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dmacvar.h revision 1.2 
      1 /*	$NetBSD: dmacvar.h,v 1.2 2008/04/28 20:23:31 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /* DO NOT REORDER */
     33 enum dmac_channel {
     34 	D_CH0_VIF0 = 0,
     35 	D_CH1_VIF1,
     36 	D_CH2_GIF,
     37 	D_CH3_FROMIPU,
     38 	D_CH4_TOIPU,
     39 	D_CH5_SIF0,
     40 	D_CH6_SIF1,
     41 	D_CH7_SIF2,
     42 	D_CH8_FROMSPR,
     43 	D_CH9_TOSPR
     44 };
     45 
     46 extern u_int32_t __dmac_enabled_channel;
     47 
     48 void	dmac_init(void);
     49 
     50 /* start/stop */
     51 void	dmac_start_channel(enum dmac_channel);
     52 void	dmac_stop_channel(enum dmac_channel);
     53 void	dmac_sync_buffer(void);
     54 
     55 /* interrupt */
     56 int	dmac_intr(u_int32_t);
     57 void	*dmac_intr_establish(enum dmac_channel, int, int (*)(void *), void *);
     58 void	dmac_intr_disestablish(void *);
     59 void	dmac_intr_disable(enum dmac_channel);
     60 void	dmac_intr_enable(enum dmac_channel);
     61 void	dmac_update_mask(u_int32_t);
     62 
     63 /* polling */
     64 void	dmac_cpc_set(enum dmac_channel);
     65 void	dmac_cpc_clear(enum dmac_channel);
     66 void	dmac_cpc_poll(void);
     67 void	dmac_bus_poll(enum dmac_channel);	/* slow */
     68 
     69 /* misc */
     70 void	dmac_chcr_write(enum dmac_channel, u_int32_t);
     71