-/**@file\r
- PS2 Mouse Communication Interface \r
- \r
-Copyright (c) 2006 - 2007, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+/** @file\r
+ PS2 Mouse Communication Interface.\r
+\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "Ps2Mouse.h"\r
#include "CommPs2.h"\r
\r
-UINT8 SampleRateTbl[MAX_SR] = { 0xa, 0x14, 0x28, 0x3c, 0x50, 0x64, 0xc8 };\r
+UINT8 SampleRateTbl[MaxSampleRate] = { 0xa, 0x14, 0x28, 0x3c, 0x50, 0x64, 0xc8 };\r
+\r
+UINT8 ResolutionTbl[MaxResolution] = { 0, 1, 2, 3 };\r
\r
-UINT8 ResolutionTbl[MAX_CMR] = { 0, 1, 2, 3 };\r
+/**\r
+ Issue self test command via IsaIo interface.\r
\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @return EFI_SUCCESS Success to do keyboard self testing.\r
+ @return others Fail to do keyboard self testing.\r
+**/\r
EFI_STATUS\r
KbcSelfTest (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
UINT8 Data;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ Issue command to enable keyboard AUX functionality.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
KbcEnableAux (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
//\r
// Send 8042 enable mouse command\r
return Out8042Command (IsaIo, ENABLE_AUX);\r
}\r
\r
+/**\r
+ Issue command to disable keyboard AUX functionality.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
KbcDisableAux (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
//\r
// Send 8042 disable mouse command\r
return Out8042Command (IsaIo, DISABLE_AUX);\r
}\r
\r
+/**\r
+ Issue command to enable keyboard.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
KbcEnableKb (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
//\r
// Send 8042 enable keyboard command\r
return Out8042Command (IsaIo, ENABLE_KB);\r
}\r
\r
+/**\r
+ Issue command to disable keyboard.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
KbcDisableKb (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
//\r
// Send 8042 disable keyboard command\r
return Out8042Command (IsaIo, DISABLE_KB);\r
}\r
\r
+/**\r
+ Issue command to check keyboard status.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param KeyboardEnable return whether keyboard is enable.\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
CheckKbStatus (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
OUT BOOLEAN *KeyboardEnable\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- KeyboardEnable - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
UINT8 Data;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ Issue command to reset keyboard.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
PS2MouseReset (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
UINT8 Data;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ Issue command to set mouse's sample rate\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param SampleRate value of sample rate\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
PS2MouseSetSampleRate (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN MOUSE_SR SampleRate\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- SampleRate - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
\r
return Status;\r
}\r
\r
+/**\r
+ Issue command to set mouse's resolution.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Resolution value of resolution\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
PS2MouseSetResolution (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN MOUSE_RE Resolution\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Resolution - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
\r
return Status;\r
}\r
\r
+/**\r
+ Issue command to set mouse's scaling.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Scaling value of scaling\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
PS2MouseSetScaling (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN MOUSE_SF Scaling\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Scaling - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
UINT8 Command;\r
\r
- Command = (UINT8) (Scaling == SF1 ? SETSF1_CMD : SETSF2_CMD);\r
+ Command = (UINT8) (Scaling == Scaling1 ? SETSF1_CMD : SETSF2_CMD);\r
\r
//\r
// Send auxiliary command to set mouse scaling data\r
return Out8042AuxCommand (IsaIo, Command, FALSE);\r
}\r
\r
+/**\r
+ Issue command to enable Ps2 mouse.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @return Status of command issuing.\r
+**/\r
EFI_STATUS\r
PS2MouseEnable (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
//\r
// Send auxiliary command to enable mouse\r
return Out8042AuxCommand (IsaIo, ENABLE_CMD, FALSE);\r
}\r
\r
-EFI_STATUS\r
-PS2MouseGetPacket (\r
- PS2_MOUSE_DEV *MouseDev\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
+/**\r
Get mouse packet . Only care first 3 bytes\r
\r
-Arguments:\r
+ @param MouseDev Pointer of PS2 Mouse Private Data Structure\r
\r
- MouseDev - Pointer of PS2 Mouse Private Data Structure \r
+ @retval EFI_NOT_READY Mouse Device not ready to input data packet, or some error happened during getting the packet\r
+ @retval EFI_SUCCESS The data packet is gotten successfully.\r
\r
-Returns:\r
-\r
- EFI_NOT_READY - Mouse Device not ready to input data packet, or some error happened during getting the packet\r
- EFI_SUCCESS - The data packet is gotten successfully.\r
+**/\r
+EFI_STATUS\r
+PS2MouseGetPacket (\r
+ PS2_MOUSE_DEV *MouseDev\r
+ )\r
\r
---*/\r
{\r
EFI_STATUS Status;\r
BOOLEAN KeyboardEnable;\r
RelativeMovementX = Packet[1];\r
RelativeMovementY = Packet[2];\r
//\r
- // Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 \r
- // Byte 0 | Y overflow | X overflow | Y sign bit | X sign bit | Always 1 | Middle Btn | Right Btn | Left Btn \r
- // Byte 1 | 8 bit X Movement \r
- // Byte 2 | 8 bit Y Movement \r
- // \r
+ // Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0\r
+ // Byte 0 | Y overflow | X overflow | Y sign bit | X sign bit | Always 1 | Middle Btn | Right Btn | Left Btn\r
+ // Byte 1 | 8 bit X Movement\r
+ // Byte 2 | 8 bit Y Movement\r
+ //\r
// X sign bit + 8 bit X Movement : 9-bit signed twos complement integer that presents the relative displacement of the device in the X direction since the last data transmission.\r
// Y sign bit + 8 bit Y Movement : Same as X sign bit + 8 bit X Movement.\r
//\r
//\r
// First, Clear X and Y high 8 bits\r
//\r
- RelativeMovementX = (INT16) (RelativeMovementX & 0xFF); \r
- RelativeMovementY = (INT16) (RelativeMovementY & 0xFF); \r
+ RelativeMovementX = (INT16) (RelativeMovementX & 0xFF);\r
+ RelativeMovementY = (INT16) (RelativeMovementY & 0xFF);\r
//\r
// Second, if the 9-bit signed twos complement integer is negative, set the high 8 bit 0xff\r
//\r
RelativeMovementY = (INT16) (RelativeMovementY | 0xFF00);\r
}\r
\r
- \r
+\r
RButton = (UINT8) (Packet[0] & 0x2);\r
LButton = (UINT8) (Packet[0] & 0x1);\r
\r
}\r
}\r
\r
+/**\r
+ Read data via IsaIo protocol with given number.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Buffer Buffer receive data of mouse\r
+ @param BufSize The size of buffer\r
+ @param State Check input or read data\r
+\r
+ @return status of reading mouse data.\r
+**/\r
EFI_STATUS\r
PS2MouseRead (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN OUT UINTN *BufSize,\r
IN UINTN State\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Buffer - GC_TODO: add argument description\r
- BufSize - GC_TODO: add argument description\r
- State - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
UINTN BytesRead;\r
//\r
// 8042 I/O function\r
//\r
+/**\r
+ I/O work flow of outing 8042 command.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Command I/O command.\r
+\r
+ @retval EFI_SUCCESS Success to execute I/O work flow\r
+ @retval EFI_TIMEOUT Keyboard controller time out.\r
+**/\r
EFI_STATUS\r
Out8042Command (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN UINT8 Command\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Command - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
UINT8 Data;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ I/O work flow of outing 8042 data.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Data Data value\r
+\r
+ @retval EFI_SUCCESS Success to execute I/O work flow\r
+ @retval EFI_TIMEOUT Keyboard controller time out.\r
+**/\r
EFI_STATUS\r
Out8042Data (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN UINT8 Data\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Data - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
- UINT8 temp;\r
+ UINT8 Temp;\r
//\r
// Wait keyboard controller input buffer empty\r
//\r
return Status;\r
}\r
\r
- temp = Data;\r
- IsaIo->Io.Write (IsaIo, EfiIsaIoWidthUint8, KBC_DATA_PORT, 1, &temp);\r
+ Temp = Data;\r
+ IsaIo->Io.Write (IsaIo, EfiIsaIoWidthUint8, KBC_DATA_PORT, 1, &Temp);\r
\r
Status = WaitInputEmpty (IsaIo, TIMEOUT);\r
if (EFI_ERROR (Status)) {\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ I/O work flow of in 8042 data.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Data Data value\r
+\r
+ @retval EFI_SUCCESS Success to execute I/O work flow\r
+ @retval EFI_TIMEOUT Keyboard controller time out.\r
+**/\r
EFI_STATUS\r
In8042Data (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN OUT UINT8 *Data\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Data - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_TIMEOUT - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
UINTN Delay;\r
- UINT8 temp;\r
+ UINT8 Temp;\r
\r
Delay = TIMEOUT / 50;\r
\r
do {\r
- IsaIo->Io.Read (IsaIo, EfiIsaIoWidthUint8, KBC_CMD_STS_PORT, 1, &temp);\r
+ IsaIo->Io.Read (IsaIo, EfiIsaIoWidthUint8, KBC_CMD_STS_PORT, 1, &Temp);\r
\r
//\r
// Check keyboard controller status bit 0(output buffer status)\r
//\r
- if ((temp & KBC_OUTB) == KBC_OUTB) {\r
+ if ((Temp & KBC_OUTB) == KBC_OUTB) {\r
break;\r
}\r
\r
gBS->Stall (50);\r
Delay--;\r
- } while (Delay);\r
+ } while (Delay != 0);\r
\r
if (Delay == 0) {\r
return EFI_TIMEOUT;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ I/O work flow of outing 8042 Aux command.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Command Aux I/O command\r
+ @param Resend Whether need resend the Aux command.\r
+\r
+ @retval EFI_SUCCESS Success to execute I/O work flow\r
+ @retval EFI_TIMEOUT Keyboard controller time out.\r
+**/\r
EFI_STATUS\r
Out8042AuxCommand (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN UINT8 Command,\r
IN BOOLEAN Resend\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Command - GC_TODO: add argument description\r
- Resend - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
UINT8 Data;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ I/O work flow of outing 8042 Aux data.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Data Buffer holding return value\r
+\r
+ @retval EFI_SUCCESS Success to execute I/O work flow\r
+ @retval EFI_TIMEOUT Keyboard controller time out.\r
+**/\r
EFI_STATUS\r
Out8042AuxData (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN UINT8 Data\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Data - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
UINT8 Temp;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ I/O work flow of in 8042 Aux data.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Data Buffer holding return value.\r
+\r
+ @retval EFI_SUCCESS Success to execute I/O work flow\r
+ @retval EFI_TIMEOUT Keyboard controller time out.\r
+**/\r
EFI_STATUS\r
In8042AuxData (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN OUT UINT8 *Data\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Data - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_STATUS Status;\r
\r
return EFI_SUCCESS;\r
}\r
\r
+\r
+/**\r
+ Check keyboard controller status, if it is output buffer full and for auxiliary device.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+\r
+ @retval EFI_SUCCESS Keyboard controller is ready\r
+ @retval EFI_NOT_READY Keyboard controller is not ready\r
+**/\r
EFI_STATUS\r
CheckForInput (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_NOT_READY - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
UINT8 Data;\r
\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ I/O work flow to wait input buffer empty in given time.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Timeout Wating time.\r
+\r
+ @retval EFI_TIMEOUT if input is still not empty in given time.\r
+ @retval EFI_SUCCESS input is empty.\r
+**/\r
EFI_STATUS\r
WaitInputEmpty (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN UINTN Timeout\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Timeout - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_TIMEOUT - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
UINTN Delay;\r
UINT8 Data;\r
\r
gBS->Stall (50);\r
Delay--;\r
- } while (Delay);\r
+ } while (Delay != 0);\r
\r
if (Delay == 0) {\r
return EFI_TIMEOUT;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ I/O work flow to wait output buffer full in given time.\r
+\r
+ @param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL\r
+ @param Timeout given time\r
+\r
+ @retval EFI_TIMEOUT output is not full in given time\r
+ @retval EFI_SUCCESS output is full in given time.\r
+**/\r
EFI_STATUS\r
WaitOutputFull (\r
IN EFI_ISA_IO_PROTOCOL *IsaIo,\r
IN UINTN Timeout\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- IsaIo - GC_TODO: add argument description\r
- Timeout - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_TIMEOUT - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
UINTN Delay;\r
UINT8 Data;\r
\r
gBS->Stall (50);\r
Delay--;\r
- } while (Delay);\r
+ } while (Delay != 0);\r
\r
if (Delay == 0) {\r
return EFI_TIMEOUT;\r
projects / mirror_edk2.git / blobdiff