reactos/drivers/storage/cdrom/cdrom.c

   1 /* $Id: cdrom.c,v 1.1 2002/01/31 15:00:00 ekohl Exp $
   2  *
   3  */
   4
   5 //  -------------------------------------------------------------------------
   6
   7 #include <ddk/ntddk.h>
   8
   9 #include "../include/scsi.h"
  10 #include "../include/class2.h"
  11 #include "../include/ntddscsi.h"
  12
  13 //#define NDEBUG
  14 #include <debug.h>
  15
  16 #define VERSION "V0.0.1"
  17
  18
  19
  20 BOOLEAN STDCALL
  21 CdromFindDevices(PDRIVER_OBJECT DriverObject,
  22                  PUNICODE_STRING RegistryPath,
  23                  PCLASS_INIT_DATA InitializationData,
  24                  PDEVICE_OBJECT PortDeviceObject,
  25                  ULONG PortNumber);
  26
  27
  28 NTSTATUS STDCALL
  29 CdromDeviceControl(IN PDEVICE_OBJECT DeviceObject,
  30                    IN PIRP Irp);
  31
  32 NTSTATUS STDCALL
  33 CdromShutdownFlush(IN PDEVICE_OBJECT DeviceObject,
  34                    IN PIRP Irp);
  35
  36
  37
  38
  39 //    DriverEntry
  40 //
  41 //  DESCRIPTION:
  42 //    This function initializes the driver, locates and claims
  43 //    hardware resources, and creates various NT objects needed
  44 //    to process I/O requests.
  45 //
  46 //  RUN LEVEL:
  47 //    PASSIVE_LEVEL
  48 //
  49 //  ARGUMENTS:
  50 //    IN  PDRIVER_OBJECT   DriverObject  System allocated Driver Object
  51 //                                       for this driver
  52 //    IN  PUNICODE_STRING  RegistryPath  Name of registry driver service
  53 //                                       key
  54 //
  55 //  RETURNS:
  56 //    NTSTATUS
  57
  58 NTSTATUS STDCALL
  59 DriverEntry(IN PDRIVER_OBJECT DriverObject,
  60             IN PUNICODE_STRING RegistryPath)
  61 {
  62   CLASS_INIT_DATA InitData;
  63
  64   DbgPrint("CD-ROM Class Driver %s\n",
  65            VERSION);
  66   DPRINT("RegistryPath '%wZ'\n",
  67          RegistryPath);
  68
  69   InitData.InitializationDataSize = sizeof(CLASS_INIT_DATA);
  70   InitData.DeviceExtensionSize = sizeof(DEVICE_EXTENSION);      // + sizeof(DISK_DATA)
  71   InitData.DeviceType = FILE_DEVICE_CD_ROM;
  72   InitData.DeviceCharacteristics = 0;
  73
  74   InitData.ClassError = NULL;                           // CdromProcessError;
  75   InitData.ClassReadWriteVerification = NULL;           // CdromReadWriteVerification;
  76   InitData.ClassFindDeviceCallBack = NULL;              // CdromDeviceVerification;
  77   InitData.ClassFindDevices = CdromFindDevices;
  78   InitData.ClassDeviceControl = CdromDeviceControl;
  79   InitData.ClassShutdownFlush = CdromShutdownFlush;
  80   InitData.ClassCreateClose = NULL;
  81   InitData.ClassStartIo = NULL;
  82
  83   return(ScsiClassInitialize(DriverObject,
  84                              RegistryPath,
  85                              &InitData));
  86 }
  87
  88
  89 //    CdromFindDevices
  90 //
  91 //  DESCRIPTION:
  92 //    This function searches for device that are attached to the given scsi port.
  93 //
  94 //  RUN LEVEL:
  95 //    PASSIVE_LEVEL
  96 //
  97 //  ARGUMENTS:
  98 //    IN  PDRIVER_OBJECT   DriverObject        System allocated Driver Object for this driver
  99 //    IN  PUNICODE_STRING  RegistryPath        Name of registry driver service key
 100 //    IN  PCLASS_INIT_DATA InitializationData  Pointer to the main initialization data
 101 //    IN PDEVICE_OBJECT    PortDeviceObject    Scsi port device object
 102 //    IN ULONG             PortNumber          Port number
 103 //
 104 //  RETURNS:
 105 //    TRUE: At least one disk drive was found
 106 //    FALSE: No disk drive found
 107 //
 108
 109 BOOLEAN STDCALL
 110 CdromFindDevices(PDRIVER_OBJECT DriverObject,
 111                  PUNICODE_STRING RegistryPath,
 112                  PCLASS_INIT_DATA InitializationData,
 113                  PDEVICE_OBJECT PortDeviceObject,
 114                  ULONG PortNumber)
 115 {
 116   PIO_SCSI_CAPABILITIES PortCapabilities;
 117   PSCSI_ADAPTER_BUS_INFO AdapterBusInfo;
 118   PCHAR Buffer;
 119 #if 0
 120   ULONG DeviceCount;
 121 #endif
 122   ULONG ScsiBus;
 123   NTSTATUS Status;
 124 //  PCONFIGURATION_INFORMATION ConfigInfo;
 125
 126   DPRINT1("CdromFindDevices() called.\n");
 127
 128   /* Get port capabilities */
 129   Status = ScsiClassGetCapabilities(PortDeviceObject,
 130                                     &PortCapabilities);
 131   if (!NT_SUCCESS(Status))
 132     {
 133       DPRINT("ScsiClassGetCapabilities() failed! (Status 0x%lX)\n", Status);
 134       return(FALSE);
 135     }
 136
 137   DPRINT1("MaximumTransferLength: %lu\n", PortCapabilities->MaximumTransferLength);
 138
 139   /* Get inquiry data */
 140   Status = ScsiClassGetInquiryData(PortDeviceObject,
 141                                    (PSCSI_ADAPTER_BUS_INFO *)&Buffer);
 142   if (!NT_SUCCESS(Status))
 143     {
 144       DPRINT("ScsiClassGetInquiryData() failed! (Status 0x%lX)\n", Status);
 145       return(FALSE);
 146     }
 147
 148   /* Check whether there are unclaimed devices */
 149   AdapterBusInfo = (PSCSI_ADAPTER_BUS_INFO)Buffer;
 150 #if 0
 151   DeviceCount = ScsiClassFindUnclaimedDevices(InitializationData,
 152                                               AdapterBusInfo);
 153   if (DeviceCount == 0)
 154     {
 155       DPRINT("ScsiClassFindUnclaimedDevices() returned 0!");
 156       return(FALSE);
 157     }
 158 #endif
 159
 160 //  ConfigInfo = IoGetConfigurationInformation();
 161 //  DPRINT1("Number of SCSI ports: %lu\n", ConfigInfo->ScsiPortCount);
 162
 163   /* Search each bus of this adapter */
 164   for (ScsiBus = 0; ScsiBus < (ULONG)AdapterBusInfo->NumberOfBuses; ScsiBus++)
 165     {
 166       DPRINT("Searching bus %lu\n", ScsiBus);
 167 #if 0
 168       lunInfo = (PVOID)(Buffer + adapterInfo->BusData[scsiBus].InquiryDataOffset);
 169
 170
 171       while (AdapterBusInfo->BusData[ScsiBus].InquiryDataOffset)
 172         {
 173
 174         }
 175 #endif
 176     }
 177
 178   ExFreePool(Buffer);
 179   ExFreePool(PortCapabilities);
 180
 181   return(TRUE);
 182 }
 183
 184
 185 //    CdromDeviceControl
 186 //
 187 //  DESCRIPTION:
 188 //    Answer requests for device control calls
 189 //
 190 //  RUN LEVEL:
 191 //    PASSIVE_LEVEL
 192 //
 193 //  ARGUMENTS:
 194 //    Standard dispatch arguments
 195 //
 196 //  RETURNS:
 197 //    NTSTATUS
 198 //
 199
 200 NTSTATUS STDCALL
 201 CdromDeviceControl(IN PDEVICE_OBJECT DeviceObject,
 202                    IN PIRP Irp)
 203 {
 204   DPRINT("CdromDeviceControl() called!\n");
 205
 206   Irp->IoStatus.Status = STATUS_SUCCESS;
 207   Irp->IoStatus.Information = 0;
 208   IoCompleteRequest(Irp, IO_NO_INCREMENT);
 209
 210   return(STATUS_SUCCESS);
 211 }
 212
 213
 214 //    CdromShutdownFlush
 215 //
 216 //  DESCRIPTION:
 217 //    Answer requests for shutdown and flush calls
 218 //
 219 //  RUN LEVEL:
 220 //    PASSIVE_LEVEL
 221 //
 222 //  ARGUMENTS:
 223 //    Standard dispatch arguments
 224 //
 225 //  RETURNS:
 226 //    NTSTATUS
 227 //
 228
 229 NTSTATUS STDCALL
 230 CdromShutdownFlush(IN PDEVICE_OBJECT DeviceObject,
 231                    IN PIRP Irp)
 232 {
 233   DPRINT("CdromShutdownFlush() called!\n");
 234
 235   Irp->IoStatus.Status = STATUS_SUCCESS;
 236   Irp->IoStatus.Information = 0;
 237   IoCompleteRequest(Irp, IO_NO_INCREMENT);
 238
 239   return(STATUS_SUCCESS);
 240 }
 241
 242
 243 /* EOF */