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/cdefs.h> 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/kernel.h> 31 #include <sys/bus.h> 32 #include <sys/module.h> 33 34 #include <dev/fdt/simplebus.h> 35 #include <dev/ofw/ofw_bus.h> 36 #include <dev/ofw/ofw_bus_subr.h> 37 38 #include <contrib/ncsw/inc/ncsw_ext.h> 39 #include <contrib/ncsw/inc/enet_ext.h> 40 41 #include "fman.h" 42 43 #define FFMAN_DEVSTR "Freescale Frame Manager" 44 45 static int fman_fdt_probe(device_t dev); 46 47 static device_method_t fman_methods[] = { 48 /* Device interface */ 49 DEVMETHOD(device_probe, fman_fdt_probe), 50 DEVMETHOD(device_attach, fman_attach), 51 DEVMETHOD(device_detach, fman_detach), 52 53 DEVMETHOD(device_shutdown, fman_shutdown), 54 DEVMETHOD(device_suspend, fman_suspend), 55 DEVMETHOD(device_resume, fman_resume_dev), 56 57 DEVMETHOD(bus_alloc_resource, fman_alloc_resource), 58 DEVMETHOD(bus_activate_resource, fman_activate_resource), 59 DEVMETHOD(bus_release_resource, fman_release_resource), 60 { 0, 0 } 61 }; 62 63 DEFINE_CLASS_1(fman, fman_driver, fman_methods, 64 sizeof(struct fman_softc), simplebus_driver); 65 EARLY_DRIVER_MODULE(fman, simplebus, fman_driver, 0, 0, 66 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 67 68 69 static int 70 fman_fdt_probe(device_t dev) 71 { 72 73 if (!ofw_bus_status_okay(dev)) 74 return (ENXIO); 75 76 if (!ofw_bus_is_compatible(dev, "fsl,fman")) 77 return (ENXIO); 78 79 device_set_desc(dev, FFMAN_DEVSTR); 80 81 return (BUS_PROBE_DEFAULT); 82 } 83 84 uint32_t 85 fman_get_clock(struct fman_softc *sc) 86 { 87 device_t dev; 88 phandle_t node; 89 pcell_t fman_clock; 90 91 dev = sc->sc_base.dev; 92 node = ofw_bus_get_node(dev); 93 94 if ((OF_getprop(node, "clock-frequency", &fman_clock, 95 sizeof(fman_clock)) <= 0) || (fman_clock == 0)) { 96 device_printf(dev, "could not acquire correct frequency " 97 "from DTS\n"); 98 99 return (0); 100 } 101 102 return ((uint32_t)fman_clock); 103 } 104 105