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      1 /* $NetBSD: exi.h,v 1.2 2024/02/10 11:00:15 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2024 Jared McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _WII_DEV_EXI_H_
     30 #define _WII_DEV_EXI_H_
     31 
     32 typedef enum {
     33 	EXI_FREQ_1MHZ = 0,
     34 	EXI_FREQ_2MHZ = 1,
     35 	EXI_FREQ_4MHZ = 2,
     36 	EXI_FREQ_8MHZ = 3,
     37 	EXI_FREQ_16MHZ = 4,
     38 	EXI_FREQ_32MHZ = 5,
     39 } exi_freq_t;
     40 
     41 struct exi_attach_args {
     42 	uint32_t	eaa_id;
     43 	uint8_t		eaa_chan;
     44 	uint8_t		eaa_device;
     45 };
     46 
     47 void exi_select(uint8_t, uint8_t, exi_freq_t);
     48 void exi_unselect(uint8_t);
     49 void exi_send_imm(uint8_t, uint8_t, const void *, size_t);
     50 void exi_recv_imm(uint8_t, uint8_t, void *, size_t);
     51 void exi_recv_dma(uint8_t, uint8_t, void *, size_t);
     52 
     53 #endif /* _WII_DEV_EXI_H_ */
     54