ppbus_conf.c revision 1.4
1 /* $NetBSD: ppbus_conf.c,v 1.4 2004/02/01 17:28:48 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998, 1999 Nicolas Souchu 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * FreeBSD: src/sys/dev/ppbus/ppbconf.c,v 1.17.2.1 2000/05/24 00:20:57 n_hibma Exp 29 * 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: ppbus_conf.c,v 1.4 2004/02/01 17:28:48 jdolecek Exp $"); 34 35 #include "opt_ppbus.h" 36 #include "opt_ppbus_1284.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <sys/proc.h> 43 44 #include <dev/ppbus/ppbus_1284.h> 45 #include <dev/ppbus/ppbus_base.h> 46 #include <dev/ppbus/ppbus_conf.h> 47 #include <dev/ppbus/ppbus_device.h> 48 #include <dev/ppbus/ppbus_var.h> 49 50 /* Probe, attach, and detach functions for ppbus. */ 51 static int ppbus_probe __P((struct device *, struct cfdata *, void *)); 52 static void ppbus_attach __P((struct device *, struct device *, void *)); 53 static int ppbus_detach __P((struct device *, int)); 54 55 /* Utility function prototypes */ 56 static int ppbus_print_child(void *, const char *); 57 static int ppbus_search_children(struct device *, struct cfdata *, void *); 58 59 60 CFATTACH_DECL(ppbus, sizeof(struct ppbus_softc), ppbus_probe, ppbus_attach, 61 ppbus_detach, NULL); 62 63 /* Probe function for ppbus. */ 64 static int 65 ppbus_probe(struct device * parent, struct cfdata * cf, void * aux) 66 { 67 struct parport_adapter * sc_link = aux; 68 69 /* Check adapter for consistency */ 70 if( 71 /* Required methods for all parports */ 72 sc_link->parport_io == NULL || 73 sc_link->parport_exec_microseq == NULL || 74 sc_link->parport_setmode == NULL || 75 sc_link->parport_getmode == NULL || 76 sc_link->parport_read == NULL || 77 sc_link->parport_write == NULL || 78 sc_link->parport_read_ivar == NULL || 79 sc_link->parport_write_ivar == NULL || 80 /* Methods which conditional exist based on capabilities */ 81 ((sc_link->capabilities & PPBUS_HAS_EPP) && 82 (sc_link->parport_reset_epp_timeout == NULL)) || 83 ((sc_link->capabilities & PPBUS_HAS_ECP) && 84 (sc_link->parport_ecp_sync == NULL)) || 85 ((sc_link->capabilities & PPBUS_HAS_DMA) && 86 (sc_link->parport_dma_malloc == NULL || 87 sc_link->parport_dma_free == NULL)) || 88 ((sc_link->capabilities & PPBUS_HAS_INTR) && 89 (sc_link->parport_add_handler == NULL || 90 sc_link->parport_remove_handler == NULL)) 91 ) { 92 93 #ifdef PPBUS_DEBUG 94 printf("%s(%s): parport_adaptor is incomplete. Child device " 95 "probe failed.\n", __func__, parent->dv_xname); 96 #endif 97 return 0; 98 } 99 else { 100 return 1; 101 } 102 } 103 104 /* Attach function for ppbus. */ 105 static void 106 ppbus_attach(struct device * parent, struct device * self, void * aux) 107 { 108 struct ppbus_softc * ppbus = (struct ppbus_softc *) self; 109 struct parport_adapter * sc_link = aux; 110 struct ppbus_attach_args args; 111 112 printf("\n"); 113 114 /* Initialize config data from adapter (bus + device methods) */ 115 args.capabilities = ppbus->sc_capabilities = sc_link->capabilities; 116 ppbus->ppbus_io = sc_link->parport_io; 117 ppbus->ppbus_exec_microseq = sc_link->parport_exec_microseq; 118 ppbus->ppbus_reset_epp_timeout = sc_link-> 119 parport_reset_epp_timeout; 120 ppbus->ppbus_setmode = sc_link->parport_setmode; 121 ppbus->ppbus_getmode = sc_link->parport_getmode; 122 ppbus->ppbus_ecp_sync = sc_link->parport_ecp_sync; 123 ppbus->ppbus_read = sc_link->parport_read; 124 ppbus->ppbus_write = sc_link->parport_write; 125 ppbus->ppbus_read_ivar = sc_link->parport_read_ivar; 126 ppbus->ppbus_write_ivar = sc_link->parport_write_ivar; 127 ppbus->ppbus_dma_malloc = sc_link->parport_dma_malloc; 128 ppbus->ppbus_dma_free = sc_link->parport_dma_free; 129 ppbus->ppbus_add_handler = sc_link->parport_add_handler; 130 ppbus->ppbus_remove_handler = sc_link->parport_remove_handler; 131 132 /* Initially there is no device owning the bus */ 133 ppbus->ppbus_owner = NULL; 134 135 /* Initialize locking structures */ 136 lockinit(&(ppbus->sc_lock), PPBUSPRI | PCATCH, "ppbuslock", 0, 137 LK_NOWAIT); 138 139 /* Set up bus mode and ieee state */ 140 ppbus->sc_mode = ppbus->ppbus_getmode(self->dv_parent); 141 ppbus->sc_use_ieee = 1; 142 ppbus->sc_1284_state = PPBUS_FORWARD_IDLE; 143 ppbus->sc_1284_error = PPBUS_NO_ERROR; 144 145 /* Record device's sucessful attachment */ 146 ppbus->sc_dev_ok = PPBUS_OK; 147 148 #ifndef DONTPROBE_1284 149 /* detect IEEE1284 compliant devices */ 150 if(ppbus_scan_bus(self)) { 151 printf("%s: No IEEE1284 device found.\n", self->dv_xname); 152 } 153 else { 154 printf("%s: IEEE1284 device found.\n", self->dv_xname); 155 /* 156 * Detect device ID (interrupts must be disabled because we 157 * cannot do a ltsleep() to wait for it - no context) 158 */ 159 if(args.capabilities & PPBUS_HAS_INTR) { 160 int val = 0; 161 if(ppbus_write_ivar(self, PPBUS_IVAR_INTR, &val) != 0) { 162 printf(" <problem initializing interrupt " 163 "usage>"); 164 } 165 } 166 ppbus_pnp_detect(self); 167 } 168 #endif /* !DONTPROBE_1284 */ 169 170 /* Configure child devices */ 171 SLIST_INIT(&(ppbus->sc_childlist_head)); 172 config_search(ppbus_search_children, self, &args); 173 174 return; 175 } 176 177 /* Detach function for ppbus. */ 178 static int 179 ppbus_detach(struct device * self, int flag) 180 { 181 struct ppbus_softc * ppbus = (struct ppbus_softc *) self; 182 struct ppbus_device_softc * child; 183 184 if(ppbus->sc_dev_ok != PPBUS_OK) { 185 if(!(flag & DETACH_QUIET)) 186 printf("%s: detach called on unattached device.\n", 187 ppbus->sc_dev.dv_xname); 188 if(!(flag & DETACH_FORCE)) 189 return 0; 190 if(!(flag & DETACH_QUIET)) 191 printf("%s: continuing detach (DETACH_FORCE).\n", 192 ppbus->sc_dev.dv_xname); 193 } 194 195 if(lockmgr(&(ppbus->sc_lock), LK_DRAIN, NULL)) { 196 if(!(flag & DETACH_QUIET)) 197 printf("%s: error while waiting for lock activity to " 198 "end.\n", ppbus->sc_dev.dv_xname); 199 if(!(flag & DETACH_FORCE)) 200 return 0; 201 if(!(flag & DETACH_QUIET)) 202 printf("%s: continuing detach (DETACH_FORCE).\n", 203 ppbus->sc_dev.dv_xname); 204 } 205 206 /* Detach children devices */ 207 while(!SLIST_EMPTY(&(ppbus->sc_childlist_head))) { 208 child = SLIST_FIRST(&(ppbus->sc_childlist_head)); 209 config_deactivate((struct device *)child); 210 if(config_detach((struct device *)child, flag)) { 211 if(!(flag & DETACH_QUIET)) 212 printf("%s: error detaching %s.", 213 ppbus->sc_dev.dv_xname, 214 child->sc_dev.dv_xname); 215 if(!(flag & DETACH_FORCE)) 216 return 0; 217 if(!(flag & DETACH_QUIET)) 218 printf("%s: continuing (DETACH_FORCE).\n", 219 ppbus->sc_dev.dv_xname); 220 } 221 SLIST_REMOVE_HEAD(&(ppbus->sc_childlist_head), entries); 222 } 223 224 if(!(flag & DETACH_QUIET)) 225 printf("%s: detached.\n", ppbus->sc_dev.dv_xname); 226 227 return 1; 228 } 229 230 231 /* Utility functions */ 232 233 /* Used by config_found_sm() to print out result of child probe */ 234 static int 235 ppbus_print_child(void * aux, const char * name) 236 { 237 if(name != NULL) { 238 printf("%s: child devices", name); 239 return UNCONF; 240 } 241 else { 242 return QUIET; 243 } 244 } 245 246 /* Search for children device and add to list */ 247 static int 248 ppbus_search_children(struct device * parent, struct cfdata * cf, void * aux) 249 { 250 struct ppbus_softc * ppbus = (struct ppbus_softc *) parent; 251 struct ppbus_device_softc * child; 252 int rval = 0; 253 254 if(config_match(parent, cf, aux) > 0) { 255 child = (struct ppbus_device_softc *) config_attach(parent, 256 cf, aux, ppbus_print_child); 257 if(child) { 258 SLIST_INSERT_HEAD(&(ppbus->sc_childlist_head), child, 259 entries); 260 rval = 1; 261 } 262 } 263 264 return rval; 265 } 266 267
Indexes created Thu Oct 02 14:10:14 GMT 2025