328 lines
9.0 KiB
C
328 lines
9.0 KiB
C
|
/* 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, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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 */
|