1 /*- 2 * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * Vybrid Family Miscellaneous System Control Module (MSCM) 29 * Chapter 66, Vybrid Reference Manual, Rev. 5, 07/2013 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/bus.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/malloc.h> 41 #include <sys/rman.h> 42 #include <sys/timeet.h> 43 #include <sys/timetc.h> 44 #include <sys/watchdog.h> 45 46 #include <dev/fdt/fdt_common.h> 47 #include <dev/ofw/openfirm.h> 48 #include <dev/ofw/ofw_bus.h> 49 #include <dev/ofw/ofw_bus_subr.h> 50 51 #include <machine/bus.h> 52 #include <machine/cpu.h> 53 #include <machine/intr.h> 54 55 #include <arm/freescale/vybrid/vf_common.h> 56 57 #define VF_NINT 112 /* Total number of interrupts */ 58 59 /* Int Router Shared Peripheral Routing Control */ 60 #define MSCM_IRSPRC(n) (0x880 + 2 * n) 61 62 struct mscm_softc { 63 struct resource *res[1]; 64 bus_space_tag_t bst; 65 bus_space_handle_t bsh; 66 }; 67 68 static struct resource_spec mscm_spec[] = { 69 { SYS_RES_MEMORY, 0, RF_ACTIVE }, 70 { -1, 0 } 71 }; 72 73 static int 74 mscm_probe(device_t dev) 75 { 76 77 if (!ofw_bus_status_okay(dev)) 78 return (ENXIO); 79 80 if (!ofw_bus_is_compatible(dev, "fsl,mvf600-mscm")) 81 return (ENXIO); 82 83 device_set_desc(dev, "Vybrid Family Miscellaneous System Control Module"); 84 return (BUS_PROBE_DEFAULT); 85 } 86 87 static int 88 mscm_attach(device_t dev) 89 { 90 struct mscm_softc *sc; 91 int i; 92 93 sc = device_get_softc(dev); 94 95 if (bus_alloc_resources(dev, mscm_spec, sc->res)) { 96 device_printf(dev, "could not allocate resources\n"); 97 return (ENXIO); 98 } 99 100 /* Memory interface */ 101 sc->bst = rman_get_bustag(sc->res[0]); 102 sc->bsh = rman_get_bushandle(sc->res[0]); 103 104 /* Route all the interrupts to CP0 */ 105 for (i = 0; i < VF_NINT; i++) 106 WRITE2(sc, MSCM_IRSPRC(i), 1); 107 108 return (0); 109 } 110 111 static device_method_t mscm_methods[] = { 112 DEVMETHOD(device_probe, mscm_probe), 113 DEVMETHOD(device_attach, mscm_attach), 114 { 0, 0 } 115 }; 116 117 static driver_t mscm_driver = { 118 "mscm", 119 mscm_methods, 120 sizeof(struct mscm_softc), 121 }; 122 123 static devclass_t mscm_devclass; 124 125 DRIVER_MODULE(mscm, simplebus, mscm_driver, mscm_devclass, 0, 0); 126