| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 26 Jun 2008 21:45:20 -0500
From: Jay Cliburn <jacliburn@...lsouth.net>
To: Jie Yang <Jie.Yang@...eros.com>
Cc: "jeff@...zik.org" <jeff@...zik.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH 2.6.25.3 2/5] atl1e: Atheros L1E Gigabit Ethernet driver
On Thu, 26 Jun 2008 13:37:50 +0800
Jie Yang <Jie.Yang@...eros.com> wrote:
> 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
> + */
The last paragraph in the comment block looks like a cut/paste
artifact (maybe from the atl1 driver?).
> +
> +
> +#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
Delete if not needed.
> +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 */
Please reorder the code to minimize forward declarations.
> +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);
Please use dev_* for console messages everywhere you currently use
printk. For bonus points, please use netif_msg_* for message
filtering controllable by ethtool. (see include/linux/netdevice.h)
> + 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);
Please just use dev_dbg for all these AT_DBG macros..
> + 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
> + **/
This is not a valid docbook comment. The comment block for non-docbook
comments should be:
/*
* comment
*/
> +static int mdio_read(struct net_device *netdev, int phy_id, int
> reg_num) +{
atl1e_mdio_read()
> + 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)
atl1e_mdio_write()
> +{
> + 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;
Initialization unnecessary.
> +
> + 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;
Do the TPD and RFD rings share the upper 32-bits of their buffer
address like they do on the L1? If so, there'll be trouble using a
64-bit DMA mask, because all the rings must exist within a contiguous
4GB address space.
I note way down below in atl1e_setup_ring_resources() that the driver
(rightly) throws an error and if the rings cross a 32-bit boundary, so
why even try and use a 64-bit DMA mask?
> + } 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
Move to header file.
> + 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
Unnecessary initializations.
> +
> + 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");
Use dev_dbg for all these KERN_DEBUG printks.
> + 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
Why?
> +}
> +
> +#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);
> +}
> +
> +
Unnecessary blank line.
> +/**
> + * 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
> + **/
Add blank line separator between comment block and function.
> +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);
> +}
...and another blank line here.
> +/**
> + * 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;
Perhaps a "to do" comment is in order here?
> +}
> +
> +#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
Remove if not needed.
> +
> +/**
> + * 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 */
> +}
> +
> +
Extra blank line.
> +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
> + **/
Add blank line.
> +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;
Unnecessary initializations.
> +
> + 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);
> +}
> +
> +
> +
Blank lines.
> +/**
> + * 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)
All on one line.
> +{
> + DEBUGFUNC("atl1e_restore_vlan !");
> + atl1e_vlan_rx_register(adapter->netdev, adapter->vlgrp);
> +}
> +
> +
Extra blank line.
> +static inline void atl1e_configure_des_ring(const struct
> atl1e_adapter *adapter) +{
> +
Remove blank line.
> + 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) {
What's an l2e?
> + extra_size = ENET_HEADER_SIZE + VLAN_SIZE +
> ETHERNET_FCS_SIZE;
Please use kernel-provided constants here.
> + 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 */
Aha! My earlier question about the ring address is now answered.
> + 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;
> +}
> +
> +
> +
Blank lines.
> +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);
> + }
> + }
> + }
> +}
> +
> +
Blank line. I won't gripe about these anymore. Just go through and
make sure they're cleaned up.
> +/**
> + * 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:
> + **/
Don't use docbook comments unless the information is filled in.
> +
> +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:
> + **/
Ditto.
> +
> +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
> + **/
Remove pt_regs from comment.
> +
> +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");
payload is one word. s/ant/an
> + 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
> + }
> +}
> +
> +
> +
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists