sdk-hwV1.3/external/fast-user-adapter/rt_media/api_adapter/aw_ion_alloc.c

/*
* Copyright (c) 2008-2016 Allwinner Technology Co. Ltd.
* All rights reserved.
*
* File : ionAlloc.c
* Description :
* History :
*   Author  : xyliu <xyliu@allwinnertech.com>
*   Date    : 2016/04/13
*   Comment :
*
*
*/


/*
 * ion_alloc.c
 *
 * john.fu@allwinnertech.com
 *
 * ion memory allocate
 *
 */

//#define CONFIG_LOG_LEVEL    OPTION_LOG_LEVEL_DETAIL
#define LOG_TAG "ion_alloc"

#include "aw_ion_alloc_list.h"
#include "aw_ion_alloc.h"
#include "aw_ion_util.h"

#include <sys/ioctl.h>
#include <errno.h>

#define DEBUG_ION_REF 0   //just for H3 ION memery info debug
#define ION_ALLOC_ALIGN    SZ_4k
#define DEV_NAME                     "/dev/ion"
#define ION_IOC_SUNXI_POOL_INFO        10

#define UNUSA_PARAM(param) (void)param

enum VE_IOCTL_CMD {
    IOCTL_UNKOWN = 0x100,
    IOCTL_GET_ENV_INFO,
    IOCTL_WAIT_VE_DE,
    IOCTL_WAIT_VE_EN,
    IOCTL_RESET_VE,
    IOCTL_ENABLE_VE,
    IOCTL_DISABLE_VE,
    IOCTL_SET_VE_FREQ,

    IOCTL_CONFIG_AVS2 = 0x200,
    IOCTL_GETVALUE_AVS2 ,
    IOCTL_PAUSE_AVS2 ,
    IOCTL_START_AVS2 ,
    IOCTL_RESET_AVS2 ,
    IOCTL_ADJUST_AVS2,
    IOCTL_ENGINE_REQ,
    IOCTL_ENGINE_REL,
    IOCTL_ENGINE_CHECK_DELAY,
    IOCTL_GET_IC_VER,
    IOCTL_ADJUST_AVS2_ABS,
    IOCTL_FLUSH_CACHE,
    IOCTL_SET_REFCOUNT,
    IOCTL_FLUSH_CACHE_ALL,
    IOCTL_TEST_VERSION,

    IOCTL_GET_LOCK = 0x310,
    IOCTL_RELEASE_LOCK,

    IOCTL_SET_VOL = 0x400,

    IOCTL_WAIT_JPEG_DEC = 0x500,
    /*for get the ve ref_count for ipc to delete the semphore*/
    IOCTL_GET_REFCOUNT,

    /*for iommu*/
    IOCTL_GET_IOMMU_ADDR,
    IOCTL_FREE_IOMMU_ADDR,

	/*for fush cache range since kernel 5.4*/
	IOCTL_FLUSH_CACHE_RANGE = 0x506,

    /*debug just for encoder*/
    IOCTL_SET_PROC_INFO,
    IOCTL_STOP_PROC_INFO,
    IOCTL_COPY_PROC_INFO,

    IOCTL_SET_DRAM_HIGH_CHANNAL = 0x600,
    IOCTL_READ_DDR_VALUE,
    IOCTL_WRITE_DDR_VALUE,
    IOCTL_CLEAR_DDR_VALUE,

    /* debug for decoder and encoder*/
    IOCTL_PROC_INFO_COPY = 0x610,
    IOCTL_PROC_INFO_STOP,


    IOCTL_POWER_SETUP = 0x700,
    IOCTL_POWER_SHUTDOWN,
};

struct user_iommu_param {
    int            fd;
    unsigned int   iommu_addr;
};


//----------------------
#if DEBUG_ION_REF==1
    int   cdx_use_mem = 0;
    typedef struct ION_BUF_NODE_TEST
    {
        unsigned long addr;
        int size;
    } ion_buf_node_test;

    #define ION_BUF_LEN  50
    ion_buf_node_test ion_buf_nodes_test[ION_BUF_LEN];
#endif
//----------------------

    struct sunxi_pool_info {
        unsigned int total;     //unit kb
        unsigned int free_kb;  // size kb
        unsigned int free_mb;  // size mb
    };


typedef struct BUFFER_NODE
{
    struct aw_mem_list_head i_list;
    unsigned long phy;        //phisical address
    unsigned long vir;        //virtual address
    unsigned int size;        //buffer size
    unsigned int tee;      //
    unsigned long user_virt;//
    ion_fd_data_t fd_data;
    struct user_iommu_param iommu_buffer;
}buffer_node;

typedef struct ION_ALLOC_CONTEXT
{
    int                    fd;            // driver handle
    struct aw_mem_list_head    list;        // buffer list
    int                    ref_cnt;    // reference count
    unsigned int           phyOffset;
	int 				   ve_fd;
}ion_alloc_context;

static ion_alloc_context    *g_alloc_context = NULL;
static pthread_mutex_t      g_mutex_alloc = PTHREAD_MUTEX_INITIALIZER;

int get_memory_type()
{
    MEMORY_TYPE eMemoryType = MEMORY_NORMAL;

#if CONF_USE_IOMMU
    eMemoryType = MEMORY_IOMMU;
#else

    #ifdef __ANDROID__
    char prop_value[512];
    property_get("ro.kernel.iomem.type", prop_value, "0xaf01");
    logv("++++ prop_value: %s", prop_value);
    if(strcmp(prop_value, "0xaf10")==0)
    {
        eMemoryType = MEMORY_IOMMU;
    }
    #endif
#endif

	eMemoryType = MEMORY_IOMMU;

	logv("get_memory_type: %d\n", eMemoryType);

    return eMemoryType;
}


static int getPhyAddr(int nIonFd, uintptr_t handle, void *pIommuBuf,
                          unsigned long *pAddr)
{
    if(get_memory_type()==MEMORY_IOMMU)
    {
        struct user_iommu_param *pIommuBuffer = (struct user_iommu_param *)pIommuBuf;

		int ret = ioctl(g_alloc_context->ve_fd, IOCTL_GET_IOMMU_ADDR, pIommuBuffer);

        if(pIommuBuffer->iommu_addr & 0xff)
        {
            loge("get iommu addr maybe wrong:%x\n", pIommuBuffer->iommu_addr);
            return -1;
        }
        logv("getPhyAddr: fd:%d, iommu_addr:%x\n", pIommuBuffer->fd,
            pIommuBuffer->iommu_addr);

        *pAddr = (unsigned long)pIommuBuffer->iommu_addr;
    }
    else
    {
        struct aw_ion_custom_info custom_data;
        cdc_sunxi_phys_data   phys_data;
        memset(&phys_data, 0, sizeof(cdc_sunxi_phys_data));
        custom_data.aw_cmd = ION_IOC_SUNXI_PHYS_ADDR;
        phys_data.handle = (aw_ion_user_handle_t)handle;
        custom_data.aw_arg = (unsigned long)&phys_data;
        int ret = ioctl(nIonFd, AW_MEM_ION_IOC_CUSTOM, &custom_data);
        if(ret) {
            loge("ION_IOC_CUSTOM err, ret %d\n", ret);
            return -1;
        }
        logv("CdcIonGetPhyAdrVe:%x, fd:%d, handle:%d\n",phys_data.phys_addr, nIonFd, handle);

        *pAddr = (unsigned long)phys_data.phys_addr;
    }
    return 0;
}

#if DEBUG_ION_REF == 1
static int ion_alloc_get_total_size();
#endif

/*funciton begin*/
int aw_rt_ion_alloc_open()
{
    logv("begin aw_rt_ion_alloc_open \n");

    pthread_mutex_lock(&g_mutex_alloc);
    if (g_alloc_context != NULL)
    {
        logv("ion allocator has already been created \n");
        goto SUCCEED_OUT;
    }

    g_alloc_context = (ion_alloc_context*)malloc(sizeof(ion_alloc_context));
    if (g_alloc_context == NULL)
    {
        loge("create ion allocator failed, out of memory \n");
        goto ERROR_OUT;
    }
    else
    {
        logv("pid: %d, g_alloc_context = %p \n", getpid(), g_alloc_context);
    }

    memset((void*)g_alloc_context, 0, sizeof(ion_alloc_context));

    g_alloc_context->phyOffset = 0;
    logv("** phy offset = %x",g_alloc_context->phyOffset);


/* Readonly should be enough. */
    g_alloc_context->fd = open(DEV_NAME, O_RDONLY, 0);

    if (g_alloc_context->fd <= 0)
    {
        loge("open %s failed \n", DEV_NAME);
        goto ERROR_OUT;
    }

    g_alloc_context->ve_fd = open("/dev/cedar_dev", O_RDWR);

    if (g_alloc_context->ve_fd <= 0)
    {
        loge("open cedar_dev failed \n");
        goto ERROR_OUT;
    }
	ioctl(g_alloc_context->ve_fd, IOCTL_ENGINE_REQ, 0);

#if DEBUG_ION_REF==1
    cdx_use_mem = 0;
    memset(&ion_buf_nodes_test, 0, sizeof(ion_buf_nodes_test));
    logd("ion_open, cdx_use_mem=[%dByte].", cdx_use_mem);
    ion_alloc_get_total_size();
#endif

    AW_MEM_INIT_LIST_HEAD(&g_alloc_context->list);

SUCCEED_OUT:
    g_alloc_context->ref_cnt++;
    pthread_mutex_unlock(&g_mutex_alloc);
    return 0;

ERROR_OUT:
    if (g_alloc_context != NULL
        && g_alloc_context->fd > 0)
    {
        close(g_alloc_context->fd);
        g_alloc_context->fd = 0;
    }

    if (g_alloc_context != NULL)
    {
        free(g_alloc_context);
        g_alloc_context = NULL;
    }

    pthread_mutex_unlock(&g_mutex_alloc);
    return -1;
}

void aw_rt_ion_alloc_close()
{
    struct aw_mem_list_head * pos, *q;

    logv("aw_rt_ion_alloc_close \n");

    pthread_mutex_lock(&g_mutex_alloc);
    if (--g_alloc_context->ref_cnt <= 0)
    {
        logv("pid: %d, release g_alloc_context = %p \n", getpid(), g_alloc_context);

        aw_mem_list_for_each_safe(pos, q, &g_alloc_context->list)
        {
            buffer_node * tmp;
            tmp = aw_mem_list_entry(pos, buffer_node, i_list);
            logv("aw_rt_ion_alloc_close del item phy= 0x%lx vir= 0x%lx, size= %d \n", \
                tmp->phy, tmp->vir, tmp->size);
            aw_mem_list_del(pos);
            free(tmp);
        }
#if DEBUG_ION_REF==1
        logd("ion_close, cdx_use_mem=[%d MB]", cdx_use_mem/1024/1024);
        ion_alloc_get_total_size();
#endif
        close(g_alloc_context->fd);
        g_alloc_context->fd = -1;

		ioctl(g_alloc_context->ve_fd, IOCTL_ENGINE_REL, 0);

		close(g_alloc_context->ve_fd);
		g_alloc_context->ve_fd = -1;

        free(g_alloc_context);
        g_alloc_context = NULL;
    }
    else
    {
        logv("ref cnt: %d > 0, do not free \n", g_alloc_context->ref_cnt);
    }
    pthread_mutex_unlock(&g_mutex_alloc);

    //--------------
#if DEBUG_ION_REF==1
    int i = 0;
    int counter = 0;
    for(i=0; i<ION_BUF_LEN; i++)
    {
        if(ion_buf_nodes_test[i].addr != 0 || ion_buf_nodes_test[i].size != 0){

            loge("ion mem leak????  addr->[0x%lx], leak size->[%dByte]", \
                ion_buf_nodes_test[i].addr, ion_buf_nodes_test[i].size);
            counter ++;
        }
    }

    if(counter != 0)
    {
        loge("my god, have [%d]blocks ion mem leak.!!!!", counter);
    }
    else
    {
        logd("well done, no ion mem leak.");
    }
#endif
    //--------------
    return ;
}

// return virtual address: 0 failed
void* aw_rt_ion_alloc_palloc_base(int size, unsigned char bIsCache)
{
    aw_ion_allocation_info_t alloc_data;
    ion_fd_data_t fd_data;
    struct aw_ion_handle_data handle_data;

    int rest_size = 0;
    unsigned long addr_phy = 0;
    unsigned long addr_vir = 0;
    buffer_node * alloc_buffer = NULL;
    int ret = 0;
    memset(&alloc_data, 0, sizeof(aw_ion_allocation_info_t));
    pthread_mutex_lock(&g_mutex_alloc);

    if (g_alloc_context == NULL)
    {
        loge("ion_alloc do not opened, should call aw_rt_ion_alloc_open() \
            before ion_alloc_alloc(size) \n");
        goto ALLOC_OUT;
    }

    if(size <= 0)
    {
        loge("can not alloc size 0 \n");
        goto ALLOC_OUT;
    }

    alloc_data.aw_len = (size_t)size;
    alloc_data.aw_align = ION_ALLOC_ALIGN ;

    if(get_memory_type() == MEMORY_IOMMU)
    {
        alloc_data.aw_heap_id_mask = AW_ION_SYSTEM_HEAP_MASK | AW_ION_CARVEOUT_HEAP_MASK;
    }
    else
    {
        alloc_data.aw_heap_id_mask = AW_ION_DMA_HEAP_MASK | AW_ION_CARVEOUT_HEAP_MASK;
    }

    if(bIsCache != 0)
    {
        alloc_data.flags = AW_ION_CACHED_FLAG | AW_ION_CACHED_NEEDS_SYNC_FLAG;
    }

    #if 0
    #ifdef CONF_KERNEL_VERSION_4_9
         alloc_data.aw_heap_id_mask = AW_ION_DMA_HEAP_MASK | AW_ION_CARVEOUT_HEAP_MASK;
         alloc_data.flags = AW_ION_CACHED_FLAG | AW_ION_CACHED_NEEDS_SYNC_FLAG;
    #else
         alloc_data.flags = AW_ION_CACHED_FLAG | AW_ION_CACHED_NEEDS_SYNC_FLAG;
    #endif
    #endif
    ret = ioctl(g_alloc_context->fd, AW_MEM_ION_IOC_ALLOC, &alloc_data);
    if (ret)
    {
        loge("ION_IOC_ALLOC error , size = %d\n", size);
        goto ALLOC_OUT;
    }

    /* get dmabuf fd */
    fd_data.handle = alloc_data.handle;
    ret = ioctl(g_alloc_context->fd, AW_MEM_ION_IOC_MAP, &fd_data);
    if(ret)
    {
        loge("ION_IOC_MAP err, ret %d, dmabuf fd 0x%08x\n", ret, (unsigned int)fd_data.aw_fd);
        goto ALLOC_OUT;
    }

    /* mmap to user */
    addr_vir = (unsigned long)mmap(NULL, alloc_data.aw_len, \
        PROT_READ|PROT_WRITE, MAP_SHARED, fd_data.aw_fd, 0);
    if((unsigned long)MAP_FAILED == addr_vir)
    {
        loge("mmap err, ret %lx\n", (unsigned long)addr_vir);
        addr_vir = 0;
        goto ALLOC_OUT;
    }

    alloc_buffer = (buffer_node *)malloc(sizeof(buffer_node));
    if (alloc_buffer == NULL)
    {
        loge("malloc buffer node failed");

        /* unmmap */
        ret = munmap((void*)addr_vir, alloc_data.aw_len);
        if(ret) {
            loge("munmap err, ret %d\n", ret);
        }

        /* close dmabuf fd */
        close(fd_data.aw_fd);

        /* free buffer */
        handle_data.handle = alloc_data.handle;
        ret = ioctl(g_alloc_context->fd, AW_MEM_ION_IOC_FREE, &handle_data);

        if(ret) {
            loge("ION_IOC_FREE err, ret %d\n", ret);
        }

        addr_phy = 0;
        addr_vir = 0;        // value of MAP_FAILED is -1, should return 0

        goto ALLOC_OUT;
    }

    struct user_iommu_param iommu_buffer;
    memset(&iommu_buffer, 0, sizeof(struct user_iommu_param));
    iommu_buffer.fd = fd_data.aw_fd;

    ret = getPhyAddr(g_alloc_context->fd, (uintptr_t)alloc_data.handle,
                                 (void *)&iommu_buffer, &addr_phy);
    if(ret < 0)
    {
        loge("get phy addr error\n");
        goto ALLOC_OUT;
    }
    memcpy(&alloc_buffer->iommu_buffer, &iommu_buffer, sizeof(struct user_iommu_param));
    alloc_buffer->phy     = addr_phy;
    alloc_buffer->vir     = addr_vir;
    alloc_buffer->user_virt = addr_vir;
    alloc_buffer->size    = size;
    alloc_buffer->fd_data.handle = fd_data.handle;
    alloc_buffer->fd_data.aw_fd = fd_data.aw_fd;

    logv("alloc succeed, addr_phy: 0x%lx, addr_vir: 0x%lx, size: %d", addr_phy, addr_vir, size);

    aw_mem_list_add_tail(&alloc_buffer->i_list, &g_alloc_context->list);

    //------start-----------------
#if DEBUG_ION_REF==1
    cdx_use_mem += size;
    logd("++++++cdx_use_mem = [%d MB], increase size->[%d B], addr_vir=[0x%lx], addr_phy=[0x%lx]", \
        cdx_use_mem/1024/1024, size, addr_vir, addr_phy);
    int i = 0;
    for(i=0; i<ION_BUF_LEN; i++)
    {
        if(ion_buf_nodes_test[i].addr == 0 && ion_buf_nodes_test[i].size == 0){
            ion_buf_nodes_test[i].addr = addr_vir;
            ion_buf_nodes_test[i].size = size;
            break;
        }
    }

    if(i>= ION_BUF_LEN){
        loge("error, ion buf len is large than [%d]", ION_BUF_LEN);
    }
#endif
//--------------------------------

ALLOC_OUT:
    pthread_mutex_unlock(&g_mutex_alloc);
    return (void*)addr_vir;
}

void* aw_rt_ion_alloc_palloc(int size)
{
    unsigned char bIsCache = 1;
    return aw_rt_ion_alloc_palloc_base(size, bIsCache);
}

void* aw_rt_ion_alloc_no_cache_palloc(int size)
{
    unsigned char bIsCache = 0;
    return aw_rt_ion_alloc_palloc_base(size, bIsCache);
}

void aw_rt_ion_alloc_pfree(void * pbuf)
{
    int flag = 0;
    unsigned long addr_vir = (unsigned long)pbuf;
    buffer_node * tmp;
    int ret;
    struct aw_ion_handle_data handle_data;

    if (0 == pbuf)
    {
        loge("can not free NULL buffer \n");
        return ;
    }

    pthread_mutex_lock(&g_mutex_alloc);

    if (g_alloc_context == NULL)
    {
        loge("ion_alloc do not opened, should call aw_rt_ion_alloc_open() \
            before ion_alloc_alloc(size) \n");
        pthread_mutex_unlock(&g_mutex_alloc);
        return ;
    }

    aw_mem_list_for_each_entry(tmp, &g_alloc_context->list, i_list)
    {
        if (tmp->vir == addr_vir)
        {
            logv("ion_alloc_free item phy= 0x%lx vir= 0x%lx, size= %d \n", \
                tmp->phy, tmp->vir, tmp->size);
            /*unmap user space*/
            if(get_memory_type() == MEMORY_IOMMU)
            {
                logv("aw_rt_ion_alloc_pfree: fd:%d, iommu_addr:%x\n",
					tmp->iommu_buffer.fd, tmp->iommu_buffer.iommu_addr);

				ret = ioctl(g_alloc_context->ve_fd, IOCTL_FREE_IOMMU_ADDR,  &tmp->iommu_buffer);
                if(ret < 0)
                    loge("VeFreeIommuAddr error\n");
            }

            if (munmap((void *)(tmp->user_virt), tmp->size) < 0)
            {
                loge("munmap 0x%p, size: %d failed \n", (void*)addr_vir, tmp->size);
            }

            /*close dma buffer fd*/
            close(tmp->fd_data.aw_fd);
            /* free buffer */
            handle_data.handle = tmp->fd_data.handle;

            ret = ioctl(g_alloc_context->fd, AW_MEM_ION_IOC_FREE, &handle_data);
            if (ret)
            {
                logv("TON_IOC_FREE failed \n");
            }

            aw_mem_list_del(&tmp->i_list);
            free(tmp);

            flag = 1;

            //------start-----------------
#if DEBUG_ION_REF==1
            int i = 0;
            for(i=0; i<ION_BUF_LEN; i++)
            {
                if(ion_buf_nodes_test[i].addr == addr_vir && ion_buf_nodes_test[i].size > 0){

                    cdx_use_mem -= ion_buf_nodes_test[i].size;
                    logv("--------cdx_use_mem = [%d MB], reduce size->[%d B]",\
                        cdx_use_mem/1024/1024, ion_buf_nodes_test[i].size);
                    ion_buf_nodes_test[i].addr = 0;
                    ion_buf_nodes_test[i].size = 0;

                    break;
                }
            }

            if(i>= ION_BUF_LEN){
                loge("error, ion buf len is large than [%d]", ION_BUF_LEN);
            }
#endif
            //--------------------------------

            break;
        }
    }

    if (0 == flag)
    {
        loge("ion_alloc_free failed, do not find virtual address: 0x%lx \n", addr_vir);
    }

    pthread_mutex_unlock(&g_mutex_alloc);
    return ;
}

void* aw_rt_ion_alloc_vir2phy(void * pbuf)
{
    int flag = 0;
    unsigned long addr_vir = (unsigned long)pbuf;
    unsigned long addr_phy = 0;
    buffer_node * tmp;

    if (0 == pbuf)
    {
        // logv("can not vir2phy NULL buffer \n");
        return 0;
    }

    pthread_mutex_lock(&g_mutex_alloc);

    aw_mem_list_for_each_entry(tmp, &g_alloc_context->list, i_list)
    {
        if (addr_vir >= tmp->vir
            && addr_vir < tmp->vir + tmp->size)
        {
            addr_phy = tmp->phy + addr_vir - tmp->vir;
            // logv("aw_rt_ion_alloc_vir2phy phy= 0x%08x vir= 0x%08x \n", addr_phy, addr_vir);
            flag = 1;
            break;
        }
    }

    if (0 == flag)
    {
        loge("aw_rt_ion_alloc_vir2phy failed, do not find virtual address: 0x%lx \n", addr_vir);
    }

    pthread_mutex_unlock(&g_mutex_alloc);

    return (void*)addr_phy;
}

void* aw_rt_ion_alloc_phy2vir(void * pbuf)
{
    int flag = 0;
    unsigned long addr_vir = 0;
    unsigned long addr_phy = (unsigned long)pbuf;
    buffer_node * tmp;

    if (0 == pbuf)
    {
        loge("can not phy2vir NULL buffer \n");
        return 0;
    }

    pthread_mutex_lock(&g_mutex_alloc);

    aw_mem_list_for_each_entry(tmp, &g_alloc_context->list, i_list)
    {
        if (addr_phy >= tmp->phy
            && addr_phy < tmp->phy + tmp->size)
        {
            addr_vir = tmp->vir + addr_phy - tmp->phy;
            flag = 1;
            break;
        }
    }

    if (0 == flag)
    {
        loge("aw_rt_ion_alloc_phy2vir failed, do not find physical address: 0x%lx \n", addr_phy);
    }

    pthread_mutex_unlock(&g_mutex_alloc);

    return (void*)addr_vir;
}

//* use the flush_cache in CONF_KERNEL_VERSION_3_4
#if 0
void ion_alloc_flush_cache(void* startAddr, int size)
{
    sunxi_cache_range range;
    struct aw_ion_custom_info custom_data;
    int ret;

    /* clean and invalid user cache */
    range.start = (unsigned long)startAddr;
    range.end = (unsigned long)startAddr + size;

    custom_data.aw_cmd = ION_IOC_SUNXI_FLUSH_RANGE;
    custom_data.aw_arg = (unsigned long)&range;

    ret = ioctl(g_alloc_context->fd, AW_MEM_ION_IOC_CUSTOM, &custom_data);
    if (ret)
    {
        loge("ION_IOC_CUSTOM failed \n");
    }

    return;
}
#endif

void aw_rt_ion_alloc_flush_cache(void* startAddr, int size)
{
    int ret;
    sunxi_cache_range range;

     /* clean and invalid user cache */
    range.start = (unsigned long)startAddr;
    range.end = (unsigned long)startAddr + size;
    //logv("start:%p, end:%lx, size:%lx(%ld)\n", startAddr, range.end, (long)size, (long)size);
    ret = ioctl(g_alloc_context->fd, ION_IOC_SUNXI_FLUSH_RANGE, &range);
    if (ret)
    {
        loge("ION_IOC_SUNXI_FLUSH_RANGE failed errno: %d, ret: %d", errno, ret);
    }

    return;
}

void aw_rt_ion_flush_cache_all()
{
    ioctl(g_alloc_context->fd, ION_IOC_SUNXI_FLUSH_ALL, 0);
}

int aw_rt_ion_alloc_memset(void* buf, int value, size_t n)
{
    memset(buf, value, n);
    return -1;
}

int aw_rt_ion_alloc_copy(void* dst, void* src, size_t n)
{
    memcpy(dst, src, n);
    return -1;
}

int aw_rt_ion_alloc_read(void* dst, void* src, size_t n)
{
    memcpy(dst, src, n);
    return -1;
}

int aw_rt_ion_alloc_write(void* dst, void* src, size_t n)
{
    memcpy(dst, src, n);
    return -1;
}

int aw_rt_ion_alloc_setup()
{
    return -1;
}

int aw_rt_ion_alloc_shutdown()
{
    return -1;
}

unsigned int aw_rt_ion_alloc_get_ve_addr_offset()
{
    if(g_alloc_context != NULL)
        return g_alloc_context->phyOffset;
    else
    {
        loge("g_alloc_context is NULL, please call aw_rt_ion_alloc_open\n");
        return 0;
    }
}