]>
Commit | Line | Data |
---|---|---|
1 | /** @file\r | |
2 | The implementation of EFI_EXT_SCSI_PASS_THRU_PROTOCOL.\r | |
3 | \r | |
4 | Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "IScsiImpl.h"\r | |
16 | \r | |
17 | EFI_EXT_SCSI_PASS_THRU_PROTOCOL gIScsiExtScsiPassThruProtocolTemplate = {\r | |
18 | NULL,\r | |
19 | IScsiExtScsiPassThruFunction,\r | |
20 | IScsiExtScsiPassThruGetNextTargetLun,\r | |
21 | IScsiExtScsiPassThruBuildDevicePath,\r | |
22 | IScsiExtScsiPassThruGetTargetLun,\r | |
23 | IScsiExtScsiPassThruResetChannel,\r | |
24 | IScsiExtScsiPassThruResetTargetLun,\r | |
25 | IScsiExtScsiPassThruGetNextTarget\r | |
26 | };\r | |
27 | \r | |
28 | \r | |
29 | /**\r | |
30 | Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel.\r | |
31 | This function supports both blocking I/O and nonblocking I/O. The blocking I/O\r | |
32 | functionality is required, and the nonblocking I/O functionality is optional. \r | |
33 | \r | |
34 | @param[in] This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r | |
35 | @param[in] Target The Target is an array of size TARGET_MAX_BYTES and it\r | |
36 | represents the id of the SCSI device to send the SCSI\r | |
37 | Request Packet. Each transport driver may choose to\r | |
38 | utilize a subset of this size to suit the needs\r | |
39 | of transport target representation. For example, a \r | |
40 | Fibre Channel driver may use only 8 bytes (WWN)\r | |
41 | to represent an FC target.\r | |
42 | @param[in] Lun The LUN of the SCSI device to send the SCSI Request Packet.\r | |
43 | @param[in, out] Packet A pointer to the SCSI Request Packet to send to the\r | |
44 | SCSI device specified by Target and Lun. \r | |
45 | @param[in] Event If nonblocking I/O is not supported then Event is ignored,\r | |
46 | and blocking I/O is performed. If Event is NULL, then\r | |
47 | blocking I/O is performed. If Event is not NULL and non\r | |
48 | blocking I/O is supported, then nonblocking I/O is performed,\r | |
49 | and Event will be signaled when the SCSI Request Packet\r | |
50 | completes.\r | |
51 | \r | |
52 | @retval EFI_SUCCESS The SCSI Request Packet was sent by the host. For\r | |
53 | bi-directional commands, InTransferLength bytes \r | |
54 | were transferred from InDataBuffer.\r | |
55 | For write and bi-directional commands, OutTransferLength\r | |
56 | bytes were transferred by OutDataBuffer.\r | |
57 | @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was not executed.\r | |
58 | The number of bytes that could be transferred is\r | |
59 | returned in InTransferLength. For write and\r | |
60 | bi-directional commands, OutTransferLength bytes\r | |
61 | were transferred by OutDataBuffer.\r | |
62 | @retval EFI_NOT_READY The SCSI Request Packet could not be sent because\r | |
63 | there are too many SCSI Request Packets already\r | |
64 | queued. The caller may retry later.\r | |
65 | @retval EFI_DEVICE_ERROR A device error occurred while attempting to send\r | |
66 | the SCSI Request Packet. \r | |
67 | @retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket,\r | |
68 | are invalid.\r | |
69 | @retval EFI_UNSUPPORTED The command described by the SCSI Request Packet\r | |
70 | is not supported by the host adapter.\r | |
71 | This includes the case of Bi-directional SCSI\r | |
72 | commands not supported by the implementation.\r | |
73 | The SCSI Request Packet was not sent,\r | |
74 | so no additional status information is available.\r | |
75 | @retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI\r | |
76 | Request Packet to execute.\r | |
77 | \r | |
78 | **/\r | |
79 | EFI_STATUS\r | |
80 | EFIAPI\r | |
81 | IScsiExtScsiPassThruFunction (\r | |
82 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r | |
83 | IN UINT8 *Target,\r | |
84 | IN UINT64 Lun,\r | |
85 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,\r | |
86 | IN EFI_EVENT Event OPTIONAL\r | |
87 | )\r | |
88 | {\r | |
89 | if (Target[0] != 0) {\r | |
90 | return EFI_INVALID_PARAMETER;\r | |
91 | }\r | |
92 | \r | |
93 | if ((Packet == NULL) || (Packet->Cdb == NULL)) {\r | |
94 | return EFI_INVALID_PARAMETER;\r | |
95 | }\r | |
96 | \r | |
97 | return IScsiExecuteScsiCommand (This, Target, Lun, Packet);\r | |
98 | }\r | |
99 | \r | |
100 | \r | |
101 | /**\r | |
102 | Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on\r | |
103 | a SCSI channel. These can either be the list SCSI devices that are actually\r | |
104 | present on the SCSI channel, or the list of legal Target Ids and LUNs for the\r | |
105 | SCSI channel. Regardless, the caller of this function must probe the Target ID \r | |
106 | and LUN returned to see if a SCSI device is actually present at that location \r | |
107 | on the SCSI channel. \r | |
108 | \r | |
109 | @param[in] This The EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r | |
110 | @param[in, out] Target On input, a pointer to the Target ID of a SCSI\r | |
111 | device present on the SCSI channel. On output, a\r | |
112 | pointer to the Target ID of the next SCSI device\r | |
113 | present on a SCSI channel. An input value of\r | |
114 | 0xFFFFFFFF retrieves the Target ID of the first\r | |
115 | SCSI device present on a SCSI channel.\r | |
116 | @param[in, out] Lun On input, a pointer to the LUN of a SCSI device\r | |
117 | present on the SCSI channel. On output, a pointer\r | |
118 | to the LUN of the next SCSI device present on a\r | |
119 | SCSI channel.\r | |
120 | \r | |
121 | @retval EFI_SUCCESS The Target ID and Lun of the next SCSI device on\r | |
122 | the SCSI channel was returned in Target and Lun.\r | |
123 | @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI\r | |
124 | channel.\r | |
125 | @retval EFI_INVALID_PARAMETER Target is not 0xFFFFFFFF,and Target and Lun were\r | |
126 | not returned on a previous call to\r | |
127 | GetNextDevice().\r | |
128 | \r | |
129 | **/\r | |
130 | EFI_STATUS\r | |
131 | EFIAPI\r | |
132 | IScsiExtScsiPassThruGetNextTargetLun (\r | |
133 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r | |
134 | IN OUT UINT8 **Target,\r | |
135 | IN OUT UINT64 *Lun\r | |
136 | )\r | |
137 | {\r | |
138 | ISCSI_DRIVER_DATA *Private;\r | |
139 | ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData;\r | |
140 | UINT8 TargetId[TARGET_MAX_BYTES];\r | |
141 | \r | |
142 | Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This);\r | |
143 | ConfigNvData = &Private->Session->ConfigData->SessionConfigData;\r | |
144 | \r | |
145 | if ((*Target)[0] == 0 && (CompareMem (Lun, ConfigNvData->BootLun, sizeof (UINT64)) == 0)) {\r | |
146 | //\r | |
147 | // Only one <Target, Lun> pair per iSCSI Driver instance.\r | |
148 | //\r | |
149 | return EFI_NOT_FOUND;\r | |
150 | }\r | |
151 | \r | |
152 | SetMem (TargetId, TARGET_MAX_BYTES, 0xFF);\r | |
153 | if (CompareMem (*Target, TargetId, TARGET_MAX_BYTES) == 0) {\r | |
154 | (*Target)[0] = 0;\r | |
155 | CopyMem (Lun, ConfigNvData->BootLun, sizeof (UINT64));\r | |
156 | \r | |
157 | return EFI_SUCCESS;\r | |
158 | }\r | |
159 | \r | |
160 | return EFI_INVALID_PARAMETER;\r | |
161 | }\r | |
162 | \r | |
163 | \r | |
164 | /**\r | |
165 | Allocate and build a device path node for a SCSI device on a SCSI channel.\r | |
166 | \r | |
167 | @param[in] This Protocol instance pointer.\r | |
168 | @param[in] Target The Target ID of the SCSI device for which a\r | |
169 | device path node is to be allocated and built.\r | |
170 | @param[in] Lun The LUN of the SCSI device for which a device\r | |
171 | path node is to be allocated and built.\r | |
172 | @param[in, out] DevicePath A pointer to a single device path node that\r | |
173 | describes the SCSI device specified by Target and\r | |
174 | Lun. This function is responsible for allocating\r | |
175 | the buffer DevicePath with the boot service\r | |
176 | AllocatePool(). It is the caller's\r | |
177 | responsibility to free DevicePath when the caller\r | |
178 | is finished with DevicePath.\r | |
179 | \r | |
180 | @retval EFI_SUCCESS The device path node that describes the SCSI\r | |
181 | device specified by Target and Lun was allocated\r | |
182 | and returned in DevicePath.\r | |
183 | @retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does\r | |
184 | not exist on the SCSI channel.\r | |
185 | @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r | |
186 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate\r | |
187 | DevicePath.\r | |
188 | \r | |
189 | **/\r | |
190 | EFI_STATUS\r | |
191 | EFIAPI\r | |
192 | IScsiExtScsiPassThruBuildDevicePath (\r | |
193 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r | |
194 | IN UINT8 *Target,\r | |
195 | IN UINT64 Lun,\r | |
196 | IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r | |
197 | )\r | |
198 | {\r | |
199 | ISCSI_DRIVER_DATA *Private;\r | |
200 | ISCSI_SESSION *Session;\r | |
201 | ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData;\r | |
202 | ISCSI_CHAP_AUTH_CONFIG_NVDATA *AuthConfig;\r | |
203 | EFI_DEV_PATH *Node;\r | |
204 | UINTN DevPathNodeLen;\r | |
205 | \r | |
206 | if ((DevicePath == NULL)) {\r | |
207 | return EFI_INVALID_PARAMETER;\r | |
208 | }\r | |
209 | \r | |
210 | if (Target[0] != 0) {\r | |
211 | return EFI_NOT_FOUND;\r | |
212 | }\r | |
213 | \r | |
214 | Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This);\r | |
215 | Session = Private->Session;\r | |
216 | ConfigNvData = &Session->ConfigData->SessionConfigData;\r | |
217 | AuthConfig = Session->AuthData.CHAP.AuthConfig;\r | |
218 | \r | |
219 | if (CompareMem (&Lun, ConfigNvData->BootLun, sizeof (UINT64)) != 0) {\r | |
220 | return EFI_NOT_FOUND;\r | |
221 | }\r | |
222 | \r | |
223 | DevPathNodeLen = sizeof (ISCSI_DEVICE_PATH) + AsciiStrLen (ConfigNvData->TargetName) + 1;\r | |
224 | Node = AllocateZeroPool (DevPathNodeLen);\r | |
225 | if (Node == NULL) {\r | |
226 | return EFI_OUT_OF_RESOURCES;\r | |
227 | }\r | |
228 | \r | |
229 | Node->DevPath.Type = MESSAGING_DEVICE_PATH;\r | |
230 | Node->DevPath.SubType = MSG_ISCSI_DP;\r | |
231 | SetDevicePathNodeLength (&Node->DevPath, DevPathNodeLen);\r | |
232 | \r | |
233 | //\r | |
234 | // 0 for TCP, others are reserved.\r | |
235 | //\r | |
236 | Node->Iscsi.NetworkProtocol = 0;\r | |
237 | \r | |
238 | Node->Iscsi.LoginOption = 0;\r | |
239 | \r | |
240 | switch (Session->AuthType) {\r | |
241 | case ISCSI_AUTH_TYPE_NONE:\r | |
242 | Node->Iscsi.LoginOption |= 0x0800;\r | |
243 | break;\r | |
244 | \r | |
245 | case ISCSI_AUTH_TYPE_CHAP:\r | |
246 | //\r | |
247 | // Bit12: 0=CHAP_BI, 1=CHAP_UNI\r | |
248 | //\r | |
249 | if (AuthConfig->CHAPType == ISCSI_CHAP_UNI) {\r | |
250 | Node->Iscsi.LoginOption |= 0x1000;\r | |
251 | }\r | |
252 | break;\r | |
253 | \r | |
254 | default:\r | |
255 | break;\r | |
256 | }\r | |
257 | \r | |
258 | CopyMem (&Node->Iscsi.Lun, ConfigNvData->BootLun, sizeof (UINT64));\r | |
259 | Node->Iscsi.TargetPortalGroupTag = Session->TargetPortalGroupTag;\r | |
260 | AsciiStrCpy ((CHAR8 *) Node + sizeof (ISCSI_DEVICE_PATH), ConfigNvData->TargetName);\r | |
261 | \r | |
262 | *DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) Node;\r | |
263 | \r | |
264 | return EFI_SUCCESS;\r | |
265 | }\r | |
266 | \r | |
267 | \r | |
268 | /**\r | |
269 | Translate a device path node to a Target ID and LUN.\r | |
270 | \r | |
271 | @param[in] This Protocol instance pointer.\r | |
272 | @param[in] DevicePath A pointer to the device path node that describes\r | |
273 | a SCSI device on the SCSI channel.\r | |
274 | @param[out] Target A pointer to the Target ID of a SCSI device on\r | |
275 | the SCSI channel.\r | |
276 | @param[out] Lun A pointer to the LUN of a SCSI device on the SCSI\r | |
277 | channel.\r | |
278 | \r | |
279 | @retval EFI_SUCCESS DevicePath was successfully translated to a\r | |
280 | Target ID and LUN, and they were returned in\r | |
281 | Target and Lun.\r | |
282 | @retval EFI_INVALID_PARAMETER DevicePath/Target/Lun is NULL.\r | |
283 | @retval EFI_UNSUPPORTED This driver does not support the device path node\r | |
284 | type in DevicePath.\r | |
285 | @retval EFI_NOT_FOUND A valid translation does not exist from DevicePath \r | |
286 | to a TargetID and LUN.\r | |
287 | \r | |
288 | **/\r | |
289 | EFI_STATUS\r | |
290 | EFIAPI\r | |
291 | IScsiExtScsiPassThruGetTargetLun (\r | |
292 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r | |
293 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r | |
294 | OUT UINT8 **Target,\r | |
295 | OUT UINT64 *Lun\r | |
296 | )\r | |
297 | {\r | |
298 | ISCSI_DRIVER_DATA *Private;\r | |
299 | ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData;\r | |
300 | \r | |
301 | if ((DevicePath == NULL) || (Target == NULL) || (Lun == NULL)) {\r | |
302 | return EFI_INVALID_PARAMETER;\r | |
303 | }\r | |
304 | \r | |
305 | if ((DevicePath->Type != MESSAGING_DEVICE_PATH) ||\r | |
306 | (DevicePath->SubType != MSG_ISCSI_DP) ||\r | |
307 | (DevicePathNodeLength (DevicePath) <= sizeof (ISCSI_DEVICE_PATH))\r | |
308 | ) {\r | |
309 | return EFI_UNSUPPORTED;\r | |
310 | }\r | |
311 | \r | |
312 | Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This);\r | |
313 | ConfigNvData = &Private->Session->ConfigData->SessionConfigData;\r | |
314 | \r | |
315 | SetMem (*Target, TARGET_MAX_BYTES, 0xFF);\r | |
316 | (*Target)[0] = 0;\r | |
317 | \r | |
318 | if (AsciiStrCmp (ConfigNvData->TargetName, (CHAR8 *) DevicePath + sizeof (ISCSI_DEVICE_PATH)) != 0) {\r | |
319 | return EFI_UNSUPPORTED;\r | |
320 | }\r | |
321 | \r | |
322 | CopyMem (Lun, ConfigNvData->BootLun, sizeof (UINT64));\r | |
323 | \r | |
324 | return EFI_SUCCESS;\r | |
325 | }\r | |
326 | \r | |
327 | \r | |
328 | /**\r | |
329 | Resets a SCSI channel. This operation resets all the SCSI devices connected to\r | |
330 | the SCSI channel.\r | |
331 | \r | |
332 | @param[in] This Protocol instance pointer.\r | |
333 | \r | |
334 | @retval EFI_UNSUPPORTED It is not supported.\r | |
335 | \r | |
336 | **/\r | |
337 | EFI_STATUS\r | |
338 | EFIAPI\r | |
339 | IScsiExtScsiPassThruResetChannel (\r | |
340 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This\r | |
341 | )\r | |
342 | {\r | |
343 | return EFI_UNSUPPORTED;\r | |
344 | }\r | |
345 | \r | |
346 | \r | |
347 | /**\r | |
348 | Resets a SCSI device that is connected to a SCSI channel.\r | |
349 | \r | |
350 | @param[in] This Protocol instance pointer.\r | |
351 | @param[in] Target The Target ID of the SCSI device to reset.\r | |
352 | @param[in] Lun The LUN of the SCSI device to reset.\r | |
353 | \r | |
354 | @retval EFI_UNSUPPORTED It is not supported.\r | |
355 | \r | |
356 | **/\r | |
357 | EFI_STATUS\r | |
358 | EFIAPI\r | |
359 | IScsiExtScsiPassThruResetTargetLun (\r | |
360 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r | |
361 | IN UINT8 *Target,\r | |
362 | IN UINT64 Lun\r | |
363 | )\r | |
364 | {\r | |
365 | return EFI_UNSUPPORTED;\r | |
366 | }\r | |
367 | \r | |
368 | /**\r | |
369 | Retrieve the list of legal Target IDs for SCSI devices on a SCSI channel. \r | |
370 | \r | |
371 | @param[in] This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL\r | |
372 | instance.\r | |
373 | @param[in, out] Target (TARGET_MAX_BYTES) of a SCSI device present on\r | |
374 | the SCSI channel. On output, a pointer to the\r | |
375 | Target ID (an array of TARGET_MAX_BYTES) of the\r | |
376 | next SCSI device present on a SCSI channel.\r | |
377 | An input value of 0xF(all bytes in the array are 0xF)\r | |
378 | in the Target array retrieves the Target ID of the\r | |
379 | first SCSI device present on a SCSI channel. \r | |
380 | \r | |
381 | @retval EFI_SUCCESS The Target ID of the next SCSI device on the SCSI\r | |
382 | channel was returned in Target.\r | |
383 | @retval EFI_INVALID_PARAMETER Target or Lun is NULL.\r | |
384 | @retval EFI_TIMEOUT Target array is not all 0xF, and Target was not\r | |
385 | returned on a previous call to GetNextTarget().\r | |
386 | @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.\r | |
387 | \r | |
388 | **/\r | |
389 | EFI_STATUS\r | |
390 | EFIAPI\r | |
391 | IScsiExtScsiPassThruGetNextTarget (\r | |
392 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r | |
393 | IN OUT UINT8 **Target\r | |
394 | )\r | |
395 | {\r | |
396 | UINT8 TargetId[TARGET_MAX_BYTES];\r | |
397 | \r | |
398 | SetMem (TargetId, TARGET_MAX_BYTES, 0xFF);\r | |
399 | \r | |
400 | if (CompareMem (*Target, TargetId, TARGET_MAX_BYTES) == 0) {\r | |
401 | (*Target)[0] = 0;\r | |
402 | return EFI_SUCCESS;\r | |
403 | } else if ((*Target)[0] == 0) {\r | |
404 | return EFI_NOT_FOUND;\r | |
405 | } else {\r | |
406 | return EFI_INVALID_PARAMETER;\r | |
407 | }\r | |
408 | }\r | |
409 | \r |