88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* $Id: imx23_apbdma.h,v 1.1 2012/11/20 19:06:12 jkunz Exp $ */
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/*
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Petri Laakso.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ARM_IMX_IMX23_APBDMA_H_
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#define _ARM_IMX_IMX23_APBDMA_H_
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#include <sys/cdefs.h>
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/*
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* Public interface to apbdma for device drivers.
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*/
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void * apbdma_dmamem_alloc(device_t, int, bus_size_t);
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/*
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* Common definitions for both APBH and APBX DMA.
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*/
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#define APBH_DMA_N_CHANNELS 8
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#define APBX_DMA_N_CHANNELS 16
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#define CMDPIOWORDS_MAX 3
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/*
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* DMA command type.
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*/
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#define NO_DMA_XFER 0
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#define DMA_WRITE 1
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#define DMA_READ 2
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#define DMA_SENSE 3
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/*
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* Command word 0.
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*/
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#define NEXTCMDADDR __BITS(31, 0)
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/*
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* Command word 1.
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*/
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#define XFER_COUNT __BITS(31, 16)
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#define CMDPIOWORDS __BITS(15, 12)
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#define CMDWORD1_RSVD0 __BITS(11, 8)
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#define WAIT4ENDCMD __BIT(7)
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#define SEMAPHORE __BIT(6)
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#define NANDWAIT4READY __BIT(5)
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#define NANDLOCK __BIT(4)
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#define IRQONCMPLT __BIT(3)
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#define CHAIN __BIT(2)
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#define COMMAND __BITS(1, 0)
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/*
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* Command word 2.
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*/
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#define BUF_ADDR __BITS(31, 0)
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/*
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* Command word 3-n.
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*/
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#define PIOWORD __BITS(31, 0)
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#endif /* !_ARM_IMX_IMX23_APBDMA_H_ */
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