73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
|
#ifndef __IDT_DMA_V_H__
|
||
|
|
#define __IDT_DMA_V_H__
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* Copyright 2002 Integrated Device Technology, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* DMA register definition.
|
||
|
|
*
|
||
|
|
* File : $Id: dma.h,v 1.3 2002/06/06 18:34:03 astichte Exp $
|
||
|
|
*
|
||
|
|
* Author : ryan.holmQVist@idt.com
|
||
|
|
* Date : 20011005
|
||
|
|
* Update :
|
||
|
|
* $Log: dma.h,v $
|
||
|
|
* Revision 1.3 2002/06/06 18:34:03 astichte
|
||
|
|
* Added XXX_PhysicalAddress and XXX_VirtualAddress
|
||
|
|
*
|
||
|
|
* Revision 1.2 2002/06/05 18:30:46 astichte
|
||
|
|
* Removed IDTField
|
||
|
|
*
|
||
|
|
* Revision 1.1 2002/05/29 17:33:21 sysarch
|
||
|
|
* jba File moved from vcode/include/idt/acacia
|
||
|
|
*
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
#include <asm/rc32434/dma.h>
|
||
|
|
#include <asm/rc32434/rc32434.h>
|
||
|
|
#define DMA_CHAN_OFFSET 0x14
|
||
|
|
#define IS_DMA_USED(X) (((X) & (DMAD_f_m | DMAD_d_m | DMAD_t_m)) != 0)
|
||
|
|
#define DMA_COUNT(count) \
|
||
|
|
((count) & DMAD_count_m)
|
||
|
|
|
||
|
|
#define DMA_HALT_TIMEOUT 500
|
||
|
|
|
||
|
|
|
||
|
|
static inline int rc32434_halt_dma(DMA_Chan_t ch)
|
||
|
|
{
|
||
|
|
int timeout=1;
|
||
|
|
if (local_readl(&ch->dmac) & DMAC_run_m) {
|
||
|
|
local_writel(0, &ch->dmac);
|
||
|
|
for (timeout = DMA_HALT_TIMEOUT; timeout > 0; timeout--) {
|
||
|
|
if (local_readl(&ch->dmas) & DMAS_h_m) {
|
||
|
|
local_writel(0, &ch->dmas);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return timeout ? 0 : 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void rc32434_start_dma(DMA_Chan_t ch, u32 dma_addr)
|
||
|
|
{
|
||
|
|
local_writel(0, &ch->dmandptr);
|
||
|
|
local_writel(dma_addr, &ch->dmadptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void rc32434_chain_dma(DMA_Chan_t ch, u32 dma_addr)
|
||
|
|
{
|
||
|
|
local_writel(dma_addr, &ch->dmandptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // __IDT_DMA_V_H__
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|