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