| /* |
| * Copyright (c) 2011-2013, 2016 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /* |
| * |
| * This file pmmAP.cc contains AP PM functions |
| * |
| * Author: Sandesh Goel |
| * Date: 02/25/02 |
| * History:- |
| * Date Modified by Modification Information |
| * -------------------------------------------------------------------- |
| * |
| */ |
| |
| #include "sirCommon.h" |
| |
| #include "aniGlobal.h" |
| |
| #include "schApi.h" |
| #include "limApi.h" |
| #include "cfgApi.h" |
| #include "wni_cfg.h" |
| #include "pmmApi.h" |
| #include "pmmDebug.h" |
| |
| /** |
| * pmmGenerateTIM |
| * |
| * FUNCTION: |
| * Generate TIM |
| * |
| * LOGIC: |
| * |
| * ASSUMPTIONS: |
| * |
| * NOTE: |
| * |
| * @param pMac pointer to global mac structure |
| * @param **pPtr pointer to the buffer, where the TIM bit is to be written. |
| * @param *timLength pointer to limLength, which needs to be returned. |
| * @return None |
| */ |
| void pmmGenerateTIM(tpAniSirGlobal pMac, tANI_U8 **pPtr, tANI_U16 *timLength, tANI_U8 dtimPeriod) |
| { |
| tANI_U8 *ptr = *pPtr; |
| tANI_U32 val = 0; |
| tANI_U32 minAid = 1; // Always start with AID 1 as minimum |
| tANI_U32 maxAid = HAL_NUM_STA; |
| |
| |
| // Generate partial virtual bitmap |
| tANI_U8 N1 = minAid / 8; |
| tANI_U8 N2 = maxAid / 8; |
| if (N1 & 1) N1--; |
| |
| *timLength = N2 - N1 + 4; |
| val = dtimPeriod; |
| |
| /* |
| * 09/23/2011 - ASW team decision; |
| * Write 0xFF to firmware's field to detect firmware's mal-function early. |
| * DTIM count and bitmap control usually cannot be 0xFF, so it is easy to know that |
| * firmware never updated DTIM count/bitmap control field after host driver downloaded |
| * beacon template if end-user complaints that DTIM count and bitmapControl is 0xFF. |
| */ |
| *ptr++ = SIR_MAC_TIM_EID; |
| *ptr++ = (tANI_U8)(*timLength); |
| *ptr++ = 0xFF; // location for dtimCount. will be filled in by FW. |
| *ptr++ = (tANI_U8)val; |
| |
| *ptr++ = 0xFF; // location for bitmap control. will be filled in by FW. |
| ptr += (N2 - N1 + 1); |
| |
| PELOG2(sirDumpBuf(pMac, SIR_PMM_MODULE_ID, LOG2, *pPtr, (*timLength)+2);) |
| *pPtr = ptr; |
| } |