1 /*- 2 * Copyright (c) 2015 Landon Fuller <landon@landonf.org> 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 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/module.h> 37 38 #include <dev/bhnd/bhnd_ids.h> 39 #include <dev/bhnd/bhndb/bhndbvar.h> 40 #include <dev/bhnd/bhndb/bhndb_hwdata.h> 41 42 #include "bcmavar.h" 43 44 #include "bcma_eromreg.h" 45 #include "bcma_eromvar.h" 46 47 /* 48 * Supports attachment of bcma(4) bus devices via a bhndb bridge. 49 */ 50 51 static int 52 bcma_bhndb_probe(device_t dev) 53 { 54 const struct bhnd_chipid *cid; 55 56 /* Check bus type */ 57 cid = BHNDB_GET_CHIPID(device_get_parent(dev), dev); 58 if (cid->chip_type != BHND_CHIPTYPE_BCMA) 59 return (ENXIO); 60 61 /* Delegate to default probe implementation */ 62 return (bcma_probe(dev)); 63 } 64 65 static int 66 bcma_bhndb_attach(device_t dev) 67 { 68 struct bcma_softc *sc; 69 const struct bhnd_chipid *cid; 70 struct resource *erom_res; 71 int error; 72 int rid; 73 74 sc = device_get_softc(dev); 75 76 /* Map the EROM resource and enumerate our children. */ 77 cid = BHNDB_GET_CHIPID(device_get_parent(dev), dev); 78 rid = 0; 79 erom_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, cid->enum_addr, 80 cid->enum_addr + BCMA_EROM_TABLE_SIZE, BCMA_EROM_TABLE_SIZE, 81 RF_ACTIVE); 82 if (erom_res == NULL) { 83 device_printf(dev, "failed to allocate EROM resource\n"); 84 return (ENXIO); 85 } 86 87 error = bcma_add_children(dev, erom_res, BCMA_EROM_TABLE_START); 88 89 /* Clean up */ 90 bus_release_resource(dev, SYS_RES_MEMORY, rid, erom_res); 91 if (error) 92 return (error); 93 94 /* Initialize full bridge configuration */ 95 error = BHNDB_INIT_FULL_CONFIG(device_get_parent(dev), dev, 96 bhndb_bcma_priority_table); 97 if (error) 98 return (error); 99 100 /* Ask our parent bridge to find the corresponding bridge core */ 101 sc->hostb_dev = BHNDB_FIND_HOSTB_DEVICE(device_get_parent(dev), dev); 102 103 /* Call our superclass' implementation */ 104 return (bcma_attach(dev)); 105 } 106 107 static int 108 bcma_bhndb_suspend_child(device_t dev, device_t child) 109 { 110 struct bcma_devinfo *dinfo; 111 int error; 112 113 if (device_get_parent(child) != dev) 114 BUS_SUSPEND_CHILD(device_get_parent(dev), child); 115 116 if (device_is_suspended(child)) 117 return (EBUSY); 118 119 dinfo = device_get_ivars(child); 120 121 /* Suspend the child */ 122 if ((error = bhnd_generic_br_suspend_child(dev, child))) 123 return (error); 124 125 /* Suspend child's agent resource */ 126 if (dinfo->res_agent != NULL) 127 BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev, 128 SYS_RES_MEMORY, dinfo->res_agent->res); 129 130 return (0); 131 } 132 133 static int 134 bcma_bhndb_resume_child(device_t dev, device_t child) 135 { 136 struct bcma_devinfo *dinfo; 137 int error; 138 139 if (device_get_parent(child) != dev) 140 BUS_SUSPEND_CHILD(device_get_parent(dev), child); 141 142 if (!device_is_suspended(child)) 143 return (EBUSY); 144 145 dinfo = device_get_ivars(child); 146 147 /* Resume child's agent resource */ 148 if (dinfo->res_agent != NULL) { 149 error = BHNDB_RESUME_RESOURCE(device_get_parent(dev), dev, 150 SYS_RES_MEMORY, dinfo->res_agent->res); 151 if (error) 152 return (error); 153 } 154 155 /* Resume the child */ 156 if ((error = bhnd_generic_br_resume_child(dev, child))) { 157 /* On failure, re-suspend the agent resource */ 158 if (dinfo->res_agent != NULL) { 159 BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev, 160 SYS_RES_MEMORY, dinfo->res_agent->res); 161 } 162 163 return (error); 164 } 165 166 return (0); 167 } 168 169 static device_method_t bcma_bhndb_methods[] = { 170 /* Device interface */ 171 DEVMETHOD(device_probe, bcma_bhndb_probe), 172 DEVMETHOD(device_attach, bcma_bhndb_attach), 173 174 /* Bus interface */ 175 DEVMETHOD(bus_suspend_child, bcma_bhndb_suspend_child), 176 DEVMETHOD(bus_resume_child, bcma_bhndb_resume_child), 177 178 DEVMETHOD_END 179 }; 180 181 DEFINE_CLASS_2(bhnd, bcma_bhndb_driver, bcma_bhndb_methods, 182 sizeof(struct bcma_softc), bhnd_bhndb_driver, bcma_driver); 183 184 DRIVER_MODULE(bcma_bhndb, bhndb, bcma_bhndb_driver, bhnd_devclass, NULL, NULL); 185 186 MODULE_VERSION(bcma_bhndb, 1); 187 MODULE_DEPEND(bcma_bhndb, bcma, 1, 1, 1); 188 MODULE_DEPEND(bcma_bhndb, bhnd, 1, 1, 1); 189 MODULE_DEPEND(bcma_bhndb, bhndb, 1, 1, 1); 190