drivers/net/enic/enic_res.c - linux - Git at Google

 /*
  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
  *
  * This program is free software; you may redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
  */

 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/pci.h>
 #include <linux/netdevice.h>

 #include "wq_enet_desc.h"
 #include "rq_enet_desc.h"
 #include "cq_enet_desc.h"
 #include "vnic_resource.h"
 #include "vnic_enet.h"
 #include "vnic_dev.h"
 #include "vnic_wq.h"
 #include "vnic_rq.h"
 #include "vnic_cq.h"
 #include "vnic_intr.h"
 #include "vnic_stats.h"
 #include "vnic_nic.h"
 #include "vnic_rss.h"
 #include "enic_res.h"
 #include "enic.h"

 int enic_get_vnic_config(struct enic *enic)
 {
 	struct vnic_enet_config *c = &enic->config;
 	int err;

 	err = vnic_dev_mac_addr(enic->vdev, enic->mac_addr);
 	if (err) {
 		dev_err(enic_get_dev(enic),
 			"Error getting MAC addr, %d\n", err);
 		return err;
 	}

 #define GET_CONFIG(m) \
 	do { \
 		err = vnic_dev_spec(enic->vdev, \
 			offsetof(struct vnic_enet_config, m), \
 			sizeof(c->m), &c->m); \
 		if (err) { \
 			dev_err(enic_get_dev(enic), \
 				"Error getting %s, %d\n", #m, err); \
 			return err; \
 		} \
 	} while (0)

 	GET_CONFIG(flags);
 	GET_CONFIG(wq_desc_count);
 	GET_CONFIG(rq_desc_count);
 	GET_CONFIG(mtu);
 	GET_CONFIG(intr_timer_type);
 	GET_CONFIG(intr_mode);
 	GET_CONFIG(intr_timer_usec);
 	GET_CONFIG(loop_tag);

 	c->wq_desc_count =
 		min_t(u32, ENIC_MAX_WQ_DESCS,
 		max_t(u32, ENIC_MIN_WQ_DESCS,
 		c->wq_desc_count));
 	c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */

 	c->rq_desc_count =
 		min_t(u32, ENIC_MAX_RQ_DESCS,
 		max_t(u32, ENIC_MIN_RQ_DESCS,
 		c->rq_desc_count));
 	c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */

 	if (c->mtu == 0)
 		c->mtu = 1500;
 	c->mtu = min_t(u16, ENIC_MAX_MTU,
 		max_t(u16, ENIC_MIN_MTU,
 		c->mtu));

 	c->intr_timer_usec = min_t(u32,
 		INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
 		c->intr_timer_usec);

 	dev_info(enic_get_dev(enic), "vNIC MAC addr %pM wq/rq %d/%d\n",
 		enic->mac_addr, c->wq_desc_count, c->rq_desc_count);
 	dev_info(enic_get_dev(enic), "vNIC mtu %d csum tx/rx %d/%d "
 		"tso/lro %d/%d intr timer %d usec\n",
 		c->mtu, ENIC_SETTING(enic, TXCSUM),
 		ENIC_SETTING(enic, RXCSUM), ENIC_SETTING(enic, TSO),
 		ENIC_SETTING(enic, LRO), c->intr_timer_usec);

 	return 0;
 }

 int enic_add_vlan(struct enic *enic, u16 vlanid)
 {
 	u64 a0 = vlanid, a1 = 0;
 	int wait = 1000;
 	int err;

 	err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
 	if (err)
 		dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err);

 	return err;
 }

 int enic_del_vlan(struct enic *enic, u16 vlanid)
 {
 	u64 a0 = vlanid, a1 = 0;
 	int wait = 1000;
 	int err;

 	err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
 	if (err)
 		dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err);

 	return err;
 }

 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
 	u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
 	u8 ig_vlan_strip_en)
 {
 	u64 a0, a1;
 	u32 nic_cfg;
 	int wait = 1000;

 	vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
 		rss_hash_type, rss_hash_bits, rss_base_cpu,
 		rss_enable, tso_ipid_split_en, ig_vlan_strip_en);

 	a0 = nic_cfg;
 	a1 = 0;

 	return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
 }

 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len)
 {
 	u64 a0 = (u64)key_pa, a1 = len;
 	int wait = 1000;

 	return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait);
 }

 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len)
 {
 	u64 a0 = (u64)cpu_pa, a1 = len;
 	int wait = 1000;

 	return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait);
 }

 void enic_free_vnic_resources(struct enic *enic)
 {
 	unsigned int i;

 	for (i = 0; i < enic->wq_count; i++)
 		vnic_wq_free(&enic->wq[i]);
 	for (i = 0; i < enic->rq_count; i++)
 		vnic_rq_free(&enic->rq[i]);
 	for (i = 0; i < enic->cq_count; i++)
 		vnic_cq_free(&enic->cq[i]);
 	for (i = 0; i < enic->intr_count; i++)
 		vnic_intr_free(&enic->intr[i]);
 }

 void enic_get_res_counts(struct enic *enic)
 {
 	enic->wq_count = min_t(int,
 		vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ),
 		ENIC_WQ_MAX);
 	enic->rq_count = min_t(int,
 		vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ),
 		ENIC_RQ_MAX);
 	enic->cq_count = min_t(int,
 		vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ),
 		ENIC_CQ_MAX);
 	enic->intr_count = min_t(int,
 		vnic_dev_get_res_count(enic->vdev, RES_TYPE_INTR_CTRL),
 		ENIC_INTR_MAX);

 	dev_info(enic_get_dev(enic),
 		"vNIC resources avail: wq %d rq %d cq %d intr %d\n",
 		enic->wq_count, enic->rq_count,
 		enic->cq_count, enic->intr_count);
 }

 void enic_init_vnic_resources(struct enic *enic)
 {
 	enum vnic_dev_intr_mode intr_mode;
 	unsigned int mask_on_assertion;
 	unsigned int interrupt_offset;
 	unsigned int error_interrupt_enable;
 	unsigned int error_interrupt_offset;
 	unsigned int cq_index;
 	unsigned int i;

 	intr_mode = vnic_dev_get_intr_mode(enic->vdev);

 	/* Init RQ/WQ resources.
 	 *
 	 * RQ[0 - n-1] point to CQ[0 - n-1]
 	 * WQ[0 - m-1] point to CQ[n - n+m-1]
 	 *
 	 * Error interrupt is not enabled for MSI.
 	 */

 	switch (intr_mode) {
 	case VNIC_DEV_INTR_MODE_INTX:
 	case VNIC_DEV_INTR_MODE_MSIX:
 		error_interrupt_enable = 1;
 		error_interrupt_offset = enic->intr_count - 2;
 		break;
 	default:
 		error_interrupt_enable = 0;
 		error_interrupt_offset = 0;
 		break;
 	}

 	for (i = 0; i < enic->rq_count; i++) {
 		cq_index = i;
 		vnic_rq_init(&enic->rq[i],
 			cq_index,
 			error_interrupt_enable,
 			error_interrupt_offset);
 	}

 	for (i = 0; i < enic->wq_count; i++) {
 		cq_index = enic->rq_count + i;
 		vnic_wq_init(&enic->wq[i],
 			cq_index,
 			error_interrupt_enable,
 			error_interrupt_offset);
 	}

 	/* Init CQ resources
 	 *
 	 * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI
 	 * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X
 	 */

 	for (i = 0; i < enic->cq_count; i++) {

 		switch (intr_mode) {
 		case VNIC_DEV_INTR_MODE_MSIX:
 			interrupt_offset = i;
 			break;
 		default:
 			interrupt_offset = 0;
 			break;
 		}

 		vnic_cq_init(&enic->cq[i],
 			0 /* flow_control_enable */,
 			1 /* color_enable */,
 			0 /* cq_head */,
 			0 /* cq_tail */,
 			1 /* cq_tail_color */,
 			1 /* interrupt_enable */,
 			1 /* cq_entry_enable */,
 			0 /* cq_message_enable */,
 			interrupt_offset,
 			0 /* cq_message_addr */);
 	}

 	/* Init INTR resources
 	 *
 	 * mask_on_assertion is not used for INTx due to the level-
 	 * triggered nature of INTx
 	 */

 	switch (intr_mode) {
 	case VNIC_DEV_INTR_MODE_MSI:
 	case VNIC_DEV_INTR_MODE_MSIX:
 		mask_on_assertion = 1;
 		break;
 	default:
 		mask_on_assertion = 0;
 		break;
 	}

 	for (i = 0; i < enic->intr_count; i++) {
 		vnic_intr_init(&enic->intr[i],
 			INTR_COALESCE_USEC_TO_HW(enic->config.intr_timer_usec),
 			enic->config.intr_timer_type,
 			mask_on_assertion);
 	}
 }

 int enic_alloc_vnic_resources(struct enic *enic)
 {
 	enum vnic_dev_intr_mode intr_mode;
 	unsigned int i;
 	int err;

 	intr_mode = vnic_dev_get_intr_mode(enic->vdev);

 	dev_info(enic_get_dev(enic), "vNIC resources used:  "
 		"wq %d rq %d cq %d intr %d intr mode %s\n",
 		enic->wq_count, enic->rq_count,
 		enic->cq_count, enic->intr_count,
 		intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
 		intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
 		intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" :
 		"unknown");

 	/* Allocate queue resources
 	 */

 	for (i = 0; i < enic->wq_count; i++) {
 		err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i,
 			enic->config.wq_desc_count,
 			sizeof(struct wq_enet_desc));
 		if (err)
 			goto err_out_cleanup;
 	}

 	for (i = 0; i < enic->rq_count; i++) {
 		err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i,
 			enic->config.rq_desc_count,
 			sizeof(struct rq_enet_desc));
 		if (err)
 			goto err_out_cleanup;
 	}

 	for (i = 0; i < enic->cq_count; i++) {
 		if (i < enic->rq_count)
 			err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
 				enic->config.rq_desc_count,
 				sizeof(struct cq_enet_rq_desc));
 		else
 			err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
 				enic->config.wq_desc_count,
 				sizeof(struct cq_enet_wq_desc));
 		if (err)
 			goto err_out_cleanup;
 	}

 	for (i = 0; i < enic->intr_count; i++) {
 		err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i);
 		if (err)
 			goto err_out_cleanup;
 	}

 	/* Hook remaining resource
 	 */

 	enic->legacy_pba = vnic_dev_get_res(enic->vdev,
 		RES_TYPE_INTR_PBA_LEGACY, 0);
 	if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
 		dev_err(enic_get_dev(enic),
 			"Failed to hook legacy pba resource\n");
 		err = -ENODEV;
 		goto err_out_cleanup;
 	}

 	return 0;

 err_out_cleanup:
 	enic_free_vnic_resources(enic);

 	return err;
 }
	/*
	* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
	* Copyright 2007 Nuova Systems, Inc. All rights reserved.
	*
	* This program is free software; you may redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; version 2 of the License.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	* SOFTWARE.
	*
	*/

	#include <linux/kernel.h>
	#include <linux/errno.h>
	#include <linux/types.h>
	#include <linux/pci.h>
	#include <linux/netdevice.h>

	#include "wq_enet_desc.h"
	#include "rq_enet_desc.h"
	#include "cq_enet_desc.h"
	#include "vnic_resource.h"
	#include "vnic_enet.h"
	#include "vnic_dev.h"
	#include "vnic_wq.h"
	#include "vnic_rq.h"
	#include "vnic_cq.h"
	#include "vnic_intr.h"
	#include "vnic_stats.h"
	#include "vnic_nic.h"
	#include "vnic_rss.h"
	#include "enic_res.h"
	#include "enic.h"

	int enic_get_vnic_config(struct enic *enic)
	{
	struct vnic_enet_config *c = &enic->config;
	int err;

	err = vnic_dev_mac_addr(enic->vdev, enic->mac_addr);
	if (err) {
	dev_err(enic_get_dev(enic),
	"Error getting MAC addr, %d\n", err);
	return err;
	}

	#define GET_CONFIG(m) \
	do { \
	err = vnic_dev_spec(enic->vdev, \
	offsetof(struct vnic_enet_config, m), \
	sizeof(c->m), &c->m); \
	if (err) { \
	dev_err(enic_get_dev(enic), \
	"Error getting %s, %d\n", #m, err); \
	return err; \
	} \
	} while (0)

	GET_CONFIG(flags);
	GET_CONFIG(wq_desc_count);
	GET_CONFIG(rq_desc_count);
	GET_CONFIG(mtu);
	GET_CONFIG(intr_timer_type);
	GET_CONFIG(intr_mode);
	GET_CONFIG(intr_timer_usec);
	GET_CONFIG(loop_tag);

	c->wq_desc_count =
	min_t(u32, ENIC_MAX_WQ_DESCS,
	max_t(u32, ENIC_MIN_WQ_DESCS,
	c->wq_desc_count));
	c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */

	c->rq_desc_count =
	min_t(u32, ENIC_MAX_RQ_DESCS,
	max_t(u32, ENIC_MIN_RQ_DESCS,
	c->rq_desc_count));
	c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */

	if (c->mtu == 0)
	c->mtu = 1500;
	c->mtu = min_t(u16, ENIC_MAX_MTU,
	max_t(u16, ENIC_MIN_MTU,
	c->mtu));

	c->intr_timer_usec = min_t(u32,
	INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
	c->intr_timer_usec);

	dev_info(enic_get_dev(enic), "vNIC MAC addr %pM wq/rq %d/%d\n",
	enic->mac_addr, c->wq_desc_count, c->rq_desc_count);
	dev_info(enic_get_dev(enic), "vNIC mtu %d csum tx/rx %d/%d "
	"tso/lro %d/%d intr timer %d usec\n",
	c->mtu, ENIC_SETTING(enic, TXCSUM),
	ENIC_SETTING(enic, RXCSUM), ENIC_SETTING(enic, TSO),
	ENIC_SETTING(enic, LRO), c->intr_timer_usec);

	return 0;
	}

	int enic_add_vlan(struct enic *enic, u16 vlanid)
	{
	u64 a0 = vlanid, a1 = 0;
	int wait = 1000;
	int err;

	err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
	if (err)
	dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err);

	return err;
	}

	int enic_del_vlan(struct enic *enic, u16 vlanid)
	{
	u64 a0 = vlanid, a1 = 0;
	int wait = 1000;
	int err;

	err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
	if (err)
	dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err);

	return err;
	}

	int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
	u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
	u8 ig_vlan_strip_en)
	{
	u64 a0, a1;
	u32 nic_cfg;
	int wait = 1000;

	vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
	rss_hash_type, rss_hash_bits, rss_base_cpu,
	rss_enable, tso_ipid_split_en, ig_vlan_strip_en);

	a0 = nic_cfg;
	a1 = 0;

	return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
	}

	int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len)
	{
	u64 a0 = (u64)key_pa, a1 = len;
	int wait = 1000;

	return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait);
	}

	int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len)
	{
	u64 a0 = (u64)cpu_pa, a1 = len;
	int wait = 1000;

	return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait);
	}

	void enic_free_vnic_resources(struct enic *enic)
	{
	unsigned int i;

	for (i = 0; i < enic->wq_count; i++)
	vnic_wq_free(&enic->wq[i]);
	for (i = 0; i < enic->rq_count; i++)
	vnic_rq_free(&enic->rq[i]);
	for (i = 0; i < enic->cq_count; i++)
	vnic_cq_free(&enic->cq[i]);
	for (i = 0; i < enic->intr_count; i++)
	vnic_intr_free(&enic->intr[i]);
	}

	void enic_get_res_counts(struct enic *enic)
	{
	enic->wq_count = min_t(int,
	vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ),
	ENIC_WQ_MAX);
	enic->rq_count = min_t(int,
	vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ),
	ENIC_RQ_MAX);
	enic->cq_count = min_t(int,
	vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ),
	ENIC_CQ_MAX);
	enic->intr_count = min_t(int,
	vnic_dev_get_res_count(enic->vdev, RES_TYPE_INTR_CTRL),
	ENIC_INTR_MAX);

	dev_info(enic_get_dev(enic),
	"vNIC resources avail: wq %d rq %d cq %d intr %d\n",
	enic->wq_count, enic->rq_count,
	enic->cq_count, enic->intr_count);
	}

	void enic_init_vnic_resources(struct enic *enic)
	{
	enum vnic_dev_intr_mode intr_mode;
	unsigned int mask_on_assertion;
	unsigned int interrupt_offset;
	unsigned int error_interrupt_enable;
	unsigned int error_interrupt_offset;
	unsigned int cq_index;
	unsigned int i;

	intr_mode = vnic_dev_get_intr_mode(enic->vdev);

	/* Init RQ/WQ resources.
	*
	* RQ[0 - n-1] point to CQ[0 - n-1]
	* WQ[0 - m-1] point to CQ[n - n+m-1]
	*
	* Error interrupt is not enabled for MSI.
	*/

	switch (intr_mode) {
	case VNIC_DEV_INTR_MODE_INTX:
	case VNIC_DEV_INTR_MODE_MSIX:
	error_interrupt_enable = 1;
	error_interrupt_offset = enic->intr_count - 2;
	break;
	default:
	error_interrupt_enable = 0;
	error_interrupt_offset = 0;
	break;
	}

	for (i = 0; i < enic->rq_count; i++) {
	cq_index = i;
	vnic_rq_init(&enic->rq[i],
	cq_index,
	error_interrupt_enable,
	error_interrupt_offset);
	}

	for (i = 0; i < enic->wq_count; i++) {
	cq_index = enic->rq_count + i;
	vnic_wq_init(&enic->wq[i],
	cq_index,
	error_interrupt_enable,
	error_interrupt_offset);
	}

	/* Init CQ resources
	*
	* CQ[0 - n+m-1] point to INTR[0] for INTx, MSI
	* CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X
	*/

	for (i = 0; i < enic->cq_count; i++) {

	switch (intr_mode) {
	case VNIC_DEV_INTR_MODE_MSIX:
	interrupt_offset = i;
	break;
	default:
	interrupt_offset = 0;
	break;
	}

	vnic_cq_init(&enic->cq[i],
	0 /* flow_control_enable */,
	1 /* color_enable */,
	0 /* cq_head */,
	0 /* cq_tail */,
	1 /* cq_tail_color */,
	1 /* interrupt_enable */,
	1 /* cq_entry_enable */,
	0 /* cq_message_enable */,
	interrupt_offset,
	0 /* cq_message_addr */);
	}

	/* Init INTR resources
	*
	* mask_on_assertion is not used for INTx due to the level-
	* triggered nature of INTx
	*/

	switch (intr_mode) {
	case VNIC_DEV_INTR_MODE_MSI:
	case VNIC_DEV_INTR_MODE_MSIX:
	mask_on_assertion = 1;
	break;
	default:
	mask_on_assertion = 0;
	break;
	}

	for (i = 0; i < enic->intr_count; i++) {
	vnic_intr_init(&enic->intr[i],
	INTR_COALESCE_USEC_TO_HW(enic->config.intr_timer_usec),
	enic->config.intr_timer_type,
	mask_on_assertion);
	}
	}

	int enic_alloc_vnic_resources(struct enic *enic)
	{
	enum vnic_dev_intr_mode intr_mode;
	unsigned int i;
	int err;

	intr_mode = vnic_dev_get_intr_mode(enic->vdev);

	dev_info(enic_get_dev(enic), "vNIC resources used: "
	"wq %d rq %d cq %d intr %d intr mode %s\n",
	enic->wq_count, enic->rq_count,
	enic->cq_count, enic->intr_count,
	intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
	intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
	intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" :
	"unknown");

	/* Allocate queue resources
	*/

	for (i = 0; i < enic->wq_count; i++) {
	err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i,
	enic->config.wq_desc_count,
	sizeof(struct wq_enet_desc));
	if (err)
	goto err_out_cleanup;
	}

	for (i = 0; i < enic->rq_count; i++) {
	err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i,
	enic->config.rq_desc_count,
	sizeof(struct rq_enet_desc));
	if (err)
	goto err_out_cleanup;
	}

	for (i = 0; i < enic->cq_count; i++) {
	if (i < enic->rq_count)
	err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
	enic->config.rq_desc_count,
	sizeof(struct cq_enet_rq_desc));
	else
	err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
	enic->config.wq_desc_count,
	sizeof(struct cq_enet_wq_desc));
	if (err)
	goto err_out_cleanup;
	}

	for (i = 0; i < enic->intr_count; i++) {
	err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i);
	if (err)
	goto err_out_cleanup;
	}

	/* Hook remaining resource
	*/

	enic->legacy_pba = vnic_dev_get_res(enic->vdev,
	RES_TYPE_INTR_PBA_LEGACY, 0);
	if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
	dev_err(enic_get_dev(enic),
	"Failed to hook legacy pba resource\n");
	err = -ENODEV;
	goto err_out_cleanup;
	}

	return 0;

	err_out_cleanup:
	enic_free_vnic_resources(enic);

	return err;
	}