| /* |
| * Copyright (c) 2012-2013, 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. |
| */ |
| /* |
| * Copyright (c) 2012, 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. |
| */ |
| |
| /**========================================================================= |
| * |
| * \file wlan_qct_dti_bd.c |
| * |
| * \brief Datapath utilities file. |
| * |
| * WLAN Device Abstraction layer External API for Dataservice |
| * DESCRIPTION |
| * This file contains the external API implemntation exposed by the |
| * wlan device abstarction layer module. |
| * |
| * Copyright (c) 2008 QUALCOMM Incorporated. All Rights Reserved. |
| * Qualcomm Confidential and Proprietary |
| */ |
| |
| #include "wlan_qct_wdi.h" |
| #include "wlan_qct_wdi_ds.h" |
| #include "wlan_qct_wdi_ds_i.h" |
| #include "wlan_qct_wdi_dts.h" |
| #include "wlan_qct_wdi_dp.h" |
| #include "wlan_qct_pal_type.h" |
| #include "wlan_qct_pal_status.h" |
| #include "wlan_qct_pal_api.h" |
| #include "wlan_qct_pal_packet.h" |
| |
| |
| |
| /*========================================================================== |
| * |
| FUNCTION WDI_DS_PrepareBDHeader |
| |
| DESCRIPTION |
| function for preparing BD header before HAL processing. |
| |
| PARAMETERS |
| |
| IN |
| palPacket: PAL packet pointer |
| |
| |
| RETURN VALUE |
| No return. |
| |
| SIDE EFFECTS |
| |
| ============================================================================*/ |
| void |
| WDI_DS_PrepareBDHeader (wpt_packet* palPacket, |
| wpt_uint8 ucDisableHWFrmXtl, wpt_uint8 alignment) |
| { |
| void* pvBDHeader; |
| wpt_uint8 ucHeaderOffset; |
| wpt_uint8 ucHeaderLen; |
| wpt_uint8 ucQosEnabled; |
| wpt_uint8 ucWDSEnabled; |
| wpt_uint32 ucMpduLen; |
| wpt_uint32 ucPktLen; |
| WDI_DS_TxMetaInfoType *pTxMetadata; |
| |
| |
| /* Extract reuqired information from Metadata */ |
| pvBDHeader = WPAL_PACKET_GET_BD_POINTER(palPacket); |
| pTxMetadata = WDI_DS_ExtractTxMetaData(palPacket); |
| ucQosEnabled = pTxMetadata->qosEnabled; |
| ucWDSEnabled = pTxMetadata->fenableWDS; |
| |
| WPAL_PACKET_SET_BD_LENGTH(palPacket, WDI_TX_BD_HEADER_SIZE); |
| |
| /*--------------------------------------------------------------------- |
| Fill MPDU info fields: |
| - MPDU data start offset |
| - MPDU header start offset |
| - MPDU header length |
| - MPDU length - this is a 16b field - needs swapping |
| --------------------------------------------------------------------*/ |
| |
| if ( ucDisableHWFrmXtl ) { |
| ucHeaderOffset = WDI_TX_BD_HEADER_SIZE; |
| ucHeaderLen = WDI_802_11_HEADER_LEN; |
| if ( 0 != ucQosEnabled ) { |
| ucHeaderLen += WDI_802_11_HEADER_QOS_CTL; |
| } |
| if ( 0 != ucWDSEnabled) { |
| ucHeaderLen += WDI_802_11_HEADER_ADDR4_LEN; |
| } |
| } else { |
| ucHeaderOffset = WDI_TX_BD_HEADER_SIZE+WDI_802_11_MAX_HEADER_LEN; |
| ucHeaderLen = WDI_802_3_HEADER_LEN; |
| } |
| |
| WDI_TX_BD_SET_MPDU_HEADER_LEN( pvBDHeader, ucHeaderLen); |
| WDI_TX_BD_SET_MPDU_HEADER_OFFSET( pvBDHeader, ucHeaderOffset); |
| WDI_TX_BD_SET_MPDU_DATA_OFFSET( pvBDHeader, |
| ucHeaderOffset + ucHeaderLen + alignment); |
| |
| // pkt length from PAL API. Need to change in case of HW FT used |
| ucPktLen = wpalPacketGetLength( palPacket ); // This includes BD length |
| /** This is the length (in number of bytes) of the entire MPDU |
| (header and data). Note that the length INCLUDES FCS field. */ |
| ucMpduLen = ucPktLen - WPAL_PACKET_GET_BD_LENGTH( palPacket ); |
| WDI_TX_BD_SET_MPDU_LEN( pvBDHeader, ucMpduLen ); |
| |
| DTI_TRACE( DTI_TRACE_LEVEL_INFO, |
| "WLAN DTI: VALUES ARE HLen=%x Hoff=%x doff=%x len=%x ex=%d", |
| ucHeaderLen, ucHeaderOffset, |
| (ucHeaderOffset + ucHeaderLen + alignment), |
| pTxMetadata->fPktlen, alignment); |
| |
| }/* WDI_DS_PrepareBDHeader */ |
| |
| /*========================================================================== |
| * |
| FUNCTIONS WDI_DS_MemPoolXXX |
| |
| DESCRIPTION |
| APIs for managing the BD header memory pool |
| PARAMETERS |
| |
| IN |
| WDI_DS_BdMemPoolType: Memory pool pointer |
| |
| |
| |
| ============================================================================*/ |
| |
| /* |
| * Create a memory pool which is DMA capabale |
| */ |
| WDI_Status WDI_DS_MemPoolCreate(WDI_DS_BdMemPoolType *memPool, wpt_uint8 chunkSize, |
| wpt_uint8 numChunks) |
| { |
| wpt_uint8 staLoop; |
| |
| //Allocate all the max size and align them to a double word boundary. The first 8 bytes are control bytes. |
| memPool->numChunks = 0; |
| memPool->chunkSize = chunkSize + 16 - (chunkSize%8); |
| memPool->pVirtBaseAddress = wpalDmaMemoryAllocate((numChunks * memPool->chunkSize), |
| &(memPool->pPhysBaseAddress)); |
| |
| if( memPool->pVirtBaseAddress == 0) |
| return WDI_STATUS_E_FAILURE; |
| |
| memPool->AllocationBitmap = (wpt_uint32*)wpalMemoryAllocate( (numChunks/32 + 1) * sizeof(wpt_uint32)); |
| if( NULL == memPool->AllocationBitmap) |
| return WDI_STATUS_E_FAILURE; |
| wpalMemoryZero(memPool->AllocationBitmap, (numChunks/32+1)*sizeof(wpt_uint32)); |
| |
| //Initialize resource infor per STA |
| for(staLoop = 0; staLoop < WDI_DS_MAX_STA_ID; staLoop++) |
| { |
| memPool->numChunkSTA[staLoop].STAIndex = 0xFF; |
| memPool->numChunkSTA[staLoop].numChunkReservedBySTA = 0; |
| memPool->numChunkSTA[staLoop].validIdx = 0; |
| } |
| |
| return WDI_STATUS_SUCCESS; |
| } |
| |
| /* |
| * Destroy the memory pool |
| */ |
| void WDI_DS_MemPoolDestroy(WDI_DS_BdMemPoolType *memPool) |
| { |
| //Allocate all the max size. |
| wpalDmaMemoryFree(memPool->pVirtBaseAddress); |
| wpalMemoryFree(memPool->AllocationBitmap); |
| wpalMemoryZero(memPool, sizeof(*memPool)); |
| } |
| /* |
| * Allocate chunk memory |
| */ |
| WPT_STATIC WPT_INLINE int find_leading_zero_and_setbit(wpt_uint32 *bitmap, wpt_uint32 maxNumPool) |
| { |
| wpt_uint32 i,j, word; |
| int ret_val = -1; |
| |
| for(i=0; i < (maxNumPool/32 + 1); i++){ |
| j = 0; |
| word = bitmap[i]; |
| for(j=0; j< 32; j++){ |
| if((word & 1) == 0) { |
| bitmap[i] |= (1 << j); |
| return((i<<5) + j); |
| } |
| word >>= 1; |
| } |
| } |
| return ret_val; |
| } |
| |
| void *WDI_DS_MemPoolAlloc(WDI_DS_BdMemPoolType *memPool, void **pPhysAddress, |
| WDI_ResPoolType wdiResPool) |
| { |
| wpt_uint32 index; |
| void *pVirtAddress; |
| wpt_uint32 maxNumPool; |
| switch(wdiResPool) |
| { |
| case WDI_MGMT_POOL_ID: |
| maxNumPool = WDI_DS_HI_PRI_RES_NUM; |
| break; |
| case WDI_DATA_POOL_ID: |
| maxNumPool = WDI_DS_LO_PRI_RES_NUM; |
| break; |
| default: |
| return NULL; |
| } |
| |
| if(maxNumPool == memPool->numChunks) |
| { |
| return NULL; |
| } |
| //Find the leading 0 in the allocation bitmap |
| |
| if((index = find_leading_zero_and_setbit(memPool->AllocationBitmap, maxNumPool)) == -EPERM) |
| { |
| //DbgBreakPoint(); |
| DTI_TRACE( DTI_TRACE_LEVEL_INFO, "WDI_DS_MemPoolAlloc: index:%d(NULL), numChunks:%d", |
| index, memPool->numChunks ); |
| return NULL; |
| } |
| memPool->numChunks++; |
| // The first 8 bytes are reserved for internal use for control bits and hash. |
| pVirtAddress = (wpt_uint8 *)memPool->pVirtBaseAddress + (memPool->chunkSize * index) + 8; |
| *pPhysAddress = (wpt_uint8 *)memPool->pPhysBaseAddress + (memPool->chunkSize * index) + 8; |
| |
| DTI_TRACE( DTI_TRACE_LEVEL_INFO, "WDI_DS_MemPoolAlloc: index:%d, numChunks:%d", index, memPool->numChunks ); |
| |
| return pVirtAddress; |
| |
| } |
| |
| /* |
| * Free chunk memory |
| */ |
| void WDI_DS_MemPoolFree(WDI_DS_BdMemPoolType *memPool, void *pVirtAddress, void *pPhysAddress) |
| { |
| wpt_uint32 index = |
| ((wpt_uint8 *)pVirtAddress - (wpt_uint8 *)memPool->pVirtBaseAddress - 8)/memPool->chunkSize; |
| wpt_uint32 word = memPool->AllocationBitmap[index/32]; |
| word &= ~(1<<(index%32)); |
| memPool->AllocationBitmap[index/32] = word; |
| memPool->numChunks--; |
| |
| //DbgPrint( "WDI_DS_MemPoolFree: index:%d, numChunks:%d", index, memPool->numChunks ); |
| } |
| |
| |
| /** |
| @brief Returns the available number of resources (BD headers) |
| available for TX |
| |
| @param pMemPool: pointer to the BD memory pool |
| |
| @see |
| @return Result of the function call |
| */ |
| wpt_uint32 WDI_DS_GetAvailableResCount(WDI_DS_BdMemPoolType *pMemPool) |
| { |
| return pMemPool->numChunks; |
| } |
| |
| /** |
| @brief WDI_DS_MemPoolAddSTA |
| Add NEW STA into mempool |
| |
| @param pMemPool: pointer to the BD memory pool |
| @param staId STA ID |
| |
| @see |
| @return Result of the function call |
| */ |
| WDI_Status WDI_DS_MemPoolAddSTA(WDI_DS_BdMemPoolType *memPool, wpt_uint8 staIndex) |
| { |
| if(memPool->numChunkSTA[staIndex].STAIndex != 0xFF) |
| { |
| /* Already using this slot? Do nothing */ |
| return WDI_STATUS_SUCCESS; |
| } |
| |
| memPool->numChunkSTA[staIndex].STAIndex = staIndex; |
| memPool->numChunkSTA[staIndex].numChunkReservedBySTA = 0; |
| memPool->numChunkSTA[staIndex].validIdx = 1; |
| return WDI_STATUS_SUCCESS; |
| } |
| |
| /** |
| @brief WDI_DS_MemPoolAddSTA |
| Remove STA from mempool |
| |
| @param pMemPool: pointer to the BD memory pool |
| @param staId STA ID |
| |
| @see |
| @return Result of the function call |
| */ |
| WDI_Status WDI_DS_MemPoolDelSTA(WDI_DS_BdMemPoolType *memPool, wpt_uint8 staIndex) |
| { |
| if(memPool->numChunkSTA[staIndex].STAIndex == 0xFF) |
| { |
| /* Empty this slot? error, bad argument */ |
| return WDI_STATUS_E_FAILURE; |
| } |
| |
| memPool->numChunkSTA[staIndex].STAIndex = 0xFF; |
| memPool->numChunkSTA[staIndex].numChunkReservedBySTA = 0; |
| memPool->numChunkSTA[staIndex].validIdx = 0; |
| return WDI_STATUS_SUCCESS; |
| } |
| |
| /** |
| @brief Returns the reserved number of resources (BD headers) per STA |
| available for TX |
| |
| @param pMemPool: pointer to the BD memory pool |
| @param staId STA ID |
| @see |
| @return Result of the function call |
| */ |
| wpt_uint32 WDI_DS_MemPoolGetRsvdResCountPerSTA(WDI_DS_BdMemPoolType *pMemPool, wpt_uint8 staId) |
| { |
| return pMemPool->numChunkSTA[staId].numChunkReservedBySTA; |
| } |
| |
| /** |
| @brief Increase reserved TX resource count by specific STA |
| |
| @param pMemPool: pointer to the BD memory pool |
| @param staId STA ID |
| @see |
| @return Result of the function call |
| */ |
| void WDI_DS_MemPoolIncreaseReserveCount(WDI_DS_BdMemPoolType *memPool, wpt_uint8 staId) |
| { |
| |
| if((memPool->numChunkSTA[staId].validIdx) && (staId < WDI_DS_MAX_STA_ID)) |
| { |
| memPool->numChunkSTA[staId].numChunkReservedBySTA++; |
| } |
| return; |
| } |
| |
| /** |
| @brief Decrease reserved TX resource count by specific STA |
| |
| @param pMemPool: pointer to the BD memory pool |
| @param staId STA ID |
| @see |
| @return Result of the function call |
| */ |
| void WDI_DS_MemPoolDecreaseReserveCount(WDI_DS_BdMemPoolType *memPool, wpt_uint8 staId) |
| { |
| if(0 == memPool->numChunkSTA[staId].numChunkReservedBySTA) |
| { |
| DTI_TRACE( DTI_TRACE_LEVEL_ERROR, |
| "SAT %d reserved resource count cannot be smaller than 0", staId ); |
| return; |
| } |
| |
| if((memPool->numChunkSTA[staId].validIdx) && (staId < WDI_DS_MAX_STA_ID)) |
| { |
| memPool->numChunkSTA[staId].numChunkReservedBySTA--; |
| } |
| return; |
| } |