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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 | |
27 | #include "zd_chip.h" | |
459c51ad | 28 | #include "zd_ieee80211.h" |
e85d0918 DD |
29 | |
30 | struct zd_ctrlset { | |
31 | u8 modulation; | |
32 | __le16 tx_length; | |
33 | u8 control; | |
34 | /* stores only the difference to tx_length on ZD1211B */ | |
35 | __le16 packet_length; | |
36 | __le16 current_length; | |
37 | u8 service; | |
38 | __le16 next_frame_length; | |
39 | } __attribute__((packed)); | |
40 | ||
41 | #define ZD_CS_RESERVED_SIZE 25 | |
42 | ||
64f222cc UK |
43 | /* The field modulation of struct zd_ctrlset controls the bit rate, the use |
44 | * of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or | |
45 | * 802.11g in OFDM mode. | |
46 | * | |
47 | * The term zd-rate is used for the combination of the modulation type flag | |
48 | * and the "pure" rate value. | |
e85d0918 | 49 | */ |
64f222cc UK |
50 | #define ZD_PURE_RATE_MASK 0x0f |
51 | #define ZD_MODULATION_TYPE_MASK 0x10 | |
52 | #define ZD_RATE_MASK (ZD_PURE_RATE_MASK|ZD_MODULATION_TYPE_MASK) | |
53 | #define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK) | |
54 | #define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK) | |
55 | #define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK) | |
56 | ||
57 | /* The two possible modulation types. Notify that 802.11b doesn't use the CCK | |
58 | * codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain | |
59 | * consistent with uses the term at other places. | |
459c51ad | 60 | */ |
64f222cc UK |
61 | #define ZD_CCK 0x00 |
62 | #define ZD_OFDM 0x10 | |
63 | ||
64 | /* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates. | |
65 | * For OFDM the PLCP rate encodings are used. We combine these "pure" rates | |
66 | * with the modulation type flag and call the resulting values zd-rates. | |
67 | */ | |
68 | #define ZD_CCK_RATE_1M (ZD_CCK|0x00) | |
69 | #define ZD_CCK_RATE_2M (ZD_CCK|0x01) | |
70 | #define ZD_CCK_RATE_5_5M (ZD_CCK|0x02) | |
71 | #define ZD_CCK_RATE_11M (ZD_CCK|0x03) | |
72 | #define ZD_OFDM_RATE_6M (ZD_OFDM|ZD_OFDM_PLCP_RATE_6M) | |
73 | #define ZD_OFDM_RATE_9M (ZD_OFDM|ZD_OFDM_PLCP_RATE_9M) | |
74 | #define ZD_OFDM_RATE_12M (ZD_OFDM|ZD_OFDM_PLCP_RATE_12M) | |
75 | #define ZD_OFDM_RATE_18M (ZD_OFDM|ZD_OFDM_PLCP_RATE_18M) | |
76 | #define ZD_OFDM_RATE_24M (ZD_OFDM|ZD_OFDM_PLCP_RATE_24M) | |
77 | #define ZD_OFDM_RATE_36M (ZD_OFDM|ZD_OFDM_PLCP_RATE_36M) | |
78 | #define ZD_OFDM_RATE_48M (ZD_OFDM|ZD_OFDM_PLCP_RATE_48M) | |
79 | #define ZD_OFDM_RATE_54M (ZD_OFDM|ZD_OFDM_PLCP_RATE_54M) | |
80 | ||
81 | /* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK | |
82 | * mode or the 802.11a/802.11g selection in OFDM mode. | |
83 | */ | |
84 | #define ZD_CCK_PREA_LONG 0x00 | |
85 | #define ZD_CCK_PREA_SHORT 0x20 | |
86 | #define ZD_OFDM_MODE_11G 0x00 | |
87 | #define ZD_OFDM_MODE_11A 0x20 | |
e85d0918 DD |
88 | |
89 | /* zd_ctrlset control field */ | |
90 | #define ZD_CS_NEED_RANDOM_BACKOFF 0x01 | |
91 | #define ZD_CS_MULTICAST 0x02 | |
92 | ||
93 | #define ZD_CS_FRAME_TYPE_MASK 0x0c | |
94 | #define ZD_CS_DATA_FRAME 0x00 | |
95 | #define ZD_CS_PS_POLL_FRAME 0x04 | |
96 | #define ZD_CS_MANAGEMENT_FRAME 0x08 | |
97 | #define ZD_CS_NO_SEQUENCE_CTL_FRAME 0x0c | |
98 | ||
99 | #define ZD_CS_WAKE_DESTINATION 0x10 | |
100 | #define ZD_CS_RTS 0x20 | |
101 | #define ZD_CS_ENCRYPT 0x40 | |
102 | #define ZD_CS_SELF_CTS 0x80 | |
103 | ||
104 | /* Incoming frames are prepended by a PLCP header */ | |
105 | #define ZD_PLCP_HEADER_SIZE 5 | |
106 | ||
107 | struct rx_length_info { | |
108 | __le16 length[3]; | |
109 | __le16 tag; | |
a88556a4 | 110 | } __attribute__((packed)); |
e85d0918 DD |
111 | |
112 | #define RX_LENGTH_INFO_TAG 0x697e | |
113 | ||
114 | struct rx_status { | |
db888aed | 115 | u8 signal_quality_cck; |
e85d0918 DD |
116 | /* rssi */ |
117 | u8 signal_strength; | |
e85d0918 DD |
118 | u8 signal_quality_ofdm; |
119 | u8 decryption_type; | |
120 | u8 frame_status; | |
a88556a4 | 121 | } __attribute__((packed)); |
e85d0918 DD |
122 | |
123 | /* rx_status field decryption_type */ | |
124 | #define ZD_RX_NO_WEP 0 | |
125 | #define ZD_RX_WEP64 1 | |
126 | #define ZD_RX_TKIP 2 | |
127 | #define ZD_RX_AES 4 | |
128 | #define ZD_RX_WEP128 5 | |
129 | #define ZD_RX_WEP256 6 | |
130 | ||
131 | /* rx_status field frame_status */ | |
132 | #define ZD_RX_FRAME_MODULATION_MASK 0x01 | |
133 | #define ZD_RX_CCK 0x00 | |
134 | #define ZD_RX_OFDM 0x01 | |
135 | ||
136 | #define ZD_RX_TIMEOUT_ERROR 0x02 | |
137 | #define ZD_RX_FIFO_OVERRUN_ERROR 0x04 | |
138 | #define ZD_RX_DECRYPTION_ERROR 0x08 | |
139 | #define ZD_RX_CRC32_ERROR 0x10 | |
140 | #define ZD_RX_NO_ADDR1_MATCH_ERROR 0x20 | |
141 | #define ZD_RX_CRC16_ERROR 0x40 | |
142 | #define ZD_RX_ERROR 0x80 | |
143 | ||
459c51ad DD |
144 | enum mac_flags { |
145 | MAC_FIXED_CHANNEL = 0x01, | |
146 | }; | |
147 | ||
583afd1e | 148 | struct housekeeping { |
c4028958 | 149 | struct delayed_work link_led_work; |
583afd1e UK |
150 | }; |
151 | ||
459c51ad DD |
152 | /** |
153 | * struct zd_tx_skb_control_block - control block for tx skbuffs | |
154 | * @control: &struct ieee80211_tx_control pointer | |
155 | * @context: context pointer | |
156 | * | |
157 | * This structure is used to fill the cb field in an &sk_buff to transmit. | |
158 | * The control field is NULL, if there is no requirement from the mac80211 | |
159 | * stack to report about the packet ACK. This is the case if the flag | |
160 | * IEEE80211_TXCTL_NO_ACK is not set in &struct ieee80211_tx_control. | |
161 | */ | |
162 | struct zd_tx_skb_control_block { | |
163 | struct ieee80211_tx_control *control; | |
164 | struct ieee80211_hw *hw; | |
165 | void *context; | |
166 | }; | |
167 | ||
db888aed UK |
168 | #define ZD_MAC_STATS_BUFFER_SIZE 16 |
169 | ||
459c51ad DD |
170 | #define ZD_MAC_MAX_ACK_WAITERS 10 |
171 | ||
e85d0918 | 172 | struct zd_mac { |
e85d0918 DD |
173 | struct zd_chip chip; |
174 | spinlock_t lock; | |
459c51ad | 175 | struct ieee80211_hw *hw; |
583afd1e | 176 | struct housekeeping housekeeping; |
9cdac965 | 177 | struct work_struct set_multicast_hash_work; |
459c51ad DD |
178 | struct work_struct set_rts_cts_work; |
179 | struct work_struct set_rx_filter_work; | |
9cdac965 | 180 | struct zd_mc_hash multicast_hash; |
e85d0918 DD |
181 | u8 regdomain; |
182 | u8 default_regdomain; | |
459c51ad DD |
183 | int type; |
184 | int associated; | |
185 | struct sk_buff_head ack_wait_queue; | |
186 | struct ieee80211_channel channels[14]; | |
187 | struct ieee80211_rate rates[12]; | |
8318d78a | 188 | struct ieee80211_supported_band band; |
b1382ede DD |
189 | |
190 | /* Short preamble (used for RTS/CTS) */ | |
191 | unsigned int short_preamble:1; | |
192 | ||
193 | /* flags to indicate update in progress */ | |
194 | unsigned int updating_rts_rate:1; | |
e85d0918 | 195 | |
459c51ad DD |
196 | /* whether to pass frames with CRC errors to stack */ |
197 | unsigned int pass_failed_fcs:1; | |
e85d0918 | 198 | |
459c51ad DD |
199 | /* whether to pass control frames to stack */ |
200 | unsigned int pass_ctrl:1; | |
201 | }; | |
202 | ||
203 | static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw) | |
e85d0918 | 204 | { |
459c51ad | 205 | return hw->priv; |
e85d0918 DD |
206 | } |
207 | ||
208 | static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip) | |
209 | { | |
210 | return container_of(chip, struct zd_mac, chip); | |
211 | } | |
212 | ||
213 | static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb) | |
214 | { | |
215 | return zd_chip_to_mac(zd_usb_to_chip(usb)); | |
216 | } | |
217 | ||
459c51ad DD |
218 | static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac) |
219 | { | |
220 | return mac->hw->wiphy->perm_addr; | |
221 | } | |
222 | ||
e85d0918 DD |
223 | #define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip)) |
224 | ||
459c51ad | 225 | struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf); |
e85d0918 DD |
226 | void zd_mac_clear(struct zd_mac *mac); |
227 | ||
459c51ad DD |
228 | int zd_mac_preinit_hw(struct ieee80211_hw *hw); |
229 | int zd_mac_init_hw(struct ieee80211_hw *hw); | |
e85d0918 | 230 | |
459c51ad DD |
231 | int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length); |
232 | void zd_mac_tx_failed(struct ieee80211_hw *hw); | |
233 | void zd_mac_tx_to_dev(struct sk_buff *skb, int error); | |
e85d0918 DD |
234 | |
235 | #ifdef DEBUG | |
236 | void zd_dump_rx_status(const struct rx_status *status); | |
237 | #else | |
238 | #define zd_dump_rx_status(status) | |
239 | #endif /* DEBUG */ | |
240 | ||
241 | #endif /* _ZD_MAC_H */ |