319 lines
8.1 KiB
C
319 lines
8.1 KiB
C
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef _ENIC_H_
|
|
#define _ENIC_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 <linux/irq.h>
|
|
|
|
#define DRV_NAME "enic"
|
|
#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
|
|
#define DRV_VERSION "2.3.0.20"
|
|
#define DRV_COPYRIGHT "Copyright 2008-2013 Cisco Systems, Inc"
|
|
|
|
#define ENIC_BARS_MAX 6
|
|
|
|
#define ENIC_WQ_MAX 8
|
|
#define ENIC_RQ_MAX 8
|
|
#define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX)
|
|
#define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
|
|
|
|
#define ENIC_AIC_LARGE_PKT_DIFF 3
|
|
|
|
struct enic_msix_entry {
|
|
int requested;
|
|
char devname[IFNAMSIZ];
|
|
irqreturn_t (*isr)(int, void *);
|
|
void *devid;
|
|
cpumask_var_t affinity_mask;
|
|
};
|
|
|
|
/* Store only the lower range. Higher range is given by fw. */
|
|
struct enic_intr_mod_range {
|
|
u32 small_pkt_range_start;
|
|
u32 large_pkt_range_start;
|
|
};
|
|
|
|
struct enic_intr_mod_table {
|
|
u32 rx_rate;
|
|
u32 range_percent;
|
|
};
|
|
|
|
#define ENIC_MAX_LINK_SPEEDS 3
|
|
#define ENIC_LINK_SPEED_10G 10000
|
|
#define ENIC_LINK_SPEED_4G 4000
|
|
#define ENIC_LINK_40G_INDEX 2
|
|
#define ENIC_LINK_10G_INDEX 1
|
|
#define ENIC_LINK_4G_INDEX 0
|
|
#define ENIC_RX_COALESCE_RANGE_END 125
|
|
#define ENIC_AIC_TS_BREAK 100
|
|
|
|
struct enic_rx_coal {
|
|
u32 small_pkt_range_start;
|
|
u32 large_pkt_range_start;
|
|
u32 range_end;
|
|
u32 use_adaptive_rx_coalesce;
|
|
};
|
|
|
|
/* priv_flags */
|
|
#define ENIC_SRIOV_ENABLED (1 << 0)
|
|
|
|
/* enic port profile set flags */
|
|
#define ENIC_PORT_REQUEST_APPLIED (1 << 0)
|
|
#define ENIC_SET_REQUEST (1 << 1)
|
|
#define ENIC_SET_NAME (1 << 2)
|
|
#define ENIC_SET_INSTANCE (1 << 3)
|
|
#define ENIC_SET_HOST (1 << 4)
|
|
|
|
struct enic_port_profile {
|
|
u32 set;
|
|
u8 request;
|
|
char name[PORT_PROFILE_MAX];
|
|
u8 instance_uuid[PORT_UUID_MAX];
|
|
u8 host_uuid[PORT_UUID_MAX];
|
|
u8 vf_mac[ETH_ALEN];
|
|
u8 mac_addr[ETH_ALEN];
|
|
};
|
|
|
|
/* enic_rfs_fltr_node - rfs filter node in hash table
|
|
* @@keys: IPv4 5 tuple
|
|
* @flow_id: flow_id of clsf filter provided by kernel
|
|
* @fltr_id: filter id of clsf filter returned by adaptor
|
|
* @rq_id: desired rq index
|
|
* @node: hlist_node
|
|
*/
|
|
struct enic_rfs_fltr_node {
|
|
struct flow_keys keys;
|
|
u32 flow_id;
|
|
u16 fltr_id;
|
|
u16 rq_id;
|
|
struct hlist_node node;
|
|
};
|
|
|
|
/* enic_rfs_flw_tbl - rfs flow table
|
|
* @max: Maximum number of filters vNIC supports
|
|
* @free: Number of free filters available
|
|
* @toclean: hash table index to clean next
|
|
* @ht_head: hash table list head
|
|
* @lock: spin lock
|
|
* @rfs_may_expire: timer function for enic_rps_may_expire_flow
|
|
*/
|
|
struct enic_rfs_flw_tbl {
|
|
u16 max;
|
|
int free;
|
|
|
|
#define ENIC_RFS_FLW_BITSHIFT (10)
|
|
#define ENIC_RFS_FLW_MASK ((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
|
|
u16 toclean:ENIC_RFS_FLW_BITSHIFT;
|
|
struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
|
|
spinlock_t lock;
|
|
struct timer_list rfs_may_expire;
|
|
};
|
|
|
|
/* Per-instance private data structure */
|
|
struct enic {
|
|
struct net_device *netdev;
|
|
struct pci_dev *pdev;
|
|
struct vnic_enet_config config;
|
|
struct vnic_dev_bar bar[ENIC_BARS_MAX];
|
|
struct vnic_dev *vdev;
|
|
struct timer_list notify_timer;
|
|
struct work_struct reset;
|
|
struct work_struct tx_hang_reset;
|
|
struct work_struct change_mtu_work;
|
|
struct msix_entry msix_entry[ENIC_INTR_MAX];
|
|
struct enic_msix_entry msix[ENIC_INTR_MAX];
|
|
u32 msg_enable;
|
|
spinlock_t devcmd_lock;
|
|
u8 mac_addr[ETH_ALEN];
|
|
unsigned int flags;
|
|
unsigned int priv_flags;
|
|
unsigned int mc_count;
|
|
unsigned int uc_count;
|
|
u32 port_mtu;
|
|
struct enic_rx_coal rx_coalesce_setting;
|
|
u32 rx_coalesce_usecs;
|
|
u32 tx_coalesce_usecs;
|
|
#ifdef CONFIG_PCI_IOV
|
|
u16 num_vfs;
|
|
#endif
|
|
spinlock_t enic_api_lock;
|
|
bool enic_api_busy;
|
|
struct enic_port_profile *pp;
|
|
|
|
/* work queue cache line section */
|
|
____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
|
|
spinlock_t wq_lock[ENIC_WQ_MAX];
|
|
unsigned int wq_count;
|
|
u16 loop_enable;
|
|
u16 loop_tag;
|
|
|
|
/* receive queue cache line section */
|
|
____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
|
|
unsigned int rq_count;
|
|
u64 rq_truncated_pkts;
|
|
u64 rq_bad_fcs;
|
|
struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];
|
|
|
|
/* interrupt resource cache line section */
|
|
____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
|
|
unsigned int intr_count;
|
|
u32 __iomem *legacy_pba; /* memory-mapped */
|
|
|
|
/* completion queue cache line section */
|
|
____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
|
|
unsigned int cq_count;
|
|
struct enic_rfs_flw_tbl rfs_h;
|
|
u32 rx_copybreak;
|
|
u8 rss_key[ENIC_RSS_LEN];
|
|
struct vnic_gen_stats gen_stats;
|
|
};
|
|
|
|
static inline struct net_device *vnic_get_netdev(struct vnic_dev *vdev)
|
|
{
|
|
struct enic *enic = vdev->priv;
|
|
|
|
return enic->netdev;
|
|
}
|
|
|
|
/* wrappers function for kernel log
|
|
*/
|
|
#define vdev_err(vdev, fmt, ...) \
|
|
dev_err(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
|
|
#define vdev_warn(vdev, fmt, ...) \
|
|
dev_warn(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
|
|
#define vdev_info(vdev, fmt, ...) \
|
|
dev_info(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
|
|
|
|
#define vdev_neterr(vdev, fmt, ...) \
|
|
netdev_err(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
|
|
#define vdev_netwarn(vdev, fmt, ...) \
|
|
netdev_warn(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
|
|
#define vdev_netinfo(vdev, fmt, ...) \
|
|
netdev_info(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
|
|
|
|
static inline struct device *enic_get_dev(struct enic *enic)
|
|
{
|
|
return &(enic->pdev->dev);
|
|
}
|
|
|
|
static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
|
|
{
|
|
return rq;
|
|
}
|
|
|
|
static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
|
|
{
|
|
return enic->rq_count + wq;
|
|
}
|
|
|
|
static inline unsigned int enic_legacy_io_intr(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned int enic_legacy_err_intr(void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline unsigned int enic_legacy_notify_intr(void)
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
static inline unsigned int enic_msix_rq_intr(struct enic *enic,
|
|
unsigned int rq)
|
|
{
|
|
return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
|
|
}
|
|
|
|
static inline unsigned int enic_msix_wq_intr(struct enic *enic,
|
|
unsigned int wq)
|
|
{
|
|
return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
|
|
}
|
|
|
|
static inline unsigned int enic_msix_err_intr(struct enic *enic)
|
|
{
|
|
return enic->rq_count + enic->wq_count;
|
|
}
|
|
|
|
static inline unsigned int enic_msix_notify_intr(struct enic *enic)
|
|
{
|
|
return enic->rq_count + enic->wq_count + 1;
|
|
}
|
|
|
|
static inline bool enic_is_err_intr(struct enic *enic, int intr)
|
|
{
|
|
switch (vnic_dev_get_intr_mode(enic->vdev)) {
|
|
case VNIC_DEV_INTR_MODE_INTX:
|
|
return intr == enic_legacy_err_intr();
|
|
case VNIC_DEV_INTR_MODE_MSIX:
|
|
return intr == enic_msix_err_intr(enic);
|
|
case VNIC_DEV_INTR_MODE_MSI:
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static inline bool enic_is_notify_intr(struct enic *enic, int intr)
|
|
{
|
|
switch (vnic_dev_get_intr_mode(enic->vdev)) {
|
|
case VNIC_DEV_INTR_MODE_INTX:
|
|
return intr == enic_legacy_notify_intr();
|
|
case VNIC_DEV_INTR_MODE_MSIX:
|
|
return intr == enic_msix_notify_intr(enic);
|
|
case VNIC_DEV_INTR_MODE_MSI:
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr)
|
|
{
|
|
if (unlikely(pci_dma_mapping_error(enic->pdev, dma_addr))) {
|
|
net_warn_ratelimited("%s: PCI dma mapping failed!\n",
|
|
enic->netdev->name);
|
|
enic->gen_stats.dma_map_error++;
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void enic_reset_addr_lists(struct enic *enic);
|
|
int enic_sriov_enabled(struct enic *enic);
|
|
int enic_is_valid_vf(struct enic *enic, int vf);
|
|
int enic_is_dynamic(struct enic *enic);
|
|
void enic_set_ethtool_ops(struct net_device *netdev);
|
|
int __enic_set_rsskey(struct enic *enic);
|
|
|
|
#endif /* _ENIC_H_ */
|