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50 lines
1.7 KiB
50 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0 |
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* |
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* Common header for the legacy SH DMA driver and the new dmaengine driver |
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* |
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* extracted from arch/sh/include/asm/dma-sh.h: |
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* |
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* Copyright (C) 2000 Takashi YOSHII |
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* Copyright (C) 2003 Paul Mundt |
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*/ |
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#ifndef DMA_REGISTER_H |
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#define DMA_REGISTER_H |
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/* DMA registers */ |
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#define SAR 0x00 /* Source Address Register */ |
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#define DAR 0x04 /* Destination Address Register */ |
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#define TCR 0x08 /* Transfer Count Register */ |
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#define CHCR 0x0C /* Channel Control Register */ |
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#define DMAOR 0x40 /* DMA Operation Register */ |
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/* DMAOR definitions */ |
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#define DMAOR_AE 0x00000004 /* Address Error Flag */ |
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#define DMAOR_NMIF 0x00000002 |
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#define DMAOR_DME 0x00000001 /* DMA Master Enable */ |
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/* Definitions for the SuperH DMAC */ |
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#define REQ_L 0x00000000 |
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#define REQ_E 0x00080000 |
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#define RACK_H 0x00000000 |
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#define RACK_L 0x00040000 |
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#define ACK_R 0x00000000 |
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#define ACK_W 0x00020000 |
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#define ACK_H 0x00000000 |
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#define ACK_L 0x00010000 |
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#define DM_INC 0x00004000 /* Destination addresses are incremented */ |
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#define DM_DEC 0x00008000 /* Destination addresses are decremented */ |
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#define DM_FIX 0x0000c000 /* Destination address is fixed */ |
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#define SM_INC 0x00001000 /* Source addresses are incremented */ |
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#define SM_DEC 0x00002000 /* Source addresses are decremented */ |
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#define SM_FIX 0x00003000 /* Source address is fixed */ |
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#define RS_IN 0x00000200 |
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#define RS_OUT 0x00000300 |
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#define RS_AUTO 0x00000400 /* Auto Request */ |
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#define RS_ERS 0x00000800 /* DMA extended resource selector */ |
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#define TS_BLK 0x00000040 |
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#define TM_BUR 0x00000020 |
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#define CHCR_DE 0x00000001 /* DMA Enable */ |
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#define CHCR_TE 0x00000002 /* Transfer End Flag */ |
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#define CHCR_IE 0x00000004 /* Interrupt Enable */ |
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#endif
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