2 * Copyright (c) 2005-2006 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/param.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
35 #include <contrib/dev/acpica/acpi.h>
36 #include <contrib/dev/acpica/acnamesp.h>
37 #include <dev/acpica/acpivar.h>
38 #include <dev/acpica/acpiio.h>
40 /* Hooks for the ACPI CA debugging infrastructure */
41 #define _COMPONENT ACPI_DOCK
42 ACPI_MODULE_NAME("DOCK")
44 /* For Notify handler */
45 #define ACPI_DOCK_NOTIFY_BUS_CHECK 0x00
46 #define ACPI_DOCK_NOTIFY_DEVICE_CHECK 0x01
47 #define ACPI_DOCK_NOTIFY_EJECT_REQUEST 0x03
49 /* For Docking status */
50 #define ACPI_DOCK_STATUS_UNKNOWN -1
51 #define ACPI_DOCK_STATUS_UNDOCKED 0
52 #define ACPI_DOCK_STATUS_DOCKED 1
54 #define ACPI_DOCK_UNLOCK 0 /* Allow device to be ejected */
55 #define ACPI_DOCK_LOCK 1 /* Prevent dev from being removed */
57 #define ACPI_DOCK_ISOLATE 0 /* Isolate from dock connector */
58 #define ACPI_DOCK_CONNECT 1 /* Connect to dock */
60 struct acpi_dock_softc {
65 struct sysctl_ctx_list *sysctl_ctx;
66 struct sysctl_oid *sysctl_tree;
69 ACPI_SERIAL_DECL(dock, "ACPI Docking Station");
76 acpi_dock_get_info(device_t dev)
78 struct acpi_dock_softc *sc;
81 sc = device_get_softc(dev);
82 h = acpi_get_handle(dev);
84 if (ACPI_FAILURE(acpi_GetInteger(h, "_STA", &sc->_sta)))
85 sc->_sta = ACPI_DOCK_STATUS_UNKNOWN;
86 if (ACPI_FAILURE(acpi_GetInteger(h, "_BDN", &sc->_bdn)))
87 sc->_bdn = ACPI_DOCK_STATUS_UNKNOWN;
88 if (ACPI_FAILURE(acpi_GetInteger(h, "_UID", &sc->_uid)))
89 sc->_uid = ACPI_DOCK_STATUS_UNKNOWN;
90 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
91 "_STA: %04x, _BDN: %04x, _UID: %04x\n", sc->_sta,
96 acpi_dock_execute_dck(device_t dev, int dock)
100 ACPI_OBJECT_LIST args;
105 h = acpi_get_handle(dev);
107 argobj.Type = ACPI_TYPE_INTEGER;
108 argobj.Integer.Value = dock;
110 args.Pointer = &argobj;
111 buf.Pointer = &retobj;
112 buf.Length = sizeof(retobj);
113 status = AcpiEvaluateObject(h, "_DCK", &args, &buf);
116 * When _DCK is called with 0, OSPM will ignore the return value.
118 if (dock == ACPI_DOCK_ISOLATE)
121 /* If _DCK returned 1, the request succeeded. */
122 if (ACPI_SUCCESS(status) && retobj.Type == ACPI_TYPE_INTEGER &&
123 retobj.Integer.Value == 1)
129 /* Lock devices while docked to prevent surprise removal. */
131 acpi_dock_execute_lck(device_t dev, int lock)
135 h = acpi_get_handle(dev);
136 acpi_SetInteger(h, "_LCK", lock);
139 /* Eject a device (i.e., motorized). */
141 acpi_dock_execute_ejx(device_t dev, int eject, int state)
147 h = acpi_get_handle(dev);
148 snprintf(ejx, sizeof(ejx), "_EJ%d", state);
149 status = acpi_SetInteger(h, ejx, eject);
150 if (ACPI_SUCCESS(status))
156 /* Find dependent devices. When their parent is removed, so are they. */
158 acpi_dock_is_ejd_device(ACPI_HANDLE dock_handle, ACPI_HANDLE handle)
161 ACPI_STATUS ret_status;
162 ACPI_BUFFER ejd_buffer;
167 ejd_buffer.Pointer = NULL;
168 ejd_buffer.Length = ACPI_ALLOCATE_BUFFER;
169 ret_status = AcpiEvaluateObject(handle, "_EJD", NULL, &ejd_buffer);
170 if (ACPI_FAILURE(ret_status))
173 obj = (ACPI_OBJECT *)ejd_buffer.Pointer;
174 if (dock_handle == acpi_GetReference(NULL, obj))
178 if (ejd_buffer.Pointer != NULL)
179 AcpiOsFree(ejd_buffer.Pointer);
189 acpi_dock_attach_later(void *context)
193 dev = (device_t)context;
195 if (!device_is_enabled(dev))
199 device_probe_and_attach(dev);
204 acpi_dock_insert_child(ACPI_HANDLE handle, UINT32 level, void *context,
207 device_t dock_dev, dev;
208 ACPI_HANDLE dock_handle;
210 dock_dev = (device_t)context;
211 dock_handle = acpi_get_handle(dock_dev);
213 if (!acpi_dock_is_ejd_device(dock_handle, handle))
216 ACPI_VPRINT(dock_dev, acpi_device_get_parent_softc(dock_dev),
217 "inserting device for %s\n", acpi_name(handle));
221 * If the system boot up w/o Docking, the devices under the dock
222 * still un-initialized, also control methods such as _INI, _STA
224 * Normal devices are initialized at booting by calling
225 * AcpiInitializeObjects(), however the devices under the dock
226 * need to be initialized here on the scheme of ACPICA.
228 ACPI_INIT_WALK_INFO Info;
230 AcpiNsWalkNamespace(ACPI_TYPE_ANY, handle,
231 100, TRUE, AcpiNsInitOneDevice, &Info, NULL);
234 dev = acpi_get_device(handle);
236 device_printf(dock_dev, "error: %s has no associated device\n",
241 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_dock_attach_later, dev);
248 acpi_dock_insert_children(device_t dev)
251 ACPI_HANDLE sb_handle;
253 status = AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle);
254 if (ACPI_SUCCESS(status)) {
255 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle,
256 100, acpi_dock_insert_child, dev, NULL);
261 acpi_dock_insert(device_t dev)
263 struct acpi_dock_softc *sc;
266 ACPI_SERIAL_ASSERT(dock);
268 sc = device_get_softc(dev);
269 h = acpi_get_handle(dev);
271 if (sc->status == ACPI_DOCK_STATUS_UNDOCKED ||
272 sc->status == ACPI_DOCK_STATUS_UNKNOWN) {
273 acpi_dock_execute_lck(dev, ACPI_DOCK_LOCK);
274 if (acpi_dock_execute_dck(dev, ACPI_DOCK_CONNECT) != 0) {
275 device_printf(dev, "_DCK failed\n");
280 acpi_dock_insert_children(dev);
281 sc->status = ACPI_DOCK_STATUS_DOCKED;
290 acpi_dock_eject_child(ACPI_HANDLE handle, UINT32 level, void *context,
293 device_t dock_dev, dev;
294 ACPI_HANDLE dock_handle;
296 dock_dev = *(device_t *)context;
297 dock_handle = acpi_get_handle(dock_dev);
299 if (!acpi_dock_is_ejd_device(dock_handle, handle))
302 ACPI_VPRINT(dock_dev, acpi_device_get_parent_softc(dock_dev),
303 "ejecting device for %s\n", acpi_name(handle));
305 dev = acpi_get_device(handle);
306 if (dev != NULL && device_is_attached(dev)) {
312 acpi_SetInteger(handle, "_EJ0", 0);
318 acpi_dock_eject_children(device_t dev)
320 ACPI_HANDLE sb_handle;
323 status = AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle);
324 if (ACPI_SUCCESS(status)) {
325 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle,
326 100, acpi_dock_eject_child, &dev, NULL);
331 acpi_dock_removal(device_t dev)
333 struct acpi_dock_softc *sc;
335 ACPI_SERIAL_ASSERT(dock);
337 sc = device_get_softc(dev);
338 if (sc->status == ACPI_DOCK_STATUS_DOCKED ||
339 sc->status == ACPI_DOCK_STATUS_UNKNOWN) {
340 acpi_dock_eject_children(dev);
341 if (acpi_dock_execute_dck(dev, ACPI_DOCK_ISOLATE) != 0)
344 acpi_dock_execute_lck(dev, ACPI_DOCK_UNLOCK);
346 if (acpi_dock_execute_ejx(dev, 1, 0) != 0) {
347 device_printf(dev, "_EJ0 failed\n");
351 sc->status = ACPI_DOCK_STATUS_UNDOCKED;
354 acpi_dock_get_info(dev);
356 device_printf(dev, "mechanical failure (%#x).\n", sc->_sta);
364 acpi_dock_device_check(device_t dev)
366 struct acpi_dock_softc *sc;
368 ACPI_SERIAL_ASSERT(dock);
370 sc = device_get_softc(dev);
371 acpi_dock_get_info(dev);
374 * If the _STA method indicates 'present' and 'functioning', the
375 * system is docked. If _STA does not exist for this device, it
378 if (sc->_sta == ACPI_DOCK_STATUS_UNKNOWN ||
379 ACPI_DEVICE_PRESENT(sc->_sta))
380 acpi_dock_insert(dev);
381 else if (sc->_sta == 0)
382 acpi_dock_removal(dev);
390 acpi_dock_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
394 dev = (device_t) context;
395 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
396 "got notification %#x\n", notify);
398 ACPI_SERIAL_BEGIN(dock);
400 case ACPI_DOCK_NOTIFY_BUS_CHECK:
401 case ACPI_DOCK_NOTIFY_DEVICE_CHECK:
402 acpi_dock_device_check(dev);
404 case ACPI_DOCK_NOTIFY_EJECT_REQUEST:
405 acpi_dock_removal(dev);
408 device_printf(dev, "unknown notify %#x\n", notify);
411 ACPI_SERIAL_END(dock);
415 acpi_dock_status_sysctl(SYSCTL_HANDLER_ARGS)
417 struct acpi_dock_softc *sc;
422 dev = (device_t)arg1;
424 sc = device_get_softc(dev);
427 ACPI_SERIAL_BEGIN(dock);
428 err = sysctl_handle_int(oidp, &status, 0, req);
429 if (err != 0 || req->newptr == NULL)
432 if (status != ACPI_DOCK_STATUS_UNDOCKED &&
433 status != ACPI_DOCK_STATUS_DOCKED) {
438 if (status == sc->status)
442 case ACPI_DOCK_STATUS_UNDOCKED:
443 acpi_dock_removal(dev);
445 case ACPI_DOCK_STATUS_DOCKED:
446 acpi_dock_device_check(dev);
453 ACPI_SERIAL_END(dock);
458 acpi_dock_probe(device_t dev)
462 h = acpi_get_handle(dev);
463 if (acpi_disabled("dock") ||
464 ACPI_FAILURE(AcpiGetHandle(h, "_DCK", &tmp)))
467 device_set_desc(dev, "ACPI Docking Station");
470 * XXX Somewhere else in the kernel panics on "sysctl kern" if we
471 * return a negative value here (reprobe ok).
477 acpi_dock_attach(device_t dev)
479 struct acpi_dock_softc *sc;
482 sc = device_get_softc(dev);
483 h = acpi_get_handle(dev);
484 if (sc == NULL || h == NULL)
487 sc->status = ACPI_DOCK_STATUS_UNKNOWN;
489 AcpiEvaluateObject(h, "_INI", NULL, NULL);
491 ACPI_SERIAL_BEGIN(dock);
493 acpi_dock_device_check(dev);
495 /* Get the sysctl tree */
496 sc->sysctl_ctx = device_get_sysctl_ctx(dev);
497 sc->sysctl_tree = device_get_sysctl_tree(dev);
499 SYSCTL_ADD_INT(sc->sysctl_ctx,
500 SYSCTL_CHILDREN(sc->sysctl_tree),
501 OID_AUTO, "_sta", CTLFLAG_RD,
502 &sc->_sta, 0, "Dock _STA");
503 SYSCTL_ADD_INT(sc->sysctl_ctx,
504 SYSCTL_CHILDREN(sc->sysctl_tree),
505 OID_AUTO, "_bdn", CTLFLAG_RD,
506 &sc->_bdn, 0, "Dock _BDN");
507 SYSCTL_ADD_INT(sc->sysctl_ctx,
508 SYSCTL_CHILDREN(sc->sysctl_tree),
509 OID_AUTO, "_uid", CTLFLAG_RD,
510 &sc->_uid, 0, "Dock _UID");
511 SYSCTL_ADD_PROC(sc->sysctl_ctx,
512 SYSCTL_CHILDREN(sc->sysctl_tree),
514 CTLTYPE_INT|CTLFLAG_RW, dev, 0,
515 acpi_dock_status_sysctl, "I",
516 "Dock/Undock operation");
518 ACPI_SERIAL_END(dock);
520 AcpiInstallNotifyHandler(h, ACPI_ALL_NOTIFY,
521 acpi_dock_notify_handler, dev);
526 static device_method_t acpi_dock_methods[] = {
527 /* Device interface */
528 DEVMETHOD(device_probe, acpi_dock_probe),
529 DEVMETHOD(device_attach, acpi_dock_attach),
534 static driver_t acpi_dock_driver = {
537 sizeof(struct acpi_dock_softc),
540 static devclass_t acpi_dock_devclass;
542 DRIVER_MODULE(acpi_dock, acpi, acpi_dock_driver, acpi_dock_devclass, 0, 0);
543 MODULE_DEPEND(acpi_dock, acpi, 1, 1, 1);