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linux/drivers/net/enic/enic_dev.c
Vasanthy Kolluri ea7ea65a3b enic: Add support to configure hardware interrupt coalesce timers in a platform independent way
enic driver and the underlying hardware use different units for representing the interrupt coalesce timer.
Driver converts the interrupt coalesce timer in usec to hardware cycles while setting the relevant hardware
registers. The conversion factor can be different for each of the adapter hardware types. So it is dynamically
learnt from the adapter firmware using the devcmd CMD_INTR_COAL_CONVERT. This allows the driver to configure
the hardware interrupt coalesce timers in a platform independent way.

Signed-off-by: Danny Guo <dannguo@cisco.com>
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
Signed-off-by: David Wang <dwang2@cisco.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-30 20:43:38 -07:00

287 lines
5.7 KiB
C

/*
* Copyright 2011 Cisco 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/pci.h>
#include <linux/etherdevice.h>
#include "vnic_dev.h"
#include "vnic_vic.h"
#include "enic_res.h"
#include "enic.h"
#include "enic_dev.h"
int enic_dev_fw_info(struct enic *enic, struct vnic_devcmd_fw_info **fw_info)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_fw_info(enic->vdev, fw_info);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_stats_dump(enic->vdev, vstats);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_add_station_addr(struct enic *enic)
{
int err;
if (!is_valid_ether_addr(enic->netdev->dev_addr))
return -EADDRNOTAVAIL;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_add_addr(enic->vdev, enic->netdev->dev_addr);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_del_station_addr(struct enic *enic)
{
int err;
if (!is_valid_ether_addr(enic->netdev->dev_addr))
return -EADDRNOTAVAIL;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_del_addr(enic->vdev, enic->netdev->dev_addr);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_packet_filter(struct enic *enic, int directed, int multicast,
int broadcast, int promisc, int allmulti)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_packet_filter(enic->vdev, directed,
multicast, broadcast, promisc, allmulti);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_add_addr(struct enic *enic, u8 *addr)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_add_addr(enic->vdev, addr);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_del_addr(struct enic *enic, u8 *addr)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_del_addr(enic->vdev, addr);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_notify_unset(struct enic *enic)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_notify_unset(enic->vdev);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_hang_notify(struct enic *enic)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_hang_notify(enic->vdev);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_enable(struct enic *enic)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_enable_wait(enic->vdev);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_disable(struct enic *enic)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_disable(enic->vdev);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_intr_coal_timer_info(struct enic *enic)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_intr_coal_timer_info(enic->vdev);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_vnic_dev_deinit(struct enic *enic)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_deinit(enic->vdev);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_init_prov2(enic->vdev,
(u8 *)vp, vic_provinfo_size(vp));
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_deinit_done(struct enic *enic, int *status)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_deinit_done(enic->vdev, status);
spin_unlock(&enic->devcmd_lock);
return err;
}
/* rtnl lock is held */
void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
{
struct enic *enic = netdev_priv(netdev);
spin_lock(&enic->devcmd_lock);
enic_add_vlan(enic, vid);
spin_unlock(&enic->devcmd_lock);
}
/* rtnl lock is held */
void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
{
struct enic *enic = netdev_priv(netdev);
spin_lock(&enic->devcmd_lock);
enic_del_vlan(enic, vid);
spin_unlock(&enic->devcmd_lock);
}
int enic_dev_enable2(struct enic *enic, int active)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_enable2(enic->vdev, active);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_enable2_done(struct enic *enic, int *status)
{
int err;
spin_lock(&enic->devcmd_lock);
err = vnic_dev_enable2_done(enic->vdev, status);
spin_unlock(&enic->devcmd_lock);
return err;
}
int enic_dev_status_to_errno(int devcmd_status)
{
switch (devcmd_status) {
case ERR_SUCCESS:
return 0;
case ERR_EINVAL:
return -EINVAL;
case ERR_EFAULT:
return -EFAULT;
case ERR_EPERM:
return -EPERM;
case ERR_EBUSY:
return -EBUSY;
case ERR_ECMDUNKNOWN:
case ERR_ENOTSUPPORTED:
return -EOPNOTSUPP;
case ERR_EBADSTATE:
return -EINVAL;
case ERR_ENOMEM:
return -ENOMEM;
case ERR_ETIMEDOUT:
return -ETIMEDOUT;
case ERR_ELINKDOWN:
return -ENETDOWN;
case ERR_EINPROGRESS:
return -EINPROGRESS;
case ERR_EMAXRES:
default:
return (devcmd_status < 0) ? devcmd_status : -1;
}
}