| /* 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" |
| #include "zd_ieee80211.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; |
| } __attribute__((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_MULTICAST 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; |
| } __attribute__((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; |
| } __attribute__((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 |
| |
| enum mac_flags { |
| MAC_FIXED_CHANNEL = 0x01, |
| }; |
| |
| struct housekeeping { |
| struct delayed_work link_led_work; |
| }; |
| |
| /** |
| * struct zd_tx_skb_control_block - control block for tx skbuffs |
| * @control: &struct ieee80211_tx_control pointer |
| * @context: context pointer |
| * |
| * This structure is used to fill the cb field in an &sk_buff to transmit. |
| * The control field is NULL, if there is no requirement from the mac80211 |
| * stack to report about the packet ACK. This is the case if the flag |
| * IEEE80211_TXCTL_NO_ACK is not set in &struct ieee80211_tx_control. |
| */ |
| struct zd_tx_skb_control_block { |
| struct ieee80211_tx_control *control; |
| struct ieee80211_hw *hw; |
| void *context; |
| }; |
| |
| #define ZD_MAC_STATS_BUFFER_SIZE 16 |
| |
| #define ZD_MAC_MAX_ACK_WAITERS 10 |
| |
| struct zd_mac { |
| struct zd_chip chip; |
| spinlock_t lock; |
| struct ieee80211_hw *hw; |
| struct housekeeping housekeeping; |
| struct work_struct set_multicast_hash_work; |
| struct work_struct set_rts_cts_work; |
| struct work_struct set_rx_filter_work; |
| struct zd_mc_hash multicast_hash; |
| u8 regdomain; |
| u8 default_regdomain; |
| int type; |
| int associated; |
| struct sk_buff_head ack_wait_queue; |
| struct ieee80211_channel channels[14]; |
| struct ieee80211_rate rates[12]; |
| struct ieee80211_hw_mode modes[2]; |
| |
| /* Short preamble (used for RTS/CTS) */ |
| unsigned int short_preamble:1; |
| |
| /* flags to indicate update in progress */ |
| unsigned int updating_rts_rate: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; |
| }; |
| |
| 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 ieee80211_hw *hw); |
| void zd_mac_tx_to_dev(struct sk_buff *skb, int error); |
| |
| #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 */ |