]>
Commit | Line | Data |
---|---|---|
878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | WinNtSerialIo.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Our DriverBinding member functions operate on the handles\r | |
19 | created by the NT Bus driver.\r | |
20 | \r | |
21 | Handle(1) - WinNtIo - DevicePath(1)\r | |
22 | \r | |
23 | If a serial port is added to the system this driver creates a new handle. \r | |
24 | The new handle is required, since the serial device must add an UART device\r | |
25 | pathnode.\r | |
26 | \r | |
27 | Handle(2) - SerialIo - DevicePath(1)\UART\r | |
28 | \r | |
29 | The driver then adds a gEfiWinNtSerialPortGuid as a protocol to Handle(1).\r | |
30 | The instance data for this protocol is the private data used to create\r | |
31 | Handle(2).\r | |
32 | \r | |
33 | Handle(1) - WinNtIo - DevicePath(1) - WinNtSerialPort\r | |
34 | \r | |
35 | If the driver is unloaded Handle(2) is removed from the system and \r | |
36 | gEfiWinNtSerialPortGuid is removed from Handle(1).\r | |
37 | \r | |
38 | Note: Handle(1) is any handle created by the Win NT Bus driver that is passed\r | |
39 | into the DriverBinding member functions of this driver. This driver requires\r | |
40 | a Handle(1) to contain a WinNtIo protocol, a DevicePath protocol, and \r | |
41 | the TypeGuid in the WinNtIo must be gEfiWinNtSerialPortGuid. \r | |
42 | \r | |
43 | If Handle(1) contains a gEfiWinNtSerialPortGuid protocol then the driver is \r | |
44 | loaded on the device.\r | |
45 | \r | |
46 | --*/\r | |
47 | \r | |
48 | #include "WinNtSerialIo.h"\r | |
49 | \r | |
50 | EFI_DRIVER_BINDING_PROTOCOL gWinNtSerialIoDriverBinding = {\r | |
51 | WinNtSerialIoDriverBindingSupported,\r | |
52 | WinNtSerialIoDriverBindingStart,\r | |
53 | WinNtSerialIoDriverBindingStop,\r | |
54 | 0x10,\r | |
55 | NULL,\r | |
56 | NULL\r | |
57 | };\r | |
58 | \r | |
59 | STATIC\r | |
60 | EFI_STATUS\r | |
61 | EFIAPI\r | |
62 | WinNtSerialIoDriverBindingSupported (\r | |
63 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
64 | IN EFI_HANDLE Handle,\r | |
65 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
66 | )\r | |
67 | /*++\r | |
68 | \r | |
69 | Routine Description:\r | |
70 | \r | |
71 | Arguments:\r | |
72 | \r | |
73 | Returns:\r | |
74 | \r | |
75 | None\r | |
76 | \r | |
77 | --*/\r | |
78 | // TODO: This - add argument and description to function comment\r | |
79 | // TODO: Handle - add argument and description to function comment\r | |
80 | // TODO: RemainingDevicePath - add argument and description to function comment\r | |
81 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
82 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
83 | {\r | |
84 | EFI_STATUS Status;\r | |
85 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
86 | EFI_WIN_NT_IO_PROTOCOL *WinNtIo;\r | |
87 | UART_DEVICE_PATH *UartNode;\r | |
88 | \r | |
89 | //\r | |
90 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
91 | //\r | |
92 | Status = gBS->OpenProtocol (\r | |
93 | Handle,\r | |
94 | &gEfiDevicePathProtocolGuid,\r | |
95 | &ParentDevicePath,\r | |
96 | This->DriverBindingHandle,\r | |
97 | Handle,\r | |
98 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
99 | );\r | |
100 | if (Status == EFI_ALREADY_STARTED) {\r | |
101 | return EFI_SUCCESS;\r | |
102 | }\r | |
103 | \r | |
104 | if (EFI_ERROR (Status)) {\r | |
105 | return Status;\r | |
106 | }\r | |
107 | \r | |
108 | gBS->CloseProtocol (\r | |
109 | Handle,\r | |
110 | &gEfiDevicePathProtocolGuid,\r | |
111 | This->DriverBindingHandle,\r | |
112 | Handle\r | |
113 | );\r | |
114 | \r | |
115 | Status = gBS->OpenProtocol (\r | |
116 | Handle,\r | |
117 | &gEfiWinNtIoProtocolGuid,\r | |
118 | &WinNtIo,\r | |
119 | This->DriverBindingHandle,\r | |
120 | Handle,\r | |
121 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
122 | );\r | |
123 | if (Status == EFI_ALREADY_STARTED) {\r | |
124 | return EFI_SUCCESS;\r | |
125 | }\r | |
126 | \r | |
127 | if (EFI_ERROR (Status)) {\r | |
128 | return Status;\r | |
129 | }\r | |
130 | \r | |
131 | //\r | |
132 | // Make sure that the WinNt Thunk Protocol is valid\r | |
133 | //\r | |
134 | if (WinNtIo->WinNtThunk->Signature != EFI_WIN_NT_THUNK_PROTOCOL_SIGNATURE) {\r | |
135 | Status = EFI_UNSUPPORTED;\r | |
136 | goto Error;\r | |
137 | }\r | |
138 | \r | |
139 | //\r | |
140 | // Check the GUID to see if this is a handle type the driver supports\r | |
141 | //\r | |
142 | if (!CompareGuid (WinNtIo->TypeGuid, &gEfiWinNtSerialPortGuid)) {\r | |
143 | Status = EFI_UNSUPPORTED;\r | |
144 | goto Error;\r | |
145 | }\r | |
146 | \r | |
147 | if (RemainingDevicePath != NULL) {\r | |
148 | Status = EFI_UNSUPPORTED;\r | |
149 | UartNode = (UART_DEVICE_PATH *) RemainingDevicePath;\r | |
150 | if (UartNode->Header.Type != MESSAGING_DEVICE_PATH ||\r | |
151 | UartNode->Header.SubType != MSG_UART_DP ||\r | |
152 | DevicePathNodeLength((EFI_DEVICE_PATH_PROTOCOL *)UartNode) != sizeof(UART_DEVICE_PATH)) {\r | |
153 | goto Error;\r | |
154 | }\r | |
155 | if (UartNode->BaudRate < 0 || UartNode->BaudRate > SERIAL_PORT_MAX_BAUD_RATE) {\r | |
156 | goto Error;\r | |
157 | }\r | |
158 | if (UartNode->Parity < NoParity || UartNode->Parity > SpaceParity) {\r | |
159 | goto Error;\r | |
160 | }\r | |
161 | if (UartNode->DataBits < 5 || UartNode->DataBits > 8) {\r | |
162 | goto Error;\r | |
163 | }\r | |
164 | if (UartNode->StopBits < OneStopBit || UartNode->StopBits > TwoStopBits) {\r | |
165 | goto Error;\r | |
166 | }\r | |
167 | if ((UartNode->DataBits == 5) && (UartNode->StopBits == TwoStopBits)) {\r | |
168 | goto Error;\r | |
169 | }\r | |
170 | if ((UartNode->DataBits >= 6) && (UartNode->DataBits <= 8) && (UartNode->StopBits == OneFiveStopBits)) {\r | |
171 | goto Error;\r | |
172 | }\r | |
173 | Status = EFI_SUCCESS;\r | |
174 | }\r | |
175 | \r | |
176 | Error:\r | |
177 | //\r | |
178 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
179 | //\r | |
180 | gBS->CloseProtocol (\r | |
181 | Handle,\r | |
182 | &gEfiWinNtIoProtocolGuid,\r | |
183 | This->DriverBindingHandle,\r | |
184 | Handle\r | |
185 | );\r | |
186 | \r | |
187 | return Status;\r | |
188 | }\r | |
189 | \r | |
190 | STATIC\r | |
191 | EFI_STATUS\r | |
192 | EFIAPI\r | |
193 | WinNtSerialIoDriverBindingStart (\r | |
194 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
195 | IN EFI_HANDLE Handle,\r | |
196 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
197 | )\r | |
198 | /*++\r | |
199 | \r | |
200 | Routine Description:\r | |
201 | \r | |
202 | Arguments:\r | |
203 | \r | |
204 | Returns:\r | |
205 | \r | |
206 | None\r | |
207 | \r | |
208 | --*/\r | |
209 | // TODO: This - add argument and description to function comment\r | |
210 | // TODO: Handle - add argument and description to function comment\r | |
211 | // TODO: RemainingDevicePath - add argument and description to function comment\r | |
212 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
213 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
214 | {\r | |
215 | EFI_STATUS Status;\r | |
216 | EFI_WIN_NT_IO_PROTOCOL *WinNtIo;\r | |
217 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
218 | HANDLE NtHandle;\r | |
219 | UART_DEVICE_PATH Node;\r | |
220 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
221 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r | |
222 | UINTN EntryCount;\r | |
223 | UINTN Index;\r | |
224 | EFI_SERIAL_IO_PROTOCOL *SerialIo;\r | |
225 | \r | |
226 | Private = NULL;\r | |
227 | NtHandle = INVALID_HANDLE_VALUE;\r | |
228 | \r | |
229 | //\r | |
230 | // Grab the protocols we need\r | |
231 | //\r | |
232 | Status = gBS->OpenProtocol (\r | |
233 | Handle,\r | |
234 | &gEfiDevicePathProtocolGuid,\r | |
235 | &ParentDevicePath,\r | |
236 | This->DriverBindingHandle,\r | |
237 | Handle,\r | |
238 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
239 | );\r | |
240 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
241 | return Status;\r | |
242 | }\r | |
243 | \r | |
244 | //\r | |
245 | // Grab the IO abstraction we need to get any work done\r | |
246 | //\r | |
247 | Status = gBS->OpenProtocol (\r | |
248 | Handle,\r | |
249 | &gEfiWinNtIoProtocolGuid,\r | |
250 | &WinNtIo,\r | |
251 | This->DriverBindingHandle,\r | |
252 | Handle,\r | |
253 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
254 | );\r | |
255 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
256 | gBS->CloseProtocol (\r | |
257 | Handle,\r | |
258 | &gEfiDevicePathProtocolGuid,\r | |
259 | This->DriverBindingHandle,\r | |
260 | Handle\r | |
261 | );\r | |
262 | return Status;\r | |
263 | }\r | |
264 | \r | |
265 | if (Status == EFI_ALREADY_STARTED) {\r | |
266 | \r | |
267 | if (RemainingDevicePath == NULL) {\r | |
268 | return EFI_SUCCESS;\r | |
269 | }\r | |
270 | \r | |
271 | //\r | |
272 | // Make sure a child handle does not already exist. This driver can only\r | |
273 | // produce one child per serial port.\r | |
274 | //\r | |
275 | Status = gBS->OpenProtocolInformation (\r | |
276 | Handle,\r | |
277 | &gEfiWinNtIoProtocolGuid,\r | |
278 | &OpenInfoBuffer,\r | |
279 | &EntryCount\r | |
280 | );\r | |
281 | if (EFI_ERROR (Status)) {\r | |
282 | return Status;\r | |
283 | }\r | |
284 | \r | |
285 | Status = EFI_ALREADY_STARTED;\r | |
286 | for (Index = 0; Index < EntryCount; Index++) {\r | |
287 | if (OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {\r | |
288 | Status = gBS->OpenProtocol (\r | |
289 | OpenInfoBuffer[Index].ControllerHandle,\r | |
290 | &gEfiSerialIoProtocolGuid,\r | |
291 | &SerialIo,\r | |
292 | This->DriverBindingHandle,\r | |
293 | Handle,\r | |
294 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
295 | );\r | |
296 | if (!EFI_ERROR (Status)) {\r | |
297 | CopyMem (&Node, RemainingDevicePath, sizeof (UART_DEVICE_PATH));\r | |
298 | Status = SerialIo->SetAttributes (\r | |
299 | SerialIo,\r | |
300 | Node.BaudRate,\r | |
301 | SerialIo->Mode->ReceiveFifoDepth,\r | |
302 | SerialIo->Mode->Timeout,\r | |
303 | Node.Parity,\r | |
304 | Node.DataBits,\r | |
305 | Node.StopBits\r | |
306 | );\r | |
307 | }\r | |
308 | break;\r | |
309 | }\r | |
310 | }\r | |
311 | \r | |
312 | gBS->FreePool (OpenInfoBuffer);\r | |
313 | return Status;\r | |
314 | }\r | |
315 | \r | |
316 | //\r | |
317 | // Check to see if we can access the hardware device. If it's Open in NT we\r | |
318 | // will not get access.\r | |
319 | //\r | |
320 | NtHandle = WinNtIo->WinNtThunk->CreateFile (\r | |
321 | WinNtIo->EnvString,\r | |
322 | GENERIC_READ | GENERIC_WRITE,\r | |
323 | 0,\r | |
324 | NULL,\r | |
325 | OPEN_EXISTING,\r | |
326 | 0,\r | |
327 | NULL\r | |
328 | );\r | |
329 | if (NtHandle == INVALID_HANDLE_VALUE) {\r | |
330 | Status = EFI_DEVICE_ERROR;\r | |
331 | goto Error;\r | |
332 | }\r | |
333 | \r | |
334 | //\r | |
335 | // Construct Private data\r | |
336 | //\r | |
337 | Status = gBS->AllocatePool (\r | |
338 | EfiBootServicesData,\r | |
339 | sizeof (WIN_NT_SERIAL_IO_PRIVATE_DATA),\r | |
340 | &Private\r | |
341 | );\r | |
342 | if (EFI_ERROR (Status)) {\r | |
343 | goto Error;\r | |
344 | }\r | |
345 | \r | |
346 | //\r | |
347 | // This signature must be valid before any member function is called\r | |
348 | //\r | |
349 | Private->Signature = WIN_NT_SERIAL_IO_PRIVATE_DATA_SIGNATURE;\r | |
350 | Private->NtHandle = NtHandle;\r | |
351 | Private->ControllerHandle = Handle;\r | |
352 | Private->Handle = NULL;\r | |
353 | Private->WinNtThunk = WinNtIo->WinNtThunk;\r | |
354 | Private->ParentDevicePath = ParentDevicePath;\r | |
355 | Private->ControllerNameTable = NULL;\r | |
356 | \r | |
357 | Private->SoftwareLoopbackEnable = FALSE;\r | |
358 | Private->HardwareLoopbackEnable = FALSE;\r | |
359 | Private->HardwareFlowControl = FALSE;\r | |
360 | Private->Fifo.First = 0;\r | |
361 | Private->Fifo.Last = 0;\r | |
362 | Private->Fifo.Surplus = SERIAL_MAX_BUFFER_SIZE;\r | |
363 | \r | |
364 | AddUnicodeString (\r | |
365 | "eng",\r | |
366 | gWinNtSerialIoComponentName.SupportedLanguages,\r | |
367 | &Private->ControllerNameTable,\r | |
368 | WinNtIo->EnvString\r | |
369 | );\r | |
370 | \r | |
371 | Private->SerialIo.Revision = SERIAL_IO_INTERFACE_REVISION;\r | |
372 | Private->SerialIo.Reset = WinNtSerialIoReset;\r | |
373 | Private->SerialIo.SetAttributes = WinNtSerialIoSetAttributes;\r | |
374 | Private->SerialIo.SetControl = WinNtSerialIoSetControl;\r | |
375 | Private->SerialIo.GetControl = WinNtSerialIoGetControl;\r | |
376 | Private->SerialIo.Write = WinNtSerialIoWrite;\r | |
377 | Private->SerialIo.Read = WinNtSerialIoRead;\r | |
378 | Private->SerialIo.Mode = &Private->SerialIoMode;\r | |
379 | \r | |
380 | if (RemainingDevicePath != NULL) {\r | |
381 | //\r | |
382 | // Match the configuration of the RemainingDevicePath. IsHandleSupported()\r | |
383 | // already checked to make sure the RemainingDevicePath contains settings\r | |
384 | // that we can support.\r | |
385 | //\r | |
386 | CopyMem (&Private->UartDevicePath, RemainingDevicePath, sizeof (UART_DEVICE_PATH));\r | |
387 | } else {\r | |
388 | //\r | |
389 | // Build the device path by appending the UART node to the ParentDevicePath\r | |
390 | // from the WinNtIo handle. The Uart setings are zero here, since\r | |
391 | // SetAttribute() will update them to match the default setings.\r | |
392 | //\r | |
393 | ZeroMem (&Private->UartDevicePath, sizeof (UART_DEVICE_PATH));\r | |
394 | Private->UartDevicePath.Header.Type = MESSAGING_DEVICE_PATH;\r | |
395 | Private->UartDevicePath.Header.SubType = MSG_UART_DP;\r | |
396 | SetDevicePathNodeLength ((EFI_DEVICE_PATH_PROTOCOL *) &Private->UartDevicePath, sizeof (UART_DEVICE_PATH));\r | |
397 | }\r | |
398 | \r | |
399 | //\r | |
400 | // Build the device path by appending the UART node to the ParentDevicePath\r | |
401 | // from the WinNtIo handle. The Uart setings are zero here, since\r | |
402 | // SetAttribute() will update them to match the current setings.\r | |
403 | //\r | |
404 | Private->DevicePath = AppendDevicePathNode (\r | |
405 | ParentDevicePath,\r | |
406 | (EFI_DEVICE_PATH_PROTOCOL *) &Private->UartDevicePath\r | |
407 | );\r | |
408 | if (Private->DevicePath == NULL) {\r | |
409 | Status = EFI_OUT_OF_RESOURCES;\r | |
410 | goto Error;\r | |
411 | }\r | |
412 | \r | |
413 | //\r | |
414 | // Fill in Serial I/O Mode structure based on either the RemainingDevicePath or defaults.\r | |
415 | //\r | |
416 | Private->SerialIoMode.ControlMask = SERIAL_CONTROL_MASK;\r | |
417 | Private->SerialIoMode.Timeout = SERIAL_TIMEOUT_DEFAULT;\r | |
418 | Private->SerialIoMode.BaudRate = Private->UartDevicePath.BaudRate;\r | |
419 | Private->SerialIoMode.ReceiveFifoDepth = SERIAL_FIFO_DEFAULT;\r | |
420 | Private->SerialIoMode.DataBits = Private->UartDevicePath.DataBits;\r | |
421 | Private->SerialIoMode.Parity = Private->UartDevicePath.Parity;\r | |
422 | Private->SerialIoMode.StopBits = Private->UartDevicePath.StopBits;\r | |
423 | \r | |
424 | //\r | |
425 | // Issue a reset to initialize the COM port\r | |
426 | //\r | |
427 | Status = Private->SerialIo.Reset (&Private->SerialIo);\r | |
428 | if (EFI_ERROR (Status)) {\r | |
429 | goto Error;\r | |
430 | }\r | |
431 | \r | |
432 | //\r | |
433 | // Create new child handle\r | |
434 | //\r | |
435 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
436 | &Private->Handle,\r | |
437 | &gEfiSerialIoProtocolGuid,\r | |
438 | &Private->SerialIo,\r | |
439 | &gEfiDevicePathProtocolGuid,\r | |
440 | Private->DevicePath,\r | |
441 | NULL\r | |
442 | );\r | |
443 | if (EFI_ERROR (Status)) {\r | |
444 | goto Error;\r | |
445 | }\r | |
446 | \r | |
447 | //\r | |
448 | // Open For Child Device\r | |
449 | //\r | |
450 | Status = gBS->OpenProtocol (\r | |
451 | Handle,\r | |
452 | &gEfiWinNtIoProtocolGuid,\r | |
453 | &WinNtIo,\r | |
454 | This->DriverBindingHandle,\r | |
455 | Private->Handle,\r | |
456 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
457 | );\r | |
458 | if (EFI_ERROR (Status)) {\r | |
459 | goto Error;\r | |
460 | }\r | |
461 | \r | |
462 | return EFI_SUCCESS;\r | |
463 | \r | |
464 | Error:\r | |
465 | //\r | |
466 | // Use the Stop() function to free all resources allocated in Start()\r | |
467 | //\r | |
468 | if (Private != NULL) {\r | |
469 | if (Private->Handle != NULL) {\r | |
470 | This->Stop (This, Handle, 1, &Private->Handle);\r | |
471 | } else {\r | |
472 | if (NtHandle != INVALID_HANDLE_VALUE) {\r | |
473 | Private->WinNtThunk->CloseHandle (NtHandle);\r | |
474 | }\r | |
475 | \r | |
476 | if (Private->DevicePath != NULL) {\r | |
477 | gBS->FreePool (Private->DevicePath);\r | |
478 | }\r | |
479 | \r | |
480 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
481 | \r | |
482 | gBS->FreePool (Private);\r | |
483 | }\r | |
484 | }\r | |
485 | \r | |
486 | This->Stop (This, Handle, 0, NULL);\r | |
487 | \r | |
488 | return Status;\r | |
489 | }\r | |
490 | \r | |
491 | STATIC\r | |
492 | EFI_STATUS\r | |
493 | EFIAPI\r | |
494 | WinNtSerialIoDriverBindingStop (\r | |
495 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
496 | IN EFI_HANDLE Handle,\r | |
497 | IN UINTN NumberOfChildren,\r | |
498 | IN EFI_HANDLE *ChildHandleBuffer\r | |
499 | )\r | |
500 | /*++\r | |
501 | \r | |
502 | Routine Description:\r | |
503 | \r | |
504 | TODO: Add function description\r | |
505 | \r | |
506 | Arguments:\r | |
507 | \r | |
508 | This - TODO: add argument description\r | |
509 | Handle - TODO: add argument description\r | |
510 | NumberOfChildren - TODO: add argument description\r | |
511 | ChildHandleBuffer - TODO: add argument description\r | |
512 | \r | |
513 | Returns:\r | |
514 | \r | |
515 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
516 | EFI_SUCCESS - TODO: Add description for return value\r | |
517 | \r | |
518 | --*/\r | |
519 | {\r | |
520 | EFI_STATUS Status;\r | |
521 | UINTN Index;\r | |
522 | BOOLEAN AllChildrenStopped;\r | |
523 | EFI_SERIAL_IO_PROTOCOL *SerialIo;\r | |
524 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
525 | EFI_WIN_NT_IO_PROTOCOL *WinNtIo;\r | |
526 | \r | |
527 | //\r | |
528 | // Complete all outstanding transactions to Controller.\r | |
529 | // Don't allow any new transaction to Controller to be started.\r | |
530 | //\r | |
531 | \r | |
532 | if (NumberOfChildren == 0) {\r | |
533 | //\r | |
534 | // Close the bus driver\r | |
535 | //\r | |
536 | Status = gBS->CloseProtocol (\r | |
537 | Handle,\r | |
538 | &gEfiWinNtIoProtocolGuid,\r | |
539 | This->DriverBindingHandle,\r | |
540 | Handle\r | |
541 | );\r | |
542 | Status = gBS->CloseProtocol (\r | |
543 | Handle,\r | |
544 | &gEfiDevicePathProtocolGuid,\r | |
545 | This->DriverBindingHandle,\r | |
546 | Handle\r | |
547 | );\r | |
548 | return Status;\r | |
549 | }\r | |
550 | \r | |
551 | AllChildrenStopped = TRUE;\r | |
552 | \r | |
553 | for (Index = 0; Index < NumberOfChildren; Index++) {\r | |
554 | Status = gBS->OpenProtocol (\r | |
555 | ChildHandleBuffer[Index],\r | |
556 | &gEfiSerialIoProtocolGuid,\r | |
557 | &SerialIo,\r | |
558 | This->DriverBindingHandle,\r | |
559 | Handle,\r | |
560 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
561 | );\r | |
562 | if (!EFI_ERROR (Status)) {\r | |
563 | Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (SerialIo);\r | |
564 | \r | |
565 | ASSERT (Private->Handle == ChildHandleBuffer[Index]);\r | |
566 | \r | |
567 | Status = gBS->CloseProtocol (\r | |
568 | Handle,\r | |
569 | &gEfiWinNtIoProtocolGuid,\r | |
570 | This->DriverBindingHandle,\r | |
571 | ChildHandleBuffer[Index]\r | |
572 | );\r | |
573 | \r | |
574 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
575 | ChildHandleBuffer[Index],\r | |
576 | &gEfiSerialIoProtocolGuid,\r | |
577 | &Private->SerialIo,\r | |
578 | &gEfiDevicePathProtocolGuid,\r | |
579 | Private->DevicePath,\r | |
580 | NULL\r | |
581 | );\r | |
582 | \r | |
583 | if (EFI_ERROR (Status)) {\r | |
584 | gBS->OpenProtocol (\r | |
585 | Handle,\r | |
586 | &gEfiWinNtIoProtocolGuid,\r | |
587 | (VOID **) &WinNtIo,\r | |
588 | This->DriverBindingHandle,\r | |
589 | ChildHandleBuffer[Index],\r | |
590 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
591 | );\r | |
592 | } else {\r | |
593 | Private->WinNtThunk->CloseHandle (Private->NtHandle);\r | |
594 | \r | |
595 | gBS->FreePool (Private->DevicePath);\r | |
596 | \r | |
597 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
598 | \r | |
599 | gBS->FreePool (Private);\r | |
600 | }\r | |
601 | }\r | |
602 | \r | |
603 | if (EFI_ERROR (Status)) {\r | |
604 | AllChildrenStopped = FALSE;\r | |
605 | }\r | |
606 | }\r | |
607 | \r | |
608 | if (!AllChildrenStopped) {\r | |
609 | return EFI_DEVICE_ERROR;\r | |
610 | }\r | |
611 | \r | |
612 | return EFI_SUCCESS;\r | |
613 | }\r | |
614 | \r | |
615 | //\r | |
616 | // Serial IO Protocol member functions\r | |
617 | //\r | |
618 | \r | |
619 | STATIC\r | |
620 | EFI_STATUS\r | |
621 | EFIAPI\r | |
622 | WinNtSerialIoReset (\r | |
623 | IN EFI_SERIAL_IO_PROTOCOL *This\r | |
624 | )\r | |
625 | /*++\r | |
626 | \r | |
627 | Routine Description:\r | |
628 | \r | |
629 | TODO: Add function description\r | |
630 | \r | |
631 | Arguments:\r | |
632 | \r | |
633 | This - TODO: add argument description\r | |
634 | \r | |
635 | Returns:\r | |
636 | \r | |
637 | TODO: add return values\r | |
638 | \r | |
639 | --*/\r | |
640 | {\r | |
641 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
642 | EFI_TPL Tpl;\r | |
643 | \r | |
644 | Tpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
645 | \r | |
646 | Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
647 | \r | |
648 | Private->WinNtThunk->PurgeComm (\r | |
649 | Private->NtHandle,\r | |
650 | PURGE_TXCLEAR | PURGE_RXCLEAR\r | |
651 | );\r | |
652 | \r | |
653 | gBS->RestoreTPL (Tpl);\r | |
654 | \r | |
655 | return This->SetAttributes (\r | |
656 | This,\r | |
657 | This->Mode->BaudRate,\r | |
658 | This->Mode->ReceiveFifoDepth,\r | |
659 | This->Mode->Timeout,\r | |
660 | This->Mode->Parity,\r | |
661 | (UINT8) This->Mode->DataBits,\r | |
662 | This->Mode->StopBits\r | |
663 | );\r | |
664 | }\r | |
665 | \r | |
666 | STATIC\r | |
667 | EFI_STATUS\r | |
668 | EFIAPI\r | |
669 | WinNtSerialIoSetAttributes (\r | |
670 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
671 | IN UINT64 BaudRate,\r | |
672 | IN UINT32 ReceiveFifoDepth,\r | |
673 | IN UINT32 Timeout,\r | |
674 | IN EFI_PARITY_TYPE Parity,\r | |
675 | IN UINT8 DataBits,\r | |
676 | IN EFI_STOP_BITS_TYPE StopBits\r | |
677 | )\r | |
678 | /*++\r | |
679 | \r | |
680 | Routine Description:\r | |
681 | \r | |
682 | This function is used to set the attributes.\r | |
683 | \r | |
684 | Arguments:\r | |
685 | \r | |
686 | This - A pointer to the EFI_SERIAL_IO_PROTOCOL structrue. \r | |
687 | BaudRate - The Baud rate of the serial device.\r | |
688 | ReceiveFifoDepth - The request depth of fifo on receive side.\r | |
689 | Timeout - the request timeout for a single charact.\r | |
690 | Parity - The type of parity used in serial device.\r | |
691 | DataBits - Number of deata bits used in serial device.\r | |
692 | StopBits - Number of stop bits used in serial device.\r | |
693 | \r | |
694 | Returns:\r | |
695 | Status code\r | |
696 | \r | |
697 | None\r | |
698 | \r | |
699 | --*/\r | |
700 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
701 | // TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
702 | // TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
703 | // TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
704 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
705 | // TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
706 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
707 | {\r | |
708 | EFI_STATUS Status;\r | |
709 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
710 | COMMTIMEOUTS PortTimeOuts;\r | |
711 | DWORD ConvertedTime;\r | |
712 | BOOL Result;\r | |
713 | EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r | |
714 | EFI_TPL Tpl;\r | |
715 | \r | |
716 | Tpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
717 | \r | |
718 | Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
719 | \r | |
720 | //\r | |
721 | // Some of our arguments have defaults if a null value is passed in, and\r | |
722 | // we must set the default values if a null argument is passed in.\r | |
723 | //\r | |
724 | if (BaudRate == 0) {\r | |
725 | BaudRate = SERIAL_BAUD_DEFAULT;\r | |
726 | }\r | |
727 | \r | |
728 | if (ReceiveFifoDepth == 0) {\r | |
729 | ReceiveFifoDepth = SERIAL_FIFO_DEFAULT;\r | |
730 | }\r | |
731 | \r | |
732 | if (Timeout == 0) {\r | |
733 | Timeout = SERIAL_TIMEOUT_DEFAULT;\r | |
734 | }\r | |
735 | \r | |
736 | if (Parity == DefaultParity) {\r | |
737 | Parity = NoParity;\r | |
738 | }\r | |
739 | \r | |
740 | if (DataBits == 0) {\r | |
741 | DataBits = SERIAL_DATABITS_DEFAULT;\r | |
742 | }\r | |
743 | \r | |
744 | if (StopBits == DefaultStopBits) {\r | |
745 | StopBits = OneStopBit;\r | |
746 | }\r | |
747 | //\r | |
748 | // See if the new attributes already match the current attributes\r | |
749 | //\r | |
750 | if (Private->UartDevicePath.BaudRate == BaudRate &&\r | |
751 | Private->UartDevicePath.DataBits == DataBits &&\r | |
752 | Private->UartDevicePath.Parity == Parity &&\r | |
753 | Private->UartDevicePath.StopBits == StopBits &&\r | |
754 | Private->SerialIoMode.ReceiveFifoDepth == ReceiveFifoDepth &&\r | |
755 | Private->SerialIoMode.Timeout == Timeout ) {\r | |
756 | gBS->RestoreTPL(Tpl);\r | |
757 | return EFI_SUCCESS;\r | |
758 | }\r | |
759 | \r | |
760 | //\r | |
761 | // Get current values from NT\r | |
762 | //\r | |
763 | ZeroMem (&Private->NtDCB, sizeof (DCB));\r | |
764 | Private->NtDCB.DCBlength = sizeof (DCB);\r | |
765 | \r | |
766 | if (!Private->WinNtThunk->GetCommState (Private->NtHandle, &Private->NtDCB)) {\r | |
767 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
768 | DEBUG ((EFI_D_ERROR, "SerialSetAttributes: GetCommState %d\n", Private->NtError));\r | |
769 | gBS->RestoreTPL (Tpl);\r | |
770 | return EFI_DEVICE_ERROR;\r | |
771 | }\r | |
772 | \r | |
773 | //\r | |
774 | // Map EFI com setting to NT\r | |
775 | //\r | |
776 | Private->NtDCB.BaudRate = ConvertBaud2Nt (BaudRate);\r | |
777 | Private->NtDCB.ByteSize = ConvertData2Nt (DataBits);\r | |
778 | Private->NtDCB.Parity = ConvertParity2Nt (Parity);\r | |
779 | Private->NtDCB.StopBits = ConvertStop2Nt (StopBits);\r | |
780 | \r | |
781 | Private->NtDCB.fBinary = TRUE;\r | |
782 | Private->NtDCB.fParity = Private->NtDCB.Parity == NOPARITY ? FALSE : TRUE;\r | |
783 | Private->NtDCB.fOutxCtsFlow = FALSE;\r | |
784 | Private->NtDCB.fOutxDsrFlow = FALSE;\r | |
785 | Private->NtDCB.fDtrControl = DTR_CONTROL_ENABLE;\r | |
786 | Private->NtDCB.fDsrSensitivity = FALSE;\r | |
787 | Private->NtDCB.fOutX = FALSE;\r | |
788 | Private->NtDCB.fInX = FALSE;\r | |
789 | Private->NtDCB.fRtsControl = RTS_CONTROL_ENABLE;\r | |
790 | Private->NtDCB.fNull = FALSE;\r | |
791 | \r | |
792 | //\r | |
793 | // Set new values\r | |
794 | //\r | |
795 | Result = Private->WinNtThunk->SetCommState (Private->NtHandle, &Private->NtDCB);\r | |
796 | if (!Result) {\r | |
797 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
798 | DEBUG ((EFI_D_ERROR, "SerialSetAttributes: SetCommState %d\n", Private->NtError));\r | |
799 | gBS->RestoreTPL (Tpl);\r | |
800 | return EFI_DEVICE_ERROR;\r | |
801 | }\r | |
802 | \r | |
803 | //\r | |
804 | // Set com port read/write timeout values\r | |
805 | //\r | |
806 | ConvertedTime = ConvertTime2Nt (Timeout);\r | |
807 | PortTimeOuts.ReadIntervalTimeout = MAXDWORD;\r | |
808 | PortTimeOuts.ReadTotalTimeoutMultiplier = 0;\r | |
809 | PortTimeOuts.ReadTotalTimeoutConstant = ConvertedTime;\r | |
810 | PortTimeOuts.WriteTotalTimeoutMultiplier = ConvertedTime == 0 ? 1 : ConvertedTime;\r | |
811 | PortTimeOuts.WriteTotalTimeoutConstant = 0;\r | |
812 | \r | |
813 | if (!Private->WinNtThunk->SetCommTimeouts (Private->NtHandle, &PortTimeOuts)) {\r | |
814 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
815 | DEBUG ((EFI_D_ERROR, "SerialSetAttributes: SetCommTimeouts %d\n", Private->NtError));\r | |
816 | gBS->RestoreTPL (Tpl);\r | |
817 | return EFI_DEVICE_ERROR;\r | |
818 | }\r | |
819 | \r | |
820 | //\r | |
821 | // Update mode\r | |
822 | //\r | |
823 | Private->SerialIoMode.BaudRate = BaudRate;\r | |
824 | Private->SerialIoMode.ReceiveFifoDepth = ReceiveFifoDepth;\r | |
825 | Private->SerialIoMode.Timeout = Timeout;\r | |
826 | Private->SerialIoMode.Parity = Parity;\r | |
827 | Private->SerialIoMode.DataBits = DataBits;\r | |
828 | Private->SerialIoMode.StopBits = StopBits;\r | |
829 | \r | |
830 | //\r | |
831 | // See if Device Path Node has actually changed\r | |
832 | //\r | |
833 | if (Private->UartDevicePath.BaudRate == BaudRate &&\r | |
834 | Private->UartDevicePath.DataBits == DataBits &&\r | |
835 | Private->UartDevicePath.Parity == Parity &&\r | |
836 | Private->UartDevicePath.StopBits == StopBits ) {\r | |
837 | gBS->RestoreTPL(Tpl);\r | |
838 | return EFI_SUCCESS;\r | |
839 | }\r | |
840 | \r | |
841 | //\r | |
842 | // Update the device path\r | |
843 | //\r | |
844 | Private->UartDevicePath.BaudRate = BaudRate;\r | |
845 | Private->UartDevicePath.DataBits = DataBits;\r | |
846 | Private->UartDevicePath.Parity = (UINT8) Parity;\r | |
847 | Private->UartDevicePath.StopBits = (UINT8) StopBits;\r | |
848 | \r | |
849 | NewDevicePath = AppendDevicePathNode (\r | |
850 | Private->ParentDevicePath,\r | |
851 | (EFI_DEVICE_PATH_PROTOCOL *) &Private->UartDevicePath\r | |
852 | );\r | |
853 | if (NewDevicePath == NULL) {\r | |
854 | gBS->RestoreTPL (Tpl);\r | |
855 | return EFI_DEVICE_ERROR;\r | |
856 | }\r | |
857 | \r | |
858 | if (Private->Handle != NULL) {\r | |
859 | Status = gBS->ReinstallProtocolInterface (\r | |
860 | Private->Handle,\r | |
861 | &gEfiDevicePathProtocolGuid,\r | |
862 | Private->DevicePath,\r | |
863 | NewDevicePath\r | |
864 | );\r | |
865 | if (EFI_ERROR (Status)) {\r | |
866 | gBS->RestoreTPL (Tpl);\r | |
867 | return Status;\r | |
868 | }\r | |
869 | }\r | |
870 | \r | |
871 | if (Private->DevicePath != NULL) {\r | |
872 | gBS->FreePool (Private->DevicePath);\r | |
873 | }\r | |
874 | \r | |
875 | Private->DevicePath = NewDevicePath;\r | |
876 | \r | |
877 | gBS->RestoreTPL (Tpl);\r | |
878 | \r | |
879 | return EFI_SUCCESS;\r | |
880 | }\r | |
881 | \r | |
882 | STATIC\r | |
883 | EFI_STATUS\r | |
884 | EFIAPI\r | |
885 | WinNtSerialIoSetControl (\r | |
886 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
887 | IN UINT32 Control\r | |
888 | )\r | |
889 | /*++\r | |
890 | \r | |
891 | Routine Description:\r | |
892 | \r | |
893 | TODO: Add function description\r | |
894 | \r | |
895 | Arguments:\r | |
896 | \r | |
897 | This - TODO: add argument description\r | |
898 | Control - TODO: add argument description\r | |
899 | \r | |
900 | Returns:\r | |
901 | \r | |
902 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
903 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
904 | EFI_SUCCESS - TODO: Add description for return value\r | |
905 | \r | |
906 | --*/\r | |
907 | {\r | |
908 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
909 | BOOL Result;\r | |
910 | DCB Dcb;\r | |
911 | EFI_TPL Tpl;\r | |
912 | \r | |
913 | Tpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
914 | \r | |
915 | Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
916 | \r | |
917 | Result = Private->WinNtThunk->GetCommState (Private->NtHandle, &Dcb);\r | |
918 | \r | |
919 | if (!Result) {\r | |
920 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
921 | DEBUG ((EFI_D_ERROR, "SerialSetControl: GetCommState %d\n", Private->NtError));\r | |
922 | gBS->RestoreTPL (Tpl);\r | |
923 | return EFI_DEVICE_ERROR;\r | |
924 | }\r | |
925 | \r | |
926 | Dcb.fRtsControl = RTS_CONTROL_DISABLE;\r | |
927 | Dcb.fDtrControl = DTR_CONTROL_DISABLE;\r | |
928 | Private->HardwareFlowControl = FALSE;\r | |
929 | Private->SoftwareLoopbackEnable = FALSE;\r | |
930 | Private->HardwareLoopbackEnable = FALSE;\r | |
931 | \r | |
932 | if (Control & EFI_SERIAL_REQUEST_TO_SEND) {\r | |
933 | Dcb.fRtsControl = RTS_CONTROL_ENABLE;\r | |
934 | }\r | |
935 | \r | |
936 | if (Control & EFI_SERIAL_DATA_TERMINAL_READY) {\r | |
937 | Dcb.fDtrControl = DTR_CONTROL_ENABLE;\r | |
938 | }\r | |
939 | \r | |
940 | if (Control & EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE) {\r | |
941 | Private->HardwareFlowControl = TRUE;\r | |
942 | }\r | |
943 | \r | |
944 | if (Control & EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE) {\r | |
945 | Private->SoftwareLoopbackEnable = TRUE;\r | |
946 | }\r | |
947 | \r | |
948 | if (Control & EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE) {\r | |
949 | Private->HardwareLoopbackEnable = TRUE;\r | |
950 | }\r | |
951 | \r | |
952 | Result = Private->WinNtThunk->SetCommState (\r | |
953 | Private->NtHandle,\r | |
954 | &Dcb\r | |
955 | );\r | |
956 | \r | |
957 | if (!Result) {\r | |
958 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
959 | DEBUG ((EFI_D_ERROR, "SerialSetControl: SetCommState %d\n", Private->NtError));\r | |
960 | gBS->RestoreTPL (Tpl);\r | |
961 | return EFI_DEVICE_ERROR;\r | |
962 | }\r | |
963 | \r | |
964 | gBS->RestoreTPL (Tpl);\r | |
965 | \r | |
966 | return EFI_SUCCESS;\r | |
967 | }\r | |
968 | \r | |
969 | STATIC\r | |
970 | EFI_STATUS\r | |
971 | EFIAPI\r | |
972 | WinNtSerialIoGetControl (\r | |
973 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
974 | OUT UINT32 *Control\r | |
975 | )\r | |
976 | /*++\r | |
977 | \r | |
978 | Routine Description:\r | |
979 | \r | |
980 | TODO: Add function description\r | |
981 | \r | |
982 | Arguments:\r | |
983 | \r | |
984 | This - TODO: add argument description\r | |
985 | Control - TODO: add argument description\r | |
986 | \r | |
987 | Returns:\r | |
988 | \r | |
989 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
990 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
991 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
992 | EFI_SUCCESS - TODO: Add description for return value\r | |
993 | \r | |
994 | --*/\r | |
995 | {\r | |
996 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
997 | DWORD ModemStatus;\r | |
998 | DWORD Errors;\r | |
999 | UINT32 Bits;\r | |
1000 | DCB Dcb;\r | |
1001 | EFI_TPL Tpl;\r | |
1002 | \r | |
1003 | Tpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
1004 | \r | |
1005 | Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1006 | \r | |
1007 | //\r | |
1008 | // Get modem status\r | |
1009 | //\r | |
1010 | if (!Private->WinNtThunk->GetCommModemStatus (Private->NtHandle, &ModemStatus)) {\r | |
1011 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
1012 | gBS->RestoreTPL (Tpl);\r | |
1013 | return EFI_DEVICE_ERROR;\r | |
1014 | }\r | |
1015 | \r | |
1016 | Bits = 0;\r | |
1017 | if (ModemStatus & MS_CTS_ON) {\r | |
1018 | Bits |= EFI_SERIAL_CLEAR_TO_SEND;\r | |
1019 | }\r | |
1020 | \r | |
1021 | if (ModemStatus & MS_DSR_ON) {\r | |
1022 | Bits |= EFI_SERIAL_DATA_SET_READY;\r | |
1023 | }\r | |
1024 | \r | |
1025 | if (ModemStatus & MS_RING_ON) {\r | |
1026 | Bits |= EFI_SERIAL_RING_INDICATE;\r | |
1027 | }\r | |
1028 | \r | |
1029 | if (ModemStatus & MS_RLSD_ON) {\r | |
1030 | Bits |= EFI_SERIAL_CARRIER_DETECT;\r | |
1031 | }\r | |
1032 | \r | |
1033 | //\r | |
1034 | // Get ctrl status\r | |
1035 | //\r | |
1036 | if (!Private->WinNtThunk->GetCommState (Private->NtHandle, &Dcb)) {\r | |
1037 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
1038 | DEBUG ((EFI_D_ERROR, "SerialGetControl: GetCommState %d\n", Private->NtError));\r | |
1039 | gBS->RestoreTPL (Tpl);\r | |
1040 | return EFI_DEVICE_ERROR;\r | |
1041 | }\r | |
1042 | \r | |
1043 | if (Dcb.fDtrControl == DTR_CONTROL_ENABLE) {\r | |
1044 | Bits |= EFI_SERIAL_DATA_TERMINAL_READY;\r | |
1045 | }\r | |
1046 | \r | |
1047 | if (Dcb.fRtsControl == RTS_CONTROL_ENABLE) {\r | |
1048 | Bits |= EFI_SERIAL_REQUEST_TO_SEND;\r | |
1049 | }\r | |
1050 | \r | |
1051 | if (Private->HardwareFlowControl) {\r | |
1052 | Bits |= EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;\r | |
1053 | }\r | |
1054 | \r | |
1055 | if (Private->SoftwareLoopbackEnable) {\r | |
1056 | Bits |= EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE;\r | |
1057 | }\r | |
1058 | \r | |
1059 | if (Private->HardwareLoopbackEnable) {\r | |
1060 | Bits |= EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE;\r | |
1061 | }\r | |
1062 | \r | |
1063 | //\r | |
1064 | // Get input buffer status\r | |
1065 | //\r | |
1066 | if (!Private->WinNtThunk->ClearCommError (Private->NtHandle, &Errors, &Private->NtComStatus)) {\r | |
1067 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
1068 | DEBUG ((EFI_D_ERROR, "SerialGetControl: ClearCommError %d\n", Private->NtError));\r | |
1069 | gBS->RestoreTPL (Tpl);\r | |
1070 | return EFI_DEVICE_ERROR;\r | |
1071 | }\r | |
1072 | \r | |
1073 | if (Private->NtComStatus.cbInQue == 0) {\r | |
1074 | Bits |= EFI_SERIAL_INPUT_BUFFER_EMPTY;\r | |
1075 | }\r | |
1076 | \r | |
1077 | *Control = Bits;\r | |
1078 | \r | |
1079 | gBS->RestoreTPL (Tpl);\r | |
1080 | \r | |
1081 | return EFI_SUCCESS;\r | |
1082 | }\r | |
1083 | \r | |
1084 | STATIC\r | |
1085 | EFI_STATUS\r | |
1086 | EFIAPI\r | |
1087 | WinNtSerialIoWrite (\r | |
1088 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
1089 | IN OUT UINTN *BufferSize,\r | |
1090 | IN VOID *Buffer\r | |
1091 | )\r | |
1092 | /*++\r | |
1093 | \r | |
1094 | Routine Description:\r | |
1095 | \r | |
1096 | TODO: Add function description\r | |
1097 | \r | |
1098 | Arguments:\r | |
1099 | \r | |
1100 | This - TODO: add argument description\r | |
1101 | BufferSize - TODO: add argument description\r | |
1102 | Buffer - TODO: add argument description\r | |
1103 | \r | |
1104 | Returns:\r | |
1105 | \r | |
1106 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1107 | EFI_SUCCESS - TODO: Add description for return value\r | |
1108 | \r | |
1109 | --*/\r | |
1110 | {\r | |
1111 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
1112 | UINT8 *ByteBuffer;\r | |
1113 | UINTN TotalBytesWritten;\r | |
1114 | DWORD BytesToGo;\r | |
1115 | DWORD BytesWritten;\r | |
1116 | BOOL Result;\r | |
1117 | UINT32 Index;\r | |
1118 | UINT32 Control;\r | |
1119 | EFI_TPL Tpl;\r | |
1120 | \r | |
1121 | Tpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
1122 | \r | |
1123 | Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1124 | \r | |
1125 | ByteBuffer = (UINT8 *) Buffer;\r | |
1126 | TotalBytesWritten = 0;\r | |
1127 | \r | |
1128 | if (Private->SoftwareLoopbackEnable || Private->HardwareLoopbackEnable) {\r | |
1129 | for (Index = 0; Index < *BufferSize; Index++) {\r | |
1130 | if (IsaSerialFifoAdd (&Private->Fifo, ByteBuffer[Index]) == EFI_SUCCESS) {\r | |
1131 | TotalBytesWritten++;\r | |
1132 | } else {\r | |
1133 | break;\r | |
1134 | }\r | |
1135 | }\r | |
1136 | } else {\r | |
1137 | BytesToGo = (DWORD) (*BufferSize);\r | |
1138 | \r | |
1139 | do {\r | |
1140 | if (Private->HardwareFlowControl) {\r | |
1141 | //\r | |
1142 | // Send RTS\r | |
1143 | //\r | |
1144 | WinNtSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1145 | Control |= EFI_SERIAL_REQUEST_TO_SEND;\r | |
1146 | WinNtSerialIoSetControl (&Private->SerialIo, Control);\r | |
1147 | }\r | |
1148 | \r | |
1149 | //\r | |
1150 | // Do the write\r | |
1151 | //\r | |
1152 | Result = Private->WinNtThunk->WriteFile (\r | |
1153 | Private->NtHandle,\r | |
1154 | &ByteBuffer[TotalBytesWritten],\r | |
1155 | BytesToGo,\r | |
1156 | &BytesWritten,\r | |
1157 | NULL\r | |
1158 | );\r | |
1159 | \r | |
1160 | if (Private->HardwareFlowControl) {\r | |
1161 | //\r | |
1162 | // Assert RTS\r | |
1163 | //\r | |
1164 | WinNtSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1165 | Control &= ~ (UINT32) EFI_SERIAL_REQUEST_TO_SEND;\r | |
1166 | WinNtSerialIoSetControl (&Private->SerialIo, Control);\r | |
1167 | }\r | |
1168 | \r | |
1169 | TotalBytesWritten += BytesWritten;\r | |
1170 | BytesToGo -= BytesWritten;\r | |
1171 | if (!Result) {\r | |
1172 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
1173 | DEBUG ((EFI_D_ERROR, "SerialWrite: FileWrite %d\n", Private->NtError));\r | |
1174 | *BufferSize = TotalBytesWritten;\r | |
1175 | gBS->RestoreTPL (Tpl);\r | |
1176 | return EFI_DEVICE_ERROR;\r | |
1177 | }\r | |
1178 | } while (BytesToGo > 0);\r | |
1179 | }\r | |
1180 | \r | |
1181 | *BufferSize = TotalBytesWritten;\r | |
1182 | \r | |
1183 | gBS->RestoreTPL (Tpl);\r | |
1184 | \r | |
1185 | return EFI_SUCCESS;\r | |
1186 | }\r | |
1187 | \r | |
1188 | STATIC\r | |
1189 | EFI_STATUS\r | |
1190 | EFIAPI\r | |
1191 | WinNtSerialIoRead (\r | |
1192 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
1193 | IN OUT UINTN *BufferSize,\r | |
1194 | OUT VOID *Buffer\r | |
1195 | )\r | |
1196 | /*++\r | |
1197 | \r | |
1198 | Routine Description:\r | |
1199 | \r | |
1200 | TODO: Add function description\r | |
1201 | \r | |
1202 | Arguments:\r | |
1203 | \r | |
1204 | This - TODO: add argument description\r | |
1205 | BufferSize - TODO: add argument description\r | |
1206 | Buffer - TODO: add argument description\r | |
1207 | \r | |
1208 | Returns:\r | |
1209 | \r | |
1210 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1211 | \r | |
1212 | --*/\r | |
1213 | {\r | |
1214 | WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r | |
1215 | BOOL Result;\r | |
1216 | DWORD BytesRead;\r | |
1217 | EFI_STATUS Status;\r | |
1218 | UINT32 Index;\r | |
1219 | UINT8 Data;\r | |
1220 | UINT32 Control;\r | |
1221 | EFI_TPL Tpl;\r | |
1222 | \r | |
1223 | Tpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
1224 | \r | |
1225 | Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1226 | \r | |
1227 | //\r | |
1228 | // Do the read\r | |
1229 | //\r | |
1230 | if (Private->SoftwareLoopbackEnable || Private->HardwareLoopbackEnable) {\r | |
1231 | for (Index = 0, BytesRead = 0; Index < *BufferSize; Index++) {\r | |
1232 | if (IsaSerialFifoRemove (&Private->Fifo, &Data) == EFI_SUCCESS) {\r | |
1233 | ((UINT8 *) Buffer)[Index] = Data;\r | |
1234 | BytesRead++;\r | |
1235 | } else {\r | |
1236 | break;\r | |
1237 | }\r | |
1238 | }\r | |
1239 | } else {\r | |
1240 | if (Private->HardwareFlowControl) {\r | |
1241 | WinNtSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1242 | Control |= EFI_SERIAL_DATA_TERMINAL_READY;\r | |
1243 | WinNtSerialIoSetControl (&Private->SerialIo, Control);\r | |
1244 | }\r | |
1245 | \r | |
1246 | Result = Private->WinNtThunk->ReadFile (\r | |
1247 | Private->NtHandle,\r | |
1248 | Buffer,\r | |
1249 | (DWORD) *BufferSize,\r | |
1250 | &BytesRead,\r | |
1251 | NULL\r | |
1252 | );\r | |
1253 | \r | |
1254 | if (Private->HardwareFlowControl) {\r | |
1255 | WinNtSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1256 | Control &= ~ (UINT32) EFI_SERIAL_DATA_TERMINAL_READY;\r | |
1257 | WinNtSerialIoSetControl (&Private->SerialIo, Control);\r | |
1258 | }\r | |
1259 | \r | |
1260 | if (!Result) {\r | |
1261 | Private->NtError = Private->WinNtThunk->GetLastError ();\r | |
1262 | gBS->RestoreTPL (Tpl);\r | |
1263 | return EFI_DEVICE_ERROR;\r | |
1264 | }\r | |
1265 | }\r | |
1266 | \r | |
1267 | if (BytesRead != *BufferSize) {\r | |
1268 | Status = EFI_TIMEOUT;\r | |
1269 | } else {\r | |
1270 | Status = EFI_SUCCESS;\r | |
1271 | }\r | |
1272 | \r | |
1273 | *BufferSize = (UINTN) BytesRead;\r | |
1274 | \r | |
1275 | gBS->RestoreTPL (Tpl);\r | |
1276 | \r | |
1277 | return Status;\r | |
1278 | }\r | |
1279 | \r | |
1280 | BOOLEAN\r | |
1281 | IsaSerialFifoFull (\r | |
1282 | IN SERIAL_DEV_FIFO *Fifo\r | |
1283 | )\r | |
1284 | /*++\r | |
1285 | \r | |
1286 | Routine Description:\r | |
1287 | Detect whether specific FIFO is full or not\r | |
1288 | \r | |
1289 | Arguments:\r | |
1290 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1291 | \r | |
1292 | Returns:\r | |
1293 | TRUE: the FIFO is full\r | |
1294 | FALSE: the FIFO is not full\r | |
1295 | \r | |
1296 | --*/\r | |
1297 | {\r | |
1298 | if (Fifo->Surplus == 0) {\r | |
1299 | return TRUE;\r | |
1300 | }\r | |
1301 | \r | |
1302 | return FALSE;\r | |
1303 | }\r | |
1304 | \r | |
1305 | BOOLEAN\r | |
1306 | IsaSerialFifoEmpty (\r | |
1307 | IN SERIAL_DEV_FIFO *Fifo\r | |
1308 | )\r | |
1309 | /*++\r | |
1310 | \r | |
1311 | Routine Description:\r | |
1312 | Detect whether specific FIFO is empty or not\r | |
1313 | \r | |
1314 | Arguments:\r | |
1315 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1316 | \r | |
1317 | Returns:\r | |
1318 | TRUE: the FIFO is empty\r | |
1319 | FALSE: the FIFO is not empty\r | |
1320 | \r | |
1321 | --*/\r | |
1322 | {\r | |
1323 | if (Fifo->Surplus == SERIAL_MAX_BUFFER_SIZE) {\r | |
1324 | return TRUE;\r | |
1325 | }\r | |
1326 | \r | |
1327 | return FALSE;\r | |
1328 | }\r | |
1329 | \r | |
1330 | EFI_STATUS\r | |
1331 | IsaSerialFifoAdd (\r | |
1332 | IN SERIAL_DEV_FIFO *Fifo,\r | |
1333 | IN UINT8 Data\r | |
1334 | )\r | |
1335 | /*++\r | |
1336 | \r | |
1337 | Routine Description:\r | |
1338 | Add data to specific FIFO\r | |
1339 | \r | |
1340 | Arguments:\r | |
1341 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1342 | Data UINT8: the data added to FIFO \r | |
1343 | \r | |
1344 | Returns:\r | |
1345 | EFI_SUCCESS: Add data to specific FIFO successfully\r | |
1346 | EFI_OUT_RESOURCE: Failed to add data because FIFO is already full \r | |
1347 | \r | |
1348 | --*/\r | |
1349 | // TODO: EFI_OUT_OF_RESOURCES - add return value to function comment\r | |
1350 | {\r | |
1351 | //\r | |
1352 | // if FIFO full can not add data\r | |
1353 | //\r | |
1354 | if (IsaSerialFifoFull (Fifo)) {\r | |
1355 | return EFI_OUT_OF_RESOURCES;\r | |
1356 | }\r | |
1357 | \r | |
1358 | //\r | |
1359 | // FIFO is not full can add data\r | |
1360 | //\r | |
1361 | Fifo->Data[Fifo->Last] = Data;\r | |
1362 | Fifo->Surplus--;\r | |
1363 | Fifo->Last++;\r | |
1364 | if (Fifo->Last >= SERIAL_MAX_BUFFER_SIZE) {\r | |
1365 | Fifo->Last = 0;\r | |
1366 | }\r | |
1367 | \r | |
1368 | return EFI_SUCCESS;\r | |
1369 | }\r | |
1370 | \r | |
1371 | EFI_STATUS\r | |
1372 | IsaSerialFifoRemove (\r | |
1373 | IN SERIAL_DEV_FIFO *Fifo,\r | |
1374 | OUT UINT8 *Data\r | |
1375 | )\r | |
1376 | /*++\r | |
1377 | \r | |
1378 | Routine Description:\r | |
1379 | Remove data from specific FIFO\r | |
1380 | \r | |
1381 | Arguments:\r | |
1382 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1383 | Data UINT8*: the data removed from FIFO \r | |
1384 | \r | |
1385 | Returns:\r | |
1386 | EFI_SUCCESS: Remove data from specific FIFO successfully\r | |
1387 | EFI_OUT_RESOURCE: Failed to remove data because FIFO is empty\r | |
1388 | \r | |
1389 | --*/\r | |
1390 | // TODO: EFI_OUT_OF_RESOURCES - add return value to function comment\r | |
1391 | {\r | |
1392 | //\r | |
1393 | // if FIFO is empty, no data can remove\r | |
1394 | //\r | |
1395 | if (IsaSerialFifoEmpty (Fifo)) {\r | |
1396 | return EFI_OUT_OF_RESOURCES;\r | |
1397 | }\r | |
1398 | \r | |
1399 | //\r | |
1400 | // FIFO is not empty, can remove data\r | |
1401 | //\r | |
1402 | *Data = Fifo->Data[Fifo->First];\r | |
1403 | Fifo->Surplus++;\r | |
1404 | Fifo->First++;\r | |
1405 | if (Fifo->First >= SERIAL_MAX_BUFFER_SIZE) {\r | |
1406 | Fifo->First = 0;\r | |
1407 | }\r | |
1408 | \r | |
1409 | return EFI_SUCCESS;\r | |
1410 | }\r |