Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1 | /* |
Ivo van Doorn | 811aa9c | 2008-02-03 15:42:53 +0100 | [diff] [blame] | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 3 | <http://rt2x00.serialmonkey.com> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the |
| 17 | Free Software Foundation, Inc., |
| 18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | Module: rt2x00 |
| 23 | Abstract: rt2x00 global information. |
| 24 | */ |
| 25 | |
| 26 | #ifndef RT2X00_H |
| 27 | #define RT2X00_H |
| 28 | |
| 29 | #include <linux/bitops.h> |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 30 | #include <linux/skbuff.h> |
| 31 | #include <linux/workqueue.h> |
| 32 | #include <linux/firmware.h> |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 33 | #include <linux/leds.h> |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 34 | #include <linux/mutex.h> |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 35 | #include <linux/etherdevice.h> |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 36 | |
| 37 | #include <net/mac80211.h> |
| 38 | |
| 39 | #include "rt2x00debug.h" |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 40 | #include "rt2x00leds.h" |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 41 | #include "rt2x00reg.h" |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 42 | #include "rt2x00queue.h" |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 43 | |
| 44 | /* |
| 45 | * Module information. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 46 | */ |
Ivo van Doorn | 5b28d3c | 2008-04-21 19:02:35 +0200 | [diff] [blame] | 47 | #define DRV_VERSION "2.1.5" |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 48 | #define DRV_PROJECT "http://rt2x00.serialmonkey.com" |
| 49 | |
| 50 | /* |
| 51 | * Debug definitions. |
| 52 | * Debug output has to be enabled during compile time. |
| 53 | */ |
| 54 | #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \ |
| 55 | printk(__kernlvl "%s -> %s: %s - " __msg, \ |
| 56 | wiphy_name((__dev)->hw->wiphy), __FUNCTION__, __lvl, ##__args) |
| 57 | |
| 58 | #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \ |
| 59 | printk(__kernlvl "%s -> %s: %s - " __msg, \ |
Ivo van Doorn | 2360157 | 2007-11-27 21:47:34 +0100 | [diff] [blame] | 60 | KBUILD_MODNAME, __FUNCTION__, __lvl, ##__args) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 61 | |
| 62 | #ifdef CONFIG_RT2X00_DEBUG |
| 63 | #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \ |
| 64 | DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args); |
| 65 | #else |
| 66 | #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \ |
| 67 | do { } while (0) |
| 68 | #endif /* CONFIG_RT2X00_DEBUG */ |
| 69 | |
| 70 | /* |
| 71 | * Various debug levels. |
| 72 | * The debug levels PANIC and ERROR both indicate serious problems, |
| 73 | * for this reason they should never be ignored. |
| 74 | * The special ERROR_PROBE message is for messages that are generated |
| 75 | * when the rt2x00_dev is not yet initialized. |
| 76 | */ |
| 77 | #define PANIC(__dev, __msg, __args...) \ |
| 78 | DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args) |
| 79 | #define ERROR(__dev, __msg, __args...) \ |
| 80 | DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args) |
| 81 | #define ERROR_PROBE(__msg, __args...) \ |
| 82 | DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args) |
| 83 | #define WARNING(__dev, __msg, __args...) \ |
| 84 | DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args) |
| 85 | #define NOTICE(__dev, __msg, __args...) \ |
| 86 | DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args) |
| 87 | #define INFO(__dev, __msg, __args...) \ |
| 88 | DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args) |
| 89 | #define DEBUG(__dev, __msg, __args...) \ |
| 90 | DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args) |
| 91 | #define EEPROM(__dev, __msg, __args...) \ |
| 92 | DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args) |
| 93 | |
| 94 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 95 | * Standard timing and size defines. |
| 96 | * These values should follow the ieee80211 specifications. |
| 97 | */ |
| 98 | #define ACK_SIZE 14 |
| 99 | #define IEEE80211_HEADER 24 |
| 100 | #define PLCP 48 |
| 101 | #define BEACON 100 |
| 102 | #define PREAMBLE 144 |
| 103 | #define SHORT_PREAMBLE 72 |
| 104 | #define SLOT_TIME 20 |
| 105 | #define SHORT_SLOT_TIME 9 |
| 106 | #define SIFS 10 |
| 107 | #define PIFS ( SIFS + SLOT_TIME ) |
| 108 | #define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME ) |
| 109 | #define DIFS ( PIFS + SLOT_TIME ) |
| 110 | #define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME ) |
| 111 | #define EIFS ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) ) |
| 112 | |
| 113 | /* |
| 114 | * IEEE802.11 header defines |
| 115 | */ |
| 116 | static inline int is_rts_frame(u16 fc) |
| 117 | { |
Ivo van Doorn | ddc827f | 2007-10-13 16:26:42 +0200 | [diff] [blame] | 118 | return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) && |
| 119 | ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_RTS)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | static inline int is_cts_frame(u16 fc) |
| 123 | { |
Ivo van Doorn | ddc827f | 2007-10-13 16:26:42 +0200 | [diff] [blame] | 124 | return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) && |
| 125 | ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_CTS)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | static inline int is_probe_resp(u16 fc) |
| 129 | { |
Ivo van Doorn | ddc827f | 2007-10-13 16:26:42 +0200 | [diff] [blame] | 130 | return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) && |
| 131 | ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 132 | } |
| 133 | |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 134 | static inline int is_beacon(u16 fc) |
| 135 | { |
| 136 | return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) && |
| 137 | ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)); |
| 138 | } |
| 139 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 140 | /* |
| 141 | * Chipset identification |
| 142 | * The chipset on the device is composed of a RT and RF chip. |
| 143 | * The chipset combination is important for determining device capabilities. |
| 144 | */ |
| 145 | struct rt2x00_chip { |
| 146 | u16 rt; |
| 147 | #define RT2460 0x0101 |
| 148 | #define RT2560 0x0201 |
| 149 | #define RT2570 0x1201 |
Ivo van Doorn | 12dadb9 | 2007-09-25 20:54:44 +0200 | [diff] [blame] | 150 | #define RT2561s 0x0301 /* Turbo */ |
| 151 | #define RT2561 0x0302 |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 152 | #define RT2661 0x0401 |
| 153 | #define RT2571 0x1300 |
| 154 | |
| 155 | u16 rf; |
| 156 | u32 rev; |
| 157 | }; |
| 158 | |
| 159 | /* |
| 160 | * RF register values that belong to a particular channel. |
| 161 | */ |
| 162 | struct rf_channel { |
| 163 | int channel; |
| 164 | u32 rf1; |
| 165 | u32 rf2; |
| 166 | u32 rf3; |
| 167 | u32 rf4; |
| 168 | }; |
| 169 | |
| 170 | /* |
Ivo van Doorn | addc81bd | 2007-10-13 16:26:23 +0200 | [diff] [blame] | 171 | * Antenna setup values. |
| 172 | */ |
| 173 | struct antenna_setup { |
| 174 | enum antenna rx; |
| 175 | enum antenna tx; |
| 176 | }; |
| 177 | |
| 178 | /* |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 179 | * Quality statistics about the currently active link. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 180 | */ |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 181 | struct link_qual { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 182 | /* |
| 183 | * Statistics required for Link tuning. |
| 184 | * For the average RSSI value we use the "Walking average" approach. |
| 185 | * When adding RSSI to the average value the following calculation |
| 186 | * is needed: |
| 187 | * |
| 188 | * avg_rssi = ((avg_rssi * 7) + rssi) / 8; |
| 189 | * |
| 190 | * The advantage of this approach is that we only need 1 variable |
| 191 | * to store the average in (No need for a count and a total). |
| 192 | * But more importantly, normal average values will over time |
| 193 | * move less and less towards newly added values this results |
| 194 | * that with link tuning, the device can have a very good RSSI |
| 195 | * for a few minutes but when the device is moved away from the AP |
| 196 | * the average will not decrease fast enough to compensate. |
| 197 | * The walking average compensates this and will move towards |
| 198 | * the new values correctly allowing a effective link tuning. |
| 199 | */ |
| 200 | int avg_rssi; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 201 | int false_cca; |
| 202 | |
| 203 | /* |
| 204 | * Statistics required for Signal quality calculation. |
| 205 | * For calculating the Signal quality we have to determine |
| 206 | * the total number of success and failed RX and TX frames. |
| 207 | * After that we also use the average RSSI value to help |
| 208 | * determining the signal quality. |
| 209 | * For the calculation we will use the following algorithm: |
| 210 | * |
| 211 | * rssi_percentage = (avg_rssi * 100) / rssi_offset |
| 212 | * rx_percentage = (rx_success * 100) / rx_total |
| 213 | * tx_percentage = (tx_success * 100) / tx_total |
| 214 | * avg_signal = ((WEIGHT_RSSI * avg_rssi) + |
| 215 | * (WEIGHT_TX * tx_percentage) + |
| 216 | * (WEIGHT_RX * rx_percentage)) / 100 |
| 217 | * |
| 218 | * This value should then be checked to not be greated then 100. |
| 219 | */ |
| 220 | int rx_percentage; |
| 221 | int rx_success; |
| 222 | int rx_failed; |
| 223 | int tx_percentage; |
| 224 | int tx_success; |
| 225 | int tx_failed; |
| 226 | #define WEIGHT_RSSI 20 |
| 227 | #define WEIGHT_RX 40 |
| 228 | #define WEIGHT_TX 40 |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 229 | }; |
| 230 | |
| 231 | /* |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 232 | * Antenna settings about the currently active link. |
| 233 | */ |
| 234 | struct link_ant { |
| 235 | /* |
| 236 | * Antenna flags |
| 237 | */ |
| 238 | unsigned int flags; |
| 239 | #define ANTENNA_RX_DIVERSITY 0x00000001 |
| 240 | #define ANTENNA_TX_DIVERSITY 0x00000002 |
| 241 | #define ANTENNA_MODE_SAMPLE 0x00000004 |
| 242 | |
| 243 | /* |
| 244 | * Currently active TX/RX antenna setup. |
| 245 | * When software diversity is used, this will indicate |
| 246 | * which antenna is actually used at this time. |
| 247 | */ |
| 248 | struct antenna_setup active; |
| 249 | |
| 250 | /* |
| 251 | * RSSI information for the different antenna's. |
| 252 | * These statistics are used to determine when |
| 253 | * to switch antenna when using software diversity. |
| 254 | * |
| 255 | * rssi[0] -> Antenna A RSSI |
| 256 | * rssi[1] -> Antenna B RSSI |
| 257 | */ |
| 258 | int rssi_history[2]; |
| 259 | |
| 260 | /* |
| 261 | * Current RSSI average of the currently active antenna. |
| 262 | * Similar to the avg_rssi in the link_qual structure |
| 263 | * this value is updated by using the walking average. |
| 264 | */ |
| 265 | int rssi_ant; |
| 266 | }; |
| 267 | |
| 268 | /* |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 269 | * To optimize the quality of the link we need to store |
| 270 | * the quality of received frames and periodically |
| 271 | * optimize the link. |
| 272 | */ |
| 273 | struct link { |
| 274 | /* |
| 275 | * Link tuner counter |
| 276 | * The number of times the link has been tuned |
| 277 | * since the radio has been switched on. |
| 278 | */ |
| 279 | u32 count; |
| 280 | |
| 281 | /* |
| 282 | * Quality measurement values. |
| 283 | */ |
| 284 | struct link_qual qual; |
| 285 | |
| 286 | /* |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 287 | * TX/RX antenna setup. |
Ivo van Doorn | addc81bd | 2007-10-13 16:26:23 +0200 | [diff] [blame] | 288 | */ |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 289 | struct link_ant ant; |
Ivo van Doorn | addc81bd | 2007-10-13 16:26:23 +0200 | [diff] [blame] | 290 | |
| 291 | /* |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 292 | * Active VGC level |
| 293 | */ |
| 294 | int vgc_level; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 295 | |
| 296 | /* |
| 297 | * Work structure for scheduling periodic link tuning. |
| 298 | */ |
| 299 | struct delayed_work work; |
| 300 | }; |
| 301 | |
| 302 | /* |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 303 | * Small helper macro to work with moving/walking averages. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 304 | */ |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 305 | #define MOVING_AVERAGE(__avg, __val, __samples) \ |
| 306 | ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) ) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 307 | |
| 308 | /* |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 309 | * When we lack RSSI information return something less then -80 to |
| 310 | * tell the driver to tune the device to maximum sensitivity. |
| 311 | */ |
| 312 | #define DEFAULT_RSSI ( -128 ) |
| 313 | |
| 314 | /* |
| 315 | * Link quality access functions. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 316 | */ |
| 317 | static inline int rt2x00_get_link_rssi(struct link *link) |
| 318 | { |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 319 | if (link->qual.avg_rssi && link->qual.rx_success) |
| 320 | return link->qual.avg_rssi; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 321 | return DEFAULT_RSSI; |
| 322 | } |
| 323 | |
| 324 | static inline int rt2x00_get_link_ant_rssi(struct link *link) |
| 325 | { |
| 326 | if (link->ant.rssi_ant && link->qual.rx_success) |
| 327 | return link->ant.rssi_ant; |
| 328 | return DEFAULT_RSSI; |
| 329 | } |
| 330 | |
| 331 | static inline int rt2x00_get_link_ant_rssi_history(struct link *link, |
| 332 | enum antenna ant) |
| 333 | { |
| 334 | if (link->ant.rssi_history[ant - ANTENNA_A]) |
| 335 | return link->ant.rssi_history[ant - ANTENNA_A]; |
| 336 | return DEFAULT_RSSI; |
| 337 | } |
| 338 | |
| 339 | static inline int rt2x00_update_ant_rssi(struct link *link, int rssi) |
| 340 | { |
| 341 | int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A]; |
| 342 | link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi; |
| 343 | return old_rssi; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | /* |
| 347 | * Interface structure |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 348 | * Per interface configuration details, this structure |
| 349 | * is allocated as the private data for ieee80211_vif. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 350 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 351 | struct rt2x00_intf { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 352 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 353 | * All fields within the rt2x00_intf structure |
| 354 | * must be protected with a spinlock. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 355 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 356 | spinlock_t lock; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 357 | |
| 358 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 359 | * BSS configuration. Copied from the structure |
| 360 | * passed to us through the bss_info_changed() |
| 361 | * callback funtion. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 362 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 363 | struct ieee80211_bss_conf conf; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 364 | |
| 365 | /* |
| 366 | * MAC of the device. |
| 367 | */ |
| 368 | u8 mac[ETH_ALEN]; |
| 369 | |
| 370 | /* |
| 371 | * BBSID of the AP to associate with. |
| 372 | */ |
| 373 | u8 bssid[ETH_ALEN]; |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 374 | |
| 375 | /* |
| 376 | * Entry in the beacon queue which belongs to |
| 377 | * this interface. Each interface has its own |
| 378 | * dedicated beacon entry. |
| 379 | */ |
| 380 | struct queue_entry *beacon; |
| 381 | |
| 382 | /* |
| 383 | * Actions that needed rescheduling. |
| 384 | */ |
| 385 | unsigned int delayed_flags; |
| 386 | #define DELAYED_UPDATE_BEACON 0x00000001 |
Ivo van Doorn | 7281037 | 2008-03-09 22:46:18 +0100 | [diff] [blame] | 387 | #define DELAYED_CONFIG_ERP 0x00000002 |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 388 | #define DELAYED_LED_ASSOC 0x00000004 |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 389 | }; |
| 390 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 391 | static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 392 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 393 | return (struct rt2x00_intf *)vif->drv_priv; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 394 | } |
| 395 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 396 | /** |
| 397 | * struct hw_mode_spec: Hardware specifications structure |
| 398 | * |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 399 | * Details about the supported modes, rates and channels |
| 400 | * of a particular chipset. This is used by rt2x00lib |
| 401 | * to build the ieee80211_hw_mode array for mac80211. |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 402 | * |
| 403 | * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz). |
| 404 | * @supported_rates: Rate types which are supported (CCK, OFDM). |
| 405 | * @num_channels: Number of supported channels. This is used as array size |
| 406 | * for @tx_power_a, @tx_power_bg and @channels. |
Ivo van Doorn | 9a46d44 | 2008-04-21 19:02:17 +0200 | [diff] [blame] | 407 | * @channels: Device/chipset specific channel values (See &struct rf_channel). |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 408 | * @tx_power_a: TX power values for all 5.2GHz channels (may be NULL). |
| 409 | * @tx_power_bg: TX power values for all 2.4GHz channels (may be NULL). |
| 410 | * @tx_power_default: Default TX power value to use when either |
| 411 | * @tx_power_a or @tx_power_bg is missing. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 412 | */ |
| 413 | struct hw_mode_spec { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 414 | unsigned int supported_bands; |
| 415 | #define SUPPORT_BAND_2GHZ 0x00000001 |
| 416 | #define SUPPORT_BAND_5GHZ 0x00000002 |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 417 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 418 | unsigned int supported_rates; |
| 419 | #define SUPPORT_RATE_CCK 0x00000001 |
| 420 | #define SUPPORT_RATE_OFDM 0x00000002 |
| 421 | |
| 422 | unsigned int num_channels; |
| 423 | const struct rf_channel *channels; |
| 424 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 425 | const u8 *tx_power_a; |
| 426 | const u8 *tx_power_bg; |
| 427 | u8 tx_power_default; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 428 | }; |
| 429 | |
| 430 | /* |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 431 | * Configuration structure wrapper around the |
| 432 | * mac80211 configuration structure. |
| 433 | * When mac80211 configures the driver, rt2x00lib |
| 434 | * can precalculate values which are equal for all |
| 435 | * rt2x00 drivers. Those values can be stored in here. |
| 436 | */ |
| 437 | struct rt2x00lib_conf { |
| 438 | struct ieee80211_conf *conf; |
| 439 | struct rf_channel rf; |
| 440 | |
Ivo van Doorn | addc81bd | 2007-10-13 16:26:23 +0200 | [diff] [blame] | 441 | struct antenna_setup ant; |
| 442 | |
Ivo van Doorn | f5507ce | 2008-02-03 15:51:13 +0100 | [diff] [blame] | 443 | enum ieee80211_band band; |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 444 | |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 445 | u32 basic_rates; |
| 446 | u32 slot_time; |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 447 | |
| 448 | short sifs; |
| 449 | short pifs; |
| 450 | short difs; |
| 451 | short eifs; |
| 452 | }; |
| 453 | |
| 454 | /* |
Ivo van Doorn | 7281037 | 2008-03-09 22:46:18 +0100 | [diff] [blame] | 455 | * Configuration structure for erp settings. |
| 456 | */ |
| 457 | struct rt2x00lib_erp { |
| 458 | int short_preamble; |
| 459 | |
| 460 | int ack_timeout; |
| 461 | int ack_consume_time; |
| 462 | }; |
| 463 | |
| 464 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 465 | * Configuration structure wrapper around the |
| 466 | * rt2x00 interface configuration handler. |
| 467 | */ |
| 468 | struct rt2x00intf_conf { |
| 469 | /* |
| 470 | * Interface type |
| 471 | */ |
| 472 | enum ieee80211_if_types type; |
| 473 | |
| 474 | /* |
| 475 | * TSF sync value, this is dependant on the operation type. |
| 476 | */ |
| 477 | enum tsf_sync sync; |
| 478 | |
| 479 | /* |
| 480 | * The MAC and BSSID addressess are simple array of bytes, |
| 481 | * these arrays are little endian, so when sending the addressess |
| 482 | * to the drivers, copy the it into a endian-signed variable. |
| 483 | * |
| 484 | * Note that all devices (except rt2500usb) have 32 bits |
| 485 | * register word sizes. This means that whatever variable we |
| 486 | * pass _must_ be a multiple of 32 bits. Otherwise the device |
| 487 | * might not accept what we are sending to it. |
| 488 | * This will also make it easier for the driver to write |
| 489 | * the data to the device. |
| 490 | */ |
| 491 | __le32 mac[2]; |
| 492 | __le32 bssid[2]; |
| 493 | }; |
| 494 | |
| 495 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 496 | * rt2x00lib callback functions. |
| 497 | */ |
| 498 | struct rt2x00lib_ops { |
| 499 | /* |
| 500 | * Interrupt handlers. |
| 501 | */ |
| 502 | irq_handler_t irq_handler; |
| 503 | |
| 504 | /* |
| 505 | * Device init handlers. |
| 506 | */ |
| 507 | int (*probe_hw) (struct rt2x00_dev *rt2x00dev); |
| 508 | char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev); |
Ivo van Doorn | a7f3a06 | 2008-03-09 22:44:54 +0100 | [diff] [blame] | 509 | u16 (*get_firmware_crc) (void *data, const size_t len); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 510 | int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data, |
| 511 | const size_t len); |
| 512 | |
| 513 | /* |
| 514 | * Device initialization/deinitialization handlers. |
| 515 | */ |
| 516 | int (*initialize) (struct rt2x00_dev *rt2x00dev); |
| 517 | void (*uninitialize) (struct rt2x00_dev *rt2x00dev); |
| 518 | |
| 519 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 520 | * queue initialization handlers |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 521 | */ |
| 522 | void (*init_rxentry) (struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 523 | struct queue_entry *entry); |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 524 | void (*init_txentry) (struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 525 | struct queue_entry *entry); |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 526 | |
| 527 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 528 | * Radio control handlers. |
| 529 | */ |
| 530 | int (*set_device_state) (struct rt2x00_dev *rt2x00dev, |
| 531 | enum dev_state state); |
| 532 | int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev); |
Ivo van Doorn | ebcf26d | 2007-10-13 16:26:12 +0200 | [diff] [blame] | 533 | void (*link_stats) (struct rt2x00_dev *rt2x00dev, |
| 534 | struct link_qual *qual); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 535 | void (*reset_tuner) (struct rt2x00_dev *rt2x00dev); |
| 536 | void (*link_tuner) (struct rt2x00_dev *rt2x00dev); |
| 537 | |
| 538 | /* |
| 539 | * TX control handlers |
| 540 | */ |
| 541 | void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | dd3193e | 2008-01-06 23:41:10 +0100 | [diff] [blame] | 542 | struct sk_buff *skb, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 543 | struct txentry_desc *txdesc, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 544 | struct ieee80211_tx_control *control); |
| 545 | int (*write_tx_data) (struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 546 | struct data_queue *queue, struct sk_buff *skb, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 547 | struct ieee80211_tx_control *control); |
Ivo van Doorn | b242e89 | 2007-11-15 23:41:31 +0100 | [diff] [blame] | 548 | int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | dd9fa2d | 2007-10-06 14:15:46 +0200 | [diff] [blame] | 549 | struct sk_buff *skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 550 | void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | e58c6ac | 2008-04-21 19:00:47 +0200 | [diff] [blame] | 551 | const enum data_queue_qid queue); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 552 | |
| 553 | /* |
| 554 | * RX control handlers |
| 555 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 556 | void (*fill_rxdone) (struct queue_entry *entry, |
| 557 | struct rxdone_entry_desc *rxdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 558 | |
| 559 | /* |
| 560 | * Configuration handlers. |
| 561 | */ |
Ivo van Doorn | 3a643d2 | 2008-03-25 14:13:18 +0100 | [diff] [blame] | 562 | void (*config_filter) (struct rt2x00_dev *rt2x00dev, |
| 563 | const unsigned int filter_flags); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 564 | void (*config_intf) (struct rt2x00_dev *rt2x00dev, |
| 565 | struct rt2x00_intf *intf, |
| 566 | struct rt2x00intf_conf *conf, |
| 567 | const unsigned int flags); |
| 568 | #define CONFIG_UPDATE_TYPE ( 1 << 1 ) |
| 569 | #define CONFIG_UPDATE_MAC ( 1 << 2 ) |
| 570 | #define CONFIG_UPDATE_BSSID ( 1 << 3 ) |
| 571 | |
Ivo van Doorn | 3a643d2 | 2008-03-25 14:13:18 +0100 | [diff] [blame] | 572 | void (*config_erp) (struct rt2x00_dev *rt2x00dev, |
| 573 | struct rt2x00lib_erp *erp); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 574 | void (*config) (struct rt2x00_dev *rt2x00dev, |
| 575 | struct rt2x00lib_conf *libconf, |
| 576 | const unsigned int flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 577 | #define CONFIG_UPDATE_PHYMODE ( 1 << 1 ) |
| 578 | #define CONFIG_UPDATE_CHANNEL ( 1 << 2 ) |
| 579 | #define CONFIG_UPDATE_TXPOWER ( 1 << 3 ) |
| 580 | #define CONFIG_UPDATE_ANTENNA ( 1 << 4 ) |
| 581 | #define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 ) |
| 582 | #define CONFIG_UPDATE_BEACON_INT ( 1 << 6 ) |
| 583 | #define CONFIG_UPDATE_ALL 0xffff |
| 584 | }; |
| 585 | |
| 586 | /* |
| 587 | * rt2x00 driver callback operation structure. |
| 588 | */ |
| 589 | struct rt2x00_ops { |
| 590 | const char *name; |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 591 | const unsigned int max_sta_intf; |
| 592 | const unsigned int max_ap_intf; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 593 | const unsigned int eeprom_size; |
| 594 | const unsigned int rf_size; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 595 | const struct data_queue_desc *rx; |
| 596 | const struct data_queue_desc *tx; |
| 597 | const struct data_queue_desc *bcn; |
| 598 | const struct data_queue_desc *atim; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 599 | const struct rt2x00lib_ops *lib; |
| 600 | const struct ieee80211_ops *hw; |
| 601 | #ifdef CONFIG_RT2X00_LIB_DEBUGFS |
| 602 | const struct rt2x00debug *debugfs; |
| 603 | #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ |
| 604 | }; |
| 605 | |
| 606 | /* |
Ivo van Doorn | 483272f | 2007-10-06 14:13:06 +0200 | [diff] [blame] | 607 | * rt2x00 device flags |
| 608 | */ |
| 609 | enum rt2x00_flags { |
| 610 | /* |
| 611 | * Device state flags |
| 612 | */ |
| 613 | DEVICE_PRESENT, |
| 614 | DEVICE_REGISTERED_HW, |
| 615 | DEVICE_INITIALIZED, |
| 616 | DEVICE_STARTED, |
| 617 | DEVICE_STARTED_SUSPEND, |
| 618 | DEVICE_ENABLED_RADIO, |
Ivo van Doorn | 81873e9 | 2007-10-06 14:14:06 +0200 | [diff] [blame] | 619 | DEVICE_DISABLED_RADIO_HW, |
Ivo van Doorn | 483272f | 2007-10-06 14:13:06 +0200 | [diff] [blame] | 620 | |
| 621 | /* |
| 622 | * Driver features |
| 623 | */ |
| 624 | DRIVER_REQUIRE_FIRMWARE, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 625 | DRIVER_REQUIRE_BEACON_GUARD, |
| 626 | DRIVER_REQUIRE_ATIM_QUEUE, |
Ivo van Doorn | 3a643d2 | 2008-03-25 14:13:18 +0100 | [diff] [blame] | 627 | DRIVER_REQUIRE_SCHEDULED, |
Ivo van Doorn | 483272f | 2007-10-06 14:13:06 +0200 | [diff] [blame] | 628 | |
| 629 | /* |
| 630 | * Driver configuration |
| 631 | */ |
| 632 | CONFIG_SUPPORT_HW_BUTTON, |
| 633 | CONFIG_FRAME_TYPE, |
| 634 | CONFIG_RF_SEQUENCE, |
| 635 | CONFIG_EXTERNAL_LNA_A, |
| 636 | CONFIG_EXTERNAL_LNA_BG, |
| 637 | CONFIG_DOUBLE_ANTENNA, |
| 638 | CONFIG_DISABLE_LINK_TUNING, |
| 639 | }; |
| 640 | |
| 641 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 642 | * rt2x00 device structure. |
| 643 | */ |
| 644 | struct rt2x00_dev { |
| 645 | /* |
| 646 | * Device structure. |
| 647 | * The structure stored in here depends on the |
| 648 | * system bus (PCI or USB). |
| 649 | * When accessing this variable, the rt2x00dev_{pci,usb} |
| 650 | * macro's should be used for correct typecasting. |
| 651 | */ |
| 652 | void *dev; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 653 | #define rt2x00dev_pci(__dev) ( (struct pci_dev *)(__dev)->dev ) |
| 654 | #define rt2x00dev_usb(__dev) ( (struct usb_interface *)(__dev)->dev ) |
| 655 | #define rt2x00dev_usb_dev(__dev)\ |
| 656 | ( (struct usb_device *)interface_to_usbdev(rt2x00dev_usb(__dev)) ) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 657 | |
| 658 | /* |
| 659 | * Callback functions. |
| 660 | */ |
| 661 | const struct rt2x00_ops *ops; |
| 662 | |
| 663 | /* |
| 664 | * IEEE80211 control structure. |
| 665 | */ |
| 666 | struct ieee80211_hw *hw; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 667 | struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS]; |
| 668 | enum ieee80211_band curr_band; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 669 | |
| 670 | /* |
| 671 | * rfkill structure for RF state switching support. |
| 672 | * This will only be compiled in when required. |
| 673 | */ |
| 674 | #ifdef CONFIG_RT2X00_LIB_RFKILL |
John W. Linville | 3480a58 | 2008-03-27 19:54:13 -0400 | [diff] [blame] | 675 | unsigned long rfkill_state; |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 676 | #define RFKILL_STATE_ALLOCATED 1 |
| 677 | #define RFKILL_STATE_REGISTERED 2 |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 678 | struct rfkill *rfkill; |
| 679 | struct input_polled_dev *poll_dev; |
| 680 | #endif /* CONFIG_RT2X00_LIB_RFKILL */ |
| 681 | |
| 682 | /* |
| 683 | * If enabled, the debugfs interface structures |
| 684 | * required for deregistration of debugfs. |
| 685 | */ |
| 686 | #ifdef CONFIG_RT2X00_LIB_DEBUGFS |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 687 | struct rt2x00debug_intf *debugfs_intf; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 688 | #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ |
| 689 | |
| 690 | /* |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 691 | * LED structure for changing the LED status |
| 692 | * by mac8011 or the kernel. |
| 693 | */ |
| 694 | #ifdef CONFIG_RT2X00_LIB_LEDS |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 695 | struct rt2x00_led led_radio; |
| 696 | struct rt2x00_led led_assoc; |
| 697 | struct rt2x00_led led_qual; |
| 698 | u16 led_mcu_reg; |
| 699 | #endif /* CONFIG_RT2X00_LIB_LEDS */ |
| 700 | |
| 701 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 702 | * Device flags. |
| 703 | * In these flags the current status and some |
| 704 | * of the device capabilities are stored. |
| 705 | */ |
| 706 | unsigned long flags; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 707 | |
| 708 | /* |
| 709 | * Chipset identification. |
| 710 | */ |
| 711 | struct rt2x00_chip chip; |
| 712 | |
| 713 | /* |
| 714 | * hw capability specifications. |
| 715 | */ |
| 716 | struct hw_mode_spec spec; |
| 717 | |
| 718 | /* |
Ivo van Doorn | addc81bd | 2007-10-13 16:26:23 +0200 | [diff] [blame] | 719 | * This is the default TX/RX antenna setup as indicated |
| 720 | * by the device's EEPROM. When mac80211 sets its |
| 721 | * antenna value to 0 we should be using these values. |
| 722 | */ |
| 723 | struct antenna_setup default_ant; |
| 724 | |
| 725 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 726 | * Register pointers |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 727 | * csr.base: CSR base register address. (PCI) |
| 728 | * csr.cache: CSR cache for usb_control_msg. (USB) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 729 | */ |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 730 | union csr { |
| 731 | void __iomem *base; |
| 732 | void *cache; |
| 733 | } csr; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 734 | |
| 735 | /* |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 736 | * Mutex to protect register accesses on USB devices. |
| 737 | * There are 2 reasons this is needed, one is to ensure |
| 738 | * use of the csr_cache (for USB devices) by one thread |
| 739 | * isn't corrupted by another thread trying to access it. |
| 740 | * The other is that access to BBP and RF registers |
| 741 | * require multiple BUS transactions and if another thread |
| 742 | * attempted to access one of those registers at the same |
| 743 | * time one of the writes could silently fail. |
| 744 | */ |
| 745 | struct mutex usb_cache_mutex; |
| 746 | |
| 747 | /* |
Ivo van Doorn | 3c4f208 | 2008-01-06 23:40:49 +0100 | [diff] [blame] | 748 | * Current packet filter configuration for the device. |
| 749 | * This contains all currently active FIF_* flags send |
| 750 | * to us by mac80211 during configure_filter(). |
| 751 | */ |
| 752 | unsigned int packet_filter; |
| 753 | |
| 754 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 755 | * Interface details: |
| 756 | * - Open ap interface count. |
| 757 | * - Open sta interface count. |
| 758 | * - Association count. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 759 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 760 | unsigned int intf_ap_count; |
| 761 | unsigned int intf_sta_count; |
| 762 | unsigned int intf_associated; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 763 | |
| 764 | /* |
| 765 | * Link quality |
| 766 | */ |
| 767 | struct link link; |
| 768 | |
| 769 | /* |
| 770 | * EEPROM data. |
| 771 | */ |
| 772 | __le16 *eeprom; |
| 773 | |
| 774 | /* |
| 775 | * Active RF register values. |
| 776 | * These are stored here so we don't need |
| 777 | * to read the rf registers and can directly |
| 778 | * use this value instead. |
| 779 | * This field should be accessed by using |
| 780 | * rt2x00_rf_read() and rt2x00_rf_write(). |
| 781 | */ |
| 782 | u32 *rf; |
| 783 | |
| 784 | /* |
Ivo van Doorn | b242e89 | 2007-11-15 23:41:31 +0100 | [diff] [blame] | 785 | * USB Max frame size (for rt2500usb & rt73usb). |
| 786 | */ |
| 787 | u16 usb_maxpacket; |
| 788 | |
| 789 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 790 | * Current TX power value. |
| 791 | */ |
| 792 | u16 tx_power; |
| 793 | |
| 794 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 795 | * Rssi <-> Dbm offset |
| 796 | */ |
| 797 | u8 rssi_offset; |
| 798 | |
| 799 | /* |
| 800 | * Frequency offset (for rt61pci & rt73usb). |
| 801 | */ |
| 802 | u8 freq_offset; |
| 803 | |
| 804 | /* |
| 805 | * Low level statistics which will have |
| 806 | * to be kept up to date while device is running. |
| 807 | */ |
| 808 | struct ieee80211_low_level_stats low_level_stats; |
| 809 | |
| 810 | /* |
| 811 | * RX configuration information. |
| 812 | */ |
| 813 | struct ieee80211_rx_status rx_status; |
| 814 | |
| 815 | /* |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 816 | * Scheduled work. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 817 | */ |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 818 | struct work_struct intf_work; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 819 | struct work_struct filter_work; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 820 | |
| 821 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 822 | * Data queue arrays for RX, TX and Beacon. |
| 823 | * The Beacon array also contains the Atim queue |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 824 | * if that is supported by the device. |
| 825 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 826 | int data_queues; |
| 827 | struct data_queue *rx; |
| 828 | struct data_queue *tx; |
| 829 | struct data_queue *bcn; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 830 | |
| 831 | /* |
| 832 | * Firmware image. |
| 833 | */ |
| 834 | const struct firmware *fw; |
| 835 | }; |
| 836 | |
| 837 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 838 | * Generic RF access. |
| 839 | * The RF is being accessed by word index. |
| 840 | */ |
Adam Baker | 0e14f6d | 2007-10-27 13:41:25 +0200 | [diff] [blame] | 841 | static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 842 | const unsigned int word, u32 *data) |
| 843 | { |
| 844 | *data = rt2x00dev->rf[word]; |
| 845 | } |
| 846 | |
Adam Baker | 0e14f6d | 2007-10-27 13:41:25 +0200 | [diff] [blame] | 847 | static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 848 | const unsigned int word, u32 data) |
| 849 | { |
| 850 | rt2x00dev->rf[word] = data; |
| 851 | } |
| 852 | |
| 853 | /* |
| 854 | * Generic EEPROM access. |
| 855 | * The EEPROM is being accessed by word index. |
| 856 | */ |
Adam Baker | 0e14f6d | 2007-10-27 13:41:25 +0200 | [diff] [blame] | 857 | static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 858 | const unsigned int word) |
| 859 | { |
| 860 | return (void *)&rt2x00dev->eeprom[word]; |
| 861 | } |
| 862 | |
Adam Baker | 0e14f6d | 2007-10-27 13:41:25 +0200 | [diff] [blame] | 863 | static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 864 | const unsigned int word, u16 *data) |
| 865 | { |
| 866 | *data = le16_to_cpu(rt2x00dev->eeprom[word]); |
| 867 | } |
| 868 | |
Adam Baker | 0e14f6d | 2007-10-27 13:41:25 +0200 | [diff] [blame] | 869 | static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 870 | const unsigned int word, u16 data) |
| 871 | { |
| 872 | rt2x00dev->eeprom[word] = cpu_to_le16(data); |
| 873 | } |
| 874 | |
| 875 | /* |
| 876 | * Chipset handlers |
| 877 | */ |
| 878 | static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev, |
| 879 | const u16 rt, const u16 rf, const u32 rev) |
| 880 | { |
| 881 | INFO(rt2x00dev, |
| 882 | "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n", |
| 883 | rt, rf, rev); |
| 884 | |
| 885 | rt2x00dev->chip.rt = rt; |
| 886 | rt2x00dev->chip.rf = rf; |
| 887 | rt2x00dev->chip.rev = rev; |
| 888 | } |
| 889 | |
| 890 | static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip) |
| 891 | { |
| 892 | return (chipset->rt == chip); |
| 893 | } |
| 894 | |
| 895 | static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip) |
| 896 | { |
| 897 | return (chipset->rf == chip); |
| 898 | } |
| 899 | |
Ivo van Doorn | 755a957 | 2007-11-12 15:02:22 +0100 | [diff] [blame] | 900 | static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 901 | { |
| 902 | return chipset->rev; |
| 903 | } |
| 904 | |
Ivo van Doorn | 755a957 | 2007-11-12 15:02:22 +0100 | [diff] [blame] | 905 | static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset, |
| 906 | const u32 rev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 907 | { |
Ivo van Doorn | 755a957 | 2007-11-12 15:02:22 +0100 | [diff] [blame] | 908 | return (((chipset->rev & 0xffff0) == rev) && |
| 909 | !!(chipset->rev & 0x0000f)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 910 | } |
| 911 | |
| 912 | /* |
| 913 | * Duration calculations |
| 914 | * The rate variable passed is: 100kbs. |
| 915 | * To convert from bytes to bits we multiply size with 8, |
| 916 | * then the size is multiplied with 10 to make the |
| 917 | * real rate -> rate argument correction. |
| 918 | */ |
| 919 | static inline u16 get_duration(const unsigned int size, const u8 rate) |
| 920 | { |
| 921 | return ((size * 8 * 10) / rate); |
| 922 | } |
| 923 | |
| 924 | static inline u16 get_duration_res(const unsigned int size, const u8 rate) |
| 925 | { |
| 926 | return ((size * 8 * 10) % rate); |
| 927 | } |
| 928 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 929 | /** |
Ivo van Doorn | e58c6ac | 2008-04-21 19:00:47 +0200 | [diff] [blame] | 930 | * rt2x00queue_get_queue - Convert queue index to queue pointer |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 931 | * @rt2x00dev: Pointer to &struct rt2x00_dev. |
Ivo van Doorn | e58c6ac | 2008-04-21 19:00:47 +0200 | [diff] [blame] | 932 | * @queue: rt2x00 queue index (see &enum data_queue_qid). |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 933 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 934 | struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | e58c6ac | 2008-04-21 19:00:47 +0200 | [diff] [blame] | 935 | const enum data_queue_qid queue); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 936 | |
| 937 | /** |
| 938 | * rt2x00queue_get_entry - Get queue entry where the given index points to. |
Ivo van Doorn | 9a46d44 | 2008-04-21 19:02:17 +0200 | [diff] [blame] | 939 | * @queue: Pointer to &struct data_queue from where we obtain the entry. |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 940 | * @index: Index identifier for obtaining the correct index. |
| 941 | */ |
| 942 | struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue, |
| 943 | enum queue_index index); |
| 944 | |
| 945 | /** |
| 946 | * rt2x00queue_index_inc - Index incrementation function |
| 947 | * @queue: Queue (&struct data_queue) to perform the action on. |
Ivo van Doorn | 9a46d44 | 2008-04-21 19:02:17 +0200 | [diff] [blame] | 948 | * @index: Index type (&enum queue_index) to perform the action on. |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 949 | * |
| 950 | * This function will increase the requested index on the queue, |
| 951 | * it will grab the appropriate locks and handle queue overflow events by |
| 952 | * resetting the index to the start of the queue. |
| 953 | */ |
| 954 | void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index); |
| 955 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 956 | |
| 957 | /* |
| 958 | * Interrupt context handlers. |
| 959 | */ |
| 960 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 961 | void rt2x00lib_txdone(struct queue_entry *entry, |
| 962 | struct txdone_entry_desc *txdesc); |
| 963 | void rt2x00lib_rxdone(struct queue_entry *entry, |
| 964 | struct rxdone_entry_desc *rxdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 965 | |
| 966 | /* |
| 967 | * TX descriptor initializer |
| 968 | */ |
| 969 | void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 970 | struct sk_buff *skb, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 971 | struct ieee80211_tx_control *control); |
| 972 | |
| 973 | /* |
| 974 | * mac80211 handlers. |
| 975 | */ |
| 976 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 977 | struct ieee80211_tx_control *control); |
| 978 | int rt2x00mac_start(struct ieee80211_hw *hw); |
| 979 | void rt2x00mac_stop(struct ieee80211_hw *hw); |
| 980 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, |
| 981 | struct ieee80211_if_init_conf *conf); |
| 982 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, |
| 983 | struct ieee80211_if_init_conf *conf); |
| 984 | int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 985 | int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
| 986 | struct ieee80211_vif *vif, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 987 | struct ieee80211_if_conf *conf); |
Ivo van Doorn | 3a643d2 | 2008-03-25 14:13:18 +0100 | [diff] [blame] | 988 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
| 989 | unsigned int changed_flags, |
| 990 | unsigned int *total_flags, |
| 991 | int mc_count, struct dev_addr_list *mc_list); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 992 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
| 993 | struct ieee80211_low_level_stats *stats); |
| 994 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, |
| 995 | struct ieee80211_tx_queue_stats *stats); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 996 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
| 997 | struct ieee80211_vif *vif, |
| 998 | struct ieee80211_bss_conf *bss_conf, |
| 999 | u32 changes); |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame^] | 1000 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1001 | const struct ieee80211_tx_queue_params *params); |
| 1002 | |
| 1003 | /* |
| 1004 | * Driver allocation handlers. |
| 1005 | */ |
| 1006 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev); |
| 1007 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev); |
| 1008 | #ifdef CONFIG_PM |
| 1009 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state); |
| 1010 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev); |
| 1011 | #endif /* CONFIG_PM */ |
| 1012 | |
| 1013 | #endif /* RT2X00_H */ |