/* $NetBSD: ofbus.c,v 1.31 2022/01/22 11:49:18 thorpej Exp $ */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: ofbus.c,v 1.31 2022/01/22 11:49:18 thorpej Exp $"); #include #include #include #include int ofbus_match(device_t, cfdata_t, void *); void ofbus_attach(device_t, device_t, void *); static int ofbus_print(void *, const char *); CFATTACH_DECL_NEW(ofbus, 0, ofbus_match, ofbus_attach, NULL, NULL); static int ofbus_print(void *aux, const char *pnp) { struct ofbus_attach_args *oba = aux; if (pnp) aprint_normal("%s at %s", oba->oba_ofname, pnp); else aprint_normal(" (%s)", oba->oba_ofname); return UNCONF; } int ofbus_match(device_t parent, cfdata_t cf, void *aux) { struct ofbus_attach_args *oba = aux; if (strcmp(oba->oba_busname, "ofw")) return (0); if (!OF_child(oba->oba_phandle)) return (0); return (1); } #if defined(__arm32__) /* XXX temporary */ #define _OFBUS_ROOT_MACHDEP_SKIPNAMES \ "udp", \ "cpus", \ "mmu", \ "memory" #endif /* __arm32__ */ /* * Skip some well-known nodes in the root that contain no useful * child devices. */ static bool ofbus_skip_node_in_root(int phandle, char *name, size_t namesize) { static const char * const skip_names[] = { "aliases", "options", "openprom", "chosen", "packages", #ifdef _OFBUS_ROOT_MACHDEP_SKIPNAMES _OFBUS_ROOT_MACHDEP_SKIPNAMES #endif }; u_int i; name[0] = '\0'; if (OF_getprop(phandle, "name", name, namesize) <= 0) { return false; } for (i = 0; i < __arraycount(skip_names); i++) { if (strcmp(name, skip_names[i]) == 0) { return true; } } return false; } void ofbus_attach(device_t parent, device_t dev, void *aux) { struct ofbus_attach_args *oba = aux; struct ofbus_attach_args oba2; char name[64], type[64]; int child, units; bool rootbus; rootbus = oba->oba_phandle == OF_finddevice("/"); /* * If we are the OFW root, get the banner-name and model * properties and display them for informational purposes. */ if (rootbus) { int model_len, banner_len; model_len = OF_getprop(oba->oba_phandle, "model", name, sizeof(name)); banner_len = OF_getprop(oba->oba_phandle, "banner-name", type, sizeof(type)); if (banner_len > 0 && model_len > 0) { printf(": %s (%s)\n", type, name); } else if (model_len > 0) { printf(": %s\n", name); } else { printf("\n"); } } else { printf("\n"); } /* * This is a hack to make the probe work on the scsi (and ide) bus. * YES, I THINK IT IS A BUG IN THE OPENFIRMWARE TO NOT PROBE ALL * DEVICES ON THESE BUSSES. */ units = 1; name[0] = 0; if (OF_getprop(oba->oba_phandle, "name", name, sizeof name) > 0) { if (!strcmp(name, "scsi")) units = 7; /* What about wide or hostid != 7? XXX */ else if (!strcmp(name, "ide")) units = 2; } devhandle_t selfh = device_handle(dev); /* attach displays first */ for (child = OF_child(oba->oba_phandle); child != 0; child = OF_peer(child)) { oba2.oba_busname = "ofw"; type[0] = 0; if (OF_getprop(child, "device_type", type, sizeof(type)) <= 0) continue; if (strncmp(type, "display", sizeof(type)) != 0) continue; of_packagename(child, name, sizeof name); oba2.oba_phandle = child; for (oba2.oba_unit = 0; oba2.oba_unit < units; oba2.oba_unit++) { if (units > 1) { snprintf(oba2.oba_ofname, sizeof(oba2.oba_ofname), "%s@%d", name, oba2.oba_unit); } else { strlcpy(oba2.oba_ofname, name, sizeof(oba2.oba_ofname)); } config_found(dev, &oba2, ofbus_print, CFARGS(.devhandle = devhandle_from_of(selfh, child))); } } /* now the rest */ for (child = OF_child(oba->oba_phandle); child != 0; child = OF_peer(child)) { oba2.oba_busname = "ofw"; type[0] = 0; if (OF_getprop(child, "device_type", type, sizeof(type)) > 0) { if (strncmp(type, "display", sizeof(type)) == 0) continue; } if (rootbus && ofbus_skip_node_in_root(child, name, sizeof(name))) { continue; } of_packagename(child, name, sizeof name); oba2.oba_phandle = child; for (oba2.oba_unit = 0; oba2.oba_unit < units; oba2.oba_unit++) { if (units > 1) { snprintf(oba2.oba_ofname, sizeof(oba2.oba_ofname), "%s@%d", name, oba2.oba_unit); } else { strlcpy(oba2.oba_ofname, name, sizeof(oba2.oba_ofname)); } config_found(dev, &oba2, ofbus_print, CFARGS(.devhandle = devhandle_from_of(selfh, child))); } } }