ecf2d82159
* Synchronize the code of the rt mart branch to the master branch.
* TTY device
* Add lwP code from rt-smart
* Add vnode in DFS, but DFS will be re-write for rt-smart
* There are three libcpu for rt-smart:
* arm/cortex-a, arm/aarch64
* riscv64
Co-authored-by: Rbb666 <zhangbingru@rt-thread.com>
Co-authored-by: zhkag <zhkag@foxmail.com>
39 lines
829 B
C
39 lines
829 B
C
#include <stdio.h>
|
|
|
|
#include <hal_mem.h>
|
|
#include "sunxi_hal_common.h"
|
|
|
|
void dma_free_coherent(void *addr)
|
|
{
|
|
void *malloc_ptr = NULL;
|
|
if (!addr)
|
|
{
|
|
return;
|
|
}
|
|
malloc_ptr = (void *)*(unsigned long *)((unsigned long *)addr - 1);
|
|
hal_free(malloc_ptr);
|
|
}
|
|
|
|
void *dma_alloc_coherent(size_t size)
|
|
{
|
|
void *fake_ptr = NULL;
|
|
void *malloc_ptr = NULL;
|
|
|
|
malloc_ptr = hal_malloc(size + 2 * CACHELINE_LEN);
|
|
if ((unsigned long)malloc_ptr & (sizeof(long) - 1))
|
|
{
|
|
printf("error: mm_alloc not align. \r\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!malloc_ptr) {
|
|
return NULL;
|
|
}
|
|
|
|
fake_ptr = (void *)((unsigned long)(malloc_ptr + CACHELINE_LEN) & (~(CACHELINE_LEN - 1)));
|
|
*(unsigned long *)((unsigned long *)fake_ptr - 1) = (unsigned long)malloc_ptr;
|
|
|
|
return fake_ptr;
|
|
}
|
|
|