Attachment 186870 Details for Bug 218579 – if_bge.c patched with the bge-WOL patch from https://bitbucket.org/w4w/bge-wol-freebsd-10.1-patch/overview

if_bge.c patched with the bge-WOL patch from https://bitbucket.org/w4w/bge-wol-freebsd-10.1-patch/overview

if_bge.c (text/x-csrc), 200.63 KB, created by thfrdue on 2017-10-03 01:55:19 UTC

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Creator: thfrdue

Created: 2017-10-03 01:55:19 UTC

Size: 200.63 KB

patch

obsolete

>/*-
> * Copyright (c) 2001 Wind River Systems
> * Copyright (c) 1997, 1998, 1999, 2001
> *	Bill Paul <wpaul@windriver.com>.  All rights reserved.
> *
> * Redistribution and use in source and binary forms, with or without
> * modification, are permitted provided that the following conditions
> * are met:
> * 1. Redistributions of source code must retain the above copyright
> *    notice, this list of conditions and the following disclaimer.
> * 2. Redistributions in binary form must reproduce the above copyright
> *    notice, this list of conditions and the following disclaimer in the
> *    documentation and/or other materials provided with the distribution.
> * 3. All advertising materials mentioning features or use of this software
> *    must display the following acknowledgement:
> *	This product includes software developed by Bill Paul.
> * 4. Neither the name of the author nor the names of any co-contributors
> *    may be used to endorse or promote products derived from this software
> *    without specific prior written permission.
> *
> * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
> * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
> * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
> * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
> * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
> * THE POSSIBILITY OF SUCH DAMAGE.
> */
>
>#include <sys/cdefs.h>
>__FBSDID("$FreeBSD$");
>
>/*
> * Broadcom BCM57xx(x)/BCM590x NetXtreme and NetLink family Ethernet driver
> *
> * The Broadcom BCM5700 is based on technology originally developed by
> * Alteon Networks as part of the Tigon I and Tigon II Gigabit Ethernet
> * MAC chips. The BCM5700, sometimes referred to as the Tigon III, has
> * two on-board MIPS R4000 CPUs and can have as much as 16MB of external
> * SSRAM. The BCM5700 supports TCP, UDP and IP checksum offload, jumbo
> * frames, highly configurable RX filtering, and 16 RX and TX queues
> * (which, along with RX filter rules, can be used for QOS applications).
> * Other features, such as TCP segmentation, may be available as part
> * of value-added firmware updates. Unlike the Tigon I and Tigon II,
> * firmware images can be stored in hardware and need not be compiled
> * into the driver.
> *
> * The BCM5700 supports the PCI v2.2 and PCI-X v1.0 standards, and will
> * function in a 32-bit/64-bit 33/66Mhz bus, or a 64-bit/133Mhz bus.
> *
> * The BCM5701 is a single-chip solution incorporating both the BCM5700
> * MAC and a BCM5401 10/100/1000 PHY. Unlike the BCM5700, the BCM5701
> * does not support external SSRAM.
> *
> * Broadcom also produces a variation of the BCM5700 under the "Altima"
> * brand name, which is functionally similar but lacks PCI-X support.
> *
> * Without external SSRAM, you can only have at most 4 TX rings,
> * and the use of the mini RX ring is disabled. This seems to imply
> * that these features are simply not available on the BCM5701. As a
> * result, this driver does not implement any support for the mini RX
> * ring.
> */
>
>#ifdef HAVE_KERNEL_OPTION_HEADERS
>#include "opt_device_polling.h"
>#endif
>
>#include <sys/param.h>
>#include <sys/endian.h>
>#include <sys/systm.h>
>#include <sys/sockio.h>
>#include <sys/mbuf.h>
>#include <sys/malloc.h>
>#include <sys/kernel.h>
>#include <sys/module.h>
>#include <sys/socket.h>
>#include <sys/sysctl.h>
>#include <sys/taskqueue.h>
>
>#include <net/if.h>
>#include <net/if_var.h>
>#include <net/if_arp.h>
>#include <net/ethernet.h>
>#include <net/if_dl.h>
>#include <net/if_media.h>
>
>#include <net/bpf.h>
>
>#include <net/if_types.h>
>#include <net/if_vlan_var.h>
>
>#include <netinet/in_systm.h>
>#include <netinet/in.h>
>#include <netinet/ip.h>
>#include <netinet/tcp.h>
>
>#include <machine/bus.h>
>#include <machine/resource.h>
>#include <sys/bus.h>
>#include <sys/rman.h>
>
>#include <dev/mii/mii.h>
>#include <dev/mii/miivar.h>
>#include "miidevs.h"
>#include <dev/mii/brgphyreg.h>
>
>#ifdef __sparc64__
>#include <dev/ofw/ofw_bus.h>
>#include <dev/ofw/openfirm.h>
>#include <machine/ofw_machdep.h>
>#include <machine/ver.h>
>#endif
>
>#include <dev/pci/pcireg.h>
>#include <dev/pci/pcivar.h>
>
>#include <dev/bge/if_bgereg.h>
>
>#define	BGE_CSUM_FEATURES	(CSUM_IP | CSUM_TCP)
>#define	ETHER_MIN_NOPAD		(ETHER_MIN_LEN - ETHER_CRC_LEN) /* i.e., 60 */
>
>MODULE_DEPEND(bge, pci, 1, 1, 1);
>MODULE_DEPEND(bge, ether, 1, 1, 1);
>MODULE_DEPEND(bge, miibus, 1, 1, 1);
>
>/* "device miibus" required.  See GENERIC if you get errors here. */
>#include "miibus_if.h"
>
>/*
> * Various supported device vendors/types and their names. Note: the
> * spec seems to indicate that the hardware still has Alteon's vendor
> * ID burned into it, though it will always be overriden by the vendor
> * ID in the EEPROM. Just to be safe, we cover all possibilities.
> */
>static const struct bge_type {
>	uint16_t	bge_vid;
>	uint16_t	bge_did;
>} bge_devs[] = {
>	{ ALTEON_VENDORID,	ALTEON_DEVICEID_BCM5700 },
>	{ ALTEON_VENDORID,	ALTEON_DEVICEID_BCM5701 },
>
>	{ ALTIMA_VENDORID,	ALTIMA_DEVICE_AC1000 },
>	{ ALTIMA_VENDORID,	ALTIMA_DEVICE_AC1002 },
>	{ ALTIMA_VENDORID,	ALTIMA_DEVICE_AC9100 },
>
>	{ APPLE_VENDORID,	APPLE_DEVICE_BCM5701 },
>
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5700 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5701 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5702 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5702_ALT },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5702X },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5703 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5703_ALT },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5703X },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5704C },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5704S },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5704S_ALT },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5705 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5705F },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5705K },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5705M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5705M_ALT },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5714C },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5714S },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5715 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5715S },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5717 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5717C },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5718 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5719 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5720 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5721 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5722 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5723 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5725 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5727 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5750 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5750M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5751 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5751F },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5751M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5752 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5752M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5753 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5753F },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5753M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5754 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5754M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5755 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5755M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5756 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5761 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5761E },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5761S },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5761SE },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5762 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5764 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5780 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5780S },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5781 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5782 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5784 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5785F },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5785G },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5786 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5787 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5787F },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5787M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5788 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5789 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5901 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5901A2 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5903M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5906 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM5906M },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57760 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57761 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57762 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57764 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57765 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57766 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57767 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57780 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57781 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57782 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57785 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57786 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57787 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57788 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57790 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57791 },
>	{ BCOM_VENDORID,	BCOM_DEVICEID_BCM57795 },
>
>	{ SK_VENDORID,		SK_DEVICEID_ALTIMA },
>
>	{ TC_VENDORID,		TC_DEVICEID_3C996 },
>
>	{ FJTSU_VENDORID,	FJTSU_DEVICEID_PW008GE4 },
>	{ FJTSU_VENDORID,	FJTSU_DEVICEID_PW008GE5 },
>	{ FJTSU_VENDORID,	FJTSU_DEVICEID_PP250450 },
>
>	{ 0, 0 }
>};
>
>static const struct bge_vendor {
>	uint16_t	v_id;
>	const char	*v_name;
>} bge_vendors[] = {
>	{ ALTEON_VENDORID,	"Alteon" },
>	{ ALTIMA_VENDORID,	"Altima" },
>	{ APPLE_VENDORID,	"Apple" },
>	{ BCOM_VENDORID,	"Broadcom" },
>	{ SK_VENDORID,		"SysKonnect" },
>	{ TC_VENDORID,		"3Com" },
>	{ FJTSU_VENDORID,	"Fujitsu" },
>
>	{ 0, NULL }
>};
>
>static const struct bge_revision {
>	uint32_t	br_chipid;
>	const char	*br_name;
>} bge_revisions[] = {
>	{ BGE_CHIPID_BCM5700_A0,	"BCM5700 A0" },
>	{ BGE_CHIPID_BCM5700_A1,	"BCM5700 A1" },
>	{ BGE_CHIPID_BCM5700_B0,	"BCM5700 B0" },
>	{ BGE_CHIPID_BCM5700_B1,	"BCM5700 B1" },
>	{ BGE_CHIPID_BCM5700_B2,	"BCM5700 B2" },
>	{ BGE_CHIPID_BCM5700_B3,	"BCM5700 B3" },
>	{ BGE_CHIPID_BCM5700_ALTIMA,	"BCM5700 Altima" },
>	{ BGE_CHIPID_BCM5700_C0,	"BCM5700 C0" },
>	{ BGE_CHIPID_BCM5701_A0,	"BCM5701 A0" },
>	{ BGE_CHIPID_BCM5701_B0,	"BCM5701 B0" },
>	{ BGE_CHIPID_BCM5701_B2,	"BCM5701 B2" },
>	{ BGE_CHIPID_BCM5701_B5,	"BCM5701 B5" },
>	{ BGE_CHIPID_BCM5703_A0,	"BCM5703 A0" },
>	{ BGE_CHIPID_BCM5703_A1,	"BCM5703 A1" },
>	{ BGE_CHIPID_BCM5703_A2,	"BCM5703 A2" },
>	{ BGE_CHIPID_BCM5703_A3,	"BCM5703 A3" },
>	{ BGE_CHIPID_BCM5703_B0,	"BCM5703 B0" },
>	{ BGE_CHIPID_BCM5704_A0,	"BCM5704 A0" },
>	{ BGE_CHIPID_BCM5704_A1,	"BCM5704 A1" },
>	{ BGE_CHIPID_BCM5704_A2,	"BCM5704 A2" },
>	{ BGE_CHIPID_BCM5704_A3,	"BCM5704 A3" },
>	{ BGE_CHIPID_BCM5704_B0,	"BCM5704 B0" },
>	{ BGE_CHIPID_BCM5705_A0,	"BCM5705 A0" },
>	{ BGE_CHIPID_BCM5705_A1,	"BCM5705 A1" },
>	{ BGE_CHIPID_BCM5705_A2,	"BCM5705 A2" },
>	{ BGE_CHIPID_BCM5705_A3,	"BCM5705 A3" },
>	{ BGE_CHIPID_BCM5750_A0,	"BCM5750 A0" },
>	{ BGE_CHIPID_BCM5750_A1,	"BCM5750 A1" },
>	{ BGE_CHIPID_BCM5750_A3,	"BCM5750 A3" },
>	{ BGE_CHIPID_BCM5750_B0,	"BCM5750 B0" },
>	{ BGE_CHIPID_BCM5750_B1,	"BCM5750 B1" },
>	{ BGE_CHIPID_BCM5750_C0,	"BCM5750 C0" },
>	{ BGE_CHIPID_BCM5750_C1,	"BCM5750 C1" },
>	{ BGE_CHIPID_BCM5750_C2,	"BCM5750 C2" },
>	{ BGE_CHIPID_BCM5714_A0,	"BCM5714 A0" },
>	{ BGE_CHIPID_BCM5752_A0,	"BCM5752 A0" },
>	{ BGE_CHIPID_BCM5752_A1,	"BCM5752 A1" },
>	{ BGE_CHIPID_BCM5752_A2,	"BCM5752 A2" },
>	{ BGE_CHIPID_BCM5714_B0,	"BCM5714 B0" },
>	{ BGE_CHIPID_BCM5714_B3,	"BCM5714 B3" },
>	{ BGE_CHIPID_BCM5715_A0,	"BCM5715 A0" },
>	{ BGE_CHIPID_BCM5715_A1,	"BCM5715 A1" },
>	{ BGE_CHIPID_BCM5715_A3,	"BCM5715 A3" },
>	{ BGE_CHIPID_BCM5717_A0,	"BCM5717 A0" },
>	{ BGE_CHIPID_BCM5717_B0,	"BCM5717 B0" },
>	{ BGE_CHIPID_BCM5717_C0,	"BCM5717 C0" },
>	{ BGE_CHIPID_BCM5719_A0,	"BCM5719 A0" },
>	{ BGE_CHIPID_BCM5720_A0,	"BCM5720 A0" },
>	{ BGE_CHIPID_BCM5755_A0,	"BCM5755 A0" },
>	{ BGE_CHIPID_BCM5755_A1,	"BCM5755 A1" },
>	{ BGE_CHIPID_BCM5755_A2,	"BCM5755 A2" },
>	{ BGE_CHIPID_BCM5722_A0,	"BCM5722 A0" },
>	{ BGE_CHIPID_BCM5761_A0,	"BCM5761 A0" },
>	{ BGE_CHIPID_BCM5761_A1,	"BCM5761 A1" },
>	{ BGE_CHIPID_BCM5762_A0,	"BCM5762 A0" },
>	{ BGE_CHIPID_BCM5784_A0,	"BCM5784 A0" },
>	{ BGE_CHIPID_BCM5784_A1,	"BCM5784 A1" },
>	/* 5754 and 5787 share the same ASIC ID */
>	{ BGE_CHIPID_BCM5787_A0,	"BCM5754/5787 A0" },
>	{ BGE_CHIPID_BCM5787_A1,	"BCM5754/5787 A1" },
>	{ BGE_CHIPID_BCM5787_A2,	"BCM5754/5787 A2" },
>	{ BGE_CHIPID_BCM5906_A1,	"BCM5906 A1" },
>	{ BGE_CHIPID_BCM5906_A2,	"BCM5906 A2" },
>	{ BGE_CHIPID_BCM57765_A0,	"BCM57765 A0" },
>	{ BGE_CHIPID_BCM57765_B0,	"BCM57765 B0" },
>	{ BGE_CHIPID_BCM57780_A0,	"BCM57780 A0" },
>	{ BGE_CHIPID_BCM57780_A1,	"BCM57780 A1" },
>
>	{ 0, NULL }
>};
>
>/*
> * Some defaults for major revisions, so that newer steppings
> * that we don't know about have a shot at working.
> */
>static const struct bge_revision bge_majorrevs[] = {
>	{ BGE_ASICREV_BCM5700,		"unknown BCM5700" },
>	{ BGE_ASICREV_BCM5701,		"unknown BCM5701" },
>	{ BGE_ASICREV_BCM5703,		"unknown BCM5703" },
>	{ BGE_ASICREV_BCM5704,		"unknown BCM5704" },
>	{ BGE_ASICREV_BCM5705,		"unknown BCM5705" },
>	{ BGE_ASICREV_BCM5750,		"unknown BCM5750" },
>	{ BGE_ASICREV_BCM5714_A0,	"unknown BCM5714" },
>	{ BGE_ASICREV_BCM5752,		"unknown BCM5752" },
>	{ BGE_ASICREV_BCM5780,		"unknown BCM5780" },
>	{ BGE_ASICREV_BCM5714,		"unknown BCM5714" },
>	{ BGE_ASICREV_BCM5755,		"unknown BCM5755" },
>	{ BGE_ASICREV_BCM5761,		"unknown BCM5761" },
>	{ BGE_ASICREV_BCM5784,		"unknown BCM5784" },
>	{ BGE_ASICREV_BCM5785,		"unknown BCM5785" },
>	/* 5754 and 5787 share the same ASIC ID */
>	{ BGE_ASICREV_BCM5787,		"unknown BCM5754/5787" },
>	{ BGE_ASICREV_BCM5906,		"unknown BCM5906" },
>	{ BGE_ASICREV_BCM57765,		"unknown BCM57765" },
>	{ BGE_ASICREV_BCM57766,		"unknown BCM57766" },
>	{ BGE_ASICREV_BCM57780,		"unknown BCM57780" },
>	{ BGE_ASICREV_BCM5717,		"unknown BCM5717" },
>	{ BGE_ASICREV_BCM5719,		"unknown BCM5719" },
>	{ BGE_ASICREV_BCM5720,		"unknown BCM5720" },
>	{ BGE_ASICREV_BCM5762,		"unknown BCM5762" },
>
>	{ 0, NULL }
>};
>
>#define	BGE_IS_JUMBO_CAPABLE(sc)	((sc)->bge_flags & BGE_FLAG_JUMBO)
>#define	BGE_IS_5700_FAMILY(sc)		((sc)->bge_flags & BGE_FLAG_5700_FAMILY)
>#define	BGE_IS_5705_PLUS(sc)		((sc)->bge_flags & BGE_FLAG_5705_PLUS)
>#define	BGE_IS_5714_FAMILY(sc)		((sc)->bge_flags & BGE_FLAG_5714_FAMILY)
>#define	BGE_IS_575X_PLUS(sc)		((sc)->bge_flags & BGE_FLAG_575X_PLUS)
>#define	BGE_IS_5755_PLUS(sc)		((sc)->bge_flags & BGE_FLAG_5755_PLUS)
>#define	BGE_IS_5717_PLUS(sc)		((sc)->bge_flags & BGE_FLAG_5717_PLUS)
>#define	BGE_IS_57765_PLUS(sc)		((sc)->bge_flags & BGE_FLAG_57765_PLUS)
>
>static uint32_t bge_chipid(device_t);
>static const struct bge_vendor * bge_lookup_vendor(uint16_t);
>static const struct bge_revision * bge_lookup_rev(uint32_t);
>
>typedef int	(*bge_eaddr_fcn_t)(struct bge_softc *, uint8_t[]);
>
>static int bge_probe(device_t);
>static int bge_attach(device_t);
>static int bge_detach(device_t);
>static int bge_suspend(device_t);
>static int bge_resume(device_t);
>static void bge_release_resources(struct bge_softc *);
>static void bge_dma_map_addr(void *, bus_dma_segment_t *, int, int);
>static int bge_dma_alloc(struct bge_softc *);
>static void bge_dma_free(struct bge_softc *);
>static int bge_dma_ring_alloc(struct bge_softc *, bus_size_t, bus_size_t,
>    bus_dma_tag_t *, uint8_t **, bus_dmamap_t *, bus_addr_t *, const char *);
>
>static void bge_devinfo(struct bge_softc *);
>static int bge_mbox_reorder(struct bge_softc *);
>
>static int bge_get_eaddr_fw(struct bge_softc *sc, uint8_t ether_addr[]);
>static int bge_get_eaddr_mem(struct bge_softc *, uint8_t[]);
>static int bge_get_eaddr_nvram(struct bge_softc *, uint8_t[]);
>static int bge_get_eaddr_eeprom(struct bge_softc *, uint8_t[]);
>static int bge_get_eaddr(struct bge_softc *, uint8_t[]);
>
>static void bge_txeof(struct bge_softc *, uint16_t);
>static void bge_rxcsum(struct bge_softc *, struct bge_rx_bd *, struct mbuf *);
>static int bge_rxeof(struct bge_softc *, uint16_t, int);
>
>static void bge_asf_driver_up (struct bge_softc *);
>static void bge_tick(void *);
>static void bge_stats_clear_regs(struct bge_softc *);
>static void bge_stats_update(struct bge_softc *);
>static void bge_stats_update_regs(struct bge_softc *);
>static struct mbuf *bge_check_short_dma(struct mbuf *);
>static struct mbuf *bge_setup_tso(struct bge_softc *, struct mbuf *,
>    uint16_t *, uint16_t *);
>static int bge_encap(struct bge_softc *, struct mbuf **, uint32_t *);
>
>static void bge_intr(void *);
>static int bge_msi_intr(void *);
>static void bge_intr_task(void *, int);
>static void bge_start_locked(if_t);
>static void bge_start(if_t);
>static int bge_ioctl(if_t, u_long, caddr_t);
>static void bge_init_locked(struct bge_softc *);
>static void bge_init(void *);
>static void bge_stop_block(struct bge_softc *, bus_size_t, uint32_t);
>static void bge_stop(struct bge_softc *);
>static void bge_watchdog(struct bge_softc *);
>static int bge_shutdown(device_t);
>static int bge_ifmedia_upd_locked(if_t);
>static int bge_ifmedia_upd(if_t);
>static void bge_ifmedia_sts(if_t, struct ifmediareq *);
>static uint64_t bge_get_counter(if_t, ift_counter);
>
>static uint8_t bge_nvram_getbyte(struct bge_softc *, int, uint8_t *);
>static int bge_read_nvram(struct bge_softc *, caddr_t, int, int);
>
>static uint8_t bge_eeprom_getbyte(struct bge_softc *, int, uint8_t *);
>static int bge_read_eeprom(struct bge_softc *, caddr_t, int, int);
>
>static void bge_setpromisc(struct bge_softc *);
>static void bge_setmulti(struct bge_softc *);
>static void bge_setvlan(struct bge_softc *);
>
>static __inline void bge_rxreuse_std(struct bge_softc *, int);
>static __inline void bge_rxreuse_jumbo(struct bge_softc *, int);
>static int bge_newbuf_std(struct bge_softc *, int);
>static int bge_newbuf_jumbo(struct bge_softc *, int);
>static int bge_init_rx_ring_std(struct bge_softc *);
>static void bge_free_rx_ring_std(struct bge_softc *);
>static int bge_init_rx_ring_jumbo(struct bge_softc *);
>static void bge_free_rx_ring_jumbo(struct bge_softc *);
>static void bge_free_tx_ring(struct bge_softc *);
>static int bge_init_tx_ring(struct bge_softc *);
>
>static int bge_chipinit(struct bge_softc *);
>static int bge_blockinit(struct bge_softc *);
>static uint32_t bge_dma_swap_options(struct bge_softc *);
>
>static int bge_has_eaddr(struct bge_softc *);
>static uint32_t bge_readmem_ind(struct bge_softc *, int);
>static void bge_writemem_ind(struct bge_softc *, int, int);
>static void bge_writembx(struct bge_softc *, int, int);
>#ifdef notdef
>static uint32_t bge_readreg_ind(struct bge_softc *, int);
>#endif
>static void bge_writemem_direct(struct bge_softc *, int, int);
>static void bge_writereg_ind(struct bge_softc *, int, int);
>
>static int bge_miibus_readreg(device_t, int, int);
>static int bge_miibus_writereg(device_t, int, int, int);
>static void bge_miibus_statchg(device_t);
>#ifdef DEVICE_POLLING
>static int bge_poll(if_t ifp, enum poll_cmd cmd, int count);
>#endif
>
>#define	BGE_RESET_SHUTDOWN	0
>#define	BGE_RESET_START		1
>#define	BGE_RESET_SUSPEND	2
>static void bge_sig_post_reset(struct bge_softc *, int);
>static void bge_sig_legacy(struct bge_softc *, int);
>static void bge_sig_pre_reset(struct bge_softc *, int);
>static void bge_stop_fw(struct bge_softc *);
>static int bge_reset(struct bge_softc *);
>static void bge_link_upd(struct bge_softc *);
>static void bge_setwol(struct bge_softc *);
>
>static void bge_ape_lock_init(struct bge_softc *);
>static void bge_ape_read_fw_ver(struct bge_softc *);
>static int bge_ape_lock(struct bge_softc *, int);
>static void bge_ape_unlock(struct bge_softc *, int);
>static void bge_ape_send_event(struct bge_softc *, uint32_t);
>static void bge_ape_driver_state_change(struct bge_softc *, int);
>
>/*
> * The BGE_REGISTER_DEBUG option is only for low-level debugging.  It may
> * leak information to untrusted users.  It is also known to cause alignment
> * traps on certain architectures.
> */
>#ifdef BGE_REGISTER_DEBUG
>static int bge_sysctl_debug_info(SYSCTL_HANDLER_ARGS);
>static int bge_sysctl_reg_read(SYSCTL_HANDLER_ARGS);
>static int bge_sysctl_ape_read(SYSCTL_HANDLER_ARGS);
>static int bge_sysctl_mem_read(SYSCTL_HANDLER_ARGS);
>#endif
>static void bge_add_sysctls(struct bge_softc *);
>static void bge_add_sysctl_stats_regs(struct bge_softc *,
>    struct sysctl_ctx_list *, struct sysctl_oid_list *);
>static void bge_add_sysctl_stats(struct bge_softc *, struct sysctl_ctx_list *,
>    struct sysctl_oid_list *);
>static int bge_sysctl_stats(SYSCTL_HANDLER_ARGS);
>
>static device_method_t bge_methods[] = {
>	/* Device interface */
>	DEVMETHOD(device_probe,		bge_probe),
>	DEVMETHOD(device_attach,	bge_attach),
>	DEVMETHOD(device_detach,	bge_detach),
>	DEVMETHOD(device_shutdown,	bge_shutdown),
>	DEVMETHOD(device_suspend,	bge_suspend),
>	DEVMETHOD(device_resume,	bge_resume),
>
>	/* MII interface */
>	DEVMETHOD(miibus_readreg,	bge_miibus_readreg),
>	DEVMETHOD(miibus_writereg,	bge_miibus_writereg),
>	DEVMETHOD(miibus_statchg,	bge_miibus_statchg),
>
>	DEVMETHOD_END
>};
>
>static driver_t bge_driver = {
>	"bge",
>	bge_methods,
>	sizeof(struct bge_softc)
>};
>
>static devclass_t bge_devclass;
>
>DRIVER_MODULE(bge, pci, bge_driver, bge_devclass, 0, 0);
>DRIVER_MODULE(miibus, bge, miibus_driver, miibus_devclass, 0, 0);
>
>static int bge_allow_asf = 1;
>
>static SYSCTL_NODE(_hw, OID_AUTO, bge, CTLFLAG_RD, 0, "BGE driver parameters");
>SYSCTL_INT(_hw_bge, OID_AUTO, allow_asf, CTLFLAG_RDTUN, &bge_allow_asf, 0,
>	"Allow ASF mode if available");
>
>#define	SPARC64_BLADE_1500_MODEL	"SUNW,Sun-Blade-1500"
>#define	SPARC64_BLADE_1500_PATH_BGE	"/pci@1f,700000/network@2"
>#define	SPARC64_BLADE_2500_MODEL	"SUNW,Sun-Blade-2500"
>#define	SPARC64_BLADE_2500_PATH_BGE	"/pci@1c,600000/network@3"
>#define	SPARC64_OFW_SUBVENDOR		"subsystem-vendor-id"
>
>static int
>bge_has_eaddr(struct bge_softc *sc)
>{
>#ifdef __sparc64__
>	char buf[sizeof(SPARC64_BLADE_1500_PATH_BGE)];
>	device_t dev;
>	uint32_t subvendor;
>
>	dev = sc->bge_dev;
>
>	/*
>	 * The on-board BGEs found in sun4u machines aren't fitted with
>	 * an EEPROM which means that we have to obtain the MAC address
>	 * via OFW and that some tests will always fail.  We distinguish
>	 * such BGEs by the subvendor ID, which also has to be obtained
>	 * from OFW instead of the PCI configuration space as the latter
>	 * indicates Broadcom as the subvendor of the netboot interface.
>	 * For early Blade 1500 and 2500 we even have to check the OFW
>	 * device path as the subvendor ID always defaults to Broadcom
>	 * there.
>	 */
>	if (OF_getprop(ofw_bus_get_node(dev), SPARC64_OFW_SUBVENDOR,
>	    &subvendor, sizeof(subvendor)) == sizeof(subvendor) &&
>	    (subvendor == FJTSU_VENDORID || subvendor == SUN_VENDORID))
>		return (0);
>	memset(buf, 0, sizeof(buf));
>	if (OF_package_to_path(ofw_bus_get_node(dev), buf, sizeof(buf)) > 0) {
>		if (strcmp(sparc64_model, SPARC64_BLADE_1500_MODEL) == 0 &&
>		    strcmp(buf, SPARC64_BLADE_1500_PATH_BGE) == 0)
>			return (0);
>		if (strcmp(sparc64_model, SPARC64_BLADE_2500_MODEL) == 0 &&
>		    strcmp(buf, SPARC64_BLADE_2500_PATH_BGE) == 0)
>			return (0);
>	}
>#endif
>	return (1);
>}
>
>static uint32_t
>bge_readmem_ind(struct bge_softc *sc, int off)
>{
>	device_t dev;
>	uint32_t val;
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906 &&
>	    off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
>		return (0);
>
>	dev = sc->bge_dev;
>
>	pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
>	val = pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4);
>	pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
>	return (val);
>}
>
>static void
>bge_writemem_ind(struct bge_softc *sc, int off, int val)
>{
>	device_t dev;
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906 &&
>	    off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
>		return;
>
>	dev = sc->bge_dev;
>
>	pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
>	pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
>	pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
>}
>
>#ifdef notdef
>static uint32_t
>bge_readreg_ind(struct bge_softc *sc, int off)
>{
>	device_t dev;
>
>	dev = sc->bge_dev;
>
>	pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
>	return (pci_read_config(dev, BGE_PCI_REG_DATA, 4));
>}
>#endif
>
>static void
>bge_writereg_ind(struct bge_softc *sc, int off, int val)
>{
>	device_t dev;
>
>	dev = sc->bge_dev;
>
>	pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
>	pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
>}
>
>static void
>bge_writemem_direct(struct bge_softc *sc, int off, int val)
>{
>	CSR_WRITE_4(sc, off, val);
>}
>
>static void
>bge_writembx(struct bge_softc *sc, int off, int val)
>{
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
>		off += BGE_LPMBX_IRQ0_HI - BGE_MBX_IRQ0_HI;
>
>	CSR_WRITE_4(sc, off, val);
>	if ((sc->bge_flags & BGE_FLAG_MBOX_REORDER) != 0)
>		CSR_READ_4(sc, off);
>}
>
>/*
> * Clear all stale locks and select the lock for this driver instance.
> */
>static void
>bge_ape_lock_init(struct bge_softc *sc)
>{
>	uint32_t bit, regbase;
>	int i;
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5761)
>		regbase = BGE_APE_LOCK_GRANT;
>	else
>		regbase = BGE_APE_PER_LOCK_GRANT;
>
>	/* Clear any stale locks. */
>	for (i = BGE_APE_LOCK_PHY0; i <= BGE_APE_LOCK_GPIO; i++) {
>		switch (i) {
>		case BGE_APE_LOCK_PHY0:
>		case BGE_APE_LOCK_PHY1:
>		case BGE_APE_LOCK_PHY2:
>		case BGE_APE_LOCK_PHY3:
>			bit = BGE_APE_LOCK_GRANT_DRIVER0;
>			break;
>		default:
>			if (sc->bge_func_addr == 0)
>				bit = BGE_APE_LOCK_GRANT_DRIVER0;
>			else
>				bit = (1 << sc->bge_func_addr);
>		}
>		APE_WRITE_4(sc, regbase + 4 * i, bit);
>	}
>
>	/* Select the PHY lock based on the device's function number. */
>	switch (sc->bge_func_addr) {
>	case 0:
>		sc->bge_phy_ape_lock = BGE_APE_LOCK_PHY0;
>		break;
>	case 1:
>		sc->bge_phy_ape_lock = BGE_APE_LOCK_PHY1;
>		break;
>	case 2:
>		sc->bge_phy_ape_lock = BGE_APE_LOCK_PHY2;
>		break;
>	case 3:
>		sc->bge_phy_ape_lock = BGE_APE_LOCK_PHY3;
>		break;
>	default:
>		device_printf(sc->bge_dev,
>		    "PHY lock not supported on this function\n");
>	}
>}
>
>/*
> * Check for APE firmware, set flags, and print version info.
> */
>static void
>bge_ape_read_fw_ver(struct bge_softc *sc)
>{
>	const char *fwtype;
>	uint32_t apedata, features;
>
>	/* Check for a valid APE signature in shared memory. */
>	apedata = APE_READ_4(sc, BGE_APE_SEG_SIG);
>	if (apedata != BGE_APE_SEG_SIG_MAGIC) {
>		sc->bge_mfw_flags &= ~ BGE_MFW_ON_APE;
>		return;
>	}
>
>	/* Check if APE firmware is running. */
>	apedata = APE_READ_4(sc, BGE_APE_FW_STATUS);
>	if ((apedata & BGE_APE_FW_STATUS_READY) == 0) {
>		device_printf(sc->bge_dev, "APE signature found "
>		    "but FW status not ready! 0x%08x\n", apedata);
>		return;
>	}
>
>	sc->bge_mfw_flags |= BGE_MFW_ON_APE;
>
>	/* Fetch the APE firwmare type and version. */
>	apedata = APE_READ_4(sc, BGE_APE_FW_VERSION);
>	features = APE_READ_4(sc, BGE_APE_FW_FEATURES);
>	if ((features & BGE_APE_FW_FEATURE_NCSI) != 0) {
>		sc->bge_mfw_flags |= BGE_MFW_TYPE_NCSI;
>		fwtype = "NCSI";
>	} else if ((features & BGE_APE_FW_FEATURE_DASH) != 0) {
>		sc->bge_mfw_flags |= BGE_MFW_TYPE_DASH;
>		fwtype = "DASH";
>	} else
>		fwtype = "UNKN";
>
>	/* Print the APE firmware version. */
>	device_printf(sc->bge_dev, "APE FW version: %s v%d.%d.%d.%d\n",
>	    fwtype,
>	    (apedata & BGE_APE_FW_VERSION_MAJMSK) >> BGE_APE_FW_VERSION_MAJSFT,
>	    (apedata & BGE_APE_FW_VERSION_MINMSK) >> BGE_APE_FW_VERSION_MINSFT,
>	    (apedata & BGE_APE_FW_VERSION_REVMSK) >> BGE_APE_FW_VERSION_REVSFT,
>	    (apedata & BGE_APE_FW_VERSION_BLDMSK));
>}
>
>static int
>bge_ape_lock(struct bge_softc *sc, int locknum)
>{
>	uint32_t bit, gnt, req, status;
>	int i, off;
>
>	if ((sc->bge_mfw_flags & BGE_MFW_ON_APE) == 0)
>		return (0);
>
>	/* Lock request/grant registers have different bases. */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5761) {
>		req = BGE_APE_LOCK_REQ;
>		gnt = BGE_APE_LOCK_GRANT;
>	} else {
>		req = BGE_APE_PER_LOCK_REQ;
>		gnt = BGE_APE_PER_LOCK_GRANT;
>	}
>
>	off = 4 * locknum;
>
>	switch (locknum) {
>	case BGE_APE_LOCK_GPIO:
>		/* Lock required when using GPIO. */
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5761)
>			return (0);
>		if (sc->bge_func_addr == 0)
>			bit = BGE_APE_LOCK_REQ_DRIVER0;
>		else
>			bit = (1 << sc->bge_func_addr);
>		break;
>	case BGE_APE_LOCK_GRC:
>		/* Lock required to reset the device. */
>		if (sc->bge_func_addr == 0)
>			bit = BGE_APE_LOCK_REQ_DRIVER0;
>		else
>			bit = (1 << sc->bge_func_addr);
>		break;
>	case BGE_APE_LOCK_MEM:
>		/* Lock required when accessing certain APE memory. */
>		if (sc->bge_func_addr == 0)
>			bit = BGE_APE_LOCK_REQ_DRIVER0;
>		else
>			bit = (1 << sc->bge_func_addr);
>		break;
>	case BGE_APE_LOCK_PHY0:
>	case BGE_APE_LOCK_PHY1:
>	case BGE_APE_LOCK_PHY2:
>	case BGE_APE_LOCK_PHY3:
>		/* Lock required when accessing PHYs. */
>		bit = BGE_APE_LOCK_REQ_DRIVER0;
>		break;
>	default:
>		return (EINVAL);
>	}
>
>	/* Request a lock. */
>	APE_WRITE_4(sc, req + off, bit);
>
>	/* Wait up to 1 second to acquire lock. */
>	for (i = 0; i < 20000; i++) {
>		status = APE_READ_4(sc, gnt + off);
>		if (status == bit)
>			break;
>		DELAY(50);
>	}
>
>	/* Handle any errors. */
>	if (status != bit) {
>		device_printf(sc->bge_dev, "APE lock %d request failed! "
>		    "request = 0x%04x[0x%04x], status = 0x%04x[0x%04x]\n",
>		    locknum, req + off, bit & 0xFFFF, gnt + off,
>		    status & 0xFFFF);
>		/* Revoke the lock request. */
>		APE_WRITE_4(sc, gnt + off, bit);
>		return (EBUSY);
>	}
>
>	return (0);
>}
>
>static void
>bge_ape_unlock(struct bge_softc *sc, int locknum)
>{
>	uint32_t bit, gnt;
>	int off;
>
>	if ((sc->bge_mfw_flags & BGE_MFW_ON_APE) == 0)
>		return;
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5761)
>		gnt = BGE_APE_LOCK_GRANT;
>	else
>		gnt = BGE_APE_PER_LOCK_GRANT;
>
>	off = 4 * locknum;
>
>	switch (locknum) {
>	case BGE_APE_LOCK_GPIO:
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5761)
>			return;
>		if (sc->bge_func_addr == 0)
>			bit = BGE_APE_LOCK_GRANT_DRIVER0;
>		else
>			bit = (1 << sc->bge_func_addr);
>		break;
>	case BGE_APE_LOCK_GRC:
>		if (sc->bge_func_addr == 0)
>			bit = BGE_APE_LOCK_GRANT_DRIVER0;
>		else
>			bit = (1 << sc->bge_func_addr);
>		break;
>	case BGE_APE_LOCK_MEM:
>		if (sc->bge_func_addr == 0)
>			bit = BGE_APE_LOCK_GRANT_DRIVER0;
>		else
>			bit = (1 << sc->bge_func_addr);
>		break;
>	case BGE_APE_LOCK_PHY0:
>	case BGE_APE_LOCK_PHY1:
>	case BGE_APE_LOCK_PHY2:
>	case BGE_APE_LOCK_PHY3:
>		bit = BGE_APE_LOCK_GRANT_DRIVER0;
>		break;
>	default:
>		return;
>	}
>
>	APE_WRITE_4(sc, gnt + off, bit);
>}
>
>/*
> * Send an event to the APE firmware.
> */
>static void
>bge_ape_send_event(struct bge_softc *sc, uint32_t event)
>{
>	uint32_t apedata;
>	int i;
>
>	/* NCSI does not support APE events. */
>	if ((sc->bge_mfw_flags & BGE_MFW_ON_APE) == 0)
>		return;
>
>	/* Wait up to 1ms for APE to service previous event. */
>	for (i = 10; i > 0; i--) {
>		if (bge_ape_lock(sc, BGE_APE_LOCK_MEM) != 0)
>			break;
>		apedata = APE_READ_4(sc, BGE_APE_EVENT_STATUS);
>		if ((apedata & BGE_APE_EVENT_STATUS_EVENT_PENDING) == 0) {
>			APE_WRITE_4(sc, BGE_APE_EVENT_STATUS, event |
>			    BGE_APE_EVENT_STATUS_EVENT_PENDING);
>			bge_ape_unlock(sc, BGE_APE_LOCK_MEM);
>			APE_WRITE_4(sc, BGE_APE_EVENT, BGE_APE_EVENT_1);
>			break;
>		}
>		bge_ape_unlock(sc, BGE_APE_LOCK_MEM);
>		DELAY(100);
>	}
>	if (i == 0)
>		device_printf(sc->bge_dev, "APE event 0x%08x send timed out\n",
>		    event);
>}
>
>static void
>bge_ape_driver_state_change(struct bge_softc *sc, int kind)
>{
>	uint32_t apedata, event;
>
>	if ((sc->bge_mfw_flags & BGE_MFW_ON_APE) == 0)
>		return;
>
>	switch (kind) {
>	case BGE_RESET_START:
>		/* If this is the first load, clear the load counter. */
>		apedata = APE_READ_4(sc, BGE_APE_HOST_SEG_SIG);
>		if (apedata != BGE_APE_HOST_SEG_SIG_MAGIC)
>			APE_WRITE_4(sc, BGE_APE_HOST_INIT_COUNT, 0);
>		else {
>			apedata = APE_READ_4(sc, BGE_APE_HOST_INIT_COUNT);
>			APE_WRITE_4(sc, BGE_APE_HOST_INIT_COUNT, ++apedata);
>		}
>		APE_WRITE_4(sc, BGE_APE_HOST_SEG_SIG,
>		    BGE_APE_HOST_SEG_SIG_MAGIC);
>		APE_WRITE_4(sc, BGE_APE_HOST_SEG_LEN,
>		    BGE_APE_HOST_SEG_LEN_MAGIC);
>
>		/* Add some version info if bge(4) supports it. */
>		APE_WRITE_4(sc, BGE_APE_HOST_DRIVER_ID,
>		    BGE_APE_HOST_DRIVER_ID_MAGIC(1, 0));
>		APE_WRITE_4(sc, BGE_APE_HOST_BEHAVIOR,
>		    BGE_APE_HOST_BEHAV_NO_PHYLOCK);
>		APE_WRITE_4(sc, BGE_APE_HOST_HEARTBEAT_INT_MS,
>		    BGE_APE_HOST_HEARTBEAT_INT_DISABLE);
>		APE_WRITE_4(sc, BGE_APE_HOST_DRVR_STATE,
>		    BGE_APE_HOST_DRVR_STATE_START);
>		event = BGE_APE_EVENT_STATUS_STATE_START;
>		break;
>	case BGE_RESET_SHUTDOWN:
>		APE_WRITE_4(sc, BGE_APE_HOST_DRVR_STATE,
>		    BGE_APE_HOST_DRVR_STATE_UNLOAD);
>		event = BGE_APE_EVENT_STATUS_STATE_UNLOAD;
>		break;
>	case BGE_RESET_SUSPEND:
>		event = BGE_APE_EVENT_STATUS_STATE_SUSPEND;
>		break;
>	default:
>		return;
>	}
>
>	bge_ape_send_event(sc, event | BGE_APE_EVENT_STATUS_DRIVER_EVNT |
>	    BGE_APE_EVENT_STATUS_STATE_CHNGE);
>}
>
>/*
> * Map a single buffer address.
> */
>
>static void
>bge_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
>{
>	struct bge_dmamap_arg *ctx;
>
>	if (error)
>		return;
>
>	KASSERT(nseg == 1, ("%s: %d segments returned!", __func__, nseg));
>
>	ctx = arg;
>	ctx->bge_busaddr = segs->ds_addr;
>}
>
>static uint8_t
>bge_nvram_getbyte(struct bge_softc *sc, int addr, uint8_t *dest)
>{
>	uint32_t access, byte = 0;
>	int i;
>
>	/* Lock. */
>	CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
>	for (i = 0; i < 8000; i++) {
>		if (CSR_READ_4(sc, BGE_NVRAM_SWARB) & BGE_NVRAMSWARB_GNT1)
>			break;
>		DELAY(20);
>	}
>	if (i == 8000)
>		return (1);
>
>	/* Enable access. */
>	access = CSR_READ_4(sc, BGE_NVRAM_ACCESS);
>	CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access | BGE_NVRAMACC_ENABLE);
>
>	CSR_WRITE_4(sc, BGE_NVRAM_ADDR, addr & 0xfffffffc);
>	CSR_WRITE_4(sc, BGE_NVRAM_CMD, BGE_NVRAM_READCMD);
>	for (i = 0; i < BGE_TIMEOUT * 10; i++) {
>		DELAY(10);
>		if (CSR_READ_4(sc, BGE_NVRAM_CMD) & BGE_NVRAMCMD_DONE) {
>			DELAY(10);
>			break;
>		}
>	}
>
>	if (i == BGE_TIMEOUT * 10) {
>		if_printf(sc->bge_ifp, "nvram read timed out\n");
>		return (1);
>	}
>
>	/* Get result. */
>	byte = CSR_READ_4(sc, BGE_NVRAM_RDDATA);
>
>	*dest = (bswap32(byte) >> ((addr % 4) * 8)) & 0xFF;
>
>	/* Disable access. */
>	CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access);
>
>	/* Unlock. */
>	CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_CLR1);
>	CSR_READ_4(sc, BGE_NVRAM_SWARB);
>
>	return (0);
>}
>
>/*
> * Read a sequence of bytes from NVRAM.
> */
>static int
>bge_read_nvram(struct bge_softc *sc, caddr_t dest, int off, int cnt)
>{
>	int err = 0, i;
>	uint8_t byte = 0;
>
>	if (sc->bge_asicrev != BGE_ASICREV_BCM5906)
>		return (1);
>
>	for (i = 0; i < cnt; i++) {
>		err = bge_nvram_getbyte(sc, off + i, &byte);
>		if (err)
>			break;
>		*(dest + i) = byte;
>	}
>
>	return (err ? 1 : 0);
>}
>
>/*
> * Read a byte of data stored in the EEPROM at address 'addr.' The
> * BCM570x supports both the traditional bitbang interface and an
> * auto access interface for reading the EEPROM. We use the auto
> * access method.
> */
>static uint8_t
>bge_eeprom_getbyte(struct bge_softc *sc, int addr, uint8_t *dest)
>{
>	int i;
>	uint32_t byte = 0;
>
>	/*
>	 * Enable use of auto EEPROM access so we can avoid
>	 * having to use the bitbang method.
>	 */
>	BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
>
>	/* Reset the EEPROM, load the clock period. */
>	CSR_WRITE_4(sc, BGE_EE_ADDR,
>	    BGE_EEADDR_RESET | BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
>	DELAY(20);
>
>	/* Issue the read EEPROM command. */
>	CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
>
>	/* Wait for completion */
>	for(i = 0; i < BGE_TIMEOUT * 10; i++) {
>		DELAY(10);
>		if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
>			break;
>	}
>
>	if (i == BGE_TIMEOUT * 10) {
>		device_printf(sc->bge_dev, "EEPROM read timed out\n");
>		return (1);
>	}
>
>	/* Get result. */
>	byte = CSR_READ_4(sc, BGE_EE_DATA);
>
>	*dest = (byte >> ((addr % 4) * 8)) & 0xFF;
>
>	return (0);
>}
>
>/*
> * Read a sequence of bytes from the EEPROM.
> */
>static int
>bge_read_eeprom(struct bge_softc *sc, caddr_t dest, int off, int cnt)
>{
>	int i, error = 0;
>	uint8_t byte = 0;
>
>	for (i = 0; i < cnt; i++) {
>		error = bge_eeprom_getbyte(sc, off + i, &byte);
>		if (error)
>			break;
>		*(dest + i) = byte;
>	}
>
>	return (error ? 1 : 0);
>}
>
>static int
>bge_miibus_readreg(device_t dev, int phy, int reg)
>{
>	struct bge_softc *sc;
>	uint32_t val;
>	int i;
>
>	sc = device_get_softc(dev);
>
>	if (bge_ape_lock(sc, sc->bge_phy_ape_lock) != 0)
>		return (0);
>
>	/* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
>	if ((sc->bge_mi_mode & BGE_MIMODE_AUTOPOLL) != 0) {
>		CSR_WRITE_4(sc, BGE_MI_MODE,
>		    sc->bge_mi_mode & ~BGE_MIMODE_AUTOPOLL);
>		DELAY(80);
>	}
>
>	CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ | BGE_MICOMM_BUSY |
>	    BGE_MIPHY(phy) | BGE_MIREG(reg));
>
>	/* Poll for the PHY register access to complete. */
>	for (i = 0; i < BGE_TIMEOUT; i++) {
>		DELAY(10);
>		val = CSR_READ_4(sc, BGE_MI_COMM);
>		if ((val & BGE_MICOMM_BUSY) == 0) {
>			DELAY(5);
>			val = CSR_READ_4(sc, BGE_MI_COMM);
>			break;
>		}
>	}
>
>	if (i == BGE_TIMEOUT) {
>		device_printf(sc->bge_dev,
>		    "PHY read timed out (phy %d, reg %d, val 0x%08x)\n",
>		    phy, reg, val);
>		val = 0;
>	}
>
>	/* Restore the autopoll bit if necessary. */
>	if ((sc->bge_mi_mode & BGE_MIMODE_AUTOPOLL) != 0) {
>		CSR_WRITE_4(sc, BGE_MI_MODE, sc->bge_mi_mode);
>		DELAY(80);
>	}
>
>	bge_ape_unlock(sc, sc->bge_phy_ape_lock);
>
>	if (val & BGE_MICOMM_READFAIL)
>		return (0);
>
>	return (val & 0xFFFF);
>}
>
>static int
>bge_miibus_writereg(device_t dev, int phy, int reg, int val)
>{
>	struct bge_softc *sc;
>	int i;
>
>	sc = device_get_softc(dev);
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906 &&
>	    (reg == BRGPHY_MII_1000CTL || reg == BRGPHY_MII_AUXCTL))
>		return (0);
>
>	if (bge_ape_lock(sc, sc->bge_phy_ape_lock) != 0)
>		return (0);
>
>	/* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
>	if ((sc->bge_mi_mode & BGE_MIMODE_AUTOPOLL) != 0) {
>		CSR_WRITE_4(sc, BGE_MI_MODE,
>		    sc->bge_mi_mode & ~BGE_MIMODE_AUTOPOLL);
>		DELAY(80);
>	}
>
>	CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE | BGE_MICOMM_BUSY |
>	    BGE_MIPHY(phy) | BGE_MIREG(reg) | val);
>
>	for (i = 0; i < BGE_TIMEOUT; i++) {
>		DELAY(10);
>		if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) {
>			DELAY(5);
>			CSR_READ_4(sc, BGE_MI_COMM); /* dummy read */
>			break;
>		}
>	}
>
>	/* Restore the autopoll bit if necessary. */
>	if ((sc->bge_mi_mode & BGE_MIMODE_AUTOPOLL) != 0) {
>		CSR_WRITE_4(sc, BGE_MI_MODE, sc->bge_mi_mode);
>		DELAY(80);
>	}
>
>	bge_ape_unlock(sc, sc->bge_phy_ape_lock);
>
>	if (i == BGE_TIMEOUT)
>		device_printf(sc->bge_dev,
>		    "PHY write timed out (phy %d, reg %d, val 0x%04x)\n",
>		    phy, reg, val);
>
>	return (0);
>}
>
>static void
>bge_miibus_statchg(device_t dev)
>{
>	struct bge_softc *sc;
>	struct mii_data *mii;
>	uint32_t mac_mode, rx_mode, tx_mode;
>
>	sc = device_get_softc(dev);
>	if ((if_getdrvflags(sc->bge_ifp) & IFF_DRV_RUNNING) == 0)
>		return;
>	mii = device_get_softc(sc->bge_miibus);
>
>	if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
>	    (IFM_ACTIVE | IFM_AVALID)) {
>		switch (IFM_SUBTYPE(mii->mii_media_active)) {
>		case IFM_10_T:
>		case IFM_100_TX:
>			sc->bge_link = 1;
>			break;
>		case IFM_1000_T:
>		case IFM_1000_SX:
>		case IFM_2500_SX:
>			if (sc->bge_asicrev != BGE_ASICREV_BCM5906)
>				sc->bge_link = 1;
>			else
>				sc->bge_link = 0;
>			break;
>		default:
>			sc->bge_link = 0;
>			break;
>		}
>	} else
>		sc->bge_link = 0;
>	if (sc->bge_link == 0)
>		return;
>
>	/*
>	 * APE firmware touches these registers to keep the MAC
>	 * connected to the outside world.  Try to keep the
>	 * accesses atomic.
>	 */
>
>	/* Set the port mode (MII/GMII) to match the link speed. */
>	mac_mode = CSR_READ_4(sc, BGE_MAC_MODE) &
>	    ~(BGE_MACMODE_PORTMODE | BGE_MACMODE_HALF_DUPLEX);
>	tx_mode = CSR_READ_4(sc, BGE_TX_MODE);
>	rx_mode = CSR_READ_4(sc, BGE_RX_MODE);
>
>	if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
>	    IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)
>		mac_mode |= BGE_PORTMODE_GMII;
>	else
>		mac_mode |= BGE_PORTMODE_MII;
>
>	/* Set MAC flow control behavior to match link flow control settings. */
>	tx_mode &= ~BGE_TXMODE_FLOWCTL_ENABLE;
>	rx_mode &= ~BGE_RXMODE_FLOWCTL_ENABLE;
>	if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
>		if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
>			tx_mode |= BGE_TXMODE_FLOWCTL_ENABLE;
>		if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
>			rx_mode |= BGE_RXMODE_FLOWCTL_ENABLE;
>	} else
>		mac_mode |= BGE_MACMODE_HALF_DUPLEX;
>
>	CSR_WRITE_4(sc, BGE_MAC_MODE, mac_mode);
>	DELAY(40);
>	CSR_WRITE_4(sc, BGE_TX_MODE, tx_mode);
>	CSR_WRITE_4(sc, BGE_RX_MODE, rx_mode);
>}
>
>/*
> * Intialize a standard receive ring descriptor.
> */
>static int
>bge_newbuf_std(struct bge_softc *sc, int i)
>{
>	struct mbuf *m;
>	struct bge_rx_bd *r;
>	bus_dma_segment_t segs[1];
>	bus_dmamap_t map;
>	int error, nsegs;
>
>	if (sc->bge_flags & BGE_FLAG_JUMBO_STD &&
>	    (if_getmtu(sc->bge_ifp) + ETHER_HDR_LEN + ETHER_CRC_LEN +
>	    ETHER_VLAN_ENCAP_LEN > (MCLBYTES - ETHER_ALIGN))) {
>		m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUM9BYTES);
>		if (m == NULL)
>			return (ENOBUFS);
>		m->m_len = m->m_pkthdr.len = MJUM9BYTES;
>	} else {
>		m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
>		if (m == NULL)
>			return (ENOBUFS);
>		m->m_len = m->m_pkthdr.len = MCLBYTES;
>	}
>	if ((sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) == 0)
>		m_adj(m, ETHER_ALIGN);
>
>	error = bus_dmamap_load_mbuf_sg(sc->bge_cdata.bge_rx_mtag,
>	    sc->bge_cdata.bge_rx_std_sparemap, m, segs, &nsegs, 0);
>	if (error != 0) {
>		m_freem(m);
>		return (error);
>	}
>	if (sc->bge_cdata.bge_rx_std_chain[i] != NULL) {
>		bus_dmamap_sync(sc->bge_cdata.bge_rx_mtag,
>		    sc->bge_cdata.bge_rx_std_dmamap[i], BUS_DMASYNC_POSTREAD);
>		bus_dmamap_unload(sc->bge_cdata.bge_rx_mtag,
>		    sc->bge_cdata.bge_rx_std_dmamap[i]);
>	}
>	map = sc->bge_cdata.bge_rx_std_dmamap[i];
>	sc->bge_cdata.bge_rx_std_dmamap[i] = sc->bge_cdata.bge_rx_std_sparemap;
>	sc->bge_cdata.bge_rx_std_sparemap = map;
>	sc->bge_cdata.bge_rx_std_chain[i] = m;
>	sc->bge_cdata.bge_rx_std_seglen[i] = segs[0].ds_len;
>	r = &sc->bge_ldata.bge_rx_std_ring[sc->bge_std];
>	r->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[0].ds_addr);
>	r->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[0].ds_addr);
>	r->bge_flags = BGE_RXBDFLAG_END;
>	r->bge_len = segs[0].ds_len;
>	r->bge_idx = i;
>
>	bus_dmamap_sync(sc->bge_cdata.bge_rx_mtag,
>	    sc->bge_cdata.bge_rx_std_dmamap[i], BUS_DMASYNC_PREREAD);
>
>	return (0);
>}
>
>/*
> * Initialize a jumbo receive ring descriptor. This allocates
> * a jumbo buffer from the pool managed internally by the driver.
> */
>static int
>bge_newbuf_jumbo(struct bge_softc *sc, int i)
>{
>	bus_dma_segment_t segs[BGE_NSEG_JUMBO];
>	bus_dmamap_t map;
>	struct bge_extrx_bd *r;
>	struct mbuf *m;
>	int error, nsegs;
>
>	MGETHDR(m, M_NOWAIT, MT_DATA);
>	if (m == NULL)
>		return (ENOBUFS);
>
>	if (m_cljget(m, M_NOWAIT, MJUM9BYTES) == NULL) {
>		m_freem(m);
>		return (ENOBUFS);
>	}
>	m->m_len = m->m_pkthdr.len = MJUM9BYTES;
>	if ((sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) == 0)
>		m_adj(m, ETHER_ALIGN);
>
>	error = bus_dmamap_load_mbuf_sg(sc->bge_cdata.bge_mtag_jumbo,
>	    sc->bge_cdata.bge_rx_jumbo_sparemap, m, segs, &nsegs, 0);
>	if (error != 0) {
>		m_freem(m);
>		return (error);
>	}
>
>	if (sc->bge_cdata.bge_rx_jumbo_chain[i] != NULL) {
>		bus_dmamap_sync(sc->bge_cdata.bge_mtag_jumbo,
>		    sc->bge_cdata.bge_rx_jumbo_dmamap[i], BUS_DMASYNC_POSTREAD);
>		bus_dmamap_unload(sc->bge_cdata.bge_mtag_jumbo,
>		    sc->bge_cdata.bge_rx_jumbo_dmamap[i]);
>	}
>	map = sc->bge_cdata.bge_rx_jumbo_dmamap[i];
>	sc->bge_cdata.bge_rx_jumbo_dmamap[i] =
>	    sc->bge_cdata.bge_rx_jumbo_sparemap;
>	sc->bge_cdata.bge_rx_jumbo_sparemap = map;
>	sc->bge_cdata.bge_rx_jumbo_chain[i] = m;
>	sc->bge_cdata.bge_rx_jumbo_seglen[i][0] = 0;
>	sc->bge_cdata.bge_rx_jumbo_seglen[i][1] = 0;
>	sc->bge_cdata.bge_rx_jumbo_seglen[i][2] = 0;
>	sc->bge_cdata.bge_rx_jumbo_seglen[i][3] = 0;
>
>	/*
>	 * Fill in the extended RX buffer descriptor.
>	 */
>	r = &sc->bge_ldata.bge_rx_jumbo_ring[sc->bge_jumbo];
>	r->bge_flags = BGE_RXBDFLAG_JUMBO_RING | BGE_RXBDFLAG_END;
>	r->bge_idx = i;
>	r->bge_len3 = r->bge_len2 = r->bge_len1 = 0;
>	switch (nsegs) {
>	case 4:
>		r->bge_addr3.bge_addr_lo = BGE_ADDR_LO(segs[3].ds_addr);
>		r->bge_addr3.bge_addr_hi = BGE_ADDR_HI(segs[3].ds_addr);
>		r->bge_len3 = segs[3].ds_len;
>		sc->bge_cdata.bge_rx_jumbo_seglen[i][3] = segs[3].ds_len;
>	case 3:
>		r->bge_addr2.bge_addr_lo = BGE_ADDR_LO(segs[2].ds_addr);
>		r->bge_addr2.bge_addr_hi = BGE_ADDR_HI(segs[2].ds_addr);
>		r->bge_len2 = segs[2].ds_len;
>		sc->bge_cdata.bge_rx_jumbo_seglen[i][2] = segs[2].ds_len;
>	case 2:
>		r->bge_addr1.bge_addr_lo = BGE_ADDR_LO(segs[1].ds_addr);
>		r->bge_addr1.bge_addr_hi = BGE_ADDR_HI(segs[1].ds_addr);
>		r->bge_len1 = segs[1].ds_len;
>		sc->bge_cdata.bge_rx_jumbo_seglen[i][1] = segs[1].ds_len;
>	case 1:
>		r->bge_addr0.bge_addr_lo = BGE_ADDR_LO(segs[0].ds_addr);
>		r->bge_addr0.bge_addr_hi = BGE_ADDR_HI(segs[0].ds_addr);
>		r->bge_len0 = segs[0].ds_len;
>		sc->bge_cdata.bge_rx_jumbo_seglen[i][0] = segs[0].ds_len;
>		break;
>	default:
>		panic("%s: %d segments\n", __func__, nsegs);
>	}
>
>	bus_dmamap_sync(sc->bge_cdata.bge_mtag_jumbo,
>	    sc->bge_cdata.bge_rx_jumbo_dmamap[i], BUS_DMASYNC_PREREAD);
>
>	return (0);
>}
>
>static int
>bge_init_rx_ring_std(struct bge_softc *sc)
>{
>	int error, i;
>
>	bzero(sc->bge_ldata.bge_rx_std_ring, BGE_STD_RX_RING_SZ);
>	sc->bge_std = 0;
>	for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
>		if ((error = bge_newbuf_std(sc, i)) != 0)
>			return (error);
>		BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
>	}
>
>	bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
>	    sc->bge_cdata.bge_rx_std_ring_map, BUS_DMASYNC_PREWRITE);
>
>	sc->bge_std = 0;
>	bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, BGE_STD_RX_RING_CNT - 1);
>
>	return (0);
>}
>
>static void
>bge_free_rx_ring_std(struct bge_softc *sc)
>{
>	int i;
>
>	for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
>		if (sc->bge_cdata.bge_rx_std_chain[i] != NULL) {
>			bus_dmamap_sync(sc->bge_cdata.bge_rx_mtag,
>			    sc->bge_cdata.bge_rx_std_dmamap[i],
>			    BUS_DMASYNC_POSTREAD);
>			bus_dmamap_unload(sc->bge_cdata.bge_rx_mtag,
>			    sc->bge_cdata.bge_rx_std_dmamap[i]);
>			m_freem(sc->bge_cdata.bge_rx_std_chain[i]);
>			sc->bge_cdata.bge_rx_std_chain[i] = NULL;
>		}
>		bzero((char *)&sc->bge_ldata.bge_rx_std_ring[i],
>		    sizeof(struct bge_rx_bd));
>	}
>}
>
>static int
>bge_init_rx_ring_jumbo(struct bge_softc *sc)
>{
>	struct bge_rcb *rcb;
>	int error, i;
>
>	bzero(sc->bge_ldata.bge_rx_jumbo_ring, BGE_JUMBO_RX_RING_SZ);
>	sc->bge_jumbo = 0;
>	for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
>		if ((error = bge_newbuf_jumbo(sc, i)) != 0)
>			return (error);
>		BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
>	}
>
>	bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
>	    sc->bge_cdata.bge_rx_jumbo_ring_map, BUS_DMASYNC_PREWRITE);
>
>	sc->bge_jumbo = 0;
>
>	/* Enable the jumbo receive producer ring. */
>	rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
>	rcb->bge_maxlen_flags =
>	    BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_USE_EXT_RX_BD);
>	CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
>
>	bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, BGE_JUMBO_RX_RING_CNT - 1);
>
>	return (0);
>}
>
>static void
>bge_free_rx_ring_jumbo(struct bge_softc *sc)
>{
>	int i;
>
>	for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
>		if (sc->bge_cdata.bge_rx_jumbo_chain[i] != NULL) {
>			bus_dmamap_sync(sc->bge_cdata.bge_mtag_jumbo,
>			    sc->bge_cdata.bge_rx_jumbo_dmamap[i],
>			    BUS_DMASYNC_POSTREAD);
>			bus_dmamap_unload(sc->bge_cdata.bge_mtag_jumbo,
>			    sc->bge_cdata.bge_rx_jumbo_dmamap[i]);
>			m_freem(sc->bge_cdata.bge_rx_jumbo_chain[i]);
>			sc->bge_cdata.bge_rx_jumbo_chain[i] = NULL;
>		}
>		bzero((char *)&sc->bge_ldata.bge_rx_jumbo_ring[i],
>		    sizeof(struct bge_extrx_bd));
>	}
>}
>
>static void
>bge_free_tx_ring(struct bge_softc *sc)
>{
>	int i;
>
>	if (sc->bge_ldata.bge_tx_ring == NULL)
>		return;
>
>	for (i = 0; i < BGE_TX_RING_CNT; i++) {
>		if (sc->bge_cdata.bge_tx_chain[i] != NULL) {
>			bus_dmamap_sync(sc->bge_cdata.bge_tx_mtag,
>			    sc->bge_cdata.bge_tx_dmamap[i],
>			    BUS_DMASYNC_POSTWRITE);
>			bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag,
>			    sc->bge_cdata.bge_tx_dmamap[i]);
>			m_freem(sc->bge_cdata.bge_tx_chain[i]);
>			sc->bge_cdata.bge_tx_chain[i] = NULL;
>		}
>		bzero((char *)&sc->bge_ldata.bge_tx_ring[i],
>		    sizeof(struct bge_tx_bd));
>	}
>}
>
>static int
>bge_init_tx_ring(struct bge_softc *sc)
>{
>	sc->bge_txcnt = 0;
>	sc->bge_tx_saved_considx = 0;
>
>	bzero(sc->bge_ldata.bge_tx_ring, BGE_TX_RING_SZ);
>	bus_dmamap_sync(sc->bge_cdata.bge_tx_ring_tag,
>	    sc->bge_cdata.bge_tx_ring_map, BUS_DMASYNC_PREWRITE);
>
>	/* Initialize transmit producer index for host-memory send ring. */
>	sc->bge_tx_prodidx = 0;
>	bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx);
>
>	/* 5700 b2 errata */
>	if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
>		bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx);
>
>	/* NIC-memory send ring not used; initialize to zero. */
>	bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
>	/* 5700 b2 errata */
>	if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
>		bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
>
>	return (0);
>}
>
>static void
>bge_setpromisc(struct bge_softc *sc)
>{
>	if_t ifp;
>
>	BGE_LOCK_ASSERT(sc);
>
>	ifp = sc->bge_ifp;
>
>	/* Enable or disable promiscuous mode as needed. */
>	if (if_getflags(ifp) & IFF_PROMISC)
>		BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
>	else
>		BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
>}
>
>static void
>bge_setmulti(struct bge_softc *sc)
>{
>	if_t ifp;
>	int mc_count = 0;
>	uint32_t hashes[4] = { 0, 0, 0, 0 };
>	int h, i, mcnt;
>	unsigned char *mta;
>
>	BGE_LOCK_ASSERT(sc);
>
>	ifp = sc->bge_ifp;
>
>	mc_count = if_multiaddr_count(ifp, -1);
>	mta = malloc(sizeof(unsigned char) *  ETHER_ADDR_LEN *
>	    mc_count, M_DEVBUF, M_NOWAIT);
>
>	if(mta == NULL) {
>		device_printf(sc->bge_dev, 
>		    "Failed to allocated temp mcast list\n");
>		return;
>	}
>
>	if (if_getflags(ifp) & IFF_ALLMULTI || if_getflags(ifp) & IFF_PROMISC) {
>		for (i = 0; i < 4; i++)
>			CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
>		free(mta, M_DEVBUF);
>		return;
>	}
>
>	/* First, zot all the existing filters. */
>	for (i = 0; i < 4; i++)
>		CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
>
>	if_multiaddr_array(ifp, mta, &mcnt, mc_count);
>	for(i = 0; i < mcnt; i++) {
>		h = ether_crc32_le(mta + (i * ETHER_ADDR_LEN),
>		    ETHER_ADDR_LEN) & 0x7F;
>		hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
>	}
>
>	for (i = 0; i < 4; i++)
>		CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
>
>	free(mta, M_DEVBUF);
>}
>
>static void
>bge_setvlan(struct bge_softc *sc)
>{
>	if_t ifp;
>
>	BGE_LOCK_ASSERT(sc);
>
>	ifp = sc->bge_ifp;
>
>	/* Enable or disable VLAN tag stripping as needed. */
>	if (if_getcapenable(ifp) & IFCAP_VLAN_HWTAGGING)
>		BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_KEEP_VLAN_DIAG);
>	else
>		BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_KEEP_VLAN_DIAG);
>}
>
>static void
>bge_sig_pre_reset(struct bge_softc *sc, int type)
>{
>
>	/*
>	 * Some chips don't like this so only do this if ASF is enabled
>	 */
>	if (sc->bge_asf_mode)
>		bge_writemem_ind(sc, BGE_SRAM_FW_MB, BGE_SRAM_FW_MB_MAGIC);
>
>	if (sc->bge_asf_mode & ASF_NEW_HANDSHAKE) {
>		switch (type) {
>		case BGE_RESET_START:
>			bge_writemem_ind(sc, BGE_SRAM_FW_DRV_STATE_MB,
>			    BGE_FW_DRV_STATE_START);
>			break;
>		case BGE_RESET_SHUTDOWN:
>			bge_writemem_ind(sc, BGE_SRAM_FW_DRV_STATE_MB,
>			    BGE_FW_DRV_STATE_UNLOAD);
>			break;
>		case BGE_RESET_SUSPEND:
>			bge_writemem_ind(sc, BGE_SRAM_FW_DRV_STATE_MB,
>			    BGE_FW_DRV_STATE_SUSPEND);
>			break;
>		}
>	}
>
>	if (type == BGE_RESET_START || type == BGE_RESET_SUSPEND)
>		bge_ape_driver_state_change(sc, type);
>}
>
>static void
>bge_sig_post_reset(struct bge_softc *sc, int type)
>{
>
>	if (sc->bge_asf_mode & ASF_NEW_HANDSHAKE) {
>		switch (type) {
>		case BGE_RESET_START:
>			bge_writemem_ind(sc, BGE_SRAM_FW_DRV_STATE_MB,
>			    BGE_FW_DRV_STATE_START_DONE);
>			/* START DONE */
>			break;
>		case BGE_RESET_SHUTDOWN:
>			bge_writemem_ind(sc, BGE_SRAM_FW_DRV_STATE_MB,
>			    BGE_FW_DRV_STATE_UNLOAD_DONE);
>			break;
>		}
>	}
>	if (type == BGE_RESET_SHUTDOWN)
>		bge_ape_driver_state_change(sc, type);
>}
>
>static void
>bge_sig_legacy(struct bge_softc *sc, int type)
>{
>
>	if (sc->bge_asf_mode) {
>		switch (type) {
>		case BGE_RESET_START:
>			bge_writemem_ind(sc, BGE_SRAM_FW_DRV_STATE_MB,
>			    BGE_FW_DRV_STATE_START);
>			break;
>		case BGE_RESET_SHUTDOWN:
>			bge_writemem_ind(sc, BGE_SRAM_FW_DRV_STATE_MB,
>			    BGE_FW_DRV_STATE_UNLOAD);
>			break;
>		}
>	}
>}
>
>static void
>bge_stop_fw(struct bge_softc *sc)
>{
>	int i;
>
>	if (sc->bge_asf_mode) {
>		bge_writemem_ind(sc, BGE_SRAM_FW_CMD_MB, BGE_FW_CMD_PAUSE);
>		CSR_WRITE_4(sc, BGE_RX_CPU_EVENT,
>		    CSR_READ_4(sc, BGE_RX_CPU_EVENT) | BGE_RX_CPU_DRV_EVENT);
>
>		for (i = 0; i < 100; i++ ) {
>			if (!(CSR_READ_4(sc, BGE_RX_CPU_EVENT) &
>			    BGE_RX_CPU_DRV_EVENT))
>				break;
>			DELAY(10);
>		}
>	}
>}
>
>static uint32_t
>bge_dma_swap_options(struct bge_softc *sc)
>{
>	uint32_t dma_options;
>
>	dma_options = BGE_MODECTL_WORDSWAP_NONFRAME |
>	    BGE_MODECTL_BYTESWAP_DATA | BGE_MODECTL_WORDSWAP_DATA;
>#if BYTE_ORDER == BIG_ENDIAN
>	dma_options |= BGE_MODECTL_BYTESWAP_NONFRAME;
>#endif
>	return (dma_options);
>}
>
>/*
> * Do endian, PCI and DMA initialization.
> */
>static int
>bge_chipinit(struct bge_softc *sc)
>{
>	uint32_t dma_rw_ctl, misc_ctl, mode_ctl;
>	uint16_t val;
>	int i;
>
>	/* Set endianness before we access any non-PCI registers. */
>	misc_ctl = BGE_INIT;
>	if (sc->bge_flags & BGE_FLAG_TAGGED_STATUS)
>		misc_ctl |= BGE_PCIMISCCTL_TAGGED_STATUS;
>	pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL, misc_ctl, 4);
>
>	/*
>	 * Clear the MAC statistics block in the NIC's
>	 * internal memory.
>	 */
>	for (i = BGE_STATS_BLOCK;
>	    i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t))
>		BGE_MEMWIN_WRITE(sc, i, 0);
>
>	for (i = BGE_STATUS_BLOCK;
>	    i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t))
>		BGE_MEMWIN_WRITE(sc, i, 0);
>
>	if (sc->bge_chiprev == BGE_CHIPREV_5704_BX) {
>		/*
>		 *  Fix data corruption caused by non-qword write with WB.
>		 *  Fix master abort in PCI mode.
>		 *  Fix PCI latency timer.
>		 */
>		val = pci_read_config(sc->bge_dev, BGE_PCI_MSI_DATA + 2, 2);
>		val |= (1 << 10) | (1 << 12) | (1 << 13);
>		pci_write_config(sc->bge_dev, BGE_PCI_MSI_DATA + 2, val, 2);
>	}
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM57765 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM57766) {
>		/*
>		 * For the 57766 and non Ax versions of 57765, bootcode
>		 * needs to setup the PCIE Fast Training Sequence (FTS)
>		 * value to prevent transmit hangs.
>		 */
>		if (sc->bge_chiprev != BGE_CHIPREV_57765_AX) {
>			CSR_WRITE_4(sc, BGE_CPMU_PADRNG_CTL,
>			    CSR_READ_4(sc, BGE_CPMU_PADRNG_CTL) |
>			    BGE_CPMU_PADRNG_CTL_RDIV2);
>		}
>	}
>
>	/*
>	 * Set up the PCI DMA control register.
>	 */
>	dma_rw_ctl = BGE_PCIDMARWCTL_RD_CMD_SHIFT(6) |
>	    BGE_PCIDMARWCTL_WR_CMD_SHIFT(7);
>	if (sc->bge_flags & BGE_FLAG_PCIE) {
>		if (sc->bge_mps >= 256)
>			dma_rw_ctl |= BGE_PCIDMARWCTL_WR_WAT_SHIFT(7);
>		else
>			dma_rw_ctl |= BGE_PCIDMARWCTL_WR_WAT_SHIFT(3);
>	} else if (sc->bge_flags & BGE_FLAG_PCIX) {
>		if (BGE_IS_5714_FAMILY(sc)) {
>			/* 256 bytes for read and write. */
>			dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(2) |
>			    BGE_PCIDMARWCTL_WR_WAT_SHIFT(2);
>			dma_rw_ctl |= (sc->bge_asicrev == BGE_ASICREV_BCM5780) ?
>			    BGE_PCIDMARWCTL_ONEDMA_ATONCE_GLOBAL :
>			    BGE_PCIDMARWCTL_ONEDMA_ATONCE_LOCAL;
>		} else if (sc->bge_asicrev == BGE_ASICREV_BCM5703) {
>			/*
>			 * In the BCM5703, the DMA read watermark should
>			 * be set to less than or equal to the maximum
>			 * memory read byte count of the PCI-X command
>			 * register.
>			 */
>			dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(4) |
>			    BGE_PCIDMARWCTL_WR_WAT_SHIFT(3);
>		} else if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
>			/* 1536 bytes for read, 384 bytes for write. */
>			dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(7) |
>			    BGE_PCIDMARWCTL_WR_WAT_SHIFT(3);
>		} else {
>			/* 384 bytes for read and write. */
>			dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(3) |
>			    BGE_PCIDMARWCTL_WR_WAT_SHIFT(3) |
>			    0x0F;
>		}
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5704) {
>			uint32_t tmp;
>
>			/* Set ONE_DMA_AT_ONCE for hardware workaround. */
>			tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1F;
>			if (tmp == 6 || tmp == 7)
>				dma_rw_ctl |=
>				    BGE_PCIDMARWCTL_ONEDMA_ATONCE_GLOBAL;
>
>			/* Set PCI-X DMA write workaround. */
>			dma_rw_ctl |= BGE_PCIDMARWCTL_ASRT_ALL_BE;
>		}
>	} else {
>		/* Conventional PCI bus: 256 bytes for read and write. */
>		dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(7) |
>		    BGE_PCIDMARWCTL_WR_WAT_SHIFT(7);
>
>		if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
>		    sc->bge_asicrev != BGE_ASICREV_BCM5750)
>			dma_rw_ctl |= 0x0F;
>	}
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5700 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5701)
>		dma_rw_ctl |= BGE_PCIDMARWCTL_USE_MRM |
>		    BGE_PCIDMARWCTL_ASRT_ALL_BE;
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5704)
>		dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA;
>	if (BGE_IS_5717_PLUS(sc)) {
>		dma_rw_ctl &= ~BGE_PCIDMARWCTL_DIS_CACHE_ALIGNMENT;
>		if (sc->bge_chipid == BGE_CHIPID_BCM57765_A0)
>			dma_rw_ctl &= ~BGE_PCIDMARWCTL_CRDRDR_RDMA_MRRS_MSK;
>		/*
>		 * Enable HW workaround for controllers that misinterpret
>		 * a status tag update and leave interrupts permanently
>		 * disabled.
>		 */
>		if (!BGE_IS_57765_PLUS(sc) &&
>		    sc->bge_asicrev != BGE_ASICREV_BCM5717 &&
>		    sc->bge_asicrev != BGE_ASICREV_BCM5762)
>			dma_rw_ctl |= BGE_PCIDMARWCTL_TAGGED_STATUS_WA;
>	}
>	pci_write_config(sc->bge_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
>
>	/*
>	 * Set up general mode register.
>	 */
>	mode_ctl = bge_dma_swap_options(sc);
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5720 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5762) {
>		/* Retain Host-2-BMC settings written by APE firmware. */
>		mode_ctl |= CSR_READ_4(sc, BGE_MODE_CTL) &
>		    (BGE_MODECTL_BYTESWAP_B2HRX_DATA |
>		    BGE_MODECTL_WORDSWAP_B2HRX_DATA |
>		    BGE_MODECTL_B2HRX_ENABLE | BGE_MODECTL_HTX2B_ENABLE);
>	}
>	mode_ctl |= BGE_MODECTL_MAC_ATTN_INTR | BGE_MODECTL_HOST_SEND_BDS |
>	    BGE_MODECTL_TX_NO_PHDR_CSUM;
>
>	/*
>	 * BCM5701 B5 have a bug causing data corruption when using
>	 * 64-bit DMA reads, which can be terminated early and then
>	 * completed later as 32-bit accesses, in combination with
>	 * certain bridges.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5701 &&
>	    sc->bge_chipid == BGE_CHIPID_BCM5701_B5)
>		mode_ctl |= BGE_MODECTL_FORCE_PCI32;
>
>	/*
>	 * Tell the firmware the driver is running
>	 */
>	if (sc->bge_asf_mode & ASF_STACKUP)
>		mode_ctl |= BGE_MODECTL_STACKUP;
>
>	CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
>
>	/*
>	 * Disable memory write invalidate.  Apparently it is not supported
>	 * properly by these devices.
>	 */
>	PCI_CLRBIT(sc->bge_dev, BGE_PCI_CMD, PCIM_CMD_MWIEN, 4);
>
>	/* Set the timer prescaler (always 66 MHz). */
>	CSR_WRITE_4(sc, BGE_MISC_CFG, BGE_32BITTIME_66MHZ);
>
>	/* XXX: The Linux tg3 driver does this at the start of brgphy_reset. */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
>		DELAY(40);	/* XXX */
>
>		/* Put PHY into ready state */
>		BGE_CLRBIT(sc, BGE_MISC_CFG, BGE_MISCCFG_EPHY_IDDQ);
>		CSR_READ_4(sc, BGE_MISC_CFG); /* Flush */
>		DELAY(40);
>	}
>
>	return (0);
>}
>
>static int
>bge_blockinit(struct bge_softc *sc)
>{
>	struct bge_rcb *rcb;
>	bus_size_t vrcb;
>	bge_hostaddr taddr;
>	uint32_t dmactl, rdmareg, val;
>	int i, limit;
>
>	/*
>	 * Initialize the memory window pointer register so that
>	 * we can access the first 32K of internal NIC RAM. This will
>	 * allow us to set up the TX send ring RCBs and the RX return
>	 * ring RCBs, plus other things which live in NIC memory.
>	 */
>	CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
>
>	/* Note: the BCM5704 has a smaller mbuf space than other chips. */
>
>	if (!(BGE_IS_5705_PLUS(sc))) {
>		/* Configure mbuf memory pool */
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR, BGE_BUFFPOOL_1);
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
>			CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
>		else
>			CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
>
>		/* Configure DMA resource pool */
>		CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR,
>		    BGE_DMA_DESCRIPTORS);
>		CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000);
>	}
>
>	/* Configure mbuf pool watermarks */
>	if (BGE_IS_5717_PLUS(sc)) {
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
>		if (if_getmtu(sc->bge_ifp) > ETHERMTU) {
>			CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x7e);
>			CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xea);
>		} else {
>			CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x2a);
>			CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xa0);
>		}
>	} else if (!BGE_IS_5705_PLUS(sc)) {
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50);
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20);
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
>	} else if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x04);
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x10);
>	} else {
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
>		CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
>	}
>
>	/* Configure DMA resource watermarks */
>	CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
>	CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
>
>	/* Enable buffer manager */
>	val = BGE_BMANMODE_ENABLE | BGE_BMANMODE_LOMBUF_ATTN;
>	/*
>	 * Change the arbitration algorithm of TXMBUF read request to
>	 * round-robin instead of priority based for BCM5719.  When
>	 * TXFIFO is almost empty, RDMA will hold its request until
>	 * TXFIFO is not almost empty.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5719)
>		val |= BGE_BMANMODE_NO_TX_UNDERRUN;
>	CSR_WRITE_4(sc, BGE_BMAN_MODE, val);
>
>	/* Poll for buffer manager start indication */
>	for (i = 0; i < BGE_TIMEOUT; i++) {
>		DELAY(10);
>		if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
>			break;
>	}
>
>	if (i == BGE_TIMEOUT) {
>		device_printf(sc->bge_dev, "buffer manager failed to start\n");
>		return (ENXIO);
>	}
>
>	/* Enable flow-through queues */
>	CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
>	CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
>
>	/* Wait until queue initialization is complete */
>	for (i = 0; i < BGE_TIMEOUT; i++) {
>		DELAY(10);
>		if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
>			break;
>	}
>
>	if (i == BGE_TIMEOUT) {
>		device_printf(sc->bge_dev, "flow-through queue init failed\n");
>		return (ENXIO);
>	}
>
>	/*
>	 * Summary of rings supported by the controller:
>	 *
>	 * Standard Receive Producer Ring
>	 * - This ring is used to feed receive buffers for "standard"
>	 *   sized frames (typically 1536 bytes) to the controller.
>	 *
>	 * Jumbo Receive Producer Ring
>	 * - This ring is used to feed receive buffers for jumbo sized
>	 *   frames (i.e. anything bigger than the "standard" frames)
>	 *   to the controller.
>	 *
>	 * Mini Receive Producer Ring
>	 * - This ring is used to feed receive buffers for "mini"
>	 *   sized frames to the controller.
>	 * - This feature required external memory for the controller
>	 *   but was never used in a production system.  Should always
>	 *   be disabled.
>	 *
>	 * Receive Return Ring
>	 * - After the controller has placed an incoming frame into a
>	 *   receive buffer that buffer is moved into a receive return
>	 *   ring.  The driver is then responsible to passing the
>	 *   buffer up to the stack.  Many versions of the controller
>	 *   support multiple RR rings.
>	 *
>	 * Send Ring
>	 * - This ring is used for outgoing frames.  Many versions of
>	 *   the controller support multiple send rings.
>	 */
>
>	/* Initialize the standard receive producer ring control block. */
>	rcb = &sc->bge_ldata.bge_info.bge_std_rx_rcb;
>	rcb->bge_hostaddr.bge_addr_lo =
>	    BGE_ADDR_LO(sc->bge_ldata.bge_rx_std_ring_paddr);
>	rcb->bge_hostaddr.bge_addr_hi =
>	    BGE_ADDR_HI(sc->bge_ldata.bge_rx_std_ring_paddr);
>	bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
>	    sc->bge_cdata.bge_rx_std_ring_map, BUS_DMASYNC_PREREAD);
>	if (BGE_IS_5717_PLUS(sc)) {
>		/*
>		 * Bits 31-16: Programmable ring size (2048, 1024, 512, .., 32)
>		 * Bits 15-2 : Maximum RX frame size
>		 * Bit 1     : 1 = Ring Disabled, 0 = Ring ENabled
>		 * Bit 0     : Reserved
>		 */
>		rcb->bge_maxlen_flags =
>		    BGE_RCB_MAXLEN_FLAGS(512, BGE_MAX_FRAMELEN << 2);
>	} else if (BGE_IS_5705_PLUS(sc)) {
>		/*
>		 * Bits 31-16: Programmable ring size (512, 256, 128, 64, 32)
>		 * Bits 15-2 : Reserved (should be 0)
>		 * Bit 1     : 1 = Ring Disabled, 0 = Ring Enabled
>		 * Bit 0     : Reserved
>		 */
>		rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
>	} else {
>		/*
>		 * Ring size is always XXX entries
>		 * Bits 31-16: Maximum RX frame size
>		 * Bits 15-2 : Reserved (should be 0)
>		 * Bit 1     : 1 = Ring Disabled, 0 = Ring Enabled
>		 * Bit 0     : Reserved
>		 */
>		rcb->bge_maxlen_flags =
>		    BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0);
>	}
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5717 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5719 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5720)
>		rcb->bge_nicaddr = BGE_STD_RX_RINGS_5717;
>	else
>		rcb->bge_nicaddr = BGE_STD_RX_RINGS;
>	/* Write the standard receive producer ring control block. */
>	CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
>	CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
>	CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
>	CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
>
>	/* Reset the standard receive producer ring producer index. */
>	bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, 0);
>
>	/*
>	 * Initialize the jumbo RX producer ring control
>	 * block.  We set the 'ring disabled' bit in the
>	 * flags field until we're actually ready to start
>	 * using this ring (i.e. once we set the MTU
>	 * high enough to require it).
>	 */
>	if (BGE_IS_JUMBO_CAPABLE(sc)) {
>		rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
>		/* Get the jumbo receive producer ring RCB parameters. */
>		rcb->bge_hostaddr.bge_addr_lo =
>		    BGE_ADDR_LO(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
>		rcb->bge_hostaddr.bge_addr_hi =
>		    BGE_ADDR_HI(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
>		bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
>		    sc->bge_cdata.bge_rx_jumbo_ring_map,
>		    BUS_DMASYNC_PREREAD);
>		rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0,
>		    BGE_RCB_FLAG_USE_EXT_RX_BD | BGE_RCB_FLAG_RING_DISABLED);
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5717 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5719 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5720)
>			rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS_5717;
>		else
>			rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
>		CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
>		    rcb->bge_hostaddr.bge_addr_hi);
>		CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
>		    rcb->bge_hostaddr.bge_addr_lo);
>		/* Program the jumbo receive producer ring RCB parameters. */
>		CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
>		    rcb->bge_maxlen_flags);
>		CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
>		/* Reset the jumbo receive producer ring producer index. */
>		bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
>	}
>
>	/* Disable the mini receive producer ring RCB. */
>	if (BGE_IS_5700_FAMILY(sc)) {
>		rcb = &sc->bge_ldata.bge_info.bge_mini_rx_rcb;
>		rcb->bge_maxlen_flags =
>		    BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
>		CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS,
>		    rcb->bge_maxlen_flags);
>		/* Reset the mini receive producer ring producer index. */
>		bge_writembx(sc, BGE_MBX_RX_MINI_PROD_LO, 0);
>	}
>
>	/* Choose de-pipeline mode for BCM5906 A0, A1 and A2. */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
>		if (sc->bge_chipid == BGE_CHIPID_BCM5906_A0 ||
>		    sc->bge_chipid == BGE_CHIPID_BCM5906_A1 ||
>		    sc->bge_chipid == BGE_CHIPID_BCM5906_A2)
>			CSR_WRITE_4(sc, BGE_ISO_PKT_TX,
>			    (CSR_READ_4(sc, BGE_ISO_PKT_TX) & ~3) | 2);
>	}
>	/*
>	 * The BD ring replenish thresholds control how often the
>	 * hardware fetches new BD's from the producer rings in host
>	 * memory.  Setting the value too low on a busy system can
>	 * starve the hardware and recue the throughpout.
>	 *
>	 * Set the BD ring replentish thresholds. The recommended
>	 * values are 1/8th the number of descriptors allocated to
>	 * each ring.
>	 * XXX The 5754 requires a lower threshold, so it might be a
>	 * requirement of all 575x family chips.  The Linux driver sets
>	 * the lower threshold for all 5705 family chips as well, but there
>	 * are reports that it might not need to be so strict.
>	 *
>	 * XXX Linux does some extra fiddling here for the 5906 parts as
>	 * well.
>	 */
>	if (BGE_IS_5705_PLUS(sc))
>		val = 8;
>	else
>		val = BGE_STD_RX_RING_CNT / 8;
>	CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, val);
>	if (BGE_IS_JUMBO_CAPABLE(sc))
>		CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH,
>		    BGE_JUMBO_RX_RING_CNT/8);
>	if (BGE_IS_5717_PLUS(sc)) {
>		CSR_WRITE_4(sc, BGE_STD_REPLENISH_LWM, 32);
>		CSR_WRITE_4(sc, BGE_JMB_REPLENISH_LWM, 16);
>	}
>
>	/*
>	 * Disable all send rings by setting the 'ring disabled' bit
>	 * in the flags field of all the TX send ring control blocks,
>	 * located in NIC memory.
>	 */
>	if (!BGE_IS_5705_PLUS(sc))
>		/* 5700 to 5704 had 16 send rings. */
>		limit = BGE_TX_RINGS_EXTSSRAM_MAX;
>	else if (BGE_IS_57765_PLUS(sc) ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5762)
>		limit = 2;
>	else if (BGE_IS_5717_PLUS(sc))
>		limit = 4;
>	else
>		limit = 1;
>	vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
>	for (i = 0; i < limit; i++) {
>		RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
>		    BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED));
>		RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
>		vrcb += sizeof(struct bge_rcb);
>	}
>
>	/* Configure send ring RCB 0 (we use only the first ring) */
>	vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
>	BGE_HOSTADDR(taddr, sc->bge_ldata.bge_tx_ring_paddr);
>	RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
>	RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5717 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5719 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5720)
>		RCB_WRITE_4(sc, vrcb, bge_nicaddr, BGE_SEND_RING_5717);
>	else
>		RCB_WRITE_4(sc, vrcb, bge_nicaddr,
>		    BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT));
>	RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
>	    BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0));
>
>	/*
>	 * Disable all receive return rings by setting the
>	 * 'ring diabled' bit in the flags field of all the receive
>	 * return ring control blocks, located in NIC memory.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5717 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5719 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5720) {
>		/* Should be 17, use 16 until we get an SRAM map. */
>		limit = 16;
>	} else if (!BGE_IS_5705_PLUS(sc))
>		limit = BGE_RX_RINGS_MAX;
>	else if (sc->bge_asicrev == BGE_ASICREV_BCM5755 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5762 ||
>	    BGE_IS_57765_PLUS(sc))
>		limit = 4;
>	else
>		limit = 1;
>	/* Disable all receive return rings. */
>	vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
>	for (i = 0; i < limit; i++) {
>		RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, 0);
>		RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, 0);
>		RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
>		    BGE_RCB_FLAG_RING_DISABLED);
>		RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
>		bge_writembx(sc, BGE_MBX_RX_CONS0_LO +
>		    (i * (sizeof(uint64_t))), 0);
>		vrcb += sizeof(struct bge_rcb);
>	}
>
>	/*
>	 * Set up receive return ring 0.  Note that the NIC address
>	 * for RX return rings is 0x0.  The return rings live entirely
>	 * within the host, so the nicaddr field in the RCB isn't used.
>	 */
>	vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
>	BGE_HOSTADDR(taddr, sc->bge_ldata.bge_rx_return_ring_paddr);
>	RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
>	RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
>	RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
>	RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
>	    BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0));
>
>	/* Set random backoff seed for TX */
>	CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
>	    (IF_LLADDR(sc->bge_ifp)[0] + IF_LLADDR(sc->bge_ifp)[1] +
>	    IF_LLADDR(sc->bge_ifp)[2] + IF_LLADDR(sc->bge_ifp)[3] +
>	    IF_LLADDR(sc->bge_ifp)[4] + IF_LLADDR(sc->bge_ifp)[5]) &
>	    BGE_TX_BACKOFF_SEED_MASK);
>
>	/* Set inter-packet gap */
>	val = 0x2620;
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5720 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5762)
>		val |= CSR_READ_4(sc, BGE_TX_LENGTHS) &
>		    (BGE_TXLEN_JMB_FRM_LEN_MSK | BGE_TXLEN_CNT_DN_VAL_MSK);
>	CSR_WRITE_4(sc, BGE_TX_LENGTHS, val);
>
>	/*
>	 * Specify which ring to use for packets that don't match
>	 * any RX rules.
>	 */
>	CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
>
>	/*
>	 * Configure number of RX lists. One interrupt distribution
>	 * list, sixteen active lists, one bad frames class.
>	 */
>	CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
>
>	/* Inialize RX list placement stats mask. */
>	CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
>	CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
>
>	/* Disable host coalescing until we get it set up */
>	CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
>
>	/* Poll to make sure it's shut down. */
>	for (i = 0; i < BGE_TIMEOUT; i++) {
>		DELAY(10);
>		if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
>			break;
>	}
>
>	if (i == BGE_TIMEOUT) {
>		device_printf(sc->bge_dev,
>		    "host coalescing engine failed to idle\n");
>		return (ENXIO);
>	}
>
>	/* Set up host coalescing defaults */
>	CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks);
>	CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks);
>	CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds);
>	CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds);
>	if (!(BGE_IS_5705_PLUS(sc))) {
>		CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0);
>		CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0);
>	}
>	CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 1);
>	CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 1);
>
>	/* Set up address of statistics block */
>	if (!(BGE_IS_5705_PLUS(sc))) {
>		CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI,
>		    BGE_ADDR_HI(sc->bge_ldata.bge_stats_paddr));
>		CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO,
>		    BGE_ADDR_LO(sc->bge_ldata.bge_stats_paddr));
>		CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK);
>		CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK);
>		CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks);
>	}
>
>	/* Set up address of status block */
>	CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI,
>	    BGE_ADDR_HI(sc->bge_ldata.bge_status_block_paddr));
>	CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
>	    BGE_ADDR_LO(sc->bge_ldata.bge_status_block_paddr));
>
>	/* Set up status block size. */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5700_C0) {
>		val = BGE_STATBLKSZ_FULL;
>		bzero(sc->bge_ldata.bge_status_block, BGE_STATUS_BLK_SZ);
>	} else {
>		val = BGE_STATBLKSZ_32BYTE;
>		bzero(sc->bge_ldata.bge_status_block, 32);
>	}
>	bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>	    sc->bge_cdata.bge_status_map,
>	    BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
>
>	/* Turn on host coalescing state machine */
>	CSR_WRITE_4(sc, BGE_HCC_MODE, val | BGE_HCCMODE_ENABLE);
>
>	/* Turn on RX BD completion state machine and enable attentions */
>	CSR_WRITE_4(sc, BGE_RBDC_MODE,
>	    BGE_RBDCMODE_ENABLE | BGE_RBDCMODE_ATTN);
>
>	/* Turn on RX list placement state machine */
>	CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
>
>	/* Turn on RX list selector state machine. */
>	if (!(BGE_IS_5705_PLUS(sc)))
>		CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
>
>	/* Turn on DMA, clear stats. */
>	val = BGE_MACMODE_TXDMA_ENB | BGE_MACMODE_RXDMA_ENB |
>	    BGE_MACMODE_RX_STATS_CLEAR | BGE_MACMODE_TX_STATS_CLEAR |
>	    BGE_MACMODE_RX_STATS_ENB | BGE_MACMODE_TX_STATS_ENB |
>	    BGE_MACMODE_FRMHDR_DMA_ENB;
>
>	if (sc->bge_flags & BGE_FLAG_TBI)
>		val |= BGE_PORTMODE_TBI;
>	else if (sc->bge_flags & BGE_FLAG_MII_SERDES)
>		val |= BGE_PORTMODE_GMII;
>	else
>		val |= BGE_PORTMODE_MII;
>
>	/* Allow APE to send/receive frames. */
>	if ((sc->bge_mfw_flags & BGE_MFW_ON_APE) != 0)
>		val |= BGE_MACMODE_APE_RX_EN | BGE_MACMODE_APE_TX_EN;
>
>	CSR_WRITE_4(sc, BGE_MAC_MODE, val);
>	DELAY(40);
>
>	/* Set misc. local control, enable interrupts on attentions */
>	BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
>
>#ifdef notdef
>	/* Assert GPIO pins for PHY reset */
>	BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0 |
>	    BGE_MLC_MISCIO_OUT1 | BGE_MLC_MISCIO_OUT2);
>	BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0 |
>	    BGE_MLC_MISCIO_OUTEN1 | BGE_MLC_MISCIO_OUTEN2);
>#endif
>
>	/* Turn on DMA completion state machine */
>	if (!(BGE_IS_5705_PLUS(sc)))
>		CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
>
>	val = BGE_WDMAMODE_ENABLE | BGE_WDMAMODE_ALL_ATTNS;
>
>	/* Enable host coalescing bug fix. */
>	if (BGE_IS_5755_PLUS(sc))
>		val |= BGE_WDMAMODE_STATUS_TAG_FIX;
>
>	/* Request larger DMA burst size to get better performance. */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5785)
>		val |= BGE_WDMAMODE_BURST_ALL_DATA;
>
>	/* Turn on write DMA state machine */
>	CSR_WRITE_4(sc, BGE_WDMA_MODE, val);
>	DELAY(40);
>
>	/* Turn on read DMA state machine */
>	val = BGE_RDMAMODE_ENABLE | BGE_RDMAMODE_ALL_ATTNS;
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5717)
>		val |= BGE_RDMAMODE_MULT_DMA_RD_DIS;
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5785 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM57780)
>		val |= BGE_RDMAMODE_BD_SBD_CRPT_ATTN |
>		    BGE_RDMAMODE_MBUF_RBD_CRPT_ATTN |
>		    BGE_RDMAMODE_MBUF_SBD_CRPT_ATTN;
>	if (sc->bge_flags & BGE_FLAG_PCIE)
>		val |= BGE_RDMAMODE_FIFO_LONG_BURST;
>	if (sc->bge_flags & (BGE_FLAG_TSO | BGE_FLAG_TSO3)) {
>		val |= BGE_RDMAMODE_TSO4_ENABLE;
>		if (sc->bge_flags & BGE_FLAG_TSO3 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5785 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM57780)
>			val |= BGE_RDMAMODE_TSO6_ENABLE;
>	}
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5720 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5762) {
>		val |= CSR_READ_4(sc, BGE_RDMA_MODE) &
>			BGE_RDMAMODE_H2BNC_VLAN_DET;
>		/*
>		 * Allow multiple outstanding read requests from
>		 * non-LSO read DMA engine.
>		 */
>		val &= ~BGE_RDMAMODE_MULT_DMA_RD_DIS;
>	}
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5761 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5785 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM57780 ||
>	    BGE_IS_5717_PLUS(sc) || BGE_IS_57765_PLUS(sc)) {
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5762)
>			rdmareg = BGE_RDMA_RSRVCTRL_REG2;
>		else
>			rdmareg = BGE_RDMA_RSRVCTRL;
>		dmactl = CSR_READ_4(sc, rdmareg);
>		/*
>		 * Adjust tx margin to prevent TX data corruption and
>		 * fix internal FIFO overflow.
>		 */
>		if (sc->bge_chipid == BGE_CHIPID_BCM5719_A0 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5762) {
>			dmactl &= ~(BGE_RDMA_RSRVCTRL_FIFO_LWM_MASK |
>			    BGE_RDMA_RSRVCTRL_FIFO_HWM_MASK |
>			    BGE_RDMA_RSRVCTRL_TXMRGN_MASK);
>			dmactl |= BGE_RDMA_RSRVCTRL_FIFO_LWM_1_5K |
>			    BGE_RDMA_RSRVCTRL_FIFO_HWM_1_5K |
>			    BGE_RDMA_RSRVCTRL_TXMRGN_320B;
>		}
>		/*
>		 * Enable fix for read DMA FIFO overruns.
>		 * The fix is to limit the number of RX BDs
>		 * the hardware would fetch at a fime.
>		 */
>		CSR_WRITE_4(sc, rdmareg, dmactl |
>		    BGE_RDMA_RSRVCTRL_FIFO_OFLW_FIX);
>	}
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5719) {
>		CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
>		    CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
>		    BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_4K |
>		    BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
>	} else if (sc->bge_asicrev == BGE_ASICREV_BCM5720) {
>		/*
>		 * Allow 4KB burst length reads for non-LSO frames.
>		 * Enable 512B burst length reads for buffer descriptors.
>		 */
>		CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
>		    CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
>		    BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_512 |
>		    BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
>	} else if (sc->bge_asicrev == BGE_ASICREV_BCM5762) {
>		CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL_REG2,
>		    CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL_REG2) |
>		    BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_4K |
>		    BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
>	}
>
>	CSR_WRITE_4(sc, BGE_RDMA_MODE, val);
>	DELAY(40);
>
>	if (sc->bge_flags & BGE_FLAG_RDMA_BUG) {
>		for (i = 0; i < BGE_NUM_RDMA_CHANNELS / 2; i++) {
>			val = CSR_READ_4(sc, BGE_RDMA_LENGTH + i * 4);
>			if ((val & 0xFFFF) > BGE_FRAMELEN)
>				break;
>			if (((val >> 16) & 0xFFFF) > BGE_FRAMELEN)
>				break;
>		}
>		if (i != BGE_NUM_RDMA_CHANNELS / 2) {
>			val = CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL);
>			if (sc->bge_asicrev == BGE_ASICREV_BCM5719)
>				val |= BGE_RDMA_TX_LENGTH_WA_5719;
>			else
>				val |= BGE_RDMA_TX_LENGTH_WA_5720;
>			CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL, val);
>		}
>	}
>
>	/* Turn on RX data completion state machine */
>	CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
>
>	/* Turn on RX BD initiator state machine */
>	CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
>
>	/* Turn on RX data and RX BD initiator state machine */
>	CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
>
>	/* Turn on Mbuf cluster free state machine */
>	if (!(BGE_IS_5705_PLUS(sc)))
>		CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
>
>	/* Turn on send BD completion state machine */
>	CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
>
>	/* Turn on send data completion state machine */
>	val = BGE_SDCMODE_ENABLE;
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5761)
>		val |= BGE_SDCMODE_CDELAY;
>	CSR_WRITE_4(sc, BGE_SDC_MODE, val);
>
>	/* Turn on send data initiator state machine */
>	if (sc->bge_flags & (BGE_FLAG_TSO | BGE_FLAG_TSO3))
>		CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE |
>		    BGE_SDIMODE_HW_LSO_PRE_DMA);
>	else
>		CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
>
>	/* Turn on send BD initiator state machine */
>	CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
>
>	/* Turn on send BD selector state machine */
>	CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
>
>	CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
>	CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
>	    BGE_SDISTATSCTL_ENABLE | BGE_SDISTATSCTL_FASTER);
>
>	/* ack/clear link change events */
>	CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
>	    BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
>	    BGE_MACSTAT_LINK_CHANGED);
>	CSR_WRITE_4(sc, BGE_MI_STS, 0);
>
>	/*
>	 * Enable attention when the link has changed state for
>	 * devices that use auto polling.
>	 */
>	if (sc->bge_flags & BGE_FLAG_TBI) {
>		CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
>	} else {
>		if (sc->bge_mi_mode & BGE_MIMODE_AUTOPOLL) {
>			CSR_WRITE_4(sc, BGE_MI_MODE, sc->bge_mi_mode);
>			DELAY(80);
>		}
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
>		    sc->bge_chipid != BGE_CHIPID_BCM5700_B2)
>			CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
>			    BGE_EVTENB_MI_INTERRUPT);
>	}
>
>	/*
>	 * Clear any pending link state attention.
>	 * Otherwise some link state change events may be lost until attention
>	 * is cleared by bge_intr() -> bge_link_upd() sequence.
>	 * It's not necessary on newer BCM chips - perhaps enabling link
>	 * state change attentions implies clearing pending attention.
>	 */
>	CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
>	    BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
>	    BGE_MACSTAT_LINK_CHANGED);
>
>	/* Enable link state change attentions. */
>	BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
>
>	return (0);
>}
>
>static const struct bge_revision *
>bge_lookup_rev(uint32_t chipid)
>{
>	const struct bge_revision *br;
>
>	for (br = bge_revisions; br->br_name != NULL; br++) {
>		if (br->br_chipid == chipid)
>			return (br);
>	}
>
>	for (br = bge_majorrevs; br->br_name != NULL; br++) {
>		if (br->br_chipid == BGE_ASICREV(chipid))
>			return (br);
>	}
>
>	return (NULL);
>}
>
>static const struct bge_vendor *
>bge_lookup_vendor(uint16_t vid)
>{
>	const struct bge_vendor *v;
>
>	for (v = bge_vendors; v->v_name != NULL; v++)
>		if (v->v_id == vid)
>			return (v);
>
>	return (NULL);
>}
>
>static uint32_t
>bge_chipid(device_t dev)
>{
>	uint32_t id;
>
>	id = pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >>
>	    BGE_PCIMISCCTL_ASICREV_SHIFT;
>	if (BGE_ASICREV(id) == BGE_ASICREV_USE_PRODID_REG) {
>		/*
>		 * Find the ASCI revision.  Different chips use different
>		 * registers.
>		 */
>		switch (pci_get_device(dev)) {
>		case BCOM_DEVICEID_BCM5717C:
>			/* 5717 C0 seems to belong to 5720 line. */
>			id = BGE_CHIPID_BCM5720_A0;
>			break;
>		case BCOM_DEVICEID_BCM5717:
>		case BCOM_DEVICEID_BCM5718:
>		case BCOM_DEVICEID_BCM5719:
>		case BCOM_DEVICEID_BCM5720:
>		case BCOM_DEVICEID_BCM5725:
>		case BCOM_DEVICEID_BCM5727:
>		case BCOM_DEVICEID_BCM5762:
>		case BCOM_DEVICEID_BCM57764:
>		case BCOM_DEVICEID_BCM57767:
>		case BCOM_DEVICEID_BCM57787:
>			id = pci_read_config(dev,
>			    BGE_PCI_GEN2_PRODID_ASICREV, 4);
>			break;
>		case BCOM_DEVICEID_BCM57761:
>		case BCOM_DEVICEID_BCM57762:
>		case BCOM_DEVICEID_BCM57765:
>		case BCOM_DEVICEID_BCM57766:
>		case BCOM_DEVICEID_BCM57781:
>		case BCOM_DEVICEID_BCM57782:
>		case BCOM_DEVICEID_BCM57785:
>		case BCOM_DEVICEID_BCM57786:
>		case BCOM_DEVICEID_BCM57791:
>		case BCOM_DEVICEID_BCM57795:
>			id = pci_read_config(dev,
>			    BGE_PCI_GEN15_PRODID_ASICREV, 4);
>			break;
>		default:
>			id = pci_read_config(dev, BGE_PCI_PRODID_ASICREV, 4);
>		}
>	}
>	return (id);
>}
>
>/*
> * Probe for a Broadcom chip. Check the PCI vendor and device IDs
> * against our list and return its name if we find a match.
> *
> * Note that since the Broadcom controller contains VPD support, we
> * try to get the device name string from the controller itself instead
> * of the compiled-in string. It guarantees we'll always announce the
> * right product name. We fall back to the compiled-in string when
> * VPD is unavailable or corrupt.
> */
>static int
>bge_probe(device_t dev)
>{
>	char buf[96];
>	char model[64];
>	const struct bge_revision *br;
>	const char *pname;
>	struct bge_softc *sc;
>	const struct bge_type *t = bge_devs;
>	const struct bge_vendor *v;
>	uint32_t id;
>	uint16_t did, vid;
>
>	sc = device_get_softc(dev);
>	sc->bge_dev = dev;
>	vid = pci_get_vendor(dev);
>	did = pci_get_device(dev);
>	while(t->bge_vid != 0) {
>		if ((vid == t->bge_vid) && (did == t->bge_did)) {
>			id = bge_chipid(dev);
>			br = bge_lookup_rev(id);
>			if (bge_has_eaddr(sc) &&
>			    pci_get_vpd_ident(dev, &pname) == 0)
>				snprintf(model, sizeof(model), "%s", pname);
>			else {
>				v = bge_lookup_vendor(vid);
>				snprintf(model, sizeof(model), "%s %s",
>				    v != NULL ? v->v_name : "Unknown",
>				    br != NULL ? br->br_name :
>				    "NetXtreme/NetLink Ethernet Controller");
>			}
>			snprintf(buf, sizeof(buf), "%s, %sASIC rev. %#08x",
>			    model, br != NULL ? "" : "unknown ", id);
>			device_set_desc_copy(dev, buf);
>			return (BUS_PROBE_DEFAULT);
>		}
>		t++;
>	}
>
>	return (ENXIO);
>}
>
>static void
>bge_dma_free(struct bge_softc *sc)
>{
>	int i;
>
>	/* Destroy DMA maps for RX buffers. */
>	for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
>		if (sc->bge_cdata.bge_rx_std_dmamap[i])
>			bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
>			    sc->bge_cdata.bge_rx_std_dmamap[i]);
>	}
>	if (sc->bge_cdata.bge_rx_std_sparemap)
>		bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
>		    sc->bge_cdata.bge_rx_std_sparemap);
>
>	/* Destroy DMA maps for jumbo RX buffers. */
>	for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
>		if (sc->bge_cdata.bge_rx_jumbo_dmamap[i])
>			bus_dmamap_destroy(sc->bge_cdata.bge_mtag_jumbo,
>			    sc->bge_cdata.bge_rx_jumbo_dmamap[i]);
>	}
>	if (sc->bge_cdata.bge_rx_jumbo_sparemap)
>		bus_dmamap_destroy(sc->bge_cdata.bge_mtag_jumbo,
>		    sc->bge_cdata.bge_rx_jumbo_sparemap);
>
>	/* Destroy DMA maps for TX buffers. */
>	for (i = 0; i < BGE_TX_RING_CNT; i++) {
>		if (sc->bge_cdata.bge_tx_dmamap[i])
>			bus_dmamap_destroy(sc->bge_cdata.bge_tx_mtag,
>			    sc->bge_cdata.bge_tx_dmamap[i]);
>	}
>
>	if (sc->bge_cdata.bge_rx_mtag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_rx_mtag);
>	if (sc->bge_cdata.bge_mtag_jumbo)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_mtag_jumbo);
>	if (sc->bge_cdata.bge_tx_mtag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_tx_mtag);
>
>	/* Destroy standard RX ring. */
>	if (sc->bge_ldata.bge_rx_std_ring_paddr)
>		bus_dmamap_unload(sc->bge_cdata.bge_rx_std_ring_tag,
>		    sc->bge_cdata.bge_rx_std_ring_map);
>	if (sc->bge_ldata.bge_rx_std_ring)
>		bus_dmamem_free(sc->bge_cdata.bge_rx_std_ring_tag,
>		    sc->bge_ldata.bge_rx_std_ring,
>		    sc->bge_cdata.bge_rx_std_ring_map);
>
>	if (sc->bge_cdata.bge_rx_std_ring_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_rx_std_ring_tag);
>
>	/* Destroy jumbo RX ring. */
>	if (sc->bge_ldata.bge_rx_jumbo_ring_paddr)
>		bus_dmamap_unload(sc->bge_cdata.bge_rx_jumbo_ring_tag,
>		    sc->bge_cdata.bge_rx_jumbo_ring_map);
>
>	if (sc->bge_ldata.bge_rx_jumbo_ring)
>		bus_dmamem_free(sc->bge_cdata.bge_rx_jumbo_ring_tag,
>		    sc->bge_ldata.bge_rx_jumbo_ring,
>		    sc->bge_cdata.bge_rx_jumbo_ring_map);
>
>	if (sc->bge_cdata.bge_rx_jumbo_ring_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_rx_jumbo_ring_tag);
>
>	/* Destroy RX return ring. */
>	if (sc->bge_ldata.bge_rx_return_ring_paddr)
>		bus_dmamap_unload(sc->bge_cdata.bge_rx_return_ring_tag,
>		    sc->bge_cdata.bge_rx_return_ring_map);
>
>	if (sc->bge_ldata.bge_rx_return_ring)
>		bus_dmamem_free(sc->bge_cdata.bge_rx_return_ring_tag,
>		    sc->bge_ldata.bge_rx_return_ring,
>		    sc->bge_cdata.bge_rx_return_ring_map);
>
>	if (sc->bge_cdata.bge_rx_return_ring_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_rx_return_ring_tag);
>
>	/* Destroy TX ring. */
>	if (sc->bge_ldata.bge_tx_ring_paddr)
>		bus_dmamap_unload(sc->bge_cdata.bge_tx_ring_tag,
>		    sc->bge_cdata.bge_tx_ring_map);
>
>	if (sc->bge_ldata.bge_tx_ring)
>		bus_dmamem_free(sc->bge_cdata.bge_tx_ring_tag,
>		    sc->bge_ldata.bge_tx_ring,
>		    sc->bge_cdata.bge_tx_ring_map);
>
>	if (sc->bge_cdata.bge_tx_ring_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_tx_ring_tag);
>
>	/* Destroy status block. */
>	if (sc->bge_ldata.bge_status_block_paddr)
>		bus_dmamap_unload(sc->bge_cdata.bge_status_tag,
>		    sc->bge_cdata.bge_status_map);
>
>	if (sc->bge_ldata.bge_status_block)
>		bus_dmamem_free(sc->bge_cdata.bge_status_tag,
>		    sc->bge_ldata.bge_status_block,
>		    sc->bge_cdata.bge_status_map);
>
>	if (sc->bge_cdata.bge_status_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_status_tag);
>
>	/* Destroy statistics block. */
>	if (sc->bge_ldata.bge_stats_paddr)
>		bus_dmamap_unload(sc->bge_cdata.bge_stats_tag,
>		    sc->bge_cdata.bge_stats_map);
>
>	if (sc->bge_ldata.bge_stats)
>		bus_dmamem_free(sc->bge_cdata.bge_stats_tag,
>		    sc->bge_ldata.bge_stats,
>		    sc->bge_cdata.bge_stats_map);
>
>	if (sc->bge_cdata.bge_stats_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_stats_tag);
>
>	if (sc->bge_cdata.bge_buffer_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_buffer_tag);
>
>	/* Destroy the parent tag. */
>	if (sc->bge_cdata.bge_parent_tag)
>		bus_dma_tag_destroy(sc->bge_cdata.bge_parent_tag);
>}
>
>static int
>bge_dma_ring_alloc(struct bge_softc *sc, bus_size_t alignment,
>    bus_size_t maxsize, bus_dma_tag_t *tag, uint8_t **ring, bus_dmamap_t *map,
>    bus_addr_t *paddr, const char *msg)
>{
>	struct bge_dmamap_arg ctx;
>	int error;
>
>	error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
>	    alignment, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
>	    NULL, maxsize, 1, maxsize, 0, NULL, NULL, tag);
>	if (error != 0) {
>		device_printf(sc->bge_dev,
>		    "could not create %s dma tag\n", msg);
>		return (ENOMEM);
>	}
>	/* Allocate DMA'able memory for ring. */
>	error = bus_dmamem_alloc(*tag, (void **)ring,
>	    BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, map);
>	if (error != 0) {
>		device_printf(sc->bge_dev,
>		    "could not allocate DMA'able memory for %s\n", msg);
>		return (ENOMEM);
>	}
>	/* Load the address of the ring. */
>	ctx.bge_busaddr = 0;
>	error = bus_dmamap_load(*tag, *map, *ring, maxsize, bge_dma_map_addr,
>	    &ctx, BUS_DMA_NOWAIT);
>	if (error != 0) {
>		device_printf(sc->bge_dev,
>		    "could not load DMA'able memory for %s\n", msg);
>		return (ENOMEM);
>	}
>	*paddr = ctx.bge_busaddr;
>	return (0);
>}
>
>static int
>bge_dma_alloc(struct bge_softc *sc)
>{
>	bus_addr_t lowaddr;
>	bus_size_t rxmaxsegsz, sbsz, txsegsz, txmaxsegsz;
>	int i, error;
>
>	lowaddr = BUS_SPACE_MAXADDR;
>	if ((sc->bge_flags & BGE_FLAG_40BIT_BUG) != 0)
>		lowaddr = BGE_DMA_MAXADDR;
>	/*
>	 * Allocate the parent bus DMA tag appropriate for PCI.
>	 */
>	error = bus_dma_tag_create(bus_get_dma_tag(sc->bge_dev),
>	    1, 0, lowaddr, BUS_SPACE_MAXADDR, NULL,
>	    NULL, BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT,
>	    0, NULL, NULL, &sc->bge_cdata.bge_parent_tag);
>	if (error != 0) {
>		device_printf(sc->bge_dev,
>		    "could not allocate parent dma tag\n");
>		return (ENOMEM);
>	}
>
>	/* Create tag for standard RX ring. */
>	error = bge_dma_ring_alloc(sc, PAGE_SIZE, BGE_STD_RX_RING_SZ,
>	    &sc->bge_cdata.bge_rx_std_ring_tag,
>	    (uint8_t **)&sc->bge_ldata.bge_rx_std_ring,
>	    &sc->bge_cdata.bge_rx_std_ring_map,
>	    &sc->bge_ldata.bge_rx_std_ring_paddr, "RX ring");
>	if (error)
>		return (error);
>
>	/* Create tag for RX return ring. */
>	error = bge_dma_ring_alloc(sc, PAGE_SIZE, BGE_RX_RTN_RING_SZ(sc),
>	    &sc->bge_cdata.bge_rx_return_ring_tag,
>	    (uint8_t **)&sc->bge_ldata.bge_rx_return_ring,
>	    &sc->bge_cdata.bge_rx_return_ring_map,
>	    &sc->bge_ldata.bge_rx_return_ring_paddr, "RX return ring");
>	if (error)
>		return (error);
>
>	/* Create tag for TX ring. */
>	error = bge_dma_ring_alloc(sc, PAGE_SIZE, BGE_TX_RING_SZ,
>	    &sc->bge_cdata.bge_tx_ring_tag,
>	    (uint8_t **)&sc->bge_ldata.bge_tx_ring,
>	    &sc->bge_cdata.bge_tx_ring_map,
>	    &sc->bge_ldata.bge_tx_ring_paddr, "TX ring");
>	if (error)
>		return (error);
>
>	/*
>	 * Create tag for status block.
>	 * Because we only use single Tx/Rx/Rx return ring, use
>	 * minimum status block size except BCM5700 AX/BX which
>	 * seems to want to see full status block size regardless
>	 * of configured number of ring.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5700_C0)
>		sbsz = BGE_STATUS_BLK_SZ;
>	else
>		sbsz = 32;
>	error = bge_dma_ring_alloc(sc, PAGE_SIZE, sbsz,
>	    &sc->bge_cdata.bge_status_tag,
>	    (uint8_t **)&sc->bge_ldata.bge_status_block,
>	    &sc->bge_cdata.bge_status_map,
>	    &sc->bge_ldata.bge_status_block_paddr, "status block");
>	if (error)
>		return (error);
>
>	/* Create tag for statistics block. */
>	error = bge_dma_ring_alloc(sc, PAGE_SIZE, BGE_STATS_SZ,
>	    &sc->bge_cdata.bge_stats_tag,
>	    (uint8_t **)&sc->bge_ldata.bge_stats,
>	    &sc->bge_cdata.bge_stats_map,
>	    &sc->bge_ldata.bge_stats_paddr, "statistics block");
>	if (error)
>		return (error);
>
>	/* Create tag for jumbo RX ring. */
>	if (BGE_IS_JUMBO_CAPABLE(sc)) {
>		error = bge_dma_ring_alloc(sc, PAGE_SIZE, BGE_JUMBO_RX_RING_SZ,
>		    &sc->bge_cdata.bge_rx_jumbo_ring_tag,
>		    (uint8_t **)&sc->bge_ldata.bge_rx_jumbo_ring,
>		    &sc->bge_cdata.bge_rx_jumbo_ring_map,
>		    &sc->bge_ldata.bge_rx_jumbo_ring_paddr, "jumbo RX ring");
>		if (error)
>			return (error);
>	}
>
>	/* Create parent tag for buffers. */
>	if ((sc->bge_flags & BGE_FLAG_4G_BNDRY_BUG) != 0) {
>		/*
>		 * XXX
>		 * watchdog timeout issue was observed on BCM5704 which
>		 * lives behind PCI-X bridge(e.g AMD 8131 PCI-X bridge).
>		 * Both limiting DMA address space to 32bits and flushing
>		 * mailbox write seem to address the issue.
>		 */
>		if (sc->bge_pcixcap != 0)
>			lowaddr = BUS_SPACE_MAXADDR_32BIT;
>	}
>	error = bus_dma_tag_create(bus_get_dma_tag(sc->bge_dev), 1, 0, lowaddr,
>	    BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 0,
>	    BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL,
>	    &sc->bge_cdata.bge_buffer_tag);
>	if (error != 0) {
>		device_printf(sc->bge_dev,
>		    "could not allocate buffer dma tag\n");
>		return (ENOMEM);
>	}
>	/* Create tag for Tx mbufs. */
>	if (sc->bge_flags & (BGE_FLAG_TSO | BGE_FLAG_TSO3)) {
>		txsegsz = BGE_TSOSEG_SZ;
>		txmaxsegsz = 65535 + sizeof(struct ether_vlan_header);
>	} else {
>		txsegsz = MCLBYTES;
>		txmaxsegsz = MCLBYTES * BGE_NSEG_NEW;
>	}
>	error = bus_dma_tag_create(sc->bge_cdata.bge_buffer_tag, 1,
>	    0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
>	    txmaxsegsz, BGE_NSEG_NEW, txsegsz, 0, NULL, NULL,
>	    &sc->bge_cdata.bge_tx_mtag);
>
>	if (error) {
>		device_printf(sc->bge_dev, "could not allocate TX dma tag\n");
>		return (ENOMEM);
>	}
>
>	/* Create tag for Rx mbufs. */
>	if (sc->bge_flags & BGE_FLAG_JUMBO_STD)
>		rxmaxsegsz = MJUM9BYTES;
>	else
>		rxmaxsegsz = MCLBYTES;
>	error = bus_dma_tag_create(sc->bge_cdata.bge_buffer_tag, 1, 0,
>	    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, rxmaxsegsz, 1,
>	    rxmaxsegsz, 0, NULL, NULL, &sc->bge_cdata.bge_rx_mtag);
>
>	if (error) {
>		device_printf(sc->bge_dev, "could not allocate RX dma tag\n");
>		return (ENOMEM);
>	}
>
>	/* Create DMA maps for RX buffers. */
>	error = bus_dmamap_create(sc->bge_cdata.bge_rx_mtag, 0,
>	    &sc->bge_cdata.bge_rx_std_sparemap);
>	if (error) {
>		device_printf(sc->bge_dev,
>		    "can't create spare DMA map for RX\n");
>		return (ENOMEM);
>	}
>	for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
>		error = bus_dmamap_create(sc->bge_cdata.bge_rx_mtag, 0,
>			    &sc->bge_cdata.bge_rx_std_dmamap[i]);
>		if (error) {
>			device_printf(sc->bge_dev,
>			    "can't create DMA map for RX\n");
>			return (ENOMEM);
>		}
>	}
>
>	/* Create DMA maps for TX buffers. */
>	for (i = 0; i < BGE_TX_RING_CNT; i++) {
>		error = bus_dmamap_create(sc->bge_cdata.bge_tx_mtag, 0,
>			    &sc->bge_cdata.bge_tx_dmamap[i]);
>		if (error) {
>			device_printf(sc->bge_dev,
>			    "can't create DMA map for TX\n");
>			return (ENOMEM);
>		}
>	}
>
>	/* Create tags for jumbo RX buffers. */
>	if (BGE_IS_JUMBO_CAPABLE(sc)) {
>		error = bus_dma_tag_create(sc->bge_cdata.bge_buffer_tag,
>		    1, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
>		    NULL, MJUM9BYTES, BGE_NSEG_JUMBO, PAGE_SIZE,
>		    0, NULL, NULL, &sc->bge_cdata.bge_mtag_jumbo);
>		if (error) {
>			device_printf(sc->bge_dev,
>			    "could not allocate jumbo dma tag\n");
>			return (ENOMEM);
>		}
>		/* Create DMA maps for jumbo RX buffers. */
>		error = bus_dmamap_create(sc->bge_cdata.bge_mtag_jumbo,
>		    0, &sc->bge_cdata.bge_rx_jumbo_sparemap);
>		if (error) {
>			device_printf(sc->bge_dev,
>			    "can't create spare DMA map for jumbo RX\n");
>			return (ENOMEM);
>		}
>		for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
>			error = bus_dmamap_create(sc->bge_cdata.bge_mtag_jumbo,
>				    0, &sc->bge_cdata.bge_rx_jumbo_dmamap[i]);
>			if (error) {
>				device_printf(sc->bge_dev,
>				    "can't create DMA map for jumbo RX\n");
>				return (ENOMEM);
>			}
>		}
>	}
>
>	return (0);
>}
>
>/*
> * Return true if this device has more than one port.
> */
>static int
>bge_has_multiple_ports(struct bge_softc *sc)
>{
>	device_t dev = sc->bge_dev;
>	u_int b, d, f, fscan, s;
>
>	d = pci_get_domain(dev);
>	b = pci_get_bus(dev);
>	s = pci_get_slot(dev);
>	f = pci_get_function(dev);
>	for (fscan = 0; fscan <= PCI_FUNCMAX; fscan++)
>		if (fscan != f && pci_find_dbsf(d, b, s, fscan) != NULL)
>			return (1);
>	return (0);
>}
>
>/*
> * Return true if MSI can be used with this device.
> */
>static int
>bge_can_use_msi(struct bge_softc *sc)
>{
>	int can_use_msi = 0;
>
>	if (sc->bge_msi == 0)
>		return (0);
>
>	/* Disable MSI for polling(4). */
>#ifdef DEVICE_POLLING
>	return (0);
>#endif
>	switch (sc->bge_asicrev) {
>	case BGE_ASICREV_BCM5714_A0:
>	case BGE_ASICREV_BCM5714:
>		/*
>		 * Apparently, MSI doesn't work when these chips are
>		 * configured in single-port mode.
>		 */
>		if (bge_has_multiple_ports(sc))
>			can_use_msi = 1;
>		break;
>	case BGE_ASICREV_BCM5750:
>		if (sc->bge_chiprev != BGE_CHIPREV_5750_AX &&
>		    sc->bge_chiprev != BGE_CHIPREV_5750_BX)
>			can_use_msi = 1;
>		break;
>	default:
>		if (BGE_IS_575X_PLUS(sc))
>			can_use_msi = 1;
>	}
>	return (can_use_msi);
>}
>
>static int
>bge_mbox_reorder(struct bge_softc *sc)
>{
>	/* Lists of PCI bridges that are known to reorder mailbox writes. */
>	static const struct mbox_reorder {
>		const uint16_t vendor;
>		const uint16_t device;
>		const char *desc;
>	} mbox_reorder_lists[] = {
>		{ 0x1022, 0x7450, "AMD-8131 PCI-X Bridge" },
>	};
>	devclass_t pci, pcib;
>	device_t bus, dev;
>	int i;
>
>	pci = devclass_find("pci");
>	pcib = devclass_find("pcib");
>	dev = sc->bge_dev;
>	bus = device_get_parent(dev);
>	for (;;) {
>		dev = device_get_parent(bus);
>		bus = device_get_parent(dev);
>		if (device_get_devclass(dev) != pcib)
>			break;
>		for (i = 0; i < nitems(mbox_reorder_lists); i++) {
>			if (pci_get_vendor(dev) ==
>			    mbox_reorder_lists[i].vendor &&
>			    pci_get_device(dev) ==
>			    mbox_reorder_lists[i].device) {
>				device_printf(sc->bge_dev,
>				    "enabling MBOX workaround for %s\n",
>				    mbox_reorder_lists[i].desc);
>				return (1);
>			}
>		}
>		if (device_get_devclass(bus) != pci)
>			break;
>	}
>	return (0);
>}
>
>static void
>bge_devinfo(struct bge_softc *sc)
>{
>	uint32_t cfg, clk;
>
>	device_printf(sc->bge_dev,
>	    "CHIP ID 0x%08x; ASIC REV 0x%02x; CHIP REV 0x%02x; ",
>	    sc->bge_chipid, sc->bge_asicrev, sc->bge_chiprev);
>	if (sc->bge_flags & BGE_FLAG_PCIE)
>		printf("PCI-E\n");
>	else if (sc->bge_flags & BGE_FLAG_PCIX) {
>		printf("PCI-X ");
>		cfg = CSR_READ_4(sc, BGE_MISC_CFG) & BGE_MISCCFG_BOARD_ID_MASK;
>		if (cfg == BGE_MISCCFG_BOARD_ID_5704CIOBE)
>			clk = 133;
>		else {
>			clk = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1F;
>			switch (clk) {
>			case 0:
>				clk = 33;
>				break;
>			case 2:
>				clk = 50;
>				break;
>			case 4:
>				clk = 66;
>				break;
>			case 6:
>				clk = 100;
>				break;
>			case 7:
>				clk = 133;
>				break;
>			}
>		}
>		printf("%u MHz\n", clk);
>	} else {
>		if (sc->bge_pcixcap != 0)
>			printf("PCI on PCI-X ");
>		else
>			printf("PCI ");
>		cfg = pci_read_config(sc->bge_dev, BGE_PCI_PCISTATE, 4);
>		if (cfg & BGE_PCISTATE_PCI_BUSSPEED)
>			clk = 66;
>		else
>			clk = 33;
>		if (cfg & BGE_PCISTATE_32BIT_BUS)
>			printf("%u MHz; 32bit\n", clk);
>		else
>			printf("%u MHz; 64bit\n", clk);
>	}
>}
>
>static int
>bge_attach(device_t dev)
>{
>	if_t ifp;
>	struct bge_softc *sc;
>	uint32_t hwcfg = 0, misccfg, pcistate;
>	u_char eaddr[ETHER_ADDR_LEN];
>	int capmask, error, reg, rid, trys;
>
>	sc = device_get_softc(dev);
>	sc->bge_dev = dev;
>
>	BGE_LOCK_INIT(sc, device_get_nameunit(dev));
>	TASK_INIT(&sc->bge_intr_task, 0, bge_intr_task, sc);
>	callout_init_mtx(&sc->bge_stat_ch, &sc->bge_mtx, 0);
>
>	pci_enable_busmaster(dev);
>
>	/*
>	 * Allocate control/status registers.
>	 */
>	rid = PCIR_BAR(0);
>	sc->bge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
>	    RF_ACTIVE);
>
>	if (sc->bge_res == NULL) {
>		device_printf (sc->bge_dev, "couldn't map BAR0 memory\n");
>		error = ENXIO;
>		goto fail;
>	}
>
>	/* Save various chip information. */
>	sc->bge_func_addr = pci_get_function(dev);
>	sc->bge_chipid = bge_chipid(dev);
>	sc->bge_asicrev = BGE_ASICREV(sc->bge_chipid);
>	sc->bge_chiprev = BGE_CHIPREV(sc->bge_chipid);
>
>	/* Set default PHY address. */
>	sc->bge_phy_addr = 1;
>	 /*
>	  * PHY address mapping for various devices.
>	  *
>	  *          | F0 Cu | F0 Sr | F1 Cu | F1 Sr |
>	  * ---------+-------+-------+-------+-------+
>	  * BCM57XX  |   1   |   X   |   X   |   X   |
>	  * BCM5704  |   1   |   X   |   1   |   X   |
>	  * BCM5717  |   1   |   8   |   2   |   9   |
>	  * BCM5719  |   1   |   8   |   2   |   9   |
>	  * BCM5720  |   1   |   8   |   2   |   9   |
>	  *
>	  *          | F2 Cu | F2 Sr | F3 Cu | F3 Sr |
>	  * ---------+-------+-------+-------+-------+
>	  * BCM57XX  |   X   |   X   |   X   |   X   |
>	  * BCM5704  |   X   |   X   |   X   |   X   |
>	  * BCM5717  |   X   |   X   |   X   |   X   |
>	  * BCM5719  |   3   |   10  |   4   |   11  |
>	  * BCM5720  |   X   |   X   |   X   |   X   |
>	  *
>	  * Other addresses may respond but they are not
>	  * IEEE compliant PHYs and should be ignored.
>	  */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5717 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5719 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5720) {
>		if (sc->bge_chipid != BGE_CHIPID_BCM5717_A0) {
>			if (CSR_READ_4(sc, BGE_SGDIG_STS) &
>			    BGE_SGDIGSTS_IS_SERDES)
>				sc->bge_phy_addr = sc->bge_func_addr + 8;
>			else
>				sc->bge_phy_addr = sc->bge_func_addr + 1;
>		} else {
>			if (CSR_READ_4(sc, BGE_CPMU_PHY_STRAP) &
>			    BGE_CPMU_PHY_STRAP_IS_SERDES)
>				sc->bge_phy_addr = sc->bge_func_addr + 8;
>			else
>				sc->bge_phy_addr = sc->bge_func_addr + 1;
>		}
>	}
>
>	if (bge_has_eaddr(sc))
>		sc->bge_flags |= BGE_FLAG_EADDR;
>
>	/* Save chipset family. */
>	switch (sc->bge_asicrev) {
>	case BGE_ASICREV_BCM5762:
>	case BGE_ASICREV_BCM57765:
>	case BGE_ASICREV_BCM57766:
>		sc->bge_flags |= BGE_FLAG_57765_PLUS;
>		/* FALLTHROUGH */
>	case BGE_ASICREV_BCM5717:
>	case BGE_ASICREV_BCM5719:
>	case BGE_ASICREV_BCM5720:
>		sc->bge_flags |= BGE_FLAG_5717_PLUS | BGE_FLAG_5755_PLUS |
>		    BGE_FLAG_575X_PLUS | BGE_FLAG_5705_PLUS | BGE_FLAG_JUMBO |
>		    BGE_FLAG_JUMBO_FRAME;
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5719 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5720) {
>			/*
>			 * Enable work around for DMA engine miscalculation
>			 * of TXMBUF available space.
>			 */
>			sc->bge_flags |= BGE_FLAG_RDMA_BUG;
>			if (sc->bge_asicrev == BGE_ASICREV_BCM5719 &&
>			    sc->bge_chipid == BGE_CHIPID_BCM5719_A0) {
>				/* Jumbo frame on BCM5719 A0 does not work. */
>				sc->bge_flags &= ~BGE_FLAG_JUMBO;
>			}
>		}
>		break;
>	case BGE_ASICREV_BCM5755:
>	case BGE_ASICREV_BCM5761:
>	case BGE_ASICREV_BCM5784:
>	case BGE_ASICREV_BCM5785:
>	case BGE_ASICREV_BCM5787:
>	case BGE_ASICREV_BCM57780:
>		sc->bge_flags |= BGE_FLAG_5755_PLUS | BGE_FLAG_575X_PLUS |
>		    BGE_FLAG_5705_PLUS;
>		break;
>	case BGE_ASICREV_BCM5700:
>	case BGE_ASICREV_BCM5701:
>	case BGE_ASICREV_BCM5703:
>	case BGE_ASICREV_BCM5704:
>		sc->bge_flags |= BGE_FLAG_5700_FAMILY | BGE_FLAG_JUMBO;
>		break;
>	case BGE_ASICREV_BCM5714_A0:
>	case BGE_ASICREV_BCM5780:
>	case BGE_ASICREV_BCM5714:
>		sc->bge_flags |= BGE_FLAG_5714_FAMILY | BGE_FLAG_JUMBO_STD;
>		/* FALLTHROUGH */
>	case BGE_ASICREV_BCM5750:
>	case BGE_ASICREV_BCM5752:
>	case BGE_ASICREV_BCM5906:
>		sc->bge_flags |= BGE_FLAG_575X_PLUS;
>		/* FALLTHROUGH */
>	case BGE_ASICREV_BCM5705:
>		sc->bge_flags |= BGE_FLAG_5705_PLUS;
>		break;
>	}
>
>	/* Identify chips with APE processor. */
>	switch (sc->bge_asicrev) {
>	case BGE_ASICREV_BCM5717:
>	case BGE_ASICREV_BCM5719:
>	case BGE_ASICREV_BCM5720:
>	case BGE_ASICREV_BCM5761:
>	case BGE_ASICREV_BCM5762:
>		sc->bge_flags |= BGE_FLAG_APE;
>		break;
>	}
>
>	/* Chips with APE need BAR2 access for APE registers/memory. */
>	if ((sc->bge_flags & BGE_FLAG_APE) != 0) {
>		rid = PCIR_BAR(2);
>		sc->bge_res2 = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
>		    RF_ACTIVE);
>		if (sc->bge_res2 == NULL) {
>			device_printf (sc->bge_dev,
>			    "couldn't map BAR2 memory\n");
>			error = ENXIO;
>			goto fail;
>		}
>
>		/* Enable APE register/memory access by host driver. */
>		pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
>		pcistate |= BGE_PCISTATE_ALLOW_APE_CTLSPC_WR |
>		    BGE_PCISTATE_ALLOW_APE_SHMEM_WR |
>		    BGE_PCISTATE_ALLOW_APE_PSPACE_WR;
>		pci_write_config(dev, BGE_PCI_PCISTATE, pcistate, 4);
>
>		bge_ape_lock_init(sc);
>		bge_ape_read_fw_ver(sc);
>	}
>
>	/* Add SYSCTLs, requires the chipset family to be set. */
>	bge_add_sysctls(sc);
>
>	/* Identify the chips that use an CPMU. */
>	if (BGE_IS_5717_PLUS(sc) ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5761 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5785 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM57780)
>		sc->bge_flags |= BGE_FLAG_CPMU_PRESENT;
>	if ((sc->bge_flags & BGE_FLAG_CPMU_PRESENT) != 0)
>		sc->bge_mi_mode = BGE_MIMODE_500KHZ_CONST;
>	else
>		sc->bge_mi_mode = BGE_MIMODE_BASE;
>	/* Enable auto polling for BCM570[0-5]. */
>	if (BGE_IS_5700_FAMILY(sc) || sc->bge_asicrev == BGE_ASICREV_BCM5705)
>		sc->bge_mi_mode |= BGE_MIMODE_AUTOPOLL;
>
>	/*
>	 * All Broadcom controllers have 4GB boundary DMA bug.
>	 * Whenever an address crosses a multiple of the 4GB boundary
>	 * (including 4GB, 8Gb, 12Gb, etc.) and makes the transition
>	 * from 0xX_FFFF_FFFF to 0x(X+1)_0000_0000 an internal DMA
>	 * state machine will lockup and cause the device to hang.
>	 */
>	sc->bge_flags |= BGE_FLAG_4G_BNDRY_BUG;
>
>	/* BCM5755 or higher and BCM5906 have short DMA bug. */
>	if (BGE_IS_5755_PLUS(sc) || sc->bge_asicrev == BGE_ASICREV_BCM5906)
>		sc->bge_flags |= BGE_FLAG_SHORT_DMA_BUG;
>
>	/*
>	 * BCM5719 cannot handle DMA requests for DMA segments that
>	 * have larger than 4KB in size.  However the maximum DMA
>	 * segment size created in DMA tag is 4KB for TSO, so we
>	 * wouldn't encounter the issue here.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5719)
>		sc->bge_flags |= BGE_FLAG_4K_RDMA_BUG;
>
>	misccfg = CSR_READ_4(sc, BGE_MISC_CFG) & BGE_MISCCFG_BOARD_ID_MASK;
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5705) {
>		if (misccfg == BGE_MISCCFG_BOARD_ID_5788 ||
>		    misccfg == BGE_MISCCFG_BOARD_ID_5788M)
>			sc->bge_flags |= BGE_FLAG_5788;
>	}
>
>	capmask = BMSR_DEFCAPMASK;
>	if ((sc->bge_asicrev == BGE_ASICREV_BCM5703 &&
>	    (misccfg == 0x4000 || misccfg == 0x8000)) ||
>	    (sc->bge_asicrev == BGE_ASICREV_BCM5705 &&
>	    pci_get_vendor(dev) == BCOM_VENDORID &&
>	    (pci_get_device(dev) == BCOM_DEVICEID_BCM5901 ||
>	    pci_get_device(dev) == BCOM_DEVICEID_BCM5901A2 ||
>	    pci_get_device(dev) == BCOM_DEVICEID_BCM5705F)) ||
>	    (pci_get_vendor(dev) == BCOM_VENDORID &&
>	    (pci_get_device(dev) == BCOM_DEVICEID_BCM5751F ||
>	    pci_get_device(dev) == BCOM_DEVICEID_BCM5753F ||
>	    pci_get_device(dev) == BCOM_DEVICEID_BCM5787F)) ||
>	    pci_get_device(dev) == BCOM_DEVICEID_BCM57790 ||
>	    pci_get_device(dev) == BCOM_DEVICEID_BCM57791 ||
>	    pci_get_device(dev) == BCOM_DEVICEID_BCM57795 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5906) {
>		/* These chips are 10/100 only. */
>		capmask &= ~BMSR_EXTSTAT;
>		sc->bge_phy_flags |= BGE_PHY_NO_WIRESPEED;
>	}
>
>	/*
>	 * Some controllers seem to require a special firmware to use
>	 * TSO. But the firmware is not available to FreeBSD and Linux
>	 * claims that the TSO performed by the firmware is slower than
>	 * hardware based TSO. Moreover the firmware based TSO has one
>	 * known bug which can't handle TSO if Ethernet header + IP/TCP
>	 * header is greater than 80 bytes. A workaround for the TSO
>	 * bug exist but it seems it's too expensive than not using
>	 * TSO at all. Some hardwares also have the TSO bug so limit
>	 * the TSO to the controllers that are not affected TSO issues
>	 * (e.g. 5755 or higher).
>	 */
>	if (BGE_IS_5717_PLUS(sc)) {
>		/* BCM5717 requires different TSO configuration. */
>		sc->bge_flags |= BGE_FLAG_TSO3;
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5719 &&
>		    sc->bge_chipid == BGE_CHIPID_BCM5719_A0) {
>			/* TSO on BCM5719 A0 does not work. */
>			sc->bge_flags &= ~BGE_FLAG_TSO3;
>		}
>	} else if (BGE_IS_5755_PLUS(sc)) {
>		/*
>		 * BCM5754 and BCM5787 shares the same ASIC id so
>		 * explicit device id check is required.
>		 * Due to unknown reason TSO does not work on BCM5755M.
>		 */
>		if (pci_get_device(dev) != BCOM_DEVICEID_BCM5754 &&
>		    pci_get_device(dev) != BCOM_DEVICEID_BCM5754M &&
>		    pci_get_device(dev) != BCOM_DEVICEID_BCM5755M)
>			sc->bge_flags |= BGE_FLAG_TSO;
>	}
>
>	/*
>	 * Check if this is a PCI-X or PCI Express device.
>	 */
>	if (pci_find_cap(dev, PCIY_EXPRESS, &reg) == 0) {
>		/*
>		 * Found a PCI Express capabilities register, this
>		 * must be a PCI Express device.
>		 */
>		sc->bge_flags |= BGE_FLAG_PCIE;
>		sc->bge_expcap = reg;
>		/* Extract supported maximum payload size. */
>		sc->bge_mps = pci_read_config(dev, sc->bge_expcap +
>		    PCIER_DEVICE_CAP, 2);
>		sc->bge_mps = 128 << (sc->bge_mps & PCIEM_CAP_MAX_PAYLOAD);
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5719 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5720)
>			sc->bge_expmrq = 2048;
>		else
>			sc->bge_expmrq = 4096;
>		pci_set_max_read_req(dev, sc->bge_expmrq);
>	} else {
>		/*
>		 * Check if the device is in PCI-X Mode.
>		 * (This bit is not valid on PCI Express controllers.)
>		 */
>		if (pci_find_cap(dev, PCIY_PCIX, &reg) == 0)
>			sc->bge_pcixcap = reg;
>		if ((pci_read_config(dev, BGE_PCI_PCISTATE, 4) &
>		    BGE_PCISTATE_PCI_BUSMODE) == 0)
>			sc->bge_flags |= BGE_FLAG_PCIX;
>	}
>
>	/*
>	 * The 40bit DMA bug applies to the 5714/5715 controllers and is
>	 * not actually a MAC controller bug but an issue with the embedded
>	 * PCIe to PCI-X bridge in the device. Use 40bit DMA workaround.
>	 */
>	if (BGE_IS_5714_FAMILY(sc) && (sc->bge_flags & BGE_FLAG_PCIX))
>		sc->bge_flags |= BGE_FLAG_40BIT_BUG;
>	/*
>	 * Some PCI-X bridges are known to trigger write reordering to
>	 * the mailbox registers. Typical phenomena is watchdog timeouts
>	 * caused by out-of-order TX completions.  Enable workaround for
>	 * PCI-X devices that live behind these bridges.
>	 * Note, PCI-X controllers can run in PCI mode so we can't use
>	 * BGE_FLAG_PCIX flag to detect PCI-X controllers.
>	 */
>	if (sc->bge_pcixcap != 0 && bge_mbox_reorder(sc) != 0)
>		sc->bge_flags |= BGE_FLAG_MBOX_REORDER;
>	/*
>	 * Allocate the interrupt, using MSI if possible.  These devices
>	 * support 8 MSI messages, but only the first one is used in
>	 * normal operation.
>	 */
>	rid = 0;
>	if (pci_find_cap(sc->bge_dev, PCIY_MSI, &reg) == 0) {
>		sc->bge_msicap = reg;
>		reg = 1;
>		if (bge_can_use_msi(sc) && pci_alloc_msi(dev, &reg) == 0) {
>			rid = 1;
>			sc->bge_flags |= BGE_FLAG_MSI;
>		}
>	}
>
>	/*
>	 * All controllers except BCM5700 supports tagged status but
>	 * we use tagged status only for MSI case on BCM5717. Otherwise
>	 * MSI on BCM5717 does not work.
>	 */
>#ifndef DEVICE_POLLING
>	if (sc->bge_flags & BGE_FLAG_MSI && BGE_IS_5717_PLUS(sc))
>		sc->bge_flags |= BGE_FLAG_TAGGED_STATUS;
>#endif
>
>	sc->bge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
>	    RF_ACTIVE | (rid != 0 ? 0 : RF_SHAREABLE));
>
>	if (sc->bge_irq == NULL) {
>		device_printf(sc->bge_dev, "couldn't map interrupt\n");
>		error = ENXIO;
>		goto fail;
>	}
>
>	bge_devinfo(sc);
>
>	sc->bge_asf_mode = 0;
>	/* No ASF if APE present. */
>	if ((sc->bge_flags & BGE_FLAG_APE) == 0) {
>		if (bge_allow_asf && (bge_readmem_ind(sc, BGE_SRAM_DATA_SIG) ==
>		    BGE_SRAM_DATA_SIG_MAGIC)) {
>			if (bge_readmem_ind(sc, BGE_SRAM_DATA_CFG) &
>			    BGE_HWCFG_ASF) {
>				sc->bge_asf_mode |= ASF_ENABLE;
>				sc->bge_asf_mode |= ASF_STACKUP;
>				if (BGE_IS_575X_PLUS(sc))
>					sc->bge_asf_mode |= ASF_NEW_HANDSHAKE;
>			}
>		}
>	}
>
>	bge_stop_fw(sc);
>	bge_sig_pre_reset(sc, BGE_RESET_SHUTDOWN);
>	if (bge_reset(sc)) {
>		device_printf(sc->bge_dev, "chip reset failed\n");
>		error = ENXIO;
>		goto fail;
>	}
>
>	bge_sig_legacy(sc, BGE_RESET_SHUTDOWN);
>	bge_sig_post_reset(sc, BGE_RESET_SHUTDOWN);
>
>	if (bge_chipinit(sc)) {
>		device_printf(sc->bge_dev, "chip initialization failed\n");
>		error = ENXIO;
>		goto fail;
>	}
>
>	error = bge_get_eaddr(sc, eaddr);
>	if (error) {
>		device_printf(sc->bge_dev,
>		    "failed to read station address\n");
>		error = ENXIO;
>		goto fail;
>	}
>
>	/* 5705 limits RX return ring to 512 entries. */
>	if (BGE_IS_5717_PLUS(sc))
>		sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
>	else if (BGE_IS_5705_PLUS(sc))
>		sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
>	else
>		sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
>
>	if (bge_dma_alloc(sc)) {
>		device_printf(sc->bge_dev,
>		    "failed to allocate DMA resources\n");
>		error = ENXIO;
>		goto fail;
>	}
>
>	/* Set default tuneable values. */
>	sc->bge_stat_ticks = BGE_TICKS_PER_SEC;
>	sc->bge_rx_coal_ticks = 150;
>	sc->bge_tx_coal_ticks = 150;
>	sc->bge_rx_max_coal_bds = 10;
>	sc->bge_tx_max_coal_bds = 10;
>
>	/* Initialize checksum features to use. */
>	sc->bge_csum_features = BGE_CSUM_FEATURES;
>	if (sc->bge_forced_udpcsum != 0)
>		sc->bge_csum_features |= CSUM_UDP;
>
>	/* Set up ifnet structure */
>	ifp = sc->bge_ifp = if_alloc(IFT_ETHER);
>	if (ifp == NULL) {
>		device_printf(sc->bge_dev, "failed to if_alloc()\n");
>		error = ENXIO;
>		goto fail;
>	}
>	if_setsoftc(ifp, sc);
>	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
>	if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
>	if_setioctlfn(ifp, bge_ioctl);
>	if_setstartfn(ifp, bge_start);
>	if_setinitfn(ifp, bge_init);
>	if_setgetcounterfn(ifp, bge_get_counter);
>	if_setsendqlen(ifp, BGE_TX_RING_CNT - 1);
>	if_setsendqready(ifp);
>	if_sethwassist(ifp, sc->bge_csum_features);
>	if_setcapabilities(ifp, IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING |
>	    IFCAP_VLAN_MTU | IFCAP_WOL_MAGIC);
>	if ((sc->bge_flags & (BGE_FLAG_TSO | BGE_FLAG_TSO3)) != 0) {
>		if_sethwassistbits(ifp, CSUM_TSO, 0);
>		if_setcapabilitiesbit(ifp, IFCAP_TSO4 | IFCAP_VLAN_HWTSO, 0);
>	}
>#ifdef IFCAP_VLAN_HWCSUM
>	if_setcapabilitiesbit(ifp, IFCAP_VLAN_HWCSUM, 0);
>#endif
>	if_setcapenable(ifp, if_getcapabilities(ifp));
>#ifdef DEVICE_POLLING
>	if_setcapabilitiesbit(ifp, IFCAP_POLLING, 0);
>#endif
>
>	/*
>	 * 5700 B0 chips do not support checksumming correctly due
>	 * to hardware bugs.
>	 */
>	if (sc->bge_chipid == BGE_CHIPID_BCM5700_B0) {
>		if_setcapabilitiesbit(ifp, 0, IFCAP_HWCSUM);
>		if_setcapenablebit(ifp, 0, IFCAP_HWCSUM);
>		if_sethwassist(ifp, 0);
>	}
>
>	/*
>	 * Figure out what sort of media we have by checking the
>	 * hardware config word in the first 32k of NIC internal memory,
>	 * or fall back to examining the EEPROM if necessary.
>	 * Note: on some BCM5700 cards, this value appears to be unset.
>	 * If that's the case, we have to rely on identifying the NIC
>	 * by its PCI subsystem ID, as we do below for the SysKonnect
>	 * SK-9D41.
>	 */
>	if (bge_readmem_ind(sc, BGE_SRAM_DATA_SIG) == BGE_SRAM_DATA_SIG_MAGIC)
>		hwcfg = bge_readmem_ind(sc, BGE_SRAM_DATA_CFG);
>	else if ((sc->bge_flags & BGE_FLAG_EADDR) &&
>	    (sc->bge_asicrev != BGE_ASICREV_BCM5906)) {
>		if (bge_read_eeprom(sc, (caddr_t)&hwcfg, BGE_EE_HWCFG_OFFSET,
>		    sizeof(hwcfg))) {
>			device_printf(sc->bge_dev, "failed to read EEPROM\n");
>			error = ENXIO;
>			goto fail;
>		}
>		hwcfg = ntohl(hwcfg);
>	}
>
>	/* The SysKonnect SK-9D41 is a 1000baseSX card. */
>	if ((pci_read_config(dev, BGE_PCI_SUBSYS, 4) >> 16) ==
>	    SK_SUBSYSID_9D41 || (hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER) {
>		if (BGE_IS_5705_PLUS(sc)) {
>			sc->bge_flags |= BGE_FLAG_MII_SERDES;
>			sc->bge_phy_flags |= BGE_PHY_NO_WIRESPEED;
>		} else
>			sc->bge_flags |= BGE_FLAG_TBI;
>	}
>
>	/* Set various PHY bug flags. */
>	if (sc->bge_chipid == BGE_CHIPID_BCM5701_A0 ||
>	    sc->bge_chipid == BGE_CHIPID_BCM5701_B0)
>		sc->bge_phy_flags |= BGE_PHY_CRC_BUG;
>	if (sc->bge_chiprev == BGE_CHIPREV_5703_AX ||
>	    sc->bge_chiprev == BGE_CHIPREV_5704_AX)
>		sc->bge_phy_flags |= BGE_PHY_ADC_BUG;
>	if (sc->bge_chipid == BGE_CHIPID_BCM5704_A0)
>		sc->bge_phy_flags |= BGE_PHY_5704_A0_BUG;
>	if (pci_get_subvendor(dev) == DELL_VENDORID)
>		sc->bge_phy_flags |= BGE_PHY_NO_3LED;
>	if ((BGE_IS_5705_PLUS(sc)) &&
>	    sc->bge_asicrev != BGE_ASICREV_BCM5906 &&
>	    sc->bge_asicrev != BGE_ASICREV_BCM5785 &&
>	    sc->bge_asicrev != BGE_ASICREV_BCM57780 &&
>	    !BGE_IS_5717_PLUS(sc)) {
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5755 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5761 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5787) {
>			if (pci_get_device(dev) != BCOM_DEVICEID_BCM5722 &&
>			    pci_get_device(dev) != BCOM_DEVICEID_BCM5756)
>				sc->bge_phy_flags |= BGE_PHY_JITTER_BUG;
>			if (pci_get_device(dev) == BCOM_DEVICEID_BCM5755M)
>				sc->bge_phy_flags |= BGE_PHY_ADJUST_TRIM;
>		} else
>			sc->bge_phy_flags |= BGE_PHY_BER_BUG;
>	}
>
>	/*
>	 * Don't enable Ethernet@WireSpeed for the 5700 or the
>	 * 5705 A0 and A1 chips.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5700 ||
>	    (sc->bge_asicrev == BGE_ASICREV_BCM5705 &&
>	    (sc->bge_chipid != BGE_CHIPID_BCM5705_A0 &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5705_A1)))
>		sc->bge_phy_flags |= BGE_PHY_NO_WIRESPEED;
>
>	if (sc->bge_flags & BGE_FLAG_TBI) {
>		ifmedia_init(&sc->bge_ifmedia, IFM_IMASK, bge_ifmedia_upd,
>		    bge_ifmedia_sts);
>		ifmedia_add(&sc->bge_ifmedia, IFM_ETHER | IFM_1000_SX, 0, NULL);
>		ifmedia_add(&sc->bge_ifmedia, IFM_ETHER | IFM_1000_SX | IFM_FDX,
>		    0, NULL);
>		ifmedia_add(&sc->bge_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL);
>		ifmedia_set(&sc->bge_ifmedia, IFM_ETHER | IFM_AUTO);
>		sc->bge_ifmedia.ifm_media = sc->bge_ifmedia.ifm_cur->ifm_media;
>	} else {
>		/*
>		 * Do transceiver setup and tell the firmware the
>		 * driver is down so we can try to get access the
>		 * probe if ASF is running.  Retry a couple of times
>		 * if we get a conflict with the ASF firmware accessing
>		 * the PHY.
>		 */
>		trys = 0;
>		BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
>again:
>		bge_asf_driver_up(sc);
>
>		error = mii_attach(dev, &sc->bge_miibus, ifp, 
>		    (ifm_change_cb_t)bge_ifmedia_upd,
>		    (ifm_stat_cb_t)bge_ifmedia_sts, capmask, sc->bge_phy_addr, 
>		    MII_OFFSET_ANY, MIIF_DOPAUSE);
>		if (error != 0) {
>			if (trys++ < 4) {
>				device_printf(sc->bge_dev, "Try again\n");
>				bge_miibus_writereg(sc->bge_dev,
>				    sc->bge_phy_addr, MII_BMCR, BMCR_RESET);
>				goto again;
>			}
>			device_printf(sc->bge_dev, "attaching PHYs failed\n");
>			goto fail;
>		}
>
>		/*
>		 * Now tell the firmware we are going up after probing the PHY
>		 */
>		if (sc->bge_asf_mode & ASF_STACKUP)
>			BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
>	}
>
>	/*
>	 * When using the BCM5701 in PCI-X mode, data corruption has
>	 * been observed in the first few bytes of some received packets.
>	 * Aligning the packet buffer in memory eliminates the corruption.
>	 * Unfortunately, this misaligns the packet payloads.  On platforms
>	 * which do not support unaligned accesses, we will realign the
>	 * payloads by copying the received packets.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5701 &&
>	    sc->bge_flags & BGE_FLAG_PCIX)
>                sc->bge_flags |= BGE_FLAG_RX_ALIGNBUG;
>
>	/*
>	 * Call MI attach routine.
>	 */
>	ether_ifattach(ifp, eaddr);
>
>	/* Tell upper layer we support long frames. */
>	if_setifheaderlen(ifp, sizeof(struct ether_vlan_header));
>
>	/*
>	 * Hookup IRQ last.
>	 */
>	if (BGE_IS_5755_PLUS(sc) && sc->bge_flags & BGE_FLAG_MSI) {
>		/* Take advantage of single-shot MSI. */
>		CSR_WRITE_4(sc, BGE_MSI_MODE, CSR_READ_4(sc, BGE_MSI_MODE) &
>		    ~BGE_MSIMODE_ONE_SHOT_DISABLE);
>		sc->bge_tq = taskqueue_create_fast("bge_taskq", M_WAITOK,
>		    taskqueue_thread_enqueue, &sc->bge_tq);
>		if (sc->bge_tq == NULL) {
>			device_printf(dev, "could not create taskqueue.\n");
>			ether_ifdetach(ifp);
>			error = ENOMEM;
>			goto fail;
>		}
>		error = taskqueue_start_threads(&sc->bge_tq, 1, PI_NET,
>		    "%s taskq", device_get_nameunit(sc->bge_dev));
>		if (error != 0) {
>			device_printf(dev, "could not start threads.\n");
>			ether_ifdetach(ifp);
>			goto fail;
>		}
>		error = bus_setup_intr(dev, sc->bge_irq,
>		    INTR_TYPE_NET | INTR_MPSAFE, bge_msi_intr, NULL, sc,
>		    &sc->bge_intrhand);
>	} else
>		error = bus_setup_intr(dev, sc->bge_irq,
>		    INTR_TYPE_NET | INTR_MPSAFE, NULL, bge_intr, sc,
>		    &sc->bge_intrhand);
>
>	if (error) {
>		ether_ifdetach(ifp);
>		device_printf(sc->bge_dev, "couldn't set up irq\n");
>	}
>
>fail:
>	if (error)
>		bge_detach(dev);
>	return (error);
>}
>
>static int
>bge_detach(device_t dev)
>{
>	struct bge_softc *sc;
>	if_t ifp;
>
>	sc = device_get_softc(dev);
>	ifp = sc->bge_ifp;
>
>#ifdef DEVICE_POLLING
>	if (if_getcapenable(ifp) & IFCAP_POLLING)
>		ether_poll_deregister(ifp);
>#endif
>
>	if (device_is_attached(dev)) {
>		ether_ifdetach(ifp);
>		BGE_LOCK(sc);
>		bge_stop(sc);
>		BGE_UNLOCK(sc);
>		callout_drain(&sc->bge_stat_ch);
>	}
>
>	if (sc->bge_tq)
>		taskqueue_drain(sc->bge_tq, &sc->bge_intr_task);
>
>	if (sc->bge_flags & BGE_FLAG_TBI)
>		ifmedia_removeall(&sc->bge_ifmedia);
>	else if (sc->bge_miibus != NULL) {
>		bus_generic_detach(dev);
>		device_delete_child(dev, sc->bge_miibus);
>	}
>
>	bge_release_resources(sc);
>
>	return (0);
>}
>
>static void
>bge_release_resources(struct bge_softc *sc)
>{
>	device_t dev;
>
>	dev = sc->bge_dev;
>
>	if (sc->bge_tq != NULL)
>		taskqueue_free(sc->bge_tq);
>
>	if (sc->bge_intrhand != NULL)
>		bus_teardown_intr(dev, sc->bge_irq, sc->bge_intrhand);
>
>	if (sc->bge_irq != NULL) {
>		bus_release_resource(dev, SYS_RES_IRQ,
>		    rman_get_rid(sc->bge_irq), sc->bge_irq);
>		pci_release_msi(dev);
>	}
>
>	if (sc->bge_res != NULL)
>		bus_release_resource(dev, SYS_RES_MEMORY,
>		    rman_get_rid(sc->bge_res), sc->bge_res);
>
>	if (sc->bge_res2 != NULL)
>		bus_release_resource(dev, SYS_RES_MEMORY,
>		    rman_get_rid(sc->bge_res2), sc->bge_res2);
>
>	if (sc->bge_ifp != NULL)
>		if_free(sc->bge_ifp);
>
>	bge_dma_free(sc);
>
>	if (mtx_initialized(&sc->bge_mtx))	/* XXX */
>		BGE_LOCK_DESTROY(sc);
>}
>
>static int
>bge_reset(struct bge_softc *sc)
>{
>	device_t dev;
>	uint32_t cachesize, command, mac_mode, mac_mode_mask, reset, val;
>	void (*write_op)(struct bge_softc *, int, int);
>	uint16_t devctl;
>	int i;
>
>	dev = sc->bge_dev;
>
>	mac_mode_mask = BGE_MACMODE_HALF_DUPLEX | BGE_MACMODE_PORTMODE;
>	if ((sc->bge_mfw_flags & BGE_MFW_ON_APE) != 0)
>		mac_mode_mask |= BGE_MACMODE_APE_RX_EN | BGE_MACMODE_APE_TX_EN;
>	mac_mode = CSR_READ_4(sc, BGE_MAC_MODE) & mac_mode_mask;
>
>	if (BGE_IS_575X_PLUS(sc) && !BGE_IS_5714_FAMILY(sc) &&
>	    (sc->bge_asicrev != BGE_ASICREV_BCM5906)) {
>		if (sc->bge_flags & BGE_FLAG_PCIE)
>			write_op = bge_writemem_direct;
>		else
>			write_op = bge_writemem_ind;
>	} else
>		write_op = bge_writereg_ind;
>
>	if (sc->bge_asicrev != BGE_ASICREV_BCM5700 &&
>	    sc->bge_asicrev != BGE_ASICREV_BCM5701) {
>		CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
>		for (i = 0; i < 8000; i++) {
>			if (CSR_READ_4(sc, BGE_NVRAM_SWARB) &
>			    BGE_NVRAMSWARB_GNT1)
>				break;
>			DELAY(20);
>		}
>		if (i == 8000) {
>			if (bootverbose)
>				device_printf(dev, "NVRAM lock timedout!\n");
>		}
>	}
>	/* Take APE lock when performing reset. */
>	bge_ape_lock(sc, BGE_APE_LOCK_GRC);
>
>	/* Save some important PCI state. */
>	cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
>	command = pci_read_config(dev, BGE_PCI_CMD, 4);
>
>	pci_write_config(dev, BGE_PCI_MISC_CTL,
>	    BGE_PCIMISCCTL_INDIRECT_ACCESS | BGE_PCIMISCCTL_MASK_PCI_INTR |
>	    BGE_HIF_SWAP_OPTIONS | BGE_PCIMISCCTL_PCISTATE_RW, 4);
>
>	/* Disable fastboot on controllers that support it. */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5752 ||
>	    BGE_IS_5755_PLUS(sc)) {
>		if (bootverbose)
>			device_printf(dev, "Disabling fastboot\n");
>		CSR_WRITE_4(sc, BGE_FASTBOOT_PC, 0x0);
>	}
>
>	/*
>	 * Write the magic number to SRAM at offset 0xB50.
>	 * When firmware finishes its initialization it will
>	 * write ~BGE_SRAM_FW_MB_MAGIC to the same location.
>	 */
>	bge_writemem_ind(sc, BGE_SRAM_FW_MB, BGE_SRAM_FW_MB_MAGIC);
>
>	reset = BGE_MISCCFG_RESET_CORE_CLOCKS | BGE_32BITTIME_66MHZ;
>
>	/* XXX: Broadcom Linux driver. */
>	if (sc->bge_flags & BGE_FLAG_PCIE) {
>		if (sc->bge_asicrev != BGE_ASICREV_BCM5785 &&
>		    (sc->bge_flags & BGE_FLAG_5717_PLUS) == 0) {
>			if (CSR_READ_4(sc, 0x7E2C) == 0x60)	/* PCIE 1.0 */
>				CSR_WRITE_4(sc, 0x7E2C, 0x20);
>		}
>		if (sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
>			/* Prevent PCIE link training during global reset */
>			CSR_WRITE_4(sc, BGE_MISC_CFG, 1 << 29);
>			reset |= 1 << 29;
>		}
>	}
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
>		val = CSR_READ_4(sc, BGE_VCPU_STATUS);
>		CSR_WRITE_4(sc, BGE_VCPU_STATUS,
>		    val | BGE_VCPU_STATUS_DRV_RESET);
>		val = CSR_READ_4(sc, BGE_VCPU_EXT_CTRL);
>		CSR_WRITE_4(sc, BGE_VCPU_EXT_CTRL,
>		    val & ~BGE_VCPU_EXT_CTRL_HALT_CPU);
>	}
>
>	/*
>	 * Set GPHY Power Down Override to leave GPHY
>	 * powered up in D0 uninitialized.
>	 */
>	if (BGE_IS_5705_PLUS(sc) &&
>	    (sc->bge_flags & BGE_FLAG_CPMU_PRESENT) == 0)
>		reset |= BGE_MISCCFG_GPHY_PD_OVERRIDE;
>
>	/* Issue global reset */
>	write_op(sc, BGE_MISC_CFG, reset);
>
>	if (sc->bge_flags & BGE_FLAG_PCIE)
>		DELAY(100 * 1000);
>	else
>		DELAY(1000);
>
>	/* XXX: Broadcom Linux driver. */
>	if (sc->bge_flags & BGE_FLAG_PCIE) {
>		if (sc->bge_chipid == BGE_CHIPID_BCM5750_A0) {
>			DELAY(500000); /* wait for link training to complete */
>			val = pci_read_config(dev, 0xC4, 4);
>			pci_write_config(dev, 0xC4, val | (1 << 15), 4);
>		}
>		devctl = pci_read_config(dev,
>		    sc->bge_expcap + PCIER_DEVICE_CTL, 2);
>		/* Clear enable no snoop and disable relaxed ordering. */
>		devctl &= ~(PCIEM_CTL_RELAXED_ORD_ENABLE |
>		    PCIEM_CTL_NOSNOOP_ENABLE);
>		pci_write_config(dev, sc->bge_expcap + PCIER_DEVICE_CTL,
>		    devctl, 2);
>		pci_set_max_read_req(dev, sc->bge_expmrq);
>		/* Clear error status. */
>		pci_write_config(dev, sc->bge_expcap + PCIER_DEVICE_STA,
>		    PCIEM_STA_CORRECTABLE_ERROR |
>		    PCIEM_STA_NON_FATAL_ERROR | PCIEM_STA_FATAL_ERROR |
>		    PCIEM_STA_UNSUPPORTED_REQ, 2);
>	}
>
>	/* Reset some of the PCI state that got zapped by reset. */
>	pci_write_config(dev, BGE_PCI_MISC_CTL,
>	    BGE_PCIMISCCTL_INDIRECT_ACCESS | BGE_PCIMISCCTL_MASK_PCI_INTR |
>	    BGE_HIF_SWAP_OPTIONS | BGE_PCIMISCCTL_PCISTATE_RW, 4);
>	val = BGE_PCISTATE_ROM_ENABLE | BGE_PCISTATE_ROM_RETRY_ENABLE;
>	if (sc->bge_chipid == BGE_CHIPID_BCM5704_A0 &&
>	    (sc->bge_flags & BGE_FLAG_PCIX) != 0)
>		val |= BGE_PCISTATE_RETRY_SAME_DMA;
>	if ((sc->bge_mfw_flags & BGE_MFW_ON_APE) != 0)
>		val |= BGE_PCISTATE_ALLOW_APE_CTLSPC_WR |
>		    BGE_PCISTATE_ALLOW_APE_SHMEM_WR |
>		    BGE_PCISTATE_ALLOW_APE_PSPACE_WR;
>	pci_write_config(dev, BGE_PCI_PCISTATE, val, 4);
>	pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
>	pci_write_config(dev, BGE_PCI_CMD, command, 4);
>	/*
>	 * Disable PCI-X relaxed ordering to ensure status block update
>	 * comes first then packet buffer DMA. Otherwise driver may
>	 * read stale status block.
>	 */
>	if (sc->bge_flags & BGE_FLAG_PCIX) {
>		devctl = pci_read_config(dev,
>		    sc->bge_pcixcap + PCIXR_COMMAND, 2);
>		devctl &= ~PCIXM_COMMAND_ERO;
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5703) {
>			devctl &= ~PCIXM_COMMAND_MAX_READ;
>			devctl |= PCIXM_COMMAND_MAX_READ_2048;
>		} else if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
>			devctl &= ~(PCIXM_COMMAND_MAX_SPLITS |
>			    PCIXM_COMMAND_MAX_READ);
>			devctl |= PCIXM_COMMAND_MAX_READ_2048;
>		}
>		pci_write_config(dev, sc->bge_pcixcap + PCIXR_COMMAND,
>		    devctl, 2);
>	}
>	/* Re-enable MSI, if necessary, and enable the memory arbiter. */
>	if (BGE_IS_5714_FAMILY(sc)) {
>		/* This chip disables MSI on reset. */
>		if (sc->bge_flags & BGE_FLAG_MSI) {
>			val = pci_read_config(dev,
>			    sc->bge_msicap + PCIR_MSI_CTRL, 2);
>			pci_write_config(dev,
>			    sc->bge_msicap + PCIR_MSI_CTRL,
>			    val | PCIM_MSICTRL_MSI_ENABLE, 2);
>			val = CSR_READ_4(sc, BGE_MSI_MODE);
>			CSR_WRITE_4(sc, BGE_MSI_MODE,
>			    val | BGE_MSIMODE_ENABLE);
>		}
>		val = CSR_READ_4(sc, BGE_MARB_MODE);
>		CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE | val);
>	} else
>		CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
>
>	/* Fix up byte swapping. */
>	CSR_WRITE_4(sc, BGE_MODE_CTL, bge_dma_swap_options(sc));
>
>	val = CSR_READ_4(sc, BGE_MAC_MODE);
>	val = (val & ~mac_mode_mask) | mac_mode;
>	CSR_WRITE_4(sc, BGE_MAC_MODE, val);
>	DELAY(40);
>
>	bge_ape_unlock(sc, BGE_APE_LOCK_GRC);
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
>		for (i = 0; i < BGE_TIMEOUT; i++) {
>			val = CSR_READ_4(sc, BGE_VCPU_STATUS);
>			if (val & BGE_VCPU_STATUS_INIT_DONE)
>				break;
>			DELAY(100);
>		}
>		if (i == BGE_TIMEOUT) {
>			device_printf(dev, "reset timed out\n");
>			return (1);
>		}
>	} else {
>		/*
>		 * Poll until we see the 1's complement of the magic number.
>		 * This indicates that the firmware initialization is complete.
>		 * We expect this to fail if no chip containing the Ethernet
>		 * address is fitted though.
>		 */
>		for (i = 0; i < BGE_TIMEOUT; i++) {
>			DELAY(10);
>			val = bge_readmem_ind(sc, BGE_SRAM_FW_MB);
>			if (val == ~BGE_SRAM_FW_MB_MAGIC)
>				break;
>		}
>
>		if ((sc->bge_flags & BGE_FLAG_EADDR) && i == BGE_TIMEOUT)
>			device_printf(dev,
>			    "firmware handshake timed out, found 0x%08x\n",
>			    val);
>		/* BCM57765 A0 needs additional time before accessing. */
>		if (sc->bge_chipid == BGE_CHIPID_BCM57765_A0)
>			DELAY(10 * 1000);	/* XXX */
>	}
>
>	/*
>	 * The 5704 in TBI mode apparently needs some special
>	 * adjustment to insure the SERDES drive level is set
>	 * to 1.2V.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5704 &&
>	    sc->bge_flags & BGE_FLAG_TBI) {
>		val = CSR_READ_4(sc, BGE_SERDES_CFG);
>		val = (val & ~0xFFF) | 0x880;
>		CSR_WRITE_4(sc, BGE_SERDES_CFG, val);
>	}
>
>	/* XXX: Broadcom Linux driver. */
>	if (sc->bge_flags & BGE_FLAG_PCIE &&
>	    !BGE_IS_5717_PLUS(sc) &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5750_A0 &&
>	    sc->bge_asicrev != BGE_ASICREV_BCM5785) {
>		/* Enable Data FIFO protection. */
>		val = CSR_READ_4(sc, 0x7C00);
>		CSR_WRITE_4(sc, 0x7C00, val | (1 << 25));
>	}
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5720)
>		BGE_CLRBIT(sc, BGE_CPMU_CLCK_ORIDE,
>		    CPMU_CLCK_ORIDE_MAC_ORIDE_EN);
>
>	return (0);
>}
>
>static __inline void
>bge_rxreuse_std(struct bge_softc *sc, int i)
>{
>	struct bge_rx_bd *r;
>
>	r = &sc->bge_ldata.bge_rx_std_ring[sc->bge_std];
>	r->bge_flags = BGE_RXBDFLAG_END;
>	r->bge_len = sc->bge_cdata.bge_rx_std_seglen[i];
>	r->bge_idx = i;
>	BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
>}
>
>static __inline void
>bge_rxreuse_jumbo(struct bge_softc *sc, int i)
>{
>	struct bge_extrx_bd *r;
>
>	r = &sc->bge_ldata.bge_rx_jumbo_ring[sc->bge_jumbo];
>	r->bge_flags = BGE_RXBDFLAG_JUMBO_RING | BGE_RXBDFLAG_END;
>	r->bge_len0 = sc->bge_cdata.bge_rx_jumbo_seglen[i][0];
>	r->bge_len1 = sc->bge_cdata.bge_rx_jumbo_seglen[i][1];
>	r->bge_len2 = sc->bge_cdata.bge_rx_jumbo_seglen[i][2];
>	r->bge_len3 = sc->bge_cdata.bge_rx_jumbo_seglen[i][3];
>	r->bge_idx = i;
>	BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
>}
>
>/*
> * Frame reception handling. This is called if there's a frame
> * on the receive return list.
> *
> * Note: we have to be able to handle two possibilities here:
> * 1) the frame is from the jumbo receive ring
> * 2) the frame is from the standard receive ring
> */
>
>static int
>bge_rxeof(struct bge_softc *sc, uint16_t rx_prod, int holdlck)
>{
>	if_t ifp;
>	int rx_npkts = 0, stdcnt = 0, jumbocnt = 0;
>	uint16_t rx_cons;
>
>	rx_cons = sc->bge_rx_saved_considx;
>
>	/* Nothing to do. */
>	if (rx_cons == rx_prod)
>		return (rx_npkts);
>
>	ifp = sc->bge_ifp;
>
>	bus_dmamap_sync(sc->bge_cdata.bge_rx_return_ring_tag,
>	    sc->bge_cdata.bge_rx_return_ring_map, BUS_DMASYNC_POSTREAD);
>	bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
>	    sc->bge_cdata.bge_rx_std_ring_map, BUS_DMASYNC_POSTWRITE);
>	if (BGE_IS_JUMBO_CAPABLE(sc) &&
>	    if_getmtu(ifp) + ETHER_HDR_LEN + ETHER_CRC_LEN + 
>	    ETHER_VLAN_ENCAP_LEN > (MCLBYTES - ETHER_ALIGN))
>		bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
>		    sc->bge_cdata.bge_rx_jumbo_ring_map, BUS_DMASYNC_POSTWRITE);
>
>	while (rx_cons != rx_prod) {
>		struct bge_rx_bd	*cur_rx;
>		uint32_t		rxidx;
>		struct mbuf		*m = NULL;
>		uint16_t		vlan_tag = 0;
>		int			have_tag = 0;
>
>#ifdef DEVICE_POLLING
>		if (if_getcapenable(ifp) & IFCAP_POLLING) {
>			if (sc->rxcycles <= 0)
>				break;
>			sc->rxcycles--;
>		}
>#endif
>
>		cur_rx = &sc->bge_ldata.bge_rx_return_ring[rx_cons];
>
>		rxidx = cur_rx->bge_idx;
>		BGE_INC(rx_cons, sc->bge_return_ring_cnt);
>
>		if (if_getcapenable(ifp) & IFCAP_VLAN_HWTAGGING &&
>		    cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
>			have_tag = 1;
>			vlan_tag = cur_rx->bge_vlan_tag;
>		}
>
>		if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
>			jumbocnt++;
>			m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx];
>			if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
>				bge_rxreuse_jumbo(sc, rxidx);
>				continue;
>			}
>			if (bge_newbuf_jumbo(sc, rxidx) != 0) {
>				bge_rxreuse_jumbo(sc, rxidx);
>				if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
>				continue;
>			}
>			BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
>		} else {
>			stdcnt++;
>			m = sc->bge_cdata.bge_rx_std_chain[rxidx];
>			if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
>				bge_rxreuse_std(sc, rxidx);
>				continue;
>			}
>			if (bge_newbuf_std(sc, rxidx) != 0) {
>				bge_rxreuse_std(sc, rxidx);
>				if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
>				continue;
>			}
>			BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
>		}
>
>		if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
>#ifndef __NO_STRICT_ALIGNMENT
>		/*
>		 * For architectures with strict alignment we must make sure
>		 * the payload is aligned.
>		 */
>		if (sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) {
>			bcopy(m->m_data, m->m_data + ETHER_ALIGN,
>			    cur_rx->bge_len);
>			m->m_data += ETHER_ALIGN;
>		}
>#endif
>		m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
>		m->m_pkthdr.rcvif = ifp;
>
>		if (if_getcapenable(ifp) & IFCAP_RXCSUM)
>			bge_rxcsum(sc, cur_rx, m);
>
>		/*
>		 * If we received a packet with a vlan tag,
>		 * attach that information to the packet.
>		 */
>		if (have_tag) {
>			m->m_pkthdr.ether_vtag = vlan_tag;
>			m->m_flags |= M_VLANTAG;
>		}
>
>		if (holdlck != 0) {
>			BGE_UNLOCK(sc);
>			if_input(ifp, m);
>			BGE_LOCK(sc);
>		} else
>			if_input(ifp, m);
>		rx_npkts++;
>
>		if (!(if_getdrvflags(ifp) & IFF_DRV_RUNNING))
>			return (rx_npkts);
>	}
>
>	bus_dmamap_sync(sc->bge_cdata.bge_rx_return_ring_tag,
>	    sc->bge_cdata.bge_rx_return_ring_map, BUS_DMASYNC_PREREAD);
>	if (stdcnt > 0)
>		bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
>		    sc->bge_cdata.bge_rx_std_ring_map, BUS_DMASYNC_PREWRITE);
>
>	if (jumbocnt > 0)
>		bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
>		    sc->bge_cdata.bge_rx_jumbo_ring_map, BUS_DMASYNC_PREWRITE);
>
>	sc->bge_rx_saved_considx = rx_cons;
>	bge_writembx(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx);
>	if (stdcnt)
>		bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, (sc->bge_std +
>		    BGE_STD_RX_RING_CNT - 1) % BGE_STD_RX_RING_CNT);
>	if (jumbocnt)
>		bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, (sc->bge_jumbo +
>		    BGE_JUMBO_RX_RING_CNT - 1) % BGE_JUMBO_RX_RING_CNT);
>#ifdef notyet
>	/*
>	 * This register wraps very quickly under heavy packet drops.
>	 * If you need correct statistics, you can enable this check.
>	 */
>	if (BGE_IS_5705_PLUS(sc))
>		if_incierrors(ifp, CSR_READ_4(sc, BGE_RXLP_LOCSTAT_IFIN_DROPS));
>#endif
>	return (rx_npkts);
>}
>
>static void
>bge_rxcsum(struct bge_softc *sc, struct bge_rx_bd *cur_rx, struct mbuf *m)
>{
>
>	if (BGE_IS_5717_PLUS(sc)) {
>		if ((cur_rx->bge_flags & BGE_RXBDFLAG_IPV6) == 0) {
>			if (cur_rx->bge_flags & BGE_RXBDFLAG_IP_CSUM) {
>				m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
>				if ((cur_rx->bge_error_flag &
>				    BGE_RXERRFLAG_IP_CSUM_NOK) == 0)
>					m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
>			}
>			if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
>				m->m_pkthdr.csum_data =
>				    cur_rx->bge_tcp_udp_csum;
>				m->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
>				    CSUM_PSEUDO_HDR;
>			}
>		}
>	} else {
>		if (cur_rx->bge_flags & BGE_RXBDFLAG_IP_CSUM) {
>			m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
>			if ((cur_rx->bge_ip_csum ^ 0xFFFF) == 0)
>				m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
>		}
>		if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM &&
>		    m->m_pkthdr.len >= ETHER_MIN_NOPAD) {
>			m->m_pkthdr.csum_data =
>			    cur_rx->bge_tcp_udp_csum;
>			m->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
>			    CSUM_PSEUDO_HDR;
>		}
>	}
>}
>
>static void
>bge_txeof(struct bge_softc *sc, uint16_t tx_cons)
>{
>	struct bge_tx_bd *cur_tx;
>	if_t ifp;
>
>	BGE_LOCK_ASSERT(sc);
>
>	/* Nothing to do. */
>	if (sc->bge_tx_saved_considx == tx_cons)
>		return;
>
>	ifp = sc->bge_ifp;
>
>	bus_dmamap_sync(sc->bge_cdata.bge_tx_ring_tag,
>	    sc->bge_cdata.bge_tx_ring_map, BUS_DMASYNC_POSTWRITE);
>	/*
>	 * Go through our tx ring and free mbufs for those
>	 * frames that have been sent.
>	 */
>	while (sc->bge_tx_saved_considx != tx_cons) {
>		uint32_t		idx;
>
>		idx = sc->bge_tx_saved_considx;
>		cur_tx = &sc->bge_ldata.bge_tx_ring[idx];
>		if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
>			if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
>		if (sc->bge_cdata.bge_tx_chain[idx] != NULL) {
>			bus_dmamap_sync(sc->bge_cdata.bge_tx_mtag,
>			    sc->bge_cdata.bge_tx_dmamap[idx],
>			    BUS_DMASYNC_POSTWRITE);
>			bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag,
>			    sc->bge_cdata.bge_tx_dmamap[idx]);
>			m_freem(sc->bge_cdata.bge_tx_chain[idx]);
>			sc->bge_cdata.bge_tx_chain[idx] = NULL;
>		}
>		sc->bge_txcnt--;
>		BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT);
>	}
>
>	if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE);
>	if (sc->bge_txcnt == 0)
>		sc->bge_timer = 0;
>}
>
>#ifdef DEVICE_POLLING
>static int
>bge_poll(if_t ifp, enum poll_cmd cmd, int count)
>{
>	struct bge_softc *sc = if_getsoftc(ifp);
>	uint16_t rx_prod, tx_cons;
>	uint32_t statusword;
>	int rx_npkts = 0;
>
>	BGE_LOCK(sc);
>	if (!(if_getdrvflags(ifp) & IFF_DRV_RUNNING)) {
>		BGE_UNLOCK(sc);
>		return (rx_npkts);
>	}
>
>	bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>	    sc->bge_cdata.bge_status_map,
>	    BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
>	/* Fetch updates from the status block. */
>	rx_prod = sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx;
>	tx_cons = sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx;
>
>	statusword = sc->bge_ldata.bge_status_block->bge_status;
>	/* Clear the status so the next pass only sees the changes. */
>	sc->bge_ldata.bge_status_block->bge_status = 0;
>
>	bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>	    sc->bge_cdata.bge_status_map,
>	    BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
>
>	/* Note link event. It will be processed by POLL_AND_CHECK_STATUS. */
>	if (statusword & BGE_STATFLAG_LINKSTATE_CHANGED)
>		sc->bge_link_evt++;
>
>	if (cmd == POLL_AND_CHECK_STATUS)
>		if ((sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
>		    sc->bge_chipid != BGE_CHIPID_BCM5700_B2) ||
>		    sc->bge_link_evt || (sc->bge_flags & BGE_FLAG_TBI))
>			bge_link_upd(sc);
>
>	sc->rxcycles = count;
>	rx_npkts = bge_rxeof(sc, rx_prod, 1);
>	if (!(if_getdrvflags(ifp) & IFF_DRV_RUNNING)) {
>		BGE_UNLOCK(sc);
>		return (rx_npkts);
>	}
>	bge_txeof(sc, tx_cons);
>	if (!if_sendq_empty(ifp))
>		bge_start_locked(ifp);
>
>	BGE_UNLOCK(sc);
>	return (rx_npkts);
>}
>#endif /* DEVICE_POLLING */
>
>static int
>bge_msi_intr(void *arg)
>{
>	struct bge_softc *sc;
>
>	sc = (struct bge_softc *)arg;
>	/*
>	 * This interrupt is not shared and controller already
>	 * disabled further interrupt.
>	 */
>	taskqueue_enqueue(sc->bge_tq, &sc->bge_intr_task);
>	return (FILTER_HANDLED);
>}
>
>static void
>bge_intr_task(void *arg, int pending)
>{
>	struct bge_softc *sc;
>	if_t ifp;
>	uint32_t status, status_tag;
>	uint16_t rx_prod, tx_cons;
>
>	sc = (struct bge_softc *)arg;
>	ifp = sc->bge_ifp;
>
>	BGE_LOCK(sc);
>	if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0) {
>		BGE_UNLOCK(sc);
>		return;
>	}
>
>	/* Get updated status block. */
>	bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>	    sc->bge_cdata.bge_status_map,
>	    BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
>
>	/* Save producer/consumer indices. */
>	rx_prod = sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx;
>	tx_cons = sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx;
>	status = sc->bge_ldata.bge_status_block->bge_status;
>	status_tag = sc->bge_ldata.bge_status_block->bge_status_tag << 24;
>	/* Dirty the status flag. */
>	sc->bge_ldata.bge_status_block->bge_status = 0;
>	bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>	    sc->bge_cdata.bge_status_map,
>	    BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
>	if ((sc->bge_flags & BGE_FLAG_TAGGED_STATUS) == 0)
>		status_tag = 0;
>
>	if ((status & BGE_STATFLAG_LINKSTATE_CHANGED) != 0)
>		bge_link_upd(sc);
>
>	/* Let controller work. */
>	bge_writembx(sc, BGE_MBX_IRQ0_LO, status_tag);
>
>	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING &&
>	    sc->bge_rx_saved_considx != rx_prod) {
>		/* Check RX return ring producer/consumer. */
>		BGE_UNLOCK(sc);
>		bge_rxeof(sc, rx_prod, 0);
>		BGE_LOCK(sc);
>	}
>	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
>		/* Check TX ring producer/consumer. */
>		bge_txeof(sc, tx_cons);
>		if (!if_sendq_empty(ifp))
>			bge_start_locked(ifp);
>	}
>	BGE_UNLOCK(sc);
>}
>
>static void
>bge_intr(void *xsc)
>{
>	struct bge_softc *sc;
>	if_t ifp;
>	uint32_t statusword;
>	uint16_t rx_prod, tx_cons;
>
>	sc = xsc;
>
>	BGE_LOCK(sc);
>
>	ifp = sc->bge_ifp;
>
>#ifdef DEVICE_POLLING
>	if (if_getcapenable(ifp) & IFCAP_POLLING) {
>		BGE_UNLOCK(sc);
>		return;
>	}
>#endif
>
>	/*
>	 * Ack the interrupt by writing something to BGE_MBX_IRQ0_LO.  Don't
>	 * disable interrupts by writing nonzero like we used to, since with
>	 * our current organization this just gives complications and
>	 * pessimizations for re-enabling interrupts.  We used to have races
>	 * instead of the necessary complications.  Disabling interrupts
>	 * would just reduce the chance of a status update while we are
>	 * running (by switching to the interrupt-mode coalescence
>	 * parameters), but this chance is already very low so it is more
>	 * efficient to get another interrupt than prevent it.
>	 *
>	 * We do the ack first to ensure another interrupt if there is a
>	 * status update after the ack.  We don't check for the status
>	 * changing later because it is more efficient to get another
>	 * interrupt than prevent it, not quite as above (not checking is
>	 * a smaller optimization than not toggling the interrupt enable,
>	 * since checking doesn't involve PCI accesses and toggling require
>	 * the status check).  So toggling would probably be a pessimization
>	 * even with MSI.  It would only be needed for using a task queue.
>	 */
>	bge_writembx(sc, BGE_MBX_IRQ0_LO, 0);
>
>	/*
>	 * Do the mandatory PCI flush as well as get the link status.
>	 */
>	statusword = CSR_READ_4(sc, BGE_MAC_STS) & BGE_MACSTAT_LINK_CHANGED;
>
>	/* Make sure the descriptor ring indexes are coherent. */
>	bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>	    sc->bge_cdata.bge_status_map,
>	    BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
>	rx_prod = sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx;
>	tx_cons = sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx;
>	sc->bge_ldata.bge_status_block->bge_status = 0;
>	bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>	    sc->bge_cdata.bge_status_map,
>	    BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
>
>	if ((sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5700_B2) ||
>	    statusword || sc->bge_link_evt)
>		bge_link_upd(sc);
>
>	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
>		/* Check RX return ring producer/consumer. */
>		bge_rxeof(sc, rx_prod, 1);
>	}
>
>	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
>		/* Check TX ring producer/consumer. */
>		bge_txeof(sc, tx_cons);
>	}
>
>	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING &&
>	    !if_sendq_empty(ifp))
>		bge_start_locked(ifp);
>
>	BGE_UNLOCK(sc);
>}
>
>static void
>bge_asf_driver_up(struct bge_softc *sc)
>{
>	if (sc->bge_asf_mode & ASF_STACKUP) {
>		/* Send ASF heartbeat aprox. every 2s */
>		if (sc->bge_asf_count)
>			sc->bge_asf_count --;
>		else {
>			sc->bge_asf_count = 2;
>			bge_writemem_ind(sc, BGE_SRAM_FW_CMD_MB,
>			    BGE_FW_CMD_DRV_ALIVE);
>			bge_writemem_ind(sc, BGE_SRAM_FW_CMD_LEN_MB, 4);
>			bge_writemem_ind(sc, BGE_SRAM_FW_CMD_DATA_MB,
>			    BGE_FW_HB_TIMEOUT_SEC);
>			CSR_WRITE_4(sc, BGE_RX_CPU_EVENT,
>			    CSR_READ_4(sc, BGE_RX_CPU_EVENT) |
>			    BGE_RX_CPU_DRV_EVENT);
>		}
>	}
>}
>
>static void
>bge_tick(void *xsc)
>{
>	struct bge_softc *sc = xsc;
>	struct mii_data *mii = NULL;
>
>	BGE_LOCK_ASSERT(sc);
>
>	/* Synchronize with possible callout reset/stop. */
>	if (callout_pending(&sc->bge_stat_ch) ||
>	    !callout_active(&sc->bge_stat_ch))
>		return;
>
>	if (BGE_IS_5705_PLUS(sc))
>		bge_stats_update_regs(sc);
>	else
>		bge_stats_update(sc);
>
>	/* XXX Add APE heartbeat check here? */
>
>	if ((sc->bge_flags & BGE_FLAG_TBI) == 0) {
>		mii = device_get_softc(sc->bge_miibus);
>		/*
>		 * Do not touch PHY if we have link up. This could break
>		 * IPMI/ASF mode or produce extra input errors
>		 * (extra errors was reported for bcm5701 & bcm5704).
>		 */
>		if (!sc->bge_link)
>			mii_tick(mii);
>	} else {
>		/*
>		 * Since in TBI mode auto-polling can't be used we should poll
>		 * link status manually. Here we register pending link event
>		 * and trigger interrupt.
>		 */
>#ifdef DEVICE_POLLING
>		/* In polling mode we poll link state in bge_poll(). */
>		if (!(if_getcapenable(sc->bge_ifp) & IFCAP_POLLING))
>#endif
>		{
>		sc->bge_link_evt++;
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5700 ||
>		    sc->bge_flags & BGE_FLAG_5788)
>			BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
>		else
>			BGE_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
>		}
>	}
>
>	bge_asf_driver_up(sc);
>	bge_watchdog(sc);
>
>	callout_reset(&sc->bge_stat_ch, hz, bge_tick, sc);
>}
>
>static void
>bge_stats_update_regs(struct bge_softc *sc)
>{
>	if_t ifp;
>	struct bge_mac_stats *stats;
>	uint32_t val;
>
>	ifp = sc->bge_ifp;
>	stats = &sc->bge_mac_stats;
>
>	stats->ifHCOutOctets +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_OCTETS);
>	stats->etherStatsCollisions +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_COLLS);
>	stats->outXonSent +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_XON_SENT);
>	stats->outXoffSent +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_XOFF_SENT);
>	stats->dot3StatsInternalMacTransmitErrors +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_ERRORS);
>	stats->dot3StatsSingleCollisionFrames +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_SINGLE_COLL);
>	stats->dot3StatsMultipleCollisionFrames +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_MULTI_COLL);
>	stats->dot3StatsDeferredTransmissions +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_DEFERRED);
>	stats->dot3StatsExcessiveCollisions +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_EXCESS_COLL);
>	stats->dot3StatsLateCollisions +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_LATE_COLL);
>	stats->ifHCOutUcastPkts +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_UCAST);
>	stats->ifHCOutMulticastPkts +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_MCAST);
>	stats->ifHCOutBroadcastPkts +=
>	    CSR_READ_4(sc, BGE_TX_MAC_STATS_BCAST);
>
>	stats->ifHCInOctets +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_OCTESTS);
>	stats->etherStatsFragments +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_FRAGMENTS);
>	stats->ifHCInUcastPkts +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_UCAST);
>	stats->ifHCInMulticastPkts +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_MCAST);
>	stats->ifHCInBroadcastPkts +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_BCAST);
>	stats->dot3StatsFCSErrors +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_FCS_ERRORS);
>	stats->dot3StatsAlignmentErrors +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_ALGIN_ERRORS);
>	stats->xonPauseFramesReceived +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_XON_RCVD);
>	stats->xoffPauseFramesReceived +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_XOFF_RCVD);
>	stats->macControlFramesReceived +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_CTRL_RCVD);
>	stats->xoffStateEntered +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_XOFF_ENTERED);
>	stats->dot3StatsFramesTooLong +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_FRAME_TOO_LONG);
>	stats->etherStatsJabbers +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_JABBERS);
>	stats->etherStatsUndersizePkts +=
>	    CSR_READ_4(sc, BGE_RX_MAC_STATS_UNDERSIZE);
>
>	stats->FramesDroppedDueToFilters +=
>	    CSR_READ_4(sc, BGE_RXLP_LOCSTAT_FILTDROP);
>	stats->DmaWriteQueueFull +=
>	    CSR_READ_4(sc, BGE_RXLP_LOCSTAT_DMA_WRQ_FULL);
>	stats->DmaWriteHighPriQueueFull +=
>	    CSR_READ_4(sc, BGE_RXLP_LOCSTAT_DMA_HPWRQ_FULL);
>	stats->NoMoreRxBDs +=
>	    CSR_READ_4(sc, BGE_RXLP_LOCSTAT_OUT_OF_BDS);
>	/*
>	 * XXX
>	 * Unlike other controllers, BGE_RXLP_LOCSTAT_IFIN_DROPS
>	 * counter of BCM5717, BCM5718, BCM5719 A0 and BCM5720 A0
>	 * includes number of unwanted multicast frames.  This comes
>	 * from silicon bug and known workaround to get rough(not
>	 * exact) counter is to enable interrupt on MBUF low water
>	 * attention.  This can be accomplished by setting
>	 * BGE_HCCMODE_ATTN bit of BGE_HCC_MODE,
>	 * BGE_BMANMODE_LOMBUF_ATTN bit of BGE_BMAN_MODE and
>	 * BGE_MODECTL_FLOWCTL_ATTN_INTR bit of BGE_MODE_CTL.
>	 * However that change would generate more interrupts and
>	 * there are still possibilities of losing multiple frames
>	 * during BGE_MODECTL_FLOWCTL_ATTN_INTR interrupt handling.
>	 * Given that the workaround still would not get correct
>	 * counter I don't think it's worth to implement it.  So
>	 * ignore reading the counter on controllers that have the
>	 * silicon bug.
>	 */
>	if (sc->bge_asicrev != BGE_ASICREV_BCM5717 &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5719_A0 &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5720_A0)
>		stats->InputDiscards +=
>		    CSR_READ_4(sc, BGE_RXLP_LOCSTAT_IFIN_DROPS);
>	stats->InputErrors +=
>	    CSR_READ_4(sc, BGE_RXLP_LOCSTAT_IFIN_ERRORS);
>	stats->RecvThresholdHit +=
>	    CSR_READ_4(sc, BGE_RXLP_LOCSTAT_RXTHRESH_HIT);
>
>	if (sc->bge_flags & BGE_FLAG_RDMA_BUG) {
>		/*
>		 * If controller transmitted more than BGE_NUM_RDMA_CHANNELS
>		 * frames, it's safe to disable workaround for DMA engine's
>		 * miscalculation of TXMBUF space.
>		 */
>		if (stats->ifHCOutUcastPkts + stats->ifHCOutMulticastPkts +
>		    stats->ifHCOutBroadcastPkts > BGE_NUM_RDMA_CHANNELS) {
>			val = CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL);
>			if (sc->bge_asicrev == BGE_ASICREV_BCM5719)
>				val &= ~BGE_RDMA_TX_LENGTH_WA_5719;
>			else
>				val &= ~BGE_RDMA_TX_LENGTH_WA_5720;
>			CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL, val);
>			sc->bge_flags &= ~BGE_FLAG_RDMA_BUG;
>		}
>	}
>}
>
>static void
>bge_stats_clear_regs(struct bge_softc *sc)
>{
>
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_OCTETS);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_COLLS);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_XON_SENT);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_XOFF_SENT);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_ERRORS);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_SINGLE_COLL);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_MULTI_COLL);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_DEFERRED);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_EXCESS_COLL);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_LATE_COLL);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_UCAST);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_MCAST);
>	CSR_READ_4(sc, BGE_TX_MAC_STATS_BCAST);
>
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_OCTESTS);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_FRAGMENTS);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_UCAST);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_MCAST);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_BCAST);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_FCS_ERRORS);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_ALGIN_ERRORS);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_XON_RCVD);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_XOFF_RCVD);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_CTRL_RCVD);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_XOFF_ENTERED);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_FRAME_TOO_LONG);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_JABBERS);
>	CSR_READ_4(sc, BGE_RX_MAC_STATS_UNDERSIZE);
>
>	CSR_READ_4(sc, BGE_RXLP_LOCSTAT_FILTDROP);
>	CSR_READ_4(sc, BGE_RXLP_LOCSTAT_DMA_WRQ_FULL);
>	CSR_READ_4(sc, BGE_RXLP_LOCSTAT_DMA_HPWRQ_FULL);
>	CSR_READ_4(sc, BGE_RXLP_LOCSTAT_OUT_OF_BDS);
>	CSR_READ_4(sc, BGE_RXLP_LOCSTAT_IFIN_DROPS);
>	CSR_READ_4(sc, BGE_RXLP_LOCSTAT_IFIN_ERRORS);
>	CSR_READ_4(sc, BGE_RXLP_LOCSTAT_RXTHRESH_HIT);
>}
>
>static void
>bge_stats_update(struct bge_softc *sc)
>{
>	if_t ifp;
>	bus_size_t stats;
>	uint32_t cnt;	/* current register value */
>
>	ifp = sc->bge_ifp;
>
>	stats = BGE_MEMWIN_START + BGE_STATS_BLOCK;
>
>#define	READ_STAT(sc, stats, stat) \
>	CSR_READ_4(sc, stats + offsetof(struct bge_stats, stat))
>
>	cnt = READ_STAT(sc, stats, txstats.etherStatsCollisions.bge_addr_lo);
>	if_inc_counter(ifp, IFCOUNTER_COLLISIONS, cnt - sc->bge_tx_collisions);
>	sc->bge_tx_collisions = cnt;
>
>	cnt = READ_STAT(sc, stats, nicNoMoreRxBDs.bge_addr_lo);
>	if_inc_counter(ifp, IFCOUNTER_IERRORS, cnt - sc->bge_rx_nobds);
>	sc->bge_rx_nobds = cnt;
>	cnt = READ_STAT(sc, stats, ifInErrors.bge_addr_lo);
>	if_inc_counter(ifp, IFCOUNTER_IERRORS, cnt - sc->bge_rx_inerrs);
>	sc->bge_rx_inerrs = cnt;
>	cnt = READ_STAT(sc, stats, ifInDiscards.bge_addr_lo);
>	if_inc_counter(ifp, IFCOUNTER_IERRORS, cnt - sc->bge_rx_discards);
>	sc->bge_rx_discards = cnt;
>
>	cnt = READ_STAT(sc, stats, txstats.ifOutDiscards.bge_addr_lo);
>	if_inc_counter(ifp, IFCOUNTER_OERRORS, cnt - sc->bge_tx_discards);
>	sc->bge_tx_discards = cnt;
>
>#undef	READ_STAT
>}
>
>/*
> * Pad outbound frame to ETHER_MIN_NOPAD for an unusual reason.
> * The bge hardware will pad out Tx runts to ETHER_MIN_NOPAD,
> * but when such padded frames employ the bge IP/TCP checksum offload,
> * the hardware checksum assist gives incorrect results (possibly
> * from incorporating its own padding into the UDP/TCP checksum; who knows).
> * If we pad such runts with zeros, the onboard checksum comes out correct.
> */
>static __inline int
>bge_cksum_pad(struct mbuf *m)
>{
>	int padlen = ETHER_MIN_NOPAD - m->m_pkthdr.len;
>	struct mbuf *last;
>
>	/* If there's only the packet-header and we can pad there, use it. */
>	if (m->m_pkthdr.len == m->m_len && M_WRITABLE(m) &&
>	    M_TRAILINGSPACE(m) >= padlen) {
>		last = m;
>	} else {
>		/*
>		 * Walk packet chain to find last mbuf. We will either
>		 * pad there, or append a new mbuf and pad it.
>		 */
>		for (last = m; last->m_next != NULL; last = last->m_next);
>		if (!(M_WRITABLE(last) && M_TRAILINGSPACE(last) >= padlen)) {
>			/* Allocate new empty mbuf, pad it. Compact later. */
>			struct mbuf *n;
>
>			MGET(n, M_NOWAIT, MT_DATA);
>			if (n == NULL)
>				return (ENOBUFS);
>			n->m_len = 0;
>			last->m_next = n;
>			last = n;
>		}
>	}
>
>	/* Now zero the pad area, to avoid the bge cksum-assist bug. */
>	memset(mtod(last, caddr_t) + last->m_len, 0, padlen);
>	last->m_len += padlen;
>	m->m_pkthdr.len += padlen;
>
>	return (0);
>}
>
>static struct mbuf *
>bge_check_short_dma(struct mbuf *m)
>{
>	struct mbuf *n;
>	int found;
>
>	/*
>	 * If device receive two back-to-back send BDs with less than
>	 * or equal to 8 total bytes then the device may hang.  The two
>	 * back-to-back send BDs must in the same frame for this failure
>	 * to occur.  Scan mbuf chains and see whether two back-to-back
>	 * send BDs are there. If this is the case, allocate new mbuf
>	 * and copy the frame to workaround the silicon bug.
>	 */
>	for (n = m, found = 0; n != NULL; n = n->m_next) {
>		if (n->m_len < 8) {
>			found++;
>			if (found > 1)
>				break;
>			continue;
>		}
>		found = 0;
>	}
>
>	if (found > 1) {
>		n = m_defrag(m, M_NOWAIT);
>		if (n == NULL)
>			m_freem(m);
>	} else
>		n = m;
>	return (n);
>}
>
>static struct mbuf *
>bge_setup_tso(struct bge_softc *sc, struct mbuf *m, uint16_t *mss,
>    uint16_t *flags)
>{
>	struct ip *ip;
>	struct tcphdr *tcp;
>	struct mbuf *n;
>	uint16_t hlen;
>	uint32_t poff;
>
>	if (M_WRITABLE(m) == 0) {
>		/* Get a writable copy. */
>		n = m_dup(m, M_NOWAIT);
>		m_freem(m);
>		if (n == NULL)
>			return (NULL);
>		m = n;
>	}
>	m = m_pullup(m, sizeof(struct ether_header) + sizeof(struct ip));
>	if (m == NULL)
>		return (NULL);
>	ip = (struct ip *)(mtod(m, char *) + sizeof(struct ether_header));
>	poff = sizeof(struct ether_header) + (ip->ip_hl << 2);
>	m = m_pullup(m, poff + sizeof(struct tcphdr));
>	if (m == NULL)
>		return (NULL);
>	tcp = (struct tcphdr *)(mtod(m, char *) + poff);
>	m = m_pullup(m, poff + (tcp->th_off << 2));
>	if (m == NULL)
>		return (NULL);
>	/*
>	 * It seems controller doesn't modify IP length and TCP pseudo
>	 * checksum. These checksum computed by upper stack should be 0.
>	 */
>	*mss = m->m_pkthdr.tso_segsz;
>	ip = (struct ip *)(mtod(m, char *) + sizeof(struct ether_header));
>	ip->ip_sum = 0;
>	ip->ip_len = htons(*mss + (ip->ip_hl << 2) + (tcp->th_off << 2));
>	/* Clear pseudo checksum computed by TCP stack. */
>	tcp = (struct tcphdr *)(mtod(m, char *) + poff);
>	tcp->th_sum = 0;
>	/*
>	 * Broadcom controllers uses different descriptor format for
>	 * TSO depending on ASIC revision. Due to TSO-capable firmware
>	 * license issue and lower performance of firmware based TSO
>	 * we only support hardware based TSO.
>	 */
>	/* Calculate header length, incl. TCP/IP options, in 32 bit units. */
>	hlen = ((ip->ip_hl << 2) + (tcp->th_off << 2)) >> 2;
>	if (sc->bge_flags & BGE_FLAG_TSO3) {
>		/*
>		 * For BCM5717 and newer controllers, hardware based TSO
>		 * uses the 14 lower bits of the bge_mss field to store the
>		 * MSS and the upper 2 bits to store the lowest 2 bits of
>		 * the IP/TCP header length.  The upper 6 bits of the header
>		 * length are stored in the bge_flags[14:10,4] field.  Jumbo
>		 * frames are supported.
>		 */
>		*mss |= ((hlen & 0x3) << 14);
>		*flags |= ((hlen & 0xF8) << 7) | ((hlen & 0x4) << 2);
>	} else {
>		/*
>		 * For BCM5755 and newer controllers, hardware based TSO uses
>		 * the lower 11	bits to store the MSS and the upper 5 bits to
>		 * store the IP/TCP header length. Jumbo frames are not
>		 * supported.
>		 */
>		*mss |= (hlen << 11);
>	}
>	return (m);
>}
>
>/*
> * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
> * pointers to descriptors.
> */
>static int
>bge_encap(struct bge_softc *sc, struct mbuf **m_head, uint32_t *txidx)
>{
>	bus_dma_segment_t	segs[BGE_NSEG_NEW];
>	bus_dmamap_t		map;
>	struct bge_tx_bd	*d;
>	struct mbuf		*m = *m_head;
>	uint32_t		idx = *txidx;
>	uint16_t		csum_flags, mss, vlan_tag;
>	int			nsegs, i, error;
>
>	csum_flags = 0;
>	mss = 0;
>	vlan_tag = 0;
>	if ((sc->bge_flags & BGE_FLAG_SHORT_DMA_BUG) != 0 &&
>	    m->m_next != NULL) {
>		*m_head = bge_check_short_dma(m);
>		if (*m_head == NULL)
>			return (ENOBUFS);
>		m = *m_head;
>	}
>	if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
>		*m_head = m = bge_setup_tso(sc, m, &mss, &csum_flags);
>		if (*m_head == NULL)
>			return (ENOBUFS);
>		csum_flags |= BGE_TXBDFLAG_CPU_PRE_DMA |
>		    BGE_TXBDFLAG_CPU_POST_DMA;
>	} else if ((m->m_pkthdr.csum_flags & sc->bge_csum_features) != 0) {
>		if (m->m_pkthdr.csum_flags & CSUM_IP)
>			csum_flags |= BGE_TXBDFLAG_IP_CSUM;
>		if (m->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP)) {
>			csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
>			if (m->m_pkthdr.len < ETHER_MIN_NOPAD &&
>			    (error = bge_cksum_pad(m)) != 0) {
>				m_freem(m);
>				*m_head = NULL;
>				return (error);
>			}
>		}
>	}
>
>	if ((m->m_pkthdr.csum_flags & CSUM_TSO) == 0) {
>		if (sc->bge_flags & BGE_FLAG_JUMBO_FRAME &&
>		    m->m_pkthdr.len > ETHER_MAX_LEN)
>			csum_flags |= BGE_TXBDFLAG_JUMBO_FRAME;
>		if (sc->bge_forced_collapse > 0 &&
>		    (sc->bge_flags & BGE_FLAG_PCIE) != 0 && m->m_next != NULL) {
>			/*
>			 * Forcedly collapse mbuf chains to overcome hardware
>			 * limitation which only support a single outstanding
>			 * DMA read operation.
>			 */
>			if (sc->bge_forced_collapse == 1)
>				m = m_defrag(m, M_NOWAIT);
>			else
>				m = m_collapse(m, M_NOWAIT,
>				    sc->bge_forced_collapse);
>			if (m == NULL)
>				m = *m_head;
>			*m_head = m;
>		}
>	}
>
>	map = sc->bge_cdata.bge_tx_dmamap[idx];
>	error = bus_dmamap_load_mbuf_sg(sc->bge_cdata.bge_tx_mtag, map, m, segs,
>	    &nsegs, BUS_DMA_NOWAIT);
>	if (error == EFBIG) {
>		m = m_collapse(m, M_NOWAIT, BGE_NSEG_NEW);
>		if (m == NULL) {
>			m_freem(*m_head);
>			*m_head = NULL;
>			return (ENOBUFS);
>		}
>		*m_head = m;
>		error = bus_dmamap_load_mbuf_sg(sc->bge_cdata.bge_tx_mtag, map,
>		    m, segs, &nsegs, BUS_DMA_NOWAIT);
>		if (error) {
>			m_freem(m);
>			*m_head = NULL;
>			return (error);
>		}
>	} else if (error != 0)
>		return (error);
>
>	/* Check if we have enough free send BDs. */
>	if (sc->bge_txcnt + nsegs >= BGE_TX_RING_CNT) {
>		bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag, map);
>		return (ENOBUFS);
>	}
>
>	bus_dmamap_sync(sc->bge_cdata.bge_tx_mtag, map, BUS_DMASYNC_PREWRITE);
>
>	if (m->m_flags & M_VLANTAG) {
>		csum_flags |= BGE_TXBDFLAG_VLAN_TAG;
>		vlan_tag = m->m_pkthdr.ether_vtag;
>	}
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5762 &&
>	    (m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
>		/*
>		 * 5725 family of devices corrupts TSO packets when TSO DMA
>		 * buffers cross into regions which are within MSS bytes of
>		 * a 4GB boundary.  If we encounter the condition, drop the
>		 * packet.
>		 */
>		for (i = 0; ; i++) {
>			d = &sc->bge_ldata.bge_tx_ring[idx];
>			d->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[i].ds_addr);
>			d->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[i].ds_addr);
>			d->bge_len = segs[i].ds_len;
>			if (d->bge_addr.bge_addr_lo + segs[i].ds_len + mss <
>			    d->bge_addr.bge_addr_lo)
>				break;
>			d->bge_flags = csum_flags;
>			d->bge_vlan_tag = vlan_tag;
>			d->bge_mss = mss;
>			if (i == nsegs - 1)
>				break;
>			BGE_INC(idx, BGE_TX_RING_CNT);
>		}
>		if (i != nsegs - 1) {
>			bus_dmamap_sync(sc->bge_cdata.bge_tx_mtag, map,
>			    BUS_DMASYNC_POSTWRITE);
>			bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag, map);
>			m_freem(*m_head);
>			*m_head = NULL;
>			return (EIO);
>		}
>	} else {
>		for (i = 0; ; i++) {
>			d = &sc->bge_ldata.bge_tx_ring[idx];
>			d->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[i].ds_addr);
>			d->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[i].ds_addr);
>			d->bge_len = segs[i].ds_len;
>			d->bge_flags = csum_flags;
>			d->bge_vlan_tag = vlan_tag;
>			d->bge_mss = mss;
>			if (i == nsegs - 1)
>				break;
>			BGE_INC(idx, BGE_TX_RING_CNT);
>		}
>	}
>
>	/* Mark the last segment as end of packet... */
>	d->bge_flags |= BGE_TXBDFLAG_END;
>
>	/*
>	 * Insure that the map for this transmission
>	 * is placed at the array index of the last descriptor
>	 * in this chain.
>	 */
>	sc->bge_cdata.bge_tx_dmamap[*txidx] = sc->bge_cdata.bge_tx_dmamap[idx];
>	sc->bge_cdata.bge_tx_dmamap[idx] = map;
>	sc->bge_cdata.bge_tx_chain[idx] = m;
>	sc->bge_txcnt += nsegs;
>
>	BGE_INC(idx, BGE_TX_RING_CNT);
>	*txidx = idx;
>
>	return (0);
>}
>
>/*
> * Main transmit routine. To avoid having to do mbuf copies, we put pointers
> * to the mbuf data regions directly in the transmit descriptors.
> */
>static void
>bge_start_locked(if_t ifp)
>{
>	struct bge_softc *sc;
>	struct mbuf *m_head;
>	uint32_t prodidx;
>	int count;
>
>	sc = if_getsoftc(ifp);
>	BGE_LOCK_ASSERT(sc);
>
>	if (!sc->bge_link ||
>	    (if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
>	    IFF_DRV_RUNNING)
>		return;
>
>	prodidx = sc->bge_tx_prodidx;
>
>	for (count = 0; !if_sendq_empty(ifp);) {
>		if (sc->bge_txcnt > BGE_TX_RING_CNT - 16) {
>			if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0);
>			break;
>		}
>		m_head = if_dequeue(ifp);
>		if (m_head == NULL)
>			break;
>
>		/*
>		 * Pack the data into the transmit ring. If we
>		 * don't have room, set the OACTIVE flag and wait
>		 * for the NIC to drain the ring.
>		 */
>		if (bge_encap(sc, &m_head, &prodidx)) {
>			if (m_head == NULL)
>				break;
>			if_sendq_prepend(ifp, m_head);
>			if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0);
>			break;
>		}
>		++count;
>
>		/*
>		 * If there's a BPF listener, bounce a copy of this frame
>		 * to him.
>		 */
>		if_bpfmtap(ifp, m_head);
>	}
>
>	if (count > 0) {
>		bus_dmamap_sync(sc->bge_cdata.bge_tx_ring_tag,
>		    sc->bge_cdata.bge_tx_ring_map, BUS_DMASYNC_PREWRITE);
>		/* Transmit. */
>		bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
>		/* 5700 b2 errata */
>		if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
>			bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
>
>		sc->bge_tx_prodidx = prodidx;
>
>		/*
>		 * Set a timeout in case the chip goes out to lunch.
>		 */
>		sc->bge_timer = BGE_TX_TIMEOUT;
>	}
>}
>
>/*
> * Main transmit routine. To avoid having to do mbuf copies, we put pointers
> * to the mbuf data regions directly in the transmit descriptors.
> */
>static void
>bge_start(if_t ifp)
>{
>	struct bge_softc *sc;
>
>	sc = if_getsoftc(ifp);
>	BGE_LOCK(sc);
>	bge_start_locked(ifp);
>	BGE_UNLOCK(sc);
>}
>
>static void
>bge_init_locked(struct bge_softc *sc)
>{
>	if_t ifp;
>	uint16_t *m;
>	uint32_t mode;
>
>	BGE_LOCK_ASSERT(sc);
>
>	ifp = sc->bge_ifp;
>
>	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING)
>		return;
>
>	/* Cancel pending I/O and flush buffers. */
>	bge_stop(sc);
>
>	bge_stop_fw(sc);
>	bge_sig_pre_reset(sc, BGE_RESET_START);
>	bge_reset(sc);
>	bge_sig_legacy(sc, BGE_RESET_START);
>	bge_sig_post_reset(sc, BGE_RESET_START);
>
>	bge_chipinit(sc);
>
>	/*
>	 * Init the various state machines, ring
>	 * control blocks and firmware.
>	 */
>	if (bge_blockinit(sc)) {
>		device_printf(sc->bge_dev, "initialization failure\n");
>		return;
>	}
>
>	ifp = sc->bge_ifp;
>
>	/* Specify MTU. */
>	CSR_WRITE_4(sc, BGE_RX_MTU, if_getmtu(ifp) +
>	    ETHER_HDR_LEN + ETHER_CRC_LEN +
>	    (if_getcapenable(ifp) & IFCAP_VLAN_MTU ? ETHER_VLAN_ENCAP_LEN : 0));
>
>	/* Load our MAC address. */
>	m = (uint16_t *)IF_LLADDR(sc->bge_ifp);
>	CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
>	CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
>
>	/* Program promiscuous mode. */
>	bge_setpromisc(sc);
>
>	/* Program multicast filter. */
>	bge_setmulti(sc);
>
>	/* Program VLAN tag stripping. */
>	bge_setvlan(sc);
>
>	/* Override UDP checksum offloading. */
>	if (sc->bge_forced_udpcsum == 0)
>		sc->bge_csum_features &= ~CSUM_UDP;
>	else
>		sc->bge_csum_features |= CSUM_UDP;
>	if (if_getcapabilities(ifp) & IFCAP_TXCSUM &&
>	    if_getcapenable(ifp) & IFCAP_TXCSUM) {
>		if_sethwassistbits(ifp, 0, (BGE_CSUM_FEATURES | CSUM_UDP));
>		if_sethwassistbits(ifp, sc->bge_csum_features, 0);
>	}
>
>	/* Init RX ring. */
>	if (bge_init_rx_ring_std(sc) != 0) {
>		device_printf(sc->bge_dev, "no memory for std Rx buffers.\n");
>		bge_stop(sc);
>		return;
>	}
>
>	/*
>	 * Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's
>	 * memory to insure that the chip has in fact read the first
>	 * entry of the ring.
>	 */
>	if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) {
>		uint32_t		v, i;
>		for (i = 0; i < 10; i++) {
>			DELAY(20);
>			v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8);
>			if (v == (MCLBYTES - ETHER_ALIGN))
>				break;
>		}
>		if (i == 10)
>			device_printf (sc->bge_dev,
>			    "5705 A0 chip failed to load RX ring\n");
>	}
>
>	/* Init jumbo RX ring. */
>	if (BGE_IS_JUMBO_CAPABLE(sc) &&
>	    if_getmtu(ifp) + ETHER_HDR_LEN + ETHER_CRC_LEN + 
>     	    ETHER_VLAN_ENCAP_LEN > (MCLBYTES - ETHER_ALIGN)) {
>		if (bge_init_rx_ring_jumbo(sc) != 0) {
>			device_printf(sc->bge_dev,
>			    "no memory for jumbo Rx buffers.\n");
>			bge_stop(sc);
>			return;
>		}
>	}
>
>	/* Init our RX return ring index. */
>	sc->bge_rx_saved_considx = 0;
>
>	/* Init our RX/TX stat counters. */
>	sc->bge_rx_discards = sc->bge_tx_discards = sc->bge_tx_collisions = 0;
>
>	/* Init TX ring. */
>	bge_init_tx_ring(sc);
>
>	/* Enable TX MAC state machine lockup fix. */
>	mode = CSR_READ_4(sc, BGE_TX_MODE);
>	if (BGE_IS_5755_PLUS(sc) || sc->bge_asicrev == BGE_ASICREV_BCM5906)
>		mode |= BGE_TXMODE_MBUF_LOCKUP_FIX;
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5720 ||
>	    sc->bge_asicrev == BGE_ASICREV_BCM5762) {
>		mode &= ~(BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
>		mode |= CSR_READ_4(sc, BGE_TX_MODE) &
>		    (BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
>	}
>	/* Turn on transmitter. */
>	CSR_WRITE_4(sc, BGE_TX_MODE, mode | BGE_TXMODE_ENABLE);
>	DELAY(100);
>
>	/* Turn on receiver. */
>	mode = CSR_READ_4(sc, BGE_RX_MODE);
>	if (BGE_IS_5755_PLUS(sc))
>		mode |= BGE_RXMODE_IPV6_ENABLE;
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5762)
>		mode |= BGE_RXMODE_IPV4_FRAG_FIX;
>	CSR_WRITE_4(sc,BGE_RX_MODE, mode | BGE_RXMODE_ENABLE);
>	DELAY(10);
>
>	/*
>	 * Set the number of good frames to receive after RX MBUF
>	 * Low Watermark has been reached. After the RX MAC receives
>	 * this number of frames, it will drop subsequent incoming
>	 * frames until the MBUF High Watermark is reached.
>	 */
>	if (BGE_IS_57765_PLUS(sc))
>		CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 1);
>	else
>		CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 2);
>
>	/* Clear MAC statistics. */
>	if (BGE_IS_5705_PLUS(sc))
>		bge_stats_clear_regs(sc);
>
>	/* Tell firmware we're alive. */
>	BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
>
>#ifdef DEVICE_POLLING
>	/* Disable interrupts if we are polling. */
>	if (if_getcapenable(ifp) & IFCAP_POLLING) {
>		BGE_SETBIT(sc, BGE_PCI_MISC_CTL,
>		    BGE_PCIMISCCTL_MASK_PCI_INTR);
>		bge_writembx(sc, BGE_MBX_IRQ0_LO, 1);
>	} else
>#endif
>
>	/* Enable host interrupts. */
>	{
>	BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA);
>	BGE_CLRBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
>	bge_writembx(sc, BGE_MBX_IRQ0_LO, 0);
>	}
>
>	if_setdrvflagbits(ifp, IFF_DRV_RUNNING, 0);
>	if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE);
>
>	bge_ifmedia_upd_locked(ifp);
>
>	callout_reset(&sc->bge_stat_ch, hz, bge_tick, sc);
>}
>
>static void
>bge_init(void *xsc)
>{
>	struct bge_softc *sc = xsc;
>
>	BGE_LOCK(sc);
>	bge_init_locked(sc);
>	BGE_UNLOCK(sc);
>}
>
>/*
> * Set media options.
> */
>static int
>bge_ifmedia_upd(if_t ifp)
>{
>	struct bge_softc *sc = if_getsoftc(ifp);
>	int res;
>
>	BGE_LOCK(sc);
>	res = bge_ifmedia_upd_locked(ifp);
>	BGE_UNLOCK(sc);
>
>	return (res);
>}
>
>static int
>bge_ifmedia_upd_locked(if_t ifp)
>{
>	struct bge_softc *sc = if_getsoftc(ifp);
>	struct mii_data *mii;
>	struct mii_softc *miisc;
>	struct ifmedia *ifm;
>
>	BGE_LOCK_ASSERT(sc);
>
>	ifm = &sc->bge_ifmedia;
>
>	/* If this is a 1000baseX NIC, enable the TBI port. */
>	if (sc->bge_flags & BGE_FLAG_TBI) {
>		if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
>			return (EINVAL);
>		switch(IFM_SUBTYPE(ifm->ifm_media)) {
>		case IFM_AUTO:
>			/*
>			 * The BCM5704 ASIC appears to have a special
>			 * mechanism for programming the autoneg
>			 * advertisement registers in TBI mode.
>			 */
>			if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
>				uint32_t sgdig;
>				sgdig = CSR_READ_4(sc, BGE_SGDIG_STS);
>				if (sgdig & BGE_SGDIGSTS_DONE) {
>					CSR_WRITE_4(sc, BGE_TX_TBI_AUTONEG, 0);
>					sgdig = CSR_READ_4(sc, BGE_SGDIG_CFG);
>					sgdig |= BGE_SGDIGCFG_AUTO |
>					    BGE_SGDIGCFG_PAUSE_CAP |
>					    BGE_SGDIGCFG_ASYM_PAUSE;
>					CSR_WRITE_4(sc, BGE_SGDIG_CFG,
>					    sgdig | BGE_SGDIGCFG_SEND);
>					DELAY(5);
>					CSR_WRITE_4(sc, BGE_SGDIG_CFG, sgdig);
>				}
>			}
>			break;
>		case IFM_1000_SX:
>			if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
>				BGE_CLRBIT(sc, BGE_MAC_MODE,
>				    BGE_MACMODE_HALF_DUPLEX);
>			} else {
>				BGE_SETBIT(sc, BGE_MAC_MODE,
>				    BGE_MACMODE_HALF_DUPLEX);
>			}
>			DELAY(40);
>			break;
>		default:
>			return (EINVAL);
>		}
>		return (0);
>	}
>
>	sc->bge_link_evt++;
>	mii = device_get_softc(sc->bge_miibus);
>	LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
>		PHY_RESET(miisc);
>	mii_mediachg(mii);
>
>	/*
>	 * Force an interrupt so that we will call bge_link_upd
>	 * if needed and clear any pending link state attention.
>	 * Without this we are not getting any further interrupts
>	 * for link state changes and thus will not UP the link and
>	 * not be able to send in bge_start_locked. The only
>	 * way to get things working was to receive a packet and
>	 * get an RX intr.
>	 * bge_tick should help for fiber cards and we might not
>	 * need to do this here if BGE_FLAG_TBI is set but as
>	 * we poll for fiber anyway it should not harm.
>	 */
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5700 ||
>	    sc->bge_flags & BGE_FLAG_5788)
>		BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
>	else
>		BGE_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
>
>	return (0);
>}
>
>/*
> * Report current media status.
> */
>static void
>bge_ifmedia_sts(if_t ifp, struct ifmediareq *ifmr)
>{
>	struct bge_softc *sc = if_getsoftc(ifp);
>	struct mii_data *mii;
>
>	BGE_LOCK(sc);
>
>	if ((if_getflags(ifp) & IFF_UP) == 0) {
>		BGE_UNLOCK(sc);
>		return;
>	}
>	if (sc->bge_flags & BGE_FLAG_TBI) {
>		ifmr->ifm_status = IFM_AVALID;
>		ifmr->ifm_active = IFM_ETHER;
>		if (CSR_READ_4(sc, BGE_MAC_STS) &
>		    BGE_MACSTAT_TBI_PCS_SYNCHED)
>			ifmr->ifm_status |= IFM_ACTIVE;
>		else {
>			ifmr->ifm_active |= IFM_NONE;
>			BGE_UNLOCK(sc);
>			return;
>		}
>		ifmr->ifm_active |= IFM_1000_SX;
>		if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
>			ifmr->ifm_active |= IFM_HDX;
>		else
>			ifmr->ifm_active |= IFM_FDX;
>		BGE_UNLOCK(sc);
>		return;
>	}
>
>	mii = device_get_softc(sc->bge_miibus);
>	mii_pollstat(mii);
>	ifmr->ifm_active = mii->mii_media_active;
>	ifmr->ifm_status = mii->mii_media_status;
>
>	BGE_UNLOCK(sc);
>}
>
>static int
>bge_ioctl(if_t ifp, u_long command, caddr_t data)
>{
>	struct bge_softc *sc = if_getsoftc(ifp);
>	struct ifreq *ifr = (struct ifreq *) data;
>	struct mii_data *mii;
>	int flags, mask, error = 0;
>
>	switch (command) {
>	case SIOCSIFMTU:
>		if (BGE_IS_JUMBO_CAPABLE(sc) ||
>		    (sc->bge_flags & BGE_FLAG_JUMBO_STD)) {
>			if (ifr->ifr_mtu < ETHERMIN ||
>			    ifr->ifr_mtu > BGE_JUMBO_MTU) {
>				error = EINVAL;
>				break;
>			}
>		} else if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) {
>			error = EINVAL;
>			break;
>		}
>		BGE_LOCK(sc);
>		if (if_getmtu(ifp) != ifr->ifr_mtu) {
>			if_setmtu(ifp, ifr->ifr_mtu);
>			if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
>				if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING);
>				bge_init_locked(sc);
>			}
>		}
>		BGE_UNLOCK(sc);
>		break;
>	case SIOCSIFFLAGS:
>		BGE_LOCK(sc);
>		if (if_getflags(ifp) & IFF_UP) {
>			/*
>			 * If only the state of the PROMISC flag changed,
>			 * then just use the 'set promisc mode' command
>			 * instead of reinitializing the entire NIC. Doing
>			 * a full re-init means reloading the firmware and
>			 * waiting for it to start up, which may take a
>			 * second or two.  Similarly for ALLMULTI.
>			 */
>			if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
>				flags = if_getflags(ifp) ^ sc->bge_if_flags;
>				if (flags & IFF_PROMISC)
>					bge_setpromisc(sc);
>				if (flags & IFF_ALLMULTI)
>					bge_setmulti(sc);
>			} else
>				bge_init_locked(sc);
>		} else {
>			if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
>				bge_stop(sc);
>			}
>		}
>		sc->bge_if_flags = if_getflags(ifp);
>		BGE_UNLOCK(sc);
>		error = 0;
>		break;
>	case SIOCADDMULTI:
>	case SIOCDELMULTI:
>		if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
>			BGE_LOCK(sc);
>			bge_setmulti(sc);
>			BGE_UNLOCK(sc);
>			error = 0;
>		}
>		break;
>	case SIOCSIFMEDIA:
>	case SIOCGIFMEDIA:
>		if (sc->bge_flags & BGE_FLAG_TBI) {
>			error = ifmedia_ioctl(ifp, ifr,
>			    &sc->bge_ifmedia, command);
>		} else {
>			mii = device_get_softc(sc->bge_miibus);
>			error = ifmedia_ioctl(ifp, ifr,
>			    &mii->mii_media, command);
>		}
>		break;
>	case SIOCSIFCAP:
>		mask = ifr->ifr_reqcap ^ if_getcapenable(ifp);
>#ifdef DEVICE_POLLING
>		if (mask & IFCAP_POLLING) {
>			if (ifr->ifr_reqcap & IFCAP_POLLING) {
>				error = ether_poll_register(bge_poll, ifp);
>				if (error)
>					return (error);
>				BGE_LOCK(sc);
>				BGE_SETBIT(sc, BGE_PCI_MISC_CTL,
>				    BGE_PCIMISCCTL_MASK_PCI_INTR);
>				bge_writembx(sc, BGE_MBX_IRQ0_LO, 1);
>				if_setcapenablebit(ifp, IFCAP_POLLING, 0);
>				BGE_UNLOCK(sc);
>			} else {
>				error = ether_poll_deregister(ifp);
>				/* Enable interrupt even in error case */
>				BGE_LOCK(sc);
>				BGE_CLRBIT(sc, BGE_PCI_MISC_CTL,
>				    BGE_PCIMISCCTL_MASK_PCI_INTR);
>				bge_writembx(sc, BGE_MBX_IRQ0_LO, 0);
>				if_setcapenablebit(ifp, 0, IFCAP_POLLING);
>				BGE_UNLOCK(sc);
>			}
>		}
>#endif
>		if ((mask & IFCAP_TXCSUM) != 0 &&
>		    (if_getcapabilities(ifp) & IFCAP_TXCSUM) != 0) {
>			if_togglecapenable(ifp, IFCAP_TXCSUM);
>			if ((if_getcapenable(ifp) & IFCAP_TXCSUM) != 0)
>				if_sethwassistbits(ifp,
>				    sc->bge_csum_features, 0);
>			else
>				if_sethwassistbits(ifp, 0,
>				    sc->bge_csum_features);
>		}
>
>		if ((mask & IFCAP_RXCSUM) != 0 &&
>		    (if_getcapabilities(ifp) & IFCAP_RXCSUM) != 0)
>			if_togglecapenable(ifp, IFCAP_RXCSUM);
>
>		if ((mask & IFCAP_TSO4) != 0 &&
>		    (if_getcapabilities(ifp) & IFCAP_TSO4) != 0) {
>			if_togglecapenable(ifp, IFCAP_TSO4);
>			if ((if_getcapenable(ifp) & IFCAP_TSO4) != 0)
>				if_sethwassistbits(ifp, CSUM_TSO, 0);
>			else
>				if_sethwassistbits(ifp, 0, CSUM_TSO);
>		}
>
>		if (mask & IFCAP_VLAN_MTU) {
>			if_togglecapenable(ifp, IFCAP_VLAN_MTU);
>			if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING);
>			bge_init(sc);
>		}
>
>		if ((mask & IFCAP_VLAN_HWTSO) != 0 &&
>		    (if_getcapabilities(ifp) & IFCAP_VLAN_HWTSO) != 0)
>			if_togglecapenable(ifp, IFCAP_VLAN_HWTSO);
>		if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
>		    (if_getcapabilities(ifp) & IFCAP_VLAN_HWTAGGING) != 0) {
>			if_togglecapenable(ifp, IFCAP_VLAN_HWTAGGING);
>			if ((if_getcapenable(ifp) & IFCAP_VLAN_HWTAGGING) == 0)
>				if_setcapenablebit(ifp, 0, IFCAP_VLAN_HWTSO);
>			BGE_LOCK(sc);
>			bge_setvlan(sc);
>			BGE_UNLOCK(sc);
>		}
>#ifdef VLAN_CAPABILITIES
>		if_vlancap(ifp);
>#endif
>		break;
>	default:
>		error = ether_ioctl(ifp, command, data);
>		break;
>	}
>
>	return (error);
>}
>
>static void
>bge_watchdog(struct bge_softc *sc)
>{
>	if_t ifp;
>	uint32_t status;
>
>	BGE_LOCK_ASSERT(sc);
>
>	if (sc->bge_timer == 0 || --sc->bge_timer)
>		return;
>
>	/* If pause frames are active then don't reset the hardware. */
>	if ((CSR_READ_4(sc, BGE_RX_MODE) & BGE_RXMODE_FLOWCTL_ENABLE) != 0) {
>		status = CSR_READ_4(sc, BGE_RX_STS);
>		if ((status & BGE_RXSTAT_REMOTE_XOFFED) != 0) {
>			/*
>			 * If link partner has us in XOFF state then wait for
>			 * the condition to clear.
>			 */
>			CSR_WRITE_4(sc, BGE_RX_STS, status);
>			sc->bge_timer = BGE_TX_TIMEOUT;
>			return;
>		} else if ((status & BGE_RXSTAT_RCVD_XOFF) != 0 &&
>		    (status & BGE_RXSTAT_RCVD_XON) != 0) {
>			/*
>			 * If link partner has us in XOFF state then wait for
>			 * the condition to clear.
>			 */
>			CSR_WRITE_4(sc, BGE_RX_STS, status);
>			sc->bge_timer = BGE_TX_TIMEOUT;
>			return;
>		}
>		/*
>		 * Any other condition is unexpected and the controller
>		 * should be reset.
>		 */
>	}
>
>	ifp = sc->bge_ifp;
>
>	if_printf(ifp, "watchdog timeout -- resetting\n");
>
>	if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING);
>	bge_init_locked(sc);
>
>	if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
>}
>
>static void
>bge_stop_block(struct bge_softc *sc, bus_size_t reg, uint32_t bit)
>{
>	int i;
>
>	BGE_CLRBIT(sc, reg, bit);
>
>	for (i = 0; i < BGE_TIMEOUT; i++) {
>		if ((CSR_READ_4(sc, reg) & bit) == 0)
>			return;
>		DELAY(100);
>        }
>}
>
>/*
> * Stop the adapter and free any mbufs allocated to the
> * RX and TX lists.
> */
>static void
>bge_stop(struct bge_softc *sc)
>{
>	if_t ifp;
>
>	BGE_LOCK_ASSERT(sc);
>
>	ifp = sc->bge_ifp;
>
>	callout_stop(&sc->bge_stat_ch);
>
>	/* Disable host interrupts. */
>	BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
>	bge_writembx(sc, BGE_MBX_IRQ0_LO, 1);
>
>	/*
>	 * Tell firmware we're shutting down.
>	 */
>	bge_stop_fw(sc);
>	bge_sig_pre_reset(sc, BGE_RESET_SHUTDOWN);
>
>	/*
>	 * Disable all of the receiver blocks.
>	 */
>	bge_stop_block(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
>	bge_stop_block(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
>	bge_stop_block(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
>	if (BGE_IS_5700_FAMILY(sc))
>		bge_stop_block(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
>	bge_stop_block(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
>	bge_stop_block(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
>	bge_stop_block(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
>
>	/*
>	 * Disable all of the transmit blocks.
>	 */
>	bge_stop_block(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
>	bge_stop_block(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
>	bge_stop_block(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
>	bge_stop_block(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
>	bge_stop_block(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
>	if (BGE_IS_5700_FAMILY(sc))
>		bge_stop_block(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
>	bge_stop_block(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
>
>	/*
>	 * Shut down all of the memory managers and related
>	 * state machines.
>	 */
>	bge_stop_block(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
>	bge_stop_block(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
>	if (BGE_IS_5700_FAMILY(sc))
>		bge_stop_block(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
>
>	CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
>	CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
>	if (!(BGE_IS_5705_PLUS(sc))) {
>		BGE_CLRBIT(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE);
>		BGE_CLRBIT(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
>	}
>	/* Update MAC statistics. */
>	if (BGE_IS_5705_PLUS(sc))
>		bge_stats_update_regs(sc);
>
>	bge_reset(sc);
>	bge_sig_legacy(sc, BGE_RESET_SHUTDOWN);
>	bge_sig_post_reset(sc, BGE_RESET_SHUTDOWN);
>
>	/*
>	 * Keep the ASF firmware running if up.
>	 */
>	if (sc->bge_asf_mode & ASF_STACKUP)
>		BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
>	else
>		BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
>
>	/* Free the RX lists. */
>	bge_free_rx_ring_std(sc);
>
>	/* Free jumbo RX list. */
>	if (BGE_IS_JUMBO_CAPABLE(sc))
>		bge_free_rx_ring_jumbo(sc);
>
>	/* Free TX buffers. */
>	bge_free_tx_ring(sc);
>
>	sc->bge_tx_saved_considx = BGE_TXCONS_UNSET;
>
>	/* Clear MAC's link state (PHY may still have link UP). */
>	if (bootverbose && sc->bge_link)
>		if_printf(sc->bge_ifp, "link DOWN\n");
>	sc->bge_link = 0;
>
>	if_setdrvflagbits(ifp, 0, (IFF_DRV_RUNNING | IFF_DRV_OACTIVE));
>}
>
>/*
> * Stop all chip I/O so that the kernel's probe routines don't
> * get confused by errant DMAs when rebooting.
> */
>static int
>bge_shutdown(device_t dev)
>{
>	struct bge_softc *sc;
>
>	sc = device_get_softc(dev);
>	BGE_LOCK(sc);
>	bge_stop(sc);
>   bge_setwol(sc);
>	BGE_UNLOCK(sc);
>
>	return (0);
>}
>
>static int
>bge_suspend(device_t dev)
>{
>	struct bge_softc *sc;
>
>	sc = device_get_softc(dev);
>	BGE_LOCK(sc);
>	bge_stop(sc);
>	BGE_UNLOCK(sc);
>
>	return (0);
>}
>
>static int
>bge_resume(device_t dev)
>{
>	struct bge_softc *sc;
>	if_t ifp;
>
>	sc = device_get_softc(dev);
>	BGE_LOCK(sc);
>	ifp = sc->bge_ifp;
>	if (if_getflags(ifp) & IFF_UP) {
>		bge_init_locked(sc);
>		if (if_getdrvflags(ifp) & IFF_DRV_RUNNING)
>			bge_start_locked(ifp);
>	}
>	BGE_UNLOCK(sc);
>
>	return (0);
>}
>
>static void
>bge_link_upd(struct bge_softc *sc)
>{
>	struct mii_data *mii;
>	uint32_t link, status;
>
>	BGE_LOCK_ASSERT(sc);
>
>	/* Clear 'pending link event' flag. */
>	sc->bge_link_evt = 0;
>
>	/*
>	 * Process link state changes.
>	 * Grrr. The link status word in the status block does
>	 * not work correctly on the BCM5700 rev AX and BX chips,
>	 * according to all available information. Hence, we have
>	 * to enable MII interrupts in order to properly obtain
>	 * async link changes. Unfortunately, this also means that
>	 * we have to read the MAC status register to detect link
>	 * changes, thereby adding an additional register access to
>	 * the interrupt handler.
>	 *
>	 * XXX: perhaps link state detection procedure used for
>	 * BGE_CHIPID_BCM5700_B2 can be used for others BCM5700 revisions.
>	 */
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
>	    sc->bge_chipid != BGE_CHIPID_BCM5700_B2) {
>		status = CSR_READ_4(sc, BGE_MAC_STS);
>		if (status & BGE_MACSTAT_MI_INTERRUPT) {
>			mii = device_get_softc(sc->bge_miibus);
>			mii_pollstat(mii);
>			if (!sc->bge_link &&
>			    mii->mii_media_status & IFM_ACTIVE &&
>			    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
>				sc->bge_link++;
>				if (bootverbose)
>					if_printf(sc->bge_ifp, "link UP\n");
>			} else if (sc->bge_link &&
>			    (!(mii->mii_media_status & IFM_ACTIVE) ||
>			    IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
>				sc->bge_link = 0;
>				if (bootverbose)
>					if_printf(sc->bge_ifp, "link DOWN\n");
>			}
>
>			/* Clear the interrupt. */
>			CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
>			    BGE_EVTENB_MI_INTERRUPT);
>			bge_miibus_readreg(sc->bge_dev, sc->bge_phy_addr,
>			    BRGPHY_MII_ISR);
>			bge_miibus_writereg(sc->bge_dev, sc->bge_phy_addr,
>			    BRGPHY_MII_IMR, BRGPHY_INTRS);
>		}
>		return;
>	}
>
>	if (sc->bge_flags & BGE_FLAG_TBI) {
>		status = CSR_READ_4(sc, BGE_MAC_STS);
>		if (status & BGE_MACSTAT_TBI_PCS_SYNCHED) {
>			if (!sc->bge_link) {
>				sc->bge_link++;
>				if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
>					BGE_CLRBIT(sc, BGE_MAC_MODE,
>					    BGE_MACMODE_TBI_SEND_CFGS);
>					DELAY(40);
>				}
>				CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
>				if (bootverbose)
>					if_printf(sc->bge_ifp, "link UP\n");
>				if_link_state_change(sc->bge_ifp,
>				    LINK_STATE_UP);
>			}
>		} else if (sc->bge_link) {
>			sc->bge_link = 0;
>			if (bootverbose)
>				if_printf(sc->bge_ifp, "link DOWN\n");
>			if_link_state_change(sc->bge_ifp, LINK_STATE_DOWN);
>		}
>	} else if ((sc->bge_mi_mode & BGE_MIMODE_AUTOPOLL) != 0) {
>		/*
>		 * Some broken BCM chips have BGE_STATFLAG_LINKSTATE_CHANGED bit
>		 * in status word always set. Workaround this bug by reading
>		 * PHY link status directly.
>		 */
>		link = (CSR_READ_4(sc, BGE_MI_STS) & BGE_MISTS_LINK) ? 1 : 0;
>
>		if (link != sc->bge_link ||
>		    sc->bge_asicrev == BGE_ASICREV_BCM5700) {
>			mii = device_get_softc(sc->bge_miibus);
>			mii_pollstat(mii);
>			if (!sc->bge_link &&
>			    mii->mii_media_status & IFM_ACTIVE &&
>			    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
>				sc->bge_link++;
>				if (bootverbose)
>					if_printf(sc->bge_ifp, "link UP\n");
>			} else if (sc->bge_link &&
>			    (!(mii->mii_media_status & IFM_ACTIVE) ||
>			    IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
>				sc->bge_link = 0;
>				if (bootverbose)
>					if_printf(sc->bge_ifp, "link DOWN\n");
>			}
>		}
>	} else {
>		/*
>		 * For controllers that call mii_tick, we have to poll
>		 * link status.
>		 */
>		mii = device_get_softc(sc->bge_miibus);
>		mii_pollstat(mii);
>		bge_miibus_statchg(sc->bge_dev);
>	}
>
>	/* Disable MAC attention when link is up. */
>	CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
>	    BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
>	    BGE_MACSTAT_LINK_CHANGED);
>}
>
>static void
>bge_add_sysctls(struct bge_softc *sc)
>{
>	struct sysctl_ctx_list *ctx;
>	struct sysctl_oid_list *children;
>	int unit;
>
>	ctx = device_get_sysctl_ctx(sc->bge_dev);
>	children = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->bge_dev));
>
>#ifdef BGE_REGISTER_DEBUG
>	SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "debug_info",
>	    CTLTYPE_INT | CTLFLAG_RW, sc, 0, bge_sysctl_debug_info, "I",
>	    "Debug Information");
>
>	SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "reg_read",
>	    CTLTYPE_INT | CTLFLAG_RW, sc, 0, bge_sysctl_reg_read, "I",
>	    "MAC Register Read");
>
>	SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "ape_read",
>	    CTLTYPE_INT | CTLFLAG_RW, sc, 0, bge_sysctl_ape_read, "I",
>	    "APE Register Read");
>
>	SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "mem_read",
>	    CTLTYPE_INT | CTLFLAG_RW, sc, 0, bge_sysctl_mem_read, "I",
>	    "Memory Read");
>
>#endif
>
>	unit = device_get_unit(sc->bge_dev);
>	/*
>	 * A common design characteristic for many Broadcom client controllers
>	 * is that they only support a single outstanding DMA read operation
>	 * on the PCIe bus. This means that it will take twice as long to fetch
>	 * a TX frame that is split into header and payload buffers as it does
>	 * to fetch a single, contiguous TX frame (2 reads vs. 1 read). For
>	 * these controllers, coalescing buffers to reduce the number of memory
>	 * reads is effective way to get maximum performance(about 940Mbps).
>	 * Without collapsing TX buffers the maximum TCP bulk transfer
>	 * performance is about 850Mbps. However forcing coalescing mbufs
>	 * consumes a lot of CPU cycles, so leave it off by default.
>	 */
>	sc->bge_forced_collapse = 0;
>	SYSCTL_ADD_INT(ctx, children, OID_AUTO, "forced_collapse",
>	    CTLFLAG_RWTUN, &sc->bge_forced_collapse, 0,
>	    "Number of fragmented TX buffers of a frame allowed before "
>	    "forced collapsing");
>
>	sc->bge_msi = 1;
>	SYSCTL_ADD_INT(ctx, children, OID_AUTO, "msi",
>	    CTLFLAG_RDTUN, &sc->bge_msi, 0, "Enable MSI");
>
>	/*
>	 * It seems all Broadcom controllers have a bug that can generate UDP
>	 * datagrams with checksum value 0 when TX UDP checksum offloading is
>	 * enabled.  Generating UDP checksum value 0 is RFC 768 violation.
>	 * Even though the probability of generating such UDP datagrams is
>	 * low, I don't want to see FreeBSD boxes to inject such datagrams
>	 * into network so disable UDP checksum offloading by default.  Users
>	 * still override this behavior by setting a sysctl variable,
>	 * dev.bge.0.forced_udpcsum.
>	 */
>	sc->bge_forced_udpcsum = 0;
>	SYSCTL_ADD_INT(ctx, children, OID_AUTO, "forced_udpcsum",
>	    CTLFLAG_RWTUN, &sc->bge_forced_udpcsum, 0,
>	    "Enable UDP checksum offloading even if controller can "
>	    "generate UDP checksum value 0");
>
>	if (BGE_IS_5705_PLUS(sc))
>		bge_add_sysctl_stats_regs(sc, ctx, children);
>	else
>		bge_add_sysctl_stats(sc, ctx, children);
>}
>
>#define BGE_SYSCTL_STAT(sc, ctx, desc, parent, node, oid) \
>	SYSCTL_ADD_PROC(ctx, parent, OID_AUTO, oid, CTLTYPE_UINT|CTLFLAG_RD, \
>	    sc, offsetof(struct bge_stats, node), bge_sysctl_stats, "IU", \
>	    desc)
>
>static void
>bge_add_sysctl_stats(struct bge_softc *sc, struct sysctl_ctx_list *ctx,
>    struct sysctl_oid_list *parent)
>{
>	struct sysctl_oid *tree;
>	struct sysctl_oid_list *children, *schildren;
>
>	tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "stats", CTLFLAG_RD,
>	    NULL, "BGE Statistics");
>	schildren = children = SYSCTL_CHILDREN(tree);
>	BGE_SYSCTL_STAT(sc, ctx, "Frames Dropped Due To Filters",
>	    children, COSFramesDroppedDueToFilters,
>	    "FramesDroppedDueToFilters");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC DMA Write Queue Full",
>	    children, nicDmaWriteQueueFull, "DmaWriteQueueFull");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC DMA Write High Priority Queue Full",
>	    children, nicDmaWriteHighPriQueueFull, "DmaWriteHighPriQueueFull");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC No More RX Buffer Descriptors",
>	    children, nicNoMoreRxBDs, "NoMoreRxBDs");
>	BGE_SYSCTL_STAT(sc, ctx, "Discarded Input Frames",
>	    children, ifInDiscards, "InputDiscards");
>	BGE_SYSCTL_STAT(sc, ctx, "Input Errors",
>	    children, ifInErrors, "InputErrors");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC Recv Threshold Hit",
>	    children, nicRecvThresholdHit, "RecvThresholdHit");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC DMA Read Queue Full",
>	    children, nicDmaReadQueueFull, "DmaReadQueueFull");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC DMA Read High Priority Queue Full",
>	    children, nicDmaReadHighPriQueueFull, "DmaReadHighPriQueueFull");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC Send Data Complete Queue Full",
>	    children, nicSendDataCompQueueFull, "SendDataCompQueueFull");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC Ring Set Send Producer Index",
>	    children, nicRingSetSendProdIndex, "RingSetSendProdIndex");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC Ring Status Update",
>	    children, nicRingStatusUpdate, "RingStatusUpdate");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC Interrupts",
>	    children, nicInterrupts, "Interrupts");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC Avoided Interrupts",
>	    children, nicAvoidedInterrupts, "AvoidedInterrupts");
>	BGE_SYSCTL_STAT(sc, ctx, "NIC Send Threshold Hit",
>	    children, nicSendThresholdHit, "SendThresholdHit");
>
>	tree = SYSCTL_ADD_NODE(ctx, schildren, OID_AUTO, "rx", CTLFLAG_RD,
>	    NULL, "BGE RX Statistics");
>	children = SYSCTL_CHILDREN(tree);
>	BGE_SYSCTL_STAT(sc, ctx, "Inbound Octets",
>	    children, rxstats.ifHCInOctets, "ifHCInOctets");
>	BGE_SYSCTL_STAT(sc, ctx, "Fragments",
>	    children, rxstats.etherStatsFragments, "Fragments");
>	BGE_SYSCTL_STAT(sc, ctx, "Inbound Unicast Packets",
>	    children, rxstats.ifHCInUcastPkts, "UnicastPkts");
>	BGE_SYSCTL_STAT(sc, ctx, "Inbound Multicast Packets",
>	    children, rxstats.ifHCInMulticastPkts, "MulticastPkts");
>	BGE_SYSCTL_STAT(sc, ctx, "FCS Errors",
>	    children, rxstats.dot3StatsFCSErrors, "FCSErrors");
>	BGE_SYSCTL_STAT(sc, ctx, "Alignment Errors",
>	    children, rxstats.dot3StatsAlignmentErrors, "AlignmentErrors");
>	BGE_SYSCTL_STAT(sc, ctx, "XON Pause Frames Received",
>	    children, rxstats.xonPauseFramesReceived, "xonPauseFramesReceived");
>	BGE_SYSCTL_STAT(sc, ctx, "XOFF Pause Frames Received",
>	    children, rxstats.xoffPauseFramesReceived,
>	    "xoffPauseFramesReceived");
>	BGE_SYSCTL_STAT(sc, ctx, "MAC Control Frames Received",
>	    children, rxstats.macControlFramesReceived,
>	    "ControlFramesReceived");
>	BGE_SYSCTL_STAT(sc, ctx, "XOFF State Entered",
>	    children, rxstats.xoffStateEntered, "xoffStateEntered");
>	BGE_SYSCTL_STAT(sc, ctx, "Frames Too Long",
>	    children, rxstats.dot3StatsFramesTooLong, "FramesTooLong");
>	BGE_SYSCTL_STAT(sc, ctx, "Jabbers",
>	    children, rxstats.etherStatsJabbers, "Jabbers");
>	BGE_SYSCTL_STAT(sc, ctx, "Undersized Packets",
>	    children, rxstats.etherStatsUndersizePkts, "UndersizePkts");
>	BGE_SYSCTL_STAT(sc, ctx, "Inbound Range Length Errors",
>	    children, rxstats.inRangeLengthError, "inRangeLengthError");
>	BGE_SYSCTL_STAT(sc, ctx, "Outbound Range Length Errors",
>	    children, rxstats.outRangeLengthError, "outRangeLengthError");
>
>	tree = SYSCTL_ADD_NODE(ctx, schildren, OID_AUTO, "tx", CTLFLAG_RD,
>	    NULL, "BGE TX Statistics");
>	children = SYSCTL_CHILDREN(tree);
>	BGE_SYSCTL_STAT(sc, ctx, "Outbound Octets",
>	    children, txstats.ifHCOutOctets, "ifHCOutOctets");
>	BGE_SYSCTL_STAT(sc, ctx, "TX Collisions",
>	    children, txstats.etherStatsCollisions, "Collisions");
>	BGE_SYSCTL_STAT(sc, ctx, "XON Sent",
>	    children, txstats.outXonSent, "XonSent");
>	BGE_SYSCTL_STAT(sc, ctx, "XOFF Sent",
>	    children, txstats.outXoffSent, "XoffSent");
>	BGE_SYSCTL_STAT(sc, ctx, "Flow Control Done",
>	    children, txstats.flowControlDone, "flowControlDone");
>	BGE_SYSCTL_STAT(sc, ctx, "Internal MAC TX errors",
>	    children, txstats.dot3StatsInternalMacTransmitErrors,
>	    "InternalMacTransmitErrors");
>	BGE_SYSCTL_STAT(sc, ctx, "Single Collision Frames",
>	    children, txstats.dot3StatsSingleCollisionFrames,
>	    "SingleCollisionFrames");
>	BGE_SYSCTL_STAT(sc, ctx, "Multiple Collision Frames",
>	    children, txstats.dot3StatsMultipleCollisionFrames,
>	    "MultipleCollisionFrames");
>	BGE_SYSCTL_STAT(sc, ctx, "Deferred Transmissions",
>	    children, txstats.dot3StatsDeferredTransmissions,
>	    "DeferredTransmissions");
>	BGE_SYSCTL_STAT(sc, ctx, "Excessive Collisions",
>	    children, txstats.dot3StatsExcessiveCollisions,
>	    "ExcessiveCollisions");
>	BGE_SYSCTL_STAT(sc, ctx, "Late Collisions",
>	    children, txstats.dot3StatsLateCollisions,
>	    "LateCollisions");
>	BGE_SYSCTL_STAT(sc, ctx, "Outbound Unicast Packets",
>	    children, txstats.ifHCOutUcastPkts, "UnicastPkts");
>	BGE_SYSCTL_STAT(sc, ctx, "Outbound Multicast Packets",
>	    children, txstats.ifHCOutMulticastPkts, "MulticastPkts");
>	BGE_SYSCTL_STAT(sc, ctx, "Outbound Broadcast Packets",
>	    children, txstats.ifHCOutBroadcastPkts, "BroadcastPkts");
>	BGE_SYSCTL_STAT(sc, ctx, "Carrier Sense Errors",
>	    children, txstats.dot3StatsCarrierSenseErrors,
>	    "CarrierSenseErrors");
>	BGE_SYSCTL_STAT(sc, ctx, "Outbound Discards",
>	    children, txstats.ifOutDiscards, "Discards");
>	BGE_SYSCTL_STAT(sc, ctx, "Outbound Errors",
>	    children, txstats.ifOutErrors, "Errors");
>}
>
>#undef BGE_SYSCTL_STAT
>
>#define	BGE_SYSCTL_STAT_ADD64(c, h, n, p, d)	\
>	    SYSCTL_ADD_UQUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, d)
>
>static void
>bge_add_sysctl_stats_regs(struct bge_softc *sc, struct sysctl_ctx_list *ctx,
>    struct sysctl_oid_list *parent)
>{
>	struct sysctl_oid *tree;
>	struct sysctl_oid_list *child, *schild;
>	struct bge_mac_stats *stats;
>
>	stats = &sc->bge_mac_stats;
>	tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "stats", CTLFLAG_RD,
>	    NULL, "BGE Statistics");
>	schild = child = SYSCTL_CHILDREN(tree);
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "FramesDroppedDueToFilters",
>	    &stats->FramesDroppedDueToFilters, "Frames Dropped Due to Filters");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "DmaWriteQueueFull",
>	    &stats->DmaWriteQueueFull, "NIC DMA Write Queue Full");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "DmaWriteHighPriQueueFull",
>	    &stats->DmaWriteHighPriQueueFull,
>	    "NIC DMA Write High Priority Queue Full");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "NoMoreRxBDs",
>	    &stats->NoMoreRxBDs, "NIC No More RX Buffer Descriptors");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "InputDiscards",
>	    &stats->InputDiscards, "Discarded Input Frames");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "InputErrors",
>	    &stats->InputErrors, "Input Errors");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "RecvThresholdHit",
>	    &stats->RecvThresholdHit, "NIC Recv Threshold Hit");
>
>	tree = SYSCTL_ADD_NODE(ctx, schild, OID_AUTO, "rx", CTLFLAG_RD,
>	    NULL, "BGE RX Statistics");
>	child = SYSCTL_CHILDREN(tree);
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "ifHCInOctets",
>	    &stats->ifHCInOctets, "Inbound Octets");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "Fragments",
>	    &stats->etherStatsFragments, "Fragments");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "UnicastPkts",
>	    &stats->ifHCInUcastPkts, "Inbound Unicast Packets");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "MulticastPkts",
>	    &stats->ifHCInMulticastPkts, "Inbound Multicast Packets");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "BroadcastPkts",
>	    &stats->ifHCInBroadcastPkts, "Inbound Broadcast Packets");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "FCSErrors",
>	    &stats->dot3StatsFCSErrors, "FCS Errors");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "AlignmentErrors",
>	    &stats->dot3StatsAlignmentErrors, "Alignment Errors");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "xonPauseFramesReceived",
>	    &stats->xonPauseFramesReceived, "XON Pause Frames Received");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "xoffPauseFramesReceived",
>	    &stats->xoffPauseFramesReceived, "XOFF Pause Frames Received");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "ControlFramesReceived",
>	    &stats->macControlFramesReceived, "MAC Control Frames Received");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "xoffStateEntered",
>	    &stats->xoffStateEntered, "XOFF State Entered");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "FramesTooLong",
>	    &stats->dot3StatsFramesTooLong, "Frames Too Long");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "Jabbers",
>	    &stats->etherStatsJabbers, "Jabbers");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "UndersizePkts",
>	    &stats->etherStatsUndersizePkts, "Undersized Packets");
>
>	tree = SYSCTL_ADD_NODE(ctx, schild, OID_AUTO, "tx", CTLFLAG_RD,
>	    NULL, "BGE TX Statistics");
>	child = SYSCTL_CHILDREN(tree);
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "ifHCOutOctets",
>	    &stats->ifHCOutOctets, "Outbound Octets");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "Collisions",
>	    &stats->etherStatsCollisions, "TX Collisions");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "XonSent",
>	    &stats->outXonSent, "XON Sent");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "XoffSent",
>	    &stats->outXoffSent, "XOFF Sent");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "InternalMacTransmitErrors",
>	    &stats->dot3StatsInternalMacTransmitErrors,
>	    "Internal MAC TX Errors");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "SingleCollisionFrames",
>	    &stats->dot3StatsSingleCollisionFrames, "Single Collision Frames");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "MultipleCollisionFrames",
>	    &stats->dot3StatsMultipleCollisionFrames,
>	    "Multiple Collision Frames");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "DeferredTransmissions",
>	    &stats->dot3StatsDeferredTransmissions, "Deferred Transmissions");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "ExcessiveCollisions",
>	    &stats->dot3StatsExcessiveCollisions, "Excessive Collisions");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "LateCollisions",
>	    &stats->dot3StatsLateCollisions, "Late Collisions");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "UnicastPkts",
>	    &stats->ifHCOutUcastPkts, "Outbound Unicast Packets");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "MulticastPkts",
>	    &stats->ifHCOutMulticastPkts, "Outbound Multicast Packets");
>	BGE_SYSCTL_STAT_ADD64(ctx, child, "BroadcastPkts",
>	    &stats->ifHCOutBroadcastPkts, "Outbound Broadcast Packets");
>}
>
>#undef	BGE_SYSCTL_STAT_ADD64
>
>static int
>bge_sysctl_stats(SYSCTL_HANDLER_ARGS)
>{
>	struct bge_softc *sc;
>	uint32_t result;
>	int offset;
>
>	sc = (struct bge_softc *)arg1;
>	offset = arg2;
>	result = CSR_READ_4(sc, BGE_MEMWIN_START + BGE_STATS_BLOCK + offset +
>	    offsetof(bge_hostaddr, bge_addr_lo));
>	return (sysctl_handle_int(oidp, &result, 0, req));
>}
>
>#ifdef BGE_REGISTER_DEBUG
>static int
>bge_sysctl_debug_info(SYSCTL_HANDLER_ARGS)
>{
>	struct bge_softc *sc;
>	uint16_t *sbdata;
>	int error, result, sbsz;
>	int i, j;
>
>	result = -1;
>	error = sysctl_handle_int(oidp, &result, 0, req);
>	if (error || (req->newptr == NULL))
>		return (error);
>
>	if (result == 1) {
>		sc = (struct bge_softc *)arg1;
>
>		if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
>		    sc->bge_chipid != BGE_CHIPID_BCM5700_C0)
>			sbsz = BGE_STATUS_BLK_SZ;
>		else
>			sbsz = 32;
>		sbdata = (uint16_t *)sc->bge_ldata.bge_status_block;
>		printf("Status Block:\n");
>		BGE_LOCK(sc);
>		bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
>		    sc->bge_cdata.bge_status_map,
>		    BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
>		for (i = 0x0; i < sbsz / sizeof(uint16_t); ) {
>			printf("%06x:", i);
>			for (j = 0; j < 8; j++)
>				printf(" %04x", sbdata[i++]);
>			printf("\n");
>		}
>
>		printf("Registers:\n");
>		for (i = 0x800; i < 0xA00; ) {
>			printf("%06x:", i);
>			for (j = 0; j < 8; j++) {
>				printf(" %08x", CSR_READ_4(sc, i));
>				i += 4;
>			}
>			printf("\n");
>		}
>		BGE_UNLOCK(sc);
>
>		printf("Hardware Flags:\n");
>		if (BGE_IS_5717_PLUS(sc))
>			printf(" - 5717 Plus\n");
>		if (BGE_IS_5755_PLUS(sc))
>			printf(" - 5755 Plus\n");
>		if (BGE_IS_575X_PLUS(sc))
>			printf(" - 575X Plus\n");
>		if (BGE_IS_5705_PLUS(sc))
>			printf(" - 5705 Plus\n");
>		if (BGE_IS_5714_FAMILY(sc))
>			printf(" - 5714 Family\n");
>		if (BGE_IS_5700_FAMILY(sc))
>			printf(" - 5700 Family\n");
>		if (sc->bge_flags & BGE_FLAG_JUMBO)
>			printf(" - Supports Jumbo Frames\n");
>		if (sc->bge_flags & BGE_FLAG_PCIX)
>			printf(" - PCI-X Bus\n");
>		if (sc->bge_flags & BGE_FLAG_PCIE)
>			printf(" - PCI Express Bus\n");
>		if (sc->bge_phy_flags & BGE_PHY_NO_3LED)
>			printf(" - No 3 LEDs\n");
>		if (sc->bge_flags & BGE_FLAG_RX_ALIGNBUG)
>			printf(" - RX Alignment Bug\n");
>	}
>
>	return (error);
>}
>
>static int
>bge_sysctl_reg_read(SYSCTL_HANDLER_ARGS)
>{
>	struct bge_softc *sc;
>	int error;
>	uint16_t result;
>	uint32_t val;
>
>	result = -1;
>	error = sysctl_handle_int(oidp, &result, 0, req);
>	if (error || (req->newptr == NULL))
>		return (error);
>
>	if (result < 0x8000) {
>		sc = (struct bge_softc *)arg1;
>		val = CSR_READ_4(sc, result);
>		printf("reg 0x%06X = 0x%08X\n", result, val);
>	}
>
>	return (error);
>}
>
>static int
>bge_sysctl_ape_read(SYSCTL_HANDLER_ARGS)
>{
>	struct bge_softc *sc;
>	int error;
>	uint16_t result;
>	uint32_t val;
>
>	result = -1;
>	error = sysctl_handle_int(oidp, &result, 0, req);
>	if (error || (req->newptr == NULL))
>		return (error);
>
>	if (result < 0x8000) {
>		sc = (struct bge_softc *)arg1;
>		val = APE_READ_4(sc, result);
>		printf("reg 0x%06X = 0x%08X\n", result, val);
>	}
>
>	return (error);
>}
>
>static int
>bge_sysctl_mem_read(SYSCTL_HANDLER_ARGS)
>{
>	struct bge_softc *sc;
>	int error;
>	uint16_t result;
>	uint32_t val;
>
>	result = -1;
>	error = sysctl_handle_int(oidp, &result, 0, req);
>	if (error || (req->newptr == NULL))
>		return (error);
>
>	if (result < 0x8000) {
>		sc = (struct bge_softc *)arg1;
>		val = bge_readmem_ind(sc, result);
>		printf("mem 0x%06X = 0x%08X\n", result, val);
>	}
>
>	return (error);
>}
>#endif
>
>static int
>bge_get_eaddr_fw(struct bge_softc *sc, uint8_t ether_addr[])
>{
>
>	if (sc->bge_flags & BGE_FLAG_EADDR)
>		return (1);
>
>#ifdef __sparc64__
>	OF_getetheraddr(sc->bge_dev, ether_addr);
>	return (0);
>#endif
>	return (1);
>}
>
>static int
>bge_get_eaddr_mem(struct bge_softc *sc, uint8_t ether_addr[])
>{
>	uint32_t mac_addr;
>
>	mac_addr = bge_readmem_ind(sc, BGE_SRAM_MAC_ADDR_HIGH_MB);
>	if ((mac_addr >> 16) == 0x484b) {
>		ether_addr[0] = (uint8_t)(mac_addr >> 8);
>		ether_addr[1] = (uint8_t)mac_addr;
>		mac_addr = bge_readmem_ind(sc, BGE_SRAM_MAC_ADDR_LOW_MB);
>		ether_addr[2] = (uint8_t)(mac_addr >> 24);
>		ether_addr[3] = (uint8_t)(mac_addr >> 16);
>		ether_addr[4] = (uint8_t)(mac_addr >> 8);
>		ether_addr[5] = (uint8_t)mac_addr;
>		return (0);
>	}
>	return (1);
>}
>
>static int
>bge_get_eaddr_nvram(struct bge_softc *sc, uint8_t ether_addr[])
>{
>	int mac_offset = BGE_EE_MAC_OFFSET;
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
>		mac_offset = BGE_EE_MAC_OFFSET_5906;
>
>	return (bge_read_nvram(sc, ether_addr, mac_offset + 2,
>	    ETHER_ADDR_LEN));
>}
>
>static int
>bge_get_eaddr_eeprom(struct bge_softc *sc, uint8_t ether_addr[])
>{
>
>	if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
>		return (1);
>
>	return (bge_read_eeprom(sc, ether_addr, BGE_EE_MAC_OFFSET + 2,
>	   ETHER_ADDR_LEN));
>}
>
>static int
>bge_get_eaddr(struct bge_softc *sc, uint8_t eaddr[])
>{
>	static const bge_eaddr_fcn_t bge_eaddr_funcs[] = {
>		/* NOTE: Order is critical */
>		bge_get_eaddr_fw,
>		bge_get_eaddr_mem,
>		bge_get_eaddr_nvram,
>		bge_get_eaddr_eeprom,
>		NULL
>	};
>	const bge_eaddr_fcn_t *func;
>
>	for (func = bge_eaddr_funcs; *func != NULL; ++func) {
>		if ((*func)(sc, eaddr) == 0)
>			break;
>	}
>	return (*func == NULL ? ENXIO : 0);
>}
>
>static uint64_t
>bge_get_counter(if_t ifp, ift_counter cnt)
>{
>	struct bge_softc *sc;
>	struct bge_mac_stats *stats;
>
>	sc = if_getsoftc(ifp);
>	if (!BGE_IS_5705_PLUS(sc))
>		return (if_get_counter_default(ifp, cnt));
>	stats = &sc->bge_mac_stats;
>
>	switch (cnt) {
>	case IFCOUNTER_IERRORS:
>		return (stats->NoMoreRxBDs + stats->InputDiscards +
>		    stats->InputErrors);
>	case IFCOUNTER_COLLISIONS:
>		return (stats->etherStatsCollisions);
>	default:
>		return (if_get_counter_default(ifp, cnt));
>	}
>}
>
>static void
>bge_setwol(struct bge_softc *sc)
>{
>       struct ifnet *ifp;
>       uint16_t pmstat;
>       int pmc;
>
>       ifp = sc->bge_ifp;
>
>       if ((ifp->if_capenable & IFCAP_WOL_MAGIC) == 0)
>           return;
>
>       if (pci_find_cap(sc->bge_dev, PCIY_PMG, &pmc) != 0)
>           return;
>
>       BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_MAGIC_PKT_ENB);
>
>       BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
>       BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
>
>       BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
>
>       /* Request PME. */
>       pmstat = pci_read_config(sc->bge_dev,
>           pmc + PCIR_POWER_STATUS, 2);
>       pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
>       pci_write_config(sc->bge_dev,
>           pmc + PCIR_POWER_STATUS, pmstat, 2);
>}

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Attachments on bug 218579: 186870 | 191147 | 197700 | 212388 | 248615 | 248888 | 248890 | 248891 | 249663 | 249664