dlls/hidclass.sys/main.c

   1 /*
   2  * WINE Hid device services
   3  *
   4  * Copyright 2015 Aric Stewart
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define NONAMELESSUNION
  22 #include <unistd.h>
  23 #include <stdarg.h>
  24 #include "hid.h"
  25 #include "wine/debug.h"
  26 #include "wine/list.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(hid);
  29
  30 static struct list minidriver_list = LIST_INIT(minidriver_list);
  31
  32 minidriver* find_minidriver(DRIVER_OBJECT *driver)
  33 {
  34     minidriver *md;
  35     LIST_FOR_EACH_ENTRY(md, &minidriver_list, minidriver, entry)
  36     {
  37         if (md->minidriver.DriverObject == driver)
  38             return md;
  39     }
  40     return NULL;
  41 }
  42
  43 static VOID WINAPI UnloadDriver(DRIVER_OBJECT *driver)
  44 {
  45     minidriver *md;
  46
  47     TRACE("Driver Unload\n");
  48     md = find_minidriver(driver);
  49     if (md)
  50     {
  51         hid_device *device, *next;
  52         TRACE("%i devices to unload\n", list_count(&md->device_list));
  53         LIST_FOR_EACH_ENTRY_SAFE(device, next, &md->device_list, hid_device, entry)
  54         {
  55             PNP_RemoveDevice(md, device->device, NULL);
  56         }
  57         if (md->DriverUnload)
  58             md->DriverUnload(md->minidriver.DriverObject);
  59         list_remove(&md->entry);
  60         HeapFree( GetProcessHeap(), 0, md );
  61     }
  62 }
  63
  64 NTSTATUS WINAPI HidRegisterMinidriver(HID_MINIDRIVER_REGISTRATION *registration)
  65 {
  66     minidriver *driver;
  67     driver = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*driver));
  68
  69     if (!driver)
  70         return STATUS_NO_MEMORY;
  71
  72     driver->DriverUnload = registration->DriverObject->DriverUnload;
  73     registration->DriverObject->DriverUnload = UnloadDriver;
  74
  75     registration->DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = HID_Device_ioctl;
  76     registration->DriverObject->MajorFunction[IRP_MJ_READ] = HID_Device_read;
  77     registration->DriverObject->MajorFunction[IRP_MJ_WRITE] = HID_Device_write;
  78     registration->DriverObject->MajorFunction[IRP_MJ_CREATE] = HID_Device_create;
  79     registration->DriverObject->MajorFunction[IRP_MJ_CLOSE] = HID_Device_close;
  80
  81     driver->PNPDispatch = registration->DriverObject->MajorFunction[IRP_MJ_PNP];
  82     registration->DriverObject->MajorFunction[IRP_MJ_PNP] = HID_PNP_Dispatch;
  83
  84     driver->AddDevice = registration->DriverObject->DriverExtension->AddDevice;
  85     registration->DriverObject->DriverExtension->AddDevice = PNP_AddDevice;
  86
  87     driver->minidriver = *registration;
  88     list_add_tail(&minidriver_list, &driver->entry);
  89
  90     list_init(&driver->device_list);
  91
  92     return STATUS_SUCCESS;
  93 }
  94
  95 static NTSTATUS WINAPI internalComplete(DEVICE_OBJECT *deviceObject, IRP *irp,
  96     void *context)
  97 {
  98     HANDLE event = context;
  99     SetEvent(event);
 100     return STATUS_MORE_PROCESSING_REQUIRED;
 101 }
 102
 103 NTSTATUS call_minidriver(ULONG code, DEVICE_OBJECT *device, void *in_buff, ULONG in_size, void *out_buff, ULONG out_size)
 104 {
 105     IRP *irp;
 106     IO_STATUS_BLOCK irp_status;
 107     NTSTATUS status;
 108     HANDLE event = CreateEventA(NULL, FALSE, FALSE, NULL);
 109
 110     irp = IoBuildDeviceIoControlRequest(code, device, in_buff, in_size,
 111         out_buff, out_size, TRUE, NULL, &irp_status);
 112
 113     IoSetCompletionRoutine(irp, internalComplete, event, TRUE, TRUE, TRUE);
 114     status = IoCallDriver(device, irp);
 115
 116     if (status == STATUS_PENDING)
 117         WaitForSingleObject(event, INFINITE);
 118
 119     status = irp->IoStatus.u.Status;
 120
 121     IoCompleteRequest(irp, IO_NO_INCREMENT );
 122     CloseHandle(event);
 123
 124     return status;
 125 }