[mirror_ubuntu-bionic-kernel.git] / drivers / net / enic / vnic_dev.c

/*
 * Copyright 2008 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/delay.h>
#include <linux/if_ether.h>

#include "vnic_resource.h"
#include "vnic_devcmd.h"
#include "vnic_dev.h"
#include "vnic_stats.h"

struct vnic_res {
	void __iomem *vaddr;
	dma_addr_t bus_addr;
	unsigned int count;
};

#define VNIC_DEV_CAP_INIT	0x0001
#define VNIC_DEV_CAP_PERBI	0x0002

struct vnic_dev {
	void *priv;
	struct pci_dev *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;
	u32 *linkstatus;
	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;
	u32 cap_flags;
};

#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;
}

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 vnic_resource __iomem *r;
	u8 type;

	if (num_bars == 0)
		return -EINVAL;

	if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
		printk(KERN_ERR "vNIC BAR0 res hdr length error\n");
		return -EINVAL;
	}

	rh = bar->vaddr;
	if (!rh) {
		printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n");
		return -EINVAL;
	}

	if (ioread32(&rh->magic) != VNIC_RES_MAGIC ||
	    ioread32(&rh->version) != VNIC_RES_VERSION) {
		printk(KERN_ERR "vNIC BAR0 res magic/version error "
			"exp (%lx/%lx) curr (%x/%x)\n",
			VNIC_RES_MAGIC, VNIC_RES_VERSION,
			ioread32(&rh->magic), ioread32(&rh->version));
		return -EINVAL;
	}

	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) {
				printk(KERN_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;
	}
}

dma_addr_t vnic_dev_get_res_bus_addr(struct vnic_dev *vdev,
	enum vnic_res_type type, unsigned int index)
{
	switch (type) {
	case RES_TYPE_WQ:
	case RES_TYPE_RQ:
	case RES_TYPE_CQ:
	case RES_TYPE_INTR_CTRL:
		return vdev->res[type].bus_addr +
			index * VNIC_RES_STRIDE;
	default:
		return vdev->res[type].bus_addr;
	}
}

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 = ALIGN(desc_count, count_align);

	ring->desc_size = 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_dev_clear_desc_ring(struct vnic_dev_ring *ring)
{
	memset(ring->descs, 0, ring->size);
}

int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
	unsigned int desc_count, unsigned int desc_size)
{
	vnic_dev_desc_ring_size(ring, desc_count, desc_size);

	ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
		ring->size_unaligned,
		&ring->base_addr_unaligned);

	if (!ring->descs_unaligned) {
		printk(KERN_ERR
		  "Failed to allocate ring (size=%d), aborting\n",
			(int)ring->size);
		return -ENOMEM;
	}

	ring->base_addr = 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(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
{
	if (ring->descs) {
		pci_free_consistent(vdev->pdev,
			ring->size_unaligned,
			ring->descs_unaligned,
			ring->base_addr_unaligned);
		ring->descs = NULL;
	}
}

int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
	u64 *a0, u64 *a1, int wait)
{
	struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
	int delay;
	u32 status;
	int err;

	status = ioread32(&devcmd->status);
	if (status & STAT_BUSY) {
		printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd));
		return -EBUSY;
	}

	if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
		writeq(*a0, &devcmd->args[0]);
		writeq(*a1, &devcmd->args[1]);
		wmb();
	}

	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 & STAT_BUSY)) {

			if (status & STAT_ERROR) {
				err = (int)readq(&devcmd->args[0]);
				if (err != ERR_ECMDUNKNOWN ||
				    cmd != CMD_CAPABILITY)
					printk(KERN_ERR "Error %d devcmd %d\n",
						err, _CMD_N(cmd));
				return err;
			}

			if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
				rmb();
				*a0 = readq(&devcmd->args[0]);
				*a1 = readq(&devcmd->args[1]);
			}

			return 0;
		}
	}

	printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd));
	return -ETIMEDOUT;
}

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_fw_info(struct vnic_dev *vdev,
	struct vnic_devcmd_fw_info **fw_info)
{
	u64 a0, a1 = 0;
	int wait = 1000;
	int err = 0;

	if (!vdev->fw_info) {
		vdev->fw_info = pci_alloc_consistent(vdev->pdev,
			sizeof(struct vnic_devcmd_fw_info),
			&vdev->fw_info_pa);
		if (!vdev->fw_info)
			return -ENOMEM;

		a0 = vdev->fw_info_pa;

		/* only get fw_info once and cache it */
		err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait);
	}

	*fw_info = vdev->fw_info;

	return err;
}

int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int 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;

	if (!vdev->stats) {
		vdev->stats = pci_alloc_consistent(vdev->pdev,
			sizeof(struct vnic_stats), &vdev->stats_pa);
		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);
}

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_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_hang_notify(struct vnic_dev *vdev)
{
	u64 a0, a1;
	int wait = 1000;
	return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
}

int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
{
	u64 a0, a1;
	int wait = 1000;
	int err, i;

	for (i = 0; i < ETH_ALEN; i++)
		mac_addr[i] = 0;

	err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
	if (err)
		return err;

	for (i = 0; i < ETH_ALEN; i++)
		mac_addr[i] = ((u8 *)&a0)[i];

	return 0;
}

void 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)
		printk(KERN_ERR "Can't set packet filter\n");
}

void 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)
		printk(KERN_ERR "Can't add addr [%pM], %d\n", addr, err);
}

void 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)
		printk(KERN_ERR "Can't del addr [%pM], %d\n", addr, err);
}

int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
{
	u64 a0, a1;
	int wait = 1000;
	int r;

	if (!vdev->notify) {
		vdev->notify = pci_alloc_consistent(vdev->pdev,
			sizeof(struct vnic_devcmd_notify),
			&vdev->notify_pa);
		if (!vdev->notify)
			return -ENOMEM;
		memset(vdev->notify, 0, sizeof(struct vnic_devcmd_notify));
	}

	a0 = vdev->notify_pa;
	a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
	a1 += sizeof(struct vnic_devcmd_notify);

	r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
	vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
	return r;
}

void vnic_dev_notify_unset(struct vnic_dev *vdev)
{
	u64 a0, a1;
	int wait = 1000;

	a0 = 0;  /* paddr = 0 to unset notify buffer */
	a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
	a1 += sizeof(struct vnic_devcmd_notify);

	vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
	vdev->notify_sz = 0;
}

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;
		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 (vdev->cap_flags & VNIC_DEV_CAP_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_MAC_ADDR, &a0, &a1, wait);
			vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
		}
	}
	return r;
}

int vnic_dev_link_status(struct vnic_dev *vdev)
{
	if (vdev->linkstatus)
		return *vdev->linkstatus;

	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;
}

u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
{
	if (!vnic_dev_notify_ready(vdev))
		return 0;

	return vdev->notify_copy.msglvl;
}

u32 vnic_dev_mtu(struct vnic_dev *vdev)
{
	if (!vnic_dev_notify_ready(vdev))
		return 0;

	return vdev->notify_copy.mtu;
}

u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev)
{
	if (!vnic_dev_notify_ready(vdev))
		return 0;

	return vdev->notify_copy.link_down_cnt;
}

u32 vnic_dev_notify_status(struct vnic_dev *vdev)
{
	if (!vnic_dev_notify_ready(vdev))
		return 0;

	return vdev->notify_copy.status;
}

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;
}

void vnic_dev_unregister(struct vnic_dev *vdev)
{
	if (vdev) {
		if (vdev->notify)
			pci_free_consistent(vdev->pdev,
				sizeof(struct vnic_devcmd_notify),
				vdev->notify,
				vdev->notify_pa);
		if (vdev->linkstatus)
			pci_free_consistent(vdev->pdev,
				sizeof(u32),
				vdev->linkstatus,
				vdev->linkstatus_pa);
		if (vdev->stats)
			pci_free_consistent(vdev->pdev,
				sizeof(struct vnic_dev),
				vdev->stats, vdev->stats_pa);
		if (vdev->fw_info)
			pci_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 pci_dev *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;

	vdev->cap_flags = 0;

	if (vnic_dev_capable(vdev, CMD_INIT))
		vdev->cap_flags |= VNIC_DEV_CAP_INIT;

	return vdev;

err_out:
	vnic_dev_unregister(vdev);
	return NULL;
}
Commit	Line	Data
01f2e4ea SF	1	/*
	2	* Copyright 2008 Cisco Systems, Inc. All rights reserved.
	3	* Copyright 2007 Nuova Systems, Inc. All rights reserved.
	4	*
	5	* This program is free software; you may redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; version 2 of the License.
	8	*
	9	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	10	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	11	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	12	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	13	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	14	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	15	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	16	* SOFTWARE.
	17	*
	18	*/
	19
	20	#include <linux/kernel.h>
	21	#include <linux/errno.h>
	22	#include <linux/types.h>
	23	#include <linux/pci.h>
	24	#include <linux/delay.h>
	25	#include <linux/if_ether.h>
	26
	27	#include "vnic_resource.h"
	28	#include "vnic_devcmd.h"
	29	#include "vnic_dev.h"
	30	#include "vnic_stats.h"
	31
	32	struct vnic_res {
	33	void __iomem *vaddr;
27e6c7d3	34	dma_addr_t bus_addr;
01f2e4ea SF	35	unsigned int count;
	36	};
	37
4cdc44a2 SF	38	#define VNIC_DEV_CAP_INIT 0x0001
	39	#define VNIC_DEV_CAP_PERBI 0x0002
	40
01f2e4ea SF	41	struct vnic_dev {
	42	void *priv;
	43	struct pci_dev *pdev;
	44	struct vnic_res res[RES_TYPE_MAX];
	45	enum vnic_dev_intr_mode intr_mode;
	46	struct vnic_devcmd __iomem *devcmd;
	47	struct vnic_devcmd_notify *notify;
	48	struct vnic_devcmd_notify notify_copy;
	49	dma_addr_t notify_pa;
27372bf5	50	u32 notify_sz;
01f2e4ea SF	51	u32 *linkstatus;
	52	dma_addr_t linkstatus_pa;
	53	struct vnic_stats *stats;
	54	dma_addr_t stats_pa;
	55	struct vnic_devcmd_fw_info *fw_info;
	56	dma_addr_t fw_info_pa;
4cdc44a2	57	u32 cap_flags;
01f2e4ea SF	58	};
	59
	60	#define VNIC_MAX_RES_HDR_SIZE \
	61	(sizeof(struct vnic_resource_header) + \
	62	sizeof(struct vnic_resource) * RES_TYPE_MAX)
	63	#define VNIC_RES_STRIDE 128
	64
	65	void vnic_dev_priv(struct vnic_dev vdev)
	66	{
	67	return vdev->priv;
	68	}
	69
	70	static int vnic_dev_discover_res(struct vnic_dev *vdev,
27e6c7d3	71	struct vnic_dev_bar *bar, unsigned int num_bars)
01f2e4ea SF	72	{
	73	struct vnic_resource_header __iomem *rh;
	74	struct vnic_resource __iomem *r;
	75	u8 type;
	76
27e6c7d3 SF	77	if (num_bars == 0)
	78	return -EINVAL;
	79
01f2e4ea SF	80	if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
	81	printk(KERN_ERR "vNIC BAR0 res hdr length error\n");
	82	return -EINVAL;
	83	}
	84
	85	rh = bar->vaddr;
	86	if (!rh) {
	87	printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n");
	88	return -EINVAL;
	89	}
	90
	91	if (ioread32(&rh->magic) != VNIC_RES_MAGIC \|\|
	92	ioread32(&rh->version) != VNIC_RES_VERSION) {
	93	printk(KERN_ERR "vNIC BAR0 res magic/version error "
	94	"exp (%lx/%lx) curr (%x/%x)\n",
	95	VNIC_RES_MAGIC, VNIC_RES_VERSION,
	96	ioread32(&rh->magic), ioread32(&rh->version));
	97	return -EINVAL;
	98	}
	99
	100	r = (struct vnic_resource __iomem *)(rh + 1);
	101
	102	while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
	103
	104	u8 bar_num = ioread8(&r->bar);
	105	u32 bar_offset = ioread32(&r->bar_offset);
	106	u32 count = ioread32(&r->count);
	107	u32 len;
	108
	109	r++;
	110
27e6c7d3 SF	111	if (bar_num >= num_bars)
	112	continue;
	113
	114	if (!bar[bar_num].len \|\| !bar[bar_num].vaddr)
01f2e4ea SF	115	continue;
	116
	117	switch (type) {
	118	case RES_TYPE_WQ:
	119	case RES_TYPE_RQ:
	120	case RES_TYPE_CQ:
	121	case RES_TYPE_INTR_CTRL:
	122	/* each count is stride bytes long */
	123	len = count * VNIC_RES_STRIDE;
27e6c7d3	124	if (len + bar_offset > bar[bar_num].len) {
01f2e4ea SF	125	printk(KERN_ERR "vNIC BAR0 resource %d "
	126	"out-of-bounds, offset 0x%x + "
	127	"size 0x%x > bar len 0x%lx\n",
	128	type, bar_offset,
	129	len,
27e6c7d3	130	bar[bar_num].len);
01f2e4ea SF	131	return -EINVAL;
	132	}
	133	break;
	134	case RES_TYPE_INTR_PBA_LEGACY:
	135	case RES_TYPE_DEVCMD:
	136	len = count;
	137	break;
	138	default:
	139	continue;
	140	}
	141
	142	vdev->res[type].count = count;
27e6c7d3 SF	143	vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
	144	bar_offset;
	145	vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
01f2e4ea SF	146	}
	147
	148	return 0;
	149	}
	150
	151	unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
	152	enum vnic_res_type type)
	153	{
	154	return vdev->res[type].count;
	155	}
	156
	157	void __iomem vnic_dev_get_res(struct vnic_dev vdev, enum vnic_res_type type,
	158	unsigned int index)
	159	{
	160	if (!vdev->res[type].vaddr)
	161	return NULL;
	162
	163	switch (type) {
	164	case RES_TYPE_WQ:
	165	case RES_TYPE_RQ:
	166	case RES_TYPE_CQ:
	167	case RES_TYPE_INTR_CTRL:
	168	return (char __iomem *)vdev->res[type].vaddr +
	169	index * VNIC_RES_STRIDE;
	170	default:
	171	return (char __iomem *)vdev->res[type].vaddr;
	172	}
	173	}
	174
27e6c7d3 SF	175	dma_addr_t vnic_dev_get_res_bus_addr(struct vnic_dev *vdev,
	176	enum vnic_res_type type, unsigned int index)
	177	{
	178	switch (type) {
	179	case RES_TYPE_WQ:
	180	case RES_TYPE_RQ:
	181	case RES_TYPE_CQ:
	182	case RES_TYPE_INTR_CTRL:
	183	return vdev->res[type].bus_addr +
	184	index * VNIC_RES_STRIDE;
	185	default:
	186	return vdev->res[type].bus_addr;
	187	}
	188	}
	189
01f2e4ea SF	190	unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
	191	unsigned int desc_count, unsigned int desc_size)
	192	{
	193	/* The base address of the desc rings must be 512 byte aligned.
	194	* Descriptor count is aligned to groups of 32 descriptors. A
	195	* count of 0 means the maximum 4096 descriptors. Descriptor
	196	* size is aligned to 16 bytes.
	197	*/
	198
	199	unsigned int count_align = 32;
	200	unsigned int desc_align = 16;
	201
	202	ring->base_align = 512;
	203
	204	if (desc_count == 0)
	205	desc_count = 4096;
	206
	207	ring->desc_count = ALIGN(desc_count, count_align);
	208
	209	ring->desc_size = ALIGN(desc_size, desc_align);
	210
	211	ring->size = ring->desc_count * ring->desc_size;
	212	ring->size_unaligned = ring->size + ring->base_align;
	213
	214	return ring->size_unaligned;
	215	}
	216
	217	void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
	218	{
	219	memset(ring->descs, 0, ring->size);
	220	}
	221
	222	int vnic_dev_alloc_desc_ring(struct vnic_dev vdev, struct vnic_dev_ring ring,
	223	unsigned int desc_count, unsigned int desc_size)
	224	{
	225	vnic_dev_desc_ring_size(ring, desc_count, desc_size);
	226
	227	ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
	228	ring->size_unaligned,
	229	&ring->base_addr_unaligned);
	230
	231	if (!ring->descs_unaligned) {
	232	printk(KERN_ERR
	233	"Failed to allocate ring (size=%d), aborting\n",
	234	(int)ring->size);
	235	return -ENOMEM;
	236	}
	237
	238	ring->base_addr = ALIGN(ring->base_addr_unaligned,
	239	ring->base_align);
	240	ring->descs = (u8 *)ring->descs_unaligned +
	241	(ring->base_addr - ring->base_addr_unaligned);
	242
	243	vnic_dev_clear_desc_ring(ring);
	244
	245	ring->desc_avail = ring->desc_count - 1;
	246
	247	return 0;
	248	}
	249
	250	void vnic_dev_free_desc_ring(struct vnic_dev vdev, struct vnic_dev_ring ring)
	251	{
	252	if (ring->descs) {
	253	pci_free_consistent(vdev->pdev,
254	ring->size_unaligned,
255	ring->descs_unaligned,
256	ring->base_addr_unaligned);
257	ring->descs = NULL;
258	}
259	}
260
261	int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
262	u64 a0, u64 a1, int wait)
263	{
264	struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
265	int delay;
266	u32 status;
01f2e4ea SF	267	int err;
	268
	269	status = ioread32(&devcmd->status);
	270	if (status & STAT_BUSY) {
	271	printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd));
	272	return -EBUSY;
	273	}
	274
	275	if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
	276	writeq(*a0, &devcmd->args[0]);
	277	writeq(*a1, &devcmd->args[1]);
	278	wmb();
	279	}
	280
	281	iowrite32(cmd, &devcmd->cmd);
	282
	283	if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
27e6c7d3	284	return 0;
01f2e4ea SF	285
	286	for (delay = 0; delay < wait; delay++) {
	287
	288	udelay(100);
	289
	290	status = ioread32(&devcmd->status);
	291	if (!(status & STAT_BUSY)) {
	292
	293	if (status & STAT_ERROR) {
27372bf5 SF	294	err = (int)readq(&devcmd->args[0]);
	295	if (err != ERR_ECMDUNKNOWN \|\|
	296	cmd != CMD_CAPABILITY)
	297	printk(KERN_ERR "Error %d devcmd %d\n",
	298	err, _CMD_N(cmd));
	299	return err;
01f2e4ea SF	300	}
	301
	302	if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
	303	rmb();
	304	*a0 = readq(&devcmd->args[0]);
	305	*a1 = readq(&devcmd->args[1]);
	306	}
	307
	308	return 0;
	309	}
	310	}
	311
	312	printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd));
	313	return -ETIMEDOUT;
	314	}
	315
5e4232ee	316	static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
27372bf5 SF	317	{
	318	u64 a0 = (u32)cmd, a1 = 0;
	319	int wait = 1000;
	320	int err;
	321
	322	err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
	323
	324	return !(err \|\| a0);
	325	}
	326
01f2e4ea SF	327	int vnic_dev_fw_info(struct vnic_dev *vdev,
	328	struct vnic_devcmd_fw_info **fw_info)
	329	{
	330	u64 a0, a1 = 0;
	331	int wait = 1000;
	332	int err = 0;
	333
	334	if (!vdev->fw_info) {
	335	vdev->fw_info = pci_alloc_consistent(vdev->pdev,
	336	sizeof(struct vnic_devcmd_fw_info),
	337	&vdev->fw_info_pa);
	338	if (!vdev->fw_info)
	339	return -ENOMEM;
	340
	341	a0 = vdev->fw_info_pa;
	342
	343	/* only get fw_info once and cache it */
	344	err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait);
	345	}
	346
	347	*fw_info = vdev->fw_info;
	348
	349	return err;
	350	}
	351
	352	int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
	353	void *value)
	354	{
	355	u64 a0, a1;
	356	int wait = 1000;
	357	int err;
	358
	359	a0 = offset;
	360	a1 = size;
	361
	362	err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
	363
	364	switch (size) {
	365	case 1: (u8 )value = (u8)a0; break;
	366	case 2: (u16 )value = (u16)a0; break;
	367	case 4: (u32 )value = (u32)a0; break;
	368	case 8: (u64 )value = a0; break;
	369	default: BUG(); break;
	370	}
	371
	372	return err;
	373	}
	374
	375	int vnic_dev_stats_clear(struct vnic_dev *vdev)
	376	{
	377	u64 a0 = 0, a1 = 0;
	378	int wait = 1000;
	379	return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
	380	}
	381
	382	int vnic_dev_stats_dump(struct vnic_dev vdev, struct vnic_stats *stats)
	383	{
	384	u64 a0, a1;
	385	int wait = 1000;
	386
	387	if (!vdev->stats) {
	388	vdev->stats = pci_alloc_consistent(vdev->pdev,
	389	sizeof(struct vnic_stats), &vdev->stats_pa);
	390	if (!vdev->stats)
391	return -ENOMEM;
392	}
393
394	*stats = vdev->stats;
395	a0 = vdev->stats_pa;
396	a1 = sizeof(struct vnic_stats);
397
398	return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
399	}
400
401	int vnic_dev_close(struct vnic_dev *vdev)
402	{
403	u64 a0 = 0, a1 = 0;
404	int wait = 1000;
405	return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
406	}
407
408	int vnic_dev_enable(struct vnic_dev *vdev)
409	{
410	u64 a0 = 0, a1 = 0;
411	int wait = 1000;
412	return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
413	}
414
415	int vnic_dev_disable(struct vnic_dev *vdev)
416	{
417	u64 a0 = 0, a1 = 0;
418	int wait = 1000;
419	return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
420	}
421
422	int vnic_dev_open(struct vnic_dev *vdev, int arg)
423	{
424	u64 a0 = (u32)arg, a1 = 0;
425	int wait = 1000;
426	return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
427	}
428
429	int vnic_dev_open_done(struct vnic_dev vdev, int done)
430	{
431	u64 a0 = 0, a1 = 0;
432	int wait = 1000;
433	int err;
434
435	*done = 0;
436
437	err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
438	if (err)
439	return err;
440
441	*done = (a0 == 0);
442
443	return 0;
444	}
445
446	int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
447	{
448	u64 a0 = (u32)arg, a1 = 0;
449	int wait = 1000;
450	return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
451	}
452
453	int vnic_dev_soft_reset_done(struct vnic_dev vdev, int done)
454	{
455	u64 a0 = 0, a1 = 0;
456	int wait = 1000;
457	int err;
458
459	*done = 0;
460
461	err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
462	if (err)
463	return err;
464
465	*done = (a0 == 0);
466
467	return 0;
468	}
469
470	int vnic_dev_hang_notify(struct vnic_dev *vdev)
471	{
472	u64 a0, a1;
473	int wait = 1000;
474	return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
475	}
476
477	int vnic_dev_mac_addr(struct vnic_dev vdev, u8 mac_addr)
478	{
479	u64 a0, a1;
480	int wait = 1000;
481	int err, i;
482
483	for (i = 0; i < ETH_ALEN; i++)
484	mac_addr[i] = 0;
485
486	err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
487	if (err)
488	return err;
489
490	for (i = 0; i < ETH_ALEN; i++)
491	mac_addr[i] = ((u8 *)&a0)[i];
492
493	return 0;
494	}
495
496	void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
497	int broadcast, int promisc, int allmulti)
498	{
499	u64 a0, a1 = 0;
500	int wait = 1000;
501	int err;
502
503	a0 = (directed ? CMD_PFILTER_DIRECTED : 0) \|
504	(multicast ? CMD_PFILTER_MULTICAST : 0) \|
505	(broadcast ? CMD_PFILTER_BROADCAST : 0) \|
506	(promisc ? CMD_PFILTER_PROMISCUOUS : 0) \|
507	(allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
508
509	err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
510	if (err)
511	printk(KERN_ERR "Can't set packet filter\n");
512	}
513
514	void vnic_dev_add_addr(struct vnic_dev vdev, u8 addr)
515	{
516	u64 a0 = 0, a1 = 0;
517	int wait = 1000;
518	int err;
519	int i;
520
521	for (i = 0; i < ETH_ALEN; i++)
522	((u8 *)&a0)[i] = addr[i];
523
524	err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
525	if (err)
7c510e4b	526	printk(KERN_ERR "Can't add addr [%pM], %d\n", addr, err);
01f2e4ea SF	527	}
	528
	529	void vnic_dev_del_addr(struct vnic_dev vdev, u8 addr)
	530	{
	531	u64 a0 = 0, a1 = 0;
	532	int wait = 1000;
	533	int err;
	534	int i;
	535
	536	for (i = 0; i < ETH_ALEN; i++)
	537	((u8 *)&a0)[i] = addr[i];
	538
	539	err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
	540	if (err)
7c510e4b	541	printk(KERN_ERR "Can't del addr [%pM], %d\n", addr, err);
01f2e4ea SF	542	}
	543
	544	int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
	545	{
	546	u64 a0, a1;
	547	int wait = 1000;
27372bf5	548	int r;
01f2e4ea SF	549
	550	if (!vdev->notify) {
	551	vdev->notify = pci_alloc_consistent(vdev->pdev,
	552	sizeof(struct vnic_devcmd_notify),
	553	&vdev->notify_pa);
	554	if (!vdev->notify)
	555	return -ENOMEM;
27372bf5	556	memset(vdev->notify, 0, sizeof(struct vnic_devcmd_notify));
01f2e4ea SF	557	}
	558
	559	a0 = vdev->notify_pa;
	560	a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
	561	a1 += sizeof(struct vnic_devcmd_notify);
	562
27372bf5 SF	563	r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
	564	vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
	565	return r;
01f2e4ea SF	566	}
	567
	568	void vnic_dev_notify_unset(struct vnic_dev *vdev)
	569	{
	570	u64 a0, a1;
	571	int wait = 1000;
	572
	573	a0 = 0; /* paddr = 0 to unset notify buffer */
	574	a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
	575	a1 += sizeof(struct vnic_devcmd_notify);
	576
	577	vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
27372bf5	578	vdev->notify_sz = 0;
01f2e4ea SF	579	}
	580
	581	static int vnic_dev_notify_ready(struct vnic_dev *vdev)
	582	{
	583	u32 *words;
27372bf5	584	unsigned int nwords = vdev->notify_sz / 4;
01f2e4ea SF	585	unsigned int i;
	586	u32 csum;
	587
27372bf5	588	if (!vdev->notify \|\| !vdev->notify_sz)
01f2e4ea SF	589	return 0;
	590
	591	do {
	592	csum = 0;
27372bf5	593	memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
01f2e4ea SF	594	words = (u32 *)&vdev->notify_copy;
	595	for (i = 1; i < nwords; i++)
	596	csum += words[i];
	597	} while (csum != words[0]);
	598
	599	return 1;
	600	}
	601
	602	int vnic_dev_init(struct vnic_dev *vdev, int arg)
	603	{
	604	u64 a0 = (u32)arg, a1 = 0;
	605	int wait = 1000;
4cdc44a2	606	int r = 0;
27372bf5	607
4cdc44a2	608	if (vdev->cap_flags & VNIC_DEV_CAP_INIT)
27372bf5 SF	609	r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
	610	else {
	611	vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
	612	if (a0 & CMD_INITF_DEFAULT_MAC) {
	613	// Emulate these for old CMD_INIT_v1 which
	614	// didn't pass a0 so no CMD_INITF_*.
	615	vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
	616	vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
	617	}
4cdc44a2 SF	618	}
4cdc44a2 SF	619	return r;
01f2e4ea SF	620	}
	621
	622	int vnic_dev_link_status(struct vnic_dev *vdev)
	623	{
	624	if (vdev->linkstatus)
	625	return *vdev->linkstatus;
	626
	627	if (!vnic_dev_notify_ready(vdev))
	628	return 0;
	629
	630	return vdev->notify_copy.link_state;
	631	}
	632
	633	u32 vnic_dev_port_speed(struct vnic_dev *vdev)
	634	{
	635	if (!vnic_dev_notify_ready(vdev))
	636	return 0;
	637
	638	return vdev->notify_copy.port_speed;
	639	}
	640
	641	u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
	642	{
	643	if (!vnic_dev_notify_ready(vdev))
	644	return 0;
	645
	646	return vdev->notify_copy.msglvl;
	647	}
	648
	649	u32 vnic_dev_mtu(struct vnic_dev *vdev)
	650	{
	651	if (!vnic_dev_notify_ready(vdev))
	652	return 0;
	653
	654	return vdev->notify_copy.mtu;
	655	}
	656
4cdc44a2 SF	657	u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev)
	658	{
	659	if (!vnic_dev_notify_ready(vdev))
	660	return 0;
	661
	662	return vdev->notify_copy.link_down_cnt;
	663	}
	664
	665	u32 vnic_dev_notify_status(struct vnic_dev *vdev)
	666	{
	667	if (!vnic_dev_notify_ready(vdev))
	668	return 0;
	669
	670	return vdev->notify_copy.status;
	671	}
	672
01f2e4ea SF	673	void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
	674	enum vnic_dev_intr_mode intr_mode)
	675	{
	676	vdev->intr_mode = intr_mode;
	677	}
	678
	679	enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
	680	struct vnic_dev *vdev)
	681	{
	682	return vdev->intr_mode;
	683	}
	684
	685	void vnic_dev_unregister(struct vnic_dev *vdev)
	686	{
	687	if (vdev) {
	688	if (vdev->notify)
	689	pci_free_consistent(vdev->pdev,
	690	sizeof(struct vnic_devcmd_notify),
	691	vdev->notify,
	692	vdev->notify_pa);
	693	if (vdev->linkstatus)
	694	pci_free_consistent(vdev->pdev,
	695	sizeof(u32),
	696	vdev->linkstatus,
	697	vdev->linkstatus_pa);
	698	if (vdev->stats)
	699	pci_free_consistent(vdev->pdev,
	700	sizeof(struct vnic_dev),
	701	vdev->stats, vdev->stats_pa);
	702	if (vdev->fw_info)
	703	pci_free_consistent(vdev->pdev,
	704	sizeof(struct vnic_devcmd_fw_info),
	705	vdev->fw_info, vdev->fw_info_pa);
	706	kfree(vdev);
	707	}
	708	}
	709
	710	struct vnic_dev vnic_dev_register(struct vnic_dev vdev,
27e6c7d3 SF	711	void priv, struct pci_dev pdev, struct vnic_dev_bar *bar,
27e6c7d3 SF	712	unsigned int num_bars)
01f2e4ea SF	713	{
	714	if (!vdev) {
	715	vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
	716	if (!vdev)
	717	return NULL;
	718	}
	719
	720	vdev->priv = priv;
	721	vdev->pdev = pdev;
	722
27e6c7d3	723	if (vnic_dev_discover_res(vdev, bar, num_bars))
01f2e4ea SF	724	goto err_out;
	725
	726	vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
	727	if (!vdev->devcmd)
	728	goto err_out;
	729
4cdc44a2 SF	730	vdev->cap_flags = 0;
	731
	732	if (vnic_dev_capable(vdev, CMD_INIT))
	733	vdev->cap_flags \|= VNIC_DEV_CAP_INIT;
	734
01f2e4ea SF	735	return vdev;
	736
	737	err_out:
	738	vnic_dev_unregister(vdev);
	739	return NULL;
	740	}
	741
27372bf5	742