xref: /titanic_41/usr/src/uts/common/io/bge/bge_main2.c (revision 0adc16190e36914964740716575460dda750de39)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include "sys/bge_impl2.h"
#include <sys/sdt.h>

/*
 * This is the string displayed by modinfo, etc.
 * Make sure you keep the version ID up to date!
 */
static char bge_ident[] = "BCM579x driver v0.48";

/*
 * Property names
 */
static char debug_propname[] = "bge-debug-flags";
static char clsize_propname[] = "cache-line-size";
static char latency_propname[] = "latency-timer";
static char localmac_boolname[] = "local-mac-address?";
static char localmac_propname[] = "local-mac-address";
static char macaddr_propname[] = "mac-address";
static char subdev_propname[] = "subsystem-id";
static char subven_propname[] = "subsystem-vendor-id";
static char rxrings_propname[] = "bge-rx-rings";
static char txrings_propname[] = "bge-tx-rings";
static char default_mtu[] = "default-mtu";

static int bge_add_intrs(bge_t *, int);
static void bge_rem_intrs(bge_t *);

/*
 * Describes the chip's DMA engine
 */
static ddi_dma_attr_t dma_attr = {
	DMA_ATTR_V0,			/* dma_attr version	*/
	0x0000000000000000ull,		/* dma_attr_addr_lo	*/
	0xFFFFFFFFFFFFFFFFull,		/* dma_attr_addr_hi	*/
	0x00000000FFFFFFFFull,		/* dma_attr_count_max	*/
	0x0000000000000001ull,		/* dma_attr_align	*/
	0x00000FFF,			/* dma_attr_burstsizes	*/
	0x00000001,			/* dma_attr_minxfer	*/
	0x000000000000FFFFull,		/* dma_attr_maxxfer	*/
	0xFFFFFFFFFFFFFFFFull,		/* dma_attr_seg		*/
	1,				/* dma_attr_sgllen 	*/
	0x00000001,			/* dma_attr_granular 	*/
	0				/* dma_attr_flags 	*/
};

/*
 * PIO access attributes for registers
 */
static ddi_device_acc_attr_t bge_reg_accattr = {
	DDI_DEVICE_ATTR_V0,
	DDI_NEVERSWAP_ACC,
	DDI_STRICTORDER_ACC
};

/*
 * DMA access attributes for descriptors: NOT to be byte swapped.
 */
static ddi_device_acc_attr_t bge_desc_accattr = {
	DDI_DEVICE_ATTR_V0,
	DDI_NEVERSWAP_ACC,
	DDI_STRICTORDER_ACC
};

/*
 * DMA access attributes for data: NOT to be byte swapped.
 */
static ddi_device_acc_attr_t bge_data_accattr = {
	DDI_DEVICE_ATTR_V0,
	DDI_NEVERSWAP_ACC,
	DDI_STRICTORDER_ACC
};

static ether_addr_t bge_broadcast_addr = {
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};

/*
 * Versions of the O/S up to Solaris 8 didn't support network booting
 * from any network interface except the first (NET0).  Patching this
 * flag to a non-zero value will tell the driver to work around this
 * limitation by creating an extra (internal) pathname node.  To do
 * this, just add a line like the following to the CLIENT'S etc/system
 * file ON THE ROOT FILESYSTEM SERVER before booting the client:
 *
 *	set bge:bge_net1_boot_support = 1;
 */
static uint32_t bge_net1_boot_support = 1;

/*
 * ========== Transmit and receive ring reinitialisation ==========
 */

/*
 * These <reinit> routines each reset the specified ring to an initial
 * state, assuming that the corresponding <init> routine has already
 * been called exactly once.
 */

static void
bge_reinit_send_ring(send_ring_t *srp)
{
	/*
	 * Reinitialise control variables ...
	 */
	ASSERT(srp->tx_flow == 0);
	srp->tx_next = 0;
	srp->tx_free = srp->desc.nslots;

	ASSERT(mutex_owned(srp->tc_lock));
	srp->tc_next = 0;

	/*
	 * Zero and sync all the h/w Send Buffer Descriptors
	 */
	DMA_ZERO(srp->desc);
	DMA_SYNC(srp->desc, DDI_DMA_SYNC_FORDEV);
}

static void
bge_reinit_recv_ring(recv_ring_t *rrp)
{
	/*
	 * Reinitialise control variables ...
	 */
	rrp->rx_next = 0;
}

static void
bge_reinit_buff_ring(buff_ring_t *brp, uint64_t ring)
{
	bge_rbd_t *hw_rbd_p;
	sw_rbd_t *srbdp;
	uint32_t bufsize;
	uint32_t nslots;
	uint32_t slot;

	static uint16_t ring_type_flag[BGE_BUFF_RINGS_MAX] = {
		RBD_FLAG_STD_RING,
		RBD_FLAG_JUMBO_RING,
		RBD_FLAG_MINI_RING
	};

	/*
	 * Zero, initialise and sync all the h/w Receive Buffer Descriptors
	 * Note: all the remaining fields (<type>, <flags>, <ip_cksum>,
	 * <tcp_udp_cksum>, <error_flag>, <vlan_tag>, and <reserved>)
	 * should be zeroed, and so don't need to be set up specifically
	 * once the whole area has been cleared.
	 */
	DMA_ZERO(brp->desc);

	hw_rbd_p = DMA_VPTR(brp->desc);
	nslots = brp->desc.nslots;
	ASSERT(brp->buf[0].nslots == nslots/BGE_SPLIT);
	bufsize = brp->buf[0].size;
	srbdp = brp->sw_rbds;
	for (slot = 0; slot < nslots; ++hw_rbd_p, ++srbdp, ++slot) {
		hw_rbd_p->host_buf_addr = srbdp->pbuf.cookie.dmac_laddress;
		hw_rbd_p->index = slot;
		hw_rbd_p->len = bufsize;
		hw_rbd_p->opaque = srbdp->pbuf.token;
		hw_rbd_p->flags |= ring_type_flag[ring];
	}

	DMA_SYNC(brp->desc, DDI_DMA_SYNC_FORDEV);

	/*
	 * Finally, reinitialise the ring control variables ...
	 */
	brp->rf_next = (nslots != 0) ? (nslots-1) : 0;
}

/*
 * Reinitialize all rings
 */
static void
bge_reinit_rings(bge_t *bgep)
{
	uint64_t ring;

	ASSERT(mutex_owned(bgep->genlock));

	/*
	 * Send Rings ...
	 */
	for (ring = 0; ring < bgep->chipid.tx_rings; ++ring)
		bge_reinit_send_ring(&bgep->send[ring]);

	/*
	 * Receive Return Rings ...
	 */
	for (ring = 0; ring < bgep->chipid.rx_rings; ++ring)
		bge_reinit_recv_ring(&bgep->recv[ring]);

	/*
	 * Receive Producer Rings ...
	 */
	for (ring = 0; ring < BGE_BUFF_RINGS_USED; ++ring)
		bge_reinit_buff_ring(&bgep->buff[ring], ring);
}

/*
 * ========== Internal state management entry points ==========
 */

#undef	BGE_DBG
#define	BGE_DBG		BGE_DBG_NEMO	/* debug flag for this code	*/

/*
 * These routines provide all the functionality required by the
 * corresponding GLD entry points, but don't update the GLD state
 * so they can be called internally without disturbing our record
 * of what GLD thinks we should be doing ...
 */

/*
 *	bge_reset() -- reset h/w & rings to initial state
 */
static void
bge_reset(bge_t *bgep)
{
	uint64_t	ring;

	BGE_TRACE(("bge_reset($%p)", (void *)bgep));

	ASSERT(mutex_owned(bgep->genlock));

	/*
	 * Grab all the other mutexes in the world (this should
	 * ensure no other threads are manipulating driver state)
	 */
	for (ring = 0; ring < BGE_RECV_RINGS_MAX; ++ring)
		mutex_enter(bgep->recv[ring].rx_lock);
	for (ring = 0; ring < BGE_BUFF_RINGS_MAX; ++ring)
		mutex_enter(bgep->buff[ring].rf_lock);
	rw_enter(bgep->errlock, RW_WRITER);
	for (ring = 0; ring < BGE_SEND_RINGS_MAX; ++ring)
		mutex_enter(bgep->send[ring].tc_lock);

	bge_chip_reset(bgep, B_TRUE);
	bge_reinit_rings(bgep);

	/*
	 * Free the world ...
	 */
	for (ring = BGE_SEND_RINGS_MAX; ring-- > 0; )
		mutex_exit(bgep->send[ring].tc_lock);
	rw_exit(bgep->errlock);
	for (ring = BGE_BUFF_RINGS_MAX; ring-- > 0; )
		mutex_exit(bgep->buff[ring].rf_lock);
	for (ring = BGE_RECV_RINGS_MAX; ring-- > 0; )
		mutex_exit(bgep->recv[ring].rx_lock);

	BGE_DEBUG(("bge_reset($%p) done", (void *)bgep));
}

/*
 *	bge_stop() -- stop processing, don't reset h/w or rings
 */
static void
bge_stop(bge_t *bgep)
{
	BGE_TRACE(("bge_stop($%p)", (void *)bgep));

	ASSERT(mutex_owned(bgep->genlock));

	bge_chip_stop(bgep, B_FALSE);

	BGE_DEBUG(("bge_stop($%p) done", (void *)bgep));
}

/*
 *	bge_start() -- start transmitting/receiving
 */
static void
bge_start(bge_t *bgep, boolean_t reset_phys)
{
	BGE_TRACE(("bge_start($%p, %d)", (void *)bgep, reset_phys));

	ASSERT(mutex_owned(bgep->genlock));

	/*
	 * Start chip processing, including enabling interrupts
	 */
	bge_chip_start(bgep, reset_phys);

	BGE_DEBUG(("bge_start($%p, %d) done", (void *)bgep, reset_phys));
}

/*
 * bge_restart - restart transmitting/receiving after error or suspend
 */
void
bge_restart(bge_t *bgep, boolean_t reset_phys)
{
	ASSERT(mutex_owned(bgep->genlock));

	bge_reset(bgep);
	if (bgep->bge_mac_state == BGE_MAC_STARTED) {
		bge_start(bgep, reset_phys);
		bgep->watchdog = 0;
		ddi_trigger_softintr(bgep->resched_id);
	}

	BGE_DEBUG(("bge_restart($%p, %d) done", (void *)bgep, reset_phys));
}


/*
 * ========== Nemo-required management entry points ==========
 */

#undef	BGE_DBG
#define	BGE_DBG		BGE_DBG_NEMO	/* debug flag for this code	*/

/*
 *	bge_m_stop() -- stop transmitting/receiving
 */
static void
bge_m_stop(void *arg)
{
	bge_t *bgep = arg;		/* private device info	*/

	BGE_TRACE(("bge_m_stop($%p)", arg));

	/*
	 * Just stop processing, then record new GLD state
	 */
	mutex_enter(bgep->genlock);
	bgep->link_up_msg = bgep->link_down_msg = " (stopped)";
	bge_stop(bgep);
	bgep->bge_mac_state = BGE_MAC_STOPPED;
	BGE_DEBUG(("bge_m_stop($%p) done", arg));
	mutex_exit(bgep->genlock);
}

/*
 *	bge_m_start() -- start transmitting/receiving
 */
static int
bge_m_start(void *arg)
{
	bge_t *bgep = arg;		/* private device info	*/

	BGE_TRACE(("bge_m_start($%p)", arg));

	/*
	 * Start processing and record new GLD state
	 */
	mutex_enter(bgep->genlock);
	bge_reset(bgep);
	bgep->link_up_msg = bgep->link_down_msg = " (initialized)";
	bge_start(bgep, B_TRUE);
	bgep->bge_mac_state = BGE_MAC_STARTED;
	BGE_DEBUG(("bge_m_start($%p) done", arg));
	mutex_exit(bgep->genlock);

	return (0);
}

/*
 *	bge_m_unicst_set() -- set the physical network address
 */
static int
bge_m_unicst(void *arg, const uint8_t *macaddr)
{
	bge_t *bgep = arg;		/* private device info	*/

	BGE_TRACE(("bge_m_unicst_set($%p, %s)", arg,
		ether_sprintf((void *)macaddr)));

	/*
	 * Remember the new current address in the driver state
	 * Sync the chip's idea of the address too ...
	 */
	mutex_enter(bgep->genlock);
	ethaddr_copy(macaddr, bgep->curr_addr.addr);
	bge_chip_sync(bgep);
	BGE_DEBUG(("bge_m_unicst_set($%p) done", arg));
	mutex_exit(bgep->genlock);

	return (0);
}

/*
 * Compute the index of the required bit in the multicast hash map.
 * This must mirror the way the hardware actually does it!
 * See Broadcom document 570X-PG102-R page 125.
 */
static uint32_t
bge_hash_index(const uint8_t *mca)
{
	uint32_t hash;

	CRC32(hash, mca, ETHERADDRL, -1U, crc32_table);

	return (hash);
}

/*
 *	bge_m_multicst_add() -- enable/disable a multicast address
 */
static int
bge_m_multicst(void *arg, boolean_t add, const uint8_t *mca)
{
	bge_t *bgep = arg;		/* private device info	*/
	uint32_t hash;
	uint32_t index;
	uint32_t word;
	uint32_t bit;
	uint8_t *refp;

	BGE_TRACE(("bge_m_multicst($%p, %s, %s)", arg,
		(add) ? "add" : "remove", ether_sprintf((void *)mca)));

	/*
	 * Precalculate all required masks, pointers etc ...
	 */
	hash = bge_hash_index(mca);
	index = hash % BGE_HASH_TABLE_SIZE;
	word = index/32u;
	bit = 1 << (index % 32u);
	refp = &bgep->mcast_refs[index];

	BGE_DEBUG(("bge_m_multicst: hash 0x%x index %d (%d:0x%x) = %d",
		hash, index, word, bit, *refp));

	/*
	 * We must set the appropriate bit in the hash map (and the
	 * corresponding h/w register) when the refcount goes from 0
	 * to >0, and clear it when the last ref goes away (refcount
	 * goes from >0 back to 0).  If we change the hash map, we
	 * must also update the chip's hardware map registers.
	 */
	mutex_enter(bgep->genlock);
	if (add) {
		if ((*refp)++ == 0) {
			bgep->mcast_hash[word] |= bit;
			bge_chip_sync(bgep);
		}
	} else {
		if (--(*refp) == 0) {
			bgep->mcast_hash[word] &= ~bit;
			bge_chip_sync(bgep);
		}
	}
	BGE_DEBUG(("bge_m_multicst($%p) done", arg));
	mutex_exit(bgep->genlock);

	return (0);
}

/*
 * bge_m_promisc() -- set or reset promiscuous mode on the board
 *
 *	Program the hardware to enable/disable promiscuous and/or
 *	receive-all-multicast modes.
 */
static int
bge_m_promisc(void *arg, boolean_t on)
{
	bge_t *bgep = arg;

	BGE_TRACE(("bge_m_promisc_set($%p, %d)", arg, on));

	/*
	 * Store MAC layer specified mode and pass to chip layer to update h/w
	 */
	mutex_enter(bgep->genlock);
	bgep->promisc = on;
	bge_chip_sync(bgep);
	BGE_DEBUG(("bge_m_promisc_set($%p) done", arg));
	mutex_exit(bgep->genlock);
	return (0);
}

/*
 * Loopback ioctl code
 */

static lb_property_t loopmodes[] = {
	{ normal,	"normal",	BGE_LOOP_NONE		},
	{ external,	"1000Mbps",	BGE_LOOP_EXTERNAL_1000	},
	{ external,	"100Mbps",	BGE_LOOP_EXTERNAL_100	},
	{ external,	"10Mbps",	BGE_LOOP_EXTERNAL_10	},
	{ internal,	"PHY",		BGE_LOOP_INTERNAL_PHY	},
	{ internal,	"MAC",		BGE_LOOP_INTERNAL_MAC	}
};

static enum ioc_reply
bge_set_loop_mode(bge_t *bgep, uint32_t mode)
{
	const char *msg;

	/*
	 * If the mode isn't being changed, there's nothing to do ...
	 */
	if (mode == bgep->param_loop_mode)
		return (IOC_ACK);

	/*
	 * Validate the requested mode and prepare a suitable message
	 * to explain the link down/up cycle that the change will
	 * probably induce ...
	 */
	switch (mode) {
	default:
		return (IOC_INVAL);

	case BGE_LOOP_NONE:
		msg = " (loopback disabled)";
		break;

	case BGE_LOOP_EXTERNAL_1000:
	case BGE_LOOP_EXTERNAL_100:
	case BGE_LOOP_EXTERNAL_10:
		msg = " (external loopback selected)";
		break;

	case BGE_LOOP_INTERNAL_PHY:
		msg = " (PHY internal loopback selected)";
		break;

	case BGE_LOOP_INTERNAL_MAC:
		msg = " (MAC internal loopback selected)";
		break;
	}

	/*
	 * All OK; tell the caller to reprogram
	 * the PHY and/or MAC for the new mode ...
	 */
	bgep->link_down_msg = bgep->link_up_msg = msg;
	bgep->param_loop_mode = mode;
	return (IOC_RESTART_ACK);
}

static enum ioc_reply
bge_loop_ioctl(bge_t *bgep, queue_t *wq, mblk_t *mp, struct iocblk *iocp)
{
	lb_info_sz_t *lbsp;
	lb_property_t *lbpp;
	uint32_t *lbmp;
	int cmd;

	_NOTE(ARGUNUSED(wq))

	/*
	 * Validate format of ioctl
	 */
	if (mp->b_cont == NULL)
		return (IOC_INVAL);

	cmd = iocp->ioc_cmd;
	switch (cmd) {
	default:
		/* NOTREACHED */
		bge_error(bgep, "bge_loop_ioctl: invalid cmd 0x%x", cmd);
		return (IOC_INVAL);

	case LB_GET_INFO_SIZE:
		if (iocp->ioc_count != sizeof (lb_info_sz_t))
			return (IOC_INVAL);
		lbsp = (lb_info_sz_t *)mp->b_cont->b_rptr;
		*lbsp = sizeof (loopmodes);
		return (IOC_REPLY);

	case LB_GET_INFO:
		if (iocp->ioc_count != sizeof (loopmodes))
			return (IOC_INVAL);
		lbpp = (lb_property_t *)mp->b_cont->b_rptr;
		bcopy(loopmodes, lbpp, sizeof (loopmodes));
		return (IOC_REPLY);

	case LB_GET_MODE:
		if (iocp->ioc_count != sizeof (uint32_t))
			return (IOC_INVAL);
		lbmp = (uint32_t *)mp->b_cont->b_rptr;
		*lbmp = bgep->param_loop_mode;
		return (IOC_REPLY);

	case LB_SET_MODE:
		if (iocp->ioc_count != sizeof (uint32_t))
			return (IOC_INVAL);
		lbmp = (uint32_t *)mp->b_cont->b_rptr;
		return (bge_set_loop_mode(bgep, *lbmp));
	}
}

/*
 * Specific bge IOCTLs, the gld module handles the generic ones.
 */
static void
bge_m_ioctl(void *arg, queue_t *wq, mblk_t *mp)
{
	bge_t *bgep = arg;
	struct iocblk *iocp;
	enum ioc_reply status;
	boolean_t need_privilege;
	int err;
	int cmd;

	/*
	 * Validate the command before bothering with the mutex ...
	 */
	iocp = (struct iocblk *)mp->b_rptr;
	iocp->ioc_error = 0;
	need_privilege = B_TRUE;
	cmd = iocp->ioc_cmd;
	switch (cmd) {
	default:
		miocnak(wq, mp, 0, EINVAL);
		return;

	case BGE_MII_READ:
	case BGE_MII_WRITE:
	case BGE_SEE_READ:
	case BGE_SEE_WRITE:
	case BGE_DIAG:
	case BGE_PEEK:
	case BGE_POKE:
	case BGE_PHY_RESET:
	case BGE_SOFT_RESET:
	case BGE_HARD_RESET:
		break;

	case LB_GET_INFO_SIZE:
	case LB_GET_INFO:
	case LB_GET_MODE:
		need_privilege = B_FALSE;
		/* FALLTHRU */
	case LB_SET_MODE:
		break;

	case ND_GET:
		need_privilege = B_FALSE;
		/* FALLTHRU */
	case ND_SET:
		break;
	}

	if (need_privilege) {
		/*
		 * Check for specific net_config privilege on Solaris 10+.
		 * Otherwise just check for root access ...
		 */
		if (secpolicy_net_config != NULL)
			err = secpolicy_net_config(iocp->ioc_cr, B_FALSE);
		else
			err = drv_priv(iocp->ioc_cr);
		if (err != 0) {
			miocnak(wq, mp, 0, err);
			return;
		}
	}

	mutex_enter(bgep->genlock);

	switch (cmd) {
	default:
		_NOTE(NOTREACHED)
		status = IOC_INVAL;
		break;

	case BGE_MII_READ:
	case BGE_MII_WRITE:
	case BGE_SEE_READ:
	case BGE_SEE_WRITE:
	case BGE_DIAG:
	case BGE_PEEK:
	case BGE_POKE:
	case BGE_PHY_RESET:
	case BGE_SOFT_RESET:
	case BGE_HARD_RESET:
		status = bge_chip_ioctl(bgep, wq, mp, iocp);
		break;

	case LB_GET_INFO_SIZE:
	case LB_GET_INFO:
	case LB_GET_MODE:
	case LB_SET_MODE:
		status = bge_loop_ioctl(bgep, wq, mp, iocp);
		break;

	case ND_GET:
	case ND_SET:
		status = bge_nd_ioctl(bgep, wq, mp, iocp);
		break;
	}

	/*
	 * Do we need to reprogram the PHY and/or the MAC?
	 * Do it now, while we still have the mutex.
	 *
	 * Note: update the PHY first, 'cos it controls the
	 * speed/duplex parameters that the MAC code uses.
	 */
	switch (status) {
	case IOC_RESTART_REPLY:
	case IOC_RESTART_ACK:
		bge_phys_update(bgep);
		bge_chip_sync(bgep);
		if (bgep->intr_type == DDI_INTR_TYPE_MSI)
			bge_chip_msi_trig(bgep);
		break;
	}

	mutex_exit(bgep->genlock);

	/*
	 * Finally, decide how to reply
	 */
	switch (status) {
	default:
	case IOC_INVAL:
		/*
		 * Error, reply with a NAK and EINVAL or the specified error
		 */
		miocnak(wq, mp, 0, iocp->ioc_error == 0 ?
			EINVAL : iocp->ioc_error);
		break;

	case IOC_DONE:
		/*
		 * OK, reply already sent
		 */
		break;

	case IOC_RESTART_ACK:
	case IOC_ACK:
		/*
		 * OK, reply with an ACK
		 */
		miocack(wq, mp, 0, 0);
		break;

	case IOC_RESTART_REPLY:
	case IOC_REPLY:
		/*
		 * OK, send prepared reply as ACK or NAK
		 */
		mp->b_datap->db_type = iocp->ioc_error == 0 ?
			M_IOCACK : M_IOCNAK;
		qreply(wq, mp);
		break;
	}
}

static void
bge_m_resources(void *arg)
{
	bge_t *bgep = arg;
	recv_ring_t *rrp;
	mac_rx_fifo_t mrf;
	int ring;

	mutex_enter(bgep->genlock);

	/*
	 * Register Rx rings as resources and save mac
	 * resource id for future reference
	 */
	mrf.mrf_type = MAC_RX_FIFO;
	mrf.mrf_blank = bge_chip_blank;
	mrf.mrf_arg = (void *)bgep;
	mrf.mrf_normal_blank_time = bge_rx_ticks_norm;
	mrf.mrf_normal_pkt_count = bge_rx_count_norm;

	for (ring = 0; ring < bgep->chipid.rx_rings; ring++) {
		rrp = &bgep->recv[ring];
		rrp->handle = mac_resource_add(bgep->macp,
		    (mac_resource_t *)&mrf);
	}

	mutex_exit(bgep->genlock);
}

/*
 * ========== Per-instance setup/teardown code ==========
 */

#undef	BGE_DBG
#define	BGE_DBG		BGE_DBG_INIT	/* debug flag for this code	*/

/*
 * Utility routine to carve a slice off a chunk of allocated memory,
 * updating the chunk descriptor accordingly.  The size of the slice
 * is given by the product of the <qty> and <size> parameters.
 */
static void
bge_slice_chunk(dma_area_t *slice, dma_area_t *chunk,
	uint32_t qty, uint32_t size)
{
	static uint32_t sequence = 0xbcd5704a;
	size_t totsize;

	totsize = qty*size;
	ASSERT(size >= 0);
	ASSERT(totsize <= chunk->alength);

	*slice = *chunk;
	slice->nslots = qty;
	slice->size = size;
	slice->alength = totsize;
	slice->token = ++sequence;

	chunk->mem_va = (caddr_t)chunk->mem_va + totsize;
	chunk->alength -= totsize;
	chunk->offset += totsize;
	chunk->cookie.dmac_laddress += totsize;
	chunk->cookie.dmac_size -= totsize;
}

/*
 * Initialise the specified Receive Producer (Buffer) Ring, using
 * the information in the <dma_area> descriptors that it contains
 * to set up all the other fields. This routine should be called
 * only once for each ring.
 */
static void
bge_init_buff_ring(bge_t *bgep, uint64_t ring)
{
	buff_ring_t *brp;
	bge_status_t *bsp;
	sw_rbd_t *srbdp;
	dma_area_t pbuf;
	uint32_t bufsize;
	uint32_t nslots;
	uint32_t slot;
	uint32_t split;

	static bge_regno_t nic_ring_addrs[BGE_BUFF_RINGS_MAX] = {
		NIC_MEM_SHADOW_BUFF_STD,
		NIC_MEM_SHADOW_BUFF_JUMBO,
		NIC_MEM_SHADOW_BUFF_MINI
	};
	static bge_regno_t mailbox_regs[BGE_BUFF_RINGS_MAX] = {
		RECV_STD_PROD_INDEX_REG,
		RECV_JUMBO_PROD_INDEX_REG,
		RECV_MINI_PROD_INDEX_REG
	};
	static bge_regno_t buff_cons_xref[BGE_BUFF_RINGS_MAX] = {
		STATUS_STD_BUFF_CONS_INDEX,
		STATUS_JUMBO_BUFF_CONS_INDEX,
		STATUS_MINI_BUFF_CONS_INDEX
	};

	BGE_TRACE(("bge_init_buff_ring($%p, %d)",
		(void *)bgep, ring));

	brp = &bgep->buff[ring];
	nslots = brp->desc.nslots;
	ASSERT(brp->buf[0].nslots == nslots/BGE_SPLIT);
	bufsize = brp->buf[0].size;

	/*
	 * Set up the copy of the h/w RCB
	 *
	 * Note: unlike Send & Receive Return Rings, (where the max_len
	 * field holds the number of slots), in a Receive Buffer Ring
	 * this field indicates the size of each buffer in the ring.
	 */
	brp->hw_rcb.host_ring_addr = brp->desc.cookie.dmac_laddress;
	brp->hw_rcb.max_len = bufsize;
	brp->hw_rcb.flags = nslots > 0 ? 0 : RCB_FLAG_RING_DISABLED;
	brp->hw_rcb.nic_ring_addr = nic_ring_addrs[ring];

	/*
	 * Other one-off initialisation of per-ring data
	 */
	brp->bgep = bgep;
	bsp = DMA_VPTR(bgep->status_block);
	brp->cons_index_p = &bsp->buff_cons_index[buff_cons_xref[ring]];
	brp->chip_mbx_reg = mailbox_regs[ring];
	mutex_init(brp->rf_lock, NULL, MUTEX_DRIVER,
	    DDI_INTR_PRI(bgep->intr_pri));

	/*
	 * Allocate the array of s/w Receive Buffer Descriptors
	 */
	srbdp = kmem_zalloc(nslots*sizeof (*srbdp), KM_SLEEP);
	brp->sw_rbds = srbdp;

	/*
	 * Now initialise each array element once and for all
	 */
	for (split = 0; split < BGE_SPLIT; ++split) {
		pbuf = brp->buf[split];
		for (slot = 0; slot < nslots/BGE_SPLIT; ++srbdp, ++slot)
			bge_slice_chunk(&srbdp->pbuf, &pbuf, 1, bufsize);
		ASSERT(pbuf.alength == 0);
	}
}

/*
 * Clean up initialisation done above before the memory is freed
 */
static void
bge_fini_buff_ring(bge_t *bgep, uint64_t ring)
{
	buff_ring_t *brp;
	sw_rbd_t *srbdp;

	BGE_TRACE(("bge_fini_buff_ring($%p, %d)",
		(void *)bgep, ring));

	brp = &bgep->buff[ring];
	srbdp = brp->sw_rbds;
	kmem_free(srbdp, brp->desc.nslots*sizeof (*srbdp));

	mutex_destroy(brp->rf_lock);
}

/*
 * Initialise the specified Receive (Return) Ring, using the
 * information in the <dma_area> descriptors that it contains
 * to set up all the other fields. This routine should be called
 * only once for each ring.
 */
static void
bge_init_recv_ring(bge_t *bgep, uint64_t ring)
{
	recv_ring_t *rrp;
	bge_status_t *bsp;
	uint32_t nslots;

	BGE_TRACE(("bge_init_recv_ring($%p, %d)",
		(void *)bgep, ring));

	/*
	 * The chip architecture requires that receive return rings have
	 * 512 or 1024 or 2048 elements per ring.  See 570X-PG108-R page 103.
	 */
	rrp = &bgep->recv[ring];
	nslots = rrp->desc.nslots;
	ASSERT(nslots == 0 || nslots == 512 ||
		nslots == 1024 || nslots == 2048);

	/*
	 * Set up the copy of the h/w RCB
	 */
	rrp->hw_rcb.host_ring_addr = rrp->desc.cookie.dmac_laddress;
	rrp->hw_rcb.max_len = nslots;
	rrp->hw_rcb.flags = nslots > 0 ? 0 : RCB_FLAG_RING_DISABLED;
	rrp->hw_rcb.nic_ring_addr = 0;

	/*
	 * Other one-off initialisation of per-ring data
	 */
	rrp->bgep = bgep;
	bsp = DMA_VPTR(bgep->status_block);
	rrp->prod_index_p = RECV_INDEX_P(bsp, ring);
	rrp->chip_mbx_reg = RECV_RING_CONS_INDEX_REG(ring);
	mutex_init(rrp->rx_lock, NULL, MUTEX_DRIVER,
	    DDI_INTR_PRI(bgep->intr_pri));
}


/*
 * Clean up initialisation done above before the memory is freed
 */
static void
bge_fini_recv_ring(bge_t *bgep, uint64_t ring)
{
	recv_ring_t *rrp;

	BGE_TRACE(("bge_fini_recv_ring($%p, %d)",
		(void *)bgep, ring));

	rrp = &bgep->recv[ring];
	if (rrp->rx_softint)
		ddi_remove_softintr(rrp->rx_softint);
	mutex_destroy(rrp->rx_lock);
}

/*
 * Initialise the specified Send Ring, using the information in the
 * <dma_area> descriptors that it contains to set up all the other
 * fields. This routine should be called only once for each ring.
 */
static void
bge_init_send_ring(bge_t *bgep, uint64_t ring)
{
	send_ring_t *srp;
	bge_status_t *bsp;
	sw_sbd_t *ssbdp;
	dma_area_t desc;
	dma_area_t pbuf;
	uint32_t nslots;
	uint32_t slot;
	uint32_t split;

	BGE_TRACE(("bge_init_send_ring($%p, %d)",
		(void *)bgep, ring));

	/*
	 * The chip architecture requires that host-based send rings
	 * have 512 elements per ring.  See 570X-PG102-R page 56.
	 */
	srp = &bgep->send[ring];
	nslots = srp->desc.nslots;
	ASSERT(nslots == 0 || nslots == 512);

	/*
	 * Set up the copy of the h/w RCB
	 */
	srp->hw_rcb.host_ring_addr = srp->desc.cookie.dmac_laddress;
	srp->hw_rcb.max_len = nslots;
	srp->hw_rcb.flags = nslots > 0 ? 0 : RCB_FLAG_RING_DISABLED;
	srp->hw_rcb.nic_ring_addr = NIC_MEM_SHADOW_SEND_RING(ring, nslots);

	/*
	 * Other one-off initialisation of per-ring data
	 */
	srp->bgep = bgep;
	bsp = DMA_VPTR(bgep->status_block);
	srp->cons_index_p = SEND_INDEX_P(bsp, ring);
	srp->chip_mbx_reg = SEND_RING_HOST_INDEX_REG(ring);
	mutex_init(srp->tx_lock, NULL, MUTEX_DRIVER,
	    DDI_INTR_PRI(bgep->intr_pri));
	mutex_init(srp->tc_lock, NULL, MUTEX_DRIVER,
	    DDI_INTR_PRI(bgep->intr_pri));

	/*
	 * Allocate the array of s/w Send Buffer Descriptors
	 */
	ssbdp = kmem_zalloc(nslots*sizeof (*ssbdp), KM_SLEEP);
	srp->sw_sbds = ssbdp;

	/*
	 * Now initialise each array element once and for all
	 */
	desc = srp->desc;
	for (split = 0; split < BGE_SPLIT; ++split) {
		pbuf = srp->buf[split];
		for (slot = 0; slot < nslots/BGE_SPLIT; ++ssbdp, ++slot) {
			bge_slice_chunk(&ssbdp->desc, &desc, 1,
				sizeof (bge_sbd_t));
			bge_slice_chunk(&ssbdp->pbuf, &pbuf, 1,
				bgep->chipid.snd_buff_size);
		}
		ASSERT(pbuf.alength == 0);
	}
	ASSERT(desc.alength == 0);
}

/*
 * Clean up initialisation done above before the memory is freed
 */
static void
bge_fini_send_ring(bge_t *bgep, uint64_t ring)
{
	send_ring_t *srp;
	sw_sbd_t *ssbdp;

	BGE_TRACE(("bge_fini_send_ring($%p, %d)",
		(void *)bgep, ring));

	srp = &bgep->send[ring];
	ssbdp = srp->sw_sbds;
	kmem_free(ssbdp, srp->desc.nslots*sizeof (*ssbdp));

	mutex_destroy(srp->tx_lock);
	mutex_destroy(srp->tc_lock);
}

/*
 * Initialise all transmit, receive, and buffer rings.
 * (also a few top-level mutexen that can't be done until
 * the h/w interrupt handler has been registered 'cos we
 * need the cookie).
 */
static void
bge_init_rings(bge_t *bgep)
{
	uint64_t ring;

	BGE_TRACE(("bge_init_rings($%p)", (void *)bgep));

	mutex_init(bgep->genlock, NULL, MUTEX_DRIVER,
	    DDI_INTR_PRI(bgep->intr_pri));
	mutex_init(bgep->softintrlock, NULL, MUTEX_DRIVER,
		DDI_INTR_PRI(bgep->intr_pri));
	rw_init(bgep->errlock, NULL, RW_DRIVER,
	    DDI_INTR_PRI(bgep->intr_pri));

	/*
	 * Perform one-off initialisation of each ring ...
	 */
	for (ring = 0; ring < BGE_SEND_RINGS_MAX; ++ring)
		bge_init_send_ring(bgep, ring);
	for (ring = 0; ring < BGE_RECV_RINGS_MAX; ++ring)
		bge_init_recv_ring(bgep, ring);
	for (ring = 0; ring < BGE_BUFF_RINGS_MAX; ++ring)
		bge_init_buff_ring(bgep, ring);
}

/*
 * Undo the work of bge_init_rings() above before the memory is freed
 */
static void
bge_fini_rings(bge_t *bgep)
{
	uint64_t ring;

	BGE_TRACE(("bge_fini_rings($%p)", (void *)bgep));

	for (ring = 0; ring < BGE_BUFF_RINGS_MAX; ++ring)
		bge_fini_buff_ring(bgep, ring);
	for (ring = 0; ring < BGE_RECV_RINGS_MAX; ++ring)
		bge_fini_recv_ring(bgep, ring);
	for (ring = 0; ring < BGE_SEND_RINGS_MAX; ++ring)
		bge_fini_send_ring(bgep, ring);

	rw_destroy(bgep->errlock);
	mutex_destroy(bgep->softintrlock);
	mutex_destroy(bgep->genlock);
}

/*
 * Allocate an area of memory and a DMA handle for accessing it
 */
static int
bge_alloc_dma_mem(bge_t *bgep, size_t memsize, ddi_device_acc_attr_t *attr_p,
	uint_t dma_flags, dma_area_t *dma_p)
{
	caddr_t va;
	int err;

	BGE_TRACE(("bge_alloc_dma_mem($%p, %ld, $%p, 0x%x, $%p)",
		(void *)bgep, memsize, attr_p, dma_flags, dma_p));

	/*
	 * Allocate handle
	 */
	err = ddi_dma_alloc_handle(bgep->devinfo, &dma_attr,
		DDI_DMA_SLEEP, NULL, &dma_p->dma_hdl);
	if (err != DDI_SUCCESS)
		return (DDI_FAILURE);

	/*
	 * Allocate memory
	 */
	err = ddi_dma_mem_alloc(dma_p->dma_hdl, memsize, attr_p,
		dma_flags & (DDI_DMA_CONSISTENT | DDI_DMA_STREAMING),
		DDI_DMA_SLEEP, NULL, &va, &dma_p->alength, &dma_p->acc_hdl);
	if (err != DDI_SUCCESS)
		return (DDI_FAILURE);

	/*
	 * Bind the two together
	 */
	dma_p->mem_va = va;
	err = ddi_dma_addr_bind_handle(dma_p->dma_hdl, NULL,
		va, dma_p->alength, dma_flags, DDI_DMA_SLEEP, NULL,
		&dma_p->cookie, &dma_p->ncookies);

	BGE_DEBUG(("bge_alloc_dma_mem(): bind %d bytes; err %d, %d cookies",
		dma_p->alength, err, dma_p->ncookies));

	if (err != DDI_DMA_MAPPED || dma_p->ncookies != 1)
		return (DDI_FAILURE);

	dma_p->nslots = ~0U;
	dma_p->size = ~0U;
	dma_p->token = ~0U;
	dma_p->offset = 0;
	return (DDI_SUCCESS);
}

/*
 * Free one allocated area of DMAable memory
 */
static void
bge_free_dma_mem(dma_area_t *dma_p)
{
	if (dma_p->dma_hdl != NULL) {
		if (dma_p->ncookies) {
			(void) ddi_dma_unbind_handle(dma_p->dma_hdl);
			dma_p->ncookies = 0;
		}
		ddi_dma_free_handle(&dma_p->dma_hdl);
		dma_p->dma_hdl = NULL;
	}

	if (dma_p->acc_hdl != NULL) {
		ddi_dma_mem_free(&dma_p->acc_hdl);
		dma_p->acc_hdl = NULL;
	}
}

/*
 * This function allocates all the transmit and receive buffers
 * and descriptors, in four chunks (or one, if MONOLITHIC).
 */
static int
bge_alloc_bufs(bge_t *bgep)
{
	dma_area_t area;
	size_t rxbuffsize;
	size_t txbuffsize;
	size_t rxbuffdescsize;
	size_t rxdescsize;
	size_t txdescsize;
	uint64_t ring;
	uint64_t rx_rings = bgep->chipid.rx_rings;
	uint64_t tx_rings = bgep->chipid.tx_rings;
	int split;
	int err;

	BGE_TRACE(("bge_alloc_bufs($%p)",
		(void *)bgep));

	rxbuffsize = BGE_STD_SLOTS_USED*BGE_STD_BUFF_SIZE;
	rxbuffsize += bgep->chipid.jumbo_slots*bgep->chipid.recv_jumbo_size;
	rxbuffsize += BGE_MINI_SLOTS_USED*BGE_MINI_BUFF_SIZE;

	txbuffsize = BGE_SEND_SLOTS_USED*bgep->chipid.snd_buff_size;
	txbuffsize *= tx_rings;

	rxdescsize = rx_rings*bgep->chipid.recv_slots;
	rxdescsize *= sizeof (bge_rbd_t);

	rxbuffdescsize = BGE_STD_SLOTS_USED;
	rxbuffdescsize += bgep->chipid.jumbo_slots;
	rxbuffdescsize += BGE_MINI_SLOTS_USED;
	rxbuffdescsize *= sizeof (bge_rbd_t);

	txdescsize = tx_rings*BGE_SEND_SLOTS_USED;
	txdescsize *= sizeof (bge_sbd_t);
	txdescsize += sizeof (bge_statistics_t);
	txdescsize += sizeof (bge_status_t);
	txdescsize += BGE_STATUS_PADDING;

#if	BGE_MONOLITHIC

	err = bge_alloc_dma_mem(bgep,
		rxbuffsize+txbuffsize+rxbuffdescsize+rxdescsize+txdescsize,
		&bge_data_accattr, DDI_DMA_RDWR | DDI_DMA_CONSISTENT, &area);
	if (err != DDI_SUCCESS)
		return (DDI_FAILURE);

	BGE_DEBUG(("allocated range $%p-$%p (0x%lx-0x%lx)",
		DMA_VPTR(area),
		(caddr_t)DMA_VPTR(area)+area.alength,
		area.cookie.dmac_laddress,
		area.cookie.dmac_laddress+area.alength));

	bge_slice_chunk(&bgep->rx_buff[0], &area, 1, rxbuffsize);
	bge_slice_chunk(&bgep->tx_buff[0], &area, 1, txbuffsize);
	bge_slice_chunk(&bgep->rx_desc[0], &area, 1, rxdescsize);
	bge_slice_chunk(&bgep->tx_desc, &area, 1, txdescsize);

#else
	/*
	 * Allocate memory & handles for RX buffers
	 */
	ASSERT((rxbuffsize % BGE_SPLIT) == 0);
	for (split = 0; split < BGE_SPLIT; ++split) {
		err = bge_alloc_dma_mem(bgep, rxbuffsize/BGE_SPLIT,
			&bge_data_accattr, DDI_DMA_READ | BGE_DMA_MODE,
			&bgep->rx_buff[split]);
		if (err != DDI_SUCCESS)
			return (DDI_FAILURE);
	}

	/*
	 * Allocate memory & handles for TX buffers
	 */
	ASSERT((txbuffsize % BGE_SPLIT) == 0);
	for (split = 0; split < BGE_SPLIT; ++split) {
		err = bge_alloc_dma_mem(bgep, txbuffsize/BGE_SPLIT,
			&bge_data_accattr, DDI_DMA_WRITE | BGE_DMA_MODE,
			&bgep->tx_buff[split]);
		if (err != DDI_SUCCESS)
			return (DDI_FAILURE);
	}

	/*
	 * Allocate memory & handles for receive return rings
	 */
	ASSERT((rxdescsize % rx_rings) == 0);
	for (split = 0; split < rx_rings; ++split) {
		err = bge_alloc_dma_mem(bgep, rxdescsize/rx_rings,
			&bge_desc_accattr, DDI_DMA_RDWR | DDI_DMA_CONSISTENT,
			&bgep->rx_desc[split]);
		if (err != DDI_SUCCESS)
			return (DDI_FAILURE);
	}

	/*
	 * Allocate memory & handles for buffer (producer) descriptor rings
	 */
	err = bge_alloc_dma_mem(bgep, rxbuffdescsize, &bge_desc_accattr,
		DDI_DMA_RDWR | DDI_DMA_CONSISTENT, &bgep->rx_desc[split]);
	if (err != DDI_SUCCESS)
		return (DDI_FAILURE);

	/*
	 * Allocate memory & handles for TX descriptor rings,
	 * status block, and statistics area
	 */
	err = bge_alloc_dma_mem(bgep, txdescsize, &bge_desc_accattr,
		DDI_DMA_RDWR | DDI_DMA_CONSISTENT, &bgep->tx_desc);
	if (err != DDI_SUCCESS)
		return (DDI_FAILURE);

#endif	/* BGE_MONOLITHIC */

	/*
	 * Now carve up each of the allocated areas ...
	 */
	for (split = 0; split < BGE_SPLIT; ++split) {
		area = bgep->rx_buff[split];
		bge_slice_chunk(&bgep->buff[BGE_STD_BUFF_RING].buf[split],
			&area, BGE_STD_SLOTS_USED/BGE_SPLIT,
			BGE_STD_BUFF_SIZE);
		bge_slice_chunk(&bgep->buff[BGE_JUMBO_BUFF_RING].buf[split],
			&area, bgep->chipid.jumbo_slots/BGE_SPLIT,
			bgep->chipid.recv_jumbo_size);
		bge_slice_chunk(&bgep->buff[BGE_MINI_BUFF_RING].buf[split],
			&area, BGE_MINI_SLOTS_USED/BGE_SPLIT,
			BGE_MINI_BUFF_SIZE);
		ASSERT(area.alength >= 0);
	}

	for (split = 0; split < BGE_SPLIT; ++split) {
		area = bgep->tx_buff[split];
		for (ring = 0; ring < tx_rings; ++ring)
			bge_slice_chunk(&bgep->send[ring].buf[split],
				&area, BGE_SEND_SLOTS_USED/BGE_SPLIT,
				bgep->chipid.snd_buff_size);
		for (; ring < BGE_SEND_RINGS_MAX; ++ring)
			bge_slice_chunk(&bgep->send[ring].buf[split],
				&area, 0/BGE_SPLIT,
				bgep->chipid.snd_buff_size);
		ASSERT(area.alength >= 0);
	}

	for (ring = 0; ring < rx_rings; ++ring)
		bge_slice_chunk(&bgep->recv[ring].desc, &bgep->rx_desc[ring],
			bgep->chipid.recv_slots, sizeof (bge_rbd_t));

	area = bgep->rx_desc[rx_rings];
	for (; ring < BGE_RECV_RINGS_MAX; ++ring)
		bge_slice_chunk(&bgep->recv[ring].desc, &area,
			0, sizeof (bge_rbd_t));
	bge_slice_chunk(&bgep->buff[BGE_STD_BUFF_RING].desc, &area,
		BGE_STD_SLOTS_USED, sizeof (bge_rbd_t));
	bge_slice_chunk(&bgep->buff[BGE_JUMBO_BUFF_RING].desc, &area,
		bgep->chipid.jumbo_slots, sizeof (bge_rbd_t));
	bge_slice_chunk(&bgep->buff[BGE_MINI_BUFF_RING].desc, &area,
		BGE_MINI_SLOTS_USED, sizeof (bge_rbd_t));
	ASSERT(area.alength == 0);

	area = bgep->tx_desc;
	for (ring = 0; ring < tx_rings; ++ring)
		bge_slice_chunk(&bgep->send[ring].desc, &area,
			BGE_SEND_SLOTS_USED, sizeof (bge_sbd_t));
	for (; ring < BGE_SEND_RINGS_MAX; ++ring)
		bge_slice_chunk(&bgep->send[ring].desc, &area,
			0, sizeof (bge_sbd_t));
	bge_slice_chunk(&bgep->statistics, &area, 1, sizeof (bge_statistics_t));
	bge_slice_chunk(&bgep->status_block, &area, 1, sizeof (bge_status_t));
	ASSERT(area.alength == BGE_STATUS_PADDING);
	DMA_ZERO(bgep->status_block);

	return (DDI_SUCCESS);
}

/*
 * This routine frees the transmit and receive buffers and descriptors.
 * Make sure the chip is stopped before calling it!
 */
static void
bge_free_bufs(bge_t *bgep)
{
	int split;

	BGE_TRACE(("bge_free_bufs($%p)",
		(void *)bgep));

#if	BGE_MONOLITHIC
	bge_free_dma_mem(&bgep->rx_buff[0]);
#else
	bge_free_dma_mem(&bgep->tx_desc);
	for (split = 0; split < BGE_RECV_RINGS_SPLIT; ++split)
		bge_free_dma_mem(&bgep->rx_desc[split]);
	for (split = 0; split < BGE_SPLIT; ++split)
		bge_free_dma_mem(&bgep->tx_buff[split]);
	for (split = 0; split < BGE_SPLIT; ++split)
		bge_free_dma_mem(&bgep->rx_buff[split]);
#endif	/* BGE_MONOLITHIC */
}

/*
 * Determine (initial) MAC address ("BIA") to use for this interface
 */

static void
bge_find_mac_address(bge_t *bgep, chip_id_t *cidp)
{
	struct ether_addr sysaddr;
	char propbuf[8];		/* "true" or "false", plus NUL	*/
	uchar_t *bytes;
	int *ints;
	uint_t nelts;
	int err;

	BGE_TRACE(("bge_find_mac_address($%p)",
		(void *)bgep));

	BGE_DEBUG(("bge_find_mac_address: hw_mac_addr %012llx, => %s (%sset)",
		cidp->hw_mac_addr,
		ether_sprintf((void *)cidp->vendor_addr.addr),
		cidp->vendor_addr.set ? "" : "not "));

	/*
	 * The "vendor's factory-set address" may already have
	 * been extracted from the chip, but if the property
	 * "local-mac-address" is set we use that instead.  It
	 * will normally be set by OBP, but it could also be
	 * specified in a .conf file(!)
	 *
	 * There doesn't seem to be a way to define byte-array
	 * properties in a .conf, so we check whether it looks
	 * like an array of 6 ints instead.
	 *
	 * Then, we check whether it looks like an array of 6
	 * bytes (which it should, if OBP set it).  If we can't
	 * make sense of it either way, we'll ignore it.
	 */
	err = ddi_prop_lookup_int_array(DDI_DEV_T_ANY, bgep->devinfo,
		DDI_PROP_DONTPASS, localmac_propname, &ints, &nelts);
	if (err == DDI_PROP_SUCCESS) {
		if (nelts == ETHERADDRL) {
			while (nelts--)
				cidp->vendor_addr.addr[nelts] = ints[nelts];
			cidp->vendor_addr.set = 1;
		}
		ddi_prop_free(ints);
	}

	err = ddi_prop_lookup_byte_array(DDI_DEV_T_ANY, bgep->devinfo,
		DDI_PROP_DONTPASS, localmac_propname, &bytes, &nelts);
	if (err == DDI_PROP_SUCCESS) {
		if (nelts == ETHERADDRL) {
			while (nelts--)
				cidp->vendor_addr.addr[nelts] = bytes[nelts];
			cidp->vendor_addr.set = 1;
		}
		ddi_prop_free(bytes);
	}

	BGE_DEBUG(("bge_find_mac_address: +local %s (%sset)",
		ether_sprintf((void *)cidp->vendor_addr.addr),
		cidp->vendor_addr.set ? "" : "not "));

	/*
	 * Look up the OBP property "local-mac-address?".  Note that even
	 * though its value is a string (which should be "true" or "false"),
	 * it can't be decoded by ddi_prop_lookup_string(9F).  So, we zero
	 * the buffer first and then fetch the property as an untyped array;
	 * this may or may not include a final NUL, but since there will
	 * always be one left at the end of the buffer we can now treat it
	 * as a string anyway.
	 */
	nelts = sizeof (propbuf);
	bzero(propbuf, nelts--);
	err = ddi_getlongprop_buf(DDI_DEV_T_ANY, bgep->devinfo,
		DDI_PROP_CANSLEEP, localmac_boolname, propbuf, (int *)&nelts);

	/*
	 * Now, if the address still isn't set from the hardware (SEEPROM)
	 * or the OBP or .conf property, OR if the user has foolishly set
	 * 'local-mac-address? = false', use "the system address" instead
	 * (but only if it's non-null i.e. has been set from the IDPROM).
	 */
	if (cidp->vendor_addr.set == 0 || strcmp(propbuf, "false") == 0)
		if (localetheraddr(NULL, &sysaddr) != 0) {
			ethaddr_copy(&sysaddr, cidp->vendor_addr.addr);
			cidp->vendor_addr.set = 1;
		}

	BGE_DEBUG(("bge_find_mac_address: +system %s (%sset)",
		ether_sprintf((void *)cidp->vendor_addr.addr),
		cidp->vendor_addr.set ? "" : "not "));

	/*
	 * Finally(!), if there's a valid "mac-address" property (created
	 * if we netbooted from this interface), we must use this instead
	 * of any of the above to ensure that the NFS/install server doesn't
	 * get confused by the address changing as Solaris takes over!
	 */
	err = ddi_prop_lookup_byte_array(DDI_DEV_T_ANY, bgep->devinfo,
		DDI_PROP_DONTPASS, macaddr_propname, &bytes, &nelts);
	if (err == DDI_PROP_SUCCESS) {
		if (nelts == ETHERADDRL) {
			while (nelts--)
				cidp->vendor_addr.addr[nelts] = bytes[nelts];
			cidp->vendor_addr.set = 1;
		}
		ddi_prop_free(bytes);
	}

	BGE_DEBUG(("bge_find_mac_address: =final %s (%sset)",
		ether_sprintf((void *)cidp->vendor_addr.addr),
		cidp->vendor_addr.set ? "" : "not "));
}

static void
bge_unattach(bge_t *bgep)
{
	mac_t	*macp;

	BGE_TRACE(("bge_unattach($%p)",
		(void *)bgep));

	/*
	 * Flag that no more activity may be initiated
	 */
	bgep->progress &= ~PROGRESS_READY;

	/*
	 * Quiesce the PHY and MAC (leave it reset but still powered).
	 * Clean up and free all BGE data structures
	 */
	if (bgep->cyclic_id) {
		mutex_enter(&cpu_lock);
		cyclic_remove(bgep->cyclic_id);
		mutex_exit(&cpu_lock);
	}
	if (bgep->progress & PROGRESS_KSTATS)
		bge_fini_kstats(bgep);
	if (bgep->progress & PROGRESS_NDD)
		bge_nd_cleanup(bgep);
	if (bgep->progress & PROGRESS_PHY)
		bge_phys_reset(bgep);
	if (bgep->progress & PROGRESS_HWINT) {
		mutex_enter(bgep->genlock);
		bge_chip_reset(bgep, B_FALSE);
		mutex_exit(bgep->genlock);
	}

	if (bgep->progress & PROGRESS_INTR) {
		bge_rem_intrs(bgep);
		bge_fini_rings(bgep);
	}

	if (bgep->progress & PROGRESS_FACTOTUM)
		ddi_remove_softintr(bgep->factotum_id);
	if (bgep->progress & PROGRESS_RESCHED)
		ddi_remove_softintr(bgep->resched_id);
	bge_free_bufs(bgep);
	if (bgep->progress & PROGRESS_REGS)
		ddi_regs_map_free(&bgep->io_handle);
	if (bgep->progress & PROGRESS_CFG)
		pci_config_teardown(&bgep->cfg_handle);

	ddi_remove_minor_node(bgep->devinfo, NULL);
	macp = bgep->macp;
	kmem_free(macp, sizeof (*macp));
	kmem_free(bgep, sizeof (*bgep));
}

static int
bge_resume(dev_info_t *devinfo)
{
	bge_t *bgep;				/* Our private data	*/
	chip_id_t *cidp;
	chip_id_t chipid;

	bgep = ddi_get_driver_private(devinfo);
	if (bgep == NULL)
		return (DDI_FAILURE);

	/*
	 * Refuse to resume if the data structures aren't consistent
	 */
	if (bgep->devinfo != devinfo)
		return (DDI_FAILURE);

	/*
	 * Read chip ID & set up config space command register(s)
	 * Refuse to resume if the chip has changed its identity!
	 */
	cidp = &bgep->chipid;
	bge_chip_cfg_init(bgep, &chipid, B_FALSE);
	if (chipid.vendor != cidp->vendor)
		return (DDI_FAILURE);
	if (chipid.device != cidp->device)
		return (DDI_FAILURE);
	if (chipid.revision != cidp->revision)
		return (DDI_FAILURE);
	if (chipid.asic_rev != cidp->asic_rev)
		return (DDI_FAILURE);

	/*
	 * All OK, reinitialise h/w & kick off GLD scheduling
	 */
	mutex_enter(bgep->genlock);
	bge_restart(bgep, B_TRUE);
	mutex_exit(bgep->genlock);
	return (DDI_SUCCESS);
}

static uint8_t ether_brdcst[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

/*
 * attach(9E) -- Attach a device to the system
 *
 * Called once for each board successfully probed.
 */
static int
bge_attach(dev_info_t *devinfo, ddi_attach_cmd_t cmd)
{
	bge_t *bgep;				/* Our private data	*/
	mac_t *macp;
	chip_id_t *cidp;
	cyc_handler_t cychand;
	cyc_time_t cyctime;
	caddr_t regs;
	int instance;
	int err;
	mac_info_t *mip;
	int intr_types;
	int i;

	instance = ddi_get_instance(devinfo);

	BGE_GTRACE(("bge_attach($%p, %d) instance %d",
		(void *)devinfo, cmd, instance));
	BGE_BRKPT(NULL, "bge_attach");

	switch (cmd) {
	default:
		return (DDI_FAILURE);

	case DDI_RESUME:
		return (bge_resume(devinfo));

	case DDI_ATTACH:
		break;
	}

	/*
	 * Allocate mac_t and BGE private structures, and
	 * cross-link them so that given either one of these or
	 * the devinfo the others can be derived.
	 */
	macp = kmem_zalloc(sizeof (*macp), KM_SLEEP);
	bgep = kmem_zalloc(sizeof (*bgep), KM_SLEEP);
	ddi_set_driver_private(devinfo, bgep);
	bgep->bge_guard = BGE_GUARD;
	bgep->devinfo = devinfo;
	bgep->macp = macp;
	macp->m_driver = bgep;

	/*
	 * Initialize more fields in BGE private data
	 */
	bgep->debug = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
		DDI_PROP_DONTPASS, debug_propname, bge_debug);
	(void) snprintf(bgep->ifname, sizeof (bgep->ifname), "%s%d",
		BGE_DRIVER_NAME, instance);

	/*
	 * Look up the IOMMU's page size for DVMA mappings (must be
	 * a power of 2) and convert to a mask.  This can be used to
	 * determine whether a message buffer crosses a page boundary.
	 * Note: in 2s complement binary notation, if X is a power of
	 * 2, then -X has the representation "11...1100...00".
	 */
	bgep->pagemask = dvma_pagesize(devinfo);
	ASSERT(ddi_ffs(bgep->pagemask) == ddi_fls(bgep->pagemask));
	bgep->pagemask = -bgep->pagemask;

	/*
	 * Map config space registers
	 * Read chip ID & set up config space command register(s)
	 *
	 * Note: this leaves the chip accessible by Memory Space
	 * accesses, but with interrupts and Bus Mastering off.
	 * This should ensure that nothing untoward will happen
	 * if it has been left active by the (net-)bootloader.
	 * We'll re-enable Bus Mastering once we've reset the chip,
	 * and allow interrupts only when everything else is set up.
	 */
	err = pci_config_setup(devinfo, &bgep->cfg_handle);
	if (err != DDI_SUCCESS) {
		bge_problem(bgep, "pci_config_setup() failed");
		goto attach_fail;
	}
	bgep->progress |= PROGRESS_CFG;
	cidp = &bgep->chipid;
	bzero(cidp, sizeof (*cidp));
	bge_chip_cfg_init(bgep, cidp, B_FALSE);

	/*
	 * Update those parts of the chip ID derived from volatile
	 * registers with the values seen by OBP (in case the chip
	 * has been reset externally and therefore lost them).
	 */
	cidp->subven = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
		DDI_PROP_DONTPASS, subven_propname, cidp->subven);
	cidp->subdev = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
		DDI_PROP_DONTPASS, subdev_propname, cidp->subdev);
	cidp->clsize = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
		DDI_PROP_DONTPASS, clsize_propname, cidp->clsize);
	cidp->latency = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
		DDI_PROP_DONTPASS, latency_propname, cidp->latency);
	cidp->rx_rings = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
		DDI_PROP_DONTPASS, rxrings_propname, cidp->rx_rings);
	cidp->tx_rings = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
		DDI_PROP_DONTPASS, txrings_propname, cidp->tx_rings);

	if (bge_jumbo_enable == B_TRUE) {
		cidp->default_mtu = ddi_prop_get_int(DDI_DEV_T_ANY, devinfo,
			DDI_PROP_DONTPASS, default_mtu, BGE_DEFAULT_MTU);
		if ((cidp->default_mtu < BGE_DEFAULT_MTU)||
			(cidp->default_mtu > BGE_MAXIMUM_MTU)) {
			cidp->default_mtu = BGE_DEFAULT_MTU;
		}
	}
	/*
	 * Map operating registers
	 */
	err = ddi_regs_map_setup(devinfo, BGE_PCI_OPREGS_RNUMBER,
		&regs, 0, 0, &bge_reg_accattr, &bgep->io_handle);
	if (err != DDI_SUCCESS) {
		bge_problem(bgep, "ddi_regs_map_setup() failed");
		goto attach_fail;
	}
	bgep->io_regs = regs;
	bgep->progress |= PROGRESS_REGS;

	/*
	 * Characterise the device, so we know its requirements.
	 * Then allocate the appropriate TX and RX descriptors & buffers.
	 */
	bge_chip_id_init(bgep);
	err = bge_alloc_bufs(bgep);
	if (err != DDI_SUCCESS) {
		bge_problem(bgep, "DMA buffer allocation failed");
		goto attach_fail;
	}

	/*
	 * Add the softint handlers:
	 *
	 * Both of these handlers are used to avoid restrictions on the
	 * context and/or mutexes required for some operations.  In
	 * particular, the hardware interrupt handler and its subfunctions
	 * can detect a number of conditions that we don't want to handle
	 * in that context or with that set of mutexes held.  So, these
	 * softints are triggered instead:
	 *
	 * the <resched> softint is triggered if if we have previously
	 * had to refuse to send a packet because of resource shortage
	 * (we've run out of transmit buffers), but the send completion
	 * interrupt handler has now detected that more buffers have
	 * become available.
	 *
	 * the <factotum> is triggered if the h/w interrupt handler
	 * sees the <link state changed> or <error> bits in the status
	 * block.  It's also triggered periodically to poll the link
	 * state, just in case we aren't getting link status change
	 * interrupts ...
	 */
	err = ddi_add_softintr(devinfo, DDI_SOFTINT_LOW, &bgep->resched_id,
		NULL, NULL, bge_reschedule, (caddr_t)bgep);
	if (err != DDI_SUCCESS) {
		bge_problem(bgep, "ddi_add_softintr() failed");
		goto attach_fail;
	}
	bgep->progress |= PROGRESS_RESCHED;
	err = ddi_add_softintr(devinfo, DDI_SOFTINT_LOW, &bgep->factotum_id,
		NULL, NULL, bge_chip_factotum, (caddr_t)bgep);
	if (err != DDI_SUCCESS) {
		bge_problem(bgep, "ddi_add_softintr() failed");
		goto attach_fail;
	}
	bgep->progress |= PROGRESS_FACTOTUM;

	/* Get supported interrupt types */
	if (ddi_intr_get_supported_types(devinfo, &intr_types) != DDI_SUCCESS) {
		bge_error(bgep, "ddi_intr_get_supported_types failed\n");

		goto attach_fail;
	}

	bge_log(bgep, "ddi_intr_get_supported_types() returned: %x",
	    intr_types);

	if ((intr_types & DDI_INTR_TYPE_MSI) && bgep->chipid.msi_enabled) {
		if (bge_add_intrs(bgep, DDI_INTR_TYPE_MSI) != DDI_SUCCESS) {
			bge_error(bgep, "MSI registration failed, "
			    "trying FIXED interrupt type\n");
		} else {
			bge_log(bgep, "Using MSI interrupt type\n");

			bgep->intr_type = DDI_INTR_TYPE_MSI;
			bgep->progress |= PROGRESS_INTR;
		}
	}

	if (!(bgep->progress & PROGRESS_INTR) &&
	    (intr_types & DDI_INTR_TYPE_FIXED)) {
		if (bge_add_intrs(bgep, DDI_INTR_TYPE_FIXED) != DDI_SUCCESS) {
			bge_error(bgep, "FIXED interrupt "
			    "registration failed\n");
			goto attach_fail;
		}

		bge_log(bgep, "Using FIXED interrupt type\n");

		bgep->intr_type = DDI_INTR_TYPE_FIXED;
		bgep->progress |= PROGRESS_INTR;
	}

	if (!(bgep->progress & PROGRESS_INTR)) {
		bge_error(bgep, "No interrupts registered\n");
		goto attach_fail;
	}

	/*
	 * Note that interrupts are not enabled yet as
	 * mutex locks are not initialized.
	 * Initialize rings and mutex locks.
	 */
	bge_init_rings(bgep);
	bgep->progress |= PROGRESS_HWINT;

	/*
	 * Now that mutex locks are initialized, enable interrupts.
	 */
	if (bgep->intr_cap & DDI_INTR_FLAG_BLOCK) {
		/* Call ddi_intr_block_enable() for MSI interrupts */
		(void) ddi_intr_block_enable(bgep->htable, bgep->intr_cnt);
	} else {
		/* Call ddi_intr_enable for MSI or FIXED interrupts */
		for (i = 0; i < bgep->intr_cnt; i++) {
			(void) ddi_intr_enable(bgep->htable[i]);
		}
	}

	/*
	 * Initialise link state variables
	 * Stop, reset & reinitialise the chip.
	 * Initialise the (internal) PHY.
	 */
	bgep->link_state = LINK_STATE_UNKNOWN;
	bgep->link_up_msg = bgep->link_down_msg = " (initialized)";

	mutex_enter(bgep->genlock);

	/*
	 * Reset chip & rings to initial state; also reset address
	 * filtering, promiscuity, loopback mode.
	 */
	bge_reset(bgep);

	bzero(bgep->mcast_hash, sizeof (bgep->mcast_hash));
	bzero(bgep->mcast_refs, sizeof (bgep->mcast_refs));
	bgep->promisc = B_FALSE;
	bgep->param_loop_mode = BGE_LOOP_NONE;

	mutex_exit(bgep->genlock);

	bge_phys_init(bgep);
	bgep->progress |= PROGRESS_PHY;

	/*
	 * Register NDD-tweakable parameters
	 */
	if (bge_nd_init(bgep)) {
		bge_problem(bgep, "bge_nd_init() failed");
		goto attach_fail;
	}
	bgep->progress |= PROGRESS_NDD;

	/*
	 * Create & initialise named kstats
	 */
	bge_init_kstats(bgep, instance);
	bgep->progress |= PROGRESS_KSTATS;

	/*
	 * Determine whether to override the chip's own MAC address
	 */
	bge_find_mac_address(bgep, cidp);
	ethaddr_copy(cidp->vendor_addr.addr, bgep->curr_addr.addr);
	bgep->curr_addr.set = 1;

	/*
	 * Initialize pointers to device specific functions which
	 * will be used by the generic layer.
	 */
	mip = &(macp->m_info);
	mip->mi_media = DL_ETHER;
	mip->mi_sdu_min = 0;
	mip->mi_sdu_max = cidp->ethmax_size - sizeof (struct ether_header);
	mip->mi_cksum = HCKSUM_INET_FULL_V4 | HCKSUM_IPHDRCKSUM;
	mip->mi_poll = DL_CAPAB_POLL;

	mip->mi_addr_length = ETHERADDRL;
	bcopy(ether_brdcst, mip->mi_brdcst_addr, ETHERADDRL);
	bcopy(bgep->curr_addr.addr, mip->mi_unicst_addr, ETHERADDRL);

	MAC_STAT_MIB(mip->mi_stat);
	mip->mi_stat[MAC_STAT_UNKNOWNS] = B_FALSE;
	MAC_STAT_ETHER(mip->mi_stat);
	mip->mi_stat[MAC_STAT_SQE_ERRORS] = B_FALSE;
	mip->mi_stat[MAC_STAT_MACRCV_ERRORS] = B_FALSE;
	if (!(bgep->chipid.flags & CHIP_FLAG_SERDES))
		MAC_STAT_MII(mip->mi_stat);

	macp->m_stat = bge_m_stat;
	macp->m_stop = bge_m_stop;
	macp->m_start = bge_m_start;
	macp->m_unicst = bge_m_unicst;
	macp->m_multicst = bge_m_multicst;
	macp->m_promisc = bge_m_promisc;
	macp->m_tx = bge_m_tx;
	macp->m_resources = bge_m_resources;
	macp->m_ioctl = bge_m_ioctl;

	macp->m_dip = devinfo;
	macp->m_ident = MAC_IDENT;

	/*
	 * Finally, we're ready to register ourselves with the MAC layer
	 * interface; if this succeeds, we're all ready to start()
	 */
	if (mac_register(macp) != 0)
		goto attach_fail;

	cychand.cyh_func = bge_chip_cyclic;
	cychand.cyh_arg = bgep;
	cychand.cyh_level = CY_LOCK_LEVEL;
	cyctime.cyt_when = 0;
	cyctime.cyt_interval = BGE_CYCLIC_PERIOD;
	mutex_enter(&cpu_lock);
	bgep->cyclic_id = cyclic_add(&cychand, &cyctime);
	mutex_exit(&cpu_lock);

	bgep->progress |= PROGRESS_READY;
	ASSERT(bgep->bge_guard == BGE_GUARD);
	return (DDI_SUCCESS);

attach_fail:
	bge_unattach(bgep);
	return (DDI_FAILURE);
}

/*
 *	bge_suspend() -- suspend transmit/receive for powerdown
 */
static int
bge_suspend(bge_t *bgep)
{
	/*
	 * Stop processing and idle (powerdown) the PHY ...
	 */
	mutex_enter(bgep->genlock);
	bge_stop(bgep);
	bge_phys_idle(bgep);
	mutex_exit(bgep->genlock);

	return (DDI_SUCCESS);
}

/*
 * detach(9E) -- Detach a device from the system
 */
static int
bge_detach(dev_info_t *devinfo, ddi_detach_cmd_t cmd)
{
	bge_t *bgep;

	BGE_GTRACE(("bge_detach($%p, %d)", (void *)devinfo, cmd));

	bgep = ddi_get_driver_private(devinfo);

	switch (cmd) {
	default:
		return (DDI_FAILURE);

	case DDI_SUSPEND:
		return (bge_suspend(bgep));

	case DDI_DETACH:
		break;
	}

	/*
	 * Unregister from the GLD subsystem.  This can fail, in
	 * particular if there are DLPI style-2 streams still open -
	 * in which case we just return failure without shutting
	 * down chip operations.
	 */
	if (mac_unregister(bgep->macp) != 0)
		return (DDI_FAILURE);

	/*
	 * All activity stopped, so we can clean up & exit
	 */
	bge_unattach(bgep);
	return (DDI_SUCCESS);
}


/*
 * ========== Module Loading Data & Entry Points ==========
 */

#undef	BGE_DBG
#define	BGE_DBG		BGE_DBG_INIT	/* debug flag for this code	*/

DDI_DEFINE_STREAM_OPS(bge_dev_ops, nulldev, nulldev, bge_attach, bge_detach,
    nodev, NULL, D_MP, NULL);

static struct modldrv bge_modldrv = {
	&mod_driverops,		/* Type of module.  This one is a driver */
	bge_ident,		/* short description */
	&bge_dev_ops		/* driver specific ops */
};

static struct modlinkage modlinkage = {
	MODREV_1, (void *)&bge_modldrv, NULL
};


int
_info(struct modinfo *modinfop)
{
	return (mod_info(&modlinkage, modinfop));
}

int
_init(void)
{
	int status;

	mac_init_ops(&bge_dev_ops, "bge");
	status = mod_install(&modlinkage);
	if (status == DDI_SUCCESS)
		mutex_init(bge_log_mutex, NULL, MUTEX_DRIVER, NULL);
	else
		mac_fini_ops(&bge_dev_ops);
	return (status);
}

int
_fini(void)
{
	int status;

	status = mod_remove(&modlinkage);
	if (status == DDI_SUCCESS) {
		mac_fini_ops(&bge_dev_ops);
		mutex_destroy(bge_log_mutex);
	}
	return (status);
}


/*
 * bge_add_intrs:
 *
 * Register FIXED or MSI interrupts.
 */
static int
bge_add_intrs(bge_t *bgep, int	intr_type)
{
	dev_info_t	*dip = bgep->devinfo;
	int		avail, actual, intr_size, count = 0;
	int		i, flag, ret;

	bge_log(bgep, "bge_add_intrs: interrupt type 0x%x\n", intr_type);

	/* Get number of interrupts */
	ret = ddi_intr_get_nintrs(dip, intr_type, &count);
	if ((ret != DDI_SUCCESS) || (count == 0)) {
		bge_error(bgep, "ddi_intr_get_nintrs() failure, ret: %d, "
		    "count: %d", ret, count);

		return (DDI_FAILURE);
	}

	/* Get number of available interrupts */
	ret = ddi_intr_get_navail(dip, intr_type, &avail);
	if ((ret != DDI_SUCCESS) || (avail == 0)) {
		bge_error(bgep, "ddi_intr_get_navail() failure, "
		    "ret: %d, avail: %d\n", ret, avail);

		return (DDI_FAILURE);
	}

	if (avail < count) {
		bge_log(bgep, "nitrs() returned %d, navail returned %d\n",
		    count, avail);
	}

	/*
	 * BGE hardware generates only single MSI even though it claims
	 * to support multiple MSIs. So, hard code MSI count value to 1.
	 */
	if (intr_type == DDI_INTR_TYPE_MSI) {
		count = 1;
		flag = DDI_INTR_ALLOC_STRICT;
	} else {
		flag = DDI_INTR_ALLOC_NORMAL;
	}

	/* Allocate an array of interrupt handles */
	intr_size = count * sizeof (ddi_intr_handle_t);
	bgep->htable = kmem_alloc(intr_size, KM_SLEEP);

	/* Call ddi_intr_alloc() */
	ret = ddi_intr_alloc(dip, bgep->htable, intr_type, 0,
	    count, &actual, flag);

	if ((ret != DDI_SUCCESS) || (actual == 0)) {
		bge_error(bgep, "ddi_intr_alloc() failed %d\n", ret);

		kmem_free(bgep->htable, intr_size);
		return (DDI_FAILURE);
	}

	if (actual < count) {
		bge_log(bgep, "Requested: %d, Received: %d\n", count, actual);
	}

	bgep->intr_cnt = actual;

	/*
	 * Get priority for first msi, assume remaining are all the same
	 */
	if ((ret = ddi_intr_get_pri(bgep->htable[0], &bgep->intr_pri)) !=
	    DDI_SUCCESS) {
		bge_error(bgep, "ddi_intr_get_pri() failed %d\n", ret);

		/* Free already allocated intr */
		for (i = 0; i < actual; i++) {
			(void) ddi_intr_free(bgep->htable[i]);
		}

		kmem_free(bgep->htable, intr_size);
		return (DDI_FAILURE);
	}

	/* Call ddi_intr_add_handler() */
	for (i = 0; i < actual; i++) {
		if ((ret = ddi_intr_add_handler(bgep->htable[i], bge_intr,
		    (caddr_t)bgep, (caddr_t)(uintptr_t)i)) != DDI_SUCCESS) {
			bge_error(bgep, "ddi_intr_add_handler() "
			    "failed %d\n", ret);

			/* Free already allocated intr */
			for (i = 0; i < actual; i++) {
				(void) ddi_intr_free(bgep->htable[i]);
			}

			kmem_free(bgep->htable, intr_size);
			return (DDI_FAILURE);
		}
	}

	if ((ret = ddi_intr_get_cap(bgep->htable[0], &bgep->intr_cap))
		!= DDI_SUCCESS) {
		bge_error(bgep, "ddi_intr_get_cap() failed %d\n", ret);

		for (i = 0; i < actual; i++) {
			(void) ddi_intr_remove_handler(bgep->htable[i]);
			(void) ddi_intr_free(bgep->htable[i]);
		}

		kmem_free(bgep->htable, intr_size);
		return (DDI_FAILURE);
	}

	return (DDI_SUCCESS);
}

/*
 * bge_rem_intrs:
 *
 * Unregister FIXED or MSI interrupts
 */
static void
bge_rem_intrs(bge_t *bgep)
{
	int	i;

	bge_log(bgep, "bge_rem_intrs\n");

	/* Disable all interrupts */
	if (bgep->intr_cap & DDI_INTR_FLAG_BLOCK) {
		/* Call ddi_intr_block_disable() */
		(void) ddi_intr_block_disable(bgep->htable, bgep->intr_cnt);
	} else {
		for (i = 0; i < bgep->intr_cnt; i++) {
			(void) ddi_intr_disable(bgep->htable[i]);
		}
	}

	/* Call ddi_intr_remove_handler() */
	for (i = 0; i < bgep->intr_cnt; i++) {
		(void) ddi_intr_remove_handler(bgep->htable[i]);
		(void) ddi_intr_free(bgep->htable[i]);
	}

	kmem_free(bgep->htable, bgep->intr_cnt * sizeof (ddi_intr_handle_t));
}