/*	$OpenBSD: if_iwnvar.h,v 1.2 2007/11/19 19:34:25 damien Exp $	*/

/*-
 * Copyright (c) 2007
 *	Damien Bergamini <damien.bergamini@free.fr>
 *
 * 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 iwn_rx_radiotap_header {
	struct ieee80211_radiotap_header wr_ihdr;
	uint64_t	wr_tsft;
	uint8_t		wr_flags;
	uint8_t		wr_rate;
	uint16_t	wr_chan_freq;
	uint16_t	wr_chan_flags;
	int8_t		wr_dbm_antsignal;
	int8_t		wr_dbm_antnoise;
} __packed;

#define IWN_RX_RADIOTAP_PRESENT						\
	((1 << IEEE80211_RADIOTAP_TSFT) |				\
	 (1 << IEEE80211_RADIOTAP_FLAGS) |				\
	 (1 << IEEE80211_RADIOTAP_RATE) |				\
	 (1 << IEEE80211_RADIOTAP_CHANNEL) |				\
	 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |			\
	 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE))

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

#define IWN_TX_RADIOTAP_PRESENT						\
	((1 << IEEE80211_RADIOTAP_FLAGS) |				\
	 (1 << IEEE80211_RADIOTAP_RATE) |				\
	 (1 << IEEE80211_RADIOTAP_CHANNEL) |				\
	 (1 << IEEE80211_RADIOTAP_HWQUEUE))

struct iwn_dma_info {
	bus_dma_tag_t		tag;
	bus_dmamap_t		map;
	bus_dma_segment_t	seg;
	bus_addr_t		paddr;
	caddr_t			vaddr;
	bus_size_t		size;
};

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

struct iwn_tx_ring {
	struct iwn_dma_info	desc_dma;
	struct iwn_dma_info	cmd_dma;
	struct iwn_tx_desc	*desc;
	struct iwn_tx_cmd	*cmd;
	struct iwn_tx_data	data[IWN_TX_RING_COUNT];
	int			qid;
	int			queued;
	int			cur;
};

#define IWN_RBUF_COUNT	(IWN_RX_RING_COUNT + 32)

struct iwn_softc;

struct iwn_rbuf {
	struct iwn_softc	*sc;
	caddr_t			vaddr;
	bus_addr_t		paddr;
	SLIST_ENTRY(iwn_rbuf)	next;
};

struct iwn_rx_data {
	struct mbuf	*m;
};

struct iwn_rx_ring {
	struct iwn_dma_info	desc_dma;
	struct iwn_dma_info	buf_dma;
	uint32_t		*desc;
	struct iwn_rx_data	data[IWN_RX_RING_COUNT];
	struct iwn_rbuf		rbuf[IWN_RBUF_COUNT];
	SLIST_HEAD(, iwn_rbuf)	freelist;
	int			cur;
};

struct iwn_node {
	struct	ieee80211_node		ni;	/* must be the first */
	struct	ieee80211_amrr_node	amn;
};

struct iwn_calib_state {
	uint8_t		state;
#define IWN_CALIB_STATE_INIT	0
#define IWN_CALIB_STATE_ASSOC	1
#define IWN_CALIB_STATE_RUN	2

	u_int		nbeacons;
	uint32_t	noise[3];
	uint32_t	rssi[3];
	uint32_t	corr_ofdm_x1;
	uint32_t	corr_ofdm_mrc_x1;
	uint32_t	corr_ofdm_x4;
	uint32_t	corr_ofdm_mrc_x4;
	uint32_t	corr_cck_x4;
	uint32_t	corr_cck_mrc_x4;
	uint32_t	bad_plcp_ofdm;
	uint32_t	fa_ofdm;
	uint32_t	bad_plcp_cck;
	uint32_t	fa_cck;
	uint32_t	low_fa;
	uint8_t		cck_state;
#define IWN_CCK_STATE_INIT	0
#define IWN_CCK_STATE_LOFA	1
#define IWN_CCK_STATE_HIFA	2

	uint8_t		noise_samples[20];
	u_int		cur_noise_sample;
	uint8_t		noise_ref;
	uint32_t	energy_samples[10];
	u_int		cur_energy_sample;
	uint32_t	energy_cck;
};

struct iwn_softc {
	struct device		sc_dev;

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

	struct ieee80211_amrr	amrr;

	bus_dma_tag_t		sc_dmat;

	/* shared area */
	struct iwn_dma_info	shared_dma;
	struct iwn_shared	*shared;

	/* "keep warm" page */
	struct iwn_dma_info	kw_dma;

	/* firmware DMA transfer */
	struct iwn_dma_info	fw_dma;

	/* rings */
	struct iwn_tx_ring	txq[IWN_NTXQUEUES];
	struct iwn_rx_ring	rxq;

	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 ksensordev	sensordev;
	struct ksensor		sensor;
	struct timeout		calib_to;
	int			calib_cnt;
	struct iwn_calib_state	calib;

	struct iwn_rx_stat	last_rx_stat;
	int			last_rx_valid;
	struct iwn_ucode_info	ucode_info;
	struct iwn_config	config;
	uint32_t		rawtemp;
	int			temp;
	int			noise;
	uint8_t			antmsk;

	struct iwn_eeprom_band	bands[IWN_NBANDS];
	int16_t			eeprom_voltage;
	int8_t			maxpwr2GHz;
	int8_t			maxpwr5GHz;
	int8_t			maxpwr[IEEE80211_CHAN_MAX];

	int			sc_tx_timer;
	void			*powerhook;

#if NBPFILTER > 0
	caddr_t			sc_drvbpf;

	union {
		struct iwn_rx_radiotap_header th;
		uint8_t	pad[IEEE80211_RADIOTAP_HDRLEN];
	} sc_rxtapu;
#define sc_rxtap	sc_rxtapu.th
	int			sc_rxtap_len;

	union {
		struct iwn_tx_radiotap_header th;
		uint8_t	pad[IEEE80211_RADIOTAP_HDRLEN];
	} sc_txtapu;
#define sc_txtap	sc_txtapu.th
	int			sc_txtap_len;
#endif
};