Subversion Repositories pcie_ds_dma

#ifndef _MEMORY_H_

#define _MEMORY_H_

//-----------------------------------------------------------------------------

struct address_t {

    size_t physical_address;

    void  *virtual_address;

    size_t size;

};

//-----------------------------------------------------------------------------

struct mem_t {

    struct list_head list;

    dma_addr_t dma_handle;

    void  *cpu_addr;

    size_t size;

};

//-----------------------------------------------------------------------------

struct dma_channel {

    int                     m_Number;

    int                     m_Use;

    struct pci_dev         *m_pci;

    spinlock_t              m_MemListLock;

    atomic_t                m_MemListCount;

    struct list_head        m_MemList;

    struct mem_t            m_MemStub;

};

//-----------------------------------------------------------------------------

struct pex_device;

struct memory_block;

//-----------------------------------------------------------------------------

int lock_pages( void *va, u32 size );

int unlock_pages( void *va, u32 size );

void* allocate_memory_block(struct pex_device *brd, size_t block_size, dma_addr_t *dma_addr);

int free_memory_block(struct pex_device *brd, struct memory_block mb);

//--------------------------------------------------------------------

#endif //_MEMORY_H_