/* $NetBSD: ixgbe.h,v 1.100 2025/02/26 04:49:46 andvar Exp $ */

/******************************************************************************
  SPDX-License-Identifier: BSD-3-Clause

  Copyright (c) 2001-2017, Intel Corporation
  All rights reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

   3. Neither the name of the Intel Corporation nor the names of its
      contributors may be used to endorse or promote products derived from
      this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  POSSIBILITY OF SUCH DAMAGE.

******************************************************************************/
/*$FreeBSD: head/sys/dev/ixgbe/ixgbe.h 327031 2017-12-20 18:15:06Z erj $*/

/*
 * Copyright (c) 2011 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Coyote Point Systems, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */


#ifndef _IXGBE_H_
#define _IXGBE_H_


#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/systm.h>
#include <sys/pcq.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/sockio.h>
#include <sys/percpu.h>

#include <net/if.h>
#include <net/if_arp.h>
#include <net/bpf.h>
#include <net/if_ether.h>
#include <net/if_dl.h>
#include <net/if_media.h>

#include <net/if_types.h>
#include <net/if_vlanvar.h>

#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>

#include <sys/bus.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/endian.h>
#include <sys/workqueue.h>
#include <sys/cpu.h>
#include <sys/interrupt.h>
#include <sys/bitops.h>

#include "ixgbe_netbsd.h"
#include "ixgbe_api.h"
#include "ixgbe_common.h"
#include "ixgbe_vf.h"
#include "ixgbe_features.h"

/* Tunables */

/*
 * TxDescriptors Valid Range: 64-4096 Default Value: 2048 This value is the
 * number of transmit descriptors allocated by the driver. Increasing this
 * value allows the driver to queue more transmits. Each descriptor is 16
 * bytes. Performance tests have show the 2K value to be optimal for top
 * performance.
 */
#define DEFAULT_TXD     2048
#define MAX_TXD         4096
#define MIN_TXD         64

/*
 * RxDescriptors Valid Range: 64-4096 Default Value: 2048 This value is the
 * number of receive descriptors allocated for each RX queue. Increasing this
 * value allows the driver to buffer more incoming packets. Each descriptor
 * is 16 bytes.  A receive buffer is also allocated for each descriptor.
 *
 * Note: with 8 rings and a dual port card, it is possible to bump up
 *      against the system mbuf pool limit, you can tune nmbclusters
 *      to adjust for this.
 */
#define DEFAULT_RXD     2048
#define MAX_RXD         4096
#define MIN_RXD         64

/* Alignment for rings */
#define DBA_ALIGN       128

/*
 * This is the max watchdog interval, ie. the time that can
 * pass between any two TX clean operations, such only happening
 * when the TX hardware is functioning.
 */
#define IXGBE_WATCHDOG  (10 * hz)

/*
 * This parameters control when the driver calls the routine to reclaim
 * transmit descriptors.
 */
#define IXGBE_TX_CLEANUP_THRESHOLD(_a)  ((_a)->num_tx_desc / 8)
#define IXGBE_TX_OP_THRESHOLD(_a)       ((_a)->num_tx_desc / 32)

/* These defines are used in MTU calculations */
#define IXGBE_MAX_FRAME_SIZE  9728
#define IXGBE_MTU_HDR         (ETHER_HDR_LEN + ETHER_CRC_LEN)
#define IXGBE_MTU_HDR_VLAN    (ETHER_HDR_LEN + ETHER_CRC_LEN + \
                               ETHER_VLAN_ENCAP_LEN)
#define IXGBE_MAX_MTU         (IXGBE_MAX_FRAME_SIZE - IXGBE_MTU_HDR)
#define IXGBE_MAX_MTU_VLAN    (IXGBE_MAX_FRAME_SIZE - IXGBE_MTU_HDR_VLAN)

/* Flow control constants */
#define IXGBE_FC_PAUSE        0xFFFF

/*
 * Used for optimizing small rx mbufs.  Effort is made to keep the copy
 * small and aligned for the CPU L1 cache.
 *
 * MHLEN is typically 168 bytes, giving us 8-byte alignment.  Getting
 * 32 byte alignment needed for the fast bcopy results in 8 bytes being
 * wasted.  Getting 64 byte alignment, which _should_ be ideal for
 * modern Intel CPUs, results in 40 bytes wasted and a significant drop
 * in observed efficiency of the optimization, 97.9% -> 81.8%.
 */
#define IXGBE_RX_COPY_LEN_MAX     (MHLEN - ETHER_ALIGN)

/*
 * Default TX WTHRESH value.
 * Currently, we don't use the Tx Head Pointer Write Back function.
 */
#define IXGBE_TX_WTHRESH        5

/*
 * The max number of descriptors that one packet can use is 40 - WTHRESH - 2.
 * Though 82598 does not have this limit, we don't want long TX chain.
 * 33 should be large enough even for 64K TSO
 * (32 * 2K mbuf cluster and 1 x mbuf header).
 *
 * Reference: 82599-X550 datasheet 7.2.1.1 "Transmit Storage in System Memory".
 */
#define IXGBE_82599_SCATTER_MAX (40 - IXGBE_TX_WTHRESH - 2)
#define IXGBE_SCATTER_DEFAULT   33

/* Defines for printing debug information */
#define DEBUG_INIT  0
#define DEBUG_IOCTL 0
#define DEBUG_HW    0

#define INIT_DEBUGOUT(S)            if (DEBUG_INIT)  printf(S "\n")
#define INIT_DEBUGOUT1(S, A)        if (DEBUG_INIT)  printf(S "\n", A)
#define INIT_DEBUGOUT2(S, A, B)     if (DEBUG_INIT)  printf(S "\n", A, B)
#define IOCTL_DEBUGOUT(S)           if (DEBUG_IOCTL) printf(S "\n")
#define IOCTL_DEBUGOUT1(S, A)       if (DEBUG_IOCTL) printf(S "\n", A)
#define IOCTL_DEBUGOUT2(S, A, B)    if (DEBUG_IOCTL) printf(S "\n", A, B)
#define HW_DEBUGOUT(S)              if (DEBUG_HW) printf(S "\n")
#define HW_DEBUGOUT1(S, A)          if (DEBUG_HW) printf(S "\n", A)
#define HW_DEBUGOUT2(S, A, B)       if (DEBUG_HW) printf(S "\n", A, B)

#define MAX_NUM_MULTICAST_ADDRESSES     128
#define MSIX_82598_BAR                  3
#define MSIX_82599_BAR                  4
#define IXGBE_TSO_SIZE                  262140
#define IXGBE_RX_HDR                    128
#define IXGBE_VFTA_SIZE                 128
#define IXGBE_BR_SIZE                   2048
#define IXGBE_QUEUE_MIN_FREE            32
#define IXGBE_MAX_TX_BUSY               10
#define IXGBE_QUEUE_HUNG                0x80000000

#define IXGBE_EITR_DEFAULT              128

/* IOCTL define to gather SFP+ Diagnostic data */
#define SIOCGI2C        SIOCGIFGENERIC

/* Offload bits in mbuf flag */
#define M_CSUM_OFFLOAD  \
    (M_CSUM_IPv4|M_CSUM_UDPv4|M_CSUM_TCPv4|M_CSUM_UDPv6|M_CSUM_TCPv6)

/* Backward compatibility items for very old versions */
#ifndef pci_find_cap
#define pci_find_cap pci_find_extcap
#endif

#ifndef DEVMETHOD_END
#define DEVMETHOD_END { NULL, NULL }
#endif

/*
 * Interrupt Moderation parameters
 */
#define IXGBE_LOW_LATENCY       128
#define IXGBE_AVE_LATENCY       400
#define IXGBE_BULK_LATENCY      1200

/* Using 1FF (the max value), the interval is ~1.05ms */
#define IXGBE_LINK_ITR_QUANTA  0x1FF
#define IXGBE_LINK_ITR         ((IXGBE_LINK_ITR_QUANTA << 3) & \
                                IXGBE_EITR_ITR_INT_MASK)


/************************************************************************
 * vendor_info_array
 *
 *   Contains the list of Subvendor/Subdevice IDs on
 *   which the driver should load.
 ************************************************************************/
typedef struct _ixgbe_vendor_info_t {
        unsigned int vendor_id;
        unsigned int device_id;
        unsigned int subvendor_id;
        unsigned int subdevice_id;
        unsigned int index;
} ixgbe_vendor_info_t;

/* This is used to get SFP+ module data */
struct ixgbe_i2c_req {
        u8 dev_addr;
        u8 offset;
        u8 len;
        u8 data[8];
};

struct ixgbe_bp_data {
        u32 low;
        u32 high;
        u32 log;
};

struct ixgbe_tx_buf {
        union ixgbe_adv_tx_desc *eop;
        struct mbuf             *m_head;
        bus_dmamap_t            map;
};

struct ixgbe_rx_buf {
        struct mbuf    *buf;
        struct mbuf    *fmp;
        bus_dmamap_t   pmap;
        u_int          flags;
#define IXGBE_RX_COPY  0x01
        uint64_t       addr;
};

/*
 * Bus dma allocation structure used by ixgbe_dma_malloc and ixgbe_dma_free
 */
struct ixgbe_dma_alloc {
        bus_addr_t        dma_paddr;
        void              *dma_vaddr;
        ixgbe_dma_tag_t   *dma_tag;
        bus_dmamap_t      dma_map;
        bus_dma_segment_t dma_seg;
        bus_size_t        dma_size;
};

struct ixgbe_mc_addr {
        u8  addr[IXGBE_ETH_LENGTH_OF_ADDRESS];
        u32 vmdq;
};

/*
 * Driver queue struct: this is the interrupt container
 *                      for the associated tx and rx ring.
 */
struct ix_queue {
        struct ixgbe_softc *sc;
        u32              msix;           /* This queue's MSI-X vector */
        u32              eitr_setting;
        u8               me;
        struct resource  *res;
        int              busy;
        struct tx_ring   *txr;
        struct rx_ring   *rxr;
        struct work      wq_cookie;
        void             *que_si;
        /* Per queue event counters */
        struct evcnt     irqs;          /* Hardware interrupt */
        struct evcnt     handleq;       /* software_interrupt */
        struct evcnt     req;           /* deferred */
        char             namebuf[32];   /* Name for sysctl */
        char             evnamebuf[32]; /* Name for evcnt */

        /* Lock for disabled_count and this queue's EIMS/EIMC bit */
        kmutex_t         dc_mtx;
        /*
         * disabled_count means:
         *     0   : this queue is enabled
         *     > 0 : this queue is disabled
         *           the value is ixgbe_disable_queue() called count
         */
        int              disabled_count;
        bool             txrx_use_workqueue;
};

/*
 * The transmit ring, one per queue
 */
struct tx_ring {
        struct ixgbe_softc      *sc;
        kmutex_t                tx_mtx;
        u8                      me;
        u32                     tail;
        int                     busy;
        union ixgbe_adv_tx_desc *tx_base;
        struct ixgbe_tx_buf     *tx_buffers;
        struct ixgbe_dma_alloc  txdma;
        volatile u16            tx_avail;
        u16                     next_avail_desc;
        u16                     next_to_clean;
        u16                     num_desc;
        ixgbe_dma_tag_t         *txtag;
#if 0
        char                    mtx_name[16]; /* NetBSD has no mutex name */
#endif
        pcq_t                   *txr_interq;
        struct work             wq_cookie;
        void                    *txr_si;
        bool                    txr_no_space; /* Like IFF_OACTIVE */

#ifdef IXGBE_FDIR
        /* Flow Director */
        u16                     atr_sample;
        u16                     atr_count;
#endif

        u64                     bytes;  /* Used for AIM */
        u64                     packets;
        /* Soft Stats */
        struct evcnt            total_packets;
        struct evcnt            pcq_drops;
        struct evcnt            no_desc_avail;
        struct evcnt            tso_tx;
        /* Per queue counters.  The adapter total is in struct adapter */
        u64              q_efbig_tx_dma_setup;
        u64              q_mbuf_defrag_failed;
        u64              q_efbig2_tx_dma_setup;
        u64              q_einval_tx_dma_setup;
        u64              q_other_tx_dma_setup;
        u64              q_eagain_tx_dma_setup;
        u64              q_enomem_tx_dma_setup;
        u64              q_tso_err;
};


/*
 * The Receive ring, one per rx queue
 */
struct rx_ring {
        struct ixgbe_softc      *sc;
        kmutex_t                rx_mtx;
        u8                      me;
        u32                     tail;
        union ixgbe_adv_rx_desc *rx_base;
        struct ixgbe_dma_alloc  rxdma;
#ifdef LRO
        struct lro_ctrl         lro;
        bool                    lro_enabled;
#endif /* LRO */
#ifdef RSC
        bool                    hw_rsc;
#endif
        bool                    vtag_strip;
        bool                    discard_multidesc;
        u16                     next_to_refresh;
        u16                     next_to_check;
        u16                     num_desc;
        u16                     mbuf_sz;
#if 0
        char                    mtx_name[16]; /* NetBSD has no mutex name */
#endif
        struct ixgbe_rx_buf     *rx_buffers;
        ixgbe_dma_tag_t         *ptag;

        u64                     bytes; /* Used for AIM calc */
        u64                     packets;

        /* Soft stats */
        struct evcnt            rx_copies;
        struct evcnt            rx_packets;
        struct evcnt            rx_bytes;
        struct evcnt            rx_discarded;
        struct evcnt            no_mbuf;
#ifdef RSC
        u64                     rsc_num;
#endif
};

struct ixgbe_vf {
        u_int    pool;
        u_int    rar_index;
        u_int    max_frame_size;
        uint32_t flags;
        uint8_t  ether_addr[ETHER_ADDR_LEN];
        uint16_t mc_hash[IXGBE_MAX_VF_MC];
        uint16_t num_mc_hashes;
        uint16_t default_vlan;
        uint16_t vlan_tag;
        uint16_t api_ver;
};

/*
 * NetBSD: For traffic class
 * Currently, the following structure is only for statistics.
 */
struct ixgbe_tc {
        char             evnamebuf[32];
};

/* Our adapter structure */
struct ixgbe_softc {
        struct ixgbe_hw         hw;
        struct ixgbe_osdep      osdep;

        device_t                dev;
        struct ifnet            *ifp;
        struct if_percpuq       *ipq;   /* softint-based input queues */

        struct resource         *pci_mem;

        /* NetBSD: Interrupt resources are in osdep */

        struct ifmedia          media;
        callout_t               timer;
        struct workqueue        *timer_wq;
        struct work             timer_wc;
        u_int                   timer_pending;

        u_short                 if_flags;       /* saved ifp->if_flags */
        int                     ec_capenable;   /* saved ec->ec_capenable */

        kmutex_t                core_mtx;

        unsigned int            num_queues;

        /*
         * Shadow VFTA table, this is needed because
         * the real vlan filter table gets cleared during
         * a soft reset and the driver needs to be able
         * to repopulate it.
         */
        u32                     shadow_vfta[IXGBE_VFTA_SIZE];

        /* Info about the interface */
        int                     advertise;  /* link speeds */
        bool                    enable_aim; /* adaptive interrupt moderation */
        int                     max_interrupt_rate;
        int                     link_active; /* Use LINK_STATE_* value */
        u16                     max_frame_size;
        u16                     num_segs;
        u32                     link_speed;
        bool                    link_up;
        bool                    link_enabled;
        u32                     vector;
        u16                     dmac;
        u32                     phy_layer;

        /* Power management-related */
        bool                    wol_support;
        u32                     wufc;

        /* Mbuf cluster size */
        u32                     rx_mbuf_sz;

        bool                    schedule_wqs_ok;

        /* Flow Director */
        int                     fdir_reinit;

        /* Admin task */
        struct workqueue        *admin_wq; /* Link, SFP, PHY and FDIR */
        struct work             admin_wc;
        u_int                   admin_pending;
        volatile u32            task_requests;
        kmutex_t                admin_mtx; /* lock for admin_pending, task_request */
                                           /*
                                            * Don't acquire this mutex while
                                            * holding rx_mtx or tx_mtx, and
                                            * vice versa.
                                            */

        bool                    txrx_use_workqueue;

        /*
         * Workqueue for ixgbe_handle_que_work().
         *
         * que_wq's "enqueued flag" is not required, because twice
         * workqueue_enqueue() for ixgbe_handle_que_work() is avoided by
         * masking the queue's interrupt by EIMC. See also ixgbe_msix_que().
         */
        struct workqueue        *que_wq;
        /* Workqueue for ixgbe_deferred_mq_start_work() */
        struct workqueue        *txr_wq;
        percpu_t                *txr_wq_enqueued;

        /*
         * Queues:
         *   This is the irq holder, it has
         *   and RX/TX pair or rings associated
         *   with it.
         */
        struct ix_queue         *queues;

        /*
         * Transmit rings
         *      Allocated at run time, an array of rings
         */
        struct tx_ring          *tx_rings;
        u32                     num_tx_desc;
        u32                     tx_process_limit;

        /*
         * Receive rings
         *      Allocated at run time, an array of rings
         */
        struct rx_ring          *rx_rings;
        u64                     active_queues;
        u32                     num_rx_desc;
        u32                     rx_process_limit;
        u32                     rx_copy_len;

        /* Multicast array memory */
        struct ixgbe_mc_addr    *mta;

        /* SR-IOV */
        int                     iov_mode;
        int                     num_vfs;
        int                     pool;
        struct ixgbe_vf         *vfs;

        /* Bypass */
        struct ixgbe_bp_data    bypass;

        /* Netmap */
        void                    (*init_locked)(struct ixgbe_softc *);
        void                    (*stop_locked)(void *);

        /* Firmware error check */
        u_int                   recovery_mode;
        callout_t               recovery_mode_timer;
        struct workqueue        *recovery_mode_timer_wq;
        struct work             recovery_mode_timer_wc;
        u_int                   recovery_mode_timer_pending;

        /* Misc stats maintained by the driver */
        struct evcnt            efbig_tx_dma_setup;
        struct evcnt            mbuf_defrag_failed;
        struct evcnt            efbig2_tx_dma_setup;
        struct evcnt            einval_tx_dma_setup;
        struct evcnt            other_tx_dma_setup;
        struct evcnt            eagain_tx_dma_setup;
        struct evcnt            enomem_tx_dma_setup;
        struct evcnt            tso_err;
        struct evcnt            watchdog_events;
        struct evcnt            admin_irqev;
        struct evcnt            link_workev;
        struct evcnt            mod_workev;
        struct evcnt            msf_workev;
        struct evcnt            phy_workev;

        union {
                struct ixgbe_hw_stats pf;
                struct ixgbevf_hw_stats vf;
        } stats;
#if __FreeBSD_version >= 1100036
        /* counter(9) stats */
        u64                     ipackets;
        u64                     ierrors;
        u64                     opackets;
        u64                     oerrors;
        u64                     ibytes;
        u64                     obytes;
        u64                     imcasts;
        u64                     omcasts;
        u64                     iqdrops;
        u64                     noproto;
#endif
        /* Feature capable/enabled flags.  See ixgbe_features.h */
        u32                     feat_cap;
        u32                     feat_en;

        /* Traffic classes */
        struct ixgbe_tc tcs[IXGBE_DCB_MAX_TRAFFIC_CLASS];

        struct sysctllog        *sysctllog;
        const struct sysctlnode *sysctltop;
        struct timeval          lasterr_time;
};

/* Precision Time Sync (IEEE 1588) defines */
#define ETHERTYPE_IEEE1588      0x88F7
#define PICOSECS_PER_TICK       20833
#define TSYNC_UDP_PORT          319 /* UDP port for the protocol */
#define IXGBE_ADVTXD_TSTAMP     0x00080000


#define IXGBE_CORE_LOCK_INIT(_sc, _name) \
        mutex_init(&(_sc)->core_mtx, MUTEX_DEFAULT, IPL_SOFTNET)
#define IXGBE_CORE_LOCK_DESTROY(_sc)      mutex_destroy(&(_sc)->core_mtx)
#define IXGBE_TX_LOCK_DESTROY(_sc)        mutex_destroy(&(_sc)->tx_mtx)
#define IXGBE_RX_LOCK_DESTROY(_sc)        mutex_destroy(&(_sc)->rx_mtx)
#define IXGBE_CORE_LOCK(_sc)              mutex_enter(&(_sc)->core_mtx)
#define IXGBE_TX_LOCK(_sc)                mutex_enter(&(_sc)->tx_mtx)
#define IXGBE_TX_TRYLOCK(_sc)             mutex_tryenter(&(_sc)->tx_mtx)
#define IXGBE_RX_LOCK(_sc)                mutex_enter(&(_sc)->rx_mtx)
#define IXGBE_CORE_UNLOCK(_sc)            mutex_exit(&(_sc)->core_mtx)
#define IXGBE_TX_UNLOCK(_sc)              mutex_exit(&(_sc)->tx_mtx)
#define IXGBE_RX_UNLOCK(_sc)              mutex_exit(&(_sc)->rx_mtx)
#define IXGBE_CORE_LOCK_ASSERT(_sc)       KASSERT(mutex_owned(&(_sc)->core_mtx))
#define IXGBE_TX_LOCK_ASSERT(_sc)         KASSERT(mutex_owned(&(_sc)->tx_mtx))

/* External PHY register addresses */
#define IXGBE_PHY_CURRENT_TEMP          0xC820
#define IXGBE_PHY_OVERTEMP_STATUS       0xC830

/* Sysctl help messages; displayed with sysctl -d */
#define IXGBE_SYSCTL_DESC_ADV_SPEED \
        "\nControl advertised link speed using these flags:\n" \
        "\t0x1  - advertise 100M\n" \
        "\t0x2  - advertise 1G\n" \
        "\t0x4  - advertise 10G\n" \
        "\t0x8  - advertise 10M\n" \
        "\t0x10 - advertise 2.5G\n" \
        "\t0x20 - advertise 5G\n\n" \
        "\t5G, 2.5G, 100M and 10M are only supported on certain adapters."

#define IXGBE_SYSCTL_DESC_SET_FC \
        "\nSet flow control mode using these values:\n" \
        "\t0 - off\n" \
        "\t1 - rx pause\n" \
        "\t2 - tx pause\n" \
        "\t3 - tx and rx pause"

/*
 * Find the number of unrefreshed RX descriptors
 */
static __inline u16
ixgbe_rx_unrefreshed(struct rx_ring *rxr)
{
        if (rxr->next_to_check > rxr->next_to_refresh)
                return (rxr->next_to_check - rxr->next_to_refresh - 1);
        else
                return ((rxr->num_desc + rxr->next_to_check) -
                    rxr->next_to_refresh - 1);
}

static __inline int
ixgbe_legacy_ring_empty(struct ifnet *ifp, pcq_t *dummy)
{
        UNREFERENCED_1PARAMETER(dummy);

        return IFQ_IS_EMPTY(&ifp->if_snd);
}

static __inline int
ixgbe_mq_ring_empty(struct ifnet *dummy, pcq_t *interq)
{
        UNREFERENCED_1PARAMETER(dummy);

        return (pcq_peek(interq) == NULL);
}

/*
 * This checks for a zero mac addr, something that will be likely
 * unless the Admin on the Host has created one.
 */
static __inline bool
ixv_check_ether_addr(u8 *addr)
{
        bool status = TRUE;

        if ((addr[0] == 0 && addr[1]== 0 && addr[2] == 0 &&
            addr[3] == 0 && addr[4]== 0 && addr[5] == 0))
                status = FALSE;

        return (status);
}

/*
 * This checks the sc->recovery_mode software flag which is
 * set by ixgbe_fw_recovery_mode().
 *
 */
static inline bool
ixgbe_fw_recovery_mode_swflag(struct ixgbe_softc *sc)
{
        return (sc->feat_en & IXGBE_FEATURE_RECOVERY_MODE) &&
            atomic_load_acq_uint(&sc->recovery_mode);
}

/* Shared Prototypes */
void ixgbe_legacy_start(struct ifnet *);
int  ixgbe_legacy_start_locked(struct ifnet *, struct tx_ring *);
int  ixgbe_mq_start(struct ifnet *, struct mbuf *);
int  ixgbe_mq_start_locked(struct ifnet *, struct tx_ring *);
void ixgbe_deferred_mq_start(void *);
void ixgbe_deferred_mq_start_work(struct work *, void *);
void ixgbe_drain_all(struct ixgbe_softc *);

int  ixgbe_allocate_queues(struct ixgbe_softc *);
void ixgbe_free_queues(struct ixgbe_softc *);
int  ixgbe_setup_transmit_structures(struct ixgbe_softc *);
void ixgbe_free_transmit_structures(struct ixgbe_softc *);
int  ixgbe_setup_receive_structures(struct ixgbe_softc *);
void ixgbe_free_receive_structures(struct ixgbe_softc *);
bool ixgbe_txeof(struct tx_ring *);
bool ixgbe_rxeof(struct ix_queue *);

#define IXGBE_REQUEST_TASK_MOD          0x01
#define IXGBE_REQUEST_TASK_MOD_WOI      0x02
#define IXGBE_REQUEST_TASK_MSF          0x04
#define IXGBE_REQUEST_TASK_MSF_WOI      0x08
#define IXGBE_REQUEST_TASK_MBX          0x10
#define IXGBE_REQUEST_TASK_FDIR         0x20
#define IXGBE_REQUEST_TASK_PHY          0x40
#define IXGBE_REQUEST_TASK_LSC          0x80

/* For NetBSD */
const struct sysctlnode *ixgbe_sysctl_instance(struct ixgbe_softc *);

#include "ixgbe_bypass.h"
#include "ixgbe_fdir.h"
#include "ixgbe_rss.h"
#include "ixgbe_netmap.h"

#endif /* _IXGBE_H_ */