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Date: Thu, 26 Jun 2008 13:37:50 +0800
From: Jie Yang <Jie.Yang@...eros.com>
To: "jeff@...zik.org" <jeff@...zik.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH 2.6.25.3 2/5] atl1e: Atheros L1E Gigabit Ethernet driver
From: Jie Yang <jie.yang@...eros.com>
Full patch for the Atheros L1E Gigabit Ethernet driver.
Supportring AR8121, AR8113 and AR8114
Signed-off-by: Jie Yang <jie.yang @atheros.com>
---
diff -uprN -X linux-2.6.25.3.orig/Documentation/dontdiff linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_main.c linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_main.c
--- linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_main.c 1970-01-01 08:00:00.000000000 +0800
+++ linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_main.c 2008-06-20 11:23:23.000000000 +0800
@@ -0,0 +1,2855 @@
+/*
+ * 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.
+ *
+ * There are a lot of defines in here that are unused and/or have cryptic
+ * names. Please leave them alone, as they're the closest thing we have
+ * to a spec from Atheros at present. *ahem* -- CHS
+ */
+
+
+#include "atl1e.h"
+
+char atl1e_driver_name[] = "ATL1e";
+static char atl1e_driver_string[] =
+ "Atheros(R) AR8121/AR8113/AR8114 PCI-E Ethernet Network Driver";
+#ifndef CONFIG_ATL1E_NAPI
+#define DRIVERNAPI
+#else
+#define DRIVERNAPI "-NAPI"
+#endif
+#define DRV_VERSION "1.0.0.7"DRIVERNAPI
+char atl1e_driver_version[] = DRV_VERSION;
+static char atl1e_copyright[] = "Copyright (c) 2007 Atheros Corporation.";
+
+
+/*
+ * 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);
+
+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,
+};
+
+
+int atl1e_up(struct atl1e_adapter *adapter);
+void atl1e_down(struct atl1e_adapter *adapter);
+#if 0
+static int atl1e_reset(struct atl1e_adapter *adapter);
+#endif
+static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter);
+static void atl1e_free_ring_resources(struct atl1e_adapter *adapter);
+void atl1e_reinit_locked(struct atl1e_adapter *adapter);
+
+
+/* Local Function Prototypes */
+static int atl1e_init_module(void);
+static void atl1e_exit_module(void);
+static int atl1e_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
+#ifdef CONFIG_ATL1E_NAPI
+static int atl1e_clean(struct napi_struct *napi, int budget);
+#endif
+static void __devexit atl1e_remove(struct pci_dev *pdev);
+static int atl1e_open(struct net_device *netdev);
+static int atl1e_close(struct net_device *netdev);
+static int atl1e_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
+static struct net_device_stats *atl1e_get_stats(struct net_device *netdev);
+static int atl1e_tso_csum(struct atl1e_adapter *adapter, struct sk_buff *skb,
+ struct atl1e_tpd_desc *tpd_desc);
+static void atl1e_tx_map(struct atl1e_adapter *adapter, struct sk_buff *skb,
+ struct atl1e_tpd_desc *tpd_desc);
+static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count,
+ struct atl1e_tpd_desc *tpd_desc);
+static int atl1e_change_mtu(struct net_device *netdev, int new_mtu);
+static void atl1e_set_multi(struct net_device *netdev);
+static int atl1e_set_mac(struct net_device *netdev, void *p);
+static int atl1e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
+static void atl1e_tx_timeout(struct net_device *dev);
+static irqreturn_t atl1e_intr(int irq, void *data);
+static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter);
+
+static void atl1e_update_hw_stats(struct atl1e_adapter *adapter);
+static void atl1e_init_ring_resources(struct atl1e_adapter *adapter);
+static int atl1e_sw_init(struct atl1e_adapter *adapter);
+static int atl1e_alloc_queues(struct atl1e_adapter *adapter);
+
+static void atl1e_phy_config(unsigned long data);
+static void atl1e_reset_task(struct work_struct *work);
+static void atl1e_link_chg_task(struct work_struct *work);
+static void atl1e_link_chg_event(struct atl1e_adapter *adapter);
+void atl1e_set_ethtool_ops(struct net_device *netdev);
+static int atl1e_check_link(struct atl1e_adapter *adapter);
+static void atl1e_init_ring_ptrs(struct atl1e_adapter *adapter);
+static s32 atl1e_configure(struct atl1e_adapter *adapter);
+#ifdef CONFIG_ATL1E_NAPI
+static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que,
+ int *work_done, int work_to_do);
+#else
+static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que);
+#endif
+
+static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter);
+static void atl1e_clean_rx_ring(struct atl1e_adapter *adapter);
+
+static int atl1e_mii_ioctl(struct net_device *netdev,
+ struct ifreq *ifr, int cmd);
+
+static void atl1e_vlan_rx_register(struct net_device *netdev,
+ struct vlan_group *grp);
+static void atl1e_restore_vlan(struct atl1e_adapter *adapter);
+
+static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state);
+#ifdef CONFIG_PM
+static int atl1e_resume(struct pci_dev *pdev);
+#endif
+
+static void atl1e_shutdown(struct pci_dev *pdev);
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/* for netdump / net console */
+static void atl1e_netpoll(struct net_device *netdev);
+#endif
+
+static pci_ers_result_t atl1e_io_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state);
+static pci_ers_result_t atl1e_io_slot_reset(struct pci_dev *pdev);
+static void atl1e_io_resume(struct pci_dev *pdev);
+
+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
+};
+
+MODULE_AUTHOR("Atheros Corporation, <xiong.huang@...eros.com>, Jie Yang <jie.yang@...eros.com>");
+MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+/**
+ * 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)
+{
+ int ret;
+
+ printk(KERN_INFO "%s - version %s\n",
+ atl1e_driver_string, atl1e_driver_version);
+ printk(KERN_INFO "%s\n", atl1e_copyright);
+ ret = pci_register_driver(&atl1e_driver);
+
+ return ret;
+}
+
+module_init(atl1e_init_module);
+
+/**
+ * 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_exit(atl1e_exit_module);
+
+static int atl1e_request_irq(struct atl1e_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int flags = 0;
+ int err = 0;
+
+ adapter->have_msi = true;
+ err = pci_enable_msi(adapter->pdev);
+ if (err) {
+ AT_DBG("Unable to allocate MSI interrupt Error: %d\n", err);
+ adapter->have_msi = false;
+ }
+
+ if (!adapter->have_msi)
+ flags |= IRQF_SHARED;
+
+ err = request_irq(adapter->pdev->irq, &atl1e_intr, flags,
+ netdev->name, netdev);
+ if (err) {
+ AT_DBG("Unable to allocate interrupt Error: %d\n", err);
+ if (adapter->have_msi)
+ pci_disable_msi(adapter->pdev);
+ return err;
+ }
+ AT_DBG("atl1e_request_irq OK\n");
+ return err;
+}
+
+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 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);
+ msec_delay(1);
+}
+
+
+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;
+ 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;
+}
+
+/**
+ * caller should hold mdio_lock
+ **/
+static int 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 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_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;
+ bool pci_using_64 = true;
+
+ int err = 0;
+
+ DEBUGFUNC("atl1e_probe !");
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "cannot enable PCI device\n");
+ return err;
+ }
+
+ pci_set_master(pdev);
+
+ err = pci_request_regions(pdev, atl1e_driver_name);
+ if (err) {
+ dev_err(&pdev->dev, "cannot obtain PCI resources\n");
+ goto err_pci_reg;
+ }
+
+ 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;
+ }
+
+ if (sizeof(dma_addr_t) > sizeof(u32) &&
+ !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
+ !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
+ pci_using_64 = true;
+ } else {
+ if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) &&
+ (err = pci_set_consistent_dma_mask(pdev,
+ DMA_32BIT_MASK))) {
+ dev_err(&pdev->dev, "No usable DMA configuration,"
+ "aborting\n");
+ goto err_dma;
+ }
+ pci_using_64 = false;
+ }
+
+ adapter = netdev_priv(netdev);
+ adapter->bd_number = cards_found;
+ adapter->pci_using_64 = pci_using_64;
+ 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;
+ }
+
+ /* init mii data */
+ adapter->mii.dev = netdev;
+ adapter->mii.mdio_read = mdio_read;
+ adapter->mii.mdio_write = mdio_write;
+ adapter->mii.phy_id_mask = 0x1f;
+ adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK;
+
+ if ((err = atl1e_read_mac_addr(&adapter->hw)) ||
+ (!is_valid_ether_addr(adapter->hw.mac_addr))) {
+ err = -EIO;
+ dev_err(&pdev->dev, "get mac address failed\n");
+ goto err_eeprom;
+ }
+#ifdef CONFIG_ATL1E_NAPI
+ netif_napi_add(netdev, &adapter->napi, atl1e_clean, 64);
+#endif
+
+ memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
+ memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
+
+ AT_DBG("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_timer(&adapter->phy_config_timer);
+ adapter->phy_config_timer.function = &atl1e_phy_config;
+ adapter->phy_config_timer.data = (unsigned long) 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;
+ }
+
+
+ if (pci_using_64) {
+ netdev->features |= NETIF_F_HIGHDMA;
+ AT_DBG("pci using 64bit address\n");
+ }
+
+ /* get user settings */
+ atl1e_check_options(adapter);
+
+ /* Init GPHY as early as possible due to power saving issue */
+ AT_MII_LOCK(adapter);
+ atl1e_phy_init(&adapter->hw);
+ AT_MII_UNLOCK(adapter);
+ /* 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;
+ }
+
+ 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;
+}
+
+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_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);
+
+ DEBUGFUNC("atl1e_remove");
+
+ /*
+ * 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);
+}
+
+
+static void atl1e_shutdown(struct pci_dev *pdev)
+{
+ atl1e_suspend(pdev, PMSG_SUSPEND);
+}
+
+#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);
+ atl1e_clean_tx_irq(adapter);
+#ifndef CONFIG_ATL1E_NAPI
+ atl1e_clean_rx_irq(adapter, 0);
+#endif
+ enable_irq(adapter->pdev->irq);
+}
+#endif
+
+
+static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+#define AT_SUSPEND_LINK_TIMEOUT 28
+ 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
+
+ DEBUGFUNC("atl1e_suspend !");
+
+ 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 = hw->mii_autoneg_adv_reg &
+ MII_AR_SPEED_MASK;
+ mii_advertise_data |= MII_AR_10T_HD_CAPS;
+
+ if ((atl1e_write_phy_reg(hw, MII_ADVERTISE,
+ mii_advertise_data) != 0) || (atl1e_phy_commit(hw)) != 0) {
+ printk(KERN_DEBUG "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++) {
+ msec_delay(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)
+ printk(KERN_DEBUG "%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) {
+ printk(KERN_DEBUG "%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;
+
+ AT_DBG("%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;
+#undef AT_SUSPEND_LINK_TIMEOUT
+}
+
+#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;
+
+ DEBUGFUNC("atl1e_resume !");
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+
+ if ((err = pci_enable_device(pdev))) {
+ printk(KERN_ERR "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)))
+ return err;
+
+ atl1e_reset_hw(&adapter->hw);
+
+ if (netif_running(netdev))
+ atl1e_up(adapter);
+
+ netif_device_attach(netdev);
+
+ return 0;
+}
+#endif
+
+
+/**
+ * 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)) {
+ printk(KERN_ERR
+ "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)) {
+ printk(KERN_ERR
+ "ATL1e: can't bring device back up after reset\n");
+ return;
+ }
+ }
+
+ netif_device_attach(netdev);
+}
+
+
+/**
+ * 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_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 + ENET_HEADER_SIZE +
+ VLAN_SIZE + ETHERNET_FCS_SIZE + 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)) {
+ AT_ERR("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;
+}
+
+#ifdef CONFIG_ATL1E_NAPI
+/**
+ * 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;
+ 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);
+ if (test_bit(__AT_DOWN, &adapter->flags)) {
+ atomic_dec(&adapter->irq_sem);
+ } else {
+ /* reenable RX intr */
+ atl1e_irq_enable(adapter);
+ }
+ }
+ return work_done;
+}
+
+#endif
+
+
+/**
+ * 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 AT_SUCCESS;
+}
+
+#if 0
+static int atl1e_reset(struct atl1e_adapter *adapter)
+{
+ int err = 0;
+
+ err = atl1e_reset_hw(&adapter->hw);
+ if (err) {
+ printk(KERN_WARNING"at reset failed.\n");
+ return err;
+ }
+
+ return atl1e_init_hw(&adapter->hw);
+}
+#endif
+
+/**
+ * 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;
+
+ DEBUGFUNC("atl1e_open !");
+
+ /* 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);
+ DEBUGFUNC("atl1e_close!");
+
+ WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
+
+ atl1e_down(adapter);
+ atl1e_free_irq(adapter);
+ atl1e_free_ring_resources(adapter);
+
+ return 0;
+}
+
+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
+ + ENET_HEADER_SIZE + VLAN_SIZE
+ + ETHERNET_FCS_SIZE;
+ 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;
+}
+
+/**
+ * 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 = NULL;
+ struct atl1e_rx_ring *rx_ring = NULL;
+ struct atl1e_rx_page_desc *rx_page_desc = NULL;
+ int size, i, j;
+ u32 offset = 0;
+ int err = 0;
+
+ DEBUGFUNC("atl1e_setup_ring_resources");
+ 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;
+ }
+
+ if (adapter->pci_using_64) {
+ /* test whether HIDWORD dma buffer is not cross boundary */
+ if (((adapter->ring_dma & AT_DMA_HI_ADDR_MASK) >> 32) !=
+ (((adapter->ring_dma + size) &
+ AT_DMA_HI_ADDR_MASK) >> 32)) {
+ dma_addr_t dma;
+ u8 *addr;
+
+ addr = pci_alloc_consistent(pdev, size, &dma);
+ if (addr) {
+ if (((dma & AT_DMA_HI_ADDR_MASK) >> 32) !=
+ (((dma + size) &
+ AT_DMA_HI_ADDR_MASK) >> 32)) {
+ err = -1;
+ dev_err(&pdev->dev,
+ "memory allocated cross 32bit\n");
+ goto failed;
+ } else {
+ pci_free_consistent(pdev,
+ adapter->ring_size,
+ adapter->ring_vir_addr,
+ adapter->ring_dma);
+ adapter->ring_vir_addr = addr;
+ adapter->ring_dma = dma;
+ goto init_desc;
+ }
+ } else {
+ dev_err(&pdev->dev, "memory allocated cross"
+ "32bit boundary !");
+ err = -ENOMEM;
+ goto failed;
+ }
+ }
+ }
+
+init_desc:
+
+ 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 AT_SUCCESS;
+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;
+}
+
+
+/*
+ * 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;
+
+ DEBUGFUNC("atl1e_free_ring_resources");
+
+ 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;
+ }
+}
+
+int atl1e_up(struct atl1e_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int err = 0;
+ u32 val;
+
+ DEBUGFUNC("atl1e_up !");
+
+ atl1e_init_ring_ptrs(adapter);
+
+ /* hardware has been reset, we need to reload some things */
+ err = atl1e_init_hw(&adapter->hw);
+ if (err) {
+ err = -EIO;
+ return err;
+ }
+ atl1e_set_multi(netdev);
+ atl1e_restore_vlan(adapter);
+
+ if (atl1e_configure(adapter)) {
+ err = -EIO;
+ goto err_up;
+ }
+
+ clear_bit(__AT_DOWN, &adapter->flags);
+ 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);
+
+#ifdef CONFIG_ATL1E_NAPI
+ napi_enable(&adapter->napi);
+#endif
+
+err_up:
+ return err;
+}
+
+static inline void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter)
+{
+ u32 value;
+ struct atl1e_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+
+ /* Config MAC CTRL Register */
+ value = MAC_CTRL_TX_EN |
+ MAC_CTRL_RX_EN ;
+
+ if (FULL_DUPLEX == adapter->link_duplex)
+ value |= MAC_CTRL_DUPLX;
+
+ value |= ((u32)((SPEED_1000 == adapter->link_speed) ?
+ MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
+ MAC_CTRL_SPEED_SHIFT);
+ value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
+
+ value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
+ value |= (((u32)adapter->hw.preamble_len &
+ MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
+
+ if (adapter->vlgrp)
+ value |= MAC_CTRL_RMV_VLAN;
+
+ value |= MAC_CTRL_BC_EN;
+ if (netdev->flags & IFF_PROMISC)
+ value |= MAC_CTRL_PROMIS_EN;
+ if (netdev->flags & IFF_ALLMULTI)
+ value |= MAC_CTRL_MC_ALL_EN;
+
+ AT_WRITE_REG(hw, REG_MAC_CTRL, value);
+}
+
+
+static int atl1e_check_link(struct atl1e_adapter *adapter)
+{
+ struct atl1e_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ int err = 0;
+ u16 speed, duplex, phy_data;
+
+ DEBUGFUNC("atl1e_check_link !");
+
+ /* 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;
+ DEBUGOUT("NIC Link is Down");
+ /* 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);
+ printk(KERN_INFO "%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 AT_SUCCESS;
+}
+
+void atl1e_down(struct atl1e_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ DEBUGFUNC("atl1e_down !");
+
+ /* 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);
+
+#ifdef CONFIG_ATL1E_NAPI
+ napi_disable(&adapter->napi);
+#endif
+ 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_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;
+
+ DEBUGFUNC("atl1e_set_multi !");
+
+ /* 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);
+ u32 mac_ctrl_data = 0;
+
+ DEBUGFUNC("atl1e_vlan_rx_register !");
+
+ 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)
+{
+ DEBUGFUNC("atl1e_restore_vlan !");
+ atl1e_vlan_rx_register(adapter->netdev, adapter->vlgrp);
+}
+
+
+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 = ENET_HEADER_SIZE + VLAN_SIZE + ETHERNET_FCS_SIZE;
+ 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((atl1e_dma_req_block)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((atl1e_dma_req_block)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;
+}
+/**
+ * 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;
+ u32 intr_status_data = 0;
+
+ DEBUGFUNC("atl1e_configure !");
+
+ /* clear interrupt status */
+ AT_WRITE_REG(hw, REG_ISR, ~0);
+
+ /* 1. set MAC Address */
+ 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 + ENET_HEADER_SIZE +
+ VLAN_SIZE + ETHERNET_FCS_SIZE);
+
+ /* 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)) {
+ printk(KERN_ERR "atl1e_configure failed,"
+ "PCIE phy link down\n");
+ return -1;
+ }
+
+ AT_WRITE_REG(hw, REG_ISR, 0x7fffffff);
+ return AT_SUCCESS;
+}
+
+/**
+ * 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(struct net_device *netdev, void *p)
+{
+ struct atl1e_adapter *adapter = netdev_priv(netdev);
+ struct sockaddr *addr = p;
+
+ DEBUGFUNC("atl1e_set_mac !");
+
+ 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);
+
+ 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;
+
+ DEBUGFUNC("atl1e_change_mtu !");
+
+ 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;
+}
+
+
+
+void atl1e_read_pci_cfg(struct atl1e_hw *hw, u32 reg, u16 *value)
+{
+ struct atl1e_adapter *adapter = hw->adapter;
+
+ pci_read_config_word(adapter->pdev, reg, value);
+}
+
+void atl1e_write_pci_cfg(struct atl1e_hw *hw, u32 reg, u16 *value)
+{
+ struct atl1e_adapter *adapter = hw->adapter;
+
+ pci_write_config_word(adapter->pdev, reg, *value);
+}
+
+/**
+ * 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);
+ }
+ }
+ }
+}
+
+
+/**
+ * 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;
+ }
+}
+/**
+ * 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;
+ }
+}
+
+
+/**
+ * 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 mii_ioctl_data *data = if_mii(ifr);
+ unsigned long flags;
+ int retval = 0;
+
+ DEBUGFUNC("atl1e_mii_ioctl !");
+ if (!netif_running(netdev))
+ return -EINVAL;
+
+ AT_MII_LOCK_IRQSAVE(adapter, 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;
+ }
+
+ DEBUGOUT1("<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:
+ AT_MII_UNLOCK_IRQRESTORE(adapter, flags);
+ return retval;
+
+}
+
+
+/**
+ * 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);
+
+ DEBUGFUNC("atl1e_tx_timeout !");
+
+ /* Do the reset outside of interrupt context */
+ schedule_work(&adapter->reset_task);
+}
+
+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);
+}
+
+
+void atl1e_reinit_locked(struct atl1e_adapter *adapter)
+{
+
+ DEBUGFUNC("atl1e_reinit_locked !");
+
+ 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);
+}
+
+
+/**
+ * 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;
+
+ DEBUGFUNC("atl1e_link_chg_task !");
+ adapter = container_of(work, struct atl1e_adapter, link_chg_task);
+ AT_MII_LOCK_IRQSAVE(adapter, flags);
+ atl1e_check_link(adapter);
+ AT_MII_UNLOCK_IRQRESTORE(adapter, flags);
+}
+
+static void atl1e_link_chg_event(struct atl1e_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ u16 phy_data = 0;
+ u16 link_up = 0;
+
+ DEBUGFUNC("atl1e_link_chg_event!");
+ AT_MII_LOCK(adapter);
+ atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
+ atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
+ AT_MII_UNLOCK(adapter);
+ DEBUGOUT1("MII_BMSR=%x <atl1e_link_chg_event>", phy_data);
+
+ link_up = phy_data & BMSR_LSTATUS;
+ /* notify upper layer link down ASAP */
+ if (!link_up) {
+ if (netif_carrier_ok(netdev)) {
+ /* old link state: Up */
+ printk(KERN_INFO "%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 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);
+}
+
+
+
+/**
+ * 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 atl1e_hw *hw = &adapter->hw;
+ u32 status;
+
+ status = AT_READ_REG(hw, REG_ISR);
+ if (0 == (status & IMR_NORMAL_MASK) ||
+ 0 != (status & ISR_DIS_INT))
+ return IRQ_NONE;
+
+ /* link event */
+ if (status & ISR_GPHY)
+ atl1e_clear_phy_int(adapter);
+ /* Ack ISR */
+ AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT);
+
+ /* check if PCIE PHY Link down */
+ if (status & ISR_PHY_LINKDOWN) {
+ DEBUGOUT1("pcie phy linkdown %x", status);
+ if (netif_running(adapter->netdev)) {
+ /* reset MAC */
+ atl1e_irq_reset(adapter);
+ schedule_work(&adapter->reset_task);
+ return IRQ_HANDLED;
+ }
+ }
+
+
+ /* check if DMA read/write error */
+ if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
+ DEBUGOUT1("PCIE DMA RW error (status = 0x%x) !", status);
+ atl1e_irq_reset(adapter);
+ schedule_work(&adapter->reset_task);
+ return IRQ_HANDLED;
+ }
+
+ 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);
+ }
+
+ /* transmit event */
+ if (status & ISR_TX_EVENT)
+ atl1e_clean_tx_irq(adapter);
+
+#ifdef CONFIG_ATL1E_NAPI
+ if (status & ISR_RX_EVENT) {
+ /* disable rx interrupts, without the synchronize_irq bit */
+ atomic_inc(&adapter->irq_sem);
+ 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);
+ }
+#else /* if !CONFIG_ATL1E_NAPI */
+
+ if (status & ISR_RX_EVENT)
+ atl1e_clean_rx_irq(adapter, 0);
+
+#endif /* CONFIG_ATL1E_NAPI */
+
+ /* re-enable Interrupt*/
+ AT_WRITE_REG(&adapter->hw, REG_ISR, 0);
+
+ return IRQ_HANDLED;
+}
+
+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;
+}
+
+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 *h;
+ skb->ip_summed = CHECKSUM_NONE;
+
+ if ((prrs->ipv4 || prrs->ipv6) && (prrs->tcp || prrs->udp)) {
+ if (prrs->ipv4) {
+ h = (struct iphdr *)
+ (packet + (prrs->eth_type ? 22 : 14));
+ if (0 != h->frag_off && 0 == prrs->ipv4_df) {
+ /* fragment packet */
+ goto hw_xsum;
+ }
+ }
+ if (0 == prrs->ip_xsum && 0 == prrs->l4_xsum) {
+ /* good checksum */
+ 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
+#ifdef CONFIG_ATL1E_NAPI
+atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que,
+ int *work_done, int work_to_do)
+#else
+atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que)
+#endif
+{
+ 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;
+
+ DEBUGFUNC("atl1e_clean_rx_irq");
+ write_offset = *(rx_page->write_offset_addr);
+
+ if (likely(rx_page->read_offset < write_offset)) {
+ do {
+#ifdef CONFIG_ATL1E_NAPI
+ if (*work_done >= work_to_do)
+ break;
+ (*work_done)++;
+#endif
+ /* 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) {
+ AT_ERR("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->err) {
+ if (prrs->crc || prrs->dribble ||
+ prrs->code || prrs->trunc) {
+ /* hardware error, discard this packet*/
+ AT_ERR("rx packet desc error %x\n",
+ *((u32 *)prrs + 1));
+ goto skip_pkt;
+ }
+ }
+
+ packet_size = prrs->pkt_len - 4; /* CRC */
+ skb = netdev_alloc_skb(netdev,
+ packet_size + NET_IP_ALIGN);
+ if (skb == NULL) {
+ printk(KERN_WARNING "%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);
+
+#ifdef CONFIG_ATL1E_NAPI
+ if (unlikely(adapter->vlgrp && (prrs->vlan))) {
+ u16 vlan_tag = (prrs->vtag >> 4) |
+ ((prrs->vtag & 7) << 13) |
+ ((prrs->vtag & 8) << 9);
+ DEBUGOUT1("RXD VLAN TAG<RRD>=0x%04x",
+ prrs->vtag);
+ vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
+ vlan_tag);
+ } else {
+ netif_receive_skb(skb);
+ }
+#else /* CONFIG_ATL1E_NAPI */
+ if (unlikely(adapter->vlgrp && (prrs->vlan))) {
+ u16 vlan_tag = (prrs->vtag >> 4) |
+ ((prrs->vtag & 7) << 13) |
+ ((prrs->vtag & 8) << 9);
+ DEBUGOUT1("RXD VLAN TAG<RRD>=0x%04x",
+ prrs->vtag);
+ vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag);
+ } else {
+ netif_rx(skb);
+ }
+#endif /* CONFIG_ATL1E_NAPI */
+
+ netdev->last_rx = jiffies;
+
+skip_pkt:
+ /* skip current packet whether it's ok or not. */
+ rx_page->read_offset += ((u32)(prrs->pkt_len +
+ 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);
+}
+
+
+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_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;
+
+ DEBUGFUNC("atl1e_xmit_frame");
+
+ 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);
+ tpd->ins_vlan = 1;
+ AT_VLAN_TAG_TO_TPD_TAG(vlan_tag, tpd->vlan);
+ }
+
+ if (skb->protocol == ntohs(ETH_P_8021Q))
+ tpd->vlan_tag = 1; /* may double-vlan */
+
+
+ if (skb_network_offset(skb) != ETH_HLEN)
+ tpd->eth_type = 1; /* 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 int atl1e_tso_csum(struct atl1e_adapter *adapter,
+ struct sk_buff *skb, struct atl1e_tpd_desc *tpd_desc)
+{
+ 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 */
+ printk(KERN_WARNING
+ "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_desc->iphdrlen = ip_hdr(skb)->ihl;
+ tpd_desc->tcphdrlen = tcp_hdrlen(skb) >> 2;
+ tpd_desc->tcp_mss = skb_shinfo(skb)->gso_size;
+ tpd_desc->segment = 1;
+ }
+ return 0;
+ }
+
+ if (offload_type & SKB_GSO_TCPV6) {
+ struct atl1e_tpd_ipv6_desc *p6 =
+ (struct atl1e_tpd_ipv6_desc *) tpd_desc;
+
+ 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 */
+ printk(KERN_WARNING
+ "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);
+ p6->ipver = 1; /* IPV6 */
+ hdr_len >>= 1;
+ p6->ipv6hdrlen_1 = (hdr_len & 0x7);
+ p6->ipv6hdrlen_2 = ((hdr_len >> 3) & 0xF);
+ p6->tcphdrlen = tcp_hdrlen(skb) >> 2;
+ p6->tcp_mss = skb_shinfo(skb)->gso_size;
+ p6->segment = 1;
+ }
+ }
+ return 0;
+ }
+
+check_sum:
+ if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+ struct atl1e_tpd_csum_desc *px =
+ (struct atl1e_tpd_csum_desc *) tpd_desc;
+ 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;
+ px->payld_ofs = cso;
+ px->psdxsum_ofs = css;
+ px->my_xsum = 1;
+ }
+ }
+
+ 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;
+
+ nr_frags = skb_shinfo(skb)->nr_frags;
+
+ if (tpd->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->addr = cpu_to_le64(tx_buffer->dma);
+ use_tpd->buf_len = cpu_to_le16(tx_buffer->length);
+ }
+
+ 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->addr = cpu_to_le64(tx_buffer->dma);
+ use_tpd->buf_len = cpu_to_le16(tx_buffer->length);
+ }
+
+ 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->addr = cpu_to_le64(tx_buffer->dma);
+ use_tpd->buf_len = cpu_to_le16(tx_buffer->length);
+ }
+ }
+
+ if (tpd->segment)
+ tpd->hdr_flag = 1; /* note this one is a tcp header */
+
+ /* The last tpd */
+ use_tpd->eop = 1;
+ /* 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_desc)
+{
+ 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);
+}
+
+
+/**
+ * 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;
+
+ DEBUGFUNC("atl1e_phy_reconfig!");
+
+ AT_MII_LOCK_IRQSAVE(adapter, flags);
+ atl1e_restart_autoneg(hw);
+ AT_MII_UNLOCK_IRQRESTORE(adapter, flags);
+}
+
diff -uprN -X linux-2.6.25.3.orig/Documentation/dontdiff linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_osdep.h linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_osdep.h
--- linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_osdep.h 1970-01-01 08:00:00.000000000 +0800
+++ linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_osdep.h 2008-06-20 11:22:34.000000000 +0800
@@ -0,0 +1,115 @@
+/*
+ * 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.
+ *
+ * There are a lot of defines in here that are unused and/or have cryptic
+ * names. Please leave them alone, as they're the closest thing we have
+ * to a spec from Atheros at present. *ahem* -- CHS
+ */
+
+#ifndef _ATHEROS_OS_DEP_H_
+#define _ATHEROS_OS_DEP_H_
+
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/workqueue.h>
+#include <linux/spinlock.h>
+
+
+#define usec_delay(x) udelay(x)
+#ifndef msec_delay
+#define msec_delay(x) \
+ do { \
+ if (in_interrupt()) { \
+ /* Don't mdelay in interrupt context! */ \
+ BUG(); \
+ } else { \
+ msleep(x); \
+ } \
+ } while (0)
+
+/* Some workarounds require millisecond delays and are run during interrupt
+ * context. Most notably, when establishing link, the phy may need tweaking
+ * but cannot process phy register reads/writes faster than millisecond
+ * intervals...and we establish link due to a "link status change" interrupt.
+ */
+#define msec_delay_irq(x) mdelay(x)
+#endif
+
+
+#define PCI_COMMAND_REGISTER PCI_COMMAND
+#define CMD_MEM_WRT_INVALIDATE PCI_COMMAND_INVALIDATE
+#define ETH_ADDR_LEN ETH_ALEN
+
+
+#ifdef DBG
+#define DEBUGOUT(S) printk(KERN_DEBUG S "\n")
+#define DEBUGOUT1(S, A...) printk(KERN_DEBUG S "\n", A)
+#else
+#define DEBUGOUT(S)
+#define DEBUGOUT1(S, A...)
+#endif
+
+#define DEBUGFUNC(F) DEBUGOUT(F)
+#define DEBUGOUT2 DEBUGOUT1
+#define DEBUGOUT3 DEBUGOUT2
+#define DEBUGOUT7 DEBUGOUT3
+
+#ifdef DBG
+#define AT_DBG(args...) printk(KERN_DEBUG "atheros: " args)
+#else
+#define AT_DBG(args...)
+#endif
+
+#define AT_ERR(args...) printk(KERN_ERR "atheros: " args)
+
+
+#define AT_WRITE_REG(a, reg, value) ( \
+ writel((value), ((a)->hw_addr + reg)))
+
+#define AT_WRITE_FLUSH(a) (\
+ readl((a)->hw_addr))
+
+#define AT_READ_REG(a, reg) ( \
+ readl((a)->hw_addr + reg))
+
+
+#define AT_WRITE_REGB(a, reg, value) (\
+ writeb((value), ((a)->hw_addr + reg)))
+
+#define AT_READ_REGB(a, reg) (\
+ readb((a)->hw_addr + reg))
+
+#define AT_WRITE_REGW(a, reg, value) (\
+ writew((value), ((a)->hw_addr + reg)))
+
+#define AT_READ_REGW(a, reg) (\
+ readw((a)->hw_addr + reg))
+
+#define AT_WRITE_REG_ARRAY(a, reg, offset, value) ( \
+ writel((value), (((a)->hw_addr + reg) + ((offset) << 2))))
+
+#define AT_READ_REG_ARRAY(a, reg, offset) ( \
+ readl(((a)->hw_addr + reg) + ((offset) << 2)))
+
+
+#endif /* _ATHEROS_OS_DEP_H_ */
+
diff -uprN -X linux-2.6.25.3.orig/Documentation/dontdiff linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_param.c linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_param.c
--- linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_param.c 1970-01-01 08:00:00.000000000 +0800
+++ linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_param.c 2008-06-20 11:22:34.000000000 +0800
@@ -0,0 +1,317 @@
+/*
+ * 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.
+ *
+ * There are a lot of defines in here that are unused and/or have cryptic
+ * names. Please leave them alone, as they're the closest thing we have
+ * to a spec from Atheros at present. *ahem* -- CHS
+ */
+
+#include <linux/netdevice.h>
+
+#include "atl1e.h"
+
+/* This is the only thing that needs to be changed to adjust the
+ * maximum number of ports that the driver can manage.
+ */
+
+#define AT_MAX_NIC 32
+
+#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 AT_PARAM_INIT { [0 ... AT_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 atl1e_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 AT_PARAM(X, desc) \
+ static const int __devinitdata X[AT_MAX_NIC+1] = AT_PARAM_INIT; \
+MODULE_PARM(X, "1-" __MODULE_STRING(AT_MAX_NIC) "i"); \
+MODULE_PARM_DESC(X, desc);
+#else
+#define AT_PARAM(X, desc) \
+ static int __devinitdata X[AT_MAX_NIC+1] = AT_PARAM_INIT; \
+ static 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 AT_MIN_TX_RING_SZ 32
+#define AT_MAX_TX_RING_SZ 1020
+#define AT_DEFAULT_TX_RING_SZ 128
+AT_PARAM(TxRingSz, "Transmit Ring Sizen");
+
+/* Receive Memory Block Count
+ *
+ * Valid Range: 16-512
+ *
+ * Default Value: 128
+ */
+#define AT_MIN_RXF_SZ 8 /* 8KB */
+#define AT_MAX_RXF_SZ 1024 /* 1MB */
+#define AT_DEFAULT_RXF_SZ 256 /* 128KB */
+AT_PARAM(RxfMemSize, "memory size of rx buffer(KB)");
+
+/* User Specified MediaType Override
+ *
+ * Valid Range: 0-5
+ * - 0 - auto-negotiate at all supported speeds
+ * - 1 - only link at 100Mbps Full Duplex
+ * - 2 - only link at 100Mbps Half Duplex
+ * - 3 - only link at 10Mbps Full Duplex
+ * - 4 - only link at 10Mbps Half Duplex
+ * Default Value: 0
+ */
+
+AT_PARAM(media_type, "MediaType Select");
+
+/* Interrupt Moderate Timer in units of 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
+AT_PARAM(IntModTimer, "Interrupt Moderator Timer");
+
+
+
+
+#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 atl1e_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 atl1e_opt_list { int i; char *str; } *p;
+ } l;
+ } arg;
+};
+
+static int __devinit atl1e_validate_option(int *value, struct atl1e_option *opt)
+{
+ 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:{
+ int i;
+ struct atl1e_opt_list *ent;
+
+ 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;
+}
+
+/**
+ * atl1e_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.
+ **/
+
+void __devinit atl1e_check_options(struct atl1e_adapter *adapter)
+{
+ int bd = adapter->bd_number;
+ if (bd >= AT_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 = AT_MAX_NIC;
+#endif
+ }
+
+ { /* Transmit Ring Size */
+ struct atl1e_option opt = {
+ .type = range_option,
+ .name = "Transmit Ring Size",
+ .err = "using default of "
+ __MODULE_STRING(AT_DEFAULT_TX_RING_SZ),
+ .def = AT_DEFAULT_TX_RING_SZ,
+ .arg = { .r = { .min = AT_MIN_TX_RING_SZ,
+ .max = AT_MAX_TX_RING_SZ} }
+ };
+ int val;
+#ifdef module_param_array
+ if (num_TxRingSz > bd) {
+#endif
+ val = TxRingSz[bd];
+ atl1e_validate_option(&val, &opt);
+ adapter->tx_ring.count = (u16) val & 0xFFFC;
+#ifdef module_param_array
+ } else {
+ adapter->tx_ring.count = (u16)opt.def;
+ }
+#endif
+ }
+
+ { /* Receive Memory Block Count */
+ struct atl1e_option opt = {
+ .type = range_option,
+ .name = "memory size of rx buffer(KB)",
+ .err = "using default of "
+ __MODULE_STRING(AT_DEFAULT_RXF_SZ),
+ .def = AT_DEFAULT_RXF_SZ,
+ .arg = { .r = { .min = AT_MIN_RXF_SZ,
+ .max = AT_MAX_RXF_SZ} }
+ };
+ int val;
+#ifdef module_param_array
+ if (num_RxfMemSize > bd) {
+#endif
+ val = RxfMemSize[bd];
+ atl1e_validate_option(&val, &opt);
+ adapter->rx_ring.page_size = (u32)val * 1024;
+#ifdef module_param_array
+ } else {
+ adapter->rx_ring.page_size = (u32)opt.def * 1024;
+ }
+#endif
+
+ }
+
+ { /* Interrupt Moderate Timer */
+ struct atl1e_option opt = {
+ .type = range_option,
+ .name = "Interrupt Moderate Timer",
+ .err = "using default of "
+ __MODULE_STRING(INT_MOD_DEFAULT_CNT),
+ .def = INT_MOD_DEFAULT_CNT,
+ .arg = { .r = { .min = INT_MOD_MIN_CNT,
+ .max = INT_MOD_MAX_CNT} }
+ } ;
+ int val;
+#ifdef module_param_array
+ if (num_IntModTimer > bd) {
+#endif
+ val = IntModTimer[bd];
+ atl1e_validate_option(&val, &opt);
+ adapter->hw.imt = (u16) val;
+#ifdef module_param_array
+ } else {
+ adapter->hw.imt = (u16)(opt.def);
+ }
+#endif
+ }
+
+ { /* MediaType */
+ struct atl1e_option opt = {
+ .type = range_option,
+ .name = "Speed/Duplex Selection",
+ .err = "using default of "
+ __MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
+ .def = MEDIA_TYPE_AUTO_SENSOR,
+ .arg = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
+ .max = MEDIA_TYPE_10M_HALF} }
+ } ;
+ int val;
+#ifdef module_param_array
+ if (num_media_type > bd) {
+#endif
+ val = media_type[bd];
+ atl1e_validate_option(&val, &opt);
+ adapter->hw.media_type = (u16) val;
+#ifdef module_param_array
+ } else {
+ adapter->hw.media_type = (u16)(opt.def);
+ }
+#endif
+ }
+}
+
+
+
--
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