1 files changed, 1703 insertions, 0 deletions

diff --git a/sys/dev/qlxgbe/ql_os.c b/sys/dev/qlxgbe/ql_os.c
new file mode 100644
index 000000000000..757d6122f6f4
--- /dev/null
+++ b/sys/dev/qlxgbe/ql_os.c
@@ -0,0 +1,1703 @@
+/*
+ * Copyright (c) 2013-2014 Qlogic Corporation
+ * 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.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
+ */
+
+/*
+ * File: ql_os.c
+ * Author : David C Somayajulu, Qlogic Corporation, Aliso Viejo, CA 92656.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+
+#include "ql_os.h"
+#include "ql_hw.h"
+#include "ql_def.h"
+#include "ql_inline.h"
+#include "ql_ver.h"
+#include "ql_glbl.h"
+#include "ql_dbg.h"
+#include <sys/smp.h>
+
+/*
+ * Some PCI Configuration Space Related Defines
+ */
+
+#ifndef PCI_VENDOR_QLOGIC
+#define PCI_VENDOR_QLOGIC	0x1077
+#endif
+
+#ifndef PCI_PRODUCT_QLOGIC_ISP8030
+#define PCI_PRODUCT_QLOGIC_ISP8030	0x8030
+#endif
+
+#define PCI_QLOGIC_ISP8030 \
+	((PCI_PRODUCT_QLOGIC_ISP8030 << 16) | PCI_VENDOR_QLOGIC)
+
+/*
+ * static functions
+ */
+static int qla_alloc_parent_dma_tag(qla_host_t *ha);
+static void qla_free_parent_dma_tag(qla_host_t *ha);
+static int qla_alloc_xmt_bufs(qla_host_t *ha);
+static void qla_free_xmt_bufs(qla_host_t *ha);
+static int qla_alloc_rcv_bufs(qla_host_t *ha);
+static void qla_free_rcv_bufs(qla_host_t *ha);
+static void qla_clear_tx_buf(qla_host_t *ha, qla_tx_buf_t *txb);
+
+static void qla_init_ifnet(device_t dev, qla_host_t *ha);
+static int qla_sysctl_get_stats(SYSCTL_HANDLER_ARGS);
+static int qla_sysctl_get_link_status(SYSCTL_HANDLER_ARGS);
+static void qla_release(qla_host_t *ha);
+static void qla_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs,
+		int error);
+static void qla_stop(qla_host_t *ha);
+static int qla_send(qla_host_t *ha, struct mbuf **m_headp);
+static void qla_tx_done(void *context, int pending);
+static void qla_get_peer(qla_host_t *ha);
+static void qla_error_recovery(void *context, int pending);
+
+/*
+ * Hooks to the Operating Systems
+ */
+static int qla_pci_probe (device_t);
+static int qla_pci_attach (device_t);
+static int qla_pci_detach (device_t);
+
+static void qla_init(void *arg);
+static int qla_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
+static int qla_media_change(struct ifnet *ifp);
+static void qla_media_status(struct ifnet *ifp, struct ifmediareq *ifmr);
+static void qla_start(struct ifnet *ifp);
+
+static device_method_t qla_pci_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, qla_pci_probe),
+	DEVMETHOD(device_attach, qla_pci_attach),
+	DEVMETHOD(device_detach, qla_pci_detach),
+	{ 0, 0 }
+};
+
+static driver_t qla_pci_driver = {
+	"ql", qla_pci_methods, sizeof (qla_host_t),
+};
+
+static devclass_t qla83xx_devclass;
+
+DRIVER_MODULE(qla83xx, pci, qla_pci_driver, qla83xx_devclass, 0, 0);
+
+MODULE_DEPEND(qla83xx, pci, 1, 1, 1);
+MODULE_DEPEND(qla83xx, ether, 1, 1, 1);
+
+MALLOC_DEFINE(M_QLA83XXBUF, "qla83xxbuf", "Buffers for qla83xx driver");
+
+#define QL_STD_REPLENISH_THRES		0
+#define QL_JUMBO_REPLENISH_THRES	32
+
+
+static char dev_str[64];
+
+/*
+ * Name:	qla_pci_probe
+ * Function:	Validate the PCI device to be a QLA80XX device
+ */
+static int
+qla_pci_probe(device_t dev)
+{
+        switch ((pci_get_device(dev) << 16) | (pci_get_vendor(dev))) {
+        case PCI_QLOGIC_ISP8030:
+		snprintf(dev_str, sizeof(dev_str), "%s v%d.%d.%d",
+			"Qlogic ISP 83xx PCI CNA Adapter-Ethernet Function",
+			QLA_VERSION_MAJOR, QLA_VERSION_MINOR,
+			QLA_VERSION_BUILD);
+                device_set_desc(dev, dev_str);
+                break;
+        default:
+                return (ENXIO);
+        }
+
+        if (bootverbose)
+                printf("%s: %s\n ", __func__, dev_str);
+
+        return (BUS_PROBE_DEFAULT);
+}
+
+static void
+qla_add_sysctls(qla_host_t *ha)
+{
+        device_t dev = ha->pci_dev;
+
+        SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+                OID_AUTO, "stats", CTLTYPE_INT | CTLFLAG_RW,
+                (void *)ha, 0,
+                qla_sysctl_get_stats, "I", "Statistics");
+
+        SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+                OID_AUTO, "fw_version", CTLFLAG_RD,
+                &ha->fw_ver_str, 0, "firmware version");
+
+        SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+                OID_AUTO, "link_status", CTLTYPE_INT | CTLFLAG_RW,
+                (void *)ha, 0,
+                qla_sysctl_get_link_status, "I", "Link Status");
+
+	ha->dbg_level = 0;
+        SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+                OID_AUTO, "debug", CTLFLAG_RW,
+                &ha->dbg_level, ha->dbg_level, "Debug Level");
+
+	ha->std_replenish = QL_STD_REPLENISH_THRES;
+        SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+                OID_AUTO, "std_replenish", CTLFLAG_RW,
+                &ha->std_replenish, ha->std_replenish,
+                "Threshold for Replenishing Standard Frames");
+
+        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+                OID_AUTO, "ipv4_lro",
+                CTLFLAG_RD, &ha->ipv4_lro,
+                "number of ipv4 lro completions");
+
+        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+                OID_AUTO, "ipv6_lro",
+                CTLFLAG_RD, &ha->ipv6_lro,
+                "number of ipv6 lro completions");
+
+	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
+		SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+		OID_AUTO, "tx_tso_frames",
+		CTLFLAG_RD, &ha->tx_tso_frames,
+		"number of Tx TSO Frames");
+
+	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
+                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
+		OID_AUTO, "hw_vlan_tx_frames",
+		CTLFLAG_RD, &ha->hw_vlan_tx_frames,
+		"number of Tx VLAN Frames");
+
+        return;
+}
+
+static void
+qla_watchdog(void *arg)
+{
+	qla_host_t *ha = arg;
+	qla_hw_t *hw;
+	struct ifnet *ifp;
+	uint32_t i;
+	qla_hw_tx_cntxt_t *hw_tx_cntxt;
+
+	hw = &ha->hw;
+	ifp = ha->ifp;
+
+        if (ha->flags.qla_watchdog_exit) {
+		ha->qla_watchdog_exited = 1;
+		return;
+	}
+	ha->qla_watchdog_exited = 0;
+
+	if (!ha->flags.qla_watchdog_pause) {
+		if (ql_hw_check_health(ha) || ha->qla_initiate_recovery ||
+			(ha->msg_from_peer == QL_PEER_MSG_RESET)) {
+			ha->qla_watchdog_paused = 1;
+			ha->flags.qla_watchdog_pause = 1;
+			ha->qla_initiate_recovery = 0;
+			ha->err_inject = 0;
+			taskqueue_enqueue(ha->err_tq, &ha->err_task);
+		} else {
+			for (i = 0; i < ha->hw.num_tx_rings; i++) {
+				hw_tx_cntxt = &hw->tx_cntxt[i];
+				if (qla_le32_to_host(*(hw_tx_cntxt->tx_cons)) !=
+					hw_tx_cntxt->txr_comp) {
+					taskqueue_enqueue(ha->tx_tq,
+						&ha->tx_task);
+					break;
+				}
+			}
+
+			if ((ifp->if_snd.ifq_head != NULL) && QL_RUNNING(ifp)) {
+				taskqueue_enqueue(ha->tx_tq, &ha->tx_task);
+			}
+			ha->qla_watchdog_paused = 0;
+		}
+
+	} else {
+		ha->qla_watchdog_paused = 1;
+	}
+
+	ha->watchdog_ticks = ha->watchdog_ticks++ % 1000;
+	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
+		qla_watchdog, ha);
+}
+
+/*
+ * Name:	qla_pci_attach
+ * Function:	attaches the device to the operating system
+ */
+static int
+qla_pci_attach(device_t dev)
+{
+	qla_host_t *ha = NULL;
+	uint32_t rsrc_len;
+	int i;
+
+	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
+
+        if ((ha = device_get_softc(dev)) == NULL) {
+                device_printf(dev, "cannot get softc\n");
+                return (ENOMEM);
+        }
+
+        memset(ha, 0, sizeof (qla_host_t));
+
+        if (pci_get_device(dev) != PCI_PRODUCT_QLOGIC_ISP8030) {
+                device_printf(dev, "device is not ISP8030\n");
+                return (ENXIO);
+	}
+
+        ha->pci_func = pci_get_function(dev);
+
+        ha->pci_dev = dev;
+
+	pci_enable_busmaster(dev);
+
+	ha->reg_rid = PCIR_BAR(0);
+	ha->pci_reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ha->reg_rid,
+				RF_ACTIVE);
+
+        if (ha->pci_reg == NULL) {
+                device_printf(dev, "unable to map any ports\n");
+                goto qla_pci_attach_err;
+        }
+
+	rsrc_len = (uint32_t) bus_get_resource_count(dev, SYS_RES_MEMORY,
+					ha->reg_rid);
+
+	mtx_init(&ha->hw_lock, "qla83xx_hw_lock", MTX_NETWORK_LOCK, MTX_DEF);
+
+	mtx_init(&ha->tx_lock, "qla83xx_tx_lock", MTX_NETWORK_LOCK, MTX_DEF);
+
+	qla_add_sysctls(ha);
+	ql_hw_add_sysctls(ha);
+
+	ha->flags.lock_init = 1;
+
+	ha->reg_rid1 = PCIR_BAR(2);
+	ha->pci_reg1 = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+			&ha->reg_rid1, RF_ACTIVE);
+
+	ha->msix_count = pci_msix_count(dev);
+
+	if (ha->msix_count < (ha->hw.num_sds_rings + 1)) {
+		device_printf(dev, "%s: msix_count[%d] not enough\n", __func__,
+			ha->msix_count);
+		goto qla_pci_attach_err;
+	}
+
+	QL_DPRINT2(ha, (dev, "%s: ha %p pci_func 0x%x rsrc_count 0x%08x"
+		" msix_count 0x%x pci_reg %p\n", __func__, ha,
+		ha->pci_func, rsrc_len, ha->msix_count, ha->pci_reg));
+
+	ha->msix_count = ha->hw.num_sds_rings + 1;
+
+	if (pci_alloc_msix(dev, &ha->msix_count)) {
+		device_printf(dev, "%s: pci_alloc_msi[%d] failed\n", __func__,
+			ha->msix_count);
+		ha->msix_count = 0;
+		goto qla_pci_attach_err;
+	}
+
+	ha->mbx_irq_rid = 1;
+	ha->mbx_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
+				&ha->mbx_irq_rid,
+				(RF_ACTIVE | RF_SHAREABLE));
+	if (ha->mbx_irq == NULL) {
+		device_printf(dev, "could not allocate mbx interrupt\n");
+		goto qla_pci_attach_err;
+	}
+	if (bus_setup_intr(dev, ha->mbx_irq, (INTR_TYPE_NET | INTR_MPSAFE),
+		NULL, ql_mbx_isr, ha, &ha->mbx_handle)) {
+		device_printf(dev, "could not setup mbx interrupt\n");
+		goto qla_pci_attach_err;
+	}
+
+
+	for (i = 0; i < ha->hw.num_sds_rings; i++) {
+		ha->irq_vec[i].sds_idx = i;
+                ha->irq_vec[i].ha = ha;
+                ha->irq_vec[i].irq_rid = 2 + i;
+
+		ha->irq_vec[i].irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
+				&ha->irq_vec[i].irq_rid,
+				(RF_ACTIVE | RF_SHAREABLE));
+
+		if (ha->irq_vec[i].irq == NULL) {
+			device_printf(dev, "could not allocate interrupt\n");
+			goto qla_pci_attach_err;
+		}
+		if (bus_setup_intr(dev, ha->irq_vec[i].irq,
+			(INTR_TYPE_NET | INTR_MPSAFE),
+			NULL, ql_isr, &ha->irq_vec[i],
+			&ha->irq_vec[i].handle)) {
+			device_printf(dev, "could not setup interrupt\n");
+			goto qla_pci_attach_err;
+		}
+	}
+
+	printf("%s: mp__ncpus %d sds %d rds %d msi-x %d\n", __func__, mp_ncpus,
+		ha->hw.num_sds_rings, ha->hw.num_rds_rings, ha->msix_count);
+
+	/* initialize hardware */
+	if (ql_init_hw(ha)) {
+		device_printf(dev, "%s: ql_init_hw failed\n", __func__);
+		goto qla_pci_attach_err;
+	}
+
+	device_printf(dev, "%s: firmware[%d.%d.%d.%d]\n", __func__,
+		ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
+		ha->fw_ver_build);
+        snprintf(ha->fw_ver_str, sizeof(ha->fw_ver_str), "%d.%d.%d.%d",
+                        ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
+                        ha->fw_ver_build);
+
+	ql_read_mac_addr(ha);
+
+	/* allocate parent dma tag */
+	if (qla_alloc_parent_dma_tag(ha)) {
+		device_printf(dev, "%s: qla_alloc_parent_dma_tag failed\n",
+			__func__);
+		goto qla_pci_attach_err;
+	}
+
+	/* alloc all dma buffers */
+	if (ql_alloc_dma(ha)) {
+		device_printf(dev, "%s: ql_alloc_dma failed\n", __func__);
+		goto qla_pci_attach_err;
+	}
+	qla_get_peer(ha);
+
+	/* create the o.s ethernet interface */
+	qla_init_ifnet(dev, ha);
+
+	ha->flags.qla_watchdog_active = 1;
+	ha->flags.qla_watchdog_pause = 1;
+
+
+	TASK_INIT(&ha->tx_task, 0, qla_tx_done, ha);
+	ha->tx_tq = taskqueue_create_fast("qla_txq", M_NOWAIT,
+			taskqueue_thread_enqueue, &ha->tx_tq);
+	taskqueue_start_threads(&ha->tx_tq, 1, PI_NET, "%s txq",
+		device_get_nameunit(ha->pci_dev));
+	
+	callout_init(&ha->tx_callout, TRUE);
+	ha->flags.qla_callout_init = 1;
+
+	/* create ioctl device interface */
+	if (ql_make_cdev(ha)) {
+		device_printf(dev, "%s: ql_make_cdev failed\n", __func__);
+		goto qla_pci_attach_err;
+	}
+
+	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
+		qla_watchdog, ha);
+
+	TASK_INIT(&ha->err_task, 0, qla_error_recovery, ha);
+	ha->err_tq = taskqueue_create_fast("qla_errq", M_NOWAIT,
+			taskqueue_thread_enqueue, &ha->err_tq);
+	taskqueue_start_threads(&ha->err_tq, 1, PI_NET, "%s errq",
+		device_get_nameunit(ha->pci_dev));
+
+	QL_DPRINT2(ha, (dev, "%s: exit 0\n", __func__));
+        return (0);
+
+qla_pci_attach_err:
+
+	qla_release(ha);
+
+	QL_DPRINT2(ha, (dev, "%s: exit ENXIO\n", __func__));
+        return (ENXIO);
+}
+
+/*
+ * Name:	qla_pci_detach
+ * Function:	Unhooks the device from the operating system
+ */
+static int
+qla_pci_detach(device_t dev)
+{
+	qla_host_t *ha = NULL;
+	struct ifnet *ifp;
+
+	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
+
+        if ((ha = device_get_softc(dev)) == NULL) {
+                device_printf(dev, "cannot get softc\n");
+                return (ENOMEM);
+        }
+
+	ifp = ha->ifp;
+
+	(void)QLA_LOCK(ha, __func__, 0);
+	qla_stop(ha);
+	QLA_UNLOCK(ha, __func__);
+
+	qla_release(ha);
+
+	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
+
+        return (0);
+}
+
+/*
+ * SYSCTL Related Callbacks
+ */
+static int
+qla_sysctl_get_stats(SYSCTL_HANDLER_ARGS)
+{
+	int err, ret = 0;
+	qla_host_t *ha;
+
+	err = sysctl_handle_int(oidp, &ret, 0, req);
+
+	if (err || !req->newptr)
+		return (err);
+
+	if (ret == 1) {
+		ha = (qla_host_t *)arg1;
+		ql_get_stats(ha);
+	}
+	return (err);
+}
+static int
+qla_sysctl_get_link_status(SYSCTL_HANDLER_ARGS)
+{
+	int err, ret = 0;
+	qla_host_t *ha;
+
+	err = sysctl_handle_int(oidp, &ret, 0, req);
+
+	if (err || !req->newptr)
+		return (err);
+
+	if (ret == 1) {
+		ha = (qla_host_t *)arg1;
+		ql_hw_link_status(ha);
+	}
+	return (err);
+}
+
+/*
+ * Name:	qla_release
+ * Function:	Releases the resources allocated for the device
+ */
+static void
+qla_release(qla_host_t *ha)
+{
+	device_t dev;
+	int i;
+
+	dev = ha->pci_dev;
+
+	if (ha->err_tq) {
+		taskqueue_drain(ha->err_tq, &ha->err_task);
+		taskqueue_free(ha->err_tq);
+	}
+
+	if (ha->tx_tq) {
+		taskqueue_drain(ha->tx_tq, &ha->tx_task);
+		taskqueue_free(ha->tx_tq);
+	}
+
+	ql_del_cdev(ha);
+
+	if (ha->flags.qla_watchdog_active) {
+		ha->flags.qla_watchdog_exit = 1;
+
+		while (ha->qla_watchdog_exited == 0)
+			qla_mdelay(__func__, 1);
+	}
+
+	if (ha->flags.qla_callout_init)
+		callout_stop(&ha->tx_callout);
+
+	if (ha->ifp != NULL)
+		ether_ifdetach(ha->ifp);
+
+	ql_free_dma(ha); 
+	qla_free_parent_dma_tag(ha);
+
+	if (ha->mbx_handle)
+		(void)bus_teardown_intr(dev, ha->mbx_irq, ha->mbx_handle);
+
+	if (ha->mbx_irq)
+		(void) bus_release_resource(dev, SYS_RES_IRQ, ha->mbx_irq_rid,
+				ha->mbx_irq);
+
+	for (i = 0; i < ha->hw.num_sds_rings; i++) {
+
+		if (ha->irq_vec[i].handle) {
+			(void)bus_teardown_intr(dev, ha->irq_vec[i].irq,
+					ha->irq_vec[i].handle);
+		}
+			
+		if (ha->irq_vec[i].irq) {
+			(void)bus_release_resource(dev, SYS_RES_IRQ,
+				ha->irq_vec[i].irq_rid,
+				ha->irq_vec[i].irq);
+		}
+	}
+
+	if (ha->msix_count)
+		pci_release_msi(dev);
+
+	if (ha->flags.lock_init) {
+		mtx_destroy(&ha->tx_lock);
+		mtx_destroy(&ha->hw_lock);
+	}
+
+        if (ha->pci_reg)
+                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid,
+				ha->pci_reg);
+
+        if (ha->pci_reg1)
+                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid1,
+				ha->pci_reg1);
+}
+
+/*
+ * DMA Related Functions
+ */
+
+static void
+qla_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
+{
+        *((bus_addr_t *)arg) = 0;
+
+        if (error) {
+                printf("%s: bus_dmamap_load failed (%d)\n", __func__, error);
+                return;
+	}
+
+        *((bus_addr_t *)arg) = segs[0].ds_addr;
+
+	return;
+}
+
+int
+ql_alloc_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
+{
+        int             ret = 0;
+        device_t        dev;
+        bus_addr_t      b_addr;
+
+        dev = ha->pci_dev;
+
+        QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
+
+        ret = bus_dma_tag_create(
+                        ha->parent_tag,/* parent */
+                        dma_buf->alignment,
+                        ((bus_size_t)(1ULL << 32)),/* boundary */
+                        BUS_SPACE_MAXADDR,      /* lowaddr */
+                        BUS_SPACE_MAXADDR,      /* highaddr */
+                        NULL, NULL,             /* filter, filterarg */
+                        dma_buf->size,          /* maxsize */
+                        1,                      /* nsegments */
+                        dma_buf->size,          /* maxsegsize */
+                        0,                      /* flags */
+                        NULL, NULL,             /* lockfunc, lockarg */
+                        &dma_buf->dma_tag);
+
+        if (ret) {
+                device_printf(dev, "%s: could not create dma tag\n", __func__);
+                goto ql_alloc_dmabuf_exit;
+        }
+        ret = bus_dmamem_alloc(dma_buf->dma_tag,
+                        (void **)&dma_buf->dma_b,
+                        (BUS_DMA_ZERO | BUS_DMA_COHERENT | BUS_DMA_NOWAIT),
+                        &dma_buf->dma_map);
+        if (ret) {
+                bus_dma_tag_destroy(dma_buf->dma_tag);
+                device_printf(dev, "%s: bus_dmamem_alloc failed\n", __func__);
+                goto ql_alloc_dmabuf_exit;
+        }
+
+        ret = bus_dmamap_load(dma_buf->dma_tag,
+                        dma_buf->dma_map,
+                        dma_buf->dma_b,
+                        dma_buf->size,
+                        qla_dmamap_callback,
+                        &b_addr, BUS_DMA_NOWAIT);
+
+        if (ret || !b_addr) {
+                bus_dma_tag_destroy(dma_buf->dma_tag);
+                bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b,
+                        dma_buf->dma_map);
+                ret = -1;
+                goto ql_alloc_dmabuf_exit;
+        }
+
+        dma_buf->dma_addr = b_addr;
+
+ql_alloc_dmabuf_exit:
+        QL_DPRINT2(ha, (dev, "%s: exit ret 0x%08x tag %p map %p b %p sz 0x%x\n",
+                __func__, ret, (void *)dma_buf->dma_tag,
+                (void *)dma_buf->dma_map, (void *)dma_buf->dma_b,
+		dma_buf->size));
+
+        return ret;
+}
+
+void
+ql_free_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
+{
+        bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b, dma_buf->dma_map);
+        bus_dma_tag_destroy(dma_buf->dma_tag);
+}
+
+static int
+qla_alloc_parent_dma_tag(qla_host_t *ha)
+{
+	int		ret;
+	device_t	dev;
+
+	dev = ha->pci_dev;
+
+        /*
+         * Allocate parent DMA Tag
+         */
+        ret = bus_dma_tag_create(
+                        bus_get_dma_tag(dev),   /* parent */
+                        1,((bus_size_t)(1ULL << 32)),/* alignment, boundary */
+                        BUS_SPACE_MAXADDR,      /* lowaddr */
+                        BUS_SPACE_MAXADDR,      /* highaddr */
+                        NULL, NULL,             /* filter, filterarg */
+                        BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
+                        0,                      /* nsegments */
+                        BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
+                        0,                      /* flags */
+                        NULL, NULL,             /* lockfunc, lockarg */
+                        &ha->parent_tag);
+
+        if (ret) {
+                device_printf(dev, "%s: could not create parent dma tag\n",
+                        __func__);
+		return (-1);
+        }
+
+        ha->flags.parent_tag = 1;
+	
+	return (0);
+}
+
+static void
+qla_free_parent_dma_tag(qla_host_t *ha)
+{
+        if (ha->flags.parent_tag) {
+                bus_dma_tag_destroy(ha->parent_tag);
+                ha->flags.parent_tag = 0;
+        }
+}
+
+/*
+ * Name: qla_init_ifnet
+ * Function: Creates the Network Device Interface and Registers it with the O.S
+ */
+
+static void
+qla_init_ifnet(device_t dev, qla_host_t *ha)
+{
+	struct ifnet *ifp;
+
+	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
+
+	ifp = ha->ifp = if_alloc(IFT_ETHER);
+
+	if (ifp == NULL)
+		panic("%s: cannot if_alloc()\n", device_get_nameunit(dev));
+
+	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
+
+#if __FreeBSD_version >= 1000000
+	if_initbaudrate(ifp, IF_Gbps(10));
+	ifp->if_capabilities = IFCAP_LINKSTATE;
+#else
+	ifp->if_mtu = ETHERMTU;
+	ifp->if_baudrate = (1 * 1000 * 1000 *1000);
+
+#endif /* #if __FreeBSD_version >= 1000000 */
+
+	ifp->if_init = qla_init;
+	ifp->if_softc = ha;
+	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+	ifp->if_ioctl = qla_ioctl;
+	ifp->if_start = qla_start;
+
+	IFQ_SET_MAXLEN(&ifp->if_snd, qla_get_ifq_snd_maxlen(ha));
+	ifp->if_snd.ifq_drv_maxlen = qla_get_ifq_snd_maxlen(ha);
+	IFQ_SET_READY(&ifp->if_snd);
+
+	ha->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+
+	ether_ifattach(ifp, qla_get_mac_addr(ha));
+
+	ifp->if_capabilities = IFCAP_HWCSUM |
+				IFCAP_TSO4 |
+				IFCAP_JUMBO_MTU;
+
+	ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
+	ifp->if_capabilities |= IFCAP_VLAN_HWTSO;
+
+	ifp->if_capenable = ifp->if_capabilities;
+
+	ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
+
+	ifmedia_init(&ha->media, IFM_IMASK, qla_media_change, qla_media_status);
+
+	ifmedia_add(&ha->media, (IFM_ETHER | qla_get_optics(ha) | IFM_FDX), 0,
+		NULL);
+	ifmedia_add(&ha->media, (IFM_ETHER | IFM_AUTO), 0, NULL);
+
+	ifmedia_set(&ha->media, (IFM_ETHER | IFM_AUTO));
+
+	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
+
+	return;
+}
+
+static void
+qla_init_locked(qla_host_t *ha)
+{
+	struct ifnet *ifp = ha->ifp;
+
+	qla_stop(ha);
+
+	if (qla_alloc_xmt_bufs(ha) != 0) 
+		return;
+
+	if (qla_alloc_rcv_bufs(ha) != 0)
+		return;
+
+	bcopy(IF_LLADDR(ha->ifp), ha->hw.mac_addr, ETHER_ADDR_LEN);
+
+	ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_TSO;
+
+	ha->flags.stop_rcv = 0;
+ 	if (ql_init_hw_if(ha) == 0) {
+		ifp = ha->ifp;
+		ifp->if_drv_flags |= IFF_DRV_RUNNING;
+		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+		ha->flags.qla_watchdog_pause = 0;
+		ha->hw_vlan_tx_frames = 0;
+		ha->tx_tso_frames = 0;
+	}
+
+	return;
+}
+
+static void
+qla_init(void *arg)
+{
+	qla_host_t *ha;
+
+	ha = (qla_host_t *)arg;
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
+
+	(void)QLA_LOCK(ha, __func__, 0);
+	qla_init_locked(ha);
+	QLA_UNLOCK(ha, __func__);
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
+}
+
+static int
+qla_set_multi(qla_host_t *ha, uint32_t add_multi)
+{
+	uint8_t mta[Q8_MAX_NUM_MULTICAST_ADDRS * Q8_MAC_ADDR_LEN];
+	struct ifmultiaddr *ifma;
+	int mcnt = 0;
+	struct ifnet *ifp = ha->ifp;
+	int ret = 0;
+
+	if_maddr_rlock(ifp);
+
+	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+
+		if (ifma->ifma_addr->sa_family != AF_LINK)
+			continue;
+
+		if (mcnt == Q8_MAX_NUM_MULTICAST_ADDRS)
+			break;
+
+		bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
+			&mta[mcnt * Q8_MAC_ADDR_LEN], Q8_MAC_ADDR_LEN);
+
+		mcnt++;
+	}
+
+	if_maddr_runlock(ifp);
+
+	if (QLA_LOCK(ha, __func__, 1) == 0) {
+		ret = ql_hw_set_multi(ha, mta, mcnt, add_multi);
+		QLA_UNLOCK(ha, __func__);
+	}
+
+	return (ret);
+}
+
+static int
+qla_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+	int ret = 0;
+	struct ifreq *ifr = (struct ifreq *)data;
+	struct ifaddr *ifa = (struct ifaddr *)data;
+	qla_host_t *ha;
+
+	ha = (qla_host_t *)ifp->if_softc;
+
+	switch (cmd) {
+	case SIOCSIFADDR:
+		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFADDR (0x%lx)\n",
+			__func__, cmd));
+
+		if (ifa->ifa_addr->sa_family == AF_INET) {
+			ifp->if_flags |= IFF_UP;
+			if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
+				(void)QLA_LOCK(ha, __func__, 0);
+				qla_init_locked(ha);
+				QLA_UNLOCK(ha, __func__);
+			}
+			QL_DPRINT4(ha, (ha->pci_dev,
+				"%s: SIOCSIFADDR (0x%lx) ipv4 [0x%08x]\n",
+				__func__, cmd,
+				ntohl(IA_SIN(ifa)->sin_addr.s_addr)));
+
+			arp_ifinit(ifp, ifa);
+		} else {
+			ether_ioctl(ifp, cmd, data);
+		}
+		break;
+
+	case SIOCSIFMTU:
+		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFMTU (0x%lx)\n",
+			__func__, cmd));
+
+		if (ifr->ifr_mtu > QLA_MAX_MTU) {
+			ret = EINVAL;
+		} else {
+			(void) QLA_LOCK(ha, __func__, 0);
+			ifp->if_mtu = ifr->ifr_mtu;
+			ha->max_frame_size =
+				ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+			if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
+				ret = ql_set_max_mtu(ha, ha->max_frame_size,
+					ha->hw.rcv_cntxt_id);
+			}
+
+			if (ifp->if_mtu > ETHERMTU)
+				ha->std_replenish = QL_JUMBO_REPLENISH_THRES;
+			else
+				ha->std_replenish = QL_STD_REPLENISH_THRES;
+				
+
+			QLA_UNLOCK(ha, __func__);
+
+			if (ret)
+				ret = EINVAL;
+		}
+
+		break;
+
+	case SIOCSIFFLAGS:
+		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFFLAGS (0x%lx)\n",
+			__func__, cmd));
+
+		(void)QLA_LOCK(ha, __func__, 0);
+
+		if (ifp->if_flags & IFF_UP) {
+			if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
+				if ((ifp->if_flags ^ ha->if_flags) &
+					IFF_PROMISC) {
+					ret = ql_set_promisc(ha);
+				} else if ((ifp->if_flags ^ ha->if_flags) &
+					IFF_ALLMULTI) {
+					ret = ql_set_allmulti(ha);
+				}
+			} else {
+				qla_init_locked(ha);
+				ha->max_frame_size = ifp->if_mtu +
+					ETHER_HDR_LEN + ETHER_CRC_LEN;
+				ret = ql_set_max_mtu(ha, ha->max_frame_size,
+					ha->hw.rcv_cntxt_id);
+			}
+		} else {
+			if (ifp->if_drv_flags & IFF_DRV_RUNNING)
+				qla_stop(ha);
+			ha->if_flags = ifp->if_flags;
+		}
+
+		QLA_UNLOCK(ha, __func__);
+		break;
+
+	case SIOCADDMULTI:
+		QL_DPRINT4(ha, (ha->pci_dev,
+			"%s: %s (0x%lx)\n", __func__, "SIOCADDMULTI", cmd));
+
+		if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
+			if (qla_set_multi(ha, 1))
+				ret = EINVAL;
+		}
+		break;
+
+	case SIOCDELMULTI:
+		QL_DPRINT4(ha, (ha->pci_dev,
+			"%s: %s (0x%lx)\n", __func__, "SIOCDELMULTI", cmd));
+
+		if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
+			if (qla_set_multi(ha, 0))
+				ret = EINVAL;
+		}
+		break;
+
+	case SIOCSIFMEDIA:
+	case SIOCGIFMEDIA:
+		QL_DPRINT4(ha, (ha->pci_dev,
+			"%s: SIOCSIFMEDIA/SIOCGIFMEDIA (0x%lx)\n",
+			__func__, cmd));
+		ret = ifmedia_ioctl(ifp, ifr, &ha->media, cmd);
+		break;
+
+	case SIOCSIFCAP:
+	{
+		int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
+
+		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFCAP (0x%lx)\n",
+			__func__, cmd));
+
+		if (mask & IFCAP_HWCSUM)
+			ifp->if_capenable ^= IFCAP_HWCSUM;
+		if (mask & IFCAP_TSO4)
+			ifp->if_capenable ^= IFCAP_TSO4;
+		if (mask & IFCAP_VLAN_HWTAGGING)
+			ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
+		if (mask & IFCAP_VLAN_HWTSO)
+			ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
+
+		if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
+			qla_init(ha);
+
+		VLAN_CAPABILITIES(ifp);
+		break;
+	}
+
+	default:
+		QL_DPRINT4(ha, (ha->pci_dev, "%s: default (0x%lx)\n",
+			__func__, cmd));
+		ret = ether_ioctl(ifp, cmd, data);
+		break;
+	}
+
+	return (ret);
+}
+
+static int
+qla_media_change(struct ifnet *ifp)
+{
+	qla_host_t *ha;
+	struct ifmedia *ifm;
+	int ret = 0;
+
+	ha = (qla_host_t *)ifp->if_softc;
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
+
+	ifm = &ha->media;
+
+	if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
+		ret = EINVAL;
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
+
+	return (ret);
+}
+
+static void
+qla_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+	qla_host_t *ha;
+
+	ha = (qla_host_t *)ifp->if_softc;
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
+
+	ifmr->ifm_status = IFM_AVALID;
+	ifmr->ifm_active = IFM_ETHER;
+	
+	ql_update_link_state(ha);
+	if (ha->hw.link_up) {
+		ifmr->ifm_status |= IFM_ACTIVE;
+		ifmr->ifm_active |= (IFM_FDX | qla_get_optics(ha));
+	}
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit (%s)\n", __func__,\
+		(ha->hw.link_up ? "link_up" : "link_down")));
+
+	return;
+}
+
+static void
+qla_start(struct ifnet *ifp)
+{
+	struct mbuf    *m_head;
+	qla_host_t *ha = (qla_host_t *)ifp->if_softc;
+
+	QL_DPRINT8(ha, (ha->pci_dev, "%s: enter\n", __func__));
+
+	if (!mtx_trylock(&ha->tx_lock)) {
+		QL_DPRINT8(ha, (ha->pci_dev,
+			"%s: mtx_trylock(&ha->tx_lock) failed\n", __func__));
+		return;
+	}
+
+	if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 
+		IFF_DRV_RUNNING) {
+		QL_DPRINT8(ha,
+			(ha->pci_dev, "%s: !IFF_DRV_RUNNING\n", __func__));
+		QLA_TX_UNLOCK(ha);
+		return;
+	}
+
+	if (!ha->watchdog_ticks)
+		ql_update_link_state(ha);
+
+	if (!ha->hw.link_up) {
+		QL_DPRINT8(ha, (ha->pci_dev, "%s: link down\n", __func__));
+		QLA_TX_UNLOCK(ha);
+		return;
+	}
+
+	while (ifp->if_snd.ifq_head != NULL) {
+		IF_DEQUEUE(&ifp->if_snd, m_head);
+
+		if (m_head == NULL) {
+			QL_DPRINT8(ha, (ha->pci_dev, "%s: m_head == NULL\n",
+				__func__));
+			break;
+		}
+
+		if (qla_send(ha, &m_head)) {
+			if (m_head == NULL)
+				break;
+			QL_DPRINT8(ha, (ha->pci_dev, "%s: PREPEND\n", __func__));
+			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
+			IF_PREPEND(&ifp->if_snd, m_head);
+			break;
+		}
+		/* Send a copy of the frame to the BPF listener */
+		ETHER_BPF_MTAP(ifp, m_head);
+	}
+	QLA_TX_UNLOCK(ha);
+	QL_DPRINT8(ha, (ha->pci_dev, "%s: exit\n", __func__));
+	return;
+}
+
+static int
+qla_send(qla_host_t *ha, struct mbuf **m_headp)
+{
+	bus_dma_segment_t	segs[QLA_MAX_SEGMENTS];
+	bus_dmamap_t		map;
+	int			nsegs;
+	int			ret = -1;
+	uint32_t		tx_idx;
+	struct mbuf		*m_head = *m_headp;
+	uint32_t		txr_idx = ha->txr_idx;
+
+	QL_DPRINT8(ha, (ha->pci_dev, "%s: enter\n", __func__));
+
+	if (m_head->m_flags & M_FLOWID)
+		txr_idx = m_head->m_pkthdr.flowid & (ha->hw.num_tx_rings - 1);
+
+	tx_idx = ha->hw.tx_cntxt[txr_idx].txr_next;
+	map = ha->tx_ring[txr_idx].tx_buf[tx_idx].map;
+
+	ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head, segs, &nsegs,
+			BUS_DMA_NOWAIT);
+
+	if (ret == EFBIG) {
+
+		struct mbuf *m;
+
+		QL_DPRINT8(ha, (ha->pci_dev, "%s: EFBIG [%d]\n", __func__,
+			m_head->m_pkthdr.len));
+
+		m = m_defrag(m_head, M_NOWAIT);
+		if (m == NULL) {
+			ha->err_tx_defrag++;
+			m_freem(m_head);
+			*m_headp = NULL;
+			device_printf(ha->pci_dev,
+				"%s: m_defrag() = NULL [%d]\n",
+				__func__, ret);
+			return (ENOBUFS);
+		}
+		m_head = m;
+		*m_headp = m_head;
+
+		if ((ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head,
+					segs, &nsegs, BUS_DMA_NOWAIT))) {
+
+			ha->err_tx_dmamap_load++;
+
+			device_printf(ha->pci_dev,
+				"%s: bus_dmamap_load_mbuf_sg failed0[%d, %d]\n",
+				__func__, ret, m_head->m_pkthdr.len);
+
+			if (ret != ENOMEM) {
+				m_freem(m_head);
+				*m_headp = NULL;
+			}
+			return (ret);
+		}
+
+	} else if (ret) {
+
+		ha->err_tx_dmamap_load++;
+
+		device_printf(ha->pci_dev,
+			"%s: bus_dmamap_load_mbuf_sg failed1[%d, %d]\n",
+			__func__, ret, m_head->m_pkthdr.len);
+
+		if (ret != ENOMEM) {
+			m_freem(m_head);
+			*m_headp = NULL;
+		}
+		return (ret);
+	}
+
+	QL_ASSERT(ha, (nsegs != 0), ("qla_send: empty packet"));
+
+	bus_dmamap_sync(ha->tx_tag, map, BUS_DMASYNC_PREWRITE);
+
+        if (!(ret = ql_hw_send(ha, segs, nsegs, tx_idx, m_head, txr_idx))) {
+
+		ha->tx_ring[txr_idx].count++;
+		ha->tx_ring[txr_idx].tx_buf[tx_idx].m_head = m_head;
+	} else {
+		if (ret == EINVAL) {
+			if (m_head)
+				m_freem(m_head);
+			*m_headp = NULL;
+		}
+	}
+
+	QL_DPRINT8(ha, (ha->pci_dev, "%s: exit\n", __func__));
+	return (ret);
+}
+
+static void
+qla_stop(qla_host_t *ha)
+{
+	struct ifnet *ifp = ha->ifp;
+	device_t	dev;
+
+	dev = ha->pci_dev;
+
+	ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE | IFF_DRV_RUNNING);
+
+	ha->flags.qla_watchdog_pause = 1;
+
+	while (!ha->qla_watchdog_paused)
+		qla_mdelay(__func__, 1);
+
+	ha->flags.stop_rcv = 1;
+	ql_hw_stop_rcv(ha);
+
+	ql_del_hw_if(ha);
+
+	qla_free_xmt_bufs(ha);
+	qla_free_rcv_bufs(ha);
+
+	return;
+}
+
+/*
+ * Buffer Management Functions for Transmit and Receive Rings
+ */
+static int
+qla_alloc_xmt_bufs(qla_host_t *ha)
+{
+	int ret = 0;
+	uint32_t i, j;
+	qla_tx_buf_t *txb;
+
+	if (bus_dma_tag_create(NULL,    /* parent */
+		1, 0,    /* alignment, bounds */
+		BUS_SPACE_MAXADDR,       /* lowaddr */
+		BUS_SPACE_MAXADDR,       /* highaddr */
+		NULL, NULL,      /* filter, filterarg */
+		QLA_MAX_TSO_FRAME_SIZE,     /* maxsize */
+		QLA_MAX_SEGMENTS,        /* nsegments */
+		PAGE_SIZE,        /* maxsegsize */
+		BUS_DMA_ALLOCNOW,        /* flags */
+		NULL,    /* lockfunc */
+		NULL,    /* lockfuncarg */
+		&ha->tx_tag)) {
+		device_printf(ha->pci_dev, "%s: tx_tag alloc failed\n",
+			__func__);
+		return (ENOMEM);
+	}
+
+	for (i = 0; i < ha->hw.num_tx_rings; i++) {
+		bzero((void *)ha->tx_ring[i].tx_buf,
+			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
+	}
+
+	for (j = 0; j < ha->hw.num_tx_rings; j++) {
+		for (i = 0; i < NUM_TX_DESCRIPTORS; i++) {
+
+			txb = &ha->tx_ring[j].tx_buf[i];
+
+			if ((ret = bus_dmamap_create(ha->tx_tag,
+					BUS_DMA_NOWAIT, &txb->map))) {
+
+				ha->err_tx_dmamap_create++;
+				device_printf(ha->pci_dev,
+					"%s: bus_dmamap_create failed[%d]\n",
+					__func__, ret);
+
+				qla_free_xmt_bufs(ha);
+
+				return (ret);
+			}
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Release mbuf after it sent on the wire
+ */
+static void
+qla_clear_tx_buf(qla_host_t *ha, qla_tx_buf_t *txb)
+{
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
+
+	if (txb->m_head && txb->map) {
+
+		bus_dmamap_unload(ha->tx_tag, txb->map);
+
+		m_freem(txb->m_head);
+		txb->m_head = NULL;
+	}
+
+	if (txb->map)
+		bus_dmamap_destroy(ha->tx_tag, txb->map);
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
+}
+
+static void
+qla_free_xmt_bufs(qla_host_t *ha)
+{
+	int		i, j;
+
+	for (j = 0; j < ha->hw.num_tx_rings; j++) {
+		for (i = 0; i < NUM_TX_DESCRIPTORS; i++)
+			qla_clear_tx_buf(ha, &ha->tx_ring[j].tx_buf[i]);
+	}
+
+	if (ha->tx_tag != NULL) {
+		bus_dma_tag_destroy(ha->tx_tag);
+		ha->tx_tag = NULL;
+	}
+
+	for (i = 0; i < ha->hw.num_tx_rings; i++) {
+		bzero((void *)ha->tx_ring[i].tx_buf,
+			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
+	}
+	return;
+}
+
+
+static int
+qla_alloc_rcv_std(qla_host_t *ha)
+{
+	int		i, j, k, r, ret = 0;
+	qla_rx_buf_t	*rxb;
+	qla_rx_ring_t	*rx_ring;
+
+	for (r = 0; r < ha->hw.num_rds_rings; r++) {
+
+		rx_ring = &ha->rx_ring[r];
+
+		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
+
+			rxb = &rx_ring->rx_buf[i];
+
+			ret = bus_dmamap_create(ha->rx_tag, BUS_DMA_NOWAIT,
+					&rxb->map);
+
+			if (ret) {
+				device_printf(ha->pci_dev,
+					"%s: dmamap[%d, %d] failed\n",
+					__func__, r, i);
+
+				for (k = 0; k < r; k++) {
+					for (j = 0; j < NUM_RX_DESCRIPTORS;
+						j++) {
+						rxb = &ha->rx_ring[k].rx_buf[j];
+						bus_dmamap_destroy(ha->rx_tag,
+							rxb->map);
+					}
+				}
+
+				for (j = 0; j < i; j++) {
+					bus_dmamap_destroy(ha->rx_tag,
+						rx_ring->rx_buf[j].map);
+				}
+				goto qla_alloc_rcv_std_err;
+			}
+		}
+	}
+
+	qla_init_hw_rcv_descriptors(ha);
+
+	
+	for (r = 0; r < ha->hw.num_rds_rings; r++) {
+
+		rx_ring = &ha->rx_ring[r];
+
+		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
+			rxb = &rx_ring->rx_buf[i];
+			rxb->handle = i;
+			if (!(ret = ql_get_mbuf(ha, rxb, NULL))) {
+				/*
+			 	 * set the physical address in the
+				 * corresponding descriptor entry in the
+				 * receive ring/queue for the hba 
+				 */
+				qla_set_hw_rcv_desc(ha, r, i, rxb->handle,
+					rxb->paddr,
+					(rxb->m_head)->m_pkthdr.len);
+			} else {
+				device_printf(ha->pci_dev,
+					"%s: ql_get_mbuf [%d, %d] failed\n",
+					__func__, r, i);
+				bus_dmamap_destroy(ha->rx_tag, rxb->map);
+				goto qla_alloc_rcv_std_err;
+			}
+		}
+	}
+	return 0;
+
+qla_alloc_rcv_std_err:
+	return (-1);
+}
+
+static void
+qla_free_rcv_std(qla_host_t *ha)
+{
+	int		i, r;
+	qla_rx_buf_t	*rxb;
+
+	for (r = 0; r < ha->hw.num_rds_rings; r++) {
+		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
+			rxb = &ha->rx_ring[r].rx_buf[i];
+			if (rxb->m_head != NULL) {
+				bus_dmamap_unload(ha->rx_tag, rxb->map);
+				bus_dmamap_destroy(ha->rx_tag, rxb->map);
+				m_freem(rxb->m_head);
+				rxb->m_head = NULL;
+			}
+		}
+	}
+	return;
+}
+
+static int
+qla_alloc_rcv_bufs(qla_host_t *ha)
+{
+	int		i, ret = 0;
+
+	if (bus_dma_tag_create(NULL,    /* parent */
+			1, 0,    /* alignment, bounds */
+			BUS_SPACE_MAXADDR,       /* lowaddr */
+			BUS_SPACE_MAXADDR,       /* highaddr */
+			NULL, NULL,      /* filter, filterarg */
+			MJUM9BYTES,     /* maxsize */
+			1,        /* nsegments */
+			MJUM9BYTES,        /* maxsegsize */
+			BUS_DMA_ALLOCNOW,        /* flags */
+			NULL,    /* lockfunc */
+			NULL,    /* lockfuncarg */
+			&ha->rx_tag)) {
+
+		device_printf(ha->pci_dev, "%s: rx_tag alloc failed\n",
+			__func__);
+
+		return (ENOMEM);
+	}
+
+	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
+
+	for (i = 0; i < ha->hw.num_sds_rings; i++) {
+		ha->hw.sds[i].sdsr_next = 0;
+		ha->hw.sds[i].rxb_free = NULL;
+		ha->hw.sds[i].rx_free = 0;
+	}
+
+	ret = qla_alloc_rcv_std(ha);
+
+	return (ret);
+}
+
+static void
+qla_free_rcv_bufs(qla_host_t *ha)
+{
+	int		i;
+
+	qla_free_rcv_std(ha);
+
+	if (ha->rx_tag != NULL) {
+		bus_dma_tag_destroy(ha->rx_tag);
+		ha->rx_tag = NULL;
+	}
+
+	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
+
+	for (i = 0; i < ha->hw.num_sds_rings; i++) {
+		ha->hw.sds[i].sdsr_next = 0;
+		ha->hw.sds[i].rxb_free = NULL;
+		ha->hw.sds[i].rx_free = 0;
+	}
+
+	return;
+}
+
+int
+ql_get_mbuf(qla_host_t *ha, qla_rx_buf_t *rxb, struct mbuf *nmp)
+{
+	register struct mbuf *mp = nmp;
+	struct ifnet   		*ifp;
+	int            		ret = 0;
+	uint32_t		offset;
+	bus_dma_segment_t	segs[1];
+	int			nsegs;
+
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
+
+	ifp = ha->ifp;
+
+	if (mp == NULL) {
+
+		mp = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
+
+		if (mp == NULL) {
+			ha->err_m_getcl++;
+			ret = ENOBUFS;
+			device_printf(ha->pci_dev,
+					"%s: m_getcl failed\n", __func__);
+			goto exit_ql_get_mbuf;
+		}
+		mp->m_len = mp->m_pkthdr.len = MCLBYTES;
+	} else {
+		mp->m_len = mp->m_pkthdr.len = MCLBYTES;
+		mp->m_data = mp->m_ext.ext_buf;
+		mp->m_next = NULL;
+	}
+
+	offset = (uint32_t)((unsigned long long)mp->m_data & 0x7ULL);
+	if (offset) {
+		offset = 8 - offset;
+		m_adj(mp, offset);
+	}
+
+	/*
+	 * Using memory from the mbuf cluster pool, invoke the bus_dma
+	 * machinery to arrange the memory mapping.
+	 */
+	ret = bus_dmamap_load_mbuf_sg(ha->rx_tag, rxb->map,
+			mp, segs, &nsegs, BUS_DMA_NOWAIT);
+	rxb->paddr = segs[0].ds_addr;
+
+	if (ret || !rxb->paddr || (nsegs != 1)) {
+		m_free(mp);
+		rxb->m_head = NULL;
+		device_printf(ha->pci_dev,
+			"%s: bus_dmamap_load failed[%d, 0x%016llx, %d]\n",
+			__func__, ret, (long long unsigned int)rxb->paddr,
+			nsegs);
+                ret = -1;
+		goto exit_ql_get_mbuf;
+	}
+	rxb->m_head = mp;
+	bus_dmamap_sync(ha->rx_tag, rxb->map, BUS_DMASYNC_PREREAD);
+
+exit_ql_get_mbuf:
+	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = 0x%08x\n", __func__, ret));
+	return (ret);
+}
+
+static void
+qla_tx_done(void *context, int pending)
+{
+	qla_host_t *ha = context;
+	struct ifnet   *ifp;
+
+	ifp = ha->ifp;
+
+	if (!ifp) 
+		return;
+
+	if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
+		QL_DPRINT8(ha, (ha->pci_dev, "%s: !IFF_DRV_RUNNING\n", __func__));
+		return;
+	}
+	ql_hw_tx_done(ha);
+
+	qla_start(ha->ifp);
+}
+
+static void
+qla_get_peer(qla_host_t *ha)
+{
+	device_t *peers;
+	int count, i, slot;
+	int my_slot = pci_get_slot(ha->pci_dev);
+
+	if (device_get_children(device_get_parent(ha->pci_dev), &peers, &count))
+		return;
+
+	for (i = 0; i < count; i++) {
+		slot = pci_get_slot(peers[i]);
+
+		if ((slot >= 0) && (slot == my_slot) &&
+			(pci_get_device(peers[i]) ==
+				pci_get_device(ha->pci_dev))) {
+			if (ha->pci_dev != peers[i]) 
+				ha->peer_dev = peers[i];
+		}
+	}
+}
+
+static void
+qla_send_msg_to_peer(qla_host_t *ha, uint32_t msg_to_peer)
+{
+	qla_host_t *ha_peer;
+	
+	if (ha->peer_dev) {
+        	if ((ha_peer = device_get_softc(ha->peer_dev)) != NULL) {
+
+			ha_peer->msg_from_peer = msg_to_peer;
+		}
+	}
+}
+
+static void
+qla_error_recovery(void *context, int pending)
+{
+	qla_host_t *ha = context;
+	uint32_t msecs_100 = 100;
+	struct ifnet *ifp = ha->ifp;
+
+        (void)QLA_LOCK(ha, __func__, 0);
+
+        ha->flags.stop_rcv = 1;
+
+        ql_hw_stop_rcv(ha);
+
+        ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE | IFF_DRV_RUNNING);
+
+        QLA_UNLOCK(ha, __func__);
+
+	ql_minidump(ha);
+	
+	if ((ha->pci_func & 0x1) == 0) {
+
+		if (!ha->msg_from_peer) 
+			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
+
+		while ((ha->msg_from_peer != QL_PEER_MSG_ACK)  && msecs_100--)
+			qla_mdelay(__func__, 100);
+
+		ha->msg_from_peer = 0;
+
+		(void) ql_init_hw(ha);
+        	qla_free_xmt_bufs(ha);
+	        qla_free_rcv_bufs(ha);
+
+		qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
+
+	} else {
+		if (ha->msg_from_peer == QL_PEER_MSG_RESET) {
+
+			ha->msg_from_peer = 0;
+
+			qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
+		} else {
+			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
+		}
+
+		while ((ha->msg_from_peer != QL_PEER_MSG_ACK)  && msecs_100--)
+			qla_mdelay(__func__, 100);
+		ha->msg_from_peer = 0;
+
+		(void) ql_init_hw(ha);
+        	qla_free_xmt_bufs(ha);
+	        qla_free_rcv_bufs(ha);
+	}
+        (void)QLA_LOCK(ha, __func__, 0);
+
+	if (qla_alloc_xmt_bufs(ha) != 0) {
+        	QLA_UNLOCK(ha, __func__);
+                return;
+	}
+
+        if (qla_alloc_rcv_bufs(ha) != 0) {
+        	QLA_UNLOCK(ha, __func__);
+                return;
+	}
+
+        ha->flags.stop_rcv = 0;
+        if (ql_init_hw_if(ha) == 0) {
+                ifp = ha->ifp;
+                ifp->if_drv_flags |= IFF_DRV_RUNNING;
+                ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+                ha->flags.qla_watchdog_pause = 0;
+        }
+
+        QLA_UNLOCK(ha, __func__);
+}
+