CRpi/html/cacheCoherentMemoryProvider_8h_source.html

 #ifndef CACHE_COHERENT_MEMORY_PROVIDER_H
 #define CACHE_COHERENT_MEMORY_PROVIDER_H

 #include <stdint.h>
 #include <stddef.h>//for size_t


 typedef struct ccmb_desc_struct
 {
     uint32_t    mem_alloc_handle;   //return value of mem_alloc(...) from mailbox.c
     uintptr_t   bus_address;    //from mem_lock(...)
     void*       virt_address;   //from mmap
     size_t  size;
 }Ccmb_desc;

 int ccmp_malloc(size_t reqSize, Ccmb_desc* allocatedAreaDesc, unsigned int byteAlignment);

 int ccmp_free(Ccmb_desc* allocatedAreaDesc);

 uintptr_t ccmp_virtAddrToBusAddr(Ccmb_desc* desc, void* virtAddr);


 #endif
ccmp_free
int ccmp_free(Ccmb_desc *allocatedAreaDesc)
Frees a block allocated with ccmp_malloc()
Definition: cacheCoherentMemoryProvider.cpp:53

ccmb_desc_struct::mem_alloc_handle
uint32_t mem_alloc_handle
A hande to the allocated block.
Definition: cacheCoherentMemoryProvider.h:26

ccmb_desc_struct
Describes a Cache Coherent Memory Block allocated by ccmp_malloc()
Definition: cacheCoherentMemoryProvider.h:23

ccmb_desc_struct::size
size_t size
The size of the block in bytes.
Definition: cacheCoherentMemoryProvider.h:32

ccmb_desc_struct::virt_address
void * virt_address
The virtual address of the block.
Definition: cacheCoherentMemoryProvider.h:30

ccmb_desc_struct::bus_address
uintptr_t bus_address
The bus address of the block.
Definition: cacheCoherentMemoryProvider.h:28

Ccmb_desc
struct ccmb_desc_struct Ccmb_desc
Describes a Cache Coherent Memory Block allocated by ccmp_malloc()

ccmp_virtAddrToBusAddr
uintptr_t ccmp_virtAddrToBusAddr(Ccmb_desc *desc, void *virtAddr)
Converts a virtual address inside the block described by desc to it&#39;s bus address.
Definition: cacheCoherentMemoryProvider.cpp:72

ccmp_malloc
int ccmp_malloc(size_t reqSize, Ccmb_desc *allocatedAreaDesc, unsigned int byteAlignment)
Provides a way to easily allocate memory areas that are coherent between CPU and DMA.
Definition: cacheCoherentMemoryProvider.cpp:31