| /* |
| * Copyright (c) 2012-2013 Qualcomm Atheros, Inc. |
| * All Rights Reserved. |
| * Qualcomm Atheros Confidential and Proprietary. |
| */ |
| /*=========================================================================== |
| @file vos_memory.c |
| |
| @brief Virtual Operating System Services Memory API |
| |
| |
| Copyright (c) 2008 QUALCOMM Incorporated. |
| All Rights Reserved. |
| Qualcomm Confidential and Proprietary |
| ===========================================================================*/ |
| |
| /*=========================================================================== |
| |
| EDIT HISTORY FOR FILE |
| |
| |
| This section contains comments describing changes made to the module. |
| Notice that changes are listed in reverse chronological order. |
| |
| |
| $Header:$ $DateTime: $ $Author: $ |
| |
| |
| when who what, where, why |
| -------- --- -------------------------------------------------------- |
| |
| ===========================================================================*/ |
| |
| /*--------------------------------------------------------------------------- |
| * Include Files |
| * ------------------------------------------------------------------------*/ |
| #include "vos_memory.h" |
| #include "vos_trace.h" |
| |
| #ifdef CONFIG_WCNSS_MEM_PRE_ALLOC |
| #include <linux/wcnss_wlan.h> |
| #define WCNSS_PRE_ALLOC_GET_THRESHOLD (4*1024) |
| #endif |
| |
| #ifdef MEMORY_DEBUG |
| #include "wlan_hdd_dp_utils.h" |
| |
| hdd_list_t vosMemList; |
| |
| static v_U8_t WLAN_MEM_HEADER[] = {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68 }; |
| static v_U8_t WLAN_MEM_TAIL[] = {0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87}; |
| static int memory_dbug_flag; |
| |
| struct s_vos_mem_struct |
| { |
| hdd_list_node_t pNode; |
| char* fileName; |
| unsigned int lineNum; |
| unsigned int size; |
| v_U8_t header[8]; |
| }; |
| #endif |
| |
| /*--------------------------------------------------------------------------- |
| * Preprocessor Definitions and Constants |
| * ------------------------------------------------------------------------*/ |
| |
| /*--------------------------------------------------------------------------- |
| * Type Declarations |
| * ------------------------------------------------------------------------*/ |
| |
| /*--------------------------------------------------------------------------- |
| * Data definitions |
| * ------------------------------------------------------------------------*/ |
| |
| /*--------------------------------------------------------------------------- |
| * External Function implementation |
| * ------------------------------------------------------------------------*/ |
| #ifdef MEMORY_DEBUG |
| void vos_mem_init() |
| { |
| /* Initalizing the list with maximum size of 60000 */ |
| hdd_list_init(&vosMemList, 60000); |
| memory_dbug_flag = 1; |
| return; |
| } |
| |
| void vos_mem_clean() |
| { |
| v_SIZE_t listSize; |
| hdd_list_size(&vosMemList, &listSize); |
| |
| if(listSize) |
| { |
| hdd_list_node_t* pNode; |
| VOS_STATUS vosStatus; |
| |
| struct s_vos_mem_struct* memStruct; |
| char* prev_mleak_file = ""; |
| unsigned int prev_mleak_lineNum = 0; |
| unsigned int prev_mleak_sz = 0; |
| unsigned int mleak_cnt = 0; |
| |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, |
| "%s: List is not Empty. listSize %d ", __func__, (int)listSize); |
| |
| do |
| { |
| spin_lock(&vosMemList.lock); |
| vosStatus = hdd_list_remove_front(&vosMemList, &pNode); |
| spin_unlock(&vosMemList.lock); |
| if(VOS_STATUS_SUCCESS == vosStatus) |
| { |
| memStruct = (struct s_vos_mem_struct*)pNode; |
| |
| /* Take care to log only once multiple memory leaks from |
| * the same place */ |
| if(strcmp(prev_mleak_file, memStruct->fileName) || |
| (prev_mleak_lineNum != memStruct->lineNum) || |
| (prev_mleak_sz != memStruct->size)) |
| { |
| if(mleak_cnt != 0) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_FATAL, |
| "%d Time Memory Leak@ File %s, @Line %d, size %d", |
| mleak_cnt, prev_mleak_file, prev_mleak_lineNum, |
| prev_mleak_sz); |
| } |
| prev_mleak_file = memStruct->fileName; |
| prev_mleak_lineNum = memStruct->lineNum; |
| prev_mleak_sz = memStruct->size; |
| mleak_cnt = 0; |
| } |
| mleak_cnt++; |
| |
| kfree((v_VOID_t*)memStruct); |
| } |
| }while(vosStatus == VOS_STATUS_SUCCESS); |
| |
| /* Print last memory leak from the module */ |
| if(mleak_cnt) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_FATAL, |
| "%d Time memory Leak@ File %s, @Line %d, size %d", |
| mleak_cnt, prev_mleak_file, prev_mleak_lineNum, |
| prev_mleak_sz); |
| } |
| |
| |
| #ifdef CONFIG_HALT_KMEMLEAK |
| BUG_ON(0); |
| #endif |
| } |
| } |
| |
| void vos_mem_exit() |
| { |
| if (memory_dbug_flag) |
| { |
| vos_mem_clean(); |
| hdd_list_destroy(&vosMemList); |
| } |
| } |
| |
| v_VOID_t * vos_mem_malloc_debug( v_SIZE_t size, char* fileName, v_U32_t lineNum) |
| { |
| struct s_vos_mem_struct* memStruct; |
| v_VOID_t* memPtr = NULL; |
| v_SIZE_t new_size; |
| |
| if (size > (1024*1024)) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, |
| "%s: called with arg > 1024K; passed in %d !!!", __func__,size); |
| return NULL; |
| } |
| |
| if (in_interrupt()) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s cannot be " |
| "called from interrupt context!!!", __func__); |
| return NULL; |
| } |
| |
| if (!memory_dbug_flag) |
| { |
| #ifdef CONFIG_WCNSS_MEM_PRE_ALLOC |
| v_VOID_t* pmem; |
| if (size > WCNSS_PRE_ALLOC_GET_THRESHOLD) |
| { |
| pmem = wcnss_prealloc_get(size); |
| if (NULL != pmem) |
| return pmem; |
| } |
| #endif |
| return kmalloc(size, GFP_KERNEL); |
| } |
| |
| new_size = size + sizeof(struct s_vos_mem_struct) + 8; |
| |
| memStruct = (struct s_vos_mem_struct*)kmalloc(new_size,GFP_KERNEL); |
| |
| if(memStruct != NULL) |
| { |
| VOS_STATUS vosStatus; |
| |
| memStruct->fileName = fileName; |
| memStruct->lineNum = lineNum; |
| memStruct->size = size; |
| |
| vos_mem_copy(&memStruct->header[0], &WLAN_MEM_HEADER[0], sizeof(WLAN_MEM_HEADER)); |
| vos_mem_copy( (v_U8_t*)(memStruct + 1) + size, &WLAN_MEM_TAIL[0], sizeof(WLAN_MEM_TAIL)); |
| |
| spin_lock(&vosMemList.lock); |
| vosStatus = hdd_list_insert_front(&vosMemList, &memStruct->pNode); |
| spin_unlock(&vosMemList.lock); |
| if(VOS_STATUS_SUCCESS != vosStatus) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, |
| "%s: Unable to insert node into List vosStatus %d", __func__, vosStatus); |
| } |
| |
| memPtr = (v_VOID_t*)(memStruct + 1); |
| } |
| return memPtr; |
| } |
| |
| v_VOID_t vos_mem_free( v_VOID_t *ptr ) |
| { |
| |
| if (ptr == NULL) |
| return; |
| |
| if (in_interrupt()) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s cannot be " |
| "called from interrupt context!!!", __func__); |
| return; |
| } |
| |
| if (!memory_dbug_flag) |
| { |
| #ifdef CONFIG_WCNSS_MEM_PRE_ALLOC |
| if (wcnss_prealloc_put(ptr)) |
| return; |
| #endif |
| kfree(ptr); |
| } |
| else |
| { |
| VOS_STATUS vosStatus; |
| struct s_vos_mem_struct* memStruct = ((struct s_vos_mem_struct*)ptr) - 1; |
| |
| spin_lock(&vosMemList.lock); |
| vosStatus = hdd_list_remove_node(&vosMemList, &memStruct->pNode); |
| spin_unlock(&vosMemList.lock); |
| |
| if(VOS_STATUS_SUCCESS == vosStatus) |
| { |
| if(0 == vos_mem_compare(memStruct->header, &WLAN_MEM_HEADER[0], sizeof(WLAN_MEM_HEADER)) ) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_FATAL, |
| "Memory Header is corrupted. MemInfo: Filename %s, LineNum %d", |
| memStruct->fileName, (int)memStruct->lineNum); |
| } |
| if(0 == vos_mem_compare( (v_U8_t*)ptr + memStruct->size, &WLAN_MEM_TAIL[0], sizeof(WLAN_MEM_TAIL ) ) ) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_FATAL, |
| "Memory Trailer is corrupted. MemInfo: Filename %s, LineNum %d", |
| memStruct->fileName, (int)memStruct->lineNum); |
| } |
| kfree((v_VOID_t*)memStruct); |
| } |
| else |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_FATAL, |
| "%s: Unallocated memory (double free?)", __func__); |
| VOS_ASSERT(0); |
| } |
| } |
| } |
| #else |
| v_VOID_t * vos_mem_malloc( v_SIZE_t size ) |
| { |
| #ifdef CONFIG_WCNSS_MEM_PRE_ALLOC |
| v_VOID_t* pmem; |
| #endif |
| if (size > (1024*1024)) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s: called with arg > 1024K; passed in %d !!!", __func__,size); |
| return NULL; |
| } |
| if (in_interrupt()) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s cannot be called from interrupt context!!!", __func__); |
| return NULL; |
| } |
| #ifdef CONFIG_WCNSS_MEM_PRE_ALLOC |
| if(size > WCNSS_PRE_ALLOC_GET_THRESHOLD) |
| { |
| pmem = wcnss_prealloc_get(size); |
| if(NULL != pmem) |
| return pmem; |
| } |
| #endif |
| return kmalloc(size, GFP_KERNEL); |
| } |
| |
| v_VOID_t vos_mem_free( v_VOID_t *ptr ) |
| { |
| if (ptr == NULL) |
| return; |
| |
| if (in_interrupt()) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s cannot be called from interrupt context!!!", __func__); |
| return; |
| } |
| #ifdef CONFIG_WCNSS_MEM_PRE_ALLOC |
| if(wcnss_prealloc_put(ptr)) |
| return; |
| #endif |
| |
| kfree(ptr); |
| } |
| #endif |
| |
| v_VOID_t vos_mem_set( v_VOID_t *ptr, v_SIZE_t numBytes, v_BYTE_t value ) |
| { |
| if (ptr == NULL) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s called with NULL parameter ptr", __func__); |
| return; |
| } |
| memset(ptr, value, numBytes); |
| } |
| |
| v_VOID_t vos_mem_zero( v_VOID_t *ptr, v_SIZE_t numBytes ) |
| { |
| if (0 == numBytes) |
| { |
| // special case where ptr can be NULL |
| return; |
| } |
| |
| if (ptr == NULL) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s called with NULL parameter ptr", __func__); |
| return; |
| } |
| memset(ptr, 0, numBytes); |
| |
| } |
| |
| |
| //This function is to validate one list in SME. We suspect someone corrupt te list. This code need to be removed |
| //once the issue is fixed. |
| extern int csrCheckValidateLists(void * dest, const void *src, v_SIZE_t num, int idx); |
| |
| v_VOID_t vos_mem_copy( v_VOID_t *pDst, const v_VOID_t *pSrc, v_SIZE_t numBytes ) |
| { |
| if (0 == numBytes) |
| { |
| // special case where pDst or pSrc can be NULL |
| return; |
| } |
| |
| if ((pDst == NULL) || (pSrc==NULL)) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, |
| "%s called with NULL parameter, source:%p destination:%p", |
| __func__, pSrc, pDst); |
| VOS_ASSERT(0); |
| return; |
| } |
| //These two check function calls are to see if someone corrupt the list while doing mem copy. |
| csrCheckValidateLists(pDst, pSrc, numBytes, 1); |
| memcpy(pDst, pSrc, numBytes); |
| csrCheckValidateLists(pDst, pSrc, numBytes, 2); |
| } |
| |
| v_VOID_t vos_mem_move( v_VOID_t *pDst, const v_VOID_t *pSrc, v_SIZE_t numBytes ) |
| { |
| if (0 == numBytes) |
| { |
| // special case where pDst or pSrc can be NULL |
| return; |
| } |
| |
| if ((pDst == NULL) || (pSrc==NULL)) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, |
| "%s called with NULL parameter, source:%p destination:%p", |
| __func__, pSrc, pDst); |
| VOS_ASSERT(0); |
| return; |
| } |
| memmove(pDst, pSrc, numBytes); |
| } |
| |
| v_BOOL_t vos_mem_compare( v_VOID_t *pMemory1, v_VOID_t *pMemory2, v_U32_t numBytes ) |
| { |
| if (0 == numBytes) |
| { |
| // special case where pMemory1 or pMemory2 can be NULL |
| return VOS_TRUE; |
| } |
| |
| if ((pMemory1 == NULL) || (pMemory2==NULL)) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, |
| "%s called with NULL parameter, p1:%p p2:%p", |
| __func__, pMemory1, pMemory2); |
| VOS_ASSERT(0); |
| return VOS_FALSE; |
| } |
| return (memcmp(pMemory1, pMemory2, numBytes)?VOS_FALSE:VOS_TRUE); |
| } |
| |
| |
| v_SINT_t vos_mem_compare2( v_VOID_t *pMemory1, v_VOID_t *pMemory2, v_U32_t numBytes ) |
| |
| { |
| return( (v_SINT_t) memcmp( pMemory1, pMemory2, numBytes ) ); |
| } |
| |
| /*---------------------------------------------------------------------------- |
| |
| \brief vos_mem_dma_malloc() - vOSS DMA Memory Allocation |
| |
| This function will dynamicallly allocate the specified number of bytes of |
| memory. This memory will have special attributes making it DMA friendly i.e. |
| it will exist in contiguous, 32-byte aligned uncached memory. A normal |
| vos_mem_malloc does not yield memory with these attributes. |
| |
| NOTE: the special DMA friendly memory is very scarce and this API must be |
| used sparingly |
| |
| On WM, there is nothing special about this memory. SDHC allocates the |
| DMA friendly buffer and copies the data into it |
| |
| \param size - the number of bytes of memory to allocate. |
| |
| \return Upon successful allocate, returns a non-NULL pointer to the |
| allocated memory. If this function is unable to allocate the amount of |
| memory specified (for any reason) it returns NULL. |
| |
| \sa |
| |
| --------------------------------------------------------------------------*/ |
| #ifdef MEMORY_DEBUG |
| v_VOID_t * vos_mem_dma_malloc_debug( v_SIZE_t size, char* fileName, v_U32_t lineNum) |
| { |
| struct s_vos_mem_struct* memStruct; |
| v_VOID_t* memPtr = NULL; |
| v_SIZE_t new_size; |
| |
| if (in_interrupt()) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s cannot be called from interrupt context!!!", __func__); |
| return NULL; |
| } |
| |
| if (!memory_dbug_flag) |
| return kmalloc(size, GFP_KERNEL); |
| |
| new_size = size + sizeof(struct s_vos_mem_struct) + 8; |
| |
| memStruct = (struct s_vos_mem_struct*)kmalloc(new_size,GFP_KERNEL); |
| |
| if(memStruct != NULL) |
| { |
| VOS_STATUS vosStatus; |
| |
| memStruct->fileName = fileName; |
| memStruct->lineNum = lineNum; |
| memStruct->size = size; |
| |
| vos_mem_copy(&memStruct->header[0], &WLAN_MEM_HEADER[0], sizeof(WLAN_MEM_HEADER)); |
| vos_mem_copy( (v_U8_t*)(memStruct + 1) + size, &WLAN_MEM_TAIL[0], sizeof(WLAN_MEM_TAIL)); |
| |
| spin_lock(&vosMemList.lock); |
| vosStatus = hdd_list_insert_front(&vosMemList, &memStruct->pNode); |
| spin_unlock(&vosMemList.lock); |
| if(VOS_STATUS_SUCCESS != vosStatus) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, |
| "%s: Unable to insert node into List vosStatus %d", __func__, vosStatus); |
| } |
| |
| memPtr = (v_VOID_t*)(memStruct + 1); |
| } |
| |
| return memPtr; |
| } |
| |
| v_VOID_t vos_mem_dma_free( v_VOID_t *ptr ) |
| { |
| if (ptr == NULL) |
| return; |
| |
| if (memory_dbug_flag) |
| { |
| VOS_STATUS vosStatus; |
| struct s_vos_mem_struct* memStruct = ((struct s_vos_mem_struct*)ptr) - 1; |
| |
| spin_lock(&vosMemList.lock); |
| vosStatus = hdd_list_remove_node(&vosMemList, &memStruct->pNode); |
| spin_unlock(&vosMemList.lock); |
| |
| if(VOS_STATUS_SUCCESS == vosStatus) |
| { |
| if(0 == vos_mem_compare(memStruct->header, &WLAN_MEM_HEADER[0], sizeof(WLAN_MEM_HEADER)) ) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_FATAL, |
| "Memory Header is corrupted. MemInfo: Filename %s, LineNum %d", |
| memStruct->fileName, (int)memStruct->lineNum); |
| } |
| if(0 == vos_mem_compare( (v_U8_t*)ptr + memStruct->size, &WLAN_MEM_TAIL[0], sizeof(WLAN_MEM_TAIL ) ) ) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_FATAL, |
| "Memory Trailer is corrupted. MemInfo: Filename %s, LineNum %d", |
| memStruct->fileName, (int)memStruct->lineNum); |
| } |
| kfree((v_VOID_t*)memStruct); |
| } |
| } |
| else |
| kfree(ptr); |
| } |
| #else |
| v_VOID_t* vos_mem_dma_malloc( v_SIZE_t size ) |
| { |
| if (in_interrupt()) |
| { |
| VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s cannot be called from interrupt context!!!", __func__); |
| return NULL; |
| } |
| return kmalloc(size, GFP_KERNEL); |
| } |
| |
| /*---------------------------------------------------------------------------- |
| |
| \brief vos_mem_dma_free() - vOSS DMA Free Memory |
| |
| This function will free special DMA friendly memory pointed to by 'ptr'. |
| |
| On WM, there is nothing special about the memory being free'd. SDHC will |
| take care of free'ing the DMA friendly buffer |
| |
| \param ptr - pointer to the starting address of the memory to be |
| free'd. |
| |
| \return Nothing |
| |
| \sa |
| |
| --------------------------------------------------------------------------*/ |
| v_VOID_t vos_mem_dma_free( v_VOID_t *ptr ) |
| { |
| if (ptr == NULL) |
| return; |
| kfree(ptr); |
| } |
| #endif |