1*eba5cacbSjkunz /* $Id: imx23_apbdma.h,v 1.1 2012/11/20 19:06:12 jkunz Exp $ */ 2*eba5cacbSjkunz 3*eba5cacbSjkunz /* 4*eba5cacbSjkunz * Copyright (c) 2012 The NetBSD Foundation, Inc. 5*eba5cacbSjkunz * All rights reserved. 6*eba5cacbSjkunz * 7*eba5cacbSjkunz * This code is derived from software contributed to The NetBSD Foundation 8*eba5cacbSjkunz * by Petri Laakso. 9*eba5cacbSjkunz * 10*eba5cacbSjkunz * Redistribution and use in source and binary forms, with or without 11*eba5cacbSjkunz * modification, are permitted provided that the following conditions 12*eba5cacbSjkunz * are met: 13*eba5cacbSjkunz * 1. Redistributions of source code must retain the above copyright 14*eba5cacbSjkunz * notice, this list of conditions and the following disclaimer. 15*eba5cacbSjkunz * 2. Redistributions in binary form must reproduce the above copyright 16*eba5cacbSjkunz * notice, this list of conditions and the following disclaimer in the 17*eba5cacbSjkunz * documentation and/or other materials provided with the distribution. 18*eba5cacbSjkunz * 19*eba5cacbSjkunz * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*eba5cacbSjkunz * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*eba5cacbSjkunz * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*eba5cacbSjkunz * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*eba5cacbSjkunz * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*eba5cacbSjkunz * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*eba5cacbSjkunz * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*eba5cacbSjkunz * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*eba5cacbSjkunz * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*eba5cacbSjkunz * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*eba5cacbSjkunz * POSSIBILITY OF SUCH DAMAGE. 30*eba5cacbSjkunz */ 31*eba5cacbSjkunz 32*eba5cacbSjkunz #ifndef _ARM_IMX_IMX23_APBDMA_H_ 33*eba5cacbSjkunz #define _ARM_IMX_IMX23_APBDMA_H_ 34*eba5cacbSjkunz 35*eba5cacbSjkunz #include <sys/cdefs.h> 36*eba5cacbSjkunz 37*eba5cacbSjkunz /* 38*eba5cacbSjkunz * Public interface to apbdma for device drivers. 39*eba5cacbSjkunz */ 40*eba5cacbSjkunz void * apbdma_dmamem_alloc(device_t, int, bus_size_t); 41*eba5cacbSjkunz 42*eba5cacbSjkunz /* 43*eba5cacbSjkunz * Common definitions for both APBH and APBX DMA. 44*eba5cacbSjkunz */ 45*eba5cacbSjkunz #define APBH_DMA_N_CHANNELS 8 46*eba5cacbSjkunz #define APBX_DMA_N_CHANNELS 16 47*eba5cacbSjkunz 48*eba5cacbSjkunz #define CMDPIOWORDS_MAX 3 49*eba5cacbSjkunz 50*eba5cacbSjkunz /* 51*eba5cacbSjkunz * DMA command type. 52*eba5cacbSjkunz */ 53*eba5cacbSjkunz #define NO_DMA_XFER 0 54*eba5cacbSjkunz #define DMA_WRITE 1 55*eba5cacbSjkunz #define DMA_READ 2 56*eba5cacbSjkunz #define DMA_SENSE 3 57*eba5cacbSjkunz 58*eba5cacbSjkunz /* 59*eba5cacbSjkunz * Command word 0. 60*eba5cacbSjkunz */ 61*eba5cacbSjkunz #define NEXTCMDADDR __BITS(31, 0) 62*eba5cacbSjkunz 63*eba5cacbSjkunz /* 64*eba5cacbSjkunz * Command word 1. 65*eba5cacbSjkunz */ 66*eba5cacbSjkunz #define XFER_COUNT __BITS(31, 16) 67*eba5cacbSjkunz #define CMDPIOWORDS __BITS(15, 12) 68*eba5cacbSjkunz #define CMDWORD1_RSVD0 __BITS(11, 8) 69*eba5cacbSjkunz #define WAIT4ENDCMD __BIT(7) 70*eba5cacbSjkunz #define SEMAPHORE __BIT(6) 71*eba5cacbSjkunz #define NANDWAIT4READY __BIT(5) 72*eba5cacbSjkunz #define NANDLOCK __BIT(4) 73*eba5cacbSjkunz #define IRQONCMPLT __BIT(3) 74*eba5cacbSjkunz #define CHAIN __BIT(2) 75*eba5cacbSjkunz #define COMMAND __BITS(1, 0) 76*eba5cacbSjkunz 77*eba5cacbSjkunz /* 78*eba5cacbSjkunz * Command word 2. 79*eba5cacbSjkunz */ 80*eba5cacbSjkunz #define BUF_ADDR __BITS(31, 0) 81*eba5cacbSjkunz 82*eba5cacbSjkunz /* 83*eba5cacbSjkunz * Command word 3-n. 84*eba5cacbSjkunz */ 85*eba5cacbSjkunz #define PIOWORD __BITS(31, 0) 86*eba5cacbSjkunz 87*eba5cacbSjkunz #endif /* !_ARM_IMX_IMX23_APBDMA_H_ */ 88