diff options
Diffstat (limited to 'drivers/net/ethernet/cisco/enic/enic.h')
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/enic.h | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h new file mode 100644 index 000000000..08cac1bfa --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic.h @@ -0,0 +1,327 @@ +/* + * 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 "2.3.0.53" +#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_WQ_NAPI_BUDGET 256 + +#define ENIC_AIC_LARGE_PKT_DIFF 3 + +struct enic_msix_entry { + int requested; + char devname[IFNAMSIZ + 8]; + 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; +}; + +struct vxlan_offload { + u16 vxlan_udp_port_number; + u8 patch_level; + u8 flags; +}; + +/* 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; + struct vxlan_offload vxlan; + 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_ */ |