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804405e7 | 1 | /*++\r |
2 | \r | |
f9b8ab56 HT |
3 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r |
4 | This program and the accompanying materials\r | |
804405e7 | 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 | UnixSerialIo.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) - UnixIo - 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 gEfiUnixSerialPortGuid 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) - UnixIo - DevicePath(1) - UnixSerialPort\r | |
34 | \r | |
35 | If the driver is unloaded Handle(2) is removed from the system and\r | |
36 | gEfiUnixSerialPortGuid 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 UnixIo protocol, a DevicePath protocol, and\r | |
41 | the TypeGuid in the UnixIo must be gEfiUnixSerialPortGuid.\r | |
42 | \r | |
43 | If Handle(1) contains a gEfiUnixSerialPortGuid protocol then the driver is\r | |
44 | loaded on the device.\r | |
45 | \r | |
46 | --*/\r | |
47 | \r | |
48 | #include "UnixSerialIo.h"\r | |
804405e7 | 49 | \r |
50 | EFI_DRIVER_BINDING_PROTOCOL gUnixSerialIoDriverBinding = {\r | |
51 | UnixSerialIoDriverBindingSupported,\r | |
52 | UnixSerialIoDriverBindingStart,\r | |
53 | UnixSerialIoDriverBindingStop,\r | |
54 | 0xa,\r | |
55 | NULL,\r | |
56 | NULL\r | |
57 | };\r | |
58 | \r | |
526bf28c RN |
59 | /**\r |
60 | Check the device path node whether it's the Flow Control node or not.\r | |
61 | \r | |
62 | @param[in] FlowControl The device path node to be checked.\r | |
63 | \r | |
64 | @retval TRUE It's the Flow Control node.\r | |
65 | @retval FALSE It's not.\r | |
66 | \r | |
67 | **/\r | |
68 | BOOLEAN\r | |
69 | IsUartFlowControlNode (\r | |
70 | IN UART_FLOW_CONTROL_DEVICE_PATH *FlowControl\r | |
71 | )\r | |
72 | {\r | |
73 | return (BOOLEAN) (\r | |
74 | (DevicePathType (FlowControl) == MESSAGING_DEVICE_PATH) &&\r | |
75 | (DevicePathSubType (FlowControl) == MSG_VENDOR_DP) &&\r | |
76 | (CompareGuid (&FlowControl->Guid, &gEfiUartDevicePathGuid))\r | |
77 | );\r | |
78 | }\r | |
79 | \r | |
80 | /**\r | |
81 | Check the device path node whether it contains Flow Control node or not.\r | |
82 | \r | |
83 | @param[in] DevicePath The device path to be checked.\r | |
84 | \r | |
85 | @retval TRUE It contains the Flow Control node.\r | |
86 | @retval FALSE It doesn't.\r | |
87 | \r | |
88 | **/\r | |
89 | BOOLEAN\r | |
90 | ContainsFlowControl (\r | |
91 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
92 | )\r | |
93 | {\r | |
94 | while (!IsDevicePathEnd (DevicePath)) {\r | |
95 | if (IsUartFlowControlNode ((UART_FLOW_CONTROL_DEVICE_PATH *) DevicePath)) {\r | |
96 | return TRUE;\r | |
97 | }\r | |
98 | DevicePath = NextDevicePathNode (DevicePath);\r | |
99 | }\r | |
100 | \r | |
101 | return FALSE;\r | |
102 | }\r | |
103 | \r | |
804405e7 | 104 | UINTN\r |
105 | ConvertBaud2Unix (\r | |
106 | UINT64 BaudRate\r | |
107 | )\r | |
108 | {\r | |
109 | switch (BaudRate) {\r | |
110 | case 0:\r | |
d0c3acd4 | 111 | return 0; // Don't use B0 as it is also used in EFI #includes as a name so termios.h #define \r |
112 | // can break the build.\r | |
804405e7 | 113 | case 50:\r |
114 | return B50;\r | |
115 | case 75:\r | |
116 | return B75;\r | |
117 | case 110:\r | |
118 | return B110;\r | |
119 | case 134:\r | |
120 | return B134;\r | |
121 | case 150:\r | |
122 | return B150;\r | |
123 | case 200:\r | |
124 | return B200;\r | |
125 | case 300:\r | |
126 | return B300;\r | |
127 | case 600:\r | |
128 | return B600;\r | |
129 | case 1200:\r | |
130 | return B1200;\r | |
131 | case 1800:\r | |
132 | return B1800;\r | |
133 | case 2400:\r | |
134 | return B2400;\r | |
135 | case 4800:\r | |
136 | return B4800;\r | |
137 | case 9600:\r | |
138 | return B9600;\r | |
139 | case 19200:\r | |
140 | return B19200;\r | |
141 | case 38400:\r | |
142 | return B38400;\r | |
143 | case 57600:\r | |
144 | return B57600;\r | |
145 | case 115200:\r | |
146 | return B115200;\r | |
147 | case 230400:\r | |
148 | return B230400;\r | |
149 | case 460800:\r | |
150 | return B460800;\r | |
151 | case 500000:\r | |
152 | return B500000;\r | |
153 | case 576000:\r | |
154 | return B576000;\r | |
155 | case 921600:\r | |
156 | return B921600;\r | |
157 | case 1000000:\r | |
158 | return B1000000;\r | |
159 | case 1152000:\r | |
160 | return B1152000;\r | |
161 | case 1500000:\r | |
162 | return B1500000;\r | |
163 | case 2000000:\r | |
164 | return B2000000;\r | |
165 | case 2500000:\r | |
166 | return B2500000;\r | |
167 | case 3000000:\r | |
168 | return B3000000;\r | |
169 | case 3500000:\r | |
170 | return B3500000;\r | |
171 | case 4000000:\r | |
172 | return B4000000;\r | |
173 | case __MAX_BAUD:\r | |
174 | default:\r | |
175 | DEBUG ((EFI_D_ERROR, "Invalid Baud Rate Parameter!\r\n"));\r | |
176 | }\r | |
177 | return -1;\r | |
178 | }\r | |
179 | \r | |
804405e7 | 180 | UINTN\r |
181 | ConvertByteSize2Unix (\r | |
182 | UINT8 DataBit\r | |
183 | )\r | |
184 | {\r | |
185 | switch (DataBit) {\r | |
186 | case 5:\r | |
187 | return CS5;\r | |
188 | case 6:\r | |
189 | return CS6;\r | |
190 | case 7:\r | |
191 | return CS7;\r | |
192 | case 8:\r | |
193 | return CS8;\r | |
194 | default:\r | |
195 | DEBUG ((EFI_D_ERROR, "Invalid Data Size Parameter!\r\n"));\r | |
196 | }\r | |
197 | return -1;\r | |
198 | }\r | |
199 | \r | |
804405e7 | 200 | VOID\r |
201 | ConvertParity2Unix (\r | |
202 | struct termios *Options,\r | |
203 | EFI_PARITY_TYPE Parity\r | |
204 | )\r | |
205 | {\r | |
206 | switch (Parity) {\r | |
207 | case NoParity:\r | |
208 | Options->c_cflag &= ~PARENB;\r | |
209 | break;\r | |
210 | case EvenParity:\r | |
211 | Options->c_cflag |= PARENB;\r | |
212 | break;\r | |
213 | case OddParity:\r | |
214 | Options->c_cflag |= PARENB;\r | |
215 | Options->c_cflag |= PARODD;\r | |
216 | break;\r | |
217 | case MarkParity:\r | |
218 | Options->c_cflag = PARENB | CMSPAR | PARODD;\r | |
219 | break;\r | |
220 | case SpaceParity:\r | |
221 | Options->c_cflag |= PARENB | CMSPAR;\r | |
222 | Options->c_cflag &= ~PARODD;\r | |
223 | break;\r | |
224 | default:\r | |
225 | DEBUG ((EFI_D_ERROR, "Invalid Parity Parameter!\r\n"));\r | |
226 | }\r | |
227 | }\r | |
228 | \r | |
804405e7 | 229 | VOID\r |
230 | ConvertStopBit2Unix (\r | |
231 | struct termios *Options,\r | |
232 | EFI_STOP_BITS_TYPE StopBits\r | |
233 | )\r | |
234 | {\r | |
235 | switch (StopBits) {\r | |
236 | case TwoStopBits:\r | |
237 | Options->c_cflag |= CSTOPB;\r | |
238 | break;\r | |
239 | case OneStopBit:\r | |
240 | case OneFiveStopBits:\r | |
241 | case DefaultStopBits:\r | |
242 | Options->c_cflag &= ~CSTOPB;\r | |
243 | }\r | |
244 | }\r | |
245 | \r | |
246 | EFI_STATUS\r | |
247 | EFIAPI\r | |
248 | UnixSerialIoDriverBindingSupported (\r | |
249 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
250 | IN EFI_HANDLE Handle,\r | |
251 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
252 | )\r | |
253 | /*++\r | |
254 | \r | |
255 | Routine Description:\r | |
256 | The implementation of EFI_DRIVER_BINDING_PROTOCOL.EFI_DRIVER_BINDING_SUPPORTED.\r | |
257 | \r | |
258 | Arguments:\r | |
259 | \r | |
260 | Returns:\r | |
261 | \r | |
262 | None\r | |
263 | \r | |
264 | --*/\r | |
265 | {\r | |
526bf28c RN |
266 | EFI_STATUS Status;\r |
267 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
268 | EFI_UNIX_IO_PROTOCOL *UnixIo;\r | |
269 | UART_DEVICE_PATH *UartNode;\r | |
270 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
271 | UART_FLOW_CONTROL_DEVICE_PATH *FlowControlNode;\r | |
272 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r | |
273 | UINTN EntryCount;\r | |
274 | UINTN Index;\r | |
e23a349a | 275 | BOOLEAN RemainingDevicePathContainsFlowControl; \r |
804405e7 | 276 | \r |
af4a6385 | 277 | //\r |
278 | // Check RemainingDevicePath validation\r | |
279 | //\r | |
280 | if (RemainingDevicePath != NULL) {\r | |
281 | //\r | |
282 | // Check if RemainingDevicePath is the End of Device Path Node, \r | |
283 | // if yes, go on checking other conditions\r | |
284 | //\r | |
285 | if (!IsDevicePathEnd (RemainingDevicePath)) {\r | |
286 | //\r | |
287 | // If RemainingDevicePath isn't the End of Device Path Node,\r | |
288 | // check its validation\r | |
289 | //\r | |
290 | Status = EFI_UNSUPPORTED;\r | |
291 | UartNode = (UART_DEVICE_PATH *) RemainingDevicePath;\r | |
292 | if (UartNode->Header.Type != MESSAGING_DEVICE_PATH ||\r | |
293 | UartNode->Header.SubType != MSG_UART_DP ||\r | |
294 | DevicePathNodeLength((EFI_DEVICE_PATH_PROTOCOL *)UartNode) != sizeof(UART_DEVICE_PATH)) {\r | |
295 | goto Error;\r | |
296 | }\r | |
297 | if (UartNode->BaudRate < 0 || UartNode->BaudRate > SERIAL_PORT_MAX_BAUD_RATE) {\r | |
298 | goto Error;\r | |
299 | }\r | |
300 | if (UartNode->Parity < NoParity || UartNode->Parity > SpaceParity) {\r | |
301 | goto Error;\r | |
302 | }\r | |
303 | if (UartNode->DataBits < 5 || UartNode->DataBits > 8) {\r | |
304 | goto Error;\r | |
305 | }\r | |
306 | if (UartNode->StopBits < OneStopBit || UartNode->StopBits > TwoStopBits) {\r | |
307 | goto Error;\r | |
308 | }\r | |
309 | if ((UartNode->DataBits == 5) && (UartNode->StopBits == TwoStopBits)) {\r | |
310 | goto Error;\r | |
311 | }\r | |
312 | if ((UartNode->DataBits >= 6) && (UartNode->DataBits <= 8) && (UartNode->StopBits == OneFiveStopBits)) {\r | |
313 | goto Error;\r | |
314 | }\r | |
526bf28c RN |
315 | \r |
316 | FlowControlNode = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (UartNode);\r | |
317 | if (IsUartFlowControlNode (FlowControlNode)) {\r | |
318 | //\r | |
319 | // If the second node is Flow Control Node,\r | |
320 | // return error when it request other than hardware flow control.\r | |
321 | //\r | |
322 | if ((FlowControlNode->FlowControlMap & ~UART_FLOW_CONTROL_HARDWARE) != 0) {\r | |
323 | goto Error;\r | |
324 | }\r | |
325 | }\r | |
af4a6385 | 326 | }\r |
327 | }\r | |
328 | \r | |
804405e7 | 329 | //\r |
330 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
331 | //\r | |
332 | Status = gBS->OpenProtocol (\r | |
333 | Handle,\r | |
af4a6385 | 334 | &gEfiUnixIoProtocolGuid,\r |
335 | (VOID**)&UnixIo,\r | |
804405e7 | 336 | This->DriverBindingHandle,\r |
337 | Handle,\r | |
338 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
339 | );\r | |
340 | if (Status == EFI_ALREADY_STARTED) {\r | |
526bf28c RN |
341 | if (RemainingDevicePath == NULL || IsDevicePathEnd (RemainingDevicePath)) {\r |
342 | //\r | |
343 | // If RemainingDevicePath is NULL or is the End of Device Path Node\r | |
344 | //\r | |
345 | return EFI_SUCCESS;\r | |
346 | }\r | |
347 | //\r | |
348 | // When the driver has produced device path with flow control node but RemainingDevicePath only contains UART node,\r | |
349 | // return unsupported, and vice versa.\r | |
350 | //\r | |
351 | Status = gBS->OpenProtocolInformation (\r | |
352 | Handle,\r | |
353 | &gEfiUnixIoProtocolGuid,\r | |
354 | &OpenInfoBuffer,\r | |
355 | &EntryCount\r | |
356 | );\r | |
357 | if (EFI_ERROR (Status)) {\r | |
358 | return Status;\r | |
359 | }\r | |
360 | \r | |
e23a349a | 361 | //\r |
362 | // See if RemainingDevicePath has a Flow Control device path node\r | |
363 | //\r | |
364 | RemainingDevicePathContainsFlowControl = ContainsFlowControl (RemainingDevicePath);\r | |
365 | \r | |
526bf28c RN |
366 | for (Index = 0; Index < EntryCount; Index++) {\r |
367 | if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r | |
368 | Status = gBS->OpenProtocol (\r | |
369 | OpenInfoBuffer[Index].ControllerHandle,\r | |
370 | &gEfiDevicePathProtocolGuid,\r | |
371 | (VOID **) &DevicePath,\r | |
372 | This->DriverBindingHandle,\r | |
373 | Handle,\r | |
374 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
375 | );\r | |
e23a349a | 376 | if (!EFI_ERROR (Status)) {\r |
377 | if (RemainingDevicePathContainsFlowControl ^ ContainsFlowControl (DevicePath)) {\r | |
378 | Status = EFI_UNSUPPORTED;\r | |
379 | }\r | |
526bf28c RN |
380 | }\r |
381 | break;\r | |
382 | }\r | |
383 | }\r | |
384 | FreePool (OpenInfoBuffer);\r | |
385 | return Status;\r | |
804405e7 | 386 | }\r |
387 | \r | |
388 | if (EFI_ERROR (Status)) {\r | |
389 | return Status;\r | |
390 | }\r | |
391 | \r | |
af4a6385 | 392 | //\r |
393 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
394 | //\r | |
804405e7 | 395 | gBS->CloseProtocol (\r |
396 | Handle,\r | |
af4a6385 | 397 | &gEfiUnixIoProtocolGuid,\r |
804405e7 | 398 | This->DriverBindingHandle,\r |
399 | Handle\r | |
400 | );\r | |
401 | \r | |
af4a6385 | 402 | //\r |
403 | // Open the EFI Device Path protocol needed to perform the supported test\r | |
404 | //\r | |
804405e7 | 405 | Status = gBS->OpenProtocol (\r |
406 | Handle,\r | |
af4a6385 | 407 | &gEfiDevicePathProtocolGuid,\r |
408 | (VOID**)&ParentDevicePath,\r | |
804405e7 | 409 | This->DriverBindingHandle,\r |
410 | Handle,\r | |
411 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
412 | );\r | |
413 | if (Status == EFI_ALREADY_STARTED) {\r | |
414 | return EFI_SUCCESS;\r | |
415 | }\r | |
416 | \r | |
417 | if (EFI_ERROR (Status)) {\r | |
418 | return Status;\r | |
419 | }\r | |
420 | \r | |
af4a6385 | 421 | //\r |
422 | // Close protocol, don't use device path protocol in the Support() function\r | |
423 | //\r | |
424 | gBS->CloseProtocol (\r | |
425 | Handle,\r | |
426 | &gEfiDevicePathProtocolGuid,\r | |
427 | This->DriverBindingHandle,\r | |
428 | Handle\r | |
429 | );\r | |
430 | \r | |
804405e7 | 431 | //\r |
432 | // Make sure that the Unix Thunk Protocol is valid\r | |
433 | //\r | |
434 | if (UnixIo->UnixThunk->Signature != EFI_UNIX_THUNK_PROTOCOL_SIGNATURE) {\r | |
435 | Status = EFI_UNSUPPORTED;\r | |
436 | goto Error;\r | |
437 | }\r | |
438 | \r | |
439 | //\r | |
440 | // Check the GUID to see if this is a handle type the driver supports\r | |
441 | //\r | |
442 | if (!CompareGuid (UnixIo->TypeGuid, &gEfiUnixSerialPortGuid)) {\r | |
443 | Status = EFI_UNSUPPORTED;\r | |
444 | goto Error;\r | |
445 | }\r | |
446 | \r | |
af4a6385 | 447 | return EFI_SUCCESS;\r |
804405e7 | 448 | \r |
449 | Error:\r | |
804405e7 | 450 | return Status;\r |
451 | }\r | |
452 | \r | |
453 | EFI_STATUS\r | |
454 | EFIAPI\r | |
455 | UnixSerialIoDriverBindingStart (\r | |
456 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
457 | IN EFI_HANDLE Handle,\r | |
458 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
459 | )\r | |
460 | /*++\r | |
461 | \r | |
462 | Routine Description:\r | |
463 | \r | |
464 | Arguments:\r | |
465 | \r | |
466 | Returns:\r | |
467 | \r | |
468 | None\r | |
469 | \r | |
470 | --*/\r | |
471 | {\r | |
472 | EFI_STATUS Status;\r | |
473 | EFI_UNIX_IO_PROTOCOL *UnixIo;\r | |
474 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r | |
475 | UINTN UnixHandle;\r | |
526bf28c | 476 | UART_DEVICE_PATH UartNode;\r |
804405e7 | 477 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r |
478 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r | |
479 | UINTN EntryCount;\r | |
480 | UINTN Index;\r | |
481 | EFI_SERIAL_IO_PROTOCOL *SerialIo;\r | |
482 | CHAR8 AsciiDevName[1024];\r | |
526bf28c RN |
483 | UART_DEVICE_PATH *Uart;\r |
484 | UINT32 FlowControlMap;\r | |
485 | UART_FLOW_CONTROL_DEVICE_PATH *FlowControl;\r | |
486 | EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r | |
487 | UINT32 Control;\r | |
804405e7 | 488 | \r |
489 | DEBUG ((EFI_D_INFO, "SerialIo drive binding start!\r\n"));\r | |
490 | Private = NULL;\r | |
491 | UnixHandle = -1;\r | |
492 | \r | |
493 | //\r | |
526bf28c | 494 | // Get the Parent Device Path\r |
804405e7 | 495 | //\r |
496 | Status = gBS->OpenProtocol (\r | |
497 | Handle,\r | |
498 | &gEfiDevicePathProtocolGuid,\r | |
499 | (VOID**)&ParentDevicePath,\r | |
500 | This->DriverBindingHandle,\r | |
501 | Handle,\r | |
502 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
503 | );\r | |
504 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
505 | return Status;\r | |
506 | }\r | |
507 | \r | |
508 | //\r | |
509 | // Grab the IO abstraction we need to get any work done\r | |
510 | //\r | |
511 | Status = gBS->OpenProtocol (\r | |
512 | Handle,\r | |
513 | &gEfiUnixIoProtocolGuid,\r | |
514 | (VOID**)&UnixIo,\r | |
515 | This->DriverBindingHandle,\r | |
516 | Handle,\r | |
517 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
518 | );\r | |
519 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
520 | gBS->CloseProtocol (\r | |
521 | Handle,\r | |
522 | &gEfiDevicePathProtocolGuid,\r | |
523 | This->DriverBindingHandle,\r | |
524 | Handle\r | |
525 | );\r | |
526 | return Status;\r | |
527 | }\r | |
528 | \r | |
529 | if (Status == EFI_ALREADY_STARTED) {\r | |
530 | \r | |
af4a6385 | 531 | if (RemainingDevicePath == NULL || IsDevicePathEnd (RemainingDevicePath)) {\r |
532 | //\r | |
533 | // If RemainingDevicePath is NULL or is the End of Device Path Node\r | |
534 | //\r | |
804405e7 | 535 | return EFI_SUCCESS;\r |
536 | }\r | |
537 | \r | |
538 | //\r | |
539 | // Make sure a child handle does not already exist. This driver can only\r | |
540 | // produce one child per serial port.\r | |
541 | //\r | |
542 | Status = gBS->OpenProtocolInformation (\r | |
543 | Handle,\r | |
544 | &gEfiUnixIoProtocolGuid,\r | |
545 | &OpenInfoBuffer,\r | |
546 | &EntryCount\r | |
547 | );\r | |
548 | if (EFI_ERROR (Status)) {\r | |
549 | return Status;\r | |
550 | }\r | |
551 | \r | |
552 | Status = EFI_ALREADY_STARTED;\r | |
553 | for (Index = 0; Index < EntryCount; Index++) {\r | |
526bf28c | 554 | if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r |
804405e7 | 555 | Status = gBS->OpenProtocol (\r |
556 | OpenInfoBuffer[Index].ControllerHandle,\r | |
557 | &gEfiSerialIoProtocolGuid,\r | |
558 | (VOID**)&SerialIo,\r | |
559 | This->DriverBindingHandle,\r | |
560 | Handle,\r | |
561 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
562 | );\r | |
563 | if (!EFI_ERROR (Status)) {\r | |
526bf28c | 564 | Uart = (UART_DEVICE_PATH *) RemainingDevicePath;\r |
804405e7 | 565 | Status = SerialIo->SetAttributes (\r |
526bf28c RN |
566 | SerialIo,\r |
567 | Uart->BaudRate,\r | |
568 | SerialIo->Mode->ReceiveFifoDepth,\r | |
569 | SerialIo->Mode->Timeout,\r | |
570 | (EFI_PARITY_TYPE) Uart->Parity,\r | |
571 | Uart->DataBits,\r | |
572 | (EFI_STOP_BITS_TYPE) Uart->StopBits\r | |
573 | );\r | |
574 | \r | |
575 | FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (Uart);\r | |
576 | if (!EFI_ERROR (Status) && IsUartFlowControlNode (FlowControl)) {\r | |
577 | Status = SerialIo->GetControl (SerialIo, &Control);\r | |
578 | if (!EFI_ERROR (Status)) {\r | |
579 | if (FlowControl->FlowControlMap == UART_FLOW_CONTROL_HARDWARE) {\r | |
580 | Control |= EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;\r | |
581 | } else {\r | |
582 | Control &= ~EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;\r | |
583 | }\r | |
584 | //\r | |
585 | // Clear the bits that are not allowed to pass to SetControl\r | |
586 | //\r | |
587 | Control &= (EFI_SERIAL_REQUEST_TO_SEND | EFI_SERIAL_DATA_TERMINAL_READY |\r | |
588 | EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE | EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE | \r | |
589 | EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE);\r | |
590 | Status = SerialIo->SetControl (SerialIo, Control);\r | |
591 | }\r | |
592 | }\r | |
804405e7 | 593 | }\r |
594 | break;\r | |
595 | }\r | |
596 | }\r | |
597 | \r | |
598 | FreePool (OpenInfoBuffer);\r | |
9be29006 | 599 | return Status;\r |
af4a6385 | 600 | }\r |
601 | \r | |
526bf28c RN |
602 | FlowControl = NULL;\r |
603 | FlowControlMap = 0;\r | |
af4a6385 | 604 | if (RemainingDevicePath == NULL) {\r |
605 | //\r | |
606 | // Build the device path by appending the UART node to the ParentDevicePath\r | |
607 | // from the UnixIo handle. The Uart setings are zero here, since\r | |
608 | // SetAttribute() will update them to match the default setings.\r | |
609 | //\r | |
526bf28c RN |
610 | ZeroMem (&UartNode, sizeof (UART_DEVICE_PATH));\r |
611 | UartNode.Header.Type = MESSAGING_DEVICE_PATH;\r | |
612 | UartNode.Header.SubType = MSG_UART_DP;\r | |
613 | SetDevicePathNodeLength ((EFI_DEVICE_PATH_PROTOCOL *) &UartNode, sizeof (UART_DEVICE_PATH));\r | |
af4a6385 | 614 | \r |
615 | } else if (!IsDevicePathEnd (RemainingDevicePath)) {\r | |
616 | //\r | |
617 | // If RemainingDevicePath isn't the End of Device Path Node, \r | |
618 | // only scan the specified device by RemainingDevicePath\r | |
619 | //\r | |
620 | //\r | |
621 | // Match the configuration of the RemainingDevicePath. IsHandleSupported()\r | |
622 | // already checked to make sure the RemainingDevicePath contains settings\r | |
623 | // that we can support.\r | |
624 | //\r | |
526bf28c RN |
625 | CopyMem (&UartNode, RemainingDevicePath, sizeof (UART_DEVICE_PATH));\r |
626 | FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (RemainingDevicePath);\r | |
627 | if (IsUartFlowControlNode (FlowControl)) {\r | |
628 | FlowControlMap = FlowControl->FlowControlMap;\r | |
629 | } else {\r | |
630 | FlowControl = NULL;\r | |
631 | }\r | |
af4a6385 | 632 | \r |
633 | } else {\r | |
634 | //\r | |
635 | // If RemainingDevicePath is the End of Device Path Node,\r | |
636 | // skip enumerate any device and return EFI_SUCESSS\r | |
637 | // \r | |
638 | return EFI_SUCCESS;\r | |
804405e7 | 639 | }\r |
640 | \r | |
641 | //\r | |
642 | // Check to see if we can access the hardware device. If it's Open in Unix we\r | |
643 | // will not get access.\r | |
644 | //\r | |
645 | UnicodeStrToAsciiStr(UnixIo->EnvString, AsciiDevName);\r | |
646 | UnixHandle = UnixIo->UnixThunk->Open (AsciiDevName, O_RDWR | O_NOCTTY, 0);\r | |
647 | \r | |
648 | if (UnixHandle == -1) {\r | |
ccd55824 | 649 | DEBUG ((EFI_D_INFO, "Failed to open serial device, %s!\r\n", UnixIo->EnvString ));\r |
804405e7 | 650 | UnixIo->UnixThunk->Perror (AsciiDevName);\r |
651 | Status = EFI_DEVICE_ERROR;\r | |
652 | goto Error;\r | |
653 | }\r | |
654 | DEBUG ((EFI_D_INFO, "Success to open serial device %s, Hanle = 0x%x \r\n", UnixIo->EnvString, UnixHandle));\r | |
655 | \r | |
656 | //\r | |
657 | // Construct Private data\r | |
658 | //\r | |
659 | Private = AllocatePool (sizeof (UNIX_SERIAL_IO_PRIVATE_DATA));\r | |
660 | if (Private == NULL) {\r | |
661 | goto Error;\r | |
662 | }\r | |
663 | \r | |
664 | //\r | |
665 | // This signature must be valid before any member function is called\r | |
666 | //\r | |
667 | Private->Signature = UNIX_SERIAL_IO_PRIVATE_DATA_SIGNATURE;\r | |
668 | Private->UnixHandle = UnixHandle;\r | |
669 | Private->ControllerHandle = Handle;\r | |
670 | Private->Handle = NULL;\r | |
671 | Private->UnixThunk = UnixIo->UnixThunk;\r | |
672 | Private->ParentDevicePath = ParentDevicePath;\r | |
673 | Private->ControllerNameTable = NULL;\r | |
674 | \r | |
675 | Private->SoftwareLoopbackEnable = FALSE;\r | |
676 | Private->HardwareLoopbackEnable = FALSE;\r | |
526bf28c | 677 | Private->HardwareFlowControl = (BOOLEAN) (FlowControlMap == UART_FLOW_CONTROL_HARDWARE);\r |
804405e7 | 678 | Private->Fifo.First = 0;\r |
679 | Private->Fifo.Last = 0;\r | |
680 | Private->Fifo.Surplus = SERIAL_MAX_BUFFER_SIZE;\r | |
681 | \r | |
526bf28c | 682 | CopyMem (&Private->UartDevicePath, &UartNode, sizeof (UART_DEVICE_PATH));\r |
af4a6385 | 683 | \r |
804405e7 | 684 | AddUnicodeString (\r |
685 | "eng",\r | |
686 | gUnixSerialIoComponentName.SupportedLanguages,\r | |
687 | &Private->ControllerNameTable,\r | |
688 | UnixIo->EnvString\r | |
689 | );\r | |
690 | \r | |
691 | Private->SerialIo.Revision = SERIAL_IO_INTERFACE_REVISION;\r | |
692 | Private->SerialIo.Reset = UnixSerialIoReset;\r | |
693 | Private->SerialIo.SetAttributes = UnixSerialIoSetAttributes;\r | |
694 | Private->SerialIo.SetControl = UnixSerialIoSetControl;\r | |
695 | Private->SerialIo.GetControl = UnixSerialIoGetControl;\r | |
696 | Private->SerialIo.Write = UnixSerialIoWrite;\r | |
697 | Private->SerialIo.Read = UnixSerialIoRead;\r | |
698 | Private->SerialIo.Mode = &Private->SerialIoMode;\r | |
699 | \r | |
af4a6385 | 700 | \r |
804405e7 | 701 | \r |
702 | //\r | |
703 | // Build the device path by appending the UART node to the ParentDevicePath\r | |
704 | // from the UnixIo handle. The Uart setings are zero here, since\r | |
705 | // SetAttribute() will update them to match the current setings.\r | |
706 | //\r | |
707 | Private->DevicePath = AppendDevicePathNode (\r | |
708 | ParentDevicePath,\r | |
709 | (EFI_DEVICE_PATH_PROTOCOL *) &Private->UartDevicePath\r | |
710 | );\r | |
526bf28c RN |
711 | //\r |
712 | // Only produce the FlowControl node when remaining device path has it\r | |
713 | //\r | |
714 | if (FlowControl != NULL) {\r | |
715 | TempDevicePath = Private->DevicePath;\r | |
716 | if (TempDevicePath != NULL) {\r | |
717 | Private->DevicePath = AppendDevicePathNode (\r | |
718 | TempDevicePath,\r | |
719 | (EFI_DEVICE_PATH_PROTOCOL *) FlowControl\r | |
720 | );\r | |
721 | FreePool (TempDevicePath);\r | |
722 | }\r | |
723 | }\r | |
804405e7 | 724 | if (Private->DevicePath == NULL) {\r |
725 | Status = EFI_OUT_OF_RESOURCES;\r | |
726 | goto Error;\r | |
727 | }\r | |
728 | \r | |
729 | //\r | |
730 | // Fill in Serial I/O Mode structure based on either the RemainingDevicePath or defaults.\r | |
731 | //\r | |
732 | Private->SerialIoMode.ControlMask = SERIAL_CONTROL_MASK;\r | |
733 | Private->SerialIoMode.Timeout = SERIAL_TIMEOUT_DEFAULT;\r | |
734 | Private->SerialIoMode.BaudRate = Private->UartDevicePath.BaudRate;\r | |
735 | Private->SerialIoMode.ReceiveFifoDepth = SERIAL_FIFO_DEFAULT;\r | |
736 | Private->SerialIoMode.DataBits = Private->UartDevicePath.DataBits;\r | |
737 | Private->SerialIoMode.Parity = Private->UartDevicePath.Parity;\r | |
738 | Private->SerialIoMode.StopBits = Private->UartDevicePath.StopBits;\r | |
739 | \r | |
740 | //\r | |
741 | // Issue a reset to initialize the COM port\r | |
742 | //\r | |
743 | Status = Private->SerialIo.Reset (&Private->SerialIo);\r | |
744 | if (EFI_ERROR (Status)) {\r | |
745 | goto Error;\r | |
746 | }\r | |
747 | \r | |
748 | //\r | |
749 | // Create new child handle\r | |
750 | //\r | |
751 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
752 | &Private->Handle,\r | |
753 | &gEfiSerialIoProtocolGuid,\r | |
754 | &Private->SerialIo,\r | |
755 | &gEfiDevicePathProtocolGuid,\r | |
756 | Private->DevicePath,\r | |
757 | NULL\r | |
758 | );\r | |
759 | if (EFI_ERROR (Status)) {\r | |
760 | goto Error;\r | |
761 | }\r | |
762 | \r | |
763 | //\r | |
764 | // Open For Child Device\r | |
765 | //\r | |
766 | Status = gBS->OpenProtocol (\r | |
767 | Handle,\r | |
768 | &gEfiUnixIoProtocolGuid,\r | |
769 | (VOID**)&UnixIo,\r | |
770 | This->DriverBindingHandle,\r | |
771 | Private->Handle,\r | |
772 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
773 | );\r | |
774 | if (EFI_ERROR (Status)) {\r | |
775 | goto Error;\r | |
776 | }\r | |
777 | \r | |
778 | return EFI_SUCCESS;\r | |
779 | \r | |
780 | Error:\r | |
781 | //\r | |
782 | // Use the Stop() function to free all resources allocated in Start()\r | |
783 | //\r | |
784 | if (Private != NULL) {\r | |
785 | if (Private->Handle != NULL) {\r | |
786 | This->Stop (This, Handle, 1, &Private->Handle);\r | |
787 | } else {\r | |
788 | if (UnixHandle != -1) {\r | |
789 | Private->UnixThunk->Close (UnixHandle);\r | |
790 | }\r | |
791 | \r | |
792 | if (Private->DevicePath != NULL) {\r | |
793 | FreePool (Private->DevicePath);\r | |
794 | }\r | |
795 | \r | |
796 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
797 | \r | |
798 | FreePool (Private);\r | |
799 | }\r | |
800 | }\r | |
801 | \r | |
802 | This->Stop (This, Handle, 0, NULL);\r | |
803 | \r | |
804 | return Status;\r | |
805 | }\r | |
806 | \r | |
807 | EFI_STATUS\r | |
808 | EFIAPI\r | |
809 | UnixSerialIoDriverBindingStop (\r | |
810 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
811 | IN EFI_HANDLE Handle,\r | |
812 | IN UINTN NumberOfChildren,\r | |
813 | IN EFI_HANDLE *ChildHandleBuffer\r | |
814 | )\r | |
815 | /*++\r | |
816 | \r | |
817 | Routine Description:\r | |
818 | \r | |
819 | TODO: Add function description\r | |
820 | \r | |
821 | Arguments:\r | |
822 | \r | |
823 | This - TODO: add argument description\r | |
824 | Handle - TODO: add argument description\r | |
825 | NumberOfChildren - TODO: add argument description\r | |
826 | ChildHandleBuffer - TODO: add argument description\r | |
827 | \r | |
828 | Returns:\r | |
829 | \r | |
830 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
831 | EFI_SUCCESS - TODO: Add description for return value\r | |
832 | \r | |
833 | --*/\r | |
834 | {\r | |
835 | EFI_STATUS Status;\r | |
836 | UINTN Index;\r | |
837 | BOOLEAN AllChildrenStopped;\r | |
838 | EFI_SERIAL_IO_PROTOCOL *SerialIo;\r | |
839 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r | |
840 | EFI_UNIX_IO_PROTOCOL *UnixIo;\r | |
841 | \r | |
842 | //\r | |
843 | // Complete all outstanding transactions to Controller.\r | |
844 | // Don't allow any new transaction to Controller to be started.\r | |
845 | //\r | |
846 | \r | |
847 | if (NumberOfChildren == 0) {\r | |
848 | //\r | |
849 | // Close the bus driver\r | |
850 | //\r | |
851 | Status = gBS->CloseProtocol (\r | |
852 | Handle,\r | |
853 | &gEfiUnixIoProtocolGuid,\r | |
854 | This->DriverBindingHandle,\r | |
855 | Handle\r | |
856 | );\r | |
857 | Status = gBS->CloseProtocol (\r | |
858 | Handle,\r | |
859 | &gEfiDevicePathProtocolGuid,\r | |
860 | This->DriverBindingHandle,\r | |
861 | Handle\r | |
862 | );\r | |
863 | return Status;\r | |
864 | }\r | |
865 | \r | |
866 | AllChildrenStopped = TRUE;\r | |
867 | \r | |
868 | for (Index = 0; Index < NumberOfChildren; Index++) {\r | |
869 | Status = gBS->OpenProtocol (\r | |
870 | ChildHandleBuffer[Index],\r | |
871 | &gEfiSerialIoProtocolGuid,\r | |
872 | (VOID**)&SerialIo,\r | |
873 | This->DriverBindingHandle,\r | |
874 | Handle,\r | |
875 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
876 | );\r | |
877 | if (!EFI_ERROR (Status)) {\r | |
878 | Private = UNIX_SERIAL_IO_PRIVATE_DATA_FROM_THIS (SerialIo);\r | |
879 | \r | |
880 | ASSERT (Private->Handle == ChildHandleBuffer[Index]);\r | |
881 | \r | |
882 | Status = gBS->CloseProtocol (\r | |
883 | Handle,\r | |
884 | &gEfiUnixIoProtocolGuid,\r | |
885 | This->DriverBindingHandle,\r | |
886 | ChildHandleBuffer[Index]\r | |
887 | );\r | |
888 | \r | |
889 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
890 | ChildHandleBuffer[Index],\r | |
891 | &gEfiSerialIoProtocolGuid,\r | |
892 | &Private->SerialIo,\r | |
893 | &gEfiDevicePathProtocolGuid,\r | |
894 | Private->DevicePath,\r | |
895 | NULL\r | |
896 | );\r | |
897 | \r | |
898 | if (EFI_ERROR (Status)) {\r | |
899 | gBS->OpenProtocol (\r | |
900 | Handle,\r | |
901 | &gEfiUnixIoProtocolGuid,\r | |
902 | (VOID **) &UnixIo,\r | |
903 | This->DriverBindingHandle,\r | |
904 | ChildHandleBuffer[Index],\r | |
905 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
906 | );\r | |
907 | } else {\r | |
908 | Private->UnixThunk->Close (Private->UnixHandle);\r | |
909 | \r | |
910 | FreePool (Private->DevicePath);\r | |
911 | \r | |
912 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
913 | \r | |
914 | FreePool (Private);\r | |
915 | }\r | |
916 | }\r | |
917 | \r | |
918 | if (EFI_ERROR (Status)) {\r | |
919 | AllChildrenStopped = FALSE;\r | |
920 | }\r | |
921 | }\r | |
922 | \r | |
923 | if (!AllChildrenStopped) {\r | |
924 | return EFI_DEVICE_ERROR;\r | |
925 | }\r | |
926 | \r | |
927 | return EFI_SUCCESS;\r | |
928 | }\r | |
929 | \r | |
930 | //\r | |
931 | // Serial IO Protocol member functions\r | |
932 | //\r | |
933 | \r | |
934 | EFI_STATUS\r | |
935 | EFIAPI\r | |
936 | UnixSerialIoReset (\r | |
937 | IN EFI_SERIAL_IO_PROTOCOL *This\r | |
938 | )\r | |
939 | /*++\r | |
940 | \r | |
941 | Routine Description:\r | |
942 | \r | |
943 | TODO: Add function description\r | |
944 | \r | |
945 | Arguments:\r | |
946 | \r | |
947 | This - TODO: add argument description\r | |
948 | \r | |
949 | Returns:\r | |
950 | \r | |
951 | TODO: add return values\r | |
952 | \r | |
953 | --*/\r | |
954 | {\r | |
955 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r | |
956 | EFI_TPL Tpl;\r | |
957 | UINTN UnixStatus;\r | |
958 | \r | |
959 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
960 | \r | |
961 | Private = UNIX_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
962 | \r | |
963 | UnixStatus = Private->UnixThunk->Tcflush (\r | |
964 | Private->UnixHandle, \r | |
965 | TCIOFLUSH\r | |
966 | );\r | |
967 | switch (UnixStatus) {\r | |
968 | case EBADF:\r | |
969 | DEBUG ((EFI_D_ERROR, "Invalid handle of serial device!\r\n"));\r | |
970 | return EFI_DEVICE_ERROR;\r | |
971 | case EINVAL:\r | |
972 | DEBUG ((EFI_D_ERROR, "Invalid queue selector!\r\n"));\r | |
973 | return EFI_DEVICE_ERROR;\r | |
974 | case ENOTTY:\r | |
975 | DEBUG ((EFI_D_ERROR, "The file associated with serial's handle is not a terminal!\r\n"));\r | |
976 | return EFI_DEVICE_ERROR;\r | |
977 | default:\r | |
978 | DEBUG ((EFI_D_ERROR, "The serial IO device is reset successfully!\r\n"));\r | |
979 | }\r | |
980 | \r | |
981 | gBS->RestoreTPL (Tpl);\r | |
982 | \r | |
983 | return This->SetAttributes (\r | |
984 | This,\r | |
985 | This->Mode->BaudRate,\r | |
986 | This->Mode->ReceiveFifoDepth,\r | |
987 | This->Mode->Timeout,\r | |
988 | This->Mode->Parity,\r | |
989 | (UINT8) This->Mode->DataBits,\r | |
990 | This->Mode->StopBits\r | |
991 | );\r | |
992 | }\r | |
993 | \r | |
994 | EFI_STATUS\r | |
995 | EFIAPI\r | |
996 | UnixSerialIoSetAttributes (\r | |
997 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
998 | IN UINT64 BaudRate,\r | |
999 | IN UINT32 ReceiveFifoDepth,\r | |
1000 | IN UINT32 Timeout,\r | |
1001 | IN EFI_PARITY_TYPE Parity,\r | |
1002 | IN UINT8 DataBits,\r | |
1003 | IN EFI_STOP_BITS_TYPE StopBits\r | |
1004 | )\r | |
1005 | /*++\r | |
1006 | \r | |
1007 | Routine Description:\r | |
1008 | \r | |
1009 | This function is used to set the attributes.\r | |
1010 | \r | |
1011 | Arguments:\r | |
1012 | \r | |
1013 | This - A pointer to the EFI_SERIAL_IO_PROTOCOL structrue.\r | |
1014 | BaudRate - The Baud rate of the serial device.\r | |
1015 | ReceiveFifoDepth - The request depth of fifo on receive side.\r | |
1016 | Timeout - the request timeout for a single charact.\r | |
1017 | Parity - The type of parity used in serial device.\r | |
1018 | DataBits - Number of deata bits used in serial device.\r | |
1019 | StopBits - Number of stop bits used in serial device.\r | |
1020 | \r | |
1021 | Returns:\r | |
1022 | Status code\r | |
1023 | \r | |
1024 | None\r | |
1025 | \r | |
1026 | --*/\r | |
1027 | {\r | |
1028 | EFI_STATUS Status;\r | |
1029 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r | |
526bf28c | 1030 | UART_DEVICE_PATH *Uart;\r |
804405e7 | 1031 | EFI_TPL Tpl;\r |
804405e7 | 1032 | \r |
1033 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1034 | Private = UNIX_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1035 | \r | |
1036 | //\r | |
1037 | // Some of our arguments have defaults if a null value is passed in, and\r | |
1038 | // we must set the default values if a null argument is passed in.\r | |
1039 | //\r | |
1040 | if (BaudRate == 0) {\r | |
1041 | BaudRate = SERIAL_BAUD_DEFAULT;\r | |
1042 | }\r | |
1043 | \r | |
1044 | if (ReceiveFifoDepth == 0) {\r | |
1045 | ReceiveFifoDepth = SERIAL_FIFO_DEFAULT;\r | |
1046 | }\r | |
1047 | \r | |
1048 | if (Timeout == 0) {\r | |
1049 | Timeout = SERIAL_TIMEOUT_DEFAULT;\r | |
1050 | }\r | |
1051 | \r | |
1052 | if (Parity == DefaultParity) {\r | |
1053 | Parity = NoParity;\r | |
1054 | }\r | |
1055 | \r | |
1056 | if (DataBits == 0) {\r | |
1057 | DataBits = SERIAL_DATABITS_DEFAULT;\r | |
1058 | }\r | |
1059 | \r | |
1060 | if (StopBits == DefaultStopBits) {\r | |
1061 | StopBits = OneStopBit;\r | |
1062 | }\r | |
1063 | \r | |
1064 | //\r | |
1065 | // See if the new attributes already match the current attributes\r | |
1066 | //\r | |
1067 | if (Private->UartDevicePath.BaudRate == BaudRate &&\r | |
1068 | Private->UartDevicePath.DataBits == DataBits &&\r | |
1069 | Private->UartDevicePath.Parity == Parity &&\r | |
1070 | Private->UartDevicePath.StopBits == StopBits &&\r | |
1071 | Private->SerialIoMode.ReceiveFifoDepth == ReceiveFifoDepth &&\r | |
1072 | Private->SerialIoMode.Timeout == Timeout ) {\r | |
1073 | gBS->RestoreTPL(Tpl);\r | |
1074 | return EFI_SUCCESS;\r | |
1075 | }\r | |
1076 | \r | |
1077 | //\r | |
1078 | // Try to get options from serial device.\r | |
1079 | // \r | |
1080 | if (Private->UnixThunk->Tcgetattr (Private->UnixHandle, &Private->UnixTermios) == -1) {\r | |
1081 | Private->UnixThunk->Perror ("IoSetAttributes");\r | |
1082 | gBS->RestoreTPL (Tpl);\r | |
1083 | return EFI_DEVICE_ERROR;\r | |
1084 | }\r | |
1085 | \r | |
1086 | //\r | |
1087 | // Setting Baud Rate\r | |
1088 | // \r | |
1089 | Private->UnixThunk->Cfsetispeed (&Private->UnixTermios, ConvertBaud2Unix(BaudRate));\r | |
1090 | Private->UnixThunk->Cfsetospeed (&Private->UnixTermios, ConvertBaud2Unix(BaudRate));\r | |
1091 | //\r | |
1092 | // Setting DataBits \r | |
1093 | // \r | |
1094 | Private->UnixTermios.c_cflag &= ~CSIZE;\r | |
1095 | Private->UnixTermios.c_cflag |= ConvertByteSize2Unix (DataBits);\r | |
1096 | //\r | |
1097 | // Setting Parity\r | |
1098 | // \r | |
1099 | ConvertParity2Unix (&Private->UnixTermios, Parity);\r | |
1100 | //\r | |
1101 | // Setting StopBits\r | |
1102 | // \r | |
1103 | ConvertStopBit2Unix (&Private->UnixTermios, StopBits);\r | |
1104 | //\r | |
1105 | // Raw input\r | |
1106 | // \r | |
1107 | Private->UnixTermios.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);\r | |
1108 | //\r | |
1109 | // Raw output\r | |
1110 | // \r | |
1111 | Private->UnixTermios.c_oflag &= ~OPOST;\r | |
1112 | //\r | |
1113 | // Support hardware flow control \r | |
1114 | // \r | |
1115 | Private->UnixTermios.c_cflag &= ~CRTSCTS;;\r | |
1116 | //\r | |
1117 | // Time out\r | |
1118 | // \r | |
1119 | Private->UnixTermios.c_cc[VMIN] = 0;\r | |
1120 | Private->UnixTermios.c_cc[VTIME] = (Timeout/1000000) * 10;\r | |
1121 | \r | |
1122 | //\r | |
1123 | // Set the options\r | |
1124 | // \r | |
1125 | if (-1 == Private->UnixThunk->Tcsetattr (\r | |
1126 | Private->UnixHandle, \r | |
1127 | TCSANOW, \r | |
1128 | &Private->UnixTermios\r | |
1129 | )) {\r | |
1130 | DEBUG ((EFI_D_INFO, "Fail to set options for serial device!\r\n"));\r | |
526bf28c | 1131 | gBS->RestoreTPL (Tpl);\r |
804405e7 | 1132 | return EFI_DEVICE_ERROR;\r |
1133 | }\r | |
526bf28c | 1134 | \r |
804405e7 | 1135 | //\r |
1136 | // Update mode\r | |
1137 | //\r | |
1138 | Private->SerialIoMode.BaudRate = BaudRate;\r | |
1139 | Private->SerialIoMode.ReceiveFifoDepth = ReceiveFifoDepth;\r | |
1140 | Private->SerialIoMode.Timeout = Timeout;\r | |
1141 | Private->SerialIoMode.Parity = Parity;\r | |
1142 | Private->SerialIoMode.DataBits = DataBits;\r | |
1143 | Private->SerialIoMode.StopBits = StopBits;\r | |
526bf28c | 1144 | \r |
804405e7 | 1145 | //\r |
1146 | // See if Device Path Node has actually changed\r | |
1147 | //\r | |
1148 | if (Private->UartDevicePath.BaudRate == BaudRate &&\r | |
1149 | Private->UartDevicePath.DataBits == DataBits &&\r | |
1150 | Private->UartDevicePath.Parity == Parity &&\r | |
1151 | Private->UartDevicePath.StopBits == StopBits ) {\r | |
1152 | gBS->RestoreTPL(Tpl);\r | |
1153 | return EFI_SUCCESS;\r | |
1154 | }\r | |
1155 | \r | |
1156 | //\r | |
1157 | // Update the device path\r | |
1158 | //\r | |
1159 | Private->UartDevicePath.BaudRate = BaudRate;\r | |
1160 | Private->UartDevicePath.DataBits = DataBits;\r | |
1161 | Private->UartDevicePath.Parity = (UINT8) Parity;\r | |
1162 | Private->UartDevicePath.StopBits = (UINT8) StopBits;\r | |
1163 | \r | |
526bf28c | 1164 | Status = EFI_SUCCESS;\r |
804405e7 | 1165 | if (Private->Handle != NULL) {\r |
526bf28c RN |
1166 | Uart = (UART_DEVICE_PATH *) (\r |
1167 | (UINTN) Private->DevicePath\r | |
1168 | + GetDevicePathSize (Private->ParentDevicePath)\r | |
1169 | - END_DEVICE_PATH_LENGTH\r | |
1170 | );\r | |
1171 | CopyMem (Uart, &Private->UartDevicePath, sizeof (UART_DEVICE_PATH));\r | |
804405e7 | 1172 | Status = gBS->ReinstallProtocolInterface (\r |
1173 | Private->Handle,\r | |
1174 | &gEfiDevicePathProtocolGuid,\r | |
1175 | Private->DevicePath,\r | |
526bf28c | 1176 | Private->DevicePath\r |
804405e7 | 1177 | );\r |
804405e7 | 1178 | }\r |
1179 | \r | |
804405e7 | 1180 | gBS->RestoreTPL (Tpl);\r |
1181 | \r | |
526bf28c | 1182 | return Status;\r |
804405e7 | 1183 | }\r |
1184 | \r | |
1185 | EFI_STATUS\r | |
1186 | EFIAPI\r | |
1187 | UnixSerialIoSetControl (\r | |
1188 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
1189 | IN UINT32 Control\r | |
1190 | )\r | |
1191 | /*++\r | |
1192 | \r | |
1193 | Routine Description:\r | |
1194 | \r | |
1195 | TODO: Add function description\r | |
1196 | \r | |
1197 | Arguments:\r | |
1198 | \r | |
1199 | This - TODO: add argument description\r | |
1200 | Control - TODO: add argument description\r | |
1201 | \r | |
1202 | Returns:\r | |
1203 | \r | |
1204 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1205 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1206 | EFI_SUCCESS - TODO: Add description for return value\r | |
1207 | \r | |
1208 | --*/\r | |
1209 | {\r | |
526bf28c RN |
1210 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r |
1211 | UINTN Result;\r | |
1212 | UINTN IoStatus;\r | |
1213 | struct termios Options;\r | |
1214 | EFI_TPL Tpl;\r | |
1215 | UART_FLOW_CONTROL_DEVICE_PATH *FlowControl;\r | |
1216 | EFI_STATUS Status;\r | |
1217 | \r | |
1218 | //\r | |
1219 | // first determine the parameter is invalid\r | |
1220 | //\r | |
1221 | if (Control & (~(EFI_SERIAL_REQUEST_TO_SEND | EFI_SERIAL_DATA_TERMINAL_READY |\r | |
1222 | EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE | EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE | \r | |
1223 | EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE))) {\r | |
1224 | return EFI_UNSUPPORTED;\r | |
1225 | }\r | |
804405e7 | 1226 | \r |
1227 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1228 | \r | |
1229 | Private = UNIX_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1230 | \r | |
526bf28c | 1231 | Result = Private->UnixThunk->IoCtl (Private->UnixHandle, TIOCMGET, &IoStatus);\r |
804405e7 | 1232 | \r |
1233 | if (Result == -1) {\r | |
1234 | Private->UnixThunk->Perror ("SerialSetControl");\r | |
1235 | gBS->RestoreTPL (Tpl);\r | |
1236 | return EFI_DEVICE_ERROR;\r | |
1237 | }\r | |
1238 | \r | |
1239 | Private->HardwareFlowControl = FALSE;\r | |
1240 | Private->SoftwareLoopbackEnable = FALSE;\r | |
1241 | Private->HardwareLoopbackEnable = FALSE;\r | |
1242 | \r | |
1243 | if (Control & EFI_SERIAL_REQUEST_TO_SEND) {\r | |
1244 | Options.c_cflag |= TIOCM_RTS;\r | |
1245 | }\r | |
1246 | \r | |
1247 | if (Control & EFI_SERIAL_DATA_TERMINAL_READY) {\r | |
1248 | Options.c_cflag |= TIOCM_DTR;\r | |
1249 | }\r | |
1250 | \r | |
1251 | if (Control & EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE) {\r | |
1252 | Private->HardwareFlowControl = TRUE;\r | |
1253 | }\r | |
1254 | \r | |
1255 | if (Control & EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE) {\r | |
1256 | Private->SoftwareLoopbackEnable = TRUE;\r | |
1257 | }\r | |
1258 | \r | |
1259 | if (Control & EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE) {\r | |
1260 | Private->HardwareLoopbackEnable = TRUE;\r | |
1261 | }\r | |
1262 | \r | |
526bf28c | 1263 | Result = Private->UnixThunk->IoCtl (Private->UnixHandle, TIOCMSET, &IoStatus);\r |
804405e7 | 1264 | \r |
1265 | if (Result == -1) {\r | |
1266 | Private->UnixThunk->Perror ("SerialSetControl");\r | |
1267 | gBS->RestoreTPL (Tpl);\r | |
1268 | return EFI_DEVICE_ERROR;\r | |
1269 | }\r | |
1270 | \r | |
526bf28c RN |
1271 | Status = EFI_SUCCESS;\r |
1272 | if (Private->Handle != NULL) {\r | |
1273 | FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) (\r | |
1274 | (UINTN) Private->DevicePath\r | |
1275 | + GetDevicePathSize (Private->ParentDevicePath)\r | |
1276 | - END_DEVICE_PATH_LENGTH\r | |
1277 | + sizeof (UART_DEVICE_PATH)\r | |
1278 | );\r | |
1279 | if (IsUartFlowControlNode (FlowControl) &&\r | |
1280 | ((FlowControl->FlowControlMap == UART_FLOW_CONTROL_HARDWARE) ^ Private->HardwareFlowControl)) {\r | |
1281 | //\r | |
1282 | // Flow Control setting is changed, need to reinstall device path protocol\r | |
1283 | //\r | |
1284 | FlowControl->FlowControlMap = Private->HardwareFlowControl ? UART_FLOW_CONTROL_HARDWARE : 0;\r | |
1285 | Status = gBS->ReinstallProtocolInterface (\r | |
1286 | Private->Handle,\r | |
1287 | &gEfiDevicePathProtocolGuid,\r | |
1288 | Private->DevicePath,\r | |
1289 | Private->DevicePath\r | |
1290 | );\r | |
1291 | }\r | |
1292 | }\r | |
1293 | \r | |
804405e7 | 1294 | gBS->RestoreTPL (Tpl);\r |
1295 | \r | |
526bf28c | 1296 | return Status;\r |
804405e7 | 1297 | }\r |
1298 | \r | |
1299 | EFI_STATUS\r | |
1300 | EFIAPI\r | |
1301 | UnixSerialIoGetControl (\r | |
1302 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
1303 | OUT UINT32 *Control\r | |
1304 | )\r | |
1305 | /*++\r | |
1306 | \r | |
1307 | Routine Description:\r | |
1308 | \r | |
1309 | TODO: Add function description\r | |
1310 | \r | |
1311 | Arguments:\r | |
1312 | \r | |
1313 | This - TODO: add argument description\r | |
1314 | Control - TODO: add argument description\r | |
1315 | \r | |
1316 | Returns:\r | |
1317 | \r | |
1318 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1319 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1320 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1321 | EFI_SUCCESS - TODO: Add description for return value\r | |
1322 | \r | |
1323 | --*/\r | |
1324 | {\r | |
1325 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r | |
1326 | UINTN Result;\r | |
1327 | UINTN Status;\r | |
1328 | UINT32 Bits;\r | |
1329 | EFI_TPL Tpl;\r | |
1330 | UINTN Bytes;\r | |
1331 | \r | |
1332 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1333 | \r | |
1334 | Private = UNIX_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1335 | Result = Private->UnixThunk->IoCtl (Private->UnixHandle, TIOCMGET, &Status);\r | |
1336 | if (Result == -1) {\r | |
1337 | Private->UnixThunk->Perror ("SerialGetControl");\r | |
1338 | gBS->RestoreTPL (Tpl);\r | |
1339 | return EFI_DEVICE_ERROR;\r | |
1340 | }\r | |
1341 | \r | |
ccd55824 | 1342 | Bits = 0;\r |
804405e7 | 1343 | if ((Status & TIOCM_CTS) == TIOCM_CTS) {\r |
1344 | Bits |= EFI_SERIAL_CLEAR_TO_SEND;\r | |
1345 | }\r | |
1346 | \r | |
1347 | if ((Status & TIOCM_DSR) == TIOCM_DSR) {\r | |
1348 | Bits |= EFI_SERIAL_DATA_SET_READY;\r | |
1349 | }\r | |
1350 | \r | |
1351 | if ((Status & TIOCM_DTR) == TIOCM_DTR) {\r | |
1352 | Bits |= EFI_SERIAL_DATA_TERMINAL_READY;\r | |
1353 | }\r | |
1354 | \r | |
1355 | if ((Status & TIOCM_RTS) == TIOCM_RTS) {\r | |
1356 | Bits |= EFI_SERIAL_REQUEST_TO_SEND;\r | |
1357 | }\r | |
1358 | \r | |
1359 | if ((Status & TIOCM_RNG) == TIOCM_RNG) {\r | |
1360 | Bits |= EFI_SERIAL_RING_INDICATE;\r | |
1361 | }\r | |
1362 | \r | |
1363 | if ((Status & TIOCM_CAR) == TIOCM_CAR) {\r | |
1364 | Bits |= EFI_SERIAL_CARRIER_DETECT;\r | |
1365 | }\r | |
1366 | \r | |
1367 | if (Private->HardwareFlowControl) {\r | |
1368 | Bits |= EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;\r | |
1369 | }\r | |
1370 | \r | |
1371 | if (Private->SoftwareLoopbackEnable) {\r | |
1372 | Bits |= EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE;\r | |
1373 | }\r | |
1374 | \r | |
1375 | if (Private->HardwareLoopbackEnable) {\r | |
1376 | Bits |= EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE;\r | |
1377 | }\r | |
1378 | \r | |
1379 | Result = Private->UnixThunk->IoCtl (Private->UnixHandle, FIONREAD, &Bytes);\r | |
1380 | if (Result == -1) {\r | |
1381 | Private->UnixThunk->Perror ("SerialGetControl");\r | |
1382 | gBS->RestoreTPL (Tpl);\r | |
1383 | return EFI_DEVICE_ERROR;\r | |
1384 | }\r | |
1385 | \r | |
1386 | if (Bytes == 0) {\r | |
1387 | Bits |= EFI_SERIAL_INPUT_BUFFER_EMPTY;\r | |
1388 | }\r | |
1389 | \r | |
1390 | *Control = Bits;\r | |
1391 | \r | |
1392 | gBS->RestoreTPL (Tpl);\r | |
1393 | \r | |
1394 | return EFI_SUCCESS;\r | |
1395 | }\r | |
1396 | \r | |
1397 | EFI_STATUS\r | |
1398 | EFIAPI\r | |
1399 | UnixSerialIoWrite (\r | |
1400 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
1401 | IN OUT UINTN *BufferSize,\r | |
1402 | IN VOID *Buffer\r | |
1403 | )\r | |
1404 | /*++\r | |
1405 | \r | |
1406 | Routine Description:\r | |
1407 | \r | |
1408 | TODO: Add function description\r | |
1409 | \r | |
1410 | Arguments:\r | |
1411 | \r | |
1412 | This - TODO: add argument description\r | |
1413 | BufferSize - TODO: add argument description\r | |
1414 | Buffer - TODO: add argument description\r | |
1415 | \r | |
1416 | Returns:\r | |
1417 | \r | |
1418 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1419 | EFI_SUCCESS - TODO: Add description for return value\r | |
1420 | \r | |
1421 | --*/\r | |
1422 | {\r | |
1423 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r | |
ccd55824 | 1424 | EFI_STATUS Status;\r |
804405e7 | 1425 | UINT8 *ByteBuffer;\r |
1426 | UINT32 TotalBytesWritten;\r | |
1427 | UINT32 BytesToGo;\r | |
1428 | UINT32 BytesWritten;\r | |
1429 | UINT32 Index;\r | |
1430 | UINT32 Control;\r | |
1431 | EFI_TPL Tpl;\r | |
1432 | \r | |
1433 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1434 | \r | |
1435 | Private = UNIX_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This); \r | |
1436 | \r | |
1437 | ByteBuffer = (UINT8 *) Buffer;\r | |
ccd55824 | 1438 | Status = EFI_SUCCESS;\r |
804405e7 | 1439 | TotalBytesWritten = 0;\r |
1440 | \r | |
1441 | if (Private->SoftwareLoopbackEnable || Private->HardwareLoopbackEnable) {\r | |
1442 | for (Index = 0; Index < *BufferSize; Index++) {\r | |
1443 | if (IsaSerialFifoAdd (&Private->Fifo, ByteBuffer[Index]) == EFI_SUCCESS) {\r | |
1444 | TotalBytesWritten++;\r | |
1445 | } else {\r | |
1446 | break;\r | |
1447 | }\r | |
1448 | }\r | |
1449 | } else {\r | |
1450 | BytesToGo = (*BufferSize);\r | |
1451 | \r | |
1452 | do {\r | |
1453 | if (Private->HardwareFlowControl) {\r | |
1454 | //\r | |
1455 | // Send RTS\r | |
1456 | //\r | |
1457 | UnixSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1458 | Control |= EFI_SERIAL_REQUEST_TO_SEND;\r | |
1459 | UnixSerialIoSetControl (&Private->SerialIo, Control);\r | |
1460 | }\r | |
1461 | \r | |
1462 | //\r | |
1463 | // Do the write\r | |
1464 | //\r | |
1465 | BytesWritten = Private->UnixThunk->Write ( \r | |
1466 | Private->UnixHandle,\r | |
1467 | &ByteBuffer[TotalBytesWritten],\r | |
1468 | BytesToGo\r | |
1469 | );\r | |
ccd55824 | 1470 | if (BytesWritten == -1) {\r |
1471 | Status = EFI_DEVICE_ERROR;\r | |
1472 | break;\r | |
1473 | }\r | |
804405e7 | 1474 | \r |
1475 | if (Private->HardwareFlowControl) {\r | |
1476 | //\r | |
1477 | // Assert RTS\r | |
1478 | //\r | |
1479 | UnixSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1480 | Control &= ~ (UINT32) EFI_SERIAL_REQUEST_TO_SEND;\r | |
1481 | UnixSerialIoSetControl (&Private->SerialIo, Control);\r | |
1482 | }\r | |
1483 | \r | |
1484 | TotalBytesWritten += BytesWritten;\r | |
1485 | BytesToGo -= BytesWritten;\r | |
1486 | } while (BytesToGo > 0);\r | |
1487 | }\r | |
1488 | \r | |
1489 | *BufferSize = TotalBytesWritten;\r | |
1490 | \r | |
1491 | gBS->RestoreTPL (Tpl);\r | |
1492 | \r | |
ccd55824 | 1493 | return Status;\r |
804405e7 | 1494 | }\r |
1495 | \r | |
1496 | EFI_STATUS\r | |
1497 | EFIAPI\r | |
1498 | UnixSerialIoRead (\r | |
1499 | IN EFI_SERIAL_IO_PROTOCOL *This,\r | |
1500 | IN OUT UINTN *BufferSize,\r | |
1501 | OUT VOID *Buffer\r | |
1502 | )\r | |
1503 | /*++\r | |
1504 | \r | |
1505 | Routine Description:\r | |
1506 | \r | |
1507 | TODO: Add function description\r | |
1508 | \r | |
1509 | Arguments:\r | |
1510 | \r | |
1511 | This - TODO: add argument description\r | |
1512 | BufferSize - TODO: add argument description\r | |
1513 | Buffer - TODO: add argument description\r | |
1514 | \r | |
1515 | Returns:\r | |
1516 | \r | |
1517 | EFI_DEVICE_ERROR - TODO: Add description for return value\r | |
1518 | \r | |
1519 | --*/\r | |
1520 | {\r | |
1521 | UNIX_SERIAL_IO_PRIVATE_DATA *Private;\r | |
1522 | UINT32 BytesRead;\r | |
1523 | EFI_STATUS Status;\r | |
1524 | UINT32 Index;\r | |
1525 | UINT8 Data;\r | |
1526 | UINT32 Control;\r | |
1527 | EFI_TPL Tpl;\r | |
1528 | \r | |
1529 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1530 | \r | |
1531 | Private = UNIX_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1532 | \r | |
1533 | //\r | |
1534 | // Do the read\r | |
1535 | //\r | |
1536 | if (Private->SoftwareLoopbackEnable || Private->HardwareLoopbackEnable) {\r | |
1537 | for (Index = 0, BytesRead = 0; Index < *BufferSize; Index++) {\r | |
1538 | if (IsaSerialFifoRemove (&Private->Fifo, &Data) == EFI_SUCCESS) {\r | |
1539 | ((UINT8 *) Buffer)[Index] = Data;\r | |
1540 | BytesRead++;\r | |
1541 | } else {\r | |
1542 | break;\r | |
1543 | }\r | |
1544 | }\r | |
1545 | } else {\r | |
1546 | if (Private->HardwareFlowControl) {\r | |
1547 | UnixSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1548 | Control |= EFI_SERIAL_DATA_TERMINAL_READY;\r | |
1549 | UnixSerialIoSetControl (&Private->SerialIo, Control);\r | |
1550 | }\r | |
1551 | \r | |
1552 | BytesRead = Private->UnixThunk->Read (Private->UnixHandle, Buffer, *BufferSize);\r | |
1553 | if (Private->HardwareFlowControl) {\r | |
1554 | UnixSerialIoGetControl (&Private->SerialIo, &Control);\r | |
1555 | Control &= ~ (UINT32) EFI_SERIAL_DATA_TERMINAL_READY;\r | |
1556 | UnixSerialIoSetControl (&Private->SerialIo, Control);\r | |
1557 | }\r | |
1558 | \r | |
1559 | }\r | |
1560 | \r | |
1561 | if (BytesRead != *BufferSize) {\r | |
1562 | Status = EFI_TIMEOUT;\r | |
1563 | } else {\r | |
1564 | Status = EFI_SUCCESS;\r | |
1565 | }\r | |
1566 | \r | |
1567 | *BufferSize = (UINTN) BytesRead;\r | |
1568 | \r | |
1569 | gBS->RestoreTPL (Tpl);\r | |
1570 | \r | |
1571 | return Status;\r | |
1572 | }\r | |
1573 | \r | |
1574 | BOOLEAN\r | |
1575 | IsaSerialFifoFull (\r | |
1576 | IN SERIAL_DEV_FIFO *Fifo\r | |
1577 | )\r | |
1578 | /*++\r | |
1579 | \r | |
1580 | Routine Description:\r | |
1581 | Detect whether specific FIFO is full or not\r | |
1582 | \r | |
1583 | Arguments:\r | |
1584 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1585 | \r | |
1586 | Returns:\r | |
1587 | TRUE: the FIFO is full\r | |
1588 | FALSE: the FIFO is not full\r | |
1589 | \r | |
1590 | --*/\r | |
1591 | {\r | |
1592 | if (Fifo->Surplus == 0) {\r | |
1593 | return TRUE;\r | |
1594 | }\r | |
1595 | \r | |
1596 | return FALSE;\r | |
1597 | }\r | |
1598 | \r | |
1599 | BOOLEAN\r | |
1600 | IsaSerialFifoEmpty (\r | |
1601 | IN SERIAL_DEV_FIFO *Fifo\r | |
1602 | )\r | |
1603 | /*++\r | |
1604 | \r | |
1605 | Routine Description:\r | |
1606 | Detect whether specific FIFO is empty or not\r | |
1607 | \r | |
1608 | Arguments:\r | |
1609 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1610 | \r | |
1611 | Returns:\r | |
1612 | TRUE: the FIFO is empty\r | |
1613 | FALSE: the FIFO is not empty\r | |
1614 | \r | |
1615 | --*/\r | |
1616 | {\r | |
1617 | if (Fifo->Surplus == SERIAL_MAX_BUFFER_SIZE) {\r | |
1618 | return TRUE;\r | |
1619 | }\r | |
1620 | \r | |
1621 | return FALSE;\r | |
1622 | }\r | |
1623 | \r | |
1624 | EFI_STATUS\r | |
1625 | IsaSerialFifoAdd (\r | |
1626 | IN SERIAL_DEV_FIFO *Fifo,\r | |
1627 | IN UINT8 Data\r | |
1628 | )\r | |
1629 | /*++\r | |
1630 | \r | |
1631 | Routine Description:\r | |
1632 | Add data to specific FIFO\r | |
1633 | \r | |
1634 | Arguments:\r | |
1635 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1636 | Data UINT8: the data added to FIFO\r | |
1637 | \r | |
1638 | Returns:\r | |
1639 | EFI_SUCCESS: Add data to specific FIFO successfully\r | |
1640 | EFI_OUT_RESOURCE: Failed to add data because FIFO is already full\r | |
1641 | \r | |
1642 | --*/\r | |
1643 | // TODO: EFI_OUT_OF_RESOURCES - add return value to function comment\r | |
1644 | {\r | |
1645 | //\r | |
1646 | // if FIFO full can not add data\r | |
1647 | //\r | |
1648 | if (IsaSerialFifoFull (Fifo)) {\r | |
1649 | return EFI_OUT_OF_RESOURCES;\r | |
1650 | }\r | |
1651 | \r | |
1652 | //\r | |
1653 | // FIFO is not full can add data\r | |
1654 | //\r | |
1655 | Fifo->Data[Fifo->Last] = Data;\r | |
1656 | Fifo->Surplus--;\r | |
1657 | Fifo->Last++;\r | |
1658 | if (Fifo->Last >= SERIAL_MAX_BUFFER_SIZE) {\r | |
1659 | Fifo->Last = 0;\r | |
1660 | }\r | |
1661 | \r | |
1662 | return EFI_SUCCESS;\r | |
1663 | }\r | |
1664 | \r | |
1665 | EFI_STATUS\r | |
1666 | IsaSerialFifoRemove (\r | |
1667 | IN SERIAL_DEV_FIFO *Fifo,\r | |
1668 | OUT UINT8 *Data\r | |
1669 | )\r | |
1670 | /*++\r | |
1671 | \r | |
1672 | Routine Description:\r | |
1673 | Remove data from specific FIFO\r | |
1674 | \r | |
1675 | Arguments:\r | |
1676 | Fifo SERIAL_DEV_FIFO *: A pointer to the Data Structure SERIAL_DEV_FIFO\r | |
1677 | Data UINT8*: the data removed from FIFO\r | |
1678 | \r | |
1679 | Returns:\r | |
1680 | EFI_SUCCESS: Remove data from specific FIFO successfully\r | |
1681 | EFI_OUT_RESOURCE: Failed to remove data because FIFO is empty\r | |
1682 | \r | |
1683 | --*/\r | |
1684 | // TODO: EFI_OUT_OF_RESOURCES - add return value to function comment\r | |
1685 | {\r | |
1686 | //\r | |
1687 | // if FIFO is empty, no data can remove\r | |
1688 | //\r | |
1689 | if (IsaSerialFifoEmpty (Fifo)) {\r | |
1690 | return EFI_OUT_OF_RESOURCES;\r | |
1691 | }\r | |
1692 | \r | |
1693 | //\r | |
1694 | // FIFO is not empty, can remove data\r | |
1695 | //\r | |
1696 | *Data = Fifo->Data[Fifo->First];\r | |
1697 | Fifo->Surplus++;\r | |
1698 | Fifo->First++;\r | |
1699 | if (Fifo->First >= SERIAL_MAX_BUFFER_SIZE) {\r | |
1700 | Fifo->First = 0;\r | |
1701 | }\r | |
1702 | \r | |
1703 | return EFI_SUCCESS;\r | |
1704 | }\r |