atl1.c 98.8 KB
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/*
 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
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 * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
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 * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
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 *
 * 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.
 *
 * The full GNU General Public License is included in this distribution in the
 * file called COPYING.
 *
 * Contact Information:
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 * Xiong Huang <xiong.huang@atheros.com>
 * Jie Yang <jie.yang@atheros.com>
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 * Chris Snook <csnook@redhat.com>
 * Jay Cliburn <jcliburn@gmail.com>
 *
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 * This version is adapted from the Attansic reference driver.
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 *
 * TODO:
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 * Add more ethtool functions.
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 * Fix abstruse irq enable/disable condition described here:
 *	http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2
 *
 * NEEDS TESTING:
 * VLAN
 * multicast
 * promiscuous mode
 * interrupt coalescing
 * SMP torture testing
 */

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#include <asm/atomic.h>
#include <asm/byteorder.h>

#include <linux/compiler.h>
#include <linux/crc32.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
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#include <linux/etherdevice.h>
#include <linux/hardirq.h>
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#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/in.h>
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#include <linux/interrupt.h>
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#include <linux/ip.h>
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#include <linux/irqflags.h>
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#include <linux/irqreturn.h>
#include <linux/jiffies.h>
#include <linux/mii.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
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#include <linux/net.h>
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#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
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#include <linux/pm.h>
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#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
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#include <linux/tcp.h>
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#include <linux/timer.h>
#include <linux/types.h>
#include <linux/workqueue.h>
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#include <net/checksum.h>

#include "atl1.h"

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/* Temporary hack for merging atl1 and atl2 */
#include "atlx.c"
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/*
 * This is the only thing that needs to be changed to adjust the
 * maximum number of ports that the driver can manage.
 */
#define ATL1_MAX_NIC 4

#define OPTION_UNSET    -1
#define OPTION_DISABLED 0
#define OPTION_ENABLED  1

#define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }

/*
 * Interrupt Moderate Timer in units of 2 us
 *
 * Valid Range: 10-65535
 *
 * Default Value: 100 (200us)
 */
static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
static int num_int_mod_timer;
module_param_array_named(int_mod_timer, int_mod_timer, int,
	&num_int_mod_timer, 0);
MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");

#define DEFAULT_INT_MOD_CNT	100	/* 200us */
#define MAX_INT_MOD_CNT		65000
#define MIN_INT_MOD_CNT		50

struct atl1_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 atl1_opt_list {
				int i;
				char *str;
			} *p;
		} l;
	} arg;
};

static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
	struct pci_dev *pdev)
{
	if (*value == OPTION_UNSET) {
		*value = opt->def;
		return 0;
	}

	switch (opt->type) {
	case enable_option:
		switch (*value) {
		case OPTION_ENABLED:
			dev_info(&pdev->dev, "%s enabled\n", opt->name);
			return 0;
		case OPTION_DISABLED:
			dev_info(&pdev->dev, "%s disabled\n", opt->name);
			return 0;
		}
		break;
	case range_option:
		if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
			dev_info(&pdev->dev, "%s set to %i\n", opt->name,
				*value);
			return 0;
		}
		break;
	case list_option:{
			int i;
			struct atl1_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')
						dev_info(&pdev->dev, "%s\n",
							ent->str);
					return 0;
				}
			}
		}
		break;

	default:
		break;
	}

	dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
		opt->name, *value, opt->err);
	*value = opt->def;
	return -1;
}

/*
 * atl1_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 atl1_check_options(struct atl1_adapter *adapter)
{
	struct pci_dev *pdev = adapter->pdev;
	int bd = adapter->bd_number;
	if (bd >= ATL1_MAX_NIC) {
		dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
		dev_notice(&pdev->dev, "using defaults for all values\n");
	}
	{			/* Interrupt Moderate Timer */
		struct atl1_option opt = {
			.type = range_option,
			.name = "Interrupt Moderator Timer",
			.err = "using default of "
				__MODULE_STRING(DEFAULT_INT_MOD_CNT),
			.def = DEFAULT_INT_MOD_CNT,
			.arg = {.r = {.min = MIN_INT_MOD_CNT,
					.max = MAX_INT_MOD_CNT} }
		};
		int val;
		if (num_int_mod_timer > bd) {
			val = int_mod_timer[bd];
			atl1_validate_option(&val, &opt, pdev);
			adapter->imt = (u16) val;
		} else
			adapter->imt = (u16) (opt.def);
	}
}

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/*
 * atl1_pci_tbl - PCI Device ID Table
 */
static const struct pci_device_id atl1_pci_tbl[] = {
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	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)},
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	/* required last entry */
	{0,}
};
MODULE_DEVICE_TABLE(pci, atl1_pci_tbl);

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static const u32 atl1_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
	NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;

static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Message level (0=none,...,16=all)");

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/*
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 * Reset the transmit and receive units; mask and clear all interrupts.
 * hw - Struct containing variables accessed by shared code
 * return : 0  or  idle status (if error)
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 */
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static s32 atl1_reset_hw(struct atl1_hw *hw)
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{
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	struct pci_dev *pdev = hw->back->pdev;
	struct atl1_adapter *adapter = hw->back;
	u32 icr;
	int i;
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	/*
	 * Clear Interrupt mask to stop board from generating
	 * interrupts & Clear any pending interrupt events
	 */
	/*
	 * iowrite32(0, hw->hw_addr + REG_IMR);
	 * iowrite32(0xffffffff, hw->hw_addr + REG_ISR);
	 */
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	/*
	 * Issue Soft Reset to the MAC.  This will reset the chip's
	 * transmit, receive, DMA.  It will not effect
	 * the current PCI configuration.  The global reset bit is self-
	 * clearing, and should clear within a microsecond.
	 */
	iowrite32(MASTER_CTRL_SOFT_RST, hw->hw_addr + REG_MASTER_CTRL);
	ioread32(hw->hw_addr + REG_MASTER_CTRL);
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	iowrite16(1, hw->hw_addr + REG_PHY_ENABLE);
	ioread16(hw->hw_addr + REG_PHY_ENABLE);
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	/* delay about 1ms */
	msleep(1);
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	/* Wait at least 10ms for All module to be Idle */
	for (i = 0; i < 10; i++) {
		icr = ioread32(hw->hw_addr + REG_IDLE_STATUS);
		if (!icr)
			break;
		/* delay 1 ms */
		msleep(1);
		/* FIXME: still the right way to do this? */
		cpu_relax();
	}
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	if (icr) {
		if (netif_msg_hw(adapter))
			dev_dbg(&pdev->dev, "ICR = 0x%x\n", icr);
		return icr;
	}
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	return 0;
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}

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/* function about EEPROM
 *
 * check_eeprom_exist
 * return 0 if eeprom exist
 */
static int atl1_check_eeprom_exist(struct atl1_hw *hw)
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{
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	u32 value;
	value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
	if (value & SPI_FLASH_CTRL_EN_VPD) {
		value &= ~SPI_FLASH_CTRL_EN_VPD;
		iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
	}
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	value = ioread16(hw->hw_addr + REG_PCIE_CAP_LIST);
	return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
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}

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static bool atl1_read_eeprom(struct atl1_hw *hw, u32 offset, u32 *p_value)
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{
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	int i;
	u32 control;
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	if (offset & 3)
		/* address do not align */
		return false;
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	iowrite32(0, hw->hw_addr + REG_VPD_DATA);
	control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
	iowrite32(control, hw->hw_addr + REG_VPD_CAP);
	ioread32(hw->hw_addr + REG_VPD_CAP);
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	for (i = 0; i < 10; i++) {
		msleep(2);
		control = ioread32(hw->hw_addr + REG_VPD_CAP);
		if (control & VPD_CAP_VPD_FLAG)
			break;
	}
	if (control & VPD_CAP_VPD_FLAG) {
		*p_value = ioread32(hw->hw_addr + REG_VPD_DATA);
		return true;
	}
	/* timeout */
	return false;
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}

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/*
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 * Reads the value from a PHY register
 * hw - Struct containing variables accessed by shared code
 * reg_addr - address of the PHY register to read
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 */
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s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data)
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{
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	u32 val;
	int i;
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	val = ((u32) (reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
		MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW | MDIO_CLK_25_4 <<
		MDIO_CLK_SEL_SHIFT;
	iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
	ioread32(hw->hw_addr + REG_MDIO_CTRL);
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	for (i = 0; i < MDIO_WAIT_TIMES; i++) {
		udelay(2);
		val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
		if (!(val & (MDIO_START | MDIO_BUSY)))
			break;
	}
	if (!(val & (MDIO_START | MDIO_BUSY))) {
		*phy_data = (u16) val;
		return 0;
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	}
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	return ATLX_ERR_PHY;
}
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#define CUSTOM_SPI_CS_SETUP	2
#define CUSTOM_SPI_CLK_HI	2
#define CUSTOM_SPI_CLK_LO	2
#define CUSTOM_SPI_CS_HOLD	2
#define CUSTOM_SPI_CS_HI	3
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static bool atl1_spi_read(struct atl1_hw *hw, u32 addr, u32 *buf)
{
	int i;
	u32 value;
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	iowrite32(0, hw->hw_addr + REG_SPI_DATA);
	iowrite32(addr, hw->hw_addr + REG_SPI_ADDR);
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	value = SPI_FLASH_CTRL_WAIT_READY |
	    (CUSTOM_SPI_CS_SETUP & SPI_FLASH_CTRL_CS_SETUP_MASK) <<
	    SPI_FLASH_CTRL_CS_SETUP_SHIFT | (CUSTOM_SPI_CLK_HI &
					     SPI_FLASH_CTRL_CLK_HI_MASK) <<
	    SPI_FLASH_CTRL_CLK_HI_SHIFT | (CUSTOM_SPI_CLK_LO &
					   SPI_FLASH_CTRL_CLK_LO_MASK) <<
	    SPI_FLASH_CTRL_CLK_LO_SHIFT | (CUSTOM_SPI_CS_HOLD &
					   SPI_FLASH_CTRL_CS_HOLD_MASK) <<
	    SPI_FLASH_CTRL_CS_HOLD_SHIFT | (CUSTOM_SPI_CS_HI &
					    SPI_FLASH_CTRL_CS_HI_MASK) <<
	    SPI_FLASH_CTRL_CS_HI_SHIFT | (1 & SPI_FLASH_CTRL_INS_MASK) <<
	    SPI_FLASH_CTRL_INS_SHIFT;
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	iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
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	value |= SPI_FLASH_CTRL_START;
	iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
	ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
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	for (i = 0; i < 10; i++) {
		msleep(1);
		value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
		if (!(value & SPI_FLASH_CTRL_START))
			break;
	}
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	if (value & SPI_FLASH_CTRL_START)
		return false;
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	*buf = ioread32(hw->hw_addr + REG_SPI_DATA);
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	return true;
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}

/*
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 * get_permanent_address
 * return 0 if get valid mac address,
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 */
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static int atl1_get_permanent_address(struct atl1_hw *hw)
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{
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	u32 addr[2];
	u32 i, control;
	u16 reg;
	u8 eth_addr[ETH_ALEN];
	bool key_valid;
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	if (is_valid_ether_addr(hw->perm_mac_addr))
		return 0;

	/* init */
	addr[0] = addr[1] = 0;

	if (!atl1_check_eeprom_exist(hw)) {
		reg = 0;
		key_valid = false;
		/* Read out all EEPROM content */
		i = 0;
		while (1) {
			if (atl1_read_eeprom(hw, i + 0x100, &control)) {
				if (key_valid) {
					if (reg == REG_MAC_STA_ADDR)
						addr[0] = control;
					else if (reg == (REG_MAC_STA_ADDR + 4))
						addr[1] = control;
					key_valid = false;
				} else if ((control & 0xff) == 0x5A) {
					key_valid = true;
					reg = (u16) (control >> 16);
				} else
					break;
			} else
				/* read error */
				break;
			i += 4;
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		}
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		*(u32 *) &eth_addr[2] = swab32(addr[0]);
		*(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
		if (is_valid_ether_addr(eth_addr)) {
			memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
			return 0;
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		}
	}
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	/* see if SPI FLAGS exist ? */
	addr[0] = addr[1] = 0;
	reg = 0;
	key_valid = false;
	i = 0;
	while (1) {
		if (atl1_spi_read(hw, i + 0x1f000, &control)) {
			if (key_valid) {
				if (reg == REG_MAC_STA_ADDR)
					addr[0] = control;
				else if (reg == (REG_MAC_STA_ADDR + 4))
					addr[1] = control;
				key_valid = false;
			} else if ((control & 0xff) == 0x5A) {
				key_valid = true;
				reg = (u16) (control >> 16);
			} else
				/* data end */
				break;
		} else
			/* read error */
			break;
		i += 4;
	}
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	*(u32 *) &eth_addr[2] = swab32(addr[0]);
	*(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
	if (is_valid_ether_addr(eth_addr)) {
		memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
		return 0;
	}
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	/*
	 * On some motherboards, the MAC address is written by the
	 * BIOS directly to the MAC register during POST, and is
	 * not stored in eeprom.  If all else thus far has failed
	 * to fetch the permanent MAC address, try reading it directly.
	 */
	addr[0] = ioread32(hw->hw_addr + REG_MAC_STA_ADDR);
	addr[1] = ioread16(hw->hw_addr + (REG_MAC_STA_ADDR + 4));
	*(u32 *) &eth_addr[2] = swab32(addr[0]);
	*(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
	if (is_valid_ether_addr(eth_addr)) {
		memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
		return 0;
	}
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	return 1;
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}

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/*
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 * Reads the adapter's MAC address from the EEPROM
 * hw - Struct containing variables accessed by shared code
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 */
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s32 atl1_read_mac_addr(struct atl1_hw *hw)
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{
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	u16 i;
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	if (atl1_get_permanent_address(hw))
		random_ether_addr(hw->perm_mac_addr);
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	for (i = 0; i < ETH_ALEN; i++)
		hw->mac_addr[i] = hw->perm_mac_addr[i];
	return 0;
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}

/*
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 * Hashes an address to determine its location in the multicast table
 * hw - Struct containing variables accessed by shared code
 * mc_addr - the multicast address to hash
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 *
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 * atl1_hash_mc_addr
 *  purpose
 *      set hash value for a multicast address
 *      hash calcu processing :
 *          1. calcu 32bit CRC for multicast address
 *          2. reverse crc with MSB to LSB
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 */
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u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr)
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{
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	u32 crc32, value = 0;
	int i;
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	crc32 = ether_crc_le(6, mc_addr);
	for (i = 0; i < 32; i++)
		value |= (((crc32 >> i) & 1) << (31 - i));
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	return value;
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}

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/*
 * Sets the bit in the multicast table corresponding to the hash value.
 * hw - Struct containing variables accessed by shared code
 * hash_value - Multicast address hash value
 */
void atl1_hash_set(struct atl1_hw *hw, u32 hash_value)
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{
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	u32 hash_bit, hash_reg;
	u32 mta;

	/*
	 * The HASH Table  is a register array of 2 32-bit registers.
	 * It is treated like an array of 64 bits.  We want to set
	 * bit BitArray[hash_value]. So we figure out what register
	 * the bit is in, read it, OR in the new bit, then write
	 * back the new value.  The register is determined by the
	 * upper 7 bits of the hash value and the bit within that
	 * register are determined by the lower 5 bits of the value.
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	 */
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	hash_reg = (hash_value >> 31) & 0x1;
	hash_bit = (hash_value >> 26) & 0x1F;
	mta = ioread32((hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
	mta |= (1 << hash_bit);
	iowrite32(mta, (hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
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}
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/*
 * Writes a value to a PHY register
 * hw - Struct containing variables accessed by shared code
 * reg_addr - address of the PHY register to write
 * data - data to write to the PHY
 */
static s32 atl1_write_phy_reg(struct atl1_hw *hw, u32 reg_addr, u16 phy_data)
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{
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	int i;
	u32 val;
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	val = ((u32) (phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
	    (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
	    MDIO_SUP_PREAMBLE |
	    MDIO_START | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
	iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
	ioread32(hw->hw_addr + REG_MDIO_CTRL);
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	for (i = 0; i < MDIO_WAIT_TIMES; i++) {
		udelay(2);
		val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
		if (!(val & (MDIO_START | MDIO_BUSY)))
			break;
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	}
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	if (!(val & (MDIO_START | MDIO_BUSY)))
614
		return 0;
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	return ATLX_ERR_PHY;
}
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/*
 * Make L001's PHY out of Power Saving State (bug)
 * hw - Struct containing variables accessed by shared code
 * when power on, L001's PHY always on Power saving State
 * (Gigabit Link forbidden)
 */
static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw)
{
	s32 ret;
	ret = atl1_write_phy_reg(hw, 29, 0x0029);
	if (ret)
		return ret;
	return atl1_write_phy_reg(hw, 30, 0);
}

/*
 * Resets the PHY and make all config validate
 * hw - Struct containing variables accessed by shared code
 *
 * Sets bit 15 and 12 of the MII Control regiser (for F001 bug)
 */
static s32 atl1_phy_reset(struct atl1_hw *hw)
{
	struct pci_dev *pdev = hw->back->pdev;
	struct atl1_adapter *adapter = hw->back;
	s32 ret_val;
	u16 phy_data;

	if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
	    hw->media_type == MEDIA_TYPE_1000M_FULL)
		phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
	else {
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		switch (hw->media_type) {
		case MEDIA_TYPE_100M_FULL:
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			phy_data =
			    MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
			    MII_CR_RESET;
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			break;
		case MEDIA_TYPE_100M_HALF:
			phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
			break;
		case MEDIA_TYPE_10M_FULL:
			phy_data =
			    MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
			break;
664 665
		default:
			/* MEDIA_TYPE_10M_HALF: */
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			phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
			break;
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		}
	}

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	ret_val = atl1_write_phy_reg(hw, MII_BMCR, phy_data);
	if (ret_val) {
		u32 val;
		int i;
		/* pcie serdes link may be down! */
		if (netif_msg_hw(adapter))
			dev_dbg(&pdev->dev, "pcie phy link down\n");

		for (i = 0; i < 25; i++) {
			msleep(1);
			val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
			if (!(val & (MDIO_START | MDIO_BUSY)))
				break;
		}
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		if ((val & (MDIO_START | MDIO_BUSY)) != 0) {
			if (netif_msg_hw(adapter))
				dev_warn(&pdev->dev,
					"pcie link down at least 25ms\n");
			return ret_val;
		}
	}
693
	return 0;
694 695
}

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/*
 * Configures PHY autoneg and flow control advertisement settings
 * hw - Struct containing variables accessed by shared code
 */
static s32 atl1_phy_setup_autoneg_adv(struct atl1_hw *hw)
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{
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	s32 ret_val;
	s16 mii_autoneg_adv_reg;
	s16 mii_1000t_ctrl_reg;
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	/* Read the MII Auto-Neg Advertisement Register (Address 4). */
	mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
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	/* Read the MII 1000Base-T Control Register (Address 9). */
	mii_1000t_ctrl_reg = MII_ATLX_CR_1000T_DEFAULT_CAP_MASK;
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	/*
	 * First we clear all the 10/100 mb speed bits in the Auto-Neg
	 * Advertisement Register (Address 4) and the 1000 mb speed bits in
	 * the  1000Base-T Control Register (Address 9).
	 */
	mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
	mii_1000t_ctrl_reg &= ~MII_ATLX_CR_1000T_SPEED_MASK;
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	/*
	 * Need to parse media_type  and set up
	 * the appropriate PHY registers.
	 */
	switch (hw->media_type) {
	case MEDIA_TYPE_AUTO_SENSOR:
		mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
					MII_AR_10T_FD_CAPS |
					MII_AR_100TX_HD_CAPS |
					MII_AR_100TX_FD_CAPS);
		mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
		break;
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	case MEDIA_TYPE_1000M_FULL:
		mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
		break;
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	case MEDIA_TYPE_100M_FULL:
		mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
		break;
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	case MEDIA_TYPE_100M_HALF:
		mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
		break;
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	case MEDIA_TYPE_10M_FULL:
		mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
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		break;
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	default:
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		mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
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		break;
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	}

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	/* flow control fixed to enable all */
	mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
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	hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
	hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
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	ret_val = atl1_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
	if (ret_val)
		return ret_val;
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	ret_val = atl1_write_phy_reg(hw, MII_ATLX_CR, mii_1000t_ctrl_reg);
	if (ret_val)
		return ret_val;
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	return 0;
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}

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/*
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 * Configures link settings.
 * hw - Struct containing variables accessed by shared code
 * Assumes the hardware has previously been reset and the
 * transmitter and receiver are not enabled.
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 */
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static s32 atl1_setup_link(struct atl1_hw *hw)
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{
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	struct pci_dev *pdev = hw->back->pdev;
	struct atl1_adapter *adapter = hw->back;
	s32 ret_val;
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	/*
	 * Options:
	 *  PHY will advertise value(s) parsed from
	 *  autoneg_advertised and fc
	 *  no matter what autoneg is , We will not wait link result.
	 */
	ret_val = atl1_phy_setup_autoneg_adv(hw);
	if (ret_val) {
		if (netif_msg_link(adapter))
			dev_dbg(&pdev->dev,
				"error setting up autonegotiation\n");
		return ret_val;
	}
	/* SW.Reset , En-Auto-Neg if needed */
	ret_val = atl1_phy_reset(hw);
	if (ret_val) {
		if (netif_msg_link(adapter))
			dev_dbg(&pdev->dev, "error resetting phy\n");
		return ret_val;
	}
	hw->phy_configured = true;
	return ret_val;
}
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static void atl1_init_flash_opcode(struct atl1_hw *hw)
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{
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	if (hw->flash_vendor >= ARRAY_SIZE(flash_table))
		/* Atmel */
		hw->flash_vendor = 0;
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	/* Init OP table */
	iowrite8(flash_table[hw->flash_vendor].cmd_program,
		hw->hw_addr + REG_SPI_FLASH_OP_PROGRAM);
	iowrite8(flash_table[hw->flash_vendor].cmd_sector_erase,
		hw->hw_addr + REG_SPI_FLASH_OP_SC_ERASE);
	iowrite8(flash_table[hw->flash_vendor].cmd_chip_erase,
		hw->hw_addr + REG_SPI_FLASH_OP_CHIP_ERASE);
	iowrite8(flash_table[hw->flash_vendor].cmd_rdid,
		hw->hw_addr + REG_SPI_FLASH_OP_RDID);
	iowrite8(flash_table[hw->flash_vendor].cmd_wren,
		hw->hw_addr + REG_SPI_FLASH_OP_WREN);
	iowrite8(flash_table[hw->flash_vendor].cmd_rdsr,
		hw->hw_addr + REG_SPI_FLASH_OP_RDSR);
	iowrite8(flash_table[hw->flash_vendor].cmd_wrsr,
		hw->hw_addr + REG_SPI_FLASH_OP_WRSR);
	iowrite8(flash_table[hw->flash_vendor].cmd_read,
		hw->hw_addr + REG_SPI_FLASH_OP_READ);
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}

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/*
 * Performs basic configuration of the adapter.
 * hw - Struct containing variables accessed by shared code
 * Assumes that the controller has previously been reset and is in a
 * post-reset uninitialized state. Initializes multicast table,
 * and  Calls routines to setup link
 * Leaves the transmit and receive units disabled and uninitialized.
 */
static s32 atl1_init_hw(struct atl1_hw *hw)
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{
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	u32 ret_val = 0;
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	/* Zero out the Multicast HASH table */
	iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
	/* clear the old settings from the multicast hash table */
	iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
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	atl1_init_flash_opcode(hw);
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	if (!hw->phy_configured) {
		/* enable GPHY LinkChange Interrrupt */
		ret_val = atl1_write_phy_reg(hw, 18, 0xC00);
		if (ret_val)
			return ret_val;
		/* make PHY out of power-saving state */
		ret_val = atl1_phy_leave_power_saving(hw);
		if (ret_val)
			return ret_val;
		/* Call a subroutine to configure the link */
		ret_val = atl1_setup_link(hw);
	}
	return ret_val;
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}

/*
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 * Detects the current speed and duplex settings of the hardware.
 * hw - Struct containing variables accessed by shared code
 * speed - Speed of the connection
 * duplex - Duplex setting of the connection
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 */
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static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex)
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{
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	struct pci_dev *pdev = hw->back->pdev;
	struct atl1_adapter *adapter = hw->back;
	s32 ret_val;
	u16 phy_data;
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	/* ; --- Read   PHY Specific Status Register (17) */
	ret_val = atl1_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data);
	if (ret_val)
		return ret_val;
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	if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED))
		return ATLX_ERR_PHY_RES;
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	switch (phy_data & MII_ATLX_PSSR_SPEED) {
	case MII_ATLX_PSSR_1000MBS:
		*speed = SPEED_1000;
		break;
	case MII_ATLX_PSSR_100MBS:
		*speed = SPEED_100;
		break;
	case MII_ATLX_PSSR_10MBS:
		*speed = SPEED_10;
		break;
	default:
		if (netif_msg_hw(adapter))
			dev_dbg(&pdev->dev, "error getting speed\n");
		return ATLX_ERR_PHY_SPEED;
		break;
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	}
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	if (phy_data & MII_ATLX_PSSR_DPLX)
		*duplex = FULL_DUPLEX;
	else
		*duplex = HALF_DUPLEX;

	return 0;
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}
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void atl1_set_mac_addr(struct atl1_hw *hw)
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{
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	u32 value;
	/*
	 * 00-0B-6A-F6-00-DC
	 * 0:  6AF600DC   1: 000B
	 * low dword
	 */
	value = (((u32) hw->mac_addr[2]) << 24) |
	    (((u32) hw->mac_addr[3]) << 16) |
	    (((u32) hw->mac_addr[4]) << 8) | (((u32) hw->mac_addr[5]));
	iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
	/* high dword */
	value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
	iowrite32(value, (hw->hw_addr + REG_MAC_STA_ADDR) + (1 << 2));
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}
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/*
 * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
 * @adapter: board private structure to initialize
 *
 * atl1_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 atl1_sw_init(struct atl1_adapter *adapter)
{
	struct atl1_hw *hw = &adapter->hw;
	struct net_device *netdev = adapter->netdev;

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	hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
942
	hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
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	adapter->wol = 0;
	adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7;
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	adapter->ict = 50000;		/* 100ms */
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	adapter->link_speed = SPEED_0;	/* hardware init */
	adapter->link_duplex = FULL_DUPLEX;

	hw->phy_configured = false;
	hw->preamble_len = 7;
	hw->ipgt = 0x60;
	hw->min_ifg = 0x50;
	hw->ipgr1 = 0x40;
	hw->ipgr2 = 0x60;
	hw->max_retry = 0xf;
	hw->lcol = 0x37;
	hw->jam_ipg = 7;
	hw->rfd_burst = 8;
	hw->rrd_burst = 8;
	hw->rfd_fetch_gap = 1;
	hw->rx_jumbo_th = adapter->rx_buffer_len / 8;
	hw->rx_jumbo_lkah = 1;
	hw->rrd_ret_timer = 16;
	hw->tpd_burst = 4;
	hw->tpd_fetch_th = 16;
	hw->txf_burst = 0x100;
	hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3;
	hw->tpd_fetch_gap = 1;
	hw->rcb_value = atl1_rcb_64;
	hw->dma_ord = atl1_dma_ord_enh;
	hw->dmar_block = atl1_dma_req_256;
	hw->dmaw_block = atl1_dma_req_256;
	hw->cmb_rrd = 4;
	hw->cmb_tpd = 4;
	hw->cmb_rx_timer = 1;	/* about 2us */
	hw->cmb_tx_timer = 1;	/* about 2us */
	hw->smb_timer = 100000;	/* about 200ms */

	spin_lock_init(&adapter->lock);
	spin_lock_init(&adapter->mb_lock);

	return 0;
}

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static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	u16 result;

	atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);

	return result;
}

static void mdio_write(struct net_device *netdev, int phy_id, int reg_num,
	int val)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);

	atl1_write_phy_reg(&adapter->hw, reg_num, val);
}

/*
 * atl1_mii_ioctl -
 * @netdev:
 * @ifreq:
 * @cmd:
 */
static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	unsigned long flags;
	int retval;

	if (!netif_running(netdev))
		return -EINVAL;

	spin_lock_irqsave(&adapter->lock, flags);
	retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
	spin_unlock_irqrestore(&adapter->lock, flags);

	return retval;
}

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/*
 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
 * @adapter: board private structure
 *
 * Return 0 on success, negative on failure
 */
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static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
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{
	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
	struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
	struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
	struct atl1_ring_header *ring_header = &adapter->ring_header;
	struct pci_dev *pdev = adapter->pdev;
	int size;
	u8 offset = 0;

	size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count);
	tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
	if (unlikely(!tpd_ring->buffer_info)) {
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		if (netif_msg_drv(adapter))
			dev_err(&pdev->dev, "kzalloc failed , size = D%d\n",
				size);
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		goto err_nomem;
	}
	rfd_ring->buffer_info =
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		(struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
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	/*
	 * real ring DMA buffer
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	 * each ring/block may need up to 8 bytes for alignment, hence the
	 * additional 40 bytes tacked onto the end.
	 */
	ring_header->size = size =
		sizeof(struct tx_packet_desc) * tpd_ring->count
		+ sizeof(struct rx_free_desc) * rfd_ring->count
		+ sizeof(struct rx_return_desc) * rrd_ring->count
		+ sizeof(struct coals_msg_block)
		+ sizeof(struct stats_msg_block)
		+ 40;
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	ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
J
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		&ring_header->dma);
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	if (unlikely(!ring_header->desc)) {
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		if (netif_msg_drv(adapter))
			dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
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		goto err_nomem;
	}

	memset(ring_header->desc, 0, ring_header->size);

	/* init TPD ring */
	tpd_ring->dma = ring_header->dma;
	offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
	tpd_ring->dma += offset;
	tpd_ring->desc = (u8 *) ring_header->desc + offset;
	tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count;

	/* init RFD ring */
	rfd_ring->dma = tpd_ring->dma + tpd_ring->size;
	offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0;
	rfd_ring->dma += offset;
	rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset);
	rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count;
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	/* init RRD ring */
	rrd_ring->dma = rfd_ring->dma + rfd_ring->size;
	offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0;
	rrd_ring->dma += offset;
	rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset);
	rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count;
1097

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	/* init CMB */
	adapter->cmb.dma = rrd_ring->dma + rrd_ring->size;
	offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0;
	adapter->cmb.dma += offset;
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	adapter->cmb.cmb = (struct coals_msg_block *)
		((u8 *) rrd_ring->desc + (rrd_ring->size + offset));
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	/* init SMB */
	adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block);
	offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0;
	adapter->smb.dma += offset;
	adapter->smb.smb = (struct stats_msg_block *)
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		((u8 *) adapter->cmb.cmb +
		(sizeof(struct coals_msg_block) + offset));
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	return 0;
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err_nomem:
	kfree(tpd_ring->buffer_info);
	return -ENOMEM;
}

1121
static void atl1_init_ring_ptrs(struct atl1_adapter *adapter)
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{
1123 1124 1125
	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
	struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
	struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
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1127 1128
	atomic_set(&tpd_ring->next_to_use, 0);
	atomic_set(&tpd_ring->next_to_clean, 0);
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1130 1131 1132 1133 1134
	rfd_ring->next_to_clean = 0;
	atomic_set(&rfd_ring->next_to_use, 0);

	rrd_ring->next_to_use = 0;
	atomic_set(&rrd_ring->next_to_clean, 0);
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}

/*
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 * atl1_clean_rx_ring - Free RFD Buffers
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 * @adapter: board private structure
 */
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static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
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{
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	struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
	struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
	struct atl1_buffer *buffer_info;
	struct pci_dev *pdev = adapter->pdev;
	unsigned long size;
	unsigned int i;
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	/* Free all the Rx ring sk_buffs */
	for (i = 0; i < rfd_ring->count; i++) {
		buffer_info = &rfd_ring->buffer_info[i];
		if (buffer_info->dma) {
			pci_unmap_page(pdev, buffer_info->dma,
				buffer_info->length, PCI_DMA_FROMDEVICE);
			buffer_info->dma = 0;
		}
		if (buffer_info->skb) {
			dev_kfree_skb(buffer_info->skb);
			buffer_info->skb = NULL;
		}
	}
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	size = sizeof(struct atl1_buffer) * rfd_ring->count;
	memset(rfd_ring->buffer_info, 0, size);
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	/* Zero out the descriptor ring */
	memset(rfd_ring->desc, 0, rfd_ring->size);
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	rfd_ring->next_to_clean = 0;
	atomic_set(&rfd_ring->next_to_use, 0);
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	rrd_ring->next_to_use = 0;
	atomic_set(&rrd_ring->next_to_clean, 0);
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}

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/*
 * atl1_clean_tx_ring - Free Tx Buffers
 * @adapter: board private structure
 */
static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
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{
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	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
	struct atl1_buffer *buffer_info;
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	struct pci_dev *pdev = adapter->pdev;
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	unsigned long size;
	unsigned int i;
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1188

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	/* Free all the Tx ring sk_buffs */
	for (i = 0; i < tpd_ring->count; i++) {
		buffer_info = &tpd_ring->buffer_info[i];
		if (buffer_info->dma) {
			pci_unmap_page(pdev, buffer_info->dma,
				buffer_info->length, PCI_DMA_TODEVICE);
			buffer_info->dma = 0;
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		}
	}

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	for (i = 0; i < tpd_ring->count; i++) {
		buffer_info = &tpd_ring->buffer_info[i];
		if (buffer_info->skb) {
			dev_kfree_skb_any(buffer_info->skb);
			buffer_info->skb = NULL;
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		}
	}

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	size = sizeof(struct atl1_buffer) * tpd_ring->count;
	memset(tpd_ring->buffer_info, 0, size);
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	/* Zero out the descriptor ring */
	memset(tpd_ring->desc, 0, tpd_ring->size);
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J
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	atomic_set(&tpd_ring->next_to_use, 0);
	atomic_set(&tpd_ring->next_to_clean, 0);
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}

/*
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 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
 * @adapter: board private structure
 *
 * Free all transmit software resources
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 */
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static void atl1_free_ring_resources(struct atl1_adapter *adapter)
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{
	struct pci_dev *pdev = adapter->pdev;
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	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
	struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
	struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
	struct atl1_ring_header *ring_header = &adapter->ring_header;
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J
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	atl1_clean_tx_ring(adapter);
	atl1_clean_rx_ring(adapter);
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	kfree(tpd_ring->buffer_info);
	pci_free_consistent(pdev, ring_header->size, ring_header->desc,
		ring_header->dma);
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	tpd_ring->buffer_info = NULL;
	tpd_ring->desc = NULL;
	tpd_ring->dma = 0;
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J
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	rfd_ring->buffer_info = NULL;
	rfd_ring->desc = NULL;
	rfd_ring->dma = 0;
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	rrd_ring->desc = NULL;
	rrd_ring->dma = 0;
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}

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static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
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{
	u32 value;
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1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
	struct atl1_hw *hw = &adapter->hw;
	struct net_device *netdev = adapter->netdev;
	/* Config MAC CTRL Register */
	value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
	/* duplex */
	if (FULL_DUPLEX == adapter->link_duplex)
		value |= MAC_CTRL_DUPLX;
	/* speed */
	value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
			 MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
		  MAC_CTRL_SPEED_SHIFT);
	/* flow control */
	value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
	/* PAD & CRC */
	value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
	/* preamble length */
	value |= (((u32) adapter->hw.preamble_len
		   & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
	/* vlan */
	if (adapter->vlgrp)
		value |= MAC_CTRL_RMV_VLAN;
	/* rx checksum
	   if (adapter->rx_csum)
	   value |= MAC_CTRL_RX_CHKSUM_EN;
	 */
	/* filter mode */
	value |= MAC_CTRL_BC_EN;
	if (netdev->flags & IFF_PROMISC)
		value |= MAC_CTRL_PROMIS_EN;
	else if (netdev->flags & IFF_ALLMULTI)
		value |= MAC_CTRL_MC_ALL_EN;
	/* value |= MAC_CTRL_LOOPBACK; */
	iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
}
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static u32 atl1_check_link(struct atl1_adapter *adapter)
{
	struct atl1_hw *hw = &adapter->hw;
	struct net_device *netdev = adapter->netdev;
	u32 ret_val;
	u16 speed, duplex, phy_data;
	int reconfig = 0;
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	/* MII_BMSR must read twice */
	atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
	atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
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	if (!(phy_data & BMSR_LSTATUS)) {
		/* link down */
		if (netif_carrier_ok(netdev)) {
			/* old link state: Up */
			if (netif_msg_link(adapter))
				dev_info(&adapter->pdev->dev, "link is down\n");
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			adapter->link_speed = SPEED_0;
			netif_carrier_off(netdev);
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1307
		}
J
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1308
		return 0;
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1309 1310
	}

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1311 1312 1313 1314
	/* Link Up */
	ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
	if (ret_val)
		return ret_val;
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1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
	switch (hw->media_type) {
	case MEDIA_TYPE_1000M_FULL:
		if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
			reconfig = 1;
		break;
	case MEDIA_TYPE_100M_FULL:
		if (speed != SPEED_100 || duplex != FULL_DUPLEX)
			reconfig = 1;
		break;
	case MEDIA_TYPE_100M_HALF:
		if (speed != SPEED_100 || duplex != HALF_DUPLEX)
			reconfig = 1;
		break;
	case MEDIA_TYPE_10M_FULL:
		if (speed != SPEED_10 || duplex != FULL_DUPLEX)
			reconfig = 1;
		break;
	case MEDIA_TYPE_10M_HALF:
		if (speed != SPEED_10 || duplex != HALF_DUPLEX)
			reconfig = 1;
		break;
	}
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	/* link result is our setting */
	if (!reconfig) {
		if (adapter->link_speed != speed
		    || adapter->link_duplex != duplex) {
			adapter->link_speed = speed;
			adapter->link_duplex = duplex;
			atl1_setup_mac_ctrl(adapter);
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			if (netif_msg_link(adapter))
				dev_info(&adapter->pdev->dev,
					"%s link is up %d Mbps %s\n",
					netdev->name, adapter->link_speed,
					adapter->link_duplex == FULL_DUPLEX ?
					"full duplex" : "half duplex");
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		}
J
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1353 1354
		if (!netif_carrier_ok(netdev)) {
			/* Link down -> Up */
J
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1355 1356
			netif_carrier_on(netdev);
		}
J
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1357
		return 0;
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1358 1359
	}

J
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1360
	/* change original link status */
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1361 1362 1363 1364
	if (netif_carrier_ok(netdev)) {
		adapter->link_speed = SPEED_0;
		netif_carrier_off(netdev);
		netif_stop_queue(netdev);
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	}

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1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
	if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
	    hw->media_type != MEDIA_TYPE_1000M_FULL) {
		switch (hw->media_type) {
		case MEDIA_TYPE_100M_FULL:
			phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
			           MII_CR_RESET;
			break;
		case MEDIA_TYPE_100M_HALF:
			phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
			break;
		case MEDIA_TYPE_10M_FULL:
			phy_data =
			    MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
			break;
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		default:
			/* MEDIA_TYPE_10M_HALF: */
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1383 1384
			phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
			break;
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		}
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1386
		atl1_write_phy_reg(hw, MII_BMCR, phy_data);
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1387
		return 0;
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	}

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1390 1391 1392
	/* auto-neg, insert timer to re-config phy */
	if (!adapter->phy_timer_pending) {
		adapter->phy_timer_pending = true;
S
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		mod_timer(&adapter->phy_config_timer,
			  round_jiffies(jiffies + 3 * HZ));
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	}

J
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1397 1398
	return 0;
}
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static void set_flow_ctrl_old(struct atl1_adapter *adapter)
{
	u32 hi, lo, value;
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	/* RFD Flow Control */
	value = adapter->rfd_ring.count;
	hi = value / 16;
	if (hi < 2)
		hi = 2;
	lo = value * 7 / 8;
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	value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
		((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
	iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
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	/* RRD Flow Control */
	value = adapter->rrd_ring.count;
	lo = value / 16;
	hi = value * 7 / 8;
	if (lo < 2)
		lo = 2;
	value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
		((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
	iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
}
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static void set_flow_ctrl_new(struct atl1_hw *hw)
{
	u32 hi, lo, value;

	/* RXF Flow Control */
	value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
	lo = value / 16;
	if (lo < 192)
		lo = 192;
	hi = value * 7 / 8;
	if (hi < lo)
		hi = lo + 16;
	value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
		((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
	iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);

	/* RRD Flow Control */
	value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
	lo = value / 8;
	hi = value * 7 / 8;
	if (lo < 2)
		lo = 2;
	if (hi < lo)
		hi = lo + 3;
	value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
		((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
	iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
}

/*
 * atl1_configure - Configure Transmit&Receive Unit after Reset
 * @adapter: board private structure
 *
 * Configure the Tx /Rx unit of the MAC after a reset.
 */
static u32 atl1_configure(struct atl1_adapter *adapter)
{
	struct atl1_hw *hw = &adapter->hw;
	u32 value;

	/* clear interrupt status */
	iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);

	/* set MAC Address */
	value = (((u32) hw->mac_addr[2]) << 24) |
		(((u32) hw->mac_addr[3]) << 16) |
		(((u32) hw->mac_addr[4]) << 8) |
		(((u32) hw->mac_addr[5]));
	iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
	value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
	iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));

	/* tx / rx ring */
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	/* HI base address */
	iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
		hw->hw_addr + REG_DESC_BASE_ADDR_HI);
	/* LO base address */
	iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
		hw->hw_addr + REG_DESC_RFD_ADDR_LO);
	iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
		hw->hw_addr + REG_DESC_RRD_ADDR_LO);
	iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
		hw->hw_addr + REG_DESC_TPD_ADDR_LO);
	iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
		hw->hw_addr + REG_DESC_CMB_ADDR_LO);
	iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
		hw->hw_addr + REG_DESC_SMB_ADDR_LO);
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	/* element count */
	value = adapter->rrd_ring.count;
	value <<= 16;
	value += adapter->rfd_ring.count;
	iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
	iowrite32(adapter->tpd_ring.count, hw->hw_addr +
		REG_DESC_TPD_RING_SIZE);
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	/* Load Ptr */
	iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
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	/* config Mailbox */
	value = ((atomic_read(&adapter->tpd_ring.next_to_use)
		  & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
		((atomic_read(&adapter->rrd_ring.next_to_clean)
		& MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
		((atomic_read(&adapter->rfd_ring.next_to_use)
		& MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
	iowrite32(value, hw->hw_addr + REG_MAILBOX);
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	/* config IPG/IFG */
	value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
		 << MAC_IPG_IFG_IPGT_SHIFT) |
		(((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
		<< MAC_IPG_IFG_MIFG_SHIFT) |
		(((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
		<< MAC_IPG_IFG_IPGR1_SHIFT) |
		(((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
		<< MAC_IPG_IFG_IPGR2_SHIFT);
	iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
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	/* config  Half-Duplex Control */
	value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
		(((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
		<< MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
		MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
		(0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
		(((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
		<< MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
	iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
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	/* set Interrupt Moderator Timer */
	iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
	iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
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	/* set Interrupt Clear Timer */
	iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
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	/* set max frame size hw will accept */
	iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU);
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	/* jumbo size & rrd retirement timer */
	value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
		 << RXQ_JMBOSZ_TH_SHIFT) |
		(((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
		<< RXQ_JMBO_LKAH_SHIFT) |
		(((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
		<< RXQ_RRD_TIMER_SHIFT);
	iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
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	/* Flow Control */
	switch (hw->dev_rev) {
	case 0x8001:
	case 0x9001:
	case 0x9002:
	case 0x9003:
		set_flow_ctrl_old(adapter);
		break;
	default:
		set_flow_ctrl_new(hw);
		break;
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	}

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	/* config TXQ */
	value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
		 << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
		(((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
		<< TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
		(((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
		<< TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE |
		TXQ_CTRL_EN;
	iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
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	/* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
	value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
		<< TX_JUMBO_TASK_TH_SHIFT) |
		(((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
		<< TX_TPD_MIN_IPG_SHIFT);
	iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
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	/* config RXQ */
	value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
		<< RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
		(((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
		<< RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
		(((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
		<< RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN |
		RXQ_CTRL_EN;
	iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
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	/* config DMA Engine */
	value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
		<< DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
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		((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
		<< DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN |
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		DMA_CTRL_DMAW_EN;
	value |= (u32) hw->dma_ord;
	if (atl1_rcb_128 == hw->rcb_value)
		value |= DMA_CTRL_RCB_VALUE;
	iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
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	/* config CMB / SMB */
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	value = (hw->cmb_tpd > adapter->tpd_ring.count) ?
		hw->cmb_tpd : adapter->tpd_ring.count;
	value <<= 16;
	value |= hw->cmb_rrd;
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	iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
	value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
	iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
	iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
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	/* --- enable CMB / SMB */
	value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
	iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
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	value = ioread32(adapter->hw.hw_addr + REG_ISR);
	if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
		value = 1;	/* config failed */
	else
		value = 0;
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	/* clear all interrupt status */
	iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
	iowrite32(0, adapter->hw.hw_addr + REG_ISR);
	return value;
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}

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/*
 * atl1_pcie_patch - Patch for PCIE module
 */
static void atl1_pcie_patch(struct atl1_adapter *adapter)
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{
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	u32 value;
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	/* much vendor magic here */
	value = 0x6500;
	iowrite32(value, adapter->hw.hw_addr + 0x12FC);
	/* pcie flow control mode change */
	value = ioread32(adapter->hw.hw_addr + 0x1008);
	value |= 0x8000;
	iowrite32(value, adapter->hw.hw_addr + 0x1008);
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}

/*
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 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
 * on PCI Command register is disable.
 * The function enable this bit.
 * Brackett, 2006/03/15
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 */
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static void atl1_via_workaround(struct atl1_adapter *adapter)
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{
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	unsigned long value;
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	value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
	if (value & PCI_COMMAND_INTX_DISABLE)
		value &= ~PCI_COMMAND_INTX_DISABLE;
	iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
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}

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static void atl1_inc_smb(struct atl1_adapter *adapter)
{
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	struct net_device *netdev = adapter->netdev;
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	struct stats_msg_block *smb = adapter->smb.smb;
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	/* Fill out the OS statistics structure */
	adapter->soft_stats.rx_packets += smb->rx_ok;
	adapter->soft_stats.tx_packets += smb->tx_ok;
	adapter->soft_stats.rx_bytes += smb->rx_byte_cnt;
	adapter->soft_stats.tx_bytes += smb->tx_byte_cnt;
	adapter->soft_stats.multicast += smb->rx_mcast;
	adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 +
		smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry);
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	/* Rx Errors */
	adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err +
		smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov +
		smb->rx_rrd_ov + smb->rx_align_err);
	adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov;
	adapter->soft_stats.rx_length_errors += smb->rx_len_err;
	adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err;
	adapter->soft_stats.rx_frame_errors += smb->rx_align_err;
	adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov +
		smb->rx_rxf_ov);
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	adapter->soft_stats.rx_pause += smb->rx_pause;
	adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov;
	adapter->soft_stats.rx_trunc += smb->rx_sz_ov;
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	/* Tx Errors */
	adapter->soft_stats.tx_errors += (smb->tx_late_col +
		smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc);
	adapter->soft_stats.tx_fifo_errors += smb->tx_underrun;
	adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col;
	adapter->soft_stats.tx_window_errors += smb->tx_late_col;
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	adapter->soft_stats.excecol += smb->tx_abort_col;
	adapter->soft_stats.deffer += smb->tx_defer;
	adapter->soft_stats.scc += smb->tx_1_col;
	adapter->soft_stats.mcc += smb->tx_2_col;
	adapter->soft_stats.latecol += smb->tx_late_col;
	adapter->soft_stats.tx_underun += smb->tx_underrun;
	adapter->soft_stats.tx_trunc += smb->tx_trunc;
	adapter->soft_stats.tx_pause += smb->tx_pause;
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	netdev->stats.rx_packets = adapter->soft_stats.rx_packets;
	netdev->stats.tx_packets = adapter->soft_stats.tx_packets;
	netdev->stats.rx_bytes = adapter->soft_stats.rx_bytes;
	netdev->stats.tx_bytes = adapter->soft_stats.tx_bytes;
	netdev->stats.multicast = adapter->soft_stats.multicast;
	netdev->stats.collisions = adapter->soft_stats.collisions;
	netdev->stats.rx_errors = adapter->soft_stats.rx_errors;
	netdev->stats.rx_over_errors =
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		adapter->soft_stats.rx_missed_errors;
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	netdev->stats.rx_length_errors =
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		adapter->soft_stats.rx_length_errors;
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	netdev->stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors;
	netdev->stats.rx_frame_errors =
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		adapter->soft_stats.rx_frame_errors;
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	netdev->stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors;
	netdev->stats.rx_missed_errors =
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		adapter->soft_stats.rx_missed_errors;
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	netdev->stats.tx_errors = adapter->soft_stats.tx_errors;
	netdev->stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors;
	netdev->stats.tx_aborted_errors =
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		adapter->soft_stats.tx_aborted_errors;
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	netdev->stats.tx_window_errors =
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		adapter->soft_stats.tx_window_errors;
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	netdev->stats.tx_carrier_errors =
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		adapter->soft_stats.tx_carrier_errors;
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}

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static void atl1_update_mailbox(struct atl1_adapter *adapter)
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{
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	unsigned long flags;
	u32 tpd_next_to_use;
	u32 rfd_next_to_use;
	u32 rrd_next_to_clean;
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	u32 value;

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	spin_lock_irqsave(&adapter->mb_lock, flags);
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	tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
	rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
	rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
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	value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
		MB_RFD_PROD_INDX_SHIFT) |
		((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
		MB_RRD_CONS_INDX_SHIFT) |
		((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
		MB_TPD_PROD_INDX_SHIFT);
	iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
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	spin_unlock_irqrestore(&adapter->mb_lock, flags);
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}

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static void atl1_clean_alloc_flag(struct atl1_adapter *adapter,
	struct rx_return_desc *rrd, u16 offset)
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{
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	struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
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	while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) {
		rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0;
		if (++rfd_ring->next_to_clean == rfd_ring->count) {
			rfd_ring->next_to_clean = 0;
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		}
	}
J
Jay Cliburn 已提交
1772
}
J
Jay Cliburn 已提交
1773

J
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1774 1775 1776 1777
static void atl1_update_rfd_index(struct atl1_adapter *adapter,
	struct rx_return_desc *rrd)
{
	u16 num_buf;
J
Jay Cliburn 已提交
1778

J
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1779 1780 1781 1782 1783 1784
	num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) /
		adapter->rx_buffer_len;
	if (rrd->num_buf == num_buf)
		/* clean alloc flag for bad rrd */
		atl1_clean_alloc_flag(adapter, rrd, num_buf);
}
J
Jay Cliburn 已提交
1785

J
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1786 1787 1788 1789
static void atl1_rx_checksum(struct atl1_adapter *adapter,
	struct rx_return_desc *rrd, struct sk_buff *skb)
{
	struct pci_dev *pdev = adapter->pdev;
J
Jay Cliburn 已提交
1790

1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801
	/*
	 * The L1 hardware contains a bug that erroneously sets the
	 * PACKET_FLAG_ERR and ERR_FLAG_L4_CHKSUM bits whenever a
	 * fragmented IP packet is received, even though the packet
	 * is perfectly valid and its checksum is correct. There's
	 * no way to distinguish between one of these good packets
	 * and a packet that actually contains a TCP/UDP checksum
	 * error, so all we can do is allow it to be handed up to
	 * the higher layers and let it be sorted out there.
	 */

J
Jay Cliburn 已提交
1802
	skb->ip_summed = CHECKSUM_NONE;
J
Jay Cliburn 已提交
1803

J
Jay Cliburn 已提交
1804 1805 1806 1807
	if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
		if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC |
					ERR_FLAG_CODE | ERR_FLAG_OV)) {
			adapter->hw_csum_err++;
J
Jay Cliburn 已提交
1808 1809 1810
			if (netif_msg_rx_err(adapter))
				dev_printk(KERN_DEBUG, &pdev->dev,
					"rx checksum error\n");
J
Jay Cliburn 已提交
1811
			return;
J
Jay Cliburn 已提交
1812 1813 1814
		}
	}

J
Jay Cliburn 已提交
1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825
	/* not IPv4 */
	if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
		/* checksum is invalid, but it's not an IPv4 pkt, so ok */
		return;

	/* IPv4 packet */
	if (likely(!(rrd->err_flg &
		(ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) {
		skb->ip_summed = CHECKSUM_UNNECESSARY;
		adapter->hw_csum_good++;
		return;
J
Jay Cliburn 已提交
1826 1827
	}

J
Jay Cliburn 已提交
1828
	return;
J
Jay Cliburn 已提交
1829 1830
}

J
Jay Cliburn 已提交
1831 1832 1833 1834 1835
/*
 * atl1_alloc_rx_buffers - Replace used receive buffers
 * @adapter: address of board private structure
 */
static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
J
Jay Cliburn 已提交
1836
{
J
Jay Cliburn 已提交
1837 1838 1839 1840 1841 1842 1843 1844 1845
	struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
	struct pci_dev *pdev = adapter->pdev;
	struct page *page;
	unsigned long offset;
	struct atl1_buffer *buffer_info, *next_info;
	struct sk_buff *skb;
	u16 num_alloc = 0;
	u16 rfd_next_to_use, next_next;
	struct rx_free_desc *rfd_desc;
J
Jay Cliburn 已提交
1846

J
Jay Cliburn 已提交
1847 1848 1849 1850 1851
	next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
	if (++next_next == rfd_ring->count)
		next_next = 0;
	buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
	next_info = &rfd_ring->buffer_info[next_next];
J
Jay Cliburn 已提交
1852

J
Jay Cliburn 已提交
1853 1854 1855 1856 1857
	while (!buffer_info->alloced && !next_info->alloced) {
		if (buffer_info->skb) {
			buffer_info->alloced = 1;
			goto next;
		}
J
Jay Cliburn 已提交
1858

J
Jay Cliburn 已提交
1859
		rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
J
Jay Cliburn 已提交
1860

S
Stephen Hemminger 已提交
1861 1862
		skb = netdev_alloc_skb(adapter->netdev,
				       adapter->rx_buffer_len + NET_IP_ALIGN);
J
Jay Cliburn 已提交
1863 1864
		if (unlikely(!skb)) {
			/* Better luck next round */
1865
			adapter->netdev->stats.rx_dropped++;
J
Jay Cliburn 已提交
1866 1867
			break;
		}
J
Jay Cliburn 已提交
1868

J
Jay Cliburn 已提交
1869 1870 1871 1872 1873 1874
		/*
		 * Make buffer alignment 2 beyond a 16 byte boundary
		 * this will result in a 16 byte aligned IP header after
		 * the 14 byte MAC header is removed
		 */
		skb_reserve(skb, NET_IP_ALIGN);
J
Jay Cliburn 已提交
1875

J
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1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886
		buffer_info->alloced = 1;
		buffer_info->skb = skb;
		buffer_info->length = (u16) adapter->rx_buffer_len;
		page = virt_to_page(skb->data);
		offset = (unsigned long)skb->data & ~PAGE_MASK;
		buffer_info->dma = pci_map_page(pdev, page, offset,
						adapter->rx_buffer_len,
						PCI_DMA_FROMDEVICE);
		rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
		rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
		rfd_desc->coalese = 0;
J
Jay Cliburn 已提交
1887

J
Jay Cliburn 已提交
1888 1889 1890 1891
next:
		rfd_next_to_use = next_next;
		if (unlikely(++next_next == rfd_ring->count))
			next_next = 0;
J
Jay Cliburn 已提交
1892

J
Jay Cliburn 已提交
1893 1894 1895 1896
		buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
		next_info = &rfd_ring->buffer_info[next_next];
		num_alloc++;
	}
J
Jay Cliburn 已提交
1897

J
Jay Cliburn 已提交
1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908
	if (num_alloc) {
		/*
		 * 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();
		atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
	}
	return num_alloc;
J
Jay Cliburn 已提交
1909 1910
}

J
Jay Cliburn 已提交
1911
static void atl1_intr_rx(struct atl1_adapter *adapter)
J
Jay Cliburn 已提交
1912
{
J
Jay Cliburn 已提交
1913 1914 1915
	int i, count;
	u16 length;
	u16 rrd_next_to_clean;
J
Jay Cliburn 已提交
1916
	u32 value;
J
Jay Cliburn 已提交
1917 1918 1919 1920 1921
	struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
	struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
	struct atl1_buffer *buffer_info;
	struct rx_return_desc *rrd;
	struct sk_buff *skb;
J
Jay Cliburn 已提交
1922

J
Jay Cliburn 已提交
1923
	count = 0;
J
Jay Cliburn 已提交
1924

J
Jay Cliburn 已提交
1925
	rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
J
Jay Cliburn 已提交
1926

J
Jay Cliburn 已提交
1927 1928 1929 1930 1931 1932 1933 1934
	while (1) {
		rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
		i = 1;
		if (likely(rrd->xsz.valid)) {	/* packet valid */
chk_rrd:
			/* check rrd status */
			if (likely(rrd->num_buf == 1))
				goto rrd_ok;
J
Jay Cliburn 已提交
1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956
			else if (netif_msg_rx_err(adapter)) {
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"unexpected RRD buffer count\n");
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"rx_buf_len = %d\n",
					adapter->rx_buffer_len);
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"RRD num_buf = %d\n",
					rrd->num_buf);
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"RRD pkt_len = %d\n",
					rrd->xsz.xsum_sz.pkt_size);
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"RRD pkt_flg = 0x%08X\n",
					rrd->pkt_flg);
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"RRD err_flg = 0x%08X\n",
					rrd->err_flg);
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"RRD vlan_tag = 0x%08X\n",
					rrd->vlan_tag);
			}
J
Jay Cliburn 已提交
1957

J
Jay Cliburn 已提交
1958 1959 1960 1961 1962 1963 1964
			/* rrd seems to be bad */
			if (unlikely(i-- > 0)) {
				/* rrd may not be DMAed completely */
				udelay(1);
				goto chk_rrd;
			}
			/* bad rrd */
J
Jay Cliburn 已提交
1965 1966 1967
			if (netif_msg_rx_err(adapter))
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"bad RRD\n");
J
Jay Cliburn 已提交
1968 1969 1970
			/* see if update RFD index */
			if (rrd->num_buf > 1)
				atl1_update_rfd_index(adapter, rrd);
J
Jay Cliburn 已提交
1971

J
Jay Cliburn 已提交
1972 1973 1974 1975 1976 1977 1978
			/* update rrd */
			rrd->xsz.valid = 0;
			if (++rrd_next_to_clean == rrd_ring->count)
				rrd_next_to_clean = 0;
			count++;
			continue;
		} else {	/* current rrd still not be updated */
J
Jay Cliburn 已提交
1979

J
Jay Cliburn 已提交
1980 1981 1982 1983 1984
			break;
		}
rrd_ok:
		/* clean alloc flag for bad rrd */
		atl1_clean_alloc_flag(adapter, rrd, 0);
J
Jay Cliburn 已提交
1985

J
Jay Cliburn 已提交
1986 1987 1988
		buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
		if (++rfd_ring->next_to_clean == rfd_ring->count)
			rfd_ring->next_to_clean = 0;
J
Jay Cliburn 已提交
1989

J
Jay Cliburn 已提交
1990 1991 1992 1993
		/* update rrd next to clean */
		if (++rrd_next_to_clean == rrd_ring->count)
			rrd_next_to_clean = 0;
		count++;
J
Jay Cliburn 已提交
1994

J
Jay Cliburn 已提交
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
		if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
			if (!(rrd->err_flg &
				(ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
				| ERR_FLAG_LEN))) {
				/* packet error, don't need upstream */
				buffer_info->alloced = 0;
				rrd->xsz.valid = 0;
				continue;
			}
		}
J
Jay Cliburn 已提交
2005

J
Jay Cliburn 已提交
2006 2007 2008
		/* Good Receive */
		pci_unmap_page(adapter->pdev, buffer_info->dma,
			       buffer_info->length, PCI_DMA_FROMDEVICE);
2009
		buffer_info->dma = 0;
J
Jay Cliburn 已提交
2010 2011
		skb = buffer_info->skb;
		length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
J
Jay Cliburn 已提交
2012

2013
		skb_put(skb, length - ETH_FCS_LEN);
J
Jay Cliburn 已提交
2014

J
Jay Cliburn 已提交
2015 2016 2017
		/* Receive Checksum Offload */
		atl1_rx_checksum(adapter, rrd, skb);
		skb->protocol = eth_type_trans(skb, adapter->netdev);
J
Jay Cliburn 已提交
2018

J
Jay Cliburn 已提交
2019 2020 2021 2022 2023 2024 2025
		if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) {
			u16 vlan_tag = (rrd->vlan_tag >> 4) |
					((rrd->vlan_tag & 7) << 13) |
					((rrd->vlan_tag & 8) << 9);
			vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag);
		} else
			netif_rx(skb);
J
Jay Cliburn 已提交
2026

J
Jay Cliburn 已提交
2027 2028 2029 2030 2031
		/* let protocol layer free skb */
		buffer_info->skb = NULL;
		buffer_info->alloced = 0;
		rrd->xsz.valid = 0;
	}
J
Jay Cliburn 已提交
2032

J
Jay Cliburn 已提交
2033
	atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
J
Jay Cliburn 已提交
2034

J
Jay Cliburn 已提交
2035
	atl1_alloc_rx_buffers(adapter);
J
Jay Cliburn 已提交
2036

J
Jay Cliburn 已提交
2037 2038 2039 2040
	/* update mailbox ? */
	if (count) {
		u32 tpd_next_to_use;
		u32 rfd_next_to_use;
J
Jay Cliburn 已提交
2041

J
Jay Cliburn 已提交
2042
		spin_lock(&adapter->mb_lock);
J
Jay Cliburn 已提交
2043

J
Jay Cliburn 已提交
2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057
		tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
		rfd_next_to_use =
		    atomic_read(&adapter->rfd_ring.next_to_use);
		rrd_next_to_clean =
		    atomic_read(&adapter->rrd_ring.next_to_clean);
		value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
			MB_RFD_PROD_INDX_SHIFT) |
                        ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
			MB_RRD_CONS_INDX_SHIFT) |
                        ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
			MB_TPD_PROD_INDX_SHIFT);
		iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
		spin_unlock(&adapter->mb_lock);
	}
J
Jay Cliburn 已提交
2058 2059
}

J
Jay Cliburn 已提交
2060
static void atl1_intr_tx(struct atl1_adapter *adapter)
J
Jay Cliburn 已提交
2061
{
J
Jay Cliburn 已提交
2062 2063 2064 2065
	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
	struct atl1_buffer *buffer_info;
	u16 sw_tpd_next_to_clean;
	u16 cmb_tpd_next_to_clean;
J
Jay Cliburn 已提交
2066

J
Jay Cliburn 已提交
2067 2068
	sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
	cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
J
Jay Cliburn 已提交
2069

J
Jay Cliburn 已提交
2070 2071
	while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
		struct tx_packet_desc *tpd;
J
Jay Cliburn 已提交
2072

J
Jay Cliburn 已提交
2073 2074 2075 2076 2077 2078 2079
		tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean);
		buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
		if (buffer_info->dma) {
			pci_unmap_page(adapter->pdev, buffer_info->dma,
				       buffer_info->length, PCI_DMA_TODEVICE);
			buffer_info->dma = 0;
		}
J
Jay Cliburn 已提交
2080

J
Jay Cliburn 已提交
2081 2082 2083 2084
		if (buffer_info->skb) {
			dev_kfree_skb_irq(buffer_info->skb);
			buffer_info->skb = NULL;
		}
J
Jay Cliburn 已提交
2085

J
Jay Cliburn 已提交
2086 2087 2088 2089 2090 2091 2092 2093
		if (++sw_tpd_next_to_clean == tpd_ring->count)
			sw_tpd_next_to_clean = 0;
	}
	atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);

	if (netif_queue_stopped(adapter->netdev)
	    && netif_carrier_ok(adapter->netdev))
		netif_wake_queue(adapter->netdev);
J
Jay Cliburn 已提交
2094 2095
}

2096
static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring)
J
Jay Cliburn 已提交
2097 2098 2099
{
	u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
	u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
J
Jay Cliburn 已提交
2100 2101 2102
	return ((next_to_clean > next_to_use) ?
		next_to_clean - next_to_use - 1 :
		tpd_ring->count + next_to_clean - next_to_use - 1);
J
Jay Cliburn 已提交
2103 2104 2105
}

static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
J
Jay Cliburn 已提交
2106
	struct tx_packet_desc *ptpd)
J
Jay Cliburn 已提交
2107
{
J
Jay Cliburn 已提交
2108 2109
	u8 hdr_len, ip_off;
	u32 real_len;
J
Jay Cliburn 已提交
2110 2111 2112 2113 2114 2115
	int err;

	if (skb_shinfo(skb)->gso_size) {
		if (skb_header_cloned(skb)) {
			err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
			if (unlikely(err))
J
Jay Cliburn 已提交
2116
				return -1;
J
Jay Cliburn 已提交
2117 2118
		}

A
Al Viro 已提交
2119
		if (skb->protocol == htons(ETH_P_IP)) {
2120 2121
			struct iphdr *iph = ip_hdr(skb);

J
Jay Cliburn 已提交
2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142
			real_len = (((unsigned char *)iph - skb->data) +
				ntohs(iph->tot_len));
			if (real_len < skb->len)
				pskb_trim(skb, real_len);
			hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
			if (skb->len == hdr_len) {
				iph->check = 0;
				tcp_hdr(skb)->check =
					~csum_tcpudp_magic(iph->saddr,
					iph->daddr, tcp_hdrlen(skb),
					IPPROTO_TCP, 0);
				ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
					TPD_IPHL_SHIFT;
				ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
					TPD_TCPHDRLEN_MASK) <<
					TPD_TCPHDRLEN_SHIFT;
				ptpd->word3 |= 1 << TPD_IP_CSUM_SHIFT;
				ptpd->word3 |= 1 << TPD_TCP_CSUM_SHIFT;
				return 1;
			}

2143
			iph->check = 0;
2144
			tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
J
Jay Cliburn 已提交
2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160
					iph->daddr, 0, IPPROTO_TCP, 0);
			ip_off = (unsigned char *)iph -
				(unsigned char *) skb_network_header(skb);
			if (ip_off == 8) /* 802.3-SNAP frame */
				ptpd->word3 |= 1 << TPD_ETHTYPE_SHIFT;
			else if (ip_off != 0)
				return -2;

			ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
				TPD_IPHL_SHIFT;
			ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
				TPD_TCPHDRLEN_MASK) << TPD_TCPHDRLEN_SHIFT;
			ptpd->word3 |= (skb_shinfo(skb)->gso_size &
				TPD_MSS_MASK) << TPD_MSS_SHIFT;
			ptpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
			return 3;
J
Jay Cliburn 已提交
2161 2162 2163 2164 2165 2166
		}
	}
	return false;
}

static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
J
Jay Cliburn 已提交
2167
	struct tx_packet_desc *ptpd)
J
Jay Cliburn 已提交
2168 2169 2170 2171
{
	u8 css, cso;

	if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
J
Jay Cliburn 已提交
2172 2173 2174 2175 2176 2177 2178
		css = (u8) (skb->csum_start - skb_headroom(skb));
		cso = css + (u8) skb->csum_offset;
		if (unlikely(css & 0x1)) {
			/* L1 hardware requires an even number here */
			if (netif_msg_tx_err(adapter))
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"payload offset not an even number\n");
J
Jay Cliburn 已提交
2179 2180
			return -1;
		}
J
Jay Cliburn 已提交
2181 2182 2183 2184 2185
		ptpd->word3 |= (css & TPD_PLOADOFFSET_MASK) <<
			TPD_PLOADOFFSET_SHIFT;
		ptpd->word3 |= (cso & TPD_CCSUMOFFSET_MASK) <<
			TPD_CCSUMOFFSET_SHIFT;
		ptpd->word3 |= 1 << TPD_CUST_CSUM_EN_SHIFT;
J
Jay Cliburn 已提交
2186 2187
		return true;
	}
J
Jay Cliburn 已提交
2188
	return 0;
J
Jay Cliburn 已提交
2189 2190
}

J
Jay Cliburn 已提交
2191
static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
J
Jay Cliburn 已提交
2192
	struct tx_packet_desc *ptpd)
J
Jay Cliburn 已提交
2193 2194 2195
{
	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
	struct atl1_buffer *buffer_info;
J
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	u16 buf_len = skb->len;
J
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2197 2198 2199 2200
	struct page *page;
	unsigned long offset;
	unsigned int nr_frags;
	unsigned int f;
J
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2201 2202 2203 2204
	int retval;
	u16 next_to_use;
	u16 data_len;
	u8 hdr_len;
J
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2205

J
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2206
	buf_len -= skb->data_len;
J
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2207
	nr_frags = skb_shinfo(skb)->nr_frags;
J
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	next_to_use = atomic_read(&tpd_ring->next_to_use);
	buffer_info = &tpd_ring->buffer_info[next_to_use];
J
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2210 2211
	if (unlikely(buffer_info->skb))
		BUG();
J
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2212 2213
	/* put skb in last TPD */
	buffer_info->skb = NULL;
J
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2214

J
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2215 2216 2217 2218 2219
	retval = (ptpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
	if (retval) {
		/* TSO */
		hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
		buffer_info->length = hdr_len;
J
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2220 2221 2222
		page = virt_to_page(skb->data);
		offset = (unsigned long)skb->data & ~PAGE_MASK;
		buffer_info->dma = pci_map_page(adapter->pdev, page,
J
Jay Cliburn 已提交
2223
						offset, hdr_len,
J
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2224 2225
						PCI_DMA_TODEVICE);

J
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2226 2227
		if (++next_to_use == tpd_ring->count)
			next_to_use = 0;
J
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2228

J
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2229 2230
		if (buf_len > hdr_len) {
			int i, nseg;
2231

J
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2232 2233
			data_len = buf_len - hdr_len;
			nseg = (data_len + ATL1_MAX_TX_BUF_LEN - 1) /
J
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2234
				ATL1_MAX_TX_BUF_LEN;
J
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2235
			for (i = 0; i < nseg; i++) {
J
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2236
				buffer_info =
J
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2237
				    &tpd_ring->buffer_info[next_to_use];
J
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2238 2239
				buffer_info->skb = NULL;
				buffer_info->length =
J
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2240
				    (ATL1_MAX_TX_BUF_LEN >=
J
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2241 2242
				     data_len) ? ATL1_MAX_TX_BUF_LEN : data_len;
				data_len -= buffer_info->length;
J
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2243
				page = virt_to_page(skb->data +
J
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2244
					(hdr_len + i * ATL1_MAX_TX_BUF_LEN));
J
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2245
				offset = (unsigned long)(skb->data +
J
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2246 2247
					(hdr_len + i * ATL1_MAX_TX_BUF_LEN)) &
					~PAGE_MASK;
J
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2248 2249 2250
				buffer_info->dma = pci_map_page(adapter->pdev,
					page, offset, buffer_info->length,
					PCI_DMA_TODEVICE);
J
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				if (++next_to_use == tpd_ring->count)
					next_to_use = 0;
J
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2253 2254 2255
			}
		}
	} else {
J
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2256 2257
		/* not TSO */
		buffer_info->length = buf_len;
J
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		page = virt_to_page(skb->data);
		offset = (unsigned long)skb->data & ~PAGE_MASK;
		buffer_info->dma = pci_map_page(adapter->pdev, page,
J
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2261 2262 2263
			offset, buf_len, PCI_DMA_TODEVICE);
		if (++next_to_use == tpd_ring->count)
			next_to_use = 0;
J
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2264 2265 2266 2267
	}

	for (f = 0; f < nr_frags; f++) {
		struct skb_frag_struct *frag;
J
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2268
		u16 i, nseg;
J
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2269 2270

		frag = &skb_shinfo(skb)->frags[f];
J
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2271
		buf_len = frag->size;
J
Jay Cliburn 已提交
2272

J
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2273 2274 2275 2276
		nseg = (buf_len + ATL1_MAX_TX_BUF_LEN - 1) /
			ATL1_MAX_TX_BUF_LEN;
		for (i = 0; i < nseg; i++) {
			buffer_info = &tpd_ring->buffer_info[next_to_use];
J
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2277 2278 2279
			if (unlikely(buffer_info->skb))
				BUG();
			buffer_info->skb = NULL;
J
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2280 2281 2282
			buffer_info->length = (buf_len > ATL1_MAX_TX_BUF_LEN) ?
				ATL1_MAX_TX_BUF_LEN : buf_len;
			buf_len -= buffer_info->length;
J
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2283 2284 2285 2286
			buffer_info->dma = pci_map_page(adapter->pdev,
				frag->page,
				frag->page_offset + (i * ATL1_MAX_TX_BUF_LEN),
				buffer_info->length, PCI_DMA_TODEVICE);
J
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2287

J
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2288 2289
			if (++next_to_use == tpd_ring->count)
				next_to_use = 0;
J
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2290 2291 2292 2293 2294 2295 2296
		}
	}

	/* last tpd's buffer-info */
	buffer_info->skb = skb;
}

J
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static void atl1_tx_queue(struct atl1_adapter *adapter, u16 count,
       struct tx_packet_desc *ptpd)
J
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2299 2300 2301 2302
{
	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
	struct atl1_buffer *buffer_info;
	struct tx_packet_desc *tpd;
J
Jay Cliburn 已提交
2303 2304 2305
	u16 j;
	u32 val;
	u16 next_to_use = (u16) atomic_read(&tpd_ring->next_to_use);
J
Jay Cliburn 已提交
2306 2307

	for (j = 0; j < count; j++) {
J
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2308 2309 2310 2311
		buffer_info = &tpd_ring->buffer_info[next_to_use];
		tpd = ATL1_TPD_DESC(&adapter->tpd_ring, next_to_use);
		if (tpd != ptpd)
			memcpy(tpd, ptpd, sizeof(struct tx_packet_desc));
J
Jay Cliburn 已提交
2312
		tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
J
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2313 2314
		tpd->word2 &= ~(TPD_BUFLEN_MASK << TPD_BUFLEN_SHIFT);
		tpd->word2 |= (cpu_to_le16(buffer_info->length) &
J
Jay Cliburn 已提交
2315
			TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT;
J
Jay Cliburn 已提交
2316

J
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2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328
		/*
		 * if this is the first packet in a TSO chain, set
		 * TPD_HDRFLAG, otherwise, clear it.
		 */
		val = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) &
			TPD_SEGMENT_EN_MASK;
		if (val) {
			if (!j)
				tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
			else
				tpd->word3 &= ~(1 << TPD_HDRFLAG_SHIFT);
		}
J
Jay Cliburn 已提交
2329 2330

		if (j == (count - 1))
J
Jay Cliburn 已提交
2331
			tpd->word3 |= 1 << TPD_EOP_SHIFT;
J
Jay Cliburn 已提交
2332

J
Jay Cliburn 已提交
2333 2334
		if (++next_to_use == tpd_ring->count)
			next_to_use = 0;
J
Jay Cliburn 已提交
2335 2336 2337 2338 2339 2340 2341 2342 2343
	}
	/*
	 * 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();

J
Jay Cliburn 已提交
2344
	atomic_set(&tpd_ring->next_to_use, next_to_use);
J
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2345 2346 2347 2348 2349
}

static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
J
Jay Cliburn 已提交
2350
	struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
J
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2351 2352 2353 2354
	int len = skb->len;
	int tso;
	int count = 1;
	int ret_val;
J
Jay Cliburn 已提交
2355
	struct tx_packet_desc *ptpd;
J
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2356 2357 2358 2359 2360 2361 2362 2363 2364
	u16 frag_size;
	u16 vlan_tag;
	unsigned int nr_frags = 0;
	unsigned int mss = 0;
	unsigned int f;
	unsigned int proto_hdr_len;

	len -= skb->data_len;

J
Jay Cliburn 已提交
2365
	if (unlikely(skb->len <= 0)) {
J
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2366 2367 2368 2369 2370 2371 2372 2373
		dev_kfree_skb_any(skb);
		return NETDEV_TX_OK;
	}

	nr_frags = skb_shinfo(skb)->nr_frags;
	for (f = 0; f < nr_frags; f++) {
		frag_size = skb_shinfo(skb)->frags[f].size;
		if (frag_size)
J
Jay Cliburn 已提交
2374 2375
			count += (frag_size + ATL1_MAX_TX_BUF_LEN - 1) /
				ATL1_MAX_TX_BUF_LEN;
J
Jay Cliburn 已提交
2376 2377 2378 2379
	}

	mss = skb_shinfo(skb)->gso_size;
	if (mss) {
J
Jay Cliburn 已提交
2380
		if (skb->protocol == ntohs(ETH_P_IP)) {
2381
			proto_hdr_len = (skb_transport_offset(skb) +
2382
					 tcp_hdrlen(skb));
J
Jay Cliburn 已提交
2383 2384 2385 2386 2387 2388 2389
			if (unlikely(proto_hdr_len > len)) {
				dev_kfree_skb_any(skb);
				return NETDEV_TX_OK;
			}
			/* need additional TPD ? */
			if (proto_hdr_len != len)
				count += (len - proto_hdr_len +
J
Jay Cliburn 已提交
2390 2391
					ATL1_MAX_TX_BUF_LEN - 1) /
					ATL1_MAX_TX_BUF_LEN;
J
Jay Cliburn 已提交
2392 2393 2394
		}
	}

2395
	if (atl1_tpd_avail(&adapter->tpd_ring) < count) {
J
Jay Cliburn 已提交
2396 2397
		/* not enough descriptors */
		netif_stop_queue(netdev);
J
Jay Cliburn 已提交
2398 2399 2400
		if (netif_msg_tx_queued(adapter))
			dev_printk(KERN_DEBUG, &adapter->pdev->dev,
				"tx busy\n");
J
Jay Cliburn 已提交
2401 2402 2403
		return NETDEV_TX_BUSY;
	}

J
Jay Cliburn 已提交
2404 2405 2406
	ptpd = ATL1_TPD_DESC(tpd_ring,
		(u16) atomic_read(&tpd_ring->next_to_use));
	memset(ptpd, 0, sizeof(struct tx_packet_desc));
J
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2407 2408 2409 2410 2411

	if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
		vlan_tag = vlan_tx_tag_get(skb);
		vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
			((vlan_tag >> 9) & 0x8);
J
Jay Cliburn 已提交
2412
		ptpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
J
Jay Cliburn 已提交
2413 2414
		ptpd->word2 |= (vlan_tag & TPD_VLANTAG_MASK) <<
			TPD_VLANTAG_SHIFT;
J
Jay Cliburn 已提交
2415 2416
	}

J
Jay Cliburn 已提交
2417
	tso = atl1_tso(adapter, skb, ptpd);
J
Jay Cliburn 已提交
2418 2419 2420 2421 2422 2423
	if (tso < 0) {
		dev_kfree_skb_any(skb);
		return NETDEV_TX_OK;
	}

	if (!tso) {
J
Jay Cliburn 已提交
2424
		ret_val = atl1_tx_csum(adapter, skb, ptpd);
J
Jay Cliburn 已提交
2425 2426 2427 2428 2429 2430
		if (ret_val < 0) {
			dev_kfree_skb_any(skb);
			return NETDEV_TX_OK;
		}
	}

J
Jay Cliburn 已提交
2431 2432
	atl1_tx_map(adapter, skb, ptpd);
	atl1_tx_queue(adapter, count, ptpd);
J
Jay Cliburn 已提交
2433
	atl1_update_mailbox(adapter);
J
Jay Cliburn 已提交
2434
	mmiowb();
J
Jay Cliburn 已提交
2435
	netdev->trans_start = jiffies;
J
Jay Cliburn 已提交
2436 2437 2438 2439
	return NETDEV_TX_OK;
}

/*
J
Jay Cliburn 已提交
2440 2441 2442 2443
 * atl1_intr - Interrupt Handler
 * @irq: interrupt number
 * @data: pointer to a network interface device structure
 * @pt_regs: CPU registers structure
J
Jay Cliburn 已提交
2444
 */
J
Jay Cliburn 已提交
2445
static irqreturn_t atl1_intr(int irq, void *data)
J
Jay Cliburn 已提交
2446
{
J
Jay Cliburn 已提交
2447 2448 2449
	struct atl1_adapter *adapter = netdev_priv(data);
	u32 status;
	int max_ints = 10;
J
Jay Cliburn 已提交
2450

J
Jay Cliburn 已提交
2451 2452 2453
	status = adapter->cmb.cmb->int_stats;
	if (!status)
		return IRQ_NONE;
J
Jay Cliburn 已提交
2454

J
Jay Cliburn 已提交
2455 2456 2457 2458 2459
	do {
		/* clear CMB interrupt status at once */
		adapter->cmb.cmb->int_stats = 0;

		if (status & ISR_GPHY)	/* clear phy status */
J
Jay Cliburn 已提交
2460
			atlx_clear_phy_int(adapter);
J
Jay Cliburn 已提交
2461 2462 2463 2464 2465 2466 2467 2468 2469 2470

		/* clear ISR status, and Enable CMB DMA/Disable Interrupt */
		iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);

		/* check if SMB intr */
		if (status & ISR_SMB)
			atl1_inc_smb(adapter);

		/* check if PCIE PHY Link down */
		if (status & ISR_PHY_LINKDOWN) {
J
Jay Cliburn 已提交
2471 2472 2473
			if (netif_msg_intr(adapter))
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"pcie phy link down %x\n", status);
J
Jay Cliburn 已提交
2474 2475 2476 2477 2478
			if (netif_running(adapter->netdev)) {	/* reset MAC */
				iowrite32(0, adapter->hw.hw_addr + REG_IMR);
				schedule_work(&adapter->pcie_dma_to_rst_task);
				return IRQ_HANDLED;
			}
J
Jay Cliburn 已提交
2479
		}
J
Jay Cliburn 已提交
2480 2481 2482

		/* check if DMA read/write error ? */
		if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
J
Jay Cliburn 已提交
2483 2484 2485 2486
			if (netif_msg_intr(adapter))
				dev_printk(KERN_DEBUG, &adapter->pdev->dev,
					"pcie DMA r/w error (status = 0x%x)\n",
					status);
J
Jay Cliburn 已提交
2487 2488 2489
			iowrite32(0, adapter->hw.hw_addr + REG_IMR);
			schedule_work(&adapter->pcie_dma_to_rst_task);
			return IRQ_HANDLED;
J
Jay Cliburn 已提交
2490 2491
		}

J
Jay Cliburn 已提交
2492 2493 2494 2495 2496
		/* link event */
		if (status & ISR_GPHY) {
			adapter->soft_stats.tx_carrier_errors++;
			atl1_check_for_link(adapter);
		}
J
Jay Cliburn 已提交
2497

J
Jay Cliburn 已提交
2498 2499 2500
		/* transmit event */
		if (status & ISR_CMB_TX)
			atl1_intr_tx(adapter);
J
Jay Cliburn 已提交
2501

J
Jay Cliburn 已提交
2502 2503 2504 2505 2506 2507 2508
		/* rx exception */
		if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
			ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
			ISR_HOST_RRD_OV | ISR_CMB_RX))) {
			if (status & (ISR_RXF_OV | ISR_RFD_UNRUN |
				ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
				ISR_HOST_RRD_OV))
J
Jay Cliburn 已提交
2509 2510 2511 2512 2513
				if (netif_msg_intr(adapter))
					dev_printk(KERN_DEBUG,
						&adapter->pdev->dev,
						"rx exception, ISR = 0x%x\n",
						status);
J
Jay Cliburn 已提交
2514 2515
			atl1_intr_rx(adapter);
		}
J
Jay Cliburn 已提交
2516

J
Jay Cliburn 已提交
2517 2518 2519 2520 2521 2522 2523 2524
		if (--max_ints < 0)
			break;

	} while ((status = adapter->cmb.cmb->int_stats));

	/* re-enable Interrupt */
	iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
	return IRQ_HANDLED;
J
Jay Cliburn 已提交
2525 2526 2527
}


J
Jay Cliburn 已提交
2528 2529 2530 2531 2532 2533
/*
 * atl1_phy_config - Timer Call-back
 * @data: pointer to netdev cast into an unsigned long
 */
static void atl1_phy_config(unsigned long data)
{
J
Jay Cliburn 已提交
2534 2535
	struct atl1_adapter *adapter = (struct atl1_adapter *)data;
	struct atl1_hw *hw = &adapter->hw;
J
Jay Cliburn 已提交
2536
	unsigned long flags;
J
Jay Cliburn 已提交
2537

J
Jay Cliburn 已提交
2538
	spin_lock_irqsave(&adapter->lock, flags);
J
Jay Cliburn 已提交
2539 2540 2541 2542
	adapter->phy_timer_pending = false;
	atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
	atl1_write_phy_reg(hw, MII_ATLX_CR, hw->mii_1000t_ctrl_reg);
	atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
J
Jay Cliburn 已提交
2543 2544 2545
	spin_unlock_irqrestore(&adapter->lock, flags);
}

J
Jay Cliburn 已提交
2546 2547 2548 2549 2550 2551 2552 2553 2554 2555
/*
 * Orphaned vendor comment left intact here:
 * <vendor comment>
 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
 * will assert. We do soft reset <0x1400=1> according
 * with the SPEC. BUT, it seemes that PCIE or DMA
 * state-machine will not be reset. DMAR_TO_INT will
 * assert again and again.
 * </vendor comment>
 */
J
Jay Cliburn 已提交
2556

J
Jay Cliburn 已提交
2557
static int atl1_reset(struct atl1_adapter *adapter)
J
Jay Cliburn 已提交
2558 2559 2560
{
	int ret;
	ret = atl1_reset_hw(&adapter->hw);
J
Jay Cliburn 已提交
2561
	if (ret)
J
Jay Cliburn 已提交
2562 2563
		return ret;
	return atl1_init_hw(&adapter->hw);
J
Jay Cliburn 已提交
2564 2565
}

J
Jay Cliburn 已提交
2566
static s32 atl1_up(struct atl1_adapter *adapter)
J
Jay Cliburn 已提交
2567 2568 2569 2570 2571 2572
{
	struct net_device *netdev = adapter->netdev;
	int err;
	int irq_flags = IRQF_SAMPLE_RANDOM;

	/* hardware has been reset, we need to reload some things */
J
Jay Cliburn 已提交
2573
	atlx_set_multi(netdev);
2574
	atl1_init_ring_ptrs(adapter);
J
Jay Cliburn 已提交
2575
	atlx_restore_vlan(adapter);
J
Jay Cliburn 已提交
2576
	err = atl1_alloc_rx_buffers(adapter);
J
Jay Cliburn 已提交
2577 2578
	if (unlikely(!err))
		/* no RX BUFFER allocated */
J
Jay Cliburn 已提交
2579 2580 2581 2582 2583 2584 2585 2586 2587
		return -ENOMEM;

	if (unlikely(atl1_configure(adapter))) {
		err = -EIO;
		goto err_up;
	}

	err = pci_enable_msi(adapter->pdev);
	if (err) {
J
Jay Cliburn 已提交
2588 2589 2590
		if (netif_msg_ifup(adapter))
			dev_info(&adapter->pdev->dev,
				"Unable to enable MSI: %d\n", err);
J
Jay Cliburn 已提交
2591 2592 2593 2594 2595 2596 2597 2598
		irq_flags |= IRQF_SHARED;
	}

	err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags,
			netdev->name, netdev);
	if (unlikely(err))
		goto err_up;

J
Jay Cliburn 已提交
2599
	atlx_irq_enable(adapter);
J
Jay Cliburn 已提交
2600
	atl1_check_link(adapter);
2601
	netif_start_queue(netdev);
J
Jay Cliburn 已提交
2602 2603 2604 2605 2606 2607 2608 2609 2610
	return 0;

err_up:
	pci_disable_msi(adapter->pdev);
	/* free rx_buffers */
	atl1_clean_rx_ring(adapter);
	return err;
}

J
Jay Cliburn 已提交
2611
static void atl1_down(struct atl1_adapter *adapter)
J
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2612 2613 2614
{
	struct net_device *netdev = adapter->netdev;

J
Jay Cliburn 已提交
2615
	netif_stop_queue(netdev);
J
Jay Cliburn 已提交
2616 2617 2618
	del_timer_sync(&adapter->phy_config_timer);
	adapter->phy_timer_pending = false;

J
Jay Cliburn 已提交
2619
	atlx_irq_disable(adapter);
J
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2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632
	free_irq(adapter->pdev->irq, netdev);
	pci_disable_msi(adapter->pdev);
	atl1_reset_hw(&adapter->hw);
	adapter->cmb.cmb->int_stats = 0;

	adapter->link_speed = SPEED_0;
	adapter->link_duplex = -1;
	netif_carrier_off(netdev);

	atl1_clean_tx_ring(adapter);
	atl1_clean_rx_ring(adapter);
}

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2633 2634 2635 2636 2637 2638 2639 2640
static void atl1_tx_timeout_task(struct work_struct *work)
{
	struct atl1_adapter *adapter =
		container_of(work, struct atl1_adapter, tx_timeout_task);
	struct net_device *netdev = adapter->netdev;

	netif_device_detach(netdev);
	atl1_down(adapter);
2641
	atl1_up(adapter);
J
Jay Cliburn 已提交
2642
	netif_device_attach(netdev);
2643 2644
}

J
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2645 2646 2647 2648 2649 2650 2651 2652
/*
 * atl1_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 atl1_change_mtu(struct net_device *netdev, int new_mtu)
2653 2654
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
J
Jay Cliburn 已提交
2655 2656
	int old_mtu = netdev->mtu;
	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2657

J
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2658 2659 2660 2661 2662
	if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
	    (max_frame > MAX_JUMBO_FRAME_SIZE)) {
		if (netif_msg_link(adapter))
			dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
		return -EINVAL;
2663
	}
J
Jay Cliburn 已提交
2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676

	adapter->hw.max_frame_size = max_frame;
	adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
	adapter->rx_buffer_len = (max_frame + 7) & ~7;
	adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;

	netdev->mtu = new_mtu;
	if ((old_mtu != new_mtu) && netif_running(netdev)) {
		atl1_down(adapter);
		atl1_up(adapter);
	}

	return 0;
2677 2678
}

J
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2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695
/*
 * atl1_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 atl1_open(struct net_device *netdev)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	int err;

J
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2696 2697
	netif_carrier_off(netdev);

J
Jay Cliburn 已提交
2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732
	/* allocate transmit descriptors */
	err = atl1_setup_ring_resources(adapter);
	if (err)
		return err;

	err = atl1_up(adapter);
	if (err)
		goto err_up;

	return 0;

err_up:
	atl1_reset(adapter);
	return err;
}

/*
 * atl1_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 atl1_close(struct net_device *netdev)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	atl1_down(adapter);
	atl1_free_ring_resources(adapter);
	return 0;
}

J
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2733 2734
#ifdef CONFIG_PM
static int atl1_suspend(struct pci_dev *pdev, pm_message_t state)
J
Jay Cliburn 已提交
2735
{
J
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2736 2737 2738 2739 2740
	struct net_device *netdev = pci_get_drvdata(pdev);
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_hw *hw = &adapter->hw;
	u32 ctrl = 0;
	u32 wufc = adapter->wol;
2741 2742 2743 2744
	u32 val;
	int retval;
	u16 speed;
	u16 duplex;
J
Jay Cliburn 已提交
2745 2746

	netif_device_detach(netdev);
J
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2747 2748
	if (netif_running(netdev))
		atl1_down(adapter);
J
Jay Cliburn 已提交
2749

2750 2751 2752 2753
	retval = pci_save_state(pdev);
	if (retval)
		return retval;

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2754 2755
	atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
	atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2756 2757
	val = ctrl & BMSR_LSTATUS;
	if (val)
J
Jay Cliburn 已提交
2758
		wufc &= ~ATLX_WUFC_LNKC;
J
Jay Cliburn 已提交
2759

2760 2761 2762 2763 2764 2765 2766 2767
	if (val && wufc) {
		val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
		if (val) {
			if (netif_msg_ifdown(adapter))
				dev_printk(KERN_DEBUG, &pdev->dev,
					"error getting speed/duplex\n");
			goto disable_wol;
		}
J
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2768 2769 2770

		ctrl = 0;

2771 2772 2773
		/* enable magic packet WOL */
		if (wufc & ATLX_WUFC_MAG)
			ctrl |= (WOL_MAGIC_EN | WOL_MAGIC_PME_EN);
J
Jay Cliburn 已提交
2774
		iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787
		ioread32(hw->hw_addr + REG_WOL_CTRL);

		/* configure the mac */
		ctrl = MAC_CTRL_RX_EN;
		ctrl |= ((u32)((speed == SPEED_1000) ? MAC_CTRL_SPEED_1000 :
			MAC_CTRL_SPEED_10_100) << MAC_CTRL_SPEED_SHIFT);
		if (duplex == FULL_DUPLEX)
			ctrl |= MAC_CTRL_DUPLX;
		ctrl |= (((u32)adapter->hw.preamble_len &
			MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
		if (adapter->vlgrp)
			ctrl |= MAC_CTRL_RMV_VLAN;
		if (wufc & ATLX_WUFC_MAG)
J
Jay Cliburn 已提交
2788 2789
			ctrl |= MAC_CTRL_BC_EN;
		iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL);
2790 2791 2792 2793 2794 2795 2796 2797 2798 2799
		ioread32(hw->hw_addr + REG_MAC_CTRL);

		/* poke the PHY */
		ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
		ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
		iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
		ioread32(hw->hw_addr + REG_PCIE_PHYMISC);

		pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
		goto exit;
J
Jay Cliburn 已提交
2800 2801
	}

2802 2803 2804 2805 2806 2807 2808 2809 2810 2811
	if (!val && wufc) {
		ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
		iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
		ioread32(hw->hw_addr + REG_WOL_CTRL);
		iowrite32(0, hw->hw_addr + REG_MAC_CTRL);
		ioread32(hw->hw_addr + REG_MAC_CTRL);
		hw->phy_configured = false;
		pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
		goto exit;
	}
J
Jay Cliburn 已提交
2812

2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826
disable_wol:
	iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
	ioread32(hw->hw_addr + REG_WOL_CTRL);
	ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
	ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
	iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
	ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
	hw->phy_configured = false;
	pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
exit:
	if (netif_running(netdev))
		pci_disable_msi(adapter->pdev);
	pci_disable_device(pdev);
	pci_set_power_state(pdev, pci_choose_state(pdev, state));
J
Jay Cliburn 已提交
2827 2828

	return 0;
J
Jay Cliburn 已提交
2829 2830
}

J
Jay Cliburn 已提交
2831
static int atl1_resume(struct pci_dev *pdev)
J
Jay Cliburn 已提交
2832
{
J
Jay Cliburn 已提交
2833 2834
	struct net_device *netdev = pci_get_drvdata(pdev);
	struct atl1_adapter *adapter = netdev_priv(netdev);
J
Jay Cliburn 已提交
2835
	u32 err;
J
Jay Cliburn 已提交
2836

J
Jay Cliburn 已提交
2837
	pci_set_power_state(pdev, PCI_D0);
J
Jay Cliburn 已提交
2838 2839
	pci_restore_state(pdev);

J
Jay Cliburn 已提交
2840
	err = pci_enable_device(pdev);
2841 2842 2843 2844 2845 2846 2847 2848 2849
	if (err) {
		if (netif_msg_ifup(adapter))
			dev_printk(KERN_DEBUG, &pdev->dev,
				"error enabling pci device\n");
		return err;
	}

	pci_set_master(pdev);
	iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
J
Jay Cliburn 已提交
2850 2851 2852
	pci_enable_wake(pdev, PCI_D3hot, 0);
	pci_enable_wake(pdev, PCI_D3cold, 0);

2853 2854
	atl1_reset_hw(&adapter->hw);
	adapter->cmb.cmb->int_stats = 0;
J
Jay Cliburn 已提交
2855 2856 2857 2858 2859 2860

	if (netif_running(netdev))
		atl1_up(adapter);
	netif_device_attach(netdev);

	return 0;
J
Jay Cliburn 已提交
2861
}
J
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2862 2863 2864 2865
#else
#define atl1_suspend NULL
#define atl1_resume NULL
#endif
J
Jay Cliburn 已提交
2866

J
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2867 2868 2869 2870 2871 2872 2873
static void atl1_shutdown(struct pci_dev *pdev)
{
#ifdef CONFIG_PM
	atl1_suspend(pdev, PMSG_SUSPEND);
#endif
}

J
Jay Cliburn 已提交
2874 2875
#ifdef CONFIG_NET_POLL_CONTROLLER
static void atl1_poll_controller(struct net_device *netdev)
J
Jay Cliburn 已提交
2876
{
J
Jay Cliburn 已提交
2877 2878 2879
	disable_irq(netdev->irq);
	atl1_intr(netdev->irq, netdev);
	enable_irq(netdev->irq);
J
Jay Cliburn 已提交
2880
}
J
Jay Cliburn 已提交
2881
#endif
J
Jay Cliburn 已提交
2882

2883 2884 2885
static const struct net_device_ops atl1_netdev_ops = {
	.ndo_open		= atl1_open,
	.ndo_stop		= atl1_close,
2886
	.ndo_start_xmit		= atl1_xmit_frame,
2887 2888 2889 2890 2891
	.ndo_set_multicast_list	= atlx_set_multi,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_set_mac_address	= atl1_set_mac,
	.ndo_change_mtu		= atl1_change_mtu,
	.ndo_do_ioctl		= atlx_ioctl,
2892
	.ndo_tx_timeout		= atlx_tx_timeout,
2893 2894 2895 2896 2897 2898
	.ndo_vlan_rx_register	= atlx_vlan_rx_register,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller	= atl1_poll_controller,
#endif
};

J
Jay Cliburn 已提交
2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910
/*
 * atl1_probe - Device Initialization Routine
 * @pdev: PCI device information struct
 * @ent: entry in atl1_pci_tbl
 *
 * Returns 0 on success, negative on failure
 *
 * atl1_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 atl1_probe(struct pci_dev *pdev,
J
Jay Cliburn 已提交
2911
	const struct pci_device_id *ent)
J
Jay Cliburn 已提交
2912 2913 2914 2915 2916 2917 2918 2919 2920 2921
{
	struct net_device *netdev;
	struct atl1_adapter *adapter;
	static int cards_found = 0;
	int err;

	err = pci_enable_device(pdev);
	if (err)
		return err;

2922
	/*
C
Chris Snook 已提交
2923 2924 2925 2926 2927 2928 2929 2930
	 * The atl1 chip can DMA to 64-bit addresses, but it uses a single
	 * shared register for the high 32 bits, so only a single, aligned,
	 * 4 GB physical address range can be used at a time.
	 *
	 * Supporting 64-bit DMA on this hardware is more trouble than it's
	 * worth.  It is far easier to limit to 32-bit DMA than update
	 * various kernel subsystems to support the mechanics required by a
	 * fixed-high-32-bit system.
2931 2932
	 */
	err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
J
Jay Cliburn 已提交
2933
	if (err) {
2934 2935
		dev_err(&pdev->dev, "no usable DMA configuration\n");
		goto err_dma;
J
Jay Cliburn 已提交
2936
	}
J
Jay Cliburn 已提交
2937 2938
	/*
	 * Mark all PCI regions associated with PCI device
J
Jay Cliburn 已提交
2939 2940
	 * pdev as being reserved by owner atl1_driver_name
	 */
J
Jay Cliburn 已提交
2941
	err = pci_request_regions(pdev, ATLX_DRIVER_NAME);
J
Jay Cliburn 已提交
2942 2943 2944
	if (err)
		goto err_request_regions;

J
Jay Cliburn 已提交
2945 2946
	/*
	 * Enables bus-mastering on the device and calls
J
Jay Cliburn 已提交
2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962
	 * pcibios_set_master to do the needed arch specific settings
	 */
	pci_set_master(pdev);

	netdev = alloc_etherdev(sizeof(struct atl1_adapter));
	if (!netdev) {
		err = -ENOMEM;
		goto err_alloc_etherdev;
	}
	SET_NETDEV_DEV(netdev, &pdev->dev);

	pci_set_drvdata(pdev, netdev);
	adapter = netdev_priv(netdev);
	adapter->netdev = netdev;
	adapter->pdev = pdev;
	adapter->hw.back = adapter;
J
Jay Cliburn 已提交
2963
	adapter->msg_enable = netif_msg_init(debug, atl1_default_msg);
J
Jay Cliburn 已提交
2964 2965 2966 2967 2968 2969 2970

	adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
	if (!adapter->hw.hw_addr) {
		err = -EIO;
		goto err_pci_iomap;
	}
	/* get device revision number */
J
Jay Cliburn 已提交
2971
	adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr +
J
Jay Cliburn 已提交
2972
		(REG_MASTER_CTRL + 2));
J
Jay Cliburn 已提交
2973 2974
	if (netif_msg_probe(adapter))
		dev_info(&pdev->dev, "version %s\n", ATLX_DRIVER_VERSION);
J
Jay Cliburn 已提交
2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985

	/* set default ring resource counts */
	adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
	adapter->tpd_ring.count = ATL1_DEFAULT_TPD;

	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 = 0x1f;

2986
	netdev->netdev_ops = &atl1_netdev_ops;
J
Jay Cliburn 已提交
2987
	netdev->watchdog_timeo = 5 * HZ;
2988

J
Jay Cliburn 已提交
2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008
	netdev->ethtool_ops = &atl1_ethtool_ops;
	adapter->bd_number = cards_found;

	/* setup the private structure */
	err = atl1_sw_init(adapter);
	if (err)
		goto err_common;

	netdev->features = NETIF_F_HW_CSUM;
	netdev->features |= NETIF_F_SG;
	netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);

	/*
	 * patch for some L1 of old version,
	 * the final version of L1 may not need these
	 * patches
	 */
	/* atl1_pcie_patch(adapter); */

	/* really reset GPHY core */
J
Jay Cliburn 已提交
3009
	iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
J
Jay Cliburn 已提交
3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042

	/*
	 * reset the controller to
	 * put the device in a known good starting state
	 */
	if (atl1_reset_hw(&adapter->hw)) {
		err = -EIO;
		goto err_common;
	}

	/* copy the MAC address out of the EEPROM */
	atl1_read_mac_addr(&adapter->hw);
	memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);

	if (!is_valid_ether_addr(netdev->dev_addr)) {
		err = -EIO;
		goto err_common;
	}

	atl1_check_options(adapter);

	/* pre-init the MAC, and setup link */
	err = atl1_init_hw(&adapter->hw);
	if (err) {
		err = -EIO;
		goto err_common;
	}

	atl1_pcie_patch(adapter);
	/* assume we have no link for now */
	netif_carrier_off(netdev);
	netif_stop_queue(netdev);

S
Stephen Hemminger 已提交
3043 3044
	setup_timer(&adapter->phy_config_timer, &atl1_phy_config,
		    (unsigned long)adapter);
J
Jay Cliburn 已提交
3045 3046 3047 3048
	adapter->phy_timer_pending = false;

	INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task);

J
Jay Cliburn 已提交
3049
	INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task);
J
Jay Cliburn 已提交
3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090

	INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task);

	err = register_netdev(netdev);
	if (err)
		goto err_common;

	cards_found++;
	atl1_via_workaround(adapter);
	return 0;

err_common:
	pci_iounmap(pdev, adapter->hw.hw_addr);
err_pci_iomap:
	free_netdev(netdev);
err_alloc_etherdev:
	pci_release_regions(pdev);
err_dma:
err_request_regions:
	pci_disable_device(pdev);
	return err;
}

/*
 * atl1_remove - Device Removal Routine
 * @pdev: PCI device information struct
 *
 * atl1_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 atl1_remove(struct pci_dev *pdev)
{
	struct net_device *netdev = pci_get_drvdata(pdev);
	struct atl1_adapter *adapter;
	/* Device not available. Return. */
	if (!netdev)
		return;

	adapter = netdev_priv(netdev);
C
Chris Snook 已提交
3091

J
Jay Cliburn 已提交
3092 3093
	/*
	 * Some atl1 boards lack persistent storage for their MAC, and get it
C
Chris Snook 已提交
3094 3095 3096 3097
	 * from the BIOS during POST.  If we've been messing with the MAC
	 * address, we need to save the permanent one.
	 */
	if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
J
Jay Cliburn 已提交
3098 3099
		memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr,
			ETH_ALEN);
C
Chris Snook 已提交
3100 3101 3102
		atl1_set_mac_addr(&adapter->hw);
	}

J
Jay Cliburn 已提交
3103
	iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
J
Jay Cliburn 已提交
3104 3105 3106 3107 3108 3109 3110 3111
	unregister_netdev(netdev);
	pci_iounmap(pdev, adapter->hw.hw_addr);
	pci_release_regions(pdev);
	free_netdev(netdev);
	pci_disable_device(pdev);
}

static struct pci_driver atl1_driver = {
J
Jay Cliburn 已提交
3112
	.name = ATLX_DRIVER_NAME,
J
Jay Cliburn 已提交
3113 3114 3115 3116
	.id_table = atl1_pci_tbl,
	.probe = atl1_probe,
	.remove = __devexit_p(atl1_remove),
	.suspend = atl1_suspend,
J
Jay Cliburn 已提交
3117 3118
	.resume = atl1_resume,
	.shutdown = atl1_shutdown
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Jay Cliburn 已提交
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};

/*
 * atl1_exit_module - Driver Exit Cleanup Routine
 *
 * atl1_exit_module is called just before the driver is removed
 * from memory.
 */
static void __exit atl1_exit_module(void)
{
	pci_unregister_driver(&atl1_driver);
}

/*
 * atl1_init_module - Driver Registration Routine
 *
 * atl1_init_module is the first routine called when the driver is
 * loaded. All it does is register with the PCI subsystem.
 */
static int __init atl1_init_module(void)
{
	return pci_register_driver(&atl1_driver);
}

module_init(atl1_init_module);
module_exit(atl1_exit_module);
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3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188

struct atl1_stats {
	char stat_string[ETH_GSTRING_LEN];
	int sizeof_stat;
	int stat_offset;
};

#define ATL1_STAT(m) \
	sizeof(((struct atl1_adapter *)0)->m), offsetof(struct atl1_adapter, m)

static struct atl1_stats atl1_gstrings_stats[] = {
	{"rx_packets", ATL1_STAT(soft_stats.rx_packets)},
	{"tx_packets", ATL1_STAT(soft_stats.tx_packets)},
	{"rx_bytes", ATL1_STAT(soft_stats.rx_bytes)},
	{"tx_bytes", ATL1_STAT(soft_stats.tx_bytes)},
	{"rx_errors", ATL1_STAT(soft_stats.rx_errors)},
	{"tx_errors", ATL1_STAT(soft_stats.tx_errors)},
	{"multicast", ATL1_STAT(soft_stats.multicast)},
	{"collisions", ATL1_STAT(soft_stats.collisions)},
	{"rx_length_errors", ATL1_STAT(soft_stats.rx_length_errors)},
	{"rx_over_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
	{"rx_crc_errors", ATL1_STAT(soft_stats.rx_crc_errors)},
	{"rx_frame_errors", ATL1_STAT(soft_stats.rx_frame_errors)},
	{"rx_fifo_errors", ATL1_STAT(soft_stats.rx_fifo_errors)},
	{"rx_missed_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
	{"tx_aborted_errors", ATL1_STAT(soft_stats.tx_aborted_errors)},
	{"tx_carrier_errors", ATL1_STAT(soft_stats.tx_carrier_errors)},
	{"tx_fifo_errors", ATL1_STAT(soft_stats.tx_fifo_errors)},
	{"tx_window_errors", ATL1_STAT(soft_stats.tx_window_errors)},
	{"tx_abort_exce_coll", ATL1_STAT(soft_stats.excecol)},
	{"tx_abort_late_coll", ATL1_STAT(soft_stats.latecol)},
	{"tx_deferred_ok", ATL1_STAT(soft_stats.deffer)},
	{"tx_single_coll_ok", ATL1_STAT(soft_stats.scc)},
	{"tx_multi_coll_ok", ATL1_STAT(soft_stats.mcc)},
	{"tx_underun", ATL1_STAT(soft_stats.tx_underun)},
	{"tx_trunc", ATL1_STAT(soft_stats.tx_trunc)},
	{"tx_pause", ATL1_STAT(soft_stats.tx_pause)},
	{"rx_pause", ATL1_STAT(soft_stats.rx_pause)},
	{"rx_rrd_ov", ATL1_STAT(soft_stats.rx_rrd_ov)},
	{"rx_trunc", ATL1_STAT(soft_stats.rx_trunc)}
};

static void atl1_get_ethtool_stats(struct net_device *netdev,
	struct ethtool_stats *stats, u64 *data)
3189
{
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Jay Cliburn 已提交
3190
	struct atl1_adapter *adapter = netdev_priv(netdev);
3191
	int i;
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3192
	char *p;
3193

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3194 3195 3196 3197
	for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
		p = (char *)adapter+atl1_gstrings_stats[i].stat_offset;
		data[i] = (atl1_gstrings_stats[i].sizeof_stat ==
			sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
3198 3199 3200 3201
	}

}

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3202
static int atl1_get_sset_count(struct net_device *netdev, int sset)
3203
{
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3204 3205 3206 3207 3208 3209
	switch (sset) {
	case ETH_SS_STATS:
		return ARRAY_SIZE(atl1_gstrings_stats);
	default:
		return -EOPNOTSUPP;
	}
3210 3211
}

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3212 3213
static int atl1_get_settings(struct net_device *netdev,
	struct ethtool_cmd *ecmd)
3214
{
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3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_hw *hw = &adapter->hw;

	ecmd->supported = (SUPPORTED_10baseT_Half |
			   SUPPORTED_10baseT_Full |
			   SUPPORTED_100baseT_Half |
			   SUPPORTED_100baseT_Full |
			   SUPPORTED_1000baseT_Full |
			   SUPPORTED_Autoneg | SUPPORTED_TP);
	ecmd->advertising = ADVERTISED_TP;
	if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
	    hw->media_type == MEDIA_TYPE_1000M_FULL) {
		ecmd->advertising |= ADVERTISED_Autoneg;
		if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR) {
			ecmd->advertising |= ADVERTISED_Autoneg;
			ecmd->advertising |=
			    (ADVERTISED_10baseT_Half |
			     ADVERTISED_10baseT_Full |
			     ADVERTISED_100baseT_Half |
			     ADVERTISED_100baseT_Full |
			     ADVERTISED_1000baseT_Full);
		} else
			ecmd->advertising |= (ADVERTISED_1000baseT_Full);
	}
	ecmd->port = PORT_TP;
	ecmd->phy_address = 0;
	ecmd->transceiver = XCVR_INTERNAL;

	if (netif_carrier_ok(adapter->netdev)) {
		u16 link_speed, link_duplex;
		atl1_get_speed_and_duplex(hw, &link_speed, &link_duplex);
		ecmd->speed = link_speed;
		if (link_duplex == FULL_DUPLEX)
			ecmd->duplex = DUPLEX_FULL;
		else
			ecmd->duplex = DUPLEX_HALF;
	} else {
		ecmd->speed = -1;
		ecmd->duplex = -1;
	}
	if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
	    hw->media_type == MEDIA_TYPE_1000M_FULL)
		ecmd->autoneg = AUTONEG_ENABLE;
	else
		ecmd->autoneg = AUTONEG_DISABLE;
3260 3261 3262 3263

	return 0;
}

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3264 3265
static int atl1_set_settings(struct net_device *netdev,
	struct ethtool_cmd *ecmd)
3266
{
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3267 3268
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_hw *hw = &adapter->hw;
3269
	u16 phy_data;
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3270 3271
	int ret_val = 0;
	u16 old_media_type = hw->media_type;
3272

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3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329
	if (netif_running(adapter->netdev)) {
		if (netif_msg_link(adapter))
			dev_dbg(&adapter->pdev->dev,
				"ethtool shutting down adapter\n");
		atl1_down(adapter);
	}

	if (ecmd->autoneg == AUTONEG_ENABLE)
		hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
	else {
		if (ecmd->speed == SPEED_1000) {
			if (ecmd->duplex != DUPLEX_FULL) {
				if (netif_msg_link(adapter))
					dev_warn(&adapter->pdev->dev,
						"1000M half is invalid\n");
				ret_val = -EINVAL;
				goto exit_sset;
			}
			hw->media_type = MEDIA_TYPE_1000M_FULL;
		} else if (ecmd->speed == SPEED_100) {
			if (ecmd->duplex == DUPLEX_FULL)
				hw->media_type = MEDIA_TYPE_100M_FULL;
			else
				hw->media_type = MEDIA_TYPE_100M_HALF;
		} else {
			if (ecmd->duplex == DUPLEX_FULL)
				hw->media_type = MEDIA_TYPE_10M_FULL;
			else
				hw->media_type = MEDIA_TYPE_10M_HALF;
		}
	}
	switch (hw->media_type) {
	case MEDIA_TYPE_AUTO_SENSOR:
		ecmd->advertising =
		    ADVERTISED_10baseT_Half |
		    ADVERTISED_10baseT_Full |
		    ADVERTISED_100baseT_Half |
		    ADVERTISED_100baseT_Full |
		    ADVERTISED_1000baseT_Full |
		    ADVERTISED_Autoneg | ADVERTISED_TP;
		break;
	case MEDIA_TYPE_1000M_FULL:
		ecmd->advertising =
		    ADVERTISED_1000baseT_Full |
		    ADVERTISED_Autoneg | ADVERTISED_TP;
		break;
	default:
		ecmd->advertising = 0;
		break;
	}
	if (atl1_phy_setup_autoneg_adv(hw)) {
		ret_val = -EINVAL;
		if (netif_msg_link(adapter))
			dev_warn(&adapter->pdev->dev,
				"invalid ethtool speed/duplex setting\n");
		goto exit_sset;
	}
3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352
	if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
	    hw->media_type == MEDIA_TYPE_1000M_FULL)
		phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
	else {
		switch (hw->media_type) {
		case MEDIA_TYPE_100M_FULL:
			phy_data =
			    MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
			    MII_CR_RESET;
			break;
		case MEDIA_TYPE_100M_HALF:
			phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
			break;
		case MEDIA_TYPE_10M_FULL:
			phy_data =
			    MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
			break;
		default:
			/* MEDIA_TYPE_10M_HALF: */
			phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
			break;
		}
	}
J
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3353 3354 3355 3356
	atl1_write_phy_reg(hw, MII_BMCR, phy_data);
exit_sset:
	if (ret_val)
		hw->media_type = old_media_type;
3357

J
Jay Cliburn 已提交
3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370
	if (netif_running(adapter->netdev)) {
		if (netif_msg_link(adapter))
			dev_dbg(&adapter->pdev->dev,
				"ethtool starting adapter\n");
		atl1_up(adapter);
	} else if (!ret_val) {
		if (netif_msg_link(adapter))
			dev_dbg(&adapter->pdev->dev,
				"ethtool resetting adapter\n");
		atl1_reset(adapter);
	}
	return ret_val;
}
3371

J
Jay Cliburn 已提交
3372 3373 3374 3375
static void atl1_get_drvinfo(struct net_device *netdev,
	struct ethtool_drvinfo *drvinfo)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
3376

J
Jay Cliburn 已提交
3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390
	strncpy(drvinfo->driver, ATLX_DRIVER_NAME, sizeof(drvinfo->driver));
	strncpy(drvinfo->version, ATLX_DRIVER_VERSION,
		sizeof(drvinfo->version));
	strncpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
	strncpy(drvinfo->bus_info, pci_name(adapter->pdev),
		sizeof(drvinfo->bus_info));
	drvinfo->eedump_len = ATL1_EEDUMP_LEN;
}

static void atl1_get_wol(struct net_device *netdev,
	struct ethtool_wolinfo *wol)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);

3391
	wol->supported = WAKE_MAGIC;
J
Jay Cliburn 已提交
3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402
	wol->wolopts = 0;
	if (adapter->wol & ATLX_WUFC_MAG)
		wol->wolopts |= WAKE_MAGIC;
	return;
}

static int atl1_set_wol(struct net_device *netdev,
	struct ethtool_wolinfo *wol)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);

3403 3404
	if (wol->wolopts & (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
		WAKE_ARP | WAKE_MAGICSECURE))
J
Jay Cliburn 已提交
3405 3406 3407 3408
		return -EOPNOTSUPP;
	adapter->wol = 0;
	if (wol->wolopts & WAKE_MAGIC)
		adapter->wol |= ATLX_WUFC_MAG;
3409 3410 3411
	return 0;
}

J
Jay Cliburn 已提交
3412
static u32 atl1_get_msglevel(struct net_device *netdev)
3413
{
J
Jay Cliburn 已提交
3414 3415 3416
	struct atl1_adapter *adapter = netdev_priv(netdev);
	return adapter->msg_enable;
}
3417

J
Jay Cliburn 已提交
3418 3419 3420 3421 3422
static void atl1_set_msglevel(struct net_device *netdev, u32 value)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	adapter->msg_enable = value;
}
3423

J
Jay Cliburn 已提交
3424 3425 3426 3427
static int atl1_get_regs_len(struct net_device *netdev)
{
	return ATL1_REG_COUNT * sizeof(u32);
}
3428

J
Jay Cliburn 已提交
3429 3430 3431 3432 3433 3434 3435
static void atl1_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
	void *p)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_hw *hw = &adapter->hw;
	unsigned int i;
	u32 *regbuf = p;
3436

J
Jay Cliburn 已提交
3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473
	for (i = 0; i < ATL1_REG_COUNT; i++) {
		/*
		 * This switch statement avoids reserved regions
		 * of register space.
		 */
		switch (i) {
		case 6 ... 9:
		case 14:
		case 29 ... 31:
		case 34 ... 63:
		case 75 ... 127:
		case 136 ... 1023:
		case 1027 ... 1087:
		case 1091 ... 1151:
		case 1194 ... 1195:
		case 1200 ... 1201:
		case 1206 ... 1213:
		case 1216 ... 1279:
		case 1290 ... 1311:
		case 1323 ... 1343:
		case 1358 ... 1359:
		case 1368 ... 1375:
		case 1378 ... 1383:
		case 1388 ... 1391:
		case 1393 ... 1395:
		case 1402 ... 1403:
		case 1410 ... 1471:
		case 1522 ... 1535:
			/* reserved region; don't read it */
			regbuf[i] = 0;
			break;
		default:
			/* unreserved region */
			regbuf[i] = ioread32(hw->hw_addr + (i * sizeof(u32)));
		}
	}
}
3474

J
Jay Cliburn 已提交
3475 3476 3477 3478 3479 3480
static void atl1_get_ringparam(struct net_device *netdev,
	struct ethtool_ringparam *ring)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_tpd_ring *txdr = &adapter->tpd_ring;
	struct atl1_rfd_ring *rxdr = &adapter->rfd_ring;
3481

J
Jay Cliburn 已提交
3482 3483 3484 3485 3486 3487 3488 3489 3490
	ring->rx_max_pending = ATL1_MAX_RFD;
	ring->tx_max_pending = ATL1_MAX_TPD;
	ring->rx_mini_max_pending = 0;
	ring->rx_jumbo_max_pending = 0;
	ring->rx_pending = rxdr->count;
	ring->tx_pending = txdr->count;
	ring->rx_mini_pending = 0;
	ring->rx_jumbo_pending = 0;
}
3491

J
Jay Cliburn 已提交
3492 3493 3494 3495 3496 3497 3498
static int atl1_set_ringparam(struct net_device *netdev,
	struct ethtool_ringparam *ring)
{
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_tpd_ring *tpdr = &adapter->tpd_ring;
	struct atl1_rrd_ring *rrdr = &adapter->rrd_ring;
	struct atl1_rfd_ring *rfdr = &adapter->rfd_ring;
3499

J
Jay Cliburn 已提交
3500 3501 3502 3503 3504
	struct atl1_tpd_ring tpd_old, tpd_new;
	struct atl1_rfd_ring rfd_old, rfd_new;
	struct atl1_rrd_ring rrd_old, rrd_new;
	struct atl1_ring_header rhdr_old, rhdr_new;
	int err;
3505

J
Jay Cliburn 已提交
3506 3507 3508 3509
	tpd_old = adapter->tpd_ring;
	rfd_old = adapter->rfd_ring;
	rrd_old = adapter->rrd_ring;
	rhdr_old = adapter->ring_header;
3510

J
Jay Cliburn 已提交
3511 3512
	if (netif_running(adapter->netdev))
		atl1_down(adapter);
3513

J
Jay Cliburn 已提交
3514 3515 3516 3517 3518
	rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD);
	rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD :
			rfdr->count;
	rfdr->count = (rfdr->count + 3) & ~3;
	rrdr->count = rfdr->count;
3519

J
Jay Cliburn 已提交
3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534
	tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD);
	tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD :
			tpdr->count;
	tpdr->count = (tpdr->count + 3) & ~3;

	if (netif_running(adapter->netdev)) {
		/* try to get new resources before deleting old */
		err = atl1_setup_ring_resources(adapter);
		if (err)
			goto err_setup_ring;

		/*
		 * save the new, restore the old in order to free it,
		 * then restore the new back again
		 */
3535

J
Jay Cliburn 已提交
3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548
		rfd_new = adapter->rfd_ring;
		rrd_new = adapter->rrd_ring;
		tpd_new = adapter->tpd_ring;
		rhdr_new = adapter->ring_header;
		adapter->rfd_ring = rfd_old;
		adapter->rrd_ring = rrd_old;
		adapter->tpd_ring = tpd_old;
		adapter->ring_header = rhdr_old;
		atl1_free_ring_resources(adapter);
		adapter->rfd_ring = rfd_new;
		adapter->rrd_ring = rrd_new;
		adapter->tpd_ring = tpd_new;
		adapter->ring_header = rhdr_new;
3549

J
Jay Cliburn 已提交
3550 3551 3552 3553
		err = atl1_up(adapter);
		if (err)
			return err;
	}
3554
	return 0;
J
Jay Cliburn 已提交
3555 3556 3557 3558 3559 3560 3561 3562

err_setup_ring:
	adapter->rfd_ring = rfd_old;
	adapter->rrd_ring = rrd_old;
	adapter->tpd_ring = tpd_old;
	adapter->ring_header = rhdr_old;
	atl1_up(adapter);
	return err;
3563 3564
}

J
Jay Cliburn 已提交
3565 3566
static void atl1_get_pauseparam(struct net_device *netdev,
	struct ethtool_pauseparam *epause)
3567
{
J
Jay Cliburn 已提交
3568 3569
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_hw *hw = &adapter->hw;
3570

J
Jay Cliburn 已提交
3571 3572 3573 3574 3575
	if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
	    hw->media_type == MEDIA_TYPE_1000M_FULL) {
		epause->autoneg = AUTONEG_ENABLE;
	} else {
		epause->autoneg = AUTONEG_DISABLE;
3576
	}
J
Jay Cliburn 已提交
3577 3578
	epause->rx_pause = 1;
	epause->tx_pause = 1;
3579 3580
}

J
Jay Cliburn 已提交
3581 3582
static int atl1_set_pauseparam(struct net_device *netdev,
	struct ethtool_pauseparam *epause)
3583
{
J
Jay Cliburn 已提交
3584 3585
	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_hw *hw = &adapter->hw;
3586

J
Jay Cliburn 已提交
3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597
	if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
	    hw->media_type == MEDIA_TYPE_1000M_FULL) {
		epause->autoneg = AUTONEG_ENABLE;
	} else {
		epause->autoneg = AUTONEG_DISABLE;
	}

	epause->rx_pause = 1;
	epause->tx_pause = 1;

	return 0;
3598 3599
}

J
Jay Cliburn 已提交
3600 3601
/* FIXME: is this right? -- CHS */
static u32 atl1_get_rx_csum(struct net_device *netdev)
3602
{
J
Jay Cliburn 已提交
3603 3604
	return 1;
}
3605

J
Jay Cliburn 已提交
3606 3607 3608 3609 3610
static void atl1_get_strings(struct net_device *netdev, u32 stringset,
	u8 *data)
{
	u8 *p = data;
	int i;
3611

J
Jay Cliburn 已提交
3612 3613 3614 3615 3616 3617 3618 3619
	switch (stringset) {
	case ETH_SS_STATS:
		for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
			memcpy(p, atl1_gstrings_stats[i].stat_string,
				ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		break;
3620 3621 3622
	}
}

J
Jay Cliburn 已提交
3623
static int atl1_nway_reset(struct net_device *netdev)
3624
{
J
Jay Cliburn 已提交
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	struct atl1_adapter *adapter = netdev_priv(netdev);
	struct atl1_hw *hw = &adapter->hw;
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	if (netif_running(netdev)) {
		u16 phy_data;
		atl1_down(adapter);
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		if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
			hw->media_type == MEDIA_TYPE_1000M_FULL) {
			phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
		} else {
			switch (hw->media_type) {
			case MEDIA_TYPE_100M_FULL:
				phy_data = MII_CR_FULL_DUPLEX |
					MII_CR_SPEED_100 | MII_CR_RESET;
				break;
			case MEDIA_TYPE_100M_HALF:
				phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
				break;
			case MEDIA_TYPE_10M_FULL:
				phy_data = MII_CR_FULL_DUPLEX |
					MII_CR_SPEED_10 | MII_CR_RESET;
				break;
			default:
				/* MEDIA_TYPE_10M_HALF */
				phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
			}
		}
		atl1_write_phy_reg(hw, MII_BMCR, phy_data);
		atl1_up(adapter);
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	}
	return 0;
}

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const struct ethtool_ops atl1_ethtool_ops = {
	.get_settings		= atl1_get_settings,
	.set_settings		= atl1_set_settings,
	.get_drvinfo		= atl1_get_drvinfo,
	.get_wol		= atl1_get_wol,
	.set_wol		= atl1_set_wol,
	.get_msglevel		= atl1_get_msglevel,
	.set_msglevel		= atl1_set_msglevel,
	.get_regs_len		= atl1_get_regs_len,
	.get_regs		= atl1_get_regs,
	.get_ringparam		= atl1_get_ringparam,
	.set_ringparam		= atl1_set_ringparam,
	.get_pauseparam		= atl1_get_pauseparam,
	.set_pauseparam		= atl1_set_pauseparam,
	.get_rx_csum		= atl1_get_rx_csum,
	.set_tx_csum		= ethtool_op_set_tx_hw_csum,
	.get_link		= ethtool_op_get_link,
	.set_sg			= ethtool_op_set_sg,
	.get_strings		= atl1_get_strings,
	.nway_reset		= atl1_nway_reset,
	.get_ethtool_stats	= atl1_get_ethtool_stats,
	.get_sset_count		= atl1_get_sset_count,
	.set_tso		= ethtool_op_set_tso,
};