1 /*- 2 * Copyright (c) 2011-2012 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 "opt_platform.h" 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/bus.h> 33 #include <sys/module.h> 34 #include <sys/smp.h> 35 36 #include <machine/bus.h> 37 38 #include <dev/ofw/ofw_bus.h> 39 #include <dev/ofw/ofw_bus_subr.h> 40 #include <dev/ofw/ofw_subr.h> 41 42 #include "bman.h" 43 #include "bman_var.h" 44 #include "portals.h" 45 46 #define FBMAN_DEVSTR "Freescale Buffer Manager" 47 48 static int bman_fdt_probe(device_t); 49 50 static device_method_t bman_methods[] = { 51 /* Device interface */ 52 DEVMETHOD(device_probe, bman_fdt_probe), 53 DEVMETHOD(device_attach, bman_attach), 54 DEVMETHOD(device_detach, bman_detach), 55 56 DEVMETHOD(device_suspend, bman_suspend), 57 DEVMETHOD(device_resume, bman_resume), 58 DEVMETHOD(device_shutdown, bman_shutdown), 59 60 DEVMETHOD_END 61 }; 62 63 DEFINE_CLASS_0(bman, bman_driver, bman_methods, sizeof(struct bman_softc)); 64 EARLY_DRIVER_MODULE(bman, simplebus, bman_driver, 0, 0, BUS_PASS_SUPPORTDEV); 65 66 static int 67 bman_fdt_probe(device_t dev) 68 { 69 70 if (!ofw_bus_is_compatible(dev, "fsl,bman")) 71 return (ENXIO); 72 73 device_set_desc(dev, FBMAN_DEVSTR); 74 75 return (BUS_PROBE_DEFAULT); 76 } 77 78 /* 79 * BMAN Portals 80 */ 81 #define BMAN_PORT_DEVSTR "Freescale Buffer Manager - Portal" 82 83 static int portal_ncpus; 84 static device_probe_t bman_portal_fdt_probe; 85 static device_attach_t bman_portal_fdt_attach; 86 87 static device_method_t bman_portal_methods[] = { 88 /* Device interface */ 89 DEVMETHOD(device_probe, bman_portal_fdt_probe), 90 DEVMETHOD(device_attach, bman_portal_fdt_attach), 91 DEVMETHOD(device_detach, bman_portal_detach), 92 93 DEVMETHOD_END 94 }; 95 96 DEFINE_CLASS_0(bman_portal, bman_portal_driver, bman_portal_methods, 97 sizeof(struct bman_portal_softc)); 98 EARLY_DRIVER_MODULE(bman_portal, simplebus, bman_portal_driver, 0, 0, 99 BUS_PASS_SUPPORTDEV + BUS_PASS_ORDER_MIDDLE); 100 101 static int 102 bman_portal_fdt_probe(device_t dev) 103 { 104 if (!ofw_bus_is_compatible(dev, "fsl,bman-portal")) 105 return (ENXIO); 106 107 device_set_desc(dev, BMAN_PORT_DEVSTR); 108 return (BUS_PROBE_DEFAULT); 109 } 110 111 static int 112 bman_portal_fdt_attach(device_t dev) 113 { 114 int portal_cpu = portal_ncpus; 115 116 /* Don't attach to more portals than we have CPUs */ 117 if (mp_ncpus == portal_ncpus) 118 return (ENXIO); 119 120 portal_ncpus++; 121 122 return (bman_portal_attach(dev, portal_cpu)); 123 } 124