3 * Bill Paul <wpaul@windriver.com>. All rights reserved.
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.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
32 * $FreeBSD: src/sys/compat/ndis/subr_ntoskrnl.c,v 1.114 2011/02/21 09:01:34 brucec Exp $
35 #include <sys/ctype.h>
36 #include <sys/unistd.h>
37 #include <sys/param.h>
38 #include <sys/types.h>
39 #include <sys/errno.h>
40 #include <sys/systm.h>
41 #include <sys/malloc.h>
43 #include <sys/thread2.h>
44 #include <sys/mutex.h>
45 #include <sys/mutex2.h>
47 #include <sys/callout.h>
48 #include <sys/kernel.h>
50 #include <sys/condvar.h>
51 #include <sys/kthread.h>
52 #include <sys/module.h>
53 #include <sys/sched.h>
54 #include <sys/sysctl.h>
56 #include <machine/atomic.h>
57 #include <machine/stdarg.h>
61 #include <sys/objcache.h>
64 #include <vm/vm_param.h>
66 #include <vm/vm_kern.h>
67 #include <vm/vm_map.h>
68 #include <vm/vm_extern.h>
70 #include <emulation/ndis/pe_var.h>
71 #include <emulation/ndis/cfg_var.h>
72 #include <emulation/ndis/resource_var.h>
73 #include <emulation/ndis/ntoskrnl_var.h>
74 #include <emulation/ndis/hal_var.h>
75 #include <emulation/ndis/ndis_var.h>
79 #ifdef NTOSKRNL_DEBUG_TIMERS
80 static int sysctl_show_timers(SYSCTL_HANDLER_ARGS);
82 SYSCTL_PROC(_debug, OID_AUTO, ntoskrnl_timers, CTLTYPE_INT | CTLFLAG_RW,
83 NULL, 0, sysctl_show_timers, "I",
84 "Show ntoskrnl timer stats");
98 typedef struct kdpc_queue kdpc_queue;
102 struct thread *we_td;
105 typedef struct wb_ext wb_ext;
107 #define NTOSKRNL_TIMEOUTS 256
108 #ifdef NTOSKRNL_DEBUG_TIMERS
109 static uint64_t ntoskrnl_timer_fires;
110 static uint64_t ntoskrnl_timer_sets;
111 static uint64_t ntoskrnl_timer_reloads;
112 static uint64_t ntoskrnl_timer_cancels;
115 struct callout_entry {
116 struct callout ce_callout;
120 typedef struct callout_entry callout_entry;
122 static struct list_entry ntoskrnl_calllist;
123 static struct mtx ntoskrnl_calllock;
124 struct kuser_shared_data kuser_shared_data;
126 static struct list_entry ntoskrnl_intlist;
127 static kspin_lock ntoskrnl_intlock;
129 static uint8_t RtlEqualUnicodeString(unicode_string *,
130 unicode_string *, uint8_t);
131 static void RtlCopyString(ansi_string *, const ansi_string *);
132 static void RtlCopyUnicodeString(unicode_string *,
134 static irp *IoBuildSynchronousFsdRequest(uint32_t, device_object *,
135 void *, uint32_t, uint64_t *, nt_kevent *, io_status_block *);
136 static irp *IoBuildAsynchronousFsdRequest(uint32_t,
137 device_object *, void *, uint32_t, uint64_t *, io_status_block *);
138 static irp *IoBuildDeviceIoControlRequest(uint32_t,
139 device_object *, void *, uint32_t, void *, uint32_t,
140 uint8_t, nt_kevent *, io_status_block *);
141 static irp *IoAllocateIrp(uint8_t, uint8_t);
142 static void IoReuseIrp(irp *, uint32_t);
143 static void IoFreeIrp(irp *);
144 static void IoInitializeIrp(irp *, uint16_t, uint8_t);
145 static irp *IoMakeAssociatedIrp(irp *, uint8_t);
146 static uint32_t KeWaitForMultipleObjects(uint32_t,
147 nt_dispatch_header **, uint32_t, uint32_t, uint32_t, uint8_t,
148 int64_t *, wait_block *);
149 static void ntoskrnl_waittest(nt_dispatch_header *, uint32_t);
150 static void ntoskrnl_satisfy_wait(nt_dispatch_header *, struct thread *);
151 static void ntoskrnl_satisfy_multiple_waits(wait_block *);
152 static int ntoskrnl_is_signalled(nt_dispatch_header *, struct thread *);
153 static void ntoskrnl_insert_timer(ktimer *, int);
154 static void ntoskrnl_remove_timer(ktimer *);
155 #ifdef NTOSKRNL_DEBUG_TIMERS
156 static void ntoskrnl_show_timers(void);
158 static void ntoskrnl_timercall(void *);
159 static void ntoskrnl_dpc_thread(void *);
160 static void ntoskrnl_destroy_dpc_threads(void);
161 static void ntoskrnl_destroy_workitem_threads(void);
162 static void ntoskrnl_workitem_thread(void *);
163 static void ntoskrnl_workitem(device_object *, void *);
164 static void ntoskrnl_unicode_to_ascii(uint16_t *, char *, int);
165 static void ntoskrnl_ascii_to_unicode(char *, uint16_t *, int);
166 static uint8_t ntoskrnl_insert_dpc(list_entry *, kdpc *);
167 static void WRITE_REGISTER_USHORT(uint16_t *, uint16_t);
168 static uint16_t READ_REGISTER_USHORT(uint16_t *);
169 static void WRITE_REGISTER_ULONG(uint32_t *, uint32_t);
170 static uint32_t READ_REGISTER_ULONG(uint32_t *);
171 static void WRITE_REGISTER_UCHAR(uint8_t *, uint8_t);
172 static uint8_t READ_REGISTER_UCHAR(uint8_t *);
173 static int64_t _allmul(int64_t, int64_t);
174 static int64_t _alldiv(int64_t, int64_t);
175 static int64_t _allrem(int64_t, int64_t);
176 static int64_t _allshr(int64_t, uint8_t);
177 static int64_t _allshl(int64_t, uint8_t);
178 static uint64_t _aullmul(uint64_t, uint64_t);
179 static uint64_t _aulldiv(uint64_t, uint64_t);
180 static uint64_t _aullrem(uint64_t, uint64_t);
181 static uint64_t _aullshr(uint64_t, uint8_t);
182 static uint64_t _aullshl(uint64_t, uint8_t);
183 static slist_entry *ntoskrnl_pushsl(slist_header *, slist_entry *);
184 static void InitializeSListHead(slist_header *);
185 static slist_entry *ntoskrnl_popsl(slist_header *);
186 static void ExFreePoolWithTag(void *, uint32_t);
187 static void ExInitializePagedLookasideList(paged_lookaside_list *,
188 lookaside_alloc_func *, lookaside_free_func *,
189 uint32_t, size_t, uint32_t, uint16_t);
190 static void ExDeletePagedLookasideList(paged_lookaside_list *);
191 static void ExInitializeNPagedLookasideList(npaged_lookaside_list *,
192 lookaside_alloc_func *, lookaside_free_func *,
193 uint32_t, size_t, uint32_t, uint16_t);
194 static void ExDeleteNPagedLookasideList(npaged_lookaside_list *);
196 *ExInterlockedPushEntrySList(slist_header *,
197 slist_entry *, kspin_lock *);
199 *ExInterlockedPopEntrySList(slist_header *, kspin_lock *);
200 static uint32_t InterlockedIncrement(volatile uint32_t *);
201 static uint32_t InterlockedDecrement(volatile uint32_t *);
202 static void ExInterlockedAddLargeStatistic(uint64_t *, uint32_t);
203 static void *MmAllocateContiguousMemory(uint32_t, uint64_t);
204 static void *MmAllocateContiguousMemorySpecifyCache(uint32_t,
205 uint64_t, uint64_t, uint64_t, enum nt_caching_type);
206 static void MmFreeContiguousMemory(void *);
207 static void MmFreeContiguousMemorySpecifyCache(void *, uint32_t,
208 enum nt_caching_type);
209 static uint32_t MmSizeOfMdl(void *, size_t);
210 static void *MmMapLockedPages(mdl *, uint8_t);
211 static void *MmMapLockedPagesSpecifyCache(mdl *,
212 uint8_t, uint32_t, void *, uint32_t, uint32_t);
213 static void MmUnmapLockedPages(void *, mdl *);
214 static device_t ntoskrnl_finddev(device_t, uint64_t, struct resource **);
215 static void RtlZeroMemory(void *, size_t);
216 static void RtlSecureZeroMemory(void *, size_t);
217 static void RtlFillMemory(void *, size_t, uint8_t);
218 static void RtlMoveMemory(void *, const void *, size_t);
219 static ndis_status RtlCharToInteger(const char *, uint32_t, uint32_t *);
220 static void RtlCopyMemory(void *, const void *, size_t);
221 static size_t RtlCompareMemory(const void *, const void *, size_t);
222 static ndis_status RtlUnicodeStringToInteger(unicode_string *,
223 uint32_t, uint32_t *);
224 static int atoi (const char *);
225 static long atol (const char *);
226 static int rand(void);
227 static void srand(unsigned int);
228 static void KeQuerySystemTime(uint64_t *);
229 static uint32_t KeTickCount(void);
230 static uint8_t IoIsWdmVersionAvailable(uint8_t, uint8_t);
231 static int32_t IoOpenDeviceRegistryKey(struct device_object *, uint32_t,
233 static void ntoskrnl_thrfunc(void *);
234 static ndis_status PsCreateSystemThread(ndis_handle *,
235 uint32_t, void *, ndis_handle, void *, void *, void *);
236 static ndis_status PsTerminateSystemThread(ndis_status);
237 static ndis_status IoGetDeviceObjectPointer(unicode_string *,
238 uint32_t, void *, device_object *);
239 static ndis_status IoGetDeviceProperty(device_object *, uint32_t,
240 uint32_t, void *, uint32_t *);
241 static void KeInitializeMutex(kmutant *, uint32_t);
242 static uint32_t KeReleaseMutex(kmutant *, uint8_t);
243 static uint32_t KeReadStateMutex(kmutant *);
244 static ndis_status ObReferenceObjectByHandle(ndis_handle,
245 uint32_t, void *, uint8_t, void **, void **);
246 static void ObfDereferenceObject(void *);
247 static uint32_t ZwClose(ndis_handle);
248 static uint32_t WmiQueryTraceInformation(uint32_t, void *, uint32_t,
250 static uint32_t WmiTraceMessage(uint64_t, uint32_t, void *, uint16_t, ...);
251 static uint32_t IoWMIRegistrationControl(device_object *, uint32_t);
252 static void *ntoskrnl_memset(void *, int, size_t);
253 static void *ntoskrnl_memmove(void *, void *, size_t);
254 static void *ntoskrnl_memchr(void *, unsigned char, size_t);
255 static char *ntoskrnl_strstr(char *, char *);
256 static char *ntoskrnl_strncat(char *, char *, size_t);
257 static int ntoskrnl_toupper(int);
258 static int ntoskrnl_tolower(int);
259 static funcptr ntoskrnl_findwrap(funcptr);
260 static uint32_t DbgPrint(char *, ...);
261 static void DbgBreakPoint(void);
262 static void KeBugCheckEx(uint32_t, u_long, u_long, u_long, u_long);
263 static int32_t KeDelayExecutionThread(uint8_t, uint8_t, int64_t *);
264 static int32_t KeSetPriorityThread(struct thread *, int32_t);
265 static void dummy(void);
267 static struct lock ntoskrnl_dispatchlock;
268 static struct mtx ntoskrnl_interlock;
269 static kspin_lock ntoskrnl_cancellock;
270 static int ntoskrnl_kth = 0;
271 static struct nt_objref_head ntoskrnl_reflist;
272 static struct objcache *mdl_cache;
273 static struct objcache *iw_cache;
274 static struct kdpc_queue *kq_queues;
275 static struct kdpc_queue *wq_queues;
276 static int wq_idx = 0;
278 static struct objcache_malloc_args mdl_alloc_args = {
279 MDL_ZONE_SIZE, M_DEVBUF
281 static struct objcache_malloc_args iw_alloc_args = {
282 sizeof(io_workitem), M_DEVBUF
286 ntoskrnl_libinit(void)
288 image_patch_table *patch;
295 lockinit(&ntoskrnl_dispatchlock, MTX_NDIS_LOCK, 0, LK_CANRECURSE);
296 mtx_init(&ntoskrnl_interlock);
297 KeInitializeSpinLock(&ntoskrnl_cancellock);
298 KeInitializeSpinLock(&ntoskrnl_intlock);
299 TAILQ_INIT(&ntoskrnl_reflist);
301 InitializeListHead(&ntoskrnl_calllist);
302 InitializeListHead(&ntoskrnl_intlist);
303 mtx_init(&ntoskrnl_calllock);
305 kq_queues = ExAllocatePoolWithTag(NonPagedPool,
306 #ifdef NTOSKRNL_MULTIPLE_DPCS
307 sizeof(kdpc_queue) * ncpus, 0);
309 sizeof(kdpc_queue), 0);
312 if (kq_queues == NULL)
315 wq_queues = ExAllocatePoolWithTag(NonPagedPool,
316 sizeof(kdpc_queue) * WORKITEM_THREADS, 0);
318 if (wq_queues == NULL)
321 #ifdef NTOSKRNL_MULTIPLE_DPCS
322 bzero((char *)kq_queues, sizeof(kdpc_queue) * ncpus);
324 bzero((char *)kq_queues, sizeof(kdpc_queue));
326 bzero((char *)wq_queues, sizeof(kdpc_queue) * WORKITEM_THREADS);
329 * Launch the DPC threads.
332 #ifdef NTOSKRNL_MULTIPLE_DPCS
333 for (i = 0; i < ncpus; i++) {
335 for (i = 0; i < 1; i++) {
339 error = kthread_create_cpu(ntoskrnl_dpc_thread, kq, &p, i,
342 panic("failed to launch DPC thread");
346 * Launch the workitem threads.
349 for (i = 0; i < WORKITEM_THREADS; i++) {
351 error = kthread_create(ntoskrnl_workitem_thread, kq, &p,
352 "Win Workitem %d", i);
354 panic("failed to launch workitem thread");
357 patch = ntoskrnl_functbl;
358 while (patch->ipt_func != NULL) {
359 windrv_wrap((funcptr)patch->ipt_func,
360 (funcptr *)&patch->ipt_wrap,
361 patch->ipt_argcnt, patch->ipt_ftype);
365 for (i = 0; i < NTOSKRNL_TIMEOUTS; i++) {
366 e = ExAllocatePoolWithTag(NonPagedPool,
367 sizeof(callout_entry), 0);
369 panic("failed to allocate timeouts");
370 mtx_spinlock(&ntoskrnl_calllock);
371 InsertHeadList((&ntoskrnl_calllist), (&e->ce_list));
372 mtx_spinunlock(&ntoskrnl_calllock);
376 * MDLs are supposed to be variable size (they describe
377 * buffers containing some number of pages, but we don't
378 * know ahead of time how many pages that will be). But
379 * always allocating them off the heap is very slow. As
380 * a compromise, we create an MDL UMA zone big enough to
381 * handle any buffer requiring up to 16 pages, and we
382 * use those for any MDLs for buffers of 16 pages or less
383 * in size. For buffers larger than that (which we assume
384 * will be few and far between, we allocate the MDLs off
387 * CHANGED TO USING objcache(9) IN DRAGONFLY
390 mdl_cache = objcache_create("Windows MDL", 0, 0,
391 NULL, NULL, NULL, objcache_malloc_alloc, objcache_malloc_free,
394 iw_cache = objcache_create("Windows WorkItem", 0, 0,
395 NULL, NULL, NULL, objcache_malloc_alloc, objcache_malloc_free,
402 ntoskrnl_libfini(void)
404 image_patch_table *patch;
408 patch = ntoskrnl_functbl;
409 while (patch->ipt_func != NULL) {
410 windrv_unwrap(patch->ipt_wrap);
414 /* Stop the workitem queues. */
415 ntoskrnl_destroy_workitem_threads();
416 /* Stop the DPC queues. */
417 ntoskrnl_destroy_dpc_threads();
419 ExFreePool(kq_queues);
420 ExFreePool(wq_queues);
422 objcache_destroy(mdl_cache);
423 objcache_destroy(iw_cache);
425 mtx_spinlock(&ntoskrnl_calllock);
426 while(!IsListEmpty(&ntoskrnl_calllist)) {
427 l = RemoveHeadList(&ntoskrnl_calllist);
428 e = CONTAINING_RECORD(l, callout_entry, ce_list);
429 mtx_spinunlock(&ntoskrnl_calllock);
431 mtx_spinlock(&ntoskrnl_calllock);
433 mtx_spinunlock(&ntoskrnl_calllock);
435 lockuninit(&ntoskrnl_dispatchlock);
436 mtx_uninit(&ntoskrnl_interlock);
437 mtx_uninit(&ntoskrnl_calllock);
443 * We need to be able to reference this externally from the wrapper;
444 * GCC only generates a local implementation of memset.
447 ntoskrnl_memset(void *buf, int ch, size_t size)
449 return (memset(buf, ch, size));
453 ntoskrnl_memmove(void *dst, void *src, size_t size)
455 bcopy(src, dst, size);
460 ntoskrnl_memchr(void *buf, unsigned char ch, size_t len)
463 unsigned char *p = buf;
468 } while (--len != 0);
474 ntoskrnl_strstr(char *s, char *find)
479 if ((c = *find++) != 0) {
483 if ((sc = *s++) == 0)
486 } while (strncmp(s, find, len) != 0);
492 /* Taken from libc */
494 ntoskrnl_strncat(char *dst, char *src, size_t n)
503 if ((*d = *s++) == 0)
513 ntoskrnl_toupper(int c)
519 ntoskrnl_tolower(int c)
525 RtlEqualUnicodeString(unicode_string *str1, unicode_string *str2,
526 uint8_t caseinsensitive)
530 if (str1->us_len != str2->us_len)
533 for (i = 0; i < str1->us_len; i++) {
534 if (caseinsensitive == TRUE) {
535 if (toupper((char)(str1->us_buf[i] & 0xFF)) !=
536 toupper((char)(str2->us_buf[i] & 0xFF)))
539 if (str1->us_buf[i] != str2->us_buf[i])
548 RtlCopyString(ansi_string *dst, const ansi_string *src)
550 if (src != NULL && src->as_buf != NULL && dst->as_buf != NULL) {
551 dst->as_len = min(src->as_len, dst->as_maxlen);
552 memcpy(dst->as_buf, src->as_buf, dst->as_len);
553 if (dst->as_len < dst->as_maxlen)
554 dst->as_buf[dst->as_len] = 0;
560 RtlCopyUnicodeString(unicode_string *dest, unicode_string *src)
563 if (dest->us_maxlen >= src->us_len)
564 dest->us_len = src->us_len;
566 dest->us_len = dest->us_maxlen;
567 memcpy(dest->us_buf, src->us_buf, dest->us_len);
571 ntoskrnl_ascii_to_unicode(char *ascii, uint16_t *unicode, int len)
577 for (i = 0; i < len; i++) {
578 *ustr = (uint16_t)ascii[i];
584 ntoskrnl_unicode_to_ascii(uint16_t *unicode, char *ascii, int len)
590 for (i = 0; i < len / 2; i++) {
591 *astr = (uint8_t)unicode[i];
597 RtlUnicodeStringToAnsiString(ansi_string *dest, unicode_string *src, uint8_t allocate)
599 if (dest == NULL || src == NULL)
600 return (STATUS_INVALID_PARAMETER);
602 dest->as_len = src->us_len / 2;
603 if (dest->as_maxlen < dest->as_len)
604 dest->as_len = dest->as_maxlen;
606 if (allocate == TRUE) {
607 dest->as_buf = ExAllocatePoolWithTag(NonPagedPool,
608 (src->us_len / 2) + 1, 0);
609 if (dest->as_buf == NULL)
610 return (STATUS_INSUFFICIENT_RESOURCES);
611 dest->as_len = dest->as_maxlen = src->us_len / 2;
613 dest->as_len = src->us_len / 2; /* XXX */
614 if (dest->as_maxlen < dest->as_len)
615 dest->as_len = dest->as_maxlen;
618 ntoskrnl_unicode_to_ascii(src->us_buf, dest->as_buf,
621 return (STATUS_SUCCESS);
625 RtlAnsiStringToUnicodeString(unicode_string *dest, ansi_string *src,
628 if (dest == NULL || src == NULL)
629 return (STATUS_INVALID_PARAMETER);
631 if (allocate == TRUE) {
632 dest->us_buf = ExAllocatePoolWithTag(NonPagedPool,
634 if (dest->us_buf == NULL)
635 return (STATUS_INSUFFICIENT_RESOURCES);
636 dest->us_len = dest->us_maxlen = strlen(src->as_buf) * 2;
638 dest->us_len = src->as_len * 2; /* XXX */
639 if (dest->us_maxlen < dest->us_len)
640 dest->us_len = dest->us_maxlen;
643 ntoskrnl_ascii_to_unicode(src->as_buf, dest->us_buf,
646 return (STATUS_SUCCESS);
650 ExAllocatePoolWithTag(uint32_t pooltype, size_t len, uint32_t tag)
654 buf = kmalloc(len, M_DEVBUF, M_NOWAIT|M_ZERO);
662 ExFreePoolWithTag(void *buf, uint32_t tag)
668 ExFreePool(void *buf)
670 kfree(buf, M_DEVBUF);
674 IoAllocateDriverObjectExtension(driver_object *drv, void *clid,
675 uint32_t extlen, void **ext)
677 custom_extension *ce;
679 ce = ExAllocatePoolWithTag(NonPagedPool, sizeof(custom_extension)
683 return (STATUS_INSUFFICIENT_RESOURCES);
686 InsertTailList((&drv->dro_driverext->dre_usrext), (&ce->ce_list));
688 *ext = (void *)(ce + 1);
690 return (STATUS_SUCCESS);
694 IoGetDriverObjectExtension(driver_object *drv, void *clid)
697 custom_extension *ce;
700 * Sanity check. Our dummy bus drivers don't have
701 * any driver extentions.
704 if (drv->dro_driverext == NULL)
707 e = drv->dro_driverext->dre_usrext.nle_flink;
708 while (e != &drv->dro_driverext->dre_usrext) {
709 ce = (custom_extension *)e;
710 if (ce->ce_clid == clid)
711 return ((void *)(ce + 1));
720 IoCreateDevice(driver_object *drv, uint32_t devextlen, unicode_string *devname,
721 uint32_t devtype, uint32_t devchars, uint8_t exclusive,
722 device_object **newdev)
726 dev = ExAllocatePoolWithTag(NonPagedPool, sizeof(device_object), 0);
728 return (STATUS_INSUFFICIENT_RESOURCES);
730 dev->do_type = devtype;
731 dev->do_drvobj = drv;
732 dev->do_currirp = NULL;
736 dev->do_devext = ExAllocatePoolWithTag(NonPagedPool,
739 if (dev->do_devext == NULL) {
741 return (STATUS_INSUFFICIENT_RESOURCES);
744 bzero(dev->do_devext, devextlen);
746 dev->do_devext = NULL;
748 dev->do_size = sizeof(device_object) + devextlen;
750 dev->do_attacheddev = NULL;
751 dev->do_nextdev = NULL;
752 dev->do_devtype = devtype;
753 dev->do_stacksize = 1;
754 dev->do_alignreq = 1;
755 dev->do_characteristics = devchars;
756 dev->do_iotimer = NULL;
757 KeInitializeEvent(&dev->do_devlock, EVENT_TYPE_SYNC, TRUE);
760 * Vpd is used for disk/tape devices,
761 * but we don't support those. (Yet.)
765 dev->do_devobj_ext = ExAllocatePoolWithTag(NonPagedPool,
766 sizeof(devobj_extension), 0);
768 if (dev->do_devobj_ext == NULL) {
769 if (dev->do_devext != NULL)
770 ExFreePool(dev->do_devext);
772 return (STATUS_INSUFFICIENT_RESOURCES);
775 dev->do_devobj_ext->dve_type = 0;
776 dev->do_devobj_ext->dve_size = sizeof(devobj_extension);
777 dev->do_devobj_ext->dve_devobj = dev;
780 * Attach this device to the driver object's list
781 * of devices. Note: this is not the same as attaching
782 * the device to the device stack. The driver's AddDevice
783 * routine must explicitly call IoAddDeviceToDeviceStack()
787 if (drv->dro_devobj == NULL) {
788 drv->dro_devobj = dev;
789 dev->do_nextdev = NULL;
791 dev->do_nextdev = drv->dro_devobj;
792 drv->dro_devobj = dev;
797 return (STATUS_SUCCESS);
801 IoDeleteDevice(device_object *dev)
808 if (dev->do_devobj_ext != NULL)
809 ExFreePool(dev->do_devobj_ext);
811 if (dev->do_devext != NULL)
812 ExFreePool(dev->do_devext);
814 /* Unlink the device from the driver's device list. */
816 prev = dev->do_drvobj->dro_devobj;
818 dev->do_drvobj->dro_devobj = dev->do_nextdev;
820 while (prev->do_nextdev != dev)
821 prev = prev->do_nextdev;
822 prev->do_nextdev = dev->do_nextdev;
829 IoGetAttachedDevice(device_object *dev)
838 while (d->do_attacheddev != NULL)
839 d = d->do_attacheddev;
845 IoBuildSynchronousFsdRequest(uint32_t func, device_object *dobj, void *buf,
846 uint32_t len, uint64_t *off, nt_kevent *event, io_status_block *status)
850 ip = IoBuildAsynchronousFsdRequest(func, dobj, buf, len, off, status);
853 ip->irp_usrevent = event;
859 IoBuildAsynchronousFsdRequest(uint32_t func, device_object *dobj, void *buf,
860 uint32_t len, uint64_t *off, io_status_block *status)
863 io_stack_location *sl;
865 ip = IoAllocateIrp(dobj->do_stacksize, TRUE);
869 ip->irp_usriostat = status;
870 ip->irp_tail.irp_overlay.irp_thread = NULL;
872 sl = IoGetNextIrpStackLocation(ip);
873 sl->isl_major = func;
877 sl->isl_devobj = dobj;
878 sl->isl_fileobj = NULL;
879 sl->isl_completionfunc = NULL;
881 ip->irp_userbuf = buf;
883 if (dobj->do_flags & DO_BUFFERED_IO) {
884 ip->irp_assoc.irp_sysbuf =
885 ExAllocatePoolWithTag(NonPagedPool, len, 0);
886 if (ip->irp_assoc.irp_sysbuf == NULL) {
890 bcopy(buf, ip->irp_assoc.irp_sysbuf, len);
893 if (dobj->do_flags & DO_DIRECT_IO) {
894 ip->irp_mdl = IoAllocateMdl(buf, len, FALSE, FALSE, ip);
895 if (ip->irp_mdl == NULL) {
896 if (ip->irp_assoc.irp_sysbuf != NULL)
897 ExFreePool(ip->irp_assoc.irp_sysbuf);
901 ip->irp_userbuf = NULL;
902 ip->irp_assoc.irp_sysbuf = NULL;
905 if (func == IRP_MJ_READ) {
906 sl->isl_parameters.isl_read.isl_len = len;
908 sl->isl_parameters.isl_read.isl_byteoff = *off;
910 sl->isl_parameters.isl_read.isl_byteoff = 0;
913 if (func == IRP_MJ_WRITE) {
914 sl->isl_parameters.isl_write.isl_len = len;
916 sl->isl_parameters.isl_write.isl_byteoff = *off;
918 sl->isl_parameters.isl_write.isl_byteoff = 0;
925 IoBuildDeviceIoControlRequest(uint32_t iocode, device_object *dobj, void *ibuf,
926 uint32_t ilen, void *obuf, uint32_t olen, uint8_t isinternal,
927 nt_kevent *event, io_status_block *status)
930 io_stack_location *sl;
933 ip = IoAllocateIrp(dobj->do_stacksize, TRUE);
936 ip->irp_usrevent = event;
937 ip->irp_usriostat = status;
938 ip->irp_tail.irp_overlay.irp_thread = NULL;
940 sl = IoGetNextIrpStackLocation(ip);
941 sl->isl_major = isinternal == TRUE ?
942 IRP_MJ_INTERNAL_DEVICE_CONTROL : IRP_MJ_DEVICE_CONTROL;
946 sl->isl_devobj = dobj;
947 sl->isl_fileobj = NULL;
948 sl->isl_completionfunc = NULL;
949 sl->isl_parameters.isl_ioctl.isl_iocode = iocode;
950 sl->isl_parameters.isl_ioctl.isl_ibuflen = ilen;
951 sl->isl_parameters.isl_ioctl.isl_obuflen = olen;
953 switch(IO_METHOD(iocode)) {
954 case METHOD_BUFFERED:
960 ip->irp_assoc.irp_sysbuf =
961 ExAllocatePoolWithTag(NonPagedPool, buflen, 0);
962 if (ip->irp_assoc.irp_sysbuf == NULL) {
967 if (ilen && ibuf != NULL) {
968 bcopy(ibuf, ip->irp_assoc.irp_sysbuf, ilen);
969 bzero((char *)ip->irp_assoc.irp_sysbuf + ilen,
972 bzero(ip->irp_assoc.irp_sysbuf, ilen);
973 ip->irp_userbuf = obuf;
975 case METHOD_IN_DIRECT:
976 case METHOD_OUT_DIRECT:
977 if (ilen && ibuf != NULL) {
978 ip->irp_assoc.irp_sysbuf =
979 ExAllocatePoolWithTag(NonPagedPool, ilen, 0);
980 if (ip->irp_assoc.irp_sysbuf == NULL) {
984 bcopy(ibuf, ip->irp_assoc.irp_sysbuf, ilen);
986 if (olen && obuf != NULL) {
987 ip->irp_mdl = IoAllocateMdl(obuf, olen,
990 * Normally we would MmProbeAndLockPages()
991 * here, but we don't have to in our
997 ip->irp_userbuf = obuf;
998 sl->isl_parameters.isl_ioctl.isl_type3ibuf = ibuf;
1005 * Ideally, we should associate this IRP with the calling
1013 IoAllocateIrp(uint8_t stsize, uint8_t chargequota)
1017 i = ExAllocatePoolWithTag(NonPagedPool, IoSizeOfIrp(stsize), 0);
1021 IoInitializeIrp(i, IoSizeOfIrp(stsize), stsize);
1027 IoMakeAssociatedIrp(irp *ip, uint8_t stsize)
1031 associrp = IoAllocateIrp(stsize, FALSE);
1032 if (associrp == NULL)
1035 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
1036 associrp->irp_flags |= IRP_ASSOCIATED_IRP;
1037 associrp->irp_tail.irp_overlay.irp_thread =
1038 ip->irp_tail.irp_overlay.irp_thread;
1039 associrp->irp_assoc.irp_master = ip;
1040 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1052 IoInitializeIrp(irp *io, uint16_t psize, uint8_t ssize)
1054 bzero((char *)io, IoSizeOfIrp(ssize));
1055 io->irp_size = psize;
1056 io->irp_stackcnt = ssize;
1057 io->irp_currentstackloc = ssize;
1058 InitializeListHead(&io->irp_thlist);
1059 io->irp_tail.irp_overlay.irp_csl =
1060 (io_stack_location *)(io + 1) + ssize;
1064 IoReuseIrp(irp *ip, uint32_t status)
1068 allocflags = ip->irp_allocflags;
1069 IoInitializeIrp(ip, ip->irp_size, ip->irp_stackcnt);
1070 ip->irp_iostat.isb_status = status;
1071 ip->irp_allocflags = allocflags;
1075 IoAcquireCancelSpinLock(uint8_t *irql)
1077 KeAcquireSpinLock(&ntoskrnl_cancellock, irql);
1081 IoReleaseCancelSpinLock(uint8_t irql)
1083 KeReleaseSpinLock(&ntoskrnl_cancellock, irql);
1087 IoCancelIrp(irp *ip)
1092 IoAcquireCancelSpinLock(&cancelirql);
1093 cfunc = IoSetCancelRoutine(ip, NULL);
1094 ip->irp_cancel = TRUE;
1095 if (cfunc == NULL) {
1096 IoReleaseCancelSpinLock(cancelirql);
1099 ip->irp_cancelirql = cancelirql;
1100 MSCALL2(cfunc, IoGetCurrentIrpStackLocation(ip)->isl_devobj, ip);
1101 return (uint8_t)IoSetCancelValue(ip, TRUE);
1105 IofCallDriver(device_object *dobj, irp *ip)
1107 driver_object *drvobj;
1108 io_stack_location *sl;
1110 driver_dispatch disp;
1112 drvobj = dobj->do_drvobj;
1114 if (ip->irp_currentstackloc <= 0)
1115 panic("IoCallDriver(): out of stack locations");
1117 IoSetNextIrpStackLocation(ip);
1118 sl = IoGetCurrentIrpStackLocation(ip);
1120 sl->isl_devobj = dobj;
1122 disp = drvobj->dro_dispatch[sl->isl_major];
1123 status = MSCALL2(disp, dobj, ip);
1129 IofCompleteRequest(irp *ip, uint8_t prioboost)
1132 device_object *dobj;
1133 io_stack_location *sl;
1136 KASSERT(ip->irp_iostat.isb_status != STATUS_PENDING,
1137 ("incorrect IRP(%p) status (STATUS_PENDING)", ip));
1139 sl = IoGetCurrentIrpStackLocation(ip);
1140 IoSkipCurrentIrpStackLocation(ip);
1143 if (sl->isl_ctl & SL_PENDING_RETURNED)
1144 ip->irp_pendingreturned = TRUE;
1146 if (ip->irp_currentstackloc != (ip->irp_stackcnt + 1))
1147 dobj = IoGetCurrentIrpStackLocation(ip)->isl_devobj;
1151 if (sl->isl_completionfunc != NULL &&
1152 ((ip->irp_iostat.isb_status == STATUS_SUCCESS &&
1153 sl->isl_ctl & SL_INVOKE_ON_SUCCESS) ||
1154 (ip->irp_iostat.isb_status != STATUS_SUCCESS &&
1155 sl->isl_ctl & SL_INVOKE_ON_ERROR) ||
1156 (ip->irp_cancel == TRUE &&
1157 sl->isl_ctl & SL_INVOKE_ON_CANCEL))) {
1158 cf = sl->isl_completionfunc;
1159 status = MSCALL3(cf, dobj, ip, sl->isl_completionctx);
1160 if (status == STATUS_MORE_PROCESSING_REQUIRED)
1163 if ((ip->irp_currentstackloc <= ip->irp_stackcnt) &&
1164 (ip->irp_pendingreturned == TRUE))
1165 IoMarkIrpPending(ip);
1168 /* move to the next. */
1169 IoSkipCurrentIrpStackLocation(ip);
1171 } while (ip->irp_currentstackloc <= (ip->irp_stackcnt + 1));
1173 if (ip->irp_usriostat != NULL)
1174 *ip->irp_usriostat = ip->irp_iostat;
1175 if (ip->irp_usrevent != NULL)
1176 KeSetEvent(ip->irp_usrevent, prioboost, FALSE);
1178 /* Handle any associated IRPs. */
1180 if (ip->irp_flags & IRP_ASSOCIATED_IRP) {
1181 uint32_t masterirpcnt;
1185 masterirp = ip->irp_assoc.irp_master;
1187 InterlockedDecrement(&masterirp->irp_assoc.irp_irpcnt);
1189 while ((m = ip->irp_mdl) != NULL) {
1190 ip->irp_mdl = m->mdl_next;
1194 if (masterirpcnt == 0)
1195 IoCompleteRequest(masterirp, IO_NO_INCREMENT);
1199 /* With any luck, these conditions will never arise. */
1201 if (ip->irp_flags & IRP_PAGING_IO) {
1202 if (ip->irp_mdl != NULL)
1203 IoFreeMdl(ip->irp_mdl);
1209 ntoskrnl_intr(void *arg)
1216 KeAcquireSpinLock(&ntoskrnl_intlock, &irql);
1217 l = ntoskrnl_intlist.nle_flink;
1218 while (l != &ntoskrnl_intlist) {
1219 iobj = CONTAINING_RECORD(l, kinterrupt, ki_list);
1220 claimed = MSCALL2(iobj->ki_svcfunc, iobj, iobj->ki_svcctx);
1221 if (claimed == TRUE)
1225 KeReleaseSpinLock(&ntoskrnl_intlock, irql);
1229 KeAcquireInterruptSpinLock(kinterrupt *iobj)
1232 KeAcquireSpinLock(&ntoskrnl_intlock, &irql);
1237 KeReleaseInterruptSpinLock(kinterrupt *iobj, uint8_t irql)
1239 KeReleaseSpinLock(&ntoskrnl_intlock, irql);
1243 KeSynchronizeExecution(kinterrupt *iobj, void *syncfunc, void *syncctx)
1247 KeAcquireSpinLock(&ntoskrnl_intlock, &irql);
1248 MSCALL1(syncfunc, syncctx);
1249 KeReleaseSpinLock(&ntoskrnl_intlock, irql);
1255 * IoConnectInterrupt() is passed only the interrupt vector and
1256 * irql that a device wants to use, but no device-specific tag
1257 * of any kind. This conflicts rather badly with FreeBSD's
1258 * bus_setup_intr(), which needs the device_t for the device
1259 * requesting interrupt delivery. In order to bypass this
1260 * inconsistency, we implement a second level of interrupt
1261 * dispatching on top of bus_setup_intr(). All devices use
1262 * ntoskrnl_intr() as their ISR, and any device requesting
1263 * interrupts will be registered with ntoskrnl_intr()'s interrupt
1264 * dispatch list. When an interrupt arrives, we walk the list
1265 * and invoke all the registered ISRs. This effectively makes all
1266 * interrupts shared, but it's the only way to duplicate the
1267 * semantics of IoConnectInterrupt() and IoDisconnectInterrupt() properly.
1271 IoConnectInterrupt(kinterrupt **iobj, void *svcfunc, void *svcctx,
1272 kspin_lock *lock, uint32_t vector, uint8_t irql, uint8_t syncirql,
1273 uint8_t imode, uint8_t shared, uint32_t affinity, uint8_t savefloat)
1277 *iobj = ExAllocatePoolWithTag(NonPagedPool, sizeof(kinterrupt), 0);
1279 return (STATUS_INSUFFICIENT_RESOURCES);
1281 (*iobj)->ki_svcfunc = svcfunc;
1282 (*iobj)->ki_svcctx = svcctx;
1285 KeInitializeSpinLock(&(*iobj)->ki_lock_priv);
1286 (*iobj)->ki_lock = &(*iobj)->ki_lock_priv;
1288 (*iobj)->ki_lock = lock;
1290 KeAcquireSpinLock(&ntoskrnl_intlock, &curirql);
1291 InsertHeadList((&ntoskrnl_intlist), (&(*iobj)->ki_list));
1292 KeReleaseSpinLock(&ntoskrnl_intlock, curirql);
1294 return (STATUS_SUCCESS);
1298 IoDisconnectInterrupt(kinterrupt *iobj)
1305 KeAcquireSpinLock(&ntoskrnl_intlock, &irql);
1306 RemoveEntryList((&iobj->ki_list));
1307 KeReleaseSpinLock(&ntoskrnl_intlock, irql);
1313 IoAttachDeviceToDeviceStack(device_object *src, device_object *dst)
1315 device_object *attached;
1317 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
1318 attached = IoGetAttachedDevice(dst);
1319 attached->do_attacheddev = src;
1320 src->do_attacheddev = NULL;
1321 src->do_stacksize = attached->do_stacksize + 1;
1322 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1328 IoDetachDevice(device_object *topdev)
1330 device_object *tail;
1332 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
1334 /* First, break the chain. */
1335 tail = topdev->do_attacheddev;
1337 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1340 topdev->do_attacheddev = tail->do_attacheddev;
1341 topdev->do_refcnt--;
1343 /* Now reduce the stacksize count for the takm_il objects. */
1345 tail = topdev->do_attacheddev;
1346 while (tail != NULL) {
1347 tail->do_stacksize--;
1348 tail = tail->do_attacheddev;
1351 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1355 * For the most part, an object is considered signalled if
1356 * dh_sigstate == TRUE. The exception is for mutant objects
1357 * (mutexes), where the logic works like this:
1359 * - If the thread already owns the object and sigstate is
1360 * less than or equal to 0, then the object is considered
1361 * signalled (recursive acquisition).
1362 * - If dh_sigstate == 1, the object is also considered
1367 ntoskrnl_is_signalled(nt_dispatch_header *obj, struct thread *td)
1371 if (obj->dh_type == DISP_TYPE_MUTANT) {
1372 km = (kmutant *)obj;
1373 if ((obj->dh_sigstate <= 0 && km->km_ownerthread == td) ||
1374 obj->dh_sigstate == 1)
1379 if (obj->dh_sigstate > 0)
1385 ntoskrnl_satisfy_wait(nt_dispatch_header *obj, struct thread *td)
1389 switch (obj->dh_type) {
1390 case DISP_TYPE_MUTANT:
1391 km = (struct kmutant *)obj;
1394 * If sigstate reaches 0, the mutex is now
1395 * non-signalled (the new thread owns it).
1397 if (obj->dh_sigstate == 0) {
1398 km->km_ownerthread = td;
1399 if (km->km_abandoned == TRUE)
1400 km->km_abandoned = FALSE;
1403 /* Synchronization objects get reset to unsignalled. */
1404 case DISP_TYPE_SYNCHRONIZATION_EVENT:
1405 case DISP_TYPE_SYNCHRONIZATION_TIMER:
1406 obj->dh_sigstate = 0;
1408 case DISP_TYPE_SEMAPHORE:
1417 ntoskrnl_satisfy_multiple_waits(wait_block *wb)
1423 td = wb->wb_kthread;
1426 ntoskrnl_satisfy_wait(wb->wb_object, td);
1427 cur->wb_awakened = TRUE;
1429 } while (cur != wb);
1432 /* Always called with dispatcher lock held. */
1434 ntoskrnl_waittest(nt_dispatch_header *obj, uint32_t increment)
1436 wait_block *w, *next;
1443 * Once an object has been signalled, we walk its list of
1444 * wait blocks. If a wait block can be awakened, then satisfy
1445 * waits as necessary and wake the thread.
1447 * The rules work like this:
1449 * If a wait block is marked as WAITTYPE_ANY, then
1450 * we can satisfy the wait conditions on the current
1451 * object and wake the thread right away. Satisfying
1452 * the wait also has the effect of breaking us out
1453 * of the search loop.
1455 * If the object is marked as WAITTYLE_ALL, then the
1456 * wait block will be part of a circularly linked
1457 * list of wait blocks belonging to a waiting thread
1458 * that's sleeping in KeWaitForMultipleObjects(). In
1459 * order to wake the thread, all the objects in the
1460 * wait list must be in the signalled state. If they
1461 * are, we then satisfy all of them and wake the
1466 e = obj->dh_waitlisthead.nle_flink;
1468 while (e != &obj->dh_waitlisthead && obj->dh_sigstate > 0) {
1469 w = CONTAINING_RECORD(e, wait_block, wb_waitlist);
1473 if (w->wb_waittype == WAITTYPE_ANY) {
1475 * Thread can be awakened if
1476 * any wait is satisfied.
1478 ntoskrnl_satisfy_wait(obj, td);
1480 w->wb_awakened = TRUE;
1483 * Thread can only be woken up
1484 * if all waits are satisfied.
1485 * If the thread is waiting on multiple
1486 * objects, they should all be linked
1487 * through the wb_next pointers in the
1493 if (ntoskrnl_is_signalled(obj, td) == FALSE) {
1497 next = next->wb_next;
1499 ntoskrnl_satisfy_multiple_waits(w);
1502 if (satisfied == TRUE)
1503 cv_broadcastpri(&we->we_cv,
1504 (w->wb_oldpri - (increment * 4)) > PRI_MIN_KERN ?
1505 w->wb_oldpri - (increment * 4) : PRI_MIN_KERN);
1512 * Return the number of 100 nanosecond intervals since
1513 * January 1, 1601. (?!?!)
1516 ntoskrnl_time(uint64_t *tval)
1521 *tval = (uint64_t)ts.tv_nsec / 100 + (uint64_t)ts.tv_sec * 10000000 +
1522 11644473600 * 10000000; /* 100ns ticks from 1601 to 1970 */
1526 KeQuerySystemTime(uint64_t *current_time)
1528 ntoskrnl_time(current_time);
1535 getmicrouptime(&tv);
1536 return tvtohz_high(&tv);
1541 * KeWaitForSingleObject() is a tricky beast, because it can be used
1542 * with several different object types: semaphores, timers, events,
1543 * mutexes and threads. Semaphores don't appear very often, but the
1544 * other object types are quite common. KeWaitForSingleObject() is
1545 * what's normally used to acquire a mutex, and it can be used to
1546 * wait for a thread termination.
1548 * The Windows NDIS API is implemented in terms of Windows kernel
1549 * primitives, and some of the object manipulation is duplicated in
1550 * NDIS. For example, NDIS has timers and events, which are actually
1551 * Windows kevents and ktimers. Now, you're supposed to only use the
1552 * NDIS variants of these objects within the confines of the NDIS API,
1553 * but there are some naughty developers out there who will use
1554 * KeWaitForSingleObject() on NDIS timer and event objects, so we
1555 * have to support that as well. Conseqently, our NDIS timer and event
1556 * code has to be closely tied into our ntoskrnl timer and event code,
1557 * just as it is in Windows.
1559 * KeWaitForSingleObject() may do different things for different kinds
1562 * - For events, we check if the event has been signalled. If the
1563 * event is already in the signalled state, we just return immediately,
1564 * otherwise we wait for it to be set to the signalled state by someone
1565 * else calling KeSetEvent(). Events can be either synchronization or
1566 * notification events.
1568 * - For timers, if the timer has already fired and the timer is in
1569 * the signalled state, we just return, otherwise we wait on the
1570 * timer. Unlike an event, timers get signalled automatically when
1571 * they expire rather than someone having to trip them manually.
1572 * Timers initialized with KeInitializeTimer() are always notification
1573 * events: KeInitializeTimerEx() lets you initialize a timer as
1574 * either a notification or synchronization event.
1576 * - For mutexes, we try to acquire the mutex and if we can't, we wait
1577 * on the mutex until it's available and then grab it. When a mutex is
1578 * released, it enters the signalled state, which wakes up one of the
1579 * threads waiting to acquire it. Mutexes are always synchronization
1582 * - For threads, the only thing we do is wait until the thread object
1583 * enters a signalled state, which occurs when the thread terminates.
1584 * Threads are always notification events.
1586 * A notification event wakes up all threads waiting on an object. A
1587 * synchronization event wakes up just one. Also, a synchronization event
1588 * is auto-clearing, which means we automatically set the event back to
1589 * the non-signalled state once the wakeup is done.
1593 KeWaitForSingleObject(void *arg, uint32_t reason, uint32_t mode,
1594 uint8_t alertable, int64_t *duetime)
1597 struct thread *td = curthread;
1602 nt_dispatch_header *obj;
1607 return (STATUS_INVALID_PARAMETER);
1609 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
1611 cv_init(&we.we_cv, "KeWFS");
1615 * Check to see if this object is already signalled,
1616 * and just return without waiting if it is.
1618 if (ntoskrnl_is_signalled(obj, td) == TRUE) {
1619 /* Sanity check the signal state value. */
1620 if (obj->dh_sigstate != INT32_MIN) {
1621 ntoskrnl_satisfy_wait(obj, curthread);
1622 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1623 return (STATUS_SUCCESS);
1626 * There's a limit to how many times we can
1627 * recursively acquire a mutant. If we hit
1628 * the limit, something is very wrong.
1630 if (obj->dh_type == DISP_TYPE_MUTANT) {
1631 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1632 panic("mutant limit exceeded");
1637 bzero((char *)&w, sizeof(wait_block));
1640 w.wb_waittype = WAITTYPE_ANY;
1643 w.wb_awakened = FALSE;
1644 w.wb_oldpri = td->td_pri;
1646 InsertTailList((&obj->dh_waitlisthead), (&w.wb_waitlist));
1649 * The timeout value is specified in 100 nanosecond units
1650 * and can be a positive or negative number. If it's positive,
1651 * then the duetime is absolute, and we need to convert it
1652 * to an absolute offset relative to now in order to use it.
1653 * If it's negative, then the duetime is relative and we
1654 * just have to convert the units.
1657 if (duetime != NULL) {
1659 tv.tv_sec = - (*duetime) / 10000000;
1660 tv.tv_usec = (- (*duetime) / 10) -
1661 (tv.tv_sec * 1000000);
1663 ntoskrnl_time(&curtime);
1664 if (*duetime < curtime)
1665 tv.tv_sec = tv.tv_usec = 0;
1667 tv.tv_sec = ((*duetime) - curtime) / 10000000;
1668 tv.tv_usec = ((*duetime) - curtime) / 10 -
1669 (tv.tv_sec * 1000000);
1674 if (duetime == NULL)
1675 cv_wait(&we.we_cv, &ntoskrnl_dispatchlock);
1677 error = cv_timedwait(&we.we_cv,
1678 &ntoskrnl_dispatchlock, tvtohz_high(&tv));
1680 RemoveEntryList(&w.wb_waitlist);
1682 cv_destroy(&we.we_cv);
1684 /* We timed out. Leave the object alone and return status. */
1686 if (error == EWOULDBLOCK) {
1687 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1688 return (STATUS_TIMEOUT);
1691 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1693 return (STATUS_SUCCESS);
1695 return (KeWaitForMultipleObjects(1, &obj, WAITTYPE_ALL, reason,
1696 mode, alertable, duetime, &w));
1701 KeWaitForMultipleObjects(uint32_t cnt, nt_dispatch_header *obj[], uint32_t wtype,
1702 uint32_t reason, uint32_t mode, uint8_t alertable, int64_t *duetime,
1703 wait_block *wb_array)
1705 struct thread *td = curthread;
1706 wait_block *whead, *w;
1707 wait_block _wb_array[MAX_WAIT_OBJECTS];
1708 nt_dispatch_header *cur;
1710 int i, wcnt = 0, error = 0;
1712 struct timespec t1, t2;
1713 uint32_t status = STATUS_SUCCESS;
1716 if (cnt > MAX_WAIT_OBJECTS)
1717 return (STATUS_INVALID_PARAMETER);
1718 if (cnt > THREAD_WAIT_OBJECTS && wb_array == NULL)
1719 return (STATUS_INVALID_PARAMETER);
1721 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
1723 cv_init(&we.we_cv, "KeWFM");
1726 if (wb_array == NULL)
1731 bzero((char *)whead, sizeof(wait_block) * cnt);
1733 /* First pass: see if we can satisfy any waits immediately. */
1738 for (i = 0; i < cnt; i++) {
1739 InsertTailList((&obj[i]->dh_waitlisthead),
1742 w->wb_object = obj[i];
1743 w->wb_waittype = wtype;
1745 w->wb_awakened = FALSE;
1746 w->wb_oldpri = td->td_pri;
1750 if (ntoskrnl_is_signalled(obj[i], td)) {
1752 * There's a limit to how many times
1753 * we can recursively acquire a mutant.
1754 * If we hit the limit, something
1757 if (obj[i]->dh_sigstate == INT32_MIN &&
1758 obj[i]->dh_type == DISP_TYPE_MUTANT) {
1759 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1760 panic("mutant limit exceeded");
1764 * If this is a WAITTYPE_ANY wait, then
1765 * satisfy the waited object and exit
1769 if (wtype == WAITTYPE_ANY) {
1770 ntoskrnl_satisfy_wait(obj[i], td);
1771 status = STATUS_WAIT_0 + i;
1776 w->wb_object = NULL;
1777 RemoveEntryList(&w->wb_waitlist);
1783 * If this is a WAITTYPE_ALL wait and all objects are
1784 * already signalled, satisfy the waits and exit now.
1787 if (wtype == WAITTYPE_ALL && wcnt == 0) {
1788 for (i = 0; i < cnt; i++)
1789 ntoskrnl_satisfy_wait(obj[i], td);
1790 status = STATUS_SUCCESS;
1795 * Create a circular waitblock list. The waitcount
1796 * must always be non-zero when we get here.
1799 (w - 1)->wb_next = whead;
1801 /* Wait on any objects that aren't yet signalled. */
1803 /* Calculate timeout, if any. */
1805 if (duetime != NULL) {
1807 tv.tv_sec = - (*duetime) / 10000000;
1808 tv.tv_usec = (- (*duetime) / 10) -
1809 (tv.tv_sec * 1000000);
1811 ntoskrnl_time(&curtime);
1812 if (*duetime < curtime)
1813 tv.tv_sec = tv.tv_usec = 0;
1815 tv.tv_sec = ((*duetime) - curtime) / 10000000;
1816 tv.tv_usec = ((*duetime) - curtime) / 10 -
1817 (tv.tv_sec * 1000000);
1825 if (duetime == NULL)
1826 cv_wait(&we.we_cv, &ntoskrnl_dispatchlock);
1828 error = cv_timedwait(&we.we_cv,
1829 &ntoskrnl_dispatchlock, tvtohz_high(&tv));
1831 /* Wait with timeout expired. */
1834 status = STATUS_TIMEOUT;
1840 /* See what's been signalled. */
1845 if (ntoskrnl_is_signalled(cur, td) == TRUE ||
1846 w->wb_awakened == TRUE) {
1847 /* Sanity check the signal state value. */
1848 if (cur->dh_sigstate == INT32_MIN &&
1849 cur->dh_type == DISP_TYPE_MUTANT) {
1850 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1851 panic("mutant limit exceeded");
1854 if (wtype == WAITTYPE_ANY) {
1855 status = w->wb_waitkey &
1861 } while (w != whead);
1864 * If all objects have been signalled, or if this
1865 * is a WAITTYPE_ANY wait and we were woke up by
1866 * someone, we can bail.
1870 status = STATUS_SUCCESS;
1875 * If this is WAITTYPE_ALL wait, and there's still
1876 * objects that haven't been signalled, deduct the
1877 * time that's elapsed so far from the timeout and
1878 * wait again (or continue waiting indefinitely if
1879 * there's no timeout).
1882 if (duetime != NULL) {
1883 tv.tv_sec -= (t2.tv_sec - t1.tv_sec);
1884 tv.tv_usec -= (t2.tv_nsec - t1.tv_nsec) / 1000;
1891 cv_destroy(&we.we_cv);
1893 for (i = 0; i < cnt; i++) {
1894 if (whead[i].wb_object != NULL)
1895 RemoveEntryList(&whead[i].wb_waitlist);
1898 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
1904 WRITE_REGISTER_USHORT(uint16_t *reg, uint16_t val)
1906 bus_space_write_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
1910 READ_REGISTER_USHORT(uint16_t *reg)
1912 return (bus_space_read_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
1916 WRITE_REGISTER_ULONG(uint32_t *reg, uint32_t val)
1918 bus_space_write_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
1922 READ_REGISTER_ULONG(uint32_t *reg)
1924 return (bus_space_read_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
1928 READ_REGISTER_UCHAR(uint8_t *reg)
1930 return (bus_space_read_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
1934 WRITE_REGISTER_UCHAR(uint8_t *reg, uint8_t val)
1936 bus_space_write_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
1940 _allmul(int64_t a, int64_t b)
1946 _alldiv(int64_t a, int64_t b)
1952 _allrem(int64_t a, int64_t b)
1958 _aullmul(uint64_t a, uint64_t b)
1964 _aulldiv(uint64_t a, uint64_t b)
1970 _aullrem(uint64_t a, uint64_t b)
1976 _allshl(int64_t a, uint8_t b)
1982 _aullshl(uint64_t a, uint8_t b)
1988 _allshr(int64_t a, uint8_t b)
1994 _aullshr(uint64_t a, uint8_t b)
1999 static slist_entry *
2000 ntoskrnl_pushsl(slist_header *head, slist_entry *entry)
2002 slist_entry *oldhead;
2004 oldhead = head->slh_list.slh_next;
2005 entry->sl_next = head->slh_list.slh_next;
2006 head->slh_list.slh_next = entry;
2007 head->slh_list.slh_depth++;
2008 head->slh_list.slh_seq++;
2014 InitializeSListHead(slist_header *head)
2016 memset(head, 0, sizeof(*head));
2019 static slist_entry *
2020 ntoskrnl_popsl(slist_header *head)
2024 first = head->slh_list.slh_next;
2025 if (first != NULL) {
2026 head->slh_list.slh_next = first->sl_next;
2027 head->slh_list.slh_depth--;
2028 head->slh_list.slh_seq++;
2035 * We need this to make lookaside lists work for amd64.
2036 * We pass a pointer to ExAllocatePoolWithTag() the lookaside
2037 * list structure. For amd64 to work right, this has to be a
2038 * pointer to the wrapped version of the routine, not the
2039 * original. Letting the Windows driver invoke the original
2040 * function directly will result in a convention calling
2041 * mismatch and a pretty crash. On x86, this effectively
2042 * becomes a no-op since ipt_func and ipt_wrap are the same.
2046 ntoskrnl_findwrap(funcptr func)
2048 image_patch_table *patch;
2050 patch = ntoskrnl_functbl;
2051 while (patch->ipt_func != NULL) {
2052 if ((funcptr)patch->ipt_func == func)
2053 return ((funcptr)patch->ipt_wrap);
2061 ExInitializePagedLookasideList(paged_lookaside_list *lookaside,
2062 lookaside_alloc_func *allocfunc, lookaside_free_func *freefunc,
2063 uint32_t flags, size_t size, uint32_t tag, uint16_t depth)
2065 bzero((char *)lookaside, sizeof(paged_lookaside_list));
2067 if (size < sizeof(slist_entry))
2068 lookaside->nll_l.gl_size = sizeof(slist_entry);
2070 lookaside->nll_l.gl_size = size;
2071 lookaside->nll_l.gl_tag = tag;
2072 if (allocfunc == NULL)
2073 lookaside->nll_l.gl_allocfunc =
2074 ntoskrnl_findwrap((funcptr)ExAllocatePoolWithTag);
2076 lookaside->nll_l.gl_allocfunc = allocfunc;
2078 if (freefunc == NULL)
2079 lookaside->nll_l.gl_freefunc =
2080 ntoskrnl_findwrap((funcptr)ExFreePool);
2082 lookaside->nll_l.gl_freefunc = freefunc;
2085 KeInitializeSpinLock(&lookaside->nll_obsoletelock);
2088 lookaside->nll_l.gl_type = NonPagedPool;
2089 lookaside->nll_l.gl_depth = depth;
2090 lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
2094 ExDeletePagedLookasideList(paged_lookaside_list *lookaside)
2097 void (*freefunc)(void *);
2099 freefunc = lookaside->nll_l.gl_freefunc;
2100 while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
2101 MSCALL1(freefunc, buf);
2105 ExInitializeNPagedLookasideList(npaged_lookaside_list *lookaside,
2106 lookaside_alloc_func *allocfunc, lookaside_free_func *freefunc,
2107 uint32_t flags, size_t size, uint32_t tag, uint16_t depth)
2109 bzero((char *)lookaside, sizeof(npaged_lookaside_list));
2111 if (size < sizeof(slist_entry))
2112 lookaside->nll_l.gl_size = sizeof(slist_entry);
2114 lookaside->nll_l.gl_size = size;
2115 lookaside->nll_l.gl_tag = tag;
2116 if (allocfunc == NULL)
2117 lookaside->nll_l.gl_allocfunc =
2118 ntoskrnl_findwrap((funcptr)ExAllocatePoolWithTag);
2120 lookaside->nll_l.gl_allocfunc = allocfunc;
2122 if (freefunc == NULL)
2123 lookaside->nll_l.gl_freefunc =
2124 ntoskrnl_findwrap((funcptr)ExFreePool);
2126 lookaside->nll_l.gl_freefunc = freefunc;
2129 KeInitializeSpinLock(&lookaside->nll_obsoletelock);
2132 lookaside->nll_l.gl_type = NonPagedPool;
2133 lookaside->nll_l.gl_depth = depth;
2134 lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
2138 ExDeleteNPagedLookasideList(npaged_lookaside_list *lookaside)
2141 void (*freefunc)(void *);
2143 freefunc = lookaside->nll_l.gl_freefunc;
2144 while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
2145 MSCALL1(freefunc, buf);
2149 InterlockedPushEntrySList(slist_header *head, slist_entry *entry)
2151 slist_entry *oldhead;
2153 mtx_spinlock(&ntoskrnl_interlock);
2154 oldhead = ntoskrnl_pushsl(head, entry);
2155 mtx_spinunlock(&ntoskrnl_interlock);
2161 InterlockedPopEntrySList(slist_header *head)
2165 mtx_spinlock(&ntoskrnl_interlock);
2166 first = ntoskrnl_popsl(head);
2167 mtx_spinunlock(&ntoskrnl_interlock);
2172 static slist_entry *
2173 ExInterlockedPushEntrySList(slist_header *head, slist_entry *entry,
2176 return (InterlockedPushEntrySList(head, entry));
2179 static slist_entry *
2180 ExInterlockedPopEntrySList(slist_header *head, kspin_lock *lock)
2182 return (InterlockedPopEntrySList(head));
2186 ExQueryDepthSList(slist_header *head)
2190 mtx_spinlock(&ntoskrnl_interlock);
2191 depth = head->slh_list.slh_depth;
2192 mtx_spinunlock(&ntoskrnl_interlock);
2198 KeInitializeSpinLock(kspin_lock *lock)
2205 KefAcquireSpinLockAtDpcLevel(kspin_lock *lock)
2207 #ifdef NTOSKRNL_DEBUG_SPINLOCKS
2211 while (atomic_cmpset_acq_int((volatile u_int *)lock, 0, 1) == 0) {
2213 #ifdef NTOSKRNL_DEBUG_SPINLOCKS
2222 KefReleaseSpinLockFromDpcLevel(kspin_lock *lock)
2224 atomic_store_rel_int((volatile u_int *)lock, 0);
2228 KeAcquireSpinLockRaiseToDpc(kspin_lock *lock)
2232 if (KeGetCurrentIrql() > DISPATCH_LEVEL)
2233 panic("IRQL_NOT_LESS_THAN_OR_EQUAL");
2235 KeRaiseIrql(DISPATCH_LEVEL, &oldirql);
2236 KeAcquireSpinLockAtDpcLevel(lock);
2242 KeAcquireSpinLockAtDpcLevel(kspin_lock *lock)
2244 while (atomic_cmpset_acq_int((volatile u_int *)lock, 0, 1) == 0)
2249 KeReleaseSpinLockFromDpcLevel(kspin_lock *lock)
2251 atomic_store_rel_int((volatile u_int *)lock, 0);
2253 #endif /* __i386__ */
2256 InterlockedExchange(volatile uint32_t *dst, uintptr_t val)
2260 mtx_spinlock(&ntoskrnl_interlock);
2263 mtx_spinunlock(&ntoskrnl_interlock);
2269 InterlockedIncrement(volatile uint32_t *addend)
2271 atomic_add_long((volatile u_long *)addend, 1);
2276 InterlockedDecrement(volatile uint32_t *addend)
2278 atomic_subtract_long((volatile u_long *)addend, 1);
2283 ExInterlockedAddLargeStatistic(uint64_t *addend, uint32_t inc)
2285 mtx_spinlock(&ntoskrnl_interlock);
2287 mtx_spinunlock(&ntoskrnl_interlock);
2291 IoAllocateMdl(void *vaddr, uint32_t len, uint8_t secondarybuf,
2292 uint8_t chargequota, irp *iopkt)
2297 if (MmSizeOfMdl(vaddr, len) > MDL_ZONE_SIZE)
2298 m = ExAllocatePoolWithTag(NonPagedPool,
2299 MmSizeOfMdl(vaddr, len), 0);
2301 m = objcache_get(mdl_cache, M_NOWAIT);
2302 bzero(m, sizeof(mdl));
2309 MmInitializeMdl(m, vaddr, len);
2312 * MmInitializMdl() clears the flags field, so we
2313 * have to set this here. If the MDL came from the
2314 * MDL UMA zone, tag it so we can release it to
2315 * the right place later.
2318 m->mdl_flags = MDL_ZONE_ALLOCED;
2320 if (iopkt != NULL) {
2321 if (secondarybuf == TRUE) {
2323 last = iopkt->irp_mdl;
2324 while (last->mdl_next != NULL)
2325 last = last->mdl_next;
2328 if (iopkt->irp_mdl != NULL)
2329 panic("leaking an MDL in IoAllocateMdl()");
2343 if (m->mdl_flags & MDL_ZONE_ALLOCED)
2344 objcache_put(mdl_cache, m);
2350 MmAllocateContiguousMemory(uint32_t size, uint64_t highest)
2353 size_t pagelength = roundup(size, PAGE_SIZE);
2355 addr = ExAllocatePoolWithTag(NonPagedPool, pagelength, 0);
2360 #if 0 /* XXX swildner */
2362 MmAllocateContiguousMemorySpecifyCache(uint32_t size, uint64_t lowest,
2363 uint64_t highest, uint64_t boundary, enum nt_caching_type cachetype)
2365 vm_memattr_t memattr;
2368 switch (cachetype) {
2370 memattr = VM_MEMATTR_UNCACHEABLE;
2372 case MmWriteCombined:
2373 memattr = VM_MEMATTR_WRITE_COMBINING;
2375 case MmNonCachedUnordered:
2376 memattr = VM_MEMATTR_UNCACHEABLE;
2379 case MmHardwareCoherentCached:
2382 memattr = VM_MEMATTR_DEFAULT;
2386 ret = (void *)kmem_alloc_contig(kernel_map, size, M_ZERO | M_NOWAIT,
2387 lowest, highest, PAGE_SIZE, boundary, memattr);
2389 malloc_type_allocated(M_DEVBUF, round_page(size));
2394 MmAllocateContiguousMemorySpecifyCache(uint32_t size, uint64_t lowest,
2395 uint64_t highest, uint64_t boundary, enum nt_caching_type cachetype)
2399 size_t pagelength = roundup(size, PAGE_SIZE);
2401 addr = ExAllocatePoolWithTag(NonPagedPool, pagelength, 0);
2405 panic("%s", __func__);
2411 MmFreeContiguousMemory(void *base)
2417 MmFreeContiguousMemorySpecifyCache(void *base, uint32_t size,
2418 enum nt_caching_type cachetype)
2420 contigfree(base, size, M_DEVBUF);
2424 MmSizeOfMdl(void *vaddr, size_t len)
2428 l = sizeof(struct mdl) +
2429 (sizeof(vm_offset_t *) * SPAN_PAGES(vaddr, len));
2435 * The Microsoft documentation says this routine fills in the
2436 * page array of an MDL with the _physical_ page addresses that
2437 * comprise the buffer, but we don't really want to do that here.
2438 * Instead, we just fill in the page array with the kernel virtual
2439 * addresses of the buffers.
2442 MmBuildMdlForNonPagedPool(mdl *m)
2444 vm_offset_t *mdl_pages;
2447 pagecnt = SPAN_PAGES(m->mdl_byteoffset, m->mdl_bytecount);
2449 if (pagecnt > (m->mdl_size - sizeof(mdl)) / sizeof(vm_offset_t *))
2450 panic("not enough pages in MDL to describe buffer");
2452 mdl_pages = MmGetMdlPfnArray(m);
2454 for (i = 0; i < pagecnt; i++)
2455 *mdl_pages = (vm_offset_t)m->mdl_startva + (i * PAGE_SIZE);
2457 m->mdl_flags |= MDL_SOURCE_IS_NONPAGED_POOL;
2458 m->mdl_mappedsystemva = MmGetMdlVirtualAddress(m);
2462 MmMapLockedPages(mdl *buf, uint8_t accessmode)
2464 buf->mdl_flags |= MDL_MAPPED_TO_SYSTEM_VA;
2465 return (MmGetMdlVirtualAddress(buf));
2469 MmMapLockedPagesSpecifyCache(mdl *buf, uint8_t accessmode, uint32_t cachetype,
2470 void *vaddr, uint32_t bugcheck, uint32_t prio)
2472 return (MmMapLockedPages(buf, accessmode));
2476 MmUnmapLockedPages(void *vaddr, mdl *buf)
2478 buf->mdl_flags &= ~MDL_MAPPED_TO_SYSTEM_VA;
2482 * This function has a problem in that it will break if you
2483 * compile this module without PAE and try to use it on a PAE
2484 * kernel. Unfortunately, there's no way around this at the
2485 * moment. It's slightly less broken that using pmap_kextract().
2486 * You'd think the virtual memory subsystem would help us out
2487 * here, but it doesn't.
2491 MmGetPhysicalAddress(void *base)
2493 return (pmap_extract(kernel_map.pmap, (vm_offset_t)base));
2497 MmGetSystemRoutineAddress(unicode_string *ustr)
2501 if (RtlUnicodeStringToAnsiString(&astr, ustr, TRUE))
2503 return (ndis_get_routine_address(ntoskrnl_functbl, astr.as_buf));
2507 MmIsAddressValid(void *vaddr)
2509 if (pmap_extract(kernel_map.pmap, (vm_offset_t)vaddr))
2516 MmMapIoSpace(uint64_t paddr, uint32_t len, uint32_t cachetype)
2518 devclass_t nexus_class;
2519 device_t *nexus_devs, devp;
2520 int nexus_count = 0;
2521 device_t matching_dev = NULL;
2522 struct resource *res;
2526 /* There will always be at least one nexus. */
2528 nexus_class = devclass_find("nexus");
2529 devclass_get_devices(nexus_class, &nexus_devs, &nexus_count);
2531 for (i = 0; i < nexus_count; i++) {
2532 devp = nexus_devs[i];
2533 matching_dev = ntoskrnl_finddev(devp, paddr, &res);
2538 kfree(nexus_devs, M_TEMP);
2540 if (matching_dev == NULL)
2543 v = (vm_offset_t)rman_get_virtual(res);
2544 if (paddr > rman_get_start(res))
2545 v += paddr - rman_get_start(res);
2551 MmUnmapIoSpace(void *vaddr, size_t len)
2557 ntoskrnl_finddev(device_t dev, uint64_t paddr, struct resource **res)
2559 device_t *children = NULL;
2560 device_t matching_dev;
2563 struct resource_list *rl;
2564 struct resource_list_entry *rle;
2568 /* We only want devices that have been successfully probed. */
2570 if (device_is_alive(dev) == FALSE)
2573 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
2575 SLIST_FOREACH(rle, rl, link) {
2581 flags = rman_get_flags(r);
2583 if (rle->type == SYS_RES_MEMORY &&
2584 paddr >= rman_get_start(r) &&
2585 paddr <= rman_get_end(r)) {
2586 if (!(flags & RF_ACTIVE))
2587 bus_activate_resource(dev,
2588 SYS_RES_MEMORY, 0, r);
2596 * If this device has children, do another
2597 * level of recursion to inspect them.
2600 device_get_children(dev, &children, &childcnt);
2602 for (i = 0; i < childcnt; i++) {
2603 matching_dev = ntoskrnl_finddev(children[i], paddr, res);
2604 if (matching_dev != NULL) {
2605 kfree(children, M_TEMP);
2606 return (matching_dev);
2611 /* Won't somebody please think of the children! */
2613 if (children != NULL)
2614 kfree(children, M_TEMP);
2620 * Workitems are unlike DPCs, in that they run in a user-mode thread
2621 * context rather than at DISPATCH_LEVEL in kernel context. In our
2622 * case we run them in kernel context anyway.
2625 ntoskrnl_workitem_thread(void *arg)
2634 InitializeListHead(&kq->kq_disp);
2635 kq->kq_td = curthread;
2637 KeInitializeSpinLock(&kq->kq_lock);
2638 KeInitializeEvent(&kq->kq_proc, EVENT_TYPE_SYNC, FALSE);
2641 KeWaitForSingleObject(&kq->kq_proc, 0, 0, TRUE, NULL);
2643 KeAcquireSpinLock(&kq->kq_lock, &irql);
2647 KeReleaseSpinLock(&kq->kq_lock, irql);
2651 while (!IsListEmpty(&kq->kq_disp)) {
2652 l = RemoveHeadList(&kq->kq_disp);
2653 iw = CONTAINING_RECORD(l,
2654 io_workitem, iw_listentry);
2655 InitializeListHead((&iw->iw_listentry));
2656 if (iw->iw_func == NULL)
2658 KeReleaseSpinLock(&kq->kq_lock, irql);
2659 MSCALL2(iw->iw_func, iw->iw_dobj, iw->iw_ctx);
2660 KeAcquireSpinLock(&kq->kq_lock, &irql);
2663 KeReleaseSpinLock(&kq->kq_lock, irql);
2668 return; /* notreached */
2672 RtlCharToInteger(const char *src, uint32_t base, uint32_t *val)
2678 return (STATUS_ACCESS_VIOLATION);
2679 while (*src != '\0' && *src <= ' ')
2683 else if (*src == '-') {
2694 } else if (*src == 'o') {
2697 } else if (*src == 'x') {
2702 } else if (!(base == 2 || base == 8 || base == 10 || base == 16))
2703 return (STATUS_INVALID_PARAMETER);
2705 for (res = 0; *src; src++) {
2709 else if (isxdigit(*src))
2710 v = tolower(*src) - 'a' + 10;
2714 return (STATUS_INVALID_PARAMETER);
2715 res = res * base + v;
2717 *val = negative ? -res : res;
2718 return (STATUS_SUCCESS);
2722 ntoskrnl_destroy_workitem_threads(void)
2727 for (i = 0; i < WORKITEM_THREADS; i++) {
2730 KeSetEvent(&kq->kq_proc, IO_NO_INCREMENT, FALSE);
2732 tsleep(kq->kq_td, 0, "waitiw", hz/10);
2737 IoAllocateWorkItem(device_object *dobj)
2741 iw = objcache_get(iw_cache, M_NOWAIT);
2745 InitializeListHead(&iw->iw_listentry);
2748 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
2749 iw->iw_idx = wq_idx;
2750 WORKIDX_INC(wq_idx);
2751 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
2757 IoFreeWorkItem(io_workitem *iw)
2759 objcache_put(iw_cache, iw);
2763 IoQueueWorkItem(io_workitem *iw, io_workitem_func iw_func, uint32_t qtype,
2771 kq = wq_queues + iw->iw_idx;
2773 KeAcquireSpinLock(&kq->kq_lock, &irql);
2776 * Traverse the list and make sure this workitem hasn't
2777 * already been inserted. Queuing the same workitem
2778 * twice will hose the list but good.
2781 l = kq->kq_disp.nle_flink;
2782 while (l != &kq->kq_disp) {
2783 cur = CONTAINING_RECORD(l, io_workitem, iw_listentry);
2785 /* Already queued -- do nothing. */
2786 KeReleaseSpinLock(&kq->kq_lock, irql);
2792 iw->iw_func = iw_func;
2795 InsertTailList((&kq->kq_disp), (&iw->iw_listentry));
2796 KeReleaseSpinLock(&kq->kq_lock, irql);
2798 KeSetEvent(&kq->kq_proc, IO_NO_INCREMENT, FALSE);
2802 ntoskrnl_workitem(device_object *dobj, void *arg)
2809 w = (work_queue_item *)dobj;
2810 f = (work_item_func)w->wqi_func;
2811 objcache_put(iw_cache, iw);
2812 MSCALL2(f, w, w->wqi_ctx);
2816 * The ExQueueWorkItem() API is deprecated in Windows XP. Microsoft
2817 * warns that it's unsafe and to use IoQueueWorkItem() instead. The
2818 * problem with ExQueueWorkItem() is that it can't guard against
2819 * the condition where a driver submits a job to the work queue and
2820 * is then unloaded before the job is able to run. IoQueueWorkItem()
2821 * acquires a reference to the device's device_object via the
2822 * object manager and retains it until after the job has completed,
2823 * which prevents the driver from being unloaded before the job
2824 * runs. (We don't currently support this behavior, though hopefully
2825 * that will change once the object manager API is fleshed out a bit.)
2827 * Having said all that, the ExQueueWorkItem() API remains, because
2828 * there are still other parts of Windows that use it, including
2829 * NDIS itself: NdisScheduleWorkItem() calls ExQueueWorkItem().
2830 * We fake up the ExQueueWorkItem() API on top of our implementation
2831 * of IoQueueWorkItem(). Workitem thread #3 is reserved exclusively
2832 * for ExQueueWorkItem() jobs, and we pass a pointer to the work
2833 * queue item (provided by the caller) in to IoAllocateWorkItem()
2834 * instead of the device_object. We need to save this pointer so
2835 * we can apply a sanity check: as with the DPC queue and other
2836 * workitem queues, we can't allow the same work queue item to
2837 * be queued twice. If it's already pending, we silently return
2841 ExQueueWorkItem(work_queue_item *w, uint32_t qtype)
2844 io_workitem_func iwf;
2852 * We need to do a special sanity test to make sure
2853 * the ExQueueWorkItem() API isn't used to queue
2854 * the same workitem twice. Rather than checking the
2855 * io_workitem pointer itself, we test the attached
2856 * device object, which is really a pointer to the
2857 * legacy work queue item structure.
2860 kq = wq_queues + WORKITEM_LEGACY_THREAD;
2861 KeAcquireSpinLock(&kq->kq_lock, &irql);
2862 l = kq->kq_disp.nle_flink;
2863 while (l != &kq->kq_disp) {
2864 cur = CONTAINING_RECORD(l, io_workitem, iw_listentry);
2865 if (cur->iw_dobj == (device_object *)w) {
2866 /* Already queued -- do nothing. */
2867 KeReleaseSpinLock(&kq->kq_lock, irql);
2872 KeReleaseSpinLock(&kq->kq_lock, irql);
2874 iw = IoAllocateWorkItem((device_object *)w);
2878 iw->iw_idx = WORKITEM_LEGACY_THREAD;
2879 iwf = (io_workitem_func)ntoskrnl_findwrap((funcptr)ntoskrnl_workitem);
2880 IoQueueWorkItem(iw, iwf, qtype, iw);
2884 RtlZeroMemory(void *dst, size_t len)
2890 RtlSecureZeroMemory(void *dst, size_t len)
2892 memset(dst, 0, len);
2896 RtlFillMemory(void *dst, size_t len, uint8_t c)
2898 memset(dst, c, len);
2902 RtlMoveMemory(void *dst, const void *src, size_t len)
2904 memmove(dst, src, len);
2908 RtlCopyMemory(void *dst, const void *src, size_t len)
2910 bcopy(src, dst, len);
2914 RtlCompareMemory(const void *s1, const void *s2, size_t len)
2919 m1 = __DECONST(char *, s1);
2920 m2 = __DECONST(char *, s2);
2922 for (i = 0; i < len && m1[i] == m2[i]; i++);
2927 RtlInitAnsiString(ansi_string *dst, char *src)
2935 a->as_len = a->as_maxlen = 0;
2939 a->as_len = a->as_maxlen = strlen(src);
2944 RtlInitUnicodeString(unicode_string *dst, uint16_t *src)
2953 u->us_len = u->us_maxlen = 0;
2960 u->us_len = u->us_maxlen = i * 2;
2965 RtlUnicodeStringToInteger(unicode_string *ustr, uint32_t base, uint32_t *val)
2972 uchr = ustr->us_buf;
2974 bzero(abuf, sizeof(abuf));
2976 if ((char)((*uchr) & 0xFF) == '-') {
2980 } else if ((char)((*uchr) & 0xFF) == '+') {
2987 if ((char)((*uchr) & 0xFF) == 'b') {
2991 } else if ((char)((*uchr) & 0xFF) == 'o') {
2995 } else if ((char)((*uchr) & 0xFF) == 'x') {
3009 ntoskrnl_unicode_to_ascii(uchr, astr, len);
3010 *val = strtoul(abuf, NULL, base);
3012 return (STATUS_SUCCESS);
3016 RtlFreeUnicodeString(unicode_string *ustr)
3018 if (ustr->us_buf == NULL)
3020 ExFreePool(ustr->us_buf);
3021 ustr->us_buf = NULL;
3025 RtlFreeAnsiString(ansi_string *astr)
3027 if (astr->as_buf == NULL)
3029 ExFreePool(astr->as_buf);
3030 astr->as_buf = NULL;
3034 atoi(const char *str)
3036 return (int)strtol(str, NULL, 10);
3040 atol(const char *str)
3042 return strtol(str, NULL, 10);
3051 skrandom(tv.tv_usec);
3052 return ((int)krandom());
3056 srand(unsigned int seed)
3062 IoIsWdmVersionAvailable(uint8_t major, uint8_t minor)
3064 if (major == WDM_MAJOR && minor == WDM_MINOR_WINXP)
3070 IoOpenDeviceRegistryKey(struct device_object *devobj, uint32_t type,
3071 uint32_t mask, void **key)
3073 return (NDIS_STATUS_INVALID_DEVICE_REQUEST);
3077 IoGetDeviceObjectPointer(unicode_string *name, uint32_t reqaccess,
3078 void *fileobj, device_object *devobj)
3080 return (STATUS_SUCCESS);
3084 IoGetDeviceProperty(device_object *devobj, uint32_t regprop, uint32_t buflen,
3085 void *prop, uint32_t *reslen)
3090 drv = devobj->do_drvobj;
3093 case DEVPROP_DRIVER_KEYNAME:
3095 *name = drv->dro_drivername.us_buf;
3096 *reslen = drv->dro_drivername.us_len;
3099 return (STATUS_INVALID_PARAMETER_2);
3103 return (STATUS_SUCCESS);
3107 KeInitializeMutex(kmutant *kmutex, uint32_t level)
3109 InitializeListHead((&kmutex->km_header.dh_waitlisthead));
3110 kmutex->km_abandoned = FALSE;
3111 kmutex->km_apcdisable = 1;
3112 kmutex->km_header.dh_sigstate = 1;
3113 kmutex->km_header.dh_type = DISP_TYPE_MUTANT;
3114 kmutex->km_header.dh_size = sizeof(kmutant) / sizeof(uint32_t);
3115 kmutex->km_ownerthread = NULL;
3119 KeReleaseMutex(kmutant *kmutex, uint8_t kwait)
3123 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
3124 prevstate = kmutex->km_header.dh_sigstate;
3125 if (kmutex->km_ownerthread != curthread) {
3126 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3127 return (STATUS_MUTANT_NOT_OWNED);
3130 kmutex->km_header.dh_sigstate++;
3131 kmutex->km_abandoned = FALSE;
3133 if (kmutex->km_header.dh_sigstate == 1) {
3134 kmutex->km_ownerthread = NULL;
3135 ntoskrnl_waittest(&kmutex->km_header, IO_NO_INCREMENT);
3138 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3144 KeReadStateMutex(kmutant *kmutex)
3146 return (kmutex->km_header.dh_sigstate);
3150 KeInitializeEvent(nt_kevent *kevent, uint32_t type, uint8_t state)
3152 InitializeListHead((&kevent->k_header.dh_waitlisthead));
3153 kevent->k_header.dh_sigstate = state;
3154 if (type == EVENT_TYPE_NOTIFY)
3155 kevent->k_header.dh_type = DISP_TYPE_NOTIFICATION_EVENT;
3157 kevent->k_header.dh_type = DISP_TYPE_SYNCHRONIZATION_EVENT;
3158 kevent->k_header.dh_size = sizeof(nt_kevent) / sizeof(uint32_t);
3162 KeResetEvent(nt_kevent *kevent)
3166 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
3167 prevstate = kevent->k_header.dh_sigstate;
3168 kevent->k_header.dh_sigstate = FALSE;
3169 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3175 KeSetEvent(nt_kevent *kevent, uint32_t increment, uint8_t kwait)
3179 nt_dispatch_header *dh;
3183 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
3184 prevstate = kevent->k_header.dh_sigstate;
3185 dh = &kevent->k_header;
3187 if (IsListEmpty(&dh->dh_waitlisthead))
3189 * If there's nobody in the waitlist, just set
3190 * the state to signalled.
3192 dh->dh_sigstate = 1;
3195 * Get the first waiter. If this is a synchronization
3196 * event, just wake up that one thread (don't bother
3197 * setting the state to signalled since we're supposed
3198 * to automatically clear synchronization events anyway).
3200 * If it's a notification event, or the first
3201 * waiter is doing a WAITTYPE_ALL wait, go through
3202 * the full wait satisfaction process.
3204 w = CONTAINING_RECORD(dh->dh_waitlisthead.nle_flink,
3205 wait_block, wb_waitlist);
3208 if (kevent->k_header.dh_type == DISP_TYPE_NOTIFICATION_EVENT ||
3209 w->wb_waittype == WAITTYPE_ALL) {
3210 if (prevstate == 0) {
3211 dh->dh_sigstate = 1;
3212 ntoskrnl_waittest(dh, increment);
3215 w->wb_awakened |= TRUE;
3216 cv_broadcastpri(&we->we_cv,
3217 (w->wb_oldpri - (increment * 4)) > PRI_MIN_KERN ?
3218 w->wb_oldpri - (increment * 4) : PRI_MIN_KERN);
3222 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3228 KeClearEvent(nt_kevent *kevent)
3230 kevent->k_header.dh_sigstate = FALSE;
3234 KeReadStateEvent(nt_kevent *kevent)
3236 return (kevent->k_header.dh_sigstate);
3240 * The object manager in Windows is responsible for managing
3241 * references and access to various types of objects, including
3242 * device_objects, events, threads, timers and so on. However,
3243 * there's a difference in the way objects are handled in user
3244 * mode versus kernel mode.
3246 * In user mode (i.e. Win32 applications), all objects are
3247 * managed by the object manager. For example, when you create
3248 * a timer or event object, you actually end up with an
3249 * object_header (for the object manager's bookkeeping
3250 * purposes) and an object body (which contains the actual object
3251 * structure, e.g. ktimer, kevent, etc...). This allows Windows
3252 * to manage resource quotas and to enforce access restrictions
3253 * on basically every kind of system object handled by the kernel.
3255 * However, in kernel mode, you only end up using the object
3256 * manager some of the time. For example, in a driver, you create
3257 * a timer object by simply allocating the memory for a ktimer
3258 * structure and initializing it with KeInitializeTimer(). Hence,
3259 * the timer has no object_header and no reference counting or
3260 * security/resource checks are done on it. The assumption in
3261 * this case is that if you're running in kernel mode, you know
3262 * what you're doing, and you're already at an elevated privilege
3265 * There are some exceptions to this. The two most important ones
3266 * for our purposes are device_objects and threads. We need to use
3267 * the object manager to do reference counting on device_objects,
3268 * and for threads, you can only get a pointer to a thread's
3269 * dispatch header by using ObReferenceObjectByHandle() on the
3270 * handle returned by PsCreateSystemThread().
3274 ObReferenceObjectByHandle(ndis_handle handle, uint32_t reqaccess, void *otype,
3275 uint8_t accessmode, void **object, void **handleinfo)
3279 nr = kmalloc(sizeof(nt_objref), M_DEVBUF, M_NOWAIT|M_ZERO);
3281 return (STATUS_INSUFFICIENT_RESOURCES);
3283 InitializeListHead((&nr->no_dh.dh_waitlisthead));
3284 nr->no_obj = handle;
3285 nr->no_dh.dh_type = DISP_TYPE_THREAD;
3286 nr->no_dh.dh_sigstate = 0;
3287 nr->no_dh.dh_size = (uint8_t)(sizeof(struct thread) /
3289 TAILQ_INSERT_TAIL(&ntoskrnl_reflist, nr, link);
3292 return (STATUS_SUCCESS);
3296 ObfDereferenceObject(void *object)
3301 TAILQ_REMOVE(&ntoskrnl_reflist, nr, link);
3302 kfree(nr, M_DEVBUF);
3306 ZwClose(ndis_handle handle)
3308 return (STATUS_SUCCESS);
3312 WmiQueryTraceInformation(uint32_t traceclass, void *traceinfo,
3313 uint32_t infolen, uint32_t reqlen, void *buf)
3315 return (STATUS_NOT_FOUND);
3319 WmiTraceMessage(uint64_t loghandle, uint32_t messageflags,
3320 void *guid, uint16_t messagenum, ...)
3322 return (STATUS_SUCCESS);
3326 IoWMIRegistrationControl(device_object *dobj, uint32_t action)
3328 return (STATUS_SUCCESS);
3332 * This is here just in case the thread returns without calling
3333 * PsTerminateSystemThread().
3336 ntoskrnl_thrfunc(void *arg)
3338 thread_context *thrctx;
3339 uint32_t (*tfunc)(void *);
3344 tfunc = thrctx->tc_thrfunc;
3345 tctx = thrctx->tc_thrctx;
3346 kfree(thrctx, M_TEMP);
3348 rval = MSCALL1(tfunc, tctx);
3350 PsTerminateSystemThread(rval);
3351 return; /* notreached */
3355 PsCreateSystemThread(ndis_handle *handle, uint32_t reqaccess, void *objattrs,
3356 ndis_handle phandle, void *clientid, void *thrfunc, void *thrctx)
3362 tc = kmalloc(sizeof(thread_context), M_TEMP, M_NOWAIT);
3364 return (STATUS_INSUFFICIENT_RESOURCES);
3366 tc->tc_thrctx = thrctx;
3367 tc->tc_thrfunc = thrfunc;
3369 error = kthread_create(ntoskrnl_thrfunc, tc, &p, "Win kthread %d",
3374 return (STATUS_INSUFFICIENT_RESOURCES);
3380 return (STATUS_SUCCESS);
3384 * In Windows, the exit of a thread is an event that you're allowed
3385 * to wait on, assuming you've obtained a reference to the thread using
3386 * ObReferenceObjectByHandle(). Unfortunately, the only way we can
3387 * simulate this behavior is to register each thread we create in a
3388 * reference list, and if someone holds a reference to us, we poke
3392 PsTerminateSystemThread(ndis_status status)
3394 struct nt_objref *nr;
3396 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
3397 TAILQ_FOREACH(nr, &ntoskrnl_reflist, link) {
3398 if (nr->no_obj != curthread->td_proc)
3400 nr->no_dh.dh_sigstate = 1;
3401 ntoskrnl_waittest(&nr->no_dh, IO_NO_INCREMENT);
3404 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3410 return (0); /* notreached */
3414 DbgPrint(char *fmt, ...)
3423 return (STATUS_SUCCESS);
3430 Debugger("DbgBreakPoint(): breakpoint");
3434 KeBugCheckEx(uint32_t code, u_long param1, u_long param2, u_long param3,
3437 panic("KeBugCheckEx: STOP 0x%X", code);
3441 ntoskrnl_timercall(void *arg)
3447 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
3451 #ifdef NTOSKRNL_DEBUG_TIMERS
3452 ntoskrnl_timer_fires++;
3454 ntoskrnl_remove_timer(timer);
3457 * This should never happen, but complain
3461 if (timer->k_header.dh_inserted == FALSE) {
3462 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3463 kprintf("NTOS: timer %p fired even though "
3464 "it was canceled\n", timer);
3468 /* Mark the timer as no longer being on the timer queue. */
3470 timer->k_header.dh_inserted = FALSE;
3472 /* Now signal the object and satisfy any waits on it. */
3474 timer->k_header.dh_sigstate = 1;
3475 ntoskrnl_waittest(&timer->k_header, IO_NO_INCREMENT);
3478 * If this is a periodic timer, re-arm it
3479 * so it will fire again. We do this before
3480 * calling any deferred procedure calls because
3481 * it's possible the DPC might cancel the timer,
3482 * in which case it would be wrong for us to
3483 * re-arm it again afterwards.
3486 if (timer->k_period) {
3488 tv.tv_usec = timer->k_period * 1000;
3489 timer->k_header.dh_inserted = TRUE;
3490 ntoskrnl_insert_timer(timer, tvtohz_high(&tv));
3491 #ifdef NTOSKRNL_DEBUG_TIMERS
3492 ntoskrnl_timer_reloads++;
3498 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3500 /* If there's a DPC associated with the timer, queue it up. */
3503 KeInsertQueueDpc(dpc, NULL, NULL);
3506 #ifdef NTOSKRNL_DEBUG_TIMERS
3508 sysctl_show_timers(SYSCTL_HANDLER_ARGS)
3513 ntoskrnl_show_timers();
3514 return (sysctl_handle_int(oidp, &ret, 0, req));
3518 ntoskrnl_show_timers(void)
3523 mtx_spinlock(&ntoskrnl_calllock);
3524 l = ntoskrnl_calllist.nle_flink;
3525 while(l != &ntoskrnl_calllist) {
3529 mtx_spinunlock(&ntoskrnl_calllock);
3532 kprintf("%d timers available (out of %d)\n", i, NTOSKRNL_TIMEOUTS);
3533 kprintf("timer sets: %qu\n", ntoskrnl_timer_sets);
3534 kprintf("timer reloads: %qu\n", ntoskrnl_timer_reloads);
3535 kprintf("timer cancels: %qu\n", ntoskrnl_timer_cancels);
3536 kprintf("timer fires: %qu\n", ntoskrnl_timer_fires);
3542 * Must be called with dispatcher lock held.
3546 ntoskrnl_insert_timer(ktimer *timer, int ticks)
3553 * Try and allocate a timer.
3555 mtx_spinlock(&ntoskrnl_calllock);
3556 if (IsListEmpty(&ntoskrnl_calllist)) {
3557 mtx_spinunlock(&ntoskrnl_calllock);
3558 #ifdef NTOSKRNL_DEBUG_TIMERS
3559 ntoskrnl_show_timers();
3561 panic("out of timers!");
3563 l = RemoveHeadList(&ntoskrnl_calllist);
3564 mtx_spinunlock(&ntoskrnl_calllock);
3566 e = CONTAINING_RECORD(l, callout_entry, ce_list);
3569 timer->k_callout = c;
3572 callout_reset(c, ticks, ntoskrnl_timercall, timer);
3576 ntoskrnl_remove_timer(ktimer *timer)
3580 e = (callout_entry *)timer->k_callout;
3581 callout_stop(timer->k_callout);
3583 mtx_spinlock(&ntoskrnl_calllock);
3584 InsertHeadList((&ntoskrnl_calllist), (&e->ce_list));
3585 mtx_spinunlock(&ntoskrnl_calllock);
3589 KeInitializeTimer(ktimer *timer)
3594 KeInitializeTimerEx(timer, EVENT_TYPE_NOTIFY);
3598 KeInitializeTimerEx(ktimer *timer, uint32_t type)
3603 bzero((char *)timer, sizeof(ktimer));
3604 InitializeListHead((&timer->k_header.dh_waitlisthead));
3605 timer->k_header.dh_sigstate = FALSE;
3606 timer->k_header.dh_inserted = FALSE;
3607 if (type == EVENT_TYPE_NOTIFY)
3608 timer->k_header.dh_type = DISP_TYPE_NOTIFICATION_TIMER;
3610 timer->k_header.dh_type = DISP_TYPE_SYNCHRONIZATION_TIMER;
3611 timer->k_header.dh_size = sizeof(ktimer) / sizeof(uint32_t);
3615 * DPC subsystem. A Windows Defered Procedure Call has the following
3617 * - It runs at DISPATCH_LEVEL.
3618 * - It can have one of 3 importance values that control when it
3619 * runs relative to other DPCs in the queue.
3620 * - On SMP systems, it can be set to run on a specific processor.
3621 * In order to satisfy the last property, we create a DPC thread for
3622 * each CPU in the system and bind it to that CPU. Each thread
3623 * maintains three queues with different importance levels, which
3624 * will be processed in order from lowest to highest.
3626 * In Windows, interrupt handlers run as DPCs. (Not to be confused
3627 * with ISRs, which run in interrupt context and can preempt DPCs.)
3628 * ISRs are given the highest importance so that they'll take
3629 * precedence over timers and other things.
3633 ntoskrnl_dpc_thread(void *arg)
3642 InitializeListHead(&kq->kq_disp);
3643 kq->kq_td = curthread;
3645 kq->kq_running = FALSE;
3646 KeInitializeSpinLock(&kq->kq_lock);
3647 KeInitializeEvent(&kq->kq_proc, EVENT_TYPE_SYNC, FALSE);
3648 KeInitializeEvent(&kq->kq_done, EVENT_TYPE_SYNC, FALSE);
3651 * Elevate our priority. DPCs are used to run interrupt
3652 * handlers, and they should trigger as soon as possible
3653 * once scheduled by an ISR.
3656 #ifdef NTOSKRNL_MULTIPLE_DPCS
3657 sched_bind(curthread, kq->kq_cpu);
3659 lwkt_setpri_self(TDPRI_INT_HIGH);
3662 KeWaitForSingleObject(&kq->kq_proc, 0, 0, TRUE, NULL);
3664 KeAcquireSpinLock(&kq->kq_lock, &irql);
3668 KeReleaseSpinLock(&kq->kq_lock, irql);
3672 kq->kq_running = TRUE;
3674 while (!IsListEmpty(&kq->kq_disp)) {
3675 l = RemoveHeadList((&kq->kq_disp));
3676 d = CONTAINING_RECORD(l, kdpc, k_dpclistentry);
3677 InitializeListHead((&d->k_dpclistentry));
3678 KeReleaseSpinLockFromDpcLevel(&kq->kq_lock);
3679 MSCALL4(d->k_deferedfunc, d, d->k_deferredctx,
3680 d->k_sysarg1, d->k_sysarg2);
3681 KeAcquireSpinLockAtDpcLevel(&kq->kq_lock);
3684 kq->kq_running = FALSE;
3686 KeReleaseSpinLock(&kq->kq_lock, irql);
3688 KeSetEvent(&kq->kq_done, IO_NO_INCREMENT, FALSE);
3693 return; /* notreached */
3697 ntoskrnl_destroy_dpc_threads(void)
3704 #ifdef NTOSKRNL_MULTIPLE_DPCS
3705 for (i = 0; i < ncpus; i++) {
3707 for (i = 0; i < 1; i++) {
3712 KeInitializeDpc(&dpc, NULL, NULL);
3713 KeSetTargetProcessorDpc(&dpc, i);
3714 KeInsertQueueDpc(&dpc, NULL, NULL);
3716 tsleep(kq->kq_td, 0, "dpcw", hz/10);
3721 ntoskrnl_insert_dpc(list_entry *head, kdpc *dpc)
3726 l = head->nle_flink;
3728 d = CONTAINING_RECORD(l, kdpc, k_dpclistentry);
3734 if (dpc->k_importance == KDPC_IMPORTANCE_LOW)
3735 InsertTailList((head), (&dpc->k_dpclistentry));
3737 InsertHeadList((head), (&dpc->k_dpclistentry));
3743 KeInitializeDpc(kdpc *dpc, void *dpcfunc, void *dpcctx)
3749 dpc->k_deferedfunc = dpcfunc;
3750 dpc->k_deferredctx = dpcctx;
3751 dpc->k_num = KDPC_CPU_DEFAULT;
3752 dpc->k_importance = KDPC_IMPORTANCE_MEDIUM;
3753 InitializeListHead((&dpc->k_dpclistentry));
3757 KeInsertQueueDpc(kdpc *dpc, void *sysarg1, void *sysarg2)
3768 #ifdef NTOSKRNL_MULTIPLE_DPCS
3769 KeRaiseIrql(DISPATCH_LEVEL, &irql);
3772 * By default, the DPC is queued to run on the same CPU
3773 * that scheduled it.
3776 if (dpc->k_num == KDPC_CPU_DEFAULT)
3777 kq += curthread->td_oncpu;
3780 KeAcquireSpinLockAtDpcLevel(&kq->kq_lock);
3782 KeAcquireSpinLock(&kq->kq_lock, &irql);
3785 r = ntoskrnl_insert_dpc(&kq->kq_disp, dpc);
3787 dpc->k_sysarg1 = sysarg1;
3788 dpc->k_sysarg2 = sysarg2;
3790 KeReleaseSpinLock(&kq->kq_lock, irql);
3795 KeSetEvent(&kq->kq_proc, IO_NO_INCREMENT, FALSE);
3801 KeRemoveQueueDpc(kdpc *dpc)
3809 #ifdef NTOSKRNL_MULTIPLE_DPCS
3810 KeRaiseIrql(DISPATCH_LEVEL, &irql);
3812 kq = kq_queues + dpc->k_num;
3814 KeAcquireSpinLockAtDpcLevel(&kq->kq_lock);
3817 KeAcquireSpinLock(&kq->kq_lock, &irql);
3820 if (dpc->k_dpclistentry.nle_flink == &dpc->k_dpclistentry) {
3821 KeReleaseSpinLockFromDpcLevel(&kq->kq_lock);
3826 RemoveEntryList((&dpc->k_dpclistentry));
3827 InitializeListHead((&dpc->k_dpclistentry));
3829 KeReleaseSpinLock(&kq->kq_lock, irql);
3835 KeSetImportanceDpc(kdpc *dpc, uint32_t imp)
3837 if (imp != KDPC_IMPORTANCE_LOW &&
3838 imp != KDPC_IMPORTANCE_MEDIUM &&
3839 imp != KDPC_IMPORTANCE_HIGH)
3842 dpc->k_importance = (uint8_t)imp;
3846 KeSetTargetProcessorDpc(kdpc *dpc, uint8_t cpu)
3855 KeFlushQueuedDpcs(void)
3861 * Poke each DPC queue and wait
3862 * for them to drain.
3865 #ifdef NTOSKRNL_MULTIPLE_DPCS
3866 for (i = 0; i < ncpus; i++) {
3868 for (i = 0; i < 1; i++) {
3871 KeSetEvent(&kq->kq_proc, IO_NO_INCREMENT, FALSE);
3872 KeWaitForSingleObject(&kq->kq_done, 0, 0, TRUE, NULL);
3877 KeGetCurrentProcessorNumber(void)
3879 return (curthread->td_gd->gd_cpuid);
3883 KeSetTimerEx(ktimer *timer, int64_t duetime, uint32_t period, kdpc *dpc)
3892 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
3894 if (timer->k_header.dh_inserted == TRUE) {
3895 ntoskrnl_remove_timer(timer);
3896 #ifdef NTOSKRNL_DEBUG_TIMERS
3897 ntoskrnl_timer_cancels++;
3899 timer->k_header.dh_inserted = FALSE;
3904 timer->k_duetime = duetime;
3905 timer->k_period = period;
3906 timer->k_header.dh_sigstate = FALSE;
3910 tv.tv_sec = - (duetime) / 10000000;
3911 tv.tv_usec = (- (duetime) / 10) -
3912 (tv.tv_sec * 1000000);
3914 ntoskrnl_time(&curtime);
3915 if (duetime < curtime)
3916 tv.tv_sec = tv.tv_usec = 0;
3918 tv.tv_sec = ((duetime) - curtime) / 10000000;
3919 tv.tv_usec = ((duetime) - curtime) / 10 -
3920 (tv.tv_sec * 1000000);
3924 timer->k_header.dh_inserted = TRUE;
3925 ntoskrnl_insert_timer(timer, tvtohz_high(&tv));
3926 #ifdef NTOSKRNL_DEBUG_TIMERS
3927 ntoskrnl_timer_sets++;
3930 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3936 KeSetTimer(ktimer *timer, int64_t duetime, kdpc *dpc)
3938 return (KeSetTimerEx(timer, duetime, 0, dpc));
3942 * The Windows DDK documentation seems to say that cancelling
3943 * a timer that has a DPC will result in the DPC also being
3944 * cancelled, but this isn't really the case.
3948 KeCancelTimer(ktimer *timer)
3955 lockmgr(&ntoskrnl_dispatchlock, LK_EXCLUSIVE);
3957 pending = timer->k_header.dh_inserted;
3959 if (timer->k_header.dh_inserted == TRUE) {
3960 timer->k_header.dh_inserted = FALSE;
3961 ntoskrnl_remove_timer(timer);
3962 #ifdef NTOSKRNL_DEBUG_TIMERS
3963 ntoskrnl_timer_cancels++;
3967 lockmgr(&ntoskrnl_dispatchlock, LK_RELEASE);
3973 KeReadStateTimer(ktimer *timer)
3975 return (timer->k_header.dh_sigstate);
3979 KeDelayExecutionThread(uint8_t wait_mode, uint8_t alertable, int64_t *interval)
3984 panic("invalid wait_mode %d", wait_mode);
3986 KeInitializeTimer(&timer);
3987 KeSetTimer(&timer, *interval, NULL);
3988 KeWaitForSingleObject(&timer, 0, 0, alertable, NULL);
3990 return STATUS_SUCCESS;
3994 KeQueryInterruptTime(void)
3999 getmicrouptime(&tv);
4001 ticks = tvtohz_high(&tv);
4003 return ticks * ((10000000 + hz - 1) / hz);
4006 static struct thread *
4007 KeGetCurrentThread(void)
4014 KeSetPriorityThread(struct thread *td, int32_t pri)
4019 return LOW_REALTIME_PRIORITY;
4021 if (td->td_pri >= TDPRI_INT_HIGH)
4022 old = HIGH_PRIORITY;
4023 else if (td->td_pri <= TDPRI_IDLE_WORK)
4026 old = LOW_REALTIME_PRIORITY;
4028 if (pri == HIGH_PRIORITY)
4029 lwkt_setpri(td, TDPRI_INT_HIGH);
4030 if (pri == LOW_REALTIME_PRIORITY)
4031 lwkt_setpri(td, TDPRI_SOFT_TIMER);
4032 if (pri == LOW_PRIORITY)
4033 lwkt_setpri(td, TDPRI_IDLE_WORK);
4041 kprintf("ntoskrnl dummy called...\n");
4045 image_patch_table ntoskrnl_functbl[] = {
4046 IMPORT_SFUNC(RtlZeroMemory, 2),
4047 IMPORT_SFUNC(RtlSecureZeroMemory, 2),
4048 IMPORT_SFUNC(RtlFillMemory, 3),
4049 IMPORT_SFUNC(RtlMoveMemory, 3),
4050 IMPORT_SFUNC(RtlCharToInteger, 3),
4051 IMPORT_SFUNC(RtlCopyMemory, 3),
4052 IMPORT_SFUNC(RtlCopyString, 2),
4053 IMPORT_SFUNC(RtlCompareMemory, 3),
4054 IMPORT_SFUNC(RtlEqualUnicodeString, 3),
4055 IMPORT_SFUNC(RtlCopyUnicodeString, 2),
4056 IMPORT_SFUNC(RtlUnicodeStringToAnsiString, 3),
4057 IMPORT_SFUNC(RtlAnsiStringToUnicodeString, 3),
4058 IMPORT_SFUNC(RtlInitAnsiString, 2),
4059 IMPORT_SFUNC_MAP(RtlInitString, RtlInitAnsiString, 2),
4060 IMPORT_SFUNC(RtlInitUnicodeString, 2),
4061 IMPORT_SFUNC(RtlFreeAnsiString, 1),
4062 IMPORT_SFUNC(RtlFreeUnicodeString, 1),
4063 IMPORT_SFUNC(RtlUnicodeStringToInteger, 3),
4064 IMPORT_CFUNC_MAP(sprintf, ksprintf, 0),
4065 IMPORT_CFUNC_MAP(vsprintf, kvsprintf, 0),
4066 IMPORT_CFUNC_MAP(_snprintf, ksnprintf, 0),
4067 IMPORT_CFUNC_MAP(_vsnprintf, kvsnprintf, 0),
4068 IMPORT_CFUNC(DbgPrint, 0),
4069 IMPORT_SFUNC(DbgBreakPoint, 0),
4070 IMPORT_SFUNC(KeBugCheckEx, 5),
4071 IMPORT_CFUNC(strncmp, 0),
4072 IMPORT_CFUNC(strcmp, 0),
4073 IMPORT_CFUNC_MAP(stricmp, strcasecmp, 0),
4074 IMPORT_CFUNC(strncpy, 0),
4075 IMPORT_CFUNC(strcpy, 0),
4076 IMPORT_CFUNC(strlen, 0),
4077 IMPORT_CFUNC_MAP(toupper, ntoskrnl_toupper, 0),
4078 IMPORT_CFUNC_MAP(tolower, ntoskrnl_tolower, 0),
4079 IMPORT_CFUNC_MAP(strstr, ntoskrnl_strstr, 0),
4080 IMPORT_CFUNC_MAP(strncat, ntoskrnl_strncat, 0),
4081 IMPORT_CFUNC_MAP(strchr, index, 0),
4082 IMPORT_CFUNC_MAP(strrchr, rindex, 0),
4083 IMPORT_CFUNC(memcpy, 0),
4084 IMPORT_CFUNC_MAP(memmove, ntoskrnl_memmove, 0),
4085 IMPORT_CFUNC_MAP(memset, ntoskrnl_memset, 0),
4086 IMPORT_CFUNC_MAP(memchr, ntoskrnl_memchr, 0),
4087 IMPORT_SFUNC(IoAllocateDriverObjectExtension, 4),
4088 IMPORT_SFUNC(IoGetDriverObjectExtension, 2),
4089 IMPORT_FFUNC(IofCallDriver, 2),
4090 IMPORT_FFUNC(IofCompleteRequest, 2),
4091 IMPORT_SFUNC(IoAcquireCancelSpinLock, 1),
4092 IMPORT_SFUNC(IoReleaseCancelSpinLock, 1),
4093 IMPORT_SFUNC(IoCancelIrp, 1),
4094 IMPORT_SFUNC(IoConnectInterrupt, 11),
4095 IMPORT_SFUNC(IoDisconnectInterrupt, 1),
4096 IMPORT_SFUNC(IoCreateDevice, 7),
4097 IMPORT_SFUNC(IoDeleteDevice, 1),
4098 IMPORT_SFUNC(IoGetAttachedDevice, 1),
4099 IMPORT_SFUNC(IoAttachDeviceToDeviceStack, 2),
4100 IMPORT_SFUNC(IoDetachDevice, 1),
4101 IMPORT_SFUNC(IoBuildSynchronousFsdRequest, 7),
4102 IMPORT_SFUNC(IoBuildAsynchronousFsdRequest, 6),
4103 IMPORT_SFUNC(IoBuildDeviceIoControlRequest, 9),
4104 IMPORT_SFUNC(IoAllocateIrp, 2),
4105 IMPORT_SFUNC(IoReuseIrp, 2),
4106 IMPORT_SFUNC(IoMakeAssociatedIrp, 2),
4107 IMPORT_SFUNC(IoFreeIrp, 1),
4108 IMPORT_SFUNC(IoInitializeIrp, 3),
4109 IMPORT_SFUNC(KeAcquireInterruptSpinLock, 1),
4110 IMPORT_SFUNC(KeReleaseInterruptSpinLock, 2),
4111 IMPORT_SFUNC(KeSynchronizeExecution, 3),
4112 IMPORT_SFUNC(KeWaitForSingleObject, 5),
4113 IMPORT_SFUNC(KeWaitForMultipleObjects, 8),
4114 IMPORT_SFUNC(_allmul, 4),
4115 IMPORT_SFUNC(_alldiv, 4),
4116 IMPORT_SFUNC(_allrem, 4),
4117 IMPORT_RFUNC(_allshr, 0),
4118 IMPORT_RFUNC(_allshl, 0),
4119 IMPORT_SFUNC(_aullmul, 4),
4120 IMPORT_SFUNC(_aulldiv, 4),
4121 IMPORT_SFUNC(_aullrem, 4),
4122 IMPORT_RFUNC(_aullshr, 0),
4123 IMPORT_RFUNC(_aullshl, 0),
4124 IMPORT_CFUNC(atoi, 0),
4125 IMPORT_CFUNC(atol, 0),
4126 IMPORT_CFUNC(rand, 0),
4127 IMPORT_CFUNC(srand, 0),
4128 IMPORT_SFUNC(WRITE_REGISTER_USHORT, 2),
4129 IMPORT_SFUNC(READ_REGISTER_USHORT, 1),
4130 IMPORT_SFUNC(WRITE_REGISTER_ULONG, 2),
4131 IMPORT_SFUNC(READ_REGISTER_ULONG, 1),
4132 IMPORT_SFUNC(READ_REGISTER_UCHAR, 1),
4133 IMPORT_SFUNC(WRITE_REGISTER_UCHAR, 2),
4134 IMPORT_SFUNC(ExInitializePagedLookasideList, 7),
4135 IMPORT_SFUNC(ExDeletePagedLookasideList, 1),
4136 IMPORT_SFUNC(ExInitializeNPagedLookasideList, 7),
4137 IMPORT_SFUNC(ExDeleteNPagedLookasideList, 1),
4138 IMPORT_FFUNC(InterlockedPopEntrySList, 1),
4139 IMPORT_FFUNC(InitializeSListHead, 1),
4140 IMPORT_FFUNC(InterlockedPushEntrySList, 2),
4141 IMPORT_SFUNC(ExQueryDepthSList, 1),
4142 IMPORT_FFUNC_MAP(ExpInterlockedPopEntrySList,
4143 InterlockedPopEntrySList, 1),
4144 IMPORT_FFUNC_MAP(ExpInterlockedPushEntrySList,
4145 InterlockedPushEntrySList, 2),
4146 IMPORT_FFUNC(ExInterlockedPopEntrySList, 2),
4147 IMPORT_FFUNC(ExInterlockedPushEntrySList, 3),
4148 IMPORT_SFUNC(ExAllocatePoolWithTag, 3),
4149 IMPORT_SFUNC(ExFreePoolWithTag, 2),
4150 IMPORT_SFUNC(ExFreePool, 1),
4152 IMPORT_FFUNC(KefAcquireSpinLockAtDpcLevel, 1),
4153 IMPORT_FFUNC(KefReleaseSpinLockFromDpcLevel,1),
4154 IMPORT_FFUNC(KeAcquireSpinLockRaiseToDpc, 1),
4157 * For AMD64, we can get away with just mapping
4158 * KeAcquireSpinLockRaiseToDpc() directly to KfAcquireSpinLock()
4159 * because the calling conventions end up being the same.
4160 * On i386, we have to be careful because KfAcquireSpinLock()
4161 * is _fastcall but KeAcquireSpinLockRaiseToDpc() isn't.
4163 IMPORT_SFUNC(KeAcquireSpinLockAtDpcLevel, 1),
4164 IMPORT_SFUNC(KeReleaseSpinLockFromDpcLevel, 1),
4165 IMPORT_SFUNC_MAP(KeAcquireSpinLockRaiseToDpc, KfAcquireSpinLock, 1),
4167 IMPORT_SFUNC_MAP(KeReleaseSpinLock, KfReleaseSpinLock, 1),
4168 IMPORT_FFUNC(InterlockedIncrement, 1),
4169 IMPORT_FFUNC(InterlockedDecrement, 1),
4170 IMPORT_FFUNC(InterlockedExchange, 2),
4171 IMPORT_FFUNC(ExInterlockedAddLargeStatistic, 2),
4172 IMPORT_SFUNC(IoAllocateMdl, 5),
4173 IMPORT_SFUNC(IoFreeMdl, 1),
4174 IMPORT_SFUNC(MmAllocateContiguousMemory, 2 + 1),
4175 IMPORT_SFUNC(MmAllocateContiguousMemorySpecifyCache, 5 + 3),
4176 IMPORT_SFUNC(MmFreeContiguousMemory, 1),
4177 IMPORT_SFUNC(MmFreeContiguousMemorySpecifyCache, 3),
4178 IMPORT_SFUNC(MmSizeOfMdl, 1),
4179 IMPORT_SFUNC(MmMapLockedPages, 2),
4180 IMPORT_SFUNC(MmMapLockedPagesSpecifyCache, 6),
4181 IMPORT_SFUNC(MmUnmapLockedPages, 2),
4182 IMPORT_SFUNC(MmBuildMdlForNonPagedPool, 1),
4183 IMPORT_SFUNC(MmGetPhysicalAddress, 1),
4184 IMPORT_SFUNC(MmGetSystemRoutineAddress, 1),
4185 IMPORT_SFUNC(MmIsAddressValid, 1),
4186 IMPORT_SFUNC(MmMapIoSpace, 3 + 1),
4187 IMPORT_SFUNC(MmUnmapIoSpace, 2),
4188 IMPORT_SFUNC(KeInitializeSpinLock, 1),
4189 IMPORT_SFUNC(IoIsWdmVersionAvailable, 2),
4190 IMPORT_SFUNC(IoOpenDeviceRegistryKey, 4),
4191 IMPORT_SFUNC(IoGetDeviceObjectPointer, 4),
4192 IMPORT_SFUNC(IoGetDeviceProperty, 5),
4193 IMPORT_SFUNC(IoAllocateWorkItem, 1),
4194 IMPORT_SFUNC(IoFreeWorkItem, 1),
4195 IMPORT_SFUNC(IoQueueWorkItem, 4),
4196 IMPORT_SFUNC(ExQueueWorkItem, 2),
4197 IMPORT_SFUNC(ntoskrnl_workitem, 2),
4198 IMPORT_SFUNC(KeInitializeMutex, 2),
4199 IMPORT_SFUNC(KeReleaseMutex, 2),
4200 IMPORT_SFUNC(KeReadStateMutex, 1),
4201 IMPORT_SFUNC(KeInitializeEvent, 3),
4202 IMPORT_SFUNC(KeSetEvent, 3),
4203 IMPORT_SFUNC(KeResetEvent, 1),
4204 IMPORT_SFUNC(KeClearEvent, 1),
4205 IMPORT_SFUNC(KeReadStateEvent, 1),
4206 IMPORT_SFUNC(KeInitializeTimer, 1),
4207 IMPORT_SFUNC(KeInitializeTimerEx, 2),
4208 IMPORT_SFUNC(KeSetTimer, 3),
4209 IMPORT_SFUNC(KeSetTimerEx, 4),
4210 IMPORT_SFUNC(KeCancelTimer, 1),
4211 IMPORT_SFUNC(KeReadStateTimer, 1),
4212 IMPORT_SFUNC(KeInitializeDpc, 3),
4213 IMPORT_SFUNC(KeInsertQueueDpc, 3),
4214 IMPORT_SFUNC(KeRemoveQueueDpc, 1),
4215 IMPORT_SFUNC(KeSetImportanceDpc, 2),
4216 IMPORT_SFUNC(KeSetTargetProcessorDpc, 2),
4217 IMPORT_SFUNC(KeFlushQueuedDpcs, 0),
4218 IMPORT_SFUNC(KeGetCurrentProcessorNumber, 1),
4219 IMPORT_SFUNC(ObReferenceObjectByHandle, 6),
4220 IMPORT_FFUNC(ObfDereferenceObject, 1),
4221 IMPORT_SFUNC(ZwClose, 1),
4222 IMPORT_SFUNC(PsCreateSystemThread, 7),
4223 IMPORT_SFUNC(PsTerminateSystemThread, 1),
4224 IMPORT_SFUNC(IoWMIRegistrationControl, 2),
4225 IMPORT_SFUNC(WmiQueryTraceInformation, 5),
4226 IMPORT_CFUNC(WmiTraceMessage, 0),
4227 IMPORT_SFUNC(KeQuerySystemTime, 1),
4228 IMPORT_CFUNC(KeTickCount, 0),
4229 IMPORT_SFUNC(KeDelayExecutionThread, 3),
4230 IMPORT_SFUNC(KeQueryInterruptTime, 0),
4231 IMPORT_SFUNC(KeGetCurrentThread, 0),
4232 IMPORT_SFUNC(KeSetPriorityThread, 2),
4235 * This last entry is a catch-all for any function we haven't
4236 * implemented yet. The PE import list patching routine will
4237 * use it for any function that doesn't have an explicit match
4241 { NULL, (FUNC)dummy, NULL, 0, WINDRV_WRAP_STDCALL },
4245 { NULL, NULL, NULL }