Greg Kroah-Hartman | e642f09 | 2009-02-25 16:14:55 -0800 | [diff] [blame] | 1 | /* |
| 2 | ************************************************************************* |
| 3 | * Ralink Tech Inc. |
| 4 | * 5F., No.36, Taiyuan St., Jhubei City, |
| 5 | * Hsinchu County 302, |
| 6 | * Taiwan, R.O.C. |
| 7 | * |
| 8 | * (c) Copyright 2002-2007, Ralink Technology, Inc. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify * |
| 11 | * it under the terms of the GNU General Public License as published by * |
| 12 | * the Free Software Foundation; either version 2 of the License, or * |
| 13 | * (at your option) any later version. * |
| 14 | * * |
| 15 | * This program is distributed in the hope that it will be useful, * |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 18 | * GNU General Public License for more details. * |
| 19 | * * |
| 20 | * You should have received a copy of the GNU General Public License * |
| 21 | * along with this program; if not, write to the * |
| 22 | * Free Software Foundation, Inc., * |
| 23 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
| 24 | * * |
| 25 | ************************************************************************* |
| 26 | |
| 27 | Module Name: |
| 28 | ap_dfs.c |
| 29 | |
| 30 | Abstract: |
| 31 | Support DFS function. |
| 32 | |
| 33 | Revision History: |
| 34 | Who When What |
| 35 | -------- ---------- ---------------------------------------------- |
| 36 | Fonchi 03-12-2007 created |
| 37 | */ |
| 38 | |
| 39 | #include "../rt_config.h" |
| 40 | |
| 41 | typedef struct _RADAR_DURATION_TABLE |
| 42 | { |
| 43 | ULONG RDDurRegion; |
| 44 | ULONG RadarSignalDuration; |
| 45 | ULONG Tolerance; |
| 46 | } RADAR_DURATION_TABLE, *PRADAR_DURATION_TABLE; |
| 47 | |
| 48 | |
| 49 | static UCHAR RdIdleTimeTable[MAX_RD_REGION][4] = |
| 50 | { |
| 51 | {9, 250, 250, 250}, // CE |
| 52 | {4, 250, 250, 250}, // FCC |
| 53 | {4, 250, 250, 250}, // JAP |
| 54 | {15, 250, 250, 250}, // JAP_W53 |
| 55 | {4, 250, 250, 250} // JAP_W56 |
| 56 | }; |
| 57 | |
| 58 | /* |
| 59 | ======================================================================== |
| 60 | |
| 61 | Routine Description: |
| 62 | Bbp Radar detection routine |
| 63 | |
| 64 | Arguments: |
| 65 | pAd Pointer to our adapter |
| 66 | |
| 67 | Return Value: |
| 68 | |
| 69 | ======================================================================== |
| 70 | */ |
| 71 | VOID BbpRadarDetectionStart( |
| 72 | IN PRTMP_ADAPTER pAd) |
| 73 | { |
| 74 | UINT8 RadarPeriod; |
| 75 | |
| 76 | RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 114, 0x02); |
| 77 | RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 121, 0x20); |
| 78 | RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 122, 0x00); |
| 79 | RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 123, 0x08/*0x80*/); |
| 80 | RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 124, 0x28); |
| 81 | RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, 125, 0xff); |
| 82 | |
| 83 | RadarPeriod = ((UINT)RdIdleTimeTable[pAd->CommonCfg.RadarDetect.RDDurRegion][0] + (UINT)pAd->CommonCfg.RadarDetect.DfsSessionTime) < 250 ? |
| 84 | (RdIdleTimeTable[pAd->CommonCfg.RadarDetect.RDDurRegion][0] + pAd->CommonCfg.RadarDetect.DfsSessionTime) : 250; |
| 85 | |
| 86 | RTMP_IO_WRITE8(pAd, 0x7020, 0x1d); |
| 87 | RTMP_IO_WRITE8(pAd, 0x7021, 0x40); |
| 88 | |
| 89 | RadarDetectionStart(pAd, 0, RadarPeriod); |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | /* |
| 94 | ======================================================================== |
| 95 | |
| 96 | Routine Description: |
| 97 | Bbp Radar detection routine |
| 98 | |
| 99 | Arguments: |
| 100 | pAd Pointer to our adapter |
| 101 | |
| 102 | Return Value: |
| 103 | |
| 104 | ======================================================================== |
| 105 | */ |
| 106 | VOID BbpRadarDetectionStop( |
| 107 | IN PRTMP_ADAPTER pAd) |
| 108 | { |
| 109 | RTMP_IO_WRITE8(pAd, 0x7020, 0x1d); |
| 110 | RTMP_IO_WRITE8(pAd, 0x7021, 0x60); |
| 111 | |
| 112 | RadarDetectionStop(pAd); |
| 113 | return; |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | ======================================================================== |
| 118 | |
| 119 | Routine Description: |
| 120 | Radar detection routine |
| 121 | |
| 122 | Arguments: |
| 123 | pAd Pointer to our adapter |
| 124 | |
| 125 | Return Value: |
| 126 | |
| 127 | ======================================================================== |
| 128 | */ |
| 129 | VOID RadarDetectionStart( |
| 130 | IN PRTMP_ADAPTER pAd, |
| 131 | IN BOOLEAN CTSProtect, |
| 132 | IN UINT8 CTSPeriod) |
| 133 | { |
| 134 | UINT8 DfsActiveTime = (pAd->CommonCfg.RadarDetect.DfsSessionTime & 0x1f); |
| 135 | UINT8 CtsProtect = (CTSProtect == 1) ? 0x02 : 0x01; // CTS protect. |
| 136 | |
| 137 | if (CTSProtect != 0) |
| 138 | { |
| 139 | switch(pAd->CommonCfg.RadarDetect.RDDurRegion) |
| 140 | { |
| 141 | case FCC: |
| 142 | case JAP_W56: |
| 143 | CtsProtect = 0x03; |
| 144 | break; |
| 145 | |
| 146 | case CE: |
| 147 | case JAP_W53: |
| 148 | default: |
| 149 | CtsProtect = 0x02; |
| 150 | break; |
| 151 | } |
| 152 | } |
| 153 | else |
| 154 | CtsProtect = 0x01; |
| 155 | |
| 156 | |
| 157 | // send start-RD with CTS protection command to MCU |
| 158 | // highbyte [7] reserve |
| 159 | // highbyte [6:5] 0x: stop Carrier/Radar detection |
| 160 | // highbyte [10]: Start Carrier/Radar detection without CTS protection, 11: Start Carrier/Radar detection with CTS protection |
| 161 | // highbyte [4:0] Radar/carrier detection duration. In 1ms. |
| 162 | |
| 163 | // lowbyte [7:0] Radar/carrier detection period, in 1ms. |
| 164 | AsicSendCommandToMcu(pAd, 0x60, 0xff, CTSPeriod, DfsActiveTime | (CtsProtect << 5)); |
| 165 | //AsicSendCommandToMcu(pAd, 0x63, 0xff, 10, 0); |
| 166 | |
| 167 | return; |
| 168 | } |
| 169 | |
| 170 | /* |
| 171 | ======================================================================== |
| 172 | |
| 173 | Routine Description: |
| 174 | Radar detection routine |
| 175 | |
| 176 | Arguments: |
| 177 | pAd Pointer to our adapter |
| 178 | |
| 179 | Return Value: |
| 180 | TRUE Found radar signal |
| 181 | FALSE Not found radar signal |
| 182 | |
| 183 | ======================================================================== |
| 184 | */ |
| 185 | VOID RadarDetectionStop( |
| 186 | IN PRTMP_ADAPTER pAd) |
| 187 | { |
| 188 | DBGPRINT(RT_DEBUG_TRACE,("RadarDetectionStop.\n")); |
| 189 | AsicSendCommandToMcu(pAd, 0x60, 0xff, 0x00, 0x00); // send start-RD with CTS protection command to MCU |
| 190 | |
| 191 | return; |
| 192 | } |
| 193 | |
| 194 | /* |
| 195 | ======================================================================== |
| 196 | |
| 197 | Routine Description: |
| 198 | Radar channel check routine |
| 199 | |
| 200 | Arguments: |
| 201 | pAd Pointer to our adapter |
| 202 | |
| 203 | Return Value: |
| 204 | TRUE need to do radar detect |
| 205 | FALSE need not to do radar detect |
| 206 | |
| 207 | ======================================================================== |
| 208 | */ |
| 209 | BOOLEAN RadarChannelCheck( |
| 210 | IN PRTMP_ADAPTER pAd, |
| 211 | IN UCHAR Ch) |
| 212 | { |
| 213 | #if 1 |
| 214 | INT i; |
| 215 | BOOLEAN result = FALSE; |
| 216 | |
| 217 | for (i=0; i<pAd->ChannelListNum; i++) |
| 218 | { |
| 219 | if (Ch == pAd->ChannelList[i].Channel) |
| 220 | { |
| 221 | result = pAd->ChannelList[i].DfsReq; |
| 222 | break; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | return result; |
| 227 | #else |
| 228 | INT i; |
| 229 | UCHAR Channel[15]={52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140}; |
| 230 | |
| 231 | for (i=0; i<15; i++) |
| 232 | { |
| 233 | if (Ch == Channel[i]) |
| 234 | { |
| 235 | break; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | if (i != 15) |
| 240 | return TRUE; |
| 241 | else |
| 242 | return FALSE; |
| 243 | #endif |
| 244 | } |
| 245 | |
| 246 | ULONG JapRadarType( |
| 247 | IN PRTMP_ADAPTER pAd) |
| 248 | { |
| 249 | ULONG i; |
| 250 | const UCHAR Channel[15]={52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140}; |
| 251 | |
| 252 | if (pAd->CommonCfg.RadarDetect.RDDurRegion != JAP) |
| 253 | { |
| 254 | return pAd->CommonCfg.RadarDetect.RDDurRegion; |
| 255 | } |
| 256 | |
| 257 | for (i=0; i<15; i++) |
| 258 | { |
| 259 | if (pAd->CommonCfg.Channel == Channel[i]) |
| 260 | { |
| 261 | break; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | if (i < 4) |
| 266 | return JAP_W53; |
| 267 | else if (i < 15) |
| 268 | return JAP_W56; |
| 269 | else |
| 270 | return JAP; // W52 |
| 271 | |
| 272 | } |
| 273 | |
| 274 | ULONG RTMPBbpReadRadarDuration( |
| 275 | IN PRTMP_ADAPTER pAd) |
| 276 | { |
| 277 | UINT8 byteValue = 0; |
| 278 | ULONG result; |
| 279 | |
| 280 | BBP_IO_READ8_BY_REG_ID(pAd, BBP_R115, &byteValue); |
| 281 | |
| 282 | result = 0; |
| 283 | switch (byteValue) |
| 284 | { |
| 285 | case 1: // radar signal detected by pulse mode. |
| 286 | case 2: // radar signal detected by width mode. |
| 287 | result = RTMPReadRadarDuration(pAd); |
| 288 | break; |
| 289 | |
| 290 | case 0: // No radar signal. |
| 291 | default: |
| 292 | |
| 293 | result = 0; |
| 294 | break; |
| 295 | } |
| 296 | |
| 297 | return result; |
| 298 | } |
| 299 | |
| 300 | ULONG RTMPReadRadarDuration( |
| 301 | IN PRTMP_ADAPTER pAd) |
| 302 | { |
| 303 | ULONG result = 0; |
| 304 | |
Greg Kroah-Hartman | e642f09 | 2009-02-25 16:14:55 -0800 | [diff] [blame] | 305 | return result; |
| 306 | |
| 307 | } |
| 308 | |
| 309 | VOID RTMPCleanRadarDuration( |
| 310 | IN PRTMP_ADAPTER pAd) |
| 311 | { |
| 312 | return; |
| 313 | } |
| 314 | |
| 315 | /* |
| 316 | ======================================================================== |
| 317 | Routine Description: |
| 318 | Radar wave detection. The API should be invoke each second. |
| 319 | |
| 320 | Arguments: |
| 321 | pAd - Adapter pointer |
| 322 | |
| 323 | Return Value: |
| 324 | None |
| 325 | |
| 326 | ======================================================================== |
| 327 | */ |
| 328 | VOID ApRadarDetectPeriodic( |
| 329 | IN PRTMP_ADAPTER pAd) |
| 330 | { |
| 331 | INT i; |
| 332 | |
| 333 | pAd->CommonCfg.RadarDetect.InServiceMonitorCount++; |
| 334 | |
| 335 | for (i=0; i<pAd->ChannelListNum; i++) |
| 336 | { |
| 337 | if (pAd->ChannelList[i].RemainingTimeForUse > 0) |
| 338 | { |
| 339 | pAd->ChannelList[i].RemainingTimeForUse --; |
| 340 | if ((pAd->Mlme.PeriodicRound%5) == 0) |
| 341 | { |
| 342 | DBGPRINT(RT_DEBUG_TRACE, ("RadarDetectPeriodic - ch=%d, RemainingTimeForUse=%d\n", pAd->ChannelList[i].Channel, pAd->ChannelList[i].RemainingTimeForUse)); |
| 343 | } |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | //radar detect |
| 348 | if ((pAd->CommonCfg.Channel > 14) |
| 349 | && (pAd->CommonCfg.bIEEE80211H == 1) |
| 350 | && RadarChannelCheck(pAd, pAd->CommonCfg.Channel)) |
| 351 | { |
| 352 | RadarDetectPeriodic(pAd); |
| 353 | } |
| 354 | |
| 355 | return; |
| 356 | } |
| 357 | |
| 358 | // Periodic Radar detection, switch channel will occur in RTMPHandleTBTTInterrupt() |
| 359 | // Before switch channel, driver needs doing channel switch announcement. |
| 360 | VOID RadarDetectPeriodic( |
| 361 | IN PRTMP_ADAPTER pAd) |
| 362 | { |
| 363 | // need to check channel availability, after switch channel |
| 364 | if (pAd->CommonCfg.RadarDetect.RDMode != RD_SILENCE_MODE) |
| 365 | return; |
| 366 | |
| 367 | // channel availability check time is 60sec, use 65 for assurance |
| 368 | if (pAd->CommonCfg.RadarDetect.RDCount++ > pAd->CommonCfg.RadarDetect.ChMovingTime) |
| 369 | { |
| 370 | DBGPRINT(RT_DEBUG_TRACE, ("Not found radar signal, start send beacon and radar detection in service monitor\n\n")); |
| 371 | BbpRadarDetectionStop(pAd); |
| 372 | AsicEnableBssSync(pAd); |
| 373 | pAd->CommonCfg.RadarDetect.RDMode = RD_NORMAL_MODE; |
| 374 | |
| 375 | |
| 376 | return; |
| 377 | } |
| 378 | |
| 379 | return; |
| 380 | } |
| 381 | |
| 382 | |
| 383 | /* |
| 384 | ========================================================================== |
| 385 | Description: |
| 386 | change channel moving time for DFS testing. |
| 387 | |
| 388 | Arguments: |
| 389 | pAdapter Pointer to our adapter |
| 390 | wrq Pointer to the ioctl argument |
| 391 | |
| 392 | Return Value: |
| 393 | None |
| 394 | |
| 395 | Note: |
| 396 | Usage: |
| 397 | 1.) iwpriv ra0 set ChMovTime=[value] |
| 398 | ========================================================================== |
| 399 | */ |
| 400 | INT Set_ChMovingTime_Proc( |
| 401 | IN PRTMP_ADAPTER pAd, |
| 402 | IN PUCHAR arg) |
| 403 | { |
| 404 | UINT8 Value; |
| 405 | |
| 406 | Value = simple_strtol(arg, 0, 10); |
| 407 | |
| 408 | pAd->CommonCfg.RadarDetect.ChMovingTime = Value; |
| 409 | |
Alessio Igor Bogani | d75b81a | 2009-03-24 19:30:26 +0100 | [diff] [blame] | 410 | DBGPRINT(RT_DEBUG_TRACE, ("%s:: %d\n", __func__, |
Greg Kroah-Hartman | e642f09 | 2009-02-25 16:14:55 -0800 | [diff] [blame] | 411 | pAd->CommonCfg.RadarDetect.ChMovingTime)); |
| 412 | |
| 413 | return TRUE; |
| 414 | } |
| 415 | |
| 416 | INT Set_LongPulseRadarTh_Proc( |
| 417 | IN PRTMP_ADAPTER pAd, |
| 418 | IN PUCHAR arg) |
| 419 | { |
| 420 | UINT8 Value; |
| 421 | |
| 422 | Value = simple_strtol(arg, 0, 10) > 10 ? 10 : simple_strtol(arg, 0, 10); |
| 423 | |
| 424 | pAd->CommonCfg.RadarDetect.LongPulseRadarTh = Value; |
| 425 | |
Alessio Igor Bogani | d75b81a | 2009-03-24 19:30:26 +0100 | [diff] [blame] | 426 | DBGPRINT(RT_DEBUG_TRACE, ("%s:: %d\n", __func__, |
Greg Kroah-Hartman | e642f09 | 2009-02-25 16:14:55 -0800 | [diff] [blame] | 427 | pAd->CommonCfg.RadarDetect.LongPulseRadarTh)); |
| 428 | |
| 429 | return TRUE; |
| 430 | } |
| 431 | |
| 432 | |