REG_IRQ_MODU_TIMER_INIT);
+ regs_buff[8] = ATL2_READ_REG(hw, REG_PHY_ENABLE);
+ regs_buff[9] = ATL2_READ_REG(hw, REG_CMBDISDMA_TIMER);
+ regs_buff[10] = ATL2_READ_REG(hw, REG_IDLE_STATUS);
+ regs_buff[11] = ATL2_READ_REG(hw, REG_MDIO_CTRL);
+ regs_buff[12] = ATL2_READ_REG(hw, REG_SERDES_LOCK);
+ regs_buff[13] = ATL2_READ_REG(hw, REG_MAC_CTRL);
+ regs_buff[14] = ATL2_READ_REG(hw, REG_MAC_IPG_IFG);
+ regs_buff[15] = ATL2_READ_REG(hw, REG_MAC_STA_ADDR);
+ regs_buff[16] = ATL2_READ_REG(hw, REG_MAC_STA_ADDR+4);
+ regs_buff[17] = ATL2_READ_REG(hw, REG_RX_HASH_TABLE);
+ regs_buff[18] = ATL2_READ_REG(hw, REG_RX_HASH_TABLE+4);
+ regs_buff[19] = ATL2_READ_REG(hw, REG_MAC_HALF_DUPLX_CTRL);
+ regs_buff[20] = ATL2_READ_REG(hw, REG_MTU);
+ regs_buff[21] = ATL2_READ_REG(hw, REG_WOL_CTRL);
+ regs_buff[22] = ATL2_READ_REG(hw, REG_SRAM_TXRAM_END);
+ regs_buff[23] = ATL2_READ_REG(hw, REG_DESC_BASE_ADDR_HI);
+ regs_buff[24] = ATL2_READ_REG(hw, REG_TXD_BASE_ADDR_LO);
+ regs_buff[25] = ATL2_READ_REG(hw, REG_TXD_MEM_SIZE);
+ regs_buff[26] = ATL2_READ_REG(hw, REG_TXS_BASE_ADDR_LO);
+ regs_buff[27] = ATL2_READ_REG(hw, REG_TXS_MEM_SIZE);
+ regs_buff[28] = ATL2_READ_REG(hw, REG_RXD_BASE_ADDR_LO);
+ regs_buff[29] = ATL2_READ_REG(hw, REG_RXD_BUF_NUM);
+ regs_buff[30] = ATL2_READ_REG(hw, REG_DMAR);
+ regs_buff[31] = ATL2_READ_REG(hw, REG_TX_CUT_THRESH);
+ regs_buff[32] = ATL2_READ_REG(hw, REG_DMAW);
+ regs_buff[33] = ATL2_READ_REG(hw, REG_PAUSE_ON_TH);
+ regs_buff[34] = ATL2_READ_REG(hw, REG_PAUSE_OFF_TH);
+ regs_buff[35] = ATL2_READ_REG(hw, REG_MB_TXD_WR_IDX);
+ regs_buff[36] = ATL2_READ_REG(hw, REG_MB_RXD_RD_IDX);
+ regs_buff[38] = ATL2_READ_REG(hw, REG_ISR);
+ regs_buff[39] = ATL2_READ_REG(hw, REG_IMR);
+
+ atl2_read_phy_reg(hw, MII_BMCR, &phy_data);
+ regs_buff[40] = (u32)phy_data;
+ atl2_read_phy_reg(hw, MII_BMSR, &phy_data);
+ regs_buff[41] = (u32)phy_data;
+}
+
+static int atl2_get_eeprom_len(struct net_device *netdev)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+
+ if (!atl2_check_eeprom_exist(&adapter->hw))
+ return 512;
+ else
+ return 0;
+}
+
+static int atl2_get_eeprom(struct net_device *netdev,
+ struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+ u32 *eeprom_buff;
+ int first_dword, last_dword;
+ int ret_val = 0;
+ int i;
+
+ if (eeprom->len == 0)
+ return -EINVAL;
+
+ if (atl2_check_eeprom_exist(hw))
+ return -EINVAL;
+
+ eeprom->magic = hw->vendor_id | (hw->device_id << 16);
+
+ first_dword = eeprom->offset >> 2;
+ last_dword = (eeprom->offset + eeprom->len - 1) >> 2;
+
+ eeprom_buff = kmalloc(sizeof(u32) * (last_dword - first_dword + 1),
+ GFP_KERNEL);
+ if (!eeprom_buff)
+ return -ENOMEM;
+
+ for (i = first_dword; i < last_dword; i++) {
+ if (!atl2_read_eeprom(hw, i*4, &(eeprom_buff[i-first_dword]))) {
+ ret_val = -EIO;
+ goto free;
+ }
+ }
+
+ memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 3),
+ eeprom->len);
+free:
+ kfree(eeprom_buff);
+
+ return ret_val;
+}
+
+static int atl2_set_eeprom(struct net_device *netdev,
+ struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ struct atl2_hw *hw = &adapter->hw;
+ u32 *eeprom_buff;
+ u32 *ptr;
+ int max_len, first_dword, last_dword, ret_val = 0;
+ int i;
+
+ if (eeprom->len == 0)
+ return -EOPNOTSUPP;
+
+ if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
+ return -EFAULT;
+
+ max_len = 512;
+
+ first_dword = eeprom->offset >> 2;
+ last_dword = (eeprom->offset + eeprom->len - 1) >> 2;
+ eeprom_buff = kmalloc(max_len, GFP_KERNEL);
+ if (!eeprom_buff)
+ return -ENOMEM;
+
+ ptr = eeprom_buff;
+
+ if (eeprom->offset & 3) {
+ /* need read/modify/write of first changed EEPROM word */
+ /* only the second byte of the word is being modified */
+ if (!atl2_read_eeprom(hw, first_dword*4, &(eeprom_buff[0]))) {
+ ret_val = -EIO;
+ goto out;
+ }
+ ptr++;
+ }
+ if (((eeprom->offset + eeprom->len) & 3)) {
+ /*
+ * need read/modify/write of last changed EEPROM word
+ * only the first byte of the word is being modified
+ */
+ if (!atl2_read_eeprom(hw, last_dword * 4,
+ &(eeprom_buff[last_dword - first_dword]))) {
+ ret_val = -EIO;
+ goto out;
+ }
+ }
+
+ /* Device's eeprom is always little-endian, word addressable */
+ memcpy(ptr, bytes, eeprom->len);
+
+ for (i = 0; i < last_dword - first_dword + 1; i++) {
+ if (!atl2_write_eeprom(hw, ((first_dword+i)*4), eeprom_buff[i])) {
+ ret_val = -EIO;
+ goto out;
+ }
+ }
+ out:
+ kfree(eeprom_buff);
+ return ret_val;
+}
+
+static void atl2_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+
+ strlcpy(drvinfo->driver, atl2_driver_name, sizeof(drvinfo->driver));
+ strlcpy(drvinfo->version, atl2_driver_version,
+ sizeof(drvinfo->version));
+ strlcpy(drvinfo->fw_version, "L2", sizeof(drvinfo->fw_version));
+ strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
+ sizeof(drvinfo->bus_info));
+ drvinfo->n_stats = 0;
+ drvinfo->testinfo_len = 0;
+ drvinfo->regdump_len = atl2_get_regs_len(netdev);
+ drvinfo->eedump_len = atl2_get_eeprom_len(netdev);
+}
+
+static void atl2_get_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = 0;
+
+ if (adapter->wol & ATLX_WUFC_EX)
+ wol->wolopts |= WAKE_UCAST;
+ if (adapter->wol & ATLX_WUFC_MC)
+ wol->wolopts |= WAKE_MCAST;
+ if (adapter->wol & ATLX_WUFC_BC)
+ wol->wolopts |= WAKE_BCAST;
+ if (adapter->wol & ATLX_WUFC_MAG)
+ wol->wolopts |= WAKE_MAGIC;
+ if (adapter->wol & ATLX_WUFC_LNKC)
+ wol->wolopts |= WAKE_PHY;
+}
+
+static int atl2_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+
+ if (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE))
+ return -EOPNOTSUPP;
+
+ if (wol->wolopts & (WAKE_UCAST | WAKE_BCAST | WAKE_MCAST))
+ return -EOPNOTSUPP;
+
+ /* these settings will always override what we currently have */
+ adapter->wol = 0;
+
+ if (wol->wolopts & WAKE_MAGIC)
+ adapter->wol |= ATLX_WUFC_MAG;
+ if (wol->wolopts & WAKE_PHY)
+ adapter->wol |= ATLX_WUFC_LNKC;
+
+ return 0;
+}
+
+static int atl2_nway_reset(struct net_device *netdev)
+{
+ struct atl2_adapter *adapter = netdev_priv(netdev);
+ if (netif_running(netdev))
+ atl2_reinit_locked(adapter);
+ return 0;
+}
+
+static const struct ethtool_ops atl2_ethtool_ops = {
+ .get_settings = atl2_get_settings,
+ .set_settings = atl2_set_settings,
+ .get_drvinfo = atl2_get_drvinfo,
+ .get_regs_len = atl2_get_regs_len,
+ .get_regs = atl2_get_regs,
+ .get_wol = atl2_get_wol,
+ .set_wol = atl2_set_wol,
+ .get_msglevel = atl2_get_msglevel,
+ .set_msglevel = atl2_set_msglevel,
+ .nway_reset = atl2_nway_reset,
+ .get_link = ethtool_op_get_link,
+ .get_eeprom_len = atl2_get_eeprom_len,
+ .get_eeprom = atl2_get_eeprom,
+ .set_eeprom = atl2_set_eeprom,
+};
+
+#define LBYTESWAP(a) ((((a) & 0x00ff00ff) << 8) | \
+ (((a) & 0xff00ff00) >> 8))
+#define LONGSWAP(a) ((LBYTESWAP(a) << 16) | (LBYTESWAP(a) >> 16))
+#define SHORTSWAP(a) (((a) << 8) | ((a) >> 8))
+
+/*
+ * 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 s32 atl2_reset_hw(struct atl2_hw *hw)
+{
+ u32 icr;
+ u16 pci_cfg_cmd_word;
+ int i;
+
+ /* Workaround for PCI problem when BIOS sets MMRBC incorrectly. */
+ atl2_read_pci_cfg(hw, PCI_REG_COMMAND, &pci_cfg_cmd_word);
+ if ((pci_cfg_cmd_word &
+ (CMD_IO_SPACE|CMD_MEMORY_SPACE|CMD_BUS_MASTER)) !=
+ (CMD_IO_SPACE|CMD_MEMORY_SPACE|CMD_BUS_MASTER)) {
+ pci_cfg_cmd_word |=
+ (CMD_IO_SPACE|CMD_MEMORY_SPACE|CMD_BUS_MASTER);
+ atl2_write_pci_cfg(hw, PCI_REG_COMMAND, &pci_cfg_cmd_word);
+ }
+
+ /* Clear Interrupt mask to stop board from generating
+ * interrupts & Clear any pending interrupt events
+ */
+ /* FIXME */
+ /* ATL2_WRITE_REG(hw, REG_IMR, 0); */
+ /* ATL2_WRITE_REG(hw, REG_ISR, 0xffffffff); */
+
+ /* 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.
+ */
+ ATL2_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_SOFT_RST);
+ wmb();
+ msleep(1); /* delay about 1ms */
+
+ /* Wait at least 10ms for All module to be Idle */
+ for (i = 0; i < 10; i++) {
+ icr = ATL2_READ_REG(hw, REG_IDLE_STATUS);
+ if (!icr)
+ break;
+ msleep(1); /* delay 1 ms */
+ cpu_relax();
+ }
+
+ if (icr)
+ return icr;
+
+ return 0;
+}
+
+#define CUSTOM_SPI_CS_SETUP 2
+#define CUSTOM_SPI_CLK_HI 2
+#define CUSTOM_SPI_CLK_LO 2
+#define CUSTOM_SPI_CS_HOLD 2
+#define CUSTOM_SPI_CS_HI 3
+
+static struct atl2_spi_flash_dev flash_table[] =
+{
+/* MFR WRSR READ PROGRAM WREN WRDI RDSR RDID SECTOR_ERASE CHIP_ERASE */
+{"Atmel", 0x0, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52, 0x62 },
+{"SST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20, 0x60 },
+{"ST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8, 0xC7 },
+};
+
+static bool atl2_spi_read(struct atl2_hw *hw, u32 addr, u32 *buf)
+{
+ int i;
+ u32 value;
+
+ ATL2_WRITE_REG(hw, REG_SPI_DATA, 0);
+ ATL2_WRITE_REG(hw, REG_SPI_ADDR, addr);
+
+ value = SPI_FLASH_CTRL_WAIT_READY |
+ (CUSTOM_SPI_CS_SETUP & SPI_FLASH_CTRL_CS_SETUP_MASK) <<
+ SPI_FLASH_CTRL_CS_SETUP_SHIFT |
+ (CUSTOM_SPI_CLK_HI & SPI_FLASH_CTRL_CLK_HI_MASK) <<
+ SPI_FLASH_CTRL_CLK_HI_SHIFT |
+ (CUSTOM_SPI_CLK_LO & SPI_FLASH_CTRL_CLK_LO_MASK) <<
+ SPI_FLASH_CTRL_CLK_LO_SHIFT |
+ (CUSTOM_SPI_CS_HOLD & SPI_FLASH_CTRL_CS_HOLD_MASK) <<
+ SPI_FLASH_CTRL_CS_HOLD_SHIFT |
+ (CUSTOM_SPI_CS_HI & SPI_FLASH_CTRL_CS_HI_MASK) <<
+ SPI_FLASH_CTRL_CS_HI_SHIFT |
+ (0x1 & SPI_FLASH_CTRL_INS_MASK) << SPI_FLASH_CTRL_INS_SHIFT;
+
+ ATL2_WRITE_REG(hw, REG_SPI_FLASH_CTRL, value);
+
+ value |= SPI_FLASH_CTRL_START;
+
+ ATL2_WRITE_REG(hw, REG_SPI_FLASH_CTRL, value);
+
+ for (i = 0; i < 10; i++) {
+ msleep(1);
+ value = ATL2_READ_REG(hw, REG_SPI_FLASH_CTRL);
+ if (!(value & SPI_FLASH_CTRL_START))
+ break;
+ }
+
+ if (value & SPI_FLASH_CTRL_START)
+ return false;
+
+ *buf = ATL2_READ_REG(hw, REG_SPI_DATA);
+
+ return true;
+}
+
+/*
+ * get_permanent_address
+ * return 0 if get valid mac address,
+ */
+static int get_permanent_address(struct atl2_hw *hw)
+{
+ u32 Addr[2];
+ u32 i, Control;
+ u16 Register;
+ u8 EthAddr[ETH_ALEN];
+ bool KeyValid;
+
+ if (is_valid_ether_addr(hw->perm_mac_addr))
+ return 0;
+
+ Addr[0] = 0;
+ Addr[1] = 0;
+
+ if (!atl2_check_eeprom_exist(hw)) { /* eeprom exists */
+ Register = 0;
+ KeyValid = false;
+
+ /* Read out all EEPROM content */
+ i = 0;
+ while (1) {
+ if (atl2_read_eeprom(hw, i + 0x100, &Control)) {
+ if (KeyValid) {
+ if (Register == REG_MAC_STA_ADDR)
+ Addr[0] = Control;
+ else if (Register ==
+ (REG_MAC_STA_ADDR + 4))
+ Addr[1] = Control;
+ KeyValid = false;
+ } else if ((Control & 0xff) == 0x5A) {
+ KeyValid = true;
+ Register = (u16) (Control >> 16);
+ } else {
+ /* assume data end while encount an invalid KEYWORD */
+ break;
+ }
+ } else {
+ break; /* read error */
+ }
+ i += 4;
+ }
+
+ *(u32 *) &EthAddr[2] = LONGSWAP(Addr[0]);
+ *(u16 *) &EthAddr[0] = SHORTSWAP(*(u16 *) &Addr[1]);
+
+ if (is_valid_ether_addr(EthAddr)) {
+ memcpy(hw->perm_mac_addr, EthAddr, ETH_ALEN);
+ return 0;
+ }
+ return 1;
+ }
+
+ /* see if SPI flash exists? */
+ Addr[0] = 0;
+ Addr[1] = 0;
+ Register = 0;
+ KeyValid = false;
+ i = 0;
+ while (1) {
+ if (atl2_spi_read(hw, i + 0x1f000, &Control)) {
+ if (KeyValid) {
+ if (Register == REG_MAC_STA_ADDR)
+ Addr[0] = Control;
+ else if (Register == (REG_MAC_STA_ADDR + 4))
+ Addr[1] = Control;
+ KeyValid = false;
+ } else if ((Control & 0xff) == 0x5A) {
+ KeyValid = true;
+ Register = (u16) (Control >> 16);
+ } else {
+ break; /* data end */
+ }
+ } else {
+ break; /* read error */
+ }
+ i += 4;
+ }
+
+ *(u32 *) &EthAddr[2] = LONGSWAP(Addr[0]);
+ *(u16 *) &EthAddr[0] = SHORTSWAP(*(u16 *)&Addr[1]);
+ if (is_valid_ether_addr(EthAddr)) {
+ memcpy(hw->perm_mac_addr, EthAddr, ETH_ALEN);
+ return 0;
+ }
+ /* maybe MAC-address is from BIOS */
+ Addr[0] = ATL2_READ_REG(hw, REG_MAC_STA_ADDR);
+ Addr[1] = ATL2_READ_REG(hw, REG_MAC_STA_ADDR + 4);
+ *(u32 *) &EthAddr[2] = LONGSWAP(Addr[0]);
+ *(u16 *) &EthAddr[0] = SHORTSWAP(*(u16 *) &Addr[1]);
+
+ if (is_valid_ether_addr(EthAddr)) {
+ memcpy(hw->perm_mac_addr, EthAddr, ETH_ALEN);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Reads the adapter's MAC address from the EEPROM
+ *
+ * hw - Struct containing variables accessed by shared code
+ */
+static s32 atl2_read_mac_addr(struct atl2_hw *hw)
+{
+ if (get_permanent_address(hw)) {
+ /* for test */
+ /* FIXME: shouldn't we use eth_random_addr() here? */
+ hw->perm_mac_addr[0] = 0x00;
+ hw->perm_mac_addr[1] = 0x13;
+ hw->perm_mac_addr[2] = 0x74;
+ hw->perm_mac_addr[3] = 0x00;
+ hw->perm_mac_addr[4] = 0x5c;
+ hw->perm_mac_addr[5] = 0x38;
+ }
+
+ memcpy(hw->mac_addr, hw->perm_mac_addr, ETH_ALEN);
+
+ return 0;
+}
+
+/*
+ * Hashes an address to determine its location in the multicast table
+ *
+ * hw - Struct containing variables accessed by shared code
+ * mc_addr - the multicast address to hash
+ *
+ * atl2_hash_mc_addr
+ * purpose
+ * set hash value for a multicast address
+ * hash calcu processing :
+ * 1. calcu 32bit CRC for multicast address
+ * 2. reverse crc with MSB to LSB
+ */
+static u32 atl2_hash_mc_addr(struct atl2_hw *hw, u8 *mc_addr)
+{
+ u32 crc32, value;
+ int i;
+
+ value = 0;
+ crc32 = ether_crc_le(6, mc_addr);
+
+ for (i = 0; i < 32; i++)
+ value |= (((crc32 >> i) & 1) << (31 - i));
+
+ return value;
+}
+
+/*
+ * Sets the bit in the multicast table corresponding to the hash value.
+ *
+ * hw - Struct containing variables accessed by shared code
+ * hash_value - Multicast address hash value
+ */
+static void atl2_hash_set(struct atl2_hw *hw, u32 hash_value)
+{
+ u32 hash_bit, hash_reg;
+ u32 mta;
+
+ /* The HASH Table is a register array of 2 32-bit registers.
+ * It is treated like an array of 64 bits. We want to set
+ * bit BitArray[hash_value]. So we figure out what register
+ * the bit is in, read it, OR in the new bit, then write
+ * back the new value. The register is determined by the
+ * upper 7 bits of the hash value and the bit within that
+ * register are determined by the lower 5 bits of the value.
+ */
+ hash_reg = (hash_value >> 31) & 0x1;
+ hash_bit = (hash_value >> 26) & 0x1F;
+
+ mta = ATL2_READ_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg);
+
+ mta |= (1 << hash_bit);
+
+ ATL2_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg, mta);
+}
+
+/*
+ * atl2_init_pcie - init PCIE module
+ */
+static void atl2_init_pcie(struct atl2_hw *hw)
+{
+ u32 value;
+ value = LTSSM_TEST_MODE_DEF;
+ ATL2_WRITE_REG(hw, REG_LTSSM_TEST_MODE, value);
+
+ value = PCIE_DLL_TX_CTRL1_DEF;
+ ATL2_WRITE_REG(hw, REG_PCIE_DLL_TX_CTRL1, value);
+}
+
+static void atl2_init_flash_opcode(struct atl2_hw *hw)
+{
+ if (hw->flash_vendor >= ARRAY_SIZE(flash_table))
+ hw->flash_vendor = 0; /* ATMEL */
+
+ /* Init OP table */
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_PROGRAM,
+ flash_table[hw->flash_vendor].cmdPROGRAM);
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_SC_ERASE,
+ flash_table[hw->flash_vendor].cmdSECTOR_ERASE);
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_CHIP_ERASE,
+ flash_table[hw->flash_vendor].cmdCHIP_ERASE);
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_RDID,
+ flash_table[hw->flash_vendor].cmdRDID);
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_WREN,
+ flash_table[hw->flash_vendor].cmdWREN);
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_RDSR,
+ flash_table[hw->flash_vendor].cmdRDSR);
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_WRSR,
+ flash_table[hw->flash_vendor].cmdWRSR);
+ ATL2_WRITE_REGB(hw, REG_SPI_FLASH_OP_READ,
+ flash_table[hw->flash_vendor].cmdREAD);
+}
+
+/********************************************************************
+* Performs basic configuration of the adapter.
+*
+* hw - Struct containing variables accessed by shared code
+* Assumes that the controller has previously been reset and is in a
+* post-reset uninitialized state. Initializes multicast table,
+* and Calls routines to setup link
+* Leaves the transmit and receive units disabled and uninitialized.
+********************************************************************/
+static s32 atl2_init_hw(struct atl2_hw *hw)
+{
+ u32 ret_val = 0;
+
+ atl2_init_pcie(hw);
+
+ /* Zero out the Multicast HASH table */
+ /* clear the old settings from the multicast hash table */
+ ATL2_WRITE_REG(hw, REG_RX_HASH_TABLE, 0);
+ ATL2_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0);
+
+ atl2_init_flash_opcode(hw);
+
+ ret_val = atl2_phy_init(hw);
+
+ return ret_val;
+}
+
+/*
+ * Detects the current speed and duplex settings of the hardware.
+ *
+ * hw - Struct containing variables accessed by shared code
+ * speed - Speed of the connection
+ * duplex - Duplex setting of the connection
+ */
+static s32 atl2_get_speed_and_duplex(struct atl2_hw *hw, u16 *speed,
+ u16 *duplex)
+{
+ s32 ret_val;
+ u16 phy_data;
+
+ /* Read PHY Specific Status Register (17) */
+ ret_val = atl2_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data);
+ if (ret_val)
+ return ret_val;
+
+ if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED))
+ return ATLX_ERR_PHY_RES;
+
+ switch (phy_data & MII_ATLX_PSSR_SPEED) {
+ case MII_ATLX_PSSR_100MBS:
+ *speed = SPEED_100;
+ break;
+ case MII_ATLX_PSSR_10MBS:
+ *speed = SPEED_10;
+ break;
+ default:
+ return ATLX_ERR_PHY_SPEED;
+ }
+
+ if (phy_data & MII_ATLX_PSSR_DPLX)
+ *duplex = FULL_DUPLEX;
+ else
+ *duplex = HALF_DUPLEX;
+
+ return 0;
+}
+
+/*
+ * Reads the value from a PHY register
+ * hw - Struct containing variables accessed by shared code
+ * reg_addr - address of the PHY register to read
+ */
+static s32 atl2_read_phy_reg(struct atl2_hw *hw, u16 reg_addr, u16 *phy_data)
+{
+ u32 val;
+ int i;
+
+ val = ((u32)(reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
+ MDIO_START |
+ MDIO_SUP_PREAMBLE |
+ MDIO_RW |
+ MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
+ ATL2_WRITE_REG(hw, REG_MDIO_CTRL, val);
+
+ wmb();
+
+ for (i = 0; i < MDIO_WAIT_TIMES; i++) {
+ udelay(2);
+ val = ATL2_READ_REG(hw, REG_MDIO_CTRL);
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ break;
+ wmb();
+ }
+ if (!(val & (MDIO_START | MDIO_BUSY))) {
+ *phy_data = (u16)val;
+ return 0;
+ }
+
+ return ATLX_ERR_PHY;
+}
+
+/*
+ * Writes a value to a PHY register
+ * hw - Struct containing variables accessed by shared code
+ * reg_addr - address of the PHY register to write
+ * data - data to write to the PHY
+ */
+static s32 atl2_write_phy_reg(struct atl2_hw *hw, u32 reg_addr, u16 phy_data)
+{
+ int i;
+ u32 val;
+
+ val = ((u32)(phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
+ (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
+ MDIO_SUP_PREAMBLE |
+ MDIO_START |
+ MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
+ ATL2_WRITE_REG(hw, REG_MDIO_CTRL, val);
+
+ wmb();
+
+ for (i = 0; i < MDIO_WAIT_TIMES; i++) {
+ udelay(2);
+ val = ATL2_READ_REG(hw, REG_MDIO_CTRL);
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ break;
+
+ wmb();
+ }
+
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ return 0;
+
+ return ATLX_ERR_PHY;
+}
+
+/*
+ * Configures PHY autoneg and flow control advertisement settings
+ *
+ * hw - Struct containing variables accessed by shared code
+ */
+static s32 atl2_phy_setup_autoneg_adv(struct atl2_hw *hw)
+{
+ s32 ret_val;
+ s16 mii_autoneg_adv_reg;
+
+ /* Read the MII Auto-Neg Advertisement Register (Address 4). */
+ mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
+
+ /* Need to parse autoneg_advertised and set up
+ * the appropriate PHY registers. First we will parse for
+ * autoneg_advertised software override. Since we can advertise
+ * a plethora of combinations, we need to check each bit
+ * individually.
+ */
+
+ /* First we clear all the 10/100 mb speed bits in the Auto-Neg
+ * Advertisement Register (Address 4) and the 1000 mb speed bits in
+ * the 1000Base-T Control Register (Address 9). */
+ mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
+
+ /* Need to parse MediaType and setup the
+ * appropriate PHY registers. */
+ switch (hw->MediaType) {
+ case MEDIA_TYPE_AUTO_SENSOR:
+ mii_autoneg_adv_reg |=
+ (MII_AR_10T_HD_CAPS |
+ MII_AR_10T_FD_CAPS |
+ MII_AR_100TX_HD_CAPS|
+ MII_AR_100TX_FD_CAPS);
+ hw->autoneg_advertised =
+ ADVERTISE_10_HALF |
+ ADVERTISE_10_FULL |
+ ADVERTISE_100_HALF|
+ ADVERTISE_100_FULL;
+ break;
+ case MEDIA_TYPE_100M_FULL:
+ mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_100_FULL;
+ break;
+ case MEDIA_TYPE_100M_HALF:
+ mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_100_HALF;
+ break;
+ case MEDIA_TYPE_10M_FULL:
+ mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_10_FULL;
+ break;
+ default:
+ mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_10_HALF;
+ break;
+ }
+
+ /* flow control fixed to enable all */
+ mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
+
+ hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
+
+ ret_val = atl2_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
+
+ if (ret_val)
+ return ret_val;
+
+ return 0;
+}
+
+/*
+ * Resets the PHY and make all config validate
+ *
+ * hw - Struct containing variables accessed by shared code
+ *
+ * Sets bit 15 and 12 of the MII Control regiser (for F001 bug)
+ */
+static s32 atl2_phy_commit(struct atl2_hw *hw)
+{
+ s32 ret_val;
+ u16 phy_data;
+
+ phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG;
+ ret_val = atl2_write_phy_reg(hw, MII_BMCR, phy_data);
+ if (ret_val) {
+ u32 val;
+ int i;
+ /* pcie serdes link may be down ! */
+ for (i = 0; i < 25; i++) {
+ msleep(1);
+ val = ATL2_READ_REG(hw, REG_MDIO_CTRL);
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ break;
+ }
+
+ if (0 != (val & (MDIO_START | MDIO_BUSY))) {
+ printk(KERN_ERR "atl2: PCIe link down for at least 25ms !\n");
+ return ret_val;
+ }
+ }
+ return 0;
+}
+
+static s32 atl2_phy_init(struct atl2_hw *hw)
+{
+ s32 ret_val;
+ u16 phy_val;
+
+ if (hw->phy_configured)
+ return 0;
+
+ /* Enable PHY */
+ ATL2_WRITE_REGW(hw, REG_PHY_ENABLE, 1);
+ ATL2_WRITE_FLUSH(hw);
+ msleep(1);
+
+ /* check if the PHY is in powersaving mode */
+ atl2_write_phy_reg(hw, MII_DBG_ADDR, 0);
+ atl2_read_phy_reg(hw, MII_DBG_DATA, &phy_val);
+
+ /* 024E / 124E 0r 0274 / 1274 ? */
+ if (phy_val & 0x1000) {
+ phy_val &= ~0x1000;
+ atl2_write_phy_reg(hw, MII_DBG_DATA, phy_val);
+ }
+
+ msleep(1);
+
+ /*Enable PHY LinkChange Interrupt */
+ ret_val = atl2_write_phy_reg(hw, 18, 0xC00);
+ if (ret_val)
+ return ret_val;
+
+ /* setup AutoNeg parameters */
+ ret_val = atl2_phy_setup_autoneg_adv(hw);
+ if (ret_val)
+ return ret_val;
+
+ /* SW.Reset & En-Auto-Neg to restart Auto-Neg */
+ ret_val = atl2_phy_commit(hw);
+ if (ret_val)
+ return ret_val;
+
+ hw->phy_configured = true;
+
+ return ret_val;
+}
+
+static void atl2_set_mac_addr(struct atl2_hw *hw)
+{
+ u32 value;
+ /* 00-0B-6A-F6-00-DC
+ * 0: 6AF600DC 1: 000B
+ * low dword */
+ value = (((u32)hw->mac_addr[2]) << 24) |
+ (((u32)hw->mac_addr[3]) << 16) |
+ (((u32)hw->mac_addr[4]) << 8) |
+ (((u32)hw->mac_addr[5]));
+ ATL2_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 0, value);
+ /* hight dword */
+ value = (((u32)hw->mac_addr[0]) << 8) |
+ (((u32)hw->mac_addr[1]));
+ ATL2_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 1, value);
+}
+
+/*
+ * check_eeprom_exist
+ * return 0 if eeprom exist
+ */
+static int atl2_check_eeprom_exist(struct atl2_hw *hw)
+{
+ u32 value;
+
+ value = ATL2_READ_REG(hw, REG_SPI_FLASH_CTRL);
+ if (value & SPI_FLASH_CTRL_EN_VPD) {
+ value &= ~SPI_FLASH_CTRL_EN_VPD;
+ ATL2_WRITE_REG(hw, REG_SPI_FLASH_CTRL, value);
+ }
+ value = ATL2_READ_REGW(hw, REG_PCIE_CAP_LIST);
+ return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
+}
+
+/* FIXME: This doesn't look right. -- CHS */
+static bool atl2_write_eeprom(struct atl2_hw *hw, u32 offset, u32 value)
+{
+ return true;
+}
+
+static bool atl2_read_eeprom(struct atl2_hw *hw, u32 Offset, u32 *pValue)
+{
+ int i;
+ u32 Control;
+
+ if (Offset & 0x3)
+ return false; /* address do not align */
+
+ ATL2_WRITE_REG(hw, REG_VPD_DATA, 0);
+ Control = (Offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
+ ATL2_WRITE_REG(hw, REG_VPD_CAP, Control);
+
+ for (i = 0; i < 10; i++) {
+ msleep(2);
+ Control = ATL2_READ_REG(hw, REG_VPD_CAP);
+ if (Control & VPD_CAP_VPD_FLAG)
+ break;
+ }
+
+ if (Control & VPD_CAP_VPD_FLAG) {
+ *pValue = ATL2_READ_REG(hw, REG_VPD_DATA);
+ return true;
+ }
+ return false; /* timeout */
+}
+
+static void atl2_force_ps(struct atl2_hw *hw)
+{
+ u16 phy_val;
+
+ atl2_write_phy_reg(hw, MII_DBG_ADDR, 0);
+ atl2_read_phy_reg(hw, MII_DBG_DATA, &phy_val);
+ atl2_write_phy_reg(hw, MII_DBG_DATA, phy_val | 0x1000);
+
+ atl2_write_phy_reg(hw, MII_DBG_ADDR, 2);
+ atl2_write_phy_reg(hw, MII_DBG_DATA, 0x3000);
+ atl2_write_phy_reg(hw, MII_DBG_ADDR, 3);
+ atl2_write_phy_reg(hw, MII_DBG_DATA, 0);
+}
+
+/* This is the only thing that needs to be changed to adjust the
+ * maximum number of ports that the driver can manage.
+ */
+#define ATL2_MAX_NIC 4
+
+#define OPTION_UNSET -1
+#define OPTION_DISABLED 0
+#define OPTION_ENABLED 1
+
+/* All parameters are treated the same, as an integer array of values.
+ * This macro just reduces the need to repeat the same declaration code
+ * over and over (plus this helps to avoid typo bugs).
+ */
+#define ATL2_PARAM_INIT {[0 ... ATL2_MAX_NIC] = OPTION_UNSET}
+#ifndef module_param_array
+/* Module Parameters are always initialized to -1, so that the driver
+ * can tell the difference between no user specified value or the
+ * user asking for the default value.
+ * The true default values are loaded in when atl2_check_options is called.
+ *
+ * This is a GCC extension to ANSI C.
+ * See the item "Labeled Elements in Initializers" in the section
+ * "Extensions to the C Language Family" of the GCC documentation.
+ */
+
+#define ATL2_PARAM(X, desc) \
+ static const int X[ATL2_MAX_NIC + 1] = ATL2_PARAM_INIT; \
+ MODULE_PARM(X, "1-" __MODULE_STRING(ATL2_MAX_NIC) "i"); \
+ MODULE_PARM_DESC(X, desc);
+#else
+#define ATL2_PARAM(X, desc) \
+ static int X[ATL2_MAX_NIC+1] = ATL2_PARAM_INIT; \
+ static unsigned int num_##X; \
+ module_param_array_named(X, X, int, &num_##X, 0); \
+ MODULE_PARM_DESC(X, desc);
+#endif
+
+/*
+ * Transmit Memory Size
+ * Valid Range: 64-2048
+ * Default Value: 128
+ */
+#define ATL2_MIN_TX_MEMSIZE 4 /* 4KB */
+#define ATL2_MAX_TX_MEMSIZE 64 /* 64KB */
+#define ATL2_DEFAULT_TX_MEMSIZE 8 /* 8KB */
+ATL2_PARAM(TxMemSize, "Bytes of Transmit Memory");
+
+/*
+ * Receive Memory Block Count
+ * Valid Range: 16-512
+ * Default Value: 128
+ */
+#define ATL2_MIN_RXD_COUNT 16
+#define ATL2_MAX_RXD_COUNT 512
+#define ATL2_DEFAULT_RXD_COUNT 64
+ATL2_PARAM(RxMemBlock, "Number of receive memory block");
+
+/*
+ * User Specified MediaType Override
+ *
+ * Valid Range: 0-5
+ * - 0 - auto-negotiate at all supported speeds
+ * - 1 - only link at 1000Mbps Full Duplex
+ * - 2 - only link at 100Mbps Full Duplex
+ * - 3 - only link at 100Mbps Half Duplex
+ * - 4 - only link at 10Mbps Full Duplex
+ * - 5 - only link at 10Mbps Half Duplex
+ * Default Value: 0
+ */
+ATL2_PARAM(MediaType, "MediaType Select");
+
+/*
+ * Interrupt Moderate Timer in units of 2048 ns (~2 us)
+ * Valid Range: 10-65535
+ * Default Value: 45000(90ms)
+ */
+#define INT_MOD_DEFAULT_CNT 100 /* 200us */
+#define INT_MOD_MAX_CNT 65000
+#define INT_MOD_MIN_CNT 50
+ATL2_PARAM(IntModTimer, "Interrupt Moderator Timer");
+
+/*
+ * FlashVendor
+ * Valid Range: 0-2
+ * 0 - Atmel
+ * 1 - SST
+ * 2 - ST
+ */
+ATL2_PARAM(FlashVendor, "SPI Flash Vendor");
+
+#define AUTONEG_ADV_DEFAULT 0x2F
+#define AUTONEG_ADV_MASK 0x2F
+#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
+
+#define FLASH_VENDOR_DEFAULT 0
+#define FLASH_VENDOR_MIN 0
+#define FLASH_VENDOR_MAX 2
+
+struct atl2_option {
+ enum { enable_option, range_option, list_option } type;
+ char *name;
+ char *err;
+ int def;
+ union {
+ struct { /* range_option info */
+ int min;
+ int max;
+ } r;
+ struct { /* list_option info */
+ int nr;
+ struct atl2_opt_list { int i; char *str; } *p;
+ } l;
+ } arg;
+};
+
+static int atl2_validate_option(int *value, struct atl2_option *opt)
+{
+ int i;
+ struct atl2_opt_list *ent;
+
+ if (*value == OPTION_UNSET) {
+ *value = opt->def;
+ return 0;
+ }
+
+ switch (opt->type) {
+ case enable_option:
+ switch (*value) {
+ case OPTION_ENABLED:
+ printk(KERN_INFO "%s Enabled\n", opt->name);
+ return 0;
+ case OPTION_DISABLED:
+ printk(KERN_INFO "%s Disabled\n", opt->name);
+ return 0;
+ }
+ break;
+ case range_option:
+ if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
+ printk(KERN_INFO "%s set to %i\n", opt->name, *value);
+ return 0;
+ }
+ break;
+ case list_option:
+ for (i = 0; i < opt->arg.l.nr; i++) {
+ ent = &opt->arg.l.p[i];
+ if (*value == ent->i) {
+ if (ent->str[0] != '\0')
+ printk(KERN_INFO "%s\n", ent->str);
+ return 0;
+ }
+ }
+ break;
+ default:
+ BUG();
+ }
+
+ printk(KERN_INFO "Invalid %s specified (%i) %s\n",
+ opt->name, *value, opt->err);
+ *value = opt->def;
+ return -1;
+}
+
+/**
+ * atl2_check_options - Range Checking for Command Line Parameters
+ * @adapter: board private structure
+ *
+ * This routine checks all command line parameters for valid user
+ * input. If an invalid value is given, or if no user specified
+ * value exists, a default value is used. The final value is stored
+ * in a variable in the adapter structure.
+ */
+static void atl2_check_options(struct atl2_adapter *adapter)
+{
+ int val;
+ struct atl2_option opt;
+ int bd = adapter->bd_number;
+ if (bd >= ATL2_MAX_NIC) {
+ printk(KERN_NOTICE "Warning: no configuration for board #%i\n",
+ bd);
+ printk(KERN_NOTICE "Using defaults for all values\n");
+#ifndef module_param_array
+ bd = ATL2_MAX_NIC;
+#endif
+ }
+
+ /* Bytes of Transmit Memory */
+ opt.type = range_option;
+ opt.name = "Bytes of Transmit Memory";
+ opt.err = "using default of " __MODULE_STRING(ATL2_DEFAULT_TX_MEMSIZE);
+ opt.def = ATL2_DEFAULT_TX_MEMSIZE;
+ opt.arg.r.min = ATL2_MIN_TX_MEMSIZE;
+ opt.arg.r.max = ATL2_MAX_TX_MEMSIZE;
+#ifdef module_param_array
+ if (num_TxMemSize > bd) {
+#endif
+ val = TxMemSize[bd];
+ atl2_validate_option(&val, &opt);
+ adapter->txd_ring_size = ((u32) val) * 1024;
+#ifdef module_param_array
+ } else
+ adapter->txd_ring_size = ((u32)opt.def) * 1024;
+#endif
+ /* txs ring size: */
+ adapter->txs_ring_size = adapter->txd_ring_size / 128;
+ if (adapter->txs_ring_size > 160)
+ adapter->txs_ring_size = 160;
+
+ /* Receive Memory Block Count */
+ opt.type = range_option;
+ opt.name = "Number of receive memory block";
+ opt.err = "using default of " __MODULE_STRING(ATL2_DEFAULT_RXD_COUNT);
+ opt.def = ATL2_DEFAULT_RXD_COUNT;
+ opt.arg.r.min = ATL2_MIN_RXD_COUNT;
+ opt.arg.r.max = ATL2_MAX_RXD_COUNT;
+#ifdef module_param_array
+ if (num_RxMemBlock > bd) {
+#endif
+ val = RxMemBlock[bd];
+ atl2_validate_option(&val, &opt);
+ adapter->rxd_ring_size = (u32)val;
+ /* FIXME */
+ /* ((u16)val)&~1; */ /* even number */
+#ifdef module_param_array
+ } else
+ adapter->rxd_ring_size = (u32)opt.def;
+#endif
+ /* init RXD Flow control value */
+ adapter->hw.fc_rxd_hi = (adapter->rxd_ring_size / 8) * 7;
+ adapter->hw.fc_rxd_lo = (ATL2_MIN_RXD_COUNT / 8) >
+ (adapter->rxd_ring_size / 12) ? (ATL2_MIN_RXD_COUNT / 8) :
+ (adapter->rxd_ring_size / 12);
+
+ /* Interrupt Moderate Timer */
+ opt.type = range_option;
+ opt.name = "Interrupt Moderate Timer";
+ opt.err = "using default of " __MODULE_STRING(INT_MOD_DEFAULT_CNT);
+ opt.def = INT_MOD_DEFAULT_CNT;
+ opt.arg.r.min = INT_MOD_MIN_CNT;
+ opt.arg.r.max = INT_MOD_MAX_CNT;
+#ifdef module_param_array
+ if (num_IntModTimer > bd) {
+#endif
+ val = IntModTimer[bd];
+ atl2_validate_option(&val, &opt);
+ adapter->imt = (u16) val;
+#ifdef module_param_array
+ } else
+ adapter->imt = (u16)(opt.def);
+#endif
+ /* Flash Vendor */
+ opt.type = range_option;
+ opt.name = "SPI Flash Vendor";
+ opt.err = "using default of " __MODULE_STRING(FLASH_VENDOR_DEFAULT);
+ opt.def = FLASH_VENDOR_DEFAULT;
+ opt.arg.r.min = FLASH_VENDOR_MIN;
+ opt.arg.r.max = FLASH_VENDOR_MAX;
+#ifdef module_param_array
+ if (num_FlashVendor > bd) {
+#endif
+ val = FlashVendor[bd];
+ atl2_validate_option(&val, &opt);
+ adapter->hw.flash_vendor = (u8) val;
+#ifdef module_param_array
+ } else
+ adapter->hw.flash_vendor = (u8)(opt.def);
+#endif
+ /* MediaType */
+ opt.type = range_option;
+ opt.name = "Speed/Duplex Selection";
+ opt.err = "using default of " __MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR);
+ opt.def = MEDIA_TYPE_AUTO_SENSOR;
+ opt.arg.r.min = MEDIA_TYPE_AUTO_SENSOR;
+ opt.arg.r.max = MEDIA_TYPE_10M_HALF;
+#ifdef module_param_array
+ if (num_MediaType > bd) {
+#endif
+ val = MediaType[bd];
+ atl2_validate_option(&val, &opt);
+ adapter->hw.MediaType = (u16) val;
+#ifdef module_param_array
+ } else
+ adapter->hw.MediaType = (u16)(opt.def);
+#endif
+}
Code Review / kvmfornfv.git / blobdiff