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/**\file
* This file defines the wrapper for the platform/OS related functions
* The function definitions needs to be modified according to the platform
* and the Operating system used.
* This file should be handled with greatest care while porting the driver
* to a different platform running different operating system other than
* Linux 2.6.xx.
* \internal
* ----------------------------REVISION HISTORY-----------------------------
* Synopsys 01/Aug/2007 Created
*/
/*
* File : synopGMAC_plat.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) chinesebear
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2017-08-24 chinesebear first version
*/
#include "synopGMAC_plat.h"
#include "synopGMAC_Dev.h"
#include <rthw.h>
#include <rtthread.h>
extern void flush_cache(unsigned long start_addr, unsigned long size);
dma_addr_t __attribute__((weak)) gmac_dmamap(unsigned long va,u32 size)
{
return VA_TO_PA (va);
//return UNCACHED_TO_PHYS(va);
}
/**
* This is a wrapper function for Memory allocation routine. In linux Kernel
* it it kmalloc function
* @param[in] bytes in bytes to allocate
*/
void *plat_alloc_memory(u32 bytes)
{
//return (void*)malloc((size_t)bytes, M_DEVBUF, M_DONTWAIT);
void *buf = (void*)rt_malloc((u32)bytes);
flush_cache((unsigned long)buf, bytes);
return buf;
}
/**
* This is a wrapper function for consistent dma-able Memory allocation routine.
* In linux Kernel, it depends on pci dev structure
* @param[in] bytes in bytes to allocate
*/
//void *plat_alloc_consistent_dmaable_memory(struct synopGMACdevice *dev, u32 size, u32 *addr)
void *plat_alloc_consistent_dmaable_memory(synopGMACdevice *pcidev, u32 size, u32 *addr)
{
void *buf;
buf = (void*)rt_malloc((u32)(size+16));
//CPU_IOFlushDCache( buf,size, SYNC_W);
unsigned long i = (unsigned long)buf;
// rt_kprintf("size = %d\n", size);
// rt_kprintf("bufaddr = %p\n", buf);
// rt_kprintf("i%%16 == %d\n", i%16);
if(i%16 == 8){
i += 8;
}
else if(i%16 == 4){
i += 12;
}
else if(i%16 == 12){
i += 4;
}
flush_cache(i, size);
*addr =gmac_dmamap(i, size);
buf = (unsigned char *)CACHED_TO_UNCACHED(i);
// rt_kprintf("bufaddr = %p\n", buf);
return buf;
}
/**
* This is a wrapper function for freeing consistent dma-able Memory.
* In linux Kernel, it depends on pci dev structure
* @param[in] bytes in bytes to allocate
*/
//void plat_free_consistent_dmaable_memory(void * addr)
void plat_free_consistent_dmaable_memory(synopGMACdevice *pcidev, u32 size, void * addr,u32 dma_addr)
{
rt_free((void*)PHYS_TO_CACHED(UNCACHED_TO_PHYS(addr)));
return;
}
/**
* This is a wrapper function for Memory free routine. In linux Kernel
* it it kfree function
* @param[in] buffer pointer to be freed
*/
void plat_free_memory(void *buffer)
{
rt_free(buffer);
return ;
}
dma_addr_t plat_dma_map_single(void *hwdev, void *ptr,
u32 size)
{
unsigned long addr = (unsigned long) ptr;
//CPU_IOFlushDCache(addr,size, direction);
flush_cache(addr, size);
return gmac_dmamap(addr, size);
}
/**
* This is a wrapper function for platform dependent delay
* Take care while passing the argument to this function
* @param[in] buffer pointer to be freed
*/
void plat_delay(u32 delay)
{
while (delay--);
return;
}
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