[deliverable/linux.git] / drivers / net / wireless / zd1211rw / zd_mac.h

/* ZD1211 USB-WLAN driver for Linux
 *
 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _ZD_MAC_H
#define _ZD_MAC_H

#include <linux/kernel.h>
#include <net/mac80211.h>

#include "zd_chip.h"

struct zd_ctrlset {
	u8     modulation;
	__le16 tx_length;
	u8     control;
	/* stores only the difference to tx_length on ZD1211B */
	__le16 packet_length;
	__le16 current_length;
	u8     service;
	__le16  next_frame_length;
} __packed;

#define ZD_CS_RESERVED_SIZE	25

/* The field modulation of struct zd_ctrlset controls the bit rate, the use
 * of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or
 * 802.11g in OFDM mode.
 *
 * The term zd-rate is used for the combination of the modulation type flag
 * and the "pure" rate value.
 */
#define ZD_PURE_RATE_MASK       0x0f
#define ZD_MODULATION_TYPE_MASK 0x10
#define ZD_RATE_MASK            (ZD_PURE_RATE_MASK|ZD_MODULATION_TYPE_MASK)
#define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK)
#define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK)
#define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK)

/* The two possible modulation types. Notify that 802.11b doesn't use the CCK
 * codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain
 * consistent with uses the term at other places.
 */
#define ZD_CCK                  0x00
#define ZD_OFDM                 0x10

/* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates.
 * For OFDM the PLCP rate encodings are used. We combine these "pure" rates
 * with the modulation type flag and call the resulting values zd-rates.
 */
#define ZD_CCK_RATE_1M          (ZD_CCK|0x00)
#define ZD_CCK_RATE_2M          (ZD_CCK|0x01)
#define ZD_CCK_RATE_5_5M        (ZD_CCK|0x02)
#define ZD_CCK_RATE_11M         (ZD_CCK|0x03)
#define ZD_OFDM_RATE_6M         (ZD_OFDM|ZD_OFDM_PLCP_RATE_6M)
#define ZD_OFDM_RATE_9M         (ZD_OFDM|ZD_OFDM_PLCP_RATE_9M)
#define ZD_OFDM_RATE_12M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_12M)
#define ZD_OFDM_RATE_18M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_18M)
#define ZD_OFDM_RATE_24M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_24M)
#define ZD_OFDM_RATE_36M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_36M)
#define ZD_OFDM_RATE_48M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_48M)
#define ZD_OFDM_RATE_54M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_54M)

/* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK
 * mode or the 802.11a/802.11g selection in OFDM mode.
 */
#define ZD_CCK_PREA_LONG        0x00
#define ZD_CCK_PREA_SHORT       0x20
#define ZD_OFDM_MODE_11G        0x00
#define ZD_OFDM_MODE_11A        0x20

/* zd_ctrlset control field */
#define ZD_CS_NEED_RANDOM_BACKOFF	0x01
#define ZD_CS_NO_ACK			0x02

#define ZD_CS_FRAME_TYPE_MASK		0x0c
#define ZD_CS_DATA_FRAME		0x00
#define ZD_CS_PS_POLL_FRAME		0x04
#define ZD_CS_MANAGEMENT_FRAME		0x08
#define ZD_CS_NO_SEQUENCE_CTL_FRAME	0x0c

#define ZD_CS_WAKE_DESTINATION		0x10
#define ZD_CS_RTS			0x20
#define ZD_CS_ENCRYPT			0x40
#define ZD_CS_SELF_CTS			0x80

/* Incoming frames are prepended by a PLCP header */
#define ZD_PLCP_HEADER_SIZE		5

struct rx_length_info {
	__le16 length[3];
	__le16 tag;
} __packed;

#define RX_LENGTH_INFO_TAG		0x697e

struct rx_status {
	u8 signal_quality_cck;
	/* rssi */
	u8 signal_strength;
	u8 signal_quality_ofdm;
	u8 decryption_type;
	u8 frame_status;
} __packed;

/* rx_status field decryption_type */
#define ZD_RX_NO_WEP	0
#define ZD_RX_WEP64	1
#define ZD_RX_TKIP	2
#define ZD_RX_AES	4
#define ZD_RX_WEP128	5
#define ZD_RX_WEP256	6

/* rx_status field frame_status */
#define ZD_RX_FRAME_MODULATION_MASK	0x01
#define ZD_RX_CCK			0x00
#define ZD_RX_OFDM			0x01

#define ZD_RX_TIMEOUT_ERROR		0x02
#define ZD_RX_FIFO_OVERRUN_ERROR	0x04
#define ZD_RX_DECRYPTION_ERROR		0x08
#define ZD_RX_CRC32_ERROR		0x10
#define ZD_RX_NO_ADDR1_MATCH_ERROR	0x20
#define ZD_RX_CRC16_ERROR		0x40
#define ZD_RX_ERROR			0x80

struct tx_retry_rate {
	int count;	/* number of valid element in rate[] array */
	int rate[10];	/* retry rates, described by an index in zd_rates[] */
};

struct tx_status {
	u8 type;	/* must always be 0x01 : USB_INT_TYPE */
	u8 id;		/* must always be 0xa0 : USB_INT_ID_RETRY_FAILED */
	u8 rate;
	u8 pad;
	u8 mac[ETH_ALEN];
	u8 retry;
	u8 failure;
} __packed;

enum mac_flags {
	MAC_FIXED_CHANNEL = 0x01,
};

struct housekeeping {
	struct delayed_work link_led_work;
};

struct beacon {
	struct delayed_work watchdog_work;
	struct sk_buff *cur_beacon;
	unsigned long last_update;
	u16 interval;
	u8 period;
};

enum zd_device_flags {
	ZD_DEVICE_RUNNING,
};

#define ZD_MAC_STATS_BUFFER_SIZE 16

#define ZD_MAC_MAX_ACK_WAITERS 50

struct zd_mac {
	struct zd_chip chip;
	spinlock_t lock;
	spinlock_t intr_lock;
	struct ieee80211_hw *hw;
	struct ieee80211_vif *vif;
	struct housekeeping housekeeping;
	struct beacon beacon;
	struct work_struct set_rts_cts_work;
	struct work_struct process_intr;
	struct zd_mc_hash multicast_hash;
	u8 intr_buffer[USB_MAX_EP_INT_BUFFER];
	u8 regdomain;
	u8 default_regdomain;
	u8 channel;
	int type;
	int associated;
	unsigned long flags;
	struct sk_buff_head ack_wait_queue;
	struct ieee80211_channel channels[14];
	struct ieee80211_rate rates[12];
	struct ieee80211_supported_band band;

	/* Short preamble (used for RTS/CTS) */
	unsigned int short_preamble:1;

	/* whether to pass frames with CRC errors to stack */
	unsigned int pass_failed_fcs:1;

	/* whether to pass control frames to stack */
	unsigned int pass_ctrl:1;

	/* whether we have received a 802.11 ACK that is pending */
	unsigned int ack_pending:1;

	/* signal strength of the last 802.11 ACK received */
	int ack_signal;
};

#define ZD_REGDOMAIN_FCC	0x10
#define ZD_REGDOMAIN_IC		0x20
#define ZD_REGDOMAIN_ETSI	0x30
#define ZD_REGDOMAIN_SPAIN	0x31
#define ZD_REGDOMAIN_FRANCE	0x32
#define ZD_REGDOMAIN_JAPAN_2	0x40
#define ZD_REGDOMAIN_JAPAN	0x41
#define ZD_REGDOMAIN_JAPAN_3	0x49

enum {
	MIN_CHANNEL24 = 1,
	MAX_CHANNEL24 = 14,
};

#define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80

struct ofdm_plcp_header {
	u8 prefix[3];
	__le16 service;
} __packed;

static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header)
{
	return header->prefix[0] & 0xf;
}

/* The following defines give the encoding of the 4-bit rate field in the
 * OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to
 * define the zd-rate values for OFDM.
 *
 * See the struct zd_ctrlset definition in zd_mac.h.
 */
#define ZD_OFDM_PLCP_RATE_6M	0xb
#define ZD_OFDM_PLCP_RATE_9M	0xf
#define ZD_OFDM_PLCP_RATE_12M	0xa
#define ZD_OFDM_PLCP_RATE_18M	0xe
#define ZD_OFDM_PLCP_RATE_24M	0x9
#define ZD_OFDM_PLCP_RATE_36M	0xd
#define ZD_OFDM_PLCP_RATE_48M	0x8
#define ZD_OFDM_PLCP_RATE_54M	0xc

struct cck_plcp_header {
	u8 signal;
	u8 service;
	__le16 length;
	__le16 crc16;
} __packed;

static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header)
{
	return header->signal;
}

/* These defines give the encodings of the signal field in the 802.11b PLCP
 * header. The signal field gives the bit rate of the following packet. Even
 * if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s
 * rate to stay consistent with Zydas and our use of the term.
 *
 * Notify that these values are *not* used in the zd-rates.
 */
#define ZD_CCK_PLCP_SIGNAL_1M	0x0a
#define ZD_CCK_PLCP_SIGNAL_2M	0x14
#define ZD_CCK_PLCP_SIGNAL_5M5	0x37
#define ZD_CCK_PLCP_SIGNAL_11M	0x6e

static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw)
{
	return hw->priv;
}

static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
{
	return container_of(chip, struct zd_mac, chip);
}

static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
{
	return zd_chip_to_mac(zd_usb_to_chip(usb));
}

static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac)
{
	return mac->hw->wiphy->perm_addr;
}

#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))

struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf);
void zd_mac_clear(struct zd_mac *mac);

int zd_mac_preinit_hw(struct ieee80211_hw *hw);
int zd_mac_init_hw(struct ieee80211_hw *hw);

int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length);
void zd_mac_tx_failed(struct urb *urb);
void zd_mac_tx_to_dev(struct sk_buff *skb, int error);

int zd_op_start(struct ieee80211_hw *hw);
void zd_op_stop(struct ieee80211_hw *hw);
int zd_restore_settings(struct zd_mac *mac);

#ifdef DEBUG
void zd_dump_rx_status(const struct rx_status *status);
#else
#define zd_dump_rx_status(status)
#endif /* DEBUG */

#endif /* _ZD_MAC_H */
Commit	Line	Data
66bb42fd DD	1	/* ZD1211 USB-WLAN driver for Linux
	2	*
	3	* Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
	4	* Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
e85d0918 DD	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21	#ifndef _ZD_MAC_H
	22	#define _ZD_MAC_H
	23
e85d0918	24	#include <linux/kernel.h>
459c51ad	25	#include <net/mac80211.h>
e85d0918 DD	26
e85d0918 DD	27	#include "zd_chip.h"
e85d0918 DD	28
	29	struct zd_ctrlset {
	30	u8 modulation;
	31	__le16 tx_length;
	32	u8 control;
	33	/* stores only the difference to tx_length on ZD1211B */
	34	__le16 packet_length;
	35	__le16 current_length;
	36	u8 service;
	37	__le16 next_frame_length;
ba2d3587	38	} __packed;
e85d0918 DD	39
	40	#define ZD_CS_RESERVED_SIZE 25
	41
64f222cc UK	42	/* The field modulation of struct zd_ctrlset controls the bit rate, the use
	43	* of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or
	44	* 802.11g in OFDM mode.
	45	*
	46	* The term zd-rate is used for the combination of the modulation type flag
	47	* and the "pure" rate value.
e85d0918	48	*/
64f222cc UK	49	#define ZD_PURE_RATE_MASK 0x0f
	50	#define ZD_MODULATION_TYPE_MASK 0x10
	51	#define ZD_RATE_MASK (ZD_PURE_RATE_MASK\|ZD_MODULATION_TYPE_MASK)
	52	#define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK)
	53	#define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK)
	54	#define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK)
	55
	56	/* The two possible modulation types. Notify that 802.11b doesn't use the CCK
	57	* codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain
	58	* consistent with uses the term at other places.
459c51ad	59	*/
64f222cc UK	60	#define ZD_CCK 0x00
	61	#define ZD_OFDM 0x10
	62
	63	/* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates.
	64	* For OFDM the PLCP rate encodings are used. We combine these "pure" rates
	65	* with the modulation type flag and call the resulting values zd-rates.
	66	*/
	67	#define ZD_CCK_RATE_1M (ZD_CCK\|0x00)
	68	#define ZD_CCK_RATE_2M (ZD_CCK\|0x01)
	69	#define ZD_CCK_RATE_5_5M (ZD_CCK\|0x02)
	70	#define ZD_CCK_RATE_11M (ZD_CCK\|0x03)
	71	#define ZD_OFDM_RATE_6M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_6M)
	72	#define ZD_OFDM_RATE_9M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_9M)
	73	#define ZD_OFDM_RATE_12M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_12M)
	74	#define ZD_OFDM_RATE_18M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_18M)
	75	#define ZD_OFDM_RATE_24M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_24M)
	76	#define ZD_OFDM_RATE_36M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_36M)
	77	#define ZD_OFDM_RATE_48M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_48M)
	78	#define ZD_OFDM_RATE_54M (ZD_OFDM\|ZD_OFDM_PLCP_RATE_54M)
	79
	80	/* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK
	81	* mode or the 802.11a/802.11g selection in OFDM mode.
	82	*/
	83	#define ZD_CCK_PREA_LONG 0x00
	84	#define ZD_CCK_PREA_SHORT 0x20
	85	#define ZD_OFDM_MODE_11G 0x00
	86	#define ZD_OFDM_MODE_11A 0x20
e85d0918 DD	87
	88	/* zd_ctrlset control field */
	89	#define ZD_CS_NEED_RANDOM_BACKOFF 0x01
13bdcd90	90	#define ZD_CS_NO_ACK 0x02
e85d0918 DD	91
	92	#define ZD_CS_FRAME_TYPE_MASK 0x0c
	93	#define ZD_CS_DATA_FRAME 0x00
	94	#define ZD_CS_PS_POLL_FRAME 0x04
	95	#define ZD_CS_MANAGEMENT_FRAME 0x08
	96	#define ZD_CS_NO_SEQUENCE_CTL_FRAME 0x0c
	97
	98	#define ZD_CS_WAKE_DESTINATION 0x10
	99	#define ZD_CS_RTS 0x20
	100	#define ZD_CS_ENCRYPT 0x40
	101	#define ZD_CS_SELF_CTS 0x80
	102
	103	/* Incoming frames are prepended by a PLCP header */
	104	#define ZD_PLCP_HEADER_SIZE 5
	105
	106	struct rx_length_info {
	107	__le16 length[3];
	108	__le16 tag;
ba2d3587	109	} __packed;
e85d0918 DD	110
	111	#define RX_LENGTH_INFO_TAG 0x697e
	112
	113	struct rx_status {
db888aed	114	u8 signal_quality_cck;
e85d0918 DD	115	/* rssi */
e85d0918 DD	116	u8 signal_strength;
e85d0918 DD	117	u8 signal_quality_ofdm;
	118	u8 decryption_type;
	119	u8 frame_status;
ba2d3587	120	} __packed;
e85d0918 DD	121
	122	/* rx_status field decryption_type */
	123	#define ZD_RX_NO_WEP 0
	124	#define ZD_RX_WEP64 1
	125	#define ZD_RX_TKIP 2
	126	#define ZD_RX_AES 4
	127	#define ZD_RX_WEP128 5
	128	#define ZD_RX_WEP256 6
	129
	130	/* rx_status field frame_status */
	131	#define ZD_RX_FRAME_MODULATION_MASK 0x01
	132	#define ZD_RX_CCK 0x00
	133	#define ZD_RX_OFDM 0x01
	134
	135	#define ZD_RX_TIMEOUT_ERROR 0x02
	136	#define ZD_RX_FIFO_OVERRUN_ERROR 0x04
	137	#define ZD_RX_DECRYPTION_ERROR 0x08
	138	#define ZD_RX_CRC32_ERROR 0x10
	139	#define ZD_RX_NO_ADDR1_MATCH_ERROR 0x20
	140	#define ZD_RX_CRC16_ERROR 0x40
	141	#define ZD_RX_ERROR 0x80
	142
7f4013f0 BP	143	struct tx_retry_rate {
	144	int count; /* number of valid element in rate[] array */
	145	int rate[10]; /* retry rates, described by an index in zd_rates[] */
	146	};
	147
	148	struct tx_status {
	149	u8 type; /* must always be 0x01 : USB_INT_TYPE */
	150	u8 id; /* must always be 0xa0 : USB_INT_ID_RETRY_FAILED */
	151	u8 rate;
	152	u8 pad;
	153	u8 mac[ETH_ALEN];
	154	u8 retry;
	155	u8 failure;
ba2d3587	156	} __packed;
7f4013f0	157
459c51ad DD	158	enum mac_flags {
	159	MAC_FIXED_CHANNEL = 0x01,
	160	};
	161
583afd1e	162	struct housekeeping {
c4028958	163	struct delayed_work link_led_work;
583afd1e UK	164	};
583afd1e UK	165
9be23256 JK	166	struct beacon {
9be23256 JK	167	struct delayed_work watchdog_work;
f762d8c3	168	struct sk_buff *cur_beacon;
9be23256 JK	169	unsigned long last_update;
	170	u16 interval;
	171	u8 period;
	172	};
	173
	174	enum zd_device_flags {
	175	ZD_DEVICE_RUNNING,
	176	};
	177
db888aed UK	178	#define ZD_MAC_STATS_BUFFER_SIZE 16
db888aed UK	179
7f4013f0	180	#define ZD_MAC_MAX_ACK_WAITERS 50
459c51ad	181
e85d0918	182	struct zd_mac {
e85d0918 DD	183	struct zd_chip chip;
e85d0918 DD	184	spinlock_t lock;
72e77a8a	185	spinlock_t intr_lock;
459c51ad	186	struct ieee80211_hw *hw;
c2fadcb3	187	struct ieee80211_vif *vif;
583afd1e	188	struct housekeeping housekeeping;
9be23256	189	struct beacon beacon;
459c51ad	190	struct work_struct set_rts_cts_work;
72e77a8a	191	struct work_struct process_intr;
9cdac965	192	struct zd_mc_hash multicast_hash;
72e77a8a	193	u8 intr_buffer[USB_MAX_EP_INT_BUFFER];
e85d0918 DD	194	u8 regdomain;
e85d0918 DD	195	u8 default_regdomain;
212e1a5b	196	u8 channel;
459c51ad DD	197	int type;
459c51ad DD	198	int associated;
9be23256	199	unsigned long flags;
459c51ad DD	200	struct sk_buff_head ack_wait_queue;
	201	struct ieee80211_channel channels[14];
	202	struct ieee80211_rate rates[12];
8318d78a	203	struct ieee80211_supported_band band;
b1382ede DD	204
	205	/* Short preamble (used for RTS/CTS) */
	206	unsigned int short_preamble:1;
	207
459c51ad DD	208	/* whether to pass frames with CRC errors to stack */
459c51ad DD	209	unsigned int pass_failed_fcs:1;
e85d0918	210
459c51ad DD	211	/* whether to pass control frames to stack */
459c51ad DD	212	unsigned int pass_ctrl:1;
7f4013f0 BP	213
	214	/* whether we have received a 802.11 ACK that is pending */
	215	unsigned int ack_pending:1;
	216
	217	/* signal strength of the last 802.11 ACK received */
	218	int ack_signal;
459c51ad DD	219	};
459c51ad DD	220
e83a1070 LR	221	#define ZD_REGDOMAIN_FCC 0x10
	222	#define ZD_REGDOMAIN_IC 0x20
	223	#define ZD_REGDOMAIN_ETSI 0x30
	224	#define ZD_REGDOMAIN_SPAIN 0x31
	225	#define ZD_REGDOMAIN_FRANCE 0x32
3d3b33bd	226	#define ZD_REGDOMAIN_JAPAN_2 0x40
e83a1070	227	#define ZD_REGDOMAIN_JAPAN 0x41
3d3b33bd	228	#define ZD_REGDOMAIN_JAPAN_3 0x49
e83a1070 LR	229
	230	enum {
	231	MIN_CHANNEL24 = 1,
	232	MAX_CHANNEL24 = 14,
	233	};
	234
	235	#define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80
	236
	237	struct ofdm_plcp_header {
	238	u8 prefix[3];
	239	__le16 service;
ba2d3587	240	} __packed;
e83a1070 LR	241
	242	static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header)
	243	{
	244	return header->prefix[0] & 0xf;
	245	}
	246
	247	/* The following defines give the encoding of the 4-bit rate field in the
	248	* OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to
	249	* define the zd-rate values for OFDM.
	250	*
	251	* See the struct zd_ctrlset definition in zd_mac.h.
	252	*/
	253	#define ZD_OFDM_PLCP_RATE_6M 0xb
	254	#define ZD_OFDM_PLCP_RATE_9M 0xf
	255	#define ZD_OFDM_PLCP_RATE_12M 0xa
	256	#define ZD_OFDM_PLCP_RATE_18M 0xe
	257	#define ZD_OFDM_PLCP_RATE_24M 0x9
	258	#define ZD_OFDM_PLCP_RATE_36M 0xd
	259	#define ZD_OFDM_PLCP_RATE_48M 0x8
	260	#define ZD_OFDM_PLCP_RATE_54M 0xc
	261
	262	struct cck_plcp_header {
	263	u8 signal;
	264	u8 service;
	265	__le16 length;
	266	__le16 crc16;
ba2d3587	267	} __packed;
e83a1070 LR	268
	269	static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header)
	270	{
	271	return header->signal;
	272	}
	273
	274	/* These defines give the encodings of the signal field in the 802.11b PLCP
	275	* header. The signal field gives the bit rate of the following packet. Even
	276	* if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s
	277	* rate to stay consistent with Zydas and our use of the term.
	278	*
	279	* Notify that these values are not used in the zd-rates.
	280	*/
	281	#define ZD_CCK_PLCP_SIGNAL_1M 0x0a
	282	#define ZD_CCK_PLCP_SIGNAL_2M 0x14
	283	#define ZD_CCK_PLCP_SIGNAL_5M5 0x37
	284	#define ZD_CCK_PLCP_SIGNAL_11M 0x6e
	285
459c51ad	286	static inline struct zd_mac zd_hw_mac(struct ieee80211_hw hw)
e85d0918	287	{
459c51ad	288	return hw->priv;
e85d0918 DD	289	}
	290
	291	static inline struct zd_mac zd_chip_to_mac(struct zd_chip chip)
	292	{
	293	return container_of(chip, struct zd_mac, chip);
	294	}
	295
	296	static inline struct zd_mac zd_usb_to_mac(struct zd_usb usb)
	297	{
	298	return zd_chip_to_mac(zd_usb_to_chip(usb));
	299	}
	300
459c51ad DD	301	static inline u8 zd_mac_get_perm_addr(struct zd_mac mac)
	302	{
	303	return mac->hw->wiphy->perm_addr;
	304	}
	305
e85d0918 DD	306	#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
e85d0918 DD	307
459c51ad	308	struct ieee80211_hw zd_mac_alloc_hw(struct usb_interface intf);
e85d0918 DD	309	void zd_mac_clear(struct zd_mac *mac);
e85d0918 DD	310
459c51ad DD	311	int zd_mac_preinit_hw(struct ieee80211_hw *hw);
459c51ad DD	312	int zd_mac_init_hw(struct ieee80211_hw *hw);
e85d0918	313
459c51ad	314	int zd_mac_rx(struct ieee80211_hw hw, const u8 buffer, unsigned int length);
7f4013f0	315	void zd_mac_tx_failed(struct urb *urb);
459c51ad	316	void zd_mac_tx_to_dev(struct sk_buff *skb, int error);
e85d0918	317
a0fd751f JK	318	int zd_op_start(struct ieee80211_hw *hw);
a0fd751f JK	319	void zd_op_stop(struct ieee80211_hw *hw);
212e1a5b JK	320	int zd_restore_settings(struct zd_mac *mac);
212e1a5b JK	321
e85d0918 DD	322	#ifdef DEBUG
	323	void zd_dump_rx_status(const struct rx_status *status);
	324	#else
	325	#define zd_dump_rx_status(status)
	326	#endif /* DEBUG */
	327
	328	#endif /* _ZD_MAC_H */