subr_autoconf.c (88a55912032a981bfdb62d340cab058188dd1dc2) subr_autoconf.c (e52368365db3c0a696b37bfc09d08b7093b41b57)
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and

--- 124 unchanged lines hidden (view full) ---

133 mtx_unlock(&intr_config_hook_lock);
134 return;
135 }
136 running = 1;
137
138 while (next_to_notify != NULL) {
139 hook_entry = next_to_notify;
140 next_to_notify = STAILQ_NEXT(hook_entry, ich_links);
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and

--- 124 unchanged lines hidden (view full) ---

133 mtx_unlock(&intr_config_hook_lock);
134 return;
135 }
136 running = 1;
137
138 while (next_to_notify != NULL) {
139 hook_entry = next_to_notify;
140 next_to_notify = STAILQ_NEXT(hook_entry, ich_links);
141 hook_entry->ich_state = ICHS_RUNNING;
141 mtx_unlock(&intr_config_hook_lock);
142 (*hook_entry->ich_func)(hook_entry->ich_arg);
143 mtx_lock(&intr_config_hook_lock);
144 }
145
146 running = 0;
147 mtx_unlock(&intr_config_hook_lock);
148}

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194 mtx_unlock(&intr_config_hook_lock);
195 printf("config_intrhook_establish: establishing an "
196 "already established hook.\n");
197 return (1);
198 }
199 STAILQ_INSERT_TAIL(&intr_config_hook_list, hook, ich_links);
200 if (next_to_notify == NULL)
201 next_to_notify = hook;
142 mtx_unlock(&intr_config_hook_lock);
143 (*hook_entry->ich_func)(hook_entry->ich_arg);
144 mtx_lock(&intr_config_hook_lock);
145 }
146
147 running = 0;
148 mtx_unlock(&intr_config_hook_lock);
149}

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195 mtx_unlock(&intr_config_hook_lock);
196 printf("config_intrhook_establish: establishing an "
197 "already established hook.\n");
198 return (1);
199 }
200 STAILQ_INSERT_TAIL(&intr_config_hook_list, hook, ich_links);
201 if (next_to_notify == NULL)
202 next_to_notify = hook;
203 hook->ich_state = ICHS_QUEUED;
202 mtx_unlock(&intr_config_hook_lock);
203 if (cold == 0)
204 /*
205 * XXX Call from a task since not all drivers expect
206 * to be re-entered at the time a hook is established.
207 */
208 /* XXX Sufficient for modules loaded after initial config??? */
209 run_interrupt_driven_config_hooks();

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221 ohook = malloc(sizeof(*ohook), M_DEVBUF, M_WAITOK);
222 ohook->och_func = func;
223 ohook->och_arg = arg;
224 ohook->och_hook.ich_func = config_intrhook_oneshot_func;
225 ohook->och_hook.ich_arg = ohook;
226 config_intrhook_establish(&ohook->och_hook);
227}
228
204 mtx_unlock(&intr_config_hook_lock);
205 if (cold == 0)
206 /*
207 * XXX Call from a task since not all drivers expect
208 * to be re-entered at the time a hook is established.
209 */
210 /* XXX Sufficient for modules loaded after initial config??? */
211 run_interrupt_driven_config_hooks();

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223 ohook = malloc(sizeof(*ohook), M_DEVBUF, M_WAITOK);
224 ohook->och_func = func;
225 ohook->och_arg = arg;
226 ohook->och_hook.ich_func = config_intrhook_oneshot_func;
227 ohook->och_hook.ich_arg = ohook;
228 config_intrhook_establish(&ohook->och_hook);
229}
230
229void
230config_intrhook_disestablish(struct intr_config_hook *hook)
231static void
232config_intrhook_disestablish_locked(struct intr_config_hook *hook)
231{
232 struct intr_config_hook *hook_entry;
233
233{
234 struct intr_config_hook *hook_entry;
235
234 mtx_lock(&intr_config_hook_lock);
235 STAILQ_FOREACH(hook_entry, &intr_config_hook_list, ich_links)
236 if (hook_entry == hook)
237 break;
238 if (hook_entry == NULL)
239 panic("config_intrhook_disestablish: disestablishing an "
240 "unestablished hook");
241
242 if (next_to_notify == hook)
243 next_to_notify = STAILQ_NEXT(hook, ich_links);
244 STAILQ_REMOVE(&intr_config_hook_list, hook, intr_config_hook, ich_links);
245 TSRELEASE("config hooks");
246
247 /* Wakeup anyone watching the list */
236 STAILQ_FOREACH(hook_entry, &intr_config_hook_list, ich_links)
237 if (hook_entry == hook)
238 break;
239 if (hook_entry == NULL)
240 panic("config_intrhook_disestablish: disestablishing an "
241 "unestablished hook");
242
243 if (next_to_notify == hook)
244 next_to_notify = STAILQ_NEXT(hook, ich_links);
245 STAILQ_REMOVE(&intr_config_hook_list, hook, intr_config_hook, ich_links);
246 TSRELEASE("config hooks");
247
248 /* Wakeup anyone watching the list */
249 hook->ich_state = ICHS_DONE;
248 wakeup(&intr_config_hook_list);
250 wakeup(&intr_config_hook_list);
251}
252
253void
254config_intrhook_disestablish(struct intr_config_hook *hook)
255{
256 mtx_lock(&intr_config_hook_lock);
257 config_intrhook_disestablish_locked(hook);
249 mtx_unlock(&intr_config_hook_lock);
250}
251
258 mtx_unlock(&intr_config_hook_lock);
259}
260
261int
262config_intrhook_drain(struct intr_config_hook *hook)
263{
264 mtx_lock(&intr_config_hook_lock);
265
266 /*
267 * The config hook has completed, so just return.
268 */
269 if (hook->ich_state == ICHS_DONE) {
270 mtx_unlock(&intr_config_hook_lock);
271 return (ICHS_DONE);
272 }
273
274 /*
275 * The config hook hasn't started running, just call disestablish.
276 */
277 if (hook->ich_state == ICHS_QUEUED) {
278 config_intrhook_disestablish_locked(hook);
279 mtx_unlock(&intr_config_hook_lock);
280 return (ICHS_QUEUED);
281 }
282
283 /*
284 * The config hook is running, so wait for it to complete and return.
285 */
286 while (hook->ich_state != ICHS_DONE) {
287 if (msleep(&intr_config_hook_list, &intr_config_hook_lock,
288 0, "confhd", hz) == EWOULDBLOCK) {
289 // XXX do I whine?
290 }
291 }
292 mtx_unlock(&intr_config_hook_lock);
293 return (ICHS_RUNNING);
294}
295
252#ifdef DDB
253#include <ddb/ddb.h>
254
255DB_SHOW_COMMAND(conifhk, db_show_conifhk)
256{
257 struct intr_config_hook *hook_entry;
258 char namebuf[64];
259 long offset;

--- 15 unchanged lines hidden --- 		296#ifdef DDB
297#include <ddb/ddb.h>
298
299DB_SHOW_COMMAND(conifhk, db_show_conifhk)
300{
301 struct intr_config_hook *hook_entry;
302 char namebuf[64];
303 long offset;

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