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 const struct bhnd_chipid *cid; 69 struct resource *erom_res; 70 int error; 71 int rid; 72 73 cid = BHNDB_GET_CHIPID(device_get_parent(dev), dev); 74 75 /* Map the EROM resource and enumerate our children. */ 76 rid = 0; 77 erom_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, cid->enum_addr, 78 cid->enum_addr + BCMA_EROM_TABLE_SIZE, BCMA_EROM_TABLE_SIZE, 79 RF_ACTIVE); 80 if (erom_res == NULL) { 81 device_printf(dev, "failed to allocate EROM resource\n"); 82 return (ENXIO); 83 } 84 85 error = bcma_add_children(dev, erom_res, BCMA_EROM_TABLE_START); 86 87 /* Clean up */ 88 bus_release_resource(dev, SYS_RES_MEMORY, rid, erom_res); 89 if (error) 90 return (error); 91 92 /* Initialize full bridge configuration */ 93 error = BHNDB_INIT_FULL_CONFIG(device_get_parent(dev), dev, 94 bhndb_bcma_priority_table); 95 if (error) 96 return (error); 97 98 /* Call our superclass' implementation */ 99 return (bcma_attach(dev)); 100 } 101 102 static int 103 bcma_bhndb_suspend_child(device_t dev, device_t child) 104 { 105 struct bcma_devinfo *dinfo; 106 int error; 107 108 if (device_get_parent(child) != dev) 109 BUS_SUSPEND_CHILD(device_get_parent(dev), child); 110 111 if (device_is_suspended(child)) 112 return (EBUSY); 113 114 dinfo = device_get_ivars(child); 115 116 /* Suspend the child */ 117 if ((error = bhnd_generic_br_suspend_child(dev, child))) 118 return (error); 119 120 /* Suspend child's agent resource */ 121 if (dinfo->res_agent != NULL) 122 BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev, 123 SYS_RES_MEMORY, dinfo->res_agent->res); 124 125 return (0); 126 } 127 128 static int 129 bcma_bhndb_resume_child(device_t dev, device_t child) 130 { 131 struct bcma_devinfo *dinfo; 132 int error; 133 134 if (device_get_parent(child) != dev) 135 BUS_SUSPEND_CHILD(device_get_parent(dev), child); 136 137 if (!device_is_suspended(child)) 138 return (EBUSY); 139 140 dinfo = device_get_ivars(child); 141 142 /* Resume child's agent resource */ 143 if (dinfo->res_agent != NULL) { 144 error = BHNDB_RESUME_RESOURCE(device_get_parent(dev), dev, 145 SYS_RES_MEMORY, dinfo->res_agent->res); 146 if (error) 147 return (error); 148 } 149 150 /* Resume the child */ 151 if ((error = bhnd_generic_br_resume_child(dev, child))) { 152 /* On failure, re-suspend the agent resource */ 153 if (dinfo->res_agent != NULL) { 154 BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev, 155 SYS_RES_MEMORY, dinfo->res_agent->res); 156 } 157 158 return (error); 159 } 160 161 return (0); 162 } 163 164 static device_method_t bcma_bhndb_methods[] = { 165 /* Device interface */ 166 DEVMETHOD(device_probe, bcma_bhndb_probe), 167 DEVMETHOD(device_attach, bcma_bhndb_attach), 168 169 /* Bus interface */ 170 DEVMETHOD(bus_suspend_child, bcma_bhndb_suspend_child), 171 DEVMETHOD(bus_resume_child, bcma_bhndb_resume_child), 172 173 DEVMETHOD_END 174 }; 175 176 DEFINE_CLASS_1(bhnd, bcma_bhndb_driver, bcma_bhndb_methods, 177 sizeof(struct bcma_softc), bcma_driver); 178 179 DRIVER_MODULE(bcma_bhndb, bhndb, bcma_bhndb_driver, bhnd_devclass, NULL, NULL); 180 181 MODULE_VERSION(bcma_bhndb, 1); 182 MODULE_DEPEND(bcma_bhndb, bcma, 1, 1, 1); 183 MODULE_DEPEND(bcma_bhndb, bhndb, 1, 1, 1); 184