/*      $OpenBSD: if_iwivar.h,v 1.26 2016/09/05 08:17:48 tedu Exp $     */

/*-
 * Copyright (c) 2004-2006
 *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
 *
 * 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 iwi_rx_radiotap_header {
        struct ieee80211_radiotap_header wr_ihdr;
        uint8_t         wr_flags;
        uint8_t         wr_rate;
        uint16_t        wr_chan_freq;
        uint16_t        wr_chan_flags;
        uint8_t         wr_antsignal;
        uint8_t         wr_antenna;
} __packed;

#define IWI_RX_RADIOTAP_PRESENT                                         \
        ((1 << IEEE80211_RADIOTAP_FLAGS) |                              \
         (1 << IEEE80211_RADIOTAP_RATE) |                               \
         (1 << IEEE80211_RADIOTAP_CHANNEL) |                            \
         (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) |                       \
         (1 << IEEE80211_RADIOTAP_ANTENNA))

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

#define IWI_TX_RADIOTAP_PRESENT                                         \
        ((1 << IEEE80211_RADIOTAP_FLAGS) |                              \
         (1 << IEEE80211_RADIOTAP_CHANNEL))


struct iwi_cmd_ring {
        bus_dmamap_t            map;
        bus_dma_segment_t       seg;
        struct iwi_cmd_desc     *desc;
        int                     queued;
        int                     cur;
        int                     next;
};

struct iwi_tx_data {
        bus_dmamap_t            map;
        struct mbuf             *m;
        struct ieee80211_node   *ni;
};

struct iwi_tx_ring {
        bus_dmamap_t            map;
        bus_dma_segment_t       seg;
        bus_size_t              csr_ridx;
        bus_size_t              csr_widx;
        struct iwi_tx_desc      *desc;
        struct iwi_tx_data      data[IWI_TX_RING_COUNT];
        int                     queued;
        int                     cur;
        int                     next;
};

struct iwi_rx_data {
        bus_dmamap_t            map;
        struct mbuf             *m;
        uint32_t                reg;
};

struct iwi_rx_ring {
        struct iwi_rx_data      data[IWI_RX_RING_COUNT];
        int                     cur;
};

struct iwi_softc {
        struct device           sc_dev;

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

        struct rwlock           sc_rwlock;

        bus_dma_tag_t           sc_dmat;

        struct iwi_cmd_ring     cmdq;
        struct iwi_tx_ring      txq[4];
        struct iwi_rx_ring      rxq;

#define IWI_MAX_NODE    32
        uint8_t                 sta[IWI_MAX_NODE][IEEE80211_ADDR_LEN];
        uint8_t                 nsta;

        bus_space_tag_t         sc_st;
        bus_space_handle_t      sc_sh;
        void                    *sc_ih;
        pci_chipset_tag_t       sc_pct;
        pcitag_t                sc_pcitag;
        bus_size_t              sc_sz;

        struct task             init_task;

        int                     sc_tx_timer;

#if NBPFILTER > 0
        caddr_t                 sc_drvbpf;

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

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