convert rb532 to the new structure
[openwrt/svn-archive/archive.git] / target / linux / rb532-2.6 / files / include / asm-mips / rc32434 / dma_v.h
1 #ifndef __IDT_DMA_V_H__
2 #define __IDT_DMA_V_H__
3
4 /*******************************************************************************
5 *
6 * Copyright 2002 Integrated Device Technology, Inc.
7 * All rights reserved.
8 *
9 * DMA register definition.
10 *
11 * File : $Id: dma.h,v 1.3 2002/06/06 18:34:03 astichte Exp $
12 *
13 * Author : ryan.holmQVist@idt.com
14 * Date : 20011005
15 * Update :
16 * $Log: dma.h,v $
17 * Revision 1.3 2002/06/06 18:34:03 astichte
18 * Added XXX_PhysicalAddress and XXX_VirtualAddress
19 *
20 * Revision 1.2 2002/06/05 18:30:46 astichte
21 * Removed IDTField
22 *
23 * Revision 1.1 2002/05/29 17:33:21 sysarch
24 * jba File moved from vcode/include/idt/acacia
25 *
26 *
27 ******************************************************************************/
28 #include <asm/rc32434/dma.h>
29 #include <asm/rc32434/rc32434.h>
30 #define DMA_CHAN_OFFSET 0x14
31 #define IS_DMA_USED(X) (((X) & (DMAD_f_m | DMAD_d_m | DMAD_t_m)) != 0)
32 #define DMA_COUNT(count) \
33 ((count) & DMAD_count_m)
34
35 #define DMA_HALT_TIMEOUT 500
36
37
38 static inline int rc32434_halt_dma(DMA_Chan_t ch)
39 {
40 int timeout=1;
41 if (local_readl(&ch->dmac) & DMAC_run_m) {
42 local_writel(0, &ch->dmac);
43 for (timeout = DMA_HALT_TIMEOUT; timeout > 0; timeout--) {
44 if (local_readl(&ch->dmas) & DMAS_h_m) {
45 local_writel(0, &ch->dmas);
46 break;
47 }
48 }
49 }
50
51 return timeout ? 0 : 1;
52 }
53
54 static inline void rc32434_start_dma(DMA_Chan_t ch, u32 dma_addr)
55 {
56 local_writel(0, &ch->dmandptr);
57 local_writel(dma_addr, &ch->dmadptr);
58 }
59
60 static inline void rc32434_chain_dma(DMA_Chan_t ch, u32 dma_addr)
61 {
62 local_writel(dma_addr, &ch->dmandptr);
63 }
64
65 #endif // __IDT_DMA_V_H__
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