1 /*- 2 * Copyright (c) 2012 Semihalf. 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 #include <sys/param.h> 28 #include <sys/systm.h> 29 #include <sys/kernel.h> 30 #include <sys/bus.h> 31 #include <sys/module.h> 32 33 #include <dev/fdt/simplebus.h> 34 #include <dev/ofw/ofw_bus.h> 35 #include <dev/ofw/ofw_bus_subr.h> 36 37 #include <contrib/ncsw/inc/ncsw_ext.h> 38 #include <contrib/ncsw/inc/enet_ext.h> 39 40 #include "fman.h" 41 42 #define FFMAN_DEVSTR "Freescale Frame Manager" 43 44 static int fman_fdt_probe(device_t dev); 45 46 static device_method_t fman_methods[] = { 47 /* Device interface */ 48 DEVMETHOD(device_probe, fman_fdt_probe), 49 DEVMETHOD(device_attach, fman_attach), 50 DEVMETHOD(device_detach, fman_detach), 51 52 DEVMETHOD(device_shutdown, fman_shutdown), 53 DEVMETHOD(device_suspend, fman_suspend), 54 DEVMETHOD(device_resume, fman_resume_dev), 55 56 DEVMETHOD(bus_alloc_resource, fman_alloc_resource), 57 DEVMETHOD(bus_activate_resource, fman_activate_resource), 58 DEVMETHOD(bus_release_resource, fman_release_resource), 59 { 0, 0 } 60 }; 61 62 DEFINE_CLASS_1(fman, fman_driver, fman_methods, 63 sizeof(struct fman_softc), simplebus_driver); 64 EARLY_DRIVER_MODULE(fman, simplebus, fman_driver, 0, 0, 65 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 66 67 68 static int 69 fman_fdt_probe(device_t dev) 70 { 71 72 if (!ofw_bus_status_okay(dev)) 73 return (ENXIO); 74 75 if (!ofw_bus_is_compatible(dev, "fsl,fman")) 76 return (ENXIO); 77 78 device_set_desc(dev, FFMAN_DEVSTR); 79 80 return (BUS_PROBE_DEFAULT); 81 } 82 83 uint32_t 84 fman_get_clock(struct fman_softc *sc) 85 { 86 device_t dev; 87 phandle_t node; 88 pcell_t fman_clock; 89 90 dev = sc->sc_base.dev; 91 node = ofw_bus_get_node(dev); 92 93 if ((OF_getprop(node, "clock-frequency", &fman_clock, 94 sizeof(fman_clock)) <= 0) || (fman_clock == 0)) { 95 device_printf(dev, "could not acquire correct frequency " 96 "from DTS\n"); 97 98 return (0); 99 } 100 101 return ((uint32_t)fman_clock); 102 } 103 104