release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/otus/80211core/freqctrl.c

   1 /*
   2  * Copyright (c) 2007-2008 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "cprecomp.h"
  18
  19 /* zfAddFreqChangeReq should be called inside the critical section */
  20 static void zfAddFreqChangeReq(zdev_t* dev, u16_t frequency, u8_t bw40,
  21         u8_t extOffset, zfpFreqChangeCompleteCb cb)
  22 {
  23     zmw_get_wlan_dev(dev);
  24
  25 //printk("zfAddFreqChangeReq  freqReqQueueTail%d\n", wd->freqCtrl.freqReqQueueTail);
  26     wd->freqCtrl.freqReqQueue[wd->freqCtrl.freqReqQueueTail] = frequency;
  27     wd->freqCtrl.freqReqBw40[wd->freqCtrl.freqReqQueueTail] = bw40;
  28     wd->freqCtrl.freqReqExtOffset[wd->freqCtrl.freqReqQueueTail] = extOffset;
  29     wd->freqCtrl.freqChangeCompCb[wd->freqCtrl.freqReqQueueTail] = cb;
  30     wd->freqCtrl.freqReqQueueTail++;
  31     if ( wd->freqCtrl.freqReqQueueTail >= ZM_MAX_FREQ_REQ_QUEUE )
  32     {
  33         wd->freqCtrl.freqReqQueueTail = 0;
  34     }
  35 }
  36
  37 void zfCoreSetFrequencyV2(zdev_t* dev, u16_t frequency, zfpFreqChangeCompleteCb cb)
  38 {
  39     zfCoreSetFrequencyEx(dev, frequency, 0, 0, cb);
  40 }
  41
  42 void zfCoreSetFrequencyExV2(zdev_t* dev, u16_t frequency, u8_t bw40,
  43         u8_t extOffset, zfpFreqChangeCompleteCb cb, u8_t forceSetFreq)
  44 {
  45     u8_t setFreqImmed = 0;
  46     u8_t initRF = 0;
  47     zmw_get_wlan_dev(dev);
  48     zmw_declare_for_critical_section();
  49
  50     zm_msg1_scan(ZM_LV_1, "Freq=", frequency);
  51
  52     zmw_enter_critical_section(dev);
  53     if ((wd->sta.currentFrequency == frequency)
  54         && (wd->sta.currentBw40 == bw40)
  55         && (wd->sta.currentExtOffset == extOffset))
  56     {
  57         if ( forceSetFreq == 0 && wd->sta.flagFreqChanging == 0 )
  58         {
  59             goto done;
  60         }
  61     }
  62 #ifdef ZM_FB50
  63     /*if(frequency!=2437) {
  64         zmw_leave_critical_section(dev);
  65         return;
  66     }*/
  67 #endif
  68
  69     zfAddFreqChangeReq(dev, frequency, bw40, extOffset, cb);
  70
  71 //    zm_assert( wd->sta.flagFreqChanging == 0 );
  72     //wd->sta.flagFreqChanging = 1;
  73     if ( wd->sta.flagFreqChanging == 0 )
  74     {
  75         if ((wd->sta.currentBw40 != bw40) || (wd->sta.currentExtOffset != extOffset))
  76         {
  77             initRF = 1;
  78         }
  79         wd->sta.currentFrequency = frequency;
  80         wd->sta.currentBw40 = bw40;
  81         wd->sta.currentExtOffset = extOffset;
  82         setFreqImmed = 1;
  83     }
  84     wd->sta.flagFreqChanging++;
  85
  86     zmw_leave_critical_section(dev);
  87
  88     if ( setFreqImmed )
  89     {
  90         //zfHpSetFrequency(dev, frequency, 0);
  91         if ( forceSetFreq )
  92         { // Cold reset to reset the frequency after scanning !
  93             zm_debug_msg0("#6_1 20070917");
  94             zm_debug_msg0("It is happen!!! No error message");
  95             zfHpSetFrequencyEx(dev, frequency, bw40, extOffset, 2);
  96         }
  97         else
  98         {
  99         zfHpSetFrequencyEx(dev, frequency, bw40, extOffset, initRF);
 100         }
 101
 102         if (    zfStaIsConnected(dev)
 103              && (frequency == wd->frequency)) {
 104             wd->sta.connPowerInHalfDbm = zfHpGetTransmitPower(dev);
 105         }
 106     }
 107     return;
 108
 109 done:
 110     zmw_leave_critical_section(dev);
 111
 112     if ( cb != NULL )
 113     {
 114         cb(dev);
 115     }
 116     zfPushVtxq(dev);
 117     return;
 118 }
 119
 120 void zfCoreSetFrequencyEx(zdev_t* dev, u16_t frequency, u8_t bw40,
 121         u8_t extOffset, zfpFreqChangeCompleteCb cb)
 122 {
 123     zfCoreSetFrequencyExV2(dev, frequency, bw40, extOffset, cb, 0);
 124 }
 125
 126 void zfCoreSetFrequency(zdev_t* dev, u16_t frequency)
 127 {
 128     zfCoreSetFrequencyV2(dev, frequency, NULL);
 129 }
 130
 131 /* zfRemoveFreqChangeReq SHOULD NOT be called inside the critical section */
 132 static void zfRemoveFreqChangeReq(zdev_t* dev)
 133 {
 134     zfpFreqChangeCompleteCb cb = NULL;
 135     u16_t frequency;
 136     u8_t bw40;
 137     u8_t extOffset;
 138     u16_t compFreq = 0;
 139     u8_t compBw40 = 0;
 140     u8_t compExtOffset = 0;
 141
 142     zmw_get_wlan_dev(dev);
 143     zmw_declare_for_critical_section();
 144
 145     zmw_enter_critical_section(dev);
 146
 147     if (wd->freqCtrl.freqReqQueueHead != wd->freqCtrl.freqReqQueueTail)
 148     {
 149         zm_msg1_scan(ZM_LV_1, "Freq=",
 150                 wd->freqCtrl.freqReqQueue[wd->freqCtrl.freqReqQueueHead]);
 151         compFreq = wd->freqCtrl.freqReqQueue[wd->freqCtrl.freqReqQueueHead];
 152         compBw40 = wd->freqCtrl.freqReqBw40[wd->freqCtrl.freqReqQueueHead];
 153         compExtOffset = wd->freqCtrl.freqReqExtOffset[wd->freqCtrl.freqReqQueueHead];
 154
 155         wd->freqCtrl.freqReqQueue[wd->freqCtrl.freqReqQueueHead] = 0;
 156         cb = wd->freqCtrl.freqChangeCompCb[wd->freqCtrl.freqReqQueueHead];
 157         wd->freqCtrl.freqReqQueueHead++;
 158         if ( wd->freqCtrl.freqReqQueueHead >= ZM_MAX_FREQ_REQ_QUEUE )
 159         {
 160             wd->freqCtrl.freqReqQueueHead = 0;
 161         }
 162     }
 163     zmw_leave_critical_section(dev);
 164
 165     if ( cb != NULL )
 166     {
 167         cb(dev);
 168     }
 169
 170     zmw_enter_critical_section(dev);
 171     while (wd->freqCtrl.freqReqQueue[wd->freqCtrl.freqReqQueueHead] != 0)
 172     {
 173         frequency = wd->freqCtrl.freqReqQueue[wd->freqCtrl.freqReqQueueHead];
 174         bw40 = wd->freqCtrl.freqReqBw40[wd->freqCtrl.freqReqQueueHead];
 175         extOffset=wd->freqCtrl.freqReqExtOffset[wd->freqCtrl.freqReqQueueHead];
 176         if ((compFreq == frequency)
 177             && (compBw40 == bw40)
 178             && (compExtOffset == extOffset))
 179         {
 180             /* Duplicated frequency command */
 181             zm_msg1_scan(ZM_LV_1, "Duplicated Freq=", frequency);
 182
 183             cb = wd->freqCtrl.freqChangeCompCb[wd->freqCtrl.freqReqQueueHead];
 184             wd->freqCtrl.freqReqQueue[wd->freqCtrl.freqReqQueueHead] = 0;
 185             wd->freqCtrl.freqReqQueueHead++;
 186
 187             if ( wd->freqCtrl.freqReqQueueHead >= ZM_MAX_FREQ_REQ_QUEUE )
 188             {
 189                 wd->freqCtrl.freqReqQueueHead = 0;
 190             }
 191
 192             if ( wd->sta.flagFreqChanging != 0 )
 193             {
 194                 wd->sta.flagFreqChanging--;
 195             }
 196
 197             zmw_leave_critical_section(dev);
 198             if ( cb != NULL )
 199             {
 200                 cb(dev);
 201             }
 202             zmw_enter_critical_section(dev);
 203         }
 204         else
 205         {
 206             u8_t    initRF = 0;
 207             if ((wd->sta.currentBw40 != bw40) || (wd->sta.currentExtOffset != extOffset))
 208             {
 209                 initRF = 1;
 210             }
 211             wd->sta.currentFrequency = frequency;
 212             wd->sta.currentBw40 = bw40;
 213             wd->sta.currentExtOffset = extOffset;
 214             zmw_leave_critical_section(dev);
 215
 216             zfHpSetFrequencyEx(dev, frequency, bw40, extOffset, initRF);
 217             if (    zfStaIsConnected(dev)
 218                 && (frequency == wd->frequency)) {
 219                 wd->sta.connPowerInHalfDbm = zfHpGetTransmitPower(dev);
 220             }
 221
 222             return;
 223         }
 224     }
 225     zmw_leave_critical_section(dev);
 226
 227     return;
 228 }
 229
 230 void zfCoreSetFrequencyComplete(zdev_t* dev)
 231 {
 232     zmw_get_wlan_dev(dev);
 233     zmw_declare_for_critical_section();
 234
 235     zm_msg1_scan(ZM_LV_1, "flagFreqChanging=", wd->sta.flagFreqChanging);
 236
 237     zmw_enter_critical_section(dev);
 238     //wd->sta.flagFreqChanging = 0;
 239     if ( wd->sta.flagFreqChanging != 0 )
 240     {
 241         wd->sta.flagFreqChanging--;
 242     }
 243
 244     zmw_leave_critical_section(dev);
 245
 246     zfRemoveFreqChangeReq(dev);
 247
 248     zfPushVtxq(dev);
 249     return;
 250 }
 251
 252 void zfReSetCurrentFrequency(zdev_t* dev)
 253 {
 254     zmw_get_wlan_dev(dev);
 255
 256     zm_debug_msg0("It is happen!!! No error message");
 257
 258     zfCoreSetFrequencyExV2(dev, wd->frequency, 0, 0, NULL, 1);
 259 }