124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2017-08-24 chinesebear first version
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*/
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#include "synopGMAC_plat.h"
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#include "synopGMAC_Dev.h"
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#include <rthw.h>
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#include <rtthread.h>
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extern void flush_cache(unsigned long start_addr, unsigned long size);
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dma_addr_t __attribute__((weak)) gmac_dmamap(unsigned long va,u32 size)
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{
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return VA_TO_PA (va);
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//return UNCACHED_TO_PHYS(va);
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}
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/**
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* This is a wrapper function for Memory allocation routine. In linux Kernel
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* it it kmalloc function
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* @param[in] bytes in bytes to allocate
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*/
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void *plat_alloc_memory(u32 bytes)
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{
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//return (void*)malloc((size_t)bytes, M_DEVBUF, M_DONTWAIT);
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void *buf = (void*)rt_malloc((u32)bytes);
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flush_cache((unsigned long)buf, bytes);
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return buf;
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}
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/**
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* This is a wrapper function for consistent dma-able Memory allocation routine.
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* In linux Kernel, it depends on pci dev structure
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* @param[in] bytes in bytes to allocate
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*/
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//void *plat_alloc_consistent_dmaable_memory(struct synopGMACdevice *dev, u32 size, u32 *addr)
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void *plat_alloc_consistent_dmaable_memory(synopGMACdevice *pcidev, u32 size, u32 *addr)
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{
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void *buf;
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buf = (void*)rt_malloc((u32)(size+16));
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//CPU_IOFlushDCache( buf,size, SYNC_W);
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unsigned long i = (unsigned long)buf;
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// rt_kprintf("size = %d\n", size);
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// rt_kprintf("bufaddr = %p\n", buf);
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// rt_kprintf("i%%16 == %d\n", i%16);
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if(i%16 == 8){
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i += 8;
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}
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else if(i%16 == 4){
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i += 12;
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}
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else if(i%16 == 12){
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i += 4;
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}
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flush_cache(i, size);
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*addr =gmac_dmamap(i, size);
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buf = (unsigned char *)CACHED_TO_UNCACHED(i);
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// rt_kprintf("bufaddr = %p\n", buf);
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return buf;
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}
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/**
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* This is a wrapper function for freeing consistent dma-able Memory.
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* In linux Kernel, it depends on pci dev structure
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* @param[in] bytes in bytes to allocate
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*/
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//void plat_free_consistent_dmaable_memory(void * addr)
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void plat_free_consistent_dmaable_memory(synopGMACdevice *pcidev, u32 size, void * addr,u32 dma_addr)
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{
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rt_free((void*)PHYS_TO_CACHED(UNCACHED_TO_PHYS(addr)));
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return;
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}
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/**
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* This is a wrapper function for Memory free routine. In linux Kernel
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* it it kfree function
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* @param[in] buffer pointer to be freed
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*/
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void plat_free_memory(void *buffer)
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{
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rt_free(buffer);
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return ;
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}
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dma_addr_t plat_dma_map_single(void *hwdev, void *ptr,
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u32 size)
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{
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unsigned long addr = (unsigned long) ptr;
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//CPU_IOFlushDCache(addr,size, direction);
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flush_cache(addr, size);
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return gmac_dmamap(addr, size);
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}
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/**
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* This is a wrapper function for platform dependent delay
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* Take care while passing the argument to this function
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* @param[in] buffer pointer to be freed
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*/
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void plat_delay(u32 delay)
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{
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while (delay--);
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return;
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}
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