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
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