![Matthew Wilcox](/assets/img/avatar_default.png)
Lockdep warns about the mdio_lock taken with interrupts enabled then later taken from interrupt context. Initially, I considered changing these to spin_lock_irq/spin_unlock_irq, but then I looked at atl1e_phy_init() and saw that it calls msleep(). Sleeping while holding a spinlock is not allowed either. In the probe path, we haven't registered the interrupt handler, so it can't poke at this card yet. It's before we call register_netdev(), so I don't think any other threads can reach this card either. If I'm right, we don't need a spinlock at all. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2599 lines
69 KiB
C
2599 lines
69 KiB
C
/*
|
|
* 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 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 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
|
|
*
|
|
* Returns the address of the device statistics structure.
|
|
* The statistics are actually updated from the timer callback.
|
|
*/
|
|
static struct net_device_stats *atl1e_get_stats(struct net_device *netdev)
|
|
{
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
struct atl1e_hw_stats *hw_stats = &adapter->hw_stats;
|
|
struct net_device_stats *net_stats = &adapter->net_stats;
|
|
|
|
net_stats->rx_packets = hw_stats->rx_ok;
|
|
net_stats->tx_packets = hw_stats->tx_ok;
|
|
net_stats->rx_bytes = hw_stats->rx_byte_cnt;
|
|
net_stats->tx_bytes = hw_stats->tx_byte_cnt;
|
|
net_stats->multicast = hw_stats->rx_mcast;
|
|
net_stats->collisions = hw_stats->tx_1_col +
|
|
hw_stats->tx_2_col * 2 +
|
|
hw_stats->tx_late_col + hw_stats->tx_abort_col;
|
|
|
|
net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err +
|
|
hw_stats->rx_len_err + hw_stats->rx_sz_ov +
|
|
hw_stats->rx_rrd_ov + hw_stats->rx_align_err;
|
|
net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov;
|
|
net_stats->rx_length_errors = hw_stats->rx_len_err;
|
|
net_stats->rx_crc_errors = hw_stats->rx_fcs_err;
|
|
net_stats->rx_frame_errors = hw_stats->rx_align_err;
|
|
net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov;
|
|
|
|
net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov;
|
|
|
|
net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col +
|
|
hw_stats->tx_underrun + hw_stats->tx_trunc;
|
|
net_stats->tx_fifo_errors = hw_stats->tx_underrun;
|
|
net_stats->tx_aborted_errors = hw_stats->tx_abort_col;
|
|
net_stats->tx_window_errors = hw_stats->tx_late_col;
|
|
|
|
return &adapter->net_stats;
|
|
}
|
|
|
|
static void atl1e_update_hw_stats(struct atl1e_adapter *adapter)
|
|
{
|
|
u16 hw_reg_addr = 0;
|
|
unsigned long *stats_item = NULL;
|
|
|
|
/* update rx status */
|
|
hw_reg_addr = REG_MAC_RX_STATUS_BIN;
|
|
stats_item = &adapter->hw_stats.rx_ok;
|
|
while (hw_reg_addr <= REG_MAC_RX_STATUS_END) {
|
|
*stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr);
|
|
stats_item++;
|
|
hw_reg_addr += 4;
|
|
}
|
|
/* update tx status */
|
|
hw_reg_addr = REG_MAC_TX_STATUS_BIN;
|
|
stats_item = &adapter->hw_stats.tx_ok;
|
|
while (hw_reg_addr <= REG_MAC_TX_STATUS_END) {
|
|
*stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr);
|
|
stats_item++;
|
|
hw_reg_addr += 4;
|
|
}
|
|
}
|
|
|
|
static inline void atl1e_clear_phy_int(struct atl1e_adapter *adapter)
|
|
{
|
|
u16 phy_data;
|
|
|
|
spin_lock(&adapter->mdio_lock);
|
|
atl1e_read_phy_reg(&adapter->hw, MII_INT_STATUS, &phy_data);
|
|
spin_unlock(&adapter->mdio_lock);
|
|
}
|
|
|
|
static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter)
|
|
{
|
|
struct atl1e_tx_ring *tx_ring = (struct atl1e_tx_ring *)
|
|
&adapter->tx_ring;
|
|
struct atl1e_tx_buffer *tx_buffer = NULL;
|
|
u16 hw_next_to_clean = AT_READ_REGW(&adapter->hw, REG_TPD_CONS_IDX);
|
|
u16 next_to_clean = atomic_read(&tx_ring->next_to_clean);
|
|
|
|
while (next_to_clean != hw_next_to_clean) {
|
|
tx_buffer = &tx_ring->tx_buffer[next_to_clean];
|
|
if (tx_buffer->dma) {
|
|
pci_unmap_page(adapter->pdev, tx_buffer->dma,
|
|
tx_buffer->length, PCI_DMA_TODEVICE);
|
|
tx_buffer->dma = 0;
|
|
}
|
|
|
|
if (tx_buffer->skb) {
|
|
dev_kfree_skb_irq(tx_buffer->skb);
|
|
tx_buffer->skb = NULL;
|
|
}
|
|
|
|
if (++next_to_clean == tx_ring->count)
|
|
next_to_clean = 0;
|
|
}
|
|
|
|
atomic_set(&tx_ring->next_to_clean, next_to_clean);
|
|
|
|
if (netif_queue_stopped(adapter->netdev) &&
|
|
netif_carrier_ok(adapter->netdev)) {
|
|
netif_wake_queue(adapter->netdev);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* atl1e_intr - Interrupt Handler
|
|
* @irq: interrupt number
|
|
* @data: pointer to a network interface device structure
|
|
* @pt_regs: CPU registers structure
|
|
*/
|
|
static irqreturn_t atl1e_intr(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct atl1e_hw *hw = &adapter->hw;
|
|
int max_ints = AT_MAX_INT_WORK;
|
|
int handled = IRQ_NONE;
|
|
u32 status;
|
|
|
|
do {
|
|
status = AT_READ_REG(hw, REG_ISR);
|
|
if ((status & IMR_NORMAL_MASK) == 0 ||
|
|
(status & ISR_DIS_INT) != 0) {
|
|
if (max_ints != AT_MAX_INT_WORK)
|
|
handled = IRQ_HANDLED;
|
|
break;
|
|
}
|
|
/* link event */
|
|
if (status & ISR_GPHY)
|
|
atl1e_clear_phy_int(adapter);
|
|
/* Ack ISR */
|
|
AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT);
|
|
|
|
handled = IRQ_HANDLED;
|
|
/* check if PCIE PHY Link down */
|
|
if (status & ISR_PHY_LINKDOWN) {
|
|
dev_err(&pdev->dev,
|
|
"pcie phy linkdown %x\n", status);
|
|
if (netif_running(adapter->netdev)) {
|
|
/* reset MAC */
|
|
atl1e_irq_reset(adapter);
|
|
schedule_work(&adapter->reset_task);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* check if DMA read/write error */
|
|
if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
|
|
dev_err(&pdev->dev,
|
|
"PCIE DMA RW error (status = 0x%x)\n",
|
|
status);
|
|
atl1e_irq_reset(adapter);
|
|
schedule_work(&adapter->reset_task);
|
|
break;
|
|
}
|
|
|
|
if (status & ISR_SMB)
|
|
atl1e_update_hw_stats(adapter);
|
|
|
|
/* link event */
|
|
if (status & (ISR_GPHY | ISR_MANUAL)) {
|
|
adapter->net_stats.tx_carrier_errors++;
|
|
atl1e_link_chg_event(adapter);
|
|
break;
|
|
}
|
|
|
|
/* transmit event */
|
|
if (status & ISR_TX_EVENT)
|
|
atl1e_clean_tx_irq(adapter);
|
|
|
|
if (status & ISR_RX_EVENT) {
|
|
/*
|
|
* disable rx interrupts, without
|
|
* the synchronize_irq bit
|
|
*/
|
|
AT_WRITE_REG(hw, REG_IMR,
|
|
IMR_NORMAL_MASK & ~ISR_RX_EVENT);
|
|
AT_WRITE_FLUSH(hw);
|
|
if (likely(netif_rx_schedule_prep(netdev,
|
|
&adapter->napi)))
|
|
__netif_rx_schedule(netdev, &adapter->napi);
|
|
}
|
|
} while (--max_ints > 0);
|
|
/* re-enable Interrupt*/
|
|
AT_WRITE_REG(&adapter->hw, REG_ISR, 0);
|
|
|
|
return handled;
|
|
}
|
|
|
|
static inline void atl1e_rx_checksum(struct atl1e_adapter *adapter,
|
|
struct sk_buff *skb, struct atl1e_recv_ret_status *prrs)
|
|
{
|
|
u8 *packet = (u8 *)(prrs + 1);
|
|
struct iphdr *iph;
|
|
u16 head_len = ETH_HLEN;
|
|
u16 pkt_flags;
|
|
u16 err_flags;
|
|
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
pkt_flags = prrs->pkt_flag;
|
|
err_flags = prrs->err_flag;
|
|
if (((pkt_flags & RRS_IS_IPV4) || (pkt_flags & RRS_IS_IPV6)) &&
|
|
((pkt_flags & RRS_IS_TCP) || (pkt_flags & RRS_IS_UDP))) {
|
|
if (pkt_flags & RRS_IS_IPV4) {
|
|
if (pkt_flags & RRS_IS_802_3)
|
|
head_len += 8;
|
|
iph = (struct iphdr *) (packet + head_len);
|
|
if (iph->frag_off != 0 && !(pkt_flags & RRS_IS_IP_DF))
|
|
goto hw_xsum;
|
|
}
|
|
if (!(err_flags & (RRS_ERR_IP_CSUM | RRS_ERR_L4_CSUM))) {
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
return;
|
|
}
|
|
}
|
|
|
|
hw_xsum :
|
|
return;
|
|
}
|
|
|
|
static struct atl1e_rx_page *atl1e_get_rx_page(struct atl1e_adapter *adapter,
|
|
u8 que)
|
|
{
|
|
struct atl1e_rx_page_desc *rx_page_desc =
|
|
(struct atl1e_rx_page_desc *) adapter->rx_ring.rx_page_desc;
|
|
u8 rx_using = rx_page_desc[que].rx_using;
|
|
|
|
return (struct atl1e_rx_page *)&(rx_page_desc[que].rx_page[rx_using]);
|
|
}
|
|
|
|
static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que,
|
|
int *work_done, int work_to_do)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct atl1e_rx_ring *rx_ring = (struct atl1e_rx_ring *)
|
|
&adapter->rx_ring;
|
|
struct atl1e_rx_page_desc *rx_page_desc =
|
|
(struct atl1e_rx_page_desc *) rx_ring->rx_page_desc;
|
|
struct sk_buff *skb = NULL;
|
|
struct atl1e_rx_page *rx_page = atl1e_get_rx_page(adapter, que);
|
|
u32 packet_size, write_offset;
|
|
struct atl1e_recv_ret_status *prrs;
|
|
|
|
write_offset = *(rx_page->write_offset_addr);
|
|
if (likely(rx_page->read_offset < write_offset)) {
|
|
do {
|
|
if (*work_done >= work_to_do)
|
|
break;
|
|
(*work_done)++;
|
|
/* get new packet's rrs */
|
|
prrs = (struct atl1e_recv_ret_status *) (rx_page->addr +
|
|
rx_page->read_offset);
|
|
/* check sequence number */
|
|
if (prrs->seq_num != rx_page_desc[que].rx_nxseq) {
|
|
dev_err(&pdev->dev,
|
|
"rx sequence number"
|
|
" error (rx=%d) (expect=%d)\n",
|
|
prrs->seq_num,
|
|
rx_page_desc[que].rx_nxseq);
|
|
rx_page_desc[que].rx_nxseq++;
|
|
/* just for debug use */
|
|
AT_WRITE_REG(&adapter->hw, REG_DEBUG_DATA0,
|
|
(((u32)prrs->seq_num) << 16) |
|
|
rx_page_desc[que].rx_nxseq);
|
|
goto fatal_err;
|
|
}
|
|
rx_page_desc[que].rx_nxseq++;
|
|
|
|
/* error packet */
|
|
if (prrs->pkt_flag & RRS_IS_ERR_FRAME) {
|
|
if (prrs->err_flag & (RRS_ERR_BAD_CRC |
|
|
RRS_ERR_DRIBBLE | RRS_ERR_CODE |
|
|
RRS_ERR_TRUNC)) {
|
|
/* hardware error, discard this packet*/
|
|
dev_err(&pdev->dev,
|
|
"rx packet desc error %x\n",
|
|
*((u32 *)prrs + 1));
|
|
goto skip_pkt;
|
|
}
|
|
}
|
|
|
|
packet_size = ((prrs->word1 >> RRS_PKT_SIZE_SHIFT) &
|
|
RRS_PKT_SIZE_MASK) - 4; /* CRC */
|
|
skb = netdev_alloc_skb(netdev,
|
|
packet_size + NET_IP_ALIGN);
|
|
if (skb == NULL) {
|
|
dev_warn(&pdev->dev, "%s: Memory squeeze,"
|
|
"deferring packet.\n", netdev->name);
|
|
goto skip_pkt;
|
|
}
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
skb->dev = netdev;
|
|
memcpy(skb->data, (u8 *)(prrs + 1), packet_size);
|
|
skb_put(skb, packet_size);
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
atl1e_rx_checksum(adapter, skb, prrs);
|
|
|
|
if (unlikely(adapter->vlgrp &&
|
|
(prrs->pkt_flag & RRS_IS_VLAN_TAG))) {
|
|
u16 vlan_tag = (prrs->vtag >> 4) |
|
|
((prrs->vtag & 7) << 13) |
|
|
((prrs->vtag & 8) << 9);
|
|
dev_dbg(&pdev->dev,
|
|
"RXD VLAN TAG<RRD>=0x%04x\n",
|
|
prrs->vtag);
|
|
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
|
|
vlan_tag);
|
|
} else {
|
|
netif_receive_skb(skb);
|
|
}
|
|
|
|
netdev->last_rx = jiffies;
|
|
skip_pkt:
|
|
/* skip current packet whether it's ok or not. */
|
|
rx_page->read_offset +=
|
|
(((u32)((prrs->word1 >> RRS_PKT_SIZE_SHIFT) &
|
|
RRS_PKT_SIZE_MASK) +
|
|
sizeof(struct atl1e_recv_ret_status) + 31) &
|
|
0xFFFFFFE0);
|
|
|
|
if (rx_page->read_offset >= rx_ring->page_size) {
|
|
/* mark this page clean */
|
|
u16 reg_addr;
|
|
u8 rx_using;
|
|
|
|
rx_page->read_offset =
|
|
*(rx_page->write_offset_addr) = 0;
|
|
rx_using = rx_page_desc[que].rx_using;
|
|
reg_addr =
|
|
atl1e_rx_page_vld_regs[que][rx_using];
|
|
AT_WRITE_REGB(&adapter->hw, reg_addr, 1);
|
|
rx_page_desc[que].rx_using ^= 1;
|
|
rx_page = atl1e_get_rx_page(adapter, que);
|
|
}
|
|
write_offset = *(rx_page->write_offset_addr);
|
|
} while (rx_page->read_offset < write_offset);
|
|
}
|
|
|
|
return;
|
|
|
|
fatal_err:
|
|
if (!test_bit(__AT_DOWN, &adapter->flags))
|
|
schedule_work(&adapter->reset_task);
|
|
}
|
|
|
|
/*
|
|
* atl1e_clean - NAPI Rx polling callback
|
|
* @adapter: board private structure
|
|
*/
|
|
static int atl1e_clean(struct napi_struct *napi, int budget)
|
|
{
|
|
struct atl1e_adapter *adapter =
|
|
container_of(napi, struct atl1e_adapter, napi);
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
u32 imr_data;
|
|
int work_done = 0;
|
|
|
|
/* Keep link state information with original netdev */
|
|
if (!netif_carrier_ok(adapter->netdev))
|
|
goto quit_polling;
|
|
|
|
atl1e_clean_rx_irq(adapter, 0, &work_done, budget);
|
|
|
|
/* If no Tx and not enough Rx work done, exit the polling mode */
|
|
if (work_done < budget) {
|
|
quit_polling:
|
|
netif_rx_complete(netdev, napi);
|
|
imr_data = AT_READ_REG(&adapter->hw, REG_IMR);
|
|
AT_WRITE_REG(&adapter->hw, REG_IMR, imr_data | ISR_RX_EVENT);
|
|
/* test debug */
|
|
if (test_bit(__AT_DOWN, &adapter->flags)) {
|
|
atomic_dec(&adapter->irq_sem);
|
|
dev_err(&pdev->dev,
|
|
"atl1e_clean is called when AT_DOWN\n");
|
|
}
|
|
/* reenable RX intr */
|
|
/*atl1e_irq_enable(adapter); */
|
|
|
|
}
|
|
return work_done;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
|
|
/*
|
|
* Polling 'interrupt' - used by things like netconsole to send skbs
|
|
* without having to re-enable interrupts. It's not called while
|
|
* the interrupt routine is executing.
|
|
*/
|
|
static void atl1e_netpoll(struct net_device *netdev)
|
|
{
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
|
|
disable_irq(adapter->pdev->irq);
|
|
atl1e_intr(adapter->pdev->irq, netdev);
|
|
enable_irq(adapter->pdev->irq);
|
|
}
|
|
#endif
|
|
|
|
static inline u16 atl1e_tpd_avail(struct atl1e_adapter *adapter)
|
|
{
|
|
struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
|
|
u16 next_to_use = 0;
|
|
u16 next_to_clean = 0;
|
|
|
|
next_to_clean = atomic_read(&tx_ring->next_to_clean);
|
|
next_to_use = tx_ring->next_to_use;
|
|
|
|
return (u16)(next_to_clean > next_to_use) ?
|
|
(next_to_clean - next_to_use - 1) :
|
|
(tx_ring->count + next_to_clean - next_to_use - 1);
|
|
}
|
|
|
|
/*
|
|
* get next usable tpd
|
|
* Note: should call atl1e_tdp_avail to make sure
|
|
* there is enough tpd to use
|
|
*/
|
|
static struct atl1e_tpd_desc *atl1e_get_tpd(struct atl1e_adapter *adapter)
|
|
{
|
|
struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
|
|
u16 next_to_use = 0;
|
|
|
|
next_to_use = tx_ring->next_to_use;
|
|
if (++tx_ring->next_to_use == tx_ring->count)
|
|
tx_ring->next_to_use = 0;
|
|
|
|
memset(&tx_ring->desc[next_to_use], 0, sizeof(struct atl1e_tpd_desc));
|
|
return (struct atl1e_tpd_desc *)&tx_ring->desc[next_to_use];
|
|
}
|
|
|
|
static struct atl1e_tx_buffer *
|
|
atl1e_get_tx_buffer(struct atl1e_adapter *adapter, struct atl1e_tpd_desc *tpd)
|
|
{
|
|
struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
|
|
|
|
return &tx_ring->tx_buffer[tpd - tx_ring->desc];
|
|
}
|
|
|
|
/* Calculate the transmit packet descript needed*/
|
|
static u16 atl1e_cal_tdp_req(const struct sk_buff *skb)
|
|
{
|
|
int i = 0;
|
|
u16 tpd_req = 1;
|
|
u16 fg_size = 0;
|
|
u16 proto_hdr_len = 0;
|
|
|
|
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
|
|
fg_size = skb_shinfo(skb)->frags[i].size;
|
|
tpd_req += ((fg_size + MAX_TX_BUF_LEN - 1) >> MAX_TX_BUF_SHIFT);
|
|
}
|
|
|
|
if (skb_is_gso(skb)) {
|
|
if (skb->protocol == ntohs(ETH_P_IP) ||
|
|
(skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6)) {
|
|
proto_hdr_len = skb_transport_offset(skb) +
|
|
tcp_hdrlen(skb);
|
|
if (proto_hdr_len < skb_headlen(skb)) {
|
|
tpd_req += ((skb_headlen(skb) - proto_hdr_len +
|
|
MAX_TX_BUF_LEN - 1) >>
|
|
MAX_TX_BUF_SHIFT);
|
|
}
|
|
}
|
|
|
|
}
|
|
return tpd_req;
|
|
}
|
|
|
|
static int atl1e_tso_csum(struct atl1e_adapter *adapter,
|
|
struct sk_buff *skb, struct atl1e_tpd_desc *tpd)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
u8 hdr_len;
|
|
u32 real_len;
|
|
unsigned short offload_type;
|
|
int err;
|
|
|
|
if (skb_is_gso(skb)) {
|
|
if (skb_header_cloned(skb)) {
|
|
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
|
|
if (unlikely(err))
|
|
return -1;
|
|
}
|
|
offload_type = skb_shinfo(skb)->gso_type;
|
|
|
|
if (offload_type & SKB_GSO_TCPV4) {
|
|
real_len = (((unsigned char *)ip_hdr(skb) - skb->data)
|
|
+ ntohs(ip_hdr(skb)->tot_len));
|
|
|
|
if (real_len < skb->len)
|
|
pskb_trim(skb, real_len);
|
|
|
|
hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
|
|
if (unlikely(skb->len == hdr_len)) {
|
|
/* only xsum need */
|
|
dev_warn(&pdev->dev,
|
|
"IPV4 tso with zero data??\n");
|
|
goto check_sum;
|
|
} else {
|
|
ip_hdr(skb)->check = 0;
|
|
ip_hdr(skb)->tot_len = 0;
|
|
tcp_hdr(skb)->check = ~csum_tcpudp_magic(
|
|
ip_hdr(skb)->saddr,
|
|
ip_hdr(skb)->daddr,
|
|
0, IPPROTO_TCP, 0);
|
|
tpd->word3 |= (ip_hdr(skb)->ihl &
|
|
TDP_V4_IPHL_MASK) <<
|
|
TPD_V4_IPHL_SHIFT;
|
|
tpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
|
|
TPD_TCPHDRLEN_MASK) <<
|
|
TPD_TCPHDRLEN_SHIFT;
|
|
tpd->word3 |= ((skb_shinfo(skb)->gso_size) &
|
|
TPD_MSS_MASK) << TPD_MSS_SHIFT;
|
|
tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (offload_type & SKB_GSO_TCPV6) {
|
|
real_len = (((unsigned char *)ipv6_hdr(skb) - skb->data)
|
|
+ ntohs(ipv6_hdr(skb)->payload_len));
|
|
if (real_len < skb->len)
|
|
pskb_trim(skb, real_len);
|
|
|
|
/* check payload == 0 byte ? */
|
|
hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
|
|
if (unlikely(skb->len == hdr_len)) {
|
|
/* only xsum need */
|
|
dev_warn(&pdev->dev,
|
|
"IPV6 tso with zero data??\n");
|
|
goto check_sum;
|
|
} else {
|
|
tcp_hdr(skb)->check = ~csum_ipv6_magic(
|
|
&ipv6_hdr(skb)->saddr,
|
|
&ipv6_hdr(skb)->daddr,
|
|
0, IPPROTO_TCP, 0);
|
|
tpd->word3 |= 1 << TPD_IP_VERSION_SHIFT;
|
|
hdr_len >>= 1;
|
|
tpd->word3 |= (hdr_len & TPD_V6_IPHLLO_MASK) <<
|
|
TPD_V6_IPHLLO_SHIFT;
|
|
tpd->word3 |= ((hdr_len >> 3) &
|
|
TPD_V6_IPHLHI_MASK) <<
|
|
TPD_V6_IPHLHI_SHIFT;
|
|
tpd->word3 |= (tcp_hdrlen(skb) >> 2 &
|
|
TPD_TCPHDRLEN_MASK) <<
|
|
TPD_TCPHDRLEN_SHIFT;
|
|
tpd->word3 |= ((skb_shinfo(skb)->gso_size) &
|
|
TPD_MSS_MASK) << TPD_MSS_SHIFT;
|
|
tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
check_sum:
|
|
if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
|
|
u8 css, cso;
|
|
|
|
cso = skb_transport_offset(skb);
|
|
if (unlikely(cso & 0x1)) {
|
|
dev_err(&adapter->pdev->dev,
|
|
"pay load offset should not ant event number\n");
|
|
return -1;
|
|
} else {
|
|
css = cso + skb->csum_offset;
|
|
tpd->word3 |= (cso & TPD_PLOADOFFSET_MASK) <<
|
|
TPD_PLOADOFFSET_SHIFT;
|
|
tpd->word3 |= (css & TPD_CCSUMOFFSET_MASK) <<
|
|
TPD_CCSUMOFFSET_SHIFT;
|
|
tpd->word3 |= 1 << TPD_CC_SEGMENT_EN_SHIFT;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void atl1e_tx_map(struct atl1e_adapter *adapter,
|
|
struct sk_buff *skb, struct atl1e_tpd_desc *tpd)
|
|
{
|
|
struct atl1e_tpd_desc *use_tpd = NULL;
|
|
struct atl1e_tx_buffer *tx_buffer = NULL;
|
|
u16 buf_len = skb->len - skb->data_len;
|
|
u16 map_len = 0;
|
|
u16 mapped_len = 0;
|
|
u16 hdr_len = 0;
|
|
u16 nr_frags;
|
|
u16 f;
|
|
int segment;
|
|
|
|
nr_frags = skb_shinfo(skb)->nr_frags;
|
|
segment = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
|
|
if (segment) {
|
|
/* TSO */
|
|
map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
|
|
use_tpd = tpd;
|
|
|
|
tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd);
|
|
tx_buffer->length = map_len;
|
|
tx_buffer->dma = pci_map_single(adapter->pdev,
|
|
skb->data, hdr_len, PCI_DMA_TODEVICE);
|
|
mapped_len += map_len;
|
|
use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
|
|
use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) |
|
|
((cpu_to_le32(tx_buffer->length) &
|
|
TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT);
|
|
}
|
|
|
|
while (mapped_len < buf_len) {
|
|
/* mapped_len == 0, means we should use the first tpd,
|
|
which is given by caller */
|
|
if (mapped_len == 0) {
|
|
use_tpd = tpd;
|
|
} else {
|
|
use_tpd = atl1e_get_tpd(adapter);
|
|
memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc));
|
|
}
|
|
tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd);
|
|
tx_buffer->skb = NULL;
|
|
|
|
tx_buffer->length = map_len =
|
|
((buf_len - mapped_len) >= MAX_TX_BUF_LEN) ?
|
|
MAX_TX_BUF_LEN : (buf_len - mapped_len);
|
|
tx_buffer->dma =
|
|
pci_map_single(adapter->pdev, skb->data + mapped_len,
|
|
map_len, PCI_DMA_TODEVICE);
|
|
mapped_len += map_len;
|
|
use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
|
|
use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) |
|
|
((cpu_to_le32(tx_buffer->length) &
|
|
TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT);
|
|
}
|
|
|
|
for (f = 0; f < nr_frags; f++) {
|
|
struct skb_frag_struct *frag;
|
|
u16 i;
|
|
u16 seg_num;
|
|
|
|
frag = &skb_shinfo(skb)->frags[f];
|
|
buf_len = frag->size;
|
|
|
|
seg_num = (buf_len + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN;
|
|
for (i = 0; i < seg_num; i++) {
|
|
use_tpd = atl1e_get_tpd(adapter);
|
|
memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc));
|
|
|
|
tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd);
|
|
if (tx_buffer->skb)
|
|
BUG();
|
|
|
|
tx_buffer->skb = NULL;
|
|
tx_buffer->length =
|
|
(buf_len > MAX_TX_BUF_LEN) ?
|
|
MAX_TX_BUF_LEN : buf_len;
|
|
buf_len -= tx_buffer->length;
|
|
|
|
tx_buffer->dma =
|
|
pci_map_page(adapter->pdev, frag->page,
|
|
frag->page_offset +
|
|
(i * MAX_TX_BUF_LEN),
|
|
tx_buffer->length,
|
|
PCI_DMA_TODEVICE);
|
|
use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
|
|
use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) |
|
|
((cpu_to_le32(tx_buffer->length) &
|
|
TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT);
|
|
}
|
|
}
|
|
|
|
if ((tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK)
|
|
/* note this one is a tcp header */
|
|
tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
|
|
/* The last tpd */
|
|
|
|
use_tpd->word3 |= 1 << TPD_EOP_SHIFT;
|
|
/* The last buffer info contain the skb address,
|
|
so it will be free after unmap */
|
|
tx_buffer->skb = skb;
|
|
}
|
|
|
|
static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count,
|
|
struct atl1e_tpd_desc *tpd)
|
|
{
|
|
struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64). */
|
|
wmb();
|
|
AT_WRITE_REG(&adapter->hw, REG_MB_TPD_PROD_IDX, tx_ring->next_to_use);
|
|
}
|
|
|
|
static int atl1e_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
unsigned long flags;
|
|
u16 tpd_req = 1;
|
|
struct atl1e_tpd_desc *tpd;
|
|
|
|
if (test_bit(__AT_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;
|
|
}
|
|
tpd_req = atl1e_cal_tdp_req(skb);
|
|
if (!spin_trylock_irqsave(&adapter->tx_lock, flags))
|
|
return NETDEV_TX_LOCKED;
|
|
|
|
if (atl1e_tpd_avail(adapter) < tpd_req) {
|
|
/* no enough descriptor, just stop queue */
|
|
netif_stop_queue(netdev);
|
|
spin_unlock_irqrestore(&adapter->tx_lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
tpd = atl1e_get_tpd(adapter);
|
|
|
|
if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
|
|
u16 vlan_tag = vlan_tx_tag_get(skb);
|
|
u16 atl1e_vlan_tag;
|
|
|
|
tpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
|
|
AT_VLAN_TAG_TO_TPD_TAG(vlan_tag, atl1e_vlan_tag);
|
|
tpd->word2 |= (atl1e_vlan_tag & TPD_VLANTAG_MASK) <<
|
|
TPD_VLAN_SHIFT;
|
|
}
|
|
|
|
if (skb->protocol == ntohs(ETH_P_8021Q))
|
|
tpd->word3 |= 1 << TPD_VL_TAGGED_SHIFT;
|
|
|
|
if (skb_network_offset(skb) != ETH_HLEN)
|
|
tpd->word3 |= 1 << TPD_ETHTYPE_SHIFT; /* 802.3 frame */
|
|
|
|
/* do TSO and check sum */
|
|
if (atl1e_tso_csum(adapter, skb, tpd) != 0) {
|
|
spin_unlock_irqrestore(&adapter->tx_lock, flags);
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
atl1e_tx_map(adapter, skb, tpd);
|
|
atl1e_tx_queue(adapter, tpd_req, tpd);
|
|
|
|
netdev->trans_start = jiffies;
|
|
spin_unlock_irqrestore(&adapter->tx_lock, flags);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static void atl1e_free_irq(struct atl1e_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
free_irq(adapter->pdev->irq, netdev);
|
|
|
|
if (adapter->have_msi)
|
|
pci_disable_msi(adapter->pdev);
|
|
}
|
|
|
|
static int atl1e_request_irq(struct atl1e_adapter *adapter)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct net_device *netdev = adapter->netdev;
|
|
int flags = 0;
|
|
int err = 0;
|
|
|
|
adapter->have_msi = true;
|
|
err = pci_enable_msi(adapter->pdev);
|
|
if (err) {
|
|
dev_dbg(&pdev->dev,
|
|
"Unable to allocate MSI interrupt Error: %d\n", err);
|
|
adapter->have_msi = false;
|
|
} else
|
|
netdev->irq = pdev->irq;
|
|
|
|
|
|
if (!adapter->have_msi)
|
|
flags |= IRQF_SHARED;
|
|
err = request_irq(adapter->pdev->irq, &atl1e_intr, flags,
|
|
netdev->name, netdev);
|
|
if (err) {
|
|
dev_dbg(&pdev->dev,
|
|
"Unable to allocate interrupt Error: %d\n", err);
|
|
if (adapter->have_msi)
|
|
pci_disable_msi(adapter->pdev);
|
|
return err;
|
|
}
|
|
dev_dbg(&pdev->dev, "atl1e_request_irq OK\n");
|
|
return err;
|
|
}
|
|
|
|
int atl1e_up(struct atl1e_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int err = 0;
|
|
u32 val;
|
|
|
|
/* hardware has been reset, we need to reload some things */
|
|
err = atl1e_init_hw(&adapter->hw);
|
|
if (err) {
|
|
err = -EIO;
|
|
return err;
|
|
}
|
|
atl1e_init_ring_ptrs(adapter);
|
|
atl1e_set_multi(netdev);
|
|
atl1e_restore_vlan(adapter);
|
|
|
|
if (atl1e_configure(adapter)) {
|
|
err = -EIO;
|
|
goto err_up;
|
|
}
|
|
|
|
clear_bit(__AT_DOWN, &adapter->flags);
|
|
napi_enable(&adapter->napi);
|
|
atl1e_irq_enable(adapter);
|
|
val = AT_READ_REG(&adapter->hw, REG_MASTER_CTRL);
|
|
AT_WRITE_REG(&adapter->hw, REG_MASTER_CTRL,
|
|
val | MASTER_CTRL_MANUAL_INT);
|
|
|
|
err_up:
|
|
return err;
|
|
}
|
|
|
|
void atl1e_down(struct atl1e_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(__AT_DOWN, &adapter->flags);
|
|
|
|
#ifdef NETIF_F_LLTX
|
|
netif_stop_queue(netdev);
|
|
#else
|
|
netif_tx_disable(netdev);
|
|
#endif
|
|
|
|
/* reset MAC to disable all RX/TX */
|
|
atl1e_reset_hw(&adapter->hw);
|
|
msleep(1);
|
|
|
|
napi_disable(&adapter->napi);
|
|
atl1e_del_timer(adapter);
|
|
atl1e_irq_disable(adapter);
|
|
|
|
netif_carrier_off(netdev);
|
|
adapter->link_speed = SPEED_0;
|
|
adapter->link_duplex = -1;
|
|
atl1e_clean_tx_ring(adapter);
|
|
atl1e_clean_rx_ring(adapter);
|
|
}
|
|
|
|
/*
|
|
* atl1e_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 atl1e_open(struct net_device *netdev)
|
|
{
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
int err;
|
|
|
|
/* disallow open during test */
|
|
if (test_bit(__AT_TESTING, &adapter->flags))
|
|
return -EBUSY;
|
|
|
|
/* allocate rx/tx dma buffer & descriptors */
|
|
atl1e_init_ring_resources(adapter);
|
|
err = atl1e_setup_ring_resources(adapter);
|
|
if (unlikely(err))
|
|
return err;
|
|
|
|
err = atl1e_request_irq(adapter);
|
|
if (unlikely(err))
|
|
goto err_req_irq;
|
|
|
|
err = atl1e_up(adapter);
|
|
if (unlikely(err))
|
|
goto err_up;
|
|
|
|
return 0;
|
|
|
|
err_up:
|
|
atl1e_free_irq(adapter);
|
|
err_req_irq:
|
|
atl1e_free_ring_resources(adapter);
|
|
atl1e_reset_hw(&adapter->hw);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* atl1e_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 atl1e_close(struct net_device *netdev)
|
|
{
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
|
|
WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
|
|
atl1e_down(adapter);
|
|
atl1e_free_irq(adapter);
|
|
atl1e_free_ring_resources(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
struct atl1e_hw *hw = &adapter->hw;
|
|
u32 ctrl = 0;
|
|
u32 mac_ctrl_data = 0;
|
|
u32 wol_ctrl_data = 0;
|
|
u16 mii_advertise_data = 0;
|
|
u16 mii_bmsr_data = 0;
|
|
u16 mii_intr_status_data = 0;
|
|
u32 wufc = adapter->wol;
|
|
u32 i;
|
|
#ifdef CONFIG_PM
|
|
int retval = 0;
|
|
#endif
|
|
|
|
if (netif_running(netdev)) {
|
|
WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
|
|
atl1e_down(adapter);
|
|
}
|
|
netif_device_detach(netdev);
|
|
|
|
#ifdef CONFIG_PM
|
|
retval = pci_save_state(pdev);
|
|
if (retval)
|
|
return retval;
|
|
#endif
|
|
|
|
if (wufc) {
|
|
/* get link status */
|
|
atl1e_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data);
|
|
atl1e_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data);
|
|
|
|
mii_advertise_data = MII_AR_10T_HD_CAPS;
|
|
|
|
if ((atl1e_write_phy_reg(hw, MII_AT001_CR, 0) != 0) ||
|
|
(atl1e_write_phy_reg(hw,
|
|
MII_ADVERTISE, mii_advertise_data) != 0) ||
|
|
(atl1e_phy_commit(hw)) != 0) {
|
|
dev_dbg(&pdev->dev, "set phy register failed\n");
|
|
goto wol_dis;
|
|
}
|
|
|
|
hw->phy_configured = false; /* re-init PHY when resume */
|
|
|
|
/* turn on magic packet wol */
|
|
if (wufc & AT_WUFC_MAG)
|
|
wol_ctrl_data |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
|
|
|
|
if (wufc & AT_WUFC_LNKC) {
|
|
/* if orignal link status is link, just wait for retrive link */
|
|
if (mii_bmsr_data & BMSR_LSTATUS) {
|
|
for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) {
|
|
msleep(100);
|
|
atl1e_read_phy_reg(hw, MII_BMSR,
|
|
(u16 *)&mii_bmsr_data);
|
|
if (mii_bmsr_data & BMSR_LSTATUS)
|
|
break;
|
|
}
|
|
|
|
if ((mii_bmsr_data & BMSR_LSTATUS) == 0)
|
|
dev_dbg(&pdev->dev,
|
|
"%s: Link may change"
|
|
"when suspend\n",
|
|
atl1e_driver_name);
|
|
}
|
|
wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN;
|
|
/* only link up can wake up */
|
|
if (atl1e_write_phy_reg(hw, MII_INT_CTRL, 0x400) != 0) {
|
|
dev_dbg(&pdev->dev, "%s: read write phy "
|
|
"register failed.\n",
|
|
atl1e_driver_name);
|
|
goto wol_dis;
|
|
}
|
|
}
|
|
/* clear phy interrupt */
|
|
atl1e_read_phy_reg(hw, MII_INT_STATUS, &mii_intr_status_data);
|
|
/* Config MAC Ctrl register */
|
|
mac_ctrl_data = MAC_CTRL_RX_EN;
|
|
/* set to 10/100M halt duplex */
|
|
mac_ctrl_data |= MAC_CTRL_SPEED_10_100 << MAC_CTRL_SPEED_SHIFT;
|
|
mac_ctrl_data |= (((u32)adapter->hw.preamble_len &
|
|
MAC_CTRL_PRMLEN_MASK) <<
|
|
MAC_CTRL_PRMLEN_SHIFT);
|
|
|
|
if (adapter->vlgrp)
|
|
mac_ctrl_data |= MAC_CTRL_RMV_VLAN;
|
|
|
|
/* magic packet maybe Broadcast&multicast&Unicast frame */
|
|
if (wufc & AT_WUFC_MAG)
|
|
mac_ctrl_data |= MAC_CTRL_BC_EN;
|
|
|
|
dev_dbg(&pdev->dev,
|
|
"%s: suspend MAC=0x%x\n",
|
|
atl1e_driver_name, mac_ctrl_data);
|
|
|
|
AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data);
|
|
AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
|
|
/* pcie patch */
|
|
ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC);
|
|
ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
|
|
AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
|
|
pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
|
|
goto suspend_exit;
|
|
}
|
|
wol_dis:
|
|
|
|
/* WOL disabled */
|
|
AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
|
|
|
|
/* pcie patch */
|
|
ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC);
|
|
ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
|
|
AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
|
|
|
|
atl1e_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))
|
|
atl1e_free_irq(adapter);
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, state));
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int atl1e_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct atl1e_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) {
|
|
dev_err(&pdev->dev, "ATL1e: Cannot enable PCI"
|
|
" device from suspend\n");
|
|
return err;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
AT_READ_REG(&adapter->hw, REG_WOL_CTRL); /* clear WOL status */
|
|
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
|
|
AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0);
|
|
|
|
if (netif_running(netdev)) {
|
|
err = atl1e_request_irq(adapter);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
atl1e_reset_hw(&adapter->hw);
|
|
|
|
if (netif_running(netdev))
|
|
atl1e_up(adapter);
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void atl1e_shutdown(struct pci_dev *pdev)
|
|
{
|
|
atl1e_suspend(pdev, PMSG_SUSPEND);
|
|
}
|
|
|
|
static int atl1e_init_netdev(struct net_device *netdev, struct pci_dev *pdev)
|
|
{
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
pci_set_drvdata(pdev, netdev);
|
|
|
|
netdev->irq = pdev->irq;
|
|
netdev->open = &atl1e_open;
|
|
netdev->stop = &atl1e_close;
|
|
netdev->hard_start_xmit = &atl1e_xmit_frame;
|
|
netdev->get_stats = &atl1e_get_stats;
|
|
netdev->set_multicast_list = &atl1e_set_multi;
|
|
netdev->set_mac_address = &atl1e_set_mac_addr;
|
|
netdev->change_mtu = &atl1e_change_mtu;
|
|
netdev->do_ioctl = &atl1e_ioctl;
|
|
netdev->tx_timeout = &atl1e_tx_timeout;
|
|
netdev->watchdog_timeo = AT_TX_WATCHDOG;
|
|
netdev->vlan_rx_register = atl1e_vlan_rx_register;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
netdev->poll_controller = atl1e_netpoll;
|
|
#endif
|
|
atl1e_set_ethtool_ops(netdev);
|
|
|
|
netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM |
|
|
NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
|
|
netdev->features |= NETIF_F_LLTX;
|
|
netdev->features |= NETIF_F_TSO;
|
|
netdev->features |= NETIF_F_TSO6;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* atl1e_probe - Device Initialization Routine
|
|
* @pdev: PCI device information struct
|
|
* @ent: entry in atl1e_pci_tbl
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
*
|
|
* atl1e_probe initializes an adapter identified by a pci_dev structure.
|
|
* The OS initialization, configuring of the adapter private structure,
|
|
* and a hardware reset occur.
|
|
*/
|
|
static int __devinit atl1e_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *netdev;
|
|
struct atl1e_adapter *adapter = NULL;
|
|
static int cards_found;
|
|
|
|
int err = 0;
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "cannot enable PCI device\n");
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* The atl1e chip can DMA to 64-bit addresses, but it uses a single
|
|
* shared register for the high 32 bits, so only a single, aligned,
|
|
* 4 GB physical address range can be used at a time.
|
|
*
|
|
* Supporting 64-bit DMA on this hardware is more trouble than it's
|
|
* worth. It is far easier to limit to 32-bit DMA than update
|
|
* various kernel subsystems to support the mechanics required by a
|
|
* fixed-high-32-bit system.
|
|
*/
|
|
if ((pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) ||
|
|
(pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) != 0)) {
|
|
dev_err(&pdev->dev, "No usable DMA configuration,aborting\n");
|
|
goto err_dma;
|
|
}
|
|
|
|
err = pci_request_regions(pdev, atl1e_driver_name);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "cannot obtain PCI resources\n");
|
|
goto err_pci_reg;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
netdev = alloc_etherdev(sizeof(struct atl1e_adapter));
|
|
if (netdev == NULL) {
|
|
err = -ENOMEM;
|
|
dev_err(&pdev->dev, "etherdev alloc failed\n");
|
|
goto err_alloc_etherdev;
|
|
}
|
|
|
|
err = atl1e_init_netdev(netdev, pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "init netdevice failed\n");
|
|
goto err_init_netdev;
|
|
}
|
|
adapter = netdev_priv(netdev);
|
|
adapter->bd_number = cards_found;
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
adapter->hw.adapter = adapter;
|
|
adapter->hw.hw_addr = pci_iomap(pdev, BAR_0, 0);
|
|
if (!adapter->hw.hw_addr) {
|
|
err = -EIO;
|
|
dev_err(&pdev->dev, "cannot map device registers\n");
|
|
goto err_ioremap;
|
|
}
|
|
netdev->base_addr = (unsigned long)adapter->hw.hw_addr;
|
|
|
|
/* init mii data */
|
|
adapter->mii.dev = netdev;
|
|
adapter->mii.mdio_read = atl1e_mdio_read;
|
|
adapter->mii.mdio_write = atl1e_mdio_write;
|
|
adapter->mii.phy_id_mask = 0x1f;
|
|
adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK;
|
|
|
|
netif_napi_add(netdev, &adapter->napi, atl1e_clean, 64);
|
|
|
|
init_timer(&adapter->phy_config_timer);
|
|
adapter->phy_config_timer.function = &atl1e_phy_config;
|
|
adapter->phy_config_timer.data = (unsigned long) adapter;
|
|
|
|
/* get user settings */
|
|
atl1e_check_options(adapter);
|
|
/*
|
|
* Mark all PCI regions associated with PCI device
|
|
* pdev as being reserved by owner atl1e_driver_name
|
|
* Enables bus-mastering on the device and calls
|
|
* pcibios_set_master to do the needed arch specific settings
|
|
*/
|
|
atl1e_setup_pcicmd(pdev);
|
|
/* setup the private structure */
|
|
err = atl1e_sw_init(adapter);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "net device private data init failed\n");
|
|
goto err_sw_init;
|
|
}
|
|
|
|
/* Init GPHY as early as possible due to power saving issue */
|
|
atl1e_phy_init(&adapter->hw);
|
|
/* reset the controller to
|
|
* put the device in a known good starting state */
|
|
err = atl1e_reset_hw(&adapter->hw);
|
|
if (err) {
|
|
err = -EIO;
|
|
goto err_reset;
|
|
}
|
|
|
|
if (atl1e_read_mac_addr(&adapter->hw) != 0) {
|
|
err = -EIO;
|
|
dev_err(&pdev->dev, "get mac address failed\n");
|
|
goto err_eeprom;
|
|
}
|
|
|
|
memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
|
|
memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
|
|
dev_dbg(&pdev->dev, "mac address : %02x-%02x-%02x-%02x-%02x-%02x\n",
|
|
adapter->hw.mac_addr[0], adapter->hw.mac_addr[1],
|
|
adapter->hw.mac_addr[2], adapter->hw.mac_addr[3],
|
|
adapter->hw.mac_addr[4], adapter->hw.mac_addr[5]);
|
|
|
|
INIT_WORK(&adapter->reset_task, atl1e_reset_task);
|
|
INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task);
|
|
err = register_netdev(netdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "register netdevice failed\n");
|
|
goto err_register;
|
|
}
|
|
|
|
/* assume we have no link for now */
|
|
netif_stop_queue(netdev);
|
|
netif_carrier_off(netdev);
|
|
|
|
cards_found++;
|
|
|
|
return 0;
|
|
|
|
err_reset:
|
|
err_register:
|
|
err_sw_init:
|
|
err_eeprom:
|
|
iounmap(adapter->hw.hw_addr);
|
|
err_init_netdev:
|
|
err_ioremap:
|
|
free_netdev(netdev);
|
|
err_alloc_etherdev:
|
|
pci_release_regions(pdev);
|
|
err_pci_reg:
|
|
err_dma:
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* atl1e_remove - Device Removal Routine
|
|
* @pdev: PCI device information struct
|
|
*
|
|
* atl1e_remove is called by the PCI subsystem to alert the driver
|
|
* that it should release a PCI device. The could be caused by a
|
|
* Hot-Plug event, or because the driver is going to be removed from
|
|
* memory.
|
|
*/
|
|
static void __devexit atl1e_remove(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct atl1e_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/*
|
|
* flush_scheduled work may reschedule our watchdog task, so
|
|
* explicitly disable watchdog tasks from being rescheduled
|
|
*/
|
|
set_bit(__AT_DOWN, &adapter->flags);
|
|
|
|
atl1e_del_timer(adapter);
|
|
atl1e_cancel_work(adapter);
|
|
|
|
unregister_netdev(netdev);
|
|
atl1e_free_ring_resources(adapter);
|
|
atl1e_force_ps(&adapter->hw);
|
|
iounmap(adapter->hw.hw_addr);
|
|
pci_release_regions(pdev);
|
|
free_netdev(netdev);
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
/*
|
|
* atl1e_io_error_detected - called when PCI error is detected
|
|
* @pdev: Pointer to PCI device
|
|
* @state: The current pci connection state
|
|
*
|
|
* This function is called after a PCI bus error affecting
|
|
* this device has been detected.
|
|
*/
|
|
static pci_ers_result_t
|
|
atl1e_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct atl1e_adapter *adapter = netdev->priv;
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if (netif_running(netdev))
|
|
atl1e_down(adapter);
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
/* Request a slot slot reset. */
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
/*
|
|
* atl1e_io_slot_reset - called after the pci bus has been reset.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* Restart the card from scratch, as if from a cold-boot. Implementation
|
|
* resembles the first-half of the e1000_resume routine.
|
|
*/
|
|
static pci_ers_result_t atl1e_io_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct atl1e_adapter *adapter = netdev->priv;
|
|
|
|
if (pci_enable_device(pdev)) {
|
|
dev_err(&pdev->dev,
|
|
"ATL1e: Cannot re-enable PCI device after reset.\n");
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
pci_set_master(pdev);
|
|
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
|
|
atl1e_reset_hw(&adapter->hw);
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
/*
|
|
* atl1e_io_resume - called when traffic can start flowing again.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* This callback is called when the error recovery driver tells us that
|
|
* its OK to resume normal operation. Implementation resembles the
|
|
* second-half of the atl1e_resume routine.
|
|
*/
|
|
static void atl1e_io_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct atl1e_adapter *adapter = netdev->priv;
|
|
|
|
if (netif_running(netdev)) {
|
|
if (atl1e_up(adapter)) {
|
|
dev_err(&pdev->dev,
|
|
"ATL1e: can't bring device back up after reset\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
netif_device_attach(netdev);
|
|
}
|
|
|
|
static struct pci_error_handlers atl1e_err_handler = {
|
|
.error_detected = atl1e_io_error_detected,
|
|
.slot_reset = atl1e_io_slot_reset,
|
|
.resume = atl1e_io_resume,
|
|
};
|
|
|
|
static struct pci_driver atl1e_driver = {
|
|
.name = atl1e_driver_name,
|
|
.id_table = atl1e_pci_tbl,
|
|
.probe = atl1e_probe,
|
|
.remove = __devexit_p(atl1e_remove),
|
|
/* Power Managment Hooks */
|
|
#ifdef CONFIG_PM
|
|
.suspend = atl1e_suspend,
|
|
.resume = atl1e_resume,
|
|
#endif
|
|
.shutdown = atl1e_shutdown,
|
|
.err_handler = &atl1e_err_handler
|
|
};
|
|
|
|
/*
|
|
* atl1e_init_module - Driver Registration Routine
|
|
*
|
|
* atl1e_init_module is the first routine called when the driver is
|
|
* loaded. All it does is register with the PCI subsystem.
|
|
*/
|
|
static int __init atl1e_init_module(void)
|
|
{
|
|
return pci_register_driver(&atl1e_driver);
|
|
}
|
|
|
|
/*
|
|
* atl1e_exit_module - Driver Exit Cleanup Routine
|
|
*
|
|
* atl1e_exit_module is called just before the driver is removed
|
|
* from memory.
|
|
*/
|
|
static void __exit atl1e_exit_module(void)
|
|
{
|
|
pci_unregister_driver(&atl1e_driver);
|
|
}
|
|
|
|
module_init(atl1e_init_module);
|
|
module_exit(atl1e_exit_module);
|