summaryrefslogtreecommitdiff
path: root/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyIde.c
blob: 4d520f8a3288b33a6ca17f5cf0f098c7f1186cf8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
/** @file
  Collect IDE information from Native EFI Driver

Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>

This program and the accompanying materials
are licensed and made available under the terms and conditions
of the BSD License which accompanies this distribution.  The
full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include "LegacyBiosInterface.h"

BOOLEAN mIdeDataBuiltFlag = FALSE;

/**
  Collect IDE Inquiry data from the IDE disks

  @param  Private        Legacy BIOS Instance data
  @param  HddInfo        Hdd Information
  @param  Flag           Reconnect IdeController or not

  @retval EFI_SUCCESS    It should always work.

**/
EFI_STATUS
LegacyBiosBuildIdeData (
  IN  LEGACY_BIOS_INSTANCE      *Private,
  IN  HDD_INFO                  **HddInfo,
  IN  UINT16                    Flag
  )
{
  EFI_STATUS                Status;
  EFI_HANDLE                IdeController;
  UINTN                     HandleCount;
  EFI_HANDLE                *HandleBuffer;
  UINTN                     Index;
  EFI_DISK_INFO_PROTOCOL    *DiskInfo;
  UINT32                    IdeChannel;
  UINT32                    IdeDevice;
  UINT32                    Size;
  UINT8                     *InquiryData;
  UINT32                    InquiryDataSize;
  HDD_INFO                  *LocalHddInfo;
  UINT32                    PciIndex;
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;
  EFI_DEVICE_PATH_PROTOCOL  *DevicePathNode;
  EFI_DEVICE_PATH_PROTOCOL  *TempDevicePathNode;
  PCI_DEVICE_PATH           *PciDevicePath;

  //
  // Only build data once
  // We have a problem with GetBbsInfo in that it can be invoked two
  // places. Once in BDS, when all EFI drivers are connected and once in
  // LegacyBoot after all EFI drivers are disconnected causing this routine
  // to hang. In LegacyBoot this function is also called before EFI drivers
  // are disconnected.
  // Cases covered
  //    GetBbsInfo invoked in BDS. Both invocations in LegacyBoot ignored.
  //    GetBbsInfo not invoked in BDS. First invocation of this function
  //       proceeds normally and second via GetBbsInfo ignored.
  //
  PciDevicePath = NULL;
  LocalHddInfo  = *HddInfo;
  Status = Private->LegacyBiosPlatform->GetPlatformHandle (
                                          Private->LegacyBiosPlatform,
                                          EfiGetPlatformIdeHandle,
                                          0,
                                          &HandleBuffer,
                                          &HandleCount,
                                          (VOID *) &LocalHddInfo
                                          );
  if (!EFI_ERROR (Status)) {
    IdeController = HandleBuffer[0];    
    //
    // Force IDE drive spin up!
    //
    if (Flag != 0) {
      gBS->DisconnectController (
            IdeController,
            NULL,
            NULL
            );
    }

    gBS->ConnectController (IdeController, NULL, NULL, FALSE);

    //
    // Do GetIdeHandle twice since disconnect/reconnect will switch to native mode
    // And GetIdeHandle will switch to Legacy mode, if required.
    //
    Private->LegacyBiosPlatform->GetPlatformHandle (
                                  Private->LegacyBiosPlatform,
                                  EfiGetPlatformIdeHandle,
                                  0,
                                  &HandleBuffer,
                                  &HandleCount,
                                  (VOID *) &LocalHddInfo
                                  );
  }

  mIdeDataBuiltFlag = TRUE;

  //
  // Get Identity command from all drives
  //
  gBS->LocateHandleBuffer (
        ByProtocol,
        &gEfiDiskInfoProtocolGuid,
        NULL,
        &HandleCount,
        &HandleBuffer
        );

  Private->IdeDriveCount = (UINT8) HandleCount;
  for (Index = 0; Index < HandleCount; Index++) {
    Status = gBS->HandleProtocol (
                    HandleBuffer[Index],
                    &gEfiDiskInfoProtocolGuid,
                    (VOID **) &DiskInfo
                    );
    ASSERT_EFI_ERROR (Status);

    if (CompareGuid (&DiskInfo->Interface, &gEfiDiskInfoIdeInterfaceGuid)) {
      //
      //  Locate which PCI device
      //
      Status = gBS->HandleProtocol (
                      HandleBuffer[Index],
                      &gEfiDevicePathProtocolGuid,
                      (VOID *) &DevicePath
                      );
      ASSERT_EFI_ERROR (Status);

      DevicePathNode = DevicePath;
      while (!IsDevicePathEnd (DevicePathNode)) {
        TempDevicePathNode = NextDevicePathNode (DevicePathNode);
        if ((DevicePathType (DevicePathNode) == HARDWARE_DEVICE_PATH) &&
              ( DevicePathSubType (DevicePathNode) == HW_PCI_DP) &&
              ( DevicePathType(TempDevicePathNode) == MESSAGING_DEVICE_PATH) &&
              ( DevicePathSubType(TempDevicePathNode) == MSG_ATAPI_DP) ) {
          PciDevicePath = (PCI_DEVICE_PATH *) DevicePathNode;
          break;
        }
        DevicePathNode = NextDevicePathNode (DevicePathNode);
      }

      if (PciDevicePath == NULL) {
        continue;
      }

      //
      // Find start of PCI device in HddInfo. The assumption of the data
      // structure is 2 controllers(channels) per PCI device and each
      // controller can have 2 drives(devices).
      // HddInfo[PciIndex+0].[0] = Channel[0].Device[0] Primary Master
      // HddInfo[PciIndex+0].[1] = Channel[0].Device[1] Primary Slave
      // HddInfo[PciIndex+1].[0] = Channel[1].Device[0] Secondary Master
      // HddInfo[PciIndex+1].[1] = Channel[1].Device[1] Secondary Slave
      // @bug eventually need to pass in max number of entries
      // for end of for loop
      //
      for (PciIndex = 0; PciIndex < 8; PciIndex++) {
        if ((PciDevicePath->Device == LocalHddInfo[PciIndex].Device) &&
            (PciDevicePath->Function == LocalHddInfo[PciIndex].Function)
            ) {
          break;
        }
      }

      if (PciIndex == 8) {
        continue;
      }

      Status = DiskInfo->WhichIde (DiskInfo, &IdeChannel, &IdeDevice);
      if (!EFI_ERROR (Status)) {
        Size = sizeof (ATAPI_IDENTIFY);
        DiskInfo->Identify (
                    DiskInfo,
                    &LocalHddInfo[PciIndex + IdeChannel].IdentifyDrive[IdeDevice],
                    &Size
                    );
        if (IdeChannel == 0) {
          LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_PRIMARY;
        } else if (IdeChannel == 1) {
          LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SECONDARY;
        }

        InquiryData     = NULL;
        InquiryDataSize = 0;
        Status = DiskInfo->Inquiry (
                             DiskInfo,
                             NULL,
                             &InquiryDataSize
                             );
        if (Status == EFI_BUFFER_TOO_SMALL) {
          InquiryData = (UINT8 *) AllocatePool (
                                  InquiryDataSize
                                  );
          if (InquiryData != NULL) {
            Status = DiskInfo->Inquiry (
                                 DiskInfo,
                                 InquiryData,
                                 &InquiryDataSize
                                 );
          }
        } else {
          Status = EFI_DEVICE_ERROR;
        }

        //
        // If ATAPI device then Inquiry will pass and ATA fail.
        //
        if (!EFI_ERROR (Status)) {
          ASSERT (InquiryData != NULL);
          //
          // If IdeDevice = 0 then set master bit, else slave bit
          //
          if (IdeDevice == 0) {
            if ((InquiryData[0] & 0x1f) == 0x05) {
              LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_ATAPI_CDROM;
            } else if ((InquiryData[0] & 0x1f) == 0x00) {
              LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_ATAPI_ZIPDISK;
            }
          } else {
            if ((InquiryData[0] & 0x1f) == 0x05) {
              LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_ATAPI_CDROM;
            } else if ((InquiryData[0] & 0x1f) == 0x00) {
              LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_ATAPI_ZIPDISK;
            }
          }
          FreePool (InquiryData);
        } else {
          if (IdeDevice == 0) {
            LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_IDE;
          } else {
            LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_IDE;
          }
        }
      }
    }
  }

  if (HandleBuffer != NULL) {
    FreePool (HandleBuffer);
  }

  return EFI_SUCCESS;
}


/**
  If the IDE channel is in compatibility (legacy) mode, remove all
  PCI I/O BAR addresses from the controller.

  @param  IdeController  The handle of target IDE controller


**/
VOID
InitLegacyIdeController (
  IN EFI_HANDLE                        IdeController
  )
{
  EFI_PCI_IO_PROTOCOL               *PciIo;
  UINT32                            IOBarClear;
  EFI_STATUS                        Status;
  PCI_TYPE00                        PciData;

  //
  // If the IDE channel is in compatibility (legacy) mode, remove all
  // PCI I/O BAR addresses from the controller.  Some software gets
  // confused if an IDE controller is in compatibility (legacy) mode
  // and has PCI I/O resources allocated
  //
  Status = gBS->HandleProtocol (
                  IdeController, 
                  &gEfiPciIoProtocolGuid, 
                  (VOID **)&PciIo
                  );
  if (EFI_ERROR (Status)) {
    return ;
  }

  Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0, sizeof (PciData), &PciData);
  if (EFI_ERROR (Status)) {
    return ;
  }

  //
  // Check whether this is IDE
  //
  if ((PciData.Hdr.ClassCode[2] != PCI_CLASS_MASS_STORAGE) ||
      (PciData.Hdr.ClassCode[1] != PCI_CLASS_MASS_STORAGE_IDE)) {
    return ;
  }

  //
  // Clear bar for legacy IDE
  //
  IOBarClear = 0x00;
  if ((PciData.Hdr.ClassCode[0] & IDE_PI_REGISTER_PNE) == 0) {
    PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x10, 1, &IOBarClear);
    PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x14, 1, &IOBarClear);
  }
  if ((PciData.Hdr.ClassCode[0] & IDE_PI_REGISTER_SNE) == 0) {
    PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x18, 1, &IOBarClear);
    PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x1C, 1, &IOBarClear);
  }

  return ;
}