1 1.6 jmcneill /* $NetBSD: bcm2835_mbox.h,v 1.6 2019/12/30 18:43:38 jmcneill Exp $ */ 2 1.1 skrll 3 1.1 skrll /*- 4 1.1 skrll * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 1.1 skrll * All rights reserved. 6 1.1 skrll * 7 1.1 skrll * This code is derived from software contributed to The NetBSD Foundation 8 1.1 skrll * by Nick Hudson 9 1.1 skrll * 10 1.1 skrll * Redistribution and use in source and binary forms, with or without 11 1.1 skrll * modification, are permitted provided that the following conditions 12 1.1 skrll * are met: 13 1.1 skrll * 1. Redistributions of source code must retain the above copyright 14 1.1 skrll * notice, this list of conditions and the following disclaimer. 15 1.1 skrll * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 skrll * notice, this list of conditions and the following disclaimer in the 17 1.1 skrll * documentation and/or other materials provided with the distribution. 18 1.1 skrll * 19 1.1 skrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1 skrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1 skrll * POSSIBILITY OF SUCH DAMAGE. 30 1.1 skrll */ 31 1.1 skrll 32 1.1 skrll #ifndef _BCM2835_MBOX_H_ 33 1.1 skrll #define _BCM2835_MBOX_H_ 34 1.1 skrll 35 1.2 jakllsch #include <sys/bus.h> 36 1.2 jakllsch 37 1.5 skrll #define BCM2835_MBOX_NUMCHANNELS 16 38 1.5 skrll #define BCM2835_MBOX_CHANMASK 0xf 39 1.5 skrll 40 1.5 skrll #define BCM2835_MBOX_CHAN(chan) ((chan) & BCM2835_MBOX_CHANMASK) 41 1.5 skrll #define BCM2835_MBOX_DATA(data) ((data) & ~BCM2835_MBOX_CHANMASK) 42 1.5 skrll 43 1.5 skrll #define BCM2835_MBOX_MSG(chan, data) \ 44 1.5 skrll (BCM2835_MBOX_CHAN(chan) | BCM2835_MBOX_DATA(data)) 45 1.5 skrll 46 1.6 jmcneill struct bcm2835mbox_softc { 47 1.6 jmcneill device_t sc_dev; 48 1.6 jmcneill device_t sc_platdev; 49 1.6 jmcneill 50 1.6 jmcneill bus_space_tag_t sc_iot; 51 1.6 jmcneill bus_space_handle_t sc_ioh; 52 1.6 jmcneill bus_dma_tag_t sc_dmat; 53 1.6 jmcneill void *sc_intrh; 54 1.6 jmcneill 55 1.6 jmcneill kmutex_t sc_lock; 56 1.6 jmcneill kmutex_t sc_intr_lock; 57 1.6 jmcneill kcondvar_t sc_chan[BCM2835_MBOX_NUMCHANNELS]; 58 1.6 jmcneill uint32_t sc_mbox[BCM2835_MBOX_NUMCHANNELS]; 59 1.6 jmcneill }; 60 1.6 jmcneill 61 1.2 jakllsch void bcm2835_mbox_read(bus_space_tag_t, bus_space_handle_t, uint8_t, 62 1.2 jakllsch uint32_t *); 63 1.2 jakllsch void bcm2835_mbox_write(bus_space_tag_t, bus_space_handle_t, uint8_t, 64 1.2 jakllsch uint32_t); 65 1.2 jakllsch 66 1.6 jmcneill void bcmmbox_attach(struct bcm2835mbox_softc *); 67 1.6 jmcneill int bcmmbox_intr(void *); 68 1.1 skrll void bcmmbox_read(uint8_t, uint32_t *); 69 1.1 skrll void bcmmbox_write(uint8_t, uint32_t); 70 1.1 skrll 71 1.4 jmcneill int bcmmbox_request(uint8_t, void *, size_t, uint32_t *); 72 1.4 jmcneill 73 1.4 jmcneill struct bcmmbox_attach_args { 74 1.4 jmcneill bus_dma_tag_t baa_dmat; 75 1.4 jmcneill }; 76 1.4 jmcneill 77 1.1 skrll #endif /* _BCM2835_MBOX_H_ */ 78
Indexes created Fri Sep 26 20:09:58 GMT 2025