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freebsd-skq/sys/compat/ndis/subr_ntoskrnl.c
Yoshihiro Takahashi d4fcf3cba5 Remove bus_{mem,p}io.h and related code for a micro-optimization on i386 
and amd64.  The optimization is a trivial on recent machines.

Reviewed by:	-arch (imp, marcel, dfr)
2005-05-29 04:42:30 +00:00

3441 lines
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/*-
* Copyright (c) 2003
* Bill Paul <wpaul@windriver.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/ctype.h>
#include <sys/unistd.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/callout.h>
#if __FreeBSD_version > 502113
#include <sys/kdb.h>
#endif
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/kthread.h>
#include <sys/module.h>
#include <sys/smp.h>
#include <sys/sched.h>
#include <machine/atomic.h>
#include <machine/clock.h>
#include <machine/bus.h>
#include <machine/stdarg.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <vm/uma.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <compat/ndis/pe_var.h>
#include <compat/ndis/cfg_var.h>
#include <compat/ndis/resource_var.h>
#include <compat/ndis/ntoskrnl_var.h>
#include <compat/ndis/hal_var.h>
#include <compat/ndis/ndis_var.h>
struct kdpc_queue {
list_entry kq_high;
list_entry kq_low;
list_entry kq_med;
struct thread *kq_td;
int kq_state;
int kq_cpu;
int kq_exit;
struct mtx kq_lock;
nt_kevent kq_proc;
nt_kevent kq_done;
nt_kevent kq_dead;
};
typedef struct kdpc_queue kdpc_queue;
static uint8_t RtlEqualUnicodeString(ndis_unicode_string *,
ndis_unicode_string *, uint8_t);
static void RtlCopyUnicodeString(ndis_unicode_string *,
ndis_unicode_string *);
static ndis_status RtlUnicodeStringToAnsiString(ndis_ansi_string *,
ndis_unicode_string *, uint8_t);
static ndis_status RtlAnsiStringToUnicodeString(ndis_unicode_string *,
ndis_ansi_string *, uint8_t);
static irp *IoBuildSynchronousFsdRequest(uint32_t, device_object *,
void *, uint32_t, uint64_t *, nt_kevent *, io_status_block *);
static irp *IoBuildAsynchronousFsdRequest(uint32_t,
device_object *, void *, uint32_t, uint64_t *, io_status_block *);
static irp *IoBuildDeviceIoControlRequest(uint32_t,
device_object *, void *, uint32_t, void *, uint32_t,
uint8_t, nt_kevent *, io_status_block *);
static irp *IoAllocateIrp(uint8_t, uint8_t);
static void IoReuseIrp(irp *, uint32_t);
static void IoFreeIrp(irp *);
static void IoInitializeIrp(irp *, uint16_t, uint8_t);
static irp *IoMakeAssociatedIrp(irp *, uint8_t);
static uint32_t KeWaitForMultipleObjects(uint32_t,
nt_dispatch_header **, uint32_t, uint32_t, uint32_t, uint8_t,
int64_t *, wait_block *);
static void ntoskrnl_wakeup(void *);
static void ntoskrnl_timercall(void *);
static void ntoskrnl_run_dpc(void *);
static void ntoskrnl_dpc_thread(void *);
static void ntoskrnl_destroy_dpc_threads(void);
static void ntoskrnl_destroy_workitem_threads(void);
static void ntoskrnl_workitem_thread(void *);
static void ntoskrnl_workitem(device_object *, void *);
static uint8_t ntoskrnl_insert_dpc(list_entry *, kdpc *);
static void WRITE_REGISTER_USHORT(uint16_t *, uint16_t);
static uint16_t READ_REGISTER_USHORT(uint16_t *);
static void WRITE_REGISTER_ULONG(uint32_t *, uint32_t);
static uint32_t READ_REGISTER_ULONG(uint32_t *);
static void WRITE_REGISTER_UCHAR(uint8_t *, uint8_t);
static uint8_t READ_REGISTER_UCHAR(uint8_t *);
static int64_t _allmul(int64_t, int64_t);
static int64_t _alldiv(int64_t, int64_t);
static int64_t _allrem(int64_t, int64_t);
static int64_t _allshr(int64_t, uint8_t);
static int64_t _allshl(int64_t, uint8_t);
static uint64_t _aullmul(uint64_t, uint64_t);
static uint64_t _aulldiv(uint64_t, uint64_t);
static uint64_t _aullrem(uint64_t, uint64_t);
static uint64_t _aullshr(uint64_t, uint8_t);
static uint64_t _aullshl(uint64_t, uint8_t);
static slist_entry *ntoskrnl_pushsl(slist_header *, slist_entry *);
static slist_entry *ntoskrnl_popsl(slist_header *);
static void ExInitializePagedLookasideList(paged_lookaside_list *,
lookaside_alloc_func *, lookaside_free_func *,
uint32_t, size_t, uint32_t, uint16_t);
static void ExDeletePagedLookasideList(paged_lookaside_list *);
static void ExInitializeNPagedLookasideList(npaged_lookaside_list *,
lookaside_alloc_func *, lookaside_free_func *,
uint32_t, size_t, uint32_t, uint16_t);
static void ExDeleteNPagedLookasideList(npaged_lookaside_list *);
static slist_entry
*InterlockedPushEntrySList(slist_header *, slist_entry *);
static slist_entry *InterlockedPopEntrySList(slist_header *);
static slist_entry
*ExInterlockedPushEntrySList(slist_header *,
slist_entry *, kspin_lock *);
static slist_entry
*ExInterlockedPopEntrySList(slist_header *, kspin_lock *);
static uint16_t ExQueryDepthSList(slist_header *);
static uint32_t InterlockedIncrement(volatile uint32_t *);
static uint32_t InterlockedDecrement(volatile uint32_t *);
static void ExInterlockedAddLargeStatistic(uint64_t *, uint32_t);
static uint32_t MmSizeOfMdl(void *, size_t);
static void MmBuildMdlForNonPagedPool(mdl *);
static void *MmMapLockedPages(mdl *, uint8_t);
static void *MmMapLockedPagesSpecifyCache(mdl *,
uint8_t, uint32_t, void *, uint32_t, uint32_t);
static void MmUnmapLockedPages(void *, mdl *);
static uint8_t MmIsAddressValid(void *);
static size_t RtlCompareMemory(const void *, const void *, size_t);
static void RtlInitAnsiString(ndis_ansi_string *, char *);
static void RtlInitUnicodeString(ndis_unicode_string *,
uint16_t *);
static void RtlFreeUnicodeString(ndis_unicode_string *);
static void RtlFreeAnsiString(ndis_ansi_string *);
static ndis_status RtlUnicodeStringToInteger(ndis_unicode_string *,
uint32_t, uint32_t *);
static int atoi (const char *);
static long atol (const char *);
static int rand(void);
static void srand(unsigned int);
static void ntoskrnl_time(uint64_t *);
static uint8_t IoIsWdmVersionAvailable(uint8_t, uint8_t);
static void ntoskrnl_thrfunc(void *);
static ndis_status PsCreateSystemThread(ndis_handle *,
uint32_t, void *, ndis_handle, void *, void *, void *);
static ndis_status PsTerminateSystemThread(ndis_status);
static ndis_status IoGetDeviceProperty(device_object *, uint32_t,
uint32_t, void *, uint32_t *);
static void KeInitializeMutex(kmutant *, uint32_t);
static uint32_t KeReleaseMutex(kmutant *, uint8_t);
static uint32_t KeReadStateMutex(kmutant *);
static ndis_status ObReferenceObjectByHandle(ndis_handle,
uint32_t, void *, uint8_t, void **, void **);
static void ObfDereferenceObject(void *);
static uint32_t ZwClose(ndis_handle);
static void *ntoskrnl_memset(void *, int, size_t);
static char *ntoskrnl_strstr(char *, char *);
static funcptr ntoskrnl_findwrap(funcptr);
static uint32_t DbgPrint(char *, ...);
static void DbgBreakPoint(void);
static void dummy(void);
static struct mtx ntoskrnl_dispatchlock;
static kspin_lock ntoskrnl_global;
static kspin_lock ntoskrnl_cancellock;
static int ntoskrnl_kth = 0;
static struct nt_objref_head ntoskrnl_reflist;
static uma_zone_t mdl_zone;
static uma_zone_t iw_zone;
static struct kdpc_queue *kq_queues;
static struct kdpc_queue *wq_queues;
static int wq_idx = 0;
int
ntoskrnl_libinit()
{
image_patch_table *patch;
int error;
struct proc *p;
kdpc_queue *kq;
int i;
char name[64];
mtx_init(&ntoskrnl_dispatchlock,
"ntoskrnl dispatch lock", MTX_NDIS_LOCK, MTX_DEF|MTX_RECURSE);
KeInitializeSpinLock(&ntoskrnl_global);
KeInitializeSpinLock(&ntoskrnl_cancellock);
TAILQ_INIT(&ntoskrnl_reflist);
kq_queues = ExAllocatePoolWithTag(NonPagedPool,
sizeof(kdpc_queue) * mp_ncpus, 0);
if (kq_queues == NULL)
return(ENOMEM);
wq_queues = ExAllocatePoolWithTag(NonPagedPool,
sizeof(kdpc_queue) * WORKITEM_THREADS, 0);
if (wq_queues == NULL)
return(ENOMEM);
bzero((char *)kq_queues, sizeof(kdpc_queue) * mp_ncpus);
bzero((char *)wq_queues, sizeof(kdpc_queue) * WORKITEM_THREADS);
/*
* Launch the DPC threads.
*/
for (i = 0; i < mp_ncpus; i++) {
kq = kq_queues + i;
kq->kq_cpu = i;
sprintf(name, "Windows DPC %d", i);
error = kthread_create(ntoskrnl_dpc_thread, kq, &p,
RFHIGHPID, NDIS_KSTACK_PAGES, name);
if (error)
panic("failed to launch DPC thread");
}
/*
* Launch the workitem threads.
*/
for (i = 0; i < WORKITEM_THREADS; i++) {
kq = wq_queues + i;
sprintf(name, "Windows Workitem %d", i);
error = kthread_create(ntoskrnl_workitem_thread, kq, &p,
RFHIGHPID, NDIS_KSTACK_PAGES, name);
if (error)
panic("failed to launch workitem thread");
}
patch = ntoskrnl_functbl;
while (patch->ipt_func != NULL) {
windrv_wrap((funcptr)patch->ipt_func,
(funcptr *)&patch->ipt_wrap,
patch->ipt_argcnt, patch->ipt_ftype);
patch++;
}
/*
* MDLs are supposed to be variable size (they describe
* buffers containing some number of pages, but we don't
* know ahead of time how many pages that will be). But
* always allocating them off the heap is very slow. As
* a compromise, we create an MDL UMA zone big enough to
* handle any buffer requiring up to 16 pages, and we
* use those for any MDLs for buffers of 16 pages or less
* in size. For buffers larger than that (which we assume
* will be few and far between, we allocate the MDLs off
* the heap.
*/
mdl_zone = uma_zcreate("Windows MDL", MDL_ZONE_SIZE,
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
iw_zone = uma_zcreate("Windows WorkItem", sizeof(io_workitem),
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
return(0);
}
int
ntoskrnl_libfini()
{
image_patch_table *patch;
patch = ntoskrnl_functbl;
while (patch->ipt_func != NULL) {
windrv_unwrap(patch->ipt_wrap);
patch++;
}
/* Stop the DPC queues. */
ntoskrnl_destroy_dpc_threads();
/* Stop the workitem queues. */
ntoskrnl_destroy_workitem_threads();
ExFreePool(kq_queues);
ExFreePool(wq_queues);
uma_zdestroy(mdl_zone);
uma_zdestroy(iw_zone);
mtx_destroy(&ntoskrnl_dispatchlock);
return(0);
}
/*
* We need to be able to reference this externally from the wrapper;
* GCC only generates a local implementation of memset.
*/
static void *
ntoskrnl_memset(buf, ch, size)
void *buf;
int ch;
size_t size;
{
return(memset(buf, ch, size));
}
static char *
ntoskrnl_strstr(s, find)
char *s, *find;
{
char c, sc;
size_t len;
if ((c = *find++) != 0) {
len = strlen(find);
do {
do {
if ((sc = *s++) == 0)
return (NULL);
} while (sc != c);
} while (strncmp(s, find, len) != 0);
s--;
}
return ((char *)s);
}
static uint8_t
RtlEqualUnicodeString(str1, str2, caseinsensitive)
ndis_unicode_string *str1;
ndis_unicode_string *str2;
uint8_t caseinsensitive;
{
int i;
if (str1->us_len != str2->us_len)
return(FALSE);
for (i = 0; i < str1->us_len; i++) {
if (caseinsensitive == TRUE) {
if (toupper((char)(str1->us_buf[i] & 0xFF)) !=
toupper((char)(str2->us_buf[i] & 0xFF)))
return(FALSE);
} else {
if (str1->us_buf[i] != str2->us_buf[i])
return(FALSE);
}
}
return(TRUE);
}
static void
RtlCopyUnicodeString(dest, src)
ndis_unicode_string *dest;
ndis_unicode_string *src;
{
if (dest->us_maxlen >= src->us_len)
dest->us_len = src->us_len;
else
dest->us_len = dest->us_maxlen;
memcpy(dest->us_buf, src->us_buf, dest->us_len);
return;
}
static ndis_status
RtlUnicodeStringToAnsiString(dest, src, allocate)
ndis_ansi_string *dest;
ndis_unicode_string *src;
uint8_t allocate;
{
char *astr = NULL;
if (dest == NULL || src == NULL)
return(NDIS_STATUS_FAILURE);
if (allocate == TRUE) {
if (ndis_unicode_to_ascii(src->us_buf, src->us_len, &astr))
return(NDIS_STATUS_FAILURE);
dest->nas_buf = astr;
dest->nas_len = dest->nas_maxlen = strlen(astr);
} else {
dest->nas_len = src->us_len / 2; /* XXX */
if (dest->nas_maxlen < dest->nas_len)
dest->nas_len = dest->nas_maxlen;
ndis_unicode_to_ascii(src->us_buf, dest->nas_len * 2,
&dest->nas_buf);
}
return (NDIS_STATUS_SUCCESS);
}
static ndis_status
RtlAnsiStringToUnicodeString(dest, src, allocate)
ndis_unicode_string *dest;
ndis_ansi_string *src;
uint8_t allocate;
{
uint16_t *ustr = NULL;
if (dest == NULL || src == NULL)
return(NDIS_STATUS_FAILURE);
if (allocate == TRUE) {
if (ndis_ascii_to_unicode(src->nas_buf, &ustr))
return(NDIS_STATUS_FAILURE);
dest->us_buf = ustr;
dest->us_len = dest->us_maxlen = strlen(src->nas_buf) * 2;
} else {
dest->us_len = src->nas_len * 2; /* XXX */
if (dest->us_maxlen < dest->us_len)
dest->us_len = dest->us_maxlen;
ndis_ascii_to_unicode(src->nas_buf, &dest->us_buf);
}
return (NDIS_STATUS_SUCCESS);
}
void *
ExAllocatePoolWithTag(pooltype, len, tag)
uint32_t pooltype;
size_t len;
uint32_t tag;
{
void *buf;
buf = malloc(len, M_DEVBUF, M_NOWAIT);
if (buf == NULL)
return(NULL);
return(buf);
}
void
ExFreePool(buf)
void *buf;
{
free(buf, M_DEVBUF);
return;
}
uint32_t
IoAllocateDriverObjectExtension(drv, clid, extlen, ext)
driver_object *drv;
void *clid;
uint32_t extlen;
void **ext;
{
custom_extension *ce;
ce = ExAllocatePoolWithTag(NonPagedPool, sizeof(custom_extension)
+ extlen, 0);
if (ce == NULL)
return(STATUS_INSUFFICIENT_RESOURCES);
ce->ce_clid = clid;
INSERT_LIST_TAIL((&drv->dro_driverext->dre_usrext), (&ce->ce_list));
*ext = (void *)(ce + 1);
return(STATUS_SUCCESS);
}
void *
IoGetDriverObjectExtension(drv, clid)
driver_object *drv;
void *clid;
{
list_entry *e;
custom_extension *ce;
/*
* Sanity check. Our dummy bus drivers don't have
* any driver extentions.
*/
if (drv->dro_driverext == NULL)
return(NULL);
e = drv->dro_driverext->dre_usrext.nle_flink;
while (e != &drv->dro_driverext->dre_usrext) {
ce = (custom_extension *)e;
if (ce->ce_clid == clid)
return((void *)(ce + 1));
e = e->nle_flink;
}
return(NULL);
}
uint32_t
IoCreateDevice(drv, devextlen, devname, devtype, devchars, exclusive, newdev)
driver_object *drv;
uint32_t devextlen;
unicode_string *devname;
uint32_t devtype;
uint32_t devchars;
uint8_t exclusive;
device_object **newdev;
{
device_object *dev;
dev = ExAllocatePoolWithTag(NonPagedPool, sizeof(device_object), 0);
if (dev == NULL)
return(STATUS_INSUFFICIENT_RESOURCES);
dev->do_type = devtype;
dev->do_drvobj = drv;
dev->do_currirp = NULL;
dev->do_flags = 0;
if (devextlen) {
dev->do_devext = ExAllocatePoolWithTag(NonPagedPool,
devextlen, 0);
if (dev->do_devext == NULL) {
ExFreePool(dev);
return(STATUS_INSUFFICIENT_RESOURCES);
}
bzero(dev->do_devext, devextlen);
} else
dev->do_devext = NULL;
dev->do_size = sizeof(device_object) + devextlen;
dev->do_refcnt = 1;
dev->do_attacheddev = NULL;
dev->do_nextdev = NULL;
dev->do_devtype = devtype;
dev->do_stacksize = 1;
dev->do_alignreq = 1;
dev->do_characteristics = devchars;
dev->do_iotimer = NULL;
KeInitializeEvent(&dev->do_devlock, EVENT_TYPE_SYNC, TRUE);
/*
* Vpd is used for disk/tape devices,
* but we don't support those. (Yet.)
*/
dev->do_vpb = NULL;
dev->do_devobj_ext = ExAllocatePoolWithTag(NonPagedPool,
sizeof(devobj_extension), 0);
if (dev->do_devobj_ext == NULL) {
if (dev->do_devext != NULL)
ExFreePool(dev->do_devext);
ExFreePool(dev);
return(STATUS_INSUFFICIENT_RESOURCES);
}
dev->do_devobj_ext->dve_type = 0;
dev->do_devobj_ext->dve_size = sizeof(devobj_extension);
dev->do_devobj_ext->dve_devobj = dev;
/*
* Attach this device to the driver object's list
* of devices. Note: this is not the same as attaching
* the device to the device stack. The driver's AddDevice
* routine must explicitly call IoAddDeviceToDeviceStack()
* to do that.
*/
if (drv->dro_devobj == NULL) {
drv->dro_devobj = dev;
dev->do_nextdev = NULL;
} else {
dev->do_nextdev = drv->dro_devobj;
drv->dro_devobj = dev;
}
*newdev = dev;
return(STATUS_SUCCESS);
}
void
IoDeleteDevice(dev)
device_object *dev;
{
device_object *prev;
if (dev == NULL)
return;
if (dev->do_devobj_ext != NULL)
ExFreePool(dev->do_devobj_ext);
if (dev->do_devext != NULL)
ExFreePool(dev->do_devext);
/* Unlink the device from the driver's device list. */
prev = dev->do_drvobj->dro_devobj;
if (prev == dev)
dev->do_drvobj->dro_devobj = dev->do_nextdev;
else {
while (prev->do_nextdev != dev)
prev = prev->do_nextdev;
prev->do_nextdev = dev->do_nextdev;
}
ExFreePool(dev);
return;
}
device_object *
IoGetAttachedDevice(dev)
device_object *dev;
{
device_object *d;
if (dev == NULL)
return (NULL);
d = dev;
while (d->do_attacheddev != NULL)
d = d->do_attacheddev;
return (d);
}
static irp *
IoBuildSynchronousFsdRequest(func, dobj, buf, len, off, event, status)
uint32_t func;
device_object *dobj;
void *buf;
uint32_t len;
uint64_t *off;
nt_kevent *event;
io_status_block *status;
{
irp *ip;
ip = IoBuildAsynchronousFsdRequest(func, dobj, buf, len, off, status);
if (ip == NULL)
return(NULL);
ip->irp_usrevent = event;
return(ip);
}
static irp *
IoBuildAsynchronousFsdRequest(func, dobj, buf, len, off, status)
uint32_t func;
device_object *dobj;
void *buf;
uint32_t len;
uint64_t *off;
io_status_block *status;
{
irp *ip;
io_stack_location *sl;
ip = IoAllocateIrp(dobj->do_stacksize, TRUE);
if (ip == NULL)
return(NULL);
ip->irp_usriostat = status;
ip->irp_tail.irp_overlay.irp_thread = NULL;
sl = IoGetNextIrpStackLocation(ip);
sl->isl_major = func;
sl->isl_minor = 0;
sl->isl_flags = 0;
sl->isl_ctl = 0;
sl->isl_devobj = dobj;
sl->isl_fileobj = NULL;
sl->isl_completionfunc = NULL;
ip->irp_userbuf = buf;
if (dobj->do_flags & DO_BUFFERED_IO) {
ip->irp_assoc.irp_sysbuf =
ExAllocatePoolWithTag(NonPagedPool, len, 0);
if (ip->irp_assoc.irp_sysbuf == NULL) {
IoFreeIrp(ip);
return(NULL);
}
bcopy(buf, ip->irp_assoc.irp_sysbuf, len);
}
if (dobj->do_flags & DO_DIRECT_IO) {
ip->irp_mdl = IoAllocateMdl(buf, len, FALSE, FALSE, ip);
if (ip->irp_mdl == NULL) {
if (ip->irp_assoc.irp_sysbuf != NULL)
ExFreePool(ip->irp_assoc.irp_sysbuf);
IoFreeIrp(ip);
return(NULL);
}
ip->irp_userbuf = NULL;
ip->irp_assoc.irp_sysbuf = NULL;
}
if (func == IRP_MJ_READ) {
sl->isl_parameters.isl_read.isl_len = len;
if (off != NULL)
sl->isl_parameters.isl_read.isl_byteoff = *off;
else
sl->isl_parameters.isl_read.isl_byteoff = 0;
}
if (func == IRP_MJ_WRITE) {
sl->isl_parameters.isl_write.isl_len = len;
if (off != NULL)
sl->isl_parameters.isl_write.isl_byteoff = *off;
else
sl->isl_parameters.isl_write.isl_byteoff = 0;
}
return(ip);
}
static irp *
IoBuildDeviceIoControlRequest(iocode, dobj, ibuf, ilen, obuf, olen,
isinternal, event, status)
uint32_t iocode;
device_object *dobj;
void *ibuf;
uint32_t ilen;
void *obuf;
uint32_t olen;
uint8_t isinternal;
nt_kevent *event;
io_status_block *status;
{
irp *ip;
io_stack_location *sl;
uint32_t buflen;
ip = IoAllocateIrp(dobj->do_stacksize, TRUE);
if (ip == NULL)
return(NULL);
ip->irp_usrevent = event;
ip->irp_usriostat = status;
ip->irp_tail.irp_overlay.irp_thread = NULL;
sl = IoGetNextIrpStackLocation(ip);
sl->isl_major = isinternal == TRUE ?
IRP_MJ_INTERNAL_DEVICE_CONTROL : IRP_MJ_DEVICE_CONTROL;
sl->isl_minor = 0;
sl->isl_flags = 0;
sl->isl_ctl = 0;
sl->isl_devobj = dobj;
sl->isl_fileobj = NULL;
sl->isl_completionfunc = NULL;
sl->isl_parameters.isl_ioctl.isl_iocode = iocode;
sl->isl_parameters.isl_ioctl.isl_ibuflen = ilen;
sl->isl_parameters.isl_ioctl.isl_obuflen = olen;
switch(IO_METHOD(iocode)) {
case METHOD_BUFFERED:
if (ilen > olen)
buflen = ilen;
else
buflen = olen;
if (buflen) {
ip->irp_assoc.irp_sysbuf =
ExAllocatePoolWithTag(NonPagedPool, buflen, 0);
if (ip->irp_assoc.irp_sysbuf == NULL) {
IoFreeIrp(ip);
return(NULL);
}
}
if (ilen && ibuf != NULL) {
bcopy(ibuf, ip->irp_assoc.irp_sysbuf, ilen);
bzero((char *)ip->irp_assoc.irp_sysbuf + ilen,
buflen - ilen);
} else
bzero(ip->irp_assoc.irp_sysbuf, ilen);
ip->irp_userbuf = obuf;
break;
case METHOD_IN_DIRECT:
case METHOD_OUT_DIRECT:
if (ilen && ibuf != NULL) {
ip->irp_assoc.irp_sysbuf =
ExAllocatePoolWithTag(NonPagedPool, ilen, 0);
if (ip->irp_assoc.irp_sysbuf == NULL) {
IoFreeIrp(ip);
return(NULL);
}
bcopy(ibuf, ip->irp_assoc.irp_sysbuf, ilen);
}
if (olen && obuf != NULL) {
ip->irp_mdl = IoAllocateMdl(obuf, olen,
FALSE, FALSE, ip);
/*
* Normally we would MmProbeAndLockPages()
* here, but we don't have to in our
* imlementation.
*/
}
break;
case METHOD_NEITHER:
ip->irp_userbuf = obuf;
sl->isl_parameters.isl_ioctl.isl_type3ibuf = ibuf;
break;
default:
break;
}
/*
* Ideally, we should associate this IRP with the calling
* thread here.
*/
return (ip);
}
static irp *
IoAllocateIrp(stsize, chargequota)
uint8_t stsize;
uint8_t chargequota;
{
irp *i;
i = ExAllocatePoolWithTag(NonPagedPool, IoSizeOfIrp(stsize), 0);
if (i == NULL)
return (NULL);
IoInitializeIrp(i, IoSizeOfIrp(stsize), stsize);
return (i);
}
static irp *
IoMakeAssociatedIrp(ip, stsize)
irp *ip;
uint8_t stsize;
{
irp *associrp;
associrp = IoAllocateIrp(stsize, FALSE);
if (associrp == NULL)
return(NULL);
mtx_lock(&ntoskrnl_dispatchlock);
associrp->irp_flags |= IRP_ASSOCIATED_IRP;
associrp->irp_tail.irp_overlay.irp_thread =
ip->irp_tail.irp_overlay.irp_thread;
associrp->irp_assoc.irp_master = ip;
mtx_unlock(&ntoskrnl_dispatchlock);
return(associrp);
}
static void
IoFreeIrp(ip)
irp *ip;
{
ExFreePool(ip);
return;
}
static void
IoInitializeIrp(io, psize, ssize)
irp *io;
uint16_t psize;
uint8_t ssize;
{
bzero((char *)io, IoSizeOfIrp(ssize));
io->irp_size = psize;
io->irp_stackcnt = ssize;
io->irp_currentstackloc = ssize;
INIT_LIST_HEAD(&io->irp_thlist);
io->irp_tail.irp_overlay.irp_csl =
(io_stack_location *)(io + 1) + ssize;
return;
}
static void
IoReuseIrp(ip, status)
irp *ip;
uint32_t status;
{
uint8_t allocflags;
allocflags = ip->irp_allocflags;
IoInitializeIrp(ip, ip->irp_size, ip->irp_stackcnt);
ip->irp_iostat.isb_status = status;
ip->irp_allocflags = allocflags;
return;
}
void
IoAcquireCancelSpinLock(irql)
uint8_t *irql;
{
KeAcquireSpinLock(&ntoskrnl_cancellock, irql);
return;
}
void
IoReleaseCancelSpinLock(irql)
uint8_t irql;
{
KeReleaseSpinLock(&ntoskrnl_cancellock, irql);
return;
}
uint8_t
IoCancelIrp(irp *ip)
{
cancel_func cfunc;
IoAcquireCancelSpinLock(&ip->irp_cancelirql);
cfunc = IoSetCancelRoutine(ip, NULL);
ip->irp_cancel = TRUE;
if (ip->irp_cancelfunc == NULL) {
IoReleaseCancelSpinLock(ip->irp_cancelirql);
return(FALSE);
}
MSCALL2(cfunc, IoGetCurrentIrpStackLocation(ip)->isl_devobj, ip);
return(TRUE);
}
uint32_t
IofCallDriver(dobj, ip)
device_object *dobj;
irp *ip;
{
driver_object *drvobj;
io_stack_location *sl;
uint32_t status;
driver_dispatch disp;
drvobj = dobj->do_drvobj;
if (ip->irp_currentstackloc <= 0)
panic("IoCallDriver(): out of stack locations");
IoSetNextIrpStackLocation(ip);
sl = IoGetCurrentIrpStackLocation(ip);
sl->isl_devobj = dobj;
disp = drvobj->dro_dispatch[sl->isl_major];
status = MSCALL2(disp, dobj, ip);
return(status);
}
void
IofCompleteRequest(ip, prioboost)
irp *ip;
uint8_t prioboost;
{
uint32_t i;
uint32_t status;
device_object *dobj;
io_stack_location *sl;
completion_func cf;
ip->irp_pendingreturned =
IoGetCurrentIrpStackLocation(ip)->isl_ctl & SL_PENDING_RETURNED;
sl = (io_stack_location *)(ip + 1);
for (i = ip->irp_currentstackloc; i < (uint32_t)ip->irp_stackcnt; i++) {
if (ip->irp_currentstackloc < ip->irp_stackcnt - 1) {
IoSkipCurrentIrpStackLocation(ip);
dobj = IoGetCurrentIrpStackLocation(ip)->isl_devobj;
} else
dobj = NULL;
if (sl[i].isl_completionfunc != NULL &&
((ip->irp_iostat.isb_status == STATUS_SUCCESS &&
sl->isl_ctl & SL_INVOKE_ON_SUCCESS) ||
(ip->irp_iostat.isb_status != STATUS_SUCCESS &&
sl->isl_ctl & SL_INVOKE_ON_ERROR) ||
(ip->irp_cancel == TRUE &&
sl->isl_ctl & SL_INVOKE_ON_CANCEL))) {
cf = sl->isl_completionfunc;
status = MSCALL3(cf, dobj, ip, sl->isl_completionctx);
if (status == STATUS_MORE_PROCESSING_REQUIRED)
return;
}
if (IoGetCurrentIrpStackLocation(ip)->isl_ctl &
SL_PENDING_RETURNED)
ip->irp_pendingreturned = TRUE;
}
/* Handle any associated IRPs. */
if (ip->irp_flags & IRP_ASSOCIATED_IRP) {
uint32_t masterirpcnt;
irp *masterirp;
mdl *m;
masterirp = ip->irp_assoc.irp_master;
masterirpcnt =
InterlockedDecrement(&masterirp->irp_assoc.irp_irpcnt);
while ((m = ip->irp_mdl) != NULL) {
ip->irp_mdl = m->mdl_next;
IoFreeMdl(m);
}
IoFreeIrp(ip);
if (masterirpcnt == 0)
IoCompleteRequest(masterirp, IO_NO_INCREMENT);
return;
}
/* With any luck, these conditions will never arise. */
if (ip->irp_flags & (IRP_PAGING_IO|IRP_CLOSE_OPERATION)) {
if (ip->irp_usriostat != NULL)
*ip->irp_usriostat = ip->irp_iostat;
if (ip->irp_usrevent != NULL)
KeSetEvent(ip->irp_usrevent, prioboost, FALSE);
if (ip->irp_flags & IRP_PAGING_IO) {
if (ip->irp_mdl != NULL)
IoFreeMdl(ip->irp_mdl);
IoFreeIrp(ip);
}
}
return;
}
device_object *
IoAttachDeviceToDeviceStack(src, dst)
device_object *src;
device_object *dst;
{
device_object *attached;
mtx_lock(&ntoskrnl_dispatchlock);
attached = IoGetAttachedDevice(dst);
attached->do_attacheddev = src;
src->do_attacheddev = NULL;
src->do_stacksize = attached->do_stacksize + 1;
mtx_unlock(&ntoskrnl_dispatchlock);
return(attached);
}
void
IoDetachDevice(topdev)
device_object *topdev;
{
device_object *tail;
mtx_lock(&ntoskrnl_dispatchlock);
/* First, break the chain. */
tail = topdev->do_attacheddev;
if (tail == NULL) {
mtx_unlock(&ntoskrnl_dispatchlock);
return;
}
topdev->do_attacheddev = tail->do_attacheddev;
topdev->do_refcnt--;
/* Now reduce the stacksize count for the tail objects. */
tail = topdev->do_attacheddev;
while (tail != NULL) {
tail->do_stacksize--;
tail = tail->do_attacheddev;
}
mtx_unlock(&ntoskrnl_dispatchlock);
return;
}
/* Always called with dispatcher lock held. */
static void
ntoskrnl_wakeup(arg)
void *arg;
{
nt_dispatch_header *obj;
wait_block *w;
list_entry *e;
struct thread *td;
obj = arg;
e = obj->dh_waitlisthead.nle_flink;
obj->dh_sigstate = TRUE;
/*
* What happens if someone tells us to wake up
* threads waiting on an object, but nobody's
* waiting on it at the moment? For sync events,
* the signal state is supposed to be automatically
* reset, but this only happens in the KeWaitXXX()
* functions. If nobody is waiting, the state never
* gets cleared.
*/
if (e == &obj->dh_waitlisthead) {
if (obj->dh_type == EVENT_TYPE_SYNC)
obj->dh_sigstate = FALSE;
return;
}
while (e != &obj->dh_waitlisthead) {
w = (wait_block *)e;
td = w->wb_kthread;
ndis_thresume(td->td_proc);
/*
* For synchronization objects, only wake up
* the first waiter.
*/
if (obj->dh_type == EVENT_TYPE_SYNC)
break;
e = e->nle_flink;
}
return;
}
static void
ntoskrnl_time(tval)
uint64_t *tval;
{
struct timespec ts;
nanotime(&ts);
*tval = (uint64_t)ts.tv_nsec / 100 + (uint64_t)ts.tv_sec * 10000000 +
11644473600;
return;
}
/*
* KeWaitForSingleObject() is a tricky beast, because it can be used
* with several different object types: semaphores, timers, events,
* mutexes and threads. Semaphores don't appear very often, but the
* other object types are quite common. KeWaitForSingleObject() is
* what's normally used to acquire a mutex, and it can be used to
* wait for a thread termination.
*
* The Windows NDIS API is implemented in terms of Windows kernel
* primitives, and some of the object manipulation is duplicated in
* NDIS. For example, NDIS has timers and events, which are actually
* Windows kevents and ktimers. Now, you're supposed to only use the
* NDIS variants of these objects within the confines of the NDIS API,
* but there are some naughty developers out there who will use
* KeWaitForSingleObject() on NDIS timer and event objects, so we
* have to support that as well. Conseqently, our NDIS timer and event
* code has to be closely tied into our ntoskrnl timer and event code,
* just as it is in Windows.
*
* KeWaitForSingleObject() may do different things for different kinds
* of objects:
*
* - For events, we check if the event has been signalled. If the
* event is already in the signalled state, we just return immediately,
* otherwise we wait for it to be set to the signalled state by someone
* else calling KeSetEvent(). Events can be either synchronization or
* notification events.
*
* - For timers, if the timer has already fired and the timer is in
* the signalled state, we just return, otherwise we wait on the
* timer. Unlike an event, timers get signalled automatically when
* they expire rather than someone having to trip them manually.
* Timers initialized with KeInitializeTimer() are always notification
* events: KeInitializeTimerEx() lets you initialize a timer as
* either a notification or synchronization event.
*
* - For mutexes, we try to acquire the mutex and if we can't, we wait
* on the mutex until it's available and then grab it. When a mutex is
* released, it enters the signaled state, which wakes up one of the
* threads waiting to acquire it. Mutexes are always synchronization
* events.
*
* - For threads, the only thing we do is wait until the thread object
* enters a signalled state, which occurs when the thread terminates.
* Threads are always notification events.
*
* A notification event wakes up all threads waiting on an object. A
* synchronization event wakes up just one. Also, a synchronization event
* is auto-clearing, which means we automatically set the event back to
* the non-signalled state once the wakeup is done.
*/
uint32_t
KeWaitForSingleObject(obj, reason, mode, alertable, duetime)
nt_dispatch_header *obj;
uint32_t reason;
uint32_t mode;
uint8_t alertable;
int64_t *duetime;
{
struct thread *td = curthread;
kmutant *km;
wait_block w;
struct timeval tv;
int error = 0;
uint64_t curtime;
if (obj == NULL)
return(STATUS_INVALID_PARAMETER);
mtx_lock(&ntoskrnl_dispatchlock);
/*
* See if the object is a mutex. If so, and we already own
* it, then just increment the acquisition count and return.
*
* For any other kind of object, see if it's already in the
* signalled state, and if it is, just return. If the object
* is marked as a synchronization event, reset the state to
* unsignalled.
*/
if (obj->dh_size == OTYPE_MUTEX) {
km = (kmutant *)obj;
if (km->km_ownerthread == NULL ||
km->km_ownerthread == curthread->td_proc) {
obj->dh_sigstate = FALSE;
km->km_acquirecnt++;
km->km_ownerthread = curthread->td_proc;
mtx_unlock(&ntoskrnl_dispatchlock);
return (STATUS_SUCCESS);
}
} else if (obj->dh_sigstate == TRUE) {
if (obj->dh_type == EVENT_TYPE_SYNC)
obj->dh_sigstate = FALSE;
mtx_unlock(&ntoskrnl_dispatchlock);
return (STATUS_SUCCESS);
}
w.wb_object = obj;
w.wb_kthread = td;
INSERT_LIST_TAIL((&obj->dh_waitlisthead), (&w.wb_waitlist));
/*
* The timeout value is specified in 100 nanosecond units
* and can be a positive or negative number. If it's positive,
* then the duetime is absolute, and we need to convert it
* to an absolute offset relative to now in order to use it.
* If it's negative, then the duetime is relative and we
* just have to convert the units.
*/
if (duetime != NULL) {
if (*duetime < 0) {
tv.tv_sec = - (*duetime) / 10000000;
tv.tv_usec = (- (*duetime) / 10) -
(tv.tv_sec * 1000000);
} else {
ntoskrnl_time(&curtime);
if (*duetime < curtime)
tv.tv_sec = tv.tv_usec = 0;
else {
tv.tv_sec = ((*duetime) - curtime) / 10000000;
tv.tv_usec = ((*duetime) - curtime) / 10 -
(tv.tv_sec * 1000000);
}
}
}
error = ndis_thsuspend(td->td_proc, &ntoskrnl_dispatchlock,
duetime == NULL ? 0 : tvtohz(&tv));
/* We timed out. Leave the object alone and return status. */
if (error == EWOULDBLOCK) {
REMOVE_LIST_ENTRY((&w.wb_waitlist));
INIT_LIST_HEAD((&w.wb_waitlist));
mtx_unlock(&ntoskrnl_dispatchlock);
return(STATUS_TIMEOUT);
}
/*
* Mutexes are always synchronization objects, which means
* if several threads are waiting to acquire it, only one will
* be woken up. If that one is us, and the mutex is up for grabs,
* grab it.
*/
if (obj->dh_size == OTYPE_MUTEX) {
km = (kmutant *)obj;
if (km->km_ownerthread == NULL) {
km->km_ownerthread = curthread->td_proc;
km->km_acquirecnt++;
}
}
if (obj->dh_type == EVENT_TYPE_SYNC)
obj->dh_sigstate = FALSE;
REMOVE_LIST_ENTRY((&w.wb_waitlist));
INIT_LIST_HEAD((&w.wb_waitlist));
mtx_unlock(&ntoskrnl_dispatchlock);
return(STATUS_SUCCESS);
}
static uint32_t
KeWaitForMultipleObjects(cnt, obj, wtype, reason, mode,
alertable, duetime, wb_array)
uint32_t cnt;
nt_dispatch_header *obj[];
uint32_t wtype;
uint32_t reason;
uint32_t mode;
uint8_t alertable;
int64_t *duetime;
wait_block *wb_array;
{
struct thread *td = curthread;
kmutant *km;
wait_block _wb_array[THREAD_WAIT_OBJECTS];
wait_block *w;
struct timeval tv;
int i, wcnt = 0, widx = 0, error = 0;
uint64_t curtime;
struct timespec t1, t2;
if (cnt > MAX_WAIT_OBJECTS)
return(STATUS_INVALID_PARAMETER);
if (cnt > THREAD_WAIT_OBJECTS && wb_array == NULL)
return(STATUS_INVALID_PARAMETER);
mtx_lock(&ntoskrnl_dispatchlock);
if (wb_array == NULL)
w = &_wb_array[0];
else
w = wb_array;
/* First pass: see if we can satisfy any waits immediately. */
for (i = 0; i < cnt; i++) {
if (obj[i]->dh_size == OTYPE_MUTEX) {
km = (kmutant *)obj[i];
if (km->km_ownerthread == NULL ||
km->km_ownerthread == curthread->td_proc) {
obj[i]->dh_sigstate = FALSE;
km->km_acquirecnt++;
km->km_ownerthread = curthread->td_proc;
if (wtype == WAITTYPE_ANY) {
mtx_unlock(&ntoskrnl_dispatchlock);
return (STATUS_WAIT_0 + i);
}
}
} else if (obj[i]->dh_sigstate == TRUE) {
if (obj[i]->dh_type == EVENT_TYPE_SYNC)
obj[i]->dh_sigstate = FALSE;
if (wtype == WAITTYPE_ANY) {
mtx_unlock(&ntoskrnl_dispatchlock);
return (STATUS_WAIT_0 + i);
}
}
}
/*
* Second pass: set up wait for anything we can't
* satisfy immediately.
*/
for (i = 0; i < cnt; i++) {
if (obj[i]->dh_sigstate == TRUE)
continue;
INSERT_LIST_TAIL((&obj[i]->dh_waitlisthead),
(&w[i].wb_waitlist));
w[i].wb_kthread = td;
w[i].wb_object = obj[i];
wcnt++;
}
if (duetime != NULL) {
if (*duetime < 0) {
tv.tv_sec = - (*duetime) / 10000000;
tv.tv_usec = (- (*duetime) / 10) -
(tv.tv_sec * 1000000);
} else {
ntoskrnl_time(&curtime);
if (*duetime < curtime)
tv.tv_sec = tv.tv_usec = 0;
else {
tv.tv_sec = ((*duetime) - curtime) / 10000000;
tv.tv_usec = ((*duetime) - curtime) / 10 -
(tv.tv_sec * 1000000);
}
}
}
while (wcnt) {
nanotime(&t1);
error = ndis_thsuspend(td->td_proc, &ntoskrnl_dispatchlock,
duetime == NULL ? 0 : tvtohz(&tv));
nanotime(&t2);
for (i = 0; i < cnt; i++) {
if (obj[i]->dh_size == OTYPE_MUTEX) {
km = (kmutant *)obj;
if (km->km_ownerthread == NULL) {
km->km_ownerthread =
curthread->td_proc;
km->km_acquirecnt++;
}
}
if (obj[i]->dh_sigstate == TRUE) {
widx = i;
if (obj[i]->dh_type == EVENT_TYPE_SYNC)
obj[i]->dh_sigstate = FALSE;
REMOVE_LIST_ENTRY((&w[i].wb_waitlist));
INIT_LIST_HEAD((&w[i].wb_waitlist));
wcnt--;
}
}
if (error || wtype == WAITTYPE_ANY)
break;
if (duetime != NULL) {
tv.tv_sec -= (t2.tv_sec - t1.tv_sec);
tv.tv_usec -= (t2.tv_nsec - t1.tv_nsec) / 1000;
}
}
if (wcnt) {
for (i = 0; i < cnt; i++) {
REMOVE_LIST_ENTRY((&w[i].wb_waitlist));
INIT_LIST_HEAD((&w[i].wb_waitlist));
}
}
if (error == EWOULDBLOCK) {
mtx_unlock(&ntoskrnl_dispatchlock);
return(STATUS_TIMEOUT);
}
if (wtype == WAITTYPE_ANY && wcnt) {
mtx_unlock(&ntoskrnl_dispatchlock);
return(STATUS_WAIT_0 + widx);
}
mtx_unlock(&ntoskrnl_dispatchlock);
return(STATUS_SUCCESS);
}
static void
WRITE_REGISTER_USHORT(reg, val)
uint16_t *reg;
uint16_t val;
{
bus_space_write_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
return;
}
static uint16_t
READ_REGISTER_USHORT(reg)
uint16_t *reg;
{
return(bus_space_read_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
}
static void
WRITE_REGISTER_ULONG(reg, val)
uint32_t *reg;
uint32_t val;
{
bus_space_write_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
return;
}
static uint32_t
READ_REGISTER_ULONG(reg)
uint32_t *reg;
{
return(bus_space_read_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
}
static uint8_t
READ_REGISTER_UCHAR(reg)
uint8_t *reg;
{
return(bus_space_read_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
}
static void
WRITE_REGISTER_UCHAR(reg, val)
uint8_t *reg;
uint8_t val;
{
bus_space_write_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
return;
}
static int64_t
_allmul(a, b)
int64_t a;
int64_t b;
{
return (a * b);
}
static int64_t
_alldiv(a, b)
int64_t a;
int64_t b;
{
return (a / b);
}
static int64_t
_allrem(a, b)
int64_t a;
int64_t b;
{
return (a % b);
}
static uint64_t
_aullmul(a, b)
uint64_t a;
uint64_t b;
{
return (a * b);
}
static uint64_t
_aulldiv(a, b)
uint64_t a;
uint64_t b;
{
return (a / b);
}
static uint64_t
_aullrem(a, b)
uint64_t a;
uint64_t b;
{
return (a % b);
}
static int64_t
_allshl(a, b)
int64_t a;
uint8_t b;
{
return (a << b);
}
static uint64_t
_aullshl(a, b)
uint64_t a;
uint8_t b;
{
return (a << b);
}
static int64_t
_allshr(a, b)
int64_t a;
uint8_t b;
{
return (a >> b);
}
static uint64_t
_aullshr(a, b)
uint64_t a;
uint8_t b;
{
return (a >> b);
}
static slist_entry *
ntoskrnl_pushsl(head, entry)
slist_header *head;
slist_entry *entry;
{
slist_entry *oldhead;
oldhead = head->slh_list.slh_next;
entry->sl_next = head->slh_list.slh_next;
head->slh_list.slh_next = entry;
head->slh_list.slh_depth++;
head->slh_list.slh_seq++;
return(oldhead);
}
static slist_entry *
ntoskrnl_popsl(head)
slist_header *head;
{
slist_entry *first;
first = head->slh_list.slh_next;
if (first != NULL) {
head->slh_list.slh_next = first->sl_next;
head->slh_list.slh_depth--;
head->slh_list.slh_seq++;
}
return(first);
}
/*
* We need this to make lookaside lists work for amd64.
* We pass a pointer to ExAllocatePoolWithTag() the lookaside
* list structure. For amd64 to work right, this has to be a
* pointer to the wrapped version of the routine, not the
* original. Letting the Windows driver invoke the original
* function directly will result in a convention calling
* mismatch and a pretty crash. On x86, this effectively
* becomes a no-op since ipt_func and ipt_wrap are the same.
*/
static funcptr
ntoskrnl_findwrap(func)
funcptr func;
{
image_patch_table *patch;
patch = ntoskrnl_functbl;
while (patch->ipt_func != NULL) {
if ((funcptr)patch->ipt_func == func)
return((funcptr)patch->ipt_wrap);
patch++;
}
return(NULL);
}
static void
ExInitializePagedLookasideList(lookaside, allocfunc, freefunc,
flags, size, tag, depth)
paged_lookaside_list *lookaside;
lookaside_alloc_func *allocfunc;
lookaside_free_func *freefunc;
uint32_t flags;
size_t size;
uint32_t tag;
uint16_t depth;
{
bzero((char *)lookaside, sizeof(paged_lookaside_list));
if (size < sizeof(slist_entry))
lookaside->nll_l.gl_size = sizeof(slist_entry);
else
lookaside->nll_l.gl_size = size;
lookaside->nll_l.gl_tag = tag;
if (allocfunc == NULL)
lookaside->nll_l.gl_allocfunc =
ntoskrnl_findwrap((funcptr)ExAllocatePoolWithTag);
else
lookaside->nll_l.gl_allocfunc = allocfunc;
if (freefunc == NULL)
lookaside->nll_l.gl_freefunc =
ntoskrnl_findwrap((funcptr)ExFreePool);
else
lookaside->nll_l.gl_freefunc = freefunc;
#ifdef __i386__
KeInitializeSpinLock(&lookaside->nll_obsoletelock);
#endif
lookaside->nll_l.gl_type = NonPagedPool;
lookaside->nll_l.gl_depth = depth;
lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
return;
}
static void
ExDeletePagedLookasideList(lookaside)
paged_lookaside_list *lookaside;
{
void *buf;
void (*freefunc)(void *);
freefunc = lookaside->nll_l.gl_freefunc;
while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
MSCALL1(freefunc, buf);
return;
}
static void
ExInitializeNPagedLookasideList(lookaside, allocfunc, freefunc,
flags, size, tag, depth)
npaged_lookaside_list *lookaside;
lookaside_alloc_func *allocfunc;
lookaside_free_func *freefunc;
uint32_t flags;
size_t size;
uint32_t tag;
uint16_t depth;
{
bzero((char *)lookaside, sizeof(npaged_lookaside_list));
if (size < sizeof(slist_entry))
lookaside->nll_l.gl_size = sizeof(slist_entry);
else
lookaside->nll_l.gl_size = size;
lookaside->nll_l.gl_tag = tag;
if (allocfunc == NULL)
lookaside->nll_l.gl_allocfunc =
ntoskrnl_findwrap((funcptr)ExAllocatePoolWithTag);
else
lookaside->nll_l.gl_allocfunc = allocfunc;
if (freefunc == NULL)
lookaside->nll_l.gl_freefunc =
ntoskrnl_findwrap((funcptr)ExFreePool);
else
lookaside->nll_l.gl_freefunc = freefunc;
#ifdef __i386__
KeInitializeSpinLock(&lookaside->nll_obsoletelock);
#endif
lookaside->nll_l.gl_type = NonPagedPool;
lookaside->nll_l.gl_depth = depth;
lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
return;
}
static void
ExDeleteNPagedLookasideList(lookaside)
npaged_lookaside_list *lookaside;
{
void *buf;
void (*freefunc)(void *);
freefunc = lookaside->nll_l.gl_freefunc;
while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
MSCALL1(freefunc, buf);
return;
}
static slist_entry *
InterlockedPushEntrySList(head, entry)
slist_header *head;
slist_entry *entry;
{
slist_entry *oldhead;
oldhead = ExInterlockedPushEntrySList(head, entry, &ntoskrnl_global);
return(oldhead);
}
static slist_entry *
InterlockedPopEntrySList(head)
slist_header *head;
{
slist_entry *first;
first = ExInterlockedPopEntrySList(head, &ntoskrnl_global);
return(first);
}
static slist_entry *
ExInterlockedPushEntrySList(head, entry, lock)
slist_header *head;
slist_entry *entry;
kspin_lock *lock;
{
slist_entry *oldhead;
uint8_t irql;
KeAcquireSpinLock(lock, &irql);
oldhead = ntoskrnl_pushsl(head, entry);
KeReleaseSpinLock(lock, irql);
return(oldhead);
}
static slist_entry *
ExInterlockedPopEntrySList(head, lock)
slist_header *head;
kspin_lock *lock;
{
slist_entry *first;
uint8_t irql;
KeAcquireSpinLock(lock, &irql);
first = ntoskrnl_popsl(head);
KeReleaseSpinLock(lock, irql);
return(first);
}
static uint16_t
ExQueryDepthSList(head)
slist_header *head;
{
uint16_t depth;
uint8_t irql;
KeAcquireSpinLock(&ntoskrnl_global, &irql);
depth = head->slh_list.slh_depth;
KeReleaseSpinLock(&ntoskrnl_global, irql);
return(depth);
}
/*
* The KeInitializeSpinLock(), KefAcquireSpinLockAtDpcLevel()
* and KefReleaseSpinLockFromDpcLevel() appear to be analagous
* to splnet()/splx() in their use. We can't create a new mutex
* lock here because there is no complimentary KeFreeSpinLock()
* function. Instead, we grab a mutex from the mutex pool.
*/
void
KeInitializeSpinLock(lock)
kspin_lock *lock;
{
*lock = 0;
return;
}
#ifdef __i386__
void
KefAcquireSpinLockAtDpcLevel(lock)
kspin_lock *lock;
{
while (atomic_cmpset_acq_int((volatile u_int *)lock, 0, 1) == 0)
/* sit and spin */;
return;
}
void
KefReleaseSpinLockFromDpcLevel(lock)
kspin_lock *lock;
{
atomic_store_rel_int((volatile u_int *)lock, 0);
return;
}
uint8_t
KeAcquireSpinLockRaiseToDpc(kspin_lock *lock)
{
uint8_t oldirql;
if (KeGetCurrentIrql() > DISPATCH_LEVEL)
panic("IRQL_NOT_LESS_THAN_OR_EQUAL");
oldirql = KeRaiseIrql(DISPATCH_LEVEL);
KeAcquireSpinLockAtDpcLevel(lock);
return(oldirql);
}
#else
void
KeAcquireSpinLockAtDpcLevel(kspin_lock *lock)
{
while (atomic_cmpset_acq_int((volatile u_int *)lock, 0, 1) == 0)
/* sit and spin */;
return;
}
void
KeReleaseSpinLockFromDpcLevel(kspin_lock *lock)
{
atomic_store_rel_int((volatile u_int *)lock, 0);
return;
}
#endif /* __i386__ */
uintptr_t
InterlockedExchange(dst, val)
volatile uint32_t *dst;
uintptr_t val;
{
uint8_t irql;
uintptr_t r;
KeAcquireSpinLock(&ntoskrnl_global, &irql);
r = *dst;
*dst = val;
KeReleaseSpinLock(&ntoskrnl_global, irql);
return(r);
}
static uint32_t
InterlockedIncrement(addend)
volatile uint32_t *addend;
{
atomic_add_long((volatile u_long *)addend, 1);
return(*addend);
}
static uint32_t
InterlockedDecrement(addend)
volatile uint32_t *addend;
{
atomic_subtract_long((volatile u_long *)addend, 1);
return(*addend);
}
static void
ExInterlockedAddLargeStatistic(addend, inc)
uint64_t *addend;
uint32_t inc;
{
uint8_t irql;
KeAcquireSpinLock(&ntoskrnl_global, &irql);
*addend += inc;
KeReleaseSpinLock(&ntoskrnl_global, irql);
return;
};
mdl *
IoAllocateMdl(vaddr, len, secondarybuf, chargequota, iopkt)
void *vaddr;
uint32_t len;
uint8_t secondarybuf;
uint8_t chargequota;
irp *iopkt;
{
mdl *m;
int zone = 0;
if (MmSizeOfMdl(vaddr, len) > MDL_ZONE_SIZE)
m = ExAllocatePoolWithTag(NonPagedPool,
MmSizeOfMdl(vaddr, len), 0);
else {
m = uma_zalloc(mdl_zone, M_NOWAIT | M_ZERO);
zone++;
}
if (m == NULL)
return (NULL);
MmInitializeMdl(m, vaddr, len);
/*
* MmInitializMdl() clears the flags field, so we
* have to set this here. If the MDL came from the
* MDL UMA zone, tag it so we can release it to
* the right place later.
*/
if (zone)
m->mdl_flags = MDL_ZONE_ALLOCED;
if (iopkt != NULL) {
if (secondarybuf == TRUE) {
mdl *last;
last = iopkt->irp_mdl;
while (last->mdl_next != NULL)
last = last->mdl_next;
last->mdl_next = m;
} else {
if (iopkt->irp_mdl != NULL)
panic("leaking an MDL in IoAllocateMdl()");
iopkt->irp_mdl = m;
}
}
return (m);
}
void
IoFreeMdl(m)
mdl *m;
{
if (m == NULL)
return;
if (m->mdl_flags & MDL_ZONE_ALLOCED)
uma_zfree(mdl_zone, m);
else
ExFreePool(m);
return;
}
static uint32_t
MmSizeOfMdl(vaddr, len)
void *vaddr;
size_t len;
{
uint32_t l;
l = sizeof(struct mdl) +
(sizeof(vm_offset_t *) * SPAN_PAGES(vaddr, len));
return(l);
}
/*
* The Microsoft documentation says this routine fills in the
* page array of an MDL with the _physical_ page addresses that
* comprise the buffer, but we don't really want to do that here.
* Instead, we just fill in the page array with the kernel virtual
* addresses of the buffers.
*/
static void
MmBuildMdlForNonPagedPool(m)
mdl *m;
{
vm_offset_t *mdl_pages;
int pagecnt, i;
pagecnt = SPAN_PAGES(m->mdl_byteoffset, m->mdl_bytecount);
if (pagecnt > (m->mdl_size - sizeof(mdl)) / sizeof(vm_offset_t *))
panic("not enough pages in MDL to describe buffer");
mdl_pages = MmGetMdlPfnArray(m);
for (i = 0; i < pagecnt; i++)
*mdl_pages = (vm_offset_t)m->mdl_startva + (i * PAGE_SIZE);
m->mdl_flags |= MDL_SOURCE_IS_NONPAGED_POOL;
m->mdl_mappedsystemva = MmGetMdlVirtualAddress(m);
return;
}
static void *
MmMapLockedPages(buf, accessmode)
mdl *buf;
uint8_t accessmode;
{
buf->mdl_flags |= MDL_MAPPED_TO_SYSTEM_VA;
return(MmGetMdlVirtualAddress(buf));
}
static void *
MmMapLockedPagesSpecifyCache(buf, accessmode, cachetype, vaddr,
bugcheck, prio)
mdl *buf;
uint8_t accessmode;
uint32_t cachetype;
void *vaddr;
uint32_t bugcheck;
uint32_t prio;
{
return(MmMapLockedPages(buf, accessmode));
}
static void
MmUnmapLockedPages(vaddr, buf)
void *vaddr;
mdl *buf;
{
buf->mdl_flags &= ~MDL_MAPPED_TO_SYSTEM_VA;
return;
}
/*
* This function has a problem in that it will break if you
* compile this module without PAE and try to use it on a PAE
* kernel. Unfortunately, there's no way around this at the
* moment. It's slightly less broken that using pmap_kextract().
* You'd think the virtual memory subsystem would help us out
* here, but it doesn't.
*/
static uint8_t
MmIsAddressValid(vaddr)
void *vaddr;
{
if (pmap_extract(kernel_map->pmap, (vm_offset_t)vaddr))
return(TRUE);
return(FALSE);
}
/*
* Workitems are unlike DPCs, in that they run in a user-mode thread
* context rather than at DISPATCH_LEVEL in kernel context. In our
* case we run them in kernel context anyway.
*/
static void
ntoskrnl_workitem_thread(arg)
void *arg;
{
kdpc_queue *kq;
list_entry *l;
io_workitem *iw;
kq = arg;
INIT_LIST_HEAD(&kq->kq_med);
kq->kq_td = curthread;
kq->kq_exit = 0;
kq->kq_state = NDIS_PSTATE_SLEEPING;
mtx_init(&kq->kq_lock, "NDIS thread lock", NULL, MTX_SPIN);
KeInitializeEvent(&kq->kq_proc, EVENT_TYPE_SYNC, FALSE);
KeInitializeEvent(&kq->kq_dead, EVENT_TYPE_SYNC, FALSE);
while (1) {
KeWaitForSingleObject((nt_dispatch_header *)&kq->kq_proc,
0, 0, TRUE, NULL);
mtx_lock_spin(&kq->kq_lock);
if (kq->kq_exit) {
mtx_unlock_spin(&kq->kq_lock);
KeSetEvent(&kq->kq_dead, 0, FALSE);
break;
}
kq->kq_state = NDIS_PSTATE_RUNNING;
l = kq->kq_med.nle_flink;
while (l != & kq->kq_med) {
iw = CONTAINING_RECORD(l,
io_workitem, iw_listentry);
REMOVE_LIST_HEAD((&kq->kq_med));
INIT_LIST_HEAD(l);
if (iw->iw_func == NULL) {
l = kq->kq_med.nle_flink;
continue;
}
mtx_unlock_spin(&kq->kq_lock);
MSCALL2(iw->iw_func, iw->iw_dobj, iw->iw_ctx);
mtx_lock_spin(&kq->kq_lock);
l = kq->kq_med.nle_flink;
}
kq->kq_state = NDIS_PSTATE_SLEEPING;
mtx_unlock_spin(&kq->kq_lock);
}
mtx_destroy(&kq->kq_lock);
#if __FreeBSD_version < 502113
mtx_lock(&Giant);
#endif
kthread_exit(0);
return; /* notreached */
}
static void
ntoskrnl_destroy_workitem_threads(void)
{
kdpc_queue *kq;
int i;
for (i = 0; i < WORKITEM_THREADS; i++) {
kq = wq_queues + i;
kq->kq_exit = 1;
KeSetEvent(&kq->kq_proc, 0, FALSE);
KeWaitForSingleObject((nt_dispatch_header *)&kq->kq_dead,
0, 0, TRUE, NULL);
}
return;
}
io_workitem *
IoAllocateWorkItem(dobj)
device_object *dobj;
{
io_workitem *iw;
iw = uma_zalloc(iw_zone, M_NOWAIT);
if (iw == NULL)
return(NULL);
INIT_LIST_HEAD(&iw->iw_listentry);
iw->iw_dobj = dobj;
mtx_lock(&ntoskrnl_dispatchlock);
iw->iw_idx = wq_idx;
WORKIDX_INC(wq_idx);
mtx_unlock(&ntoskrnl_dispatchlock);
return(iw);
}
void
IoFreeWorkItem(iw)
io_workitem *iw;
{
uma_zfree(iw_zone, iw);
return;
}
void
IoQueueWorkItem(iw, iw_func, qtype, ctx)
io_workitem *iw;
io_workitem_func iw_func;
uint32_t qtype;
void *ctx;
{
int state;
kdpc_queue *kq;
iw->iw_func = iw_func;
iw->iw_ctx = ctx;
kq = wq_queues + iw->iw_idx;
mtx_lock_spin(&kq->kq_lock);
INSERT_LIST_TAIL((&kq->kq_med), (&iw->iw_listentry));
state = kq->kq_state;
mtx_unlock_spin(&kq->kq_lock);
if (state == NDIS_PSTATE_SLEEPING)
KeSetEvent(&kq->kq_proc, 0, FALSE);
return;
}
static void
ntoskrnl_workitem(dobj, arg)
device_object *dobj;
void *arg;
{
io_workitem *iw;
work_queue_item *w;
work_item_func f;
iw = arg;
w = (work_queue_item *)dobj;
f = (work_item_func)w->wqi_func;
uma_zfree(iw_zone, iw);
MSCALL2(f, w, w->wqi_ctx);
return;
}
void
ExQueueWorkItem(w, qtype)
work_queue_item *w;
uint32_t qtype;
{
io_workitem *iw;
io_workitem_func iwf;
iw = IoAllocateWorkItem((device_object *)w);
if (iw == NULL)
return;
iw->iw_idx = WORKITEM_LEGACY_THREAD;
iwf = (io_workitem_func)ntoskrnl_findwrap((funcptr)ntoskrnl_workitem);
IoQueueWorkItem(iw, iwf, qtype, iw);
return;
}
static size_t
RtlCompareMemory(s1, s2, len)
const void *s1;
const void *s2;
size_t len;
{
size_t i, total = 0;
uint8_t *m1, *m2;
m1 = __DECONST(char *, s1);
m2 = __DECONST(char *, s2);
for (i = 0; i < len; i++) {
if (m1[i] == m2[i])
total++;
}
return(total);
}
static void
RtlInitAnsiString(dst, src)
ndis_ansi_string *dst;
char *src;
{
ndis_ansi_string *a;
a = dst;
if (a == NULL)
return;
if (src == NULL) {
a->nas_len = a->nas_maxlen = 0;
a->nas_buf = NULL;
} else {
a->nas_buf = src;
a->nas_len = a->nas_maxlen = strlen(src);
}
return;
}
static void
RtlInitUnicodeString(dst, src)
ndis_unicode_string *dst;
uint16_t *src;
{
ndis_unicode_string *u;
int i;
u = dst;
if (u == NULL)
return;
if (src == NULL) {
u->us_len = u->us_maxlen = 0;
u->us_buf = NULL;
} else {
i = 0;
while(src[i] != 0)
i++;
u->us_buf = src;
u->us_len = u->us_maxlen = i * 2;
}
return;
}
ndis_status
RtlUnicodeStringToInteger(ustr, base, val)
ndis_unicode_string *ustr;
uint32_t base;
uint32_t *val;
{
uint16_t *uchr;
int len, neg = 0;
char abuf[64];
char *astr;
uchr = ustr->us_buf;
len = ustr->us_len;
bzero(abuf, sizeof(abuf));
if ((char)((*uchr) & 0xFF) == '-') {
neg = 1;
uchr++;
len -= 2;
} else if ((char)((*uchr) & 0xFF) == '+') {
neg = 0;
uchr++;
len -= 2;
}
if (base == 0) {
if ((char)((*uchr) & 0xFF) == 'b') {
base = 2;
uchr++;
len -= 2;
} else if ((char)((*uchr) & 0xFF) == 'o') {
base = 8;
uchr++;
len -= 2;
} else if ((char)((*uchr) & 0xFF) == 'x') {
base = 16;
uchr++;
len -= 2;
} else
base = 10;
}
astr = abuf;
if (neg) {
strcpy(astr, "-");
astr++;
}
ndis_unicode_to_ascii(uchr, len, &astr);
*val = strtoul(abuf, NULL, base);
return(NDIS_STATUS_SUCCESS);
}
static void
RtlFreeUnicodeString(ustr)
ndis_unicode_string *ustr;
{
if (ustr->us_buf == NULL)
return;
free(ustr->us_buf, M_DEVBUF);
ustr->us_buf = NULL;
return;
}
static void
RtlFreeAnsiString(astr)
ndis_ansi_string *astr;
{
if (astr->nas_buf == NULL)
return;
free(astr->nas_buf, M_DEVBUF);
astr->nas_buf = NULL;
return;
}
static int
atoi(str)
const char *str;
{
return (int)strtol(str, (char **)NULL, 10);
}
static long
atol(str)
const char *str;
{
return strtol(str, (char **)NULL, 10);
}
static int
rand(void)
{
struct timeval tv;
microtime(&tv);
srandom(tv.tv_usec);
return((int)random());
}
static void
srand(seed)
unsigned int seed;
{
srandom(seed);
return;
}
static uint8_t
IoIsWdmVersionAvailable(major, minor)
uint8_t major;
uint8_t minor;
{
if (major == WDM_MAJOR && minor == WDM_MINOR_WINXP)
return(TRUE);
return(FALSE);
}
static ndis_status
IoGetDeviceProperty(devobj, regprop, buflen, prop, reslen)
device_object *devobj;
uint32_t regprop;
uint32_t buflen;
void *prop;
uint32_t *reslen;
{
driver_object *drv;
uint16_t **name;
drv = devobj->do_drvobj;
switch (regprop) {
case DEVPROP_DRIVER_KEYNAME:
name = prop;
*name = drv->dro_drivername.us_buf;
*reslen = drv->dro_drivername.us_len;
break;
default:
return(STATUS_INVALID_PARAMETER_2);
break;
}
return(STATUS_SUCCESS);
}
static void
KeInitializeMutex(kmutex, level)
kmutant *kmutex;
uint32_t level;
{
INIT_LIST_HEAD((&kmutex->km_header.dh_waitlisthead));
kmutex->km_abandoned = FALSE;
kmutex->km_apcdisable = 1;
kmutex->km_header.dh_sigstate = TRUE;
kmutex->km_header.dh_type = EVENT_TYPE_SYNC;
kmutex->km_header.dh_size = OTYPE_MUTEX;
kmutex->km_acquirecnt = 0;
kmutex->km_ownerthread = NULL;
return;
}
static uint32_t
KeReleaseMutex(kmutex, kwait)
kmutant *kmutex;
uint8_t kwait;
{
mtx_lock(&ntoskrnl_dispatchlock);
if (kmutex->km_ownerthread != curthread->td_proc) {
mtx_unlock(&ntoskrnl_dispatchlock);
return(STATUS_MUTANT_NOT_OWNED);
}
kmutex->km_acquirecnt--;
if (kmutex->km_acquirecnt == 0) {
kmutex->km_ownerthread = NULL;
ntoskrnl_wakeup(&kmutex->km_header);
}
mtx_unlock(&ntoskrnl_dispatchlock);
return(kmutex->km_acquirecnt);
}
static uint32_t
KeReadStateMutex(kmutex)
kmutant *kmutex;
{
return(kmutex->km_header.dh_sigstate);
}
void
KeInitializeEvent(kevent, type, state)
nt_kevent *kevent;
uint32_t type;
uint8_t state;
{
INIT_LIST_HEAD((&kevent->k_header.dh_waitlisthead));
kevent->k_header.dh_sigstate = state;
kevent->k_header.dh_type = type;
kevent->k_header.dh_size = OTYPE_EVENT;
return;
}
uint32_t
KeResetEvent(kevent)
nt_kevent *kevent;
{
uint32_t prevstate;
mtx_lock(&ntoskrnl_dispatchlock);
prevstate = kevent->k_header.dh_sigstate;
kevent->k_header.dh_sigstate = FALSE;
mtx_unlock(&ntoskrnl_dispatchlock);
return(prevstate);
}
uint32_t
KeSetEvent(kevent, increment, kwait)
nt_kevent *kevent;
uint32_t increment;
uint8_t kwait;
{
uint32_t prevstate;
mtx_lock(&ntoskrnl_dispatchlock);
prevstate = kevent->k_header.dh_sigstate;
ntoskrnl_wakeup(&kevent->k_header);
mtx_unlock(&ntoskrnl_dispatchlock);
return(prevstate);
}
void
KeClearEvent(kevent)
nt_kevent *kevent;
{
kevent->k_header.dh_sigstate = FALSE;
return;
}
uint32_t
KeReadStateEvent(kevent)
nt_kevent *kevent;
{
return(kevent->k_header.dh_sigstate);
}
static ndis_status
ObReferenceObjectByHandle(handle, reqaccess, otype,
accessmode, object, handleinfo)
ndis_handle handle;
uint32_t reqaccess;
void *otype;
uint8_t accessmode;
void **object;
void **handleinfo;
{
nt_objref *nr;
nr = malloc(sizeof(nt_objref), M_DEVBUF, M_NOWAIT|M_ZERO);
if (nr == NULL)
return(NDIS_STATUS_FAILURE);
INIT_LIST_HEAD((&nr->no_dh.dh_waitlisthead));
nr->no_obj = handle;
nr->no_dh.dh_size = OTYPE_THREAD;
TAILQ_INSERT_TAIL(&ntoskrnl_reflist, nr, link);
*object = nr;
return(NDIS_STATUS_SUCCESS);
}
static void
ObfDereferenceObject(object)
void *object;
{
nt_objref *nr;
nr = object;
TAILQ_REMOVE(&ntoskrnl_reflist, nr, link);
free(nr, M_DEVBUF);
return;
}
static uint32_t
ZwClose(handle)
ndis_handle handle;
{
return(STATUS_SUCCESS);
}
/*
* This is here just in case the thread returns without calling
* PsTerminateSystemThread().
*/
static void
ntoskrnl_thrfunc(arg)
void *arg;
{
thread_context *thrctx;
uint32_t (*tfunc)(void *);
void *tctx;
uint32_t rval;
thrctx = arg;
tfunc = thrctx->tc_thrfunc;
tctx = thrctx->tc_thrctx;
free(thrctx, M_TEMP);
rval = MSCALL1(tfunc, tctx);
PsTerminateSystemThread(rval);
return; /* notreached */
}
static ndis_status
PsCreateSystemThread(handle, reqaccess, objattrs, phandle,
clientid, thrfunc, thrctx)
ndis_handle *handle;
uint32_t reqaccess;
void *objattrs;
ndis_handle phandle;
void *clientid;
void *thrfunc;
void *thrctx;
{
int error;
char tname[128];
thread_context *tc;
struct proc *p;
tc = malloc(sizeof(thread_context), M_TEMP, M_NOWAIT);
if (tc == NULL)
return(NDIS_STATUS_FAILURE);
tc->tc_thrctx = thrctx;
tc->tc_thrfunc = thrfunc;
sprintf(tname, "windows kthread %d", ntoskrnl_kth);
error = kthread_create(ntoskrnl_thrfunc, tc, &p,
RFHIGHPID, NDIS_KSTACK_PAGES, tname);
*handle = p;
ntoskrnl_kth++;
return(error);
}
/*
* In Windows, the exit of a thread is an event that you're allowed
* to wait on, assuming you've obtained a reference to the thread using
* ObReferenceObjectByHandle(). Unfortunately, the only way we can
* simulate this behavior is to register each thread we create in a
* reference list, and if someone holds a reference to us, we poke
* them.
*/
static ndis_status
PsTerminateSystemThread(status)
ndis_status status;
{
struct nt_objref *nr;
mtx_lock(&ntoskrnl_dispatchlock);
TAILQ_FOREACH(nr, &ntoskrnl_reflist, link) {
if (nr->no_obj != curthread->td_proc)
continue;
ntoskrnl_wakeup(&nr->no_dh);
break;
}
mtx_unlock(&ntoskrnl_dispatchlock);
ntoskrnl_kth--;
#if __FreeBSD_version < 502113
mtx_lock(&Giant);
#endif
kthread_exit(0);
return(0); /* notreached */
}
static uint32_t
DbgPrint(char *fmt, ...)
{
va_list ap;
if (bootverbose) {
va_start(ap, fmt);
vprintf(fmt, ap);
}
return(STATUS_SUCCESS);
}
static void
DbgBreakPoint(void)
{
#if __FreeBSD_version < 502113
Debugger("DbgBreakPoint(): breakpoint");
#else
kdb_enter("DbgBreakPoint(): breakpoint");
#endif
}
static void
ntoskrnl_timercall(arg)
void *arg;
{
ktimer *timer;
struct timeval tv;
mtx_unlock(&Giant);
mtx_lock(&ntoskrnl_dispatchlock);
timer = arg;
timer->k_header.dh_inserted = FALSE;
/*
* If this is a periodic timer, re-arm it
* so it will fire again. We do this before
* calling any deferred procedure calls because
* it's possible the DPC might cancel the timer,
* in which case it would be wrong for us to
* re-arm it again afterwards.
*/
if (timer->k_period) {
tv.tv_sec = 0;
tv.tv_usec = timer->k_period * 1000;
timer->k_header.dh_inserted = TRUE;
timer->k_handle = timeout(ntoskrnl_timercall,
timer, tvtohz(&tv));
}
if (timer->k_dpc != NULL)
KeInsertQueueDpc(timer->k_dpc, NULL, NULL);
ntoskrnl_wakeup(&timer->k_header);
mtx_unlock(&ntoskrnl_dispatchlock);
mtx_lock(&Giant);
return;
}
void
KeInitializeTimer(timer)
ktimer *timer;
{
if (timer == NULL)
return;
KeInitializeTimerEx(timer, EVENT_TYPE_NOTIFY);
return;
}
void
KeInitializeTimerEx(timer, type)
ktimer *timer;
uint32_t type;
{
if (timer == NULL)
return;
bzero((char *)timer, sizeof(ktimer));
INIT_LIST_HEAD((&timer->k_header.dh_waitlisthead));
timer->k_header.dh_sigstate = FALSE;
timer->k_header.dh_inserted = FALSE;
timer->k_header.dh_type = type;
timer->k_header.dh_size = OTYPE_TIMER;
callout_handle_init(&timer->k_handle);
return;
}
/*
* DPC subsystem. A Windows Defered Procedure Call has the following
* properties:
* - It runs at DISPATCH_LEVEL.
* - It can have one of 3 importance values that control when it
* runs relative to other DPCs in the queue.
* - On SMP systems, it can be set to run on a specific processor.
* In order to satisfy the last property, we create a DPC thread for
* each CPU in the system and bind it to that CPU. Each thread
* maintains three queues with different importance levels, which
* will be processed in order from lowest to highest.
*
* In Windows, interrupt handlers run as DPCs. (Not to be confused
* with ISRs, which run in interrupt context and can preempt DPCs.)
* ISRs are given the highest importance so that they'll take
* precedence over timers and other things.
*/
static void
ntoskrnl_dpc_thread(arg)
void *arg;
{
kdpc_queue *kq;
kdpc *d;
list_entry *l;
kq = arg;
INIT_LIST_HEAD(&kq->kq_high);
INIT_LIST_HEAD(&kq->kq_low);
INIT_LIST_HEAD(&kq->kq_med);
kq->kq_td = curthread;
kq->kq_exit = 0;
kq->kq_state = NDIS_PSTATE_SLEEPING;
mtx_init(&kq->kq_lock, "NDIS thread lock", NULL, MTX_SPIN);
KeInitializeEvent(&kq->kq_proc, EVENT_TYPE_SYNC, FALSE);
KeInitializeEvent(&kq->kq_done, EVENT_TYPE_SYNC, FALSE);
KeInitializeEvent(&kq->kq_dead, EVENT_TYPE_SYNC, FALSE);
sched_pin();
while (1) {
KeWaitForSingleObject((nt_dispatch_header *)&kq->kq_proc,
0, 0, TRUE, NULL);
mtx_lock_spin(&kq->kq_lock);
if (kq->kq_exit) {
mtx_unlock_spin(&kq->kq_lock);
KeSetEvent(&kq->kq_dead, 0, FALSE);
break;
}
kq->kq_state = NDIS_PSTATE_RUNNING;
/* Process high importance list first. */
l = kq->kq_high.nle_flink;
while (l != &kq->kq_high) {
d = CONTAINING_RECORD(l, kdpc, k_dpclistentry);
REMOVE_LIST_ENTRY((&d->k_dpclistentry));
INIT_LIST_HEAD((&d->k_dpclistentry));
d->k_lock = NULL;
mtx_unlock_spin(&kq->kq_lock);
ntoskrnl_run_dpc(d);
mtx_lock_spin(&kq->kq_lock);
l = kq->kq_high.nle_flink;
}
/* Now the medium importance list. */
l = kq->kq_med.nle_flink;
while (l != &kq->kq_med) {
d = CONTAINING_RECORD(l, kdpc, k_dpclistentry);
REMOVE_LIST_ENTRY((&d->k_dpclistentry));
INIT_LIST_HEAD((&d->k_dpclistentry));
d->k_lock = NULL;
mtx_unlock_spin(&kq->kq_lock);
ntoskrnl_run_dpc(d);
mtx_lock_spin(&kq->kq_lock);
l = kq->kq_med.nle_flink;
}
/* And finally the low importance list. */
l = kq->kq_low.nle_flink;
while (l != &kq->kq_low) {
d = CONTAINING_RECORD(l, kdpc, k_dpclistentry);
REMOVE_LIST_ENTRY((&d->k_dpclistentry));
INIT_LIST_HEAD((&d->k_dpclistentry));
d->k_lock = NULL;
mtx_unlock_spin(&kq->kq_lock);
ntoskrnl_run_dpc(d);
mtx_lock_spin(&kq->kq_lock);
l = kq->kq_low.nle_flink;
}
kq->kq_state = NDIS_PSTATE_SLEEPING;
mtx_unlock_spin(&kq->kq_lock);
KeSetEvent(&kq->kq_done, 0, FALSE);
}
mtx_destroy(&kq->kq_lock);
#if __FreeBSD_version < 502113
mtx_lock(&Giant);
#endif
kthread_exit(0);
return; /* notreached */
}
/*
* This is a wrapper for Windows deferred procedure calls that
* have been placed on an NDIS thread work queue. We need it
* since the DPC could be a _stdcall function. Also, as far as
* I can tell, defered procedure calls must run at DISPATCH_LEVEL.
*/
static void
ntoskrnl_run_dpc(arg)
void *arg;
{
kdpc_func dpcfunc;
kdpc *dpc;
uint8_t irql;
dpc = arg;
dpcfunc = dpc->k_deferedfunc;
if (dpcfunc == NULL)
return;
irql = KeRaiseIrql(DISPATCH_LEVEL);
MSCALL4(dpcfunc, dpc, dpc->k_deferredctx,
dpc->k_sysarg1, dpc->k_sysarg2);
KeLowerIrql(irql);
return;
}
static void
ntoskrnl_destroy_dpc_threads(void)
{
kdpc_queue *kq;
kdpc dpc;
int i;
kq = kq_queues;
for (i = 0; i < mp_ncpus; i++) {
kq += i;
kq->kq_exit = 1;
KeInitializeDpc(&dpc, NULL, NULL);
KeSetTargetProcessorDpc(&dpc, i);
KeInsertQueueDpc(&dpc, NULL, NULL);
KeWaitForSingleObject((nt_dispatch_header *)&kq->kq_dead,
0, 0, TRUE, NULL);
}
return;
}
static uint8_t
ntoskrnl_insert_dpc(head, dpc)
list_entry *head;
kdpc *dpc;
{
list_entry *l;
kdpc *d;
l = head->nle_flink;
while (l != head) {
d = CONTAINING_RECORD(l, kdpc, k_dpclistentry);
if (d == dpc)
return(FALSE);
l = l->nle_flink;
}
INSERT_LIST_TAIL((head), (&dpc->k_dpclistentry));
return (TRUE);
}
void
KeInitializeDpc(dpc, dpcfunc, dpcctx)
kdpc *dpc;
void *dpcfunc;
void *dpcctx;
{
if (dpc == NULL)
return;
dpc->k_deferedfunc = dpcfunc;
dpc->k_deferredctx = dpcctx;
dpc->k_num = KDPC_CPU_DEFAULT;
dpc->k_importance = KDPC_IMPORTANCE_MEDIUM;
dpc->k_num = KeGetCurrentProcessorNumber();
/*
* In case someone tries to dequeue a DPC that
* hasn't been queued yet.
*/
dpc->k_lock = NULL /*&ntoskrnl_dispatchlock*/;
INIT_LIST_HEAD((&dpc->k_dpclistentry));
return;
}
uint8_t
KeInsertQueueDpc(dpc, sysarg1, sysarg2)
kdpc *dpc;
void *sysarg1;
void *sysarg2;
{
kdpc_queue *kq;
uint8_t r;
int state;
if (dpc == NULL)
return(FALSE);
dpc->k_sysarg1 = sysarg1;
dpc->k_sysarg2 = sysarg2;
/*
* By default, the DPC is queued to run on the same CPU
* that scheduled it.
*/
kq = kq_queues;
if (dpc->k_num == KDPC_CPU_DEFAULT)
kq += curthread->td_oncpu;
else
kq += dpc->k_num;
/*
* Also by default, we put the DPC on the medium
* priority queue.
*/
mtx_lock_spin(&kq->kq_lock);
if (dpc->k_importance == KDPC_IMPORTANCE_HIGH)
r = ntoskrnl_insert_dpc(&kq->kq_high, dpc);
else if (dpc->k_importance == KDPC_IMPORTANCE_LOW)
r = ntoskrnl_insert_dpc(&kq->kq_low, dpc);
else
r = ntoskrnl_insert_dpc(&kq->kq_med, dpc);
if (r == TRUE)
dpc->k_lock = &kq->kq_lock;
state = kq->kq_state;
mtx_unlock_spin(&kq->kq_lock);
if (r == FALSE)
return(r);
if (state == NDIS_PSTATE_SLEEPING)
KeSetEvent(&kq->kq_proc, 0, FALSE);
return(r);
}
uint8_t
KeRemoveQueueDpc(dpc)
kdpc *dpc;
{
if (dpc == NULL)
return(FALSE);
if (dpc->k_lock == NULL)
return(FALSE);
mtx_lock_spin(dpc->k_lock);
if (dpc->k_dpclistentry.nle_flink == &dpc->k_dpclistentry) {
mtx_unlock_spin(dpc->k_lock);
return(FALSE);
}
REMOVE_LIST_ENTRY((&dpc->k_dpclistentry));
INIT_LIST_HEAD((&dpc->k_dpclistentry));
mtx_unlock_spin(dpc->k_lock);
return(TRUE);
}
void
KeSetImportanceDpc(dpc, imp)
kdpc *dpc;
uint32_t imp;
{
if (imp != KDPC_IMPORTANCE_LOW &&
imp != KDPC_IMPORTANCE_MEDIUM &&
imp != KDPC_IMPORTANCE_HIGH)
return;
dpc->k_importance = (uint8_t)imp;
return;
}
void
KeSetTargetProcessorDpc(dpc, cpu)
kdpc *dpc;
uint8_t cpu;
{
if (cpu > mp_ncpus)
return;
dpc->k_num = cpu;
return;
}
void
KeFlushQueuedDpcs(void)
{
kdpc_queue *kq;
int i;
/*
* Poke each DPC queue and wait
* for them to drain.
*/
for (i = 0; i < mp_ncpus; i++) {
kq = kq_queues + i;
KeSetEvent(&kq->kq_proc, 0, FALSE);
KeWaitForSingleObject((nt_dispatch_header *)&kq->kq_done,
0, 0, TRUE, NULL);
}
return;
}
uint32_t
KeGetCurrentProcessorNumber(void)
{
return((uint32_t)curthread->td_oncpu);
}
uint8_t
KeSetTimerEx(timer, duetime, period, dpc)
ktimer *timer;
int64_t duetime;
uint32_t period;
kdpc *dpc;
{
struct timeval tv;
uint64_t curtime;
uint8_t pending;
if (timer == NULL)
return(FALSE);
mtx_lock(&ntoskrnl_dispatchlock);
if (timer->k_header.dh_inserted == TRUE) {
untimeout(ntoskrnl_timercall, timer, timer->k_handle);
timer->k_header.dh_inserted = FALSE;
pending = TRUE;
} else
pending = FALSE;
timer->k_duetime = duetime;
timer->k_period = period;
timer->k_header.dh_sigstate = FALSE;
timer->k_dpc = dpc;
if (duetime < 0) {
tv.tv_sec = - (duetime) / 10000000;
tv.tv_usec = (- (duetime) / 10) -
(tv.tv_sec * 1000000);
} else {
ntoskrnl_time(&curtime);
if (duetime < curtime)
tv.tv_sec = tv.tv_usec = 0;
else {
tv.tv_sec = ((duetime) - curtime) / 10000000;
tv.tv_usec = ((duetime) - curtime) / 10 -
(tv.tv_sec * 1000000);
}
}
timer->k_header.dh_inserted = TRUE;
timer->k_handle = timeout(ntoskrnl_timercall, timer, tvtohz(&tv));
mtx_unlock(&ntoskrnl_dispatchlock);
return(pending);
}
uint8_t
KeSetTimer(timer, duetime, dpc)
ktimer *timer;
int64_t duetime;
kdpc *dpc;
{
return (KeSetTimerEx(timer, duetime, 0, dpc));
}
uint8_t
KeCancelTimer(timer)
ktimer *timer;
{
uint8_t pending;
if (timer == NULL)
return(FALSE);
mtx_lock(&ntoskrnl_dispatchlock);
if (timer->k_header.dh_inserted == TRUE) {
untimeout(ntoskrnl_timercall, timer, timer->k_handle);
if (timer->k_dpc != NULL)
KeRemoveQueueDpc(timer->k_dpc);
timer->k_header.dh_inserted = FALSE;
pending = TRUE;
} else
pending = KeRemoveQueueDpc(timer->k_dpc);
mtx_unlock(&ntoskrnl_dispatchlock);
return(pending);
}
uint8_t
KeReadStateTimer(timer)
ktimer *timer;
{
return(timer->k_header.dh_sigstate);
}
static void
dummy()
{
printf ("ntoskrnl dummy called...\n");
return;
}
image_patch_table ntoskrnl_functbl[] = {
IMPORT_SFUNC(RtlCompareMemory, 3),
IMPORT_SFUNC(RtlEqualUnicodeString, 3),
IMPORT_SFUNC(RtlCopyUnicodeString, 2),
IMPORT_SFUNC(RtlUnicodeStringToAnsiString, 3),
IMPORT_SFUNC(RtlAnsiStringToUnicodeString, 3),
IMPORT_SFUNC(RtlInitAnsiString, 2),
IMPORT_SFUNC_MAP(RtlInitString, RtlInitAnsiString, 2),
IMPORT_SFUNC(RtlInitUnicodeString, 2),
IMPORT_SFUNC(RtlFreeAnsiString, 1),
IMPORT_SFUNC(RtlFreeUnicodeString, 1),
IMPORT_SFUNC(RtlUnicodeStringToInteger, 3),
IMPORT_CFUNC(sprintf, 0),
IMPORT_CFUNC(vsprintf, 0),
IMPORT_CFUNC_MAP(_snprintf, snprintf, 0),
IMPORT_CFUNC_MAP(_vsnprintf, vsnprintf, 0),
IMPORT_CFUNC(DbgPrint, 0),
IMPORT_SFUNC(DbgBreakPoint, 0),
IMPORT_CFUNC(strncmp, 0),
IMPORT_CFUNC(strcmp, 0),
IMPORT_CFUNC(strncpy, 0),
IMPORT_CFUNC(strcpy, 0),
IMPORT_CFUNC(strlen, 0),
IMPORT_CFUNC_MAP(strstr, ntoskrnl_strstr, 0),
IMPORT_CFUNC_MAP(strchr, index, 0),
IMPORT_CFUNC(memcpy, 0),
IMPORT_CFUNC_MAP(memmove, ntoskrnl_memset, 0),
IMPORT_CFUNC_MAP(memset, ntoskrnl_memset, 0),
IMPORT_SFUNC(IoAllocateDriverObjectExtension, 4),
IMPORT_SFUNC(IoGetDriverObjectExtension, 2),
IMPORT_FFUNC(IofCallDriver, 2),
IMPORT_FFUNC(IofCompleteRequest, 2),
IMPORT_SFUNC(IoAcquireCancelSpinLock, 1),
IMPORT_SFUNC(IoReleaseCancelSpinLock, 1),
IMPORT_SFUNC(IoCancelIrp, 1),
IMPORT_SFUNC(IoCreateDevice, 7),
IMPORT_SFUNC(IoDeleteDevice, 1),
IMPORT_SFUNC(IoGetAttachedDevice, 1),
IMPORT_SFUNC(IoAttachDeviceToDeviceStack, 2),
IMPORT_SFUNC(IoDetachDevice, 1),
IMPORT_SFUNC(IoBuildSynchronousFsdRequest, 7),
IMPORT_SFUNC(IoBuildAsynchronousFsdRequest, 6),
IMPORT_SFUNC(IoBuildDeviceIoControlRequest, 9),
IMPORT_SFUNC(IoAllocateIrp, 2),
IMPORT_SFUNC(IoReuseIrp, 2),
IMPORT_SFUNC(IoMakeAssociatedIrp, 2),
IMPORT_SFUNC(IoFreeIrp, 1),
IMPORT_SFUNC(IoInitializeIrp, 3),
IMPORT_SFUNC(KeWaitForSingleObject, 5),
IMPORT_SFUNC(KeWaitForMultipleObjects, 8),
IMPORT_SFUNC(_allmul, 4),
IMPORT_SFUNC(_alldiv, 4),
IMPORT_SFUNC(_allrem, 4),
IMPORT_RFUNC(_allshr, 0),
IMPORT_RFUNC(_allshl, 0),
IMPORT_SFUNC(_aullmul, 4),
IMPORT_SFUNC(_aulldiv, 4),
IMPORT_SFUNC(_aullrem, 4),
IMPORT_RFUNC(_aullshr, 0),
IMPORT_RFUNC(_aullshl, 0),
IMPORT_CFUNC(atoi, 0),
IMPORT_CFUNC(atol, 0),
IMPORT_CFUNC(rand, 0),
IMPORT_CFUNC(srand, 0),
IMPORT_SFUNC(WRITE_REGISTER_USHORT, 2),
IMPORT_SFUNC(READ_REGISTER_USHORT, 1),
IMPORT_SFUNC(WRITE_REGISTER_ULONG, 2),
IMPORT_SFUNC(READ_REGISTER_ULONG, 1),
IMPORT_SFUNC(READ_REGISTER_UCHAR, 1),
IMPORT_SFUNC(WRITE_REGISTER_UCHAR, 2),
IMPORT_SFUNC(ExInitializePagedLookasideList, 7),
IMPORT_SFUNC(ExDeletePagedLookasideList, 1),
IMPORT_SFUNC(ExInitializeNPagedLookasideList, 7),
IMPORT_SFUNC(ExDeleteNPagedLookasideList, 1),
IMPORT_FFUNC(InterlockedPopEntrySList, 1),
IMPORT_FFUNC(InterlockedPushEntrySList, 2),
IMPORT_SFUNC(ExQueryDepthSList, 1),
IMPORT_FFUNC_MAP(ExpInterlockedPopEntrySList,
InterlockedPopEntrySList, 1),
IMPORT_FFUNC_MAP(ExpInterlockedPushEntrySList,
InterlockedPushEntrySList, 2),
IMPORT_FFUNC(ExInterlockedPopEntrySList, 2),
IMPORT_FFUNC(ExInterlockedPushEntrySList, 3),
IMPORT_SFUNC(ExAllocatePoolWithTag, 3),
IMPORT_SFUNC(ExFreePool, 1),
#ifdef __i386__
IMPORT_FFUNC(KefAcquireSpinLockAtDpcLevel, 1),
IMPORT_FFUNC(KefReleaseSpinLockFromDpcLevel,1),
IMPORT_FFUNC(KeAcquireSpinLockRaiseToDpc, 1),
#else
/*
* For AMD64, we can get away with just mapping
* KeAcquireSpinLockRaiseToDpc() directly to KfAcquireSpinLock()
* because the calling conventions end up being the same.
* On i386, we have to be careful because KfAcquireSpinLock()
* is _fastcall but KeAcquireSpinLockRaiseToDpc() isn't.
*/
IMPORT_SFUNC(KeAcquireSpinLockAtDpcLevel, 1),
IMPORT_SFUNC(KeReleaseSpinLockFromDpcLevel, 1),
IMPORT_SFUNC_MAP(KeAcquireSpinLockRaiseToDpc, KfAcquireSpinLock, 1),
#endif
IMPORT_SFUNC_MAP(KeReleaseSpinLock, KfReleaseSpinLock, 1),
IMPORT_FFUNC(InterlockedIncrement, 1),
IMPORT_FFUNC(InterlockedDecrement, 1),
IMPORT_FFUNC(InterlockedExchange, 2),
IMPORT_FFUNC(ExInterlockedAddLargeStatistic, 2),
IMPORT_SFUNC(IoAllocateMdl, 5),
IMPORT_SFUNC(IoFreeMdl, 1),
IMPORT_SFUNC(MmSizeOfMdl, 1),
IMPORT_SFUNC(MmMapLockedPages, 2),
IMPORT_SFUNC(MmMapLockedPagesSpecifyCache, 6),
IMPORT_SFUNC(MmUnmapLockedPages, 2),
IMPORT_SFUNC(MmBuildMdlForNonPagedPool, 1),
IMPORT_SFUNC(MmIsAddressValid, 1),
IMPORT_SFUNC(KeInitializeSpinLock, 1),
IMPORT_SFUNC(IoIsWdmVersionAvailable, 2),
IMPORT_SFUNC(IoGetDeviceProperty, 5),
IMPORT_SFUNC(IoAllocateWorkItem, 1),
IMPORT_SFUNC(IoFreeWorkItem, 1),
IMPORT_SFUNC(IoQueueWorkItem, 4),
IMPORT_SFUNC(ExQueueWorkItem, 2),
IMPORT_SFUNC(ntoskrnl_workitem, 2),
IMPORT_SFUNC(KeInitializeMutex, 2),
IMPORT_SFUNC(KeReleaseMutex, 2),
IMPORT_SFUNC(KeReadStateMutex, 1),
IMPORT_SFUNC(KeInitializeEvent, 3),
IMPORT_SFUNC(KeSetEvent, 3),
IMPORT_SFUNC(KeResetEvent, 1),
IMPORT_SFUNC(KeClearEvent, 1),
IMPORT_SFUNC(KeReadStateEvent, 1),
IMPORT_SFUNC(KeInitializeTimer, 1),
IMPORT_SFUNC(KeInitializeTimerEx, 2),
IMPORT_SFUNC(KeSetTimer, 3),
IMPORT_SFUNC(KeSetTimerEx, 4),
IMPORT_SFUNC(KeCancelTimer, 1),
IMPORT_SFUNC(KeReadStateTimer, 1),
IMPORT_SFUNC(KeInitializeDpc, 3),
IMPORT_SFUNC(KeInsertQueueDpc, 3),
IMPORT_SFUNC(KeRemoveQueueDpc, 1),
IMPORT_SFUNC(KeSetImportanceDpc, 2),
IMPORT_SFUNC(KeSetTargetProcessorDpc, 2),
IMPORT_SFUNC(KeFlushQueuedDpcs, 0),
IMPORT_SFUNC(KeGetCurrentProcessorNumber, 1),
IMPORT_SFUNC(ObReferenceObjectByHandle, 6),
IMPORT_FFUNC(ObfDereferenceObject, 1),
IMPORT_SFUNC(ZwClose, 1),
IMPORT_SFUNC(PsCreateSystemThread, 7),
IMPORT_SFUNC(PsTerminateSystemThread, 1),
/*
* This last entry is a catch-all for any function we haven't
* implemented yet. The PE import list patching routine will
* use it for any function that doesn't have an explicit match
* in this table.
*/
{ NULL, (FUNC)dummy, NULL, 0, WINDRV_WRAP_STDCALL },
/* End of list. */
{ NULL, NULL, NULL }
};
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