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1 | /* zd_mac.c |
2 | * | |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2 of the License, or | |
6 | * (at your option) any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
17 | ||
18 | #ifndef _ZD_MAC_H | |
19 | #define _ZD_MAC_H | |
20 | ||
21 | #include <linux/wireless.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <net/ieee80211.h> | |
24 | #include <net/ieee80211softmac.h> | |
25 | ||
26 | #include "zd_chip.h" | |
27 | #include "zd_netdev.h" | |
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; | |
38 | } __attribute__((packed)); | |
39 | ||
40 | #define ZD_CS_RESERVED_SIZE 25 | |
41 | ||
42 | /* zd_crtlset field modulation */ | |
43 | #define ZD_CS_RATE_MASK 0x0f | |
44 | #define ZD_CS_TYPE_MASK 0x10 | |
45 | #define ZD_CS_RATE(modulation) ((modulation) & ZD_CS_RATE_MASK) | |
46 | #define ZD_CS_TYPE(modulation) ((modulation) & ZD_CS_TYPE_MASK) | |
47 | ||
48 | #define ZD_CS_CCK 0x00 | |
49 | #define ZD_CS_OFDM 0x10 | |
50 | ||
51 | #define ZD_CS_CCK_RATE_1M 0x00 | |
52 | #define ZD_CS_CCK_RATE_2M 0x01 | |
53 | #define ZD_CS_CCK_RATE_5_5M 0x02 | |
54 | #define ZD_CS_CCK_RATE_11M 0x03 | |
55 | /* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*. | |
56 | */ | |
57 | ||
58 | /* bit 5 is preamble (when in CCK mode), or a/g selection (when in OFDM mode) */ | |
59 | #define ZD_CS_CCK_PREA_LONG 0x00 | |
60 | #define ZD_CS_CCK_PREA_SHORT 0x20 | |
61 | #define ZD_CS_OFDM_MODE_11G 0x00 | |
62 | #define ZD_CS_OFDM_MODE_11A 0x20 | |
63 | ||
64 | /* zd_ctrlset control field */ | |
65 | #define ZD_CS_NEED_RANDOM_BACKOFF 0x01 | |
66 | #define ZD_CS_MULTICAST 0x02 | |
67 | ||
68 | #define ZD_CS_FRAME_TYPE_MASK 0x0c | |
69 | #define ZD_CS_DATA_FRAME 0x00 | |
70 | #define ZD_CS_PS_POLL_FRAME 0x04 | |
71 | #define ZD_CS_MANAGEMENT_FRAME 0x08 | |
72 | #define ZD_CS_NO_SEQUENCE_CTL_FRAME 0x0c | |
73 | ||
74 | #define ZD_CS_WAKE_DESTINATION 0x10 | |
75 | #define ZD_CS_RTS 0x20 | |
76 | #define ZD_CS_ENCRYPT 0x40 | |
77 | #define ZD_CS_SELF_CTS 0x80 | |
78 | ||
79 | /* Incoming frames are prepended by a PLCP header */ | |
80 | #define ZD_PLCP_HEADER_SIZE 5 | |
81 | ||
82 | struct rx_length_info { | |
83 | __le16 length[3]; | |
84 | __le16 tag; | |
85 | } __attribute__((packed)); | |
86 | ||
87 | #define RX_LENGTH_INFO_TAG 0x697e | |
88 | ||
89 | struct rx_status { | |
90 | /* rssi */ | |
91 | u8 signal_strength; | |
92 | u8 signal_quality_cck; | |
93 | u8 signal_quality_ofdm; | |
94 | u8 decryption_type; | |
95 | u8 frame_status; | |
96 | } __attribute__((packed)); | |
97 | ||
98 | /* rx_status field decryption_type */ | |
99 | #define ZD_RX_NO_WEP 0 | |
100 | #define ZD_RX_WEP64 1 | |
101 | #define ZD_RX_TKIP 2 | |
102 | #define ZD_RX_AES 4 | |
103 | #define ZD_RX_WEP128 5 | |
104 | #define ZD_RX_WEP256 6 | |
105 | ||
106 | /* rx_status field frame_status */ | |
107 | #define ZD_RX_FRAME_MODULATION_MASK 0x01 | |
108 | #define ZD_RX_CCK 0x00 | |
109 | #define ZD_RX_OFDM 0x01 | |
110 | ||
111 | #define ZD_RX_TIMEOUT_ERROR 0x02 | |
112 | #define ZD_RX_FIFO_OVERRUN_ERROR 0x04 | |
113 | #define ZD_RX_DECRYPTION_ERROR 0x08 | |
114 | #define ZD_RX_CRC32_ERROR 0x10 | |
115 | #define ZD_RX_NO_ADDR1_MATCH_ERROR 0x20 | |
116 | #define ZD_RX_CRC16_ERROR 0x40 | |
117 | #define ZD_RX_ERROR 0x80 | |
118 | ||
119 | enum mac_flags { | |
120 | MAC_FIXED_CHANNEL = 0x01, | |
121 | }; | |
122 | ||
123 | struct zd_mac { | |
124 | struct net_device *netdev; | |
125 | struct zd_chip chip; | |
126 | spinlock_t lock; | |
127 | /* Unlocked reading possible */ | |
128 | struct iw_statistics iw_stats; | |
129 | u8 qual_average; | |
130 | u8 rssi_average; | |
131 | u8 regdomain; | |
132 | u8 default_regdomain; | |
133 | u8 requested_channel; | |
134 | }; | |
135 | ||
136 | static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac) | |
137 | { | |
138 | return zd_netdev_ieee80211(mac->netdev); | |
139 | } | |
140 | ||
141 | static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev) | |
142 | { | |
143 | return ieee80211softmac_priv(netdev); | |
144 | } | |
145 | ||
146 | static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip) | |
147 | { | |
148 | return container_of(chip, struct zd_mac, chip); | |
149 | } | |
150 | ||
151 | static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb) | |
152 | { | |
153 | return zd_chip_to_mac(zd_usb_to_chip(usb)); | |
154 | } | |
155 | ||
156 | #define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip)) | |
157 | ||
158 | int zd_mac_init(struct zd_mac *mac, | |
159 | struct net_device *netdev, | |
160 | struct usb_interface *intf); | |
161 | void zd_mac_clear(struct zd_mac *mac); | |
162 | ||
163 | int zd_mac_init_hw(struct zd_mac *mac, u8 device_type); | |
164 | ||
165 | int zd_mac_open(struct net_device *netdev); | |
166 | int zd_mac_stop(struct net_device *netdev); | |
167 | int zd_mac_set_mac_address(struct net_device *dev, void *p); | |
168 | ||
169 | int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length); | |
170 | ||
171 | int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain); | |
172 | u8 zd_mac_get_regdomain(struct zd_mac *zd_mac); | |
173 | ||
174 | int zd_mac_request_channel(struct zd_mac *mac, u8 channel); | |
175 | int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags); | |
176 | ||
177 | int zd_mac_set_mode(struct zd_mac *mac, u32 mode); | |
178 | int zd_mac_get_mode(struct zd_mac *mac, u32 *mode); | |
179 | ||
180 | int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range); | |
181 | ||
182 | struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev); | |
183 | ||
184 | #ifdef DEBUG | |
185 | void zd_dump_rx_status(const struct rx_status *status); | |
186 | #else | |
187 | #define zd_dump_rx_status(status) | |
188 | #endif /* DEBUG */ | |
189 | ||
190 | #endif /* _ZD_MAC_H */ |