1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com> 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, 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/* 30 * Vybrid Family Miscellaneous System Control Module (MSCM) 31 * Chapter 66, Vybrid Reference Manual, Rev. 5, 07/2013 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD$"); 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/bus.h> 40#include <sys/kernel.h> 41#include <sys/module.h> 42#include <sys/malloc.h> 43#include <sys/rman.h> 44#include <sys/timeet.h> 45#include <sys/timetc.h> 46#include <sys/watchdog.h> 47 48#include <dev/ofw/openfirm.h> 49#include <dev/ofw/ofw_bus.h> 50#include <dev/ofw/ofw_bus_subr.h> 51 52#include <machine/bus.h> 53#include <machine/cpu.h> 54#include <machine/intr.h> 55 56#include <arm/freescale/vybrid/vf_common.h> 57 58#define VF_NINT 112 /* Total number of interrupts */ 59 60/* Int Router Shared Peripheral Routing Control */ 61#define MSCM_IRSPRC(n) (0x880 + 2 * n) 62 63struct mscm_softc { 64 struct resource *res[1]; 65 bus_space_tag_t bst; 66 bus_space_handle_t bsh; 67}; 68 69static struct resource_spec mscm_spec[] = { 70 { SYS_RES_MEMORY, 0, RF_ACTIVE }, 71 { -1, 0 } 72}; 73 74static int 75mscm_probe(device_t dev) 76{ 77 78 if (!ofw_bus_status_okay(dev)) 79 return (ENXIO); 80 81 if (!ofw_bus_is_compatible(dev, "fsl,mvf600-mscm")) 82 return (ENXIO); 83 84 device_set_desc(dev, "Vybrid Family Miscellaneous System Control Module"); 85 return (BUS_PROBE_DEFAULT); 86} 87 88static int 89mscm_attach(device_t dev) 90{ 91 struct mscm_softc *sc; 92 int i; 93 94 sc = device_get_softc(dev); 95 96 if (bus_alloc_resources(dev, mscm_spec, sc->res)) { 97 device_printf(dev, "could not allocate resources\n"); 98 return (ENXIO); 99 } 100 101 /* Memory interface */ 102 sc->bst = rman_get_bustag(sc->res[0]); 103 sc->bsh = rman_get_bushandle(sc->res[0]); 104 105 /* Route all the interrupts to CP0 */ 106 for (i = 0; i < VF_NINT; i++) 107 WRITE2(sc, MSCM_IRSPRC(i), 1); 108 109 return (0); 110} 111 112static device_method_t mscm_methods[] = { 113 DEVMETHOD(device_probe, mscm_probe), 114 DEVMETHOD(device_attach, mscm_attach), 115 { 0, 0 } 116}; 117 118static driver_t mscm_driver = { 119 "mscm", 120 mscm_methods, 121 sizeof(struct mscm_softc), 122}; 123 124static devclass_t mscm_devclass; 125 126DRIVER_MODULE(mscm, simplebus, mscm_driver, mscm_devclass, 0, 0); 127