/*      $OpenBSD: malo.h,v 1.12 2013/12/06 21:03:03 deraadt Exp $ */

/*
 * Copyright (c) 2006 Claudio Jeker <claudio@openbsd.org>
 * Copyright (c) 2006 Marcus Glocker <mglocker@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.
 */

struct malo_rx_desc;
struct malo_rx_data;

struct malo_rx_ring {
        bus_dmamap_t            map;
        bus_dma_segment_t       seg;
        bus_addr_t              physaddr;
        struct malo_rx_desc     *desc;
        struct malo_rx_data     *data;
        int                     count;
        int                     cur;
        int                     next;
};

struct malo_tx_desc;
struct malo_tx_data;

struct malo_tx_ring {
        bus_dmamap_t            map;
        bus_dma_segment_t       seg;
        bus_addr_t              physaddr;
        struct malo_tx_desc     *desc;
        struct malo_tx_data     *data;
        int                     count;
        int                     queued;
        int                     cur;
        int                     next;
        int                     stat;
};

#define MALO_RX_RADIOTAP_PRESENT                                        \
        ((1 << IEEE80211_RADIOTAP_FLAGS) |                              \
         (1 << IEEE80211_RADIOTAP_CHANNEL) |                            \
         (1 << IEEE80211_RADIOTAP_RSSI))

struct malo_rx_radiotap_hdr {
        struct ieee80211_radiotap_header        wr_ihdr;
        uint8_t                                 wr_flags;
        uint16_t                                wr_chan_freq;
        uint16_t                                wr_chan_flags;
        uint8_t                                 wr_rssi;
        uint8_t                                 wr_max_rssi;
} __packed;

#define MALO_TX_RADIOTAP_PRESENT                                        \
        ((1 << IEEE80211_RADIOTAP_FLAGS) |                              \
         (1 << IEEE80211_RADIOTAP_RATE) |                               \
         (1 << IEEE80211_RADIOTAP_CHANNEL))

struct malo_tx_radiotap_hdr {
        struct ieee80211_radiotap_header        wt_ihdr;
        uint8_t                                 wt_flags;
        uint8_t                                 wt_rate;
        uint16_t                                wt_chan_freq;
        uint16_t                                wt_chan_flags;
} __packed;

struct malo_softc {
        struct device           sc_dev;
        struct ieee80211com     sc_ic;
        struct malo_rx_ring     sc_rxring;
        struct malo_tx_ring     sc_txring;

        bus_dma_tag_t           sc_dmat;
        bus_space_tag_t         sc_mem1_bt;
        bus_space_tag_t         sc_mem2_bt;
        bus_space_handle_t      sc_mem1_bh;
        bus_space_handle_t      sc_mem2_bh;

        bus_dmamap_t            sc_cmd_dmam;
        bus_dma_segment_t       sc_cmd_dmas;
        void                    *sc_cmd_mem;
        bus_addr_t              sc_cmd_dmaaddr;
        uint32_t                *sc_cookie;
        bus_addr_t              sc_cookie_dmaaddr;

        uint32_t                sc_RxPdWrPtr;
        uint32_t                sc_RxPdRdPtr;

        int                     (*sc_newstate)
                                (struct ieee80211com *,
                                 enum ieee80211_state, int);

        int                     (*sc_enable)(struct malo_softc *);
        void                    (*sc_disable)(struct malo_softc *);

        struct timeout          sc_scan_to;
        int                     sc_tx_timer;
        int                     sc_last_txrate;

#if NBPFILTER > 0
        caddr_t         sc_drvbpf;

        union {
                struct malo_rx_radiotap_hdr th;
                uint8_t pad[64];
        }               sc_rxtapu;
#define sc_rxtap        sc_rxtapu.th
        int             sc_rxtap_len;

        union {
                struct malo_tx_radiotap_hdr th;
                uint8_t pad[64];
        }               sc_txtapu;
#define sc_txtap        sc_txtapu.th
        int             sc_txtap_len;
#endif
};

int malo_intr(void *arg);
int malo_attach(struct malo_softc *sc);
int malo_detach(void *arg);
int malo_init(struct ifnet *);
void malo_stop(struct malo_softc *);