/*      $NetBSD: if_nfevar.h,v 1.12 2020/03/01 15:43:58 thorpej Exp $   */
/*      $OpenBSD: if_nfevar.h,v 1.13 2007/12/05 08:30:33 jsg Exp $      */

/*-
 * Copyright (c) 2005 Jonathan Gray <jsg@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#define NFE_IFQ_MAXLEN  64

struct nfe_tx_data {
        bus_dmamap_t    map;
        bus_dmamap_t    active;
        struct mbuf     *m;
};

struct nfe_tx_ring {
        bus_dmamap_t            map;
        bus_dma_segment_t       seg;
        bus_addr_t              physaddr;
        struct nfe_desc32       *desc32;
        struct nfe_desc64       *desc64;
        struct nfe_tx_data      data[NFE_TX_RING_COUNT];
        int                     queued;
        int                     cur;
        int                     next;
};

struct nfe_jbuf {
        void                    *buf;
        bus_addr_t              physaddr;
        SLIST_ENTRY(nfe_jbuf)   jnext;
};

struct nfe_rx_data {
        bus_dmamap_t    map;
        struct mbuf     *m;
};

struct nfe_rx_ring {
        bus_dmamap_t            map;
        bus_dma_segment_t       seg;
        bus_dmamap_t            jmap;
        bus_dma_segment_t       jseg;
        bus_addr_t              physaddr;
        struct nfe_desc32       *desc32;
        struct nfe_desc64       *desc64;
        void                    *jpool;
        struct nfe_rx_data      data[NFE_RX_RING_COUNT];
        struct nfe_jbuf         jbuf[NFE_JPOOL_COUNT];
        int                     jbufmap[NFE_RX_RING_COUNT];
        SLIST_HEAD(, nfe_jbuf)  jfreelist;
        int                     bufsz;
        int                     cur;
        int                     next;
        kmutex_t                mtx;
};

struct nfe_softc {
        device_t                sc_dev;
        struct ethercom         sc_ethercom;
        uint8_t                 sc_enaddr[ETHER_ADDR_LEN];
        pci_chipset_tag_t       sc_pc;
        bus_space_handle_t      sc_memh;
        bus_space_tag_t         sc_memt;
        bus_size_t              sc_mems;
        void                    *sc_ih;
        bus_dma_tag_t           sc_dmat;
        bool                    sc_dmat_needs_free;
        struct mii_data         sc_mii;
        struct callout          sc_tick_ch;

        u_short                 sc_if_flags;
        u_int                   sc_flags;
#define NFE_JUMBO_SUP           0x01
#define NFE_40BIT_ADDR          0x02
#define NFE_HW_CSUM             0x04
#define NFE_HW_VLAN             0x08
#define NFE_USE_JUMBO           0x10
#define NFE_CORRECT_MACADDR     0x20
#define NFE_PWR_MGMT            0x40

        uint32_t                rxtxctl;
        uint8_t                 mii_phyaddr;

        struct nfe_tx_ring      txq;
        struct nfe_rx_ring      rxq;
};