/*	$OpenBSD: if_urtwreg.h,v 1.13 2010/08/27 17:08:01 jsg Exp $	*/

/*-
 * Copyright (c) 2009 Martynas Venckus <martynas@openbsd.org>
 * Copyright (c) 2008 Weongyo Jeong <weongyo@FreeBSD.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	URTW_CONFIG_NO			1
#define	URTW_IFACE_INDEX		0

/*
 * Known hardware revisions.
 */
#define	URTW_HWREV_8187			0x01
#define	URTW_HWREV_8187_B		0x02
#define	URTW_HWREV_8187_D		0x04
#define	URTW_HWREV_8187B		0x08
#define	URTW_HWREV_8187B_B		0x10
#define	URTW_HWREV_8187B_D		0x20
#define	URTW_HWREV_8187B_E		0x40

/*
 * Registers specific to RTL8187 and RTL8187B.
 */
#define	URTW_MAC0			0x0000		/* 1 byte */
#define	URTW_MAC1			0x0001		/* 1 byte */
#define	URTW_MAC2			0x0002		/* 1 byte */
#define	URTW_MAC3			0x0003		/* 1 byte */
#define	URTW_MAC4			0x0004		/* 1 byte */
#define	URTW_MAC5			0x0005		/* 1 byte */
#define	URTW_8187_BRSR			0x002c		/* 2 byte */
#define	URTW_BRSR_MBR_8185		(0x0fff)
#define	URTW_8187B_EIFS			0x002d		/* 1 byte */
#define	URTW_BSSID			0x002e		/* 6 byte */
#define	URTW_RESP_RATE			0x0034		/* 1 byte */
#define	URTW_8187B_BRSR			0x0034		/* 2 byte */
#define	URTW_RESP_MAX_RATE_SHIFT	(4)
#define	URTW_RESP_MIN_RATE_SHIFT	(0)
#define	URTW_8187_EIFS			0x0035		/* 1 byte */
#define	URTW_INTR_MASK			0x003c		/* 2 byte */
#define	URTW_CMD			0x0037		/* 1 byte */
#define	URTW_CMD_TX_ENABLE		(0x4)
#define	URTW_CMD_RX_ENABLE		(0x8)
#define	URTW_CMD_RST			(0x10)
#define	URTW_TX_CONF			0x0040		/* 4 byte */
#define	URTW_TX_HWREV_MASK		(7 << 25)
#define	URTW_TX_HWREV_8187_D		(5 << 25)
#define	URTW_TX_HWREV_8187B_D		(6 << 25)
#define	URTW_TX_DURPROCMODE		(1 << 30)
#define	URTW_TX_DISREQQSIZE		(1 << 28)
#define	URTW_TX_SHORTRETRY		(7 << 8)
#define	URTW_TX_LONGRETRY		(7 << 0)
#define	URTW_TX_LOOPBACK_SHIFT		(17)
#define	URTW_TX_LOOPBACK_NONE		(0 << URTW_TX_LOOPBACK_SHIFT)
#define	URTW_TX_LOOPBACK_MAC		(1 << URTW_TX_LOOPBACK_SHIFT)
#define	URTW_TX_LOOPBACK_BASEBAND	(2 << URTW_TX_LOOPBACK_SHIFT)
#define	URTW_TX_LOOPBACK_CONTINUE	(3 << URTW_TX_LOOPBACK_SHIFT)
#define	URTW_TX_LOOPBACK_MASK		(0x60000)
#define	URTW_TX_DPRETRY_MASK		(0xff00)
#define	URTW_TX_RTSRETRY_MASK		(0xff)
#define	URTW_TX_DPRETRY_SHIFT		(0)
#define	URTW_TX_RTSRETRY_SHIFT		(8)
#define	URTW_TX_NOCRC			(0x10000)
#define	URTW_TX_MXDMA_MASK		(0xe00000)
#define	URTW_TX_MXDMA_1024		(6 << URTW_TX_MXDMA_SHIFT)
#define	URTW_TX_MXDMA_2048		(7 << URTW_TX_MXDMA_SHIFT)
#define	URTW_TX_MXDMA_SHIFT		(21)
#define	URTW_TX_CWMIN			(1 << 31)
#define	URTW_TX_DISCW			(1 << 20)
#define	URTW_TX_SWPLCPLEN		(1 << 24)
#define	URTW_TX_NOICV			(0x80000)
#define	URTW_RX				0x0044		/* 4 byte */
#define	URTW_RX_9356SEL			(1 << 6)
#define	URTW_RX_FILTER_MASK			\
	(URTW_RX_FILTER_ALLMAC | URTW_RX_FILTER_NICMAC | URTW_RX_FILTER_MCAST | \
	URTW_RX_FILTER_BCAST | URTW_RX_FILTER_CRCERR | URTW_RX_FILTER_ICVERR | \
	URTW_RX_FILTER_DATA | URTW_RX_FILTER_CTL | URTW_RX_FILTER_MNG |	\
	(1 << 21) |							\
	URTW_RX_FILTER_PWR | URTW_RX_CHECK_BSSID)
#define	URTW_RX_FILTER_ALLMAC		(0x00000001)
#define	URTW_RX_FILTER_NICMAC		(0x00000002)
#define	URTW_RX_FILTER_MCAST		(0x00000004)
#define	URTW_RX_FILTER_BCAST		(0x00000008)
#define	URTW_RX_FILTER_CRCERR		(0x00000020)
#define	URTW_RX_FILTER_ICVERR		(0x00001000)
#define	URTW_RX_FILTER_DATA		(0x00040000)
#define	URTW_RX_FILTER_CTL		(0x00080000)
#define	URTW_RX_FILTER_MNG		(0x00100000)
#define	URTW_RX_FILTER_PWR		(0x00400000)
#define	URTW_RX_CHECK_BSSID		(0x00800000)
#define	URTW_RX_FIFO_THRESHOLD_MASK	((1 << 13) | (1 << 14) | (1 << 15))
#define	URTW_RX_FIFO_THRESHOLD_SHIFT	(13)
#define	URTW_RX_FIFO_THRESHOLD_128	(3)
#define	URTW_RX_FIFO_THRESHOLD_256	(4)
#define	URTW_RX_FIFO_THRESHOLD_512	(5)
#define	URTW_RX_FIFO_THRESHOLD_1024	(6)
#define	URTW_RX_FIFO_THRESHOLD_NONE	(7 << URTW_RX_FIFO_THRESHOLD_SHIFT)
#define	URTW_RX_AUTORESETPHY		(1 << URTW_RX_AUTORESETPHY_SHIFT)
#define	URTW_RX_AUTORESETPHY_SHIFT	(28)
#define	URTW_MAX_RX_DMA_MASK		((1<<8) | (1<<9) | (1<<10))
#define	URTW_MAX_RX_DMA_2048		(7 << URTW_MAX_RX_DMA_SHIFT)
#define	URTW_MAX_RX_DMA_1024		(6)
#define	URTW_MAX_RX_DMA_SHIFT		(10)
#define	URTW_RCR_ONLYERLPKT		(1 << 31)
#define	URTW_INT_TIMEOUT		0x0048		/* 4 byte */
#define	URTW_EPROM_CMD			0x0050		/* 1 byte */
#define	URTW_EPROM_CMD_NORMAL		(0x0)
#define	URTW_EPROM_CMD_NORMAL_MODE				\
	(URTW_EPROM_CMD_NORMAL << URTW_EPROM_CMD_SHIFT)
#define	URTW_EPROM_CMD_LOAD		(0x1)
#define	URTW_EPROM_CMD_PROGRAM		(0x2)
#define	URTW_EPROM_CMD_PROGRAM_MODE				\
	(URTW_EPROM_CMD_PROGRAM << URTW_EPROM_CMD_SHIFT)
#define	URTW_EPROM_CMD_CONFIG		(0x3)
#define	URTW_EPROM_CMD_SHIFT		(6)
#define	URTW_EPROM_CMD_MASK		((1 << 7) | (1 << 6))
#define	URTW_EPROM_READBIT		(0x1)
#define	URTW_EPROM_WRITEBIT		(0x2)
#define	URTW_EPROM_CK			(0x4)
#define	URTW_EPROM_CS			(0x8)
#define	URTW_CONFIG1			0x0052		/* 1 byte */
#define	URTW_CONFIG2			0x0053		/* 1 byte */
#define	URTW_ANAPARAM			0x0054		/* 4 byte */
#define	URTW_8187_8225_ANAPARAM_ON	(0xa0000a59)
#define	URTW_8187B_8225_ANAPARAM_ON	(0x45090658)
#define	URTW_MSR			0x0058		/* 1 byte */
#define	URTW_MSR_LINK_MASK		((1 << 2) | (1 << 3))
#define	URTW_MSR_LINK_SHIFT		(2)
#define	URTW_MSR_LINK_NONE		(0 << URTW_MSR_LINK_SHIFT)
#define	URTW_MSR_LINK_ADHOC		(1 << URTW_MSR_LINK_SHIFT)
#define	URTW_MSR_LINK_STA		(2 << URTW_MSR_LINK_SHIFT)
#define	URTW_MSR_LINK_HOSTAP		(3 << URTW_MSR_LINK_SHIFT)
#define	URTW_MSR_LINK_ENEDCA		(4 << URTW_MSR_LINK_SHIFT)
#define	URTW_CONFIG3			0x0059		/* 1 byte */
#define	URTW_CONFIG3_ANAPARAM_WRITE	(0x40)
#define	URTW_CONFIG3_ANAPARAM_W_SHIFT	(6)
#define	URTW_CONFIG3_GNT_SELECT		(0x80)
#define	URTW_PSR			0x005e		/* 1 byte */
#define	URTW_ANAPARAM2			0x0060		/* 4 byte */
#define	URTW_8187_8225_ANAPARAM2_ON	(0x860c7312)
#define	URTW_8187B_8225_ANAPARAM2_ON	(0x727f3f52)
#define	URTW_BEACON_INTERVAL		0x0070		/* 2 byte */
#define	URTW_ATIM_WND			0x0072		/* 2 byte */
#define	URTW_BEACON_INTERVAL_TIME	0x0074		/* 2 byte */
#define	URTW_ATIM_TR_ITV		0x0076		/* 2 byte */
#define	URTW_RF_PINS_OUTPUT		0x0080		/* 2 byte */
#define	URTW_BB_HOST_BANG_CLK		(1 << 1)
#define	URTW_BB_HOST_BANG_EN		(1 << 2)
#define	URTW_BB_HOST_BANG_RW		(1 << 3)
#define	URTW_RF_PINS_ENABLE		0x0082		/* 2 byte */
#define	URTW_RF_PINS_SELECT		0x0084		/* 2 byte */
#define	URTW_RF_PINS_INPUT		0x0086		/* 2 byte */
#define	URTW_RF_PARA			0x0088		/* 4 byte */
#define	URTW_RF_TIMING			0x008c		/* 4 byte */
#define	URTW_GP_ENABLE			0x0090		/* 1 byte */
#define	URTW_GPIO			0x0091		/* 1 byte */
#define	URTW_HSSI_PARA			0x0094		/* 4 byte */
#define	URTW_TX_AGC_CTL			0x009c		/* 1 byte */
#define	URTW_TX_AGC_CTL_PERPACKET_GAIN	(0x1)
#define	URTW_TX_AGC_CTL_PERPACKET_ANTSEL	(0x2)
#define	URTW_TX_AGC_CTL_FEEDBACK_ANT	(0x4)
#define	URTW_TX_GAIN_CCK		0x009d		/* 1 byte */
#define	URTW_TX_GAIN_OFDM		0x009e		/* 1 byte */
#define	URTW_TX_ANTENNA			0x009f		/* 1 byte */
#define	URTW_WPA_CONFIG			0x00b0		/* 1 byte */
#define	URTW_SIFS			0x00b4		/* 1 byte */
#define	URTW_DIFS			0x00b5		/* 1 byte */
#define	URTW_SLOT			0x00b6		/* 1 byte */
#define	URTW_CW_CONF			0x00bc		/* 1 byte */
#define	URTW_CW_CONF_PERPACKET_RETRY	(0x2)
#define	URTW_CW_CONF_PERPACKET_CW	(0x1)
#define	URTW_CW_VAL			0x00bd		/* 1 byte */
#define	URTW_RATE_FALLBACK		0x00be		/* 1 byte */
#define	URTW_RATE_FALLBACK_ENABLE	(0x80)
#define	URTW_ACM_CONTROL		0x00bf		/* 1 byte */
#define	URTW_8187B_HWREV		0x00e1		/* 1 byte */
#define	URTW_8187B_HWREV_8187B_B	(0x0)
#define	URTW_8187B_HWREV_8187B_D	(0x1)
#define	URTW_8187B_HWREV_8187B_E	(0x2)
#define	URTW_INT_MIG			0x00e2		/* 2 byte */
#define	URTW_TID_AC_MAP			0x00e8		/* 2 byte */
#define	URTW_ANAPARAM3			0x00ee		/* 4 byte */
#define	URTW_8187B_8225_ANAPARAM3_ON	(0x0)
#define	URTW_TALLY_SEL			0x00fc		/* 1 byte */
#define	URTW_AC_VO			0x00f0		/* 1 byte */
#define	URTW_AC_VI			0x00f4		/* 1 byte */
#define	URTW_AC_BE			0x00f8		/* 1 byte */
#define	URTW_AC_BK			0x00fc		/* 1 byte */
#define	URTW_FEMR			0x01d4		/* 2 byte */
#define	URTW_ARFR			0x01e0		/* 2 byte */
#define	URTW_RFSW_CTRL			0x0272		/* 2 byte */

/* for EEPROM */
#define	URTW_EPROM_TXPW_BASE		0x05
#define	URTW_EPROM_RFCHIPID		0x06
#define	URTW_EPROM_RFCHIPID_RTL8225U	(5)
#define	URTW_EPROM_MACADDR		0x07
#define	URTW_EPROM_TXPW0		0x16
#define	URTW_EPROM_TXPW2		0x1b
#define	URTW_EPROM_TXPW1		0x3d
#define	URTW_EPROM_SWREV		0x3f
#define	URTW_EPROM_CID_MASK		(0xff)
#define	URTW_EPROM_CID_RSVD0		(0x00)
#define	URTW_EPROM_CID_RSVD1		(0xff)
#define	URTW_EPROM_CID_ALPHA0		(0x01)
#define	URTW_EPROM_CID_SERCOMM_PS	(0x02)
#define	URTW_EPROM_CID_HW_LED		(0x03)

/* LED */
#define	URTW_CID_DEFAULT		0
#define	URTW_CID_8187_ALPHA0		1
#define	URTW_CID_8187_SERCOMM_PS	2
#define	URTW_CID_8187_HW_LED		3
#define	URTW_SW_LED_MODE0		0
#define	URTW_SW_LED_MODE1		1
#define	URTW_SW_LED_MODE2		2
#define	URTW_SW_LED_MODE3		3
#define	URTW_HW_LED			4
#define	URTW_LED_CTL_POWER_ON		0
#define	URTW_LED_CTL_LINK		2
#define	URTW_LED_CTL_TX			4
#define	URTW_LED_PIN_GPIO0		0
#define	URTW_LED_PIN_LED0		1
#define	URTW_LED_PIN_LED1		2
#define	URTW_LED_UNKNOWN		0
#define	URTW_LED_ON			1
#define	URTW_LED_OFF			2
#define	URTW_LED_BLINK_NORMAL		3
#define	URTW_LED_BLINK_SLOWLY		4
#define	URTW_LED_POWER_ON_BLINK		5
#define	URTW_LED_SCAN_BLINK		6
#define	URTW_LED_NO_LINK_BLINK		7
#define	URTW_LED_BLINK_CM3		8

/* for extra area */
#define	URTW_EPROM_DISABLE		0
#define	URTW_EPROM_ENABLE		1
#define	URTW_EPROM_DELAY		10
#define	URTW_8187_GETREGS_REQ		5
#define	URTW_8187_SETREGS_REQ		5
#define	URTW_8225_RF_MAX_SENS		6
#define	URTW_8225_RF_DEF_SENS		4
#define	URTW_DEFAULT_RTS_RETRY		7
#define	URTW_DEFAULT_TX_RETRY		7
#define	URTW_DEFAULT_RTS_THRESHOLD	2342U

#define	URTW_MAX_CHANNELS		15

struct urtw_tx_data {
	struct urtw_softc	*sc;
	usbd_xfer_handle	xfer;
	uint8_t			*buf;
	struct ieee80211_node	*ni;
};

struct urtw_rx_data {
	struct urtw_softc	*sc;
	usbd_xfer_handle	xfer;
	uint8_t			*buf;
	struct mbuf		*m;
};

/* XXX not correct.. */
#define	URTW_MIN_RXBUFSZ						\
	(sizeof(struct ieee80211_frame_min))

#define	URTW_RX_DATA_LIST_COUNT		1
#define	URTW_TX_DATA_LIST_COUNT		16
#define	URTW_RX_MAXSIZE			0x9c4
#define	URTW_TX_MAXSIZE			0x9c4

struct urtw_rx_radiotap_header {
	struct ieee80211_radiotap_header wr_ihdr;
	uint8_t		wr_flags;
	uint16_t	wr_chan_freq;
	uint16_t	wr_chan_flags;
	int8_t		wr_dbm_antsignal;
} __packed;

#define	URTW_RX_RADIOTAP_PRESENT					\
	((1 << IEEE80211_RADIOTAP_FLAGS) |				\
	 (1 << IEEE80211_RADIOTAP_CHANNEL) |				\
	 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL))

struct urtw_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;
} __packed;

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

struct urtw_rf {
	/* RF methods */
	usbd_status			(*init)(struct urtw_rf *);
	usbd_status			(*set_chan)(struct urtw_rf *, int);
	usbd_status			(*set_sens)(struct urtw_rf *);

	/* RF attributes */
	struct urtw_softc		*rf_sc;
	uint32_t			max_sens;
	uint32_t			sens;
};

struct urtw_softc {
	device_t			sc_dev;
	struct ieee80211com		sc_ic;
	struct ethercom			sc_ec;
#define sc_if	sc_ec.ec_if
	int				(*sc_newstate)(struct ieee80211com *,
					    enum ieee80211_state, int);
	struct urtw_rf			sc_rf;

	bool				sc_dying;

	struct usb_task			sc_task;
	usbd_device_handle		sc_udev;
	usbd_interface_handle		sc_iface;

	enum ieee80211_state		sc_state;
	int				sc_arg;

	uint8_t				sc_hwrev;
	int				sc_flags;
#define	URTW_INIT_ONCE			(1 << 1)
	int				sc_epromtype;
#define	URTW_EEPROM_93C46		0
#define	URTW_EEPROM_93C56		1
	uint8_t				sc_crcmon;
	uint8_t				sc_bssid[IEEE80211_ADDR_LEN];

	/* for LED */
	struct callout			sc_led_ch;
	struct usb_task			sc_ledtask;
	uint8_t				sc_psr;
	uint8_t				sc_strategy;
#define	URTW_LED_GPIO			1
	uint8_t				sc_gpio_ledon;
	uint8_t				sc_gpio_ledinprogress;
	uint8_t				sc_gpio_ledstate;
	uint8_t				sc_gpio_ledpin;
	uint8_t				sc_gpio_blinktime;
	uint8_t				sc_gpio_blinkstate;
	/* RX/TX */
	usbd_pipe_handle		sc_rxpipe;
	usbd_pipe_handle		sc_txpipe_low;
	usbd_pipe_handle		sc_txpipe_normal;
#define	URTW_PRIORITY_LOW		0
#define	URTW_PRIORITY_NORMAL		1
#define	URTW_DATA_TIMEOUT		10000		/* 10 sec */
	struct urtw_rx_data		sc_rx_data[URTW_RX_DATA_LIST_COUNT];
	struct urtw_tx_data		sc_tx_data[URTW_TX_DATA_LIST_COUNT];
	uint32_t			sc_tx_low_queued;
	uint32_t			sc_tx_normal_queued;
	uint32_t			sc_txidx;
	uint8_t				sc_rts_retry;
	uint8_t				sc_tx_retry;
	uint8_t				sc_preamble_mode;
	struct callout			scan_to;
	int				sc_txtimer;
	int				sc_currate;
	/* TX power */
	uint8_t				sc_txpwr_cck[URTW_MAX_CHANNELS];
	uint8_t				sc_txpwr_cck_base;
	uint8_t				sc_txpwr_ofdm[URTW_MAX_CHANNELS];
	uint8_t				sc_txpwr_ofdm_base;

	struct bpf_if *			sc_drvbpf;

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

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

