Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 1051 insertions, 0 deletions

diff --git a/drivers/net/enic/base/vnic_dev.c b/drivers/net/enic/base/vnic_dev.c
new file mode 100644
index 00000000..e8a50287
--- /dev/null
+++ b/drivers/net/enic/base/vnic_dev.c
@@ -0,0 +1,1051 @@
+/*
+ * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ *
+ * Copyright (c) 2014, Cisco Systems, Inc.
+ * 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 HOLDER 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.
+ *
+ */
+
+#include <rte_memzone.h>
+#include <rte_memcpy.h>
+#include <rte_string_fns.h>
+
+#include "vnic_dev.h"
+#include "vnic_resource.h"
+#include "vnic_devcmd.h"
+#include "vnic_stats.h"
+
+
+enum vnic_proxy_type {
+	PROXY_NONE,
+	PROXY_BY_BDF,
+	PROXY_BY_INDEX,
+};
+
+struct vnic_res {
+	void __iomem *vaddr;
+	dma_addr_t bus_addr;
+	unsigned int count;
+};
+
+struct vnic_intr_coal_timer_info {
+	u32 mul;
+	u32 div;
+	u32 max_usec;
+};
+
+struct vnic_dev {
+	void *priv;
+	struct rte_pci_device *pdev;
+	struct vnic_res res[RES_TYPE_MAX];
+	enum vnic_dev_intr_mode intr_mode;
+	struct vnic_devcmd __iomem *devcmd;
+	struct vnic_devcmd_notify *notify;
+	struct vnic_devcmd_notify notify_copy;
+	dma_addr_t notify_pa;
+	u32 notify_sz;
+	dma_addr_t linkstatus_pa;
+	struct vnic_stats *stats;
+	dma_addr_t stats_pa;
+	struct vnic_devcmd_fw_info *fw_info;
+	dma_addr_t fw_info_pa;
+	enum vnic_proxy_type proxy;
+	u32 proxy_index;
+	u64 args[VNIC_DEVCMD_NARGS];
+	u16 split_hdr_size;
+	int in_reset;
+	struct vnic_intr_coal_timer_info intr_coal_timer_info;
+	void *(*alloc_consistent)(void *priv, size_t size,
+		dma_addr_t *dma_handle, u8 *name);
+	void (*free_consistent)(struct rte_pci_device *hwdev,
+		size_t size, void *vaddr,
+		dma_addr_t dma_handle);
+};
+
+#define VNIC_MAX_RES_HDR_SIZE \
+	(sizeof(struct vnic_resource_header) + \
+	sizeof(struct vnic_resource) * RES_TYPE_MAX)
+#define VNIC_RES_STRIDE	128
+
+void *vnic_dev_priv(struct vnic_dev *vdev)
+{
+	return vdev->priv;
+}
+
+void vnic_register_cbacks(struct vnic_dev *vdev,
+	void *(*alloc_consistent)(void *priv, size_t size,
+	    dma_addr_t *dma_handle, u8 *name),
+	void (*free_consistent)(struct rte_pci_device *hwdev,
+	    size_t size, void *vaddr,
+	    dma_addr_t dma_handle))
+{
+	vdev->alloc_consistent = alloc_consistent;
+	vdev->free_consistent = free_consistent;
+}
+
+static int vnic_dev_discover_res(struct vnic_dev *vdev,
+	struct vnic_dev_bar *bar, unsigned int num_bars)
+{
+	struct vnic_resource_header __iomem *rh;
+	struct mgmt_barmap_hdr __iomem *mrh;
+	struct vnic_resource __iomem *r;
+	u8 type;
+
+	if (num_bars == 0)
+		return -EINVAL;
+
+	if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
+		pr_err("vNIC BAR0 res hdr length error\n");
+		return -EINVAL;
+	}
+
+	rh  = bar->vaddr;
+	mrh = bar->vaddr;
+	if (!rh) {
+		pr_err("vNIC BAR0 res hdr not mem-mapped\n");
+		return -EINVAL;
+	}
+
+	/* Check for mgmt vnic in addition to normal vnic */
+	if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) ||
+		(ioread32(&rh->version) != VNIC_RES_VERSION)) {
+		if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) ||
+			(ioread32(&mrh->version) != MGMTVNIC_VERSION)) {
+			pr_err("vNIC BAR0 res magic/version error " \
+				"exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n",
+				VNIC_RES_MAGIC, VNIC_RES_VERSION,
+				MGMTVNIC_MAGIC, MGMTVNIC_VERSION,
+				ioread32(&rh->magic), ioread32(&rh->version));
+			return -EINVAL;
+		}
+	}
+
+	if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC)
+		r = (struct vnic_resource __iomem *)(mrh + 1);
+	else
+		r = (struct vnic_resource __iomem *)(rh + 1);
+
+
+	while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
+		u8 bar_num = ioread8(&r->bar);
+		u32 bar_offset = ioread32(&r->bar_offset);
+		u32 count = ioread32(&r->count);
+		u32 len;
+
+		r++;
+
+		if (bar_num >= num_bars)
+			continue;
+
+		if (!bar[bar_num].len || !bar[bar_num].vaddr)
+			continue;
+
+		switch (type) {
+		case RES_TYPE_WQ:
+		case RES_TYPE_RQ:
+		case RES_TYPE_CQ:
+		case RES_TYPE_INTR_CTRL:
+			/* each count is stride bytes long */
+			len = count * VNIC_RES_STRIDE;
+			if (len + bar_offset > bar[bar_num].len) {
+				pr_err("vNIC BAR0 resource %d " \
+					"out-of-bounds, offset 0x%x + " \
+					"size 0x%x > bar len 0x%lx\n",
+					type, bar_offset,
+					len,
+					bar[bar_num].len);
+				return -EINVAL;
+			}
+			break;
+		case RES_TYPE_INTR_PBA_LEGACY:
+		case RES_TYPE_DEVCMD:
+			len = count;
+			break;
+		default:
+			continue;
+		}
+
+		vdev->res[type].count = count;
+		vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
+		    bar_offset;
+		vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
+	}
+
+	return 0;
+}
+
+unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
+	enum vnic_res_type type)
+{
+	return vdev->res[type].count;
+}
+
+void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
+	unsigned int index)
+{
+	if (!vdev->res[type].vaddr)
+		return NULL;
+
+	switch (type) {
+	case RES_TYPE_WQ:
+	case RES_TYPE_RQ:
+	case RES_TYPE_CQ:
+	case RES_TYPE_INTR_CTRL:
+		return (char __iomem *)vdev->res[type].vaddr +
+			index * VNIC_RES_STRIDE;
+	default:
+		return (char __iomem *)vdev->res[type].vaddr;
+	}
+}
+
+unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
+	unsigned int desc_count, unsigned int desc_size)
+{
+	/* The base address of the desc rings must be 512 byte aligned.
+	 * Descriptor count is aligned to groups of 32 descriptors.  A
+	 * count of 0 means the maximum 4096 descriptors.  Descriptor
+	 * size is aligned to 16 bytes.
+	 */
+
+	unsigned int count_align = 32;
+	unsigned int desc_align = 16;
+
+	ring->base_align = 512;
+
+	if (desc_count == 0)
+		desc_count = 4096;
+
+	ring->desc_count = VNIC_ALIGN(desc_count, count_align);
+
+	ring->desc_size = VNIC_ALIGN(desc_size, desc_align);
+
+	ring->size = ring->desc_count * ring->desc_size;
+	ring->size_unaligned = ring->size + ring->base_align;
+
+	return ring->size_unaligned;
+}
+
+void vnic_set_hdr_split_size(struct vnic_dev *vdev, u16 size)
+{
+	vdev->split_hdr_size = size;
+}
+
+u16 vnic_get_hdr_split_size(struct vnic_dev *vdev)
+{
+	return vdev->split_hdr_size;
+}
+
+void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
+{
+	memset(ring->descs, 0, ring->size);
+}
+
+int vnic_dev_alloc_desc_ring(__attribute__((unused)) struct vnic_dev *vdev,
+	struct vnic_dev_ring *ring,
+	unsigned int desc_count, unsigned int desc_size, unsigned int socket_id,
+	char *z_name)
+{
+	const struct rte_memzone *rz;
+
+	vnic_dev_desc_ring_size(ring, desc_count, desc_size);
+
+	rz = rte_memzone_reserve_aligned(z_name,
+		ring->size_unaligned, socket_id,
+		0, ENIC_ALIGN);
+	if (!rz) {
+		pr_err("Failed to allocate ring (size=%d), aborting\n",
+			(int)ring->size);
+		return -ENOMEM;
+	}
+
+	ring->descs_unaligned = rz->addr;
+	if (!ring->descs_unaligned) {
+		pr_err("Failed to map allocated ring (size=%d), aborting\n",
+			(int)ring->size);
+		return -ENOMEM;
+	}
+
+	ring->base_addr_unaligned = (dma_addr_t)rz->phys_addr;
+
+	ring->base_addr = VNIC_ALIGN(ring->base_addr_unaligned,
+		ring->base_align);
+	ring->descs = (u8 *)ring->descs_unaligned +
+	    (ring->base_addr - ring->base_addr_unaligned);
+
+	vnic_dev_clear_desc_ring(ring);
+
+	ring->desc_avail = ring->desc_count - 1;
+
+	return 0;
+}
+
+void vnic_dev_free_desc_ring(__attribute__((unused))  struct vnic_dev *vdev,
+	struct vnic_dev_ring *ring)
+{
+	if (ring->descs)
+		ring->descs = NULL;
+}
+
+static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
+	int wait)
+{
+	struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
+	unsigned int i;
+	int delay;
+	u32 status;
+	int err;
+
+	status = ioread32(&devcmd->status);
+	if (status == 0xFFFFFFFF) {
+		/* PCI-e target device is gone */
+		return -ENODEV;
+	}
+	if (status & STAT_BUSY) {
+
+		pr_err("Busy devcmd %d\n",  _CMD_N(cmd));
+		return -EBUSY;
+	}
+
+	if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
+		for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
+			writeq(vdev->args[i], &devcmd->args[i]);
+		wmb(); /* complete all writes initiated till now */
+	}
+
+	iowrite32(cmd, &devcmd->cmd);
+
+	if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
+		return 0;
+
+	for (delay = 0; delay < wait; delay++) {
+
+		udelay(100);
+
+		status = ioread32(&devcmd->status);
+		if (status == 0xFFFFFFFF) {
+			/* PCI-e target device is gone */
+			return -ENODEV;
+		}
+
+		if (!(status & STAT_BUSY)) {
+			if (status & STAT_ERROR) {
+				err = -(int)readq(&devcmd->args[0]);
+				if (cmd != CMD_CAPABILITY)
+					pr_err("Devcmd %d failed " \
+						"with error code %d\n",
+						_CMD_N(cmd), err);
+				return err;
+			}
+
+			if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
+				rmb();/* finish all reads initiated till now */
+				for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
+					vdev->args[i] = readq(&devcmd->args[i]);
+			}
+
+			return 0;
+		}
+	}
+
+	pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
+	return -ETIMEDOUT;
+}
+
+static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
+	enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
+	u64 *a0, u64 *a1, int wait)
+{
+	u32 status;
+	int err;
+
+	memset(vdev->args, 0, sizeof(vdev->args));
+
+	vdev->args[0] = vdev->proxy_index;
+	vdev->args[1] = cmd;
+	vdev->args[2] = *a0;
+	vdev->args[3] = *a1;
+
+	err = _vnic_dev_cmd(vdev, proxy_cmd, wait);
+	if (err)
+		return err;
+
+	status = (u32)vdev->args[0];
+	if (status & STAT_ERROR) {
+		err = (int)vdev->args[1];
+		if (err != ERR_ECMDUNKNOWN ||
+		    cmd != CMD_CAPABILITY)
+			pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd));
+		return err;
+	}
+
+	*a0 = vdev->args[1];
+	*a1 = vdev->args[2];
+
+	return 0;
+}
+
+static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
+	enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
+{
+	int err;
+
+	vdev->args[0] = *a0;
+	vdev->args[1] = *a1;
+
+	err = _vnic_dev_cmd(vdev, cmd, wait);
+
+	*a0 = vdev->args[0];
+	*a1 = vdev->args[1];
+
+	return err;
+}
+
+void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index)
+{
+	vdev->proxy = PROXY_BY_INDEX;
+	vdev->proxy_index = index;
+}
+
+void vnic_dev_cmd_proxy_by_bdf_start(struct vnic_dev *vdev, u16 bdf)
+{
+	vdev->proxy = PROXY_BY_BDF;
+	vdev->proxy_index = bdf;
+}
+
+void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev)
+{
+	vdev->proxy = PROXY_NONE;
+	vdev->proxy_index = 0;
+}
+
+int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
+	u64 *a0, u64 *a1, int wait)
+{
+	memset(vdev->args, 0, sizeof(vdev->args));
+
+	switch (vdev->proxy) {
+	case PROXY_BY_INDEX:
+		return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
+				a0, a1, wait);
+	case PROXY_BY_BDF:
+		return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
+				a0, a1, wait);
+	case PROXY_NONE:
+	default:
+		return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
+	}
+}
+
+static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
+{
+	u64 a0 = (u32)cmd, a1 = 0;
+	int wait = 1000;
+	int err;
+
+	err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
+
+	return !(err || a0);
+}
+
+int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, size_t size,
+	void *value)
+{
+	u64 a0, a1;
+	int wait = 1000;
+	int err;
+
+	a0 = offset;
+	a1 = size;
+
+	err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
+
+	switch (size) {
+	case 1:
+		*(u8 *)value = (u8)a0;
+		break;
+	case 2:
+		*(u16 *)value = (u16)a0;
+		break;
+	case 4:
+		*(u32 *)value = (u32)a0;
+		break;
+	case 8:
+		*(u64 *)value = a0;
+		break;
+	default:
+		BUG();
+		break;
+	}
+
+	return err;
+}
+
+int vnic_dev_stats_clear(struct vnic_dev *vdev)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+
+	return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
+}
+
+int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
+{
+	u64 a0, a1;
+	int wait = 1000;
+	static u32 instance;
+	char name[NAME_MAX];
+
+	if (!vdev->stats) {
+		snprintf((char *)name, sizeof(name),
+			"vnic_stats-%d", instance++);
+		vdev->stats = vdev->alloc_consistent(vdev->priv,
+			sizeof(struct vnic_stats), &vdev->stats_pa, (u8 *)name);
+		if (!vdev->stats)
+			return -ENOMEM;
+	}
+
+	*stats = vdev->stats;
+	a0 = vdev->stats_pa;
+	a1 = sizeof(struct vnic_stats);
+
+	return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
+}
+
+int vnic_dev_close(struct vnic_dev *vdev)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+
+	return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
+}
+
+/** Deprecated.  @see vnic_dev_enable_wait */
+int vnic_dev_enable(struct vnic_dev *vdev)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+
+	return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
+}
+
+int vnic_dev_enable_wait(struct vnic_dev *vdev)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+
+	if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
+		return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
+	else
+		return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
+}
+
+int vnic_dev_disable(struct vnic_dev *vdev)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+
+	return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
+}
+
+int vnic_dev_open(struct vnic_dev *vdev, int arg)
+{
+	u64 a0 = (u32)arg, a1 = 0;
+	int wait = 1000;
+
+	return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
+}
+
+int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+	int err;
+
+	*done = 0;
+
+	err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
+	if (err)
+		return err;
+
+	*done = (a0 == 0);
+
+	return 0;
+}
+
+int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
+{
+	u64 a0 = (u32)arg, a1 = 0;
+	int wait = 1000;
+
+	return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
+}
+
+int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+	int err;
+
+	*done = 0;
+
+	err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
+	if (err)
+		return err;
+
+	*done = (a0 == 0);
+
+	return 0;
+}
+
+int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
+{
+	u64 a0, a1 = 0;
+	int wait = 1000;
+	int err, i;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		mac_addr[i] = 0;
+
+	err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
+	if (err)
+		return err;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		mac_addr[i] = ((u8 *)&a0)[i];
+
+	return 0;
+}
+
+int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
+	int broadcast, int promisc, int allmulti)
+{
+	u64 a0, a1 = 0;
+	int wait = 1000;
+	int err;
+
+	a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
+	     (multicast ? CMD_PFILTER_MULTICAST : 0) |
+	     (broadcast ? CMD_PFILTER_BROADCAST : 0) |
+	     (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
+	     (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
+
+	err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
+	if (err)
+		pr_err("Can't set packet filter\n");
+
+	return err;
+}
+
+int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+	int err;
+	int i;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		((u8 *)&a0)[i] = addr[i];
+
+	err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
+	if (err)
+		pr_err("Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
+			addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
+			err);
+
+	return err;
+}
+
+int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+	int err;
+	int i;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		((u8 *)&a0)[i] = addr[i];
+
+	err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
+	if (err)
+		pr_err("Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
+			addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
+			err);
+
+	return err;
+}
+
+int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
+	u8 ig_vlan_rewrite_mode)
+{
+	u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
+	int wait = 1000;
+
+	if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
+		return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
+				&a0, &a1, wait);
+	else
+		return 0;
+}
+
+int vnic_dev_raise_intr(struct vnic_dev *vdev, u16 intr)
+{
+	u64 a0 = intr, a1 = 0;
+	int wait = 1000;
+	int err;
+
+	err = vnic_dev_cmd(vdev, CMD_IAR, &a0, &a1, wait);
+	if (err)
+		pr_err("Failed to raise INTR[%d], err %d\n", intr, err);
+
+	return err;
+}
+
+void vnic_dev_set_reset_flag(struct vnic_dev *vdev, int state)
+{
+	vdev->in_reset = state;
+}
+
+static inline int vnic_dev_in_reset(struct vnic_dev *vdev)
+{
+	return vdev->in_reset;
+}
+
+int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
+	void *notify_addr, dma_addr_t notify_pa, u16 intr)
+{
+	u64 a0, a1;
+	int wait = 1000;
+	int r;
+
+	memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
+	if (!vnic_dev_in_reset(vdev)) {
+		vdev->notify = notify_addr;
+		vdev->notify_pa = notify_pa;
+	}
+
+	a0 = (u64)notify_pa;
+	a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
+	a1 += sizeof(struct vnic_devcmd_notify);
+
+	r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
+	if (!vnic_dev_in_reset(vdev))
+		vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
+
+	return r;
+}
+
+int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
+{
+	void *notify_addr = NULL;
+	dma_addr_t notify_pa = 0;
+	char name[NAME_MAX];
+	static u32 instance;
+
+	if (vdev->notify || vdev->notify_pa) {
+		return vnic_dev_notify_setcmd(vdev, vdev->notify,
+					      vdev->notify_pa, intr);
+	}
+	if (!vnic_dev_in_reset(vdev)) {
+		snprintf((char *)name, sizeof(name),
+			"vnic_notify-%d", instance++);
+		notify_addr = vdev->alloc_consistent(vdev->priv,
+			sizeof(struct vnic_devcmd_notify),
+			&notify_pa, (u8 *)name);
+		if (!notify_addr)
+			return -ENOMEM;
+	}
+
+	return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
+}
+
+int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
+{
+	u64 a0, a1;
+	int wait = 1000;
+	int err;
+
+	a0 = 0;  /* paddr = 0 to unset notify buffer */
+	a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
+	a1 += sizeof(struct vnic_devcmd_notify);
+
+	err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
+	if (!vnic_dev_in_reset(vdev)) {
+		vdev->notify = NULL;
+		vdev->notify_pa = 0;
+		vdev->notify_sz = 0;
+	}
+
+	return err;
+}
+
+int vnic_dev_notify_unset(struct vnic_dev *vdev)
+{
+	if (vdev->notify && !vnic_dev_in_reset(vdev)) {
+		vdev->free_consistent(vdev->pdev,
+			sizeof(struct vnic_devcmd_notify),
+			vdev->notify,
+			vdev->notify_pa);
+	}
+
+	return vnic_dev_notify_unsetcmd(vdev);
+}
+
+static int vnic_dev_notify_ready(struct vnic_dev *vdev)
+{
+	u32 *words;
+	unsigned int nwords = vdev->notify_sz / 4;
+	unsigned int i;
+	u32 csum;
+
+	if (!vdev->notify || !vdev->notify_sz)
+		return 0;
+
+	do {
+		csum = 0;
+		rte_memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
+		words = (u32 *)&vdev->notify_copy;
+		for (i = 1; i < nwords; i++)
+			csum += words[i];
+	} while (csum != words[0]);
+
+	return 1;
+}
+
+int vnic_dev_init(struct vnic_dev *vdev, int arg)
+{
+	u64 a0 = (u32)arg, a1 = 0;
+	int wait = 1000;
+	int r = 0;
+
+	if (vnic_dev_capable(vdev, CMD_INIT))
+		r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
+	else {
+		vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
+		if (a0 & CMD_INITF_DEFAULT_MAC) {
+			/* Emulate these for old CMD_INIT_v1 which
+			 * didn't pass a0 so no CMD_INITF_*.
+			 */
+			vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
+			vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
+		}
+	}
+	return r;
+}
+
+int vnic_dev_deinit(struct vnic_dev *vdev)
+{
+	u64 a0 = 0, a1 = 0;
+	int wait = 1000;
+
+	return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
+}
+
+void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
+{
+	/* Default: hardware intr coal timer is in units of 1.5 usecs */
+	vdev->intr_coal_timer_info.mul = 2;
+	vdev->intr_coal_timer_info.div = 3;
+	vdev->intr_coal_timer_info.max_usec =
+		vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
+}
+
+int vnic_dev_link_status(struct vnic_dev *vdev)
+{
+	if (!vnic_dev_notify_ready(vdev))
+		return 0;
+
+	return vdev->notify_copy.link_state;
+}
+
+u32 vnic_dev_port_speed(struct vnic_dev *vdev)
+{
+	if (!vnic_dev_notify_ready(vdev))
+		return 0;
+
+	return vdev->notify_copy.port_speed;
+}
+
+void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
+	enum vnic_dev_intr_mode intr_mode)
+{
+	vdev->intr_mode = intr_mode;
+}
+
+enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
+	struct vnic_dev *vdev)
+{
+	return vdev->intr_mode;
+}
+
+u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
+{
+	return (usec * vdev->intr_coal_timer_info.mul) /
+		vdev->intr_coal_timer_info.div;
+}
+
+u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
+{
+	return (hw_cycles * vdev->intr_coal_timer_info.div) /
+		vdev->intr_coal_timer_info.mul;
+}
+
+u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
+{
+	return vdev->intr_coal_timer_info.max_usec;
+}
+
+void vnic_dev_unregister(struct vnic_dev *vdev)
+{
+	if (vdev) {
+		if (vdev->notify)
+			vdev->free_consistent(vdev->pdev,
+				sizeof(struct vnic_devcmd_notify),
+				vdev->notify,
+				vdev->notify_pa);
+		if (vdev->stats)
+			vdev->free_consistent(vdev->pdev,
+				sizeof(struct vnic_stats),
+				vdev->stats, vdev->stats_pa);
+		if (vdev->fw_info)
+			vdev->free_consistent(vdev->pdev,
+				sizeof(struct vnic_devcmd_fw_info),
+				vdev->fw_info, vdev->fw_info_pa);
+		kfree(vdev);
+	}
+}
+
+struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
+	void *priv, struct rte_pci_device *pdev, struct vnic_dev_bar *bar,
+	unsigned int num_bars)
+{
+	if (!vdev) {
+		vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
+		if (!vdev)
+			return NULL;
+	}
+
+	vdev->priv = priv;
+	vdev->pdev = pdev;
+
+	if (vnic_dev_discover_res(vdev, bar, num_bars))
+		goto err_out;
+
+	vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
+	if (!vdev->devcmd)
+		goto err_out;
+
+	return vdev;
+
+err_out:
+	vnic_dev_unregister(vdev);
+	return NULL;
+}
+
+struct rte_pci_device *vnic_dev_get_pdev(struct vnic_dev *vdev)
+{
+	return vdev->pdev;
+}
+
+int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
+{
+	u64 a0, a1 = 0;
+	int wait = 1000;
+	int i;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		((u8 *)&a0)[i] = mac_addr[i];
+
+	return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
+}
+
+/*
+ *  vnic_dev_classifier: Add/Delete classifier entries
+ *  @vdev: vdev of the device
+ *  @cmd: CLSF_ADD for Add filter
+ *        CLSF_DEL for Delete filter
+ *  @entry: In case of ADD filter, the caller passes the RQ number in this
+ *          variable.
+ *          This function stores the filter_id returned by the
+ *          firmware in the same variable before return;
+ *
+ *          In case of DEL filter, the caller passes the RQ number. Return
+ *          value is irrelevant.
+ * @data: filter data
+ */
+int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
+	struct filter *data)
+{
+	u64 a0, a1;
+	int wait = 1000;
+	dma_addr_t tlv_pa;
+	int ret = -EINVAL;
+	struct filter_tlv *tlv, *tlv_va;
+	struct filter_action *action;
+	u64 tlv_size;
+	static unsigned int unique_id;
+	char z_name[RTE_MEMZONE_NAMESIZE];
+
+	if (cmd == CLSF_ADD) {
+		tlv_size = sizeof(struct filter) +
+		    sizeof(struct filter_action) +
+		    2*sizeof(struct filter_tlv);
+		snprintf((char *)z_name, sizeof(z_name),
+			"vnic_clsf_%d", unique_id++);
+		tlv_va = vdev->alloc_consistent(vdev->priv,
+			tlv_size, &tlv_pa, (u8 *)z_name);
+		if (!tlv_va)
+			return -ENOMEM;
+		tlv = tlv_va;
+		a0 = tlv_pa;
+		a1 = tlv_size;
+		memset(tlv, 0, tlv_size);
+		tlv->type = CLSF_TLV_FILTER;
+		tlv->length = sizeof(struct filter);
+		*(struct filter *)&tlv->val = *data;
+
+		tlv = (struct filter_tlv *)((char *)tlv +
+					 sizeof(struct filter_tlv) +
+					 sizeof(struct filter));
+
+		tlv->type = CLSF_TLV_ACTION;
+		tlv->length = sizeof(struct filter_action);
+		action = (struct filter_action *)&tlv->val;
+		action->type = FILTER_ACTION_RQ_STEERING;
+		action->u.rq_idx = *entry;
+
+		ret = vnic_dev_cmd(vdev, CMD_ADD_FILTER, &a0, &a1, wait);
+		*entry = (u16)a0;
+		vdev->free_consistent(vdev->pdev, tlv_size, tlv_va, tlv_pa);
+	} else if (cmd == CLSF_DEL) {
+		a0 = *entry;
+		ret = vnic_dev_cmd(vdev, CMD_DEL_FILTER, &a0, &a1, wait);
+	}
+
+	return ret;
+}