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