/*      $OpenBSD: if_mskvar.h,v 1.3 2006/12/28 16:34:42 kettenis Exp $  */
/*      $NetBSD: if_mskvar.h,v 1.25 2020/04/29 20:03:52 jakllsch Exp $  */

/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* 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.
*
* 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.
*/
/*      $OpenBSD: if_mskvar.h,v 1.1 2006/08/16 21:06:23 kettenis Exp $  */

/*
* Copyright (c) 1997, 1998, 1999, 2000
*      Bill Paul <[email protected]>.  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. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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: /c/ncvs/src/sys/pci/if_skreg.h,v 1.9 2000/04/22 02:16:37 wpaul Exp $
*/

/*
* Copyright (c) 2003 Nathan L. Binkert <[email protected]>
*
* 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.
*/

#ifndef _DEV_PCI_IF_MSKVAR_H_
#define _DEV_PCI_IF_MSKVAR_H_

#include <sys/rndsource.h>

struct sk_jpool_entry {
       int                             slot;
       LIST_ENTRY(sk_jpool_entry)      jpool_entries;
};

struct sk_chain {
       struct mbuf             *sk_mbuf;
       bus_dmamap_t            sk_dmamap;
};

/*
* Number of DMA segments in a TxCB. Note that this is carefully
* chosen to make the total struct size an even power of two. It's
* critical that no TxCB be split across a page boundary since
* no attempt is made to allocate physically contiguous memory.
*
*/
#define SK_NTXSEG      30

struct msk_chain_data {
       struct sk_chain         sk_tx_chain[MSK_TX_RING_CNT];
       struct sk_chain         sk_rx_chain[MSK_RX_RING_CNT];
       bus_dmamap_t            sk_rx_jumbo_map;
       unsigned                sk_tx_prod;
       unsigned                sk_tx_cons;
       unsigned                sk_tx_cnt;
       u_int32_t               sk_tx_hiaddr;
       unsigned                sk_rx_prod;
       unsigned                sk_rx_cons;
       unsigned                sk_rx_cnt;
       u_int32_t               sk_rx_hiaddr;
       /* Stick the jumbo mem management stuff here too. */
       void *                  sk_jslots[MSK_JSLOTS];
       void                    *sk_jumbo_buf;
       bus_dma_segment_t       sk_jumbo_seg;
       int                     sk_jumbo_nseg;
};

struct msk_ring_data {
       struct msk_tx_desc      sk_tx_ring[MSK_TX_RING_CNT];
       struct msk_rx_desc      sk_rx_ring[MSK_RX_RING_CNT];
};

#define MSK_TX_RING_ADDR(sc, i) \
   ((sc)->sk_ring_map->dm_segs[0].ds_addr + \
    offsetof(struct msk_ring_data, sk_tx_ring[(i)]))

#define MSK_RX_RING_ADDR(sc, i) \
   ((sc)->sk_ring_map->dm_segs[0].ds_addr + \
    offsetof(struct msk_ring_data, sk_rx_ring[(i)]))

#define MSK_CDOFF(x)    offsetof(struct msk_ring_data, x)
#define MSK_CDTXOFF(x)  MSK_CDOFF(sk_tx_ring[(x)])
#define MSK_CDRXOFF(x)  MSK_CDOFF(sk_rx_ring[(x)])
#define MSK_CDSTOFF(x)  ((x) * sizeof(struct msk_status_desc))

#define MSK_CDTXSYNC(sc, x, n, ops)                                     \
do {                                                                    \
       int __x, __n;                                                   \
                                                                       \
       __x = (x);                                                      \
       __n = (n);                                                      \
                                                                       \
       /* If it will wrap around, sync to the end of the ring. */      \
       if ((__x + __n) > MSK_TX_RING_CNT) {                            \
               bus_dmamap_sync((sc)->sk_softc->sc_dmatag,              \
                   (sc)->sk_ring_map, MSK_CDTXOFF(__x),                \
                   sizeof(struct msk_tx_desc) * (MSK_TX_RING_CNT - __x), \
                   (ops));                                             \
               __n -= (MSK_TX_RING_CNT - __x);                         \
               __x = 0;                                                \
       }                                                               \
                                                                       \
       /* Now sync whatever is left. */                                \
       bus_dmamap_sync((sc)->sk_softc->sc_dmatag, (sc)->sk_ring_map,   \
           MSK_CDTXOFF((__x)), sizeof(struct msk_tx_desc) * __n, (ops)); \
} while (/*CONSTCOND*/0)

#define MSK_CDRXSYNC(sc, x, ops)                                        \
do {                                                                    \
       bus_dmamap_sync((sc)->sk_softc->sc_dmatag, (sc)->sk_ring_map,   \
           MSK_CDRXOFF((x)), sizeof(struct msk_rx_desc), (ops));       \
} while (/*CONSTCOND*/0)

#define MSK_CDSTSYNC(sc, x, ops)                                        \
do {                                                                    \
       bus_dmamap_sync((sc)->sc_dmatag, (sc)->sk_status_map,           \
           MSK_CDSTOFF((x)), sizeof(struct msk_status_desc), (ops));   \
} while (/*CONSTCOND*/0)

#define SK_INC(x, y)    (x) = (x + 1) % y

/* Forward decl. */
struct sk_if_softc;

/* Softc for the Yukon-II controller. */
struct sk_softc {
       device_t                sk_dev;
       bus_space_handle_t      sk_bhandle;     /* bus space handle */
       bus_space_tag_t         sk_btag;        /* bus space tag */
       bus_size_t              sk_bsize;       /* bus space size */
       void                    *sk_intrhand;   /* irq handler handle */
       pci_intr_handle_t       *sk_pihp;
       pci_chipset_tag_t       sk_pc;
       u_int8_t                sk_fibertype;
       u_int8_t                sk_type;
       u_int8_t                sk_rev;
       u_int8_t                sk_macs;        /* # of MACs */
       const char              *sk_name;
       u_int32_t               sk_ramsize;     /* amount of RAM on NIC */
       u_int32_t               sk_intrmask;
       struct sysctllog        *sk_clog;
       int                     sk_int_mod;
       int                     sk_int_mod_pending;
       bus_dma_tag_t           sc_dmatag;
       struct sk_if_softc      *sk_if[2];
       struct msk_status_desc  *sk_status_ring;
       bus_dmamap_t            sk_status_map;
       bus_dma_segment_t       sk_status_seg;
       int                     sk_status_nseg;
       int                     sk_status_idx;
       int                     sk_status_own_idx;
       u_int8_t                rnd_attached;
       krndsource_t            rnd_source;
};

/* Softc for each logical interface */
struct sk_if_softc {
       device_t                sk_dev;
       struct ethercom         sk_ethercom;    /* interface info */
       struct mii_data         sk_mii;
       u_int8_t                sk_enaddr[ETHER_ADDR_LEN]; /* station addr */
       u_int8_t                sk_port;        /* port # on controller */
       u_int32_t               sk_rx_ramstart;
       u_int32_t               sk_rx_ramend;
       u_int32_t               sk_tx_ramstart;
       u_int32_t               sk_tx_ramend;
       int                     sk_pktlen;      /* XXX set but unused for now */
       int                     sk_link;
       struct callout          sk_tick_ch;
       struct callout          sk_tick_rx;
       struct msk_chain_data   sk_cdata;
       struct msk_ring_data    *sk_rdata;
       bus_dmamap_t            sk_ring_map;
       bus_dma_segment_t       sk_ring_seg;
       int                     sk_ring_nseg;
       int                     sk_status_idx;
       struct sk_softc         *sk_softc;      /* parent controller */
       u_short                 sk_if_flags;
       kmutex_t                sk_jpool_mtx;
       LIST_HEAD(__sk_jfreehead, sk_jpool_entry)       sk_jfree_listhead;
       LIST_HEAD(__sk_jinusehead, sk_jpool_entry)      sk_jinuse_listhead;
};

struct skc_attach_args {
       u_int16_t       skc_port;
       u_int8_t        skc_type;
       u_int8_t        skc_rev;
};

#endif /* _DEV_PCI_IF_MSKVAR_H_ */

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