1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 Marcel Moolenaar 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/bus.h> 35 #include <sys/conf.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 39 #include <dev/ofw/ofw_bus.h> 40 41 #include <machine/bus.h> 42 #include <sys/rman.h> 43 #include <machine/resource.h> 44 45 #include <dev/scc/scc_bfe.h> 46 47 #define MACIO_REGSHFT 4 48 #define MACIO_RCLK 230400 49 50 static int 51 scc_macio_probe(device_t dev) 52 { 53 struct scc_softc *sc; 54 const char *nm; 55 56 sc = device_get_softc(dev); 57 nm = ofw_bus_get_name(dev); 58 /* Attach to modern escc (channel shift 4 bits) */ 59 if (!strcmp(nm, "escc")) { 60 device_set_desc(dev, "Zilog Z8530 dual channel SCC"); 61 sc->sc_class = &scc_z8530_escc_class; 62 return (scc_bfe_probe(dev, MACIO_REGSHFT, MACIO_RCLK, 0)); 63 } 64 return (ENXIO); 65 } 66 67 static int 68 scc_macio_attach(device_t dev) 69 { 70 71 return (scc_bfe_attach(dev, 3)); 72 } 73 74 static device_method_t scc_macio_methods[] = { 75 /* Device interface */ 76 DEVMETHOD(device_probe, scc_macio_probe), 77 DEVMETHOD(device_attach, scc_macio_attach), 78 DEVMETHOD(device_detach, scc_bfe_detach), 79 80 DEVMETHOD(bus_alloc_resource, scc_bus_alloc_resource), 81 DEVMETHOD(bus_release_resource, scc_bus_release_resource), 82 DEVMETHOD(bus_get_resource, scc_bus_get_resource), 83 DEVMETHOD(bus_read_ivar, scc_bus_read_ivar), 84 DEVMETHOD(bus_setup_intr, scc_bus_setup_intr), 85 DEVMETHOD(bus_teardown_intr, scc_bus_teardown_intr), 86 87 DEVMETHOD_END 88 }; 89 90 static driver_t scc_macio_driver = { 91 scc_driver_name, 92 scc_macio_methods, 93 sizeof(struct scc_softc), 94 }; 95 96 DRIVER_MODULE(scc, macio, scc_macio_driver, NULL, NULL); 97