1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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/param.h> 35 #include <sys/systm.h> 36 #include <sys/bus.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/malloc.h> 40 #include <sys/rman.h> 41 #include <sys/timeet.h> 42 #include <sys/timetc.h> 43 #include <sys/watchdog.h> 44 45 #include <dev/ofw/openfirm.h> 46 #include <dev/ofw/ofw_bus.h> 47 #include <dev/ofw/ofw_bus_subr.h> 48 49 #include <machine/bus.h> 50 #include <machine/cpu.h> 51 #include <machine/intr.h> 52 53 #include <arm/freescale/vybrid/vf_common.h> 54 55 #define VF_NINT 112 /* Total number of interrupts */ 56 57 /* Int Router Shared Peripheral Routing Control */ 58 #define MSCM_IRSPRC(n) (0x880 + 2 * n) 59 60 struct mscm_softc { 61 struct resource *res[1]; 62 bus_space_tag_t bst; 63 bus_space_handle_t bsh; 64 }; 65 66 static struct resource_spec mscm_spec[] = { 67 { SYS_RES_MEMORY, 0, RF_ACTIVE }, 68 { -1, 0 } 69 }; 70 71 static int 72 mscm_probe(device_t dev) 73 { 74 75 if (!ofw_bus_status_okay(dev)) 76 return (ENXIO); 77 78 if (!ofw_bus_is_compatible(dev, "fsl,mvf600-mscm")) 79 return (ENXIO); 80 81 device_set_desc(dev, "Vybrid Family Miscellaneous System Control Module"); 82 return (BUS_PROBE_DEFAULT); 83 } 84 85 static int 86 mscm_attach(device_t dev) 87 { 88 struct mscm_softc *sc; 89 int i; 90 91 sc = device_get_softc(dev); 92 93 if (bus_alloc_resources(dev, mscm_spec, sc->res)) { 94 device_printf(dev, "could not allocate resources\n"); 95 return (ENXIO); 96 } 97 98 /* Memory interface */ 99 sc->bst = rman_get_bustag(sc->res[0]); 100 sc->bsh = rman_get_bushandle(sc->res[0]); 101 102 /* Route all the interrupts to CP0 */ 103 for (i = 0; i < VF_NINT; i++) 104 WRITE2(sc, MSCM_IRSPRC(i), 1); 105 106 return (0); 107 } 108 109 static device_method_t mscm_methods[] = { 110 DEVMETHOD(device_probe, mscm_probe), 111 DEVMETHOD(device_attach, mscm_attach), 112 { 0, 0 } 113 }; 114 115 static driver_t mscm_driver = { 116 "mscm", 117 mscm_methods, 118 sizeof(struct mscm_softc), 119 }; 120 121 DRIVER_MODULE(mscm, simplebus, mscm_driver, 0, 0); 122