/*
 * tg3.c: Broadcom Tigon3 ethernet driver.
 *
 * Copyright (C) 2001, 2002, 2003, 2004 David S. Miller (davem@redhat.com)
 * Copyright (C) 2001, 2002, 2003 Jeff Garzik (jgarzik@pobox.com)
 * Copyright (C) 2004 Sun Microsystems Inc.
 * Copyright (C) 2005-2009 Broadcom Corporation.
 *
 * Firmware is:
 *      Derived from proprietary unpublished source code,
 *      Copyright (C) 2000-2003 Broadcom Corporation.
 *
 *      Permission is hereby granted for the distribution of this firmware
 *      data in hexadecimal or equivalent format, provided this copyright
 *      notice is accompanying it.
 */


#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/in.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/brcmphy.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/workqueue.h>
#include <linux/prefetch.h>
#include <linux/dma-mapping.h>
#include <linux/firmware.h>

#include <net/checksum.h>
#include <net/ip.h>

#include <asm/system.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <asm/uaccess.h>

#ifdef CONFIG_SPARC
#include <asm/idprom.h>
#include <asm/prom.h>
#endif

#define BAR_0   0
#define BAR_2   2

#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#define TG3_VLAN_TAG_USED 1
#else
#define TG3_VLAN_TAG_USED 0
#endif

#include "tg3.h"

#define DRV_MODULE_NAME         "tg3"
#define PFX DRV_MODULE_NAME     ": "
#define DRV_MODULE_VERSION      "3.99"
#define DRV_MODULE_RELDATE      "April 20, 2009"

#define TG3_DEF_MAC_MODE        0
#define TG3_DEF_RX_MODE         0
#define TG3_DEF_TX_MODE         0
#define TG3_DEF_MSG_ENABLE        \
        (NETIF_MSG_DRV          | \
         NETIF_MSG_PROBE        | \
         NETIF_MSG_LINK         | \
         NETIF_MSG_TIMER        | \
         NETIF_MSG_IFDOWN       | \
         NETIF_MSG_IFUP         | \
         NETIF_MSG_RX_ERR       | \
         NETIF_MSG_TX_ERR)

/* length of time before we decide the hardware is borked,
 * and dev->tx_timeout() should be called to fix the problem
 */
#define TG3_TX_TIMEOUT                  (5 * HZ)

/* hardware minimum and maximum for a single frame's data payload */
#define TG3_MIN_MTU                     60
#define TG3_MAX_MTU(tp) \
        ((tp->tg3_flags2 & TG3_FLG2_JUMBO_CAPABLE) ? 9000 : 1500)

/* These numbers seem to be hard coded in the NIC firmware somehow.
 * You can't change the ring sizes, but you can change where you place
 * them in the NIC onboard memory.
 */
#define TG3_RX_RING_SIZE                512
#define TG3_DEF_RX_RING_PENDING         200
#define TG3_RX_JUMBO_RING_SIZE          256
#define TG3_DEF_RX_JUMBO_RING_PENDING   100

/* Do not place this n-ring entries value into the tp struct itself,
 * we really want to expose these constants to GCC so that modulo et
 * al.  operations are done with shifts and masks instead of with
 * hw multiply/modulo instructions.  Another solution would be to
 * replace things like '% foo' with '& (foo - 1)'.
 */
#define TG3_RX_RCB_RING_SIZE(tp)        \
        ((tp->tg3_flags2 & TG3_FLG2_5705_PLUS) ?  512 : 1024)

#define TG3_TX_RING_SIZE                512
#define TG3_DEF_TX_RING_PENDING         (TG3_TX_RING_SIZE - 1)

#define TG3_RX_RING_BYTES       (sizeof(struct tg3_rx_buffer_desc) * \
                                 TG3_RX_RING_SIZE)
#define TG3_RX_JUMBO_RING_BYTES (sizeof(struct tg3_rx_buffer_desc) * \
                                 TG3_RX_JUMBO_RING_SIZE)
#define TG3_RX_RCB_RING_BYTES(tp) (sizeof(struct tg3_rx_buffer_desc) * \
                                   TG3_RX_RCB_RING_SIZE(tp))
#define TG3_TX_RING_BYTES       (sizeof(struct tg3_tx_buffer_desc) * \
                                 TG3_TX_RING_SIZE)
#define NEXT_TX(N)              (((N) + 1) & (TG3_TX_RING_SIZE - 1))

#define RX_PKT_BUF_SZ           (1536 + tp->rx_offset + 64)
#define RX_JUMBO_PKT_BUF_SZ     (9046 + tp->rx_offset + 64)

/* minimum number of free TX descriptors required to wake up TX process */
#define TG3_TX_WAKEUP_THRESH(tp)                ((tp)->tx_pending / 4)

#define TG3_RAW_IP_ALIGN 2

/* number of ETHTOOL_GSTATS u64's */
#define TG3_NUM_STATS           (sizeof(struct tg3_ethtool_stats)/sizeof(u64))

#define TG3_NUM_TEST            6

#define FIRMWARE_TG3            "tigon/tg3.bin"
#define FIRMWARE_TG3TSO         "tigon/tg3_tso.bin"
#define FIRMWARE_TG3TSO5        "tigon/tg3_tso5.bin"

static char version[] __devinitdata =
        DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";

MODULE_AUTHOR("David S. Miller (davem@redhat.com) and Jeff Garzik (jgarzik@pobox.com)");
MODULE_DESCRIPTION("Broadcom Tigon3 ethernet driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);
MODULE_FIRMWARE(FIRMWARE_TG3);
MODULE_FIRMWARE(FIRMWARE_TG3TSO);
MODULE_FIRMWARE(FIRMWARE_TG3TSO5);


static int tg3_debug = -1;      /* -1 == use TG3_DEF_MSG_ENABLE as value */
module_param(tg3_debug, int, 0);
MODULE_PARM_DESC(tg3_debug, "Tigon3 bitmapped debugging message enable value");

static struct pci_device_id tg3_pci_tbl[] = {
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5700)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5701)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5703)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5704)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702FE)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705M_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702X)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5703X)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5704S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702A3)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5703A3)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5782)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5788)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5789)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5901)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5901_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5704S_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5720)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5721)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5722)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5750)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5750M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5752)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5752M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5754)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5754M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5755)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5755M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5756)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5786)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5787)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5787M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5787F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5714)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5714S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5715)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5715S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5781)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5906)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5906M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5784)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5764)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5723)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5761)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5761E)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5761S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5761SE)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5785)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57780)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57760)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57790)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57720)},
        {PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_9DXX)},
        {PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_9MXX)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC1000)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC1001)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC1003)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC9100)},
        {PCI_DEVICE(PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_TIGON3)},
        {}
};

MODULE_DEVICE_TABLE(pci, tg3_pci_tbl);

static const struct {
        const char string[ETH_GSTRING_LEN];
} ethtool_stats_keys[TG3_NUM_STATS] = {
        { "rx_octets" },
        { "rx_fragments" },
        { "rx_ucast_packets" },
        { "rx_mcast_packets" },
        { "rx_bcast_packets" },
        { "rx_fcs_errors" },
        { "rx_align_errors" },
        { "rx_xon_pause_rcvd" },
        { "rx_xoff_pause_rcvd" },
        { "rx_mac_ctrl_rcvd" },
        { "rx_xoff_entered" },
        { "rx_frame_too_long_errors" },
        { "rx_jabbers" },
        { "rx_undersize_packets" },
        { "rx_in_length_errors" },
        { "rx_out_length_errors" },
        { "rx_64_or_less_octet_packets" },
        { "rx_65_to_127_octet_packets" },
        { "rx_128_to_255_octet_packets" },
        { "rx_256_to_511_octet_packets" },
        { "rx_512_to_1023_octet_packets" },
        { "rx_1024_to_1522_octet_packets" },
        { "rx_1523_to_2047_octet_packets" },
        { "rx_2048_to_4095_octet_packets" },
        { "rx_4096_to_8191_octet_packets" },
        { "rx_8192_to_9022_octet_packets" },

        { "tx_octets" },
        { "tx_collisions" },

        { "tx_xon_sent" },
        { "tx_xoff_sent" },
        { "tx_flow_control" },
        { "tx_mac_errors" },
        { "tx_single_collisions" },
        { "tx_mult_collisions" },
        { "tx_deferred" },
        { "tx_excessive_collisions" },
        { "tx_late_collisions" },
        { "tx_collide_2times" },
        { "tx_collide_3times" },
        { "tx_collide_4times" },
        { "tx_collide_5times" },
        { "tx_collide_6times" },
        { "tx_collide_7times" },
        { "tx_collide_8times" },
        { "tx_collide_9times" },
        { "tx_collide_10times" },
        { "tx_collide_11times" },
        { "tx_collide_12times" },
        { "tx_collide_13times" },
        { "tx_collide_14times" },
        { "tx_collide_15times" },
        { "tx_ucast_packets" },
        { "tx_mcast_packets" },
        { "tx_bcast_packets" },
        { "tx_carrier_sense_errors" },
        { "tx_discards" },
        { "tx_errors" },

        { "dma_writeq_full" },
        { "dma_write_prioq_full" },
        { "rxbds_empty" },
        { "rx_discards" },
        { "rx_errors" },
        { "rx_threshold_hit" },

        { "dma_readq_full" },
        { "dma_read_prioq_full" },
        { "tx_comp_queue_full" },

        { "ring_set_send_prod_index" },
        { "ring_status_update" },
        { "nic_irqs" },
        { "nic_avoided_irqs" },
        { "nic_tx_threshold_hit" }
};

static const struct {
        const char string[ETH_GSTRING_LEN];
} ethtool_test_keys[TG3_NUM_TEST] = {
        { "nvram test     (online) " },
        { "link test      (online) " },
        { "register test  (offline)" },
        { "memory test    (offline)" },
        { "loopback test  (offline)" },
        { "interrupt test (offline)" },
};

static void tg3_write32(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->regs + off);
}

static u32 tg3_read32(struct tg3 *tp, u32 off)
{
        return (readl(tp->regs + off));
}

static void tg3_ape_write32(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->aperegs + off);
}

static u32 tg3_ape_read32(struct tg3 *tp, u32 off)
{
        return (readl(tp->aperegs + off));
}

static void tg3_write_indirect_reg32(struct tg3 *tp, u32 off, u32 val)
{
        unsigned long flags;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_DATA, val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
}

static void tg3_write_flush_reg32(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->regs + off);
        readl(tp->regs + off);
}

static u32 tg3_read_indirect_reg32(struct tg3 *tp, u32 off)
{
        unsigned long flags;
        u32 val;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off);
        pci_read_config_dword(tp->pdev, TG3PCI_REG_DATA, &val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
        return val;
}

static void tg3_write_indirect_mbox(struct tg3 *tp, u32 off, u32 val)
{
        unsigned long flags;

        if (off == (MAILBOX_RCVRET_CON_IDX_0 + TG3_64BIT_REG_LOW)) {
                pci_write_config_dword(tp->pdev, TG3PCI_RCV_RET_RING_CON_IDX +
                                       TG3_64BIT_REG_LOW, val);
                return;
        }
        if (off == (MAILBOX_RCV_STD_PROD_IDX + TG3_64BIT_REG_LOW)) {
                pci_write_config_dword(tp->pdev, TG3PCI_STD_RING_PROD_IDX +
                                       TG3_64BIT_REG_LOW, val);
                return;
        }

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off + 0x5600);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_DATA, val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);

        /* In indirect mode when disabling interrupts, we also need
         * to clear the interrupt bit in the GRC local ctrl register.
         */
        if ((off == (MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW)) &&
            (val == 0x1)) {
                pci_write_config_dword(tp->pdev, TG3PCI_MISC_LOCAL_CTRL,
                                       tp->grc_local_ctrl|GRC_LCLCTRL_CLEARINT);
        }
}

static u32 tg3_read_indirect_mbox(struct tg3 *tp, u32 off)
{
        unsigned long flags;
        u32 val;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off + 0x5600);
        pci_read_config_dword(tp->pdev, TG3PCI_REG_DATA, &val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
        return val;
}

/* usec_wait specifies the wait time in usec when writing to certain registers
 * where it is unsafe to read back the register without some delay.
 * GRC_LOCAL_CTRL is one example if the GPIOs are toggled to switch power.
 * TG3PCI_CLOCK_CTRL is another example if the clock frequencies are changed.
 */
static void _tw32_flush(struct tg3 *tp, u32 off, u32 val, u32 usec_wait)
{
        if ((tp->tg3_flags & TG3_FLAG_PCIX_TARGET_HWBUG) ||
            (tp->tg3_flags2 & TG3_FLG2_ICH_WORKAROUND))
                /* Non-posted methods */
                tp->write32(tp, off, val);
        else {
                /* Posted method */
                tg3_write32(tp, off, val);
                if (usec_wait)
                        udelay(usec_wait);
                tp->read32(tp, off);
        }
        /* Wait again after the read for the posted method to guarantee that
         * the wait time is met.
         */
        if (usec_wait)
                udelay(usec_wait);
}

static inline void tw32_mailbox_flush(struct tg3 *tp, u32 off, u32 val)
{
        tp->write32_mbox(tp, off, val);
        if (!(tp->tg3_flags & TG3_FLAG_MBOX_WRITE_REORDER) &&
            !(tp->tg3_flags2 & TG3_FLG2_ICH_WORKAROUND))
                tp->read32_mbox(tp, off);
}

static void tg3_write32_tx_mbox(struct tg3 *tp, u32 off, u32 val)
{
        void __iomem *mbox = tp->regs + off;
        writel(val, mbox);
        if (tp->tg3_flags & TG3_FLAG_TXD_MBOX_HWBUG)
                writel(val, mbox);
        if (tp->tg3_flags & TG3_FLAG_MBOX_WRITE_REORDER)
                readl(mbox);
}

static u32 tg3_read32_mbox_5906(struct tg3 *tp, u32 off)
{
        return (readl(tp->regs + off + GRCMBOX_BASE));
}

static void tg3_write32_mbox_5906(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->regs + off + GRCMBOX_BASE);
}

#define tw32_mailbox(reg, val)  tp->write32_mbox(tp, reg, val)
#define tw32_mailbox_f(reg, val)        tw32_mailbox_flush(tp, (reg), (val))
#define tw32_rx_mbox(reg, val)  tp->write32_rx_mbox(tp, reg, val)
#define tw32_tx_mbox(reg, val)  tp->write32_tx_mbox(tp, reg, val)
#define tr32_mailbox(reg)       tp->read32_mbox(tp, reg)

#define tw32(reg,val)           tp->write32(tp, reg, val)
#define tw32_f(reg,val)         _tw32_flush(tp,(reg),(val), 0)
#define tw32_wait_f(reg,val,us) _tw32_flush(tp,(reg),(val), (us))
#define tr32(reg)               tp->read32(tp, reg)

static void tg3_write_mem(struct tg3 *tp, u32 off, u32 val)
{
        unsigned long flags;

        if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) &&
            (off >= NIC_SRAM_STATS_BLK) && (off < NIC_SRAM_TX_BUFFER_DESC))
                return;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        if (tp->tg3_flags & TG3_FLAG_SRAM_USE_CONFIG) {
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, off);
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_DATA, val);

                /* Always leave this as zero. */
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, 0);
        } else {
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, off);
                tw32_f(TG3PCI_MEM_WIN_DATA, val);

                /* Always leave this as zero. */
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, 0);
        }
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
}

static void tg3_read_mem(struct tg3 *tp, u32 off, u32 *val)
{
        unsigned long flags;

        if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) &&
            (off >= NIC_SRAM_STATS_BLK) && (off < NIC_SRAM_TX_BUFFER_DESC)) {
                *val = 0;
                return;
        }

        spin_lock_irqsave(&tp->indirect_lock, flags);
        if (tp->tg3_flags & TG3_FLAG_SRAM_USE_CONFIG) {
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, off);
                pci_read_config_dword(tp->pdev, TG3PCI_MEM_WIN_DATA, val);

                /* Always leave this as zero. */
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, 0);
        } else {
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, off);
                *val = tr32(TG3PCI_MEM_WIN_DATA);

                /* Always leave this as zero. */
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, 0);
        }
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
}

static void tg3_ape_lock_init(struct tg3 *tp)
{
        int i;

        /* Make sure the driver hasn't any stale locks. */
        for (i = 0; i < 8; i++)
                tg3_ape_write32(tp, TG3_APE_LOCK_GRANT + 4 * i,
                                APE_LOCK_GRANT_DRIVER);
}

static int tg3_ape_lock(struct tg3 *tp, int locknum)
{
        int i, off;
        int ret = 0;
        u32 status;

        if (!(tp->tg3_flags3 & TG3_FLG3_ENABLE_APE))
                return 0;

        switch (locknum) {
                case TG3_APE_LOCK_GRC:
                case TG3_APE_LOCK_MEM:
                        break;
                default:
                        return -EINVAL;
        }

        off = 4 * locknum;

        tg3_ape_write32(tp, TG3_APE_LOCK_REQ + off, APE_LOCK_REQ_DRIVER);

        /* Wait for up to 1 millisecond to acquire lock. */
        for (i = 0; i < 100; i++) {
                status = tg3_ape_read32(tp, TG3_APE_LOCK_GRANT + off);
                if (status == APE_LOCK_GRANT_DRIVER)
                        break;
                udelay(10);
        }

        if (status != APE_LOCK_GRANT_DRIVER) {
                /* Revoke the lock request. */
                tg3_ape_write32(tp, TG3_APE_LOCK_GRANT + off,
                                APE_LOCK_GRANT_DRIVER);

                ret = -EBUSY;
        }

        return ret;
}

static void tg3_ape_unlock(struct tg3 *tp, int locknum)
{
        int off;

        if (!(tp->tg3_flags3 & TG3_FLG3_ENABLE_APE))
                return;

        switch (locknum) {
                case TG3_APE_LOCK_GRC:
                case TG3_APE_LOCK_MEM:
                        break;
                default:
                        return;
        }

        off = 4 * locknum;
        tg3_ape_write32(tp, TG3_APE_LOCK_GRANT + off, APE_LOCK_GRANT_DRIVER);
}

static void tg3_disable_ints(struct tg3 *tp)
{
        tw32(TG3PCI_MISC_HOST_CTRL,
             (tp->misc_host_ctrl | MISC_HOST_CTRL_MASK_PCI_INT));
        tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001);
}

static inline void tg3_cond_int(struct tg3 *tp)
{
        if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) &&
            (tp->hw_status->status & SD_STATUS_UPDATED))
                tw32(GRC_LOCAL_CTRL, tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
        else
                tw32(HOSTCC_MODE, tp->coalesce_mode |
                     (HOSTCC_MODE_ENABLE | HOSTCC_MODE_NOW));
}

static void tg3_enable_ints(struct tg3 *tp)
{
        tp->irq_sync = 0;
        wmb();

        tw32(TG3PCI_MISC_HOST_CTRL,
             (tp->misc_host_ctrl & ~MISC_HOST_CTRL_MASK_PCI_INT));
        tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
                       (tp->last_tag << 24));
        if (tp->tg3_flags2 & TG3_FLG2_1SHOT_MSI)
                tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
                               (tp->last_tag << 24));
        tg3_cond_int(tp);
}

static inline unsigned int tg3_has_work(struct tg3 *tp)
{
        struct tg3_hw_status *sblk = tp->hw_status;
        unsigned int work_exists = 0;

        /* check for phy events */
        if (!(tp->tg3_flags &
              (TG3_FLAG_USE_LINKCHG_REG |
               TG3_FLAG_POLL_SERDES))) {
                if (sblk->status & SD_STATUS_LINK_CHG)
                        work_exists = 1;
        }
        /* check for RX/TX work to do */
        if (sblk->idx[0].tx_consumer != tp->tx_cons ||
            sblk->idx[0].rx_producer != tp->rx_rcb_ptr)
                work_exists = 1;

        return work_exists;
}

/* tg3_restart_ints
 *  similar to tg3_enable_ints, but it accurately determines whether there
 *  is new work pending and can return without flushing the PIO write
 *  which reenables interrupts
 */
static void tg3_restart_ints(struct tg3 *tp)
{
        tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
                     tp->last_tag << 24);
        mmiowb();

        /* When doing tagged status, this work check is unnecessary.
         * The last_tag we write above tells the chip which piece of
         * work we've completed.
         */
        if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) &&
            tg3_has_work(tp))
                tw32(HOSTCC_MODE, tp->coalesce_mode |
                     (HOSTCC_MODE_ENABLE | HOSTCC_MODE_NOW));
}

static inline void tg3_netif_stop(struct tg3 *tp)
{
        tp->dev->trans_start = jiffies; /* prevent tx timeout */
        napi_disable(&tp->napi);
        netif_tx_disable(tp->dev);
}

static inline void tg3_netif_start(struct tg3 *tp)
{
        netif_wake_queue(tp->dev);
        /* NOTE: unconditional netif_wake_queue is only appropriate
         * so long as all callers are assured to have free tx slots
         * (such as after tg3_init_hw)
         */
        napi_enable(&tp->napi);
        tp->hw_status->status |= SD_STATUS_UPDATED;
        tg3_enable_ints(tp);
}

static void tg3_switch_clocks(struct tg3 *tp)
{
        u32 clock_ctrl = tr32(TG3PCI_CLOCK_CTRL);
        u32 orig_clock_ctrl;

        if ((tp->tg3_flags & TG3_FLAG_CPMU_PRESENT) ||
            (tp->tg3_flags2 & TG3_FLG2_5780_CLASS))
                return;

        orig_clock_ctrl = clock_ctrl;
        clock_ctrl &= (CLOCK_CTRL_FORCE_CLKRUN |
                       CLOCK_CTRL_CLKRUN_OENABLE |
                       0x1f);
        tp->pci_clock_ctrl = clock_ctrl;

        if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS) {
                if (orig_clock_ctrl & CLOCK_CTRL_625_CORE) {
                        tw32_wait_f(TG3PCI_CLOCK_CTRL,
                                    clock_ctrl | CLOCK_CTRL_625_CORE, 40);
                }
        } else if ((orig_clock_ctrl & CLOCK_CTRL_44MHZ_CORE) != 0) {
                tw32_wait_f(TG3PCI_CLOCK_CTRL,
                            clock_ctrl |
                            (CLOCK_CTRL_44MHZ_CORE | CLOCK_CTRL_ALTCLK),
                            40);
                tw32_wait_f(TG3PCI_CLOCK_CTRL,
                            clock_ctrl | (CLOCK_CTRL_ALTCLK),
                            40);
        }
        tw32_wait_f(TG3PCI_CLOCK_CTRL, clock_ctrl, 40);
}

#define PHY_BUSY_LOOPS  5000

static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
{
        u32 frame_val;
        unsigned int loops;
        int ret;

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE,
                     (tp->mi_mode & ~MAC_MI_MODE_AUTO_POLL));
                udelay(80);
        }

        *val = 0x0;

        frame_val  = ((PHY_ADDR << MI_COM_PHY_ADDR_SHIFT) &
                      MI_COM_PHY_ADDR_MASK);
        frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
                      MI_COM_REG_ADDR_MASK);
        frame_val |= (MI_COM_CMD_READ | MI_COM_START);

        tw32_f(MAC_MI_COM, frame_val);

        loops = PHY_BUSY_LOOPS;
        while (loops != 0) {
                udelay(10);
                frame_val = tr32(MAC_MI_COM);

                if ((frame_val & MI_COM_BUSY) == 0) {
                        udelay(5);
                        frame_val = tr32(MAC_MI_COM);
                        break;
                }
                loops -= 1;
        }

        ret = -EBUSY;
        if (loops != 0) {
                *val = frame_val & MI_COM_DATA_MASK;
                ret = 0;
        }

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE, tp->mi_mode);
                udelay(80);
        }

        return ret;
}

static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
{
        u32 frame_val;
        unsigned int loops;
        int ret;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906 &&
            (reg == MII_TG3_CTRL || reg == MII_TG3_AUX_CTRL))
                return 0;

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE,
                     (tp->mi_mode & ~MAC_MI_MODE_AUTO_POLL));
                udelay(80);
        }

        frame_val  = ((PHY_ADDR << MI_COM_PHY_ADDR_SHIFT) &
                      MI_COM_PHY_ADDR_MASK);
        frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
                      MI_COM_REG_ADDR_MASK);
        frame_val |= (val & MI_COM_DATA_MASK);
        frame_val |= (MI_COM_CMD_WRITE | MI_COM_START);

        tw32_f(MAC_MI_COM, frame_val);

        loops = PHY_BUSY_LOOPS;
        while (loops != 0) {
                udelay(10);
                frame_val = tr32(MAC_MI_COM);
                if ((frame_val & MI_COM_BUSY) == 0) {
                        udelay(5);
                        frame_val = tr32(MAC_MI_COM);
                        break;
                }
                loops -= 1;
        }

        ret = -EBUSY;
        if (loops != 0)
                ret = 0;

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE, tp->mi_mode);
                udelay(80);
        }

        return ret;
}

static int tg3_bmcr_reset(struct tg3 *tp)
{
        u32 phy_control;
        int limit, err;

        /* OK, reset it, and poll the BMCR_RESET bit until it
         * clears or we time out.
         */
        phy_control = BMCR_RESET;
        err = tg3_writephy(tp, MII_BMCR, phy_control);
        if (err != 0)
                return -EBUSY;

        limit = 5000;
        while (limit--) {
                err = tg3_readphy(tp, MII_BMCR, &phy_control);
                if (err != 0)
                        return -EBUSY;

                if ((phy_control & BMCR_RESET) == 0) {
                        udelay(40);
                        break;
                }
                udelay(10);
        }
        if (limit < 0)
                return -EBUSY;

        return 0;
}

static int tg3_mdio_read(struct mii_bus *bp, int mii_id, int reg)
{
        struct tg3 *tp = bp->priv;
        u32 val;

        if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_PAUSED)
                return -EAGAIN;

        if (tg3_readphy(tp, reg, &val))
                return -EIO;

        return val;
}

static int tg3_mdio_write(struct mii_bus *bp, int mii_id, int reg, u16 val)
{
        struct tg3 *tp = bp->priv;

        if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_PAUSED)
                return -EAGAIN;

        if (tg3_writephy(tp, reg, val))
                return -EIO;

        return 0;
}

static int tg3_mdio_reset(struct mii_bus *bp)
{
        return 0;
}

static void tg3_mdio_config_5785(struct tg3 *tp)
{
        u32 val;
        struct phy_device *phydev;

        phydev = tp->mdio_bus->phy_map[PHY_ADDR];
        switch (phydev->drv->phy_id & phydev->drv->phy_id_mask) {
        case TG3_PHY_ID_BCM50610:
                val = MAC_PHYCFG2_50610_LED_MODES;
                break;
        case TG3_PHY_ID_BCMAC131:
                val = MAC_PHYCFG2_AC131_LED_MODES;
                break;
        case TG3_PHY_ID_RTL8211C:
                val = MAC_PHYCFG2_RTL8211C_LED_MODES;
                break;
        case TG3_PHY_ID_RTL8201E:
                val = MAC_PHYCFG2_RTL8201E_LED_MODES;
                break;
        default:
                return;
        }

        if (phydev->interface != PHY_INTERFACE_MODE_RGMII) {
                tw32(MAC_PHYCFG2, val);

                val = tr32(MAC_PHYCFG1);
                val &= ~MAC_PHYCFG1_RGMII_INT;
                tw32(MAC_PHYCFG1, val);

                return;
        }

        if (!(tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE))
                val |= MAC_PHYCFG2_EMODE_MASK_MASK |
                       MAC_PHYCFG2_FMODE_MASK_MASK |
                       MAC_PHYCFG2_GMODE_MASK_MASK |
                       MAC_PHYCFG2_ACT_MASK_MASK   |
                       MAC_PHYCFG2_QUAL_MASK_MASK |
                       MAC_PHYCFG2_INBAND_ENABLE;

        tw32(MAC_PHYCFG2, val);

        val = tr32(MAC_PHYCFG1) & ~(MAC_PHYCFG1_RGMII_EXT_RX_DEC |
                                    MAC_PHYCFG1_RGMII_SND_STAT_EN);
        if (tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE) {
                if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_RX_EN)
                        val |= MAC_PHYCFG1_RGMII_EXT_RX_DEC;
                if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_TX_EN)
                        val |= MAC_PHYCFG1_RGMII_SND_STAT_EN;
        }
        tw32(MAC_PHYCFG1, val | MAC_PHYCFG1_RGMII_INT | MAC_PHYCFG1_TXC_DRV);

        val = tr32(MAC_EXT_RGMII_MODE);
        val &= ~(MAC_RGMII_MODE_RX_INT_B |
                 MAC_RGMII_MODE_RX_QUALITY |
                 MAC_RGMII_MODE_RX_ACTIVITY |
                 MAC_RGMII_MODE_RX_ENG_DET |
                 MAC_RGMII_MODE_TX_ENABLE |
                 MAC_RGMII_MODE_TX_LOWPWR |
                 MAC_RGMII_MODE_TX_RESET);
        if (!(tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE)) {
                if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_RX_EN)
                        val |= MAC_RGMII_MODE_RX_INT_B |
                               MAC_RGMII_MODE_RX_QUALITY |
                               MAC_RGMII_MODE_RX_ACTIVITY |
                               MAC_RGMII_MODE_RX_ENG_DET;
                if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_TX_EN)
                        val |= MAC_RGMII_MODE_TX_ENABLE |
                               MAC_RGMII_MODE_TX_LOWPWR |
                               MAC_RGMII_MODE_TX_RESET;
        }
        tw32(MAC_EXT_RGMII_MODE, val);
}

static void tg3_mdio_start(struct tg3 *tp)
{
        if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED) {
                mutex_lock(&tp->mdio_bus->mdio_lock);
                tp->tg3_flags3 &= ~TG3_FLG3_MDIOBUS_PAUSED;
                mutex_unlock(&tp->mdio_bus->mdio_lock);
        }

        tp->mi_mode &= ~MAC_MI_MODE_AUTO_POLL;
        tw32_f(MAC_MI_MODE, tp->mi_mode);
        udelay(80);

        if ((tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED) &&
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
                tg3_mdio_config_5785(tp);
}

static void tg3_mdio_stop(struct tg3 *tp)
{
        if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED) {
                mutex_lock(&tp->mdio_bus->mdio_lock);
                tp->tg3_flags3 |= TG3_FLG3_MDIOBUS_PAUSED;
                mutex_unlock(&tp->mdio_bus->mdio_lock);
        }
}

static int tg3_mdio_init(struct tg3 *tp)
{
        int i;
        u32 reg;
        struct phy_device *phydev;

        tg3_mdio_start(tp);

        if (!(tp->tg3_flags3 & TG3_FLG3_USE_PHYLIB) ||
            (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED))
                return 0;

        tp->mdio_bus = mdiobus_alloc();
        if (tp->mdio_bus == NULL)
                return -ENOMEM;

        tp->mdio_bus->name     = "tg3 mdio bus";
        snprintf(tp->mdio_bus->id, MII_BUS_ID_SIZE, "%x",
                 (tp->pdev->bus->number << 8) | tp->pdev->devfn);
        tp->mdio_bus->priv     = tp;
        tp->mdio_bus->parent   = &tp->pdev->dev;
        tp->mdio_bus->read     = &tg3_mdio_read;
        tp->mdio_bus->write    = &tg3_mdio_write;
        tp->mdio_bus->reset    = &tg3_mdio_reset;
        tp->mdio_bus->phy_mask = ~(1 << PHY_ADDR);
        tp->mdio_bus->irq      = &tp->mdio_irq[0];

        for (i = 0; i < PHY_MAX_ADDR; i++)
                tp->mdio_bus->irq[i] = PHY_POLL;

        /* The bus registration will look for all the PHYs on the mdio bus.
         * Unfortunately, it does not ensure the PHY is powered up before
         * accessing the PHY ID registers.  A chip reset is the
         * quickest way to bring the device back to an operational state..
         */
        if (tg3_readphy(tp, MII_BMCR, &reg) || (reg & BMCR_PDOWN))
                tg3_bmcr_reset(tp);

        i = mdiobus_register(tp->mdio_bus);
        if (i) {
                printk(KERN_WARNING "%s: mdiobus_reg failed (0x%x)\n",
                        tp->dev->name, i);
                mdiobus_free(tp->mdio_bus);
                return i;
        }

        phydev = tp->mdio_bus->phy_map[PHY_ADDR];

        if (!phydev || !phydev->drv) {
                printk(KERN_WARNING "%s: No PHY devices\n", tp->dev->name);
                mdiobus_unregister(tp->mdio_bus);
                mdiobus_free(tp->mdio_bus);
                return -ENODEV;
        }

        switch (phydev->drv->phy_id & phydev->drv->phy_id_mask) {
        case TG3_PHY_ID_BCM57780:
                phydev->interface = PHY_INTERFACE_MODE_GMII;
                break;
        case TG3_PHY_ID_BCM50610:
                if (tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE)
                        phydev->dev_flags |= PHY_BRCM_STD_IBND_DISABLE;
                if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_RX_EN)
                        phydev->dev_flags |= PHY_BRCM_EXT_IBND_RX_ENABLE;
                if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_TX_EN)
                        phydev->dev_flags |= PHY_BRCM_EXT_IBND_TX_ENABLE;
                /* fallthru */
        case TG3_PHY_ID_RTL8211C:
                phydev->interface = PHY_INTERFACE_MODE_RGMII;
                break;
        case TG3_PHY_ID_RTL8201E:
        case TG3_PHY_ID_BCMAC131:
                phydev->interface = PHY_INTERFACE_MODE_MII;
                break;
        }

        tp->tg3_flags3 |= TG3_FLG3_MDIOBUS_INITED;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
                tg3_mdio_config_5785(tp);

        return 0;
}

static void tg3_mdio_fini(struct tg3 *tp)
{
        if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED) {
                tp->tg3_flags3 &= ~TG3_FLG3_MDIOBUS_INITED;
                mdiobus_unregister(tp->mdio_bus);
                mdiobus_free(tp->mdio_bus);
                tp->tg3_flags3 &= ~TG3_FLG3_MDIOBUS_PAUSED;
        }
}

/* tp->lock is held. */
static inline void tg3_generate_fw_event(struct tg3 *tp)
{
        u32 val;

        val = tr32(GRC_RX_CPU_EVENT);
        val |= GRC_RX_CPU_DRIVER_EVENT;
        tw32_f(GRC_RX_CPU_EVENT, val);

        tp->last_event_jiffies = jiffies;
}

#define TG3_FW_EVENT_TIMEOUT_USEC 2500

/* tp->lock is held. */
static void tg3_wait_for_event_ack(struct tg3 *tp)
{
        int i;
        unsigned int delay_cnt;
        long time_remain;

        /* If enough time has passed, no wait is necessary. */
        time_remain = (long)(tp->last_event_jiffies + 1 +
                      usecs_to_jiffies(TG3_FW_EVENT_TIMEOUT_USEC)) -
                      (long)jiffies;
        if (time_remain < 0)
                return;

        /* Check if we can shorten the wait time. */
        delay_cnt = jiffies_to_usecs(time_remain);
        if (delay_cnt > TG3_FW_EVENT_TIMEOUT_USEC)
                delay_cnt = TG3_FW_EVENT_TIMEOUT_USEC;
        delay_cnt = (delay_cnt >> 3) + 1;

        for (i = 0; i < delay_cnt; i++) {
                if (!(tr32(GRC_RX_CPU_EVENT) & GRC_RX_CPU_DRIVER_EVENT))
                        break;
                udelay(8);
        }
}

/* tp->lock is held. */
static void tg3_ump_link_report(struct tg3 *tp)
{
        u32 reg;
        u32 val;

        if (!(tp->tg3_flags2 & TG3_FLG2_5780_CLASS) ||
            !(tp->tg3_flags  & TG3_FLAG_ENABLE_ASF))
                return;

        tg3_wait_for_event_ack(tp);

        tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX, FWCMD_NICDRV_LINK_UPDATE);

        tg3_write_mem(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 14);

        val = 0;
        if (!tg3_readphy(tp, MII_BMCR, &reg))
                val = reg << 16;
        if (!tg3_readphy(tp, MII_BMSR, &reg))
                val |= (reg & 0xffff);
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX, val);

        val = 0;
        if (!tg3_readphy(tp, MII_ADVERTISE, &reg))
                val = reg << 16;
        if (!tg3_readphy(tp, MII_LPA, &reg))
                val |= (reg & 0xffff);
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX + 4, val);

        val = 0;
        if (!(tp->tg3_flags2 & TG3_FLG2_MII_SERDES)) {
                if (!tg3_readphy(tp, MII_CTRL1000, &reg))
                        val = reg << 16;
                if (!tg3_readphy(tp, MII_STAT1000, &reg))
                        val |= (reg & 0xffff);
        }
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX + 8, val);

        if (!tg3_readphy(tp, MII_PHYADDR, &reg))
                val = reg << 16;
        else
                val = 0;
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX + 12, val);

        tg3_generate_fw_event(tp);
}

static void tg3_link_report(struct tg3 *tp)
{
        if (!netif_carrier_ok(tp->dev)) {
                if (netif_msg_link(tp))
                        printk(KERN_INFO PFX "%s: Link is down.\n",
                               tp->dev->name);
                tg3_ump_link_report(tp);
        } else if (netif_msg_link(tp)) {
                printk(KERN_INFO PFX "%s: Link is up at %d Mbps, %s duplex.\n",
                       tp->dev->name,
                       (tp->link_config.active_speed == SPEED_1000 ?
                        1000 :
                        (tp->link_config.active_speed == SPEED_100 ?
                         100 : 10)),
                       (tp->link_config.active_duplex == DUPLEX_FULL ?
                        "full" : "half"));

                printk(KERN_INFO PFX
                       "%s: Flow control is %s for TX and %s for RX.\n",
                       tp->dev->name,
                       (tp->link_config.active_flowctrl & FLOW_CTRL_TX) ?
                       "on" : "off",
                       (tp->link_config.active_flowctrl & FLOW_CTRL_RX) ?
                       "on" : "off");
                tg3_ump_link_report(tp);
        }
}

static u16 tg3_advert_flowctrl_1000T(u8 flow_ctrl)
{
        u16 miireg;

        if ((flow_ctrl & FLOW_CTRL_TX) && (flow_ctrl & FLOW_CTRL_RX))
                miireg = ADVERTISE_PAUSE_CAP;
        else if (flow_ctrl & FLOW_CTRL_TX)
                miireg = ADVERTISE_PAUSE_ASYM;
        else if (flow_ctrl & FLOW_CTRL_RX)
                miireg = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
        else
                miireg = 0;

        return miireg;
}

static u16 tg3_advert_flowctrl_1000X(u8 flow_ctrl)
{
        u16 miireg;

        if ((flow_ctrl & FLOW_CTRL_TX) && (flow_ctrl & FLOW_CTRL_RX))
                miireg = ADVERTISE_1000XPAUSE;
        else if (flow_ctrl & FLOW_CTRL_TX)
                miireg = ADVERTISE_1000XPSE_ASYM;
        else if (flow_ctrl & FLOW_CTRL_RX)
                miireg = ADVERTISE_1000XPAUSE | ADVERTISE_1000XPSE_ASYM;
        else
                miireg = 0;

        return miireg;
}

static u8 tg3_resolve_flowctrl_1000X(u16 lcladv, u16 rmtadv)
{
        u8 cap = 0;

        if (lcladv & ADVERTISE_1000XPAUSE) {
                if (lcladv & ADVERTISE_1000XPSE_ASYM) {
                        if (rmtadv & LPA_1000XPAUSE)
                                cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
                        else if (rmtadv & LPA_1000XPAUSE_ASYM)
                                cap = FLOW_CTRL_RX;
                } else {
                        if (rmtadv & LPA_1000XPAUSE)
                                cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
                }
        } else if (lcladv & ADVERTISE_1000XPSE_ASYM) {
                if ((rmtadv & LPA_1000XPAUSE) && (rmtadv & LPA_1000XPAUSE_ASYM))
                        cap = FLOW_CTRL_TX;
        }

        return cap;
}

static void tg3_setup_flow_control(struct tg3 *tp, u32 lcladv, u32 rmtadv)
{
        u8 autoneg;
        u8 flowctrl = 0;
        u32 old_rx_mode = tp->rx_mode;
        u32 old_tx_mode = tp->tx_mode;

        if (tp->tg3_flags3 & TG3_FLG3_USE_PHYLIB)
                autoneg = tp->mdio_bus->phy_map[PHY_ADDR]->autoneg;
        else
                autoneg = tp->link_config.autoneg;

        if (autoneg == AUTONEG_ENABLE &&
            (tp->tg3_flags & TG3_FLAG_PAUSE_AUTONEG)) {
                if (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES)
                        flowctrl = tg3_resolve_flowctrl_1000X(lcladv, rmtadv);
                else
                        flowctrl = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
        } else
                flowctrl = tp->link_config.flowctrl;

        tp->link_config.active_flowctrl = flowctrl;

        if (flowctrl & FLOW_CTRL_RX)
                tp->rx_mode |= RX_MODE_FLOW_CTRL_ENABLE;
        else
                tp->rx_mode &= ~RX_MODE_FLOW_CTRL_ENABLE;

        if (old_rx_mode != tp->rx_mode)
                tw32_f(MAC_RX_MODE, tp->rx_mode);

        if (flowctrl & FLOW_CTRL_TX)
                tp->tx_mode |= TX_MODE_FLOW_CTRL_ENABLE;
        else
                tp->tx_mode &= ~TX_MODE_FLOW_CTRL_ENABLE;

        if (old_tx_mode != tp->tx_mode)
                tw32_f(MAC_TX_MODE, tp->tx_mode);
}

static void tg3_adjust_link(struct net_device *dev)
{
        u8 oldflowctrl, linkmesg = 0;
        u32 mac_mode, lcl_adv, rmt_adv;
        struct tg3 *tp = netdev_priv(dev);
        struct phy_device *phydev = tp->mdio_bus->phy_map[PHY_ADDR];

        spin_lock(&tp->lock);

        mac_mode = tp->mac_mode & ~(MAC_MODE_PORT_MODE_MASK |
                                    MAC_MODE_HALF_DUPLEX);

        oldflowctrl = tp->link_config.active_flowctrl;

        if (phydev->link) {
                lcl_adv = 0;
                rmt_adv = 0;

                if (phydev->speed == SPEED_100 || phydev->speed == SPEED_10)
                        mac_mode |= MAC_MODE_PORT_MODE_MII;
                else
                        mac_mode |= MAC_MODE_PORT_MODE_GMII;

                if (phydev->duplex == DUPLEX_HALF)
                        mac_mode |= MAC_MODE_HALF_DUPLEX;
                else {
                        lcl_adv = tg3_advert_flowctrl_1000T(
                                  tp->link_config.flowctrl);

                        if (phydev->pause)
                                rmt_adv = LPA_PAUSE_CAP;
                        if (phydev->asym_pause)
                                rmt_adv |= LPA_PAUSE_ASYM;
                }

                tg3_setup_flow_control(tp, lcl_adv, rmt_adv);
        } else
                mac_mode |= MAC_MODE_PORT_MODE_GMII;

        if (mac_mode != tp->mac_mode) {
                tp->mac_mode = mac_mode;
                tw32_f(MAC_MODE, tp->mac_mode);
                udelay(40);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {
                if (phydev->speed == SPEED_10)
                        tw32(MAC_MI_STAT,
                             MAC_MI_STAT_10MBPS_MODE |
                             MAC_MI_STAT_LNKSTAT_ATTN_ENAB);
                else
                        tw32(MAC_MI_STAT, MAC_MI_STAT_LNKSTAT_ATTN_ENAB);
        }

        if (phydev->speed == SPEED_1000 && phydev->duplex == DUPLEX_HALF)
                tw32(MAC_TX_LENGTHS,
                     ((2 << TX_LENGTHS_IPG_CRS_SHIFT) |
                      (6 << TX_LENGTHS_IPG_SHIFT) |
                      (0xff << TX_LENGTHS_SLOT_TIME_SHIFT)));
        else
                tw32(MAC_TX_LENGTHS,
                     ((2 << TX_LENGTHS_IPG_CRS_SHIFT) |
                      (6 << TX_LENGTHS_IPG_SHIFT) |
                      (32 << TX_LENGTHS_SLOT_TIME_SHIFT)));

        if ((phydev->link && tp->link_config.active_speed == SPEED_INVALID) ||
            (!phydev->link && tp->link_config.active_speed != SPEED_INVALID) ||
            phydev->speed != tp->link_config.active_speed ||
            phydev->duplex != tp->link_config.active_duplex ||
            oldflowctrl != tp->link_config.active_flowctrl)
            linkmesg = 1;

        tp->link_config.active_speed = phydev->speed;
        tp->link_config.active_duplex = phydev->duplex;

        spin_unlock(&tp->lock);

        if (linkmesg)
                tg3_link_report(tp);
}

static int tg3_phy_init(struct tg3 *tp)
{
        struct phy_device *phydev;

        if (tp->tg3_flags3 & TG3_FLG3_PHY_CONNECTED)
                return 0;

        /* Bring the PHY back to a known state. */
        tg3_bmcr_reset(tp);

        phydev = tp->mdio_bus->phy_map[PHY_ADDR];

        /* Attach the MAC to the PHY. */
        phydev = phy_connect(tp->dev, dev_name(&phydev->dev), tg3_adjust_link,
                             phydev->dev_flags, phydev->interface);
        if (IS_ERR(phydev)) {
                printk(KERN_ERR "%s: Could not attach to PHY\n", tp->dev->name);
                return PTR_ERR(phydev);
        }

        /* Mask with MAC supported features. */
        switch (phydev->interface) {
        case PHY_INTERFACE_MODE_GMII:
        case PHY_INTERFACE_MODE_RGMII:
                if (!(tp->tg3_flags & TG3_FLAG_10_100_ONLY)) {
                        phydev->supported &= (PHY_GBIT_FEATURES |
                                              SUPPORTED_Pause |
                                              SUPPORTED_Asym_Pause);
                        break;
                }
                /* fallthru */
        case PHY_INTERFACE_MODE_MII:
                phydev->supported &= (PHY_BASIC_FEATURES |
                                      SUPPORTED_Pause |
                                      SUPPORTED_Asym_Pause);
                break;
        default:
                phy_disconnect(tp->mdio_bus->phy_map[PHY_ADDR]);
                return -EINVAL;
        }

        tp->tg3_flags3 |= TG3_FLG3_PHY_CONNECTED;

        phydev->advertising = phydev->supported;

        return 0;
}

static void tg3_phy_start(struct tg3 *tp)
{
        struct phy_device *phydev;

        if (!(tp->tg3_flags3 & TG3_FLG3_PHY_CONNECTED))
                return;

        phydev = tp->mdio_bus->phy_map[PHY_ADDR];

        if (tp->link_config.phy_is_low_power) {
                tp->link_config.phy_is_low_power = 0;
                phydev->speed = tp->link_config.orig_speed;
                phydev->duplex = tp->link_config.orig_duplex;
                phydev->autoneg = tp->link_config.orig_autoneg;
                phydev->advertising = tp->link_config.orig_advertising;
        }

        phy_start(phydev);

        phy_start_aneg(phydev);
}

static void tg3_phy_stop(struct tg3 *tp)
{
        if (!(tp->tg3_flags3 & TG3_FLG3_PHY_CONNECTED))
                return;

        phy_stop(tp->mdio_bus->phy_map[PHY_ADDR]);
}

static void tg3_phy_fini(struct tg3 *tp)
{
        if (tp->tg3_flags3 & TG3_FLG3_PHY_CONNECTED) {
                phy_disconnect(tp->mdio_bus->phy_map[PHY_ADDR]);
                tp->tg3_flags3 &= ~TG3_FLG3_PHY_CONNECTED;
        }
}

static void tg3_phydsp_write(struct tg3 *tp, u32 reg, u32 val)
{
        tg3_writephy(tp, MII_TG3_DSP_ADDRESS, reg);
        tg3_writephy(tp, MII_TG3_DSP_RW_PORT, val);
}

static void tg3_phy_toggle_apd(struct tg3 *tp, bool enable)
{
        u32 reg;

        if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS) ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
                return;

        reg = MII_TG3_MISC_SHDW_WREN |
              MII_TG3_MISC_SHDW_SCR5_SEL |
              MII_TG3_MISC_SHDW_SCR5_LPED |
              MII_TG3_MISC_SHDW_SCR5_DLPTLM |
              MII_TG3_MISC_SHDW_SCR5_SDTL |
              MII_TG3_MISC_SHDW_SCR5_C125OE;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5784 || !enable)
                reg |= MII_TG3_MISC_SHDW_SCR5_DLLAPD;

        tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);


        reg = MII_TG3_MISC_SHDW_WREN |
              MII_TG3_MISC_SHDW_APD_SEL |
              MII_TG3_MISC_SHDW_APD_WKTM_84MS;
        if (enable)
                reg |= MII_TG3_MISC_SHDW_APD_ENABLE;

        tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);
}

static void tg3_phy_toggle_automdix(struct tg3 *tp, int enable)
{
        u32 phy;

        if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS) ||
            (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES))
                return;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                u32 ephy;

                if (!tg3_readphy(tp, MII_TG3_EPHY_TEST, &ephy)) {
                        tg3_writephy(tp, MII_TG3_EPHY_TEST,
                                     ephy | MII_TG3_EPHY_SHADOW_EN);
                        if (!tg3_readphy(tp, MII_TG3_EPHYTST_MISCCTRL, &phy)) {
                                if (enable)
                                        phy |= MII_TG3_EPHYTST_MISCCTRL_MDIX;
                                else
                                        phy &= ~MII_TG3_EPHYTST_MISCCTRL_MDIX;
                                tg3_writephy(tp, MII_TG3_EPHYTST_MISCCTRL, phy);
                        }
                        tg3_writephy(tp, MII_TG3_EPHY_TEST, ephy);
                }
        } else {
                phy = MII_TG3_AUXCTL_MISC_RDSEL_MISC |
                      MII_TG3_AUXCTL_SHDWSEL_MISC;
                if (!tg3_writephy(tp, MII_TG3_AUX_CTRL, phy) &&
                    !tg3_readphy(tp, MII_TG3_AUX_CTRL, &phy)) {
                        if (enable)
                                phy |= MII_TG3_AUXCTL_MISC_FORCE_AMDIX;
                        else
                                phy &= ~MII_TG3_AUXCTL_MISC_FORCE_AMDIX;
                        phy |= MII_TG3_AUXCTL_MISC_WREN;
                        tg3_writephy(tp, MII_TG3_AUX_CTRL, phy);
                }
        }
}

static void tg3_phy_set_wirespeed(struct tg3 *tp)
{
        u32 val;

        if (tp->tg3_flags2 & TG3_FLG2_NO_ETH_WIRE_SPEED)
                return;

        if (!tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x7007) &&
            !tg3_readphy(tp, MII_TG3_AUX_CTRL, &val))
                tg3_writephy(tp, MII_TG3_AUX_CTRL,
                             (val | (1 << 15) | (1 << 4)));
}

static void tg3_phy_apply_otp(struct tg3 *tp)
{
        u32 otp, phy;

        if (!tp->phy_otp)
                return;

        otp = tp->phy_otp;

        /* Enable SM_DSP clock and tx 6dB coding. */
        phy = MII_TG3_AUXCTL_SHDWSEL_AUXCTL |
              MII_TG3_AUXCTL_ACTL_SMDSP_ENA |
              MII_TG3_AUXCTL_ACTL_TX_6DB;
        tg3_writephy(tp, MII_TG3_AUX_CTRL, phy);

        phy = ((otp & TG3_OTP_AGCTGT_MASK) >> TG3_OTP_AGCTGT_SHIFT);
        phy |= MII_TG3_DSP_TAP1_AGCTGT_DFLT;
        tg3_phydsp_write(tp, MII_TG3_DSP_TAP1, phy);

        phy = ((otp & TG3_OTP_HPFFLTR_MASK) >> TG3_OTP_HPFFLTR_SHIFT) |
              ((otp & TG3_OTP_HPFOVER_MASK) >> TG3_OTP_HPFOVER_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_AADJ1CH0, phy);

        phy = ((otp & TG3_OTP_LPFDIS_MASK) >> TG3_OTP_LPFDIS_SHIFT);
        phy |= MII_TG3_DSP_AADJ1CH3_ADCCKADJ;
        tg3_phydsp_write(tp, MII_TG3_DSP_AADJ1CH3, phy);

        phy = ((otp & TG3_OTP_VDAC_MASK) >> TG3_OTP_VDAC_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_EXP75, phy);

        phy = ((otp & TG3_OTP_10BTAMP_MASK) >> TG3_OTP_10BTAMP_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_EXP96, phy);

        phy = ((otp & TG3_OTP_ROFF_MASK) >> TG3_OTP_ROFF_SHIFT) |
              ((otp & TG3_OTP_RCOFF_MASK) >> TG3_OTP_RCOFF_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_EXP97, phy);

        /* Turn off SM_DSP clock. */
        phy = MII_TG3_AUXCTL_SHDWSEL_AUXCTL |
              MII_TG3_AUXCTL_ACTL_TX_6DB;
        tg3_writephy(tp, MII_TG3_AUX_CTRL, phy);
}

static int tg3_wait_macro_done(struct tg3 *tp)
{
        int limit = 100;

        while (limit--) {
                u32 tmp32;

                if (!tg3_readphy(tp, 0x16, &tmp32)) {
                        if ((tmp32 & 0x1000) == 0)
                                break;
                }
        }
        if (limit < 0)
                return -EBUSY;

        return 0;
}

static int tg3_phy_write_and_check_testpat(struct tg3 *tp, int *resetp)
{
        static const u32 test_pat[4][6] = {
        { 0x00005555, 0x00000005, 0x00002aaa, 0x0000000a, 0x00003456, 0x00000003 },
        { 0x00002aaa, 0x0000000a, 0x00003333, 0x00000003, 0x0000789a, 0x00000005 },
        { 0x00005a5a, 0x00000005, 0x00002a6a, 0x0000000a, 0x00001bcd, 0x00000003 },
        { 0x00002a5a, 0x0000000a, 0x000033c3, 0x00000003, 0x00002ef1, 0x00000005 }
        };
        int chan;

        for (chan = 0; chan < 4; chan++) {
                int i;

                tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                             (chan * 0x2000) | 0x0200);
                tg3_writephy(tp, 0x16, 0x0002);

                for (i = 0; i < 6; i++)
                        tg3_writephy(tp, MII_TG3_DSP_RW_PORT,
                                     test_pat[chan][i]);

                tg3_writephy(tp, 0x16, 0x0202);
                if (tg3_wait_macro_done(tp)) {
                        *resetp = 1;
                        return -EBUSY;
                }

                tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                             (chan * 0x2000) | 0x0200);
                tg3_writephy(tp, 0x16, 0x0082);
                if (tg3_wait_macro_done(tp)) {
                        *resetp = 1;
                        return -EBUSY;
                }

                tg3_writephy(tp, 0x16, 0x0802);
                if (tg3_wait_macro_done(tp)) {
                        *resetp = 1;
                        return -EBUSY;
                }

                for (i = 0; i < 6; i += 2) {
                        u32 low, high;

                        if (tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &low) ||
                            tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &high) ||
                            tg3_wait_macro_done(tp)) {
                                *resetp = 1;
                                return -EBUSY;
                        }
                        low &= 0x7fff;
                        high &= 0x000f;
                        if (low != test_pat[chan][i] ||
                            high != test_pat[chan][i+1]) {
                                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x000b);
                                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x4001);
                                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x4005);

                                return -EBUSY;
                        }
                }
        }

        return 0;
}

static int tg3_phy_reset_chanpat(struct tg3 *tp)
{
        int chan;

        for (chan = 0; chan < 4; chan++) {
                int i;

                tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                             (chan * 0x2000) | 0x0200);
                tg3_writephy(tp, 0x16, 0x0002);
                for (i = 0; i < 6; i++)
                        tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x000);
                tg3_writephy(tp, 0x16, 0x0202);
                if (tg3_wait_macro_done(tp))
                        return -EBUSY;
        }

        return 0;
}

static int tg3_phy_reset_5703_4_5(struct tg3 *tp)
{
        u32 reg32, phy9_orig;
        int retries, do_phy_reset, err;

        retries = 10;
        do_phy_reset = 1;
        do {
                if (do_phy_reset) {
                        err = tg3_bmcr_reset(tp);
                        if (err)
                                return err;
                        do_phy_reset = 0;
                }

                /* Disable transmitter and interrupt.  */
                if (tg3_readphy(tp, MII_TG3_EXT_CTRL, &reg32))
                        continue;

                reg32 |= 0x3000;
                tg3_writephy(tp, MII_TG3_EXT_CTRL, reg32);

                /* Set full-duplex, 1000 mbps.  */
                tg3_writephy(tp, MII_BMCR,
                             BMCR_FULLDPLX | TG3_BMCR_SPEED1000);

                /* Set to master mode.  */
                if (tg3_readphy(tp, MII_TG3_CTRL, &phy9_orig))
                        continue;

                tg3_writephy(tp, MII_TG3_CTRL,
                             (MII_TG3_CTRL_AS_MASTER |
                              MII_TG3_CTRL_ENABLE_AS_MASTER));

                /* Enable SM_DSP_CLOCK and 6dB.  */
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0c00);

                /* Block the PHY control access.  */
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x8005);
                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x0800);

                err = tg3_phy_write_and_check_testpat(tp, &do_phy_reset);
                if (!err)
                        break;
        } while (--retries);

        err = tg3_phy_reset_chanpat(tp);
        if (err)
                return err;

        tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x8005);
        tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x0000);

        tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x8200);
        tg3_writephy(tp, 0x16, 0x0000);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
                /* Set Extended packet length bit for jumbo frames */
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x4400);
        }
        else {
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0400);
        }

        tg3_writephy(tp, MII_TG3_CTRL, phy9_orig);

        if (!tg3_readphy(tp, MII_TG3_EXT_CTRL, &reg32)) {
                reg32 &= ~0x3000;
                tg3_writephy(tp, MII_TG3_EXT_CTRL, reg32);
        } else if (!err)
                err = -EBUSY;

        return err;
}

/* This will reset the tigon3 PHY if there is no valid
 * link unless the FORCE argument is non-zero.
 */
static int tg3_phy_reset(struct tg3 *tp)
{
        u32 cpmuctrl;
        u32 phy_status;
        int err;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                u32 val;

                val = tr32(GRC_MISC_CFG);
                tw32_f(GRC_MISC_CFG, val & ~GRC_MISC_CFG_EPHY_IDDQ);
                udelay(40);
        }
        err  = tg3_readphy(tp, MII_BMSR, &phy_status);
        err |= tg3_readphy(tp, MII_BMSR, &phy_status);
        if (err != 0)
                return -EBUSY;

        if (netif_running(tp->dev) && netif_carrier_ok(tp->dev)) {
                netif_carrier_off(tp->dev);
                tg3_link_report(tp);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
                err = tg3_phy_reset_5703_4_5(tp);
                if (err)
                        return err;
                goto out;
        }

        cpmuctrl = 0;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
            GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX) {
                cpmuctrl = tr32(TG3_CPMU_CTRL);
                if (cpmuctrl & CPMU_CTRL_GPHY_10MB_RXONLY)
                        tw32(TG3_CPMU_CTRL,
                             cpmuctrl & ~CPMU_CTRL_GPHY_10MB_RXONLY);
        }

        err = tg3_bmcr_reset(tp);
        if (err)
                return err;

        if (cpmuctrl & CPMU_CTRL_GPHY_10MB_RXONLY) {
                u32 phy;

                phy = MII_TG3_DSP_EXP8_AEDW | MII_TG3_DSP_EXP8_REJ2MHz;
                tg3_phydsp_write(tp, MII_TG3_DSP_EXP8, phy);

                tw32(TG3_CPMU_CTRL, cpmuctrl);
        }

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5784_AX ||
            GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5761_AX) {
                u32 val;

                val = tr32(TG3_CPMU_LSPD_1000MB_CLK);
                if ((val & CPMU_LSPD_1000MB_MACCLK_MASK) ==
                    CPMU_LSPD_1000MB_MACCLK_12_5) {
                        val &= ~CPMU_LSPD_1000MB_MACCLK_MASK;
                        udelay(40);
                        tw32_f(TG3_CPMU_LSPD_1000MB_CLK, val);
                }
        }

        tg3_phy_apply_otp(tp);

        if (tp->tg3_flags3 & TG3_FLG3_PHY_ENABLE_APD)
                tg3_phy_toggle_apd(tp, true);
        else
                tg3_phy_toggle_apd(tp, false);

out:
        if (tp->tg3_flags2 & TG3_FLG2_PHY_ADC_BUG) {
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0c00);
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x201f);
                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x2aaa);
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x000a);
                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x0323);
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0400);
        }
        if (tp->tg3_flags2 & TG3_FLG2_PHY_5704_A0_BUG) {
                tg3_writephy(tp, 0x1c, 0x8d68);
                tg3_writephy(tp, 0x1c, 0x8d68);
        }
        if (tp->tg3_flags2 & TG3_FLG2_PHY_BER_BUG) {
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0c00);
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x000a);
                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x310b);
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x201f);
                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x9506);
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x401f);
                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x14e2);
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0400);
        }
        else if (tp->tg3_flags2 & TG3_FLG2_PHY_JITTER_BUG) {
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0c00);
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x000a);
                if (tp->tg3_flags2 & TG3_FLG2_PHY_ADJUST_TRIM) {
                        tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x110b);
                        tg3_writephy(tp, MII_TG3_TEST1,
                                     MII_TG3_TEST1_TRIM_EN | 0x4);
                } else
                        tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x010b);
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0400);
        }
        /* Set Extended packet length bit (bit 14) on all chips that */
        /* support jumbo frames */
        if ((tp->phy_id & PHY_ID_MASK) == PHY_ID_BCM5401) {
                /* Cannot do read-modify-write on 5401 */
                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x4c20);
        } else if (tp->tg3_flags2 & TG3_FLG2_JUMBO_CAPABLE) {
                u32 phy_reg;

                /* Set bit 14 with read-modify-write to preserve other bits */
                if (!tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0007) &&
                    !tg3_readphy(tp, MII_TG3_AUX_CTRL, &phy_reg))
                        tg3_writephy(tp, MII_TG3_AUX_CTRL, phy_reg | 0x4000);
        }

        /* Set phy register 0x10 bit 0 to high fifo elasticity to support
         * jumbo frames transmission.
         */
        if (tp->tg3_flags2 & TG3_FLG2_JUMBO_CAPABLE) {
                u32 phy_reg;

                if (!tg3_readphy(tp, MII_TG3_EXT_CTRL, &phy_reg))
                    tg3_writephy(tp, MII_TG3_EXT_CTRL,
                                 phy_reg | MII_TG3_EXT_CTRL_FIFO_ELASTIC);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                /* adjust output voltage */
                tg3_writephy(tp, MII_TG3_EPHY_PTEST, 0x12);
        }

        tg3_phy_toggle_automdix(tp, 1);
        tg3_phy_set_wirespeed(tp);
        return 0;
}

static void tg3_frob_aux_power(struct tg3 *tp)
{
        struct tg3 *tp_peer = tp;

        if ((tp->tg3_flags2 & TG3_FLG2_IS_NIC) == 0)
                return;

        if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) ||
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714)) {
                struct net_device *dev_peer;

                dev_peer = pci_get_drvdata(tp->pdev_peer);
                /* remove_one() may have been run on the peer. */
                if (!dev_peer)
                        tp_peer = tp;
                else
                        tp_peer = netdev_priv(dev_peer);
        }

        if ((tp->tg3_flags & TG3_FLAG_WOL_ENABLE) != 0 ||
            (tp->tg3_flags & TG3_FLAG_ENABLE_ASF) != 0 ||
            (tp_peer->tg3_flags & TG3_FLAG_WOL_ENABLE) != 0 ||
            (tp_peer->tg3_flags & TG3_FLAG_ENABLE_ASF) != 0) {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                    (GRC_LCLCTRL_GPIO_OE0 |
                                     GRC_LCLCTRL_GPIO_OE1 |
                                     GRC_LCLCTRL_GPIO_OE2 |
                                     GRC_LCLCTRL_GPIO_OUTPUT0 |
                                     GRC_LCLCTRL_GPIO_OUTPUT1),
                                    100);
                } else if (tp->pdev->device == PCI_DEVICE_ID_TIGON3_5761 ||
                           tp->pdev->device == TG3PCI_DEVICE_TIGON3_5761S) {
                        /* The 5761 non-e device swaps GPIO 0 and GPIO 2. */
                        u32 grc_local_ctrl = GRC_LCLCTRL_GPIO_OE0 |
                                             GRC_LCLCTRL_GPIO_OE1 |
                                             GRC_LCLCTRL_GPIO_OE2 |
                                             GRC_LCLCTRL_GPIO_OUTPUT0 |
                                             GRC_LCLCTRL_GPIO_OUTPUT1 |
                                             tp->grc_local_ctrl;
                        tw32_wait_f(GRC_LOCAL_CTRL, grc_local_ctrl, 100);

                        grc_local_ctrl |= GRC_LCLCTRL_GPIO_OUTPUT2;
                        tw32_wait_f(GRC_LOCAL_CTRL, grc_local_ctrl, 100);

                        grc_local_ctrl &= ~GRC_LCLCTRL_GPIO_OUTPUT0;
                        tw32_wait_f(GRC_LOCAL_CTRL, grc_local_ctrl, 100);
                } else {
                        u32 no_gpio2;
                        u32 grc_local_ctrl = 0;

                        if (tp_peer != tp &&
                            (tp_peer->tg3_flags & TG3_FLAG_INIT_COMPLETE) != 0)
                                return;

                        /* Workaround to prevent overdrawing Amps. */
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
                            ASIC_REV_5714) {
                                grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE3;
                                tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                            grc_local_ctrl, 100);
                        }

                        /* On 5753 and variants, GPIO2 cannot be used. */
                        no_gpio2 = tp->nic_sram_data_cfg &
                                    NIC_SRAM_DATA_CFG_NO_GPIO2;

                        grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE0 |
                                         GRC_LCLCTRL_GPIO_OE1 |
                                         GRC_LCLCTRL_GPIO_OE2 |
                                         GRC_LCLCTRL_GPIO_OUTPUT1 |
                                         GRC_LCLCTRL_GPIO_OUTPUT2;
                        if (no_gpio2) {
                                grc_local_ctrl &= ~(GRC_LCLCTRL_GPIO_OE2 |
                                                    GRC_LCLCTRL_GPIO_OUTPUT2);
                        }
                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                                    grc_local_ctrl, 100);

                        grc_local_ctrl |= GRC_LCLCTRL_GPIO_OUTPUT0;

                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                                    grc_local_ctrl, 100);

                        if (!no_gpio2) {
                                grc_local_ctrl &= ~GRC_LCLCTRL_GPIO_OUTPUT2;
                                tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                            grc_local_ctrl, 100);
                        }
                }
        } else {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
                    GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701) {
                        if (tp_peer != tp &&
                            (tp_peer->tg3_flags & TG3_FLAG_INIT_COMPLETE) != 0)
                                return;

                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                    (GRC_LCLCTRL_GPIO_OE1 |
                                     GRC_LCLCTRL_GPIO_OUTPUT1), 100);

                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                    GRC_LCLCTRL_GPIO_OE1, 100);

                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                    (GRC_LCLCTRL_GPIO_OE1 |
                                     GRC_LCLCTRL_GPIO_OUTPUT1), 100);
                }
        }
}

static int tg3_5700_link_polarity(struct tg3 *tp, u32 speed)
{
        if (tp->led_ctrl == LED_CTRL_MODE_PHY_2)
                return 1;
        else if ((tp->phy_id & PHY_ID_MASK) == PHY_ID_BCM5411) {
                if (speed != SPEED_10)
                        return 1;
        } else if (speed == SPEED_10)
                return 1;

        return 0;
}

static int tg3_setup_phy(struct tg3 *, int);

#define RESET_KIND_SHUTDOWN     0
#define RESET_KIND_INIT         1
#define RESET_KIND_SUSPEND      2

static void tg3_write_sig_post_reset(struct tg3 *, int);
static int tg3_halt_cpu(struct tg3 *, u32);

static void tg3_power_down_phy(struct tg3 *tp, bool do_low_power)
{
        u32 val;

        if (tp->tg3_flags2 & TG3_FLG2_PHY_SERDES) {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
                        u32 sg_dig_ctrl = tr32(SG_DIG_CTRL);
                        u32 serdes_cfg = tr32(MAC_SERDES_CFG);

                        sg_dig_ctrl |=
                                SG_DIG_USING_HW_AUTONEG | SG_DIG_SOFT_RESET;
                        tw32(SG_DIG_CTRL, sg_dig_ctrl);
                        tw32(MAC_SERDES_CFG, serdes_cfg | (1 << 15));
                }
                return;
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                tg3_bmcr_reset(tp);
                val = tr32(GRC_MISC_CFG);
                tw32_f(GRC_MISC_CFG, val | GRC_MISC_CFG_EPHY_IDDQ);
                udelay(40);
                return;
        } else if (do_low_power) {
                tg3_writephy(tp, MII_TG3_EXT_CTRL,
                             MII_TG3_EXT_CTRL_FORCE_LED_OFF);

                tg3_writephy(tp, MII_TG3_AUX_CTRL,
                             MII_TG3_AUXCTL_SHDWSEL_PWRCTL |
                             MII_TG3_AUXCTL_PCTL_100TX_LPWR |
                             MII_TG3_AUXCTL_PCTL_SPR_ISOLATE |
                             MII_TG3_AUXCTL_PCTL_VREG_11V);
        }

        /* The PHY should not be powered down on some chips because
         * of bugs.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780 &&
             (tp->tg3_flags2 & TG3_FLG2_MII_SERDES)))
                return;

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5784_AX ||
            GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5761_AX) {
                val = tr32(TG3_CPMU_LSPD_1000MB_CLK);
                val &= ~CPMU_LSPD_1000MB_MACCLK_MASK;
                val |= CPMU_LSPD_1000MB_MACCLK_12_5;
                tw32_f(TG3_CPMU_LSPD_1000MB_CLK, val);
        }

        tg3_writephy(tp, MII_BMCR, BMCR_PDOWN);
}

/* tp->lock is held. */
static int tg3_nvram_lock(struct tg3 *tp)
{
        if (tp->tg3_flags & TG3_FLAG_NVRAM) {
                int i;

                if (tp->nvram_lock_cnt == 0) {
                        tw32(NVRAM_SWARB, SWARB_REQ_SET1);
                        for (i = 0; i < 8000; i++) {
                                if (tr32(NVRAM_SWARB) & SWARB_GNT1)
                                        break;
                                udelay(20);
                        }
                        if (i == 8000) {
                                tw32(NVRAM_SWARB, SWARB_REQ_CLR1);
                                return -ENODEV;
                        }
                }
                tp->nvram_lock_cnt++;
        }
        return 0;
}

/* tp->lock is held. */
static void tg3_nvram_unlock(struct tg3 *tp)
{
        if (tp->tg3_flags & TG3_FLAG_NVRAM) {
                if (tp->nvram_lock_cnt > 0)
                        tp->nvram_lock_cnt--;
                if (tp->nvram_lock_cnt == 0)
                        tw32_f(NVRAM_SWARB, SWARB_REQ_CLR1);
        }
}

/* tp->lock is held. */
static void tg3_enable_nvram_access(struct tg3 *tp)
{
        if ((tp->tg3_flags2 & TG3_FLG2_5750_PLUS) &&
            !(tp->tg3_flags2 & TG3_FLG2_PROTECTED_NVRAM)) {
                u32 nvaccess = tr32(NVRAM_ACCESS);

                tw32(NVRAM_ACCESS, nvaccess | ACCESS_ENABLE);
        }
}

/* tp->lock is held. */
static void tg3_disable_nvram_access(struct tg3 *tp)
{
        if ((tp->tg3_flags2 & TG3_FLG2_5750_PLUS) &&
            !(tp->tg3_flags2 & TG3_FLG2_PROTECTED_NVRAM)) {
                u32 nvaccess = tr32(NVRAM_ACCESS);

                tw32(NVRAM_ACCESS, nvaccess & ~ACCESS_ENABLE);
        }
}

static int tg3_nvram_read_using_eeprom(struct tg3 *tp,
                                        u32 offset, u32 *val)
{
        u32 tmp;
        int i;

        if (offset > EEPROM_ADDR_ADDR_MASK || (offset % 4) != 0)
                return -EINVAL;

        tmp = tr32(GRC_EEPROM_ADDR) & ~(EEPROM_ADDR_ADDR_MASK |
                                        EEPROM_ADDR_DEVID_MASK |
                                        EEPROM_ADDR_READ);
        tw32(GRC_EEPROM_ADDR,
             tmp |
             (0 << EEPROM_ADDR_DEVID_SHIFT) |
             ((offset << EEPROM_ADDR_ADDR_SHIFT) &
              EEPROM_ADDR_ADDR_MASK) |
             EEPROM_ADDR_READ | EEPROM_ADDR_START);

        for (i = 0; i < 1000; i++) {
                tmp = tr32(GRC_EEPROM_ADDR);

                if (tmp & EEPROM_ADDR_COMPLETE)
                        break;
                msleep(1);
        }
        if (!(tmp & EEPROM_ADDR_COMPLETE))
                return -EBUSY;

        tmp = tr32(GRC_EEPROM_DATA);

        /*
         * The data will always be opposite the native endian
         * format.  Perform a blind byteswap to compensate.
         */
        *val = swab32(tmp);

        return 0;
}

#define NVRAM_CMD_TIMEOUT 10000

static int tg3_nvram_exec_cmd(struct tg3 *tp, u32 nvram_cmd)
{
        int i;

        tw32(NVRAM_CMD, nvram_cmd);
        for (i = 0; i < NVRAM_CMD_TIMEOUT; i++) {
                udelay(10);
                if (tr32(NVRAM_CMD) & NVRAM_CMD_DONE) {
                        udelay(10);
                        break;
                }
        }

        if (i == NVRAM_CMD_TIMEOUT)
                return -EBUSY;

        return 0;
}

static u32 tg3_nvram_phys_addr(struct tg3 *tp, u32 addr)
{
        if ((tp->tg3_flags & TG3_FLAG_NVRAM) &&
            (tp->tg3_flags & TG3_FLAG_NVRAM_BUFFERED) &&
            (tp->tg3_flags2 & TG3_FLG2_FLASH) &&
           !(tp->tg3_flags3 & TG3_FLG3_NO_NVRAM_ADDR_TRANS) &&
            (tp->nvram_jedecnum == JEDEC_ATMEL))

                addr = ((addr / tp->nvram_pagesize) <<
                        ATMEL_AT45DB0X1B_PAGE_POS) +
                       (addr % tp->nvram_pagesize);

        return addr;
}

static u32 tg3_nvram_logical_addr(struct tg3 *tp, u32 addr)
{
        if ((tp->tg3_flags & TG3_FLAG_NVRAM) &&
            (tp->tg3_flags & TG3_FLAG_NVRAM_BUFFERED) &&
            (tp->tg3_flags2 & TG3_FLG2_FLASH) &&
           !(tp->tg3_flags3 & TG3_FLG3_NO_NVRAM_ADDR_TRANS) &&
            (tp->nvram_jedecnum == JEDEC_ATMEL))

                addr = ((addr >> ATMEL_AT45DB0X1B_PAGE_POS) *
                        tp->nvram_pagesize) +
                       (addr & ((1 << ATMEL_AT45DB0X1B_PAGE_POS) - 1));

        return addr;
}

/* NOTE: Data read in from NVRAM is byteswapped according to
 * the byteswapping settings for all other register accesses.
 * tg3 devices are BE devices, so on a BE machine, the data
 * returned will be exactly as it is seen in NVRAM.  On a LE
 * machine, the 32-bit value will be byteswapped.
 */
static int tg3_nvram_read(struct tg3 *tp, u32 offset, u32 *val)
{
        int ret;

        if (!(tp->tg3_flags & TG3_FLAG_NVRAM))
                return tg3_nvram_read_using_eeprom(tp, offset, val);

        offset = tg3_nvram_phys_addr(tp, offset);

        if (offset > NVRAM_ADDR_MSK)
                return -EINVAL;

        ret = tg3_nvram_lock(tp);
        if (ret)
                return ret;

        tg3_enable_nvram_access(tp);

        tw32(NVRAM_ADDR, offset);
        ret = tg3_nvram_exec_cmd(tp, NVRAM_CMD_RD | NVRAM_CMD_GO |
                NVRAM_CMD_FIRST | NVRAM_CMD_LAST | NVRAM_CMD_DONE);

        if (ret == 0)
                *val = tr32(NVRAM_RDDATA);

        tg3_disable_nvram_access(tp);

        tg3_nvram_unlock(tp);

        return ret;
}

/* Ensures NVRAM data is in bytestream format. */
static int tg3_nvram_read_be32(struct tg3 *tp, u32 offset, __be32 *val)
{
        u32 v;
        int res = tg3_nvram_read(tp, offset, &v);
        if (!res)
                *val = cpu_to_be32(v);
        return res;
}

/* tp->lock is held. */
static void __tg3_set_mac_addr(struct tg3 *tp, int skip_mac_1)
{
        u32 addr_high, addr_low;
        int i;

        addr_high = ((tp->dev->dev_addr[0] << 8) |
                     tp->dev->dev_addr[1]);
        addr_low = ((tp->dev->dev_addr[2] << 24) |
                    (tp->dev->dev_addr[3] << 16) |
                    (tp->dev->dev_addr[4] <<  8) |
                    (tp->dev->dev_addr[5] <<  0));
        for (i = 0; i < 4; i++) {
                if (i == 1 && skip_mac_1)
                        continue;
                tw32(MAC_ADDR_0_HIGH + (i * 8), addr_high);
                tw32(MAC_ADDR_0_LOW + (i * 8), addr_low);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
                for (i = 0; i < 12; i++) {
                        tw32(MAC_EXTADDR_0_HIGH + (i * 8), addr_high);
                        tw32(MAC_EXTADDR_0_LOW + (i * 8), addr_low);
                }
        }

        addr_high = (tp->dev->dev_addr[0] +
                     tp->dev->dev_addr[1] +
                     tp->dev->dev_addr[2] +
                     tp->dev->dev_addr[3] +
                     tp->dev->dev_addr[4] +
                     tp->dev->dev_addr[5]) &
                TX_BACKOFF_SEED_MASK;
        tw32(MAC_TX_BACKOFF_SEED, addr_high);
}

static int tg3_set_power_state(struct tg3 *tp, pci_power_t state)
{
        u32 misc_host_ctrl;
        bool device_should_wake, do_low_power;

        /* Make sure register accesses (indirect or otherwise)
         * will function correctly.
         */
        pci_write_config_dword(tp->pdev,
                               TG3PCI_MISC_HOST_CTRL,
                               tp->misc_host_ctrl);

        switch (state) {
        case PCI_D0:
                pci_enable_wake(tp->pdev, state, false);
                pci_set_power_state(tp->pdev, PCI_D0);

                /* Switch out of Vaux if it is a NIC */
                if (tp->tg3_flags2 & TG3_FLG2_IS_NIC)
                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl, 100);

                return 0;

        case PCI_D1:
        case PCI_D2:
        case PCI_D3hot:
                break;

        default:
                printk(KERN_ERR PFX "%s: Invalid power state (D%d) requested\n",
                        tp->dev->name, state);
                return -EINVAL;
        }

        /* Restore the CLKREQ setting. */
        if (tp->tg3_flags3 & TG3_FLG3_CLKREQ_BUG) {
                u16 lnkctl;

                pci_read_config_word(tp->pdev,
                                     tp->pcie_cap + PCI_EXP_LNKCTL,
                                     &lnkctl);
                lnkctl |= PCI_EXP_LNKCTL_CLKREQ_EN;
                pci_write_config_word(tp->pdev,
                                      tp->pcie_cap + PCI_EXP_LNKCTL,
                                      lnkctl);
        }

        misc_host_ctrl = tr32(TG3PCI_MISC_HOST_CTRL);
        tw32(TG3PCI_MISC_HOST_CTRL,
             misc_host_ctrl | MISC_HOST_CTRL_MASK_PCI_INT);

        device_should_wake = pci_pme_capable(tp->pdev, state) &&
                             device_may_wakeup(&tp->pdev->dev) &&
                             (tp->tg3_flags & TG3_FLAG_WOL_ENABLE);

        if (tp->tg3_flags3 & TG3_FLG3_USE_PHYLIB) {
                do_low_power = false;
                if ((tp->tg3_flags3 & TG3_FLG3_PHY_CONNECTED) &&
                    !tp->link_config.phy_is_low_power) {
                        struct phy_device *phydev;
                        u32 phyid, advertising;

                        phydev = tp->mdio_bus->phy_map[PHY_ADDR];

                        tp->link_config.phy_is_low_power = 1;

                        tp->link_config.orig_speed = phydev->speed;
                        tp->link_config.orig_duplex = phydev->duplex;
                        tp->link_config.orig_autoneg = phydev->autoneg;
                        tp->link_config.orig_advertising = phydev->advertising;

                        advertising = ADVERTISED_TP |
                                      ADVERTISED_Pause |
                                      ADVERTISED_Autoneg |
                                      ADVERTISED_10baseT_Half;

                        if ((tp->tg3_flags & TG3_FLAG_ENABLE_ASF) ||
                            device_should_wake) {
                                if (tp->tg3_flags & TG3_FLAG_WOL_SPEED_100MB)
                                        advertising |=
                                                ADVERTISED_100baseT_Half |
                                                ADVERTISED_100baseT_Full |
                                                ADVERTISED_10baseT_Full;
                                else
                                        advertising |= ADVERTISED_10baseT_Full;
                        }

                        phydev->advertising = advertising;

                        phy_start_aneg(phydev);

                        phyid = phydev->drv->phy_id & phydev->drv->phy_id_mask;
                        if (phyid != TG3_PHY_ID_BCMAC131) {
                                phyid &= TG3_PHY_OUI_MASK;
                                if (phyid == TG3_PHY_OUI_1 ||
                                    phyid == TG3_PHY_OUI_2 ||
                                    phyid == TG3_PHY_OUI_3)
                                        do_low_power = true;
                        }
                }
        } else {
                do_low_power = true;

                if (tp->link_config.phy_is_low_power == 0) {
                        tp->link_config.phy_is_low_power = 1;
                        tp->link_config.orig_speed = tp->link_config.speed;
                        tp->link_config.orig_duplex = tp->link_config.duplex;
                        tp->link_config.orig_autoneg = tp->link_config.autoneg;
                }

                if (!(tp->tg3_flags2 & TG3_FLG2_ANY_SERDES)) {
                        tp->link_config.speed = SPEED_10;
                        tp->link_config.duplex = DUPLEX_HALF;
                        tp->link_config.autoneg = AUTONEG_ENABLE;
                        tg3_setup_phy(tp, 0);
                }
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                u32 val;

                val = tr32(GRC_VCPU_EXT_CTRL);
                tw32(GRC_VCPU_EXT_CTRL, val | GRC_VCPU_EXT_CTRL_DISABLE_WOL);
        } else if (!(tp->tg3_flags & TG3_FLAG_ENABLE_ASF)) {
                int i;
                u32 val;

                for (i = 0; i < 200; i++) {
                        tg3_read_mem(tp, NIC_SRAM_FW_ASF_STATUS_MBOX, &val);
                        if (val == ~NIC_SRAM_FIRMWARE_MBOX_MAGIC1)
                                break;
                        msleep(1);
                }
        }
        if (tp->tg3_flags & TG3_FLAG_WOL_CAP)
                tg3_write_mem(tp, NIC_SRAM_WOL_MBOX, WOL_SIGNATURE |
                                                     WOL_DRV_STATE_SHUTDOWN |
                                                     WOL_DRV_WOL |
                                                     WOL_SET_MAGIC_PKT);

        if (device_should_wake) {
                u32 mac_mode;

                if (!(tp->tg3_flags2 & TG3_FLG2_PHY_SERDES)) {
                        if (do_low_power) {
                                tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x5a);
                                udelay(40);
                        }

                        if (tp->tg3_flags2 & TG3_FLG2_MII_SERDES)
                                mac_mode = MAC_MODE_PORT_MODE_GMII;
                        else
                                mac_mode = MAC_MODE_PORT_MODE_MII;

                        mac_mode |= tp->mac_mode & MAC_MODE_LINK_POLARITY;
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
                            ASIC_REV_5700) {
                                u32 speed = (tp->tg3_flags &
                                             TG3_FLAG_WOL_SPEED_100MB) ?
                                             SPEED_100 : SPEED_10;
                                if (tg3_5700_link_polarity(tp, speed))
                                        mac_mode |= MAC_MODE_LINK_POLARITY;
                                else
                                        mac_mode &= ~MAC_MODE_LINK_POLARITY;
                        }
                } else {
                        mac_mode = MAC_MODE_PORT_MODE_TBI;
                }

                if (!(tp->tg3_flags2 & TG3_FLG2_5750_PLUS))
                        tw32(MAC_LED_CTRL, tp->led_ctrl);

                mac_mode |= MAC_MODE_MAGIC_PKT_ENABLE;
                if (((tp->tg3_flags2 & TG3_FLG2_5705_PLUS) &&
                    !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) &&
                    ((tp->tg3_flags & TG3_FLAG_ENABLE_ASF) ||
                     (tp->tg3_flags3 & TG3_FLG3_ENABLE_APE)))
                        mac_mode |= MAC_MODE_KEEP_FRAME_IN_WOL;

                if (tp->tg3_flags3 & TG3_FLG3_ENABLE_APE) {
                        mac_mode |= tp->mac_mode &
                                    (MAC_MODE_APE_TX_EN | MAC_MODE_APE_RX_EN);
                        if (mac_mode & MAC_MODE_APE_TX_EN)
                                mac_mode |= MAC_MODE_TDE_ENABLE;
                }

                tw32_f(MAC_MODE, mac_mode);
                udelay(100);

                tw32_f(MAC_RX_MODE, RX_MODE_ENABLE);
                udelay(10);
        }

        if (!(tp->tg3_flags & TG3_FLAG_WOL_SPEED_100MB) &&
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)) {
                u32 base_val;

                base_val = tp->pci_clock_ctrl;
                base_val |= (CLOCK_CTRL_RXCLK_DISABLE |
                             CLOCK_CTRL_TXCLK_DISABLE);

                tw32_wait_f(TG3PCI_CLOCK_CTRL, base_val | CLOCK_CTRL_ALTCLK |
                            CLOCK_CTRL_PWRDOWN_PLL133, 40);
        } else if ((tp->tg3_flags2 & TG3_FLG2_5780_CLASS) ||
                   (tp->tg3_flags & TG3_FLAG_CPMU_PRESENT) ||
                   (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)) {
                /* do nothing */
        } else if (!((tp->tg3_flags2 & TG3_FLG2_5750_PLUS) &&
                     (tp->tg3_flags & TG3_FLAG_ENABLE_ASF))) {
                u32 newbits1, newbits2;

                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                        newbits1 = (CLOCK_CTRL_RXCLK_DISABLE |
                                    CLOCK_CTRL_TXCLK_DISABLE |
                                    CLOCK_CTRL_ALTCLK);
                        newbits2 = newbits1 | CLOCK_CTRL_44MHZ_CORE;
                } else if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS) {
                        newbits1 = CLOCK_CTRL_625_CORE;
                        newbits2 = newbits1 | CLOCK_CTRL_ALTCLK;
                } else {
                        newbits1 = CLOCK_CTRL_ALTCLK;
                        newbits2 = newbits1 | CLOCK_CTRL_44MHZ_CORE;
                }

                tw32_wait_f(TG3PCI_CLOCK_CTRL, tp->pci_clock_ctrl | newbits1,
                            40);

                tw32_wait_f(TG3PCI_CLOCK_CTRL, tp->pci_clock_ctrl | newbits2,
                            40);

                if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
                        u32 newbits3;

                        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
                            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                                newbits3 = (CLOCK_CTRL_RXCLK_DISABLE |
                                            CLOCK_CTRL_TXCLK_DISABLE |
                                            CLOCK_CTRL_44MHZ_CORE);
                        } else {
                                newbits3 = CLOCK_CTRL_44MHZ_CORE;
                        }

                        tw32_wait_f(TG3PCI_CLOCK_CTRL,
                                    tp->pci_clock_ctrl | newbits3, 40);
                }
        }

        if (!(device_should_wake) &&
            !(tp->tg3_flags & TG3_FLAG_ENABLE_ASF))
                tg3_power_down_phy(tp, do_low_power);

        tg3_frob_aux_power(tp);

        /* Workaround for unstable PLL clock */
        if ((GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX) ||
            (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_BX)) {
                u32 val = tr32(0x7d00);

                val &= ~((1 << 16) | (1 << 4) | (1 << 2) | (1 << 1) | 1);
                tw32(0x7d00, val);
                if (!(tp->tg3_flags & TG3_FLAG_ENABLE_ASF)) {
                        int err;

                        err = tg3_nvram_lock(tp);
                        tg3_halt_cpu(tp, RX_CPU_BASE);
                        if (!err)
                                tg3_nvram_unlock(tp);
                }
        }

        tg3_write_sig_post_reset(tp, RESET_KIND_SHUTDOWN);

        if (device_should_wake)
                pci_enable_wake(tp->pdev, state, true);

        /* Finally, set the new power state. */
        pci_set_power_state(tp->pdev, state);

        return 0;
}

static void tg3_aux_stat_to_speed_duplex(struct tg3 *tp, u32 val, u16 *speed, u8 *duplex)
{
        switch (val & MII_TG3_AUX_STAT_SPDMASK) {
        case MII_TG3_AUX_STAT_10HALF:
                *speed = SPEED_10;
                *duplex = DUPLEX_HALF;
                break;

        case MII_TG3_AUX_STAT_10FULL:
                *speed = SPEED_10;
                *duplex = DUPLEX_FULL;
                break;

        case MII_TG3_AUX_STAT_100HALF:
                *speed = SPEED_100;
                *duplex = DUPLEX_HALF;
                break;

        case MII_TG3_AUX_STAT_100FULL:
                *speed = SPEED_100;
                *duplex = DUPLEX_FULL;
                break;

        case MII_TG3_AUX_STAT_1000HALF:
                *speed = SPEED_1000;
                *duplex = DUPLEX_HALF;
                break;

        case MII_TG3_AUX_STAT_1000FULL:
                *speed = SPEED_1000;
                *duplex = DUPLEX_FULL;
                break;

        default:
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                        *speed = (val & MII_TG3_AUX_STAT_100) ? SPEED_100 :
                                 SPEED_10;
                        *duplex = (val & MII_TG3_AUX_STAT_FULL) ? DUPLEX_FULL :
                                  DUPLEX_HALF;
                        break;
                }
                *speed = SPEED_INVALID;
                *duplex = DUPLEX_INVALID;
                break;
        }
}

static void tg3_phy_copper_begin(struct tg3 *tp)
{
        u32 new_adv;
        int i;

        if (tp->link_config.phy_is_low_power) {
                /* Entering low power mode.  Disable gigabit and
                 * 100baseT advertisements.
                 */
                tg3_writephy(tp, MII_TG3_CTRL, 0);

                new_adv = (ADVERTISE_10HALF | ADVERTISE_10FULL |
                           ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
                if (tp->tg3_flags & TG3_FLAG_WOL_SPEED_100MB)
                        new_adv |= (ADVERTISE_100HALF | ADVERTISE_100FULL);

                tg3_writephy(tp, MII_ADVERTISE, new_adv);
        } else if (tp->link_config.speed == SPEED_INVALID) {
                if (tp->tg3_flags & TG3_FLAG_10_100_ONLY)
                        tp->link_config.advertising &=
                                ~(ADVERTISED_1000baseT_Half |
                                  ADVERTISED_1000baseT_Full);

                new_adv = ADVERTISE_CSMA;
                if (tp->link_config.advertising & ADVERTISED_10baseT_Half)
                        new_adv |= ADVERTISE_10HALF;
                if (tp->link_config.advertising & ADVERTISED_10baseT_Full)
                        new_adv |= ADVERTISE_10FULL;
                if (tp->link_config.advertising & ADVERTISED_100baseT_Half)
                        new_adv |= ADVERTISE_100HALF;
                if (tp->link_config.advertising & ADVERTISED_100baseT_Full)
                        new_adv |= ADVERTISE_100FULL;

                new_adv |= tg3_advert_flowctrl_1000T(tp->link_config.flowctrl);

                tg3_writephy(tp, MII_ADVERTISE, new_adv);

                if (tp->link_config.advertising &
                    (ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full)) {
                        new_adv = 0;
                        if (tp->link_config.advertising & ADVERTISED_1000baseT_Half)
                                new_adv |= MII_TG3_CTRL_ADV_1000_HALF;
                        if (tp->link_config.advertising & ADVERTISED_1000baseT_Full)
                                new_adv |= MII_TG3_CTRL_ADV_1000_FULL;
                        if (!(tp->tg3_flags & TG3_FLAG_10_100_ONLY) &&
                            (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0 ||
                             tp->pci_chip_rev_id == CHIPREV_ID_5701_B0))
                                new_adv |= (MII_TG3_CTRL_AS_MASTER |
                                            MII_TG3_CTRL_ENABLE_AS_MASTER);
                        tg3_writephy(tp, MII_TG3_CTRL, new_adv);
                } else {
                        tg3_writephy(tp, MII_TG3_CTRL, 0);
                }
        } else {
                new_adv = tg3_advert_flowctrl_1000T(tp->link_config.flowctrl);
                new_adv |= ADVERTISE_CSMA;

                /* Asking for a specific link mode. */
                if (tp->link_config.speed == SPEED_1000) {
                        tg3_writephy(tp, MII_ADVERTISE, new_adv);

                        if (tp->link_config.duplex == DUPLEX_FULL)
                                new_adv = MII_TG3_CTRL_ADV_1000_FULL;
                        else
                                new_adv = MII_TG3_CTRL_ADV_1000_HALF;
                        if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0 ||
                            tp->pci_chip_rev_id == CHIPREV_ID_5701_B0)
                                new_adv |= (MII_TG3_CTRL_AS_MASTER |
                                            MII_TG3_CTRL_ENABLE_AS_MASTER);
                } else {
                        if (tp->link_config.speed == SPEED_100) {
                                if (tp->link_config.duplex == DUPLEX_FULL)
                                        new_adv |= ADVERTISE_100FULL;
                                else
                                        new_adv |= ADVERTISE_100HALF;
                        } else {
                                if (tp->link_config.duplex == DUPLEX_FULL)
                                        new_adv |= ADVERTISE_10FULL;
                                else
                                        new_adv |= ADVERTISE_10HALF;
                        }
                        tg3_writephy(tp, MII_ADVERTISE, new_adv);

                        new_adv = 0;
                }

                tg3_writephy(tp, MII_TG3_CTRL, new_adv);
        }

        if (tp->link_config.autoneg == AUTONEG_DISABLE &&
            tp->link_config.speed != SPEED_INVALID) {
                u32 bmcr, orig_bmcr;

                tp->link_config.active_speed = tp->link_config.speed;
                tp->link_config.active_duplex = tp->link_config.duplex;

                bmcr = 0;
                switch (tp->link_config.speed) {
                default:
                case SPEED_10:
                        break;

                case SPEED_100:
                        bmcr |= BMCR_SPEED100;
                        break;

                case SPEED_1000:
                        bmcr |= TG3_BMCR_SPEED1000;
                        break;
                }

                if (tp->link_config.duplex == DUPLEX_FULL)
                        bmcr |= BMCR_FULLDPLX;

                if (!tg3_readphy(tp, MII_BMCR, &orig_bmcr) &&
                    (bmcr != orig_bmcr)) {
                        tg3_writephy(tp, MII_BMCR, BMCR_LOOPBACK);
                        for (i = 0; i < 1500; i++) {
                                u32 tmp;

                                udelay(10);
                                if (tg3_readphy(tp, MII_BMSR, &tmp) ||
                                    tg3_readphy(tp, MII_BMSR, &tmp))
                                        continue;
                                if (!(tmp & BMSR_LSTATUS)) {
                                        udelay(40);
                                        break;
                                }
                        }
                        tg3_writephy(tp, MII_BMCR, bmcr);
                        udelay(40);
                }
        } else {
                tg3_writephy(tp, MII_BMCR,
                             BMCR_ANENABLE | BMCR_ANRESTART);
        }
}

static int tg3_init_5401phy_dsp(struct tg3 *tp)
{
        int err;

        /* Turn off tap power management. */
        /* Set Extended packet length bit */
        err  = tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x4c20);

        err |= tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x0012);
        err |= tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x1804);

        err |= tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x0013);
        err |= tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x1204);

        err |= tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x8006);
        err |= tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x0132);

        err |= tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x8006);
        err |= tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x0232);

        err |= tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x201f);
        err |= tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x0a20);

        udelay(40);

        return err;
}

static int tg3_copper_is_advertising_all(struct tg3 *tp, u32 mask)
{
        u32 adv_reg, all_mask = 0;

        if (mask & ADVERTISED_10baseT_Half)
                all_mask |= ADVERTISE_10HALF;
        if (mask & ADVERTISED_10baseT_Full)
                all_mask |= ADVERTISE_10FULL;
        if (mask & ADVERTISED_100baseT_Half)
                all_mask |= ADVERTISE_100HALF;
        if (mask & ADVERTISED_100baseT_Full)
                all_mask |= ADVERTISE_100FULL;

        if (tg3_readphy(tp, MII_ADVERTISE, &adv_reg))
                return 0;

        if ((adv_reg & all_mask) != all_mask)
                return 0;
        if (!(tp->tg3_flags & TG3_FLAG_10_100_ONLY)) {
                u32 tg3_ctrl;

                all_mask = 0;
                if (mask & ADVERTISED_1000baseT_Half)
                        all_mask |= ADVERTISE_1000HALF;
                if (mask & ADVERTISED_1000baseT_Full)
                        all_mask |= ADVERTISE_1000FULL;

                if (tg3_readphy(tp, MII_TG3_CTRL, &tg3_ctrl))
                        return 0;

                if ((tg3_ctrl & all_mask) != all_mask)
                        return 0;
        }
        return 1;
}

static int tg3_adv_1000T_flowctrl_ok(struct tg3 *tp, u32 *lcladv, u32 *rmtadv)
{
        u32 curadv, reqadv;

        if (tg3_readphy(tp, MII_ADVERTISE, lcladv))
                return 1;

        curadv = *lcladv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
        reqadv = tg3_advert_flowctrl_1000T(tp->link_config.flowctrl);

        if (tp->link_config.active_duplex == DUPLEX_FULL) {
                if (curadv != reqadv)
                        return 0;

                if (tp->tg3_flags & TG3_FLAG_PAUSE_AUTONEG)
                        tg3_readphy(tp, MII_LPA, rmtadv);
        } else {
                /* Reprogram the advertisement register, even if it
                 * does not affect the current link.  If the link
                 * gets renegotiated in the future, we can save an
                 * additional renegotiation cycle by advertising
                 * it correctly in the first place.
                 */
                if (curadv != reqadv) {
                        *lcladv &= ~(ADVERTISE_PAUSE_CAP |
                                     ADVERTISE_PAUSE_ASYM);
                        tg3_writephy(tp, MII_ADVERTISE, *lcladv | reqadv);
                }
        }

        return 1;
}

static int tg3_setup_copper_phy(struct tg3 *tp, int force_reset)
{
        int current_link_up;
        u32 bmsr, dummy;
        u32 lcl_adv, rmt_adv;
        u16 current_speed;
        u8 current_duplex;
        int i, err;

        tw32(MAC_EVENT, 0);

        tw32_f(MAC_STATUS,
             (MAC_STATUS_SYNC_CHANGED |
              MAC_STATUS_CFG_CHANGED |
              MAC_STATUS_MI_COMPLETION |
              MAC_STATUS_LNKSTATE_CHANGED));
        udelay(40);

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE,
                     (tp->mi_mode & ~MAC_MI_MODE_AUTO_POLL));
                udelay(80);
        }

        tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x02);

        /* Some third-party PHYs need to be reset on link going
         * down.
         */
        if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) &&
            netif_carrier_ok(tp->dev)) {
                tg3_readphy(tp, MII_BMSR, &bmsr);
                if (!tg3_readphy(tp, MII_BMSR, &bmsr) &&
                    !(bmsr & BMSR_LSTATUS))
                        force_reset = 1;
        }
        if (force_reset)
                tg3_phy_reset(tp);

        if ((tp->phy_id & PHY_ID_MASK) == PHY_ID_BCM5401) {
                tg3_readphy(tp, MII_BMSR, &bmsr);
                if (tg3_readphy(tp, MII_BMSR, &bmsr) ||
                    !(tp->tg3_flags & TG3_FLAG_INIT_COMPLETE))
                        bmsr = 0;

                if (!(bmsr & BMSR_LSTATUS)) {
                        err = tg3_init_5401phy_dsp(tp);
                        if (err)
                                return err;

                        tg3_readphy(tp, MII_BMSR, &bmsr);
                        for (i = 0; i < 1000; i++) {
                                udelay(10);
                                if (!tg3_readphy(tp, MII_BMSR, &bmsr) &&
                                    (bmsr & BMSR_LSTATUS)) {
                                        udelay(40);
                                        break;
                                }
                        }

                        if ((tp->phy_id & PHY_ID_REV_MASK) == PHY_REV_BCM5401_B0 &&
                            !(bmsr & BMSR_LSTATUS) &&
                            tp->link_config.active_speed == SPEED_1000) {
                                err = tg3_phy_reset(tp);
                                if (!err)
                                        err = tg3_init_5401phy_dsp(tp);
                                if (err)
                                        return err;
                        }
                }
        } else if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0 ||
                   tp->pci_chip_rev_id == CHIPREV_ID_5701_B0) {
                /* 5701 {A0,B0} CRC bug workaround */
                tg3_writephy(tp, 0x15, 0x0a75);
                tg3_writephy(tp, 0x1c, 0x8c68);
                tg3_writephy(tp, 0x1c, 0x8d68);
                tg3_writephy(tp, 0x1c, 0x8c68);
        }

        /* Clear pending interrupts... */
        tg3_readphy(tp, MII_TG3_ISTAT, &dummy);
        tg3_readphy(tp, MII_TG3_ISTAT, &dummy);

        if (tp->tg3_flags & TG3_FLAG_USE_MI_INTERRUPT)
                tg3_writephy(tp, MII_TG3_IMASK, ~MII_TG3_INT_LINKCHG);
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5906)
                tg3_writephy(tp, MII_TG3_IMASK, ~0);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                if (tp->led_ctrl == LED_CTRL_MODE_PHY_1)
                        tg3_writephy(tp, MII_TG3_EXT_CTRL,
                                     MII_TG3_EXT_CTRL_LNK3_LED_MODE);