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 "fman.h" 38 #include "fman_if.h" 39 40 #define FFMAN_DEVSTR "Freescale Frame Manager" 41 42 static int fman_fdt_probe(device_t dev); 43 44 static device_method_t fman_methods[] = { 45 /* Device interface */ 46 DEVMETHOD(device_probe, fman_fdt_probe), 47 DEVMETHOD(device_attach, fman_attach), 48 DEVMETHOD(device_detach, fman_detach), 49 50 DEVMETHOD(device_shutdown, fman_shutdown), 51 DEVMETHOD(device_suspend, fman_suspend), 52 DEVMETHOD(device_resume, fman_resume_dev), 53 54 DEVMETHOD(bus_alloc_resource, fman_alloc_resource), 55 DEVMETHOD(bus_activate_resource, fman_activate_resource), 56 DEVMETHOD(bus_release_resource, fman_release_resource), 57 58 DEVMETHOD(fman_get_revision, fman_get_revision), 59 DEVMETHOD(fman_reset_mac, fman_reset_mac), 60 DEVMETHOD(fman_set_port_params, fman_set_port_params), 61 DEVMETHOD(fman_get_qman_channel_id, fman_qman_channel_id), 62 63 DEVMETHOD_END 64 }; 65 66 DEFINE_CLASS_1(fman, fman_driver, fman_methods, 67 sizeof(struct fman_softc), simplebus_driver); 68 EARLY_DRIVER_MODULE(fman, simplebus, fman_driver, 0, 0, 69 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 70 71 72 static int 73 fman_fdt_probe(device_t dev) 74 { 75 76 if (!ofw_bus_status_okay(dev)) 77 return (ENXIO); 78 79 if (!ofw_bus_is_compatible(dev, "fsl,fman")) 80 return (ENXIO); 81 82 device_set_desc(dev, FFMAN_DEVSTR); 83 84 return (BUS_PROBE_DEFAULT); 85 } 86 87 uint32_t 88 fman_get_clock(struct fman_softc *sc) 89 { 90 device_t dev; 91 phandle_t node; 92 pcell_t fman_clock; 93 94 dev = sc->sc_base.dev; 95 node = ofw_bus_get_node(dev); 96 97 if ((OF_getprop(node, "clock-frequency", &fman_clock, 98 sizeof(fman_clock)) <= 0) || (fman_clock == 0)) { 99 device_printf(dev, 100 "could not acquire correct frequency from DTS\n"); 101 102 return (0); 103 } 104 105 return ((uint32_t)fman_clock); 106 } 107 108